JP2012235264

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DESCRIPTION JP2012235264
The present invention provides a conference apparatus capable of effectively suppressing the
occurrence of echo and howling with a simple configuration. In a video conference apparatus 10,
a microphone 17a and a speaker 15a are provided in a housing such that an audio input
direction of the microphone 17a and an audio output direction of the speaker 15a are
substantially orthogonal to each other. In this case, the sound output from the speaker 15a is
difficult to input via the microphone 17a. Therefore, the occurrence of echo and howling can be
effectively suppressed by the simple configuration. [Selected figure] Figure 11
Conference equipment
[0001]
The present invention relates to a conferencing apparatus, and more particularly, to a
conferencing apparatus including communication means for transmitting and receiving at least
audio data via a communication network.
[0002]
2. Description of the Related Art Conventionally, a video conference by two-way communication
of image and voice is performed between a plurality of groups using a plurality of conference
devices having a camera, a microphone and a speaker.
[0003]
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In this video conference, the voice of one group is input through the microphone of the
conference device, and the input voice is transmitted to the conference device of the other group
through the Internet (communication network) and the speaker Output from
Also, the voice of the other group is input through the microphone of the conference device, and
the input voice is transmitted to the conference device of one group through the Internet and
output from the speaker (for example, Patent Documents 1 and 2).
[0004]
For this reason, there is a possibility that audio of one group output from the speakers of the
other conference apparatus may be input via the microphone of the other conference apparatus
and output from the speakers of the one group. The sound of the other group outputted from the
speaker may be inputted through the microphone of one conference apparatus and may be
outputted from the speaker of the other group.
In other words, echo and howling may occur.
[0005]
The present invention has been made under the above circumstances, and an object thereof is to
provide a conference apparatus capable of effectively suppressing the occurrence of echo and
howling with a simple configuration.
[0006]
According to a first aspect of the present invention, there is provided a conference apparatus
including communication means for transmitting and receiving at least audio data via a
communication network, wherein a housing in which the communication means is
accommodated and audio are transmitted by the communication means. And a speaker for
outputting the voice data received by the communication means as voice, the microphone and
the speaker are voice input direction of the microphone and voice output of the speaker It is a
conference apparatus provided in the said housing ¦ casing so that directions may mutually be
substantially orthogonal.
[0007]
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Further, according to a second aspect of the present invention, there is provided a conference
apparatus including communication means for transmitting and receiving at least audio data via
a communication network, the case comprising a substantially rectangular parallelepiped
member and containing the communication means. The device comprises a body, a microphone
for inputting voice as the voice data transmitted by the communication means, and a speaker for
outputting the voice data received by the communication means as voice, and two adjacent walls
of the casing The conference apparatus is provided with an audio intake port for capturing the
audio input through the microphone on one side, and an audio outlet for emitting the audio
output from the speaker on the other side.
[0008]
According to the present invention, it is possible to provide a conference apparatus capable of
effectively suppressing the occurrence of echo and howling with a simple configuration.
[0009]
FIGS. 1A and 1B are perspective views showing the appearance of the video conference
apparatus according to an embodiment of the present invention in a non-use state.
It is a disassembled perspective view of a video conference apparatus.
It is a top view of a video conference apparatus.
It is a side view (the 1) of a video conference apparatus.
It is a side view (the 2) of a video conference apparatus. It is a block diagram which shows the
structure of control of a video conference apparatus. It is a perspective view of the image input
device which a video conference apparatus has. FIG. 6 is a diagram (part 1) for explaining the
operation of the image input apparatus; FIG. 7 is a second diagram to explain an operation of the
image input apparatus; It is a front view of a video conference apparatus. It is a part of AA
sectional drawing of FIG. FIG. 12A is a perspective view of the voice input device included in the
teleconference device, and FIG. 12B is an exploded perspective view of the voice input device. It
is a figure for demonstrating the aspect of the video conference using a video conference
apparatus.
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[0010]
Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 (A) to 13.
FIGS. 1A and 1B show the appearance of the video conference apparatus as a conference
apparatus according to an embodiment in a non-use state. As shown in FIG. 1 (A) and FIG. 1 (B),
the television conference apparatus 10 has a thin substantially rectangular parallelepiped
(substantially flat) outer shape as a whole in a non-use state. In FIG. 1 (A) and FIG. 1 (B), the
teleconference device 10 is mounted in parallel to a horizontal surface on the upper surface
(mounting surface) of, for example, a desk, a table or the like. Hereinafter, the longitudinal
direction of the video conference apparatus will be described as the X axis direction, the direction
orthogonal to the X axis direction in the horizontal plane as the Y axis direction, and the direction
(vertical direction) orthogonal to the X axis and the Y axis direction as the Z axis direction.
[0011]
FIG. 2 is a perspective view showing the teleconference device 10 of FIG. 1 in an exploded state.
As shown in FIG. 2, the teleconference device 10 includes a housing 25, a control device 11, an
image input device 23 including an electronic camera 21, a cooling system 19, an audio output
device 15 including a speaker 15 a, and an audio including a microphone 17 a. An input device
17 and the like are provided.
[0012]
The housing 25 is formed of a thin box-shaped hollow member (a member having a substantially
rectangular parallelepiped shape). The housing 25 has a rectangular outer shape of, for example,
approximately A4 size in plan view, as shown in FIG. 3, and its thickness in side view, as shown in
FIGS. 4 and 5, for example. However, for example, it is about 20 mm to 45 mm. As a material of
the housing 25, for example, a hard resin such as plastic is used.
[0013]
As shown in FIG. 2, in the vicinity of the end on the -Y side of the upper wall of the housing 25,
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the + Z side of the rectangular in plan view extends substantially over the entire area in the X
axis direction and the X axis direction is the longitudinal direction. The recessed part 30 opened
to the and + X side is formed. A notch 34 is formed at the end on the + X side of the bottom
surface defining the recess 30.
[0014]
As shown in FIG. 2, the housing 25 is composed of an upper cover 27 and a lower cover 29
which are separably joined in the thickness direction (vertical direction in FIG. 2). The upper
cover 27 is formed in a thin box shape whose -Z side is open. The lower cover 29 is formed in a
thin box shape whose + Z side is open. The upper wall (upper wall of the housing 25) of the
upper cover 27 has an operation panel portion 36 on which the operation portion 38 is disposed
on the + Y side of the recess 30.
[0015]
As shown in FIG. 3, a plurality of (for example, four) operation buttons constituting a part of the
operation unit 38 are spaced in the Y-axis direction at the central portion of the operation panel
unit 36 in the X-axis direction. It is fitted in. These four operation buttons are, in order from the
recessed portion 30 side, a lock release button 33 described later, a power button 35 for turning
on / off the power to the teleconference device 10, and an internet circuit with the other party.
The line button 37, for example, a liquid crystal monitor, a personal computer (hereinafter
referred to as a PC), a liquid crystal television (all not shown) or the like on the screen or the
projector P (see FIG. 13) on the screen S (see FIG. 13) It is a decision button 39 for deciding an
item selected in the menu screen to be displayed. Near the outer periphery of the determination
button 39 in the operation panel portion 36, a cursor 40 for selecting an item in the menu screen
is fitted so as to surround the outer periphery of the determination button 39. As an item to be
selected and determined in the menu screen, for example, the destination of the teleconference
device of the other party who performs the teleconference, etc. may be mentioned.
[0016]
A pair of volume buttons 41a and 41b (one for increasing the volume and the other for
decreasing the volume on the + X side of the decision button 39 on the operation panel section
36). Buttons) are fitted adjacent to each other in the X-axis direction. A menu button 45 for
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calling up the menu screen on the screen of the liquid crystal monitor or on the screen S (see FIG.
13), for example, from the side of the decision button 39 on the −X side of the decision button
39 in the operation panel section 36 A microphone mute button 47 is fitted.
[0017]
Each of the operation buttons and the cursor disposed on the operation panel portion 36, when
operated (pressed), are engaged with the members located therebelow, whereby the desired
function is realized. ing. In particular, the operation buttons and the cursor except for the unlock
button 33 are disposed at positions corresponding to corresponding operation terminals 118
mounted on the sub board 13 described later. The upper surface of each of the buttons and the
cursor is substantially flush with the upper surface of the operation panel portion 36 in a nonpressed state.
[0018]
Here, as can be seen from FIGS. 4 and 5, the operation panel portion 36 is slightly (eg, 4.6 °)
with respect to the XY plane (the lower surface of the housing 25) so that the + Y side is lower
than the −Y side. It is inclined. Thereby, particularly when the user is located on the + Y side of
the housing 25 in general, the visibility and operability of the operation buttons and the cursor
are excellent.
[0019]
In addition, as shown in FIG. 1A, a recording medium M (see FIG. 6) mounted on the main board
12 described later is provided on the middle portion in the X-axis direction of the side wall on the
+ Y side of the housing 25. A USB terminal 49 for input / output to a device etc. and a USB
terminal 51 for connection to a PC are fitted.
[0020]
As shown in FIG. 1B, an image output terminal 55 mounted on the main board 12 to be described
later, a LAN terminal 57 for communication, and the like are fitted on the side wall on the −Y
side of the housing 25.
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Further, as shown in FIG. 4, a power jack 60 is fitted to the side wall on the + X side of the
housing 25.
[0021]
The control device 11 performs encoding processing or decoding processing of audio data and
image data, and controls bidirectional communication of audio and image via the Internet as a
communication network.
[0022]
As shown in FIG. 2, the control device 11 is housed in the housing 25 and includes a main board
12 as a control board, a sub board 13 as an audio processing and an operation board, and the
like.
[0023]
On the main board 12, as shown in FIG. 6, a central processing unit (CPU) 100, a read only
memory (ROM) 102, a random access memory (RAM) 104, a hard disk drive (HDD) 106 (or
storage or recording). Devices), data input / output I / F 108, network I / F (Interface) 110,
imaging element I / F 112, and image output I / F 114 via a bus line 116 such as an address bus,
data bus, etc. It is implemented with two-way communication enabled.
In addition, the image data mentioned above is data of a moving image or an intermittent image
(still image of a fixed time interval).
[0024]
The CPU 100 controls the overall operation of the teleconference device 10 based on a
predetermined program (program for the teleconference device).
The ROM 102 stores programs used to drive the CPU, such as IPL (Initial Program Loader). The
RAM 104 is used as a work area of the CPU.
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[0025]
The HDD 106 stores various data such as the above-mentioned program for the teleconference
device, image data, audio data and the like. Not limited to the HDD, for example, a solid state
drive (SSD) may be used. The program for the teleconferencing device may be a file in an
installable format or an executable format, and may be distributed by being recorded in a
computer readable recording medium of a recording medium such as the flash memory 107, for
example. Also, the program for the teleconference device may be stored not in the HDD 106 but
in the ROM 102. The HDD 106 controls reading or writing of various data to the HDD 106
according to the control of the CPU 100.
[0026]
The data input / output I / F 108 includes the USB terminals 49 and 51 described above, and
controls reading or writing (storage) of data with respect to the recording medium M such as a
flash memory connected to the USB terminal 49. Control transmission of the data displayed on
the display of the connected PC to the other party's video conference device. The recording
medium M is detachable from the USB terminal 49. The recording medium M is not limited to a
flash memory, and may be an EEPROM (Electrically Erasable and Programmable ROM), etc., as
long as the recording medium M is a non-volatile memory that reads or writes (stores) data
under control of the CPU 100 .
[0027]
The network I / F 110 includes the LAN terminal 57 (for example, an Ethernet (registered
trademark) terminal) described above, and performs input / output of data (image data and audio
data) via the Internet. The imaging element I / F 112 takes in an image signal output from the
electronic camera 21 as predetermined image data. The details of the image input device 23
including the electronic camera 21 will be described later.
[0028]
The image output I / F 114 includes the above-described image output terminal 55, and via a
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menu screen such as an operation icon for the destination of the teleconference device of the
other party who performs the teleconference, image quality adjustment, selection of output
signal, etc. Among the received data, encoded image data and data of an image input by the
electronic camera 21 are connected to the image output terminal 55, such as a liquid crystal
monitor (not shown), a projector P (see FIG. 13), etc. It is converted into a predetermined analog
or digital image signal acceptable for the display device and output. The CPU 100 decodes the
encoded image data using a predetermined codec. Examples of the predetermined image signal
include an analog RGB signal (VGA), a component video signal, a high-definition multimedia
interface (HDMI) signal, and a digital video interactive (DVI) signal.
[0029]
The sub board 13 is mounted with respective components such as a plurality of operation
terminals 118, an audio input / output I / F 120, an audio control unit 122, and the like
individually corresponding to the plurality of operation buttons described above. Each of the
plurality of operation terminals 118 and the voice control unit 122 are connected so as to allow
two-way communication with each other via the bus line 116, and are also connected so as to
allow two-way communication with the respective components mounted on the main board 12.
There is.
[0030]
The voice input / output I / F 120 takes in a voice signal input through the microphone 17 a as
predetermined voice data, transmits the voice data to the voice control unit 122, and transmits
the network I / F 110 and the voice control unit 122. The audio data received via the speaker
15a is converted into an audio signal reproducible by the speaker 15a. The details of the audio
input device 17 including the microphone 17a and the audio output device 15 including the
speaker 15a will be described later.
[0031]
The voice control unit 122 adjusts the volume of the sound output from the speaker 15a as the
pair of volume buttons 41a and 41b is operated, and the microphone mute button 47 is operated
(turned on / off). At the same time, the input / non-input of the sound by the microphone 17a is
switched.
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[0032]
Further, the audio control unit 122 receives a sound output from the speaker 15a via the
microphone 17a during two-way communication with the other party's teleconference device,
and forms a sound wave loop with the other party's teleconference device. As well as having an
echo cancellation function to suppress echo and howling that are generated, it also has a noise
reduction function to reduce the sound input via the microphone 17a such as the air
conditioning of the room and the operation sound of a fan 19c described later.
[0033]
The image input device 23 includes an arm 69, a uniaxial hinge 67, and the like in addition to the
electronic camera 21 as shown in FIG.
[0034]
The electronic camera 21 inputs an image of a subject via the photographing lens 21 a, converts
the input image into an electric signal, and outputs the electric signal to the imaging element I / F
112.
For example, a single focal wide-angle lens with a short focal length is used as the imaging lens
21a.
The electronic camera 21 is accommodated in a camera housing 63 formed of a hollow member
with the photographing lens 21a exposed.
The camera housing 63 is attached to a distal end (longitudinal one end) of the arm 69 via a
biaxial hinge device (not shown), and extends in parallel to the arm 69 in the longitudinal
direction of the arm 69. Relative independently of each other about a second axis which is
perpendicular to the first axis and the first axis. The arm 69 has its proximal end (the other end
in the longitudinal direction) connected to the housing 25 via the uniaxial hinge device 67
accommodated at the + X side end in the housing 25 via the notch 34. The housing 25 is
rotatable relative to the housing 25 about a third axis extending parallel to the Y axis (see FIGS. 8
and 9). Between the camera housing 63 and the arm 69, a cover member 71 which covers a part
of the biaxial hinge device is disposed.
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[0035]
Hereinafter, a unit including the camera housing 63 in which the electronic camera 21 is housed,
the arm 69, the cover member 71, and the biaxial hinge device is referred to as an image input
unit 24. The state of the image input unit 24 when the relative positions of the camera housing
63 and the arm 69 about the first and second axes are in the states shown in FIGS. 2 and 7 is
referred to as a reference state. That is, when the image input unit 24 is in the reference state,
the back surface (the upper surface in FIG. 2) is generally flat.
[0036]
The image input unit 24 has a third axis between the accommodation position accommodated in
the housing 25 through the recess 30 and the notch 34 by the action of the uniaxial hinge device
67 and the projection position projecting from the accommodation position. It can rotate around.
When the image input unit 24 is located at the storage position, at least a portion of the lower
surface thereof is placed on the bottom surface defining the recess 30, and the upper surface
(rear surface) thereof is on the -Y side of the upper surface of the operation panel portion 36.
Located approximately at the same height as the end. The rotational angle of the image input unit
24 about the third axis with respect to the housing 25 is mechanical within a range of, for
example, 0 ° or more and 135 ° or less, where 0 ° when the image input unit 24 is located at
the storage position. Is defined in Further, as shown in FIG. 3, when the image input unit 24 is
positioned at the storage position, the image input unit 24 is substantially fitted in the recess 30
in the X-axis and Y-axis directions.
[0037]
The image input unit 24 is biased by a resilient member (not shown) provided on the uniaxial
hinge device 67 from the storage position toward the projecting position. Further, when the
image input unit 24 is pivoted from the projecting position to the storage position, the image
input unit 24 mechanically locks the housing 25 at the storage position by the lock device (not
shown) including the lock release button 33 described above. Be done. When the lock release
button 33 is operated (pressed), the image input unit 24 located at the storage position is
released from the locking with the housing 25 by the lock device, and the storage position is
obtained by the action of the elastic member. And a predetermined angle (for example, 15 °)
toward the projecting position. That is, the uniaxial hinge device 67 has a function (pop-up
function) to cause the image input unit 24 to pop up from within the housing 25 by the action of
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the elastic member.
[0038]
In addition, the image input unit 24 operates at any position within a predetermined range
around the first axis with respect to the housing 25 (for example, the rotation described above)
by the action of a holding torque generator (not shown) provided to the single-axis hinge device
67. It can be held at a position where the angle is 45 ° or more and 135 ° or less. Further, in
the image input unit 24, the camera housing 63 has a predetermined range around each of the
second and third axes with respect to the arm 69 by the action of the holding torque generator
(not shown) provided in the above-mentioned two-axis hinge device. It can be held at any
position within.
[0039]
The cooling system 19 cools the heat generating body by discharging the heat generated by the
heat generating body such as the CPU 100 mounted on the main board 12 of the control device
11 to the outside of the housing 25 by the following configuration.
[0040]
The cooling system 19 includes, as shown in FIG. 2, a heat pipe 19a, a heat sink 19b, a horizontal
fan 19c, and the like provided in the housing 25, respectively.
[0041]
Here, as shown in FIG. 5, in the middle portion in the Y-axis direction of the side wall on the −X
side of the housing 25, it comprises a plurality of slit-like through holes extending in the Z-axis
direction and aligned in the Y-axis direction. An exhaust port 53 is formed.
Further, as shown in FIG. 2, in the vicinity of the end portion on the −X side of the lower wall
(lower wall of the lower cover 29) of the housing 25, an air inlet 59 composed of a plurality of
through holes is formed .
[0042]
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One end of the heat pipe 19a is connected to, for example, the CPU 100, the middle portion of
the heat pipe 19a extends parallel to the XY plane, and the other end is connected to the heat
sink 19b.
The heat sink 19 b is, for example, a heat dissipating member including a plurality of metal fins
arranged at predetermined intervals in the Y-axis direction, and is disposed at a position adjacent
to the exhaust port 53 in the housing 25. Therefore, for example, the heat generated in the CPU
100 and the like is sequentially transmitted to the heat pipe 19 a and the heat sink 19 b and is
released to the outside of the housing 25 through the exhaust port 53.
[0043]
The fan 19c has a rectifying function and is directly on the intake port 59 in the housing 25 and
near the + X side of the heat sink 19b so that the intake direction is substantially + Z and the
exhaust direction is generally It is arranged to be in the -X direction.
[0044]
Therefore, the air sucked by the fan 19 c via the air inlet 59 is discharged (excluded) from the air
outlet 53 to the outside of the housing 25 via the heat sink 19 b.
This further enhances the heat dissipation (diffusion) effect from the heat sink 19b.
[0045]
The audio output device 15 includes, in addition to the speaker 15a, a speaker box 15b made of,
for example, a box-shaped hollow member, as shown in FIG.
[0046]
As the speaker 15a, for example, a full range type round speaker is adopted.
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The speaker 15a is connected to the voice input / output I / F 120 (see FIG. 6), converts the voice
signal transmitted from the voice input / output I / F 120 into voice, and outputs the voice.
[0047]
FIG. 10 is a front view (view from the + Y direction) of the teleconference device 10 (note that the
operation unit 38 and the like are omitted in FIG. 10). And in FIG. 11, a part of AA sectional view
taken on the line of FIG. 10 is shown. As shown in FIG. 11, the top plate of the speaker box 15b
has the speaker 15a so that the axis thereof is orthogonal to the operation panel portion 36, that
is, the voice output direction is substantially upward (including obliquely upward). It is fitted in
the department.
[0048]
Here, as shown in FIG. 3 and FIG. 10, at the corner portions on the + X side and + Y side of the
operation panel portion 36, a sound comprising a plurality of through holes 43a for emitting the
sound emitted from the speaker 15a to the outside The discharge port 43 is formed. Here, the
plurality of through holes 43a that constitute the sound emission port 43 are formed in a dense
state in a virtual frame of a regular hexagonal shape in plan view, as can be seen from FIG. 3. It
may be formed in a dense state in a virtual frame such as a viewing polygon (except for regular
hexagons), a circle in plan view, and an ellipse in plan view. The size and the number of the
through holes, and the density in the virtual frame of the voice intake port 43 are appropriately
set in accordance with the performance of the voice output device 15 including the speaker 15a.
[0049]
As shown in FIG. 2, the speaker box 15 b is located on the + X side in the housing 25 so that the
speaker 15 a is positioned directly below the sound emission port 43 at a position below the
operation panel section 36. More specifically, the axis line of the speaker 15a is disposed so as to
pass through the center of the sound emission port 43 (the center of the virtual frame of the
regular hexagonal shape in plan view) (see FIG. 3). As shown in FIG. 11, the plurality of through
holes 43a constituting the sound emission port 43 extend in the direction orthogonal to the
operation panel portion 36, that is, in the direction parallel to the axis of the speaker 15a.
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[0050]
Therefore, the sound output from the speaker 15a does not have vignetting in the through hole
43a, and is smoothly (outly) released to the outside of the housing 25 through the sound
emission port 43.
[0051]
The speaker box 15 b is fixed to the housing 25 via a buffer member 88 made of an elastic
member such as silicone rubber or urethane rubber.
As a result, the sound emitted from the speaker 15 a is prevented from being transmitted to the
housing 25, so generation of chattering noise in the housing 25 is suppressed, and the sound
emitted from the speaker 15 a is transmitted through the housing 25 to the microphone Input by
17a is suppressed.
[0052]
The voice input device 17 includes, in addition to the microphone 17a, a holding member 18 for
holding the microphone 17a in the housing 25 as shown in FIG. 12A.
[0053]
For example, a small omnidirectional microphone is employed as the microphone 17a.
The microphone 17 a is connected to the voice input / output I / F 120 (see FIG. 6), converts the
input voice into a voice signal, and transmits the voice signal to the voice input / output I / F
120.
[0054]
The microphone 17a is made of, for example, a thin (low height) cylindrical member as shown in
FIG. 12 (B), and its axis is substantially Y-axis, as can be seen in FIG. 3 and FIG. Are disposed
diagonally lower on the + Y side of the speaker 15a in the housing 25 so that the voice input
direction is substantially in the -Y direction.
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[0055]
As shown in FIG. 11, the holding member 18 has a bottomed cylindrical portion 18 a that opens
in the + Y side with the Y axis direction as the axial direction, and the vicinity of the end (opening
end) of the cylindrical portion 18 a on the + Y side And a flange portion 18b projecting radially
outward of the cylindrical portion 18a.
Here, as a material of the holding member 18, for example, a hard resin such as plastic is used,
but it is not particularly limited thereto.
[0056]
The microphone 17a is cylindrical except that the central portion of the + Y side surface and a
part of the −Y side surface have the Y axis direction of soft resin such as rubber, urethane, etc.
as an axial direction. It is closely held in a covered state by the holder 17b (see FIGS. 12A and
12B) made of a member.
[0057]
The −Y side portion of the holder 17 b is fitted on the inner peripheral side of the cylindrical
portion 18 a of the holding member 18, and the + Y side portion is + Y more than the end (open
end) of the holding member 18 on the + Y side. Protruding to the side.
A through hole 89 for passing a wire connecting the microphone 17a and the voice input /
output I / F 120 is formed on the side wall on the -Y side of the holder 17b.
[0058]
The flange portion 18b is fixed to the housing 25 via a cushioning member 17d made of a
material such as sponge, rubber, urethane or the like so that the + Y side portion of the holder
17b is in pressure contact with the side wall of the + Y side of the housing 25 There is.
[0059]
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A ring-shaped buffer member 17c (see FIGS. 12A and 12B) in which the + Y side portion of the
holder 17b is inserted on the inner peripheral side of the end (open end) of the cylindrical
portion 18a on the + Y side The side wall of the housing 25 on the + Y side is in pressure contact
with the other.
The buffer member 17c is made of, for example, a material such as a sponge, rubber, or
urethane.
[0060]
From the above, while the entire microphone 17a is covered by the holding member 18 and the
holder 17b except for the central portion of the + Y side surface (see 12 (A)), the periphery of the
central portion of the + Y side surface is The + Y side portion of the covering holder 17b is in
pressure contact with the inner wall surface of the side wall on the + Y side of the housing 25
(see FIG. 11). Thus, the space in the housing 25 in which the microphone 17 a is located and the
space in the housing 25 in which the audio output device 15 and the cooling system 19 are
located are physically shut off.
[0061]
Here, as shown in FIG. 10, in a portion corresponding to the central portion (a portion not
covered by the holder 17b) of the + Y side surface of the microphone 17a on the + Y side wall of
the housing 25, as shown in FIG. The voice intake port 20 is formed of a plurality of (for example,
three) through holes 20a formed at predetermined intervals (equal intervals). That is, as can be
seen from FIG. 11, the space in the housing 25 in which the microphone 17 a is located is in
communication with the outside of the housing 25 via the sound inlet 20. The three through
holes 20a extend parallel to the axis of the microphone 17a (parallel to the Y axis). The axis line
of the microphone 17a passes, for example, the center of the central through hole 20a of the
three through holes 20a, that is, the center of the sound intake port 20. The sound intake may be
configured by at least one through hole, and it is preferable that the axial line of the microphone
17 a passes through the center of the sound intake 20 regardless of the number of the through
holes. Here, the center of the voice intake port 20 refers to the center through hole (in the case
of one, in the case where the voice intake port is constituted by an odd number of through holes
arranged at equal intervals in the X axis direction). The center two through holes (in the case of
two), which are the centers of the one through hole) and the voice intake port is constituted by
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an even number of through holes aligned in the X-axis direction, for example, It is a middle point
of a line segment connecting the centers of the two through holes).
[0062]
Therefore, the sound generated outside the housing 25 (in particular, the voice of a person
located approximately on the + Y side of the teleconference device 10) is smoothly input via the
voice intake port 20.
[0063]
Here, as shown in FIG. 11, the height position of the microphone 17a with respect to the housing
25 is set such that the height H of the axis line from the lower surface of the housing 25 is 20
mm or less (for example, 16 mm). It is done.
As a result, the direct sound (voice input directly from the speaker) input via the microphone 17a
and the reflected sound (voice generated by the speaker) input via the microphone 17a It is
prevented that the sound reflected and input on the placed mounting surface is input via the
microphone 17a with a phase difference of a half wavelength and canceled each other.
[0064]
Here, noise within a predetermined frequency band such as, for example, the normal operation
noise of the fan 19 c and the normal sound leaking from the audio output device 15 into the
housing 25 directly or through the housing 25. Even when input through the microphone 17a,
the noise is reduced by the above-described noise reduction function of the voice control unit
122, so that it is prevented from being transmitted to the other party's teleconference device via
the Internet.
[0065]
However, temporarily, for example, abnormal operation noise generated occasionally by the fan
19 c, noise outside the above-mentioned frequency band such as abnormal sound leaking from
the audio output device 15 into the housing 25 (for example, extremely high sound, extremely
low sound, etc.) Is input to the microphone 17 a directly or through the housing 25, the noise
can not be reduced by the voice control unit 122 and is transmitted to the video conference
device of the other party, and the speaker of the video conference device It will be output.
03-05-2019
18
[0066]
Therefore, in the present embodiment, as described above, the space in which the microphone
17a is located in the housing 25 and the sound output device in the housing 25 by the holding
member 18, the holder 17b, and the side wall on the + Y side of the housing 25. It physically cuts
off from the space where the cooling system 19 and the like are located, and prevents noise
directly within the above frequency band and outside the above frequency band from being input
by the microphone 17a.
[0067]
Further, as described above, the holding member 18 is held by the housing 25 via the buffer
members 17c and 17d, and noise within the above-mentioned frequency band and outside the
above-mentioned frequency band is transmitted by the microphone 17a via the housing 25. It is
supposed to be prevented from being input.
[0068]
In addition, as described above, the microphone 17a is held between the housing 25 and the
holding member 18 via the holder 17b to prevent rattling of the housing 25 and the holding
member 18, and the above-mentioned frequency band Noise inside and outside the frequency
band is prevented from being input by the microphone 17 a through at least one of the housing
25 and the holding member 18.
[0069]
Here, a sound with a magnitude less than a predetermined value output from the speaker 15a to
the outside of the housing 25, a sound within a predetermined frequency band (for example, a
voice when talking normally), etc. are input via the microphone 17a. Even in this case, the echo
cancellation function of the voice control unit 122 described above can suppress the occurrence
of echo and howling.
[0070]
However, temporarily, a sound having a magnitude equal to or greater than the predetermined
value output from the speaker 15a to the outside of the housing 25 (for example, including
sudden sounds such as loud voice, coughing, sneezing, shock noise, etc.) When a sound such as a
sound (for example, an extremely high sound or an extremely low sound) is input through the
microphone 17a, the sound control unit 122 may not be able to suppress the occurrence of echo
and howling.
03-05-2019
19
[0071]
Therefore, in order to effectively (fully) suppress the occurrence of echo and howling, it is
desirable that the sound output from the speaker 15a is not input as much as possible through
the microphone 17a.
On the other hand, due to the nature of the video conference, the voice of the video conference
participant (conference participant) can be easily input via the microphone 17a, and the video
conference participant can easily hear the audio output from the speaker 15a. Naturally it is
desirable.
[0072]
In the present embodiment, as described above, the upper wall (the operation panel portion 36)
of the housing 25 is provided with the sound emission port 43 for emitting the sound output
from the speaker 15a. An audio intake port 20 for capturing audio input via the microphone 17a
is formed on the side wall substantially orthogonal (adjacent) + Y side.
[0073]
In this case, the sound output from the speaker 15 a and the sound emitted from the sound
emission port 43 is difficult to be input from the sound intake port 20 via the microphone 17 a.
This effectively suppresses echo and howling.
[0074]
Then, in the present embodiment, the speaker 15a and the microphone 17a are arranged on the
housing 25 so that projection images of respective axis lines on a predetermined plane (YZ
plane) are substantially orthogonal to each other.
Orthogonally orthogonal
means that the angle θ (see FIG. 11) formed by these projection
03-05-2019
20
images is within a range of, for example, 80 ° or more and 100 ° or less.
[0075]
In other words, in the present embodiment, the speaker 15a and the microphone 17a are
provided in the housing 25 so that the sound output direction of the speaker 15a and the sound
input direction of the microphone 17a are substantially orthogonal to each other.
[0076]
Specifically, the speaker 15a is disposed with respect to the housing 25 so that the voice output
direction is substantially upward (including obliquely upward), and the microphone 17a is
generally in the -Y direction. It arranges with respect to the housing ¦ casing 25 like FIG.
[0077]
In this case, since the sound output from the speaker 15a is hard to be input through the
microphone 17a, echo and howling are effectively suppressed.
[0078]
Furthermore, in the present embodiment, as the microphone 17a is disposed obliquely below the
speaker 15a, the microphone 17a is made to deviate from the sound output direction of the
speaker 15a.
[0079]
As described above, since the voice output direction of the speaker 15a is substantially upward
(including obliquely upward), it becomes easy for a person located at an arbitrary position
around the video conference apparatus 10 to hear the voice outputted from the speaker 15a.
Further, as described above, since the voice input direction of the microphone 17a is generally in
the -Y direction, the voice of a person located approximately on the + Y side of the teleconference
device 10 is very easily input via the microphone 17a.
[0080]
Therefore, if the conference participant is positioned approximately on the + Y side of the video
03-05-2019
21
conference apparatus 10, the voice of the conference participant becomes very easy to be input
through the microphone 17a, and the voice output from the speaker 15a is conferenced. It will
be easier for participants to hear.
[0081]
Here, in the present embodiment, as can be seen from FIG. 11, the speaker 15 a is slightly
inclined (for example, 4.6 °) with respect to the XY plane so that the + Y side is lower than the
−Y side.
In other words, the angle θ formed by the projected image of the axes of the speaker 15a and
the microphone 17a on a predetermined plane (YZ plane), that is, a plane parallel to the XY plane
including the axis of the microphone 17a and the YZ plane including the axis of the speaker 15a
The angle θ with the plane orthogonal to is set, for example, to 85.4 °.
The inclination angle of the speaker 15a and the inclination angle of the operation panel portion
36 are the same (4.6 °).
[0082]
Therefore, assuming that the conference participant is located approximately on the + Y side of
the video conference apparatus 10, the voice input direction of the microphone 17a and the
voice output direction of the speaker 15a are generally directed to the conference participant
side. The voices of the participants are very easily input via the microphone 17a, and the voices
outputted from the speaker 15a are very easy to be heard by the conference participants.
[0083]
That is, the video conference apparatus 10 is designed in consideration of effectively suppressing
echo and howling while fully exerting the functions of both the microphone 17 a and the speaker
15 a.
[0084]
Further, in the present embodiment, as described above, the intake port 59 is located in the
03-05-2019
22
vicinity of the end on the -X side of the lower wall of the housing 25, that is, on the -X side, -Y
side and -Z side of the microphone 17a. While being formed, the inflow direction of the air via
the intake port 59 by the fan 19c is the + Z direction.
That is, the inflow path of air into the housing 25 is out of the voice input direction of the
microphone 17a.
Further, the exhaust port 53 is formed at a Y-axis direction intermediate portion of the side wall
on the -X side of the housing 25, that is, at a position on the -X side and -Y side of the
microphone 17a. The outflow direction of the air passing through is -X direction.
That is, the outflow path of the air to the outside of the housing 25 is out of the voice input
direction of the microphone 17a.
[0085]
Therefore, intake noise (including wind noise and the like at the intake port 59) and exhaust
noise (including wind noise and the like at the exhaust port 53) of the fan 19c are difficult to be
input through the microphone 17a, whereby the intake of the fan 19c is performed. It is
effectively suppressed that the sound and the exhaust sound are transmitted as noise to the other
party's teleconference device.
[0086]
An example of a video conference using the video conference apparatus 10 configured as
described above will be described below.
Here, it is assumed that each group performs a video conference using one video conference
apparatus 10 among a plurality of groups each composed of a plurality of members.
Therefore, the following description is valid for all groups.
[0087]
03-05-2019
23
For example, as shown in FIG. 13, a plurality of members (for example, seven members) of one
group are, for example, + X side and −X side of a rectangular table T having a rectangular shape
in a plan view and having a Y axis direction as a longitudinal direction. It seats in the state which
turned to the table T side to + and Y side respectively.
[0088]
At the center of the table T, a projector P is mounted so as to project an image on a screen S
disposed obliquely upward on the −Y side and + Z side of the table T.
[0089]
The television conference apparatus 10 is located, for example, on the corner on the + X side and
the −Y side of the table T (at a position outside the horizontal angle of view α of the projector P,
with the image input unit 24 at the storage position So that the operator panel 36 side is on the +
Y side and the image input unit 24 side is on the −Y side at a position where the person sitting
in the opposite position does not get in the way to see the image projected on the screen S). In a
state where the direction is set.
[0090]
As a result, in the video conference apparatus 10, the voice inlet 20 faces in the + Y direction and
the voice outlet 43 faces obliquely upward on the + Z side and + Y side, so the voices of all
members of one group pass through the microphone 17a. This makes it easy for all members of
one group to listen to the sound output from the speaker 15a.
[0091]
In addition to the above installation of the teleconference device 10, connection of wiring relating
to electricity and communication to the teleconference device 10 (for example, connection
between the power jack 60 and the power supply, terminals connected to the LAN terminals 51
and 57, and the Internet) Connection of the image output terminal 55 and the terminal of the
projector P) is performed.
[0092]
Next, the user (member of one group) depresses the lock release button 33 (see FIG. 9) to release
the lock of the image input unit 24 to the housing 25.
03-05-2019
24
At this time, due to the pop-up function of the uniaxial hinge device 67, the image input unit 24
rotates about the third axis with respect to the housing 25 and protrudes a predetermined
amount from the inside of the housing 25 (see FIG. 8).
[0093]
Therefore, the user grasps the image input unit 24 and manually rotates it about the third axis
until the total rotation angle becomes, for example, 90 ° (see FIG. 9), and the camera housing 63
is By appropriate manual rotation around each of the two axes, the electronic camera 21 is
positioned, for example, at a position where all the members of one group are within the field of
view.
[0094]
Next, the user presses the power button 35 (see FIG. 10) to activate one teleconference device
10.
At this time, the fan 19c of the cooling system 19 (see FIG. 2) is activated, and the air flows into
the housing 25 through the air inlet 59, and the housing 25 through the heat sink 19b and the
exhaust port 53. Spill out.
[0095]
In addition, when the video conference apparatus 10 is activated, one video conference
apparatus 10 is connected to a predetermined server (not shown) on the Internet, and from the
server, the video conference of the other video conference apparatus 10 is one video conference
It is transmitted to the device 10, and the destination list is projected on the screen S by the
projector P connected to the one teleconference device 10.
Then, the user operates the cursor 40 to select the destination of another group that wants to
make a video conference from the destination list displayed on the screen S, and presses the
determination button 39 to make a decision.
03-05-2019
25
In this case, when the other group selected and determined performs an operation for consenting
to perform the video conference in the other video conference apparatus 10 connected to the
server, one or the other The internet connection is connected between the teleconference devices
10.
[0096]
In this manner, when the Internet circuit is connected between the one and the other video
conference apparatuses 10, the form (image) of all members of one group inputted by the
electronic camera 21 of the one video conference apparatus 10 is the Internet The video is
transmitted to another video conference apparatus 10 of another group of the communication
party via the line, and is projected on the screen S by the projector P connected to the other
video conference apparatus 10.
Further, the appearances (images) of all the members of the other group inputted by the
electronic camera 21 of the other video conference apparatus 10 are transmitted to the one
video conference apparatus 10 via the Internet circuit, and the one video conference apparatus It
is projected on the screen S by the projector P connected to 10.
[0097]
Also, the voice of one group is input through the microphone 17a of the one video conference
device 10, and the input voice is transmitted to the other video conference device 10 through the
Internet line and output from the speaker 15a. Be done.
On the other hand, the voices of the other group are input through the microphones 17a of the
other video conference devices 10, and the input voices are transmitted to the one video
conference device 10 through the Internet circuit and output from the speakers 15a. Be done.
[0098]
At this time, as described above, the sound of the other group output from the speaker 15 a of
the one video conference device 10 is difficult to be input via the microphone 17 a of the one
03-05-2019
26
video conference device 10.
Therefore, the sound of the other group is output from the speaker 15a of the other
teleconference device 10, that is, the echo is suppressed, and the feedback caused by the
repetition of the echo is suppressed.
[0099]
Also, the sound of one group output from the speaker 15 a of another video conference device
10 is difficult to be input via the microphone 17 a of the other video conference device 10.
Therefore, the sound of one group is output from the speaker 15a of the teleconference device
10, that is, the echo is suppressed, and the feedback caused by the repeated echo is suppressed.
[0100]
Further, as described above, it is difficult for the intake sound and the exhaust sound of the fan
19 c of one teleconference device 10 to be inputted through the microphone 17 a and prevented
from being transmitted as noise to the other teleconference device 10. .
Further, as described above, it is difficult for the operation sound of the fan 19 c of one
teleconference device 10, the sound leaking from the audio output device 15 into the housing
25, etc. to be input through the microphone 17 a, and another teleconference device 10. Is
prevented from being transmitted as noise.
[0101]
As described above, echo and howling can be effectively suppressed in each of the one and the
other video conference apparatuses 10.
Further, the noise is prevented from being input through the microphone 17 a in each of the one
03-05-2019
27
and the other video conference apparatuses 10.
Therefore, a video conference can be performed in a state in which high-quality two-way voice
communication is realized between one group and the other group.
[0102]
As described above, a video conference by two-way communication of image and sound is
performed.
[0103]
In addition, the user operates the volume buttons 41a and 41b appropriately to adjust the
volume of the sound emitted from the speaker 15a before the video conference starts and during
the video conference, and the microphone mute button 47 Press to prevent one group's audio
from being output to the other group.
Also, the user appropriately executes the desired function by pressing the menu button 45,
calling up the menu screen on the screen, and selecting / determining an item on the menu
screen by operating the cursor 40 and the decision button 39. .
[0104]
Further, when the user wants to change the other group of the communication party, the user
presses the line button 37 to disconnect the Internet connection with the other video conference
apparatus 10 currently connected. At this time, a menu screen is displayed on the screen S, and
the destination list is displayed on the menu screen. Then, the user operates the cursor 40 and
the decision button 39 of one of the video conference devices 10 in the same manner as
described above, and selects and decides another video conference device 10 which wants to
conduct a video conference next. Then, when the operation to accept the two-way
communication is performed in the other teleconference device 10 selected and determined in
the same manner as described above, the video and audio between the one teleconference device
10 and the other teleconference device 10 Two-way communication is started. Thereafter, a
video conference is conducted as described above.
03-05-2019
28
[0105]
After the video conference ends, the user presses the power button 35 to stop the power supply
to the video conference apparatus 10. As described above, when the power button 35 is pressed,
the video conference apparatus 10 can be shut down to terminate communication with the
communication partner. Then, the user appropriately rotates the camera housing 63 about the
first and second axes with respect to the arm 69 to return the image input unit 24 to the
reference state, and the image input unit 24 in the reference state to the third position. And
housed in the housing 25. When the image input unit 24 is housed in the housing 25, the image
input unit 24 is locked to the housing 25 by the action of the locking device. In a state in which
the image input unit 24 is accommodated in the housing 25, the teleconference device 10 has a
flat plate shape of A4 size in plan view.
[0106]
Note that the method of using the video conference apparatus 10 described above is the same as
in the case where, for example, a liquid crystal monitor, a PC, a liquid crystal television or the like
is connected to the video conference apparatus 10 instead of the projector P as an image output
device.
[0107]
As described above, according to the teleconference device 10 of the present embodiment, the
housing 15 has the speaker 15a and the microphone 17a in such a manner that projection
images of their respective axis lines on a predetermined plane (YZ plane) are substantially
orthogonal to each other. With the simple configuration of merely arranging them, the
occurrence of echo and howling can be effectively suppressed.
[0108]
In other words, according to the teleconference device 10, the speaker 15a and the microphone
17a can be simply provided in the housing 25 so that the audio output direction of the speaker
15a and the audio input direction of the microphone 17a are substantially orthogonal to each
other. The occurrence of echo and howling can be effectively suppressed.
[0109]
Further, according to the video conference apparatus 10, the upper wall (the operation panel
portion 36) of the housing 25 is provided with the sound emission port 43 for emitting the
03-05-2019
29
sound output from the speaker 15a, With a simple configuration in which the voice intake port
20 for capturing voice input via the microphone 17a is formed on the side walls on the + Y side
adjacent to each other, generation of echo and howling can be effectively suppressed.
[0110]
Further, in the video conference apparatus 10, since the speaker 15a is disposed relative to the
housing 25 so that the voice output direction is substantially upward (including obliquely
upward), any position around the video conference apparatus 10 A person located at can easily
hear the sound output from the speaker 15a.
[0111]
Further, in the video conference apparatus 10, the speaker 15a is arranged to be slightly inclined
so that the + Y side is lower than the -Y side, and the microphone 17a is arranged such that the
voice input direction is substantially the -Y direction. It is supposed to be.
Therefore, by setting the conference participant to be approximately on the + Y side of the video
conference apparatus 10, the voice of the conference participant can be very easily input via the
microphone 17a, and the conference participant can be output from the speaker 15a. Audio is
very easy to hear.
[0112]
Moreover, in the video conference apparatus 10, the speaker 15a and the microphone 17a are
disposed relatively close to each other in the substantially flat small and thin casing 25. Even in
such a case, the speaker is By arranging the microphone 15a and the microphone 17a as in the
present embodiment, the occurrence of echo and howling can be effectively suppressed.
[0113]
Further, the sound emission port 43 is located at the corner on the + X side and + Y side of the
upper wall (the operation panel portion 36) of the housing 25, that is, a pair of volume buttons
41a and 41b, an enter button 39, a menu button 45 and a microphone mute Since the buttons
47 are formed on the extension of the line in which the buttons 47 are arranged (see FIG. 3), the
appearance (design) is excellent in uniformity.
03-05-2019
30
[0114]
The present invention is not particularly limited to those described in the above embodiments,
and various modifications are possible.
[0115]
In the above embodiment, although the angle θ is 85.4 °, the present invention is not limited to
this, and as described above, the angle θ may be 80 ° or more and 100 ° or less (audio output
direction of the speaker 15a and The voice input directions of the microphone 17a may be
substantially orthogonal to each other).
If the angle θ is within this range (80 ° or more and 100 ° or less), a person located at an
arbitrary position around the teleconference device 10 can relatively easily hear the sound
output from the speaker 15a. While being able to be done, it is difficult for the sound outputted
from the speaker 15a to be inputted through the microphone 17a.
That is, regardless of the positional relationship between the video conference apparatus 10 and
a person, echo and howling can be effectively suppressed while the function of the speaker 15a
is substantially fully exhibited.
Then, as described above, as the conference participant is positioned approximately on the + Y
side of the video conference apparatus 10, echo and howling are effectively suppressed while
fully exerting the functions of both the microphone 17a and the speaker 15a. From the
viewpoint, it is preferable that the θ be 80 ° or more and 90 ° or less (the speaker 15a is
inclined so that the + Y side is lower than the −Y side).
In addition, the inclination angle of the operation panel portion 36 with respect to the XY plane
may be, for example, 90 ° -θ, that is, the penetrating direction of the plurality of through holes
43a constituting the sound emission port 43 may be parallel to the axis of the speaker 15a.
preferable.
[0116]
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31
In the above embodiment, the voice intake port 20 is formed on the side wall on the + Y side of
the housing 25. However, the present invention is not limited to this. For example, the voice
intake port is the other wall of the housing 25 (side wall on the + Y side It may be formed on a
wall other than the above.
In this case, it is preferable to form the sound outlet on a wall adjacent to the wall on which the
sound inlet is formed.
As a result, while the projected images of the respective axis lines of the microphone and the
speaker on a predetermined plane (for example, the XY plane, YZ plane, XZ plane, etc.) are
orthogonal to each other, and the microphone is out of the sound output direction of the speaker,
The speaker can be placed close to the inlet and close to the sound outlet.
In this case, if the voice inlet is formed in the upper wall of the housing, that is, the voice input
direction of the microphone 17a is substantially downward (including obliquely downward), any
position around the video conference apparatus 10 The voice of the person located at the is
easily input through the microphone 17a. In addition, if an audio outlet is formed on the upper
wall of the housing, that is, the audio output direction of the speaker 15a is substantially upward
(including obliquely upward), the audio outlet is located at any position around the video
conference apparatus Performer can easily hear the sound output from the speaker 15a.
[0117]
In the above embodiment, the sound emission port 43 is formed in the upper wall of the housing
25. However, the present invention is not limited to this. For example, the sound emission port is
formed in the other wall of the housing It is good as well. In this case, it is preferable to form the
voice inlet on a wall adjacent to the wall where the voice outlet is formed. Thereby, while the
projection images to the predetermined plane (for example, XY plane, YZ plane, XZ plane, etc.) of
the direction of an axis of each of a microphone and a speaker are mutually orthogonal, a state
where a microphone deviated from a voice output direction of a speaker The speaker can be
placed close to the sound inlet and close to the sound outlet. In this case, if the voice inlet is
formed in the upper wall of the housing, that is, the voice input direction of the microphone 17a
is substantially downward (including obliquely downward), any position around the video
conference apparatus 10 The voice of the person located at the is easily input through the
microphone 17a.
03-05-2019
32
[0118]
In the above embodiment, the sound emission port 43 is formed at the corner on the + X side and
+ Y side of the upper wall (operation panel portion 36) of the housing 25. However, the sound
emission port is not limited to this. It may be formed in another part of the part 36 (the part
where each operation button and the cursor 40 are not arranged). In this case, it is necessary to
arrange the speaker 15a at a position corresponding to the sound outlet.
[0119]
In the above embodiment, the voice intake port 20 is formed at the + X side end of the side wall
on the + Y side of the housing 25. However, the present invention is not limited to this. It may be
formed at the end on the -X side of the side wall, or may be formed at the middle in the X-axis
direction of the side wall on the + Y side of the housing 25. In this case, it is necessary to dispose
the microphone 17a at a position corresponding to the voice intake port.
[0120]
In the above embodiment, the intake port 59 is formed in the lower wall of the housing 25.
However, the present invention is not limited to this. In short, the intake port is a wall on which
the audio intake port of the housing is formed (for example, the + Y side) It should just be formed
in walls other than the side wall of. In this case, the exhaust port is preferably formed in a wall
other than the wall in which the air inlet and the sound inlet are formed. In this case, at least one
of the configuration and arrangement of the fans needs to be changed according to the positions
of the intake and exhaust ports.
[0121]
In the above embodiment, the exhaust port 53 is formed on the side wall on the −X side of the
housing 25. However, the present invention is not limited to this. The main point is that the
exhaust port is a wall on which the voice intake port of the housing is formed ( For example, it
may be formed on a wall other than the side wall on the + Y side). In this case, it is preferable to
form the air inlet on a wall other than the wall where the air outlet and the sound inlet are
03-05-2019
33
formed. In this case, at least one of the configuration and arrangement of the fans needs to be
changed according to the positions of the intake and exhaust ports. In particular, if the exhaust
port is formed at the end on the -X side of the side wall on the -Y side, the back of the case 25
from the position farthest from the microphone 17a (the -Y and -X sides of the microphone 17a)
The air can be discharged to the side (−Y side), and the exhaust noise of the fan 19c (including
the wind noise at the exhaust port) can be further prevented from being input through the
microphone 17a.
[0122]
In the above embodiment, the holding member 18 is used as a member for spatially blocking the
microphone 17a, the audio output device 15, and the fan 19c in the housing 25, but in addition
to or instead of this, For example, as the shielding portion is formed by at least one of the upper
cover and the lower cover constituting the housing, the microphone 17a, the audio output device
15, and the fan 19c are spatially separated in the housing 25 by the shielding portion. It is good
to shut off. That is, when the holding member 18 is provided, at least one of the upper cover and
the lower cover may have only the shielding function. On the other hand, when the holding
member 18 is not provided, at least one of the upper cover and the lower cover holds the holder
17b on the housing via the buffer member, and the upper cover and the lower cover have a
shielding function and holding It is good to combine functions.
[0123]
In the above-mentioned embodiment, although case 25 consists of a flat member of a plane view
rectangle, it is not restricted to this, for example, a plane view polygon (however, except
rectangle), a plane view circle, or an upper view elliptical It may be configured by a substantially
flat member whose direction is the thickness direction.
[0124]
In the above-mentioned embodiment, although case 25 consists of a member of the shape of an
approximately rectangular parallelepiped, it is not restricted to this, for example, members of a
polygon pillar other than a rectangular parallelepiped, a member of cylindrical shape, a member
of elliptical pillar shape, etc. And the member which has at least two adjacent walls.
[0125]
03-05-2019
34
In the above embodiment, the video conference apparatus 10 is adopted as a plurality of video
conference apparatuses performing two-way communication. However, the present invention is
not limited to this. For example, the video conference apparatus 10 is adopted as one video
conference apparatus. A configuration different from the teleconferencing device 10 may be
adopted as the conferencing device.
In this case, if the voice of one group output from the speaker of another video conference device
is input through the microphone of the conference device of another television, the voice of the
one group video corresponds to one video conference It will be output from the speaker 15a of
the apparatus 10 (echo will be generated).
However, since it is difficult for one group of voices output from the speaker 15a to be input
through the microphone 17a, repetition of echo is suppressed, and howling is suppressed.
[0126]
In the above embodiment, a nondirectional microphone is adopted as the microphone 17a, but a
microphone having directivity may be adopted.
[0127]
In the above embodiment, the cylindrical shape is adopted as the microphone 17a, but it may be
another shape.
[0128]
In the above embodiment, the voice intake port 20 is configured by the plurality of through holes
20a aligned in the X-axis direction (one row), but the invention is not limited to this. It may be
configured with a plurality of through holes.
In this case, the axis of the microphone 17a preferably passes through the center of the polygon.
[0129]
In the above embodiment, a full range type speaker is adopted as the speaker 15a. However, the
present invention is not limited to this, and for example, a multi-way type speaker may be
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adopted.
[0130]
In the above embodiment, a round speaker is adopted as the speaker 15a (see FIG. 2 and FIG. 3),
but a speaker of another shape may be adopted.
[0131]
In the above embodiment, the microphone 17a is attached to the inner side surface of the side
wall of the housing 25. However, the present invention is not limited to this. For example, the
microphone 17a may be attached to the outer surface of the side wall of the housing 25 It may
be embedded in the side wall of
[0132]
In the above embodiment, the speaker 15a is disposed below the upper wall of the housing 25.
However, the present invention is not limited to this. For example, the speaker 15a may be
attached to the lower surface or the upper surface of the upper wall of the housing 25 It may be
embedded in the upper wall of the body 25.
[0133]
In the said embodiment, although the video conference apparatus 10 is used, for example in a
meeting room, it is not limited to this.
As described above, the teleconferencing device 10 is a small and thin portable type, and is
excellent in portability. Therefore, the teleconferencing device 10 does not have to be set in a
specific conference room, and is expected to be freely carried and used in various places. it can.
That is, the video conference apparatus 10 is very rich in utilities.
[0134]
Although the present invention is applied to a so-called portable type (teleportable) video
conference apparatus 10 in the above embodiment, the present invention can also be applied to a
so-called stationary type video conference apparatus.
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[0135]
Although the video conference apparatus 10 capable of transmitting and receiving images and
sounds (two-way communication) has been described as an example of the conference apparatus
in the above embodiment, the conference apparatus of the present invention is not limited to this.
Also, it may be capable of only transmitting and receiving audio, may be capable of receiving
only image and transmitting and receiving audio, or may be capable of only transmitting and
receiving audio.
[0136]
DESCRIPTION OF SYMBOLS 10 ... Video conference apparatus (conference apparatus), 15a ...
Speaker, 17a ... Microphone, 17c, 17d ... Buffering member, 19 ... Cooling system, 19b ... Heat
sink (heat dissipation member), 20 ... Sound taking-in port, 21 ... Electronic camera, Reference
Signs List 25 housing 43 audio output 53 exhaust port 59 air intake 100 100 heating unit (CPU)
110 network I / F (communication means).
[0137]
Patent Document 1: JP-A-2002-262250 Patent Document 2: JP-A-2006-138972
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