JP2009201159A - Acoustic reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic reproducing device by an oscillating material which uses the function of a wall surface material, door material, column material, ceiling material, floor material, window material, screen material, partition material, or folding screen material together as part of the building material. <P>SOLUTION: A voice coil 28 is coupled onto a surface of an oscillating material which uses the function of the building material together and is formed in a nearly plane shape. A magnetic flux generating means is provided in a range for operating this voice coil 28, and the magnetic flux generating means and oscillating material are coupled to a body to be mounted. Consequently, the reductions of the size and thickness of the device are realized. A space factor in a room is improved. The flexibility of an indoor layout is improved. The cost reduction by the reduction in the number of parts and the improvement in the productivity are attempted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sound reproducing device used in a living space composed of building materials such as a house, a condominium, and an office building.

  FIG. 19 is a diagram illustrating a configuration of a conventional living space and a sound reproducing device used in the living space.

  In FIG. 19, 100 is a living space, 101 is a wall, 102 is a ceiling, 103 is a floor, 104 is a pillar, 105 is a door, and 106 is a window.

  In this living space 100, an audio system 200 equipped with a 5.1 channel surround system capable of reproducing a realistic sound field, which has recently been popularized in each home, is installed.

  The audio system 200 includes a main body unit 201 including a player unit and an amplifier unit including its operation means, signal input means, amplification means, and the like, a right front speaker 202, a left front speaker 203, a right rear speaker 204, and a left rear speaker 205. The center speaker 206 and the subwoofer 207 are composed of a total of six speakers.

  These speakers have been devised so that they can be used in a corner of the room or embedded in the wall 101 so that the living space 100 can be secured as much as possible.

  As prior art document information related to the invention of this application, for example, Patent Document 1 is known.

Japanese Utility Model Publication No. 3-86688

  The audio system 200, which is a conventional sound reproduction device, requires a total of six speakers, particularly when the 5.1 channel surround system as described above is mounted, and an enclosure is required for each speaker. Very large.

  Furthermore, it is important to secure a large volume of the enclosure in order to widen the reproduction band and realize a real sound reproduction that can be reproduced at a high volume.

  On the other hand, the housing situation is becoming the mainstream of the recent living environment by improving the living environment and improving the cost performance by effectively using a narrow living space, as represented by condominiums in central Tokyo.

  Therefore, the installation of the audio system 200 equipped with the 5.1-channel surround system capable of reproducing the above-described real sound and sound field requires a large area, so it has been avoided from the recent housing situation. It had a problem of being.

  As countermeasures for this, some speakers were downsized or embedded in the wall, but it is possible to reduce the volume required for installation, but all of them are disadvantageous in terms of sound reproduction and are realistic. Good sound reproduction could not be realized.

  An object of the present invention is to solve such a conventional problem and to provide an audio reproducing apparatus that can effectively use a narrow living space.

  In order to solve the above-mentioned problems, the present invention comprises at least a magnetic flux generating means and a vibrating body in which a voice coil is arranged in a non-contact state with the magnetic flux generating means in a range in which the magnetic flux of the magnetic flux generating means acts. The magnetic flux generating means and the vibrating body are coupled to the mounted body, the vibrating body is formed in a substantially flat shape, the voice coil is provided on the surface of the vibrating body, and the vibrating body is a wall material that is a part of the building material The sound reproducing device is composed of any one of door material, pillar material, ceiling material, floor material, window material, screen material, partition material or folding screen material.

  As described above, the sound reproducing device according to the present invention can be reduced in size and thickness by configuring the sound reproducing device with the vibrating body formed of a part of the building material.

  Therefore, since a space for installing the sound reproduction device which is a speaker system is unnecessary, the space factor in the room can be improved and the degree of freedom in the indoor layout can be improved.

  Furthermore, since the vibrating body also uses the function of the building material, the original speaker diaphragm is not necessary, and the cost can be reduced and the productivity can be improved by reducing the number of parts.

The figure which showed the structure of the living space and sound reproduction apparatus by embodiment of this invention External view of a vibrating body that is a part of a building material according to an embodiment of the present invention Sectional drawing which shows the use condition of the sound reproduction apparatus by embodiment of this invention Sectional drawing which shows the use condition of the sound reproduction apparatus by embodiment of this invention Sectional drawing of the sound reproduction apparatus by embodiment of this invention Sectional drawing of the sound reproduction apparatus by embodiment of this invention External view of vibrator according to an embodiment of the present invention External view of vibrator according to an embodiment of the present invention Sectional drawing of the sound reproduction apparatus by embodiment of this invention Sectional drawing of the sound reproduction apparatus by embodiment of this invention Sectional drawing of the sound reproduction apparatus by embodiment of this invention Sectional drawing of the sound reproduction apparatus by embodiment of this invention The figure which showed the structure of the living space and sound reproduction apparatus by embodiment of this invention The external view of the sound reproduction apparatus which is a building material by embodiment of this invention The external view of the sound reproduction apparatus which is a construction related material by embodiment of this invention The external view of the sound reproduction apparatus which is a construction related material by embodiment of this invention The figure which showed the structure of the living space and sound reproduction apparatus by embodiment of this invention The figure which showed the structure of the living space and sound reproduction apparatus by embodiment of this invention The figure which showed the structure of the conventional living space and the sound reproduction device

(Embodiment 1)
Hereinafter, the present invention will be described with reference to the drawings using the first embodiment.

  FIG. 1 is a diagram showing a living space of the present invention and a configuration of a sound reproducing device used in the living space.

  In FIG. 1, 300 is a living space, 301 is a front wall, 302 is a ceiling, 303 is a floor, 304 is a pillar, 305 is a door, and 306 is a window.

  In this living space 300, an audio system 400 equipped with a 5.1 channel surround system capable of reproducing a realistic sound field, which has recently become popular in each home, is installed.

  The audio system 400 uses a main body portion 401 including a player unit and an amplifier unit including its operation means, signal input means, amplification means, and the like, and the right wall surface material of the front wall as the vibrating body 27 of the right front speaker 402. The left wall surface material of the front wall is used as the vibrating body 27 of the left front speaker 403.

  1 is used as the vibrating body 27 of the right rear speaker 404, and the left wall surface material of the rear wall is used as the vibrating body 27 of the left rear speaker 405.

  Further, the central wall surface material of the front wall is used as the vibrating body 27 of the center speaker 406 and the left wall surface material of the side wall is used as the vibrating body 27 of the subwoofer 407, so that a total of six speakers are formed.

  The broken line portion in the figure indicates the voice coil 28 built in the wall surface.

  FIG. 2 is an external view showing only a wall surface material that is a building material used as the vibrating body 27 shown in FIG. 1, and the wall surface material as the vibrating body 27 is formed in a substantially flat shape.

  A broken line portion in the figure shows the voice coil 28 arranged on the back side of the wall surface.

  FIG. 3 is a cross-sectional view showing a use state of the wall material of FIG. 2, and a magnetic circuit 24 including a magnet 21 as a magnetic flux generating means is coupled to a wall core material 410 formed between two column members 304. The voice coil 28 is inserted into the magnetic gap 25 formed by the magnet 21 and the yoke 23 of the magnetic circuit 24, and the opposite side of the voice coil 28 is coupled to the vibrating body 27.

  The vibrating body 27 becomes the surface of the wall and has a function as a wall and also has a function of generating sound as a diaphragm.

  That is, the magnetic circuit 24 is a magnetic flux generating means, and a vibrating body 27 in which a voice coil 28 disposed in a non-contact state with the magnetic flux generating means is coupled to a range in which the magnetic flux of the magnetic flux generating means acts. The vibrating body 27 is a part of building material and constitutes a sound reproducing device.

  With this configuration, the sound reproducing device can be configured to be small and thin by using the vibrating body 27 formed of a part of the building material.

  In addition, a conical diaphragm that is often used in a conventional sound reproducing device, so-called cone paper, is formed in a substantially flat shape as a wall surface material, so that a significant reduction in thickness can be realized.

  Furthermore, since the vibrating body 27 also uses the function of the building material, the original speaker diaphragm is not required, and the cost can be reduced and the productivity can be improved by reducing the number of parts.

  The above-described sound reproduction device is applied to a 5.1 channel surround system capable of reproducing a realistic sound field. Since the audio system 400 is configured by a total of six speakers, By replacing all the diaphragms with wall surfaces, the living space of the house can be greatly expanded.

  FIG. 4 is a cross-sectional view showing a state in which wall materials having the function of the vibrating body 27 are used on both the front surface and the back surface, and two or more sound reproducing devices with the sound reproducing device facing the magnetic flux generating means side. Are integrally coupled. That is, the yoke 23 which is a part of the magnetic circuit 24 which is a magnetic flux generating means is configured to be shared.

  This configuration is effective when the central wall of two consecutive rooms is shared, and the walls of each room have the function of a speaker that reproduces sound, allowing parts to be shared and saving space. And cost reduction can be realized.

  In addition, although this structure demonstrated what comprised the yoke 23 which is a part of magnetic circuit 24, it was not limited to this, The magnet 21 may be shared and components other than these may be used. It may be shared.

  FIG. 5 shows an acoustic reproduction device configured by coupling a magnetic circuit 24 serving as a magnetic flux generation unit and a vibrating body 27 to a mounted body. This is a configuration in which the above-described sound reproducing device is provided with a frame 26 that is a frame body to be mounted. Since the other configuration is the same as the configuration shown in FIG. Thus, even if there is no wall core material or pillar material, the wall surface module as the sound reproducing device can be configured, and the building material can be managed and operated independently.

  Therefore, it is not necessary to assemble and configure at the building site, and it can be completed as a wall surface module as a sound reproducing device inside the building material factory, and management and operational ease and cost reduction can be achieved.

  FIG. 6 is configured by sharing the yoke 23 that is a part of the magnetic circuit 24 that is the magnetic flux generating means shown in FIG. 4, and is also configured by sharing the frame 26 that is a frame as a mounted body. Is.

  By adopting this configuration, it is possible to configure a wall surface module that shares the central wall of two consecutive rooms and gives the function of a speaker to reproduce sound on the walls of each room, and as a building material alone Management and operation are possible.

  Furthermore, parts can be shared, and space saving and cost reduction can be realized.

  With the above-described configuration, a space for installing the sound reproduction device that is a speaker system is not required, the indoor space factor can be improved, and the degree of freedom in the indoor layout can be improved.

  In addition, parts can be shared, space-saving, and cost can be reduced. In addition, it can be completed as a wall module as a sound reproduction device inside the building material factory, and management and operation are easy. The effect is enormous.

  Furthermore, the wiring between the audio system and each speaker can also be carried out inside the wall, so that troublesome cords can be eliminated from the living space in daily life, improving the comfort of living and the living environment. Can be planned.

(Embodiment 2)
Hereinafter, the present invention will be described with reference to the drawings using a second embodiment.

  FIG. 7 is a perspective view of the vibrating body 27 showing the configuration of the voice coil 28 of the present invention.

  FIG. 7 shows a voice coil provided on the surface of the vibrating body without crossing the magnetic flux generating means by using a printing method, a plating method, an etching method or the like without using a winding method.

  Further, as shown in FIG. 8, the voice coil 28 may be provided so as to include at least the vicinity of the outer peripheral portion of the vibrating body 27.

  As in these configurations, the voice coil 28 is formed in a square spiral shape on at least the surface of the vibrating body 27 including the vicinity of the outer peripheral portion thereof.

  FIG. 9 and FIG. 10 are cross-sectional views showing the configuration of a sound reproducing device using the vibrating body 27 in which the voice coil 28 shown in FIG. 7 and FIG. 8 is formed.

  In FIG. 9, the voice coil 28 is provided on the surface of the vibrating body 27 so as not to intersect the magnetic flux generating means, and its outer periphery is coupled to a frame 26 which is a frame body as a mounted body.

  The magnetic flux generating means for driving the vibrating body 27 couples a plurality of magnets 21 to a yoke 23 formed in such a shape that these magnets 21 can be coupled, and the leakage magnetic flux generated from the magnetic gap 25 acts on the voice coil 28. Thus, the vibrating body 27 is driven.

  In FIG. 10, the voice coil 28 is formed on both surfaces of the vibrating body 27, and the voice coil 28 is formed on the entire surface of the vibrating body 27 as shown in FIG. As shown in FIG. 8, the voice coil 28 is formed at least in the vicinity of the outer periphery of the vibrating body 27.

  The voice coils 28 formed on both the front and back surfaces of the vibrating body 27 are arranged with a magnetic circuit 24 serving as a magnetic flux generating means on both sides thereof, and at least a part of the voice coil 28 is opposed to the vibrating coil 27. The vibrating body 27 is driven by causing the leakage magnetic flux generated from the magnetic gap 25 of the magnetic circuit 24 to act on the voice coil 28.

  By adopting the above configuration, the voice coil 28 is formed on the surface of the vibrating body 27 so as not to intersect the magnetic circuit 24 that is a magnetic flux generating means, so that the sound reproducing device can be thinned.

  Furthermore, as shown in FIG. 10, when the voice coil 28 is formed on both sides of the vibrating body 27, the driving force can be increased and the sound pressure level of the sound reproducing device can be improved. .

  FIG. 11 shows the magnetic flux generating means of the present invention constituted by an induced magnetic field by current.

  As shown in FIG. 11, the outer peripheral portion of the vibrating body 27 on which the voice coil 28 is formed is coupled to a frame 26 which is a frame body as a mounted body. Is provided with a coil 28A.

  A current is passed through the coil 28A, the generated magnetic flux is applied to the voice coil 28, and the vibrator 27 is driven.

  With this configuration, a magnetic circuit including a magnet is not necessary, and further downsizing and thinning of the device can be realized.

  In FIG. 12, a coil 28A for generating an induction magnetic field, which is the magnetic flux generating means of FIG. 11, is provided on both sides of a frame 26, which is a frame as a mounted body, and a voice coil 28 is formed. Also, the vibrating body 27 is configured such that the outer peripheral portions of both sides of the coil 28 </ b> A formed on the frame 26 are coupled to the frame 26 on both front and back surfaces.

  By adopting this configuration, it is possible to reduce the thickness of the sound reproducing apparatus that can realize sharing of components, space saving, and cost reduction, and the effect is enormous.

  In the above configuration, the vibration body 27 and the frame 26 are preferably combined with a flexible adhesive or pressure-sensitive adhesive from the viewpoint that the amplitude of the vibration body 27 can be sufficiently secured.

  However, if necessary, a high-hardness adhesive can be used, and it is also possible to use the vibrator 27 and the frame 26 without being coupled.

(Embodiment 3)
Hereinafter, the present invention will be described with reference to the drawings using a third embodiment.

  FIG. 13 is a diagram showing the structure of the living space of the present invention and the sound reproducing device used in this living space.

  Since the living space of the present invention has been described in the first embodiment, detailed description thereof is omitted, but the vibrator 27 described in the first embodiment has been described with respect to an example in which a wall material of a building material is used. However, application to building materials other than wall materials and building-related materials will be described here.

  In FIG. 13, 301 is a wall, 302 is a ceiling, 303 is a floor, 304 is a pillar, 305 is a door, and 306 is a window.

  The building material in which the voice coil shown by the broken line in FIG. 13 is incorporated, that is, the ceiling material 302, the floor material 303, the column material 304, the door material 305, and the window material 306 are also the same as in the first embodiment. Similarly, by providing a voice coil and magnetic flux generation means, it can be configured as a vibrating body of an acoustic reproduction device.

  Note that an enlarged perspective view of the column material 304 is shown in FIG.

  In addition, it is also possible to apply to the partition-related material 320 shown in FIGS. 15 and 16, the partition 321, and building-related materials such as folding screens.

  Further, although not shown, it can be applied to exteriors such as nameplates, outer walls, and gateposts as building-related materials.

(Embodiment 4)
Hereinafter, the present invention will be described with reference to the drawings using a fourth embodiment.

  FIG. 17 is a diagram showing the structure of the living space of the present invention and the sound reproducing device used in this living space.

  Since the living space of the present invention has been described in the first embodiment, the detailed description thereof will be omitted, but the means for using the voice coil and the vibrating body for the building material described in the first embodiment will be described.

  In FIG. 17, 301 is a front wall, 330 is a back wall.

  The building material in which the voice coil indicated by the broken line in FIG. 17 is incorporated, that is, the front wall of 301 and the rear wall of 330 are also reproduced by providing the same voice coil and magnetic flux generating means as in the first embodiment. It is configured as a vibrating body of the device.

  Here, by combining two or more independent voice coils to one vibrating body and inputting different electrical signals to each voice coil to configure a sound reproducing device, the performance can be improved. it can.

  For example, in the first embodiment, the right voice coil is formed on the right side of the front wall 301. However, in this embodiment, the voice coil is divided into three to form three voice coils. The sound reproduction apparatus can be used by inputting signals having different frequency bands to the respective voice coils.

  That is, among the three voice coils, the upper small voice coil 28B receives a signal dedicated to the high frequency range that is normally input to the tweeter, and the intermediate mid-range voice coil 28C receives the normal midrange range that is input to the squawker. A dedicated signal is input, and a low-frequency dedicated signal input to the normal woofer is input to the large voice coil 28D on the lower side to constitute a multiway speaker.

  With this configuration, it is possible to reproduce optimum frequency characteristics in the high sound range, the mid sound range, and the low sound range, respectively, by the mass of each voice coil and each vibrating body to which the voice coil is coupled.

  In other words, it is better by controlling the signal input so that the voice coil and the vibrating body, which are lighter and have a smaller area, receive the high sound range, and the voice coil and the vibrating body, which have a larger mass and a larger area, each receive the low sound area Frequency characteristics can be realized.

  Further, as shown in FIG. 1 of the first embodiment, a stereo signal can be divided and inputted to the front wall 301 by dividing it into the right side and the left side, even if it is not divided as in the present embodiment. The sound reproduction apparatus can also be configured by inputting a corresponding surround signal to a part suitable for the reproduction frequency band.

  As described above, the method of connecting the two or more independent voice coils to one vibrating body and inputting different electric signals to each voice coil to configure the sound reproducing device has been described. As long as there is little vibration transmission, there is a possibility that vibration from another voice coil is transmitted to a vibrating body to which one voice coil is coupled, which may have an adverse effect.

  In this case, a method of preventing vibration transmission by providing a slit 331 on the wall surface material as in the back wall 330 shown in the lower part of FIG. 17 is effective.

  In this embodiment, since the slit between the left and right and the two slits between the upper and lower are provided, it is possible to realize a stereo correspondence and a three-way multiway correspondence with high performance.

  By adopting this configuration, the separation between each voice coil and each channel of each vibrator to which this voice coil is coupled can be improved, crosstalk can be reduced, and sound reproduction with better performance can be achieved. An apparatus can be realized.

  Although not shown, the vibrating body 27 can also be configured to include a flexible edge portion on the outer peripheral portion thereof.

  With this configuration, the amplitude amount of the vibrating body 27 can be increased and the linearity can be improved by the effect of the edge portion rich in flexibility, so that performance such as acoustic characteristics can be improved.

  Further, as described above, even if the edge portion rich in flexibility is not provided, it is also possible to obtain an effect close to the above by configuring the outer peripheral portion of the vibrating body 27 to be softer than the portion other than the outer peripheral portion.

  By adopting this configuration, without providing an edge portion, the effect of configuring a vibrating body whose outer peripheral portion is rich in flexibility, the amplitude amount of the vibrating body can be expanded, and linearity can also be improved. Both performance improvement and cost reduction can be achieved.

  In addition, the above description has been given of an example in which the voice coil 28 is formed in one layer winding. However, in order to cope with performance improvement such as further improvement in sound pressure level, the voice coil 28 should be formed in two or more layers. Thus, the driving force is improved, and an improvement in efficiency such as an improvement in sound pressure level can be realized.

  In addition, as shown in FIG. 18, a sound reproducing device or a building material can be configured by embedding part or all of the operation means, the signal input means, and the amplification means in a building material.

  By adopting this configuration, not only the sound reproduction device such as a speaker but also the entire system can be embedded in the building material, so that the indoor space factor can be improved and the degree of freedom of the indoor layout can be improved. it can.

  Furthermore, by constructing the color of the vibrating body as a white color, a building material such as a wall material can be used as a function other than acoustic radiation as a video display panel or a video display screen such as a liquid crystal projector. .

  With this configuration, a space for installing the video display panel and the video display screen is not required, so that the indoor space factor can be improved and the degree of freedom of the indoor layout can be improved.

  In addition, parts can be shared, space-saving, and cost can be reduced. In addition, it can be completed as a wall module as a sound and video playback device inside the building material factory, facilitating management and operation. Sexuality can also be achieved, and the effect is tremendous.

  In addition, the above-mentioned sound and video playback devices and building materials are installed to form living spaces and building structures such as houses, condominiums, and office buildings, thereby eliminating wasted space and improving the indoor space factor. In addition, it is possible to provide a living space or a building structure that can improve the degree of freedom of indoor layout.

  The sound reproducing device according to the present invention can be configured by a vibrating body that also uses the functions of building materials, and the space factor is improved by reducing the size and thickness of the device and by reducing the number of parts. It can also be expected to be applied to sound reproduction devices and equipment used in living spaces composed of building materials such as houses, condominiums, and office buildings.

21 magnet 23 yoke 24 magnetic circuit 25 magnetic gap 26 frame 27 vibrating body 28 voice coil 28A coil 28B voice coil 28C voice coil 28D voice coil 100 living space 101 wall 102 ceiling 103 floor 104 pillar 105 door 106 window 200 audio system 201 main body 202 Right Front Speaker 203 Left Front Speaker 204 Right Rear Speaker 205 Left Rear Speaker 206 Center Speaker 207 Subwoofer 300 Living Space 301 Front Wall 302 Ceiling Material 303 Floor Material 304 Column Material 305 Door Material 306 Window Material 320 Screen Material 321 Partition 330 Back Wall 331 Slit 400 Audio system 401 Main unit 402 Right front speaker 403 Left front speaker 404 Rear speaker 405 the left rear speaker 406 center speaker 407 subwoofer 410 wall heartwood

Claims (21)

It comprises at least a magnetic flux generating means and a vibrating body in which a voice coil arranged in a non-contact state with the magnetic flux generating means in a range in which the magnetic flux of the magnetic flux generating means acts, and the magnetic flux generating means and the vibrating body are Coupled to the mounted body, the vibrating body is formed in a substantially planar shape, the voice coil is provided on the surface of the vibrating body, the vibrating body is a wall material, door material, which is a part of the building material, A sound reproducing device made of any of pillar materials, ceiling materials, floor materials, window materials, screen materials, partition materials or folding screen materials. The sound reproducing device according to claim 1, wherein the voice coil is provided on the surface of the vibrating body so as not to intersect the magnetic flux generating means. The sound reproducing device according to claim 1, wherein the voice coil is provided so as to include at least the vicinity of the outer peripheral portion of the vibrating body. The sound reproducing device according to any one of claims 1 to 3, wherein the magnetic flux generating means is a magnetic circuit including a magnet. The sound reproducing device according to any one of claims 1 to 3, wherein the magnetic flux generating means is an induced magnetic field generated by an electric current. The sound reproducing device according to any one of claims 1 to 5, wherein at least a part of the magnetic flux generating means is disposed so as to face each other via a vibrating body. The sound reproducing device according to any one of claims 1 to 6, wherein a voice coil is coupled to the front and back surfaces of the vibrating body. The sound reproducing device according to any one of claims 1 to 7, wherein an outer peripheral portion of the vibrating body is configured to be softer than a portion other than the outer peripheral portion. The sound reproducing device according to any one of claims 1 to 7, wherein the vibrating body includes a flexible edge portion on an outer peripheral portion thereof. The sound reproducing device according to any one of claims 1 to 9, wherein the voice coil is configured to have two or more layers. The sound reproducing device according to any one of claims 1 to 10, wherein two or more independent voice coils are coupled to one vibrating body, and different electrical signals are input to the respective voice coils. The sound reproducing device according to claim 11, wherein signals having different frequency bands are input. The sound reproducing device according to claim 11, to which a stereo signal is input. The sound reproducing apparatus according to claim 11, wherein a surround signal corresponding to 5.1 channel is input. 15. An acoustic reproduction apparatus in which two or more acoustic reproduction apparatuses are integrally coupled with the acoustic reproduction apparatus according to claim 1 facing the magnetic flux generation means side. The sound reproducing device according to claim 15, wherein a part of the magnetic flux generating means is shared. The sound reproducing device according to claim 15 or 16, wherein the mounted body is shared. A building material on which the sound reproducing device according to any one of claims 1 to 17 is mounted. The building material according to claim 18, wherein the color is white. The sound reproducing device or building material according to any one of claims 1 to 19, wherein a part or all of the operating means, the signal input means, and the amplifying means are embedded in the building material. A building structure on which the building material according to any one of claims 18 to 20 is mounted.

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