JP2010081441A - Speaker instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel form of a speaker instrument having excellent characteristics. <P>SOLUTION: The speaker instrument containing a plurality of speaker units stored in a cabinet has the cabinet of a baffle surface 101a made of curved surface projecting outside with a given curvature. In addition, diaphragms 120L, 120R included in each speaker unit also have shapes projecting outside with a curvature almost same as the curvature of the baffle surface 101a, and the diaphragms 120L, 120R are exposed on the baffle surface 101a so that the diaphragms and the baffle surface form a curved surface shape with a nearly continuous curvature. Thus, since both of the baffle surface and the plurality of diaphragms in the speaker instrument have curved surface shapes with almost same curvature, sound output by means of vibrations of the plurality of diaphragms may be provided efficiently and a frequency characteristic and directional characteristics can be improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a speaker device for reproducing high-fidelity audio, which is configured by storing a speaker unit in a speaker box.

  Conventionally, a speaker device for high-fidelity audio reproduction has a configuration shown in FIG. 16, for example. That is, the speaker units 3 and 4 are arranged on the baffle plate 2 on the front surface of the square speaker box 1. As each of the speaker units 3 and 4, for example, the speaker unit 3 is a unit that reproduces a mid-low range sound, and the speaker unit 4 is a unit that reproduces a high range sound. The diaphragm provided in the speaker unit 3 that reproduces the mid-low range sound is, for example, a cone-type diaphragm. The speaker unit 4 that reproduces the high frequency sound is, for example, a dome-shaped diaphragm.

The speaker box 1 is made by combining, for example, wood, and a box having a size corresponding to the speaker units 3 and 4 to be used is used. The baffle plate 2 is also usually a flat plate. Patent Document 1 describes an example of this type of speaker device.
JP 2006-174077 A

By the way, various improvements have been made to improve the sound quality of a speaker device in which a cone-shaped speaker unit is housed in a widely used rectangular speaker box. It is a shape that is recessed in the box, and because of the recessed shape, the spread of the sound output from the speaker device is not necessarily a natural state. Specifically, because there is a depression from the baffle surface due to the cone-shaped diaphragm, there is degradation of on-axis characteristics and directivity characteristics due to diffraction effects.
Also, since the shape of the speaker box itself is square, the state of sound transmission in the box cannot be said to be uniform, and there is a problem that the characteristics are deteriorated. That is, reflection of sound from the end of the baffle and reflection inside the cabinet brought unnecessary sound, which deteriorated the sound.

  The present invention has been made in view of these points, and an object thereof is to provide a speaker device having a novel shape with excellent characteristics.

  According to the present invention, in a speaker device configured by housing a plurality of speaker units in a cabinet, the baffle surface of the cabinet is a curved surface protruding outward with a predetermined curvature. Then, each diaphragm included in the speaker unit has a shape protruding outward with substantially the same curvature as that of the baffle surface, and the plurality of diaphragms are exposed from different positions on the baffle surface, so that the substantially continuous curvature is obtained. It is arranged so as to have a curved surface shape.

  According to the present invention, since both the baffle surface of the speaker device and the plurality of arranged diaphragms have curved surfaces with substantially the same curvature, sound can be output efficiently due to vibration of the diaphragm, and the frequency Characteristics and directivity can be improved.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
1 to 3 are perspective views showing the external shape of a speaker device according to an example of the present embodiment. 1 is a perspective view of the front side, FIG. 2 is a perspective view seen from an oblique left side, and FIG. 3 is a view seen from the top. FIG. 4 is a longitudinal sectional view of the speaker device according to the example of the present embodiment. FIG. 5 is a perspective view showing a single speaker unit included in the speaker device according to the example of the present embodiment.

  The configuration will be described in order with reference to these drawings. In this embodiment, as shown in FIGS. 1 and 2, an egg-shaped spherical speaker box 101 is used as a cabinet as the speaker device 100. To configure. The oval shape is an example, and other spherical shapes may be used. For example, it may be a perfect sphere. FIG. 3 is a diagram showing the position of the vertex t shown in FIG. 1 as the center.

  The egg-shaped spherical speaker box 101 is made of, for example, wood or synthetic resin. In the example of FIGS. 1 and 2, the speaker box 101 that is oval in an oval shape is in an upright state. Various sizes can be applied as the size of the speaker box 101. For example, the height is about 20 cm. In the example of FIGS. 1 and 2, the bottom of the speaker box 101 is also circular, and it is difficult to stand upright as it is, but a leg (not shown) is attached to the bottom, or outside the bottom of the speaker box 101. It is good also as a shape which can be installed in an upright state easily.

  A baffle portion 101a for arranging two speaker units 110 (FIG. 4) is formed on the side surface of the egg-shaped speaker box 101, and through holes 101b for speaker unit placement are provided in each baffle portion 101a. It is provided. However, in the case of this example, since the speaker box 101 is integrally formed in an egg shape, the two baffle portions 101a are in a state of being integrally connected to other portions of the speaker box 101. One baffle portion 101a and other portions are continuous with curved surfaces having substantially the same curvature. The through holes 101b of the two baffle portions 101a are arranged at positions 180 degrees apart from each other as shown in a state viewed from the upper surface in FIG. Each baffle portion 101a may be configured separately from other portions of the speaker box 101. In the example of FIG. 1, the through hole 101b is arranged at a position slightly below the center.

As shown in FIG. 1, diaphragms 120L and 120R of the speaker unit 110 are disposed in the through holes 101b of the respective baffle portions 101a. Each of the diaphragms 120L and 120R has a size slightly smaller than the through hole 101b.
In the case of this example, the baffle portion 101a itself is an oval three-dimensional curved surface, but the surfaces of the respective diaphragms 120L and 120R are also curved continuously with the respective baffle portions 101a. In addition, a three-dimensional curved surface having substantially the same curvature as each of the baffle portions 101a is formed. Therefore, in the assembled state as shown in FIG. 1, a continuous curved surface is formed by the baffle portion 101a and the diaphragms 120L and 120R, and the space between each of the diaphragms 120L and 120R and each baffle portion 101a. In addition, the groove is annularly arranged. In FIG. 2, one of the two diaphragms 120 </ b> L and 120 </ b> R is shown by a broken line in a state where the diaphragm 120 </ b> R is hidden on the back side.
The spaces in the speaker box 101 on the back side of the diaphragms 120L and 120R of each speaker unit 110 are partitioned by walls 140 (see FIG. 4), and are configured not to interfere with each other.

Terminals (not shown) for supplying audio signals to the respective speaker units 110 are arranged at relatively inconspicuous positions such as the bottom of the egg-shaped speaker box 101, for example. The two speaker units 110 are supplied with the same audio signal to reproduce the same sound. When the same audio signal is supplied to the two speaker units 110, the same sound is spread and reproduced around 360 ° around the speaker device 100.
Alternatively, a left-channel audio signal is supplied to the speaker unit 110 having the left diaphragm 120L, and a right-channel audio signal is supplied to the speaker unit 110 having the right diaphragm 120R to provide two-channel audio. Stereo reproduction by signals may be performed. In the case of a configuration for performing stereo reproduction using the two-channel audio signal, the left channel sound spreads on the left side of the position where the speaker device 100 is disposed, and the right channel sound spreads on the right side of the position where the speaker device 100 is disposed. Two-channel stereo reproduction can be satisfactorily performed around the position where the speaker device 100 is disposed.

Next, an example of the internal configuration of the speaker device 100 according to the present embodiment will be described with reference to FIG. The interior of the speaker box 101 is partitioned by a partition 140 so that an individual space is formed for each position where each speaker unit 110 is disposed. Different speaker units 110 are arranged in the through holes 101b of the two baffle portions 101a of the speaker box 101, respectively. As shown in FIG. 5, each speaker unit 110 is configured by arranging each member inside a metal circular frame 111.
As shown in the sectional view of FIG. 4, each speaker unit 110 has a magnetic circuit 112 including a magnet 112 a and a yoke 112 b arranged at the center of the frame 111, and a gap between the magnetic circuits 112. The voice coil 113a wound around the coil bobbin 113 is disposed adjacent to 112c. The voice coil 113a is configured to be supplied with an audio signal from a terminal (not shown) of the speaker device via a signal line, and the coil bobbin 113 vibrates in accordance with the supplied audio signal.

  A diaphragm 120L or 120R is attached to the tip of the coil bobbin 113. In the example of FIG. 4, a reinforcing material 115 is attached to a connection portion between the coil bobbin 113 and the diaphragm 120 </ b> L or 120 </ b> R. As described above, the diaphragm 120 has a curved surface shape that is continuous with the shape of the speaker box 101, and the edge portion 121 of the diaphragm 120 is connected to the outer peripheral portion 111 a of the frame 111 via the connection member 116. . The coil bobbin 113 is connected to the frame 111 via a damper 114.

  As shown in FIG. 4, the diaphragms 120L and 120R attached to each speaker unit 110 have a curved surface shape with the same curvature as that of the baffle portion 101a from the position where the side surface portion 122 slightly rises from the edge portion 121 and rises. In order to become, it is in a state where it is slightly curved and protrudes. The diaphragms 120L and 120R having such shapes can be made of various materials, for example, by cutting out wood or by resin molding. Each speaker unit 110 shown in FIG. 5 is configured as a so-called full-range speaker unit that reproduces a low frequency sound to a high frequency sound. However, in a later-described modification (example in FIG. 15), a high frequency sound is reproduced from another unit.

Returning to the description of FIG. 4, the outer peripheral portion 111 a of the frame 111 of each speaker unit 110 is attached to the back surface of the baffle portion 101 a of the speaker box 101 via a damping material 117.
Although not shown in the figure, a sound absorbing material may be disposed at a substantially central position inside the egg-shaped speaker box 101.

  With this arrangement, the diaphragms 120L and 120R arranged at two locations on the side surface of the speaker unit 110 are curved surfaces integrated with the entire curved surface of the speaker box 101, as shown in FIGS. Will be placed. Further, as shown in FIG. 4, the diaphragms 120L and 120R have a shape in which the side part 122 rises slightly from the edge part 121, so that only the diaphragm 120 can be seen in the baffle part 101a, and the frame outer peripheral part 111a and the like are It becomes a hidden shape.

The speaker device 100 according to the present embodiment configured as described above has excellent characteristics. That is, the following effects are obtained.
1) Little diffraction effect.
2) No characteristic deterioration due to the depression.
3) The peak dip is reduced in the directivity, which is good.
4) Since a secondary sound source due to diffraction and depression effects is not generated, the sound resolution is improved.
5) Sound quality is improved because standing waves are difficult to reach in the cabinet.
6) Since the shape of the sound source (diaphragm) and the cabinet resemble the relationship between the mouth and head shape in humans, the system is excellent in sound reproduction.
7) Since the cabinet shape has a strong shape, cabinet vibration is reduced and sound quality is improved.
8) Sound quality is improved because the structure is such that specific vibrations are difficult to occur in both standing waves and cabinet vibrations.

  The effect that the diffraction effect is small is generated at the end (corner) of the baffle when the speaker unit 110 and each of the diaphragms 120L and 120R is an egg-shaped continuous sphere, and is a conventional square baffle. This is because the diffraction effect is reduced. Unlike the conventional cone-type diaphragm, there is no characteristic deterioration due to the depression because there is no depression from the baffle and the curved plate has a shape in which the diaphragm and the baffle are continuous with substantially the same curvature. The same applies to the improvement of directivity. Since the shape of the sound source (diaphragm) and the cabinet resembles the relationship between the mouth and head shape in humans, the point that it becomes an excellent system for sound reproduction is, for example, as an egg-shaped speaker box with a height of about 20 cm When configured, the speaker box (cabinet) has a shape that approximates the human head, a state similar to the relationship between the mouth and head shape of a human, and a sound output state similar to that of a human speaking It is because it becomes.

  In addition, when configured as an egg shape as in the present embodiment, the focal point is focused almost at the center in the cabinet instead of the internal standing wave (although the egg shape is not a perfect sphere, the focus is slightly dispersed) ) By arranging the sound absorbing material at the center position, the internal sound can be effectively absorbed. In the case of a conventional rectangular speaker box, when a sound absorbing material is disposed in order to prevent a standing wave or the like, a relatively large amount of the sound absorbing material needs to be disposed along the back surface of the cabinet or the like. However, in the case of this example, only a relatively small amount of the sound absorbing material is arranged near the center position corresponding to the focal position, so that the sound collected at the center position in the cabinet is effectively absorbed and reduced. High effect can be obtained with a large amount of sound absorbing material.

In the case of the speaker device according to the present embodiment, the two speaker units 110 are arranged at positions different by approximately 180 ° so that sound is reproduced with substantially uniform characteristics around 360 ° around the speaker device 100. Become.
FIG. 6 is a diagram showing the directivity characteristics of 360 ° on the horizontal plane of the sound output from one speaker unit 110 of the speaker device of the present embodiment in each frequency band, and 0 ° is the front. FIG. 6A is an example of the present embodiment, and FIG. 6B is an example in which a cone-shaped speaker unit is used in the conventional box-shaped speaker box shown for comparison. Each numerical value shown in FIG. 6 is a frequency value, and 1000 Hz, 2000 Hz, 7000 Hz, and 20000 Hz are shown here. 1000 Hz is indicated by a solid line, 2000 Hz is indicated by a broken line, 7000 Hz is indicated by a one-dot chain line, and 20000 Hz is indicated by a two-dot chain line.
In the case of the conventional speaker device shown in FIG. 6 (b), there is a considerable level drop on the back side as the frequency increases, and a large lower bell drop as the frequency rises even at an angle of 90 ° from the front. I understand that there is. On the other hand, in the case of the speaker device of the present embodiment shown in FIG. 6A, it can be seen that a substantially uniform level is maintained up to the high range in a range exceeding ± 90 ° from the front.
Accordingly, by arranging the two speaker units 110 at positions different by 180 ° as shown in FIGS. 1 to 4, the sound output from the diaphragm 120L or 120R of each speaker unit 110 is ± 90 from the front. The sound is in the range of 0 °, and a sound with good frequency characteristics can be heard for a person at any angular position with respect to the speaker device.
As described above, when the same audio signal is supplied to the two speaker units 110, it is possible to hear the same sound for listeners at any angular position. In addition, when two channels of stereo audio signals are supplied to the two speaker units 110, it is possible to hear the sound of the channel corresponding to the position.

Next, examples of other embodiments of the present invention will be described in order with reference to FIG. In FIG. 7 and subsequent figures, the same reference numerals are given to the portions corresponding to FIG. 1 to FIG. 6 described as examples of the embodiment.
First, with reference to FIG.7 and FIG.8, the other example of the attachment state of the diaphragm of the speaker unit to the baffle part 101a of the speaker apparatus 100 which has the egg-shaped spherical speaker box 101 is shown. FIG. 7 is a perspective view, and FIG. 8 is a cross-sectional view.
In the speaker device 100 of the example of FIGS. 7 and 8, as shown in FIG. 7, protruding ribs 123 are provided annularly on the edge portions of the diaphragms 120 </ b> L and 120 </ b> R. Then, as shown in cross section in FIG. 8, the edge of the rib 123 is connected to the edge of the frame 111 of the speaker unit 110, and the edge of the frame 111 is adhered to the edge of the through hole 101b. It is set as the structure attached to the baffle part 101a. Other parts are configured in the same manner as the speaker device 100 of FIG.

  In the case of the speaker device 100 shown in FIGS. 7 and 8, as shown in FIG. 7, the protruding rib 123 exists between the diaphragms 120 </ b> L and 120 </ b> R and the baffle portion 101 a. The protruding amount of the rib 123 is small, and the good characteristic of the spherical shape of the entire speaker device is not impaired, and good directivity characteristics similar to the case of the speaker device of FIG. 1 can be obtained.

  Next, an example in which three speaker units 110 are arranged will be described with reference to FIGS. 9 and 10. FIG. 9 is a view from the front, and FIG. 10 is a view from the top. 9 and 10, t indicates the apex of the egg-shaped spherical speaker box 101, and FIG. 10 shows the apex as the center.

  In this example, as shown in FIG. 10, three baffle portions 101a are evenly arranged at intervals of 120 ° on the side surface of the speaker device 100 having an egg-shaped spherical speaker box 101, and each baffle portion 101a is arranged. Is provided with a through hole 101b. The space in the speaker box 101 on the back side of each baffle portion 101a is a space partitioned individually so that the speaker units 110 do not interfere with each other. Different speaker units 110 are disposed in the respective through holes 101b so that the three diaphragms 120X, 120Y, and 120Z can be accommodated in the through holes 101b. In FIG. 9, two diaphragms 120X and 120Y are visible, and the diaphragm 120Z on the back side is indicated by a broken line.

  By arranging the diaphragms 120X, 120Y, and 120Z of the three speaker units in this way, sound is output in three directions from the side of the egg-shaped spherical speaker box 101. A sound with good frequency characteristics can be heard for a person at any angular position around the. That is, as shown in FIG. 6 which has already been described, the frequency characteristic of sound output from one diaphragm is good in a wide angle range by being configured as the speaker device of this example. Thus, compared with the case where two speaker devices are provided at an interval of 180 °, the frequency characteristics can be used in a better angle range, and the characteristics as a speaker device can be improved.

  The same audio signal is supplied to all the speaker units that drive the three diaphragms 120X, 120Y, and 120Z. Or it is good also as a structure which supplies the audio signal of multiple channels.

  Next, referring to FIGS. 11 and 12, two speaker units 110 are arranged, and the arrangement state of the diaphragms 120L and 120R of the two speaker units 110 is changed from the example of FIG. Will be described. FIG. 11 is a view from the front, and FIG. 12 is a view from the top. 11 and 12, t indicates the vertex of the egg-shaped spherical speaker box 101, and FIG. 12 shows the vertex as a center.

  In this example, as shown in FIG. 12, two baffle portions 101a are arranged on the side surface of a speaker device 100 having an egg-shaped spherical speaker box 101 at intervals shorter than 180 ° (for example, intervals of 120 °). Thus, a through hole 101b is provided in each baffle portion 101a. Different speaker units 110 are arranged in the respective through holes 101b so that the two diaphragms 120L and 120R can be accommodated in the through holes 101b. The space in the speaker box 101 on the back side of each baffle portion 101a is a space partitioned individually so that the speaker units 110 do not interfere with each other.

  As described above, by arranging the diaphragms 120L and 120R of the two speaker units close to each other, sound is output from the egg-shaped spherical speaker box 101 with a certain frequency characteristic direction. That is, for example, a left channel audio signal is output from the diaphragm 120L, and a right channel audio signal is output from the diaphragm 120R, so that the person facing the front of the speaker box 101 (the surface shown in FIG. 11) is directed. On the other hand, it becomes possible to hear the audio of both the left and right channels with good frequency characteristics. The same audio signal may be supplied to the speaker units that drive the two diaphragms 120L and 120R.

  Next, an example in which five speaker units 110 are arranged will be described with reference to FIGS. 13 and 14. FIG. 13 is a view from the front, and FIG. 14 is a view from the top. 13 and 14, t indicates the apex of the egg-shaped spherical speaker box 101, and FIG. 14 shows the apex as the center.

  In this example, as shown in FIG. 13, five baffle portions 101a are arranged on the side surface of the speaker device 100 having an egg-shaped spherical speaker box 101, and through holes 101b are provided in the respective baffle portions 101a. . Separate speaker units 110 are arranged in the five through holes 101b so that the five diaphragms 120L, 120R, 120C, 120RL, and 120RR are accommodated in the through holes 101b. In FIG. 13, the three diaphragms 120L, 120R, and 120C are visible, and the rear diaphragms 120RL and 120RR are indicated by broken lines. As can be seen from FIG. 13, the five diaphragms 120L, 120R, 120C, 120RL, and 120RR are not arranged at equal intervals in this example, but five may be arranged at equal angular positions. The space in the speaker box 101 on the back side of each baffle portion 101a is a space partitioned individually so that the speaker units 110 do not interfere with each other.

  By arranging the diaphragms 120L, 120R, 120C, 120RL, and 120RR of the five speaker units in this way, sound is output in five directions from the side surface of the egg-shaped spherical speaker box 101. Thus, it is possible to hear a sound having a good frequency characteristic for a person at any angular position around the speaker box 101.

The speaker units that drive the five diaphragms 120L, 120R, 120C, 120RL, and 120RR may be either supplied with the same audio signal or supplied with multiple channels of audio signals.
When supplying a multi-channel audio signal, for example, the left front channel audio signal is output from the diaphragm 120L, the right front channel audio signal is output from the diaphragm 120R, and the center channel audio signal is output from the diaphragm 120C. The signal is output, the left rear channel audio signal is output from the diaphragm 120RL, and the right rear channel audio signal is output from the diaphragm 120RR.

  In this way, by outputting the signals of 5 channels from the diaphragms of different speaker units, it is possible to output sound suitable for each direction in five directions using one speaker device 100. Multi-channel audio can be satisfactorily reproduced by only one speaker device 100.

Next, an example in which each speaker unit has a two-way configuration will be described with reference to FIG. The example of FIG. 15 is an example in which the diaphragms 120L and 120R of the two speaker units 110 are arranged at approximately 180 ° intervals, as in the example of FIG. In this example, the tweeter speaker units 130L and 130R for reproducing high-frequency sounds are arranged above the vibration plate 120L and 120R arrangement positions of the baffle portions 101a. Accordingly, the tweeter speaker units 130L and 130R are also arranged at intervals of approximately 180 °. In this case, low-frequency and middle-frequency sounds are output from the diaphragms 120L and 120R, and high-frequency sounds are output from the tweeter speaker units 130L and 130R.
When supplying a 2-channel audio signal, a speaker unit that drives the diaphragm 120L and a tweeter speaker unit 130L, supplies a left channel audio signal and drives the diaphragm 120R, and a tweeter The right channel audio signal is supplied to the speaker unit 130R.
Since each of the plurality of speaker units arranged in this way has a two-way configuration with a high frequency band and a band other than that, a speaker unit having excellent frequency characteristics can be used. It can be.
In the example of FIG. 15, the speaker device of FIG. 1 has a two-way configuration, but the speaker devices of the configurations of FIGS. 9, 11, and 13 may similarly have a two-way configuration.

  In the embodiment described so far, the vibration plate and the baffle have been described as a curved surface shape that is continuous with substantially the same curvature. However, the curved surface shape that is continuous with substantially the same curvature here is not necessarily the vibration plate and the baffle. It does not mean that the curvatures of are the same. In the case of the present invention, as can be seen from the above description, when the speaker device is viewed from the surface, it means that the diaphragm and the baffle are curved surfaces that appear to be continuous. There is no problem even if they are different. Moreover, in the example of FIGS. 1-4, although the diaphragm was arrange | positioned in the location of the curved surface (large curvature) of the curvature of an egg-shaped speaker box, a through-hole is formed in the egg-shaped vertex part (for example, the upper side of FIG. 1). And a diaphragm may be disposed in the through hole. In this case, the diaphragm has a smaller curvature than the baffle portion, but such a shape is also included in the curved surface shape having the same curvature in the present invention.

It is a perspective view of the front side which shows the example of the speaker apparatus by one embodiment of this invention. It is a perspective view of the diagonal left side of the speaker apparatus by one embodiment of this invention. It is the top view which looked at the speaker apparatus by one embodiment of this invention from the upper surface. It is sectional drawing which shows the example of the speaker apparatus by one embodiment of this invention. It is a perspective view which shows the example of the speaker unit by one embodiment of this invention. It is the characteristic view which showed the example (a) of the directional characteristic of the speaker apparatus by one embodiment of this invention, and the example (b) of the conventional directional characteristic. It is a perspective view of the front side which shows the example (example which connected the edge directly) of the speaker apparatus by other embodiment of this invention. It is sectional drawing of the example of FIG. It is a perspective view of the front side which shows the example (example of three units) of the speaker apparatus by other embodiment of this invention. It is the top view which looked at the speaker apparatus of the example of FIG. 9 from the upper surface. It is a perspective view of the front side which shows the example (example which approached two units) of the speaker apparatus by other embodiment of this invention. It is the top view which looked at the speaker apparatus of the example of FIG. 11 from the upper surface. It is a perspective view of the front side which shows the example (example of five units) of the speaker apparatus by other embodiment of this invention. It is the top view which looked at the speaker apparatus of the example of FIG. 13 from the upper surface. It is a perspective view of the front side which shows the example (example of 2 way structure) of the speaker apparatus by other embodiment of this invention. It is a perspective view which shows the structural example of the conventional speaker apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Speaker apparatus, 101 ... Speaker box, 101a ... Baffle part, 101b ... Through-hole, 110, 110 ... Speaker unit, 111 ... Frame, 111a ... Frame outer peripheral part, 112 ... Magnetic circuit, 112a ... Magnet, 112b ... York, 112c ... Gap, 113 ... Coil bobbin, 113a ... Voice coil, 114 ... Damper, 115 ... Reinforcing material, 116 ... Connecting member, 117 ... Damping material, 120C, 120L, 120R, 120RL, 120RR, 120X, 120Y, 120Z ... Vibration Plate 121: Edge portion 122 ... Side surface portion 123 ... Rib 130L, 130R ... Tweeter speaker unit 140 ... Partition

Claims (3)

In a speaker device configured by storing a plurality of speaker units in a cabinet,
The cabinet baffle surface is a curved surface protruding outward with a predetermined curvature,
Each of the diaphragms included in the plurality of speaker units has a shape protruding outward with substantially the same curvature as the predetermined curvature,
The speaker device, wherein the plurality of diaphragms are exposed from different positions on the baffle surface so as to have a curved surface shape having a substantially continuous curvature. The speaker device according to claim 1, wherein
The speaker device is characterized in that the entire speaker box to which the baffle surface is attached has a spherical shape as a curved surface continuous with the curved surface of the baffle surface. The speaker device according to claim 1, wherein
A speaker device characterized in that stereo sound is reproduced by supplying audio signals of different channels to the respective speaker units composed of the plurality of diaphragms.

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