soundproof walls

Abstract

The present invention relates to a sound insulation wall that combines sound absorption and solar power generation, and includes a plate-shaped main body (1), a plurality of solar cells (4, 14, 15, 16) disposed within the main body (1), at least one sound-absorbing material cartridge (6) filled with sound-absorbing material and disposed on at least one side of the main body (1), and devices (5, 10, 11) for fixing the main body (1) and the sound-absorbing material cartridge (6) to each other. The main body (1) has a light-transmitting surface portion (3) on one side, which allows light incident on one side of the main body (1) to reach at least some of the solar cells (4a) of the plurality of solar cells. The sound-absorbing material cartridge (6) is disposed adjacent to the light-transmitting surface portion (3) in contact with the main body and covering the further surface portion (2) of the main body (1). The further surface portion is located on the same plane as the light-transmitting surface portion (3).

Description

[Technical Field]

[0001] The present invention relates to a noise barrier comprising a plate-shaped body provided with sound-absorbing material. Such a noise barrier is used, for example, along traffic routes to reduce the radiation of noise into the surroundings. [Background technology]

[0002] Conventional photovoltaic modules (abbreviated as "PV modules") use a glass sheet as the outermost layer to protect the photoactive components, which are encapsulated in a polymer film and usually called "solar cells." For sound barriers, which must absorb a significant portion of the energy of incident sound waves, the glass thicknesses typically used for PV modules are acoustically hard and reflect rather than absorb energy, making it generally impossible to use such glass on a large scale.

[0003] Noise barriers often use porous acoustic materials (also called "sound absorbers" for short), which scatter sound waves and lose energy in the process. Such acoustic materials are usually enclosed in a metal cartridge, known as an "acoustic material cartridge," and mechanically stabilized. However, if a conventional PV module is installed in front of the acoustic material cartridge, the sound-absorbing effect of the acoustic material is lost.

[0004] Some known sound barriers use conventional PV modules and are incorporated into the conventional sound barrier. The PV modules are incorporated by mechanical connection, for example, by inserting, gluing, or screwing. However, because the conventional PV modules are incorporated into the conventional sound barrier, the sound absorption effect is significantly reduced.

[0005] Another known noise barrier incorporates modified PV modules mounted on modified acoustical material cartridges. The acoustical material cartridges have a triangular cross-section, with one side extending vertically, one side extending upward, and the remaining side extending downward. The PV modules are mounted on the upwardly extending surface of the acoustical material cartridge. In this case, the PV modules are positioned in front of the acoustical material cartridge, which forms the main body of the noise barrier, often in a vertical orientation.

[0006] Other known sound barriers do not use PV modules but instead use transparent materials such as glass or acrylic glass to make the wall transparent or translucent. Because these materials are acoustically rigid at the required thickness for safety reasons, the enclosure of the transparent plate, which is mostly non-sound-absorbing, is formed from a frame that also has the properties of a sound-absorbing cartridge to achieve a sound-absorbing effect. In this case, the frame surrounds the non-sound-absorbing area and is only present around the periphery of the non-sound-absorbing area. However, this sound barrier does not have photoactive properties. Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the above, it is an object of the present invention to design a combined sound absorbing and photovoltaic sound barrier that is easier and more cost-effective to manufacture than conventional barriers, while at the same time providing greater mechanical stability and better sound absorption than conventional barriers. [Means for solving the problem]

[0008] According to the invention, this object is achieved by a sound insulating wall as defined in claim 1. Further advantageous effects of the invention are achieved by the dependent claims.

[0009] The present invention proposes a sound barrier that combines sound absorption and solar power generation. The sound barrier has a plate-shaped main body. A plurality of solar cells are arranged on the main body. Furthermore, the main body has at least one sound-absorbing material cartridge filled with sound-absorbing material on at least one side.

[0010] The sound barrier further includes a device for connecting the main body and the sound-absorbing material cartridge to each other. The main body has at least one light-transmitting surface portion. The light-transmitting surface portion is designed to allow light incident on at least one surface of the main body to reach at least a portion of the solar cell.

[0011] The object of the present invention is achieved by positioning a sound-absorbing material cartridge adjacent to a light-transmitting surface portion so as to be in contact with the main body, and by covering a further surface portion of the main body that is located in the same plane as the light-transmitting surface portion.

[0012] In contrast to known noise barriers that combine sound-absorbing material cartridges with PV modules, the PV modules of the noise barrier according to the invention form the main body of the wall, and the sound-absorbing material cartridges are located in front of the PV modules. The noise barrier according to the invention therefore allows for quick and easy installation while at the same time providing high mechanical stability, high sound absorption and durability. The modular design allows the noise barrier to be adapted to the installation location.

[0013] According to the present invention, the body or PV module differs from conventional PV modules in two ways: on the one hand, an additional light-inactive area is intentionally left in the module area during occupancy, and on the other hand, the PV module is additionally combined with sound-absorbing elements, which improves the sound-absorbing effect of the product when used in a sound barrier.

[0014] In some embodiments of the present invention, two sound-absorbing cartridges are disposed adjacent to the light-transmitting surface portions, laterally spaced from each other, in contact with the body portion, and respectively cover the surface portions of the body portion, the surface portions covered by the sound-absorbing cartridges being flush with the light-transmitting surface portions located between the two adjacent sound-absorbing cartridges.

[0015] The noise barrier according to the present invention is more scalable, reliable and cost-effective than known noise barriers that combine sound absorption and photovoltaics.

[0016] In some embodiments of the present invention, three or more sound-absorbing cartridges are laterally spaced apart from one another and in contact with the main body, each covering a respective surface of the main body, and a plurality of light-transmitting surfaces are provided flush with the surfaces covered by the sound-absorbing cartridges, with one light-transmitting surface of the plurality of light-transmitting surfaces being located between two adjacent sound-absorbing cartridges.

[0017] In some embodiments of the invention, the main body has one or two opposing side edges. A side light-transmitting surface is disposed between the or each side edge and an adjacent sound-absorbing material cartridge. The or each side light-transmitting surface is adjacent to a surface covered by the sound-absorbing material cartridge. The or each side light-transmitting surface is flush with the surface or surfaces of the main body covered by the or each sound-absorbing material cartridge.

[0018] In some embodiments of the invention, the assembly of the sound insulating wall according to the invention is particularly simplified by the fact that the sound absorbing material cartridges are attached to the body by gluing and / or clamping. With regard to attachment by clamping, it is advantageous if the body is surrounded by a frame which fastens the sound absorbing material cartridges to the body. This frame is the preferred device for fixing the body and the sound absorbing material cartridges to each other.

[0019] In order to more effectively utilize the light incident on the sound barrier for solar power generation and at the same time obtain a better soundproofing effect than conventional methods, it is advantageous for the cross section of the sound-absorbing material cartridge to be rectangular, triangular, hexagonal or trapezoidal. For this purpose, it is advantageous for the sound-absorbing material cartridge to have an inner fold or an outer fold on the base facing the main body, and for this fold to abut against the main body.

[0020] In some embodiments of the present invention, the body includes two light-transmitting layers. One of the two light-transmitting layers includes a surface on one side of the body. The other of the two light-transmitting layers includes a surface on the opposite side of the body. A layer of solar cells is disposed between the two light-transmitting layers, and each solar cell in the first subset of solar cells is photoactive on both sides and is located in a first region of the body. The first region is laterally adjacent to the or each covered surface. Each solar cell in the second subset of solar cells is photoactive on one side and is located in a second region of the body. The second region is covered by the or each sound-absorbing material cartridge.

[0021] In an alternative embodiment, the body includes two light-transmitting layers. One of the two light-transmitting layers includes a surface on one side of the body. The other of the two light-transmitting layers includes a surface on the opposite side of the body. Two layers of solar cells are disposed between the two light-transmitting layers. Each solar cell in one solar cell layer has one or both sides photoactive and is disposed in a first region of the body. The first region is laterally adjacent to the covered surface or surfaces. Each solar cell in the other solar cell layer has one or both sides photoactive and is disposed in a second region of the body. The second region is located between the one solar cell layer and the other light-transmitting layer.

[0022] The noise barrier according to the invention is highly scalable. Thus, in some embodiments of the invention, the noise barrier can be expanded by connecting it to at least one other noise barrier having the same design. However, the noise barrier can also be part of several identical noise barriers connected to each other.

[0023] In use, the sound barrier is preferably oriented vertically, with the sound absorbing cartridges also extending perpendicularly to their length and parallel to each other, where a vertical orientation of the sound barrier is understood to include a slight inclination from the vertical in the range of about ±15°, ±10° or ±8°.

[0024] An exemplary embodiment of the invention uses an adapted PV module layout based on conventional materials and manufacturing processes, combined with a suitable design of a sound-absorbing material cartridge, combining the photoactive area and the sound-absorbing area in a single component. In this case, the two sub-elements are joined by a frame system that establishes a permanent connection between the two sub-elements, in particular by clamping or gluing or another connection technique. In the simplest case, the frame system is based on conventional frame systems for PV modules, but can also be additionally and easily adapted for this application.

[0025] In an exemplary embodiment of the invention, the front surface facing the noise source is divided into different sections, including a photoactive area, e.g. provided by encapsulated solar cells, a sound-absorbing area, e.g. provided by a metal sound-absorbing cartridge with a porous metal jacket and filled with sound-absorbing material, and additional photoinactive areas, e.g. for the mechanical connection of the different sub-elements.

[0026] In contrast to conventional modules, when designing the module layout, instead of maximizing the photoactive area as is usually the case, additional edge conditions are applied, which are explained in more detail below.

[0027] Each individual sub-element is designed to have as little impact as possible on the functioning of the other sub-elements. For this reason, the layout of the PV module is designed to intentionally create areas that are inactive to light, on which the remaining sub-elements are placed. This adjustment has great significance for the end product, since an incorrectly designed layout could lead to shading of the system during operation, which on the one hand reduces yield and on the other hand creates a safety risk due to additional stress on the shaded areas.

[0028] Similarly, sound-absorbing cartridges are designed to provide the highest possible sound absorption. This is achieved in particular by using cantilevered shapes such as triangles or trapezoids, which create an edge effect that enhances acoustics. The height and width of the shape are adjusted to achieve the best possible harmony between the visual effect (especially light blocking) and the acoustic effect.

[0029] The sound-absorbing cartridge can be allocated a projection area substantially given by the support area, which is light-shielded in the case of normal light incidence, so the module layout must provide at least this area so that it is light-inactive.

[0030] In order to mechanically attach the sound-absorbing cartridge to the body, it is essential that the sound-absorbing cartridge is designed to ensure a sufficient support area, which can be obtained, for example, by means of an additional lip or fold that is shaped or partially shaped to extend in the circumferential direction, which fold can be designed to face outwards or inwards.

[0031] In addition to the shading for normal incidence, shading for oblique incidence is also taken into account. This shading depends on the angle of the incoming light and is primarily defined by the application. For beveled (chamfered) sound-absorbing cartridges, the angle of the bevel must be compared to the desired angle of incidence to determine the projection area.

[0032] The PV module can be manufactured using conventional manufacturing processes and can use conventional glass sheets as the outermost layer.

[0033] The sound-absorbing cartridges can be manufactured using conventional manufacturing processes and filled with conventional sound-absorbing materials. In this case, it is desirable to select materials with as high a sound absorption coefficient as possible in order to achieve the highest possible overall sound absorption coefficient. However, materials with relatively low sound absorption may also be used, provided that the final product achieves the sound absorption value set using standard, recognized procedures.

[0034] The optimization can be carried out by experiment or simulation, and includes the proportion of the optically inactive area or the projected area of ​​the sound-absorbing cartridge, which adjusts the sub-elements to each other.

[0035] For the assembly of the sub-elements, the filled sound absorbing cartridge is placed on the glass plate, so that in a vertical top view the sound absorbing cartridge is aligned so that the light active surface is not covered.

[0036] A conventional PV module frame can be used to enclose the PV module and the acoustic material cartridge placed on it with a clamp, enclosing the outward facing outer fold of the acoustic material cartridge, resulting in a stable mechanical connection of the acoustic material cartridge to the body.

[0037] Alternatively, folds may be used to fasten the cartridge to the glass with a suitable adhesive. In this case, inner folds facing inward may be formed below the projection area of ​​the sound-absorbing material cartridge. This reduces the optically inactive area required for the module layout. Even when outer folds facing outward are formed, they can be combined with mechanical clamps. Of course, inner and outer folds may also be combined.

[0038] Furthermore, other techniques such as welding, soldering, brazing, etc. may be used to connect the frame and the sound-absorbing material cartridge. Therefore, the shape of the frame may be adapted to improve the stability of the product or simplify the manufacturing process. Furthermore, the frame may be adapted to suit the installation situation in the sound barrier. In such cases, the frame will be different from the frame for a conventional PV module.

[0039] In certain circumstances, it may be desirable to have the module filled with solar cells even in the non-light-active areas, which is particularly advantageous if light is also absorbed from the second side facing away from the noise source.

[0040] However, it is necessary to prevent damage to the solar cells on the side facing the noise source, so these solar cells must be connected in series independently. Alternatively, a second layer of solar cells may be incorporated into the module.

[0041] In the former case, the photoactive area adjacent to the cartridge may comprise, for example, a bifacial solar cell, whereas in the latter case this is not necessary as it is shaded by the second layer.

[0042] The sound insulating wall according to the present invention has the following effects and advantages.

[0043] By matching the layout of the sound-absorbing material cartridge and the PV module, it is possible to create a combined PV module that allows sound absorption and electrical energy generation in a single element.

[0044] Being based on established manufacturing methods allows for a high level of product reliability and rapid implementation within existing manufacturing capabilities.

[0045] Due to its combined functionality, the element requires a smaller base area compared to other cantilevered designs in which the acoustically hard glass side of the PV module faces away from the road.

[0046] The preferred clamp of the sub-element adapted for this purpose allows for quick and easy assembly while at the same time providing high mechanical stability and durability.

[0047] Since the PV module represents the base area of ​​the element, the glass plates provide a high degree of mechanical stability and a high level of protection for the encapsulated solar cells. Furthermore, manufacturing is carried out according to established processes, making it scalable, reliable and more cost-effective than those based on other designs.

[0048] By clever design of the sound absorbing cartridge and appropriate sound absorbing material, a high level of sound absorption can be achieved, with the associated acoustic effect being greater than if the projection area were provided with flat sound absorbing material.

[0049] The invention will now be explained in more detail with reference to the drawings, which show exemplary embodiments according to the invention. [Brief explanation of the drawings]

[0050] [Figure 1] FIG. 1 is a schematic top view showing the main body of a sound barrier according to the present invention formed by PV modules. [Figure 2] 2a-d are schematic cross-sectional views of different shapes of sound absorbing material cartridges in relation to their projected areas on the body. [Figure 3] 3a, b are schematic cross-sectional views of sound absorbing material cartridges with different folds. [Figure 4] FIG. 4 is a top view of the sound-absorbing material cartridge, showing a schematic representation of the frame members for fastening the sound-absorbing material cartridge. [Figure 5] 5a and 5b are schematic cross-sectional views of PV modules with different solar cell layouts. DETAILED DESCRIPTION OF THE INVENTION

[0051] As can be seen from the drawings, the sound barrier according to the present invention has a plate-shaped body 1 formed by a photovoltaic module (PV module). FIG. 1 is a schematic top view showing one side (front side) of the body 1 facing a noise source (not shown). In the illustrated example, the body 1 has a rectangular shape. The flat surface of the body is divided into a plurality of photoinactive surface portions 2, shown by hatching in FIG. 1, and a plurality of photoactive surface portions 3, shown as unhatched white areas in FIG. 1. The photoactive surface portions 3 are surface sections beneath which a plurality of electrically interconnected solar cells 4a are embedded within the body 1. The solar cells 4a may be monofacial or bifacial. In the case of monofacial solar cells 4a, the solar cells 4a respond only to light incident through the photoactive surface portions 3 to generate electrical energy. The use of bifacial solar cells will be explained in more detail below in connection with the description of FIGS. 5a and 5b. On the other hand, the light-inactive surface portions 2 are surface sections that are covered and shielded from light by components attached to the main body 1, such as the module frame 5 and the sound-absorbing material cartridges 6. Light passes through the light-inactive surface portions 2 and enters the main body 1. In FIG. 1, the light-inactive surface portions 2 arranged circumferentially along the edge of the main body 1 are covered by the module frame 5. In FIG. 1, three parallel strips of light-inactive surface portions 2 that are covered by the module frame 5 and located inside the surface portions 2 arranged circumferentially along the edge of the main body 1 are covered by the sound-absorbing material cartridges 6. The number of sound-absorbing material cartridges 6 and the number of light-inactive surface portions 2 covered thereby may be more or less than those shown in FIG. 1. The number of sound-absorbing material cartridges 6 and their arrangement on the main body 1 determine the shape and number of the light-active surface portions 3 of the main body 1. Therefore, the number of light-active surface portions 3 may be more or less than those shown in FIG. 1. Furthermore, the light-active surface portions 3 may have a shape different from that shown in FIG. 1.

[0052] 2a to 2d schematically show examples of the cross-sectional shape of the sound-absorbing material cartridge 6. In each figure, a region 9 is shown below the cross-sectional shape of the sound-absorbing material cartridge 6, projected from the sound-absorbing material cartridge 6 onto the surface of the main body 1. The sound-absorbing material cartridge 6 shown in FIG. 2a has a rectangular cross-sectional shape. The sound-absorbing material cartridge 6 shown in FIG. 2b has a hexagonal cross-sectional shape. The sound-absorbing material cartridge 6 shown in FIG. 2c has a trapezoidal cross-sectional shape. The sound-absorbing material cartridge 6 shown in FIG. 2d has a triangular cross-sectional shape. Referring to FIG. 2a, which shows an example of a sound-absorbing material cartridge 6 with a rectangular cross-sectional shape, the position of the front side 7 of the sound-absorbing material cartridge 6 when the sound barrier is assembled and the position of the support region 8 on the main body 1 are also shown. The sound-absorbing material cartridge 6 is made of metal, and a perforated aluminum sheet is preferably used for the outer wall, with porous sound-absorbing material used as the filler material for the cartridge 6.

[0053] Figures 3a and 3b show two variations of the folds 10, 11 in a sound-absorbing material cartridge 6 having a trapezoidal cross-sectional shape. The folds 10, 11 mechanically attach the sound-absorbing material cartridge 6 to the main body 1. Figure 3a shows a sound-absorbing material cartridge 6 with inner folds 10 facing inward. Figure 3b shows a sound-absorbing material cartridge 6 with outer folds 11 facing outward. Furthermore, Figures 3a and 3b show the support area 9 projected from the sound-absorbing material cartridge 6 onto the main body 1. It is clear that the projected area 9 in the case of a sound-absorbing material cartridge 6 with outer folds 11 is larger than the projected area 9 in the case of a sound-absorbing material cartridge 6 with inner folds 10.

[0054] As shown in FIG. 4, the sound-absorbing material cartridge 6 has an outer fold 11 that extends circumferentially and faces outward. The sound-absorbing material cartridge 6 is fixed to the module frame 5 by clamps at its upper and lower ends in FIG. 4. In the example shown, the upper end portion 11a of the outer fold 11 overlaps with the upper part 5a of the module frame 5, and the lower end portion 11b of the outer fold 11 overlaps with the lower part 5b of the module frame 5, thereby achieving fixation by the clamps. The fold portions 11a, 11b (upper and lower ends) of the outer fold 11 that overlap with the module frame 5 are shown hatched in FIG. 4. Fixing the outer fold 11 to the module frame 5 by clamps ensures a stable mechanical connection of the sound-absorbing material cartridge 6 to the main body 1 surrounded by the module frame 5.

[0055] 5a and 5b show schematic diagrams of two different types of arrangement of solar cells 4a, 4b, and 4c on the main body 1. These types of arrangement of solar cells 4a, 4b, and 4c are advantageous when used for solar power generation because light also shines on the sound barrier on the opposite side of the noise source.

[0056] FIG. 5a shows a schematic cross section of a portion of a sound-insulating wall. The sound-absorbing material cartridge 6 is disposed on the front side of the main body 1, facing the noise source. This front side is formed by a front protective layer 12, e.g., a glass plate. The rear protective layer 13 is disposed on the rear side of the main body 1. The rear protective layer 13 may also be formed by a glass plate. Between the two protective layers 12, 13, a layer of laterally arranged solar cells 4a, 4b is disposed. The solar cells 4a, shown without hatching, are bifacial solar cells. These solar cells are laterally offset relative to the sound-absorbing material cartridge 6. This allows light to enter through both the front protective layer 12 and the rear protective layer 13, enabling the light entering from both sides to be converted into electrical energy. The solar cells 4b, shown hatched in FIG. 5a, are disposed directly below the sound-absorbing material cartridge 6. These solar cells 4b are photoactive on one side and are oriented to receive and convert light entering through the rear protective layer 13 into electrical energy. In the configuration of solar cells 4a, 4b illustrated in Figure 5a, adjacent solar cells are not connected to each other.

[0057] The arrangement of solar cells 4a, 4c shown in FIG. 5b differs from that shown in FIG. 5a in that the solar cells 4a, 4c are arranged as two layers, one above the other, between the front protective layer 12 and the rear protective layer 13. The upper solar cell 4a in FIG. 5b is laterally offset relative to the sound-absorbing material cartridge 6 and is positioned to receive and convert light incident through the front protective layer 12 into electrical energy. The lower solar cell 4c is positioned to receive and convert light incident through the rear protective layer 13 into electrical energy. The solar cells 4a, 4c shown in FIG. 5b can be single-sided or double-sided photoactive solar cells. If these solar cells are photoactive on only one side, i.e., single-sided, they must be oriented to generate electrical energy in response to light incident from the front or rear.

[0058] The present invention is not limited to the described embodiments. Therefore, the above description should be considered illustrative rather than limiting. The following claims should be understood as a recited feature being present in at least one embodiment of the present invention. This does not exclude the presence of additional features. Where the claims and the above description refer to "first" and "second" embodiments, these designations are not used to prioritize but merely to distinguish between two similar embodiments. [Explanation of symbols]

[0059] In the drawings, the following reference numerals are used to describe the components of the present invention: 1 Main unit 2 Photoinactive surface area 3 Photoactive surface area 4a,4b,4c solar cell 5 Module Frame 5a upper part 5b lower part 6 sound-absorbing cartridges 7 Front side 8 Support area 9 Projection area 10 Inner fold 11 Outer fold 11a Top edge of fold 11b Bottom edge of fold 12 Front protective layer 13 Rear protective layer

Claims

1. A sound barrier that combines sound absorption and solar power generation, A plate-shaped main body (1), a plurality of solar cells (4, 14, 15, 16) disposed within the body (1); At least one sound-absorbing cartridge (6) arranged on at least one side of the body (1) and filled with sound-absorbing material; a device (5, 10, 11) for fixing the body (1) and the sound-absorbing material cartridge (6) to each other; Equipped with The main body (1) has a light-transmitting surface portion (3) on a first side, and the light-transmitting surface portion (3) allows light incident on the first side of the main body (1) to reach at least some of the solar cells (4 a) among the plurality of solar cells; the sound-absorbing cartridge (6) is arranged adjacent to the light-transmitting surface portion (3) so as to contact the body and cover a further surface portion (2) of the body (1); A sound insulating wall, characterized in that the further surface portion is located in the same plane as the light-transmitting surface portion (3).

2. At least two sound-absorbing cartridges (6) are arranged adjacent to the light-transmitting surface portion (3) and laterally spaced apart from each other, in contact with the body portion (1) and covering the surface portion (2) of each of the body portions (1), 2. The sound insulating wall according to claim 1, wherein the surface portion (2) covered by the sound-absorbing material cartridge (6) is located in the same plane as the light-transmitting surface portion (3) located between two adjacent sound-absorbing material cartridges (6).

3. three or more sound-absorbing cartridges (6) arranged laterally spaced apart from one another, in contact with the body (1) and covering the respective surface portions (2) of the body portions (1); a plurality of light-transmitting surface portions (3) provided on the same plane as the surface portion (2) covered by the sound-absorbing material cartridge (6); 3. The sound insulating wall according to claim 1, wherein one of the plurality of light-transmitting surface portions (3) is located between two adjacent sound-absorbing material cartridges (6).

4. The body (1) has one or two opposing lateral edges, a lateral light-transmitting surface portion (3) is arranged between the or each lateral edge and the adjacent sound-absorbing material cartridge (6); the or each lateral light-transmitting surface portion (3) is adjacent to a surface portion (2) covered by a sound-absorbing material cartridge (6); 4. The sound-insulating wall according to claim 1, wherein the or each of the side light-transmitting surface portions (3) is located in the same plane as the or each of the surface portions (3) of the main body (1) covered by the or each of the sound-absorbing material cartridges (6).

5. 5. A sound insulating wall according to any one of the preceding claims, characterized in that the or each sound absorbing material cartridge (6) is attached to the body (1) by gluing and / or clamping.

6. 6. A sound insulating wall according to any one of claims 1 to 5, characterized in that the main body (1) is surrounded by a frame (5) which attaches the or each sound absorbing material cartridge (6) to the main body (1) by means of clamps.

7. A sound insulating wall according to any one of the preceding claims, characterized in that the or each sound absorbing material cartridge (6) has a rectangular, triangular, hexagonal or trapezoidal cross section.

8. 8. A sound insulating wall according to any one of the preceding claims, characterized in that the or each sound absorbing material cartridge (6) has, at its base facing the body (1), an inner fold (10) or an outer fold (11) abutting the body (1).

9. The body (1) comprises two light-transmitting layers (12, 13), One of the two light-transmitting layers (12) includes a surface on one side of the body (1), The other of the two light-transmitting layers (13) comprises the opposite surface of the body (1), a solar cell layer (4a, 4b) is disposed between the two light-transmitting layers (12, 13); each solar cell (4 a) in the first subset of solar cells is photoactive on both sides and is located in a first region of the body (1); the first region is laterally adjacent to the or each surface portion (2) covered, each solar cell (4b) in the second subset of solar cells is photoactive on one face and is located in a second region of the body; 9. A sound insulating wall according to any one of the preceding claims, characterized in that the second area is covered by the or each sound absorbing material cartridge (6).

10. The body (1) comprises two light-transmitting layers (12, 13), One of the two light-transmitting layers (12) includes a surface on one side of the body (1), The other of the two light-transmitting layers (13) comprises the opposite surface of the body (1), Two solar cell layers (4a, 4c) are disposed between the two light-transmitting layers (12, 13), each solar cell (4 a) in one of the layers of solar cells has one or both sides photoactive and is located in a first region of the body; the first region is laterally adjacent to the or each surface portion (2) covered, each solar cell (4c) in the other of the layers of solar cells has one or both sides photoactive and is located in a second region of the body (1); The sound-insulating wall according to any one of claims 1 to 8, characterized in that the second region is located between the one layer of the solar cell (4a) and the other light-transmitting layer (13).

11. A noise barrier according to any one of claims 1 to 10, characterized in that the noise barrier is extended by connecting to at least one further noise barrier according to any one of claims 1 to 10.

12. A plurality of interconnected noise barriers, each designed according to one of claims 1 to 10.

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