JP2013255012

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DESCRIPTION JP2013255012
An object of the present invention is to provide a head holding member which is excellent in low
cost and maintainability by eliminating the need for an electric circuit, and a head mounted
information output device. A head-mounted information output apparatus according to the
present invention includes an audio output unit (20) capable of outputting sound as sound
waves, and an audio output unit (20) mountable at a predetermined position of a user's head.
And a head holding member 40 provided with a sound transmission unit 46 for transmitting the
sound wave output from the output unit 20 to the head of the user. [Selected figure] Figure 2
Head holding member and head mounted information output device
[0001]
The present invention relates to a head holding member and a head mounted information output
device.
[0002]
2. Description of the Related Art Conventionally, headphones are known for wearing a music
playback device on the head and listening to sounds with the ear (see, for example, Non-Patent
Document 1 below).
[0003]
US Macally made iPod shuffle / nano headphones "mTUNE", [online], February 3, 2006, AV
Watch editorial department, [May 9, 2012 search], Internet <URL: http: //
av.watch.impress.co.jp/docs/20060203/rwc.htm>
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[0004]
However, in the above-mentioned headphones, an electric circuit such as wiring for transmitting
the sound output from the sound reproducing apparatus is also required on the side of the head
band (head holding member) fixed to the head of the user. , There was a problem that the cost
would be high.
In addition, since the electric contact is provided, maintenance management must be
appropriately performed to prevent, for example, the occurrence of rust or short circuit due to
sweat of the user, etc., and the problem that the maintenance work becomes complicated there
were.
[0005]
The present invention has been made in view of the above circumstances, and it is an object of
the present invention to provide a head holding member excellent in low cost and maintainability
by eliminating the need for an electric circuit, and a head mounted information input device. And
[0006]
According to a first aspect of the present invention, there is provided a head holding member
connected to a sound output unit for outputting sound as a sound wave and holding the sound
output unit at a predetermined position of the head of the user so as to be attachable. It is a head
holding member characterized by including a sound wave transmission part which transmits a
sound wave outputted from an output part to the head of the user.
[0007]
According to a second aspect of the present invention, there is provided an audio output unit
capable of outputting sound as a sound wave, and the sound output unit which is attachably held
at a predetermined position of a user's head and output from the audio output unit. And a head
holding member provided with a sound wave transmission unit for transmitting the sound to the
head of the user.
[0008]
In the head-mounted information output device according to the second aspect, the sound output
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unit includes a bone conduction sound output unit that outputs a bone conduction sound, and an
air vibration sound output unit that outputs an air vibration sound. And the output switching unit
configured to switch the outputs of the bone conduction sound output unit and the air vibration
sound output unit according to the usage condition of the sound output unit.
[0009]
In the head-mounted information output device according to the second aspect, the headmounted unit is detachable from the audio output unit, and the audio output unit is attached to
and detached from the head-mounted unit. The output switching unit further includes the
attachment / detachment detection unit, and the output switching unit causes the sound wave
from only the air sound output unit when the head mounted unit is attached to the sound output
unit by the attachment / detachment detection unit. It may be configured to output.
[0010]
Further, in the head-mounted information output device according to the second aspect, a head
detection unit for detecting a mounting state of the user on the head in the head-mounted unit
holding the audio output unit is further provided. The output switching unit may output the
sound wave only from the bone conduction sound output unit when the head mounted unit is
mounted on the head by the head detection unit.
[0011]
In the head-mounted information output device according to the second aspect, the sound
guiding unit includes a plurality of ear covering members covering the user's ears, and the
acoustic speaker and the ear covering members include , And may be acoustically coupled.
[0012]
According to the present invention, by eliminating the need for an electric circuit, it is possible to
provide a head holding member excellent in low cost and maintainability, and a head mounted
information output device.
[0013]
It is a perspective view of the head mounted display of 1st Embodiment.
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It is the perspective view which looked at the head mounted display in the embodiment from the
back side.
It is a horizontal sectional view of the display main body in the embodiment.
It is sectional drawing which shows the principal part structure of the display main body in the
embodiment, and the connection part of a headband.
It is a figure which shows the mounting form of the head mounted display in the embodiment.
It is a perspective view which shows the stereo earphone attached to the head mounted display
in the embodiment.
It is a functional block diagram of the head mounted display in the embodiment.
It is operation ¦ movement explanatory drawing of the headband in the embodiment.
It is a flowchart which shows the procedure of the audio ¦ voice output switching process of the
head mounted display in the embodiment.
It is a flowchart which shows the procedure of the audio output switching process of the head
mounted display in the modification of one Embodiment.
It is the perspective view which looked at the head mounted display in 2nd Embodiment from the
back side. It is sectional drawing which shows the principal part structure of the display main
body in the embodiment, and the connection part of a headband.
[0014]
Hereinafter, although the embodiments according to the head holding member and the head-
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mounted information output device of the present invention will be described with reference to
the drawings, the present invention is not limited thereto. In the following description, an XYZ
orthogonal coordinate system is set as necessary, and the positional relationship of each part will
be described with reference to this XYZ orthogonal coordinate system. A predetermined direction
in the horizontal plane is taken as an X-axis direction, a direction orthogonal to the X-axis
direction in a horizontal plane is taken as a Y-axis direction, and a direction (ie vertical direction)
orthogonal to each of the X-axis direction and the Y-axis direction is taken as a Z-axis direction.
Further, rotation (inclination) directions around the X axis, the Y axis, and the Z axis are taken as
θX, θY, and θZ directions, respectively.
[0015]
First Embodiment FIG. 1 is a perspective view of a head mounted display according to the
present embodiment. FIG. 2 is a perspective view of the head mounted display as viewed from
the back side. FIG. 3 is a horizontal sectional view of the display body 20. As shown in FIG.
[0016]
The head mounted display (head mounted information output device) 1 includes a display main
body (audio output unit) 20 and a head band (head holding member) 40 mounted on the head of
the user and supporting the display main body 20. Is a monocular head mounted display. 1 and
2, the longitudinal direction of the display main body 20 is taken as the Y-axis direction, and the
direction in which the headband 40 holds the head of the user is taken as the X-axis direction.
[0017]
Hereinafter, the configuration of each part of the head mounted display 1 will be described in
detail. As shown in FIG. 1, the display main body 20 includes an apparatus main body 21 which
incorporates a main circuit and includes an operation part and various interfaces, and a display
60 connected to the tip of the apparatus main body 21.
[0018]
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The device body 21 has a substantially plate-shaped housing 21A (see FIG. 3). In this
embodiment, an end (an end on the + Y side) of the apparatus main body 21 where the
connection with the headband 40 is provided is a base end, and an end on the opposite side to
the base ( Let the end on the -Y side be the tip. Further, in a state where the device body 21 is
mounted on the headband 40, the headband 40 side (+ X side) of the device body 21 is inside,
and the side opposite to the headband 40 (−X side) is outside.
[0019]
As shown in FIG. 1, a main switch 28, a touch switch 34, and a sound collecting microphone 24
are disposed on the outer surface of the device body 21 along the longitudinal direction of the
housing 21A. The main switch 28 is a switch for performing an on / off operation of the power of
the display main body 20. The touch switch 34 is a touch panel that can perform various
operations of the head mounted display 1 by touching the surface with a finger or the like. The
sound collection microphone 24 is an external microphone that collects environmental sound.
[0020]
As shown in FIG. 2, an ear speaker (air vibration sound output unit) 23, an audio connector 26,
and a headband hinge 32 having a connecting hole 31 are provided on the proximal end side of
the inner surface of the device body 21. There is. A heart rate sensor 137 is provided at the
center of the inner surface of the device body 21. A call microphone 37 is provided at the tip of
the inner side surface of the device body 21.
[0021]
The ear speaker 23 is disposed near the user's ear. Audio information is transmitted from the ear
speaker 23 to the user. The ear speaker 23 outputs a predetermined sound signal as a sound
wave propagating through air as a medium, and transmits sound (air vibration sound) to the
user's ear. The audio connector 26 is an audio input / output terminal to which, for example, the
earphone shown in FIG. 7 is connected. The headband hinge 32 is a joint with the headband 40.
The voice of the user is input to the call microphone 37.
[0022]
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The heart rate sensor 137 is a sensor that measures the heart rate of the user by contacting the
surface of the user's face. The heart rate sensor 137 has a light emitting unit including a light
emitting diode and the like, and a light receiving unit that detects light reflected inside the skin of
the user. The heart rate sensor 137 counts the heart rate by detecting a change in the amount of
reflected light due to a change in blood flow. The heart rate sensor 137 is disposed near the eyes
of the user, but if the light emitting unit emits light in the infrared range, the user does not feel
glare.
[0023]
The heart rate sensor 137 is provided so as to protrude from the inner surface of the device body
21 and can be brought into contact with the surface of the user's face when the head mounted
display 1 is attached. The battery 33 may be either a rechargeable battery or a disposable
battery.
[0024]
A USB connector 25, an operation switch 30, and a video connector 27 are provided on the side
end surface of the apparatus main body 21 on the proximal end side. The USB connector 25 is a
connection terminal of a USB (Universal Serial Bus) device. In the present embodiment, for
example, a remote controller (not shown) or the like is connected. The operation switch 30 is, for
example, a pointing device such as a track ball or a stick. The operation switch 30 is provided to
face the screen displayed on the display unit 60. Thereby, since the left and right direction of the
operation in the operation switch 30 matches the left and right direction of the screen, the user
can intuitively operate the operation switch 30 while looking at the screen. The video connector
27 is a video input / output terminal.
[0025]
The display unit 60 is connected to the tip of the device body 21 as shown in FIGS. 1 and 2. In
the present embodiment, the headband 40 side of the display unit 60 is inside, and the side
opposite to the headband 40 is outside. The display unit 60 is an arm member having a shape
that is curved in a top view (Z-axis view), and has a shape that curves inward as it goes from the
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connection with the device body 21 toward the tip. A finder opening 67 is provided on the inner
surface of the display unit 60. A camera 64 is provided on the outer surface of the display unit
60.
[0026]
Next, the headband 40 will be described with reference to FIG. As shown in FIG. 2, the headband
40 includes a pair of head pads 46 and 47 for sandwiching the head of the user, a first headband
43, a second headband 44, and rotation mechanisms 56 and 57. Have.
[0027]
The first headband 43 is an elastic member that forms an arc as a whole. A joint portion 43 a for
bending the first headband 43 is provided at the top of the first headband 43. At both ends of the
first headband 43, bearings 43b and 43c that constitute the pivoting mechanisms 56 and 57 are
provided. Bearing portions 43d and 43e to which the head pads 46 and 47 are connected are
provided on the band distal end side further than the bearing portions 43b and 43c.
[0028]
The second headband 44 is an elastic member that forms an arc as a whole. At the top of the
second headband 44, a joint portion 44a for bending the second headband 44 is provided. At
both ends of the second headband 44, shaft members 44b and 44c that constitute the pivoting
mechanisms 56 and 57, respectively, are provided.
[0029]
Further, in the present embodiment, the second headband 44 has a configuration in which the
surface of the spring member 48 made of metal such as stainless steel is coated with a flexible
material such as resin. The spring member 48 of the second headband 44 generates a spring
force for holding the head of the user. The second headband 44 is formed to have a wider width
(thickness) than the first headband 43. The formation portion of the joint portion 44a is a mark
display portion 49 which is formed wider than the other band portions. A product tag or the like
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is attached to the mark display unit 49 by sealing or printing. The entire second headband 44
may be formed of metal.
[0030]
The head pad 46 includes a plate-like support plate 46 a and an elastic member 46 b having a
cross-sectional arch shape provided on one surface side of the support plate 46 a. On the surface
of the support plate 46a opposite to the elastic member 46b, a substantially hexagonal
connection pin 41 is erected in a posture perpendicular to the surface. Further, a contact portion
311 (see FIG. 4) described later is provided at the center of the elastic member 46b.
[0031]
The connection pin 41 is pivotally supported by a bearing 43 d provided at one end of the first
headband 43. Thus, the head pad 46 can rotate around the connection pin 41. In addition, the
display main body 20 is configured to be attachable to and detachable from the headband 40 via
the connection pin 41.
[0032]
The head pad 47 includes a plate-like support plate 47 a and an elastic member 47 b having a
cross-sectional arch shape provided on one surface of the support plate 47 a. A shaft member
47c is provided on the surface of the support plate 47a opposite to the elastic member 47b. The
shaft member 47 c is pivotally supported by a bearing portion 43 e provided at the tip of the first
headband 43. Thus, the head pad 47 can rotate around the shaft member 47c.
[0033]
In the present embodiment, the turning mechanism 56 functions as a biasing mechanism that
biases the second headband 44 away from the first headband 43.
[0034]
On the other hand, the turning mechanism 57 functions as a restricting mechanism that restricts
the rotation angle of the second headband 44.
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[0035]
With the above configuration, the second headband 44 is rotationally biased in a direction away
from the first headband 43 by the pivoting mechanism 56, while the second headband 44 is
within a predetermined angle with the first headband 43 by the pivoting mechanism 57. It is
restricted to rotate in the range of
Thus, the second headband 44 is held at a predetermined angle with respect to the first
headband 43.
Therefore, the pivoting mechanisms 56 and 57 function as an angle holding mechanism in the
headband 40.
[0036]
As shown in FIG. 3, the display unit 60 is connected to the device body 21 via a display hinge 61.
The display hinge 61 is a ball joint including a concave curved storage portion 61a formed in the
housing 60A of the display portion 60 and a spherical portion 61b formed in the device main
body 21 and fitted in the storage portion 61a. .
[0037]
The casing 60A of the display unit 60 includes a proximal casing 60b provided with the display
hinge 61, and a distal casing 60c extended from the proximal casing 60b. The distal end side
housing portion 60c is provided so as to curve or bend inward with respect to the proximal end
side housing portion 60b. A finder opening 67 is provided in the front end side housing 60c.
[0038]
The display unit 60 can freely rotate around the Y ′ axis with respect to the spherical portion
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61 b of the display hinge 61. Thus, by rotating the display unit 60 from the viewable state shown
in FIG. 3A, it is possible to shift to the accommodation state shown in FIG. 3B.
[0039]
The spherical portion 61b of the device main body 21 extends in a direction normal to the
inclined surface 21a extending obliquely with respect to the longitudinal direction of the housing
21A formed at the tip of the outer surface of the device main body 21 (FIG. It is provided to
project in the Y ′ axis direction). In the case of the present embodiment, the inclined surface
21a is parallel to a surface obtained by rotating a surface orthogonal to the longitudinal direction
of the device main body 21 shown in FIG. The display unit 60 is rotatable along the inclined
surface 21 a. Therefore, the rotation direction of the display unit 60 is oblique to the longitudinal
direction of the device body 21.
[0040]
The spherical portion 61 b of the display hinge 61 is formed with a through hole 61 c that
penetrates the spherical portion 61 b in the height direction (Y ′ axis direction). The inside of
the display unit 60 and the inside of the apparatus main body 21 are communicated with each
other through the through hole 61 c.
[0041]
In the present embodiment, a rotation control mechanism of the display unit 60 may be provided
in order to prevent twisting of the cable passed through the display hinge 61. For example, a
rotation control mechanism may be provided which regulates the rotation angle of the display
unit 60 to an upper 180 ° or lower and a lower 180 ° or lower based on the directly-facing
position shown in FIG. 3A.
[0042]
Inside the display unit 60, a backlight 62, a display panel 63, a camera 64, a prism 65, a
reflection mirror 66, a front light 68, a front speaker 70, an imaging lens 71, an imaging device
72 And are provided.
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[0043]
The prism 65 has a configuration in which a substantially triangular first prism 65 a and a
second prism 65 b are attached to each other in a top view (Z-axis view).
A display panel 63 made of a liquid crystal panel is provided at a position facing one of the other
two surfaces of the first prism 65a other than the bonded surface. A back light 62 for
transmitting and illuminating the display panel 63 is disposed on the back of the display panel
63. A reflecting mirror 66 is disposed at a position facing the other surface of the first prism 65a.
The reflection mirror 66 is located substantially in front of the finder opening 67.
[0044]
One of two surfaces other than the bonding surface of the second prism 65 b is a finder eyepiece
surface disposed in the finder opening 67. An imaging element 72 is disposed opposite to the
other surface of the second prism 65b via the imaging lens 71 at a position facing the other
surface.
[0045]
In the display unit 60, the image displayed on the display panel 63 is emitted from the finder
opening 67 via the first prism 65a, the reflection mirror 66, and the second prism 65b, and is
observed by the user. Further, the eyes of the user looking at the finder opening 67 are imaged
on the image sensor 72 through the second prism 65 b and the imaging lens 71. The image of
the eye area acquired via the imaging device 72 is used for analysis of the direction of the user's
line of sight, blinks, and expression. The backlight 62 is also used as a lighting device for
photographing the eyes by the imaging device 72.
[0046]
The camera 64 has an imaging element of, for example, 5,000,000 pixels to 10,000,000 pixels,
and is configured to be capable of an autofocus operation. In the case of the present
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embodiment, the shooting direction of the camera 64 is set to coincide with the user's gaze
direction. Adjustment of the photographing direction and the gaze direction may be performed
mechanically or by image processing. For example, the camera 64 is configured to be capable of
acquiring a wide-angle image, and a part of the electrically captured image is extracted as an
image in the line-of-sight direction based on the information of the line-of-sight direction Display
on 63 As a result, it is possible to capture and display an image in front of the user without
providing an adjustment mechanism in the camera 64.
[0047]
The front light 68 is, for example, an LED light. The front light 68 may have light emitting
elements of red, green, and blue, and may be configured to emit light of any color at any timing.
The front light 68 may be used as a device that displays information to the outside according to
the light emission color and the light emission timing, and may be used as a lighting device when
shooting with the camera 64.
[0048]
Although not shown in FIG. 3, a laser transmitter is provided in the display unit 60 according to
the present embodiment. A laser emitter can be provided, for example, in the vicinity of the front
light 68. By irradiating forward, for example, red laser light emitted from a laser transmitter,
pointing (display of index) by the laser light is possible.
[0049]
A plate-shaped circuit board 29 extending along the longitudinal direction of the housing 21 </
b> A and a battery 33 are incorporated in the device body 21. A control circuit (not shown), a
power supply circuit, and the like are mounted on the circuit board 29 and electrically connected
to each part of the display main body 20 through the wiring (not shown). The circuit board 29 is
electrically connected to each part of the display unit 60 via a cable (not shown) inserted through
the through hole 61c.
[0050]
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Inside the touch switch 34 exposed on the outer surface of the device body 21, a display panel
36 made of a liquid crystal panel and a backlight 35 are disposed. In the present embodiment,
the display image of the display panel 36 is displayed through the touch switch 34. The display
panel 36 and the backlight 35 may be an organic EL panel or an electrophoresis panel.
[0051]
FIG. 4 is a view showing a main part structure of a connection portion of the display main body
20 and the head band 40. The headband hinge 32 is a ball joint including a concave-curved
housing portion 32a provided in the housing 21A as shown in FIG. 4 and a spherical portion 32b
fitted in the housing portion 32a. The spherical portion 32 b has a spherical side portion and two
flat portions formed in parallel with each other so as to sandwich the side portion.
[0052]
The spherical portion 32 b has a protrusion 32 c that protrudes from one flat surface (outside
flat surface). A bone conduction speaker (bone conduction sound output unit) 304 is attached to
the spherical portion 32 b. The bone conduction speaker 304 is composed of a magnet 301, a
yoke 302 and a coil 303. Based on this configuration, the bone conduction speaker 304 outputs
a predetermined sound signal as a sound wave propagating mechanical vibration to the skull as
described later, and transmits the sound (bone conduction sound) to the user.
[0053]
Specifically, the magnet 301 is screwed and attached to the projecting portion 32c. Further, the
coil 303 is loosely fitted to the magnet 301. The yoke 302 is fixed to the coil 303. The coil 303 is
electrically connected to a speaker amplifier 162 described later by a flexible cable (not shown).
According to this configuration, since the cable has flexibility, disconnection of the electrical
connection between the speaker amplifier 162 and the coil 303 can be prevented even if the
spherical portion 32 b is rotated within the predetermined movable range. The magnet 301 and
the yoke 302 are coupled to each other via an elastic member (not shown) so as not to contact
with each other.
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[0054]
Further, in the spherical portion 32b, a connection hole 31 is formed so as to vertically penetrate
the protrusion 32c and the two flat portions. The connection hole 31 is formed in a hexagonal
shape in the axial direction. By inserting the connection pin 41 of the headband 40 into the
connection hole 31, the display body 20 and the headband 40 are connected.
[0055]
Since the ear speaker 23 is disposed at the back of the connection hole 31 of the display main
body 20 as shown in FIGS. 3 and 4, for example, the user holds only the display main body 20 by
hand and holds it on the head In this case, the sound of the ear speaker 23 can be heard.
[0056]
Further, a sound guiding shaft 310 is provided in the connection pin 41.
The sound guiding shaft 310 can slide in the connecting pin 41 in the axial direction (the depth
direction of the connecting hole 31). One end side (the side inserted into the connection hole 31)
of the sound guide shaft 310 protrudes from the connection pin 41 in a state where the
connection pin 41 is not inserted into the connection hole 31.
[0057]
A holding portion 310 a for holding the contact portion 311 is provided on the other end side of
the sound guide shaft 310 (the side opposite to the side inserted into the connection hole 31).
The holding portion 310 a is a member having a substantially disc shape in a plan view, and the
surface on the side of holding the contact portion 311 is curved. The contact portion 311 is
formed of a relatively hard elastic member and directly contacts the skin on the user. The contact
portion 311 is fitted in the opening provided in the elastic member 46 b of the head pad 46.
[0058]
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The contact portion 311 is held in a curved state following the holding surface of the contact
portion 311. As described above, since the contact portion 311 has a curved surface, it is
possible to prevent the user from feeling discomfort such as pain even when the contact portion
311 contacts the skin of the user as described above.
[0059]
When the connecting pin 41 is inserted into and connected to the connecting hole 31 of the
spherical portion 32 b, one end of the sound guiding shaft 310 abuts on the yoke 302. At this
time, since the other end side of the sound guiding shaft 310 is held by the elastic member 46 b
of the head pad 46 via the contact portion 311 as described above, the sound guiding shaft 310
in contact with the yoke 302 is a head pad The elastic force of 46 causes the display body 20 to
be pressed (preloaded). Thereby, when the headband 40 is attached to the head, the sound wave
generated by the yoke 302 of the bone conduction speaker 304 is reliably transmitted to the
contact portion 311 side via the sound guiding shaft 310 and the user who contacts the contact
portion 311 Can be transmitted directly as bone conduction sound to the head of the patient.
[0060]
As described above, according to the present embodiment, the headband 40 adopts the
configuration including the head pad 46 that constitutes the sound wave transmission unit that
transmits the sound wave output from the bone conduction speaker 304 to the head of the user. .
Therefore, the headband 40 does not specially mount an electric circuit etc., but the bone
conduction speaker 304 on the display main body 20 side of the head of the user by the head
pad 46 having a simple configuration such as the sound guiding shaft 310 and the contact
portion 311. The sound (sound wave) output by can be transmitted reliably.
[0061]
Further, since the display main body 20 is provided with the headband hinge 32, it can be
rotated in the A direction shown in FIG. 1 (about the X axis centering on the headband hinge 32).
In the present embodiment, the rotatable range of the display body 20 is about 270 °.
[0062]
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Further, since the headband hinge 32 is a ball joint, the display main body 20 can also be pivoted
in the B direction shown in FIG. 1 (about the Z axis centered on the headband hinge 32). By this
rocking operation, the position of the display body 20 with respect to the eyes and ears of the
user can be adjusted.
[0063]
FIG. 5 is a view showing a mounting form of the head mounted display of the present
embodiment. As shown in FIG. 5, the head mounted display 1 of the present embodiment can be
used in both eyes by the above-described rotation around the X axis. FIG. 5A shows a state in
which the user is looking at the display unit 60 with the right eye. The state seen with the left eye
is shown by FIG. 5 (B). As described above, the head mounted display 1 can realize the switching
function between the form in which the image is observed by the right eye shown in FIG. 5A and
the form in which the image is observed by the left eye shown in FIG. ing.
[0064]
FIG. 6 is a perspective view showing a stereo earphone attached to the head mounted display of
the present embodiment. The stereo earphone 100 has a connector 101, a cable 102, a first
speaker 103, a second speaker 104, a sound collecting microphone 105, and a plurality of clips
106, as shown in FIG.
[0065]
The connector 101 is provided at one end of the cable 102. The connector 101 is a general 4pole φ 3.5 mm mini plug. The breakdown of the four poles is the sound collecting microphone
105, the first speaker 103, the second speaker 104, and the ground (GND). The cable 102 is
bifurcated near the connector 101, and the first speaker 103 is provided at the tip of the
bifurcated cable. At the other end of the cable 102, a second speaker 104 and a sound collecting
microphone 105 are provided. The plurality of clips 106 are disposed on the cable 102 at
predetermined intervals.
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[0066]
The stereo earphone 100 is used by connecting the connector 101 to the audio connector 26 of
the display main body 20. When the stereo earphone 100 is connected, the ear speaker 23 of the
display main body 20 and the call microphone 37 of the display unit 60 are invalidated. The
front speakers 70 of the display unit 60 are also invalidated as necessary. Then, the first speaker
103, the second speaker 104, and the sound collecting microphone 105 of the stereo earphone
100 are activated.
[0067]
The first speaker 103 of the stereo earphone 100 is attached to the user's ear on the side where
the display main body 20 is disposed, and the second speaker 104 is attached to the ear opposite
to the first speaker 103. At this time, the cable 102 can be fixed to the second headband 44 by
the clip 106.
[0068]
Further, stereo recording can be performed by the sound collection microphone 105 of the
stereo earphone 100 and the sound collection microphone 24 provided on the outer surface of
the housing 21A in the display main body 20. For example, assuming that the display main body
20 is disposed on the right eye side as shown in FIG. 5A, the sound collection microphone 24 of
the display main body 20 collects the right sound of the user and is attached to the left ear The
collected sound microphone 105 collects the sound on the left side of the user. The sound of the
right channel is output from the first speaker 103 of the stereo earphone 100, and the sound of
the left channel is output from the second speaker 104.
[0069]
On the other hand, when the display main body 20 is disposed on the left eye side as shown in
FIG. 5B, the sound collection microphone 24 of the display main body 20 collects the sound of
the left side of the user and is mounted on the right ear The collected sound microphone 105
collects the right sound of the user. The sound of the left channel is output from the first speaker
103 of the stereo earphone 100, and the sound of the right channel is output from the second
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speaker 104.
[0070]
In the case of the present embodiment, both of the sound collecting microphones 24 and 105 are
disposed in the vicinity of the user's ear, so that realistic recording such as binaural recording
can be performed. Further, by using microphones having the same characteristics as the sound
collection microphone 24 and the sound collection microphone 105, it is possible to reduce the
difference in the characteristics of the left and right sounds.
[0071]
FIG. 7 is a functional block diagram of the head mounted display 1. The head mounted display 1
is provided with various electric circuits centering on the processing unit 123. The processing
unit 123 is a CPU (Central Processing Unit), and is connected to various circuits of the head
mounted display 1, and comprehensively controls the head mounted display 1.
[0072]
In the case of this embodiment, the processing unit 123 includes the encoder 129 and the
decoder 121, the power supply circuit 120, the operation switch 30, the flash memory 122, the
BT communication circuit 130, the WiFi communication circuit 131, the acceleration sensor 132,
the geomagnetic sensor 133, and the front light 68, 3G / LTE communication circuit 138, laser
transmitter 73, angular velocity sensor 134, GPS sensor 135, temperature / humidity sensor
136, heart rate sensor 137, memory 127, main switch 28, touch switch 34, head band sensor
163 are connected ing.
[0073]
The encoder 129 encodes (codes) the audio signal and the video signal into audio data and video
data of a predetermined system.
Connected to the encoder 129 are a camera 64, an image sensor 72, a sound collection
microphone 24, a call microphone 37, an audio connector 26, and a video connector 27.
09-05-2019
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[0074]
The encoder 129 includes audio signals input from the sound collection microphone 24 and the
call microphone 37, video signals input from the camera 64, audio signals input from the audio
connector 26, video signals input from the video connector 27, and The video signal of the image
pickup device 72 for photographing the eyes of the user is input. The audio signal and the video
signal input to the encoder 129 are encoded into audio data and video data, and then input to the
processing unit 123. The input audio data and video data are used for reproduction operation by
the processing unit 123 or recorded in the flash memory 122.
[0075]
The decoder 121 decodes audio data and video data into an audio signal and video signal. An
LCD driver 125, a speaker amplifier 162, an audio connector 26, and a video connector 27 are
connected to the decoder 121. The LCD driver 125 is a drive control device for a liquid crystal
panel, and is connected to the display panel 36 and the display panel 63. The speaker amplifier
162 is a device that amplifies an audio signal and outputs it to a speaker, and is connected to the
ear speaker 23 and the front speaker 70.
[0076]
When reproducing video data, the video data recorded in the flash memory 122 or the video data
input from the encoder 129 is input to the decoder 121 via the processing unit 123. The video
data input to the decoder 121 is decoded into a video signal and then supplied to the display
panels 36 and 63 via the LCD driver 125. Then, a video based on the video data is displayed on
the display panel 36 or the display panel 63 to which the video signal is input. Further, the video
signal output from the decoder 121 to the video connector 27 is output to an external device via
the video connector 27.
[0077]
In addition, when displaying an image, the processing unit 123 lights the backlight 35 for the
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display panel 36 and the backlight 62 for the display panel 63 as necessary. The BL driver 126 is
a drive control device for backlight, and is connected to the backlight 35 and the backlight 62.
The processing unit 123 transmits a drive signal to the BL driver 126, and the BL driver 126
lights the backlights 35 and 62 individually.
[0078]
When reproducing audio data, the audio data recorded in the flash memory 122 or the audio
data input from the encoder 129 is input to the decoder 121 via the processing unit 123. The
audio data input to the decoder 121 is decoded into an audio signal and then output to one or
both of the ear speaker 23 and the front speaker 70 via the speaker amplifier 162. Then, the
audio is output from the ear speaker 23 or the front speaker 70 to which the audio signal is
input. Further, an audio signal output from the decoder 121 to the audio connector 26 is output
to the stereo earphone 100 via the audio connector 26.
[0079]
In the case of this embodiment, the use of monaural sound is assumed for the ear speaker 23 and
the front speaker 70, and the ear speaker 23 and the front speaker 70 emit sounds in which the
left and right audio signals are synthesized.
[0080]
On the other hand, when an audio signal is output to the stereo earphone 100, the sound of the
left channel or the right channel of the first speaker 103 and the second speaker 104 is output.
Here, since the head mounted display 1 of the present embodiment is for both left and right, the
channel of the audio signal to the stereo earphone 100 is switched according to the mounting
position. That is, when the display main body 20 is attached to the right eye, the sound of the
right channel is output to the first speaker 103 and the sound of the left channel is output to the
second speaker 104. When the display main body 20 is attached to the left eye, sounds of the left
channel are output to the first speaker 103 and sounds of the right channel are output to the
second speaker 104.
[0081]
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The memory 127 stores a control program to be executed by the processing unit 123. When the
user operates the main switch 28 for turning on and off the entire power supply, the operation
switch 30 for performing pointing operation in the screen, or the touch switch 34 for performing
various operations by touch operation, the operation is performed from these switches A control
signal based on the signal is output to the processing unit 123. The processing unit 123 detects
an operation based on the control signal, and executes an operation defined in the above control
program.
[0082]
The BT communication circuit 130 is a communication circuit for performing Bluetooth
(registered trademark) communication with another device. The WiFi communication circuit 131
is a communication circuit for performing wireless LAN communication (IEEE 802.11) with
another device. The 3G / LTE communication circuit 138 is a communication circuit for
performing mobile communication with another device.
[0083]
The acceleration sensor 132 is used to detect the tilt of the head mounted display 1. The
geomagnetic sensor 133 is used to detect the direction of the head mounted display 1. An
angular velocity sensor (gyro sensor) 134 is used to detect the rotation of the head mounted
display 1. The GPS sensor 135 is used for positioning detection using a GPS (Global Positioning
System). The temperature and humidity sensor 136 is used to detect the temperature and
humidity of the environment. The heart rate sensor 137 contacts the user's cheek and detects the
user's heart rate.
[0084]
The head band sensor 163 is for detecting the connection pin 41 provided on the head band 40.
Specifically, the headband sensor 163 detects a state in which the connection pin 41 is inserted
into the connection hole 31, that is, a state in which the headband 40 and the display main body
20 are connected.
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[0085]
When the head band sensor 163 detects the connection pin 41, the detection signal is
transmitted to the processing unit 123. The processing unit 123 functions as an output switching
unit that switches the outputs of the bone conduction speaker 304 and the ear speaker 23
according to the flowchart of FIG. 9 described later.
[0086]
Next, the operation and the like of the head band in the head mounted display 1 will be described
with reference to FIGS. FIG. 8 is an explanatory view of the operation of the headband.
[0087]
As shown in FIG. 5, the head mounted display 1 of the present embodiment can be used by
switching between the right-eye observation form shown in FIG. 5 (A) and the left-eye
observation form shown in FIG. 5 (B). . For example, in order to switch from the right-eye
observation mode to the left-eye observation mode, the display main body 20 coupled to the
headband 40 is rotated about 180 degrees around the rotation axis of the display hinge 61
(direction A in the drawing). Further, in the headband 40, the second headband 44 is pivoted
about the axes of the pivoting mechanisms 56 and 57 and moved to the opposite side with
respect to the first headband 43. By this operation, as shown in FIG. 5B, the display main body
20 is disposed on the left eye side of the user, and the second headband 44 is switched to the left
eye observation form disposed on the occipital side of the user. it can.
[0088]
In the present embodiment, as shown in FIG. 8A, the arc height r1 of the first headband 43 is
smaller than the arc height r2 of the second headband 44. Thereby, even if the second headband
44 is moved to cross the first headband 43, the front and back can be smoothly interchanged
without interfering with each other. The arc height r1 shown in FIG. 8A is the maximum value of
the distance from the center position C of the rotation axis L of the turning mechanisms 56 and
57 coaxially disposed to the first headband 43. The arc height r2 is the maximum value of the
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distance from the center position C of the rotation axis L to the second headband 44.
[0089]
The arc height r1 of the first headband 43 may be made larger than the arc height r2 of the
second headband 44, and the second headband 44 may be swung inside the first headband 43.
[0090]
Further, as shown in FIGS. 8B and 8C, the headband 40 of the present embodiment has a
configuration in which the first headband 43 and the second headband 44 can be folded.
In order to fold the headband 40, first, from the state in which the headband 40 shown in FIG. 5
is opened, as shown in FIG. 8A, the second headband 44 is moved so as to approach the first
headband 43. Let Thereafter, the joint portion 43a provided in the first headband 43 and the
joint portion 44a provided in the second headband 44 are respectively bent to make the head
pad 47 a head pad as shown in FIG. 8B. Move to the 46 side. By further bending the joint
portions 43a and 44a from the state of FIG. 8B, it is possible to fold the head pads 46 and 47 to a
position where the head pads 46 and 47 overlap, as shown in FIG. 8C.
[0091]
In the present embodiment, the joint portions 43a and 44a are provided at positions closer to the
head pad 47 from the centers of the first headband 43 and the second headband 44,
respectively. The hinges of the joint portions 43a and 44a are connected such that the band
connected to the head pad 47 is on the inside. As a result, in the folded state shown in FIG. 8C,
the head pad 47 is disposed on the inner side (elastic member 46 b side) of the head pad 46.
According to this configuration, the headband 40 can be compactly compacted so that the
connecting pins 41 protruding from the head pad 46 do not get in the way.
[0092]
In order to return the headband 40 from the folded state to the opened state, it is only necessary
to shift from the most closed state shown in FIG. 8C to the slightly opened state shown in FIG. 8B.
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Since the second headband 44 is biased in the direction away from the first headband 43 by the
pivot mechanism 56, the restoring force in the direction to open the joint portions 43a and 44a
simply by returning to the state of FIG. 8B. Acts and returns to the state shown in FIG. 8 (A)
naturally. Further, from the state shown in FIG. 8A, the second headband 44 is swung by the
biasing force of the rotation mechanism 56, and is expanded to the state shown in FIG.
[0093]
In the headband 40 according to the present embodiment, when folded back from the unfolded
state and returned to the unfolded state again, the arrangement of the first headband 43 and the
second headband 44 is maintained in most cases. That is, when the headband 40 is returned to
the original state after the right-eye observation form shown in FIG. 5A is changed to the folded
state shown in FIG. 8C, the right-eye observation form shown in FIG. .
[0094]
The pivoting mechanism 56 that applies the biasing force to the second headband 44 has a
toggle structure that applies the biasing force to the first headband 43 in both the front and back
directions, but the biasing direction of the pivoting mechanism 56 It is necessary to switch the
front and back positions of the first headband 43 and the second headband 44 in order to switch
between the two. However, when the headband 40 is folded, as shown in FIG. 8A, if the joint
portions 43a and 44a are bent by bringing the first headband 43 and the second headband 44
close, as shown in FIG. 8B. It is possible to shift to the state shown in Therefore, the front and
back positions of the first headband 43 and the second headband 44 are hardly interchanged in
practice. In this case, since the biasing direction of the rotation mechanism 56 is hardly switched,
when unfolded from the folded state, the state before folding is restored.
[0095]
Next, with reference to FIG. 9, the switching operation of the audio output of the head mounted
display 1 will be specifically described. FIG. 9 is a flowchart showing the procedure of the audio
output switching process of the head mounted display 1.
[0096]
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25
For example, when the user turns on the main switch 28 of the display main body 20 and the
power of the display main body 20 is turned on, the processing unit 123 starts step S10. In step
S10, the processing unit 123 sets the output of the speaker amplifier 162 from the ear speaker
23 first. This assumes that the display body 20 is not connected to the headband 40, and the
user holds the display body 20 by hand directly.
[0097]
Next, in step S11, the processing unit 123 determines whether or not the connecting pin 41 has
been detected. Thus, the processing unit 123 determines whether the headband 40 is connected
to the display main body 20 via the connection pin 41. If the processing unit 123 detects the
connecting pin 41 (S11: Yes), that is, if the headband 40 is connected to the display main body
20, the processing proceeds to the process of step S12. In the description of step S12, it is
assumed that the head mounted display 1 is mounted on the head of the user.
[0098]
On the other hand, when the connection pin 41 can not be detected (S11: No), that is, when the
headband 40 is not connected to the display main body 20, the processing unit 123 proceeds to
the process of step S13.
[0099]
In step S12, the processing unit 123 disconnects the speaker amplifier 162 from the speaker 23
and connects the coil 303 of the bone conduction speaker 304 to the speaker amplifier 162.
That is, the processing unit 123 turns off the output of the ear speaker 23 and turns on the
output of the bone conduction speaker 304.
[0100]
The bone conduction speaker 304 vibrates the yoke 302 to generate an acoustic wave. Here,
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26
when the headband 40 is connected to the display main body 20, the sound guiding shaft 310
inserted into the connection hole 31 is in contact with the yoke 302 as described with reference
to FIG. Vibration is transmitted to the sound guiding shaft 310. Since the contact part 311 is
connected to the sound guiding shaft 310 via the holding part 310 a, the vibration of the sound
guiding shaft 310 is transmitted to the contact part 311.
[0101]
When the head band 40 is worn by the user, the contact portion 311 of the head pad 46 contacts
the head. As a result, the display body 20 is not the ear speaker 23 but the sound wave (sound)
emitted from the bone conduction speaker 304 is transmitted as mechanical vibration to the
head of the user via the sound guiding shaft 310 and the contact portion 311. Thus, the sound
output from the display body 20 is transmitted to the user as bone conduction sound.
[0102]
In the present embodiment, although the sound guide shaft 310 is pressed against the display
main body 20 by the elastic force of the head pad 46, when the head contacts the contact portion
311 of the head pad 46, the contact portion 311 The elastic member 46b to be held is elastically
deformed so that the sound guiding shaft 310 connected to the contact portion 311 is pressed
by the yoke 302 side. Therefore, the sound guiding shaft 310 can reliably transmit the vibration
generated in the above-described yoke 302 to the head of the user and can more clearly transmit
the bone conduction sound.
[0103]
In step S13, the processing unit 123 determines whether or not the stereo earphone 100 is
connected to the display main body 20. If the processing unit 123 detects the stereo earphone
100 (S13: Yes), that is, if the stereo earphone 100 is connected to the display main body 20, the
processing unit 123 proceeds to the processing of step S14. In the description of step S14, it is
assumed that the head mounted display 1 is mounted on the head of the user.
[0104]
On the other hand, when the stereo earphone 100 can not be detected (S13: No), that is, when
09-05-2019
27
the stereo earphone 100 is not connected to the display main body 20, the processing unit 123
ends the processing of this flowchart.
[0105]
In step S14, the processing unit 123 determines that the user desires to use the stereo earphone
100, and disconnects the bone conduction speaker 304 and the ear speaker 23 from the speaker
amplifier 162, and the stereo earphone 100 and the speaker amplifier 162. And connect.
That is, the processing unit 123 turns off the outputs of the bone conduction speaker 304 and
the ear speaker 23. Therefore, the sound output from the display main body 20 is transmitted to
the user by the stereo earphone 100.
[0106]
As described above, according to the head band 40 according to the present embodiment, there
is no need to specially mount an electric circuit etc., and a display is provided by the head pad 46
having a simple configuration such as the sound guiding shaft 310 and the contact portion 311.
The sound wave output from the main body 20 (bone conduction speaker 304) can be
transmitted to the head of the user as bone conduction sound at low cost. In addition, since the
headband 40 on which the electric circuit is not mounted has no electric contact, there is no need
to perform maintenance management to prevent the occurrence of rust or the occurrence of a
short circuit, and the maintainability can be significantly improved.
[0107]
Further, the head mounted display 1 can output sound from the ear speaker 23 when the user
uses the display main body 20 close to the head by hand without using the head band 40.
[0108]
In addition, when the headband 40 is connected to the display main body 20, the head mount
display 1 receives the sound wave (sound) output from the bone conduction speaker 304
contained in the display main body 20 as the head pad 46 (contact portion 311). It can be
transmitted to the head as a mechanical vibration and the user can hear the bone conduction
sound.
09-05-2019
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[0109]
That is, the head mounted display 1 has the bone conduction speaker 304 and the bone
conduction speaker 304 according to the usage condition of the display main body 20 (whether
or not the headband 40 is attached (S11) and whether the stereo earphone 100 is attached
(S13)). The output of the ear speaker 23 can be switched.
Therefore, the head mounted display 1 has a high added value that can appropriately select an
optimal audio output form according to the application of the user.
[0110]
In the above description, although the processing unit 123 switches the outputs of the bone
conduction speaker 304 and the ear speaker 23 according to the usage of the display main body
20, the bone conduction speaker 23 and the ear speaker 23 are described as an example. May be
output simultaneously.
According to this, since the user can hear the sound output from the display main body 20 from
the ear and also transmit it as bone conduction sound through the skull, it is desirable even
when, for example, working in a loud noise Can clearly hear the sound of
[0111]
In addition, although the display main body 20 in the above-described embodiment includes the
ear speaker 23 in addition to the bone conduction speaker 304, the structure of the display main
body 20 is not limited to this example. It is also possible to have a configuration. The sound
waves emitted from the bone conduction speaker 304 can be heard around by vibrating air, and
therefore the ear speaker 23 may be eliminated as described above if the sound quality to be
output is not particular.
[0112]
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29
Moreover, although the display main body 20 in the said embodiment was provided with the
bone conduction speaker 304 and the ear speaker 23, respectively, even if it shares members,
such as a coil, a bone conduction speaker and an ear speaker may be integrated. Good.
[0113]
(Modification of the First Embodiment of the Present Invention) In the above-described
embodiment of the present invention, the processing unit 123 is in a state where the headband
40 is connected to the display main body 20, ie, the display main body 20 is used as the head
mounted display 1 Sound output is switched to determine whether or not the mode is selected.
The determination criterion for switching the voice output is not limited to this example, and
whether or not the display main body 20 is actually worn on the head of the user can be used as
the determination criterion. The specific example will be described.
[0114]
FIG. 10 is a flowchart showing the procedure of the audio output switching process of the head
mounted display 1 in the modification. Hereinafter, the switching operation of the audio output
of the head mounted display 1 in the modification will be specifically described with reference to
FIG.
[0115]
As in the above embodiment, when the user turns on the main switch 28 of the display main
body 20 and the power of the display main body 20 is turned on, the processing unit 123 starts
step S20. In step S <b> 20, the processing unit 123 sets the output of the speaker amplifier 162
from the ear speaker 23 first.
[0116]
Next, in step S21, the processing unit 123 determines whether the heart rate sensor 137 has
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detected the head of the user. The heart rate sensor 137 receives infrared light reflected inside
the skin of the user, and counts the heart rate by detecting a change in the amount of reflected
light due to a change in blood flow. The processing unit 123 naturally detects the heart beat, and
when the infrared light emitted from the light emitting unit in the heart rate sensor 137 is
detected by the light receiving unit, the display main body 20 is in contact with the head of the
user (S21: Yes), and the process proceeds to step S22.
[0117]
On the other hand, when the infrared light can not be detected by the light receiving unit, the
processing unit 123 determines that the display main body 20 is not in contact with the head of
the user (S21: NO), and proceeds to the processing of step S23.
[0118]
In step S22, the processing unit 123 turns off the output of the ear speaker 23 and turns on the
output of the bone conduction speaker 304.
Thus, the head mounted display 1 can transmit the sound output from the display main body 20
to the user as bone conduction sound.
[0119]
In step S23, the processing unit 123 determines whether or not the stereo earphone 100 is
connected to the display main body 20. When the processing unit 123 detects the stereo
earphone 100 (S23: Yes), the processing proceeds to step S24. On the other hand, when the
processing unit 123 can not detect the stereo earphone 100 (S23: No), the processing of this
flowchart is ended.
[0120]
As described above, according to the flowchart in the present modification, it is possible to hear
the bone conduction sound only when the display main body 20 is firmly in contact with the
user's head. Therefore, when the user holds and uses the display main body 20, bone conduction
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noise occurs when the display main body 20 is in contact with the head, and sound is emitted
from the ear speaker 23 when not in contact with the head. By appropriately selecting the
optimal audio output form according to the user, the user can surely hear the sound.
[0121]
Moreover, in the said modification, although the case where it was determined by the heart rate
sensor 137 whether the display main body 20 was mounted ¦ worn with a user's head was
mentioned as an example, this invention is not limited to this. For example, a sensor (not shown)
capable of detecting the eye (retina) of the user is provided on the inner surface side of the
display unit 60 of the display main body 20, and the display main body 20 is on the head of the
user when the sensor It may be determined that they are in contact and the outputs of the bone
conduction speaker 304 and the ear speaker 23 may be switched as described above.
[0122]
Second Embodiment Subsequently, a head mounted display according to a second embodiment
will be described with reference to the drawings. FIG. 11 is a perspective view of the head
mounted display 200 in the present embodiment as viewed from the back side. FIG. 12 is a view
showing the main part structure of the connection portion of the display body and the headband
in the present embodiment.
[0123]
The difference between the present embodiment and the above-described embodiment is the
configuration of a part of the display body and the headband, and the other configuration is
common. In the following description, the same components and members as those of the abovedescribed embodiment are denoted by the same reference numerals, and the detailed description
thereof is omitted or simplified.
[0124]
The headband 340 of the head mounted display 200 in this embodiment is provided with ear
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cups (ear covering members) 346 and 347 instead of the head pads 46 and 47 at both ends as
shown in FIGS. The ear cups 346 and 347 are attached at positions that can cover the ears of the
user's head when the head mounted display 200 is attached to the head of the user.
[0125]
The ear cups 346 and 347 constitute an audio transmission unit that transmits the output sound
of the display main body 220 by covering the user's ears. The ear cups 346 and 347 are made of,
for example, an elastic resin member or the like so as to prevent the user from feeling
uncomfortable when worn. The ear cups 346, 347 have collar portions 346a, 347a whose
outline cross section is in the shape of a bowl, and abutment portions 346b, 347b abutting on
the head of the user.
[0126]
In addition, the display main body 220 in this embodiment differs from the said embodiment, has
only the ear speaker 23, and a bone conduction speaker is not mounted. Specifically, as shown in
FIG. 12, in the display body 220, the ear speaker 323 is disposed at a position overlapping the
communication hole 331 of the spherical portion 332b of the headband hinge 332 in plan view.
[0127]
The ear cups 346, 347 have openings 348, 349 formed at the bottom. The openings 348 and
349 are for transmitting the sound output from the in-ear speaker 323 of the display main body
220 to the user's ear.
[0128]
On the bottom side of the collar portion 346a of the ear cup 346, a substantially hexagonal
connection pin 341 is erected in a posture perpendicular to the bottom surface. The connecting
pin 341 has a hole 341a, which is in communication with an opening 348 formed on the bottom
of the collar 346a. With this configuration, when the headband 340 (ear cup 346) and the
display main body 220 (headband hinge 332) are connected by inserting the connecting pin 341
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into the communication hole 331 of the spherical portion 332b, the ear speaker 323 is used. The
outputted sound wave is transmitted through the hole 341 a into the space 346 c of the ear cup
346.
[0129]
In addition, the ear cups 346 and 347 are connected to each other by the first band 343. The
first band 343 has a hollow sound conduit 343a, and the ear cups 346, 347 are connected via
the sound conduit 343a. By this configuration, the ear cups 346, 347 are acoustically coupled.
Here, being acoustically coupled means that the spaces in the ear cups 346 and 347 are
continuous as the same medium (air). That is, if acoustically coupled, the sound wave input to the
other space can propagate to the other space.
[0130]
Then, the sound wave of the ear speaker 323 transmitted to the space 346 c of the ear cup 346
is also transmitted to the space 347 c of the ear cup 347 through the sound conduit 343 a. That
is, the ear cups 346 and 347 and the sound conduit 343a provided in the headband 340
constitute a sound wave transmission unit for transmitting the sound wave (sound) output from
the display body 220 to the head of the user.
[0131]
As described above, according to the headband 340 of the head mounted display 200 in the
present embodiment, the ear cups 346 and 347 and the sound conduit 343a do not require any
electrical components, and the display main body 220 (ear speaker 323 Can be transmitted to
the user's ears. Therefore, as in the above embodiment, since there is no electrical contact, there
is no need to perform maintenance management to prevent the occurrence of rust or the
occurrence of a short circuit, and high maintainability can be obtained.
[0132]
The sound conduit 343a as described above may be configured integrally with not only the
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34
headband but also a helmet or the like worn on the head. That is, the head holding member in the
head mounted display may be replaced by a helmet structure that covers the entire head from
the head band.
[0133]
Further, although the case where the sound conduit 343a is filled with air has been described as
an example, the present invention is not limited to this. Specifically, the sound conduit 343a may
be filled with a liquid. In this case, the sound wave output from the in-ear speaker 323 can be
favorably transmitted from the ear cup 346 side to the ear cup 347 side by transmitting the
inside of the sound conduit 343a by using the liquid as a medium. In addition, since it becomes
possible to transmit bone conduction sound using the liquid as a medium if the liquid is filled in
the sound conduit 343a in this way, the bone conduction speaker is mounted on the display main
body 220 side as in the above embodiment. You may do it.
[0134]
The embodiment of the present invention has been described in detail with reference to the
drawings. However, the specific configuration is not limited to the embodiment, and can be
appropriately changed without departing from the scope of the present invention.
[0135]
1, 200 ... head mounted display (head mounted device), 20, 220 ... display main body (voice
output unit), 23 ... ear speaker (air vibration sound output unit), 40, 340 ... head band (head
holding unit) 41: connection pin 46: head pad (sound wave transmission unit) 123: processing
unit 137: heart rate sensor (head detection unit) 304: bone conduction speaker (bone conduction
sound output unit) 310: sound conduction Shaft 311: contact portion 323 ear speaker (air
vibration sound output portion) 343a sound conduit (sound wave transmission portion) 346 ear
cup (ear covering member) 347 ear cup (ear covering member)
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