JP6829410B1 - Speaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker device having a novel configuration in which dust is easily suppressed from entering the inside of a support portion. SOLUTION: A speaker device 1 includes a support portion, a rotating portion 90, and a dustproof portion 75. The support portion is provided with a storage chamber 5a and an opening 50a communicating with the storage chamber. The rotating portion has a sound emitting portion 99 that radiates sound, and is rotatably supported by a support portion around the rotation center axis Ax1. The cable 80 passes through the opening and is provided over the accommodation chamber and the sound emitting portion. The dustproof portion is provided in the opening and can catch dust, and is elastically deformed by being pushed by a cable moving in the circumferential direction of the rotation center axis in the opening. [Selection diagram] Fig. 4

Description

The present invention relates to a speaker device.

Conventionally, for example, there is a speaker device installed on the ceiling of a store or the like. As this type of speaker device, a support portion mounted on the ceiling, a rotating portion having a sound radiating portion and rotatably supported by the support portion, and a cable provided over the support portion and the sound radiating portion, There is one equipped with.

Japanese Unexamined Patent Publication No. 2020-129821

The support portion of this type of speaker device is provided with an opening through which a cable passes, and dust may enter the inside of the support portion from the opening. Therefore, it would be beneficial to obtain a speaker device having a new configuration in which dust is easily suppressed from entering the inside of the support portion.

One of the problems of the present invention is to obtain a speaker device having a novel configuration in which dust is easily suppressed from entering the inside of the support portion.

The speaker device according to the first aspect of the present invention has a storage chamber, a support portion provided with an opening communicating with the storage chamber, and a sound radiating portion that radiates sound, and is around the center axis of rotation. Rotatably supported by the support portion, a cable provided through the opening and extending between the storage chamber and the sound radiating portion, and a cable provided in the opening to catch dust. It is provided with a dustproof portion that is elastically deformed by being pushed by the cable that moves in the circumferential direction of the rotation center axis in the opening.

In the speaker device, for example, the dustproof portion has conductivity.

In the speaker device, for example, the support portion has a case, a shaft partially housed in the case, and a bearing that rotatably supports the shaft around the rotation center axis, and has conductivity. A bearing holder that supports the bearing is provided, the opening is provided between the case and the bearing holder, and the dustproof portion is supported by the bearing holder.

In the speaker device, for example, the dustproof portion is a brush.

In the speaker device, for example, the dustproof portion has a plurality of strip-shaped sheets.

According to the above aspect of the present invention, it is possible to obtain a speaker device having a novel configuration in which dust is easily suppressed from entering the inside of the support portion.

FIG. 1 is an exemplary perspective view from above of the speaker device of the first embodiment. FIG. 2 is an exemplary side view of the speaker device of the first embodiment. FIG. 3 is an exemplary perspective view from below of the speaker device of the first embodiment. FIG. 4 is an exemplary cross-sectional view of the speaker device of the first embodiment. FIG. 5 is an exemplary cross-sectional view of a portion of the speaker device of the first embodiment. FIG. 6 is an exemplary perspective view of the internal configuration of the speaker device of the first embodiment. FIG. 7 is an exemplary cross-sectional view of a portion of the speaker device of the first embodiment. FIG. 8 is an exemplary cross-sectional view of a part of the speaker device of the first embodiment, in which the dustproof portion is not shown. FIG. 9 is an exemplary perspective view of a bearing, a bearing holder, and a dustproof portion in the speaker device of the first embodiment. FIG. 10 is an exemplary cross-sectional view of a part of the speaker device of the first embodiment, in which the rotating portion is rotated with respect to the horizontal position. FIG. 11 is an exemplary perspective view of a bearing, a bearing holder, and a dustproof portion in the speaker device of the second embodiment.

Hereinafter, exemplary embodiments of the present invention will be disclosed. The configurations of the embodiments shown below, as well as the actions and effects produced by the configurations, are examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments. Further, according to the present invention, it is possible to obtain at least one of various effects (including derivative effects) obtained by the configuration.

In addition, the following plurality of embodiments include similar components. Common symbols are assigned to these similar components, and duplicate explanations are omitted.

<First Embodiment>
FIG. 1 is an exemplary perspective view of the speaker device 1 of the present embodiment from above. FIG. 2 is an exemplary side view of the speaker device 1 of the present embodiment. FIG. 3 is an exemplary perspective view from the lower side of the speaker device 1 of the first embodiment.

As shown in FIGS. 1 to 3, the speaker device 1 includes a fixing unit 10, a driving unit 50, and a rotating unit 90 that emits sound. The fixing portion 10 is fixed to an installation wall 2 (FIG. 2) such as a ceiling surface. The fixed portion 10 and the driving portion 50 form a supporting portion 5 that supports the rotating portion 90. The support portion 5 rotatably supports the rotating portion 90 around the rotation center axis Ax1 and around the rotation center axis Ax2 within a predetermined angle range, respectively. The rotation center axis Ax1 intersects the installation wall 2 (orthogonally as an example). The rotation center axis Ax2 intersects with the rotation center axis Ax1 (as an example, orthogonal to each other). The installation wall 2 is also referred to as an installation part or an installation target part.

FIG. 4 is an exemplary cross-sectional view of the speaker device 1 of the first embodiment.

As shown in FIG. 4, the fixing portion 10 includes a case 11, a plurality of couplers 12, and a substrate device 13.

The case 11 is composed of a combination of a plurality of case members 14 to 16. The case member 14 has a bottom wall 14a and a cylindrical portion 14b extending upward from the outer peripheral portion of the bottom wall 14a. The case member 14 is made of, for example, a synthetic resin material. The case member 15 is arranged so as to close the opening at the upper end of the cylindrical portion 14b. The case member 16 is arranged below the case member 15. The case member 16 is fixed to the case member 15 by a fitting 17 such as a screw. Further, the case member 16 is overlapped with the bottom wall 14a on the upper side of the bottom wall 14a and fixed to the bottom wall 14a. The case members 15 and 16 and the binder 17 are made of a conductive material such as iron. The case 11 is provided with a storage chamber 11a. The storage chamber 11a is surrounded by case members 14 to 16.

The fitting 12 is fixed to the case member 15 and projects upward from the case member 15. The fitting 12 is, for example, a bolt and is coupled to a nut provided on the installation wall 2. The binder 12 is made of a conductive material such as metal.

The substrate device 13 is housed in the storage chamber 11a. The board device 13 includes a board 18, a plurality of electronic components 19 mounted on the board 18, and a connector 20 mounted on the board 18. The connector 20 can be coupled to an external connector (not shown). For example, an electric signal such as sound data is input to the connector 20 from an external connector.

FIG. 5 is an exemplary cross-sectional view of a part of the speaker device 1 of the first embodiment. FIG. 6 is an exemplary perspective view of the internal configuration of the speaker device 1 of the first embodiment.

As shown in FIGS. 1 and 4 to 6, the drive unit 50 includes a case 51, a frame 52, and two rotation mechanisms 53 and 54.

As shown in FIGS. 1 and 4, the case 51 has a base 51a and two protrusions 51b, 51c. The base 51a is formed in a tubular shape around the rotation center axis Ax1. The two protrusions 51b and 51c extend downward from the base 51a. The two protrusions 51b and 51c are separated from each other in the axial direction of the rotation center axis Ax2. The case 51 is made of, for example, a synthetic resin material.

The case 51 is provided with a groove 51d between the two protrusions 51b and 51c. The groove 51d is formed by an outer surface 51ab of the bottom wall 51aa included in the base 51a, an outer surface 51bb of the wall 51ba included in the protrusion 51b, and a wall 51cab of the wall 51ca included in the protrusion 51c. Further, an opening 51h (through hole) is formed in the groove 51d. The opening 51h penetrates the bottom wall 51aa, the wall 51ba, and the wall 51ca.

Further, a storage chamber 51e is provided inside the case 51. The storage chamber 51e is provided over the base 51a, the protruding portion 51b, and the protruding portion 51c. The accommodation chamber 51e constitutes the accommodation chamber 5a of the support portion 5 together with the accommodation chamber 11a.

As shown in FIGS. 4 and 5, the frame 52 is housed in the containment chamber 51e. The frame 52 is fixed to the bottom wall 14a of the case member 14. As shown in FIGS. 4 to 6, the frame 52 is composed of a combination of a plurality of frame members 55 and 56. The plurality of frame members 55 and 56 are fixed to each other. The frame members 55 and 56 are made of a conductive material such as iron. That is, the frame 52 has conductivity.

As shown in FIGS. 4 and 5, the rotation mechanism 53 is housed in the storage chamber 51e. As shown in FIGS. 4 to 6, the rotation mechanism 53 includes a shaft 60, a motor 61, a gear mechanism 62, and a bearing 63.

The shaft 60 is rotatably supported by a bearing 63 around the rotation center axis Ax1 with respect to the frame 52 and thus the fixed portion 10. The bearing 63 is supported by the frame 52. The motor 61 is supported by the frame 52. The gear mechanism 62 has a bevel gear 64 fixed to the shaft 60 and a bevel gear 65 fixed to the rotating shaft of the motor 61 and meshing with the bevel gear 64. The gear mechanism 62 converts the rotary motion of the motor 61 into the rotary motion of the shaft 60.

A support member 58 is fixed to the lower end of the shaft 60 via a fixing member 57. The support member 58 supports the case 51 and the rotation mechanism 53. Further, the support member 58 supports the rotating portion 90 via the rotating mechanism 53. The fixing member 57, the support member 58, the case 51, the rotating mechanism 53, and the rotating portion 90 are integrated with the shaft 60 and rotate around the rotation center axis Ax1. The fixing member 57 and the supporting member 58 are made of a conductive material such as metal.

In the rotation mechanism 53 having the above configuration, the shaft 60 is rotated by the power of the motor 61. The rotation of the shaft 60 causes the case 51, the rotation mechanism 53, and the rotating portion 90 to rotate around the rotation center axis Ax1.

The rotation of the shaft 60 can be locked by the lock pin 66. The lock pin 66 is inserted into the hole provided in the case 51 and also inserted into the hole 16a provided in the case member 16 of the fixing portion 10, thereby limiting the rotation of the case 51 and thus the shaft 60. When the lock pin 66 is removed from the hole 16a, the shaft 60, the case 51, the rotation mechanism 53, and the rotating portion 90 can rotate around the rotation center axis Ax1.

As shown in FIGS. 4 to 6, the rotation mechanism 54 includes a shaft 68, a motor 69, bearings 70 and 71, and bearing holders 72 and 73.

The shaft 68 is rotatably supported by bearings 70 and 71 around the rotation center axis Ax2 with respect to the support member 58 and thus the case 51, the frame 52, and the fixing portion 10. Both ends of the shaft 60 in the axial direction are housed in the storage chamber 51e, and the intermediate portion of the shaft 60, specifically the shaft 60 between the bearing 70 and the bearing 71, is located outside the case 51. A rotating portion 90 is fixed to the shaft 60 between the bearing 70 and the bearing 71. As a result, the shaft 60 and the rotating portion 90 are integrated and rotate around the rotation center axis Ax2. The shaft 68 is made of a conductive material such as metal.

The bearings 70 and 71 are supported by the support member 58 via the bearing holders 72 and 73. Details of the bearing holder 72 will be described later. The motor 69 is supported by a support member 58.

In the rotation mechanism 53 having the above configuration, the shaft 68 is rotated by the power of the motor 69. Due to the rotation of the shaft 68, the rotating portion 90 rotates around the rotation center axis Ax2.

FIG. 7 is an exemplary cross-sectional view of a part of the speaker device 1 of the present embodiment. FIG. 8 is an exemplary cross-sectional view of a part of the speaker device 1 of the first embodiment, in which the dustproof portion 75 is not shown.

As shown in FIGS. 7 and 8, at least a part of the bearing holder 72 is located in the opening 51h provided in the groove 51d. An opening 50a is provided between the bearing holder 72 and the protrusion 51b. The opening 50a is included in the opening 51h. The opening 50a communicates with the accommodation chamber 5a.

FIG. 9 is an exemplary perspective view of the bearing 70, the bearing holder 72, and the dustproof portion 75 in the speaker device 1 of the first embodiment.

As shown in FIG. 9, the bearing holder 72 has a base 72a and a semicircular portion 72b protruding downward from the base 72a. The semicircular portion 72b projects downward from the central portion of the base 72a. As a result, the base 72a has a protruding portion 72d that protrudes from the semicircular portion 72b. The bearing holder 72 is made of a conductive material such as metal.

The lower surface 72da of the protruding portion 72d and the outer peripheral surface 72ba of the semicircular portion 72b face the opening 50a. The lower surface 72da and the outer peripheral surface 72ba and the edge portion (edge surface) of the opening 51h in the protruding portion 51b form an opening 50a.

The bearing holder 72 is provided with a through hole 72c into which the bearing 70 is fitted.

Further, the semicircular portion 72b is provided with a dustproof portion 75 and is located at the opening 50a. In other words, the dustproof portion 75 is provided in the opening 50a. The dustproof portion 75 is provided so as to partially close the opening 50a.

The dustproof portion 75 is a brush. Specifically, the dustproof portion 75 has a plurality of hair bundles 76. The hair bundle 76 has a plurality of hairs 76a. The plurality of hair bundles 76 are arranged around the rotation center axis Ax2 on the outer peripheral surface 72ba of the semicircular portion 72b. The plurality of hair bundles 76 project from the outer peripheral surface 72ba of the semicircular portion 72b. The base end portion of the hair bundle 76 is fixed to the semicircular portion 72b, and the tip end portion of the hair bundle 76 is not fixed. That is, the hair 76a is transplanted to the bearing holder 72. The hair 76a contains a conductive material such as iron and has conductivity. Also, the hair 76a may be composed of a single material or multiple materials. The hair 76a may be made of a synthetic resin material or may be animal hair. The hair 76a and the hair bundle 76 are elastically deformable. That is, the dustproof portion 75 is elastically deformable. In other words, the dustproof portion 75 has flexibility. The dustproof portion 75 can catch dust that is about to pass through the opening 50a. In other words, dust adheres to the dustproof portion 75. The dustproof portion 75 is also referred to as a static elimination brush. Dust is also called a foreign substance.

As shown in FIG. 4, the rotating portion 90 includes a case 91, a support column 92, and a sound emitting portion 99.

The case 91 is composed of a combination of a plurality of case members 94 to 96. The case member 94 is formed in a cylindrical shape. The case member 95 closes the opening at the upper end of the case member 94, and the case member 96 closes the opening at the lower end of the case member 96. The plurality of case members 94 to 96 are fixed to each other.

The support column 92 is fixed to the case member 95 and projects upward from the case member 95. The support column 92 is formed in a tubular shape.

The sound emitting unit 99 is housed in the case 91. The sound emitting unit 99 has a plurality of speaker elements 93 which are conversion elements for converting an electric signal into sound. An electric signal is input to the sound emitting unit 99 by the cable 80. The sound emitting unit 99 is also referred to as a sound output unit.

As shown in FIGS. 4 and 5, the cable 80 is provided through the opening 50a and across the accommodation chamber 5a and the sound emitting portion 99. The cable 80 is electrically connected to, for example, the substrate device 13. Further, the cable 80 is connected to the sound emitting portion 99 through the inside of the support column 92. The cable 80 extends in and out of the support column 92 through the annular protective member 98 attached to the support column 92. The protective member 98 is fitted in a through hole provided in the support column 92. That is, the cable 80 passes through the through hole of the support column 92. The protective member 98 is made of, for example, a synthetic resin material, an elastomer, or the like.

FIG. 10 is an exemplary cross-sectional view of a part of the speaker device 1 of the first embodiment, and is a view showing a state in which the rotating portion 90 is rotated with respect to a horizontal position.

In the speaker device 1 having the above configuration, as shown in FIGS. 7 and 10, the rotating portion 90 can rotate about the rotation center axis Ax2 with respect to the supporting portion 5. When the rotating portion 90 rotates about the rotation center axis Ax2 with respect to the support portion 5, the cable 80 moves in the circumferential direction of the rotation center axis Ax2 in the opening 50a. At this time, the hair bundle 76 of the dustproof portion 75 is elastically deformed by being pushed by the cable 80. That is, the dustproof portion 75 allows the cable 80 to move in the circumferential direction of the rotation center axis Ax2 in the opening 50a.

As described above, in the present embodiment, the speaker device 1 includes a support portion 5, a rotating portion 90, a cable 80, and a dustproof portion 75. The support portion 5 is provided with a storage chamber 5a and an opening 50a communicating with the storage chamber 5a. The rotating portion 90 has a sound emitting portion 99 that radiates sound, and is rotatably supported by the supporting portion 5 around the rotation center axis Ax2. The cable 80 passes through the opening 50a and is provided over the accommodation chamber 5a and the sound emitting portion 99. The dustproof portion 75 is provided in the opening 50a and can catch dust. The dustproof portion 75 is elastically deformed by being pushed by the cable 80 that moves in the circumferential direction of the rotation center axis Ax2 in the opening 50a.

According to such a configuration, since the dustproof portion 75 provided in the opening 50a catches the dust, it is easy to prevent the dust from entering the inside of the support (accommodation chamber 5a) from the opening 50a. Therefore, it is easy to prevent the accommodation chamber 5a from becoming dirty.

Further, in the present embodiment, the dustproof portion 75 has conductivity.

According to such a configuration, for example, static electricity of the cable 80 easily flows to the dustproof portion 75.

Further, in the present embodiment, the support portion 5 has conductivity with the case 51, the shaft 68 partially housed in the case 51, and the bearing 70 rotatably supporting the shaft 68 around the rotation center axis Ax2. It includes a bearing holder 72 that has and supports the bearing 70. The opening 50a is provided between the case 51 and the bearing holder 72. The dustproof portion 75 is supported by the bearing holder 72.

According to such a configuration, for example, static electricity of the cable 80 easily flows to the bearing holder 72 via the dustproof portion 75. Here, in the present embodiment, the static electricity of the cable 80 is the dustproof portion 75, the bearing holder 72, the bearing 70, the support member 58, the fixing member 57, the shaft 60, the bearing 63, the frame 52, the case member 16, and the fitting 17. And flows through the case member 15 to the fitting 12. As a result, noise such as static electricity of the cable 80 can be sent to the outside of the speaker device 1. Therefore, it is possible to suppress the transmission of noise such as static electricity to the substrate device 13. Here, the frame 52 and the case member 16 are electrically connected.

Further, in the present embodiment, the dustproof portion 75 is a brush.

According to such a configuration, for example, the appearance of the dustproof portion 75 can be easily improved. That is, it is easy to improve the aesthetic appearance of the speaker device 1.

<Second embodiment>
FIG. 11 is an exemplary perspective view of the bearing 70, the bearing holder 72, and the dustproof portion 75 in the speaker device 1 of the second embodiment.

The speaker device 1 of the present embodiment has the same configuration as the speaker device 1 of the first embodiment. However, as shown in FIG. 11, the speaker device 1 of the present embodiment includes a dustproof unit 75A instead of the dustproof unit 75.

The dustproof portion 75A has a plurality of strip-shaped sheets 76A. The plurality of sheets 76A are arranged around the rotation center axis Ax2 on the outer peripheral surface 72ba of the semicircular portion 72b. The plurality of sheets 76A project from the outer peripheral surface 72ba of the semicircular portion 72b. The base end portion of the sheet 76A is fixed to the semicircular portion 72b, and the tip end portion of the sheet 76A is not fixed. The sheet 76A contains a conductive material such as iron and has conductivity. The sheet 76A may be composed of a single material or a plurality of materials. Further, the sheet 76A may be made of a synthetic resin material. The sheet 76A is elastically deformable. That is, the dustproof portion 75A is elastically deformable. In other words, the dustproof portion 75A has flexibility. The dustproof portion 75A can catch dust that is about to pass through the opening 50a. In other words, dust adheres to the dustproof portion 75A.

As described above, in the present embodiment, the dustproof portion 75A has a plurality of strip-shaped sheets 76A.

According to such a configuration, the dustproof portion 75 can be made relatively inexpensive.

Although the embodiments of the present invention have been exemplified above, the above-described embodiment is an example and is not intended to limit the scope of the invention. The above-described embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the gist of the invention. In addition, specifications such as each configuration and shape (structure, type, direction, type, size, length, width, thickness, height, number, arrangement, position, material, etc.) are changed as appropriate. Can be carried out.

1 ... Speaker device, 5 ... Support, 5a ... Storage chamber, 50a ... Opening, 51 ... Case, 68 ... Shaft, 70 ... Bearing, 72 ... Bearing holder, 75, 75A ... Dustproof part, 76A ... Sheet, 80 ... Cable, 90 ... Rotating part, 99 ... Sound emitting part, Ax2 ... Rotating center axis.

Claims (5)

A support portion provided with a containment chamber and an opening communicating with the containment chamber,
A rotating portion that has a sound radiating portion that radiates sound and is rotatably supported by the supporting portion around the center axis of rotation.
A cable provided through the opening and between the accommodation chamber and the sound emitting portion,
A dustproof portion provided in the opening, capable of catching dust, and elastically deformed by being pushed by the cable moving in the circumferential direction of the rotation center axis in the opening.
Speaker device equipped with. The speaker device according to claim 1, wherein the dustproof portion has conductivity. The support portion
With the case
A shaft partially housed in the case and
A bearing that rotatably supports the shaft around the center axis of rotation,
A bearing holder that has conductivity and supports the bearing,
With
The opening is provided between the case and the bearing holder.
The speaker device according to claim 1 or 2, wherein the dustproof portion is supported by the bearing holder. The speaker device according to any one of claims 1 to 3, wherein the dustproof portion is a brush. The speaker device according to any one of claims 1 to 3, wherein the dustproof portion has a plurality of strip-shaped sheets.

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