Daylighting structure

Abstract

To provide a daylighting structure which can be easily constructed and enables light to be taken into an indoor space of a building efficiently.SOLUTION: A daylighting structure includes: a ceiling sheet 2 which is installed forming a bosom space K1 with a ceiling 101 of a building 100; a mirror sheet 3 provided at the ceiling 101 side of the bosom space K1; a light guide part 5 which reflects light L between a first reflection surface 3a of the mirror sheet 3 and a second reflection surface 4a of the ceiling sheet 2 to guide the light L from one side to the other side of a light guide space K2; a light emission part 7 which emits the light L from the light guide part 5 to an indoor space 102 of the building 100; and a daylighting part 6 which is located at one side of the light guide space K2 and takes the light L from the outside of the building 100 into the light guide part 5. The mirror sheet 3 is provided extending in the bosom space K1.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a daylighting structure.

Background Art

[0002] For example, there is a daylighting structure that takes in external light into a room from the ceiling or wall of a building. In a building equipped with such a daylighting structure, it is possible to achieve energy savings by using natural light such as sunlight for indoor lighting.

[0003] Further, in Patent Document 1 below, "a ceiling material is suspended and supported on the lower surface of the ceiling base portion, a ceiling soffit portion is formed between the ceiling base portion and the ceiling material, a daylighting opening portion for taking in natural light is provided in the ceiling soffit portion, and in order to guide the natural light incident on the ceiling soffit portion from the daylighting opening portion to the inside of the building, light reflecting surfaces are formed on at least the lower surface of the ceiling base portion facing the ceiling soffit portion and the upper surface of the ceiling material, and a light passing ceiling portion for passing the natural light guided to the inside of the building by the ceiling soffit portion to the room below the ceiling material is provided."

[0004] In the daylighting structure described in Patent Document 1 below, natural light enters the ceiling soffit portion from the daylighting opening portion, is guided to the inside of the building while being reflected by the respective light reflecting surfaces of the lower surface of the ceiling base portion and the upper surface of the ceiling material, and then passes through the light passing ceiling portion and is taken into the room below the ceiling material. As a result, the ceiling soffit portion serves as a light guiding path for guiding natural light into the building, eliminating the need to separately install a duct or the like for daylighting in the ceiling soffit portion, not only shortening the construction period but also keeping the cost low.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, in the daylighting structure described in Patent Document 1 mentioned above, it is necessary to form light reflecting surfaces on the lower surface of the ceiling base portion facing the ceiling soffit portion and the upper surface of the ceiling material. In this case, the process of forming the light reflecting surface on at least the lower surface of the ceiling base portion needs to be carried out at the construction site of the building. Patent Document 1 discloses a method of forming a light reflecting surface on the lower surface of the ceiling base portion or the ceiling material by applying a light reflective paint or attaching a light reflective material to the lower surface of the ceiling base portion or the ceiling material.

[0007] However, in the daylighting structure described in Patent Document 1, in addition to the operation of suspending the ceiling material from the lower surface of the ceiling base portion to form the ceiling soffit portion, the operation of forming the light reflecting surface on the lower surface of the ceiling base portion and the ceiling material described above is required.

[0008] In particular, when forming a light reflecting surface on the ceiling base portion, if there are irregularities on the ceiling base portion, it will affect the smoothness of the light reflecting surface. Furthermore, when applying a light reflective paint such as a paint containing a metallic pigment or a white paint or attaching a metal sheet or a metal vapor deposition sheet as the upper light reflecting surface, there will be a problem that the construction at the site takes time.

[0009] In addition, the ceiling soffit portion is a space where the lower surface of the ceiling base portion and the upper surface of the ceiling material face each other in parallel. For this reason, it is impossible to change the shape and angle of the light reflecting surface, and it may be difficult to efficiently guide the light incident from the daylighting opening portion to the ceiling soffit portion to the light passing ceiling portion.

[0010] The present invention has been proposed in view of such conventional circumstances, and an object thereof is to provide a daylighting structure that is easy to construct and can efficiently take in light into the interior of a building.

Means for Solving the Problems

[0011] In order to achieve the above object, the present invention provides the following means. [1] A partition material installed with a space provided between it and the ceiling or wall of a building, A first reflecting portion provided on the ceiling or wall side within the space, A second reflecting portion provided on the partition material side within the space, A light guiding portion that reflects light between the first reflecting portion and the second reflecting portion and guides light from one side of the space to the other side, A light emitting portion that emits light from the light guiding portion toward the interior of the building, Comprising a daylighting portion that is located on one side of the space and takes in light from the outside of the building into the light guiding portion, or a light source that is located on one side of the space and emits light toward the space, The first reflecting portion includes a mirror sheet extended within the space, and is characterized by a daylighting structure. [2] The mirror sheet is provided side by side between one side and the other side of the space, and is characterized by the daylighting structure according to [1] above. [3] The light emitting portion is provided between one side and the other side of the space, At a position facing the light emitting portion, the mirror sheet is extended in a curved or inclined state, and is characterized by the daylighting structure according to [1] above. [4] The second reflecting portion is a reflecting surface provided on the side of the partition material facing the space, and is characterized by the daylighting structure according to [1] above. [5] The light guiding portion constitutes a duct that partitions a light guiding space between the first reflecting portion and the second reflecting portion, and is characterized by the daylighting structure according to [1] above. [6] The light emitting portion is composed of an opening formed by removing a part of the partition material and a light transmissive material covering the opening, and is characterized by the daylighting structure according to [1] above. [7] The partition material is installed in a state of being suspended from the ceiling, and is characterized by the daylighting structure according to [1] above. [8] The partition material is a film ceiling material having a reflecting surface on the side facing the space, and is characterized by the daylighting structure according to [7] above. [Effects of the Invention]

[0012] As described above, according to the present invention, there is provided a daylighting structure that is easy to construct and can efficiently introduce light into the interior of a building.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the materials, dimensions, etc. exemplified in the following description are merely examples, and the present invention is not necessarily limited thereto, and can be appropriately changed and implemented without changing the gist thereof.

[0015] (First Embodiment) As a first embodiment of the present invention, for example, a building 100 equipped with a daylighting structure 1A shown in FIGS. 1 and 2 will be described.

[0016] Note that FIG. 1 is a cross-sectional view showing the vicinity of the ceiling 101 of the building 100 equipped with the daylighting structure 1A. FIG. 2 is a cross-sectional view showing a state where the height of the mirror sheet 3 is changed in the daylighting structure 1A.

[0017] As shown in FIG. 1, the daylighting structure 1A of the present embodiment is installed with a ceiling sheet 2 provided with a clearance space K1 between the ceiling sheet 2 and the ceiling 101 of the building 100, a first reflecting portion 3 provided on the ceiling 101 side (upper side in FIG. 1) within the clearance space K1, a second reflecting portion 4 provided on the ceiling sheet 2 side (lower side in FIG. 1) within the clearance space K1, a light guiding portion 5 that reflects light L between the first reflecting portion 3 and the second reflecting portion 4 and guides the light L from one side (left side in FIG. 1) of the clearance space K1 to the other side (right side in FIG. 1), a daylighting portion 6 that is located on one side of the clearance space K1 and takes in the light L from the outside of the building 100 to the light guiding portion 5, a light emitting portion 7 that emits the light L from the light guiding portion 5 toward the interior 102 of the building 100, and a third reflecting portion 8 that is located on the other end side of the clearance space K1 and reflects the light L guided toward the other end side of the clearance space K1 toward one side of the clearance space K1.

[0018] The ceiling sheet 2 is a film ceiling material having a second reflecting surface 4a that serves as the second reflecting portion 4 on the side (upper surface side) facing the clearance space K1. The ceiling sheet 2 is attached in a state of being extended with respect to the frame surface of the lower frame 201. The lower frame 201 is suspended and supported at the tip (lower end) side of the hanging fitting 200.

[0019] Thereby, the ceiling sheet 2 is installed in a state of being suspended from the ceiling 101 via the hanging fitting 200. Further, as a partition material, a plurality of the ceiling sheets 2 are arranged side by side in parallel with the ceiling 101 of the building 100 so as to partition the space between the ceiling 101 of the building 100 and the interior 102 of the building 100 while providing the clearance space K1 between the ceiling 101 of the building 100.

[0020] The first reflecting portion 3 is composed of a plurality of mirror sheets (hereinafter referred to as mirror sheet 3) extended in the accommodation space K1. The mirror sheet 3 is a film reflecting material having a first reflecting surface 3a serving as the first reflecting portion 3 on the side facing the accommodation space K1 (lower surface side). The mirror sheet 3 is attached in a state of being extended with respect to the frame surface of the upper frame 202. The upper frame 202 is suspended and supported on the proximal end (upper end) side of the suspension fitting 200.

[0021] As a result, the mirror sheet 3 is installed in a state of being suspended from the ceiling 101 via the suspension fitting 200. Further, a plurality of mirror sheets 3 are arranged side by side between one side and the other side of the light guiding space K2 described later, so that they are arranged parallel to the ceiling 101 of the building 100 while facing the ceiling sheet 2.

[0022] The second reflecting portion 4 is composed of a second reflecting surface 4a provided on the side (upper surface side) facing the light guiding space K2 of the plurality of ceiling sheets 2.

[0023] The light guiding portion 5 constitutes a light guiding space K2 that reflects the light L between the first reflecting surface 3a (first reflecting portion 3) of the mirror sheet 3 and the second reflecting surface 4a (second reflecting portion 4) of the ceiling sheet 2, and guides the light L from one side of the accommodation space K1 to the other side.

[0024] The daylighting portion 6 is composed of a window portion formed in the wall 103 of the building 100, and natural light L such as sunlight is taken into the light guiding portion 5 (light guiding space K2) from the outside of the building 100 through this window portion.

[0025] The light emitting portion 7 is composed of an opening 7a formed by removing a part of the ceiling sheet 2 and a translucent sheet 9 covering the opening 7a. The light emitting portion 7 is provided between one side and the other side of the light guiding space K2.

[0026] The light-transmitting sheet 9 is a film transmissive material that transmits part of the light L guided from one side to the other side of the light-guiding space K2 toward the interior 102 while diffusing it, and reflects part of the light L toward the other side of the light-guiding space K2 while diffusing it.

[0027] The light-transmitting sheet 9 is attached in a state of being extended with respect to the frame surface of the lower frame 201. As a result, the light-transmitting sheet 9 is installed in a state of being suspended from the ceiling 101 via the hanging metal fittings 200 together with the ceiling sheet 2. That is, the light-transmitting sheet 9 is configured as a light-emitting part 7 by replacing a part of the ceiling sheet 2.

[0028] The light L transmitted through the light-transmitting sheet 9 is emitted from the light-guiding part 5 toward the interior 102 of the building 100. As a result, it is possible to use the light L taken in from the daylighting part 6 as interior lighting.

[0029] In addition, in the present embodiment, although a configuration in which one light-emitting part 7 is provided between one side and the other side of the light-guiding space K2 is illustrated, it is possible to adopt a configuration in which a plurality of light-emitting parts 7 are arranged side by side at a predetermined interval between one side and the other side of the light-guiding space K2.

[0030] The third reflecting part 8 is constituted by a mirror sheet (hereinafter referred to as the mirror sheet 8) extended in the storage space K1. The mirror sheet 8 is a film reflective material having a third reflecting surface 8a serving as the third reflecting part 8 on the side facing the storage space K1 (the left surface side). The same mirror sheet as the above mirror sheet 3 can be used for the mirror sheet 8.

[0031] The mirror sheet 8 is attached in a state of being extended vertically between the lower frame 201 and the upper frame 202. As a result, the mirror sheet 8 can reflect the light L guided toward the other end side (right side) of the light-guiding space K2 at the other end side of the light-guiding part 5 (light-guiding space K2) toward one side (left side) of the light-guiding space K2 by the third reflecting surface 8a.

[0032] In the daylighting structure 1A of the present embodiment having the above-described configuration, by using natural light L such as sunlight collected from the daylighting unit 6 described above for indoor lighting of the building 100, it is possible to achieve energy savings.

[0033] In the daylighting structure 1A of the present embodiment, between the first reflecting surface 3a (first reflecting portion 3) of the mirror sheet 3 suspended via the above-described hanging fitting 200 and the second reflecting surface 4a (second reflecting portion 4) of the ceiling sheet 2, a light guiding portion 5 that guides the light L from the daylighting unit 6 to the light emitting unit 7 is configured, and the light emitting unit 7 is configured by a light transmissive sheet 9 suspended via the hanging fitting 200.

[0034] Therefore, in the daylighting structure 1A of the present embodiment, by the operation of stretching the mirror sheet 3 on the upper frame 202 attached to the proximal end (upper end) side of the above-described hanging fitting 200 and stretching the ceiling sheet 2 and the light transmissive sheet 9 on the lower frame 201 attached to the distal end (lower end) side of the hanging fitting 200, it is possible to easily perform construction.

[0035] Further, in the daylighting structure 1A of the present embodiment, by the above-described light guiding portion 5, it is possible to efficiently guide the light L collected from the daylighting unit 6 to the light emitting unit 7. Thereby, it is possible to efficiently take in the light L collected from the daylighting unit 6 into the interior 102 of the building 100.

[0036] Further, in the daylighting structure 1A of the present embodiment, as shown in FIG. 2, with respect to the cavity space K1 formed between the ceiling 101 of the above-described building 100 and the ceiling sheet 2, by changing the height of the mirror sheet 3 installed in this cavity space K1 and the height of the ceiling sheet 2, it is possible to arbitrarily adjust the position and dimensions in the height direction of the light guiding space K2 formed between the ceiling sheet 2 and the mirror sheet 3.

[0037] (Second Embodiment) Next, as a second embodiment of the present invention, a building 100 equipped with a daylighting structure 1B shown in FIGS. 3 and 4, for example, will be described.

[0038] Note that FIG. 3 is a cross-sectional view showing the vicinity of the ceiling 101 of the building 100 equipped with the daylighting structure 1B. FIG. 4 is a cross-sectional view showing a state in which the shape of the mirror sheet 3 is changed in the daylighting structure 1B. In the following description, parts equivalent to those of the building 100 equipped with the above-described daylighting structure 1A are omitted from the description and are denoted by the same reference numerals in the drawings.

[0039] In the daylighting structure 1B of the present embodiment, instead of the above-described daylighting portion 6, a configuration is provided in which a lamp 50 serving as a light source is disposed in the light guiding space K2. The lamp 50 emits light L radially from one side to the other side of the light guiding space K2.

[0040] Further, in the daylighting structure 1B of the present embodiment, as shown in FIG. 3, at a position facing the light emitting portion 7, the mirror sheet 3 is extended in a state of being convexly curved toward the light transmitting sheet 9.

[0041] On the other hand, in the daylighting structure 1B of the present embodiment, as shown in FIG. 4, at a position facing the light emitting portion 7, the mirror sheet 3 is extended in a state of being concavely curved toward the light transmitting sheet 9.

[0042] As described above, in the daylighting structure 1B of the present embodiment, the first reflecting surface 3a of the mirror sheet 3 can be formed into a curved shape by the mirror sheet 3 extended in the above-described curved state. Thereby, it is possible to efficiently emit the light L from the light emitting portion 7 toward the interior 102 of the building 100 while controlling the reflection direction of the light L reflected by the first reflecting surface 3a.

[0043] (Third Embodiment) Next, as a third embodiment of the present invention, a building 100 equipped with a daylighting structure 1C shown in FIG. 5, for example, will be described.

[0044] Note that FIG. 5 is a cross-sectional view showing the vicinity of the ceiling 101 of the building 100 equipped with the daylighting structure 1C. In the following description, parts equivalent to those of the building 100 equipped with the above-described daylighting structure 1A are omitted from the description and are denoted by the same reference numerals in the drawings.

[0045] In the daylighting structure 1C of this embodiment, as shown in FIG. 5, the light-emitting part 7 is located on the other side of the light-guiding space K2, and at a position facing this light-emitting part 7, the mirror sheet 3 has a configuration extended in an inclined state.

[0046] The mirror sheet 3 is attached in a state of being extended obliquely between the lower frame 201 and the upper frame 202. Thereby, the mirror sheet 3 can reflect the light L guided toward the other end side of the light-guiding space K2 by the first reflecting surface 3a toward the lower light-emitting part 7 at the other end side of the light-guiding part 5 (light-guiding space K2).

[0047] As described above, in the daylighting structure 1C of this embodiment, the light L reflected by the first reflecting surface 3a can be efficiently emitted from the light-emitting part 7 toward the interior 102 of the building 100 by the mirror sheet 3 extended in the inclined state described above.

[0048] (Fourth Embodiment) Next, as a fourth embodiment of the present invention, a building 100 equipped with a daylighting structure 1D shown in FIG. 6, for example, will be described.

[0049] Note that FIG. 6 is a cross-sectional view showing the vicinity of the ceiling 101 of the building 100 equipped with the daylighting structure 1D. In the following description, the description of parts equivalent to those of the building 100 equipped with the above-described daylighting structure 1A will be omitted, and the same reference numerals will be given in the drawings.

[0050] In the daylighting structure 1D of this embodiment, as shown in FIG. 6, the light-guiding part 5 constitutes a duct 20 that partitions the light-guiding space K2. The duct 20 is configured by providing a pair of mirror sheets 10 that partition the left and right sides of the light-guiding space K2 between the first reflecting surface 3a (first reflecting part 3) of the mirror sheet 3 and the second reflecting surface 4a (second reflecting part 4) of the ceiling sheet 2.

[0051] The pair of mirror sheets 10 are film reflectors having a reflecting surface 10a on the side (inner side) facing the light guiding space K2. The same mirror sheets as the above-described mirror sheet 3 can be used for the mirror sheets 10. The pair of mirror sheets 10 are attached in a state of extending vertically between the lower frame 201 and the upper frame 202. Further, the pair of mirror sheets 10 are provided side by side across one side and the other side of the light guiding space K2.

[0052] As a result, the duct 20 is composed of the ceiling sheet 2 and the mirror sheets 3 and 10 that surround the four sides of the light guiding space K2, and it is possible to efficiently guide the light L reflected by the respective reflecting surfaces 3a, 4a, and 10a inside thereof from one side of the light guiding space K2 to the other side.

[0053] As described above, in the daylighting structure 1D of the present embodiment, it is possible to efficiently emit the light L reflected inside the above-described duct 20 from the light emitting portion 7 toward the interior 102 of the building 100.

[0054] Further, in the daylighting structure 1D of the present embodiment, by configuring the above-described duct 20 with the ceiling sheet 2 and the mirror sheets 3 and 10, it is not necessary to separately install a conventional daylighting duct or the like, and the construction is also easy.

[0055] Further, the duct 20 is not limited to a linear shape, and can also be in a bent shape or a branched shape. As a result, it is possible to freely and easily set the light guiding space K2.

[0056] It should be noted that the present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0057] For example, in the daylighting structures 1A to 1D of the above-described embodiment, as the second reflecting portion 4, a configuration is exemplified in which the second reflecting surface 4a is provided on the side facing the light guiding space K2 of the ceiling sheet 2. However, separately from the ceiling sheet 2, it is also possible to adopt a configuration in which a mirror sheet serving as the second reflecting portion 4 is disposed on the side facing the light guiding space K2 of the ceiling sheet 2.

[0058] Regarding the partition material, it is not limited to the ceiling sheet 2 described above, and a ceiling board may also be used. Further, the second reflecting portion 4 may be the second reflecting surface 4a provided on the side (upper surface side) facing the recessed space K1 of the ceiling board.

[0059] Furthermore, by making the suspension fitting 200 of transparent resin, it is possible to prevent unevenness from occurring in the light L in the light guiding space K2 due to the shadow of the suspension fitting, or the shadow of the suspension fitting 200 from being reflected on the light emitting portion 7.

[0060] Similarly, by applying a plating treatment to the surface of the lower frame 201, the light L will be reflected on the surface of the lower frame 201, and it is possible to prevent unevenness from occurring in the light L in the light guiding space K2.

[0061] In the above-described embodiment, the case where the daylighting structures 1A to 1D of the present invention are applied to the ceiling 101 of the building 100 described above is exemplified. However, it is also possible to apply the daylighting structure of the present invention to the wall 103 of the building 100.

Explanation of Reference Numerals

[0062] 1A to 1D... Daylighting structure 2... Ceiling sheet (partition material) 3... First reflecting portion (mirror sheet) 3a... First reflecting surface 4... Second reflecting portion 4a... Second reflecting surface 5... Light guiding portion 6... Daylighting portion 7... Light emitting portion 8... Third reflecting portion (mirror sheet) 9... Translucent sheet 10... Mirror sheet 20... Duct 50... Lamp (light source) 100... Building 101... Ceiling 102... Interior K1... Recessed space K2... Light guiding space L... Light

Claims

1. A partition material installed with a space provided between it and the ceiling or wall of a building, A first reflecting portion provided on the ceiling or wall side within the space, A second reflecting portion provided on the partition material side within the space, A light guiding portion that reflects light between the first reflecting portion and the second reflecting portion to guide light from one side of the space to the other side, A light emitting portion that emits light from the light guiding portion toward the interior of the building, Comprising a daylighting portion located on one side of the space that takes in light from the outside of the building and directs it to the light guiding portion, or a light source located on one side of the space that emits light toward the space, The first reflecting portion includes a mirror sheet extended within the space, and is characterized by a daylighting structure.

2. The mirror sheet is provided side by side between one side and the other side of the space, and is characterized by the daylighting structure according to Claim 1.

3. The light emitting portion is provided between one side and the other side of the space, At a position facing the light emitting portion, the mirror sheet is extended in a curved or inclined state, and is characterized by the daylighting structure according to Claim 1.

4. The second reflecting portion is a reflecting surface provided on the side of the partition material facing the space, and is characterized by the daylighting structure according to Claim 1.

5. The light guiding portion constitutes a duct that partitions a light guiding space between the first reflecting portion and the second reflecting portion, and is characterized by the daylighting structure according to Claim 1.

6. The light emitting portion is composed of an opening formed by removing a part of the partition material and a light transmissive material that covers the opening, and is characterized by the daylighting structure according to Claim 1.

7. The light guiding structure according to claim 1, wherein the partition material is installed in a state of being suspended from the ceiling.

8. The light guiding structure according to claim 7, wherein the partition material is a film ceiling material having a reflective surface on a side facing the space.

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