Sound absorption structure for indoor decoration

Abstract

The utility model discloses a sound absorbing structure for indoor decoration, which comprises a sound absorbing layer and a facing layer, the sound absorbing layer is arranged between the facing layer and the inner surface of a building, a first cavity is arranged between the sound absorbing layer and the facing layer, a second cavity is arranged between the sound absorbing layer and the inner surface of the building, and the facing layer is provided with a sound passing gap for sound waves to pass through. The decorative surface layer and the sound absorption layer are not adhered through an adhesive, the content of formaldehyde can be greatly reduced, harm to a human body is reduced, part of sound waves penetrating through sound passing gaps of the decorative surface layer enter the porous sound absorption layer to be absorbed, and the sound absorption effect is improved. A part of sound waves penetrate through the sound absorption layer, enter the second cavity and enter the sound absorption layer again to be absorbed under reflection of the inner surface of the building, another part of the sound waves enter the first cavity after being reflected by the sound absorption layer, and most of the sound waves are reflected by the facing layer and enter the sound absorption layer again to be absorbed, so that sound propagation is effectively reduced, indoor reflection of the sound waves is reduced, and the sound absorption effect is improved. And the sound absorption and noise reduction effects are greatly improved, so that the purity of sound source information is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of interior decoration, in particular to a sound absorbing structure for interior decoration. Background Art

[0002] The inner surface of a room under interior decoration is generally made of flat and hard materials. In addition to the direct sound from the indoor sound source, people can also hear the reflected sound formed by multiple reflections on the indoor walls, which makes people more affected by noise. This is especially true in studios, recording studios, theaters, lecture halls, indoor sports stadiums and other performances, entertainment and architectural decoration sound effect places, where the reflected sound will greatly affect the hearing effect.

[0003] The common sound-absorbing panels on the market are usually single-color sound-absorbing panels attached to the wall, which have poor decorative effects. Some sound-absorbing panels are now made by gluing wood veneer, paint or spray paint on the surface of the sound-absorbing thin felt. However, such sound-absorbing panels generally have high formaldehyde content and are flat in shape, with poor decorative properties, making them difficult to meet the needs of interior decoration.

[0004] With the development of architectural acoustics and designers' increasing pursuit of interior design, the utility model proposes a new solution to the above problems, which not only ensures the sound absorption effect but also brings more possible sound absorption structures for decorative design. Utility Model Content

[0005] In order to overcome at least one of the above-mentioned shortcomings, the present invention provides a sound-absorbing structure for interior decoration. The purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] The utility model provides a sound-absorbing structure for interior decoration, which is applied to the field of interior decoration. The sound-absorbing structure for interior decoration comprises a sound-absorbing layer and a finishing layer, wherein the sound-absorbing layer is arranged between the finishing layer and the inner surface of a building, and a first cavity is arranged between the sound-absorbing layer and the finishing layer, a second cavity is arranged between the sound-absorbing layer and the inner surface of the building, a sound-transmitting gap for sound waves to pass through is arranged on the finishing layer, and the perforation rate of the finishing layer is not less than 15%.

[0007] In one possible implementation manner, the interior decoration sound-absorbing structure is formed by splicing a sound-absorbing layer and a plurality of sound-absorbing unit sheets, and the sound-absorbing unit sheets include the facing layer.

[0008] In one possible implementation manner, the sound absorbing layer is arranged in parallel with the inner surface of the building, and the sound absorbing unit sheet / the facing layer is arranged in parallel / inclined with the inner surface of the building.

[0009] In one possible implementation manner, the interior decoration sound-absorbing structure is formed by splicing together a plurality of sound-absorbing unit sheets, and the sound-absorbing unit sheets include the sound-absorbing layer and the facing layer.

[0010] In one possible implementation manner, the sound absorbing unit sheet and the inner surface of the building are arranged parallel or inclined.

[0011] In one possible implementation manner, a plurality of the sound absorbing unit sheets laid on the same plane of the inner surface of the building are arranged in parallel.

[0012] In one possible implementation, the facing layer includes one or a combination of at least two of heavy bamboo sheets, aluminum tensioned mesh, solid mesh, and solid board.

[0013] In one possible implementation manner, the solid mesh and the solid plate are made of gypsum material; or, the solid mesh and the solid plate are made of at least one of aluminum, copper, steel metal or metal alloy.

[0014] In one possible implementation, the interior decoration sound absorbing structure further includes a light strip.

[0015] The light strip is placed inside the sound absorbing unit sheet; or,

[0016] The light strip is placed between two adjacent sound absorbing unit sheets.

[0017] In one possible implementation, a sound absorbing sheet is laid on one side of the facing layer facing the inner surface of the building, the sound absorbing sheet is arranged to fit the shape of the facing layer, and the sound absorbing sheet is located outside the projection area of ​​the sound gap of the facing layer.

[0018] The beneficial technical effects of the utility model are as follows: according to the content of the present disclosure, the sound-absorbing structure for interior decoration is matched with a finishing layer and a sound-absorbing layer having a sound-passing gap. The finishing layer and the sound-absorbing layer are not adhered by an adhesive, which can greatly reduce the formaldehyde content and reduce the harm to the human body. A first cavity is formed between the finishing layer and the sound-absorbing layer. A part of the sound waves passing through the sound-passing gap of the finishing layer passes through the first cavity and enters the porous sound-absorbing layer to be absorbed and is converted into heat energy and consumed. A part of the sound waves penetrates the sound-absorbing layer and enters the second cavity, and enters the sound-absorbing layer again under the reflection of the inner surface of the building and is absorbed. Another part of the sound waves is reflected by the sound-absorbing layer and enters the first cavity, most of which are reflected by the finishing layer and enter the sound-absorbing layer again to be absorbed, which effectively reduces the propagation of sound, reduces the reflection of sound waves in the room, greatly improves the sound absorption and noise reduction effect, and thus maintains the purity of the sound source information. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the accompanying drawings, the following are given by way of example and not limitation:

[0020] Figure 1A front view of a sound absorbing layer and a finishing layer installation structure of the utility model is shown;

[0021] Figure 2 A front view of a sound-absorbing layer, a finishing layer and a light strip installation structure of the utility model is shown;

[0022] Figure 3 A front view of a sound absorbing layer and a finishing layer installation structure of the utility model is shown;

[0023] Figure 4 A three-dimensional diagram of the heavy bamboo piece and the light strip structure of the utility model is shown;

[0024] Figure 5 A bottom view of the heavy bamboo piece and light strip structure of the utility model is shown;

[0025] Figure 6 A three-dimensional diagram of the aluminum tensioned mesh structure of the utility model is shown;

[0026] Figure 7 A bottom view of the aluminum tensioned mesh structure of the utility model is shown;

[0027] Figure 8 A three-dimensional diagram of the copper mesh structure of the utility model is shown;

[0028] Fig. 9 The schematic diagram of the structure of the aluminum plate and the sound absorbing sheet of the utility model is shown;

[0029] Fig.10 A top view of the aluminum plate and sound-absorbing sheet structure of the utility model is shown.

[0030] In the figure: 1. sound-absorbing layer; 2. finishing layer; 3. light strip; 21. frame; 22. heavy bamboo sheet; 23. aluminum tensioned mesh; 24. solid mesh; 25. solid board; 26. sound-absorbing sheet. DETAILED DESCRIPTION

[0031] In the following detailed disclosure, these embodiments are fully described with reference to the drawings. In order to make the technical scheme of the utility model more clear and specific to those skilled in the art, the implementation methods described below are not limited to this. The utility model is further described in detail below in combination with the embodiments and drawings.

[0032] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0034] The utility model provides a sound absorbing structure for interior decoration, which is applied to the field of interior decoration, such as Figure 1-Figure 10 As shown, the sound-absorbing structure for interior decoration includes a sound-absorbing layer 1 and a finishing layer 2, the sound-absorbing layer 1 is placed between the finishing layer 2 and the inner surface of the building, and a first cavity is provided between the sound-absorbing layer 1 and the finishing layer 2, a second cavity is provided between the sound-absorbing layer 1 and the inner surface of the building, a sound-transmitting gap is provided on the finishing layer 2 for sound waves to pass through, and the perforation rate of the finishing layer 2 is not less than 15%.

[0035] The sound-absorbing structure for interior decoration absorbs sound by cooperating with a finishing layer 2 and a sound-absorbing layer 1 having a sound-transmitting gap. The finishing layer 2 and the sound-absorbing layer 1 are not adhered by an adhesive and are installed on a keel, which can greatly reduce the formaldehyde content and reduce the harm to the human body.

[0036] like Figure 2 and Figure 3 As shown, a first cavity is formed between the facing layer 2 and the sound absorbing layer 1 of the sound absorbing structure for interior decoration, and the sound waves emitted by the indoor sound source pass through the sound gap of the facing layer 2. A part of the sound waves passing through the sound gap of the facing layer 2 passes through the first cavity and enters the sound absorbing layer 1 to be absorbed, converted into heat energy and consumed, a part of the sound waves penetrates the sound absorbing layer 1 to enter the second cavity, and enters the sound absorbing layer 1 again to be absorbed under the reflection of the inner surface of the building, and another part of the sound waves is reflected by the sound absorbing layer 1 and then enters the first cavity, most of which are reflected by the facing layer 2 and enter the sound absorbing layer 1 again to be absorbed, thereby effectively reducing the propagation of sound, reducing the reflection of sound waves in the room, and greatly improving the sound absorption and noise reduction effect; in addition, the phase consistency and time synchronization of the sound waves when they reach the receiving end are improved, the receiving end is the human ear or microphone, etc., thereby maintaining the purity of the sound source information.

[0037] Furthermore, the sound absorbing layer 1 can be made of porous materials such as graphene, coconut palm, rock wool, foam plastic, glass fiber, polyester fiber, etc. The thickness of the sound absorbing layer 1 is preferably more than 100 mm, so that the sound waves can fully enter the pores of the sound absorbing layer 1 to be absorbed and converted into heat energy for consumption. The pore structure of the sound absorbing layer 1 can buffer and absorb the sound waves, reduce the reflection of the sound waves, and effectively reduce the propagation of the sound. Under normal circumstances, the thickness of the sound absorbing layer is more than 100 mm, which can meet the sound absorption requirements of indoor decoration.

[0038] Furthermore, the height of the first cavity is preferably above 50 mm, and the height of the second cavity is preferably above 50 mm, to ensure the propagation path of sound waves between the finishing layer 1, the sound absorbing layer 1 and the inner surface of the building. The transmission process of sound waves in the first cavity and the second cavity also produces some losses. The sound waves reflected in the cavity can enter the sound absorbing layer 1 and be absorbed, further reducing the propagation of indoor sound.

[0039] Furthermore, the sound absorption effect is mainly related to the perforation rate of the finishing layer and the material of the sound-absorbing layer 1. The perforation rate of the finishing layer 2 is usually not less than 15%. The perforation rate, pore size, arrangement method of the finishing layer 2 and the material of the sound-absorbing cotton 1 are selected according to the sound absorption effect requirements and can meet the actual use needs, thereby effectively reducing noise pollution and improving work efficiency and quality of life.

[0040] In one possible implementation, Figure 1 and Figure 2 As shown, the sound-absorbing structure for interior decoration is formed by splicing a sound-absorbing layer 1 and a plurality of sound-absorbing unit sheets, and the sound-absorbing unit sheets include a facing layer 2.

[0041] It can be understood that the facing layer 2 and the sound-absorbing layer 1 are respectively installed on the keels, the sound-absorbing layer 1 is installed on the first keel, and the sound-absorbing layer 1 can be a whole sound-absorbing material or a plurality of sound-absorbing materials spliced ​​together; the sound-absorbing unit sheet / facing layer 2 is installed on the second keel, and the sound-absorbing layer 1 is located between the sound-absorbing unit sheet / facing layer 2 and the inner surface of the building.

[0042] Further, such as Figure 1 and Figure 2 As shown, the sound absorbing layer 1 is arranged parallel to the inner surface of the building, and the sound absorbing unit sheet / facing layer 2 is arranged parallel to the inner surface of the building; or as Figure 4 As shown, the sound absorbing unit sheet / facing layer 2 is arranged obliquely to the inner surface of the building.

[0043] It is understandable that if Figure 1 and Figure 2As shown, when the sound absorbing layer 1, the sound absorbing unit sheet / facing layer 2 and the inner surface of the building are all arranged in parallel, the shapes of the first cavity and the second cavity are relatively regular, and the thicknesses of the cavities at different positions are basically the same, which can meet the decoration needs of most buildings with flat inner surfaces.

[0044] It is understandable that if Figure 1 and Figure 2 As shown, the sound absorbing layer 1 is arranged parallel to the inner surface of the building. Figure 3 As shown, the sound-absorbing unit sheet / facing layer 2 is inclined to the inner surface of the building, and a gap for sound waves to pass through is formed between two adjacent facing layers 2. The sound waves can enter the first cavity through the gap or the sound-passing gap of the facing layer 2, thereby reducing the reflection of the sound waves by the facing layer 2, allowing most of the sound waves to enter the sound-absorbing layer 1, thereby improving the noise reduction effect.

[0045] Furthermore, several sound absorbing unit sheets / finishing layers 2 laid on the same plane of the inner surface of the building are arranged in parallel, and there is partial overlap between adjacent sound absorbing unit sheets / finishing layers 2, and a part of the finishing layer 2 is located in the edge projection area of ​​the adjacent finishing layer 2 to form a visual shielding for the sound absorbing layer 1.

[0046] In one embodiment, the sound absorbing layer 1 is arranged parallel to the inner surface of the building. Figure 3 As shown, the sound-absorbing structure for interior decoration is formed by splicing a plurality of sound-absorbing unit sheets, and the sound-absorbing unit sheets include a sound-absorbing layer 1 and a facing layer 2.

[0047] It can be understood that the sound-absorbing unit sheet is composed of a sound-absorbing layer 1 and a finishing layer 2 of uniform size. The sound-absorbing layer 1 is located on the side of the finishing layer 2 close to the inner surface of the building. The sound-absorbing layer 1 and the finishing layer 2 are fixed by connecting parts, and common connecting parts such as bolts can be selected. The sound-absorbing unit sheet is installed on the keel.

[0048] Furthermore, the sound absorbing unit sheet is arranged parallel to the inner surface of the building, such as Figure 3 As shown, the sound absorbing unit sheet and the inner surface of the building are arranged at an angle.

[0049] Furthermore, a plurality of sound absorbing unit sheets laid on the same plane of the inner surface of the building are arranged in parallel.

[0050] In one possible implementation, Figure 4-Figure 10 As shown, the facing layer 2 includes a frame 21 and one or a combination of at least two of a heavy bamboo sheet 22, an aluminum tensioned mesh 23, a solid mesh 24, and a solid board 25 arranged in a cavity enclosed by the frame 21.

[0051] Among them, Figure 4 and Figure 5As shown, in this embodiment, the facing layer 2 includes a heavy bamboo piece 22 as an example. The heavy bamboo piece 22 is arranged by intervals or crosses of bamboo strips, and a sound gap is formed between several bamboo strips for sound waves to pass through. The sound permeability is excellent, and it has good sound absorption and noise reduction functions. The heavy bamboo piece 22 has a unique shape and strong decorative effect. Further, the bamboo strips are preferably 30mm to 100mm wide, and the spacing between two adjacent bamboo strips is consistent, preferably 30mm to 100mm, and the spacing can be selected to be consistent with the width of the bamboo strips to further improve the decorative effect.

[0052] Among them, Figure 6 and Figure 7 As shown, in this embodiment, the finishing layer 2 includes an aluminum tensioned mesh 23 as an example. The aluminum tensioned mesh 23 is in a grid shape, and a sound gap is formed inside the aluminum tensioned mesh 23 for sound waves to pass through. It has excellent sound permeability and good sound absorption and noise reduction functions. The aluminum tensioned mesh is designed as a standardized module, which is easy to disassemble and assemble, has high strength and is not easy to deform, and has low maintenance consumption in the later stage. Furthermore, the sound gap is a rhombus, and the rhombus is preferably about 40mm to 80mm in length A and about 20mm to 40mm in width B. While ensuring the perforation rate, it plays a role in blocking the line of sight, is easy to disassemble and assemble, and has strong decorative properties.

[0053] Among them, Figure 8 As shown, the present embodiment takes the finishing layer 2 including the solid mesh 24 as an example. The solid mesh 24 is a metal or alloy mesh, preferably a lightweight metal or alloy commonly used in decoration, including aluminum, copper, steel, etc. A sound gap is formed inside the solid mesh 24 for sound waves to pass through. The solid mesh 24 has excellent sound transmission performance and good sound absorption and noise reduction functions. The solid mesh 24 is a standardized module design, which is easy to disassemble and assemble, has high strength and is not easy to deform, and has low later maintenance consumption.

[0054] Among them, Fig. 9 and Fig.10 As shown, this embodiment takes the finishing layer 2 including a solid plate 25 as an example. The solid plate 25 is a metal or alloy plate and is provided with a sound hole. It is preferably a lightweight metal or alloy commonly used in decoration, including aluminum, copper, steel, etc., and the solid plate 25 is a standardized module design, which is easy to disassemble and assemble, and has high strength and is not easy to deform. The later maintenance consumption is low, the shielding effect is better, and it is convenient to design different colors and patterns to further improve the decorative effect.

[0055] In one possible implementation, the solid mesh 24 and the solid plate 25 are made of gypsum material; or, the solid mesh 24 and the solid plate 25 are made of at least one of aluminum, copper, steel metal or metal alloy.

[0056] In one possible implementation, Figure 2 , Figure 4 and Figure 5As shown, the sound-absorbing structure for interior decoration further includes a light strip 3, and the light strip 3 is placed inside the sound-absorbing unit sheet, or the light strip 3 is placed between two adjacent sound-absorbing unit sheets.

[0057] Among them, Figure 4 and Figure 5 As shown, in this embodiment, the light strip 3 is placed in the sound absorbing unit sheet as an example. The light strip 3 can be set on one side of the finishing layer 2, or in the gaps of the finishing layer 2, such as one side of the heavy bamboo sheet 22 or in the gap between two bamboo strips.

[0058] Among them, Figure 2 As shown, in this embodiment, the light strip 3 is placed between two adjacent sound absorbing unit sheets. The light strip 3 can be set between two adjacent sound absorbing unit sheets / facing layers 2, such as the gap between two adjacent aluminum tensioned meshes 23 / solid meshes 24 / solid plates 25.

[0059] In one possible implementation, Fig. 9 and Fig.10 As shown, a sound absorbing sheet 26 is laid on one side of the facing layer 2 facing the inner surface of the building. The sound absorbing sheet 26 is arranged to fit the shape of the facing layer 2 and is located outside the projection area of ​​the sound gap of the facing layer 2.

[0060] It can be understood that the shape and size of the sound absorbing sheet 26 are consistent with or slightly smaller than the facing layer 2, and the sound absorbing sheet 26 does not block the sound gap, so that sound waves can enter the first cavity through the sound gap.

[0061] It can be understood that the sound absorbing sheet 26 and the sound absorbing layer 1 are respectively placed at the two ends of the first cavity. Part of the sound waves reflected by the sound absorbing layer 1 can directly enter the sound absorbing sheet 26 and be absorbed, rather than just being reflected by the facing layer 2 into the sound absorbing layer 1, which can greatly improve the sound absorption effect.

[0062] During specific implementation, the shape and thickness of the sound-absorbing sheet 26 are designed according to the shape and perforation rate of the sound-transmitting gap of the finishing layer 2. When the size of a single sound-transmitting gap is large, the sound waves reflected by the sound-absorbing layer 1 can easily pass through the sound-transmitting gap of the finishing layer 2 back to the room. At this time, the thickness of the sound-absorbing sheet 26 and the inclination of the sound-transmitting gap of the sound-absorbing sheet 26 relative to the sound-transmitting gap of the finishing layer 2 are increased; the sound-transmitting gap of the sound-absorbing sheet 26 is preferably wide at the top and narrow at the bottom, and the transverse area of ​​the sound-transmitting gap of the sound-absorbing sheet 26 near the end of the sound-absorbing layer 1 is larger than the transverse area of ​​the sound-transmitting gap of the sound-absorbing sheet 26 near the end of the finishing layer 2, so as to reduce the reflection of the sound waves entering the first cavity from the room and increase the reflection of the sound waves entering the room from the first cavity, which can greatly reduce the sound waves passing through the sound-transmitting gap of the finishing layer 2 back to the room and improve the sound absorption effect.

[0063] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0065] In view of the above detailed description, these and other changes can be made to these embodiments, and this written description includes the best mode embodiments to disclose the utility model. The scope of the patent obtained by the utility model is defined by the claims, and the claims are not limited by the content of the present disclosure. The protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the scope disclosed by the utility model, according to the technical solution and its concept of the utility model, makes equivalent replacement or change, which is within the protection scope of the utility model.

Claims

1. A sound-absorbing structure for interior decoration, characterized in that: Applied in the field of interior decoration, the interior decoration sound-absorbing structure comprises a sound-absorbing layer (1) and a finishing layer (2), the sound-absorbing layer (1) is arranged between the finishing layer (2) and the inner surface of a building, a first cavity is arranged between the sound-absorbing layer (1) and the finishing layer (2), a second cavity is arranged between the sound-absorbing layer (1) and the inner surface of the building, a sound-transmitting gap is arranged on the finishing layer (2) for sound waves to pass through, and the perforation rate of the finishing layer (2) is not less than 15%.

2. The sound absorbing structure for interior decoration according to claim 1, characterized in that: The interior decoration sound-absorbing structure is formed by splicing a sound-absorbing layer (1) and a plurality of sound-absorbing unit sheets, and the sound-absorbing unit sheets include the facing layer (2).

3. The sound absorbing structure for interior decoration according to claim 2, characterized in that: The sound absorbing layer (1) is arranged parallel to the inner surface of the building; The sound absorbing unit sheet / the finishing layer (2) is arranged parallel to / inclined to the inner surface of the building.

4. The sound absorbing structure for interior decoration according to claim 1, characterized in that: The interior decoration sound-absorbing structure is formed by splicing a plurality of sound-absorbing unit sheets, and the sound-absorbing unit sheets include the sound-absorbing layer (1) and the finishing layer (2).

5. The sound absorbing structure for interior decoration according to claim 4, characterized in that: The sound absorbing unit sheet is arranged parallel to or inclined with the inner surface of the building.

6. The sound absorbing structure for interior decoration according to claim 5, characterized in that: The plurality of sound absorbing unit sheets laid on the same plane of the inner surface of the building are arranged in parallel.

7. The sound absorbing structure for interior decoration according to claim 2 or 4, characterized in that: The finishing layer (2) comprises one of heavy bamboo sheets (22), aluminum tensioned mesh (23), solid mesh (24), and solid board (25), or a combination of at least two of them.

8. The sound absorbing structure for interior decoration according to claim 7, characterized in that: The solid net (24) and the solid plate (25) are made of gypsum material; or, The solid mesh (24) and the solid plate (25) are made of at least one of aluminum, copper, and steel metals or metal alloys.

9. The sound absorbing structure for interior decoration according to claim 2 or 4, characterized in that: The interior decoration sound absorbing structure further comprises a light strip (3), The light strip (3) is placed inside the sound absorbing unit sheet; or, The light strip (3) is placed between two adjacent sound-absorbing unit sheets.

10. The sound absorbing structure for interior decoration according to claim 1, characterized in that: A sound absorbing sheet (26) is laid on one side of the finishing layer (2) facing the inner surface of the building. The sound absorbing sheet (26) is arranged to fit the shape of the finishing layer (2), and the sound absorbing sheet (26) is located outside the projection area of ​​the sound gap of the finishing layer (2).

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