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JP2006166281

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DESCRIPTION JP2006166281
PROBLEM TO BE SOLVED: To obtain a powerful presence without dissipating noise to the
surroundings. SOLUTION: In a seat 3 on which a listener M sits, a transmission surface 53a in
contact with the back M1 of the seated listener, a transmission surface 52a in contact with the
back M2, a transmission surface 51a in contact with the lower back M3 and a transmission
surface in contact with the leg back M4. 54a is formed, and the speakers 41A, 41B, 42A, 42B,
43A, 43B, 44A, 44B are embedded in the inside. The sheet 3 is divided into each of the
transmission surfaces 51a to 54a, and the sheet dividing portions 51, 52, 53, and 54 can be
adjusted and moved in accordance with the physical size of the listener M who is seated. The
sound vibration output from each speaker is directly transmitted to the part of the body in
contact with it through the transmission surface. [Selected figure] Figure 3
Sound equipment
[0001]
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an
acoustic device, and more particularly to an acoustic device capable of providing a powerful
presence without dissipating noise to the surroundings.
[0002]
As this kind of acoustic device, for example, one shown in Patent Document 1 is known.
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This device embeds a speaker in the headrest portion of the seat, and localizes the sound image
of the sound emitted from the speaker into the air at a predetermined position in front of the
listener sitting on the seat, so that high quality without dissipating noise around It is made to be
able to obtain the voice of. JP 2003-92799
[0003]
However, even the above-described conventional audio device has a problem that it is still
insufficient to obtain a high sense of reality.
[0004]
Therefore, the present invention is intended to solve such a problem, and an object of the present
invention is to provide an acoustic device capable of obtaining a powerful presence without
dissipating noise to the surroundings.
[0005]
In order to achieve the above object, according to the first aspect of the present invention, the
first aspect of the present invention is directed to the first inward of the transmission surface
(51a, 52a, 53a, 54a) with which a part (M1, M2, M3, M4) of the listener's To embed speakers
(41A, 41B, 42A, 42B, 43A, 43B, 44A, 44B) so that the sound vibration output from the first
speaker is directly transmitted to the part of the body in contact with it through the transmission
surface The
[0006]
In the first aspect of the present invention, the sound vibration output from the first speaker is
not propagated to the air to reach the listener's ear, but directly transmitted to the listener's body
via the transmission surface in contact with a part of the listener's body. Therefore, even if the
output of the first speaker is small enough not to cause ambient noise, a powerful and highly
realistic sensation can be obtained.
[0007]
In the second aspect of the present invention, the transmission surface (53a) in contact with the
occipital region (M1) of the above-mentioned listener sitting on the seat (3) on which the listener
(M) sits, the transmission surface (52a) in contact with the back (M2), the waist At least one of a
transmission surface (51a) in contact with the back (M3) and a transmission surface (54a) in
contact with the leg back (M4) is formed, and the first speaker (41A) is disposed inward of these
transmission surfaces (51a to 54a). ˜ 44B).
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[0008]
In the second aspect of the invention, the sound vibration of the first speaker is directly
transmitted via the transmission surface to at least one of the back of the head, the back, the
lumbar back, and the leg back of the listener, and a powerful high sense of reality can be
obtained. .
[0009]
In the third aspect of the present invention, the sheet (3) is divided into the transmission surfaces
(51a to 54a), and the first speakers (41A to 44B) are provided in the inside, and these sheet
division parts (51, 52) , 53, 54) can be adjusted and moved in accordance with the physical size
of the above-mentioned listener (M) who is seated.
In the third aspect of the present invention, each sheet dividing portion can be accurately
positioned and brought into contact with at least one of the back of the head, the back, the back
of the pelvis, and the back of the leg of the seated listener. Voice vibration from one speaker can
be efficiently transmitted.
[0010]
In the fourth aspect of the present invention, the surface side of the soft cushion material (66) is
the transmission surface (53a), and a hard cushion material (67) is disposed on a part of the soft
cushion material (66). 1 Provide a speaker (41A).
In the fourth aspect of the invention, the transmission surface is in soft contact with the listener's
body by the soft cushion material, and the sound vibration from the first speaker is efficiently
transmitted to the body by the presence of the hard cushion material.
[0011]
In the fifth aspect of the present invention, a second speaker (21A, 21B, 22A, 22B, 23A, 23B) for
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propagating the air to reach the listener (M) 's ear is further provided.
In the fifth aspect of the invention, since the clear sound is input to the listener's ear by the
second speaker, it is possible to obtain a powerful presence with a delicate sound in combination
with the sound vibration input by the first speaker. it can.
[0012]
In addition, the code ¦ symbol in the said parenthesis shows correspondence with the specific
means as described in embodiment mentioned later.
[0013]
As described above, according to the acoustic device of the present invention, it is possible to
obtain a powerful presence without dissipating noise to the surroundings.
[0014]
FIG. 1 shows a home theater system equipped with the audio device of the present invention.
In the figure, an imaging device 1 is provided at the center, and speakers 21A, 21B: 22A, 22B:
23A, 23B for bass, middle and high tones are connected to the left and right speaker terminals
11, 12, respectively. It is done.
The speakers 21A to 23B are provided at the left and right positions of the image device 1
together with the device 1 toward the sheet 3 described later.
An audio amplifier 13 is provided, and signal lines from the left and right speaker terminals 11
and 12 are connected to the input terminal 13a.
The seat 3 is provided with a pair of left and right low-tone, medium-tone and high-tone speakers
41A, 41B: 42A, 42B: 43A, 43B: 44A, 44B as described below. Each of 41A to 44B is connected to
the output terminal 13b of the audio amplifier 13 by a signal line.
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[0015]
FIG. 2 shows a front view of the seat 3 and FIG. 3 shows its side view.
The seat 3 includes left and right front and rear legs 31 and a seat plate member 32 supported
by the legs 31. The seat plate member 32 is provided with an appropriate cushioning property.
Slide rods 33 are erected parallel to the left and right positions on the upper surface of the rear
end portion of the seat plate member 32. Between the slide rods 33, a rectangular waist member
51 and a back member 52 in front view from below. The headrest member 53 is horizontally
provided. The waist member 51, the back member 52, and the headrest member 53 can be
adjusted and moved up and down in an appropriate range according to the body size of the
listener (viewer) M (FIG. 3) by the ratchet mechanism. Then, in the waist member 51 whose front
surface is an inclined surface, low-pitch speakers 43A and 43B are embedded at the left and right
positions inside. The medium sound speakers 42A and 42B are embedded in the back member
52 at the left and right positions inside, and the high sound speakers 41A and 41B are embedded
in the head rest member 53 at the left and right positions inside.
[0016]
Slide bars 34 are provided upright on the lower surface of the front end portion of the seat plate
member 32 at left and right positions, and between the slide bars 34, a leg member 54 having a
rectangular shape in a front view is horizontally provided. The leg member 54 can be adjusted
and moved up and down appropriately according to the body size of the listener M by the ratchet
mechanism, and the left and right positions of the leg member 54 whose front and rear surfaces
are inclined The middle sound speakers 44A and 44B are embedded in the When the listener M
sits on such a seat 3, as shown in FIG. 3, the back M1 of the listener M is on the front surface 53a
which is the transmission surface of the headrest member 53, and the back M2 of the listener M
is on the transmission surface of the back member 52. In the front surface 52a, the lumbar back
M3 of the listener M abuts on the front surface 51a which is the transmission surface of the
waist member 51, and the leg back M4 of the viewer abuts on the front surface 54a which is the
transmission surface of the leg member 54.
[0017]
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In this state, the left and right high-pitched speakers 41A and 41B in the headrest member 53
are positioned obliquely upper near the right and left ears of the listener M, and the left and right
middle-tone speakers 42A and 42B in the back member 52 are It is located corresponding to the
right and left shoulder blades. The left and right bass speakers 43A and 43B in the waist member
51 correspond to the left and right portions of the back of the waist of the listener M, and the left
and right middle tone speakers 44A and 44B in the leg member 54 correspond to the left and
right calf of the listener M, respectively. Is located. In addition, if the slide rods 33 and 34 can be
moved and adjusted in the front-rear direction, the adaptability to the body size of the listener M
can be further improved. Moreover, the slide rod 33 can be made into the reclining structure
which can be tilted in the front-back direction.
[0018]
FIG. 4 shows the embedding structure of the high sound speaker 41A in the headrest member
53. As shown in FIG. The other high-pitched speakers 41B and the embedding structure of the
speakers 42A to 44B provided in the back member 52, the waist member 51, and the leg
members 54 are also the same. In FIG. 4, an opening 611 is provided in the waist plate 61
constituting the back surface of the headrest member 53, and the cylindrical vibration-proof
rubber body 62 is mounted in the space 611, and the speaker 41 A is mounted in the vibrationproof rubber body 62. The drive coil unit 411 is inserted and fixed. From the drive coil portion
411, a signal line 14 extends outward through a skin material 63 of cloth or leather joined to the
back surface of the waist plate 61. The cone portion 412 of the speaker 41A is located in the
opening 641 of the sound absorbing material 64 disposed on the front surface of the waist plate
61. A flat braided spring member 65 having a size to cover the opening 641 is disposed on the
front surface of the sound absorbing member 64, and a plurality of braid spring members 65 are
provided in the region corresponding to the opening of the cone portion 412. Through holes 651
are formed. In addition, the braided spring material 65 is for preventing the soft cushion material
described later from intruding into the cone portion 412 of the speaker 41A, and it is a flat flat
thin steel wire commonly used for a backrest portion of a bed or a chair. It is a spring knitted into
a shape.
[0019]
A soft cushion material 66 is provided in front of the sound absorbing material 64 with a
constant thickness so as to sandwich the braided spring material 65, and the front surface is
covered with a skin material 63. In the cushioning material 66, a hard cushioning material 67
with a constant thickness is provided as a sound transmitting material at a portion facing the
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cone portion 412 via the knitting spring 65. The cushioning material 67 is partially inserted into
the through hole 651 of the braided spring material 65.
[0020]
In a home theater system using an audio device having such a structure, based on the audio
signal output from the video device 1, each speaker 21A to 23B produces a clear sound with a
size that does not cause surrounding noise. It is sent out to the viewer M seated on the seat 3. At
the same time, the voices emitted from the speakers 41A to 44B of the headrest member 53, the
back member 52, the waist member 51, and the leg member 54 of the seat 3 are directly
transmitted through the cushion members 66 and 67 and the skin 63, respectively. It transmits
to the left and right position of the back M1 of the viewer M, the left and right position of the
back M2, the left and right position of the hip back M3, and the left and right leg back M4. As a
result, the viewer M is transmitted from the speakers 21A-23B at the same time as the audio that
reaches the ears from the speakers 21A-23B, and is output from the speakers 41A-44B through
the front faces 51a-54a that are the transmission surfaces directly through the body parts M1. It
is possible for the whole body to experience the situation where the sound source passes
centering on the viewer M and the situation where the sound source approaches or goes away
from a distance by receiving the sound vibration transmitted to M4. At this time, since the sound
of each of the speakers 41A to 44B is transmitted to the viewer through the solid without
propagating in the air, the sound output can be made sufficiently small so as not to be ambient
noise. The speakers 21A to 23B are not necessarily required. Further, the types and numbers of
low, medium and high sounds of the speakers 41A to 44B, and the division of the seat 3 into the
waist member 51, the back member 52, the headrest member 53, and the leg members 54 are
merely examples.
[0021]
It is a figure which shows the structure of the home theater system provided with the audio
equipment of this invention. It is a front view showing an example of a sheet. It is a side view
showing an example of a sheet. It is sectional drawing which shows the structure of a speaker
installation part.
Explanation of sign
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[0022]
21A,21B,22A,22B,23A,23B... スピーカ、3... シート、
41A,41B,42A,42B,43A,43B,44A,44B... スピーカ、51... Waist
member, 52 ... Back member, 53 ... Headrest member, 54 ... Leg members 51a, 52a, 53a, 54a ...
Front, 66 ... Soft cushioning material, 67 ... Hard cushion material, M ... Hearer, M1 ... The back of
the head, M2 ... Back, M3 ... Waist back, M4 ... Back of the leg.
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