JPWO2016104626A1 - Daylighting equipment - Google Patents

Abstract

A daylighting device according to an embodiment is provided between a light-transmitting base material, a plurality of light-transmitting portions provided on a first surface of the base material, and the plurality of daylighting portions. And a light-transmitting region through which light passes through the base material without passing through the plurality of daylighting units.

Description

The present invention relates to a daylighting apparatus.
This application claims priority based on Japanese Patent Application No. 2014-263284 for which it applied to Japan on December 25, 2014, and uses the content here.

  As a technique for efficiently taking outdoor natural light (sunlight) indoors through a window glass or the like, it has been proposed to use a daylighting film (lighting device) (for example, see Patent Document 1).

  The daylighting film is composed of a plurality of prism bodies (lighting portions) formed on one surface of a light-transmitting film (base material). The daylighting film is affixed to the window glass to irradiate the indoor ceiling, side walls, floor, etc. while changing the traveling direction of the light incident on the window glass with the prism body.

Moreover, since the light which goes to a ceiling reflects on a ceiling and illuminates a room, it becomes a substitute for illumination light.
Therefore, when such a daylighting film is used, the energy saving effect which saves the energy which the lighting installation in a building consumes during the day can be expected.

JP 2008-40025 A

  Such a daylighting device changes the traveling direction of the light upward by the daylighting unit on the surface and emits the light toward the ceiling, but a part of the light is irradiated downward or horizontally toward a person in the room. There was a problem that. Such light may become dazzling light (glare) that is uncomfortable for a person in the room.

  One aspect of the present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a daylighting apparatus that can suppress glare that is uncomfortable for a person in the room.

  A daylighting apparatus according to one embodiment of the present invention includes a base material having light permeability, a plurality of light daylighting units provided on the first surface of the base material, and the plurality of daylighting units. And a light-transmitting region in which light is transmitted through the plurality of daylighting units, and a light-transmitting region in which light is transmitted through the substrate without passing through the plurality of daylighting units. .

  In the lighting device according to one aspect of the present invention, the light transmission region may be disposed around the lighting region when viewed from the normal direction of the base material.

  The lighting device which is one embodiment of the present invention may include a plurality of the lighting regions.

  The daylighting device according to one aspect of the present invention further includes a light diffusion member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units, and at least a part of the light diffusion member May be provided at a position overlapping with the daylighting area as seen from the normal direction of the substrate.

  In the daylighting apparatus which is one embodiment of the present invention, a part of the light diffusing member may be provided at a position overlapping the light transmission region when viewed from the normal direction of the base material.

  A daylighting apparatus according to one embodiment of the present invention includes a base material having light permeability, a plurality of light daylighting units provided on the first surface of the base material, and the plurality of daylighting units. A light diffusing member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units, and the light is transmitted through the plurality of daylighting units. And a light diffusing region through which light passes through the light diffusing member, and the light diffusing region overlaps a part of the daylighting region when viewed from the normal direction of the substrate. Provided in position.

  In the lighting device according to an aspect of the present invention, the light diffusion region may be provided in the center of the lighting region when viewed from the normal direction of the base material.

  The lighting device which is one embodiment of the present invention may have a plurality of the light diffusion regions.

  The daylighting device which is one embodiment of the present invention may further include a light diffusion layer that diffuses light that is transmitted through the daylighting region and is not transmitted through the light diffusion region.

  A daylighting apparatus according to one embodiment of the present invention includes a base material having light permeability, a plurality of light daylighting units provided on the first surface of the base material, and the plurality of daylighting units. A provided gap, a first light diffusing member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units, and a second light diffusing member that diffuses light A daylighting region in which light is transmitted through the plurality of daylighting units, a first light diffusion region in which light is transmitted through the first light diffusion member, and light is in the second light diffusion. A second light diffusion region that is transmitted through the member, and when viewed from the normal direction of the substrate, the daylighting region and the first light diffusion region are provided at positions overlapping each other, The second light diffusion region is provided outside the daylighting region and the first light diffusion region.

  The lighting device which is one embodiment of the present invention may have a plurality of the first light diffusion regions.

  A daylighting apparatus according to one embodiment of the present invention includes a base material having light permeability, a plurality of light daylighting units provided on the first surface of the base material, and the plurality of daylighting units. A light emitting member that emits light through the plurality of daylighting units, and a light emitting region in which the light emitting member is provided, and the light emission The area is provided outside the daylighting area.

  The daylighting device which is one embodiment of the present invention may further include a light diffusion member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units.

  The lighting device which is one embodiment of the present invention may include a plurality of the lighting regions.

  In the lighting device which is one embodiment of the present invention, the light-emitting member may have a dimming function.

  A daylighting apparatus according to one embodiment of the present invention includes a base material having light permeability, a plurality of light daylighting units provided on the first surface of the base material, and the plurality of daylighting units. And an illuminating device that illuminates the surroundings of the daylighting area in which the plurality of daylighting units are provided.

  In the daylighting apparatus according to one aspect of the present invention, the plurality of daylighting units may be separate from the base material.

  In the daylighting apparatus which is one embodiment of the present invention, the plurality of daylighting units may be integrated with the base material.

  According to the daylighting member according to one aspect of the present invention, it is possible to obtain a sufficient daylighting function and suppress glare that is uncomfortable for a person in the room.

It is a figure which shows the whole structure of the lighting apparatus of 1st Embodiment. It is sectional drawing shown as a state which attached the lighting apparatus of 1st Embodiment to the window glass. It is a figure shown as the state which attached the lighting device of 1st Embodiment to the window glass, Comprising: It is an expanded sectional view of the lighting part of FIG. 2A. It is a perspective view of the base material of the lighting device of 1st Embodiment. It is a perspective view of an example of the substrate which can be adopted for the lighting device of the first embodiment. It is a partial expanded sectional view of Drawing 2A. It is sectional drawing of a lighting part, and is a figure which shows the control function of the light in the inside of a lighting part. It is a schematic diagram which shows an example of a room model. It is a graph which shows the relationship between background brightness | luminance and the glare parameter | index PGSV. It is a figure which shows the whole structure of the daylighting apparatus of the modification 1 of 1st Embodiment. It is a figure which shows the whole structure of the daylighting apparatus of the modification 2 of 1st Embodiment. It is a figure which shows the whole structure of the lighting apparatus of 2nd Embodiment. It is sectional drawing shown as the state which attached the lighting apparatus of 2nd Embodiment to the window glass. It is a perspective view which shows an example of a light-diffusion member. It is a perspective view of the 1st substrate of the lighting device of a 2nd embodiment. It is a perspective view of an example of the 1st substrate which can be adopted for the lighting device of a 2nd embodiment. It is a figure which shows the whole structure of the daylighting apparatus of the modification 1 of 2nd Embodiment. It is a figure which shows the whole structure of the daylighting apparatus of the modification 2 of 2nd Embodiment. It is a figure which shows the whole structure of the daylighting apparatus of the modification 3 of 2nd Embodiment. It is sectional drawing shown as the state which attached the lighting apparatus of the modification 3 of 2nd Embodiment to the window glass. It is a figure which shows as a state which attached the lighting device of the modification 3 of 2nd Embodiment to the window glass, Comprising: It is the elements on larger scale of FIG. 19A. It is a figure which shows the whole structure of the lighting apparatus of the modification 4 of 2nd Embodiment. It is a figure which shows the whole structure of the lighting apparatus of the modification 5 of 2nd Embodiment. It is sectional drawing shown as a state which attached the lighting device of the modification 6 of 2nd Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting apparatus of the modification 7 of 2nd Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting apparatus of the modification 8 of 2nd Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting device of the modification 9 of 2nd Embodiment to the window glass. It is a figure which shows the whole structure of the lighting apparatus of 3rd Embodiment. It is sectional drawing shown as the state which attached the lighting apparatus of 3rd Embodiment to the window glass. It is a figure shown as the state which attached the lighting apparatus of 3rd Embodiment to the window glass, Comprising: It is the elements on larger scale of FIG. 27A. It is a figure which shows the whole structure of the daylighting apparatus of the modification 1 of 3rd Embodiment. It is sectional drawing shown as the state which attached the lighting apparatus of the modification 1 of 3rd Embodiment to the window glass. It is a figure which shows the whole structure of the daylighting apparatus of the modification 2 of 3rd Embodiment. It is sectional drawing shown as a state which attached the lighting device of the modification 2 of 3rd Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting apparatus of the modification 3 of 3rd Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting apparatus of the modification 4 of 3rd Embodiment to the window glass. It is a figure which shows the whole structure of the lighting apparatus of 4th Embodiment. It is sectional drawing shown as a state which attached the lighting apparatus of 4th Embodiment to the window glass. It is a figure shown as the state which attached the lighting apparatus of 4th Embodiment to the window glass, Comprising: It is the elements on larger scale of FIG. 35A. It is a figure which shows the whole structure of the daylighting apparatus of the modification 1 of 4th Embodiment. It is sectional drawing shown as the state which attached the lighting device of the modification 1 of 4th Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting apparatus of the modification 2 of 4th Embodiment to the window glass. It is a figure which shows the whole structure of the lighting apparatus of 5th Embodiment. It is sectional drawing shown as the state which attached the lighting apparatus of 5th Embodiment to the window glass. It is a figure shown as the state which attached the lighting apparatus of 5th Embodiment to the window glass, Comprising: It is the elements on larger scale of FIG. 40A. It is sectional drawing shown as a state which attached the daylighting apparatus of the modification 1 of 5th Embodiment to the window glass. It is a figure which shows the whole structure of the lighting apparatus of the modification 2 of 5th Embodiment. It is sectional drawing shown as a state which attached the lighting apparatus of the modification 2 of 5th Embodiment to the window glass. It is sectional drawing shown as the state which attached the lighting apparatus of the modification 3 of 5th Embodiment to the window glass. It is sectional drawing shown as a state which attached the lighting apparatus of 6th Embodiment to the window glass. It is sectional drawing shown as the state which attached the lighting apparatus of 6th Embodiment to the window glass, and is a figure which shows the path | route of light. It is sectional drawing shown as a state which attached the lighting device of the modification 1 of 6th Embodiment to the window glass, and is a figure which shows the path | route of light. It is a figure which shows the room model provided with the lighting apparatus and the illumination light control system, Comprising: Sectional drawing which follows the J-J 'line | wire of FIG. The top view which shows the ceiling of a room model. The graph which shows the relationship between the illumination intensity of the light (natural light) daylighted indoors by the lighting apparatus, and the illumination intensity (illumination dimming system) by an indoor lighting apparatus. It is sectional drawing which shows the attachment method of the lighting device employable for each embodiment, Comprising: It is the example which suspended the lighting device on the runner of the curtain rail. It is sectional drawing which shows the attachment method of the lighting device employable for each embodiment, Comprising: It is the example which fixed the lighting device to the curtain rail with the exclusive jig | tool. It is sectional drawing which shows the example of arrangement | positioning of the lighting part and light-diffusion member which can be employ | adopted as each embodiment. It is sectional drawing which shows the example of arrangement | positioning of the lighting part which can be employ | adopted as each embodiment. It is sectional drawing which shows the example which provided the film member employable in each embodiment. It is a figure explaining another example of the positional relationship of the lighting area arrange | positioned on a base material and a light transmissive area | region based on the lighting apparatus of 1st Embodiment, Comprising: The lighting area | region and light transmissive area | region of 1st Embodiment It is a figure which shows these positional relationships. It is a figure explaining another example of the positional relationship of the lighting area and light transmission area | region arrange | positioned on a base material based on the lighting apparatus of 1st Embodiment, Comprising: The position of the lighting area and light transmission area of another example It is a figure which shows a relationship. It is a figure explaining another example of the positional relationship of the lighting area arrange | positioned on a base material and a light transmission area | region based on the lighting apparatus of 1st Embodiment, Comprising: Of the lighting area of another example, and a light transmission area | region It is a figure which shows a positional relationship.

Embodiments of the present invention will be described below with reference to the drawings. In each drawing used for the following description, the scale of each member is appropriately changed to make each member a recognizable size.
Further, in the cross-sectional view, in order to make the configuration easy to see, hatching is not shown in some cases.
Each figure shows an XYZ coordinate system in which the + Z direction is a vertically upward direction, the X-axis direction is a depth direction of the daylighting apparatus, and the + X direction is an outdoor direction. In the following description, each direction will be described based on each coordinate system as necessary.

[First Embodiment]
FIG. 1 is a diagram illustrating an overall configuration of a daylighting apparatus 1 according to the first embodiment. 2A is a cross-sectional view of the daylighting apparatus 1 attached to the window glass 100 taken along a vertical direction, and FIG. 2B is a partially enlarged view of FIG. 2A.

As shown in FIG. 2A, the daylighting apparatus 1 according to the present embodiment is an example of a daylighting apparatus that takes sunlight (external light) into the room 101 while being attached to the surface 100 a of the window glass 100 on the room 101 side. It is.
The daylighting apparatus 1 includes a light-transmitting base material 10 provided with a daylighting area SA and a light transmission area TA, and an outer frame frame 15 provided on the periphery of the base material 10.

  As shown in FIG. 1, the outer frame frame 15 is a frame body made of a rectangular aluminum alloy, resin, or the like, and holds the base material 10 in the frame. As shown in FIG. 2A, the outer frame 15 arranges the base material 10 with a predetermined gap from the window glass 100. The outer frame 15 is fixed to the window glass 100 or a wall surface around the window glass 100. The outer frame 15 may be suspended from the ceiling on the indoor 101 side of the window glass 100.

  As shown in FIG. 2A, the base material 10 has a first surface 10 a that faces the surface 100 a on the indoor 101 side of the window glass 100, and a second surface 10 b that faces the indoor 101 side. The base material 10 includes a plurality of daylighting portions 11 provided on the first surface 10 a side of the base material 10, and a gap portion 12 provided between the daylighting portions 11.

  As shown in FIG. 1, the daylighting unit 11 is provided only in the center of the base material 10 when viewed from the normal direction (X-axis direction) of the base material 10, and forms a lighting area SA. That is, the daylighting area SA means an area where the daylighting unit 11 is provided when viewed from the normal direction of the base material 10, and light that enters from the outdoor 102 and enters the room 101 is transmitted through the daylighting unit 11. It is an area. Further, a light transmission area TA is formed in an area of the base material 10 where the daylighting portion 11 is not provided. The light transmission area TA is an area through which light passes without passing through the daylighting unit 11. The light transmission area TA is arranged around the daylighting area SA when viewed from the normal direction of the substrate 10. More specifically, the light transmission area TA surrounds the daylighting area SA when viewed from the normal direction of the substrate 10.

As the base material 10 of the present embodiment, a light-transmitting base material made of a resin such as a thermoplastic polymer, a thermosetting resin, or a photopolymerizable resin is used. A light-transmitting substrate made of acrylic polymer, olefin polymer, vinyl polymer, cellulose polymer, amide polymer, fluorine polymer, urethane polymer, silicone polymer, imide polymer, or the like is used. Specifically, for example, triacetyl cellulose (TAC), polyethylene terephthalate (PET), cycloolefin polymer (COP), polycarbonate (PC), polyethylene naphthalate (PEN), polyethersulfone (PES), polyimide (PI) A light-transmitting plate material such as is preferably used. In addition, the substrate 10 may be a glass substrate. The thickness of the base material 10 is arbitrary. Also, a laminated structure in which a plurality of materials are laminated may be used.
90% or more of the total light transmittance of the base material 10 is preferable by prescription | regulation of JISK7361-1.
Thereby, sufficient transparency can be obtained.

  As shown in FIG. 2B, the daylighting unit 11 has a fine structure on the order of several tens to several hundreds μm provided on the first surface 10a of the substrate 10 so as to guide outside light (sunlight) into the room 101. It is. The daylighting units 11 are provided in a stripe shape, each extending in the Y direction (horizontal direction), and arranged parallel to each other in the Z direction (vertical direction). As for the lighting part 11, the cross-sectional shape orthogonal to a longitudinal direction makes polygonal shape.

The daylighting unit 11 in the present embodiment is a polygonal columnar structure having a hexagonal cross-sectional shape in which the shape on both sides is asymmetrical with the perpendicular Q of the base material 10 passing through the vertex q farthest from the base material 10 as the center. is there. The daylighting unit 11 has five interior angles of less than 180 ° out of the six vertices of the cross-sectional shape.
The cross-sectional shape of the daylighting unit 11 is not limited to that shown in the drawing, and the design can be appropriately changed according to the application of the daylighting apparatus 1 or the like.

Air exists in the gap portion 12 provided between the adjacent daylighting portions 11. Therefore, the refractive index of the gap 12 is approximately 1.0. By setting the refractive index of the gap portion 12 to 1.0, the critical angle at the interface between the gap portion 12 and the daylighting portion 11 is minimized.
In addition, the area | region filled with the 1st surface 10a of the base material 10, the surface 100a of the window glass 100, and the outer frame frame 15 may be satisfy | filled with an inert gas, and it is good also as a pressure-reduced state. In this case, the void portion 12 is also filled with the inert gas. By filling with an inert gas or by reducing the pressure, deterioration of the daylighting unit 11 can be suppressed.

  In addition, it is desirable that the refractive index of the base material 10 and the refractive index of the daylighting unit 11 are substantially equal. When the refractive index of the base material 10 and the refractive index of the daylighting unit 11 are greatly different, when light enters the daylighting unit 11 from the base material 10, unnecessary light is emitted at the interface between the daylighting unit 11 and the base material 10. Refraction and reflection may occur. In this case, there is a risk that a desired lighting characteristic cannot be obtained, or a problem such as a decrease in luminance occurs. By making the refractive index of the base material 10 and the refractive index of the daylighting unit 11 substantially the same, it is possible to obtain desired daylighting characteristics, increase the light utilization efficiency, and not easily irradiate the room 101 with unpleasant reflected light. .

The plurality of daylighting units 11 are made of an organic material having light transmissivity and photosensitivity such as an acrylic resin, an epoxy resin, or a silicone resin. A mixture made of a transparent resin in which a polymerization initiator, a coupling agent, a monomer, an organic solvent and the like are mixed with these resins can be used.
Further, the polymerization initiator may contain various additional components such as a stabilizer, an inhibitor, a plasticizer, a fluorescent brightening agent, a mold release agent, a chain transfer agent, and other photopolymerizable monomers. .
90% or more of the total light transmittance of the lighting part 11 is preferable by prescription | regulation of JISK7361-1. Thereby, sufficient transparency can be obtained.

FIG. 3 shows a perspective view of the substrate 10 of the present embodiment. As shown in FIG. 3, the daylighting unit 11 is provided integrally with the base material 10. Such a daylighting unit 11 can be formed by, for example, the following UV imprint method.
According to the UV imprint method, first, an ultraviolet curable resin such as acrylic resin, polycarbonate, or polypropylene is filled into a concave portion of a mold having a shape obtained by reversing the shape of the daylighting portion 11.
Next, the base material 10 is placed and pressed on the mold filled with the ultraviolet curable resin so as to press the first surface 10a side. By applying the pressure, the ultraviolet curable resin penetrates into the concave portion of the mold without a gap due to a capillary phenomenon.
Further, in this state, the ultraviolet curable resin is irradiated with UV light through the base material 10 to cure the ultraviolet curable resin, and further released from the mold. Thereby, the uneven | corrugated shape of a metal mold | die is transcribe | transferred to the 1st surface 10a side of the base material 10, and the some lighting part 11 and the space | gap part 12 appear.
Note that the mold has irregularities of the daylighting portion 11 only in the area corresponding to the daylighting area SA, and a flat surface is provided on the periphery thereof. Thereby, the light transmission area TA can be easily formed.

  The forming method described above is an example, and as a forming method of the daylighting portion 11, a hot press method can be adopted. In the hot press method, after a thermoplastic resin is applied to the first surface 10a of the substrate 10, a mold having a shape obtained by reversing the shape of the daylighting portion 11 is pressed against the applied surface. The thermoplastic resin is cured by heating in this state. By separating after cooling, the daylighting part 11 according to the shape of the mold can be formed on the first surface 10a of the substrate 10.

As another example, as shown in FIG. 4, a base material 110 in which a film 113 on which a daylighting portion 111 is formed is bonded and fixed to a main plate 114 may be employed.
In this case, the main plate 114 may be made of the same material as the base material 10 described above.
Moreover, as the film 113, what has the film base material 115 and the daylighting part 111 provided in one surface of the film base material 115 can be used. The surface of the film base 115 where the daylighting unit 111 is not provided is coated with an adhesive and fixed to the main plate 114.
As the film substrate 115, a light transmissive resin such as a thermoplastic polymer, a thermosetting resin, or a resin such as a photopolymerizable resin having a thickness of about 100 μm is used. In particular, the material of the film base 115 is preferably the same resin as that of the main plate 114 or a resin having a close refractive index. The daylighting unit 111 can be formed by performing a UV imprint method or a hot press method on the film substrate 115. As the adhesive, it is preferable to use an adhesive having a high light transmittance, and it is more preferable to use an adhesive having substantially the same refractive index as that of the film substrate 115 and the main plate 114.
The film 113 is attached to the central area CA of the main plate 114. As a result, the central area CA becomes the daylighting area SA in which the daylighting unit 111 is provided. In addition, by attaching the film 113 to the central area CA of the base 110, the light transmission area TA can be formed on the first surface 110a of the base 110 at the periphery of the daylighting area SA.

Next, based on FIGS. 5 and 6, the path of light incident on the daylighting area SA and the light transmission area TA of the daylighting apparatus 1 will be described.
As shown in FIG. 5, the light directly reaching from the sun enters the window glass 100 to which the daylighting device 1 is attached from an obliquely upper side on the outdoor 102 side. Of the sunlight, light that passes through the window glass 100 and is incident on the light transmission area TA is light L1, and light that is incident on the lighting area SA is light L2.

  As shown in FIG. 5, in the daylighting area SA, the light L <b> 2 enters the daylighting unit 11 from obliquely above, is refracted inside the daylighting unit 11, and is emitted obliquely upward in the room 101.

  Hereinafter, the light control function inside the daylighting unit 11 will be described in detail with reference to FIG. Here, for convenience of explanation, an incident point C is defined as a point at which any one light beam out of the light incident on the daylighting unit 11 enters the surface 11E (reflection surface) of the daylighting unit 11. A virtual straight line passing through the incident point C and orthogonal to the first surface 10a of the substrate 10 is defined as a straight line f. Of the two spaces having a horizontal plane including the straight line f as a boundary, the space on the side where the light incident on the incident point C exists is defined as the first space S1, and the space on the side where the light incident on the incident point C does not exist is defined as the first space S1. Let it be two spaces S2.

  As shown in FIG. 6, for example, the light L2 incident from the upwardly inclined surface 11B among the plurality of surfaces of the daylighting unit 11 is totally reflected by the surface 11E of the daylighting unit 11 and obliquely upward, that is, the first space S1. The light travels toward this side and is emitted from the surface 11A of the daylighting unit 11. The light L2 emitted from the daylighting unit 11 passes through the base material 10 and is emitted toward the ceiling of the room 101. The light emitted from the daylighting apparatus 1 toward the ceiling is reflected by the ceiling and illuminates the room, and thus is a substitute for illumination light.

  The light L2a incident from the downwardly inclined surface 11D among the plurality of surfaces of the daylighting unit 11 travels obliquely downward, that is, toward the second space S2 inside the daylighting unit 11 and the base material 10, and 101 is ejected obliquely downward. Such light L2a may become unpleasant glare for a person in the room 101.

  As shown in FIG. 5, in the light transmission area TA, the light L <b> 1 enters the lighting unit 11 from obliquely above and is emitted obliquely downward in the room 101. Since the light transmission region TA is a region where the daylighting unit 11 is not formed, the light L1 incident from the outdoor 102 passes through the window glass 100 and the base material 10 and reaches the room 101 without changing the angle. In FIG. 5, the light L <b> 1 is illustrated as entering the room 101 through the window glass 100 and the base material 10 through a linear path, but actually, both surfaces of the window glass 100 and both surfaces of the base material 10 are shown. Refracts according to the refractive index. However, the angles of light incident on and emitted from the window glass 100 and the angles of light incident on and emitted from the substrate 10 are the same. Therefore, the angle of light transmitted through the light transmission area TA does not change before and after transmission.

  Here, the lighting characteristics of the daylighting apparatus 1 using the room model 1000 shown in FIG. 7 will be described. FIG. 7 is a schematic diagram illustrating an example of the room model 1000.

  The room model 1000 is a model that assumes use of the daylighting apparatus 1 in an office, for example. Specifically, a room model 1000 shown in FIG. 7 is a room surrounded by a ceiling 1001, a floor 1002, a front side wall 1004 to which a window glass 1003 is attached, and a back side wall 1005 facing the front side wall 1004. 1006 (corresponding to the room 101 described above) is a case in which outdoor outside light L enters through the window glass 1003 obliquely from above. The lighting device 1 is attached to the upper side of the inner surface of the window glass 1003 (corresponding to the window glass 100). The external light L is incident on the window glass 1003 obliquely from above.

  The central portion of the daylighting apparatus 1 is a daylighting area SA. As shown in FIG. 7, out of the external light L incident on the window glass 1003, the light L2 incident on the lighting area SA is refracted upward to illuminate the ceiling 1001 of the room 1006. The light L2 irradiated toward the ceiling 1001 is reflected by the ceiling 1001 and illuminates the room 1006 brightly over a wide area instead of the illumination light. In this case, by turning off the lighting equipment in the room 1006, an energy saving effect that saves the energy consumed by the lighting equipment in the room 1006 during the day can be expected.

  Of the external light L incident on the window glass 1003, the light L1 incident on the light transmission area TA provided around the daylighting area SA of the daylighting apparatus 1 travels toward the floor 1002 and directly enters the room 1006. Illuminate. Therefore, the person M in the room 1006 directly observes the light L1 incident on the light transmission area TA.

  By the way, a part of the light L2a out of the light incident on the daylighting area SA is directed to the person (observer) M in the room 1006 without being irradiated on the ceiling 1001 side. Conventionally, such light L2a sometimes gives an unpleasant feeling to the person M as an unpleasant glare (hereinafter referred to as glare).

Glare can be quantitatively expressed by the brightness of the light source, the size of the light source, the position of the light source, or the brightness of the background such as the ceiling surface or wall surface. One index of unpleasant glare is the glare index PGSV.
The glare index PGSV indicates the brightness of the light source with respect to the eyes of the observer M as the light source luminance L _s [cd / m ² ], and the brightness of the surroundings (background) of the light source with respect to the direction of the eyes of the observer M as the background brightness L. _{When b} [cd / m ² ] and the solid angle of the light source in the field of view of the observer M are ω [sr], they are expressed by the following (formula 1). The glare index PGSV is an index that increases the discomfort given to the observer M as the value increases, and reduces the discomfort as the value decreases.

Here, for the room model 1000, the light source is the daylighting area SA of the daylighting apparatus 1, and the glare index PGSV of the light L2a irradiated from the daylighting area SA to the person M is obtained based on (Equation 1). Lighting area SA serving as a light source, because it is surrounded by the light transmission region TA, light transmission region TA is a background of the light source, the brightness of the light transmission region TA is the background luminance L _b.

In the room model 1000, the height t of the viewpoint of the observer M is 160 cm. The height T1 of the upper end of the daylighting area SA is 2160 cm, the height T2 of the lower end is 2100 cm, and the height dimension of the daylighting area SA is 60 cm. The width dimension of the lighting area SA (dimension in the depth direction on the paper surface) is set to 100 cm. The luminance of the lighting area SA is set to 12000 cd / m ² . Further, the distance k from the window glass 1003 to which the daylighting apparatus 1 is attached to the observer M is set to 250 cm.
Shown at this time is a graph of a relation between the background luminance L _b and glare index PGSV in FIG.

As shown in FIG. 8, by increasing the background luminance L _b, it can be seen that reducing the glare index PGSV. This can also be seen from the fact that the background luminance _Lb is the denominator in (Equation 1). That is, the light source luminance L _s, by increasing the background luminance L _b, can be reduced human glare M feel uncomfortable in the chamber 1006.

  According to the daylighting apparatus 1 of the present embodiment, the light transmission area TA is provided around the daylighting area SA. As described above, the light source that is the generation source of glare can reduce the glare index PGSV by increasing the luminance of the surrounding (background). In the light transmission area TA, since the external light L is directly directed to the person M, it can be expected that the luminance is sufficient as a background with respect to the luminance of the daylighting area SA as a glare generation source. Therefore, the glare index PGSV can be reduced by providing the light transmission area TA around the daylighting area SA as compared with the case where there is no light transmission area TA.

  Further, according to the daylighting apparatus 1 of the present embodiment, the outside light is refracted toward the ceiling 1001 of the room 1006 by the daylighting area SA, so that it is reflected by the ceiling 1001 to illuminate the room and substitute for illumination light. . Therefore, an energy saving effect that saves the energy consumed by the lighting equipment in the building during the day can be expected.

  In the daylighting apparatus 1 of the first embodiment described above, the light transmission area TA surrounds the daylighting area SA as viewed from the normal direction of the base material 10. However, even if the light transmission area TA does not surround the daylighting area SA, if the light transmission area TA is arranged in the vicinity, the light transmitted through the light transmission area TA functions as background luminance and suppresses glare in the daylighting area SA. To do. A structure in which the light transmission area TA does not surround the daylighting area SA will be described later with reference to FIGS. 55A to 55C.

[First Modification of First Embodiment]
Next, a daylighting apparatus 1A according to Modification 1 of the above-described first embodiment will be described with reference to FIG.
The basic structure of the daylighting apparatus 1A of the first modification is substantially the same as that of the first embodiment described above, but the configuration of the daylighting area is different. In addition, about the component of the same aspect as the above-mentioned 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As described above, the daylighting apparatus 1 according to the first embodiment increases the influence of background luminance and suppresses glare by providing the light transmission area TA around the daylighting area SA.
On the other hand, as shown in FIG. 9, the daylighting apparatus 1A according to the first modification includes a plurality of daylighting areas SA1, SA2, SA3, and SA4, and a light transmission area TA1 is also provided between the daylighting areas SA1 to SA4. Thus, the influence of background luminance is further increased.

  The daylighting apparatus 1 </ b> A includes a base material 10 and an outer frame 15 provided on the periphery of the base material 10. The base material 10 has four lighting areas SA1 to SA4 arranged in two rows in the horizontal direction and two columns in the vertical direction, and a light transmission area TA1 located around and between each of the lighting areas SA1 to SA4. Is provided.

  Similarly to the first embodiment, the daylighting areas SA <b> 1 to SA <b> 4 mean areas where the daylighting units 11 are provided when viewed from the normal direction of the base material 10. Further, a light transmission region TA1 is formed in a region of the base material 10 where the daylighting unit 11 is not provided. The light transmission region TA1 is a region through which light passes without passing through the daylighting unit 11. Since the light transmissive area TA1 surrounds the daylighting areas SA1 to SA4 when viewed from the normal direction of the substrate 10, the light transmissive area TA1 is also provided between the daylighting areas SA1 to SA4.

  The daylighting apparatus 1A of the first modification has the daylighting areas SA1 to SA4 divided into four parts, and the background luminance is ensured by sufficiently securing the area of the light transmission area TA1 surrounding the daylighting areas SA1 to SA4. As a result, the influence of the light transmission region TA1 can be increased. Thereby, 1 A of lighting apparatuses can suppress the glare of daylighting area | regions SA1-SA4 effectively, increasing the influence of background brightness | luminance.

[Modification 2 of the first embodiment]
Next, a daylighting apparatus 1B according to Modification 2 of the first embodiment will be described with reference to FIG.
The basic structure of the daylighting apparatus 1B according to Modification 2 is substantially the same as that of the first embodiment described above, but the configuration of the daylighting area is different. In addition, about the component of the same aspect as the above-mentioned 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, the daylighting device 1B according to the modified example 2 includes a single daylighting area SA5 provided in the center, a light transmission area TA3 arranged around the daylighting area SA5, and a daylighting area SA5. By providing the cross-shaped light transmission area TA2 in the center, the influence of background luminance is further enhanced.

  The daylighting apparatus 1 </ b> B includes a base material 10 and an outer frame 15 provided on the periphery of the base material 10. The base material 10 includes a single daylighting area SA5 provided in the center, a light transmission area TA3 provided so as to surround the daylighting area SA5, and a light transmission provided in a cross shape in the center of the daylighting area SA5. A region TA2 is provided. The light transmission area TA2 is provided so as to divide the daylighting area SA5 into four sections having substantially the same shape.

  According to the daylighting apparatus 1B of the second modification, the same effects as those of the first modification can be achieved. That is, by sufficiently securing the areas of the light transmissive areas TA2 and TA3 with respect to the daylighting area SA5, the influence of the light transmissive areas TA2 and TA3 as background luminance can be enhanced. Thereby, the daylighting apparatus 1B can increase the influence of the background luminance and effectively suppress glare in the daylighting area SA5.

[Second Embodiment]
Next, the lighting device 2 according to the second embodiment will be described. As in the first embodiment, the daylighting device 2 of the second embodiment is an example of a daylighting device that takes sunlight (external light) into the room 101 while being attached to the surface 100a of the window glass 100 on the room 101 side. It is.
The daylighting device 2 of the second embodiment is mainly different from the first embodiment described above in that it mainly includes the light diffusing member 20.
In addition, about the component of the same aspect as the above-mentioned 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 11 is a diagram showing an overall configuration of the daylighting apparatus 2 according to the second embodiment of the present invention. FIG. 12 is a cross-sectional view of the daylighting device 2 attached to the window glass 100 taken along the vertical direction.

  The daylighting device 2 includes a first base material 21 and a second base material 22 having light permeability, and an outer frame frame 25 provided on the periphery of the first base material 21 and the second base material 22. Yes.

  As shown in FIG. 11, the outer frame frame 25 is a frame having a rectangular shape. In the frame of the outer frame 25, the first base material 21 and the second base material 22 are held in order from the window glass 100 side with a gap therebetween.

  As shown in FIG. 12, the 1st base material 21 has the 1st surface 21a facing the surface 100a by the side of the room 101 of the window glass 100, and the 2nd surface 21b on the opposite side to the 1st surface 21a. Yes. The first base material 21 includes a plurality of daylighting portions 11 provided on the first surface 21 a side, and a gap portion 12 provided between the daylighting portions 11. The light diffusing member 20 is provided on the second surface 21 b of the first base material 21.

The second base material 22 includes a first surface 22a that faces the second surface 21b of the first base material 21, and a second surface 22b that is located on the opposite side of the first surface 22a and faces the interior 101 side. . The second base material 22 plays a role of protecting the light diffusion member 20 provided on the second surface 21 b of the first base material 21. Since the second base material 22 is provided, the light diffusing member 20 is not damaged. By providing the second base material 22, the space in which the light diffusing member 20 is provided can be sealed.
Thereby, when the light-diffusion member 20 gas-emits, it can suppress that gas leaks into the room | chamber interior 101. FIG. Moreover, even if the space where the light diffusing member 20 is provided is filled with an inert gas or depressurized, the light diffusing member 20 is prevented from coming into contact with air, and the deterioration of the light diffusing member 20 is suppressed. good.

  As shown in FIG. 11, the daylighting unit 11 is provided only in the center of the first base material 21 when viewed from the normal direction (X-axis direction) of the first base material 21, and forms the daylighting area SA. . Further, a light transmission area TA is formed in an area of the first base material 21 where the daylighting unit 11 is not provided. The light transmission area TA surrounds the daylighting area SA when viewed from the normal direction of the first base material 21.

  The light diffusing member 20 is provided so as to substantially overlap with the daylighting area SA when viewed from the normal direction (X-axis direction) of the first base material 21 and forms the light diffusing area KA. The light diffusion region KA is provided in a region that coincides with the daylighting region SA when viewed from the normal direction (X-axis direction) of the first base material 21. A region where the light diffusion member 20 is not provided is formed around the light diffusion region KA. The light diffusion region KA means a region where the light diffusion member 20 is provided when viewed from the normal direction of the first base material 21, and light that enters from the outdoor 102 and enters the room 101 is light diffusion member 20. It is an area | region which permeate | transmits through.

  The light diffusing member 20 has anisotropy in light diffusing characteristics, and is configured to exhibit strong light diffusibility in the Y direction (horizontal direction). For example, as shown in FIG. 13, the light diffusing member 20 includes a lenticular lens structure 27 including a support base 26 and a plurality of convex lenses 27 a provided on one surface 26 a of the support base 26. The light diffusing member 20 is provided on the second surface 21b (see FIG. 12) of the first base material 21 in a posture in which the lens surface 27b (front surface) side faces the second base material 22 side. The plurality of convex lenses 27a in the light diffusing member 20 each extend in the Z direction (vertical direction) and are arranged in parallel in the Y direction.

  The lens surface 27b of the convex lens 27a has a curvature in a horizontal plane and does not have a curvature in the vertical direction. That is, the convex lens 27a has high light diffusibility in the horizontal direction (Y direction) and does not have light diffusibility in the vertical direction (Z direction). Therefore, the light incident on the light diffusing member 20 is greatly diffused in the horizontal direction when emitted from the convex lens 27a, and is emitted without diffusing in the vertical direction.

As shown in FIG. 14, the light diffusing member 20 is bonded and fixed with the support base material 26 facing the second surface 21 b side of the first base material 21. As the adhesive used for fixing the light diffusing member 20, it is preferable to use an adhesive having high light transmittance.
The light diffusing member 20 is attached to the central area CA of the first base material 21. Accordingly, the central area CA becomes the light diffusion area KA in which the light diffusion member 20 is provided. In addition, a region that does not include the light diffusing member 20 is formed around the light diffusing member 20.

  As another example, as shown in FIG. 15, a first base 121 in which a convex lens 127a is integrally formed and a light diffusing member 120 is provided may be employed. In this case, the first base 121 is provided with the light diffusion member 120 only at the center of the second surface 121b. Thereby, the light diffusion area KA located in the center and the area where the surrounding light diffusion member 120 is not provided are formed.

  In the present embodiment, the light diffusing member 20 is a lenticular lens structure 27 including a plurality of convex lenses 27a. However, the present invention is not limited to this. For example, instead of the light diffusing member 20, an anisotropic scattering structure may be provided. As the anisotropic scattering structure, for example, a light-diffusing control film (trade name: LSD) manufactured by Luminit Corporation having a concavo-convex structure of μm level formed by a surface, relief, or hologram pattern can be used. Instead of the light diffusing member 20, a light scattering layer having an isotropic scattering structure in which particles having an aspect ratio of about 5 to 500 are dispersed in a continuous layer may be used.

Next, based on FIG. 12, the path | route of the light which injects into the lighting area SA and the light transmissive area | region TA of the lighting apparatus 2 is described.
As shown in FIG. 12, light that directly reaches from the sun enters the window glass 100 to which the daylighting device 2 is attached from an obliquely upper side on the outdoor 102 side. Of the sunlight, light that passes through the window glass 100 and is incident on the light transmission area TA is light L1, and light that is incident on the lighting area SA is light L2.

As shown in FIG. 12, in the daylighting area SA, the light L2 enters the daylighting part 11 provided on the first surface 21a of the first base material 21 from obliquely above. The light L <b> 2 is refracted inside the daylighting unit 11 and is emitted obliquely upward inside the first base material 21. The first base material 21 is provided with a light diffusion area KA so as to overlap the daylighting area SA. Therefore, the light L2 enters the light diffusion region KA provided on the second surface 21b of the first base material 21. In the light diffusion region KA, the light L2 enters the light diffusion member 20 and is diffused in the horizontal direction. Further, the light L <b> 2 passes through the second base material 22 and is emitted obliquely upward in the room 101.
Further, part of the light incident on the daylighting unit 11 is emitted obliquely downward of the room 101 as light L2a. The light L2a is diffused in the horizontal direction in the light diffusion region KA. The light L <b> 2 a may be dazzling (glare) that is uncomfortable for a person in the room 101.

  On the other hand, in the light transmission area TA, the light L1 is incident on the daylighting unit 11 obliquely from above and is emitted obliquely downward in the room 101. The light L1 is emitted into the room 101 without passing through either the daylighting unit 11 or the light diffusing member 20. The light L1 is emitted from a region surrounding a region where the light L2a that may become glare is generated. Therefore, the brightness of the light L1 has an effect of suppressing glare as background luminance.

  According to the daylighting apparatus 2 of the present embodiment, external light can be refracted upward by the daylighting unit 11 to illuminate the ceiling of the room 101 in the same manner as in the first embodiment, and can be used instead of lighting equipment. Further, by providing the light transmission area TA around the daylighting area SA, it is possible to increase the background luminance and suppress glare in the daylighting area SA.

  In addition, according to the daylighting device 2 of the present embodiment, the light diffusion region KA is provided so as to overlap the daylighting region SA, so that the light emitted from the first base material 21 is transmitted by the light diffusion member 20. Scattered and attenuated light intensity. Therefore, the intensity of the light L2a emitted obliquely downward from the daylighting device 2 is reduced as compared with the case where the light diffusing member 20 is not provided, and it becomes difficult for a person in the room 101 to feel dazzling. On the other hand, the intensity of the light L2 traveling obliquely upward from the daylighting device 2 is slightly reduced, but the light is scattered by the light diffusing member 20, so that the intensity distribution is made uniform, and the ceiling and wall surface of the room 101 are made more uniform. Illuminated. Thus, the daylighting apparatus 2 of the present embodiment can suppress glare by including the light diffusing member 20, and can reduce the glare of the room 101 at a lower cost than the conventional technique that mechanically adjusts the degree of opening and closing of the blinds. Comfort can be improved.

In addition, the light diffusing member 20 of the daylighting device 2 of the present embodiment includes a lenticular lens structure 27 configured by a plurality of convex lenses 27a extending in the vertical direction. The lens surface 27b of the convex lens 27a has a curvature in a horizontal plane and does not have a curvature in the vertical direction. The convex lens 27a has a high light scattering property in the horizontal direction and does not have a light scattering property in the vertical direction. Therefore, the light L2 incident on the first base material 21 from the daylighting unit 11 is greatly scattered in the horizontal direction when emitted from the convex lens 27a, and is not scattered in the vertical direction. The light L2 is emitted from the daylighting apparatus 2 while substantially maintaining the angular distribution when emitted from the daylighting unit 11. For this reason, according to the lighting device 2 of the present embodiment, glare can be suppressed without changing the irradiation performance in the depth direction of the room.
Further, according to the daylighting device 2 of the present embodiment, the light L2 incident on the daylighting area SA is scattered in the horizontal direction by the light diffusing member 20, so that the irradiation performance changes due to, for example, azimuth fluctuation due to the diurnal motion of the sun Can be relaxed.

[Modification 1 of the second embodiment]
Next, a daylighting apparatus 2A according to Modification 1 of the second embodiment will be described with reference to FIG.
The basic structure of the daylighting device 2A of the first modification is substantially the same as that of the second embodiment described above, but the configurations of the daylighting area and the light diffusion area are different. In addition, about the component of the same aspect as the above-mentioned 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As illustrated in FIG. 16, the lighting device 2 </ b> A according to the first modification includes a plurality of lighting areas SA <b> 1, SA <b> 2, SA <b> 3, and SA <b> 4 on the first surface (corresponding to the first surface 21 a in FIG. 12) of the first base material 21. In addition, a light transmission area TA1 is provided around and between each of the daylighting areas SA1 to SA4. Further, four light diffusion regions KA1, KA2, KA3, and KA4 are provided on the second surface (corresponding to the second surface 21b in FIG. 12) of the first base material 21. When viewed from the normal direction of the first base material 21, the four daylighting areas SA1 to SA4 and the four light diffusion areas KA1, KA2, KA3, and KA4 overlap each other.
The daylighting device 2A of the first modification has the daylighting areas SA1 to SA4 divided into four parts, and the background luminance is ensured by sufficiently securing the area of the light transmission area TA1 surrounding the daylighting areas SA1 to SA4. As a result, the influence of the light transmission region TA1 can be increased. Thereby, the lighting device 2A can increase the influence of the background luminance and effectively suppress glare in the lighting areas SA1 to SA4.

[Modification 2 of the second embodiment]
Next, a daylighting device 2B according to Modification 2 of the second embodiment will be described with reference to FIG.
The basic structure of the daylighting device 2B of the modification 2 is substantially the same as that of the second embodiment described above, but the configurations of the daylighting area and the light diffusion area are different. In addition, about the component of the same aspect as the above-mentioned 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 17, the daylighting device 2 </ b> B of Modification 2 is provided with one daylighting area SA <b> 5 in the center of the first surface of the first base material 21 (corresponding to the first surface 21 a in FIG. 12). . Further, the first surface 21a of the first base member 21 is provided with a light transmission area TA2 arranged so as to surround the daylighting area SA5 and a cross-shaped light transmission area TA3 in the center of the daylighting area SA5. ing. The light transmission area TA2 is provided so as to divide the daylighting area SA5 into four sections having the same shape. In addition, the second surface of the first base material 21 (corresponding to the second surface 21b in FIG. 12) overlaps each of the four sections of the daylighting area SA5 when viewed from the normal direction of the first base material 21. Four light diffusion regions KA1, KA2, KA3, and KA4 are provided.
According to the daylighting device 2B of the second modification, the same effects as those of the first modification can be achieved. That is, by sufficiently securing the areas of the light transmissive areas TA2 and TA3 with respect to the daylighting area SA5, the influence of the light transmissive areas TA2 and TA3 as background luminance can be enhanced. As a result, the daylighting apparatus 2B can increase the influence of the background luminance and effectively suppress glare in the daylighting area SA5.

[Modification 3 of the second embodiment]
Next, a daylighting apparatus 2C according to Modification 3 of the second embodiment described above will be described with reference to FIGS. 18, 19A, and 19B.
The basic structure of the daylighting apparatus 2C of the third modification is substantially the same as that of the second embodiment described above, but the configuration of the range occupied by the light diffusion region is different. In addition, about the component of the same aspect as the above-mentioned 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 18 is a diagram illustrating an overall configuration of a daylighting device 2C according to Modification 3. FIG. 19A is a cross-sectional view of the daylighting device 2C attached to the window glass 100 taken along the vertical direction, and FIG. 19B is a partially enlarged view of FIG. 19A.

  As shown in FIGS. 18, 19A, and 19B, the daylighting device 2C of Modification 3 includes a daylighting area SA in the center of the first surface 21a of the first base member 21, and transmits light around the daylighting area SA. An area TA is provided. The second surface 21b of the first base material 21 is provided with a light diffusion region KA5 over the entire surface. That is, the light diffusion region KA5 is provided in a region overlapping the daylighting region SA and the light transmission region TA when viewed from the normal direction of the first base material 21.

Next, based on FIG. 19B, a path of light incident on the daylighting area SA and the light transmission area TA of the daylighting apparatus 2C will be described.
In FIG. 19B, the light that directly reaches from the sun enters the window glass 100 to which the daylighting device 2C is attached from an obliquely upper side on the outdoor 102 side. Of the sunlight, light that passes through the window glass 100 and is incident on the light transmission area TA is light L1, and light that is incident on the lighting area SA is light L2.

The light L2 is incident on the daylighting portion 11 provided on the first surface 21a of the first base material 21 from an obliquely upward direction, refracted, and emitted obliquely upward. Further, the light L <b> 2 enters the light diffusion region KA <b> 5 provided on the second surface 21 b of the first base material 21 and is diffused in the horizontal direction by the light diffusion member 20.
Further, part of the light incident on the daylighting unit 11 is emitted obliquely downward of the room 101 as light L2a. The light L2a is diffused in the horizontal direction in the light diffusion region KA5. The light L <b> 2 a may be dazzling (glare) that is uncomfortable for a person in the room 101.

  On the other hand, in the light transmission area TA, the light L1 is incident on the daylighting unit 11 obliquely from above and is emitted obliquely downward in the room 101. Further, the light L <b> 2 enters the light diffusion region KA <b> 5 provided on the second surface 21 b of the first base material 21 and is diffused in the horizontal direction by the light diffusion member 20. The light L1 is emitted from a region surrounding a region where the light L2a that may become glare is generated. Therefore, the brightness of the light L1 has an effect of suppressing glare as background luminance.

According to the daylighting device 2C of Modification 3, the same effects as those of the second embodiment can be obtained.
In addition, the daylighting device 2C is provided with the light diffusion area KA5 not only in the daylighting area SA but also in the area overlapping the light transmission area TA, and diffuses the light L1 transmitted through the light transmission area TA. As a result, the boundary between the light incident on the daylighting area SA and the light incident on the light transmission area TA can be obscured, and the daylighting area SA can be made inconspicuous from the observer in the room 101.

[Modification 4 and Modification 5 of Second Embodiment]
Next, a daylighting apparatus 2D according to Modification 4 and a daylighting apparatus 2E according to Modification 5 of the second embodiment will be described.
FIG. 20 is a diagram illustrating an overall configuration of a daylighting device 2D according to a fourth modification. As illustrated in FIG. 20, the daylighting device 2 </ b> D according to the fourth modification is an example in which the daylighting areas SA <b> 1 to SA <b> 4 divided into four are employed instead of the daylighting area SA of the daylighting apparatus 3 </ b> C according to the third modification. A light transmission area TA1 is provided around and between each of the daylighting areas SA1 to SA4.
FIG. 21 is a diagram illustrating an overall configuration of a daylighting apparatus 2E according to Modification 5. As shown in FIG. 21, in the daylighting device 2E of the modification 5, instead of the daylighting area SA of the daylighting apparatus 3C of the modification 3, a cross-shaped light transmission area TA3 is provided in the center, and the surrounding area is the light transmission area TA2. This is an example in which a daylighting area SA5 surrounded by is adopted.
According to the daylighting apparatuses 2D and 2E, the same effects as those of the third modification can be obtained. In addition, the daylighting apparatuses 2D and 2E can sufficiently secure the area of the light transmission area TA1 or the light transmission areas TA2 and TA3 with respect to the daylighting areas SA1 to SA4 or the daylighting area SA5, and can increase the influence of the background luminance.

[Modifications 6 to 9 of the second embodiment]
The daylighting device may have various structures other than those described above. Other structures will be described below as modified examples 6 to 9. In addition, each structure in each modification demonstrated below, those combinations, etc. are examples, and addition of a structure, omission, substitution, and other changes are possible.

  FIG. 22 is a cross-sectional view of a daylighting apparatus 2F according to Modification 6. The daylighting device 2F includes a third base material 23 in addition to the first base material 21 and the second base material 22, and the other basic structure is the daylighting device 2C of Modification 3 (see FIGS. 18, 19A and 19A). This is the same as FIG. 19B). The third base material 23 is located between the window glass 100 and the first base material 21. One surface 23 a of the third base material 23 may be in contact with the inner surface 100 a of the window glass 100 or may be separated.

According to the daylighting device 2F of the modification 6, by providing the third base material 23, the space in which the daylighting unit 11 is provided can be easily sealed. Thereby, even if it is a case where the lighting part 11 gas-emits, it can suppress that gas leaks into the room | chamber interior 101. FIG. Moreover, it can suppress that dust adheres to the lighting part 11 by sealing the space in which the lighting part 11 was provided by the 3rd base material 23. FIG. In addition, when the daylighting unit 11 is sealed, the contact between the daylighting unit 11 and the air is cut off by, for example, filling the sealed space with an inert gas or by reducing the pressure, thereby suppressing deterioration of the daylighting unit 11. May be.
In addition, the third base material 23 may employ, for example, a light-transmitting base material having an effect of suppressing ultraviolet rays, or may be a colored layer in consideration of design properties and the like.

FIG. 23 is a cross-sectional view of a daylighting apparatus 2G according to Modification 7. In the daylighting device 2G, the light diffusing member 20 is provided not on the first base material 21 but on the first surface 22a of the second base material 22, and the other basic structure is the daylighting device 2F of Modification 6 (see FIG. 22).
Like the daylighting device 2G of the modified example 7, the light diffusing member 20 and the daylighting unit 11 are not necessarily provided on the same base material, and can be appropriately selected according to the purpose.

FIG. 24 is a cross-sectional view of a daylighting apparatus 2H according to Modification 8. The daylighting device 2H does not have the second base material 22, and the other basic structure is the same as the daylighting device 2F of the modification 6 (FIG. 22).
FIG. 25 is a cross-sectional view of the daylighting apparatus 2I according to Modification 9. The daylighting device 2I does not have the second base material 22 and the third base material 23, and the other basic structure is the same as the daylighting device 2F (FIG. 22) of the modified example 6.
As in the daylighting device 2H of the modification 8 and the daylighting device 2I of the modification 9, the base material can be omitted as appropriate. Further, the light diffusing member 20 may be exposed to the room 101 side.

[Third Embodiment]
Next, the daylighting apparatus 3 according to the third embodiment will be described with reference to FIGS. 26, 27A, and 27B. As in the first and second embodiments, the daylighting device 3 of the third embodiment is a daylighting device that takes sunlight (external light) into the room 101 while being attached to the surface 100a of the window glass 100 on the room 101 side. This is an example.
The daylighting device 3 of the third embodiment has the same basic structure as that of the second embodiment described above, but differs in the configuration of the ranges of the daylighting area SA6 and the light diffusion area KA that overlap each other. In addition, about the component of the same aspect as 1st, 2nd embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 26 is a diagram illustrating an overall configuration of the daylighting device 3 according to the third embodiment. 27A is a cross-sectional view of the daylighting device 3 attached to the window glass 100 taken along the vertical direction, and FIG. 27B is a partially enlarged view of FIG. 27A.

  The daylighting device 3 includes a first base material 31 and a second base material 32 having light permeability, and an outer frame frame 35 provided on the periphery of the first base material 31 and the second base material 32. Yes.

  As shown in FIG. 26, the outer frame frame 35 is a frame having a rectangular shape. As shown in FIG. 27A, the outer frame frame 35 is held in a state in which the first base material 31 and the second base material 32 are spaced from each other in order from the window glass 100 side. The first base material 31 has a first surface 31a on the window glass 100 side and a second surface 31b on the opposite side. The second base material 32 has a first surface 32a on the first base material 31 side and a second surface 32b on the opposite side.

  On the first surface 31 a of the first base material 31, the daylighting unit 11 is provided over the entire surface to form a daylighting region SA6. A light diffusion member 20 is provided in the center of the first surface 32a of the second base material 32 to form a light diffusion region KA. A region where the light diffusion member 20 is not provided is formed around the light diffusion region KA.

Based on FIG. 27B, the path of light incident on the daylighting area SA6 of the daylighting apparatus 3 will be described.
As shown in FIG. 27B, the light that directly reaches from the sun enters the window glass 100 to which the daylighting device 3 is attached from the oblique upper side on the outdoor 102 side, passes through the window glass 100, and is refracted by the daylighting unit 11. Of the light refracted by the daylighting unit 11, the light incident on the light diffusion region KA in which the light diffusion member 20 is provided on the first surface 32 a of the second base material 32 is the light L <b> 1, and the light diffusion member 20 is provided. The light that passes through the unoccupied region is designated as light L2.

As shown in FIG. 27B, the light L2 enters the light diffusion region KA, is diffused in the horizontal direction by the light diffusion member 20, and is emitted obliquely above the room 101. On the other hand, the light L1 that does not pass through the light diffusion member 20 is emitted into the room 101 without being diffused.
Further, part of the light L1 and the light L2 incident on the daylighting unit 11 is emitted toward the obliquely lower side of the room 101 as the light L1a and the light L2a, respectively. The light L1a is emitted into the room 101 without being diffused, and the light L2a is diffused in the horizontal direction by the light diffusion member 20 and emitted into the room 101.

  The light L1a and the light L2a are light toward the observer in the room 101. The light L2a for the observer is light emitted from the central portion of the daylighting device 3, and tends to be unpleasant glare for the observer. A region where the light diffusion member 20 is not provided is positioned around the light diffusion region KA that irradiates the light L2a, and the light L1a is irradiated to the observer from this region. The light L2a is transmitted through the light diffusing member 20, the luminance is made uniform, and the luminance of the light toward the viewer is weakened. On the other hand, since the light L1a does not pass through the light diffusing member 20, the luminance of the light toward the observer is not weakened. Therefore, this region serves as a background to suppress glare in the light diffusion region KA.

[Modification 1 of the third embodiment]
Next, a daylighting apparatus 3A according to Modification 1 of the third embodiment will be described.
FIG. 28 is a diagram illustrating an overall configuration of a daylighting device 3A according to the first modification. FIG. 29 is a cross-sectional view of the lighting device 3A attached to the window glass 100 taken along the vertical direction.
The basic structure of the daylighting device 3A of the first modification is substantially the same as that of the third embodiment described above, but the configuration of the light diffusion region is different. In addition, about the component of the same aspect as the above-mentioned 3rd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 28 and 29, the first surface 31a of the first base material 31 of the daylighting apparatus 3A is provided with the daylighting unit 11 to form the daylighting area SA6. In addition, on the first surface 32a of the second base material 32, four light diffusion regions KA1 to KA4 in which a plurality of light diffusion members 20 are arranged in two rows in the horizontal direction and two columns in the vertical direction are formed. .

  The lighting device 3A according to the first modification has light diffusion regions KA1 to KA4 divided into four. Moreover, the area | region in which the light-diffusion member 20 is not provided is located around and between the light-diffusion areas KA1-KA4. Thereby, the area of the area | region which does not permeate | transmit the light-diffusion member 20 with respect to light-diffusion area KA1-KA4 is fully ensured, the influence of background brightness | luminance is enlarged, and a glare can be suppressed effectively.

[Modification 2 of the third embodiment]
Next, a daylighting device 3B according to Modification 2 of the third embodiment will be described.
FIG. 30 is a diagram illustrating an overall configuration of a daylighting device 3B according to the second modification. FIG. 31 is a cross-sectional view of the daylighting device 3B attached to the window glass 100 taken along the vertical direction.
The daylighting device 3B of Modification 2 has a structure in which a second light diffusion member (light diffusion layer) 30 is further provided in the basic structure of the daylighting device 3A of Modification 1 described above. In the following description, for the purpose of distinguishing from the second light diffusing member 30, the light diffusing member 20 is referred to as the first light diffusing member 20, and the light diffusing region KA1 formed by the first light diffusing member 20 is used. ˜KA4 are referred to as first light diffusion regions KA1 to KA4.

  As shown in FIGS. 30 and 31, the first surface 31a of the first base material 31 of the daylighting device 3B is provided with the daylighting portion 11 to form the daylighting area SA6. A plurality of light diffusing members 20 are arranged in two rows in the horizontal direction and two columns in the vertical direction on the first surface 32a of the second base material 32 to form first light diffusion regions KA1 to KA4, respectively. ing. In addition, the second light diffusing member 30 is provided on the second surface 32b of the second base material 32 to form a second light diffusing area JA. The second light diffusion region JA is located in a region other than the first light diffusion regions KA1 to KA4 when the second base material 32 is viewed from the normal direction. The light diffusion member 30 has a layer shape and functions as a light diffusion layer.

As the second light diffusing member 30, for example, the second light diffusing member 30 is provided with an isotropic scattering structure, and light in which particles having an aspect ratio of about 5 to 500 are dispersed in a continuous layer. It is preferable to use a scattering layer.
Further, as the second light diffusing member 30, a concave / convex structure of a μm level is formed by a surface / relief / hologram pattern, such as a light diffusion control film (trade name: LSD) manufactured by Minute Corp. having an anisotropic scattering structure. You may use what was formed.
The second light diffusing member 30 may employ a lenticular lens structure 27 constituted by a plurality of convex lenses 27 a as shown in FIG. 13, similarly to the first light diffusing member 20. In this case, the second light diffusing member 30 is preferably different from the first light diffusing member 20, for example, by making the width of the convex lens 27 a wider than that of the first light diffusing member 20. .
Further, instead of the second light diffusing member 30, a light diffusing layer may be formed by roughening part of the surface properties of the second surface 32b of the second base material 32. The light diffusion layer has an anisotropic diffusion structure when the surface is roughened or irregular streaks are formed, and diffuses light in various directions in the indoor space. On the other hand, when a regular striped unevenness (for example, a lenticular lens structure) is adopted as the light diffusion layer, the light diffusion layer has an isotropic diffusion structure.

  According to the daylighting device 3B of the second modification, among the light incident on the daylighting unit 11, the light incident on the first light diffusion regions KA1 to KA4 is scattered in the horizontal direction by the first light diffusion member 20. . Of the light incident on the daylighting unit 11, the light incident on the second light diffusion region JA is scattered in various directions by the second light diffusion member 30. Of the light irradiated to the indoor 101 side, the light transmitted through the first light diffusion regions KA1 to KA4 is light irradiated from the central portion of the daylighting device 3B and tends to be unpleasant glare for the observer. On the other hand, the light transmitted through the second light diffusion area JA gives the glare suppression effect as the background luminance. Further, when a light scattering layer having an isotropic scattering structure or the like is employed as the second light diffusion member 30, the light is scattered in various directions when passing through the second light diffusion region JA. Therefore, glare can be suppressed by increasing the background luminance without depending on the position of the observer. In addition, the light is moderated by transmitting through the second light diffusion area JA, and the brightness of the light emitted from the second light diffusion area JA as a background can be prevented from giving stress to the observer.

[Modification 3 and Modification 4 of the third embodiment]
Next, the daylighting device 3C of the third modification of the third embodiment and the daylighting device 3D of the fourth modification will be described. FIG. 32 is a cross-sectional view of the daylighting device 3C of the third modification. FIG. 33 is a cross-sectional view of the daylighting device 3D of the fourth modification.
The daylighting device 3C of the third modification and the daylighting device 3D of the fourth modification are substantially the same as the basic structure of the second modification described above, but the surface on which the second light diffusion member 30 is provided is different.

  As shown in FIG. 32, in the daylighting device 3 </ b> C of the third modification, the second light diffusing member 30 is provided on the second surface 31 b of the first base material 31. The second light diffusion member 30 forms a second light diffusion region JA. The second light diffusion region JA is located in a region other than the first light diffusion regions KA1 to KA4 when the second base material 32 is viewed from the normal direction.

  As shown in FIG. 33, in the daylighting device 3 </ b> D of Modification Example 4, the second light diffusing member 30 is provided on the first surface 31 a of the second base material 32. The first light diffusion member 20 and the second light diffusion member 30 are provided on the first surface 31a of the second base material 32, and the first light diffusion regions KA1 to KA4 and the second light are respectively provided. A diffusion region JA is formed. The second light diffusion region JA is located in a region other than the first light diffusion regions KA1 to KA4 when the second base material 32 is viewed from the normal direction.

  As shown in the daylighting device 3C of the third modification and the daylighting device 3D of the fourth modification, the surface on which the second light diffusion member 30 is provided can be set as appropriate. Similarly, the surface provided by the first light diffusing member 20 can be set as appropriate.

[Fourth Embodiment]
Next, the lighting device 4 of the fourth embodiment will be described with reference to FIGS. 34, 35A, and 35B. Similarly to the first to third embodiments, the daylighting device 4 of the fourth embodiment is a daylighting device that takes sunlight (external light) into the room 101 while being attached to the surface 100a of the window glass 100 on the room 101 side. This is an example.
The daylighting device 4 of the fourth embodiment has the same basic structure as each of the embodiments described above, but the configuration of the outer frame 45 and the range of the daylighting area SA6 and the first light diffusion area KA5 overlapping each other. Different. In addition, about the component of the same aspect as each above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 34 is a diagram illustrating an overall configuration of the daylighting device 4 according to the fourth embodiment. FIG. 35A is a cross-sectional view of the daylighting device 4 attached to the window glass 100 taken along the vertical direction, and FIG. 35B is a partially enlarged view of FIG. 35A.

  The daylighting device 4 includes a first base material 41, a second base material 42, and a third base material 43 having optical transparency, and an outer frame frame (second light) provided on the periphery of the base material and having optical transparency. Diffusion member) 45.

As shown in FIG. 34, the outer frame frame 45 is a frame having a rectangular shape, and the third base material 43, the first base material 41, and the second base material 42 are spaced from each other in order from the window glass 100 side. Hold in state.
The outer frame 45 has light diffusibility, functions as a second light diffusion member, and forms a second light diffusion region JA. The outer frame 45 has an isotropic scattering structure and scatters incident light in various directions.

  As shown in FIG. 35B, the outer frame 45 is composed of a base resin 46 having light permeability and having a light scatterer 47 dispersed therein. As the base resin 46, for example, a transparent resin mixture in which a polymerization initiator, a coupling agent, a monomer, an organic solvent, and the like are mixed with a resin such as an acrylic resin, an epoxy resin, or a silicone resin can be used. The polymerization initiator may contain various additional components such as stabilizers, inhibitors, plasticizers, optical brighteners, mold release agents, chain transfer agents, other photopolymerizable monomers, and the like.

  The light scatterer 47 has a function of scattering light incident on the outer frame 45. The light scatterer 47 is a particle (small piece) having a refractive index different from that of the resin 10. It is desirable that the light scatterers 47 are mixed inside the base resin 46 and dispersed without agglomeration. The light scatterer 47 is made of, for example, glass, acrylic polymer, olefin polymer, vinyl polymer, cellulose polymer, amide polymer, fluorine polymer, urethane polymer, silicone polymer, imide polymer resin, or the like. A light transmissive material is used. Alternatively, the light scatterer 47 may be bubbles dispersed in the resin 10. The shape of the light scatterer 47 may be, for example, a sphere, an ellipsoid, a flat plate, or a polyhedron. The size of the light scatterer 47 should just be about 0.5-20 micrometers, for example, may be uniform and may differ.

  The outer frame (second light diffusing member) 45 is not limited to the configuration in which the light scatterers 47 are dispersed in the base resin 46. For example, an unevenness may be formed on the surface 45a on the indoor 101 side of the outer frame 45, and light may be diffused by the unevenness. Alternatively, a layer having a light diffusion function may be separately provided on the surface 45 a of the outer frame 45.

  The third substrate 43 has a first surface 43a on the side of the window glass 100 and a second surface 43b on the opposite side. The first surface 43a of the third base material 43 may be in contact with or separated from the inner surface 100a of the window glass 100. The first base material 41 has a first surface 41a on the third base material 43 side and a second surface 41b on the opposite side. The second substrate 42 has a first surface 42a on the first substrate 41 side and a second surface 42b on the opposite side.

  As shown in FIG. 34, FIG. 35A, and FIG. 35B, the first surface 41a of the first base material 41 is provided with the daylighting unit 11 over the entire surface to form a daylighting region SA6. Further, the first light diffusion member 20 is provided over the entire first surface 42a of the second base material 42 to form a first light diffusion region KA5.

  The first base material 41 provided with the lighting area SA6 over the entire surface and the second base material 42 provided with the first light diffusion area KA5 over the entire surface are surrounded by the outer frame 45 serving as the second light diffusion member. ing. Therefore, when viewed from the normal direction of the first base material 41 (or the second base material 42), the daylighting area SA6 and the first light diffusion area KA5 are surrounded by the second light diffusion area JA. .

Based on FIG. 35B, the path of light incident on the daylighting device 4 will be described.
As shown in FIG. 35B, the light that directly reaches from the sun enters the window glass 100 to which the daylighting device 4 is attached from an obliquely upper side on the outdoor 102 side. Of the external light, light incident on the outer frame 45 is referred to as light L1, and light incident on the daylighting area SA6 is referred to as light L2.

The light L2 enters the daylighting area SA6, is refracted obliquely upward by the daylighting unit 11, and is further diffused in the horizontal direction by the first light diffusion member 20. In addition, the light L2a that is a part of the light incident on the daylighting area SA6 is not sufficiently refracted and proceeds obliquely downward, and is emitted obliquely downward in the room 101 after being diffused by the first light diffusion member 20. .
On the other hand, the light L1 incident on the outer frame 45 as the second light diffusion member is emitted obliquely downward of the room 101 while being scattered in various directions.

  Of the light irradiated to the indoor 101 side, the light L2a emitted obliquely downward from the second base material 42 on which the first light diffusion region KA5 is disposed over the entire surface tends to be unpleasant glare for the observer. On the other hand, the light L1 transmitted through the outer frame 45 gives an effect of suppressing glare as background luminance. Since the light L1 is scattered in various directions when passing through the outer frame 45, the background luminance can be increased and glare can be suppressed without depending on the position of the observer. In addition, the light is moderated by transmitting through the second light diffusion area JA, and it is possible to suppress the brightness of the background from giving stress to the observer.

Since the light emitted from the outdoor 102 to the indoor 101 is sunlight, the incident angle changes with time. Since the daylighting device 4 refracts light in the daylighting area SA6, the intensity of light reaching the room 101 varies depending on the incident angle. Particularly in the evening, when the incident angle from the sun becomes shallow, the light reaching the observer in the room 101 from the daylighting area SA6 becomes weak. On the other hand, the light passing through the outer frame 45 is more intense than the light passing through the daylighting area SA6 because sunlight with a small incident angle reaches the observer directly. Therefore, the light passing through the outer frame 45 can be glare that makes the viewer feel uncomfortable. In this case, the light transmitted through the daylighting area SA6 contributes as background luminance, and glare transmitted through the outer frame 45 is suppressed.
That is, the glare can be suppressed by reversing the light source that generates glare and the background luminance that suppresses glare.

  In the present embodiment, the daylighting area SA6 is provided on the entire surface of the first base material 41, and the first light diffusion area KA5 is provided on the entire surface of the second base material 42. Further, when viewed from the normal direction of the first base material 41 (or the second base material 42), the daylighting area SA6 and the first light diffusion area KA5 completely overlap. However, for example, areas in which the daylighting area SA and the light diffusion area KA are not formed may be provided on the periphery of the first base material 41 and the second base material 42, respectively (see, for example, FIG. 12). Further, the light diffusion region KA5 may be provided in a wide area with respect to the daylighting region SA (see, for example, FIGS. 19A and 19B). Further, the daylighting area SA6 may be provided in a wider area than the first light diffusion area KA (see, for example, FIGS. 27A and 27B).

[Modification 1 of Fourth Embodiment]
Next, a daylighting apparatus 4A according to Modification 1 of the fourth embodiment will be described. FIG. 36 is a diagram illustrating an overall configuration of a daylighting device 4A of the first modification.
The basic structure of the daylighting device 4A of Modification 1 is substantially the same as that of the fourth embodiment described above, except that the outer frame (second light diffusing member) 45A includes a plurality of windows 48. In addition, about the component of the same aspect as the above-mentioned 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 36 and 37, the daylighting device 4A includes an outer frame 45A having a light transmission property and a light diffusion property and provided with a plurality of window portions 48, and a window portion 48 of the outer frame frame 45A. The first base 41, the second base 42, and the third base 43 are held.

The outer frame 45A is made of the same material as that of the fourth embodiment, and functions as a second light diffusion member to form the second light diffusion region JA. The outer frame has four windows 48 arranged in two rows in the horizontal direction and two columns in the vertical direction. The window portion 48 holds the first base material 41, the second base material 42, and the third base material 43 with the same configuration as in the fourth embodiment. Further, the first surface 41a of the first base material 41 is provided with the daylighting unit 11 over the entire surface to form a daylighting region SA6. Further, the first light diffusion member 20 is provided over the entire first surface 42a of the second base material 42 to form a light diffusion region KA5.
It can be said that the daylighting device 4A of Modification 1 has a configuration in which the daylighting devices 4 of the fourth embodiment are arranged in two rows and two columns.

  According to the lighting device 4A of the first modification, the outer frame 45A as the second light diffusing member is also interposed between the windows 48, so that the light transmitted through the outer frame 45A contributes to the background luminance. The effect of suppressing glare can be enhanced.

[Modification 2 of the fourth embodiment]
Next, a daylighting device 4B according to Modification 2 of the fourth embodiment will be described. FIG. 38 is a diagram illustrating an overall configuration of a daylighting device 4B according to a second modification.
The basic structure of the daylighting device 4B of Modification 1 is substantially the same as that of the above-described fourth embodiment, except that the second base material 42 including the first light diffusion member 20 is not provided.

As shown in FIG. 38, the daylighting device 4B includes an outer frame 45B and a first base material 41 and a third base material 43 that are respectively held by the outer frame frame 45B. On the first surface 41a of the first base material 41, the daylighting unit 11 is provided over the entire surface to form the daylighting area SA6.
The outer frame 45B is made of the same material as that of the fourth embodiment, and functions as a second light diffusion member to form the second light diffusion region JA.

  According to the daylighting device 4B of the second modification, the outer frame 45B as the second light diffusion member is interposed, so that the light transmitted through the outer frame 45B can enhance the effect of suppressing glare that contributes to the background luminance. it can.

[Fifth Embodiment]
Next, the daylighting apparatus 5 according to the fifth embodiment will be described with reference to FIGS. 39, 40A, and 40B. As in the first to fourth embodiments, the daylighting device 5 of the fifth embodiment is a daylighting device that takes sunlight (external light) into the room 101 while being attached to the surface 100a of the window glass 100 on the room 101 side. This is an example.
The daylighting device 5 of the fifth embodiment has the same basic structure as each of the embodiments described above, but mainly differs in the configuration of the outer frame frame 55. In addition, about the component of the same aspect as each above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 39 is a diagram illustrating an overall configuration of the daylighting device 5 according to the fifth embodiment. 40A is a cross-sectional view of the daylighting device 5 attached to the window glass 100 taken along the vertical direction, and FIG. 40B is a partially enlarged view of FIG. 40A.

  The daylighting device 5 includes a first base member 51 having light transmittance, and an outer frame (light emitting member) 55 that is provided on the periphery of the first base member 51 and emits light by itself.

  As shown in FIG. 39, the outer frame frame 55 is a frame body having a rectangular shape, and holds the first base material 51 through the window glass 100 and a predetermined gap. Further, the outer frame frame 55 functions as a light emitting member and forms a light emitting area HA.

As shown in FIGS. 40A and 40B, the outer frame frame 55 includes a light emission source 56, a case (light diffusing member) 57 that covers the light emission source 56 and constitutes a frame to hold the first base material 51. Have
As the light emission source 56, for example, a cold cathode fluorescent tube (CCFL), a light emitting diode (LED), an organic electroluminescence (organic EL), or the like can be used.
It is preferable that the light emission source 56 of the outer frame 55 has a light control function that measures the brightness of light emitted from the outdoor 102 and adjusts the light emission luminance in accordance with the intensity of the light.

  The case 57 has light transmittance and functions as a light diffusing member that transmits and diffuses the light emitted from the light emitting source 56 toward the indoor 101 side. As shown in FIG. 40B, the case 57 is composed of a base resin 58 in which a light scatterer 59 is dispersed. The case 57 having the same configuration as that of the outer frame 55 described in the fourth embodiment can be used. The case 57 is not limited to a configuration in which the light scatterers 59 are dispersed in the base resin 58. For example, an unevenness may be formed on the surface 57a of the case 57 on the indoor 101 side, and light may be diffused by the unevenness. In addition, a layer having a light diffusion function may be separately provided on the surface 57 a of the case 57.

The outer frame 55 scatters the light emitted from the light source 56 by the case 57. For this reason, the outer frame 55 is not only the light emitting area HA but also the light diffusion area JA.
Note that the case 57 of the outer frame 55 does not necessarily have a light diffusing function. In this case, the outer frame 55 functions only as the light emitting area HA.

  As shown in FIGS. 39, 40A, and 40B, the first base material 51 has a first surface 51a on the side of the window glass 100 and a second surface 51b on the opposite side. On the first surface 51a of the first substrate 51, the daylighting unit 11 is provided over the entire surface to form the daylighting area SA6.

  The first base 51 having the daylighting area SA6 provided on the entire surface is surrounded by the outer frame 55. Therefore, as viewed from the normal direction of the first base material 51, the daylighting area SA6 is surrounded by the light emitting area HA and the light diffusion area JA.

Based on FIG. 40B, the path of light incident on the daylighting apparatus 5 will be described.
As shown in FIG. 40B, the light L2 that reaches directly from the sun enters the daylighting area SA6 obliquely from above through the window glass 100 to which the daylighting device 5 is attached. The light L2 enters the daylighting area SA6, is refracted obliquely upward by the daylighting unit 11, and is emitted into the room 101. In addition, the light L2a that is a part of the light incident on the daylighting area SA6 is not sufficiently refracted and proceeds obliquely downward and is emitted into the room 101.
On the other hand, since the outer frame 55 has the light emission source 56, it irradiates the light L <b> 3 toward the room 101.

Of the light irradiated to the room 101 side, the light L2a that has passed through the first base member 51 is light irradiated from the center of the daylighting device 5, and thus tends to be unpleasant glare for the observer. On the other hand, the light L3 emitted from the outer frame 55 gives a glare suppression effect as background luminance. The light L3 is scattered in various directions by passing through the outer frame 55, and the brightness is reduced. Thereby, it can suppress that the brightness of a background gives a stress to an observer.
In addition, when the outer frame 55 as a light emitting member has a dimming function, the brightness of light emitted from the light emitting area HA is adjusted according to the brightness of the external light, and the glare is efficiently and efficiently saved. Can be suppressed. It can also function as lighting to illuminate the room at night when outside light is weak.

[Modification 1 of Fifth Embodiment]
Next, a daylighting apparatus 5A according to Modification 1 of the fifth embodiment will be described. FIG. 41 is a cross-sectional view of the daylighting device 5A of the first modification.
The basic structure of the daylighting device 5A of Modification 1 is substantially the same as that of the fifth embodiment described above, but the second base material in which the first light diffusion member 20 is provided closer to the room 101 than the first base material 51. 52 is different.

As shown in FIG. 41, the daylighting device 5A includes an outer frame frame 55, a first base material 51, a second base material 52, and a third base material 53 that are held by the outer frame frame 55 and have light transmission properties. have.
The outer frame frame 55 is a frame body having a rectangular shape, and holds the third base material 53, the first base material 51, and the second base material 52 in order from the window glass 100 side with a gap therebetween.
The outer frame frame 55 functions as a light emitting member and forms a light emitting area HA. The outer frame 55 also functions as the second light diffusion area JA by scattering the light emitted from the light source 56 by the case 57.

  The third base material 53 has a first surface 53a on the window glass 100 side and a second surface 53b on the opposite side. The first surface 53 a of the third base material 53 may be in contact with or separated from the inner surface 100 a of the window glass 100. The first base material 51 has a first surface 51a on the third base material 53 side and a second surface 51b on the opposite side. The second substrate 52 has a first surface 52a on the first substrate 51 side and a second surface 52b on the opposite side.

  On the first surface 51a of the first substrate 51, the daylighting unit 11 is provided over the entire surface to form the daylighting area SA6. Further, the first light diffusion member 20 is provided over the entire first surface 52a of the second base material 52 to form a first light diffusion region KA5.

According to the daylighting device 5A of the first modification, the same effect as that of the fifth embodiment can be obtained.
In addition, according to the daylighting device 5A of the first modification, light that easily passes through the daylighting area SA6 and tends to become glare traveling obliquely downward passes through the first light diffusion area KA5. Therefore, it is lower than the case where there is no first light diffusion area KA5, and it becomes difficult for a person in the room 101 to feel glare and to suppress glare.

  In this modification, the daylighting area SA6 is provided on the entire surface of the first base material 51, and the light diffusion area KA5 is provided on the entire surface of the second base material 52. Further, when viewed from the normal direction of the first base material 51 (or the second base material 52), the daylighting area SA6 and the light diffusion area KA5 completely overlap. However, for example, regions in which the daylighting region SA and the light diffusion region KA are not formed may be provided on the periphery of the first base member 51 and the second base member 52 (see, for example, FIG. 12). Further, the light diffusion region KA5 may be provided in a wide area with respect to the daylighting region SA (see, for example, FIGS. 19A and 19B). Further, the daylighting area SA6 may be provided in a wide area with respect to the light diffusion area KA (see, for example, FIGS. 27A and 27B).

[Modification 2 of Fifth Embodiment]
Next, a daylighting device 5B of Modification 2 of the fifth embodiment will be described. FIG. 42 is a diagram illustrating an overall configuration of a daylighting device 5B according to the second modification. FIG. 43 is a cross-sectional view in which the lighting device 5B attached to the window glass 100 is taken along the vertical direction.
The basic structure of the daylighting device 5B of Modification 2 is substantially the same as that of the fifth embodiment described above, except that the outer frame (light emitting member) 55B has a plurality of windows 54. In addition, about the component of the same aspect as the above-mentioned 5th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIGS. 42 and 43, the daylighting device 5B includes an outer frame frame 55B having a light transmitting property and a light diffusing property, and a first base material 51 that is respectively held by the window portion 54 of the outer frame frame 55B. have.
The outer frame 55B has a configuration similar to that of the fifth embodiment. The outer frame frame 55B functions as a light emitting member and forms a light emitting area HA. The outer frame 55B also functions as the second light diffusion area JA by scattering the light emitted from the light source 56 by the case 57.
The outer frame has four windows 54 arranged in two rows in the horizontal direction and two columns in the vertical direction. The first base material 51 is held in the window portion 54. Further, the first surface 51a of the first base material 51 is provided with the daylighting unit 11 over the entire surface to form the daylighting area SA6.
It can be said that the daylighting device 5B of the modification 2 has a configuration in which the daylighting devices 5 of the fifth embodiment are arranged in two rows and two columns.

  According to the daylighting device 5B of the second modification, since the outer frame frame 55B as a light emitting member is interposed between the window portions 54, the light emitted from the outer frame frame 55B suppresses the glare that contributes to the background luminance. Can enhance the effect.

[Modification 3 of Fifth Embodiment]
Next, a daylighting device 5C according to Modification 3 of the fifth embodiment will be described.
FIG. 44 is a cross-sectional view of the daylighting device 5C attached to the window glass 100 taken along the vertical direction.
The daylighting device 5C according to Modification 3 has a configuration in which the configuration of Modification 1 described above and the configuration of Modification 2 are combined. In addition, about the component of the same aspect as the above-mentioned 5th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 44, in the daylighting device 5C, the outer frame (light emitting member) 55B has a plurality of window portions 54, and in each window portion 54, the first base material 51, the second base material 52, and the third base material. The material 53 is held. Further, the first surface 51a of the first base material 51 is provided with the daylighting unit 11 over the entire surface to form the daylighting area SA6. Further, the first light diffusion member 20 is provided over the entire first surface 52a of the second base material 52 to form a light diffusion region KA5.
It can be said that the daylighting device 5C of the modification 3 has a configuration in which the daylighting devices 5A of the modification 1 are arranged in two rows and two columns.
According to the daylighting device 5C of Modification 3, the effects of Modification 1 and Modification 2 can be achieved simultaneously.

[Sixth Embodiment]
Next, the lighting device 6 of 6th Embodiment is demonstrated based on FIG. 45, FIG. Similarly to the first to fifth embodiments, the daylighting device 6 of the sixth embodiment is a daylighting device that takes sunlight (external light) into the room 101 while being attached to the surface 100a of the window glass 100 on the room 101 side. This is an example. The lighting device 6 of the sixth embodiment is different from the above-described embodiments in that the lighting device 60 is provided. In addition, about the component of the same aspect as each above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The daylighting device 6 includes a first base 61 having light permeability, an outer frame 65 provided on the periphery of the first base 61, and an illumination device 60.

  As shown in FIG. 45, the outer frame frame 65 is a frame body having a rectangular shape, and holds the first base 61 through the window glass 100 through a predetermined gap. The outer frame 65 has a function of reflecting the light emitted from the lighting device 60 toward the indoor 101 side. Accordingly, it is preferable that the surface 65a of the outer frame 65 has enhanced reflection characteristics. For example, the surface 65a of the outer frame 65 may be a mirror surface or may be painted white in order to improve reflection characteristics. In addition, the surface 65a of the outer frame 65 may be formed with a scattering layer on the surface or an irregular shape in order to improve the diffusibility of reflected light.

  As shown in FIG. 45, the first base member 61 has a first surface 61a on the window glass 100 side and a second surface 41b on the opposite side. On the first surface 61a of the first base member 61, the daylighting unit 11 is provided over the entire surface to form the daylighting region SA6.

As the illuminating device 60, conventionally known illumination can be appropriately employed. The illuminating device 60 is provided to irradiate a region located on the periphery of the first base material 61, that is, the outer frame frame 65 and the wall surface 103 a of the wall 103 located further outside the outer frame frame 65.
On the first surface 61a of the first base member 61, a lighting area SA6 is formed over the entire surface, and the lighting device 60 illuminates the surrounding area of the lighting area SA6.
The lighting device 60 preferably has a dimming function that measures the brightness of the room 101 and can adjust the light emission luminance in accordance with the intensity of light.

The path of light incident on the daylighting device 6 will be described with reference to FIG.
As shown in FIG. 46, the light L2 that reaches directly from the sun enters the daylighting area SA6 obliquely from above through the window glass 100 to which the daylighting device 6 is attached. The light L2 enters the daylighting area SA6, is refracted obliquely upward by the daylighting unit 11, and is emitted into the room 101. In addition, the light L2a that is a part of the light incident on the daylighting area SA6 is not sufficiently refracted and proceeds obliquely downward and is emitted into the room 101.
On the other hand, the lights L4 and L5 from the illumination device 60 are reflected on the surface 65a of the outer frame frame 65 or the wall surface 103a of the wall 103 located outside the outer frame frame 65 to irradiate the room 101.

Of the light irradiated to the room 101 side, the light L2a transmitted through the first base material 61 is light irradiated from the central portion of the daylighting device 6, and therefore tends to be unpleasant glare for the observer. On the other hand, the lights L4 and L5 irradiated from the illumination device 60 and reflected by the surface 65a or the wall surface 103a of the outer frame 65 give a glare suppression effect as background luminance.
Further, when the lighting device 60 has a dimming function, the luminance of light to be irradiated is adjusted according to the brightness of the room 101, and glare can be efficiently suppressed with power saving.

[Modification 1 of the sixth embodiment]
Next, a daylighting device 6A according to Modification 1 of the sixth embodiment will be described. FIG. 47 is a diagram illustrating an overall configuration of a daylighting device 6A according to the first modification.
The basic structure of the daylighting device 6A of Modification 1 is substantially the same as that of the above-described sixth embodiment, except that the second base 62 provided with the light diffusing member 20 is further provided. In addition, about the component of the same aspect as the above-mentioned 6th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

The lighting device 6 </ b> A includes a first base 61 and a second base 62 having optical transparency, an outer frame 65 </ b> A provided on the periphery of the first base 61 and the second base 62, and an illumination device 60. ,have.
On the first surface 61a of the first base 61, the daylighting unit 11 is provided over the entire surface to form the daylighting area SA. On the first surface 62a of the second base material 62, the light diffusion member 20 is provided over the entire surface to form a light diffusion region KA5.
The outer frame 65A has the same configuration as that of the sixth embodiment and has a function of reflecting the light emitted from the lighting device 60 toward the indoor 101 side.

  According to the daylighting device 6A of the first modification, the same effects as the daylighting device 6 of the sixth embodiment can be obtained. Further, according to the daylighting device 6A of the first modification, the light diffusion region KA5 is provided so as to overlap with the daylighting region SA. Therefore, the light is scattered by the light diffusion member 20, and the light intensity is attenuated. Therefore, the glare is reduced as compared with the case where the light diffusing member 20 is not provided. Further, the light diffusing member 20 scatters light to make the intensity distribution uniform, and the ceiling and wall surface of the room 101 are more uniformly illuminated.

In this modification, the daylighting area SA is provided on the entire surface of the first base material 61, and the light diffusion area KA <b> 5 is provided on the entire surface of the second base material 62. Further, when viewed from the normal direction of the first base material 61 (or the second base material 62), the daylighting area SA and the light diffusion area KA5 completely overlap. However, for example, areas in which the daylighting area SA and the light diffusion area KA are not formed may be provided on the periphery of the first base material 61 and the second base material 62, respectively (see, for example, FIG. 12). Further, the light diffusion region KA5 may be provided in a wide area with respect to the daylighting region SA (see, for example, FIGS. 19A and 19B). Further, the daylighting area SA6 may be provided in a wide area with respect to the light diffusion area KA (see, for example, FIGS. 27A and 27B).
Further, the outer frame 65A may be formed with a plurality of window portions, and the first base material 61 and the second base material 62 may be disposed in each of the window portions (see, for example, FIG. 36).

[Lighting control system]
FIG. 48 is a diagram showing a room model including a lighting device and an illumination dimming system, and is a cross-sectional view taken along the line JJ ′ of FIG. FIG. 49 is a plan view showing the ceiling of the room model 2000. FIG.

  In the room model 2000, the ceiling material constituting the ceiling 2003a of the room 2003 into which external light is introduced may have high light reflectivity. As shown in FIGS. 48 and 49, a light-reflective ceiling material 2003A is installed on the ceiling 2003a of the room 2003 as a light-reflective ceiling material. The light-reflective ceiling material 2003A is intended to promote the introduction of outside light from the daylighting device 2010 installed in the window 2002 into the interior of the room, and is installed on the ceiling 2003a near the window. Yes. Specifically, it is installed in a predetermined area E (an area about 3 m from the window 2002) of the ceiling 2003a.

  As described above, the light-reflective ceiling material 2003A is configured to transmit the outside light introduced into the room through the window 2002 in which the daylighting device 2010 (the daylighting device of any of the above-described embodiments) is installed. Efficiently leads to the back. The external light introduced from the lighting device 2010 toward the indoor ceiling 2003a is reflected by the light-reflective ceiling material 2003A and changes its direction to illuminate the desk surface 2005a of the desk 2005 placed in the interior of the room. The effect of brightening the desk top surface 2005a is exhibited.

  The light-reflective ceiling material 2003A may be diffusely reflective or specularly reflective, but has the effect of brightening the desk top surface 2005a of the desk 2005 placed in the interior of the room, and is in the room. In order to achieve both effects of suppressing glare light that is unpleasant for humans, it is preferable that the characteristics of the two are appropriately mixed.

  As described above, most of the light introduced into the room by the daylighting apparatus 2010 is directed to the ceiling near the window 2002, but the amount of light in the vicinity of the window 2002 is often sufficient. Therefore, by using together the light-reflective ceiling material 2003A as described above, the light incident on the ceiling (region E) in the vicinity of the window can be distributed toward the back of the room where the amount of light is small compared to the window.

  The light-reflective ceiling material 2003A is formed by, for example, embossing a metal plate such as aluminum with unevenness of about several tens of microns, or depositing a metal thin film such as aluminum on the surface of a resin substrate on which similar unevenness is formed. Or can be made. Or the unevenness | corrugation formed by embossing may be formed in the curved surface of a larger period.

  Furthermore, by appropriately changing the embossed shape formed on the light-reflective ceiling material 2003A, it is possible to control the light distribution characteristics of light and the light distribution in the room. For example, when embossing is performed in a stripe shape extending toward the back of the room, the light reflected by the light-reflective ceiling material 2003A is in the left-right direction of the window 2002 (direction intersecting the longitudinal direction of the unevenness). spread. When the size and direction of the window 2002 in the room 2003 are limited, the light is reflected in the horizontal direction by the light-reflective ceiling material 2003A and the interior of the room 2003 is moved to the back of the room. It can be reflected toward.

  The daylighting device 2010 is used as part of the illumination dimming system in the room 2003. The lighting dimming system includes, for example, a lighting device 2010, a plurality of indoor lighting devices 2007, a solar radiation adjusting device 2008 installed in a window, a control system thereof, and a light-reflective ceiling material 2003A installed on a ceiling 2003a. And the constituent members of the entire room including

  In the window 2002 of the room 2003, a lighting device 2010 is installed on the upper side, and a solar radiation adjusting device 2008 is installed on the lower side. Here, a blind is installed as the solar radiation adjustment device 2008, but this is not a limitation.

  In the room 2003, a plurality of indoor lighting devices (lighting devices) 2007 are arranged in a grid pattern in the left-right direction (Y direction) of the window 2002 and the depth direction (X direction) of the room. The plurality of indoor lighting devices 2007 together with the daylighting device 2010 constitute an entire lighting system of the room 2003.

As shown in FIGS. 48 and 49, for example, the ceiling length _{L 1} in the left-right direction (Y-direction) is 18m, the length _{L 2} in the depth direction of the room 2003 (X direction) of the office 9m windows 2002 2003a Indicates. Here, the indoor lighting devices 2007 are arranged in a grid pattern with an interval P of 1.8 m in the horizontal direction (Y direction) and the depth direction (X direction) of the ceiling 2003a.
More specifically, 50 indoor lighting devices 2007 are arranged in 10 rows (Y direction) × 5 columns (X direction).

  The indoor lighting device 2007 includes an indoor lighting fixture 2007a, a brightness detection unit 2007b, and a control unit 2007c. The indoor lighting fixture 2007a is configured by integrating the brightness detection unit 2007b and the control unit 2007c. It is.

  The indoor lighting device 2007 may include a plurality of indoor lighting fixtures 2007a and a plurality of brightness detection units 2007b. However, one brightness detector 2007b is provided for each indoor lighting device 2007a. The brightness detection unit 2007b receives the reflected light of the irradiated surface illuminated by the indoor lighting fixture 2007a, and detects the illuminance of the irradiated surface. Here, the brightness detector 200b detects the illuminance of the desk surface 2005a of the desk 2005 placed indoors.

One control unit 2007c provided for each room lighting device 2007 is connected to each other. Each indoor lighting device 2007 is configured such that the illuminance of the desk top surface 2005a detected by each brightness detection unit 2007b becomes a constant target illuminance L ₀ (for example, average illuminance: 750 lx) by the control units 2007c connected to each other. The feedback control is performed to adjust the light output of the LED lamp of each indoor lighting fixture 2007a.

  FIG. 50 is a graph showing the relationship between the illuminance of light (natural light) collected indoors by the daylighting device and the illuminance (illumination dimming system) by the indoor lighting device. In FIG. 50, the vertical axis indicates the illuminance (lx) on the desk surface, and the horizontal axis indicates the distance (m) from the window. Moreover, the broken line in the figure indicates the target illuminance in the room. (●: Illuminance by lighting device, △: Illuminance by indoor lighting device, ◇: Total illumination)

  As shown in FIG. 50, the desk surface illuminance due to the light collected by the lighting device 2010 is brighter in the vicinity of the window, and the effect becomes smaller as the distance from the window increases. In a room to which the daylighting device 2010 is applied, such an illuminance distribution in the back direction of the room is generated by natural daylighting from a window in the daytime. Therefore, the daylighting device 2010 is used in combination with the indoor lighting device 2007 that compensates for the illuminance distribution in the room. The indoor lighting device 2007 installed on the indoor ceiling detects the average illuminance below each device by the brightness detection unit 2007b, and is dimmed and controlled so that the desk surface illuminance of the entire room becomes a constant target illuminance L0. Lights up. Therefore, the S1 and S2 rows installed in the vicinity of the window are hardly lit, and are lit while increasing the output toward the back of the room with the S3, S4, and S5 rows. As a result, the desk surface of the room is illuminated by the sum of the illuminance by natural lighting and the illumination by the room lighting device 2007, and the illuminance of the desk surface that is sufficient for working throughout the room is 750 lx (“JIS Z9110 illumination). "Recommended maintenance illuminance in the office of" General "" can be realized.

  As described above, by using the daylighting device 2010 and the illumination dimming system (indoor lighting device 2007) in combination, it becomes possible to deliver light to the back of the room and further improve the brightness of the room. In addition, it is possible to secure sufficient illumination on the desk surface, which is sufficient for work throughout the room. Therefore, a more stable and bright light environment can be obtained without being affected by the season or weather.

  The preferred embodiments according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the examples. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to. You may combine the structure of each embodiment suitably.

In each embodiment, the case where the outer frame of the lighting device was fixed to the window glass 100 was illustrated.
However, the lighting device of each embodiment may be hung on the indoor 101 side of the window glass 100 as shown in FIGS. 51A and 51B. 51A and 51B will be described based on the daylighting device 1 of the first embodiment, but the same configuration is possible even with daylighting devices of other embodiments.
In the daylighting apparatus 1, a recess 105 is provided on the ceiling of the room 101 along the wall 103 on which the window glass 100 is provided. A curtain rail 106 is accommodated in the recess 105. In the example shown in FIG. 51A, the daylighting apparatus 1 is suspended from the runner 106 a of the curtain rail 106. In the example shown in FIG. 51B, the daylighting apparatus 1 is fixed to the curtain rail 106 using a dedicated jig 107.
Even when such a fixing method is employed, effects according to the respective embodiments can be obtained.

  Moreover, in each embodiment, although the example of the structure which installs a daylighting device in the room inner side of one window glass was given, the multilayer glass may be sufficient as the window glass in each embodiment. Furthermore, the lighting device may be accommodated in the internal space of the double-glazed glass. In addition, the specific configuration regarding the number, arrangement, shape, size, material, and the like of each component constituting the daylighting system can be changed as appropriate.

Further, the daylighting unit 11 and the (first) light diffusing member 20 shown in each embodiment are switched in position so that the light diffusing member 20 is disposed on the outdoor 102 side and the daylighting unit 11 is disposed on the indoor 101 side. Also good. An example of such a configuration is shown in FIG.
Moreover, the lighting part 11 shown in each embodiment is not limited to being provided on the surface on the outdoor 102 side of the base material, but may be provided on the surface on the indoor 101 side. An example of such a configuration is shown in FIG.
52 and 53, a member denoted by reference numeral 71 represents a base material (first base material or second base material).

FIG. 54 shows an example of a structure provided with a film member 7 that can be employed in the daylighting apparatus of each embodiment.
The film member 7 is provided through the adhesive layer 8 so as to cover a region through which light passes in the daylighting device of each embodiment. The film member 7 is, for example, an ultraviolet cut film that cuts ultraviolet rays. In this case, the film member 7 can suppress irradiation of ultraviolet rays into the indoor space.
The film member 7 may be an infrared cut film that cuts infrared rays.
In this case, the film member 7 can suppress that the indoor space becomes hot due to radiant heat caused by infrared rays. In this case, an adhesive having an ultraviolet cutting function may be employed as the adhesive layer 8.
The film member 7 may be colored or drawn in consideration of design properties. In this case, the film member 7 may be a layer for improving the design properties, and the adhesive layer 8 may be configured to have an ultraviolet cut function.
In the example shown in FIG. 54, the film member 7 is provided on the indoor 101 side of the window glass 100, but may be provided on any one surface of each base 71 in addition to this. In that case, the film member 7 may be provided between the daylighting unit 11 and the base material 71, or may be provided between the light diffusion member 20 and the base material 71. By having the film member 7, the daylighting device can suppress irradiation of ultraviolet rays to a person in the room.
The lighting device of each embodiment may have a structure in which the above-described film member 7 is provided.

  In each embodiment, even if the region functioning as the background luminance is not necessarily positioned so as to surround the daylighting region, the transmitted light functions as the background luminance, and gives a certain effect on glare suppression. This point will be described based on the daylighting device 1 of the first embodiment (see FIG. 1).

  FIG. 55A is a front view of the base material 10 of the daylighting apparatus 1 of the first embodiment. FIG. 55A shows the positional relationship between the light transmission area TA and the daylighting area SA in the substrate 10. In the daylighting apparatus 1 of the first embodiment described above, the light transmission area TA surrounds the daylighting area SA as seen from the normal direction of the substrate 10. However, the light transmission area TA may not surround the daylighting area SA. Such an example will be described with reference to FIGS. 55B and 55C. FIG. 55B and FIG. 55C are both front views of the base material 10 and are diagrams showing the positional relationship between the light transmission area and the daylighting area that can be employed in the first embodiment.

  The light transmission area TA10 of FIG. 55B is arranged on both the upper and lower sides of the daylighting area SA10 and is not arranged on the left and right sides of the daylighting area SA10. Even in the case where the light transmission area TA10 is arranged in this way, the light transmitted through the light transmission area TA10 functions as background luminance for the daylighting area SA10 as a glare generation source. Thereby, compared with the case where there is no light transmission area | region TA10, the glare of lighting area SA10 can be suppressed.

  Further, the light transmission area TA11 in FIG. 55C is arranged only on the upper side with respect to the daylighting area SA11. Even in the case where the light transmission area TA11 is arranged in this way, the light transmitted through the light transmission area TA11 functions as background luminance, and the glare of the lighting area SA11 is reduced as compared with the case where there is no light transmission area TA11. Can be suppressed.

  As described based on FIGS. 55B and 55C, light from an area arranged around the daylighting area functions as background luminance, and can contribute to glare suppression in the daylighting area. That is, if the light transmission region is arranged adjacent to the daylighting region, glare in the daylighting region can be suppressed. In addition to the arrangement example described above, the light transmission area may be arranged on either the left or right side of the daylighting area, or both.

  Further, here, the region irradiated with light serving as background luminance has been described based on the first embodiment, but the same applies to each embodiment, and the region contributing to glare suppression as background luminance is any of the surroundings. It only has to be arranged on either side. For example, in the daylighting device 5 (FIG. 39, FIG. 40A and FIG. 40B) of the fifth embodiment, the light emitting area HA is disposed so as to surround the daylighting area SA6. However, if the light emitting area HA is arranged anywhere around the daylighting area SA6, a certain effect of gray suppression can be obtained.

  One embodiment of the present invention can be applied to a lighting device or the like that needs to suppress glare that is uncomfortable for a person in a room.

1, 1A, 1B, 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I, 3, 3A, 3B, 3C, 3D, 4, 4A, 5, 5A, 5B, 5C, 6 ... Daylighting device 10, 21, 31, 41, 51, 61 (first) base material, 10a, 21a, 22a, 31a, 32a, 41a, 42a, 43a, 51a, 52a, 53a, 61a ... first surface, 10b, 21b, 22b, 31b, 32b, 41b, 42b, 43b, 51b, 52b, 53b ... second surface, 11 ... lighting part, 12 ... gap part, 15, 25, 35, 45, 45A, 65 ... outer frame Frame, 20 ... (first) light diffusion member, 22, 32, 42, 52 ... second base material, 23, 43, 53 ... third base material, 30 ... second light diffusion member (light diffusion layer) , 45, 45A ... Outer frame ((second) light diffusion member), 55, 55 ... outer frame (light emitting member), 56 ... light emitting source, 57 ... case ((second) light diffusing member), 60 ... lighting device, 100 ... window glass, 101 ... indoor, 102 ... outdoor, 1000 ... room model , HA... Light emitting region, JA... (Second) light diffusion region, KA, KA1 to KA5... (First) light diffusion region, M .. human (observer), SA, SA1 to SA6. , TA1 to TA3 ... light transmission region

Claims (18)

A substrate having optical transparency;
A plurality of daylighting portions having light permeability provided on the first surface of the substrate;
A gap provided between the plurality of daylighting units,
A daylighting apparatus comprising: a daylighting region in which light is transmitted through the plurality of daylighting units; and a light transmission region in which light is transmitted through the substrate without passing through the plurality of daylighting units.   The daylighting apparatus according to claim 1, wherein the light transmission region is disposed around the daylighting region when viewed from the above.   The daylighting device according to claim 1, comprising a plurality of the daylighting areas. A light diffusing member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units;
The daylighting device according to any one of claims 1 to 3, wherein at least a part of the light diffusing member is provided at a position overlapping the daylighting region when viewed from the normal direction of the base material. The daylighting device according to claim 4, wherein a part of the light diffusing member is provided at a position overlapping the light transmission region when viewed from the normal direction of the base material. A substrate having optical transparency;
A plurality of daylighting portions having light permeability provided on the first surface of the substrate;
A gap provided between the plurality of daylighting units;
A light diffusing member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units,
A daylighting region through which light passes through the plurality of daylighting units, and a light diffusion region through which light passes through the light diffusing member,
The said light diffusion area | region is a lighting apparatus provided in the position which overlaps with a part of said lighting area seeing from the normal line direction of the said base material.   The said light diffusion area | region is a lighting apparatus of Claim 6 provided in the center of the said lighting area seeing from the normal line direction of the said base material.   The daylighting device according to claim 6 or 7, comprising a plurality of the light diffusion regions.   The daylighting device according to any one of claims 6 to 8, further comprising a light diffusion layer that diffuses light that is transmitted through the daylighting region and is not transmitted through the light diffusion region. A substrate having optical transparency;
A plurality of daylighting portions having light permeability provided on the first surface of the substrate;
A gap provided between the plurality of daylighting units;
A first light diffusion member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units;
A second light diffusing member for diffusing light,
A daylighting region in which light is transmitted through the plurality of daylighting units, a first light diffusion region in which light is transmitted through the first light diffusing member, and light is transmitted through the second light diffusing member. A second light diffusion region to transmit,
When viewed from the normal direction of the base material, the daylighting region and the first light diffusion region are provided at positions overlapping each other, and the second light diffusion region includes the daylighting region and the first light. A daylighting device provided outside the diffusion region.   The lighting device according to claim 10, comprising a plurality of the first light diffusion regions. A substrate having optical transparency;
A plurality of daylighting portions having light permeability provided on the first surface of the substrate;
A gap provided between the plurality of daylighting units;
A light emitting member that emits light,
A daylighting region through which light passes through the plurality of daylighting units, and a light emitting region provided with the light emitting member,
The light emitting device is a daylighting device provided outside the daylighting region.   A lighting device further comprising a light diffusing member that diffuses light emitted from the plurality of daylighting units or light incident on the plurality of daylighting units.   The daylighting device according to claim 12 or 13, comprising a plurality of the daylighting regions.   The lighting device according to any one of claims 12 to 14, wherein the light-emitting member has a dimming function. A substrate having optical transparency;
A plurality of daylighting portions having light permeability provided on the first surface of the substrate;
A gap provided between the plurality of daylighting units;
An illumination device comprising: an illumination device that illuminates the surroundings of a daylighting area provided with the plurality of daylighting units.   The daylighting device according to any one of claims 1 to 16, wherein the plurality of daylighting units are separate from the base material.   The daylighting device according to any one of claims 1 to 16, wherein the plurality of daylighting units are integrated with the base material.

Images