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JP2006074121

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2006074121
PROBLEM TO BE SOLVED: To reproduce a sound reproduced by vibration well while keeping the
amplitude of the vibration small when reproducing a sound by vibrating a counter or the like.
SOLUTION: A kitchen 10 is configured by including a cabinet main body 11 disposed on an
installation surface F and having a storage space S1 therein, and a counter 14 provided on the
upper part of the cabinet main body 11. In the storage space S1, a first speaker 33 capable of
reproducing medium sound and a second speaker 34 capable of reproducing low frequency
sound are provided. An actuator 35 is attached to the back of the counter 14. The actuator 35
vibrates the counter 14 so as to reproduce only high sound. [Selected figure] Figure 3
Acoustic structure and work table
[0001]
The present invention relates to an acoustic structure and a workbench, and more particularly, to
an acoustic structure and a workbench for reproducing sound from a plate-like body forming an
outer surface side and a top wall.
[0002]
DESCRIPTION OF RELATED ART Conventionally, as disclosed by patent document 1, the
structure which attaches an actuator to the sink etc. of a kitchen, and exhibits an acoustic effect
is known.
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According to such a structure, the sink vibrated by the actuator serves as a sound generator, and
can reproduce the sound.
[0003]
JP 2002-209287 A
[0004]
However, in the structure of Patent Document 1, when the medium sound or the bass sound is
reproduced, the amplitude of the vibration in the sink becomes large.
As a result, during reproduction of medium or low tones, the user who touched the sink may feel
uncomfortable, or the tableware may vibrate on the sink, which may result in inconveniences
such as impaired handleability and workability of the sink. . In addition, since the sink is vibrated
as a whole, the power required to reproduce medium and bass sounds with large amplitudes is
increased. For this reason, as the mass of the sink or the like to be vibrated increases, an
amplifier with a large output is required, which not only increases the cost burden on the
equipment but also causes a disadvantage that the sound quality to be reproduced is degraded.
[0005]
[Object of the Invention] The present invention has been made by paying attention to such
inconveniences, and the object thereof is to keep the amplitude of the vibration of the plate-like
body and the top wall portion small while using the vibration. An object of the present invention
is to provide an acoustic structure and a work table which can properly hear reproduced sounds.
[0006]
In order to achieve the above object, the acoustic structure of the present invention includes a
plate-like body forming a wall surface of a building or furniture, and an actuator mounted in the
plane of the plate-like body, the actuator is a plate-like body Is configured to be able to reproduce
only the high-pitched sound.
[0007]
Further, the work bench of the present invention includes a peripheral wall portion disposed on a
predetermined installation surface, a top wall portion provided on an upper portion of the
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peripheral wall portion, and an actuator attached to the back surface of the top wall portion. A
configuration is adopted in which the actuator is provided so as to be able to reproduce only the
high sound by vibrating the top wall.
[0008]
In the work bench according to the present invention, a speaker device capable of reproducing
medium sound and low sound is provided in a space surrounded by the peripheral wall portion
and the top wall portion, and the speaker device is disposed below the actuator. A configuration
may be employed in which the peripheral wall portion and the top wall portion are provided in a
position substantially concealed.
[0009]
Further, in the present invention, it is preferable that the peripheral wall portion be provided
with a plurality of passages, and these passages allow the reproduced sound from the speaker
device to pass substantially radially in plan view.
[0010]
Further, an intermediate wall positioned substantially parallel to the installation surface is
provided inside the peripheral wall, and the sound passing through the passage is the installation
surface, the top wall, and the intermediate wall from the reproduction sound from the speaker
device. It is possible to adopt a configuration in which an indirect sound is reflected in at least
one of the parts.
[0011]
Furthermore, a configuration in which the passage is provided below the peripheral wall portion
is also preferably employed.
[0012]
Further, the peripheral wall portion may include a frame-like kicked portion disposed on the
installation surface, and the reproduced sound from the speaker device may flow from the inside
toward the outside of the kicked portion.
[0013]
Furthermore, it is preferable that a duct be provided inside the peripheral wall portion, and the
reproduction sound from the speaker device be made to flow through the duct.
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[0014]
Further, the speaker device may be arranged forward or backward, and the reproduced sound
may be flowed back and forth through the sound pressure adjusting means.
[0015]
Furthermore, the speaker device may be attached to the intermediate wall via a shock absorbing
material.
[0016]
Further, in the surface of the peripheral wall portion, a reinforcing member can be provided to
suppress resonance due to the reproduction sound.
[0017]
According to the present invention, since only the high-pitched sound is reproduced by vibrating
the plate-like body, the amplitude of the vibration can be made relatively small.
As a result, it is possible to prevent discomfort for the person touching the plate-like body, and it
is also possible to suppress the power consumption required for vibration and to use an amplifier
with a small output that is advantageous in cost.
Here, high-pitched sound is a band in which human's sense of hearing is most sensitive, so that
the ease of listening to the reproduced sound is well maintained.
[0018]
In addition, in the case where only the high-pitched sound is reproduced by vibrating the top wall
portion of the work bench, the same effect as described above can be obtained, and further,
suppressing oscillation and rattling of the object placed on the top wall portion. As in the case of
the conventional sink, it is possible to avoid the loss of workability.
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Moreover, since the high-pitched sound is reproduced from the top wall portion closer to the
user's ear, the sound image can be localized near the ear, and the reproduced sound can be made
easy to hear.
[0019]
Furthermore, since the speaker device is substantially concealed, it is possible to prevent the
attachment of dirt and the like to the speaker device, and in particular, when the work bench is a
kitchen, it may be contaminated by water or oil due to cooking work or the like. It becomes
possible to prevent.
In addition, since the speaker device is disposed in the space surrounded by the peripheral wall
portion and the top wall portion, the speaker device can be easily and quickly installed on the
manufacturing line of the work table etc., and the work at the construction site etc. can be
reduced. It becomes possible.
Further, since the tone range is divided and reproduced by the top wall portion and the speaker
device, the sound quality of these reproduced sounds can be maintained better.
[0020]
In addition, since the passage of the peripheral wall portion passes the reproduced sound from
the speaker device substantially radially, it is possible to achieve uniform sound quality around
the peripheral wall portion.
Therefore, a comfortable omnidirectional sound field is created to surround the workbench, and
when the workbench is surrounded by multiple users, it is possible to give each user the same
acoustic effect.
[0021]
Furthermore, since the sound passing through the passage is an indirect sound reflected on the
installation surface or the top wall, for example, the reproduced sound from one sound source of
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the speaker device can be passed through a plurality of passages, so that the sound effect is
improved. The number of installed sound sources can be reduced while maintaining.
[0022]
In addition, by making the reproduced sound from the speaker device flow from the lower side of
the peripheral wall portion or from the kick portion, it becomes easy to come out along the
installation surface where the bass is a long surface, and it is possible to sufficiently obtain the
bass sound effect. Become.
[0023]
Furthermore, in the case where the reproduced sound from the speaker device is made to flow
through the duct, it is possible to suppress the decrease in the sound pressure of the reproduced
sound depending on the distance from the speaker device, thereby improving the degree of
freedom in the layout of the speaker device in the peripheral wall portion. be able to.
In addition, by adjusting the length and opening area of the duct, it is possible to control the
frequency of the sound to be flown to the outside.
[0024]
In addition, when playing back the sound through the sound pressure adjusting means, the sound
pressure in the front and the rear should be adjusted to be substantially the same even if the
speaker device is moved forward or backward in the peripheral wall portion. Can.
Accordingly, when the space in the peripheral wall portion is used as the storage space, the
speaker device is less likely to be in the way, and the storage space can be easily used.
[0025]
Furthermore, by attaching the speaker device through a shock absorbing material or providing a
reinforcing member in the surface of the peripheral wall portion, resonance of the intermediate
wall portion and the peripheral wall portion due to reproduced sound from the speaker device is
suppressed, and unpleasant noise is generated. It is possible to prevent
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[0026]
In the present specification and claims, the term "workbench" means a concept including a
kitchen, a storage cabinet, a table, a work table, a wash basin and the like.
Also, terms such as front , rear , upper , lower , left , right and the like
indicating the position or direction are viewed in the direction of arrow A in FIG. 1 unless
otherwise specified. Based on
Furthermore, high note means 1 kHz or more, bass means 150 Hz or less, and
medium tone means a frequency between the high tone and the low tone.
[0027]
Hereinafter, preferred embodiments of the present invention will be described with reference to
the drawings.
[0028]
First Embodiment FIG. 1 shows a schematic perspective view of a kitchen according to a first
embodiment.
In this figure, a kitchen 10 as a workbench is disposed at a central part of a kitchen room or at a
boundary between a kitchen room and a dining room in a general house or the like.
The kitchen 10 is disposed on the installation surface F, has a cabinet body 11 provided with a
storage space S1 inside, is provided on the upper portion of the cabinet body 11, and has a
faucet device (not shown) and a sink 13 It is configured to include a counter 14 as a top wall
portion formed in a substantially rectangular shape which is horizontally long in plan view.
[0029]
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The cabinet body 11 is configured to include three cabinets aligned in the left-right direction,
that is, first to third cabinets 16 to 18 positioned from the left to the right.
[0030]
As shown in FIGS. 2 and 3, the first cabinet 16 has a pair of left and right side plates 20, 21 and a
pair of doors 22, 22 provided on the front and rear sides of the side plates 20, 21, respectively.
Connecting the front plate 24 connecting the front of the side plates 20 and 21 and the rear
plate 25 connecting the rear and the lower portion of the front plate 24 and the rear plate 25 on
the upper side of the doors 22 and 22 A partition plate 26 as an intermediate wall portion
positioned substantially parallel to the installation surface F, and a bottom plate 27 as an
intermediate wall portion coupled between the lower portions of the side walls 20 and 21 and
positioned substantially parallel to the installation surface F; It arrange ¦ positions on the
installation surface F, and it comprises with the kicking part 29 which makes frame shape (refer
FIG. 4) of planar view substantially rectangular shape.
The storage space S1 in the first cabinet 16 is surrounded by the counter 14, the side plates 20
and 21, the door 22, the front plate 24 and the rear plate 25 and is substantially concealed from
the user of the counter 14.
A horizontally long concave upper passage 30 is provided at the upper end portion of the left
side plate 20, the front plate 24 and the rear plate 25, respectively, and from the outside of the
first cabinet 16 and the partition plate 26 via the upper passage 30. It communicates with the
upper storage space S1.
Further, a plurality of lower passages 31 having a substantially circular shape are respectively
provided on the front and rear surfaces and the left surface of the kicking portion 29, and a
space surrounded by the lower portion 31, the kicking portion 29, the bottom plate 27 and the
installation surface F S2 communicates with the outside of the riser 29.
Here, in the storage space S1, first and second speakers 33 and 34 which constitute a speaker
device and have different reproduction sound ranges are provided.
[0031]
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The first speaker 33 is made of a tweeter or squawker that is smaller than the second speaker 34
and capable of reproducing medium sound.
The first speaker 33 is attached to an in-plane central portion of the lower surface of the
partition plate 26 and reproduces a medium sound toward the lower surface of the counter 14
through the opening 26A formed in the partition plate 26.
[0032]
The second speaker 34 is attached to the upper surface side in the in-plane central portion of the
bottom plate 27, whereby the first speaker 33 is positioned above the second speaker 34. The
second speaker 34 is provided so as to be able to reproduce bass and is adapted to reproduce
toward the lower installation surface F through the opening 27A of the bottom 27.
[0033]
The second cabinet 17 is substantially the same as the first cabinet 16 except that the installation
of the speakers 33 and 34 is omitted and the upper passage 30 and the lower passage 31 are not
formed. In addition, the third cabinet 18 adopts a structure that is symmetrical with respect to
the first cabinet 16. Therefore, in the second and third cabinets 17 and 18, the same reference
numerals are used for the same or equivalent components as the first cabinet 16, and the
description will be omitted. Here, the side wall 20 exposed to the outside of the first to third
cabinets 16 to 18, the door 22, the front plate 24, the rear plate 25, and the kicking portion 29
constitute a peripheral wall portion.
[0034]
In the present embodiment, the height position of the counter 14 is set to be near the waist of
the user who has stood up, and the upper surface of the counter 14 can be used as a work
surface or a work area. Here, actuators 35 and 35 are attached to the lower surface (back
surface) of the counter 14 and above the first speakers 33 and 33, respectively. Each of the
actuators 35, 35 vibrates the counter 14 to act as a vibrator, and only the high-pitched sound can
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be reproduced by the vibration.
[0035]
Here, the first and second speakers 33 and 34 and the actuator 35 are connected to audio
equipment including various tuners, players, amplifiers and the like via connection cords (not
shown). The audio device may be stored in the storage space S1, or may be installed in a place
different from the kitchen 10, for example, in a dining room or a living room. Further, the
operation of the audio device can be exemplified via a control panel connected to the audio
device and attached to a predetermined wall surface or the like, a remote controller of a wireless
type, or the like.
[0036]
In the above-described configuration, when the sound device outputs the first and second
speakers 33 and 34 and the actuator 35, bass, mid-tone and high-pitched tones are
simultaneously reproduced. Specifically, the actuator 35 vibrates the counter 14 to reproduce a
high sound, and the high sound is radiated upward from the entire counter 14. The medium
sound reproduced from the first speaker 33 is reflected on the lower surface of the counter 14
and the upper surface of the partition plate 26, and flows to the outside of the cabinet body 11
through the upper passages 30 as indirect sound. The low-pitched sound reproduced from the
second speaker 34 is reflected on the installation surface F and the lower surface of the bottom
plate 27 and flows from the space S2 to the outside of the riser 29 through the lower passages
31 as indirect sound.
[0037]
Here, as shown in FIGS. 2 and 4, the upper passage 30 and the lower passage 31 are formed on
both sides in the front-rear direction (vertical direction in the drawing) of the cabinet body 11
and on both sides in the horizontal direction. The reproduced sound from the speakers 33 and
34 flows to the outside of the cabinet body 11 substantially radially in plan view (the direction of
the broken arrow in FIGS. 2 and 4) by passing through the upper passage 30 and the lower
passage 31. Become.
[0038]
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Therefore, according to the first embodiment as described above, since the sound reproduced
from the counter 14 is only the high-pitched sound, it is possible to suppress the increase in the
amplitude of the vibration of the counter 14.
Thereby, it is possible to prevent the user who performs the work such as cooking at the counter
14 from feeling uncomfortable, and also to prevent them from rattling even if the dishes, cooking
utensils and the like on the counter 14 are placed. It can be maintained well. Further, compared
to the case where the entire audible range is reproduced by the counter 14, not only the sound
quality can be improved, but also the power consumption can be reduced. In addition, since highpitched sound is a band to which human hearing is sensitive, a sufficient acoustic effect can be
obtained with small power, which also makes it possible to reduce power consumption.
[0039]
Further, since the high-pitched sound is reproduced from the counter 14, the sound image can be
stably localized at a position closer to the user's ear. Moreover, while the middle sound passes
from the upper passage 30 substantially radially, while the low sound passes through the lower
passage 31 through the space S2 in the kicking portion 29, the middle low sound is made along
the installation surface F and the sound of the middle low sound The pressure can be increased.
From these facts, an omnidirectional sound field is created around the kitchen 10. For example,
when a plurality of users perform the cooking operation around the kitchen 10, the acoustic
effect is uniform regardless of the position of each user It is possible to make a good atmosphere.
[0040]
Further, since the speakers 33 and 34 are disposed in the storage space S1 and substantially
concealed, it is possible to prevent the speakers 33 and 34 from being soiled by oil and the like
at the time of cooking operation. Furthermore, since the reproduced sound from each of the
speakers 33 and 34 flows substantially radially through the partition plate 26 and the
installation surface F, the number of the speakers 33 and 34 can be reduced, and the wiring
operation can be simplified. It becomes possible.
[0041]
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Next, embodiments other than the first embodiment of the present invention will be described. In
the following description, the same reference numerals will be used as necessary for constituent
parts identical or equivalent to those in the first embodiment, and the explanation will be omitted
or simplified.
[0042]
Second Embodiment FIGS. 6 and 7 show a kitchen 10 according to a second embodiment of the
present invention. The second embodiment is different from the first embodiment in that the
second speaker 34, the opening 27A and the lower passage 31 are omitted, and not only medium
sound but also bass can be reproduced from the first speaker 33. is there. According to this, in
addition to the simplification of the structure of the kicking portion 29 and the like, it is possible
to secure a wide area where the stored items can be placed on the bottom plate 27.
[0043]
Third Embodiment FIG. 8 shows a kitchen 10 according to a third embodiment of the present
invention. In the third embodiment, in contrast to the first embodiment, the first speaker 33, the
opening 26A and the upper passage 30 are omitted, and not only bass but also medium sound
can be reproduced from the second speaker 34. is there.
[0044]
Fourth Embodiment FIGS. 9 and 10 show a kitchen 10 according to a fourth embodiment of the
present invention. In the fourth embodiment, reproduced sound is made to flow from the second
speaker 34 through the duct 37. In the fourth embodiment, two second speakers 34 are
arranged side by side on the bottom plate 27 of the first cabinet 16. The duct 37 extending from
the second speaker 34 at the front or lower side in FIG. 10 is connected to the intermediate plate
38 which divides the space S2 of the first cabinet 16 into right and left, and through the opening
38A of the intermediate plate 38 and the lower passage 31 A bass is swept into the lower area of
the first cabinet 16. Also, the duct 37 extending from the second speaker 34 at the rear, that is,
in the upper part of FIG. 10, is connected to the intermediate plate 39 in the space S2 of the third
cabinet 18 through the opening 39A of the intermediate plate 39 and the lower passage 31. A
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bass is swept into the lower area of the third cabinet 16.
[0045]
Therefore, according to such a fourth embodiment, the respective second speakers 34 can be
concentrated on only the first cabinet 16. As a result, the usability of the storage space S1 of the
third cabinet 18 can be improved, and the wiring work of the second speaker 34 can be
performed only by the first cabinet 16, and the work can be facilitated. It becomes. Further, by
changing the length and the opening area of each duct 37, the frequency of the sound to be
flown can be adjusted.
[0046]
Fifth Embodiment FIGS. 11 and 12 show a kitchen 10 according to a fifth embodiment of the
present invention. In the fifth embodiment, the second speaker 34 in the first cabinet 16 is
disposed forward and the second speaker 34 in the third cabinet 18 is disposed rearward. A
diffuser 41 is disposed below the second speaker 34 in the first cabinet 16. The diffuser 41
includes a substantially circular reflective surface portion 41A, and the reflective surface portion
41A is inclined in a rearward (left in FIG. 12) direction as it goes downward. Further, the lower
passage 31 in the first cabinet 16 has a larger number of back surfaces than the front surface of
the riser 29. Thus, the sound pressure of the reproduced sound from the second speaker 34 can
be adjusted with good balance in the front-rear direction by changing the formation number of
the lower passages 31 before and after the riser plate 29 or providing the diffuser 41. These
constitute sound pressure adjusting means. The third cabinet 18 is provided with a diffuser 41 so
as to have a positional relationship in which the front and rear direction is changed relative to
the first cabinet 16, and the number of lower passages 31 formed before and after the riser plate
29 is set. By changing it, the balance of the sound pressure of the second speaker 34 is
maintained.
[0047]
Therefore, according to the fifth embodiment, the second speakers 34 do not overlap the virtual
line L (shown by the alternate long and short dash line in FIG. 11) passing through the center of
the cabinet body 11 in the front-rear direction. Even if disposed, it is possible to achieve uniform
sound pressure before and after the cabinet body 11.
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[0048]
Although the best configuration, method and the like for practicing the present invention are
disclosed in the above description, the present invention is not limited thereto.
That is, although the present invention has been particularly illustrated and described with
respect to particular embodiments, it is to be understood that the present invention may be
configured relative to the above-described embodiments without departing from the scope of the
inventive concept and object. Those skilled in the art can make various modifications in position,
orientation, and other detailed configurations. Therefore, the descriptions with the abovedescribed disclosure of the shapes and the like are exemplarily described in order to facilitate the
understanding of the present invention, and are not intended to limit the present invention. The
description in the name of the member which removed the one part or all limitation is contained
in this invention.
[0049]
For example, various design changes are possible for the cabinet body 11. For example, instead
of the door 22, a plurality of drawers may be provided, or the lower sides of the cabinets 16 to
18 including the risers 29 may be drawers. Furthermore, the planar shape of the cabinet body 11
and the counter 14 may be a substantially circular shape, a substantially elliptical shape, a
substantially polygonal shape or the like, or a shape that bulges or dents partially outward with
respect to a substantially square shape. . Further, the upper passage 30 and the lower passage 31
may be provided with an appropriate cover capable of passing the reproduced sound.
[0050]
Furthermore, although the three cabinets 16 to 18 are arranged side by side to constitute the
cabinet main body 11, the number of installed cabinets may be increased or decreased, or the
cabinet may be arranged side by side and left or right to constitute the cabinet main body 11. In
this case, as shown in FIG. 13, the relative surface portions 44 of the cabinets 43 and 43
arranged in front and back may be formed in a thin plate shape, and a plurality of reinforcing
members 45 extending in the lateral direction may be attached to the relative surface portions
44. . The reinforcing member 45 suppresses the resonance of the relative surface portion 44 due
to the reproduction sound of the speakers 33 and 34, thereby preventing the generation of an
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unpleasant sound. As shown in FIG. 14, two reinforcing members 45 may be arranged to cross
each other.
[0051]
Furthermore, as shown in FIG. 15, the second speaker 34 is attached to the bottom plate 27 via
the attachment member 47 having a crank shape in cross section, and the flange portion 34A of
the second speaker 34, the attachment member 47 and the bottom plate 27. A shock-absorbing
material 48 made of an elastic member such as rubber may be provided between them.
According to this, the anti-vibration effect of the bottom plate 27 can be obtained, and generation
of an unintended sound can be avoided.
[0052]
In the fourth and fifth embodiments, sound pressure adjusting means including the duct 37 and
the diffuser 41 is provided to the second speaker 34. However, these are similarly provided to
the first speaker 33. It is also good. Furthermore, in the fifth embodiment, the number of lower
passages 31 formed is changed before and after the riser 29. However, the sound pressure may
be adjusted by changing the opening area of the lower passages 31 before and after.
[0053]
In each of the above embodiments, the first and second speakers 33 and 34 may be omitted, but
it is possible to reproduce medium and bass sounds if the first and second speakers 33 and 34
are provided. It is advantageous.
[0054]
Furthermore, the kitchen 10 may be disposed adjacent to a wall surface or an inner corner
surface of a room.
In this case, it is preferable that the reproduced sound from each of the speakers 33 and 34 flow
toward a position where the user can work.
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[0055]
Furthermore, the present invention is not limited to the kitchen 10, and can be applied to various
work platforms capable of performing predetermined work in the upper area such as a table or a
wash basin. The actuator 35 can also be mounted in the plane of a plate-like body forming a wall
surface of a building or furniture to reproduce high-pitched sound. Specific examples of the
attachment position of the actuator 35 include a ceiling forming an indoor space, a partition, a
door, and a storage cabinet disposed in an office or a general house.
[0056]
BRIEF DESCRIPTION OF THE DRAWINGS The schematic perspective view of the kitchen which
concerns on 1st Embodiment. FIG. 2 is a plan view of FIG. 1; Sectional drawing in alignment with
the BB line of FIG. FIG. 4 is a cross-sectional view taken along the line CC of FIG. 3; Sectional
drawing in alignment with the DD line of FIG. Sectional drawing similar to FIG. 3 of the kitchen
which concerns on 2nd Embodiment. Sectional drawing which follows the EE line of FIG.
Sectional drawing similar to FIG. 3 of the kitchen which concerns on 3rd Embodiment. Sectional
drawing similar to FIG. 3 of the kitchen which concerns on 4th Embodiment. Sectional drawing
similar to FIG. 4 of the kitchen which concerns on 4th Embodiment. Sectional drawing similar to
FIG. 4 of the kitchen which concerns on 5th Embodiment. FIG. 12 is a cross-sectional view taken
along the line F-F in FIG. The partial disassembled perspective view of the kitchen which
concerns on a modification. The partial perspective view of a kitchen to another modification.
The partially expanded sectional view of another modification.
Explanation of sign
[0057]
DESCRIPTION OF SYMBOLS 10 ... Kitchen (working table), 14 ... Counter (top wall part), 20, 21 ...
Side plate (peripheral wall part), 22 ... Door (peripheral wall part), 24 ... Front plate ( Peripheral
wall portion), 25 ... rear plate (peripheral wall portion), 26 ... partition plate (intermediate wall
portion), 27 ... bottom plate (intermediate wall portion), 29 ... riser portion, 30 ... Upper passage,
31 ... lower passage, 33 ... first speaker (speaker device), 34 ... second speaker (speaker device),
35 ... actuator, 37 ... duct, 41 · · · · · Diffuser, 45 · · · Reinforcement member, 47 · · · Buffering
material, F · · · Installation surface, S1 · · · Storage space, S2 · · ·
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