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JPWO2015022766

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DESCRIPTION JPWO2015022766
Abstract: This headphone-type acoustic device is connected to a headband, a pair of slide blocks
slidably attached at one end to each end of the headband, and the other end of each of the pair of
slide blocks through a connecting portion. And a pair of housing blocks each provided with a
headphone unit, and a speaker unit disposed respectively in the pair of slider blocks.
Headphone type sound device
[0001]
The present technology relates to a headphone-type acoustic device integrally equipped with a
headphone and a speaker used when listening to music.
[0002]
Many of the headphones are of the type called sealed.
Sealed headphones are acoustic devices that are configured to produce an optimal sound in a
sealed space that exists between the headphone unit and the ear. On the other hand, the speaker
is designed on the premise of listening to the sound at a certain distance. Headphones and
speakers are structurally similar, and the biggest difference may be the difference in power
(sound pressure) that causes air to vibrate. That is, although the headphones may have sufficient
power to vibrate the air in the above-mentioned enclosed space, the speakers require a large
amount of power to vibrate the space with the user.
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1
[0003]
In Patent Document 1, by switching the output power of the headphone speaker between a small
level for the headphone and a large level for the speaker by the operation of the changeover
switch, both the headphone function and the speaker function are provided. Headphones are
disclosed.
[0004]
However, in the headphone of Patent Document 1, the output power of the speaker unit provided
in the housing is merely switched between a small level for the headphone and a large level for
the speaker.
Therefore, when using a speaker unit as a speaker, it must be used as a stationary speaker. At
this time, the distance between the speaker units provided in the left and right housings is
insufficient to exhibit a sufficient stereo effect in stereo reproduction.
[0005]
Unexamined-Japanese-Patent No. 2010-74831 (Paragraph [0019] etc.)
[0006]
In a headphone type sound device in which a headphone and a speaker are integrally mounted,
for example, improvement in performance such as ease of use and sound quality of the speaker
has been desired.
[0007]
In view of the circumstances as described above, it is an object of the present technology to
improve the performance of a headphone type acoustic device in which a headphone and a
speaker are integrally mounted.
[0008]
In order to solve the above problems, a headphone type acoustic device according to the present
technology includes a headband, a pair of slider blocks slidably attached at one end to both ends
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of the headband, and the pair of slider blocks And a pair of housing blocks each including a
headphone unit, and a speaker unit respectively disposed on the pair of slider blocks.
[0009]
In the headphone type sound device according to the present technology, in addition to the
headphone units respectively provided in the pair of housing blocks, the speaker units are
respectively provided in the pair of slider blocks.
When enjoying music using the speaker unit, the headband and the left and right slider blocks
may be hung on the user's neck.
In this wearing state, since the pair of speaker units are respectively located below the user's left
and right ears, the sound from each speaker unit well reaches the user's ear through the space.
Further, since the speaker unit is provided in the slider block, the positional relationship between
the speaker unit and the user's ear can be adjusted by sliding the slider block.
[0010]
The above-mentioned headphone type acoustic device comprises: a first amplifier capable of
amplifying an audio signal supplied to the headphone unit; a second amplifier capable of
amplifying an audio signal supplied to the speaker unit; and a switching instruction from a user
And a control unit that switches between the first amplifier and the second amplifier in
accordance with the instruction received by the operation unit.
[0011]
As a result, the user can freely switch between the headphone unit and the speaker unit the unit
to which the sound is to be output.
[0012]
The speaker unit contains a diaphragm capable of vibrating in the thickness direction of the
slider block, a magnetic circuit for driving the diaphragm, the diaphragm and the magnetic
circuit while holding the diaphragm exposed. Forming a space between the speaker driver unit
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including the case and the surface of the case where the diaphragm is exposed, and one end of
the space in a direction orthogonal to the slide direction of the slider block And a lid having an
opening for escaping the sound.
[0013]
A speaker unit when the headphone type acoustic device is used by hanging it on the user's neck
by providing an opening to allow sound to escape from one end of the space in a direction
orthogonal to the slide direction of the slider block The sound from can be emitted towards the
user's ear.
As a result, the user can enjoy music at a sufficient volume without raising the volume of the
speaker unit very much.
[0014]
One end of the space in the direction orthogonal to the sliding direction of the slider block is the
front side in a state where the user wears the headphone type acoustic device.
[0015]
As described above, according to the present technology, it is possible to improve the
performance of a headphone type acoustic device in which a headphone and a speaker are
integrally mounted.
[0016]
It is a figure showing the appearance of the headphone type acoustic device of a 1st embodiment
concerning this art.
It is sectional drawing which shows the structure of the headphone type acoustic device of FIG.
It is a longitudinal cross-sectional view of a speaker unit.
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It is a cross-sectional view of a speaker unit.
It is an external view which removes and shows the structure of the speaker unit 24. FIG.
It is a figure which shows the head mounting ¦ wearing form of the headphone type acoustic
apparatus of this embodiment. It is a figure which shows the neck form of the headphone type
acoustic device of this embodiment. It is a figure which shows the electric constitution of the
headphone type acoustic device of this embodiment. It is a figure which shows the adjustment
method of a speaker position.
[0017]
Hereinafter, embodiments according to the present technology will be described with reference
to the drawings. First Embodiment [Configuration of Headphone-Type Sound Device] FIG. 1 is a
view showing an appearance of a headphone-type sound device according to a first embodiment
of the present technology. As shown in the figure, the headphone type acoustic device 100
includes a headband 10, left and right slider blocks 20R and 20L, left and right hangers 30R and
30L (connection parts), and left and right housing blocks 40R and 40L. In addition, "R" of a code
means the right, "L" means the left, and let right and left be directions from the user wearing this
headphone type sound device 100.
[0018]
The head band 10 is, for example, made of a thin plate made of synthetic resin, for example,
made of a synthetic resin, which is curved at a substantially predetermined curvature and
flexible, so that it can be hooked on the head or neck of the human body. Housing blocks 40R
and 40L are attached to both ends of the headband 10 via slider blocks 20R and 20L and
hangers 30R and 30L, respectively.
[0019]
FIG. 2 is a cross-sectional view showing the configuration of the headphone type acoustic device
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100 of FIG. The slider blocks 20R and 20L each include a slider base 21, a slider cover 22, a
hanger connecting portion 23, and a speaker unit 24.
[0020]
The slider base 21 is provided on the inside of the insertion portion 25 into which the one end
11 of the headband 10 is inserted and the inside of the insertion portion 25 in order to slidably
hold the one end 11 of the headband 10. And a hooking structure (not shown) for locking the
insertion position of the headband 10 by hooking a hooking part (not shown) such as a
projection provided on the surface of the end 11 of the headband 10 It is provided. The user can
adjust the housing blocks 40R and 40L to the left and right ears of the user by appropriately
manually adjusting the insertion amount of the one end 11 of the headband 10.
[0021]
The slider cover 22 is a cover for the exterior of the slider base 21. The hanger connecting
portion 23 is a portion connected to the hangers 30R and 30L described later. In each of the
slider blocks 20R and 20L, a speaker unit 24 including a component group necessary for causing
the headphone type acoustic device 100 of the present embodiment to function as a speaker is
fixed. The "speaker" referred to here is an acoustic device that vibrates the air in the open space
around it to transmit the sound to the user, and the "headphones" vibrate the air sealed by the
housing block to transmit the sound to the user Used in this specification as a term having a
different meaning from.
[0022]
The hangers 30R and 30L are a first connecting portion 31 for connecting the slider blocks 20R
and 20L to the hanger connecting portion 23, and a second connecting portion 32 for
connecting the housing blocks 40R and 40L (see FIG. 1). Have. The first connecting portion 31
has a shaft 33. The shaft portion 33 is connected to a bearing portion 27 provided on the hanger
connection portion 23 of the slider blocks 20R and 20L. The bearing portion 27 is a component
for rotatably holding the shaft portion 33 of the first connecting portion 31 of the hangers 30R
and 30L. Thus, the hangers 30R and 30L are connected to the slider blocks 20R and 30L by
connecting the shaft portions 33 of the first connection portions 31 of the hangers 30R and 30L
to the bearings 27 of the hanger connection portions 23 of the slider blocks 20R and 20L. It is
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connected in a rotatable state in a direction around the axis with respect to 20L.
[0023]
In addition, sufficient durability is provided by providing the 1st connection part 31 which has
the axial part 33 to hangers 30R and 30L by integral molding.
[0024]
On the other hand, the second connecting portions 32 (see FIG. 1) of the hangers 30R and 30L
rotatably support the housing blocks 40R and 40L.
The second connection portion 32 is configured to turn the housing blocks 40R and 40L in the
axial direction orthogonal to the axial direction of the shaft portion 33 in the first connection
portion 31. The second connecting portion 32 has a bifurcated portion 34 provided extending in
a bifurcated manner from the vicinity of the first connecting portion 31 and a shaft portion 35
provided at the tip of each of the bifurcated portions 34.
[0025]
The shaft portion 35 is provided so as to project from the surface of the forked portion 34 facing
the housing 42 of the housing blocks 40R and 40L. The shaft portion 35 of each of the left and
right hangers 30R, 30L is disposed to align on a straight line passing through the center of the
housing 42, and functions as a substantially integral shaft. The shaft portion 35 of each of the
left and right hangers 30R, 30L is inserted into a bearing hole (not shown) provided in the
housing 42 and held.
[0026]
[Configuration of Housing Blocks 40R, 40L] Next, the configuration of the housing blocks 40R,
40L will be described. The housing blocks 40R and 40L each include a baffle 41, a housing 42,
an ear pad 43, a headphone unit 44, a wiring board 45, and the like.
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[0027]
The baffle 41 is a substantially disk-shaped base for fixing the housing 42, the ear pad 43, and
the headphone unit 44. The housing 42 is a substantially cylindrical box for covering the
headphone unit 44. The ear pad 43 is a substantially doughnut-shaped component having a
cushioning property for covering the user's ear. The shapes of the baffle 41, the housing 42, and
the ear pad 43 are not limited to those described above.
[0028]
The headphone unit 44 includes a diaphragm and a magnetic circuit (for example, a magnet and
a voice coil) for converting an electrical signal into air vibration (sound).
[0029]
The wiring substrate 45 is a substrate on which a processor, a memory, and other integrated
circuits necessary for realizing the function of the audio reproducing device and other electronic
components are mounted.
[0030]
For example, the housing 42 is provided with a slide switch 46 which is a part of the user
operation unit 114 (see FIG. 8) and other switches such as a push switch and a jog dial.
[0031]
[Configuration of Speaker Unit] Next, the configuration of the speaker unit 24 will be described.
The headphone type acoustic device 100 according to the present embodiment is provided with
a speaker unit 24 in addition to the headphone unit 44 in the housing blocks 40R and 40L as a
device for outputting sound.
[0032]
The speaker units 24 are respectively disposed in the left and right slider blocks 20R and 20L.
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The speaker unit 24 is provided on a predetermined side of the slider blocks 20R and 20L, that
is, on one side facing outward when the headphone type acoustic device 100 is mounted on the
head or neck of the user.
[0033]
3 is a longitudinal sectional view showing the configuration of the speaker unit 24, FIG. 4 is a
transverse sectional view of the speaker unit 24, and FIG. 5 is an exploded perspective view
showing a part of the configuration of slider blocks 20R and 20L including the speaker unit 24. .
[0034]
The speaker unit 24 includes a diaphragm for converting an electric signal into air vibration
(sound), a magnetic circuit (for example, a magnet and a voice coil) for driving the diaphragm,
and cases 242 and 243 for containing these. A speaker driver unit 241 configured, and a speaker
cover 244 and a speaker grill 245 that constitute a lid of the speaker driver unit 241 are
provided.
[0035]
The cases 242 and 243 are composed of an upper case 242 and a lower case 243.
The upper case 242 is provided with a diaphragm holding opening 246 for holding the periphery
of the diaphragm in a state where the diaphragm (249 in FIG. 5) is exposed.
The cases 242 and 243 are fixed to the cushion member 28 fixed to the slider base 21 of the
slider blocks 20R and 20L via connection parts such as screws.
[0036]
The speaker cover 244 is mounted on the speaker driver unit 241 so as to form a space between
the diaphragm of the speaker driver unit 241 and the surface of the upper case 242.
[0037]
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The speaker grille 245 is a decorative cover component that further covers the outside of the
speaker cover 244.
[0038]
As shown in FIGS. 3 and 4, a space S is formed between the diaphragm of the speaker driver unit
241 and the surface of the upper case 242 and the speaker cover 244.
In order to radiate sound pressure with predetermined directivity from the inside of the space S,
a sound release port 247 for letting sound leak from the above space is provided on one side
surface of the speaker cover 244.
Furthermore, the speaker grill 245 covering the outside of the speaker cover 244 is provided
with a slit opening 248 corresponding to the sound relief port 247 of the speaker cover 244
described above.
That is, the sound pressure output from the speaker driver unit 241 is released to the outside
from the space S through the sound relief port 247 provided on one side surface of the speaker
cover 244 and the slit opening 248 of the speaker grille 245. . That is, in the lid generically
including the speaker cover 244 and the speaker grille 245, a region in which the sound relief
port 247 and the opening of the slit opening 248 overlap with each other substantially escapes
the sound from inside the space S. It is provided as a department.
[0039]
Also, the speaker cover is configured such that the sound radiated from the diaphragm of the
speaker driver unit 241 is smoothly guided toward the sound relief port 247 provided on one
side of the speaker cover 244 and emitted to the outside through these. 244 and upper case 242
are configured as follows.
[0040]
1.
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The back surface of the speaker cover 244 (the surface facing the front surface of the diaphragm
and the upper case 242) is mostly occupied by a flat surface. 2. The height position of the
space S and the height position of the sound relief port 247 were made to be substantially the
same. 3. The space S was stopped at a position along the half circumference opposite to the
side of the sound relief port 247 of the speaker driver unit 241. That is, when viewed from the
vibration direction of the diaphragm, the space S communicates with the space portion S1
corresponding to the outer shape of the diaphragm and the space portion communicating the
space portion S1 from the space portion S1 to the sound relief port 247 of the speaker cover 244
And S2.
[0041]
In order to make the space S a dense structure except for the sound release port 247, portions
where the front surface of the upper case 242 and the back surface of the speaker cover 244
butt against each other are in pressure contact with each other across the cushion sheet 250.
The cushion sheet 250 is for suppressing the transmission of the vibration of the upper case 242
accompanying the vibration of the diaphragm to the speaker cover 244.
[0042]
The one side surface of the speaker cover 244 provided with the sound release port 247 is a
surface facing the front in a state where the user wears the headphone type acoustic device 100.
In other words, the sound relief port 247 is provided at one end of the space S which is in the
direction orthogonal to the slide direction of the slider blocks 20R and 20L. The reason is as
follows.
[0043]
There are mainly two types of modes of wearing the headphone type acoustic device 100 of the
present embodiment. One of them is, as shown in FIG. 6, a form of wearing when using a general
headphone. That is, the left and right housing blocks 40R and 40L are mounted to be applied to
the user's left and right ears. This is called a "head mounting form".
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[0044]
The other is, for example, as shown in FIG. 7, the head band 10 and the portions of the left and
right slider blocks 20R and 20L are mounted on the neck of the user. This is referred to as the
"head form". In this necking configuration, the sound escape ports 247 of the left and right
speaker units 24, 24 are located approximately directly below the user's left and right ears. At
this time, the sound release port 247 faces the upper front. Thus, the sounds from the left and
right speaker units 24 efficiently reach the user's left and right ears.
[0045]
Further, as shown in FIG. 3, the lower case 243 of the speaker unit 24 is fixed to and supported
by the slider base 21 with a screw or the like via the cushion member 28. This suppresses the
transmission of the vibration of the speaker unit 24 to the slider bases 21 of the slider blocks
20R and 20L.
[0046]
[Electrical Configuration of Headphone-Type Sound Device 100] FIG. 8 is a diagram showing the
electrical configuration of the headphone-type sound device 100 of the present embodiment. As
shown in the figure, the headphone type acoustic device 100 includes a processor 110, a
memory 112, a user operation unit 114, a flash memory 116, a headphone amplifier 118,
speaker amplifiers 119, headphone units 44 and 44, speaker units 24 and 24, external An input
terminal 120, a switching circuit 122, a battery 124 and the like are provided.
[0047]
The processor 110 (processor) is a control circuit that performs overall control of the
headphone-type acoustic device 100 of the present embodiment, necessary arithmetic
processing, and signal processing, and is configured of, for example, a BGA (Ball Grid Array) or
the like.
[0048]
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The memory 112 stores programs to be executed by the processor 110 and the like, and is used
as a work area of the processor 110 and the like.
The memory 112 is configured of, for example, an SDRAM (Synchronous Dynamic Random
Access Memory).
[0049]
The user operation unit 114 is, for example, a device such as a jog dial, a slide switch, or a push
button that receives an input by an operation from the user. The switches of the user operation
unit 114 include an on / off switch of a main power supply, a volume switch, an output
changeover switch, and the like. The output changeover switch is a switch for selectively
switching between the headphone output and the speaker output.
[0050]
The processor 110 detects the state of the output changeover switch, and recognizes from this
result that either the headphone output or the speaker output is selected by the user. The
processor 110 drives the headphone units 44 44 by activating the headphone amplifier 118
when it recognizes that the headphone output is selected by the user. When the processor 110
recognizes that the speaker output is selected by the user, the processor 110 drives the speaker
units 24 by activating the speaker amplifier 119.
[0051]
The flash memory 116 is a non-volatile storage device capable of rewriting and erasing that
stores, for example, an audio file as user data.
[0052]
The headphone amplifier 118 (first amplifier) amplifies the audio signal output from the
processor 110 and supplies the amplified audio signal to the headphone units 44 and 44.
[0053]
The speaker amplifier 119 (second amplifier) amplifies the audio signal output from the
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processor 110 and supplies it to the speaker units 24.
[0054]
The external input terminal 120 is, for example, a connection portion with an external device
such as a smartphone or a portable audio device.
[0055]
The switching circuit 122 switches the input source of the headphone units 44, 44 between the
headphone amplifier 118 and the external device based on the connection state of the external
device to the external input terminal 120.
That is, when an external device is not connected to the external input terminal 120, the input
source of the headphone units 44, 44 is the headphone amplifier 118, and when the external
device is connected to the external input terminal 120, the headphone unit 44, 44. Switch the
input source of to an external device.
[0056]
The battery 124 stores and supplies power for operation of the headphone type acoustic device
100.
The battery 124 is, for example, a chargeable battery such as a lithium battery.
[0057]
In addition, although not shown, the headphone-type acoustic device 100 has a display such as
an LED (Light Emitting Diode) for displaying various statuses, and a general-purpose interface
such as USB (Universal Serial Bus).
[0058]
[Operation of Headphone-Type Sound Device 100] When the headphone output is selected by
the user operating the user operation unit 114 (output changeover switch), the processor 110
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recognizes the selected contents and activates the headphone amplifier 118.
[0059]
When the user instructs to reproduce the music through the user operation unit 114, the
processor 110 reads, for example, an audio file of the music from the flash memory 116,
decodes, demodulates, converts to an analog signal, and the analog audio The signal is supplied
to a headphone amplifier 118.
The audio signal amplified by the headphone amplifier 118 is supplied to the headphone units
44, 44, and the headphone units 44, 44 are driven.
As a result, the user can enjoy music appreciation by headphone output in a head-mounted mode.
[0060]
Further, when the speaker output is selected by the user's operation of the user operation unit
114 (output changeover switch), the processor 110 recognizes the selected content and puts the
speaker amplifier 119 in an active state.
The processor 110 supplies an audio signal generated from the audio file to the speaker
amplifier 119.
The audio signal amplified by the speaker amplifier 119 is supplied to the speaker units 24, 24,
and the speaker units 24, 24 are driven. Thereby, the user can enjoy music appreciation by the
speaker output in the form of a neckrest.
[0061]
In addition, when the user operation unit 114 is operated by the user to switch to the speaker
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output while listening to music by headphone output, the processor 110 switches the headphone
amplifier 118 to the inactive state and activates the speaker amplifier 119. . That is, in this
headphone type acoustic device 100, it is possible to switch from listening to music by
headphone output to listening to music by speaker output at any time by the operation of the
user operation unit 114 by the user. The same applies to switching from the speaker output to
the headphone output.
[0062]
As described above, in the headphone type acoustic device 100 according to the present
embodiment, the speaker units 24, 24 are provided in the left and right slider blocks 20R, 20L in
addition to the headphone units 44, 44 respectively provided in the left and right housing blocks
40R, 40L. It is provided. When enjoying music using the speaker units 24, as shown in FIG. 7, it
is recommended to the user through a product manual or the like to use in a necked form. In this
necking state, the sound escape ports 247 of the left and right speaker units 24, 24 are located
approximately directly below the user's left and right ears and face substantially upward. That is,
the sound from the left and right speaker units 24 is emitted from the bottom toward the user's
ear. For this reason, the user can sense a sound with a sufficient volume without raising the
volume of the speaker units 24 and 24 too much.
[0063]
Further, the total length size including the headband 10 and the slider blocks 20R and 20L can
be changed manually by the user. Therefore, for example, as shown in FIG. 9, the hooking
position is changed to a position where the headband 10 is pulled out a little from the slider
blocks 20R and 20L, and vice versa. Thus, the positional relationship between the user's left and
right ears and the left and right speaker units 24 can be freely adjusted.
[0064]
In addition, when the speaker is used, the ear is not blocked as in the case of using the
headphone, so the ambient sound also enters the user's ear simultaneously with the music. For
this reason, the safety of the user on the move can be improved.
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[0065]
[Effect against Patent Document 1] 1. The user can hear the sound from the left and right
speaker units 24 with the left and right ears while the headphone type sound device 100 is put
on the neck when using the speaker. Therefore, a better stereo effect can be obtained as
compared with the case where the sounds from the left and right housing blocks are listened to
from a distance as in the case described in Patent Document 1.
[0066]
2. In the headphone type acoustic device 100 of the present embodiment, since the sound is
transmitted along the space between the speaker unit 24 and the ear, the output power of the
speaker unit provided in the housing can be reduced to a small level for the headphones and the
speaker Compared to the method of switching between large levels, it is possible to enjoy a
speaker sound without discomfort.
[0067]
The present technology can also be configured as follows. (1) A headband, a pair of slider blocks
having one end slidably attached to each end of the headband, and the other end of each of the
pair of slider blocks are connected to each other through a connecting portion; A headphone type
acoustic device comprising: a pair of housing blocks respectively provided with the speaker units;
and a speaker unit respectively disposed on the pair of slider blocks.
[0068]
(2) The headphone-type acoustic device according to (1), wherein a first amplifier capable of
amplifying an audio signal supplied to the headphone unit, and a second amplifier capable of
amplifying an audio signal supplied to the speaker unit A headphone type sound further
comprising: an operation unit for receiving a switching instruction from the user; and a control
unit for switching between the first amplifier and the second amplifier according to the
instruction received by the operation unit. apparatus.
[0069]
(3) The headphone type acoustic device according to (1) or (2), wherein the speaker unit is a
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diaphragm capable of vibrating in the thickness direction of the slider block, and a magnetic
circuit for driving the diaphragm. A space is formed between a speaker driver unit including a
case for holding and containing the diaphragm and the magnetic circuit while the diaphragm is
exposed, and a surface of the case where the diaphragm is exposed. And a lid having an opening
for letting sound escape from one end of the space in a direction orthogonal to the sliding
direction of the slider block.
[0070]
10 ... head band 20R. 20L ... slider block 21 ... slider base 22 ... slider cover 24 ... speaker unit 24,
24 ... speaker unit 30R. 30L ... hanger 31 ... first connection portion 32 ... second connection
portion 33 ... shaft portion 34 ... bifurcated portion 35 ... shaft portion 40R. 40L ... housing block
41 ... baffle 42 ... housing 43 ... ear pad 44, 44 ... headphone unit 100 ... headphone type acoustic
device 110 ... processor 112 ... memory 114 ... user operation unit 116 ... flash memory 118 ...
headphone amplifier 119 ... speaker amplifier 241 ... Speaker driver unit 242 Upper case 243
Lower case 244 Loudspeaker cover 245 Loudspeaker grill 247 Sound relief port 248 Slit
opening
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