JP2024051285A - Indirect lighting structure - Google Patents

Abstract

[Problem] To provide an indirect lighting structure suitable for absorbing sound in residential buildings such as detached houses and condominiums. [Solution] An indirect lighting structure 1 comprises a lighting fixture 2 that illuminates an indoor ceiling surface 11 or the ceiling surface 11 and a wall surface 12 with its light emitting side facing upward, a fixture 3 that hides the lighting fixture 2, and a sound-absorbing material 4 housed within the fixture 3. The fixture 3 comprises a front panel portion 31 that is spaced apart from the upper indoor wall surface 12 and forms a storage space for the sound-absorbing material 4 in the lateral direction, a bottom portion 32 that is positioned below the front panel portion 31 and supports the sound-absorbing material 4, and a support portion 33 that is positioned above the sound-absorbing material 4, between the wall surface 12 and the front panel portion 31, and supports the lighting fixture 2. [Selected Figure] Figure 1

Description

This invention relates to an indirect lighting structure with sound absorbing properties.

Patent document 1 discloses a sound-absorbing lighting fixture that is installed on the ceiling surface of a building and has a cylindrical sound-absorbing body made of a sound-absorbing material attached to surround the outer periphery of the lighting fixture.

Known types of indirect lighting include cove lighting, in which a ceiling surface 91 or a ceiling surface 91 and a wall surface 92 are illuminated from below by a lighting fixture 93, as shown in the vertical cross section of Figure 5(A); cornice lighting, in which a wall surface 92 is illuminated from above by a lighting fixture 93, as shown in the vertical cross section of Figure 5(B); and vertical lighting, in which a wall surface 92 is illuminated from the side by a lighting fixture 93, as shown in the horizontal cross section of Figure 5(C).

Japanese Utility Model Application Publication No. 5-48113

However, while the conventional sound-absorbing lighting fixtures described above are suitable for use in dome buildings with membrane roofs, such as baseball stadiums and soccer stadiums, and gymnasiums, they have the disadvantage that they are not suitable for use in residential buildings such as detached houses and apartment buildings.

The purpose of this invention is to provide an indirect lighting structure that is suitable for absorbing sound in residential buildings such as detached houses and condominiums.

The indirect lighting structure of this invention is characterized by comprising a lighting fixture that provides indirect lighting by shining light onto at least one of the ceiling and wall surfaces of an interior room, a fixture that hides the lighting fixture, and sound-absorbing material housed within the fixture.

The above configuration creates a sound-absorbing structure that utilizes fixtures that contribute to indirect lighting, making it ideal for use in residential buildings such as detached houses and condominiums without compromising the interior design.

The fixture may include a back panel that is spaced apart from the indoor wall and forms a storage space for the sound-absorbing material in the horizontal direction between the back panel and the wall, and a bottom that is located below the back panel and supports the sound-absorbing material. This provides cove lighting that radiates light upward as indirect lighting while also providing a sound-absorbing structure.

The above-mentioned panel section may have a sound-absorbing plate or an opening with sound-absorbing function. This provides a more excellent sound-absorbing effect.

Alternatively, the fixture may be located away from the ceiling surface of the room, forming a storage space for the sound-absorbing material between the fixture and the ceiling surface, and may include a lower ceiling panel that supports the sound-absorbing material. This provides cornice lighting that irradiates light downward as indirect lighting, while also providing a sound-absorbing structure.

The lower ceiling panel may have a sound-absorbing panel or openings that have sound-absorbing properties. This provides a more excellent sound-absorbing effect.

Alternatively, the fixture may have a protruding wall panel that is spaced apart from the indoor wall and forms a storage space for the sound-absorbing material in the vertical direction between the wall and the fixture. This provides vertical lighting that irradiates light horizontally as indirect lighting while also providing a sound-absorbing structure.

The protruding wall panel may have a sound-absorbing plate or an opening that has sound-absorbing properties. This provides a more excellent sound-absorbing effect.

The present invention has the effect of providing sound absorption functionality to indirect lighting structures that can be used in detached houses, apartments, etc., thereby improving sound absorption performance without compromising the interior design.

1A is an explanatory diagram showing an outline of the indirect lighting structure of the first embodiment in vertical section, and FIG. 1B is an explanatory diagram showing a modified example of the indirect lighting structure. 1A is an explanatory diagram showing an outline of the indirect lighting structure of the second embodiment in vertical section, and FIG. 1B is an explanatory diagram showing a modified example of the indirect lighting structure. 1A is an explanatory diagram showing an outline of the indirect lighting structure of the third embodiment in horizontal section, and FIG. 1B is an explanatory diagram showing a modified example of the indirect lighting structure. Figure (A) is an explanatory diagram showing an outline of a room structure having an indirect lighting structure in horizontal cross section, Figure (B) is an explanatory diagram showing a modified example of the same room structure, Figure (C) is an explanatory diagram showing another modified example of the same room structure, and Figure (D) is an explanatory diagram showing another modified example of the same room structure. 1A shows a conventional example of a cove light, FIG. 1B shows a cornice light, and FIG. 1C shows a vertical light.

(Embodiment 1)
Hereinafter, an embodiment according to one aspect of the present invention will be described with reference to the accompanying drawings.
1(A), the indirect lighting structure 1 of this embodiment includes a lighting fixture 2 that has its light-emitting side facing upward to illuminate an indoor ceiling surface 11 or the ceiling surface 11 and a wall surface 12, a fixture 3 that hides the lighting fixture 2, and a sound-absorbing material 4 housed in the fixture 3. The sound-absorbing material 4 is, for example, glass wool housed in a bag, and is deformable when housed in the fixture 3.

The fixture 3 includes a fascia 31 that is spaced apart from the wall surface 12 at the upper side of the room and forms a storage space for the sound-absorbing material 4 between the wall surface 12 in the horizontal direction, a bottom 32 that is located below the fascia 31 and supports the sound-absorbing material 4, and a support 33 that is located above the sound-absorbing material 4 between the wall surface 12 and the fascia 31 and supports the lighting fixture 2. Wallpaper is attached to the room side of the fascia 31 and the bottom 32. A gap is formed between the upper end of the fascia 31 and the ceiling surface 11, and light reflected by the ceiling surface 11 and the wall surface 12 is guided from the gap to the indoor space, and sound generated in the indoor space is guided through the gap to the sound-absorbing material 4. A plurality of lighting fixtures 2 can be arranged side by side in the horizontal direction. The lighting fixtures 2 may also be supported on the wall surface 12.

With this configuration, a sound-absorbing structure is created using the fixture 3 that contributes to indirect lighting, making it suitable for use in residential buildings such as detached houses and condominiums. Also, by using cove lighting that radiates light upward as indirect lighting, a sound-absorbing structure can be realized without compromising the interior. The fixture 3 can be made using the same work as for making cove lighting, and the sound-absorbing material 4 can be stored in the storage space during this work. Since the sound-absorbing material 4 is lightweight, there is no particular need to reinforce the fixture 3, but reinforcing ribs, etc. may be built into the storage space.

In a modified example of the indirect lighting structure 1 shown in FIG. 1B, the above-mentioned fascia portion 31 is provided with a thin plate 31A made of, for example, 3 mm thick plywood or the like as a sound-absorbing plate having a sound-absorbing function. This thin plate 31A is, for example, screwed only at the periphery to a rigid portion such as a crosspiece constituting the fascia portion 31. Wallpaper is pasted on the surface of the thin plate 31A. When sound generated in an indoor space hits the thin plate 31A, it is used as energy to vibrate the thin plate 31A and is attenuated. Glass wool, which is the sound-absorbing material 4, is generally excellent at attenuating high-pitched sounds, but has little attenuation power in the low-pitched sounds. On the other hand, the thin plate 31A is excellent at attenuating low-pitched sounds. Therefore, it is possible to attenuate a wide range of sounds from low to high. The sound-absorbing plate is not limited to the thin plate 31A, but a perforated sound-absorbing plate (resonator-type sound-absorbing mechanism) with holes can be used. Wallpaper may also be pasted on this perforated sound-absorbing plate. By placing wallpaper (membrane) on the surface of the holes, the sound absorption effect can be improved.

The above-mentioned back panel 31 may have a structure in which an opening is left without the above-mentioned sound-absorbing plate, that is, a structure in which an opening is provided and wallpaper is applied to directly cover the opening. Also, if appearance is not a concern, the above-mentioned opening may not be wallpapered, and the sound-absorbing material 4, which is decorated with wallpaper or the like, may be visible from the above-mentioned opening. In this way, it is possible to guide the sound to the sound-absorbing material 4 without reflecting it from the back panel 31 or the like, thereby enhancing the sound-absorbing effect. A lattice member may be fitted into the above-mentioned opening.

(Embodiment 2)
Hereinafter, an embodiment according to one aspect of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 2(A), the indirect lighting structure 1A of this embodiment includes a lighting fixture 2 that illuminates an indoor wall surface 12 with its light emitting side facing downward, a raised ceiling 3A as a fixture that hides the lighting fixture 2, and a sound-absorbing material 4 housed within the raised ceiling 3A.

The raised ceiling 3A is located away from the indoor ceiling surface 11, and forms a storage space for the sound-absorbing material 4 between the ceiling surface 11 and the lower ceiling plate portion 34 that supports the sound-absorbing material 4, and the standing plate portion 35 that supports the lower ceiling plate portion 34. However, in this embodiment, the standing plate portion 35 has an opening formed therein, or multiple standing plate portions 35 are arranged at intervals to form gaps, so that indoor sound is guided to the sound-absorbing material 4 through the opening or gap.

Furthermore, the lighting fixture 2 is not limited to being supported by the ceiling surface 11. The lighting fixture 2 may be supported by the lower ceiling panel portion 34 or the vertical panel portion 35.

This configuration results in a sound-absorbing structure that utilizes the raised ceiling 3A, which contributes to indirect lighting, making it suitable for use in residential buildings such as detached houses and condominiums. It also provides cornice lighting that radiates light downward as indirect lighting, while also providing a sound-absorbing structure. The sound-absorbing material 4 can be placed on the lower ceiling panel 34 when the raised ceiling 3A is being fabricated.

In the modified example of the indirect lighting structure 1A shown in FIG. 2(B), the lower ceiling panel portion 34 is made of a thin plate 34A that is a sound-absorbing plate having a sound-absorbing function. If it is difficult to support the sound-absorbing material 4 with the thin plate 34A itself, the sound-absorbing material 4 may be supported by a crosspiece, and only the peripheral portion of the thin plate 34A may be screwed under the crosspiece. Wallpaper is attached to the surface of the thin plate 34A. When sound generated in an indoor space hits the thin plate 34A, it is used as energy to vibrate the thin plate 34A and is attenuated. Since the thin plate 34A is excellent at attenuating low-frequency sounds, it is possible to attenuate a wide range of sounds from low to high frequencies. As the sound-absorbing plate, it is not limited to the thin plate 34A, but a perforated sound-absorbing plate (resonator-type sound-absorbing mechanism) with holes can be used. Wallpaper may also be attached to this perforated sound-absorbing plate. The presence of wallpaper (membrane) on the surface of the holes can enhance the sound-absorbing effect.

A part of the lower ceiling panel 34 may be structured so that it does not have the sound-absorbing panel and an opening is left. Alternatively, if appearance is not a concern, the opening may not be wallpapered, and the sound-absorbing material 4 decorated with wallpaper or the like may be visible from the opening. In this way, sound can be guided to the sound-absorbing material 4 without being reflected by the lower ceiling panel 34 or the like, thereby enhancing the sound-absorbing effect. A lattice member may be fitted into the opening.

(Embodiment 3)
Hereinafter, an embodiment according to one aspect of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 3(A), the indirect lighting structure 1B of this embodiment includes a lighting fixture 2 that illuminates an indoor wall surface 12 with its light emitting side facing horizontally, a false wall 3B as a fixture that hides the lighting fixture 2, and a sound-absorbing material 4 housed within the false wall 3B.

The built-in wall 3B is provided with a protruding wall panel portion 36 that is spaced apart from the indoor wall surface 12 and vertically forms a storage space for the sound-absorbing material 4 between the built-in wall 3B and the indoor wall surface 12. A gap is formed in the built-in wall 3B to guide the light emitted from the lighting fixture 2 arranged on the storage space side and reflected by the indoor wall surface 12 to the indoor space. Sound generated in the indoor space is guided to the sound-absorbing material 4 through the gap. The built-in wall 3B may be constructed on the center side of the wall surface 12 of the room, and the lighting fixture 2 may be arranged so that light is irradiated onto the wall surface 12 from both sides of the built-in wall 3B.

This configuration results in a sound-absorbing structure that utilizes the false wall 3B that contributes to indirect lighting, making it suitable for use in residential buildings such as detached houses and condominiums. It also provides vertical lighting that irradiates light horizontally as indirect lighting, while also providing a sound-absorbing structure. When fabricating the false wall 3B, the sound-absorbing material 4 can be placed in the storage space.

In a modified example of the indirect lighting structure 1B shown in FIG. 3B, the protruding wall panel 36 is made of a thin plate 36A as a sound-absorbing plate having a sound-absorbing function. For example, the thin plate 36A is screwed only at the periphery to a crosspiece part of the protruding wall panel 36. Wallpaper is attached to the surface of the thin plate 36A. When sound generated in the room hits the thin plate 36A, it is used as energy to vibrate the thin plate 36A and is attenuated. This makes it possible to attenuate a wide range of sounds from low to high. The sound-absorbing plate is not limited to the thin plate 36A, but may be a perforated sound-absorbing plate (resonator-type sound-absorbing mechanism) with holes. Wallpaper may also be attached to this perforated sound-absorbing plate. The presence of wallpaper (membrane) on the surface of the holes can enhance the sound-absorbing effect.

The protruding wall panel 36 may have a structure in which an opening is left without the sound-absorbing panel, i.e., a structure with an opening and wallpaper covering the opening. Alternatively, if appearance is not a concern, the opening may not be wallpapered, and the sound-absorbing material 4 decorated with wallpaper or the like may be visible from the opening. In this way, it is possible to guide sound to the sound-absorbing material 4 without reflecting it off the protruding wall panel 36 or the like, thereby enhancing the sound-absorbing effect. A lattice member may be fitted into the opening.

Next, a room structure equipped with the above-mentioned indirect lighting structure will be described. As shown in FIG. 4(A), the room structure 100 is equipped with an indirect lighting structure 1 serving as the above-mentioned cove lighting on one wall surface 12 on the living room side. In this room structure 100, the indirect lighting structure 1 is placed near the ceiling on each floor.

The room structure 101 shown in FIG. 4(B) has indirect lighting structures 1 serving as the cove lighting on a total of three walls: both opposing wall surfaces 12 on the open-ceiling living room side and one other wall surface 12. In a room with such an open-ceiling structure, the indirect lighting structure 1 may be placed near the open-ceiling. Alternatively, the indirect lighting structure 1 may be configured as a cove light that illuminates only the wall surface 12 from below, and this indirect lighting structure 1 may be placed near the height position corresponding to the second floor height. The same applies to the following room structures.

The room structure 102 shown in FIG. 4(C) is provided with indirect lighting structures 1 serving as the above-mentioned cove lighting on a total of three surfaces in an open-ceiling living-dining room, on both opposing wall surfaces 12 of the open-ceiling living-dining room and on one other wall surface 12, and also with indirect lighting structure 1A serving as the above-mentioned cornice lighting on the open-ceiling ceiling surface of the open-ceiling living-dining room.

As shown in FIG. 4(C), a rectangular raised ceiling 3A may be fabricated, and multiple lighting fixtures 2 may be supported by lower ceiling board 34 or vertical board 35 so that light is emitted downward from the three sides of the raised ceiling 3A that are close to the wall surface 12. Also, if a lighting fixture 2 is placed on one side other than the three sides, and the light emitted by this lighting fixture 2 is directed upward to illuminate the ceiling surface 11, cove lighting will be provided on this side.

The room structure 103 shown in FIG. 4(D) is an even larger open-ceiling living-dining room, and has the indirect lighting structure 1 serving as the cove lighting on both opposing wall surfaces 12 of the open-ceiling living-dining room, as well as the indirect lighting structure 1B serving as the vertical lighting on the other wall surfaces 12, and the indirect lighting structure 1A serving as the cornice lighting on the open-ceiling ceiling surface of the open-ceiling living-dining room. The indirect lighting structure 1B serving as the vertical lighting may be placed at a height exceeding the floor height of the second floor.

With this type of room structure, sound absorption is possible even in a large room, such as an open-ceiling living room. It is known that the reverberation time of a room can be calculated from the volume of the room, the surface area of the room, and the sound absorption coefficient of the room, and the larger the volume of the room, the longer the reverberation time. On the other hand, the larger the volume of the room, the more lighting is required, so by increasing the indirect lighting structures 1, 1A, and 1B as this lighting, it is possible to provide a room structure that ensures the brightness of the room while also increasing the sound absorption capacity of the room.

In the above embodiment, the indirect lighting structures 1, 1A, and 1B are placed inside a room, but they can also be placed in a corridor, entrance, etc.

Although an embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope.

Reference Signs List 1: Indirect lighting structure 1A: Indirect lighting structure 1B: Indirect lighting structure 2: Lighting fixture 3: Fixture 3A: Raised ceiling 3B: Raised wall 4: Sound absorbing material 11: Ceiling surface 12: Wall surface 31: Skirting board portion 31A: Thin plate 32: Bottom portion 33: Support portion 34: Lower ceiling board portion 34A: Thin plate 35: Standing board portion 36: Protruding wall board portion 36A: Thin plate 37: Gap portion 91: Ceiling surface 92: Wall surface 93: Lighting fixture 100: Room structure 101: Room structure 102: Room structure 103: Room structure

Claims (7)

An indirect lighting structure comprising a lighting fixture that provides indirect lighting by shining light onto at least one of the ceiling and wall surfaces of an interior space, a fixture that hides the lighting fixture, and sound-absorbing material housed within the fixture. In the indirect lighting structure described in claim 1, the fixture comprises a back panel part that is spaced apart from the indoor wall surface and forms a storage space for the sound-absorbing material in the horizontal direction between the back panel part and the wall surface, and a bottom part that is positioned below the back panel part and supports the sound-absorbing material. The indirect lighting structure according to claim 2, wherein the apron portion has a sound-absorbing plate or an opening with sound-absorbing function. The indirect lighting structure according to claim 1, characterized in that the fixture is located away from the ceiling surface of the room, forms a storage space for the sound-absorbing material between the fixture and the ceiling surface, and has a lower ceiling board portion that supports the sound-absorbing material. The indirect lighting structure according to claim 4, wherein the lower ceiling panel has a sound-absorbing panel or an opening with sound-absorbing properties. The indirect lighting structure according to claim 1, characterized in that the fixture has a protruding wall panel part that is spaced apart from the indoor wall surface and vertically forms a storage space for the sound absorbing material between the wall surface and the fixture. The indirect lighting structure according to claim 6, wherein the protruding wall panel has a sound-absorbing plate or an opening with sound-absorbing function.

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