JP7352808B2 - Panel materials and panel material aggregates - Google Patents

Description

The present invention relates to panel materials, and more particularly to improvements in panel materials that can be detachably attached to a construction surface.

In general, a speaker device is installed in an indoor space such as a store, office, or public facility used by a large number of people, and a speaker device is installed to make in-house announcements, disaster prevention announcements, or provide BGM (Back Ground Music). However, the installation of such a speaker device has the problem of detracting from the aesthetics (design) of the indoor space or reducing the space utilization efficiency. Furthermore, an installation method in which an opening is provided in a ceiling, a wall, or an interior material thereof, and a speaker device is embedded in the opening is also widely adopted. In this case, the problem of space utilization can be solved, but the problem of aesthetics cannot be solved.

Therefore, a possible solution is to make the building's interior material itself function as a speaker device. For example, if the interior panel material attached to the wall inside the building is made into a flat speaker, there is no need to separately install a speaker device in the indoor space, and the problem of the aesthetic appearance being spoiled by the installation of the speaker device can also be solved.

Various proposals have been made regarding flat speaker technology (for example, Patent Document 1). In the flat speaker described in Patent Document 1, an excitation device called an exciter is attached to the center of the panel. The exciter is composed of a magnetic circuit and a voice coil, and vibrates when these move relative to each other in response to an electric signal. When this vibration is transmitted to the panel, it emits sound. Therefore, by attaching an exciter to the back of the panel, the problem of spoiling the appearance can be solved.

However, flat speakers have a problem in that the sound quality is poor and it is difficult to maintain a constant sound quality. In a typical speaker unit such as a cone-shaped speaker, the diaphragm acts as a rigid body and moves in translation in the front-rear direction. In contrast, in a flat speaker, the vibration of the exciter propagates from the center of the panel to the periphery, causing the panel to flex. Therefore, there was a problem in that it was difficult to improve the sound quality compared to a general speaker unit.

In particular, flat speakers have a problem in that it is difficult to ensure sufficient sound pressure in the high frequency range. For example, Patent Document 2 describes a flat speaker in which a tweeter, a squawker, and a woofer exciter are attached to different positions on the same panel. Although this planar speaker divides the area on the panel and associates it with different sound ranges, they are all still planar speakers, and it is thought that there is a limit to the improvement in sound quality.

Here, we have discussed the problems when trying to make the interior material of a building function as a speaker device, but exactly the same problems arise when trying to make the exterior material of a building, the interior material of a vehicle, etc. function as a speaker device. .

Japanese Patent Application Publication No. 11-331966 Japanese Patent Application Publication No. 2004-005511

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a panel material having an audio output function. In particular, it is an object of the present invention to provide a panel material that enables audio output without impairing its aesthetic appearance. Another object of the present invention is to provide a panel material that enables audio output without reducing space utilization efficiency.

Another purpose is to improve the sound quality of panel materials that have an audio output function. In particular, the purpose is to improve the sound quality in the high frequency range of a panel material having an audio output function. Another purpose is to widen the range of sounds that can be output in panel materials that have an audio output function.

The panel material according to the first embodiment of the present invention is removably attached to the construction surface, and is arranged on the construction surface so that a gap is formed between adjacent panel materials, a front panel arranged along the construction surface and forming a back space between the construction surface and the construction surface; The device includes an exciter and a speaker unit provided in the back space and for emitting sound through the gap.

By adopting such a configuration, it is possible to vibrate the front panel and output sound in the forward direction, so that sound can be emitted from the panel material without reducing the efficiency of space use or spoiling the aesthetics. Output can be performed. In addition, by outputting the sound from the speaker units installed in the rear space of the front panel through the gap between the front panels, it is possible to reduce the amount of noise from the panel material without reducing space utilization efficiency or spoiling the aesthetics. Audio output can be performed. Furthermore, by combining a flat speaker using the front panel with a speaker unit installed in the rear space of the front panel, the usable sound range can be expanded.

In the panel material according to the second embodiment of the present invention, in addition to the above configuration, an audio signal for a low frequency range is input to the exciter, and an audio signal for a high frequency range is input to the speaker unit. It is configured as follows.

By employing such a configuration, low-frequency sounds are output from the flat speaker using the front panel, and high-frequency sounds are output from the speaker unit. Therefore, it is possible to use different audio output means depending on the sound range, and to output sound with good sound quality and sound pressure over a wide sound range.

In addition to the above configuration, the panel material according to the third embodiment of the present invention is provided such that the speaker unit is arranged at a position closer to the periphery of the front panel than the exciter, and the sound emitting surface thereof is arranged around the periphery of the front panel. It is facing the veranda.

By adopting such a configuration, the speaker unit is placed near the periphery of the front panel with the sound emitting surface facing toward the periphery, making it possible to shorten the distance from the sound emitting surface to the periphery of the front panel. can. Therefore, attenuation on the path from the sound emitting surface to the periphery of the front panel can be suppressed, and the sound pressure output from the gap between the front panels can be increased.

In addition to the above structure, the panel material according to the fourth embodiment of the present invention includes a frame attached to the back surface of the front panel and surrounding the exciter, and the speaker unit is supported by the frame.

By adopting such a configuration, the strength of the front panel can be improved by the frame, and the front panel in the area within the frame surrounded by the frame can be used as a diaphragm. Furthermore, by supporting the speaker unit with the frame, the speaker unit can be placed near the periphery of the front panel.

In addition to the above configuration, the panel material according to the fifth embodiment of the present invention includes a throat that forms a sound wave path extending from the speaker unit toward the periphery of the front panel.

By adopting such a configuration, it is possible to suppress attenuation on the path from the speaker unit to the periphery of the front panel, and it is possible to increase the sound pressure output from the gap between the front panels.

In addition to the above configuration, the panel material according to the sixth embodiment of the present invention includes an input opening in which the throat faces the sound emitting surface of the speaker unit, and into which sound from the speaker unit is input; and an output aperture oriented in the same direction as the front side of the panel for outputting the sound.

By adopting such a configuration, it is possible to suppress the attenuation of sound pressure on the path from the speaker unit to the output opening of the throat that wraps around the periphery of the front panel, so that the sound pressure is not output from the gap between the front panels. The sound pressure can be increased. Moreover, the sound of the speaker unit can be output toward the front of the panel material.

In addition to the above configuration, the panel material according to a seventh embodiment of the present invention is provided such that the throat is bent so as to go around a straight portion extending from the input opening along the front panel and an edge of the front panel. , and a bent portion leading to the output opening.

By adopting such a configuration, it is possible to form a sound wave path consisting of the shortest path from the speaker unit to the gap between the front panels, suppress the attenuation of sound pressure on the path, and reduce the distance between the front panels. The sound pressure output from the gap can be increased.

In addition to the above configuration, the panel material according to the eighth embodiment of the present invention is arranged such that the sound emitting surface of the speaker unit and the input opening of the throat are substantially perpendicular to the front panel.

By adopting such a configuration, it is possible to match the axial direction of the sound emitting surface of the speaker unit, the axial direction of the input opening of the throat, and the extending direction of the straight part of the throat, thereby reducing sound pressure attenuation. Can be suppressed.

In addition to the above configuration, the panel material according to the ninth embodiment of the present invention is such that the speaker unit is arranged obliquely with the sound emitting surface facing the peripheral edge side and the construction surface side of the front panel, and The output sound is reflected by the construction surface and is output forward from the front panel through the gap.

By adopting such a configuration, the output sound of the speaker unit can be reflected on the construction surface and output forward through the gap between the front panels. Therefore, it can be configured without using a throat and can be realized at low cost.

In addition to the above configuration, the panel material according to a tenth embodiment of the present invention includes a reflective surface forming an angle with respect to the construction surface, and the output sound of the speaker unit is reflected by the reflective surface and is transmitted through the gap. is configured so that it is output.

By employing such a configuration, it can be configured without using a throat and can be realized at low cost. Furthermore, compared to the case where the sound is reflected from the construction surface, the sound of the speaker unit can be output in the same direction as the front of the front panel or in a direction closer to the front panel.

According to the present invention, a panel material having an audio output function can be provided. In particular, it is possible to provide a panel material that allows audio output without impairing its aesthetic appearance. Furthermore, it is possible to provide a panel material that enables audio output without reducing space utilization efficiency.

Moreover, the sound quality of a panel material having an audio output function can be improved. In particular, the sound quality in the high frequency range of a panel material having an audio output function can be improved. Furthermore, in a panel material having an audio output function, the outputtable sound range can be expanded.

It is a figure showing an example of construction of panel material 1a according to Embodiment 1 of the present invention. FIG. 2 is a front view showing an example of the structure of the panel material 1a in FIG. 1. FIG. FIG. 2 is a right side view showing an example of the structure of the panel material 1a in FIG. 1. FIG. FIG. 2 is a rear view showing an example of the structure of the panel material 1a in FIG. 1. FIG. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2; 6 is an enlarged view showing an enlarged area A1 in FIG. 5. FIG. 6 is an enlarged view showing an enlarged area A2 in FIG. 5. FIG. FIG. 2 is a perspective view showing an example of the configuration of a throat 14. FIG. FIG. 2 is a front view showing an example of the configuration of the throat 14. FIG. FIG. 3 is a bottom view showing an example of the configuration of the throat 14. FIG. 10 is a sectional view showing a cut surface of the throat 14 taken along the line BB in FIG. 9. FIG. It is a front view showing one example of composition of panel material 1b according to Embodiment 2 of the present invention. FIG. 7 is a rear view showing an example of the configuration of panel material 1b according to Embodiment 2 of the present invention. FIG. 13 is a cross-sectional view taken along the line CC in FIG. 12; 15 is an enlarged view showing area A3 in FIG. 14; FIG. It is a figure showing another example of composition of panel material 1c according to Embodiment 3 of the present invention.

Embodiments of the present invention will be described below with reference to the drawings. In this specification, for convenience, an example will be described in which the front surface of the panel material faces in the horizontal direction, but this does not limit the posture when the panel material according to the present invention is used. Further, for convenience, an example of an interior panel material attached to the inner wall surface of a building will be described, but this does not limit the installation location or use of the panel material according to the present invention.

Embodiment 1.
(1) Example of construction of panel material 1a FIG. 1 is a diagram showing an example of construction of panel material 1a according to Embodiment 1 of the present invention. This figure shows a large number of panel members 1a attached to a wall inside a building. These panel materials 1a are two-dimensionally arranged so as to be aligned in the vertical direction and the left-right direction, respectively, and one surface is formed by a large number of panel materials 1a laid out.

The panel material 1a is a panel-shaped interior material used inside a building, and is used mainly for the purpose of improving the aesthetic appearance of the inside of the building. The panel material 1a has a flat front surface and a plate-like shape having a depth that is shorter than the size of the front surface. For example, the front surface is a thin rectangle with sides of 500 to 1000 mm and a depth of about 50 mm.

The construction surface 2 is a surface to which the panel material 1a is attached, and any surface within the building, for example, a wall surface, a ceiling surface, a floor surface, etc., can be used as the construction surface 2. The construction surface 2 is not limited to a surface on a building structure (framework), and, for example, an indoor partition other than the framework can also be used as the construction surface 2. The construction surface 2 may be any flat surface to which the panel material 1a can be attached, and its material may be concrete, gypsum board, wood, metal, resin, or the like. Note that the two or more panel members 1a may cover the entire construction surface 2, or may cover a part of the construction surface 2.

In this embodiment, a case will be described in which the panel material 1a is an interior panel material that forms interior surfaces such as walls, ceilings, and floors in a building. Not limited to things. For example, it may be an exterior panel material forming an exterior surface of a building such as an exterior wall or a soffit. It may also be used to form interior surfaces of vehicles such as automobiles, railway vehicles, ships, and aircraft.

Two or more panel materials 1a are arranged on the construction surface 2 so as to be adjacent to each other, and a predetermined gap (joint) is provided between the adjacent panel materials 1a. In the figure, a large number of panel materials 1a are laid out so as to be aligned vertically and horizontally, respectively. For this reason, each panel material 1a is adjacent to other panel materials 1a in any direction, up, down, left, or right, except for those arranged at the peripheral edge of the wall. Moreover, gaps are formed between adjacent panel members 1a in any direction.

(2) Structure of Panel Material FIGS. 2 to 7 are diagrams showing an example of the structure of the panel material 1a in FIG. 1. 2 to 4 are a front view, a right side view, and a rear view of the panel material 1a, and FIG. 5 is a sectional view taken along the line AA in FIG. 2, and FIGS. 5 is an enlarged view showing areas A1 and A2 in FIG. 5. FIG. Although only one panel material 1a is shown in FIGS. 3 and 4, FIGS. 2 and 5 to 7 show two or more panel materials 1a attached to the construction surface 2. It is shown.

The panel material 1a includes a front panel 10, a frame 11, an exciter 12, a speaker unit 13, a throat 14, and a mounting hook 15. Each member 11 to 15 other than the front panel 10 is installed on the back side of the front panel 10, and except for the output opening 142 of the throat 14, is hidden behind the front panel 10 and is not visible from the front side of the panel material 1a. Therefore, these members 11 to 15 do not impair the aesthetic appearance.

a) Front panel 10
The front panel 10 is a flat plate-shaped member that forms the front surface of the panel material 1a. For example, a flat plate with a thickness of about 5 mm is used as the front panel 10, with a decorative material made of various materials such as paper, resin, fabric, wood, metal, and ceramics attached to the front surface of a flat plate base material processed from resin or metal. . Although the illustrated front panel 10 is rectangular, the front panel 10 may have any shape, and may be a square, a rectangle, a triangle, a pentagon, or any other polygon. Further, the shape may include a curve.

The material of the front panel 10 may be paper, resin, wood, metal, ceramic such as glass or ceramics, or other various materials. Further, the structure of the front panel 10 may be either a single layer made of the same material or a laminate of two or more layers made of the same material or different materials. Furthermore, regarding the internal structure within the layers of the front panel 10, in addition to a solid uniform homogeneous structure, various structures such as a honeycomb structure, a foam having cells or cells inside, and a corrugated truss structure are used. Can be adopted. The material and structure of the front panel 10 are appropriately determined in consideration of acoustic characteristics, mechanical strength, price, etc.

In a state where the panel material 1a is attached to the construction surface 2, the front panel 10 becomes parallel to the construction surface 2. Further, the front panel 10 is spaced apart from the construction surface 2, and a space (back space) is formed between the front panel 10 and the construction surface 2.

Two or more panel members 1a are arranged such that a gap is formed between adjacent panel members 1a. A gap of 25 mm or less, for example 5 to 20 mm, is provided between adjacent front panels 10, and the output opening 142 of the throat 14 is arranged in this gap. Therefore, sound from the speaker unit 13 disposed on the back side of the front panel 10 passes through the sound wave path in the throat 14 and is output ahead of the front panel 10.

The front panel 10 also includes an intra-frame area 31 that is surrounded by the frame 11 and where the exciter 12 is arranged, and an area that is formed outside the frame 11 and includes the speaker unit 13 and the throat. 14 is formed.

b) Frame 11
The frame 11 is a support frame member that is attached to the back surface of the front panel 10 and improves the strength of the front panel 10. The frame 11 has a shape that is the same as or close to the outer shape of the front panel 10, and is arranged along the periphery of the front panel 10. Further, the frame 11 has an annular shape surrounding the intra-frame area 31 of the front panel 10. However, a part of the frame 11 is arranged so as to be set back from the periphery of the front panel 10, and a frame outside area 32 is formed between the frame 11 and the periphery of the front panel 10.

The illustrated frame 11 is constructed by connecting a plurality of frame members 11a to 11d. Each of the frame members 11a to 11d is a structure having a hollow rectangular cross section and a linearly extending shape. For example, the frame members 11a to 11d are manufactured by bending or extruding aluminum, and the frame 11 is obtained by joining the ends of these frame members 11a to 11d.

The frame members 11b to 11d are arranged adjacent to the periphery of the front panel 10, whereas the frame member 11a is arranged at a position set back inward from the periphery of the front panel 10, and is arranged adjacent to the periphery of the front panel 10. A frame outside area 32 is formed between the frame member 11a and the frame member 11a.

c) Exciter 12
The exciter 12 is an excitation device that vibrates the front panel 10, and together with the front panel 10 constitutes a flat speaker. The exciter 12 has a built-in magnetic circuit and voice coil (not shown), and the magnetic circuit and voice coil relatively move in the front-back direction and vibrate based on an audio signal input from the outside.

The exciter 12 is attached to the frame area 31 on the back side of the front panel 10. The exciter 12 is supported only by the front panel 10, and when the exciter 12 vibrates, the front panel 10 also vibrates, and sound is output forward. In other words, the in-frame area 31 of the front panel 10 functions as a diaphragm of the flat speaker.

Generally, the diaphragm of a flat speaker performs a bending motion. The front panel 10 also generates vibrations at the mounting position of the exciter 12, and this vibration propagates outward on the front panel 10. Due to this bending movement of the front panel 10, sound is output from the front panel 10. Therefore, it is desirable that the exciter 12 be placed near the center of the front panel 10. In particular, it is more desirable to arrange it near the center of the intra-frame region 31 where vibrations propagate efficiently.

d) Speaker unit 13
The speaker unit 13 is a device that outputs sound by the translational movement of a diaphragm, and a well-known speaker unit is used. For example, a cone-shaped speaker using a conical diaphragm is used. The speaker unit 13 has a built-in diaphragm, a magnetic circuit, and a voice coil (not shown), and the magnetic circuit and voice coil move relatively based on an external audio signal, causing the diaphragm to vibrate. At this time, the diaphragm generates sound by translating in the front-rear direction as a rigid body.

The speaker unit 13 is arranged in an outside frame area 32 of the rear space of the front panel 10 and is fixed to the front panel 10 or the frame 11. The speaker unit 13 has a circular sound emitting surface with a diameter of 30 to 50 mm, and is arranged so that the sound emitting surface intersects with the front panel 10 and the output sound is directed toward the peripheral edge of the front panel 10. In the figure, the sound emitting surface of the speaker unit 13 is arranged to be perpendicular to the front panel 10 and parallel to the nearest peripheral edge of the front panel 10.

e) Throat 14
The throat 14 is a means for forming a sound wave path for propagating the output sound of the speaker unit 13 to the front of the front panel 10. The throat 14 is a cylindrical body having an input opening at one end and an output opening at the other end, and can propagate sound waves from the input opening to the output opening through the internal space of the throat 14. The input opening of the throat 14 faces the sound emitting surface of the speaker unit 13, and the output opening of the throat 14 is arranged to face in the same direction as the front surface of the front panel 10, that is, to face the front.

The sound emitting surface of the speaker unit 13 is fitted into the illustrated input opening of the throat 14 . Therefore, the input opening of the throat 14 is arranged to face the sound emitting surface of the speaker unit 13, and the output sound of the speaker unit 13 is input to the throat 14. The output opening of the throat 14 is arranged in the gap between the front panels 10, and the sound of the speaker unit 13 is output forward from the gap in the front panel 10.

f) Mounting hook 15, support hook 16
The attachment hook 15 and the support hook 16 are attachment means for detachably attaching the panel material 1a to the construction surface 2. The panel material 1a can be attached to the construction surface 2 by engaging the mounting hooks 15 of the panel material 1a with the support hooks 16 of the construction surface 2.

The shape, number, position, etc. of the attachment hooks 15 and the support hooks 16 are arbitrary. In the figure, two attachment hooks 15 are attached to left and right frame members 11b and 11d. The attachment hook 15 has a metal strip hook that projects rearward and extends downward, and the support hook 16 has a metal hook that projects forward and extends upward. Therefore, the attachment hook 15 and the support hook 16 can be removably engaged with each other.

(3) Detailed configuration of the throat 14 FIGS. 8 to 11 are diagrams showing examples of the detailed configuration of the throat 14. 8 to 10 are a perspective view, a front view, and a bottom view of the throat 14, and FIG. 11 is a sectional view showing a cut surface of the throat 14 taken along the line BB in FIG. 9.

The throat 14 has an input opening 141 at one end and an output opening 142 at the other end, and a hollow part 143 connecting the input opening 141 and the output opening 142 is formed, and the hollow part 143 serves as a sound wave path for propagating the output sound of the speaker unit 13. used as. The input opening 141 and the output opening 142 are arranged to be perpendicular to each other, and a hollow portion 143 connecting them has a substantially L-shaped cross section.

The throat 14 includes an input opening 141 and a straight part 144 that extends perpendicularly to the input opening 141, and a bent part 145 that has an output opening 142 and is bent so as to connect the straight part 144 to the output opening 142. be done. Further, in order to efficiently propagate sound waves, the hollow portion 143 is formed with a smooth inner wall having no steps.

The input opening 141 is an opening into which sound from the speaker unit 13 is input, and is arranged to face the sound emission surface 131 of the speaker unit 13. The input opening 141 has a shape corresponding to the sound emission surface 131 of the speaker unit 13, and by fitting the sound emission surface 131 side of the speaker unit 13 into the input opening 141, the throat 14 and the speaker unit 13 are integrated. The output sound of the speaker unit 13 is input to the input aperture 141. The illustrated input opening 141 has a cylindrical shape into which the speaker unit 13 is fitted, but a part of its outer peripheral surface is expanded outward to enable the routing of signal lines drawn out from the side surface of the speaker unit 13. .

The output opening 142 is an opening that outputs the sound that passes through the hollow part 143, is arranged in the gap between the front panels 10, and emits the sound toward the front of the panel material 1a. The output opening 142 has an elongated shape extending along the periphery of the front panel 10 and has a width narrower than the gap between the front panels 10, so that it can be disposed in the gap between the front panels 10.

The straight portion 144 is arranged along the back surface of the front panel 10, and the bent portion 145 is arranged so as to go around the periphery of the front panel 10. The cross section of the hollow part (sound wave path) of the straight part 144 has a constant width in the transverse direction intersecting the front panel 10, and the width in the longitudinal direction parallel to the front panel 10 increases as the distance from the input opening 141 increases. .

Further, a positioning contact portion 146 for positioning the throat 14 in the front-rear direction is provided on the front surface of the straight portion 144. By bringing the positioning contact portion 146 into contact with the back surface of the front panel 10, the output opening 142 is prevented from moving forward of a predetermined position, for example, forward of the front surface of the front panel 10.

Note that in this embodiment, the speaker unit 13 is fixed to the front panel 10 or the frame 11, the throat 14 is integrated with the speaker unit 13, and the positioning in the front-rear direction is performed by the positioning contact portion 146. However, the method of attaching the speaker unit 13 and the throat 14 is arbitrary. For example, the throat 14 may be fixed to the front panel 10.

(4) Functions and effects of panel material 1a a) Output sound of flat speaker An exciter 12 is provided on the back of the front panel 10, and the exciter 12 excites the front panel 10, so that the front panel 10 can be used as a diaphragm of the flat speaker. It can be made to work. Therefore, sound can be output toward the front of the panel material 1a without impairing space efficiency or aesthetics. Further, by forming the front surface of the panel material 1a and exciting the front panel 10 facing the indoor space, a large sound pressure can be ensured.

However, it is difficult to improve the sound quality of a flat speaker in which the diaphragm performs a bending motion. The front panel 10 is excited near its center by the exciter 12, and performs a bending motion that propagates on the diaphragm so that the vibration spreads outward, thereby outputting sound. For this reason, it is difficult to ensure good sound quality compared to a general speaker in which a diaphragm moves in translation.

b) Output sound of the speaker unit 13 The speaker unit 13 is provided in the rear space of the front panel 10, and the sound of the speaker unit 13 is output from the gap in the front panel 10 toward the front. Therefore, the sound of the speaker unit 13 arranged so as not to be visible can be outputted to the front of the panel material 1a, and the sound can be outputted without spoiling the aesthetic appearance. Furthermore, by using the speaker unit 13 whose diaphragm moves in translation, it is possible to output high-quality sound.

For example, it is conceivable to provide a large number of small holes in the front panel 10 and output the sound from the speaker unit 13 from the back side of the front panel 10 to the front side through these small holes. On the other hand, in the panel material 1a, the sound of the speaker unit 13 is output from the back side of the front panel 10 to the front side of the front panel 10 through the gap between the front panels 10. Therefore, the aesthetic appearance can be improved compared to the case where small holes are provided.

Further, a throat 14 is provided on the back side of the front panel 10, and the sound of the speaker unit 13 is outputted to the front side of the front panel 10 through a sound wave path inside the throat 14. Therefore, the sound from the speaker unit 13 can be output to the front of the front panel 10 while suppressing sound pressure attenuation.

However, the speaker unit 13 needs to be placed in the rear space of the front panel 10, and there is a limit to the external size of the speaker unit 13. Furthermore, the sound of the speaker unit 13 must be output by going around the edge of the front panel 10, making it impossible to avoid sound pressure attenuation and making it difficult to ensure a large sound pressure.

c) Output sound of the panel material 1a The panel material 1a has a flat speaker using the front panel 10 as a diaphragm and is arranged in the rear space of the front panel 10, and the sound goes around the periphery of the front panel 10 and is output forward. By including the speaker unit 13, it is possible to achieve both sound pressure and sound quality, or to output balanced sound.

Furthermore, since it is difficult for a flat speaker to output high-frequency sounds, it is desirable to use the flat speaker as a woofer for low-frequency range and use the speaker unit 13 as a tweeter for high-frequency range. For example, by supplying a first audio signal for a low frequency range to the exciter 12 and supplying a second audio signal for a high frequency range that includes a higher frequency range than the first audio signal to the speaker unit 13, a wide range of sounds can be covered. be able to. Moreover, good sound pressure and sound quality can be ensured in a wide sound range.

For example, if you want to output environmental sounds including the babbling of a stream or the voices of small birds, it is not possible to ensure good sound quality with only a flat speaker, but by providing the speaker unit 13, such environmental sounds can be output. becomes possible.

Furthermore, by outputting the sound of the speaker unit 13 to the front of the front panel via the sound wave path of the throat 14, attenuation of sound pressure can be suppressed, so sound pressure in the high frequency range can be ensured. . Moreover, by orienting the output opening 142 of the throat 14 in the same direction as the front surface of the front panel 10, the sound of the speaker unit 13 can be outputted toward the front of the panel material 1a.

d) Aesthetics and Indoor Space Usage Efficiency Since the panel material 1a has an audio output function, there is no need to separately install an audio output device in the indoor space, and the efficiency of indoor space usage can be improved. Further, by providing the exciter 12 on the back side of the front panel 10 and arranging the speaker unit 13 and the throat 14 in the space on the back side of the front panel 10, the aesthetic appearance is not spoiled.

Embodiment 2.
In the first embodiment, an example of the panel material 1a that uses the throat 14 to output the sound of the speaker unit 13 forward has been described. In contrast, in this embodiment, a panel material 1b that outputs the sound of the speaker unit 13 forward by utilizing reflection by the construction surface 2 will be described.

12 to 15 are diagrams showing an example of the structure of the panel material 1b according to the second embodiment of the present invention. 12 and 13 are a front view and a rear view of the panel material 1b, FIG. 14 is a cross-sectional view showing a cut surface taken along the line CC in FIG. 12, and FIG. 15 is a diagram showing the area of FIG. It is an enlarged view showing A3 enlarged. Although only one panel material 1b is shown in FIG. 13, FIGS. 12 and 13 to 15 show two or more panel materials 1b attached to the construction surface 2. There is. The appearance of the construction example of the panel material 1b is the same as that in FIG. 1 (Embodiment 1), and therefore will be omitted. Furthermore, the same configurations as in the first embodiment are given the same reference numerals and redundant explanations will be omitted.

Panel material 1b differs from panel material 1a (Embodiment 1) in that it does not include throat 14. It also differs from the panel material 1a (Embodiment 1) in that the outer frame region 32 is not formed and the speaker unit 13 is arranged in the inner frame region 31.

Frame materials 11a to 11d constituting the frame 11 are all arranged adjacent to the periphery of the front panel 10, and outside the frame 11, an outside area 32 for arranging the speaker unit 13 and the throat 14 is formed. It has not been. Therefore, a wider area can be secured as the intra-frame region 31 used as a diaphragm.

The speaker unit 13 is supported by the speaker support portion 17 and is arranged within the frame region 31 so as to be spaced apart from the front panel 10 . The speaker support part 17 is a support means fixed to the frame 11, and can be made of, for example, a metal plate or a resin plate. The speaker support portion 17 is spaced apart from the front panel 10 and has a shape extending toward the inside of the front panel 10 from the frame member 11a. Further, the speaker support portion 17 has an inclined surface that is at an angle with respect to the front panel 10, and the speaker unit 13 is attached to this inclined surface.

The speaker unit 13 is arranged diagonally so that the sound emitting surface 131 faces outward and rearward. That is, the sound emitting surface 131 has an angle with respect to the front panel 10 and is arranged obliquely so as to face the peripheral edge side of the front panel 10 and the construction surface 2 side.

The sound output from the speaker unit 13 is reflected by the construction surface 2, passes through the gap between the front panels 10, and is output to the front of the panel material 1b. Therefore, by appropriately adjusting the postures and positions of the front panel 10, the construction surface 2, and the speaker unit 13, the sound from the speaker unit 13 can be output forward through the gap between the front panels 10. In order to output sound from the speaker unit 13 forward through the gap between the front panels 10, it is necessary to provide an appropriate distance between the speaker unit 13 and the construction surface 2, for example, 40 to 60 mm. desirable.

In the panel material 1b according to the present embodiment, the speaker unit 13 is arranged diagonally in the rear space of the front panel 10 so that the sound emitting surface 131 faces diagonally rearward on the outside, and the sound of the speaker unit 13 is emitted from the construction surface 2. It is reflected and output forward through the gap between the front panels 10. Therefore, it can be realized without using the throat 14, and the configuration can be simplified.

Embodiment 3.
In the second embodiment, an example has been described in which the sound from the speaker unit 13 is reflected by the construction surface 2 and output forward. In contrast, in this embodiment, a case will be described in which the sound of the speaker unit 13 is reflected by a reflecting surface and output forward.

FIG. 16 is a diagram showing a configuration example of a panel material 1c according to Embodiment 3 of the present invention. This figure corresponds to FIG. 15 (enlarged view of area A3) of panel material 1b (Embodiment 2). Note that the same components as in the second embodiment are given the same reference numerals and redundant explanations will be omitted.

The panel material 1c differs from the panel material 1b (Embodiment 2) in that it includes a reflective member 18. The reflecting member 18 has a reflecting surface 181 that reflects the sound from the speaker unit 13. The reflective member 18 is arranged in the back space near the periphery of the front panel 10, and the reflective surface 181 is arranged diagonally so as to face inward and forward. That is, the reflecting member 18 is arranged outside the speaker unit 13, and its reflecting surface 181 is arranged at an angle with respect to the front panel 10, and is arranged diagonally so as to face the speaker unit 13 side and the front panel 10 side. Ru.

The sound output from the speaker unit 13 is reflected by the reflective surface 181, passes through the gap between the front panels 10, and is output to the front of the panel material 1c. Therefore, by appropriately adjusting the postures and positions of the front panel 10, the speaker unit 13, and the reflective surface 181, the sound from the speaker unit 13 can be output forward through the gap between the front panels 10.

Although the illustrated reflecting member 18 is attached to the construction surface 2, it can also be configured to be attached to the frame 11. If the reflective member 18 is supported by the panel material 1c, the relative posture and position of the front panel 10, the speaker unit 13, and the reflective surface 181 will not change due to the work of attaching the panel material 1c to the construction surface 2. For this reason, for example, it is desirable that the reflective member 18 be supported by the frame 11. Note that the reflective surface 181 can be configured as a flat surface, but it can also be configured as a curved surface.

The panel material 1c according to the present embodiment includes a reflective member 18 near the periphery of the front panel 10, and reflects the sound of the speaker unit 13 on the reflective surface 181 of the reflective member 18, and outputs it forward from the gap between the front panels 10. I'm letting you do it. Therefore, the sound output direction of the speaker unit 13 can be brought closer to the direction orthogonal to the front panel 10.

Note that the panel materials 1a to 1c can also be constructed without the exciter 12. In other words, it is also possible to configure the front panel 10 to output only the sound from the speaker unit 13 without using it as a diaphragm.

1a to 1c Panel material 2 Construction surface 10 Front panel 11 Frame 11a to 11d Frame material 12 Exciter 13 Speaker unit 131 Sound emitting surface 14 Throat 141 Input opening 142 Output opening 143 Hollow part 144 Straight part 145 Bent part 146 Positioning contact part 15 Mounting hook 16 Support hook 17 Speaker support section 18 Reflective member 181 Reflective surface 31 Inner frame area 32 Outer frame area

Claims (11)

A panel material that is removably attached to a construction surface, is arranged on the construction surface so that a gap is formed between adjacent panel materials, and is used to form an interior or exterior surface of a building ,
a front panel arranged along the construction surface and forming a back space between the front panel and the construction surface;
an exciter attached to the back of the front panel for vibrating the front panel and emitting sound forward;
A panel material comprising: a speaker unit provided in the back space and for emitting sound through the gap. The panel material according to claim 1, wherein an audio signal for a low frequency range is input to the exciter, and an audio signal for a high frequency range is input to the speaker unit. 3. The speaker unit according to claim 1 or 2, wherein the speaker unit is arranged at a position closer to the periphery of the front panel than the exciter, and its sound emitting surface is directed toward the periphery of the front panel. Panel material. a frame attached to the back of the front panel and surrounding the exciter;
The panel material according to claim 1, wherein the speaker unit is supported by the frame. The panel material according to any one of claims 1 to 4, further comprising a throat forming a sound wave path extending from the speaker unit toward the periphery of the front panel. The throat has an input opening that faces the sound emitting surface of the speaker unit and receives sound from the speaker unit, and an output opening that faces the same direction as the front surface of the front panel and outputs the sound. The panel material according to claim 5, comprising: and. 6. The throat has a straight portion extending from the input opening along the front panel, and a bent portion that bends around an edge of the front panel and reaches the output opening. Panel materials listed in. 8. The panel material according to claim 6, wherein the sound emitting surface of the speaker unit and the input opening of the throat are arranged substantially perpendicular to the front panel. The speaker unit is arranged obliquely with a sound emitting surface facing a peripheral edge side and a construction surface side of the front panel,
The panel material according to any one of claims 1 to 4, wherein the output sound of the speaker unit is reflected by the construction surface and is output forward from the front panel through the gap. comprising a reflective surface forming an angle with the construction surface,
The panel material according to any one of claims 1 to 4, wherein the output sound of the speaker unit is reflected by the reflective surface and output through the gap. Consisting of a plurality of panel materials that are removably attached to the construction surface and arranged two-dimensionally on the construction surface so that gaps are formed between adjacent panel materials, the interior surface of the building or In the panel material assembly that forms the exterior surface,
The panel material is
a front panel arranged along the construction surface and forming a back space between the front panel and the construction surface;
an exciter attached to the back of the front panel for vibrating the front panel and emitting sound forward;
A panel material assembly comprising: a speaker unit provided in the back space and for emitting sound through the gap.

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