Seat with loudspeaker

Abstract

The invention provides a seat with a loudspeaker. A speaker-equipped seat (1) is provided with: support parts (10, 11) having a cushion (12) and supporting the body of a seated person; and a speaker unit (20) that outputs sound in a first direction, which is one side in the out-of-plane direction of the diaphragm, the buffer member (12) has a housing hole that houses the speaker unit (20), and sound output in a second direction, which is opposite to the first direction, among the out-of-plane direction of the diaphragm enters the bottom surface of the housing hole and is absorbed by the buffer member (12).

Description

Technical Field

[0001] The present disclosure relates to a seat with a speaker. Background Art

[0002] Patent Document 1 discloses a seat with a speaker in which a speaker unit is provided in a seat back. The speaker unit comprises: a flat speaker in a rectangular plate shape that vibrates in an out-of-plane direction to output sound; a flat plate arranged in parallel with the flat speaker; and a caulking member arranged at the rear side of the flat plate and made of a foamed polyurethane resin.

[0003] Prior art literature

[0004] Patent Document 1: Japanese Patent Application Publication No. 2020-151052 Summary of the invention

[0005] Problems to be solved by the invention

[0006] When the diaphragm of the speaker unit vibrates in the out-of-plane direction, sounds of opposite phases are output to the front and rear sides of the diaphragm. If the sound output to the rear side of the diaphragm is circulated to the front side, it interferes with the sound output to the front side of the diaphragm, and the sound quality may be reduced. In order to prevent the sound output to the rear side of the diaphragm from circling, a housing is sometimes provided for the speaker unit.

[0007] However, if an attempt is made to provide a housing of sufficient volume for a speaker unit installed in a seat, there is a problem that the speaker unit enlarges the space in the seat.

[0008] An object of one aspect of the present disclosure is to reduce the size of a structure for preventing sound output to the back side of a diaphragm of a speaker unit provided in a seat from circling back.

[0009] Means for solving problems

[0010] In order to solve the above-mentioned problems, a chair with a speaker in one embodiment of the present invention comprises: a support portion, having a cushioning member, supporting the body of a seated person; and a speaker unit, having a vibration plate, outputting sound along a first direction which is one side of an out-of-plane direction of the vibration plate, the cushioning member having a receiving hole for receiving the speaker unit, the bottom surface of the receiving hole facing the vibration plate, and the sound output along a second direction in the out-of-plane direction of the vibration plate which is opposite to the first direction is incident on the bottom surface of the receiving hole and is absorbed by the cushioning member.

[0011] Effects of the Invention

[0012] According to one aspect of the present disclosure, a structure for preventing sound output to the back surface side of a diaphragm in a speaker unit disposed in a seat can be made smaller than conventional structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial front view of the seat with speakers according to the first embodiment of the present disclosure.

[0014] Figure 2 It is a front view of the speaker unit provided in the seat with speakers according to the first embodiment of the present disclosure.

[0015] Figure 3 It is an exploded perspective view of a speaker unit included in the seat with a speaker according to the first embodiment of the present disclosure.

[0016] Figure 4 yes Figure 2 AA surface view.

[0017] Figure 5 It is an exploded perspective view of a speaker unit included in a seat with a speaker according to a second embodiment of the present disclosure.

[0018] Figure 6 It is a schematic cross-sectional view of a speaker unit included in a seat with a speaker according to a second embodiment of the present disclosure.

[0019] Figure 7 It is a diagram showing simulation results related to the frequency characteristics of the sound pressure of the speaker unit included in the seat with speakers according to the second embodiment of the present disclosure.

[0020] Figure 8 It is a diagram showing an example of a cushioning member used in a seat with a speaker according to a third embodiment of the present disclosure.

[0021] Fig. 9 It is a diagram showing a modified example of the shock absorbing member. DETAILED DESCRIPTION

[0022] [First embodiment]

[0023] Figure 1 It is a partial front view of the seat with speakers according to the first embodiment of the present disclosure. Figure 1The seat 1 shown is an example of a seat with a speaker, and includes a seat back 10 and a headrest 11. In addition to the seat back 10 and the headrest 11, the seat 1 may also include a seat base, a footrest, etc. (not shown). The seat back 10 and the headrest 11 are examples of a support portion. The seat back 10 supports the back of the seated person. The headrest 11 supports the back of the seated person's head. The seat back 10 has a cushion 12 and a cover 13. The cushion 12 is formed of a foam such as polyurethane or sheet polyurethane. Two speaker units 20 are fixed to the cushion 12. The two speaker units 20 are respectively configured to output sound toward the vicinity of the two ears of the seated person of the seat 1. The cover 13 covers the cushion 12 and the two speaker units 20. The cover 13 is formed by perforating a mesh skin or genuine leather so that the sound output from the speaker unit 20 can pass through.

[0024] Figure 2 It is a front view of the speaker unit provided in the seat with speakers according to the first embodiment of the present disclosure. Figure 3 FIG. 1 is an exploded perspective view of a speaker unit of a seat with a speaker according to a first embodiment of the present disclosure. Figure 2 and Figure 3 The up-down direction, the front-back direction, and the left-right direction of the speaker unit 20A are defined as indicated by arrows.

[0025] The speaker unit 20A is the speaker unit 20 of the first embodiment, and includes a grille 22, a speaker 23, and a housing 24. The cushioning member 12A is the cushioning member 12 of the first embodiment. Figure 3 As shown, the cushioning member 12A has a receiving hole 50A. The speaker unit 20A is received in the receiving hole 50A.

[0026] like Figure 3 As shown, the receiving hole 50A has an opening 53 in front of the buffer 12A. The opening 53 of the receiving hole 50A is covered by the cover 21. The cover 21 is formed of a non-woven fabric or the like. The area of ​​the cover 21 is larger than the opening 53 of the receiving hole 50A of the buffer 12A. The cover 21 has an opening 21A that allows the sound output from the speaker unit 20 to pass through. The area of ​​the opening 21A is smaller than the grille 22, and a part of the grille 22 is exposed from the opening 21A. The periphery of the opening 21A of the cover 21 abuts against the periphery of the receiving hole 50A of the buffer 12A. The cover 21 is fixed to the buffer 12A. For example, the cover 21 is provided with a surface connector at a portion abutting against the periphery of the receiving hole 50A, and is fixed to the buffer 12A. The cover 21 prevents the speaker unit 20 accommodated in the receiving hole 50A from falling out of the receiving hole 50A, and fixes the speaker unit 20A to the buffer 12A.

[0027] The housing hole 50A is provided with a wiring hole 54. The wire harness 32 of the speaker 23 is inserted through the wiring hole 54. The speaker 23 is supplied with electric power and a sound signal via the wire harness 32.

[0028] The speaker 23 of the speaker unit 20A includes a vibration plate 30, an outer edge portion 31, and a harness 32. The vibration plate 30 outputs sound by vibrating in the out-of-plane direction. When the speaker unit 20A is accommodated in the accommodation hole 50A, the vibration plate 30 is arranged at a position facing the bottom surface 51A of the accommodation hole 50A and separated from the bottom surface 51A of the accommodation hole 50A. The direction of the front surface side of the speaker 23 in the out-of-plane direction of the vibration plate 30 is referred to as a first direction R1. On the other hand, the direction opposite to the first direction R1 in the out-of-plane direction of the vibration plate 30, that is, the direction of the rear surface side of the speaker 23 is referred to as a second direction R2.

[0029] The grille 22 protects the vibration plate 30 of the speaker 23. A plurality of hexagonal holes 22A are formed in the grille 22 in a honeycomb shape to allow sound to pass through. When the speaker unit 20A is accommodated in the accommodation hole 50A, the grille 22 is arranged between the cover 21 and the speaker 23. The sound output from the vibration plate 30 in the first direction R1 passes through the holes 22A of the grille 22 and the cover 21 and is output to the outside of the seat 1.

[0030] The grille 22 has through holes 42 near its four corners. The fastening member 40 is inserted through the through holes 42. The fastening member 40 is, for example, a screw or a bolt. The outer edge portion 31 of the speaker 23 has threaded holes 41 at its four corners. The fastening member 40 is inserted into the threaded hole 41 of the speaker 23 via the through holes 42. Thus, the grille 22 is connected to the speaker 23.

[0031] The housing 24 is an example of a structure. The housing 24 is disposed between the speaker 23 of the speaker unit 20A and the bottom surface 51A of the receiving hole 50A. The housing 24 has a first surface 71 facing the vibration plate 30 of the speaker 23, a second surface 72 which is the back side of the first surface 71 and contacts the bottom surface 51A of the receiving hole 50A, and a leg portion 73 protruding from the outer edge portion of the first surface 71. The leg portion 73 abuts against the outer edge portion 31 of the speaker 23.

[0032] The shell 24 has a plurality of through holes 74 between the first surface 71 and the second surface 72. The through holes 74 are, for example, hexagonal holes, and are arranged in a honeycomb shape on the first surface 71 and the second surface 72 of the shell 24. The sound transmittance of the shell 24 is lower than the sound transmittance of the grille 22. For example, the sound transmittance of the grille 22 is about 70%, and the sound transmittance of the shell 24 is about 50%. The sound output from the vibration plate 30 of the speaker 23 in the second direction R2 is incident on the bottom surface 51A of the receiving hole 50A through the through holes 74 of the shell 24, and is absorbed by the buffer 12A. Therefore, in the speaker unit 20A, the sound reverberation can be reduced.

[0033] Case 24 is connected to grille 22 and speaker 23 via leg 73. For example, case 24 has screw holes 75 and is fixed to grille 22 and speaker 23 by fastening member 40. Case 24 is connected to grille 22 and speaker 23, thereby improving the rigidity of speaker unit 20A.

[0034] Figure 4 yes Figure 2 AA plane view. A space is provided between the speaker 23 and the housing 24 to such an extent that it does not interfere with the movement of the vibration plate 30 of the speaker 23. The distance from the bottom surface 51A of the storage hole 50A to the opening 53 is substantially the same as the thickness of the grille 22, the speaker 23, and the housing 24 in the front-to-back direction.

[0035] [Second embodiment]

[0036] In the following, other embodiments of the present disclosure will be described. In addition, for the sake of convenience, the same reference numerals are given to components having the same functions as those described in the above embodiments, and their description will not be repeated.

[0037] Figure 5 It is an exploded perspective view of a speaker unit included in a seat with a speaker according to a second embodiment of the present disclosure. Figure 5 The speaker unit 20B of the second embodiment of the present disclosure shown is different from the speaker unit 20A of the first embodiment in that it does not have the housing 24. In addition, the cushioning member 12B of the second embodiment is different from the first embodiment in that the mounting step 52 protrudes from the bottom surface 51B of the receiving hole 50B. The mounting step 52 protrudes from both ends of the bottom surface 51B in the vertical direction.

[0038] Figure 6 FIG. 2 is a schematic cross-sectional view of a speaker unit provided in a seat with a speaker according to a second embodiment of the present disclosure. Figure 6As shown, the bottom surface 51B of the receiving hole 50B faces the vibration plate 30 of the speaker 23 received in the receiving hole 50B. A space is provided between the speaker 23 and the bottom surface 51B of the receiving hole 50B to such an extent that the movement of the vibration plate 30 of the speaker 23 is not interfered. The sound output from the vibration plate 30 of the speaker 23 in the second direction R2 is incident on the bottom surface 51B of the receiving hole 50B and is absorbed by the buffer member 12B. Therefore, in the speaker unit 20B, the sound can be reduced from being entangled.

[0039] In addition, the mounting step 52 of the receiving hole 50B abuts against the outer edge portion 31 of the speaker 23 received in the receiving hole 50B. The length from the mounting step 52 to the opening 53 of the receiving hole 50B in the front-to-back direction is substantially the same as the thickness of the grille 22 and the speaker 23 in the front-to-back direction. That is, when the speaker unit 20B is received in the receiving hole 50B, the speaker unit 20B and the opening 53 of the receiving hole 50B are substantially in the same plane.

[0040] Figure 7 : is a diagram showing simulation results related to the frequency characteristics of the sound pressure of the speaker unit provided in the seat with a speaker according to the second embodiment of the present disclosure. Figure 7 In FIG. 6 , a simulation result 60 related to the relationship between the frequency and the sound pressure of the sound output from the speaker unit 20B is indicated by a solid line. In the simulation, the volume of the space provided between the speaker 23 and the bottom surface 51B of the receiving hole 50B is set to 42 cc. Figure 7 In FIG. 6 , as a comparative example, a simulation result 61 related to a speaker unit having a 200cc housing and no buffer member for absorbing sound is indicated by a dashed line, and a simulation result 62 related to a speaker unit having no housing and no buffer member for absorbing sound is indicated by a single-dot chain line. Figure 7 As shown, speaker unit 20B can reduce the volume occupied by seat 1 while ensuring the same sound quality as that of a speaker unit provided with a 200 cc housing.

[0041] like Figure 7 As shown, in the speaker unit 20B of the second embodiment of the present disclosure, the sound pressure is reduced in the frequency band of 1000-3000 Hz compared with the speaker unit provided with a 200cc housing. As in the first embodiment of the present disclosure, the sound pressure of the predetermined frequency band can be adjusted by providing a housing 24 with a predetermined transmittance between the speaker 23 and the bottom surface 51A of the receiving hole 50A.

[0042] [Third embodiment]

[0043] Hereinafter, a third embodiment of the present disclosure will be described. In addition, for the sake of convenience of description, components having the same functions as those described in the above embodiment are denoted by the same reference numerals, and their description will not be repeated.

[0044] Figure 8 1 is a diagram showing an example of a cushion member used in a seat with a speaker according to a third embodiment of the present disclosure. A cushion member 12C according to the third embodiment has a receiving hole 50C. The receiving hole 50C of the cushion member 12C according to the third embodiment is different from the receiving hole 50B of the cushion member 12B according to the second embodiment in that a plurality of grooves 81 are provided on the bottom surface 51C.

[0045] The grooves 81 are formed by alternately arranging peaks 82 and valleys 83 extending in the left-right direction in the up-down direction. By providing a plurality of grooves 81 on the bottom surface 51C, the surface area of ​​the bottom surface 51C is increased, and the sound output from the vibration plate 30 of the speaker 23 in the second direction R2 can be absorbed more efficiently than the bottom surface 51A of the first embodiment.

[0046] The shape of the groove provided on the bottom surface 51C of the storage hole 50C is not limited to Figure 8 The shape of the groove 81 shown. Any other shape is acceptable as long as it can increase the surface area of ​​the surface that absorbs the sound output from the vibration plate 30 of the speaker 23 in the second direction R2. For example, the shape of the groove provided on the bottom surface 51C of the storage hole 50C may be a shape in which peaks and valleys extending in the vertical direction are alternately arranged in the left-right direction. In addition, the side surface of the groove may be inclined at an arbitrary angle or may be a curved surface.

[0047] The method of increasing the surface area of ​​the surface that absorbs the sound output from diaphragm 30 of speaker 23 in second direction R2 is not limited to providing groove 81 in bottom surface 51C. For example, a hole may be provided in bottom surface 51C of accommodation hole 50C.

[0048] Fig. 9 It is a diagram showing a modified example of the shock absorbing member. Fig. 9 The illustrated buffer member 12D has a plurality of holes 82 provided on the bottom surface 51D of the receiving hole 50D. In addition, a protrusion may be provided on the bottom surface 51D of the receiving hole 50D in place of the hole 82, or any combination of the groove 81, the hole 82, and the protrusion may be provided. In addition to the bottom surface 51D of the receiving hole 50D, or in place of the bottom surface 51D of the receiving hole 50D, any combination of the groove 81, the hole 82, and the protrusion may be provided on the side surface 55 of the receiving hole 50D. That is, any combination of the groove 81, the hole 82, and the protrusion may be provided on at least a portion of the bottom surface 51D and the side surface 55 of the receiving hole 50D.

[0049] In addition, the receiving hole 50D may also be provided with a rough surface on at least a portion of the bottom surface 51D and the side surface 55. By roughening at least a portion of the bottom surface 51D and the side surface 55 of the receiving hole 50D to form a rough surface, the efficiency of absorbing the sound output from the vibration plate 30 of the speaker 23 in the second direction R2 can be improved.

[0050] Hereinafter, the accommodation holes 50A, 50B, 50C, and 50D may be referred to as accommodation holes 50 . The bottom surfaces 51A, 51B, 51C, and 51D may be referred to as bottom surfaces 51 .

[0051] 〔Effect〕

[0052] As described above, the seat 1 includes: a seat back 10 having a cushion member 12 for supporting the body of a seated person; and a speaker unit 20 having a vibration plate 30 for outputting the sound outputted from the vibration plate 30 in the first direction R1, which is one side in the out-of-plane direction thereof, to the outside of the seat back 10. The cushion member 12 accommodates the speaker unit 20 and has an accommodation hole 50 having a bottom surface 51 facing the vibration plate 30 and absorbing the sound outputted from the vibration plate 30 in the second direction R2. By utilizing the cushion member 12 to efficiently absorb the sound outputted from the vibration plate 30 in the second direction R2, the structure for preventing the sound from circling back can be made smaller than before. By miniaturizing the structure for preventing the sound from circling back, the degree of freedom in the design of the appearance of the seat 1 can be increased.

[0053] [Variation]

[0054] In the first to third embodiments, the cover 21 is fixed to the cushion member 12 by a surface fastener provided at a portion abutting against the outer periphery of the receiving hole 50. However, the method of fixing the cover 21 to the cushion member 12 is not limited to the surface fastener. For example, it may be fixed by an adhesive, a button, a snap, a resin clip, etc.

[0055] In the first to third embodiments described above, the speaker unit 20 is received in the receiving hole 50 of the buffer member 12, and is fixed to the receiving hole 50 by the cover portion 21 fixed near the outer periphery of the receiving hole 50. However, the method of fixing the speaker unit 20 is not limited to the cover portion 21. For example, the speaker unit 20 may be fixed to the mounting step 52 of the receiving hole 50 by a surface fastener.

[0056] In the second and third embodiments, the receiving hole 50 is provided with the placement steps 52 at both ends in the vertical direction of the bottom surface 51. However, the placement steps 52 may be provided at both ends of the bottom surface 51 in the horizontal direction, or in both the horizontal direction and the vertical direction.

[0057] In the first to third embodiments, the speaker unit 20 is accommodated in the cushion 12 of the seat back 10, but the cushion that accommodates the speaker unit 20 is not limited to the seat back 10. For example, the cushion of the headrest 11 may be provided with the accommodation hole 50 for accommodation.

[0058] In the first to third embodiments, the speaker unit 20 outputs sound toward the vicinity of the two ears of the seated person of the seat 1, but the direction of the sound output is not limited to this. For example, the sound may be output toward the seated person sitting in the rear seat of the seat 1. In the case of outputting sound toward the seated person sitting in the rear seat of the seat 1, the buffer member 12 is provided with the receiving hole 50A, 50B, 50C or 50D on the back side, and the grille 22 and the speaker 23 of the speaker unit 20 are provided.

[0059] In the first to third embodiments, the cushioning member 12 is formed of a foam such as polyurethane or sheet polyurethane, but the material of the cushioning member 12 is not limited to foam. For example, the cushioning member 12 may also be formed of a three-dimensional mesh fiber structure in which elastic fibers are connected to form a three-dimensional mesh.

[0060] In the first embodiment described above, if Figure 3 As shown, the leg portion 73 of the housing 24 protrudes from the entire periphery of the outer edge of the first surface 71. However, the leg portion 73 of the housing 24 is not required to protrude from the entire periphery of the outer edge of the first surface 71. By not arranging a part of the leg portion 73, a part of the sound reflected by the housing 24 is incident on the side of the buffer 12A and absorbed by the buffer 12A, so that the sound can be reduced.

[0061] In the first to third embodiments, the holes 22A of the grille 22 and the through holes 74 of the housing 24 are arranged in a honeycomb pattern, but the present invention is not limited thereto. For example, the holes 22A and the through holes 74 may be arranged in a lattice pattern.

[0062] [Additional Notes]

[0063] The present disclosure is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present disclosure.

[0064] 〔Summarize〕

[0065] The chair with speakers of Scheme 1 of the present disclosure comprises: a support portion having a cushioning member that supports the body of a seated person; and a speaker unit having a vibration plate that outputs sound along a first direction that is one side of an out-of-plane direction of the vibration plate, the cushioning member having a receiving hole that receives the speaker unit, the bottom surface of the receiving hole facing the vibration plate, and the sound output along a second direction in the out-of-plane direction of the vibration plate that is opposite to the first direction is incident on the bottom surface of the receiving hole and is absorbed by the cushioning member.

[0066] According to the above structure, the bottom surface of the receiving hole of the buffer member faces the vibration plate, and the sound output from the vibration plate in the second direction is incident on the bottom surface of the receiving hole and absorbed by the buffer member. Since the buffer member can efficiently absorb the sound, the structure for preventing sound from circling back can be reduced.

[0067] The seat with speakers of Scheme 2 of the present disclosure is based on the seat with speakers of Scheme 1 above, and the seat with speakers further comprises a structure, wherein the structure comprises: a first surface facing the vibration plate, a second surface serving as the back side of the first surface, a leg protruding from the outer edge of the first surface, and a through hole between the first surface and the second surface, the structure being connected to the speaker unit via the leg, the second surface being in contact with the bottom surface of the receiving hole, and the sound output from the vibration plate along the second direction is incident on the bottom surface of the receiving hole through the through hole and is absorbed by the buffer member.

[0068] According to the above structure, the seat with a speaker further comprises a structure body, the structure body is connected to the speaker unit via a leg portion protruding from the first surface, the second surface as the back side of the first surface is in contact with the bottom surface of the receiving hole, and a through hole is provided between the first surface and the second surface. By having such a structure body, the rigidity of the speaker unit can be improved.

[0069] The seat with speakers of Scheme 3 of the present disclosure is based on the seat with speakers of Scheme 1 or Scheme 2, and further includes a cover portion, which allows the sound output from the vibration plate along the first direction to pass through, is fixed to the buffer member and covers the receiving hole.

[0070] According to the above structure, the cover part covers the housing hole for housing the speaker unit, and the cover part is fixed to the buffer member, thereby preventing the speaker unit from falling out of the housing hole.

[0071] A seat with speakers according to a fourth aspect of the present disclosure is the seat with speakers according to the first aspect, wherein a placement step of the cushion member that contacts an outer edge of the speaker unit protrudes from the bottom surface of the accommodation hole.

[0072] According to the above structure, the loading step of the buffer member abutting against the outer edge of the speaker unit protrudes from the bottom surface of the receiving hole. Thus, a space is ensured between the speaker unit and the bottom surface of the receiving hole, and when the buffer is deformed, the bottom surface of the receiving hole can be prevented from interfering with the vibration plate.

[0073] In a seat with speakers according to a fifth aspect of the present disclosure, in addition to the seat with speakers according to the fourth aspect, the speaker unit is fixed to the placement step.

[0074] According to the above structure, the speaker unit is fixed to the placement step of the accommodation hole of the cushioning member. Thus, the speaker unit can be fixed to the seat with a speaker with a small number of parts.

[0075] A seat with a speaker according to claim 6 of the present disclosure is the seat with a speaker according to claim 1, wherein the receiving hole is formed with at least one of a groove, a hole and a protrusion in at least a portion of the bottom surface and the side surface.

[0076] According to the above configuration, at least one of the groove, the hole and the protrusion is formed on at least a portion of the bottom surface and the side surface of the receiving hole. Therefore, the buffer can efficiently absorb the sound output from the vibration plate in the second direction.

[0077] A seat with a speaker according to claim 7 of the present disclosure is the seat with a speaker according to claim 1, wherein the housing hole has a rough surface on at least a portion of the bottom surface and the side surface.

[0078] According to the above configuration, at least a portion of the bottom surface and the side surface of the receiving hole has a rough surface. Therefore, the buffer member can efficiently absorb the sound output from the vibration plate in the second direction.

[0079] A seat with a speaker according to claim 8 of the present disclosure is the seat with a speaker according to claim 1, wherein the cushioning member is formed of a foam or a three-dimensional mesh fiber structure.

[0080] According to the above structure, the buffer member can absorb the sound output from the vibration plate in the second direction. In addition, the buffer member can be easily provided with the receiving hole.

[0081] Description of Reference Numerals

[0082] 1 Seat

[0083] 10 Seat back

[0084] 11 Headrest

[0085] 12, 12A, 12B, 12C, 12D buffer parts

[0086] 20, 20A, 20B speaker units

[0087] 21 cover

[0088] 22 Grille

[0089] 23 speakers

[0090] 24 Shell

[0091] 30 vibration plates

[0092] 31 Outer edge

[0093] 50, 50A, 50B, 50C, 50D receiving holes

[0094] 51, 51A, 51B, 51C, 51D bottom

[0095] 52 loading steps

[0096] 54 wiring holes

[0097] 55 Side

[0098] 73 Legs

[0099] R1 first direction

[0100] R2 second direction.

Claims

1. A chair with a speaker, comprising: A support portion having a cushioning member to support the body of a seated person; and a speaker unit having a diaphragm and outputting sound in a first direction which is one side in an out-of-plane direction of the diaphragm, The buffer member has a receiving hole for receiving the speaker unit. The bottom surface of the receiving hole faces the vibration plate. The sound output in a second direction opposite to the first direction among the out-of-plane directions of the vibration plate is incident on the bottom surface of the accommodation hole and is absorbed by the buffer member.

2. The seat with a speaker according to claim 1, wherein: The speaker-equipped chair further includes a structure having a first surface facing the vibration plate, a second surface as a back surface of the first surface, a leg portion protruding from an outer edge of the first surface, and a through hole between the first surface and the second surface. The structure is connected to the speaker unit via the leg. The second surface is in contact with the bottom surface of the receiving hole, The sound output from the vibration plate in the second direction passes through the through hole and is incident on the bottom surface of the accommodation hole, and is absorbed by the buffer member.

3. The seat with a speaker according to claim 1 or 2, wherein: The seat with a speaker further includes a cover portion that transmits the sound output from the vibration plate in the first direction, is fixed to the cushioning member, and covers the accommodation hole.

4. The seat with a speaker according to claim 1, wherein: A placement step of the buffer member that contacts an outer edge of the speaker unit protrudes from the bottom surface of the accommodation hole.

5. The seat with a speaker according to claim 4, wherein: The speaker unit is fixed to the mounting step.

6. The seat with a speaker according to claim 1, wherein: The receiving hole has at least one of a groove, a hole and a protrusion formed in at least a portion of the bottom surface and the side surface.

7. The seat with a speaker according to claim 1, wherein: At least a portion of the bottom surface and the side surface of the receiving hole has a rough surface.

8. The seat with a speaker according to claim 1, wherein: The cushioning member is formed of a foamed body or a three-dimensional mesh fiber structure.

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