WO2017104118A1

WO2017104118A1 - Speaker device

Info

Publication number: WO2017104118A1
Application number: PCT/JP2016/005076
Authority: WO
Inventors: 久世　光一; 松村　俊之; 佐和子狩野; 佐伯　周二
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-12-17
Filing date: 2016-12-07
Publication date: 2017-06-22
Also published as: JPWO2017104118A1; JP6890232B2

Abstract

A speaker device is provided with a first sound path body, a first speaker unit, a second sound path body, and a second speaker unit. The first sound path body has a first opening for emitting sound. The first speaker unit is mounted with a first sound emitting surface that is a surface for emitting sound facing the inside of the first sound path body. The second sound path body has a second opening for emitting sound. The second speaker unit is mounted with a second sound emitting surface that is a surface for emitting sound facing the inside of the second sound path body. The first speaker unit and the second speaker unit are disposed such that a vibration direction axis of a first vibration part having a diaphragm and a voice coil body of the first speaker unit and a vibration direction axis of a second vibration part having a diaphragm and a voice coil body of the second speaker unit match.

Description

Speaker device

The present disclosure relates to a speaker device, and more particularly, to a speaker device that suppresses generation of vibration.

Conventionally, in order to radiate sound into a room in a moving body such as a vehicle, a ship, or an aircraft, a loudspeaker may be embedded in a wall portion surrounding the room. For example, when the moving body is a car, a loudspeaker in a car audio device as shown in Patent Document 1 is provided with a mounting hole for mounting a speaker in a door, rear tray, pillar, or the like that can be regarded as a wall, and embedded in the wall. Installed.

Moreover, regarding the vibration of the speaker device, a technique for suppressing vibration of a cabinet to which the speaker unit is attached by disposing a pair of speaker units facing each other and vibrating each diaphragm (for example, Patent Document 2) is disclosed. reference).

JP 11-308682 A Japanese Patent Laid-Open No. 11-234781

The speaker device according to the present disclosure includes a first sound path body, a first speaker unit, a second sound path body, and a second speaker unit. The first sound path body has a first opening that radiates sound. The first speaker unit is attached with a first sound emitting surface, which is a surface that emits sound, facing the inside of the first sound path body. The second sound path body has a second opening that radiates sound. The second speaker unit has a second opening that radiates sound. The first speaker unit and the second speaker unit include a vibration direction axis of a first vibration part having a diaphragm and a voice coil body of the first speaker unit, a second diaphragm having a diaphragm and a voice coil body of the second speaker unit. It arrange | positions so that the vibration direction axis | shaft of a vibration part may correspond.

According to the present disclosure, since the first speaker unit and the second speaker unit are arranged so that the vibration direction axes coincide with each other, the sound paths that can cancel each other's vibrations and transmit the sound are transmitted. Since each body is provided, resonance of sound between the two speaker units can be suppressed.

Further, the speaker device of the present disclosure may be arranged in a wall portion surrounding a room in the moving body. In this case, the first sound path body is disposed in the wall portion, and the first opening is provided in the wall portion and opens into the room. The second sound path body is disposed in the wall portion, and the second opening portion is provided in the wall portion and opens into the room.

Thereby, even when arrange | positioning in the wall part of a moving body, a 1st speaker unit and a 2nd speaker unit are arrange | positioned so that a vibration direction axis may correspond, and it is comprised so that a mutual vibration may be canceled. Therefore, generation of vibration can be suppressed and acoustic characteristics can be improved.

The speaker device of the present disclosure further includes a sound absorbing material disposed between the first sound path body and the second sound path body, and the first sound path body has a first sound absorbing opening connected to the sound absorbing material. In addition, the second sound path body may have a second sound absorbing opening connected to the sound absorbing material.

Thereby, since the first speaker unit and the second speaker unit are arranged so that the vibration direction axes coincide with each other and are configured to cancel each other's vibrations, generation of vibrations can be suppressed. At the same time, the sound absorption opening can ensure the flatness of the frequency in the high sound range.

FIG. 1 is a perspective view schematically showing a state in which the speaker device according to the first embodiment is attached to a door of a car. FIG. 2 is a perspective view showing the speaker device according to the first embodiment in a transparent state. FIG. 3 is a perspective view showing the first sound path body. FIG. 4 is a perspective view showing a second sound path body. FIG. 5 is a graph showing the frequency characteristics emitted by the speaker device according to the first embodiment. FIG. 6 is a cross-sectional view schematically showing the vicinity of the speaker unit. FIG. 7 is a perspective view showing the speaker device according to the second embodiment in a transparent state. FIG. 8 is a perspective view showing the speaker device according to the third embodiment in a see-through state. FIG. 9 is a cross-sectional view schematically showing another example of the arrangement relationship of the speaker units. FIG. 10 is a cross-sectional view simply showing another example of the arrangement relationship of the speaker units. FIG. 11: is a perspective view which shows the speaker apparatus concerning 1st Embodiment provided with another example of housing | casing shape in a see-through state. FIG. 12: is a perspective view which shows the speaker apparatus concerning 2nd Embodiment provided with another example of housing | casing shape in a see-through | perspective state. FIG. 13: is a perspective view which shows the speaker apparatus concerning 3rd Embodiment provided with another example of housing | casing shape in a see-through | perspective state.

Prior to the description of the embodiment of the present disclosure, the problems in the conventional apparatus will be briefly described. The wall part to which the speaker device for the moving body is attached may have low rigidity due to weight reduction, etc., and the speaker frame vibrates in the opposite direction as a reaction of the vibration of the diaphragm such as the speaker cone or the voice coil body. There is a problem that this vibration causes the wall of the moving body that supports the speaker frame to vibrate, thereby deteriorating the acoustic characteristics in the room.

The present disclosure has been made in view of the above problems, and provides a speaker device that can improve the acoustic characteristics while suppressing the occurrence of vibration of the speaker device.

Further, like the speaker device described in Patent Document 2, a pair of speaker units are arranged opposite to each other with a single sound path body interposed therebetween, and the pair of speaker units are vibrated in the same phase so that sound is generated in the sound path body. By superimposing the pressure, it is possible to increase the sound pressure of the bass while suppressing the occurrence of vibration.

However, as a result of diligent experiments and research, the influence of resonance generated inside the sound path body reduces the flatness of the frequency of the sound radiated by the speaker device, and in particular, the deterioration of flatness in the high sound range becomes a problem. I came to find it.

The present disclosure has been made based on the above knowledge, and provides a speaker device capable of improving the flatness of the frequency while suppressing the occurrence of vibration of the speaker device.

Hereinafter, embodiments of the speaker device according to the present disclosure will be described with reference to the drawings. Note that the following embodiments are merely examples of speaker devices according to the present disclosure. Accordingly, the scope of the present disclosure is defined by the wording of the claims with reference to the following embodiments, and is not limited to the following embodiments. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present disclosure are not necessarily required to achieve the object of the present disclosure. It will be described as constituting a preferred form.

In addition, the drawings are schematic diagrams in which emphasis, omission, and ratio adjustment are appropriately performed to show the present disclosure, and may differ from actual shapes, positional relationships, and ratios.

(First embodiment)
FIG. 1 is a perspective view schematically showing a state in which the speaker device according to the first embodiment is attached to a door of a car.

FIG. 2 is a perspective view showing the speaker device according to the first embodiment in a transparent state.

As shown in FIGS. 1 and 2, the speaker device 100 is a device that is disposed in a door 201 that is one of wall portions surrounding a room in an automobile 200 that is a moving body, and includes a first sound path body 111. A second sound path body 112, a first speaker unit 121, and a second speaker unit 122. In the case of the present embodiment, the speaker device 100 includes a sound absorbing material 103, a first sound absorbing opening 131 (see FIG. 3), a second sound absorbing opening 132 (see FIG. 4), and a holding member 104. .

A first sound path body 111 that is a sound path body that guides sound in a predetermined direction has a first opening 113 that opens toward a room of the automobile 200 surrounded by the door 201 and the like on the inner surface of the door 201. A cylindrical member disposed inside the door 201. Similarly, the second sound path body 112 has a second opening 114 that opens toward the room of the automobile 200 surrounded by the door 201 and the like on the inner surface of the door 201 and is disposed inside the door 201. It is a cylindrical member.

In the case of the present embodiment, the first opening 113 of the first sound road body 111 and the second opening 114 of the second sound road body 112 are arranged close to each other, and the first sound road body 111 and the second sound path body 112 are arranged in plane symmetry. Here, the X-axis, Y-axis, and Z-axis in FIGS. 1 and 2 extend in directions perpendicular to each other. The Z-axis extends in a direction along the inner wall surface that is the inner surface of the door 201, and the X-axis extends in a direction intersecting the inner wall surface (the positive direction is the direction toward the inside of the door 201).

FIG. 3 is a perspective view showing the first sound path body. FIG. 4 is a perspective view showing a second sound path body.

As shown in FIG. 3, the first sound path body 111 has a hollow triangular prism shape, includes a first hole 191 to which the first speaker unit 121 is attached, and is arranged so as to intersect the first opening 113. The plate-like first baffle portion 115 is disposed obliquely with respect to the first baffle portion 115 so that the distance gradually increases from the back side (X-axis positive side in the figure) to the first opening 113. And a plate-like first reflecting portion 117. The first reflecting portion 117 is provided with a first sound absorbing opening 131. As described above, as the first sound path body 111 moves from the first opening 113 to the back side (X-axis positive side in the drawing), the first opening 113 is located on the back side of the opening area of the first opening 113. The cross-sectional area parallel to is gradually narrowed. That is, the opening area in the first opening 113 of the first sound path body 111 is larger than the opening area inside the first sound path body 111.

The second sound path body 112 has a hollow triangular prism shape that is plane-symmetric with the first sound path body 111, includes a second hole 192 to which the second speaker unit 122 is attached, and intersects the second opening 114. The plate-like second baffle portion 116 arranged in such a manner and the second baffle portion 116 obliquely so that the distance gradually increases from the back side (X-axis positive side in the figure) to the second opening 114. And a plate-like second reflecting portion 118 disposed on the surface. Further, the second reflecting portion 118 is provided with a second sound absorbing opening 132. As described above, as the second sound path body 112 moves from the second opening 114 to the back side (X-axis positive side in the drawing), the second opening 114 is located on the back side of the opening area of the second opening 114. The cross-sectional area parallel to is gradually narrowed. The opening area in the second opening 114 of the second sound path body 112 is larger than the opening area in the second sound path body 112.

The first sound absorbing opening 131 is a hole connected to the sound absorbing material 103 (see FIG. 2), and the second sound absorbing opening 132 is also a hole connected to the sound absorbing material 103. The sound absorbing material 103 is disposed between the first sound path body 111 and the second sound path body 112. In the case of the present embodiment, the first reflecting portion 117 and the second reflecting portion 118 form a hollow triangular sound absorbing chamber facing away from the sound path body, and the sound absorbing chamber is located behind the sound absorbing chamber. A material 103 is arranged. The first sound absorbing opening 131 and the second sound absorbing opening 132 are disposed at positions close to the first opening 113 and the second opening 114, respectively, and are closer to the opening than the speaker unit attached to the baffle. Placed in position.

FIG. 5 is a graph showing frequency characteristics emitted by the speaker device according to the first embodiment. The horizontal axis represents the frequency of the emitted sound, and the vertical axis represents the sound pressure. Thus, by providing the sound absorbing material 103 in the speaker device 100 and providing the sound absorbing opening connected to the sound absorbing material 103, the resonance that occurs between the first opening 113 and the second opening 114 as shown in FIG. It is possible to suppress the peak and dip due to the phenomenon, particularly the peak and dip due to the resonance phenomenon in a high frequency band, and to eliminate the deterioration of the flatness of the frequency characteristics.

FIG. 6 is a cross-sectional view schematically showing the vicinity of the speaker unit.

As shown in FIG. 6, the first speaker unit 121 is attached with the first sound emitting surface 123, which is a surface that emits sound, facing the inside of the first sound path body 111. Similarly, the second speaker unit 122 is attached with the second sound emitting surface 124 facing inward of the second sound path body 112.

Here, the sound radiation surface is a so-called baffle surface. When the diaphragm is a cone type as in the present embodiment, the substantially conical shape portion of the diaphragm is the sound radiation surface, and the diaphragm is a plane. The surface of the diaphragm becomes a sound radiation surface.

The first speaker unit 121 includes a first vibration unit having a diaphragm 125 and a voice coil body 127. The second speaker unit 122 includes a second vibration unit having a diaphragm 126 and a voice coil body 128. The first speaker unit 121 and the second speaker unit 122 are arranged such that the first vibration direction axis 129 of the first vibration unit and the second vibration direction axis 120 of the second vibration unit coincide with each other. Here, the vibration direction axis indicates an axis passing through the center of the speaker unit and parallel to the vibration direction. In the case of the present embodiment, the first speaker unit 121 and the second speaker unit 122 are fixed by the holding member 104 that can maintain the above arrangement. Further, the holding member 104 may not be used, and the first sound path body 111 and the second sound path body 112 may be directly fixed.

In addition, the first speaker unit 121 is attached to the first hole 191 of the first baffle portion 115, and the second speaker unit 122 is attached to the second hole 192 of the second baffle portion 116.

In the case of the present embodiment, the speaker device 100 includes a sealed casing 105 (see FIG. 2) for forming an air chamber inside the door 201. The housing 105 is disposed between the inner wall surface and the outer wall surface that constitute the door 201, and functions as a cabinet of the speaker device 100.

Further, the first edge 141 of the first speaker unit 121 and the second edge 142 of the second speaker unit 122 are arranged so that the protruding directions of the edges are aligned. In the case of the present embodiment, the first edge 141 and the second edge 142 protrude in the negative Y-axis direction in the drawing. That is, the first edge 141 protrudes outward from the first sound emission surface 123, and the second edge 142 protrudes inward from the second sound emission surface 124.

Here, the edge is an annular member having a flexibility and a restoring property for holding the diaphragm so as to vibrate with respect to the frame.

By aligning the protruding directions of the edges of the first speaker unit 121 and the second speaker unit 122 that are arranged to face each other in this manner, the amount of air excluded at the edge due to vibration of the diaphragm is made constant and stabilized. Therefore, it is possible to improve acoustic characteristics such as reducing air distortion.

(Second Embodiment)
Next, a second embodiment of the speaker device 100 will be described. In addition, the same code | symbol may be attached | subjected to what has the effect | action and function similar to 1st Embodiment, and the same shape, mechanism, and structure (part), and description may be abbreviate | omitted. In the following description, differences from the first embodiment will be mainly described, and description of the same contents may be omitted.

FIG. 7 is a perspective view showing the speaker device according to the second embodiment in a transparent state.

As shown in FIG. 7, the first opening 113 of the first sound path body 111 and the second opening 114 of the second sound path body 112 of the speaker device 100 according to the present embodiment are integrally formed. . That is, the first opening 113 and the second opening 114 are formed as one opening. Further, the aspect ratio of the first sound emitting surface 123 of the first speaker unit 121 and the aspect ratio of the second sound emitting surface 124 of the second speaker unit 122 are directions along the inner wall surface that is the inner surface of the door 201. The length of the door 201 in the thickness direction is set to be shorter than the length in the Z-axis direction in the drawing (the X-axis direction in the drawing), that is, in the thickness direction of the door 201. That is, the length in the direction intersecting the inner wall surface of the first sound emitting surface 123 is shorter than the length in the direction parallel to the inner wall surface of the first sound emitting surface 123. The length of the second sound radiation surface 124 in the direction intersecting the inner wall surface is shorter than the length of the second sound radiation surface 124 in the direction parallel to the inner wall surface.

Thereby, even when the speaker device 100 is disposed in a thin wall portion such as the door 201, it is possible to dispose a large-diameter speaker unit.

The speaker unit is exemplified by an elliptical shape in which the major axis is along the Z-axis direction and the minor axis is along the X-axis direction (depth direction). However, a speaker unit having a different aspect ratio is rectangular. It is possible to employ a speaker unit having an arbitrary shape such as an elliptical shape. In addition, as a speaker unit having the same aspect ratio, not only a circular speaker unit but also a square speaker unit may be adopted.

(Third embodiment)
Next, a third embodiment of the speaker device 100 will be described. In addition, the same code | symbol may be attached | subjected to what has the effect | action and function similar to 1st, 2nd Embodiment, and the same shape, mechanism, and structure, and description may be abbreviate | omitted. In the following, differences from the first and second embodiments will be mainly described, and description of the same contents may be omitted.

FIG. 8 is a perspective view showing the speaker device according to the third embodiment in a transparent state.

As shown in FIG. 8, the first opening 113 of the first sound path body 111 and the second opening 114 of the second sound path body 112 of the speaker device 100 according to the present embodiment are arranged in a separated state. ing. The first sound path body 111 and the second sound path body 112 arranged in the separated state are provided with a first sound absorption opening 131 and a second sound absorption opening 132, respectively. The sound absorbing material 103 is disposed at a position corresponding to the second sound absorbing opening 132 (between the first sound path body 111 and the second sound path body 112).

Further, the speaker device 100 is arranged in parallel with the ZY plane in the drawing, which is a direction different from the first sound emitting surface 123 and the second sound emitting surface 124 arranged in parallel with the ZX plane in the drawing. A third speaker unit 163 having a three sound emission surface 153 is provided. The third speaker unit 163 is disposed between the first sound emission surface 123 and the second sound emission surface 124 (in the case of the present embodiment, in the center).

In addition, the speaker device 100 includes a port 164 that opens to the inside of the automobile 200 that is a moving body on the plane of the door 201, and includes a resonance duct 165 that is disposed in the door 201 and connected to the port 164. Yes. That is, the speaker device 100 is a bass reflex type speaker device.

According to the speaker device 100 according to the present embodiment, the two speaker units for the middle and low sound range having relatively large vibrations are arranged opposite to each other to cancel the vibrations, and the high directivity of the sound with relatively small vibrations. By disposing the speaker unit for the sound range toward the room of the moving body, it is possible to provide a speaker device with good acoustic characteristics while suppressing vibration. Further, by providing a phase inversion duct 165 having a port 164 that opens into the room for the moving body, the sound radiated from the opening of the sound path body and the sound path body on the opposite side. The phase of the sound generated from the speaker unit can be reversed and synthesized, and even in a small speaker device that is embedded in the wall of a moving body, it is possible to radiate rich mid-low range sounds It becomes.

According to the configuration of the present disclosure, since the pair of speaker units are arranged to vibrate in opposite directions (reverse phase), the occurrence of vibration is prevented even if the speaker device 100 is small and light. Further, since no vibration is generated in the speaker device 100, it is possible to emit a rich bass sound, and it is possible to provide the speaker device 100 having good sound quality characteristics.

Note that the present disclosure is not limited to the above embodiment. For example, another embodiment realized by arbitrarily combining the components described in this specification and excluding some of the components may be used as an embodiment of the present disclosure. Further, the present disclosure also includes modifications obtained by making various modifications conceivable by those skilled in the art without departing from the gist of the present disclosure, that is, the meanings of the words described in the claims. It is.

For example, the arrangement and orientation of the speaker units may be arranged in the same direction as shown in FIG. 9 as well as facing each other as in the above embodiment. In this case, generation of vibration can be suppressed by inputting a sound signal having an opposite phase. Further, it may be arranged in a back-to-back orientation as shown in FIG. In the configuration shown in FIGS. 9 and 10, the sound absorbing material is provided for each speaker unit. That is, the first sound absorbing material 133 is disposed so as to face the first speaker unit 121 via the first sound path body 111, and the second sound absorbing material 134 is disposed on the second speaker unit 122 and the second sound path body 112. It arrange | positions so that it may oppose through. Furthermore, although the case where the pair of speaker units are arranged horizontally has been described, the pair of speaker units may be arranged vertically or in other oblique directions.

In the first, second, and third embodiments, the case 105 has a rectangular parallelepiped shape. However, as shown in FIGS. Alternatively, a bottom having an elliptical columnar shape may be used. Thereby, it can be fitted into a portion to which an elliptical conventional type speaker unit is attached.

Also, a pair of speaker units may be housed in a pair of independent cabinets. In this case, each cabinet may be provided with a port and a duct. Even in this case, the pair of speaker units are held so that vibrations are transmitted to each other.

Further, although the speaker unit having a cone-shaped diaphragm has been described as an example, the speaker unit may be provided with a flat diaphragm. Further, the shape may be not only circular or elliptical but also rectangular.

In addition, although the sound road body has been described as a box-shaped member in which the baffle portion and the reflection portion, and the bottom portion and the top portion are integrated, the baffle portion and the reflection portion may be separate. In addition, the shape of the sound road body is not limited to a hollow triangular prism shape, and an arbitrary shape can be selected.

In addition, although the automobile is illustrated as the moving body and the door is illustrated as the wall portion, the wall portion to which the speaker device is attached is not only an operable wall portion such as a door, but also a fixed wall portion that does not operate. It doesn't matter. In addition, the moving body may be a train, a ship, an aircraft, or the like.

Also, the speaker device may be placed on the floor or suspended from the ceiling or the like. Furthermore, the speaker device may be placed on a desk, a shelf, or the like, and can be used like a conventional hi-fi type speaker device or AV (Audio-Visual) type speaker device. As the external shape of the speaker device, that is, the shape of the cabinet (housing), an arbitrary shape such as a shape using a rectangle or a curved surface can be adopted.

By using the above-described usage mode, vibration generated from the speaker device can be greatly reduced as compared with the conventional usage. Also, from the situation where a large space occupying area is required by two independent speaker devices required for a normal stereo type, the space occupying area can be reduced by sharing the cabinet of two speakers. Can be small. Furthermore, by making the cabinet shape with many curved surfaces, unnecessary resonance due to standing waves inside the cabinet can be reduced and good sound quality can be realized, and the design should also be good. Can do.

The present disclosure can be applied to a speaker device that reproduces an audio signal such as music, and particularly to a speaker device that generates sound in a state where it is embedded in a wall of an automobile, an aircraft, a ship, etc., in addition to home and leisure use. can do.

DESCRIPTION OF SYMBOLS 100 Speaker apparatus 103 Sound-absorbing material 104 Holding member 105 Housing | casing 111 1st sound path body 112 2nd sound path body 113 1st opening part 114 2nd opening part 115 1st baffle part 116 2nd baffle part 117 1st reflection part 118 Second reflector 120 Second vibration direction axis 121 First speaker unit 122 Second speaker unit 123 First sound radiation surface 124 Second sound radiation surface 125 Diaphragm 126 Diaphragm 127 Voice coil body 128 Voice coil body 129 First vibration Directional axis 131 First sound absorbing opening 132 Second sound absorbing opening 133 First sound absorbing material 134 Second sound absorbing material 141 First edge 142 Second edge 153 Third sound emitting surface 163 Third speaker unit 164 Port 165 Duct 200 Automotive 201 Door

Claims

A first sound path body having a first opening for emitting sound;
A first speaker unit that is attached with a first sound emitting surface, which is a surface emitting sound, facing inward of the first sound path body;
A second sound path body having a second opening for emitting sound;
A second speaker unit attached to a second sound emitting surface, which is a surface that emits sound, facing inward of the second sound path body, and
The first speaker unit and the second speaker unit include a vibration direction axis of a first vibration unit having a diaphragm and a voice coil body of the first speaker unit, a diaphragm and a voice coil body of the second speaker unit, A speaker device that is arranged so that a vibration direction axis of the second vibration unit having the same.
The speaker device is arranged in a wall portion surrounding a room in a moving body,
The first sound path body is disposed in the wall portion, and the first opening is provided in the wall portion and opens into the room,
The second sound path body is disposed in the wall portion, and the second opening portion is provided in the wall portion and opens into the room.
The speaker device according to claim 1.
A sound absorbing material disposed between the first sound path body and the second sound path body;
The first sound path body has a first sound absorbing opening connected to the sound absorbing material,
The second sound path body has a second sound absorbing opening connected to the sound absorbing material,
The speaker device according to claim 1 or 2.
The first sound-absorbing material arranged to face the first speaker unit via the first sound path body, and the first sound-absorbing material arranged to face the second speaker unit via the second sound path body A second sound absorbing material,
The first sound path body has a first sound absorbing opening connected to the first sound absorbing material,
The second sound path body has a second sound absorbing opening connected to the second sound absorbing material,
The speaker device according to claim 1 or 2.
The first opening and the second opening are integrally formed.
The speaker device according to any one of claims 1 to 4.
The opening area in the first opening of the first sound path body is larger than the opening area in the first sound path body, or the opening area in the second opening part of the second sound path body is , Larger than the opening area inside the second sound path body,
The speaker device according to any one of claims 1 to 5.
The first opening and the second opening are formed on the inner wall surface of the wall,
The length of the first sound emitting surface in a direction intersecting the inner wall surface is shorter than the length of the first sound emitting surface in a direction parallel to the inner wall surface, and the inner side of the second sound emitting surface The length in the direction intersecting the wall surface is shorter than the length in the direction parallel to the inner wall surface of the second sound emitting surface,
The speaker device according to any one of claims 2 to 6.
A third speaker unit having a third sound emitting surface in a direction different from the first sound emitting surface and the second sound emitting surface;
The speaker device according to any one of claims 1 to 7.
The third speaker unit is disposed between the first sound emitting surface and the second sound emitting surface.
The speaker device according to claim 8.
The speaker device according to any one of claims 1 to 9, wherein the edge of the first speaker unit and the edge of the second speaker unit are arranged so that the protruding directions of the edges are aligned.
The wall has a port opening in the room, and further includes a resonance duct disposed in the wall.
The speaker device according to any one of claims 2 to 10.
A cabinet that houses the first sound path body, the first speaker unit, the second sound path body, and the second speaker unit;
The first opening and the second opening are formed on the front surface of the cabinet,
The length of the first sound emitting surface in the direction intersecting the front surface is shorter than the length of the first sound emitting surface in the direction parallel to the front surface, and intersects the front surface of the second sound emitting surface. The length in the direction to be shorter than the length in the direction parallel to the front surface of the second sound emitting surface,
The speaker device according to claim 1.
A cabinet that houses the first sound path body, the first speaker unit, the second sound path body, and the second speaker unit;
The cabinet has an opening port, and further includes a resonance duct disposed in the cabinet.
The speaker device according to claim 1.