building material

Abstract

The building material (1) is a building material (1) facing a first space, and includes: a plate-shaped structure (14) having openings (15, 16); a first speaker (21) disposed at a position opposite to the openings (15, 16) in a second space opposite to the first space with the structure (14) interposed; and a three-dimensional net-shaped structure (30) disposed between the structure (14) and the first speaker (21) and composed of fiber-shaped members intertwined in three dimensions.

Description

Technical Field

[0001] This disclosure pertains to building materials. Background Technology

[0002] Patent document 1 discloses a speaker system that is mounted on the ceiling panel of a bathroom unit, and the sound radiating surface of the speaker unit is covered by a decorative cover.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2005-143900 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In building materials such as ceilings and walls where loudspeakers are installed, it is desirable to improve both the appearance of the building materials and the acoustic performance of the sound emitted by the loudspeakers.

[0008] The purpose of this disclosure is to provide a building material that can simultaneously improve the appearance of the building material and improve the acoustic performance of the sound emitted by the loudspeaker.

[0009] Methods used to solve problems

[0010] One aspect of the building material disclosed herein is a building material facing a first space, the building material comprising: a plate-shaped structure having an opening; a first loudspeaker disposed in a second space opposite to the first space and separated from the structure, positioned opposite the opening; and a three-dimensional mesh structure disposed between the structure and the first loudspeaker, composed of fibrous components intertwined in a three-dimensional manner.

[0011] Invention Effects

[0012] The building materials disclosed herein can simultaneously improve the appearance of the building materials and improve the acoustic performance of the sound emitted by the loudspeakers. Attached Figure Description

[0013] Figure 1 This is a diagram showing an example of how building materials are installed.

[0014] Figure 2 This is a three-dimensional view of the building materials as seen from above.

[0015] Figure 3 This is a three-dimensional view of the building materials as seen from below.

[0016] Figure 4 yes Figure 2 Section IV-IV of the building materials.

[0017] Figure 5 It is a graph representing the acoustic properties of building materials.

[0018] Figure 6 This is a diagram showing an example of the building materials used in variation 4.

[0019] Figure 7 This is a perspective view of the building material in variation example 5.

[0020] Figure 8 This is a perspective view of the structure after removing a portion of the foliage plant from the building material of Modification 5.

[0021] Figure 9 This is a perspective view of the building material in another form, as seen from the front side, related to variation 5.

[0022] Figure 10 This is a perspective view of the structure after a portion of the foliage plant has been removed from the building material of another form of the modified example 5, viewed from the side. Detailed Implementation

[0023] (The knowledge upon which this disclosure is based)

[0024] In the speaker system of Patent Document 1, the speaker unit is covered by a decorative cover. Therefore, the speaker system makes the speaker unit less visible to the naked eye. This can be considered as improving the appearance of the speaker system. Furthermore, by covering the speaker unit with the decorative cover, the speaker system can be considered as preventing direct contact between people or objects and the speaker unit.

[0025] However, there is a trade-off between the aforementioned effects and the acoustic performance of the sound emitted by the speaker. For example, if the structure is designed to make the speaker unit less visible or to prevent direct contact between people or objects and the speaker unit, the opening area of ​​the decorative cover needs to be reduced, which results in a decrease in the acoustic performance of the sound emitted by the speaker. On the other hand, if the acoustic performance of the sound emitted by the speaker is to be improved, the opening area of ​​the decorative cover needs to be increased, which again results in a decrease in the visibility of the speaker unit or the prevention of direct contact between people or objects and the speaker unit.

[0026] Therefore, the inventors of this application have discovered a building material, as shown below, that can simultaneously improve the appearance and the acoustic performance of the sound emitted by the loudspeaker, and also function as a loudspeaker system.

[0027] One aspect of the building material disclosed herein is a building material facing a first space, the building material comprising: a plate-shaped structure having an opening; a first loudspeaker disposed in a second space opposite to the first space and separated from the structure, positioned opposite the opening; and a three-dimensional mesh structure disposed between the structure and the first loudspeaker, composed of fibrous components intertwined in a three-dimensional manner.

[0028] Therefore, by placing a three-dimensional mesh structure between the main structure and the first speaker, the first speaker can be prevented from being seen by the naked eye. Furthermore, the three-dimensional mesh structure has high acoustic transmittance, so even when placed in front of the first speaker, it is unlikely to degrade the speaker's acoustic performance. Thus, it is possible to achieve both improvements in the appearance of the building materials and improvements in the acoustic performance of the sound emitted by the speaker.

[0029] Alternatively, the surface of the aforementioned three-dimensional mesh structure may have a second color, the second color of which is calculated based on the first color of the surface of the aforementioned first spatial side of the structure, and the color difference is smaller than a specified threshold.

[0030] Therefore, it can make the first speaker less conspicuous and further improve the appearance of the building materials.

[0031] Alternatively, the aforementioned three-dimensional mesh structure may be made of resin, metal, and glass.

[0032] Alternatively, the aforementioned three-dimensional mesh structure may be made of transparent or translucent materials.

[0033] Alternatively, it may also include a light source disposed on the opposite side of the three-dimensional mesh structure and positioned opposite the opening.

[0034] Therefore, by emitting light from the light source, light can be projected into the first space through the opening. This makes the first speaker less conspicuous and further improves the appearance of the building materials.

[0035] Alternatively, the volume of the aforementioned three-dimensional mesh structure may be less than 10% of the volume of the third space occupied by the aforementioned three-dimensional mesh structure.

[0036] Therefore, the three-dimensional mesh structure can effectively allow the sound of the speaker to pass through.

[0037] Alternatively, it may also include a second speaker disposed in the second space at a position opposite to the opening, with the three-dimensional mesh structure disposed between the structure and the first and second speakers.

[0038] Therefore, it is possible to achieve both improvements in the appearance of building materials and improvements in the acoustic performance of the sound emitted by the first and second speakers respectively.

[0039] Alternatively, the reproduction frequency band of the first loudspeaker and the reproduction frequency band of the second loudspeaker may be the same.

[0040] Therefore, even if the emitted sound is from a multi-channel audio source, the audio performance can be improved.

[0041] Alternatively, the reproduction frequency band of the first loudspeaker and the reproduction frequency band of the second loudspeaker may be different from each other.

[0042] Therefore, even if the emitted sound has a wider reproduction frequency band, the audio performance can still be improved.

[0043] The following is a reference to the appendix. Figure 1 The following describes in detail one aspect of the building materials of the present invention.

[0044] Furthermore, the embodiments described below are all specific examples of the present invention. The numerical values, shapes, materials, constituent elements, arrangement and connection methods of constituent elements, steps, and order of steps shown in the following embodiments are examples only and are not intended to limit the present invention. In addition, constituent elements in the following embodiments that are not described in the independent claims representing the highest-level concept are described as arbitrary constituent elements.

[0045] (Implementation Method)

[0046] The structure of the building materials used in the relevant implementation methods will be described.

[0047] Figure 1 This is a diagram showing an example of how building materials are installed.

[0048] like Figure 1 As shown, building material 1 is installed in a state where it is embedded in the ceiling 400 of the interior. Building material 1 forms part of the ceiling 400 and faces the interior space S100. That is, the plate-like structure 14 of building material 1 on the interior space S100 side forms the surface of the interior space S100 of the ceiling 400. For example, the structure 14 of building material 1 may form a plane that is the same as the plane on the interior space S100 side of the ceiling 400. Openings 15 and 16 are formed on the structure 14. Building material 1 has a speaker inside (see below), and the sound from the speaker is emitted into the interior space S100 through the openings 15 and 16. In addition, the interior space S100 is an example of a first space.

[0049] Furthermore, building material 1 is not limited to being installed on the ceiling 400; it can also be installed in a manner that forms the same plane as the interior space S100 side of other building materials such as walls and floors. Moreover, the surface of the structure 14 of building material 1 is not limited to a plane; it can also be a curved surface. In this case, the structure 14 of building material 1 can also form a curved surface that is the same as the curved surface of the interior space S100 side of the ceiling 400. That is, as long as the structure 14 forms a surface that is the same as the surface of the interior space S100 side of the ceiling 400, it can be a surface of any shape.

[0050] Next, use Figures 2-4 The specific structure of building material 1 will be described.

[0051] Figure 2 This is a three-dimensional view of the building materials as seen from above. Figure 3 This is a three-dimensional view of the building materials as seen from below. Figure 4 yes Figure 2 The diagram shows a cross-sectional view of the building materials in section IV-IV. In this embodiment, the X-axis is the left-right direction, the Y-axis is the front-back direction, and the Z-axis is the up-down direction. The X, Y, and Z axes are orthogonal to each other. Furthermore, in each figure, the direction in which the tip of the arrow in the X, Y, and Z axes points is defined as the positive direction of each axis, and the opposite direction is defined as the negative direction of each axis.

[0052] As shown in these figures, building material 1 includes a housing 10 with openings 15 and 16, a first speaker 21 and a second speaker 22 disposed within the interior space of the housing 10, and a three-dimensional mesh structure 30. Alternatively, building material 1 may also include a cover (not shown) with high acoustic permeability covering the openings 15 and 16. The cover may be, for example, a mesh fabric.

[0053] The housing 10 has a first part 11, a second part 12, and two third parts 13. In addition, the housing 10 is made of materials such as resin, metal, and wood.

[0054] Part 11 forms an internal space S11. A three-dimensional mesh structure 30 is disposed within the internal space S11. In this embodiment, the three-dimensional mesh structure 30 is completely filled across the internal space S11. Part 11 has a structure 14 forming a surface on the negative Z-axis side. The internal space S11 has a generally cuboid shape that is flat in the Z-axis direction. Alternatively, the internal space S11 may be a generally cylindrical shape with circular bottom surfaces on both sides in the Z-axis direction and flat in the Z-axis direction.

[0055] Here, the three-dimensional mesh structure 30 is composed of fibrous components intertwined in a three-dimensional manner. The three-dimensional mesh structure 30 has a loop shape obtained by bending a continuous linear body. The three-dimensional mesh structure 30 has a smooth surface without any unevenness. The volume of the air portion contained in the three-dimensional mesh structure 30 is more than 90% of the volume of the space occupied by the three-dimensional mesh structure 30. That is, the volume of the three-dimensional mesh structure 30 is less than 10% of the volume of the space occupied by the three-dimensional mesh structure 30.

[0056] The three-dimensional mesh structure 30 is composed of resin, metal, and glass. When the three-dimensional mesh structure 30 is formed of resin, it can also be composed of thermoplastic elastic resins, such as polyester or polyethylene materials. More specifically, the three-dimensional mesh structure 30 is composed of, for example, polyester elastomers, polyamide elastomers, polyurethane elastomers, polyolefin elastomers, etc.

[0057] Alternatively, the surface of the three-dimensional mesh structure 30 may have a second color, the color difference ΔE of which is calculated based on the first color of the surface of the structure 14 on the interior space S100 side and is smaller than a predetermined threshold. This ensures that the hue of the surface of the three-dimensional mesh structure 30 is identical to the hue of the surface of the structure 14 on the interior space S100 side. Alternatively, the three-dimensional mesh structure 30 may be opaque rather than translucent.

[0058] Alternatively, the second color can be a color whose color difference ΔE between itself and the average of the multiple first colors measured at multiple locations on the surface of the structure 14 is less than a specified threshold. The first color is measured at multiple locations on the surface of the structure 14, but it can also be any single location. The color difference ΔE is an indicator of color difference, expressed as the distance between two points in a color space. For example, the color difference ΔE can be expressed as the Euclidean distance between two points in the Lab color space. Alternatively, the color difference can be a calculated value using CIE76 (ΔE76), CIE94 (ΔE94), and CIEDE2000 (ΔE00) standards established by the International Commission on Illumination (CIE).

[0059] Part 2 12 forms an internal space S12. A first loudspeaker 21 is disposed in the internal space S12. The first loudspeaker 21 may be, for example, a woofer. Two parts 13 each form an internal space S13. A second loudspeaker 22 is disposed in each internal space S13. The two second loudspeakers 22 may be, for example, full-range loudspeakers. Thus, the reproduction frequency band of the first loudspeaker 21 and the reproduction frequency band of the two second loudspeakers 22 may be different from each other.

[0060] Furthermore, the reproduction frequency bands of the two second loudspeakers 22 can also be the same. In this case, one of the two second loudspeakers 22 can be used as an example of the first loudspeaker, and the other second loudspeaker 22 can be used as an example of the second loudspeaker.

[0061] Part 11 is positioned on the side of the interior space S100 of Part 212 and the two Parts 313 (i.e., the negative Z-axis side or the lower side). The two Parts 313 are positioned in the X-axis direction, sandwiching Part 212. That is, Part 212 and the two Parts 313 are arranged in the X-axis direction on the positive Z-axis side of Part 11 in the order of one Part 313, Part 212, and the other Part 313. The interior space S12 of Part 212 and the interior space S13 of the two Parts 313 are separated by partition 18. Furthermore, the interior spaces S11 of Part 11, S12 of Part 212, and S13 of the two Parts 313 are separated by partition 17.

[0062] Three openings 17a and 17b are formed on the partition plate 17. Opening 17a is formed at a position connecting the internal space S11 and the internal space S12. At opening 17a, the first speaker 21 is fixed to the partition plate 17 such that the diaphragm (not shown) of the first speaker 21 protrudes from the opening 17a into the internal space S11. Therefore, the first speaker 21 is positioned in the internal space S12 and emits sound toward the internal space S11.

[0063] Two openings 17b are formed at positions connecting each internal space S13 to the internal space S11. At each opening 17b, each second speaker 22 is fixed to the partition plate 17 such that the diaphragm (not shown) of each second speaker 22 protrudes from each opening 17b into the internal space S11. Therefore, each second speaker 22 is positioned in each internal space S13 and emits sound toward the internal space S11.

[0064] The openings 17a and two openings 17b formed on the partition plate 17 are respectively opposite to the openings 15 and two openings 16 formed on the structure 14. Therefore, the first speaker 21 and the two second speakers 22 are respectively positioned opposite to the openings 15 and two openings 16 formed on the structure 14. Furthermore, the first speaker 21 and the two second speakers 22 are respectively positioned in the interior space S12 and two interior spaces S13 on the opposite side of the structure 14 and the interior space S100. The interior space S12 and the two interior spaces S13 are examples of the second space.

[0065] An internal space S11 is formed between the structure 14 and the partition plate 17. Therefore, the three-dimensional mesh structure 30 is disposed between the structure 14 and the first speaker 21 and the two second speakers 22.

[0066] Figure 5 This is a graph representing the acoustic properties of building materials. Figure 5 In the diagram, the dashed curve 101 represents the acoustic characteristics of the building material when there is no material in the interior space S11, the single-dot dashed curve 102 represents the acoustic characteristics of the building material when there is sound-absorbing material in the interior space S11, and the solid curve 103 represents the acoustic characteristics of the building material 1 when there is a three-dimensional mesh structure 30 in the interior space S11.

[0067] like Figure 5 As shown, in the frequency band higher than 1000Hz, the dashed line curve 102, representing the acoustic characteristics of the building material when sound-absorbing material is placed in the internal space S11, decreases compared to the dashed line curve 101, representing the acoustic characteristics of the building material when nothing is placed in the internal space S11. On the other hand, the solid line curve 103, representing the acoustic characteristics of building material 1, is approximately the same as the dashed line curve 101, representing the acoustic characteristics of the building material when nothing is placed in the internal space S11. Therefore, it can be concluded that the acoustic performance of building material 1 is approximately unchanged compared to the acoustic performance of the building material when nothing is placed in the internal space S11.

[0068] According to the building material 1 of this embodiment, since a three-dimensional mesh structure 30 is disposed between the structure 14 and the first speaker 21, the first speaker 21 can be prevented from being seen by the user in the indoor space S100. Furthermore, since the three-dimensional mesh structure 30 has high sound transmission, even if it is disposed in front of the first speaker 21, it is unlikely to cause a decrease in the sound performance of the first speaker 21. Thus, both the appearance of the building material 1 and the sound performance of the sound emitted by the first speaker 21 can be improved.

[0069] Furthermore, the building material 1 of this embodiment also includes a second speaker 22 disposed in the internal space S13 at a position opposite to the opening 16. A three-dimensional mesh structure 30 is disposed between the structure 14 and the first speaker 21 and the second speaker 22. Therefore, it is possible to achieve both an improvement in the appearance of the building material 1 and an improvement in the acoustic performance of the sound emitted by the first speaker 21 and the second speaker 22 respectively.

[0070] Furthermore, in the building material 1 of this embodiment, the surface of the three-dimensional mesh structure 30 has a second color, the color difference of which is calculated based on the first color of the surface of the interior space S100 side of the structure 14 and is smaller than a predetermined threshold. Therefore, the first speaker 21 or the second speaker 22 can be made less conspicuous, and the appearance of the building material 1 can be further improved.

[0071] Furthermore, in the building material 1 of this embodiment, the volume of the three-dimensional mesh structure 30 is less than 10% of the volume of the internal space S11 occupied by the three-dimensional mesh structure 30. Therefore, the three-dimensional mesh structure 30 can effectively allow the sound of the first speaker 21 and the second speaker 22 to pass through.

[0072] Furthermore, in the building material 1 of this embodiment, the reproduction frequency band of the first loudspeaker 21 is different from that of the second loudspeaker 22. Therefore, even if the emitted sound has a wider reproduction frequency band, the sound performance can be improved.

[0073] Furthermore, in the building material 1 of this embodiment, the reproduction frequency bands of the two second loudspeakers 22 are identical. In this case, for example, even if the emitted sound is from a sound source with multiple channels, the sound performance can be improved.

[0074] (Variation Example 1)

[0075] In the above embodiment, an example is shown where building material 1 is placed on the ceiling, so the structure 14 constitutes part of the ceiling. However, the structure 14 can also constitute part of the wall. When it constitutes part of the wall, for example, in the above embodiment, the Z-axis direction is the front-back direction and the Y-axis direction is the up-down direction. Alternatively, the structure 14 of building material 1 can also constitute part of a partition.

[0076] Alternatively, structure 14 may form part of the floor surface. In the case where it forms part of the floor surface, for example, in the above embodiment, the positive Z-axis direction is downward and the negative Z-axis direction is upward.

[0077] (Variation Example 2)

[0078] In the above embodiment, building material 1 has a structure having a first speaker 21 and two second speakers 22, but it can also have a structure having a single speaker.

[0079] (Variation Example 3)

[0080] In the above embodiment, the surface of the three-dimensional mesh structure 30 has a second color and has light-blocking properties, but it is not limited to this. Alternatively, the three-dimensional mesh structure 30 may be made of a transparent or translucent material. In this case, it is also possible to prevent the first speaker 21 and the two second speakers 22 from being seen by the user in the indoor space S100.

[0081] (Variation Example 4)

[0082] use Figure 6 Explain the building material 1A related to variation 4. Figure 6 It relates to building material 1A in variation example 4. Figure 2 The sectional view corresponding to the IV-IV sectional view.

[0083] In the structure of building material 1 according to the embodiment, building material 1A also includes a light source 40. The light source 40 is disposed on the side of the three-dimensional mesh structure 30 opposite to the structure 14, and is disposed at a position opposite to the opening 15. The light source 40 is, for example, an LED (Light Emitting Diode). In addition, the light source 40 is not limited to LED, but may also be a light bulb or a fluorescent lamp.

[0084] The three-dimensional mesh structure 30 is made of a transparent or translucent material. By emitting light from the light source 40, the building material 1A can direct light that has passed through the three-dimensional mesh structure 30 into the interior space S100 through the opening 15. Furthermore, by changing the color of the light from the light source 40, the opening 15 can be colored in various ways. Moreover, by making the structure 14 a transparent or translucent material, not only can the color of the opening 15 match the color emitted from the light source 40, but the color of the structure 14 can also match the color emitted from the light source 40. This makes the opening 15 less conspicuous.

[0085] Alternatively, the light source 40 may not be positioned on the side of the three-dimensional mesh structure 30 opposite to the structure 14, or it may be positioned on the side of the three-dimensional mesh structure 30 opposite to the structure 14. The light source 40 may also be positioned, for example, at the opening 15.

[0086] In addition, building material 1A may or may not have multiple light sources 40, or it may have one light source 40.

[0087] (Variation Example 5)

[0088] use Figure 7 and Figure 8 Explain the building material 1B related to variation 5. Figure 7 This is a perspective view of building material 1B in variation 5. Figure 8 This is a perspective view of the structure after removing a portion of the foliage plant 50 from building material 1B of the relevant variant example 5.

[0089] like Figure 7 and Figure 8 As shown, building material 1B includes building material 1 as described in the embodiment, multiple shelves 51 arranged in a multi-level manner on the structure 14 of building material 1, and multiple foliage plants 50 arranged on each of the multiple shelves 51. By further arranging multiple foliage plants 50 on the interior space S100 side of the structure 14 of building material 1, building material 1B can further suppress the first speaker 21 and the two second speakers 22 from being visually seen by the user in the interior space S100.

[0090] Additionally, building material 1B is disposed on the wall surface. Like building material 1, building material 1B can also be embedded in the wall surface. Furthermore, building material 1B can be installed relative to the wall surface or protrude from it.

[0091] In addition, Figure 7 and Figure 8 In this case, the structure is a container for a foliage plant 50 placed on a shelf 51, but it can also be a structure in which an opening is provided on the shelf 51 and the container for the foliage plant 50 is inserted into the opening.

[0092] Alternatively, it could be Figure 9 and Figure 10 The structure shown. Figure 9 This is a perspective view of another form of building material 1C, as seen from the front side, related to variation 5. Figure 10 This is a perspective view of the structure of another form of building material 1C from which a portion of the foliage plant 50 has been removed, viewed from the side.

[0093] like Figure 9 and Figure 10 As shown, building material 1C includes building material 1 according to the embodiment, a frame-shaped member 52 fixed to the building material 14, and a plurality of foliage plants 50 disposed on the frame-shaped member 52. The frame-shaped member 52 has two rod-shaped members 53 that support the pots of the foliage plants 50 in a horizontal direction. Therefore, a plurality of foliage plants 50 can be supported in a horizontal direction on the frame-shaped member 52 by the two rod-shaped members 53 respectively.

[0094] In addition, foliage plants 50 can be either natural plants or artificial foliage plants.

[0095] Furthermore, in the building materials 1B and 1C of the modified example 5, the surface of the interior space S100 side of the structure 14 can also be colored with the color of the leaves of the foliage plant 50.

[0096] The above description, based on embodiments, outlines building materials for one or more technical solutions of this disclosure. However, this disclosure is not limited to these embodiments. Various modifications conceived by those skilled in the art, or combinations of elements from different embodiments, are also included within the scope of one or more technical solutions of this disclosure, provided they do not depart from the spirit of the disclosure.

[0097] Industrial availability

[0098] This disclosure is useful as a building material that can simultaneously improve appearance and acoustic performance of sound emitted by loudspeakers.

[0099] Label Explanation

[0100] 1. Building materials: 1A, 1B, 1C; 10. Box body; 11. Part 1; 12. Part 2; 13. Part 3; 14. Structure; 15. Openings: 17a, 17b; 17. Partitions: 18. Divider: 21. First loudspeaker; 22. Second loudspeaker; 30. Three-dimensional mesh structure; 40. Light source; 50. Foliage plants; 51. Shelf; 52. Frame-shaped component; 53. Rod-shaped component; 101. Dashed curve; 102. Dashed-line curve; 103. Solid-line curve; S11, S12, S13. Interior space; S100. Indoor space.

Claims

1. A building material, designed for the first space. The above-mentioned building materials have the following characteristics: The box has a plate-shaped structure with an opening facing the first space, which is an interior space, and includes a first part forming the third space and a second part forming the second space. The first loudspeaker is disposed in the second space, which is on the opposite side of the first space and separated from the structure described above, at a position opposite to the opening described above; A partition plate, on which the first speaker is fixed, and having a first opening formed at a position communicating with the second space and the third space in front of the first speaker; and A three-dimensional mesh structure, disposed in the third space between the second space and the structure, is composed of fibrous components intertwined in a three-dimensional manner. The first opening mentioned above is opposite to the opening mentioned above. The volume of the aforementioned three-dimensional mesh structure is less than 10% of the volume of the aforementioned third space occupied by the aforementioned three-dimensional mesh structure, and the aforementioned three-dimensional mesh structure is filled and configured throughout the entire aforementioned third space.

2. The building material as described in claim 1, The surface of the aforementioned three-dimensional mesh structure has a second color, and the color difference calculated based on the first color of the surface of the aforementioned first spatial side of the structure is smaller than a specified threshold.

3. The building material as described in claim 1 or 2, The aforementioned three-dimensional mesh structure is composed of resin, metal, and glass.

4. The building material as described in claim 1, The aforementioned three-dimensional mesh structure is made of transparent or translucent materials.

5. The building material as described in claim 1 or 2, It also includes a light source, which is disposed on the opposite side of the three-dimensional mesh structure and positioned opposite the opening.

6. The building material as described in claim 1 or 2, It also includes a second speaker disposed in the second space at a position opposite to the opening. The aforementioned three-dimensional mesh structure is disposed between the aforementioned structure and the aforementioned first speaker and the aforementioned second speaker.

7. The building material as described in claim 6, The reproduction frequency band of the first loudspeaker and the reproduction frequency band of the second loudspeaker are the same.

8. The building material as described in claim 6, The reproduction frequency bands of the first loudspeaker and the second loudspeaker are different from each other.

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