WO2018131584A1 - Daylighting device - Google Patents

Daylighting device Download PDF

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Publication number
WO2018131584A1
WO2018131584A1 PCT/JP2018/000253 JP2018000253W WO2018131584A1 WO 2018131584 A1 WO2018131584 A1 WO 2018131584A1 JP 2018000253 W JP2018000253 W JP 2018000253W WO 2018131584 A1 WO2018131584 A1 WO 2018131584A1
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WO
WIPO (PCT)
Prior art keywords
sheet
daylighting
screen
light
daylighting sheet
Prior art date
Application number
PCT/JP2018/000253
Other languages
French (fr)
Japanese (ja)
Inventor
俊平 西中
透 菅野
俊 植木
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2018131584A1 publication Critical patent/WO2018131584A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S11/00—Non-electric lighting devices or systems using daylight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses

Definitions

  • One embodiment of the present invention relates to a daylighting apparatus.
  • This application claims priority on Japanese Patent Application No. 2017-001746 filed in Japan on January 10, 2017, the contents of which are incorporated herein by reference.
  • Patent Document 1 A configuration in which a daylighting sheet is attached to a cloth is known (see, for example, Patent Document 1).
  • Patent Document 1 describes a roll screen provided with winding means for winding a cloth on which a daylighting sheet is attached.
  • An object of one embodiment of the present invention is to provide a daylighting device that can suppress the breakage of a holding unit that holds a daylighting sheet with respect to a screen in view of the above problems.
  • One aspect of the daylighting device of the present invention includes a screen having translucency, a base sheet having translucency, and an optical functional layer disposed on one surface of the base sheet. And a holding means for holding the daylighting sheet with respect to the screen, and the daylighting sheet has a non-fixed portion that is not directly fixed to the screen.
  • the holding unit may include a fixing unit that directly fixes a part of the daylighting sheet to the screen.
  • the non-fixed portion may include at least a part of the outer edge of the daylighting sheet.
  • the fixing means may fix the upper end portion of the daylighting sheet directly to the screen, and a portion of the daylighting sheet located below the fixing means may be the non-fixed portion.
  • the thermal expansion coefficient in the vertical direction of the base sheet may be larger than the thermal expansion coefficient in the width direction perpendicular to the vertical direction of the base sheet.
  • the holding means includes a light-transmitting auxiliary sheet disposed on the surface of the daylighting sheet opposite to the screen, and the auxiliary sheet is directly fixed to the surface of the screen. It is good also as a structure.
  • the holding means has a bag-shaped storage part provided on the screen, the storage part has translucency, the daylighting sheet is stored in the storage part, and the entire daylighting sheet is It is good also as a structure which is the said non-fixed part.
  • the storage unit may have a cover that covers the daylighting sheet, and the cover may have an anisotropic diffusion function of diffusing incident light.
  • a plurality of the daylighting sheets may be provided in a plane parallel to the plane of the screen.
  • the plurality of daylighting sheets may have different optical characteristics.
  • the daylighting sheet may have an optical sheet disposed so as to overlap the base material sheet, and the optical sheet may have a different optical characteristic from the optical functional layer.
  • the optical functional layer includes a plurality of daylighting units arranged in a predetermined direction, and the daylighting unit reflects at least a part of light incident on the daylighting unit toward one side of the predetermined direction. It is good also as a structure which has a reflective surface to do.
  • the daylighting sheet may have a light diffusing part into which the light emitted from the daylighting part is incident.
  • a winding mechanism that can wind the screen is further provided, and a roll screen may be used.
  • a daylighting apparatus that can suppress the breakage of the holding means for holding the daylighting sheet with respect to the screen.
  • FIG. 1 is a diagram illustrating a room in which the roll screen according to the first embodiment is arranged.
  • FIG. 2 is a rear view of the roll screen according to the first embodiment.
  • FIG. 3 is a perspective view showing the daylighting sheet of the first embodiment.
  • 4 is a view showing the roll screen of the first embodiment, and is a cross-sectional view taken along the line IV-IV in FIG.
  • FIG. 5 is a view of the roll screen according to the second embodiment viewed from the rear side.
  • FIG. 6 is a view of the roll screen of the third embodiment viewed from the rear side.
  • FIG. 7 is a view of the roll screen of the fourth embodiment viewed from the rear side.
  • FIG. 8 is a view of the roll screen of the fifth embodiment viewed from the rear side.
  • FIG. 9 is a view of the roll screen of the sixth embodiment viewed from the rear side.
  • FIG. 10 is a view of the roll screen of the seventh embodiment viewed from the rear side.
  • FIG. 11 is a view of the roll screen of the eighth embodiment viewed from the rear side.
  • FIG. 12 is a view of the roll screen of the ninth embodiment viewed from the rear side.
  • FIG. 13 is a view showing a roll screen of the ninth embodiment, and is a cross-sectional view taken along the line XIII-XIII in FIG.
  • FIG. 14 is a view of the roll screen of the tenth embodiment viewed from the rear side.
  • FIG. 15 is a view of the roll screen of the eleventh embodiment viewed from the rear side.
  • FIG. 16 is a view of the roll screen of the twelfth embodiment as viewed from the rear side.
  • FIG. 17 is a view of the roll screen according to the thirteenth embodiment as viewed from the rear side.
  • FIG. 18 is a view of the roll screen of the fourteenth embodiment viewed from the rear side.
  • FIG. 19 is a view of the roll screen of the fifteenth embodiment viewed from the rear side.
  • FIG. 20 is a view of the roll screen of the sixteenth embodiment viewed from the rear side.
  • FIG. 21 is a view of the roll screen of the seventeenth embodiment viewed from the rear side.
  • FIG. 22 is a view of the roll screen of the eighteenth embodiment viewed from the rear side.
  • FIG. 23 is a view showing the roll screen of the eighteenth embodiment and is a cross-sectional view taken along the line XXIII-XXIII in FIG.
  • FIG. 24 is a rear view of the roll screen according to the nineteenth embodiment.
  • FIG. 25 is a rear view of the roll screen according to the twentieth embodiment.
  • 26 is a view showing a room in which the roll screen according to the twenty-first embodiment is installed, and is a cross-sectional view taken along the line XXVI-XXVI in FIG.
  • FIG. 27 is a plan view showing a ceiling of a room in which the roll screen according to the twenty-first embodiment is installed.
  • FIG. 28 shows an example of the relationship between the desk surface illuminance by the light (sunlight) collected in the room through the roll screen of the twenty-first embodiment and the desk top illuminance by the light emitted from the room lighting device. It is a graph.
  • the Z-axis direction is the vertical direction Z.
  • the X-axis direction and the Y-axis direction are one direction in the horizontal direction orthogonal to the Z-axis direction and are orthogonal to each other.
  • the roll screen 10 of this embodiment is attached to the ceiling C in the room R, for example, as shown in FIG.
  • the roll screen 10 is arranged in the room R so as to cover the window WD.
  • the roll screen 10 includes a screen 20, a winding mechanism 40, a daylighting sheet 30, and a holding unit 80.
  • the screen 20 has translucency.
  • the screen 20 can be wound up by the winding mechanism 40.
  • “having translucency” includes that at least part of light incident on the screen 20 is transmitted through the screen 20.
  • the visible light transmittance of the screen 20 is, for example, 30% or more.
  • the material of the screen 20 will not be specifically limited if it has translucency.
  • the screen 20 may be, for example, a cloth made of fibers or a resin sheet.
  • FIG. 1 and 2 show a state where the screen 20 is not taken up by the take-up mechanism 40.
  • FIG. Hereinafter, a state where the screen 20 is not wound by the winding mechanism 40 is referred to as a “deployed state”.
  • the screen 20 has a rectangular shape that is long in the vertical direction Z in the unfolded state.
  • the screen 20 is disposed so that the thickness direction is parallel to the X-axis direction, and the short direction in the unfolded state is parallel to the Y-axis direction.
  • a direction parallel to the X-axis direction is referred to as a thickness direction X
  • a direction parallel to the Y-axis direction is referred to as a width direction Y.
  • the positive side in the X-axis direction is referred to as “front side”
  • the negative side in the X-axis direction is referred to as “rear side”.
  • the side close to the center of the roll screen in the width direction Y is referred to as “width direction inner side”, and the side far from the center of the roll screen in the width direction Y is referred to as “width direction outer side”.
  • the vertical direction, the front side, the rear side, and the like are names for explaining the arrangement relationship of each part in this specification, and the actual arrangement relationship etc. is an arrangement relationship other than those limited by these names. There may be.
  • Dimension H1 in the vertical direction Z of the screen 20 in the unfolded state is 2700 mm, for example.
  • a dimension W1 in the width direction Y of the screen 20 is, for example, 1800 mm.
  • the winding mechanism 40 is accommodated in a recess CA provided in the ceiling C as shown in FIG.
  • the winding mechanism 40 can wind the screen 20.
  • the winding mechanism 40 has a cylindrical winding core 41 extending in the width direction Y.
  • the upper end of the screen 20 is fixed to the winding core 41.
  • the winding mechanism 40 can wind the screen 20 by winding the screen 20 around the winding core 41 by rotating the winding core 41 around the central axis parallel to the width direction Y.
  • the lower end of the screen 20 moves upward by being wound by the winding mechanism 40.
  • the winding mechanism 40 can unwind the wound screen 20.
  • the lower end of the screen 20 moves downward by being unwound by the winding mechanism 40.
  • the screen 20 is unfolded and covers the entire front surface of the window WD.
  • the daylighting sheet 30 is disposed so as to overlap the screen 20.
  • the daylighting sheet 30 is disposed so as to overlap the window WD side (rear side) surface of the screen 20.
  • the daylighting sheet 30 has a rectangular shape that is long in the width direction Y.
  • the dimension H3 in the vertical direction Z of the daylighting sheet 30 is, for example, 500 mm.
  • the dimension W2 in the width direction Y of the daylighting sheet 30 is 1750 mm, for example.
  • the daylighting sheet 30 includes a base sheet 50 and an optical functional layer 60.
  • the base sheet 50 is fixed to the rear surface of the screen 20.
  • the base material sheet 50 has translucency.
  • the base sheet 50 is a rectangular sheet whose main surface is parallel to the vertical direction Z and long in the width direction Y.
  • the base sheet 50 is, for example, a stretched film.
  • stretching direction of the base material sheet 50 is the up-down direction Z, for example.
  • the thermal expansion coefficient in the vertical direction Z of the base sheet 50 is larger than the thermal expansion coefficient in the width direction Y orthogonal to the vertical direction Z of the base sheet 50.
  • the base sheet 50 is made of a light transmissive resin such as a thermoplastic polymer, a thermosetting resin, or a photopolymerizable resin.
  • a light transmissive resin such as a thermoplastic polymer, a thermosetting resin, or a photopolymerizable resin.
  • the light transmissive resin for example, a resin made of an acrylic polymer, an olefin polymer, a vinyl polymer, a cellulose polymer, an amide polymer, a fluorine polymer, a urethane polymer, a silicone polymer, an imide polymer, or the like is used. Can do.
  • the base sheet 50 may have a laminated structure in which a plurality of materials are laminated.
  • the total light transmittance of the base sheet 50 is preferably 90% or more as defined in JIS K7361-1. Thereby, sufficient transparency can be obtained.
  • the thickness of the base material sheet 50 is preferably about 50 ⁇ m or more and 500 ⁇ m or less in consideration of the storage by the winding mechanism 40.
  • the optical functional layer 60 is disposed on the rear surface 50a which is the rear surface (one side, -X side) of the base sheet 50.
  • the optical functional layer 60 has a plurality of daylighting portions 61 arranged in the vertical direction (predetermined direction) Z.
  • the daylighting part 61 is a fine convex part of the order of several tens to several hundreds of micrometers that protrudes rearward from the rear surface 50a of the base sheet 50.
  • Each daylighting unit 61 extends in a direction orthogonal to the vertical direction Z, that is, in the width direction Y in FIG. In the present embodiment, the daylighting unit 61 extends from one end in the width direction Y of the base sheet 50 to the other end.
  • the daylighting unit 61 has a polygonal cross section (ZX cross section) shape orthogonal to the longitudinal direction (width direction Y) of the daylighting unit 61.
  • the daylighting unit 61 has a pentagonal cross-sectional shape in which the shape on both sides in the vertical direction of the vertical line Q is asymmetric with respect to the vertical line Q of the base material sheet 50 passing through the vertex 61a farthest from the base material sheet 50 in the daylighting unit 61. It is a polygonal columnar structure.
  • the cross-sectional shape of the daylighting unit 61 is not limited to the illustrated one, and can be appropriately changed in design according to the application of the roll screen 10 or the like.
  • the daylighting unit 61 includes a reflection surface 61c that reflects at least a part of the light incident on the daylighting unit 61 toward the upper side (one side in a predetermined direction).
  • the optical functional layer 60 has a gap portion 62 provided between a plurality of daylighting portions 61. Air exists in the gap 62 between the adjacent daylighting portions 61. Therefore, the refractive index of the gap 62 is approximately 1.0. By setting the refractive index of the gap 62 to 1.0, the critical angle at the interface between the gap 62 and the daylighting portion 61 is minimized.
  • the refractive index of the base sheet 50 and the refractive index of the daylighting unit 61 are substantially equal.
  • the refractive index of the base material sheet 50 and the refractive index of the daylighting unit 61 are greatly different, when light enters the basement sheet 50 from the daylighting unit 61, unnecessary light is generated at the interface between the daylighting unit 61 and the base material sheet 50. Refraction and reflection may occur. In this case, desired lighting characteristics may not be obtained.
  • the refractive index of the base sheet 50 substantially the same as the refractive index of the daylighting unit 61, it is easy to obtain desired lighting characteristics.
  • the daylighting unit 61 is made of an organic material having light transmissivity and photosensitivity such as an acrylic resin, an epoxy resin, or a silicone resin. Moreover, the lighting part 61 may be comprised with the mixture which mixed the polymerization initiator, the coupling agent, the monomer, the organic solvent, etc. in these organic materials.
  • the mixture constituting the daylighting unit 61 contains a polymerization initiator
  • the polymerization initiator is a stabilizer, an inhibitor, a plasticizer, a fluorescent brightening agent, a release agent, a chain transfer agent, and other photopolymerizable monomers.
  • Various additional components such as a monomer may be contained.
  • the total light transmittance of the daylighting unit 61 is preferably 90% or more in accordance with JIS K7361-1. Thereby, sufficient transparency can be obtained.
  • the holding means 80 holds the daylighting sheet 30 against the screen 20.
  • the holding unit 80 includes a fixing unit 70 that directly fixes a part of the daylighting sheet 30 to the screen 20.
  • the fixing means 70 is not particularly limited as long as the daylighting sheet 30 can be fixed to the screen 20.
  • the fixing means 70 may be an adhesive, an adhesive, a metal fastener, a resin fastener, or suture with a thread. It may be.
  • the fixing means 70 is an adhesive tape.
  • the fixing means 70 preferably has translucency. The fixing means 70 bonds the rear surface of the screen 20 and the front surface of the base sheet 50.
  • the fixing means 70 is disposed at the upper end between the daylighting sheet 30 and the screen 20 in the thickness direction X. That is, the fixing means 70 directly fixes the upper end portion of the daylighting sheet 30 to the screen 20. As shown in FIG. 2, the fixing means 70 extends in the width direction Y from one end to the other end in the width direction Y of the daylighting sheet 30. That is, the fixing means 70 fixes the upper end portion of the daylighting sheet 30 directly to the screen 20 over the entire width direction Y.
  • the daylighting sheet 30 has a non-fixed portion 30 a that is not directly fixed to the screen 20.
  • the non-fixed portion 30 a is a portion of the daylighting sheet 30 that is not fixed to the screen 20 by the fixing means 70.
  • the portion of the daylighting sheet 30 that is located below the fixing means 70 is the non-fixed portion 30a.
  • the non-fixed portion 30 a includes at least a part of the outer edge of the daylighting sheet 30.
  • the non-fixed portion 30 a includes a lower edge and a portion excluding the upper ends of the edges on both sides in the width direction, of the outer edge of the daylighting sheet 30.
  • a gap DP is provided between the non-fixed portion 30 a and the screen 20.
  • the gap DP is open on the lower side and both sides in the width direction Y.
  • the fixed part is fixed directly to the object means that the fixed part is fixed in direct contact with the object, or the fixed part and the object are fixed.
  • a fixing means for connecting the fixed part and the object is provided between the fixed part and the fixed part to be fixed to the object.
  • a fixing means 70 for connecting the upper end portion of the daylighting sheet 30 and the screen 20 is provided between the upper end portion of the daylighting sheet 30 as the fixed portion and the screen 20. The upper end is fixed to the screen 20.
  • the light L1 is incident on the daylighting sheet 30 from obliquely upward on the rear side, as shown in FIG.
  • the light L1 is light that enters the room R from a relatively upper portion of the window WD among the light L that enters the room R from the outside (rear side) of the window WD.
  • the light L1 incident on the daylighting sheet 30 enters the daylighting unit 61 from the light incident end surface 61 b inclined upward among the plurality of surfaces of the daylighting unit 61.
  • the light L1 incident on the daylighting unit 61 is totally reflected by the reflection surface 61c, travels obliquely upward on the front side, and is emitted from the emission surface 61d of the daylighting unit 61.
  • L1 emitted from the daylighting unit 61 passes through the base sheet 50, the gap DP, and the screen 20, and is emitted obliquely upward on the front side. Thereby, the light L1 emitted from the daylighting sheet 30 illuminates the ceiling surface of the ceiling C as shown in FIG.
  • the light L2 that enters the room R from a relatively lower part of the window WD is not incident on the daylighting sheet 30.
  • the light enters the screen 20 from obliquely upward on the rear side. More specifically, the light L2 is incident on a portion of the screen 20 that is located below the daylighting sheet 30.
  • the light L2 passes through the screen 20 and is irradiated on the floor surface of the room R.
  • the daylighting sheet 30 is disposed at a position where the light L entering the room R from the outside (rear side) of the window WD is difficult to directly enter the eyes of the person M in the room R.
  • the light L1 is light that enters the room R from a relatively upper portion of the window WD, when the light L1 passes through the screen 20 without being reflected by the daylighting sheet 30, the light L1 is the light of the person M. Easy to get into eyes. Therefore, it is preferable to provide a daylighting sheet 30 at a position where the light L1 is incident and reflect the light L1 obliquely upward on the front side.
  • the light L2 is light that enters the room R from a relatively lower part of the window WD, it is difficult to directly enter the eyes of the person M even if it is not reflected by the daylighting sheet 30. Rather, the light L ⁇ b> 2 may be directly incident on the eyes of the person M by being reflected obliquely upward on the front side by the daylighting sheet 30. Therefore, it is preferable not to provide the daylighting sheet 30 at the position where the light L2 is incident.
  • the daylighting sheet 30 is disposed at a position where the light L1 is incident while the light L2 is not incident. That is, the lower end position of the daylighting sheet 30 is determined to be between the light L1 and the light L2. This suppresses the light L from directly entering the eyes of the person M. Further, since the light L1 of the light L is irradiated on the ceiling surface and the light L2 of the light L is irradiated on the floor surface, the light L entering the room R from the window WD causes the ceiling surface and the floor surface to be irradiated. Both can be illuminated and the interior of the room R can be brightened.
  • the lower end position of the daylighting sheet 30, that is, the distance H2 from the lower end of the screen 20 shown in FIG. 2 to the lower end of the daylighting sheet 30 is, for example, 2000 mm.
  • the upper end position of the daylighting sheet 30 is determined according to, for example, the ridge CB shown in FIG. ⁇ CB is a portion protruding from the ceiling C to the outside (rear side) of the window WD.
  • ⁇ CB is provided, a part of the light L is blocked and a shadow S is generated. Therefore, the light L is not incident on the portion of the roll screen 10 that is located above the lower end of the shadow S. Therefore, by determining the upper end position of the daylighting sheet 30 in accordance with the lower end of the shadow S, the dimension H3 in the vertical direction Z of the daylighting sheet 30 can be set to the minimum necessary size.
  • a distance H4 in the vertical direction Z from the upper end of the screen 20 to the upper end of the daylighting sheet 30 is, for example, 200 mm.
  • a shadow may be generated by a portion of the ceiling C where the concave portion CA is provided. Therefore, the lower end of the shadow generated by a portion of the ceiling C where the concave portion CA is provided. It is preferable to determine the upper end position of the daylighting sheet 30 according to the above.
  • the thermal expansion coefficient of the screen 20 and the thermal expansion coefficient of the daylighting sheet 30 are different, the thermal deformation amount of the screen 20 and the thermal deformation amount of the daylighting sheet 30 when thermal expansion or thermal contraction is different. Therefore, for example, when the holding means has a fixing means for directly fixing the entire front surface of the daylighting sheet 30 to the screen 20, a stress is generated between the daylighting sheet 30 and the screen 20, and the fixing means At least a portion may be damaged. Therefore, the daylighting sheet 30 may fall from the screen 20. Note that the screen 20 and the daylighting sheet 30 may be heated and deformed due to incident light L, for example.
  • the daylighting sheet 30 has the non-fixed portion 30 a and there is a portion that is not directly fixed to the screen 20. Therefore, even if the amount of thermal deformation of the daylighting sheet 30 and the amount of thermal deformation of the screen 20 are different, the stress generated between the daylighting sheet 30 and the screen 20 can be released by the non-fixed portion 30a. Thereby, it can suppress that the holding means 80 (fixing means 70) breaks. Therefore, the daylighting sheet 30 can be prevented from falling from the screen 20.
  • the holding means 80 since the holding means 80 has the fixing means 70, the daylighting sheet 30 can be fixed to the screen 20 stably and firmly. Further, the daylighting sheet 30 can be easily held with respect to the screen 20.
  • the daylighting sheet 30 and the screen 20 may be warped when thermally deformed.
  • the posture of the daylighting sheet 30 changes, the optical characteristics of the daylighting sheet 30 may deteriorate.
  • the direction of the light L1 reflected by the daylighting sheet 30 may change, and the interior of the room R may not be suitably illuminated.
  • the non-fixed portion 30 a includes at least a part of the outer edge of the daylighting sheet 30. Therefore, when the daylighting sheet 30 is thermally deformed, the outer edge of the non-fixed portion 30 a can be moved relative to the screen 20. Thereby, it can suppress that the lighting sheet 30 and the screen 20 generate
  • the lower edge of the daylighting sheet 30 can be moved relative to the screen 20 in the vertical direction Z.
  • the upper end portion of the daylighting sheet 30 fixed by the fixing means 70 does not move relative to the screen 20, and the non-fixed part 30 a is relatively upward relative to the screen 20. Moving. Thereby, even if the daylighting sheet 30 is thermally deformed, it is possible to suppress warping of the daylighting sheet 30 and the screen 20.
  • the fixing means 70 fixes the upper end part of the lighting sheet 30 directly, and the part located below the fixing means 70 among the lighting sheets 30 is the non-fixing part 30a. is there. For this reason, the daylighting sheet 30 is suspended on the screen 20 with the upper end portion as a fulcrum. Thereby, it can suppress that the daylighting sheet 30 is extended by the dead weight of the daylighting sheet 30, and the daylighting sheet 30 bends.
  • the thermal expansion coefficient in the vertical direction Z of the base sheet 50 is larger than the thermal expansion coefficient in the width direction Y of the base sheet 50. Therefore, when the base material sheet 50 (lighting sheet 30) is thermally deformed, the amount of deformation of the base material sheet 50 (lighting sheet 30) is particularly large in the vertical direction Z. Therefore, as described above, by fixing the daylighting sheet 30 so that it can be moved relative to the screen 20 in the up-and-down direction Z, the deformation of the daylighting sheet 30 can be effectively escaped, and the holding means 80 is damaged. It can be suppressed more.
  • the daylighting sheet 30 is wound up by the winding mechanism 40 together with the screen 20.
  • the daylighting sheet 30 and the screen 20 that are arranged to overlap each other have different diameters when wound in a cylindrical shape by the winding core 41. Therefore, when the entire daylighting sheet 30 is directly fixed to the screen 20, stress is generated between the daylighting sheet 30 and the screen 20 due to a difference in diameter when wound. Thereby, at least a part of the means for fixing the daylighting sheet 30 to the screen 20 may be damaged. Further, the daylighting sheet 30 may be bent and it may be difficult to wind up the screen 20.
  • the stress generated between the daylighting sheet 30 and the screen 20 can be released by providing the non-fixed portion 30a. Therefore, it is possible to suppress the holding means 80 from being damaged when the screen 20 is wound on the roll screen 10.
  • the non-fixed portion 30a includes at least a part of the outer edge of the daylighting sheet 30, and when the daylighting sheet 30 is thermally deformed, it can be moved relative to the screen 20 to be wound around the winding core 41. At this time, the daylighting sheet 30 moves relative to the screen 20 according to the diameter of the daylighting sheet 30. Therefore, the daylighting sheet 30 can be prevented from being bent, and the screen 20 can be easily wound by the winding mechanism 40.
  • the effects of the present embodiment are particularly useful when the lighting device is a roll screen.
  • the vertical direction Z may be sufficient as the direction where a lighting part extends.
  • the plurality of daylighting units are arranged side by side in the width direction Y.
  • the daylighting unit reflects the incident light L1 to one side in the front oblique width direction.
  • the thermal expansion coefficient in the vertical direction Z of the base sheet may be smaller than the thermal expansion coefficient in the width direction Y orthogonal to the vertical direction Z of the base sheet. That is, the extending direction of the base sheet may be the width direction Y. Further, the gap DP may not be provided between the daylighting sheet 30 and the screen 20.
  • the fixing means 170 of the holding means 180 directly fixes only the central portion in the width direction Y to the screen 20 among the upper end portions of the daylighting sheet 130.
  • the non-fixed portion 130a of the daylighting sheet 130 includes a part of the daylighting sheet 130 that is positioned below the fixing unit 170 and a part of the daylighting sheet 130 that is positioned on both sides of the fixing unit 170 in the width direction Y. And including.
  • the non-fixed portion 130a includes a lower edge, an edge on both sides in the width direction, and a portion of the upper edge excluding a portion where the fixing means 170 is provided, including.
  • Other configurations of the daylighting sheet 130 and the roll screen 110 are the same as those of the daylighting sheet 30 and the roll screen 10 of the first embodiment.
  • the fixing means 170 can be used as a fulcrum to move in the vertical direction Z and the width direction Y relative to the screen 20 when the daylighting sheet 130 is thermally deformed. Therefore, it can suppress more that the holding means 180 (fixing means 170) is damaged.
  • the holding means 280 has three fixing means 270 as shown in FIG.
  • the three fixing means 270 directly fix the central portion in the width direction Y and the both end portions in the width direction Y of the upper end portion of the daylighting sheet 230 directly to the screen 20.
  • the non-fixed portion 230a of the daylighting sheet 230 is located between the portion of the daylighting sheet 230 located below the fixing means 270 and the fixing means 270 in the width direction Y of the daylighting sheet 230. And a portion.
  • the non-fixed portion 230a is a portion of the outer edge of the daylighting sheet 230 excluding a portion provided with three fixing means 270 among the lower edge, the edges on both sides in the width direction, and the upper edge. And including.
  • Other configurations of the daylighting sheet 230 and the roll screen 210 are the same as those of the daylighting sheet 30 and the roll screen 10 of the first embodiment.
  • the lighting sheet 230 can be fixed to the screen 20 more stably.
  • the holding unit 380 in the roll screen 310 of the present embodiment includes a fixing unit 70, an auxiliary sheet 371, and a fixing unit 372.
  • the auxiliary sheet 371 is disposed so as to overlap the surface of the daylighting sheet 30 opposite to the screen 20, that is, the rear side of the daylighting sheet 30 in this embodiment.
  • the auxiliary sheet 371 has an elongated rectangular shape that is long in the width direction Y.
  • the dimension in the vertical direction Z of the auxiliary sheet 371 is smaller than the dimension in the vertical direction Z of the daylighting sheet 30.
  • the dimension in the width direction Y of the auxiliary sheet 371 is larger than the dimension in the width direction Y of the daylighting sheet 30.
  • Both end portions in the width direction Y of the auxiliary sheet 371 extend so as to protrude outward in the width direction from both ends in the width direction of the daylighting sheet 30.
  • the auxiliary sheet 371 covers the lower end portion of the daylighting sheet 30.
  • the auxiliary sheet 371 is in contact with the rear surface of the daylighting sheet 30. Note that a gap may be provided between the auxiliary sheet 371 and the daylighting sheet 30.
  • the auxiliary sheet 371 is directly fixed to the surface of the screen 20. More specifically, both ends of the auxiliary sheet 371 in the width direction Y are directly fixed to the screen 20 by the fixing portions 372.
  • the fixing portion 372 sandwiches the daylighting sheet 30 in the width direction Y.
  • the fixing part 372 is not particularly limited as long as the auxiliary sheet 371 can be fixed to the screen 20.
  • the fixing part 372 can be selected in the same manner as the fixing unit 70 described above.
  • the fixing portion 372 is, for example, an adhesive tape.
  • the fixing portion 372 and the fixing means 70 may be the same fixing method or different fixing methods.
  • the auxiliary sheet 371 has translucency.
  • the material of the auxiliary sheet 371 is not particularly limited as long as it has translucency.
  • the auxiliary sheet 371 may be a cloth made of fibers or a resin sheet.
  • the material of the auxiliary sheet 371 and the material of the screen 20 may be the same or different.
  • Other configurations of the roll screen 310 are the same as the configurations of the roll screen 10 of the first embodiment.
  • the daylighting sheet 30 can be pressed from the rear side by the auxiliary sheet 371, the daylighting sheet 30 can be held more stably with respect to the screen 20. Further, the auxiliary sheet 371 can maintain a state in which the daylighting sheet 30 extends in a planar shape along the rear surface of the screen 20. Therefore, it can suppress that the lighting sheet 30 bends and the optical characteristic of the lighting sheet 30 falls. Further, since the auxiliary sheet 371 is directly fixed to the screen 20, the daylighting sheet 30 is not directly fixed to the screen 20. Therefore, depending on the auxiliary sheet 371, the relative movement of the daylighting sheet 30 with respect to the screen 20 is difficult to be inhibited. Thereby, it can suppress that the damage suppression effect of the holding means 380 mentioned above falls.
  • the position of the auxiliary sheet 371 in the vertical direction Z is not particularly limited as long as the auxiliary sheet 371 is disposed so as to overlap the daylighting sheet 30.
  • the auxiliary sheet 371 may be disposed so as to overlap the central portion of the daylighting sheet 30 in the vertical direction Z, or may be disposed so as to overlap the upper end portion of the daylighting sheet 30.
  • the holding means 480 includes a fixing means 70 and an auxiliary sheet 471 as shown in FIG.
  • the auxiliary sheet 471 has a rectangular shape that is long in the width direction Y.
  • the dimension in the vertical direction Z of the auxiliary sheet 471 is larger than the dimension in the vertical direction Z of the daylighting sheet 30.
  • the dimension in the width direction Y of the auxiliary sheet 471 is larger than the dimension in the width direction Y of the daylighting sheet 30.
  • the auxiliary sheet 471 covers the entire rear surface of the daylighting sheet 30. Both ends of the auxiliary sheet 471 in the width direction Y are directly fixed to the surface of the screen 20.
  • Other configurations of the auxiliary sheet 471 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment.
  • the other configuration of the roll screen 410 is the same as the configuration of the roll screen 10 of the first embodiment.
  • the auxiliary sheet 471 can hold the entire rear surface of the daylighting sheet 30, the daylighting sheet 30 can be more stably held on the screen 20. Further, the auxiliary sheet 471 can keep the entire daylighting sheet 30 flat along the rear surface of the screen 20.
  • the holding means 580 includes a fixing means 70 and a plurality of auxiliary sheets 571 as shown in FIG.
  • the auxiliary sheet 571 has an elongated rectangular shape that is long in the width direction Y.
  • three auxiliary sheets 571 are provided.
  • the three auxiliary sheets 571 are arranged side by side along the vertical direction Z at intervals.
  • the three auxiliary sheets 571 are arranged at equal intervals.
  • Other configurations of the auxiliary sheet 571 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment.
  • the other configuration of the roll screen 510 is the same as the configuration of the roll screen 10 of the first embodiment.
  • the daylighting sheet 30 can be more stably held on the screen 20. Further, the auxiliary sheet 571 can maintain the state in which the daylighting sheet 30 is extended in a planar shape along the rear surface of the screen 20.
  • the number of auxiliary sheets 571 may be two, or four or more. Further, the plurality of auxiliary sheets 571 may be arranged at different intervals.
  • the holding means 680 includes a fixing means 70, a plurality of auxiliary sheets 671, and a fixing portion 672, as shown in FIG.
  • the auxiliary sheet 671 has an elongated rectangular shape that is long in the vertical direction Z.
  • the dimension in the width direction Y of the auxiliary sheet 671 is smaller than the dimension in the width direction Y of the daylighting sheet 30.
  • the dimension in the vertical direction Z of the auxiliary sheet 671 is larger than the dimension in the vertical direction Z of the daylighting sheet 30. Both ends of the auxiliary sheet 671 in the up-down direction Z protrude and extend on both sides in the up-down direction Z from both ends of the daylighting sheet 30 in the up-down direction.
  • the auxiliary sheet 671 is directly fixed to the surface of the screen 20. More specifically, both ends of the auxiliary sheet 671 in the vertical direction Z are directly fixed to the screen 20 by the fixing portions 672.
  • the fixing portion 672 sandwiches the daylighting sheet 30 in the vertical direction Z.
  • Other configurations of the fixing portion 672 are the same as the configurations of the fixing portion 372 of the fourth embodiment.
  • two auxiliary sheets 671 are provided.
  • the two auxiliary sheets 671 cover both ends of the daylighting sheet 30 in the width direction Y, respectively.
  • Other configurations of the auxiliary sheet 671 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment.
  • Other configurations of the roll screen 610 are the same as the configurations of the roll screen 10 of the first embodiment.
  • the fixing portion 672 of the auxiliary sheet 671 is disposed with the daylighting sheet 30 sandwiched in the vertical direction Z, for example, even if the fixing means 70 is damaged, the daylighting is performed by the auxiliary sheet 671. It can control that sheet 30 falls.
  • the position in the width direction Y of the two auxiliary sheets 671 is not particularly limited as long as the auxiliary sheet 671 is disposed so as to overlap the daylighting sheet 30. Further, only one of the two auxiliary sheets 671 may be provided. Further, three or more auxiliary sheets 671 may be provided. In that case, the plurality of auxiliary sheets 671 may be arranged at equal intervals in the width direction Y, or may be arranged at different intervals.
  • the holding means 780 includes a fixing means 70, a pair of auxiliary sheets 771, and a fixing portion 772, as shown in FIG.
  • the pair of auxiliary sheets 771 has an elongated rectangular shape that is orthogonal to the thickness direction X and is long in a direction inclined with respect to the vertical direction Z.
  • the auxiliary sheet 771 extends in a direction positioned on the lower side toward the inner side in the width direction.
  • the pair of auxiliary sheets 771 are disposed at both ends of the daylighting sheet 30 in the width direction Y, and press the lower corners of the daylighting sheet 30.
  • the pair of auxiliary sheets 771 are arranged symmetrically with respect to an imaginary line that passes through the center in the width direction Y of the daylighting sheet 30 and extends in the vertical direction Z.
  • the distance in the width direction Y between the pair of auxiliary sheets 771 decreases from the upper side toward the lower side.
  • Both end portions of the auxiliary sheet 771 in the longitudinal direction are directly fixed to the screen 20 by fixing portions 772.
  • a fixing portion 772 for fixing the lower end portion of the auxiliary sheet 771 is disposed on the lower side of the daylighting sheet 30.
  • the fixing portion 772 that fixes the upper end portion of the auxiliary sheet 771 is disposed on the outer side in the width direction of the daylighting sheet 30.
  • Other configurations of the fixing unit 772 are the same as the configuration of the fixing unit 372 of the fourth embodiment.
  • Other configurations of the auxiliary sheet 771 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment.
  • the other configuration of the roll screen 710 is the same as the configuration of the roll screen 10 of the first embodiment.
  • the fixing portion 772 of the auxiliary sheet 771 is disposed on the lower side of the daylighting sheet 30 and on the outer side in the width direction of the daylighting sheet 30. Therefore, for example, even if the fixing means 70 is damaged, the daylighting sheet 30 can be prevented from falling by the auxiliary sheet 771. Moreover, it can suppress that the position of the daylighting sheet 30 shifts in the width direction Y.
  • the holding means 880 has a storage portion 890 as shown in FIG. Unlike the embodiments described above, the holding unit 880 of this embodiment does not have a fixing unit that directly fixes a part of the daylighting sheet 830 to the screen 20.
  • the storage unit 890 has a bag shape provided on the screen 20.
  • the storage unit 890 has translucency.
  • the storage unit 890 includes a storage sheet 891, a fixing unit 872, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
  • the storage sheet 891 has a rectangular shape that is long in the width direction Y.
  • the dimension in the width direction Y of the storage sheet 891 is larger than the dimension in the width direction Y of the daylighting sheet 830.
  • the dimension in the vertical direction Z of the storage sheet 891 is larger than the dimension in the vertical direction Z of the daylighting sheet 830.
  • the storage sheet 891 is disposed on the rear side of the daylighting sheet 830 and covers the entire rear surface of the daylighting sheet 830. The outer edge of the storage sheet 891 is directly fixed to the screen 20 by a fixing portion 872.
  • the storage sheet 891 has translucency.
  • the material of the storage sheet 891 is not particularly limited as long as it has translucency.
  • the storage sheet 891 may be a cloth made of fibers or a resin sheet.
  • the material of the storage sheet 891 and the material of the screen 20 may be the same or different.
  • the fixing portion 872 has a rectangular ring shape.
  • the fixing portion 872 surrounds the daylighting sheet 830 when viewed along the thickness direction X.
  • the fixing portion 872 is not particularly limited as long as the storage sheet 891 can be fixed to the screen 20.
  • the fixing portion 872 can be selected similarly to the fixing means 70 described above.
  • the fixing portion 872 is, for example, an adhesive tape.
  • the fixing portion 872 and the fixing means 70 may be the same fixing method or different fixing methods.
  • the storage portion 890 is configured in a bag shape by the storage sheet 891 being fixed to the screen 20, so that the storage sheet 891 and a part of the screen 20 overlapping the storage sheet 891 in the thickness direction X are formed. Yes.
  • the storage unit 890 has a storage space 890 a disposed between the storage sheet 891 and the screen 20 in the thickness direction X.
  • the storage space 890a is a closed space.
  • the daylighting sheet 830 is stored in the storage unit 890. More specifically, the daylighting sheet 830 is disposed in the storage space 890 a and is held on the screen 20. In the present embodiment, since the holding means 880 does not have a fixing means for directly fixing a part of the daylighting sheet 830 to the screen 20, in this embodiment, the entire daylighting sheet 830 is the non-fixed portion 830a. In FIG. 13, the entire daylighting sheet 830 is illustrated so as not to be in contact with the storage unit 890, but a part of the daylighting sheet 830 is held in contact with the storage unit 890. The front surface of the daylighting sheet 830 may be in contact with the rear surface of the screen 20. The daylighting sheet 830 is movable in the storage space 890a.
  • the daylighting sheet 830 includes a base sheet 50, an optical function layer 60, and an optical sheet 831.
  • the optical sheet 831 is disposed so as to overlap the base sheet 50. More specifically, the optical sheet 831 is fixed to the surface opposite to the optical functional layer 60 of the base sheet 50, that is, the front surface.
  • the shape of the optical sheet 831 is the same as the shape of the base material sheet 50, for example.
  • the optical sheet 831 has optical characteristics different from those of the optical functional layer 60.
  • the optical sheet 831 functions as a light diffusing portion having light diffusibility.
  • the light L ⁇ b> 1 emitted from the daylighting unit 61 is incident on the optical sheet 831.
  • the light L1 incident on the optical sheet 831 is diffused and transmitted through the screen 20.
  • daylighting sheet 830 are the same as those of the daylighting sheet 30 of the first embodiment.
  • the other configuration of the roll screen 810 is the same as the configuration of the roll screen 10 of the first embodiment.
  • the daylighting sheet 830 can be held on the screen 20 by the storage portion 890 while the entire daylighting sheet 830 is the non-fixed portion 830a. Therefore, even if the daylighting sheet 830 is thermally deformed, stress is not generated between the daylighting sheet 830 and the screen 20, and the holding unit 880 can be further prevented from being damaged. Moreover, it can suppress more that the lighting sheet
  • the daylighting sheet 830 can be prevented from coming out of the storage space 890a.
  • the daylighting sheet 830 includes the optical sheet 831 having optical characteristics different from those of the optical functional layer 60. Therefore, a plurality of optical characteristics can be imparted to the daylighting sheet 830.
  • the optical sheet 831 functions as a light diffusing unit, the light emitted from the daylighting sheet 830 can be diffused. Thereby, the light L1 can be irradiated to a wider range of the ceiling surface, and the interior of the room R can be brightened.
  • the light L1 can be diffused, the person M can be prevented from feeling dazzling even when the amount of the light L1 incident from the window WD is large.
  • optical characteristics of the optical sheet 831 are not limited to light diffusibility, and may have other optical characteristics.
  • the optical sheet 831 may have a function of blocking ultraviolet rays or a function of blocking infrared rays, for example.
  • a design sheet may be provided instead of the optical sheet 831.
  • the design sheet is a stripe pattern extending in the width direction Y, the wrinkles can be made inconspicuous even when wrinkles occur on the screen 20.
  • the holding means 980 includes a storage portion 990 as shown in FIG.
  • the storage unit 990 includes a storage sheet 891, a fixing unit 972, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
  • the fixing portion 972 directly fixes the lower edge and the edges on both sides in the width direction among the outer edges of the storage sheet 891 directly to the screen 20.
  • the fixing part 972 is different from the fixing part 872 of the ninth embodiment in that the upper edge of the storage sheet 891 is not fixed.
  • Other configurations of the fixing portion 972 are the same as the configurations of the fixing portion 872 of the ninth embodiment.
  • the storage space 990a opens upward.
  • the other configuration of the roll screen 910 is the same as the configuration of the roll screen 810 of the ninth embodiment.
  • the daylighting sheet 830 can be freely put in and out of the storage portion 990 through the opening of the storage space 990a. Thereby, installation and replacement of the daylighting sheet 830 can be facilitated.
  • the holding means 1080 has a storage portion 1090 as shown in FIG.
  • the storage unit 1090 includes a storage sheet 891, two fixing units 1072, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
  • the two fixing portions 1072 directly fix the upper edge of the storage sheet 891 and the lower edge of the storage sheet 891 to the screen 20.
  • the two fixing portions 1072 are different from the fixing portion 872 of the ninth embodiment in that the edges on both sides in the width direction of the storage sheet 891 are not fixed.
  • Other configurations of the fixing unit 1072 are the same as the configurations of the fixing unit 872 of the ninth embodiment.
  • the storage space 1090a is open on both sides in the width direction.
  • the other configuration of the roll screen 1010 is the same as the configuration of the roll screen 810 of the ninth embodiment.
  • the daylighting sheet 830 can be freely put in and out of the storage portion 1090 through any of the openings on both sides in the width direction of the storage space 1090a. Is possible. Thereby, installation and replacement of the daylighting sheet 830 can be made easier.
  • the holding means 1180 includes a storage portion 1190 as shown in FIG.
  • the storage unit 1190 includes a storage sheet 891, a plurality of fixing units 1172, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
  • the plurality of fixing portions 1172 directly fix a part of the upper edge of the storage sheet 891 and a part of the lower edge of the storage sheet 891 directly to the screen 20.
  • a total of six fixing portions 1172 are provided, including three fixing portions 1172 that fix the upper edge of the storage sheet 891 and three fixing portions 1172 that fix the lower edge of the storage sheet 891. .
  • the three fixing portions 1172 that fix the upper edge of the storage sheet 891 fix the central portion in the width direction Y and both end portions in the width direction Y of the upper edge of the storage sheet 891.
  • the three fixing portions 1172 that fix the lower edge of the storage sheet 891 fix the central portion in the width direction Y and both end portions in the width direction Y of the lower edge of the storage sheet 891.
  • Other configurations of the fixing portion 1172 are the same as the configurations of the fixing portion 1072 of the eleventh embodiment.
  • the storage space 1190a is open on both sides in the width direction and both sides in the vertical direction.
  • Other configurations of the roll screen 1110 are the same as those of the roll screen 810 of the ninth embodiment.
  • the area of the fixing portion 1172 for fixing the storage sheet 891 to the screen 20 can be reduced, it is easy to fix the storage sheet 891 to the screen 20.
  • the holding means 1280 includes a holding sheet 1292 and a fixing portion 1272 as shown in FIG.
  • the holding sheet 1292 is disposed so as to overlap the surface of the daylighting sheet 830 opposite to the screen 20, that is, the rear side of the daylighting sheet 830 in this embodiment.
  • the holding sheet 1292 has a rectangular shape that is long in the vertical direction Z.
  • the dimension in the width direction Y of the holding sheet 1292 is smaller than the dimension in the width direction Y of the daylighting sheet 830.
  • the dimension of the holding sheet 1292 in the vertical direction Z is larger than the dimension of the lighting sheet 830 in the vertical direction Z.
  • Both end portions in the up-down direction Z of the holding sheet 1292 protrude and extend on both sides in the up-down direction Z from both ends in the width direction of the daylighting sheet 830.
  • a plurality of holding sheets 1292 are provided.
  • four holding sheets 1292 are provided.
  • the four holding sheets 1292 are arranged at equal intervals along the width direction Y at intervals.
  • the holding sheet 1292 is in contact with the rear surface of the daylighting sheet 830, for example. Note that a gap may be provided between the holding sheet 1292 and the daylighting sheet 830.
  • the daylighting sheet 830 is held by a plurality of holding sheets 1292.
  • the holding sheet 1292 is directly fixed to the surface of the screen 20. More specifically, the holding sheet 1292 is directly fixed to the screen 20 by fixing portions 1272 at both ends in the vertical direction Z.
  • the fixing portion 1272 sandwiches the daylighting sheet 30 in the vertical direction Z.
  • the fixing unit 1272 is not particularly limited as long as the holding sheet 1292 can be fixed to the screen 20.
  • the fixing unit 1272 can be selected in the same manner as the fixing unit 70 described above.
  • the fixing portion 1272 is, for example, an adhesive tape.
  • the fixing part 1272 and the fixing means 70 may be the same fixing method or different fixing methods.
  • the holding sheet 1292 has translucency.
  • the material of the holding sheet 1292 is not particularly limited as long as it has translucency.
  • the holding sheet 1292 may be a cloth made of fibers or a resin sheet.
  • the material of the holding sheet 1292 and the material of the screen 20 may be the same or different.
  • the other configuration of the roll screen 1210 is the same as the configuration of the roll screen 810 of the ninth embodiment.
  • the daylighting sheet 830 is held by the holding sheet 1292, so that the daylighting sheet 830 is the screen as the non-fixed portion 830 a as in the ninth to twelfth embodiments. 20 can be retained. Therefore, even if the daylighting sheet 830 is thermally deformed, no stress is generated between the daylighting sheet 830 and the screen 20, and the damage of the holding unit 1280 can be further suppressed. Moreover, it can suppress more that the lighting sheet
  • the sheet material (holding sheet 1292) used for configuring the holding means 1280 as compared with the case where the bag-shaped storage portion is formed as in the ninth to twelfth embodiments.
  • the amount of can be reduced.
  • the holding unit 1380 includes a pair of upper holding sheets 1392, a pair of lower holding sheets 1393, and a fixing portion 1372 as shown in FIG.
  • the upper holding sheet 1392 and the lower holding sheet 1393 have an elongated rectangular shape that is orthogonal to the thickness direction X and is long in a direction inclined with respect to the vertical direction Z.
  • the pair of upper holding sheets 1392 hold the upper corners of the daylighting sheet 830.
  • the pair of upper holding sheets 1392 extends in a direction positioned on the upper side as going inward in the width direction.
  • the pair of upper holding sheets 1392 are arranged symmetrically with respect to an imaginary line that extends in the vertical direction Z through the center of the daylighting sheet 830 in the width direction Y.
  • the pair of lower holding sheets 1393 hold the lower corners of the daylighting sheet 830. That is, in the present embodiment, the lighting sheet 830 has four corners held by the pair of upper holding sheets 1392 and the pair of lower holding sheets 1393.
  • the pair of lower holding sheets 1393 extend in a direction positioned on the lower side as going inward in the width direction.
  • the pair of lower holding sheets 1393 are arranged symmetrically with respect to an imaginary line that passes through the center in the width direction Y of the daylighting sheet 830 and extends in the vertical direction Z.
  • Both end portions of the upper holding sheet 1392 in the longitudinal direction are directly fixed to the screen 20 by fixing portions 1372.
  • a fixing portion 1372 that fixes an upper end portion of the upper holding sheet 1392 is disposed on the upper side of the daylighting sheet 830.
  • a fixing portion 1372 for fixing the lower end portion of the upper holding sheet 1392 is disposed on the outer side in the width direction of the daylighting sheet 830.
  • Both ends in the longitudinal direction of the lower holding sheet 1393 are directly fixed to the screen 20 by fixing portions 1372.
  • the fixing portion 1372 that fixes the upper end portion of the lower holding sheet 1393 is disposed on the outer side in the width direction of the daylighting sheet 830.
  • a fixing portion 1372 that fixes the lower end portion of the lower holding sheet 1393 is disposed below the daylighting sheet 830.
  • Other configurations of the fixing unit 1372 are the same as the configuration of the fixing unit 1272 of the thirteenth embodiment.
  • Other configurations of the upper holding sheet 1392 and the lower holding sheet 1393 are the same as the configuration of the holding sheet 1292 of the thirteenth embodiment.
  • Other configurations of the roll screen 1310 are the same as the configurations of the roll screen 1210 of the thirteenth embodiment.
  • the sheet materials (upper holding sheet 1392 and lower holding sheet 1393 used for configuring the holding means 1380 are compared with the case of forming a bag-shaped storage portion. ) Can be reduced. Moreover, since the fixing parts 1372 are provided on both sides in the vertical direction and both sides in the width direction of the daylighting sheet 830, the daylighting sheet 830 can be prevented from moving in the width direction Y and the vertical direction Z and coming off from the screen 20.
  • the holding means 1480 has a storage portion 1490 as shown in FIG.
  • the shape of the storage unit 1490 is the same as the shape of the storage unit 890 of the ninth embodiment, for example.
  • the storage sheet (covering portion) 1491 of the storage unit 1490 is a cloth made of fibers.
  • the storage sheet 1491 is configured by knitting a plurality of vertical fibers 1491a and a plurality of horizontal fibers 1491b in a lattice shape.
  • the storage sheet 1491 of the present embodiment corresponds to a covering portion that covers the daylighting sheet.
  • the plurality of longitudinal fibers 1491a are columnar fibers extending in the up-down direction Z, and are arranged at a pitch P1 along the width direction Y.
  • the pitch P1 is the distance between the centers in the width direction Y of the longitudinal fibers 1491a in the longitudinal fibers 1491a adjacent to each other in the width direction Y.
  • the plurality of lateral fibers 1491b are columnar fibers extending in the width direction Y, and are arranged at a pitch P2 along the vertical direction Z.
  • the pitch P2 is a distance between the centers in the vertical direction Z of the horizontal fibers 1491b in the horizontal fibers 1491b adjacent in the vertical direction Z.
  • the diameter D1 of the vertical fibers 1491a and the diameter D2 of the horizontal fibers 1491b are substantially the same.
  • the pitch P1 of the vertical fibers 1491a is smaller than the pitch P2 of the horizontal fibers 1491b.
  • Each fiber diffuses the light applied to each fiber in a direction perpendicular to the direction in which each fiber extends. That is, the longitudinal fibers 1491a diffuse light in the width direction Y orthogonal to the up-down direction Z, and the lateral fibers 1491b diffuse light in the up-down direction Z orthogonal to the width direction Y.
  • the pitch P1 of the vertical fibers 1491a is smaller than the pitch P2 of the horizontal fibers 1491b
  • the density of the vertical fibers 1491a per unit area is larger than the density of the horizontal fibers 1491b per unit area.
  • the degree of diffusion in the width direction Y by the vertical fibers 1491a is greater than the degree of diffusion in the vertical direction Z by the horizontal fibers 1491b.
  • the light L1 incident on the storage sheet 1491 is diffused more in the width direction Y than in the vertical direction Z. That is, in the present embodiment, the storage sheet 1491 has an anisotropic diffusion function of diffusing the incident light L1.
  • the daylighting sheet of the present embodiment is different from the daylighting sheet 830 of the ninth embodiment in that the optical sheet 831 is not provided.
  • Other configurations of the daylighting sheet of the present embodiment are the same as those of the daylighting sheet 830 of the ninth embodiment.
  • the other configuration of the storage unit 1490 is the same as the configuration of the storage unit 890 of the ninth embodiment.
  • the other configuration of the roll screen 1410 is the same as the configuration of the roll screen 810 of the ninth embodiment.
  • the storage sheet 1491 since the storage sheet 1491 has an anisotropic diffusion function, the light L1 incident on the storage sheet 1491 can be greatly diffused in a predetermined direction, that is, the width direction Y in this embodiment. Thereby, the light L ⁇ b> 1 greatly diffused in the width direction Y is incident on the optical function layer 60. Therefore, the light L1 emitted obliquely upward on the front side by the optical function layer 60 can be largely diffused in the width direction Y. Thereby, the inside of the room R can be illuminated more brightly. In addition, since the light L1 can be diffused, the person M can be prevented from feeling dazzling even when the amount of the light L1 incident from the window WD is large.
  • the vertical fiber 1491a and the horizontal fiber 1491b can be configured using the same fiber.
  • the storage sheet 1491 functions as a light diffusing unit, the light L1 can be diffused without providing an optical sheet having light diffusibility in the daylighting sheet. Thereby, the structure of a daylighting sheet can be simplified.
  • the holding means 1580 has a storage portion 1590 as shown in FIG.
  • the shape of the storage unit 1590 is the same as the shape of the storage unit 890 of the ninth embodiment, for example.
  • the storage sheet (covering portion) 1591 of the storage unit 1590 is a cloth made of fibers.
  • the storage sheet 1591 is configured by knitting a plurality of vertical fibers 1591a and a plurality of horizontal fibers 1591b in a lattice shape.
  • the storage sheet 1591 of this embodiment corresponds to a covering portion that covers the daylighting sheet.
  • the pitch P3 of the vertical fibers 1591a and the pitch P4 of the horizontal fibers 1591b are substantially the same.
  • the diameter D3 of the vertical fibers 1591a is larger than the diameter D4 of the horizontal fibers 1591b. Therefore, the density of the longitudinal fibers 1591a per unit area is larger than the density of the transverse fibers 1591b per unit area. Therefore, similarly to the storage sheet 1491 of the fifteenth embodiment, the storage sheet 1591 has an anisotropic diffusion function that diffuses the light L1 incident on the storage sheet 1591 more in the width direction Y than in the vertical direction Z.
  • Other configurations of the storage sheet 1591 are the same as the configuration of the storage sheet 1491 of the fifteenth embodiment.
  • the other configuration of the storage unit 1590 is the same as the configuration of the storage unit 890 of the ninth embodiment.
  • the other configuration of the roll screen 1510 is the same as the configuration of the roll screen 810 of the ninth embodiment.
  • the storage sheet 1591 can be manufactured by arranging the fibers at the same pitch. Thereby, manufacture of the storage sheet 1591 can be facilitated.
  • a part of the screen 20 constituting the storage portion may be a covering portion having an anisotropic diffusion function.
  • the screen 20 is a cloth composed of vertical fibers and horizontal fibers.
  • the covering part which has an anisotropic diffusion function may be sufficient as both a part of screen 20 which comprises an accommodating part, and an accommodation sheet
  • the anisotropic diffusion function may be a function of diffusing light in the vertical direction Z more than the width direction Y.
  • a plurality of daylighting sheets 1630 are provided in a plane parallel to the plane of the screen 20 as shown in FIG.
  • the plurality of daylighting sheets 1630 are disposed on the rear surface of the screen 20.
  • four daylighting sheets 1630 are provided.
  • the daylighting sheet 1630 has a square shape.
  • the four daylighting sheets 1630 are arranged in a matrix of 2 rows and 2 columns along the vertical direction Z and the width direction Y.
  • the daylighting sheet 1630 is held on the screen 20 by holding means (not shown). As the holding means, any of the holding means in the first to sixteenth embodiments described above may be used. Other configurations of the daylighting sheet 1630 are the same as those of the daylighting sheet 30 of the first embodiment, for example. Other configurations of the roll screen 1610 are the same as the configurations of the roll screen 10 of the first embodiment.
  • the area on the screen 20 where the daylighting sheets 1630 are arranged can be enlarged. Therefore, even if the width of the original sheet of the daylighting sheet 1630 is small, the arrangement area of the daylighting sheet 1630 can be increased.
  • a plurality of daylighting sheets 1730 are provided in a plane parallel to the plane of the screen 20 as shown in FIG.
  • the plurality of daylighting sheets 1730 are disposed on the rear surface of the screen 20.
  • three daylighting sheets 1730 are provided: a first daylighting sheet 1730A, a second daylighting sheet 1730B, and a third daylighting sheet 1730C.
  • the daylighting sheet 1730 has a rectangular shape that is long in the width direction Y.
  • the first daylighting sheet 1730A, the second daylighting sheet 1730B, and the third daylighting sheet 1730C are arranged at equal intervals in this order from the upper side to the lower side along the vertical direction Z.
  • the plurality of daylighting sheets 1730 have different optical characteristics.
  • “differing optical characteristics” includes different types of optical characteristics and different degrees of optical characteristics of the same type.
  • each daylighting sheet 1730 has the same optical characteristics as the daylighting sheet 30 of the first embodiment. That is, as shown in FIG. 23, each daylighting sheet 1730 reflects the incident light L1 obliquely upward on the front side.
  • the daylighting sheets 1730 have different optical characteristics.
  • the first daylighting sheet 1730A, the second daylighting sheet 1730B, and the third daylighting sheet 1730C have different angles of the reflected light L1.
  • the inclination angle ⁇ C with respect to the horizontal direction of L1C increases in this order. That is, the angle which reflects light L1 becomes large, so that the daylighting sheet 1730 arrange
  • Other configurations of the roll screen 1710 are the same as the configurations of the roll screen 1610 of the sixteenth embodiment.
  • the plurality of daylighting sheets 1730 have different optical characteristics, a plurality of optical characteristics can be imparted to the roll screen 1710. If the optical characteristics of the daylighting sheet 1730 are such that the light L1 is reflected obliquely upward on the front side as in the present embodiment, and the angles reflected by the daylighting sheets 1730 are different, the daylighting sheet 1730 arranged on the lower side By increasing the angle at which the light L1 is reflected, it is possible to further suppress the light L1 reflected by the daylighting sheet 1730 from directly entering the eyes of the person M.
  • the screen 1820 includes a transmission part 1821 and a light shielding part 1822 as shown in FIG.
  • the transmission part 1821 is an upper part of the screen 1820.
  • the transmission part 1821 has translucency.
  • the material of the transmission part 1821 can be selected similarly to the screen 20 of the first embodiment.
  • the daylighting sheet 30 is held in the transmission part 1821.
  • the light shielding unit 1822 is a lower part of the screen 1820.
  • the light shielding unit 1822 has a light shielding property.
  • the material of the light shielding portion 1822 is not particularly limited as long as it has light shielding properties.
  • the light shielding unit 1822 is, for example, a cloth made of fibers.
  • the screen 1820 since the screen 1820 includes the light transmitting portion 1821 having the light transmitting property and the light shielding portion 1822 having the light blocking property, the light L is suitably placed in the room R according to the use environment of the roll screen 1810 or the like. Can be imported.
  • the arrangement of the transmission part 1821 and the light shielding part 1822 can be changed as appropriate according to the usage environment of the roll screen 1810 and the like.
  • the screen 1920 has a light shielding property as shown in FIG.
  • the screen 1920 has a hole 1923 that penetrates the screen 1920 in the thickness direction X.
  • a plurality of hole portions 1923 are provided along the width direction Y at regular intervals.
  • the hole 1923 has a rectangular shape that is long in the vertical direction Z.
  • the hole 1923 is disposed at a position overlapping the daylighting sheet 30 in the thickness direction X.
  • the light L 1 that has entered the daylighting sheet 30 enters the room R through the hole 1923.
  • the position where the light L is transmitted in the screen 1920 can be arbitrarily selected by providing the hole 1923 with the screen 1920 as a light shielding property. That is, by providing the hole 1923 at a position where the light L is to be transmitted on the screen 1920, the light L can be selectively incident on the room R from the position of the hole 1923.
  • the hole 1923 at a position overlapping the daylighting sheet 30 most of the light L incident into the room R can be the light L1 that passes through the daylighting sheet 30.
  • “having translucency” in this specification includes that a hole through which light can pass is provided in an object.
  • the roll screen 2010 of the present embodiment is arranged so as to cover the window 2002 in the room 2003.
  • the screen of the roll screen 2010 includes a transmission part 2009 and a light shielding part 2008, like the screen 1820 of the roll screen 1810 of the nineteenth embodiment.
  • the transmission part 2009 is an upper part of the screen in the roll screen 2010.
  • the transmission part 2009 is the same as the transmission part 1821 of the nineteenth embodiment.
  • the transmissive part 2009 holds a daylighting sheet.
  • the light shielding unit 2008 is a lower part of the screen in the roll screen 2010.
  • the light shielding portion 2008 is the same as the light shielding portion 1822 of the nineteenth embodiment.
  • the ceiling material constituting the ceiling 2003a of the room 2003 into which sunlight (external light) is introduced has high light reflectivity.
  • a light-reflective ceiling material 2004 is installed on a ceiling 2003a of a room 2003 as a light-reflective ceiling material.
  • the light-reflective ceiling material 2004 facilitates the introduction of sunlight incident on the room 2003 toward the back of the room 2003.
  • the light-reflective ceiling material 2004 is installed on the ceiling 2003a near the window. Specifically, it is installed in a predetermined area E (an area about 3 m from the window 2002) of the ceiling 2003a.
  • the light-reflective ceiling material 2004 efficiently transmits sunlight introduced into the room 2003 through the window 2002 in which the roll screen 2010 is installed to the back side of the room 2003 (the front side in FIG. 26). Lead. Sunlight introduced from the roll screen 2010 toward the ceiling 2003a in the room 2003 is reflected by the light-reflective ceiling material 2004, and changes its direction to the desk top surface 2005a of the desk 2005 placed in the back of the room 2003. Illuminate. Thereby, the desk surface 2005a can be brightened.
  • the light reflective ceiling material 2004 may have diffuse reflectivity or may have specular reflectivity.
  • the light-reflective ceiling material 2004 has both the effect of brightening the desk upper surface 2005a of the desk 2005 placed in the back of the room 2003 and the effect of suppressing glare light that is uncomfortable for people in the room 2003. It is preferable to have a combination of diffuse reflectivity and specular reflectivity.
  • the amount of light in the vicinity of the window 2002 is often sufficient. Therefore, by using the roll screen 2010 and the light-reflective ceiling material 2004 in combination, the light incident on the ceiling (region E) near the window 2002 by the roll screen 2010 is reduced in the interior of the room 2003 where the amount of light is small compared to the window. Can be sorted to the side.
  • the light-reflective ceiling material 2004 may be formed by embossing a metal plate of aluminum or the like with irregularities having a period of about several tens of ⁇ m, or by depositing a metal thin film of aluminum or the like on the surface of a resin substrate on which similar irregularities are formed. Can be produced.
  • the unevenness formed by embossing may be formed as a curved surface with a period greater than several tens of ⁇ m.
  • the light distribution characteristics of light and the light distribution in the room 2003 can be controlled.
  • embossing is performed in a stripe shape extending in the interior side of the room 2003 (extending in the thickness direction X)
  • the light reflected by the light-reflective ceiling material 2004 is reflected in the left-right direction of the window 2002 (unevenness). It extends in the direction intersecting the longitudinal direction, ie, the width direction Y in FIG.
  • the light is reflected in the horizontal direction (width direction Y) by the light-reflective ceiling material 2004 and the back of the room 2003 is used. It can be reflected toward the side (front side).
  • the roll screen 2010 is used as a part of the lighting system 2000 in the room 2003.
  • the illumination system 2000 includes, for example, a room including a roll screen 2010, a plurality of indoor illumination devices 2007, a control system for the roll screen 2010 and the indoor illumination device 2007, and a light reflective ceiling material 2004 installed on the ceiling 2003a. It is comprised from the structural member of the whole 2003.
  • the plurality of indoor lighting devices 2007 are arranged in a lattice shape along the width direction Y and the thickness direction X on the ceiling 2003a of the room 2003.
  • the plurality of indoor lighting devices 2007 are respectively 1 in the width direction Y and the thickness direction X of the ceiling 2003a. It is arranged in a grid pattern with an interval P5 of .8 m.
  • 50 indoor lighting devices 2007 are arranged in 10 rows (width direction Y) ⁇ 5 columns (thickness direction X). Each row of the indoor lighting device 2007 is set in the order of S1, S2, S3, S4, and S5 in order from the side closer to the window 2002.
  • the indoor lighting device 2007 includes an indoor lighting fixture 2007a, a brightness detection unit 2007b, and a control unit 2007c.
  • the brightness detection unit 2007b and the control unit 2007c are integrated with, for example, the indoor lighting fixture 2007a.
  • the indoor lighting fixture 2007a emits light downward from the ceiling 2003a to illuminate the interior of the room 2003.
  • the indoor lighting fixture 2007a has, for example, an LED lamp.
  • 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.
  • the brightness detection unit 2007b detects the illuminance of the desk surface 2005a of the desk 2005 placed in the room 2003, for example.
  • the indoor lighting fixture 2007a detects the illuminance of the desk surface of the desk 2005 disposed below the indoor lighting device 2007 provided with the indoor lighting fixture 2007a.
  • the illuminance detected by the brightness detection unit 2007b is output to the control unit 2007c.
  • the control unit 2007c controls the indoor lighting fixture 2007a to adjust the output of light emitted from the LED lamp of the indoor lighting fixture 2007a.
  • the control unit 2007c adjusts the light output of the indoor lighting fixture 2007a by feedback control based on the illuminance input from the brightness detection unit 2007b.
  • the control unit 2007c performs feedback control so that the illuminance of the desk surface 2005a detected by the brightness detection unit 2007b becomes a constant target illuminance L0 (for example, average illuminance: 750 lx).
  • Each control unit 2007c provided in each of the plurality of indoor lighting devices 2007 is connected to each other.
  • the indoor lighting device 2007 may include a plurality of indoor lighting fixtures 2007a and a plurality of brightness detection units 2007b. In this case, for example, one brightness detection unit 2007b is provided for each indoor lighting device 2007a.
  • FIG. 28 shows the relationship between the desk surface illuminance [lx] due to the light (sunlight) collected in the room 2003 via the roll screen 2010 and the desk top illuminance [lx] due to the light emitted from the room lighting device 2007. It is a graph which shows an example. In FIG. 28, the vertical axis represents desk surface illuminance [lx], and the horizontal axis represents distance [m] from the window 2002. Moreover, the broken line in a figure shows the target illumination intensity L0 of desk surface illumination intensity.
  • ⁇ indicates the illuminance on the desk surface by the light (sunlight) collected in the room 2003 through the roll screen 2010.
  • ⁇ in the figure indicates the illuminance on the desk surface due to the light emitted from the indoor lighting device 2007.
  • ⁇ indicates the total desk surface illuminance of the desk top illuminance by the light (sunlight) collected in the room 2003 through the roll screen 2010 and the desk top illuminance by the light emitted from the room lighting device 2007.
  • the desk surface illuminance caused by the light collected by the roll screen 2010 is larger in the vicinity of the window 2002 and decreases as the distance from the window 2002 increases.
  • an illuminance distribution is generated along the depth direction (thickness direction X) of the room 2003 due to natural daylighting from the window 2002 in the daytime.
  • the desk surface illuminance may be smaller than the target illuminance L0 on the back side of the room 2003 as shown in FIG.
  • the indoor lighting device 2007 detects the desk surface illuminance of the desk 2005 below each indoor lighting device 2007 by the brightness detection unit 2007b, and the desk illuminance is set to the target illuminance L0 that is constant.
  • the light is controlled so as to be turned on.
  • the desk surface illuminance by sunlight collected by the roll screen 2010 decreases from the vicinity of the window 2002 toward the back of the room 2003. Therefore, the light output of the room lighting device 2007 becomes larger as the room lighting device 2007 arranged on the back side of the room 2003.
  • the desk surface illuminance by sunlight collected by the roll screen 2010 is equal to or higher than the target illuminance L0. Therefore, the indoor lighting devices 2007 in the S1 row and the S2 row are hardly turned on or turned off.
  • the desk surface illuminance by sunlight collected by the roll screen 2010 is smaller than the target illuminance L0. Therefore, the indoor lighting devices 2007 in the S3, S4, and S5 rows are lit with such a light output that compensates for the difference between the desk surface illuminance due to sunlight collected by the roll screen 2010 and the target illuminance L0.
  • the light output of the S3 row indoor lighting device 2007, the light output of the S4 row indoor lighting device 2007, and the light output of the S5 row indoor lighting device 2007 increase in this order.
  • the desk surface 2005a of the room 2003 is illuminated by both the sunlight collected by the roll screen 2010 and the light emitted from the interior lighting device 2007, which is sufficient for working throughout the room 2003.
  • 750 lx (“JIS")
  • JIS The recommended maintenance illuminance in the office of “Z9110 General Lighting” can be realized.
  • the roll screen 2010 and the room lighting device 2007 in combination, it is possible to secure the desk surface illumination sufficient for working the entire room 2003. Therefore, a more stable and bright light environment can be obtained without being affected by the season or weather.
  • the illuminance on the desk surface sufficient for work is ensured while reducing the light output of the indoor lighting device 2007. can do. Therefore, the power consumption of the indoor lighting device 2007 can be reduced.
  • the daylighting sheet is configured to be held on the rear surface of the screen, but is not limited thereto.
  • the daylighting sheet may be configured to be held on the front surface of the screen.
  • the holding means is also provided on the front surface of the screen.
  • the daylighting unit may protrude to the front side or may protrude to the rear side. That is, in each embodiment described above, the daylighting sheet may be provided so as to be reversed in the thickness direction X.
  • the optical function layer of the daylighting sheet has a function of reflecting incident light L1 obliquely upward.
  • the present invention is not limited to this, and has other optical characteristics. May be.
  • the optical functional layer may be configured to have a light diffusion function.
  • the lighting device is not limited to a roll screen, and can be applied to any product as long as the product has a configuration in which a daylighting sheet is held on the screen.
  • the screen includes, for example, all fabrics made of fibers.
  • the daylighting device may be applied to a screen that does not have a winding mechanism, or may be applied to a blind in which a slat is a screen.
  • One embodiment of the present invention can be applied to a daylighting apparatus or the like that needs to suppress the breakage of the holding means that holds the daylighting sheet with respect to the screen.
  • fixing means 80, 180, 280, 380, 480, 580, 680, 780, 880, 980, 1080, 1180, 1280, 1380, 1480, 1580 ... holding Means, 371, 471, 571, 671, 771 ... auxiliary sheet 831 ... optical sheet, 890,990,1090,11 90, 1490, 1590 ... storage part, 1491, 1591 ... storage sheet (covering part), Y ... width direction, Z ... vertical direction (predetermined direction)

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Abstract

One embodiment of a daylighting device according to the present invention is provided with: a light-transmitting screen; a daylighting sheet which is arranged on top of the screen and comprises a light-transmitting base sheet and an optical function layer that is arranged on one surface of the base sheet; and a holding means which holds the daylighting sheet with respect to the screen. The daylighting sheet has a non-fixation part that is not directly affixed to the screen.

Description

採光装置Daylighting equipment
　本発明の一つの態様は、採光装置に関する。
　本願は、２０１７年１月１０日に日本に出願された特願２０１７－００１７４６号について優先権を主張し、その内容をここに援用する。 One embodiment of the present invention relates to a daylighting apparatus.
This application claims priority on Japanese Patent Application No. 2017-001746 filed in Japan on January 10, 2017, the contents of which are incorporated herein by reference.
　布に採光シートが貼り付けられた構成が知られている（例えば、特許文献１等参照）。
特許文献１には、採光シートが貼り付けられた布を巻き取る巻き取り手段を備えたロールスクリーンが記載されている。 A configuration in which a daylighting sheet is attached to a cloth is known (see, for example, Patent Document 1).
Patent Document 1 describes a roll screen provided with winding means for winding a cloth on which a daylighting sheet is attached.
特開２０１６－７１２５１号公報Japanese Unexamined Patent Publication No. 2016-71251
　上記のような構成において、布（スクリーン）と採光シートとでは互いに熱膨張率が異なるため、布および採光シートが熱膨張あるいは熱収縮する場合、布の熱変形量と採光シートの熱変形量とが異なる。そのため、布と採光シートとの間に応力が生じて、布と採光シートとを固定する手段が破損する場合があった。これにより、採光シートが落下する場合があった。 In the above configuration, since the thermal expansion coefficient differs between the cloth (screen) and the daylighting sheet, when the cloth and the daylighting sheet thermally expand or contract, the amount of thermal deformation of the cloth and the daylighting sheet Is different. For this reason, stress is generated between the cloth and the daylighting sheet, and the means for fixing the cloth and the daylighting sheet may be damaged. Thereby, the daylighting sheet may fall.
　本発明の一態様は、上記問題点に鑑みて、採光シートをスクリーンに対して保持する保持手段が破損することを抑制できる採光装置を提供することを目的の一つとする。 An object of one embodiment of the present invention is to provide a daylighting device that can suppress the breakage of a holding unit that holds a daylighting sheet with respect to a screen in view of the above problems.
　本発明の採光装置の一つの態様は、透光性を有するスクリーンと、透光性を有する基材シートおよび前記基材シートの一方側の面に配置された光学機能層を有し、前記スクリーンに重ねて配置された採光シートと、前記採光シートを前記スクリーンに対して保持する保持手段と、を備え、前記採光シートは、前記スクリーンに対して直接的に固定されない非固定部を有する。 One aspect of the daylighting device of the present invention includes a screen having translucency, a base sheet having translucency, and an optical functional layer disposed on one surface of the base sheet. And a holding means for holding the daylighting sheet with respect to the screen, and the daylighting sheet has a non-fixed portion that is not directly fixed to the screen.
　前記保持手段は、前記採光シートの一部を前記スクリーンに直接的に固定する固定手段を有する構成としてもよい。 The holding unit may include a fixing unit that directly fixes a part of the daylighting sheet to the screen.
　前記非固定部は、前記採光シートの外縁のうちの少なくとも一部を含む構成としてもよい。 The non-fixed portion may include at least a part of the outer edge of the daylighting sheet.
　前記固定手段は、前記採光シートの上端部を前記スクリーンに直接的に固定し、前記採光シートのうち前記固定手段よりも下側に位置する部分は、前記非固定部である構成としてもよい。 The fixing means may fix the upper end portion of the daylighting sheet directly to the screen, and a portion of the daylighting sheet located below the fixing means may be the non-fixed portion.
　前記基材シートの上下方向の熱膨張率は、前記基材シートの上下方向と直交する幅方向の熱膨張率よりも大きい構成としてもよい。 The thermal expansion coefficient in the vertical direction of the base sheet may be larger than the thermal expansion coefficient in the width direction perpendicular to the vertical direction of the base sheet.
　前記保持手段は、前記採光シートの前記スクリーンと逆側の面に重ねて配置された透光性を有する補助シートを有し、前記補助シートは、前記スクリーンの面に直接的に固定されている構成としてもよい。 The holding means includes a light-transmitting auxiliary sheet disposed on the surface of the daylighting sheet opposite to the screen, and the auxiliary sheet is directly fixed to the surface of the screen. It is good also as a structure.
　前記保持手段は、前記スクリーンに設けられた袋状の収納部を有し、前記収納部は、透光性を有し、前記採光シートは、前記収納部に収納され、前記採光シート全体が、前記非固定部である構成としてもよい。 The holding means has a bag-shaped storage part provided on the screen, the storage part has translucency, the daylighting sheet is stored in the storage part, and the entire daylighting sheet is It is good also as a structure which is the said non-fixed part.
　前記収納部は、前記採光シートを覆う被覆部を有し、前記被覆部は、入射した光を拡散する異方性拡散機能を有する構成としてもよい。 The storage unit may have a cover that covers the daylighting sheet, and the cover may have an anisotropic diffusion function of diffusing incident light.
　前記採光シートは、前記スクリーンの面と平行な面内に複数設けられている構成としてもよい。 A plurality of the daylighting sheets may be provided in a plane parallel to the plane of the screen.
　複数の前記採光シートは、互いに異なる光学特性を有する構成としてもよい。 The plurality of daylighting sheets may have different optical characteristics.
　前記採光シートは、前記基材シートと重ねて配置された光学シートを有し、前記光学シートは、前記光学機能層と異なる光学特性を有する構成としてもよい。 The daylighting sheet may have an optical sheet disposed so as to overlap the base material sheet, and the optical sheet may have a different optical characteristic from the optical functional layer.
　前記光学機能層は、所定方向に並んで配置された複数の採光部を有し、前記採光部は、前記採光部に入射された光の少なくとも一部を前記所定方向の一方側に向けて反射する反射面を有する構成としてもよい。 The optical functional layer includes a plurality of daylighting units arranged in a predetermined direction, and the daylighting unit reflects at least a part of light incident on the daylighting unit toward one side of the predetermined direction. It is good also as a structure which has a reflective surface to do.
　前記採光シートは、前記採光部から射出された光が入射される光拡散部を有する構成としてもよい。 The daylighting sheet may have a light diffusing part into which the light emitted from the daylighting part is incident.
　前記スクリーンを巻き取り可能な巻取機構をさらに備え、ロールスクリーンである構成としてもよい。 A winding mechanism that can wind the screen is further provided, and a roll screen may be used.
　本発明の一つの態様によれば、採光シートをスクリーンに対して保持する保持手段が破損することを抑制できる採光装置が提供される。 According to one aspect of the present invention, there is provided a daylighting apparatus that can suppress the breakage of the holding means for holding the daylighting sheet with respect to the screen.
図１は、第１実施形態のロールスクリーンが配置された部屋を示す図である。FIG. 1 is a diagram illustrating a room in which the roll screen according to the first embodiment is arranged. 図２は、第１実施形態のロールスクリーンを後側から視た図である。FIG. 2 is a rear view of the roll screen according to the first embodiment. 図３は、第１実施形態の採光シートを示す斜視図である。FIG. 3 is a perspective view showing the daylighting sheet of the first embodiment. 図４は、第１実施形態のロールスクリーンを示す図であって、図２におけるIV－IV断面図である。4 is a view showing the roll screen of the first embodiment, and is a cross-sectional view taken along the line IV-IV in FIG. 図５は、第２実施形態のロールスクリーンを後側から視た図である。FIG. 5 is a view of the roll screen according to the second embodiment viewed from the rear side. 図６は、第３実施形態のロールスクリーンを後側から視た図である。FIG. 6 is a view of the roll screen of the third embodiment viewed from the rear side. 図７は、第４実施形態のロールスクリーンを後側から視た図である。FIG. 7 is a view of the roll screen of the fourth embodiment viewed from the rear side. 図８は、第５実施形態のロールスクリーンを後側から視た図である。FIG. 8 is a view of the roll screen of the fifth embodiment viewed from the rear side. 図９は、第６実施形態のロールスクリーンを後側から視た図である。FIG. 9 is a view of the roll screen of the sixth embodiment viewed from the rear side. 図１０は、第７実施形態のロールスクリーンを後側から視た図である。FIG. 10 is a view of the roll screen of the seventh embodiment viewed from the rear side. 図１１は、第８実施形態のロールスクリーンを後側から視た図である。FIG. 11 is a view of the roll screen of the eighth embodiment viewed from the rear side. 図１２は、第９実施形態のロールスクリーンを後側から視た図である。FIG. 12 is a view of the roll screen of the ninth embodiment viewed from the rear side. 図１３は、第９実施形態のロールスクリーンを示す図であって、図１２におけるXIII－XIII断面図である。FIG. 13 is a view showing a roll screen of the ninth embodiment, and is a cross-sectional view taken along the line XIII-XIII in FIG. 図１４は、第１０実施形態のロールスクリーンを後側から視た図である。FIG. 14 is a view of the roll screen of the tenth embodiment viewed from the rear side. 図１５は、第１１実施形態のロールスクリーンを後側から視た図である。FIG. 15 is a view of the roll screen of the eleventh embodiment viewed from the rear side. 図１６は、第１２実施形態のロールスクリーンを後側から視た図である。FIG. 16 is a view of the roll screen of the twelfth embodiment as viewed from the rear side. 図１７は、第１３実施形態のロールスクリーンを後側から視た図である。FIG. 17 is a view of the roll screen according to the thirteenth embodiment as viewed from the rear side. 図１８は、第１４実施形態のロールスクリーンを後側から視た図である。FIG. 18 is a view of the roll screen of the fourteenth embodiment viewed from the rear side. 図１９は、第１５実施形態のロールスクリーンを後側から視た図である。FIG. 19 is a view of the roll screen of the fifteenth embodiment viewed from the rear side. 図２０は、第１６実施形態のロールスクリーンを後側から視た図である。FIG. 20 is a view of the roll screen of the sixteenth embodiment viewed from the rear side. 図２１は、第１７実施形態のロールスクリーンを後側から視た図である。FIG. 21 is a view of the roll screen of the seventeenth embodiment viewed from the rear side. 図２２は、第１８実施形態のロールスクリーンを後側から視た図である。FIG. 22 is a view of the roll screen of the eighteenth embodiment viewed from the rear side. 図２３は、第１８実施形態のロールスクリーンを示す図であって、図２２におけるXXIII－XXIII断面図である。FIG. 23 is a view showing the roll screen of the eighteenth embodiment and is a cross-sectional view taken along the line XXIII-XXIII in FIG. 図２４は、第１９実施形態のロールスクリーンを後側から視た図である。FIG. 24 is a rear view of the roll screen according to the nineteenth embodiment. 図２５は、第２０実施形態のロールスクリーンを後側から視た図である。FIG. 25 is a rear view of the roll screen according to the twentieth embodiment. 図２６は、第２１実施形態のロールスクリーンを設置した部屋を示す図であって、図２７におけるXXVI－XXVI断面図である。26 is a view showing a room in which the roll screen according to the twenty-first embodiment is installed, and is a cross-sectional view taken along the line XXVI-XXVI in FIG. 図２７は、第２１実施形態のロールスクリーンを設置した部屋の天井を示す平面図である。FIG. 27 is a plan view showing a ceiling of a room in which the roll screen according to the twenty-first embodiment is installed. 図２８は、第２１実施形態のロールスクリーンを介して部屋内に採光された光（太陽光）による机上面照度と、室内照明装置から射出された光による机上面照度との関係の一例を示すグラフである。FIG. 28 shows an example of the relationship between the desk surface illuminance by the light (sunlight) collected in the room through the roll screen of the twenty-first embodiment and the desk top illuminance by the light emitted from the room lighting device. It is a graph.
　以下、図面を参照しながら、本発明の実施形態に係る採光装置について説明する。以下の各実施形態では、一例として、採光装置がロールスクリーンである場合について説明する。なお、本発明の範囲は、以下の実施の形態に限定されず、本発明の技術的思想の範囲内で任意に変更可能である。また、以下の図面においては、各構成をわかりやすくするために、各構造における縮尺および数等を、実際の構造における縮尺および数等と異ならせる場合がある。 Hereinafter, a daylighting apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following embodiments, as an example, a case where the daylighting device is a roll screen will be described. The scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of the present invention. In the following drawings, the scale and number of each structure may be different from the scale and number of the actual structure in order to make each configuration easy to understand.
　各図に適宜示した３次元直交座標系（ＸＹＺ座標系）において、Ｚ軸方向は、上下方向Ｚとする。Ｘ軸方向およびＹ軸方向は、Ｚ軸方向と直交する水平方向の一方向であり、互いに直交する方向とする。 In the three-dimensional orthogonal coordinate system (XYZ coordinate system) shown as appropriate in each drawing, the Z-axis direction is the vertical direction Z. The X-axis direction and the Y-axis direction are one direction in the horizontal direction orthogonal to the Z-axis direction and are orthogonal to each other.
＜第１実施形態＞
　本実施形態のロールスクリーン１０は、図１に示すように、例えば、部屋Ｒ内の天井Ｃに取り付けられる。ロールスクリーン１０は、部屋Ｒ内において窓ＷＤを覆うことが可能なように配置されている。ロールスクリーン１０は、スクリーン２０と、巻取機構４０と、採光シート３０と、保持手段８０と、を備える。 <First Embodiment>
The roll screen 10 of this embodiment is attached to the ceiling C in the room R, for example, as shown in FIG. The roll screen 10 is arranged in the room R so as to cover the window WD. The roll screen 10 includes a screen 20, a winding mechanism 40, a daylighting sheet 30, and a holding unit 80.
　スクリーン２０は、透光性を有する。スクリーン２０は、巻取機構４０によって巻き取られることが可能である。本明細書において「透光性を有する」とは、スクリーン２０に入射される光の少なくとも一部が、スクリーン２０を透過することを含む。スクリーン２０の可視光の透過率は、例えば、３０％以上である。スクリーン２０の材質は、透光性を有するならば、特に限定されない。スクリーン２０は、例えば、繊維で構成された布であってもよいし、樹脂製のシートであってもよい。 The screen 20 has translucency. The screen 20 can be wound up by the winding mechanism 40. In this specification, “having translucency” includes that at least part of light incident on the screen 20 is transmitted through the screen 20. The visible light transmittance of the screen 20 is, for example, 30% or more. The material of the screen 20 will not be specifically limited if it has translucency. The screen 20 may be, for example, a cloth made of fibers or a resin sheet.
　図１および図２においては、スクリーン２０が巻取機構４０によって巻き取られていない状態を示している。以下、スクリーン２０が巻取機構４０によって巻き取られていない状態を「展開状態」と呼ぶ。図２に示すように、スクリーン２０は、展開状態において、上下方向Ｚに長い長方形状である。 1 and 2 show a state where the screen 20 is not taken up by the take-up mechanism 40. FIG. Hereinafter, a state where the screen 20 is not wound by the winding mechanism 40 is referred to as a “deployed state”. As shown in FIG. 2, the screen 20 has a rectangular shape that is long in the vertical direction Z in the unfolded state.
　スクリーン２０は、厚み方向がＸ軸方向と平行な方向で、かつ、展開状態における短手方向がＹ軸方向と平行な方向となるように配置されている。以下の説明においては、Ｘ軸方向と平行な方向を厚み方向Ｘと呼び、Ｙ軸方向と平行な方向を幅方向Ｙと呼ぶ。また、Ｘ軸方向の正の側を「前側」と呼び、Ｘ軸方向の負の側を「後側」と呼ぶ。また、ある対象に対して、幅方向Ｙにおけるロールスクリーンの中心に近い側を「幅方向内側」と呼び、幅方向Ｙにおけるロールスクリーンの中心から遠い側を「幅方向外側」と呼ぶ。なお、上下方向、前側、および後側等は、本明細書において各部の配置関係等を説明するための名称であり、実際の配置関係等はこれらの名称で限定される以外の配置関係等であってもよい。 The screen 20 is disposed so that the thickness direction is parallel to the X-axis direction, and the short direction in the unfolded state is parallel to the Y-axis direction. In the following description, a direction parallel to the X-axis direction is referred to as a thickness direction X, and a direction parallel to the Y-axis direction is referred to as a width direction Y. The positive side in the X-axis direction is referred to as “front side”, and the negative side in the X-axis direction is referred to as “rear side”. Further, for a certain object, the side close to the center of the roll screen in the width direction Y is referred to as “width direction inner side”, and the side far from the center of the roll screen in the width direction Y is referred to as “width direction outer side”. In addition, the vertical direction, the front side, the rear side, and the like are names for explaining the arrangement relationship of each part in this specification, and the actual arrangement relationship etc. is an arrangement relationship other than those limited by these names. There may be.
　展開状態におけるスクリーン２０の上下方向Ｚの寸法Ｈ１は、例えば、２７００ｍｍである。スクリーン２０の幅方向Ｙの寸法Ｗ１は、例えば、１８００ｍｍである。 Dimension H1 in the vertical direction Z of the screen 20 in the unfolded state is 2700 mm, for example. A dimension W1 in the width direction Y of the screen 20 is, for example, 1800 mm.
　巻取機構４０は、図１に示すように、天井Ｃに設けられた凹部ＣＡ内に収容されている。巻取機構４０は、スクリーン２０を巻き取り可能である。巻取機構４０は、幅方向Ｙに延びた円筒状の巻き芯４１を有する。巻き芯４１には、スクリーン２０の上端が固定されている。巻取機構４０は、巻き芯４１を幅方向Ｙと平行な中心軸周りに回転させることで、スクリーン２０を巻き芯４１の周りに巻き付けて、スクリーン２０を巻き取ることができる。スクリーン２０の下端は、巻取機構４０によって巻き取られることで上側に移動する。スクリーン２０は、巻取機構４０によって完全に巻き取られると、凹部ＣＡ内に収納される。巻取機構４０は、巻き取ったスクリーン２０を巻き出し可能である。スクリーン２０の下端は、巻取機構４０によって巻き出されることで下側に移動する。スクリーン２０は、完全に巻き出されると展開状態となり、窓ＷＤの前側の面の全体を覆う。 The winding mechanism 40 is accommodated in a recess CA provided in the ceiling C as shown in FIG. The winding mechanism 40 can wind the screen 20. The winding mechanism 40 has a cylindrical winding core 41 extending in the width direction Y. The upper end of the screen 20 is fixed to the winding core 41. The winding mechanism 40 can wind the screen 20 by winding the screen 20 around the winding core 41 by rotating the winding core 41 around the central axis parallel to the width direction Y. The lower end of the screen 20 moves upward by being wound by the winding mechanism 40. When the screen 20 is completely wound by the winding mechanism 40, it is accommodated in the recess CA. The winding mechanism 40 can unwind the wound screen 20. The lower end of the screen 20 moves downward by being unwound by the winding mechanism 40. When the screen 20 is completely unwound, the screen 20 is unfolded and covers the entire front surface of the window WD.
　採光シート３０は、スクリーン２０に重ねて配置されている。本実施形態では、採光シート３０は、スクリーン２０の窓ＷＤ側（後側）の面に重ねて配置されている。図２に示すように、採光シート３０は、幅方向Ｙに長い長方形状である。採光シート３０の上下方向Ｚの寸法Ｈ３は、例えば、５００ｍｍである。採光シート３０の幅方向Ｙの寸法Ｗ２は、例えば、１７５０ｍｍである。 The daylighting sheet 30 is disposed so as to overlap the screen 20. In the present embodiment, the daylighting sheet 30 is disposed so as to overlap the window WD side (rear side) surface of the screen 20. As shown in FIG. 2, the daylighting sheet 30 has a rectangular shape that is long in the width direction Y. The dimension H3 in the vertical direction Z of the daylighting sheet 30 is, for example, 500 mm. The dimension W2 in the width direction Y of the daylighting sheet 30 is 1750 mm, for example.
　採光シート３０は、図３に示すように、基材シート５０および光学機能層６０を有する。基材シート５０は、図４に示すように、スクリーン２０の後側の面に固定されている。
基材シート５０は、透光性を有する。基材シート５０は、図３に示すように、主面が上下方向Ｚと平行で幅方向Ｙに長い長方形状のシートである。本実施形態において基材シート５０は、例えば、延伸フィルムである。基材シート５０の延伸方向は、例えば、上下方向Ｚである。基材シート５０の上下方向Ｚの熱膨張率は、基材シート５０の上下方向Ｚと直交する幅方向Ｙの熱膨張率よりも大きい。 As illustrated in FIG. 3, the daylighting sheet 30 includes a base sheet 50 and an optical functional layer 60. As shown in FIG. 4, the base sheet 50 is fixed to the rear surface of the screen 20.
The base material sheet 50 has translucency. As shown in FIG. 3, the base sheet 50 is a rectangular sheet whose main surface is parallel to the vertical direction Z and long in the width direction Y. In the present embodiment, the base sheet 50 is, for example, a stretched film. The extending | stretching direction of the base material sheet 50 is the up-down direction Z, for example. The thermal expansion coefficient in the vertical direction Z of the base sheet 50 is larger than the thermal expansion coefficient in the width direction Y orthogonal to the vertical direction Z of the base sheet 50.
　基材シート５０は、熱可塑性ポリマーや熱硬化性樹脂、光重合性樹脂等の光透過性樹脂から構成される。光透過性樹脂としては、例えばアクリル系ポリマー、オレフィン系ポリマー、ビニル系ポリマー、セルロース系ポリマー、アミド系ポリマー、フッ素系ポリマー、ウレタン系ポリマー、シリコーン系ポリマー、イミド系ポリマー等からなる樹脂を用いることができる。その中でも、例えばポリメタクリル酸メチル樹脂（ＰＭＭＡ）、トリアセチルセルロース（ＴＡＣ）、ポリエチレンテレフタレート（ＰＥＴ）、シクロオレフィンポリマー（ＣＯＰ）、ポリカーボネート（ＰＣ）、ポリエチレンナフタレート（ＰＥＮ）、ポリエーテルサルホン（ＰＥＳ）、ポリイミド（ＰＩ）等を好適に用いることができる。基材シート５０は、複数の材質が積層された積層構造であってもよい。基材シート５０の全光線透過率は、ＪＩＳ　Ｋ７３６１－１の規定で９０％以上が好ましい。これにより、十分な透明性を得ることができる。基材シート５０の厚みは、巻取機構４０による収納性を考慮して、５０μｍ以上、５００μｍ以下程度が好ましい。 The base sheet 50 is made of a light transmissive resin such as a thermoplastic polymer, a thermosetting resin, or a photopolymerizable resin. As the light transmissive resin, for example, a resin made of an acrylic polymer, an olefin polymer, a vinyl polymer, a cellulose polymer, an amide polymer, a fluorine polymer, a urethane polymer, a silicone polymer, an imide polymer, or the like is used. Can do. Among them, for example, polymethyl methacrylate resin (PMMA), triacetyl cellulose (TAC), polyethylene terephthalate (PET), cycloolefin polymer (COP), polycarbonate (PC), polyethylene naphthalate (PEN), polyethersulfone ( PES), polyimide (PI) and the like can be preferably used. The base sheet 50 may have a laminated structure in which a plurality of materials are laminated. The total light transmittance of the base sheet 50 is preferably 90% or more as defined in JIS K7361-1. Thereby, sufficient transparency can be obtained. The thickness of the base material sheet 50 is preferably about 50 μm or more and 500 μm or less in consideration of the storage by the winding mechanism 40.
　光学機能層６０は、基材シート５０の後側（一方側，－Ｘ側）の面である後面５０ａに配置されている。光学機能層６０は、上下方向（所定方向）Ｚに並んで配置された複数の採光部６１を有する。採光部６１は、基材シート５０の後面５０ａから後側に突出する数十～数百μｍオーダーの微細な凸部である。各採光部６１は、上下方向Ｚと直交する方向、すなわち図３では幅方向Ｙに延びている。本実施形態において採光部６１は、基材シート５０の幅方向Ｙの一端から他端まで延びている。図４に示すように、採光部６１は、採光部６１の長手方向（幅方向Ｙ）と直交する断面（ＺＸ断面）形状が多角形状をなしている。 The optical functional layer 60 is disposed on the rear surface 50a which is the rear surface (one side, -X side) of the base sheet 50. The optical functional layer 60 has a plurality of daylighting portions 61 arranged in the vertical direction (predetermined direction) Z. The daylighting part 61 is a fine convex part of the order of several tens to several hundreds of micrometers that protrudes rearward from the rear surface 50a of the base sheet 50. Each daylighting unit 61 extends in a direction orthogonal to the vertical direction Z, that is, in the width direction Y in FIG. In the present embodiment, the daylighting unit 61 extends from one end in the width direction Y of the base sheet 50 to the other end. As shown in FIG. 4, the daylighting unit 61 has a polygonal cross section (ZX cross section) shape orthogonal to the longitudinal direction (width direction Y) of the daylighting unit 61.
　採光部６１は、採光部６１における基材シート５０から最も離れた頂点６１ａを通る基材シート５０の垂線Ｑを中心として、垂線Ｑの上下方向両側の形状が非対称とされた、断面形状が五角形の多角柱状の構造体である。なお、採光部６１の断面形状は、図示したものに限られず、ロールスクリーン１０の用途等に応じて、適宜設計変更することが可能である。採光部６１は、採光部６１に入射された光の少なくとも一部を上側（所定方向の一方側）に向けて反射する反射面６１ｃを有する。 The daylighting unit 61 has a pentagonal cross-sectional shape in which the shape on both sides in the vertical direction of the vertical line Q is asymmetric with respect to the vertical line Q of the base material sheet 50 passing through the vertex 61a farthest from the base material sheet 50 in the daylighting unit 61. It is a polygonal columnar structure. The cross-sectional shape of the daylighting unit 61 is not limited to the illustrated one, and can be appropriately changed in design according to the application of the roll screen 10 or the like. The daylighting unit 61 includes a reflection surface 61c that reflects at least a part of the light incident on the daylighting unit 61 toward the upper side (one side in a predetermined direction).
　光学機能層６０は、複数の採光部６１の間に設けられた空隙部６２を有する。隣り合う採光部６１の間の空隙部６２には空気が存在している。したがって、空隙部６２の屈折率は、概ね１．０である。空隙部６２の屈折率を１．０とすることにより、空隙部６２と採光部６１との界面における臨界角が最小となる。 The optical functional layer 60 has a gap portion 62 provided between a plurality of daylighting portions 61. Air exists in the gap 62 between the adjacent daylighting portions 61. Therefore, the refractive index of the gap 62 is approximately 1.0. By setting the refractive index of the gap 62 to 1.0, the critical angle at the interface between the gap 62 and the daylighting portion 61 is minimized.
　基材シート５０の屈折率と採光部６１の屈折率とは、略同等であることが好ましい。基材シート５０の屈折率と採光部６１の屈折率とが大きく異なる場合、光が採光部６１から基材シート５０に入射したとき、採光部６１と基材シート５０との界面で不要な光の屈折や反射が生じることがある。この場合、所望の採光特性が得られない場合がある。基材シート５０の屈折率と採光部６１の屈折率とを略同等とすることにより、所望の採光特性を得やすい。 It is preferable that the refractive index of the base sheet 50 and the refractive index of the daylighting unit 61 are substantially equal. When the refractive index of the base material sheet 50 and the refractive index of the daylighting unit 61 are greatly different, when light enters the basement sheet 50 from the daylighting unit 61, unnecessary light is generated at the interface between the daylighting unit 61 and the base material sheet 50. Refraction and reflection may occur. In this case, desired lighting characteristics may not be obtained. By making the refractive index of the base sheet 50 substantially the same as the refractive index of the daylighting unit 61, it is easy to obtain desired lighting characteristics.
　採光部６１は、例えばアクリル樹脂、エポキシ樹脂、シリコーン樹脂等の光透過性および感光性を有する有機材料で構成される。また、採光部６１は、これらの有機材料に、重合開始剤、カップリング剤、モノマー、有機溶媒等を混合した混合物で構成されてもよい。採光部６１を構成する混合物に重合開始剤が含まれている場合、重合開始剤は安定剤、禁止剤、可塑剤、蛍光増白剤、離型剤、連鎖移動剤、他の光重合性単量体等のような各種の追加成分を含んでいてもよい。採光部６１の全光線透過率は、ＪＩＳ　Ｋ７３６１－１の規定で９０％以上が好ましい。これにより、十分な透明性を得ることができる。 The daylighting unit 61 is made of an organic material having light transmissivity and photosensitivity such as an acrylic resin, an epoxy resin, or a silicone resin. Moreover, the lighting part 61 may be comprised with the mixture which mixed the polymerization initiator, the coupling agent, the monomer, the organic solvent, etc. in these organic materials. When the mixture constituting the daylighting unit 61 contains a polymerization initiator, the polymerization initiator is a stabilizer, an inhibitor, a plasticizer, a fluorescent brightening agent, a release agent, a chain transfer agent, and other photopolymerizable monomers. Various additional components such as a monomer may be contained. The total light transmittance of the daylighting unit 61 is preferably 90% or more in accordance with JIS K7361-1. Thereby, sufficient transparency can be obtained.
　保持手段８０は、採光シート３０をスクリーン２０に対して保持する。本実施形態において保持手段８０は、採光シート３０の一部をスクリーン２０に直接的に固定する固定手段７０を有する。固定手段７０は、採光シート３０をスクリーン２０に固定できるならば特に限定されない。固定手段７０は、接着剤であってもよいし、粘着剤であってもよいし、金属製の留め具であってもよいし、樹脂製の留め具であってもよいし、糸による縫合であってもよい。本実施形態において固定手段７０は、粘着テープである。固定手段７０は、透光性を有することが好ましい。固定手段７０は、スクリーン２０の後面と基材シート５０の前面とを接着している。 The holding means 80 holds the daylighting sheet 30 against the screen 20. In the present embodiment, the holding unit 80 includes a fixing unit 70 that directly fixes a part of the daylighting sheet 30 to the screen 20. The fixing means 70 is not particularly limited as long as the daylighting sheet 30 can be fixed to the screen 20. The fixing means 70 may be an adhesive, an adhesive, a metal fastener, a resin fastener, or suture with a thread. It may be. In this embodiment, the fixing means 70 is an adhesive tape. The fixing means 70 preferably has translucency. The fixing means 70 bonds the rear surface of the screen 20 and the front surface of the base sheet 50.
　固定手段７０は、採光シート３０とスクリーン２０との厚み方向Ｘの間における上端部に配置されている。すなわち、固定手段７０は、採光シート３０の上端部をスクリーン２０に直接的に固定している。固定手段７０は、図２に示すように、採光シート３０の幅方向Ｙの一端から他端まで、幅方向Ｙに延びている。すなわち、固定手段７０は、採光シート３０の上端部を幅方向Ｙの全体に亘ってスクリーン２０に直接的に固定している。 The fixing means 70 is disposed at the upper end between the daylighting sheet 30 and the screen 20 in the thickness direction X. That is, the fixing means 70 directly fixes the upper end portion of the daylighting sheet 30 to the screen 20. As shown in FIG. 2, the fixing means 70 extends in the width direction Y from one end to the other end in the width direction Y of the daylighting sheet 30. That is, the fixing means 70 fixes the upper end portion of the daylighting sheet 30 directly to the screen 20 over the entire width direction Y.
　採光シート３０は、スクリーン２０に対して直接的に固定されない非固定部３０ａを有する。非固定部３０ａは、採光シート３０のうち固定手段７０によってスクリーン２０に固定されていない部分である。本実施形態では、採光シート３０のうち固定手段７０よりも下側に位置する部分が非固定部３０ａである。非固定部３０ａは、採光シート３０の外縁のうちの少なくとも一部を含む。本実施形態では、非固定部３０ａは、採光シート３０の外縁のうち、下側の縁と、幅方向両側の縁の上端部を除く部分と、を含む。図４に示すように、非固定部３０ａとスクリーン２０との間には隙間ＤＰが設けられている。隙間ＤＰは、下側および幅方向Ｙの両側に開口している。 The daylighting sheet 30 has a non-fixed portion 30 a that is not directly fixed to the screen 20. The non-fixed portion 30 a is a portion of the daylighting sheet 30 that is not fixed to the screen 20 by the fixing means 70. In the present embodiment, the portion of the daylighting sheet 30 that is located below the fixing means 70 is the non-fixed portion 30a. The non-fixed portion 30 a includes at least a part of the outer edge of the daylighting sheet 30. In the present embodiment, the non-fixed portion 30 a includes a lower edge and a portion excluding the upper ends of the edges on both sides in the width direction, of the outer edge of the daylighting sheet 30. As shown in FIG. 4, a gap DP is provided between the non-fixed portion 30 a and the screen 20. The gap DP is open on the lower side and both sides in the width direction Y.
　なお、本明細書において、被固定部が対象物に対して直接的に固定されるとは、被固定部が対象物に対して直接接触して固定される、または被固定部と対象物との間に被固定部と対象物とを接続する固定手段が設けられて、被固定部が対象物に固定されることを含む。本実施形態においては、被固定部としての採光シート３０の上端部とスクリーン２０との間に、採光シート３０の上端部とスクリーン２０とを接続する固定手段７０が設けられて、採光シート３０の上端部がスクリーン２０に固定されている。 In addition, in this specification, that the fixed part is fixed directly to the object means that the fixed part is fixed in direct contact with the object, or the fixed part and the object are fixed. A fixing means for connecting the fixed part and the object is provided between the fixed part and the fixed part to be fixed to the object. In the present embodiment, a fixing means 70 for connecting the upper end portion of the daylighting sheet 30 and the screen 20 is provided between the upper end portion of the daylighting sheet 30 as the fixed portion and the screen 20. The upper end is fixed to the screen 20.
　本実施形態において採光シート３０には、図１に示すように、後側斜め上方から光Ｌ１が入射する。光Ｌ１は、窓ＷＤの外側（後側）から部屋Ｒ内に入射する光Ｌのうち窓ＷＤの比較的上側の部分から部屋Ｒ内に入射する光である。採光シート３０に入射した光Ｌ１は、図４に示すように、採光部６１の複数の面のうち、上向きに傾いた光入射端面６１ｂから採光部６１に入射する。採光部６１に入射した光Ｌ１は、反射面６１ｃで全反射して前側斜め上方に向かって進み、採光部６１の射出面６１ｄから射出される。採光部６１から射出されたＬ１は、基材シート５０、隙間ＤＰおよびスクリーン２０を透過して前側斜め上方に向かって射出される。これにより、採光シート３０から射出された光Ｌ１は、図１に示すように天井Ｃの天井面を照らす。 In the present embodiment, the light L1 is incident on the daylighting sheet 30 from obliquely upward on the rear side, as shown in FIG. The light L1 is light that enters the room R from a relatively upper portion of the window WD among the light L that enters the room R from the outside (rear side) of the window WD. As shown in FIG. 4, the light L1 incident on the daylighting sheet 30 enters the daylighting unit 61 from the light incident end surface 61 b inclined upward among the plurality of surfaces of the daylighting unit 61. The light L1 incident on the daylighting unit 61 is totally reflected by the reflection surface 61c, travels obliquely upward on the front side, and is emitted from the emission surface 61d of the daylighting unit 61. L1 emitted from the daylighting unit 61 passes through the base sheet 50, the gap DP, and the screen 20, and is emitted obliquely upward on the front side. Thereby, the light L1 emitted from the daylighting sheet 30 illuminates the ceiling surface of the ceiling C as shown in FIG.
　窓ＷＤの外側（後側）から部屋Ｒ内に入射する光Ｌのうち窓ＷＤの比較的下側の部分から部屋Ｒ内に入射する光である光Ｌ２は、採光シート３０に入射されず、後側斜め上方からスクリーン２０に入射する。より詳細には、光Ｌ２は、スクリーン２０のうち採光シート３０よりも下側に位置する部分に入射する。光Ｌ２は、スクリーン２０を透過して部屋Ｒの床面に照射される。 Of the light L that enters the room R from the outside (rear side) of the window WD, the light L2 that enters the room R from a relatively lower part of the window WD is not incident on the daylighting sheet 30. The light enters the screen 20 from obliquely upward on the rear side. More specifically, the light L2 is incident on a portion of the screen 20 that is located below the daylighting sheet 30. The light L2 passes through the screen 20 and is irradiated on the floor surface of the room R.
　採光シート３０は、窓ＷＤの外側（後側）から部屋Ｒ内に入射する光Ｌが部屋Ｒ内に居る人Ｍの眼に直接入りにくい位置に配置されている。例えば、光Ｌ１は、窓ＷＤの比較的上側の部分から部屋Ｒ内に入射する光であるため、光Ｌ１が採光シート３０によって反射されずにスクリーン２０を透過する場合、光Ｌ１は人Ｍの眼に直接入りやすい。そのため、光Ｌ１が入射される位置には、採光シート３０を設けて、光Ｌ１を前側斜め上方に反射することが好ましい。 The daylighting sheet 30 is disposed at a position where the light L entering the room R from the outside (rear side) of the window WD is difficult to directly enter the eyes of the person M in the room R. For example, since the light L1 is light that enters the room R from a relatively upper portion of the window WD, when the light L1 passes through the screen 20 without being reflected by the daylighting sheet 30, the light L1 is the light of the person M. Easy to get into eyes. Therefore, it is preferable to provide a daylighting sheet 30 at a position where the light L1 is incident and reflect the light L1 obliquely upward on the front side.
　一方、光Ｌ２は、窓ＷＤの比較的下側の部分から部屋Ｒ内に入射する光であるため、採光シート３０によって反射されなくても人Ｍの眼に直接入りにくい。むしろ、光Ｌ２は、採光シート３０で前側斜め上方に反射されることで人Ｍの眼に直接入る虞がある。そのため、光Ｌ２が入射される位置には、採光シート３０を設けないことが好ましい。 On the other hand, since the light L2 is light that enters the room R from a relatively lower part of the window WD, it is difficult to directly enter the eyes of the person M even if it is not reflected by the daylighting sheet 30. Rather, the light L <b> 2 may be directly incident on the eyes of the person M by being reflected obliquely upward on the front side by the daylighting sheet 30. Therefore, it is preferable not to provide the daylighting sheet 30 at the position where the light L2 is incident.
　本実施形態では、採光シート３０は、光Ｌ１が入射される一方で、光Ｌ２が入射されない位置に配置されている。すなわち、採光シート３０の下端位置は、光Ｌ１と光Ｌ２との間となるように決められる。これにより、光Ｌが人Ｍの眼に直接入ることが抑制される。
また、光Ｌのうちの光Ｌ１が天井面に照射され、光Ｌのうちの光Ｌ２が床面に照射されるため、窓ＷＤから部屋Ｒ内に入射する光Ｌによって天井面および床面の両方を照らすことができ、部屋Ｒ内を明るくすることができる。採光シート３０の下端位置、すなわち図２に示すスクリーン２０の下端から採光シート３０の下端までの距離Ｈ２は、例えば、２０００ｍｍである。 In the present embodiment, the daylighting sheet 30 is disposed at a position where the light L1 is incident while the light L2 is not incident. That is, the lower end position of the daylighting sheet 30 is determined to be between the light L1 and the light L2. This suppresses the light L from directly entering the eyes of the person M.
Further, since the light L1 of the light L is irradiated on the ceiling surface and the light L2 of the light L is irradiated on the floor surface, the light L entering the room R from the window WD causes the ceiling surface and the floor surface to be irradiated. Both can be illuminated and the interior of the room R can be brightened. The lower end position of the daylighting sheet 30, that is, the distance H2 from the lower end of the screen 20 shown in FIG. 2 to the lower end of the daylighting sheet 30 is, for example, 2000 mm.
　また、採光シート３０の上端位置は、例えば、図１に示す庇ＣＢに応じて決められる。
庇ＣＢは、天井Ｃから窓ＷＤの外側（後側）に突出する部分である。庇ＣＢが設けられていると、光Ｌの一部が遮られて影Ｓが生じる。そのため、ロールスクリーン１０のうち影Ｓの下端よりも上側に位置する部分には、光Ｌが入射されない。したがって、影Ｓの下端に合わせて採光シート３０の上端位置を決めることで、採光シート３０の上下方向Ｚの寸法Ｈ３を必要最小限の大きさとすることができる。スクリーン２０の上端から採光シート３０の上端までの上下方向Ｚの距離Ｈ４は、例えば、２００ｍｍである。 Moreover, the upper end position of the daylighting sheet 30 is determined according to, for example, the ridge CB shown in FIG.
庇 CB is a portion protruding from the ceiling C to the outside (rear side) of the window WD. When 庇 CB is provided, a part of the light L is blocked and a shadow S is generated. Therefore, the light L is not incident on the portion of the roll screen 10 that is located above the lower end of the shadow S. Therefore, by determining the upper end position of the daylighting sheet 30 in accordance with the lower end of the shadow S, the dimension H3 in the vertical direction Z of the daylighting sheet 30 can be set to the minimum necessary size. A distance H4 in the vertical direction Z from the upper end of the screen 20 to the upper end of the daylighting sheet 30 is, for example, 200 mm.
　なお、例えば庇ＣＢが設けられないような場合には、天井Ｃのうち凹部ＣＡが設けられる部分によって影が生じることが考えられるため、天井Ｃのうち凹部ＣＡが設けられる部分によって生じる影の下端に合わせて採光シート３０の上端位置を決めることが好ましい。 For example, in the case where the ridge CB is not provided, a shadow may be generated by a portion of the ceiling C where the concave portion CA is provided. Therefore, the lower end of the shadow generated by a portion of the ceiling C where the concave portion CA is provided. It is preferable to determine the upper end position of the daylighting sheet 30 according to the above.
　スクリーン２０の熱膨張率と採光シート３０の熱膨張率とが異なると、熱膨張あるいは熱収縮する際のスクリーン２０の熱変形量と採光シート３０の熱変形量とが異なる。そのため、例えば、保持手段が採光シート３０の前面の全体をスクリーン２０に直接的に固定する固定手段を有している場合、採光シート３０とスクリーン２０との間に応力が生じて、固定手段の少なくとも一部が破損する場合がある。したがって、採光シート３０がスクリーン２０から落下する場合があった。なお、スクリーン２０および採光シート３０は、例えば、入射する光Ｌによって温度が上昇し、熱変形することが考えられる。 If the thermal expansion coefficient of the screen 20 and the thermal expansion coefficient of the daylighting sheet 30 are different, the thermal deformation amount of the screen 20 and the thermal deformation amount of the daylighting sheet 30 when thermal expansion or thermal contraction is different. Therefore, for example, when the holding means has a fixing means for directly fixing the entire front surface of the daylighting sheet 30 to the screen 20, a stress is generated between the daylighting sheet 30 and the screen 20, and the fixing means At least a portion may be damaged. Therefore, the daylighting sheet 30 may fall from the screen 20. Note that the screen 20 and the daylighting sheet 30 may be heated and deformed due to incident light L, for example.
　この問題に対して、本実施形態によれば、採光シート３０は、非固定部３０ａを有しており、スクリーン２０に直接的に固定されていない部分がある。そのため、採光シート３０の熱変形量とスクリーン２０の熱変形量とが異なっていても、非固定部３０ａによって、採光シート３０とスクリーン２０との間に生じる応力を逃がすことができる。これにより、保持手段８０（固定手段７０）が破損することを抑制できる。したがって、採光シート３０がスクリーン２０から落下することを抑制できる。 In response to this problem, according to the present embodiment, the daylighting sheet 30 has the non-fixed portion 30 a and there is a portion that is not directly fixed to the screen 20. Therefore, even if the amount of thermal deformation of the daylighting sheet 30 and the amount of thermal deformation of the screen 20 are different, the stress generated between the daylighting sheet 30 and the screen 20 can be released by the non-fixed portion 30a. Thereby, it can suppress that the holding means 80 (fixing means 70) breaks. Therefore, the daylighting sheet 30 can be prevented from falling from the screen 20.
　また、本実施形態によれば、保持手段８０が固定手段７０を有するため、採光シート３０をスクリーン２０に対して安定かつ強固に固定することができる。また、採光シート３０をスクリーン２０に対して容易に保持させることができる。 Further, according to the present embodiment, since the holding means 80 has the fixing means 70, the daylighting sheet 30 can be fixed to the screen 20 stably and firmly. Further, the daylighting sheet 30 can be easily held with respect to the screen 20.
　また、例えば、採光シート３０の熱変形量とスクリーン２０の熱変形量とが異なると、熱変形した際に、採光シート３０およびスクリーン２０に反りが生じる場合がある。この場合、採光シート３０の姿勢が変化するため、採光シート３０の光学特性が低下する場合がある。具体的に本実施形態では、採光シート３０によって反射する光Ｌ１の方向が変わり、好適に部屋Ｒ内を照らせない場合がある。 For example, if the amount of thermal deformation of the daylighting sheet 30 and the amount of thermal deformation of the screen 20 are different, the daylighting sheet 30 and the screen 20 may be warped when thermally deformed. In this case, since the posture of the daylighting sheet 30 changes, the optical characteristics of the daylighting sheet 30 may deteriorate. Specifically, in the present embodiment, the direction of the light L1 reflected by the daylighting sheet 30 may change, and the interior of the room R may not be suitably illuminated.
　これに対して、本実施形態によれば、非固定部３０ａは、採光シート３０の外縁のうちの少なくとも一部を含む。そのため、採光シート３０が熱変形した際に、非固定部３０ａの外縁がスクリーン２０に対して相対移動できる。これにより、採光シート３０およびスクリーン２０に反りが生じることを抑制できる。したがって、採光シート３０の光学特性が低下することを抑制できる。 In contrast, according to the present embodiment, the non-fixed portion 30 a includes at least a part of the outer edge of the daylighting sheet 30. Therefore, when the daylighting sheet 30 is thermally deformed, the outer edge of the non-fixed portion 30 a can be moved relative to the screen 20. Thereby, it can suppress that the lighting sheet 30 and the screen 20 generate | occur | produce a curvature. Therefore, it can suppress that the optical characteristic of the daylighting sheet 30 falls.
　具体的に本実施形態では、採光シート３０が上下方向Ｚに熱変形する場合、採光シート３０の下側の縁がスクリーン２０に対して上下方向Ｚに相対移動できる。例えば、採光シート３０が熱収縮する場合では、固定手段７０によって固定された採光シート３０の上端部はスクリーン２０に対して相対移動せずに、非固定部３０ａがスクリーン２０に対して上側に相対移動する。これにより、採光シート３０が熱変形しても、採光シート３０およびスクリーン２０に反りが生じることを抑制できる。 Specifically, in the present embodiment, when the daylighting sheet 30 is thermally deformed in the vertical direction Z, the lower edge of the daylighting sheet 30 can be moved relative to the screen 20 in the vertical direction Z. For example, when the daylighting sheet 30 is thermally contracted, the upper end portion of the daylighting sheet 30 fixed by the fixing means 70 does not move relative to the screen 20, and the non-fixed part 30 a is relatively upward relative to the screen 20. Moving. Thereby, even if the daylighting sheet 30 is thermally deformed, it is possible to suppress warping of the daylighting sheet 30 and the screen 20.
　また、本実施形態によれば、固定手段７０は、採光シート３０の上端部を直接的に固定し、採光シート３０のうち固定手段７０よりも下側に位置する部分は、非固定部３０ａである。そのため、採光シート３０が上端部を支点としてスクリーン２０上に吊るされた状態となる。これにより、採光シート３０の自重によって採光シート３０が伸ばされ、採光シート３０が撓むことを抑制できる。 Moreover, according to this embodiment, the fixing means 70 fixes the upper end part of the lighting sheet 30 directly, and the part located below the fixing means 70 among the lighting sheets 30 is the non-fixing part 30a. is there. For this reason, the daylighting sheet 30 is suspended on the screen 20 with the upper end portion as a fulcrum. Thereby, it can suppress that the daylighting sheet 30 is extended by the dead weight of the daylighting sheet 30, and the daylighting sheet 30 bends.
　また、本実施形態によれば、基材シート５０の上下方向Ｚの熱膨張率は、基材シート５０の幅方向Ｙの熱膨張率よりも大きい。そのため、基材シート５０（採光シート３０）が熱変形する際、上下方向Ｚにおいて特に基材シート５０（採光シート３０）の変形量が大きくなる。そのため、上述したように、採光シート３０をスクリーン２０に対して上下方向Ｚに相対移動できるように固定することで、採光シート３０の変形を効果的に逃がすことができ、保持手段８０の破損をより抑制することができる。 Further, according to the present embodiment, the thermal expansion coefficient in the vertical direction Z of the base sheet 50 is larger than the thermal expansion coefficient in the width direction Y of the base sheet 50. Therefore, when the base material sheet 50 (lighting sheet 30) is thermally deformed, the amount of deformation of the base material sheet 50 (lighting sheet 30) is particularly large in the vertical direction Z. Therefore, as described above, by fixing the daylighting sheet 30 so that it can be moved relative to the screen 20 in the up-and-down direction Z, the deformation of the daylighting sheet 30 can be effectively escaped, and the holding means 80 is damaged. It can be suppressed more.
　また、例えば、採光装置が本実施形態のようなロールスクリーンの場合、採光シート３０は、スクリーン２０と共に巻取機構４０によって巻き取られる。このとき、重ねて配置された採光シート３０とスクリーン２０とでは、巻き芯４１によって筒状に巻き取った際の直径が異なる。そのため、採光シート３０の全体がスクリーン２０と直接的に固定されていると、巻き取った際の直径の差に起因して採光シート３０とスクリーン２０との間に応力が生じる。これにより、採光シート３０をスクリーン２０に固定する手段の少なくとも一部が破損する場合がある。また、採光シート３０が撓んでスクリーン２０を巻き取りにくい場合がある。 For example, when the lighting device is a roll screen as in the present embodiment, the daylighting sheet 30 is wound up by the winding mechanism 40 together with the screen 20. At this time, the daylighting sheet 30 and the screen 20 that are arranged to overlap each other have different diameters when wound in a cylindrical shape by the winding core 41. Therefore, when the entire daylighting sheet 30 is directly fixed to the screen 20, stress is generated between the daylighting sheet 30 and the screen 20 due to a difference in diameter when wound. Thereby, at least a part of the means for fixing the daylighting sheet 30 to the screen 20 may be damaged. Further, the daylighting sheet 30 may be bent and it may be difficult to wind up the screen 20.
　これに対して、本実施形態によれば、上述したように、非固定部３０ａが設けられていることで、採光シート３０とスクリーン２０との間に生じた応力を逃がすことができる。
そのため、ロールスクリーン１０においてスクリーン２０を巻き取った際に保持手段８０が破損することを抑制できる。また、非固定部３０ａが採光シート３０の外縁のうちの少なくとも一部を含み、採光シート３０が熱変形した際にスクリーン２０に対して相対移動可能とすることで、巻き芯４１に巻き取った際に、採光シート３０の直径に応じて採光シート３０がスクリーン２０に対して相対移動する。したがって、採光シート３０が撓むことを抑制でき、巻取機構４０によってスクリーン２０を巻き取ることが容易である。以上のように、本実施形態による効果は、採光装置をロールスクリーンとした場合に、特に有用に得られる。 On the other hand, according to the present embodiment, as described above, the stress generated between the daylighting sheet 30 and the screen 20 can be released by providing the non-fixed portion 30a.
Therefore, it is possible to suppress the holding means 80 from being damaged when the screen 20 is wound on the roll screen 10. In addition, the non-fixed portion 30a includes at least a part of the outer edge of the daylighting sheet 30, and when the daylighting sheet 30 is thermally deformed, it can be moved relative to the screen 20 to be wound around the winding core 41. At this time, the daylighting sheet 30 moves relative to the screen 20 according to the diameter of the daylighting sheet 30. Therefore, the daylighting sheet 30 can be prevented from being bent, and the screen 20 can be easily wound by the winding mechanism 40. As described above, the effects of the present embodiment are particularly useful when the lighting device is a roll screen.
　なお、本発明は上記実施形態に限られず、以下の各実施形態を採用することもできる。
以下の各実施形態の説明においては、上述した実施形態と同様の構成については適宜同一の符号を付す等により説明を省略する場合がある。 In addition, this invention is not restricted to the said embodiment, Each following embodiment can also be employ | adopted.
In the description of each embodiment below, the same configuration as that of the above-described embodiment may be omitted by appropriately attaching the same reference numerals.
　採光部の延びる方向は、上下方向Ｚであってもよい。この構成において、複数の採光部は、幅方向Ｙに並んで配置される。この構成では、採光部は、入射した光Ｌ１を前側斜め幅方向一方側に反射する。また、基材シートの上下方向Ｚの熱膨張率は、基材シートの上下方向Ｚと直交する幅方向Ｙの熱膨張率よりも小さくてもよい。すなわち、基材シートの延伸方向は、幅方向Ｙであってもよい。また、採光シート３０とスクリーン２０との間には隙間ＤＰが設けられていなくてもよい。 The vertical direction Z may be sufficient as the direction where a lighting part extends. In this configuration, the plurality of daylighting units are arranged side by side in the width direction Y. In this configuration, the daylighting unit reflects the incident light L1 to one side in the front oblique width direction. Further, the thermal expansion coefficient in the vertical direction Z of the base sheet may be smaller than the thermal expansion coefficient in the width direction Y orthogonal to the vertical direction Z of the base sheet. That is, the extending direction of the base sheet may be the width direction Y. Further, the gap DP may not be provided between the daylighting sheet 30 and the screen 20.
＜第２実施形態＞
　本実施形態のロールスクリーン１１０において保持手段１８０の固定手段１７０は、図５に示すように、採光シート１３０の上端部のうち、幅方向Ｙの中央部分のみをスクリーン２０に直接的に固定している。本実施形態において採光シート１３０の非固定部１３０ａは、採光シート１３０のうち固定手段１７０よりも下側に位置する部分と、採光シート１３０のうち幅方向Ｙにおいて固定手段１７０の両側に位置する部分と、を含む。本実施形態では、非固定部１３０ａは、採光シート１３０の外縁のうち、下側の縁と、幅方向両側の縁と、上側の縁のうち固定手段１７０が設けられた部分を除く部分と、を含む。採光シート１３０およびロールスクリーン１１０のその他の構成は、第１実施形態の採光シート３０およびロールスクリーン１０の構成と同様である。 Second Embodiment
In the roll screen 110 of the present embodiment, as shown in FIG. 5, the fixing means 170 of the holding means 180 directly fixes only the central portion in the width direction Y to the screen 20 among the upper end portions of the daylighting sheet 130. Yes. In the present embodiment, the non-fixed portion 130a of the daylighting sheet 130 includes a part of the daylighting sheet 130 that is positioned below the fixing unit 170 and a part of the daylighting sheet 130 that is positioned on both sides of the fixing unit 170 in the width direction Y. And including. In the present embodiment, the non-fixed portion 130a includes a lower edge, an edge on both sides in the width direction, and a portion of the upper edge excluding a portion where the fixing means 170 is provided, including. Other configurations of the daylighting sheet 130 and the roll screen 110 are the same as those of the daylighting sheet 30 and the roll screen 10 of the first embodiment.
　本実施形態によれば、固定手段１７０を支点として、採光シート１３０が熱変形した際にスクリーン２０に対して上下方向Ｚおよび幅方向Ｙに相対移動できる。そのため、保持手段１８０（固定手段１７０）が破損することをより抑制できる。 According to the present embodiment, the fixing means 170 can be used as a fulcrum to move in the vertical direction Z and the width direction Y relative to the screen 20 when the daylighting sheet 130 is thermally deformed. Therefore, it can suppress more that the holding means 180 (fixing means 170) is damaged.
＜第３実施形態＞
　本実施形態のロールスクリーン２１０において保持手段２８０は、図６に示すように、３つの固定手段２７０を有する。３つの固定手段２７０は、それぞれ採光シート２３０の上端部のうち、幅方向Ｙの中央部分と、幅方向Ｙの両端部分と、をスクリーン２０に直接的に固定している。本実施形態において採光シート２３０の非固定部２３０ａは、採光シート２３０のうち固定手段２７０よりも下側に位置する部分と、採光シート２３０のうち幅方向Ｙにおいて固定手段２７０同士の間に位置する部分と、を含む。本実施形態では、非固定部２３０ａは、採光シート２３０の外縁のうち、下側の縁と、幅方向両側の縁と、上側の縁のうち３つの固定手段２７０が設けられた部分を除く部分と、を含む。採光シート２３０およびロールスクリーン２１０のその他の構成は、第１実施形態の採光シート３０およびロールスクリーン１０の構成と同様である。 <Third Embodiment>
In the roll screen 210 of the present embodiment, the holding means 280 has three fixing means 270 as shown in FIG. The three fixing means 270 directly fix the central portion in the width direction Y and the both end portions in the width direction Y of the upper end portion of the daylighting sheet 230 directly to the screen 20. In the present embodiment, the non-fixed portion 230a of the daylighting sheet 230 is located between the portion of the daylighting sheet 230 located below the fixing means 270 and the fixing means 270 in the width direction Y of the daylighting sheet 230. And a portion. In the present embodiment, the non-fixed portion 230a is a portion of the outer edge of the daylighting sheet 230 excluding a portion provided with three fixing means 270 among the lower edge, the edges on both sides in the width direction, and the upper edge. And including. Other configurations of the daylighting sheet 230 and the roll screen 210 are the same as those of the daylighting sheet 30 and the roll screen 10 of the first embodiment.
　本実施形態によれば、第１実施形態に対して非固定部２３０ａの面積が広いため、熱変形した際の採光シート２３０とスクリーン２０との間に生じる応力を逃がしやすく、保持手段２８０が破損することをより抑制しやすい。また、第２実施形態に対して採光シート２３０がスクリーン２０に対して固定される部分の面積が広いため、採光シート２３０をより安定してスクリーン２０に固定することができる。 According to the present embodiment, since the area of the non-fixed portion 230a is larger than that of the first embodiment, the stress generated between the daylighting sheet 230 and the screen 20 when thermally deformed is easily released, and the holding means 280 is damaged. It is easier to suppress. Moreover, since the area of the part to which the lighting sheet 230 is fixed with respect to the screen 20 is large with respect to 2nd Embodiment, the lighting sheet 230 can be fixed to the screen 20 more stably.
＜第４実施形態＞
　本実施形態のロールスクリーン３１０において保持手段３８０は、図７に示すように、固定手段７０と、補助シート３７１と、固定部３７２と、を有する。補助シート３７１は、採光シート３０のスクリーン２０と逆側の面、すなわち本実施形態では採光シート３０の後側の面に重ねて配置されている。補助シート３７１は、幅方向Ｙに長い細長の長方形状である。補助シート３７１の上下方向Ｚの寸法は、採光シート３０の上下方向Ｚの寸法よりも小さい。補助シート３７１の幅方向Ｙの寸法は、採光シート３０の幅方向Ｙの寸法よりも大きい。補助シート３７１の幅方向Ｙの両端部は、採光シート３０の幅方向両端よりも幅方向外側に突出して延びている。補助シート３７１は、採光シート３０の下端部を覆っている。補助シート３７１は、例えば、採光シート３０の後側の面と接触している。
なお、補助シート３７１と採光シート３０との間には隙間が設けられていてもよい。 <Fourth embodiment>
As shown in FIG. 7, the holding unit 380 in the roll screen 310 of the present embodiment includes a fixing unit 70, an auxiliary sheet 371, and a fixing unit 372. The auxiliary sheet 371 is disposed so as to overlap the surface of the daylighting sheet 30 opposite to the screen 20, that is, the rear side of the daylighting sheet 30 in this embodiment. The auxiliary sheet 371 has an elongated rectangular shape that is long in the width direction Y. The dimension in the vertical direction Z of the auxiliary sheet 371 is smaller than the dimension in the vertical direction Z of the daylighting sheet 30. The dimension in the width direction Y of the auxiliary sheet 371 is larger than the dimension in the width direction Y of the daylighting sheet 30. Both end portions in the width direction Y of the auxiliary sheet 371 extend so as to protrude outward in the width direction from both ends in the width direction of the daylighting sheet 30. The auxiliary sheet 371 covers the lower end portion of the daylighting sheet 30. For example, the auxiliary sheet 371 is in contact with the rear surface of the daylighting sheet 30.
Note that a gap may be provided between the auxiliary sheet 371 and the daylighting sheet 30.
　補助シート３７１は、スクリーン２０の面に直接的に固定されている。より詳細には、補助シート３７１は、幅方向Ｙの両端部が固定部３７２によってスクリーン２０に直接的に固定されている。固定部３７２は、幅方向Ｙにおいて採光シート３０を挟んでいる。固定部３７２は、補助シート３７１をスクリーン２０に固定できるならば特に限定されず、例えば、上述した固定手段７０と同様に選択できる。本実施形態において固定部３７２は、例えば、粘着テープである。固定部３７２と固定手段７０とは、同様の固定方法であってもよいし、異なる固定方法であってもよい。 The auxiliary sheet 371 is directly fixed to the surface of the screen 20. More specifically, both ends of the auxiliary sheet 371 in the width direction Y are directly fixed to the screen 20 by the fixing portions 372. The fixing portion 372 sandwiches the daylighting sheet 30 in the width direction Y. The fixing part 372 is not particularly limited as long as the auxiliary sheet 371 can be fixed to the screen 20. For example, the fixing part 372 can be selected in the same manner as the fixing unit 70 described above. In the present embodiment, the fixing portion 372 is, for example, an adhesive tape. The fixing portion 372 and the fixing means 70 may be the same fixing method or different fixing methods.
　補助シート３７１は、透光性を有する。補助シート３７１の材質は、透光性を有するならば特に限定されない。補助シート３７１は、繊維で構成された布であってもよいし、樹脂製のシートであってもよい。補助シート３７１の材質とスクリーン２０の材質とは同じであってもよいし、異なっていてもよい。ロールスクリーン３１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 The auxiliary sheet 371 has translucency. The material of the auxiliary sheet 371 is not particularly limited as long as it has translucency. The auxiliary sheet 371 may be a cloth made of fibers or a resin sheet. The material of the auxiliary sheet 371 and the material of the screen 20 may be the same or different. Other configurations of the roll screen 310 are the same as the configurations of the roll screen 10 of the first embodiment.
　本実施形態によれば、補助シート３７１によって採光シート３０を後側から押さえることができるため、採光シート３０をスクリーン２０に対して、より安定して保持することができる。また、補助シート３７１によって、採光シート３０をスクリーン２０の後面に沿って平面状に延ばした状態を保持することができる。そのため、採光シート３０が撓んで採光シート３０の光学特性が低下することを抑制できる。また、補助シート３７１は、スクリーン２０に直接的に固定されているため、採光シート３０を直接的にはスクリーン２０に固定しない。そのため、補助シート３７１によっては、採光シート３０のスクリーン２０に対する相対移動が阻害されにくい。これにより、上述した保持手段３８０の破損抑制効果が低下することを抑制できる。 According to this embodiment, since the daylighting sheet 30 can be pressed from the rear side by the auxiliary sheet 371, the daylighting sheet 30 can be held more stably with respect to the screen 20. Further, the auxiliary sheet 371 can maintain a state in which the daylighting sheet 30 extends in a planar shape along the rear surface of the screen 20. Therefore, it can suppress that the lighting sheet 30 bends and the optical characteristic of the lighting sheet 30 falls. Further, since the auxiliary sheet 371 is directly fixed to the screen 20, the daylighting sheet 30 is not directly fixed to the screen 20. Therefore, depending on the auxiliary sheet 371, the relative movement of the daylighting sheet 30 with respect to the screen 20 is difficult to be inhibited. Thereby, it can suppress that the damage suppression effect of the holding means 380 mentioned above falls.
　なお、補助シート３７１の上下方向Ｚの位置は、補助シート３７１が採光シート３０に重ねて配置されるならば、特に限定されない。補助シート３７１は、採光シート３０の上下方向Ｚの中央部と重なって配置されてもよいし、採光シート３０の上端部と重なって配置されてもよい。 Note that the position of the auxiliary sheet 371 in the vertical direction Z is not particularly limited as long as the auxiliary sheet 371 is disposed so as to overlap the daylighting sheet 30. The auxiliary sheet 371 may be disposed so as to overlap the central portion of the daylighting sheet 30 in the vertical direction Z, or may be disposed so as to overlap the upper end portion of the daylighting sheet 30.
＜第５実施形態＞
　本実施形態のロールスクリーン４１０において保持手段４８０は、図８に示すように、固定手段７０と、補助シート４７１と、を有する。補助シート４７１は、幅方向Ｙに長い長方形状である。補助シート４７１の上下方向Ｚの寸法は、採光シート３０の上下方向Ｚの寸法よりも大きい。補助シート４７１の幅方向Ｙの寸法は、採光シート３０の幅方向Ｙの寸法よりも大きい。補助シート４７１は、採光シート３０の後側の面の全体を覆っている。補助シート４７１の幅方向Ｙの両端部は、スクリーン２０の面に直接的に固定されている。補助シート４７１のその他の構成は、第４実施形態の補助シート３７１の構成と同様である。ロールスクリーン４１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 <Fifth Embodiment>
In the roll screen 410 of the present embodiment, the holding means 480 includes a fixing means 70 and an auxiliary sheet 471 as shown in FIG. The auxiliary sheet 471 has a rectangular shape that is long in the width direction Y. The dimension in the vertical direction Z of the auxiliary sheet 471 is larger than the dimension in the vertical direction Z of the daylighting sheet 30. The dimension in the width direction Y of the auxiliary sheet 471 is larger than the dimension in the width direction Y of the daylighting sheet 30. The auxiliary sheet 471 covers the entire rear surface of the daylighting sheet 30. Both ends of the auxiliary sheet 471 in the width direction Y are directly fixed to the surface of the screen 20. Other configurations of the auxiliary sheet 471 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment. The other configuration of the roll screen 410 is the same as the configuration of the roll screen 10 of the first embodiment.
　本実施形態によれば、補助シート４７１によって、採光シート３０の後側の面全体を押さえることができるため、採光シート３０をスクリーン２０に対して、より安定して保持することができる。また、補助シート４７１によって、採光シート３０全体をスクリーン２０の後面に沿って平面状に延ばした状態を保持することができる。 According to the present embodiment, since the auxiliary sheet 471 can hold the entire rear surface of the daylighting sheet 30, the daylighting sheet 30 can be more stably held on the screen 20. Further, the auxiliary sheet 471 can keep the entire daylighting sheet 30 flat along the rear surface of the screen 20.
＜第６実施形態＞
　本実施形態のロールスクリーン５１０において保持手段５８０は、図９に示すように、固定手段７０と、複数の補助シート５７１と、を有する。補助シート５７１は、幅方向Ｙに長い細長の長方形状である。図９では、複数の補助シート５７１は、３つ設けられている。３つの補助シート５７１は、上下方向Ｚに沿って互いに間隔を空けて並んで配置されている。３つの補助シート５７１は、等間隔に配置されている。補助シート５７１のその他の構成は、第４実施形態の補助シート３７１の構成と同様である。ロールスクリーン５１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 <Sixth Embodiment>
In the roll screen 510 of the present embodiment, the holding means 580 includes a fixing means 70 and a plurality of auxiliary sheets 571 as shown in FIG. The auxiliary sheet 571 has an elongated rectangular shape that is long in the width direction Y. In FIG. 9, three auxiliary sheets 571 are provided. The three auxiliary sheets 571 are arranged side by side along the vertical direction Z at intervals. The three auxiliary sheets 571 are arranged at equal intervals. Other configurations of the auxiliary sheet 571 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment. The other configuration of the roll screen 510 is the same as the configuration of the roll screen 10 of the first embodiment.
　本実施形態によれば、複数の補助シート５７１によって、採光シート３０の後側の面を押さえることができるため、採光シート３０をスクリーン２０に対して、より安定して保持することができる。また、補助シート５７１によって、採光シート３０をスクリーン２０の後面に沿って平面状に延ばした状態を保持することができる。 According to the present embodiment, since the rear surface of the daylighting sheet 30 can be pressed by the plurality of auxiliary sheets 571, the daylighting sheet 30 can be more stably held on the screen 20. Further, the auxiliary sheet 571 can maintain the state in which the daylighting sheet 30 is extended in a planar shape along the rear surface of the screen 20.
　なお、補助シート５７１の数は、２つであってもよいし、４つ以上であってもよい。また、複数の補助シート５７１は、互いに異なる間隔で配置されていてもよい。 The number of auxiliary sheets 571 may be two, or four or more. Further, the plurality of auxiliary sheets 571 may be arranged at different intervals.
＜第７実施形態＞
　本実施形態のロールスクリーン６１０において保持手段６８０は、図１０に示すように、固定手段７０と、複数の補助シート６７１と、固定部６７２と、を有する。補助シート６７１は、上下方向Ｚに長い細長の長方形状である。補助シート６７１の幅方向Ｙの寸法は、採光シート３０の幅方向Ｙの寸法よりも小さい。補助シート６７１の上下方向Ｚの寸法は、採光シート３０の上下方向Ｚの寸法よりも大きい。補助シート６７１の上下方向Ｚの両端部は、採光シート３０上下方向両端よりも上下方向Ｚの両側に突出して延びている。 <Seventh embodiment>
In the roll screen 610 of the present embodiment, the holding means 680 includes a fixing means 70, a plurality of auxiliary sheets 671, and a fixing portion 672, as shown in FIG. The auxiliary sheet 671 has an elongated rectangular shape that is long in the vertical direction Z. The dimension in the width direction Y of the auxiliary sheet 671 is smaller than the dimension in the width direction Y of the daylighting sheet 30. The dimension in the vertical direction Z of the auxiliary sheet 671 is larger than the dimension in the vertical direction Z of the daylighting sheet 30. Both ends of the auxiliary sheet 671 in the up-down direction Z protrude and extend on both sides in the up-down direction Z from both ends of the daylighting sheet 30 in the up-down direction.
　補助シート６７１は、スクリーン２０の面に直接的に固定されている。より詳細には、補助シート６７１は、上下方向Ｚの両端部が固定部６７２によってスクリーン２０に直接的に固定されている。固定部６７２は、上下方向Ｚにおいて採光シート３０を挟んでいる。固定部６７２のその他の構成は、第４実施形態の固定部３７２の構成と同様である。 The auxiliary sheet 671 is directly fixed to the surface of the screen 20. More specifically, both ends of the auxiliary sheet 671 in the vertical direction Z are directly fixed to the screen 20 by the fixing portions 672. The fixing portion 672 sandwiches the daylighting sheet 30 in the vertical direction Z. Other configurations of the fixing portion 672 are the same as the configurations of the fixing portion 372 of the fourth embodiment.
　図１０では、複数の補助シート６７１は、２つ設けられている。２つの補助シート６７１は、採光シート３０の幅方向Ｙの両端部をそれぞれ覆っている。補助シート６７１のその他の構成は、第４実施形態の補助シート３７１の構成と同様である。ロールスクリーン６１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 In FIG. 10, two auxiliary sheets 671 are provided. The two auxiliary sheets 671 cover both ends of the daylighting sheet 30 in the width direction Y, respectively. Other configurations of the auxiliary sheet 671 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment. Other configurations of the roll screen 610 are the same as the configurations of the roll screen 10 of the first embodiment.
　本実施形態によれば、補助シート６７１の固定部６７２が、採光シート３０を上下方向Ｚに挟んで配置されているため、例えば固定手段７０が破損した場合であっても、補助シート６７１によって採光シート３０が落下することを抑制できる。 According to this embodiment, since the fixing portion 672 of the auxiliary sheet 671 is disposed with the daylighting sheet 30 sandwiched in the vertical direction Z, for example, even if the fixing means 70 is damaged, the daylighting is performed by the auxiliary sheet 671. It can control that sheet 30 falls.
　なお、２つの補助シート６７１の幅方向Ｙの位置は、補助シート６７１が採光シート３０と重ねて配置されるならば特に限定されない。また、２つの補助シート６７１は、いずれか一方だけが設けられていてもよい。また、補助シート６７１は、３つ以上設けられていてもよい。その場合、複数の補助シート６７１は、幅方向Ｙに等間隔に並んで配置されてもよいし、互いに異なる間隔で配置されてもよい。 The position in the width direction Y of the two auxiliary sheets 671 is not particularly limited as long as the auxiliary sheet 671 is disposed so as to overlap the daylighting sheet 30. Further, only one of the two auxiliary sheets 671 may be provided. Further, three or more auxiliary sheets 671 may be provided. In that case, the plurality of auxiliary sheets 671 may be arranged at equal intervals in the width direction Y, or may be arranged at different intervals.
＜第８実施形態＞
　本実施形態のロールスクリーン７１０において保持手段７８０は、図１１に示すように、固定手段７０と、一対の補助シート７７１と、固定部７７２と、を有する。一対の補助シート７７１は、厚み方向Ｘと直交し、かつ、上下方向Ｚに対して傾いた方向に長い細長の長方形状である。補助シート７７１は、幅方向内側に向かうに従って下側に位置する方向に延びている。一対の補助シート７７１は、採光シート３０の幅方向Ｙの両端部に配置され、採光シート３０の下側の角部を押さえている。一対の補助シート７７１は、採光シート３０の幅方向Ｙの中心を通り上下方向Ｚに延びる仮想線に対して、線対称に配置されている。一対の補助シート７７１同士の間の幅方向Ｙの距離は、上側から下側に向かうに従って小さくなる。 <Eighth Embodiment>
In the roll screen 710 of the present embodiment, the holding means 780 includes a fixing means 70, a pair of auxiliary sheets 771, and a fixing portion 772, as shown in FIG. The pair of auxiliary sheets 771 has an elongated rectangular shape that is orthogonal to the thickness direction X and is long in a direction inclined with respect to the vertical direction Z. The auxiliary sheet 771 extends in a direction positioned on the lower side toward the inner side in the width direction. The pair of auxiliary sheets 771 are disposed at both ends of the daylighting sheet 30 in the width direction Y, and press the lower corners of the daylighting sheet 30. The pair of auxiliary sheets 771 are arranged symmetrically with respect to an imaginary line that passes through the center in the width direction Y of the daylighting sheet 30 and extends in the vertical direction Z. The distance in the width direction Y between the pair of auxiliary sheets 771 decreases from the upper side toward the lower side.
　補助シート７７１の長手方向の両端部は、固定部７７２によってスクリーン２０に直接的に固定されている。補助シート７７１の下側の端部を固定する固定部７７２は、採光シート３０の下側に配置されている。補助シート７７１の上側の端部を固定する固定部７７２は、採光シート３０の幅方向外側に配置されている。 Both end portions of the auxiliary sheet 771 in the longitudinal direction are directly fixed to the screen 20 by fixing portions 772. A fixing portion 772 for fixing the lower end portion of the auxiliary sheet 771 is disposed on the lower side of the daylighting sheet 30. The fixing portion 772 that fixes the upper end portion of the auxiliary sheet 771 is disposed on the outer side in the width direction of the daylighting sheet 30.
　固定部７７２のその他の構成は、第４実施形態の固定部３７２の構成と同様である。補助シート７７１のその他の構成は、第４実施形態の補助シート３７１の構成と同様である。ロールスクリーン７１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 Other configurations of the fixing unit 772 are the same as the configuration of the fixing unit 372 of the fourth embodiment. Other configurations of the auxiliary sheet 771 are the same as the configurations of the auxiliary sheet 371 of the fourth embodiment. The other configuration of the roll screen 710 is the same as the configuration of the roll screen 10 of the first embodiment.
　本実施形態によれば、補助シート７７１の固定部７７２が、採光シート３０の下側と採光シート３０の幅方向外側とに配置されている。そのため、例えば固定手段７０が破損した場合であっても、補助シート７７１によって採光シート３０が落下することを抑制できる。また、採光シート３０の位置が幅方向Ｙにずれることを抑制できる。 According to this embodiment, the fixing portion 772 of the auxiliary sheet 771 is disposed on the lower side of the daylighting sheet 30 and on the outer side in the width direction of the daylighting sheet 30. Therefore, for example, even if the fixing means 70 is damaged, the daylighting sheet 30 can be prevented from falling by the auxiliary sheet 771. Moreover, it can suppress that the position of the daylighting sheet 30 shifts in the width direction Y.
＜第９実施形態＞
　本実施形態のロールスクリーン８１０において保持手段８８０は、図１２に示すように、収納部８９０を有する。本実施形態の保持手段８８０は、上述した各実施形態と異なり、採光シート８３０の一部をスクリーン２０に直接的に固定する固定手段を有していない。収納部８９０は、スクリーン２０に設けられた袋状である。収納部８９０は、透光性を有する。本実施形態において収納部８９０は、収納シート８９１と、固定部８７２と、収納シート８９１と厚み方向Ｘに重なるスクリーン２０の一部と、を有する。 <Ninth Embodiment>
In the roll screen 810 of the present embodiment, the holding means 880 has a storage portion 890 as shown in FIG. Unlike the embodiments described above, the holding unit 880 of this embodiment does not have a fixing unit that directly fixes a part of the daylighting sheet 830 to the screen 20. The storage unit 890 has a bag shape provided on the screen 20. The storage unit 890 has translucency. In the present embodiment, the storage unit 890 includes a storage sheet 891, a fixing unit 872, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
　収納シート８９１は、幅方向Ｙに長い長方形状である。収納シート８９１の幅方向Ｙの寸法は、採光シート８３０の幅方向Ｙの寸法よりも大きい。収納シート８９１の上下方向Ｚの寸法は、採光シート８３０の上下方向Ｚの寸法よりも大きい。収納シート８９１は、採光シート８３０の後側に配置され、採光シート８３０の後面全体を覆っている。収納シート８９１の外縁は固定部８７２によってスクリーン２０に直接的に固定されている。 The storage sheet 891 has a rectangular shape that is long in the width direction Y. The dimension in the width direction Y of the storage sheet 891 is larger than the dimension in the width direction Y of the daylighting sheet 830. The dimension in the vertical direction Z of the storage sheet 891 is larger than the dimension in the vertical direction Z of the daylighting sheet 830. The storage sheet 891 is disposed on the rear side of the daylighting sheet 830 and covers the entire rear surface of the daylighting sheet 830. The outer edge of the storage sheet 891 is directly fixed to the screen 20 by a fixing portion 872.
　収納シート８９１は、透光性を有する。収納シート８９１の材質は、透光性を有するならば特に限定されない。収納シート８９１は、繊維で構成された布であってもよいし、樹脂製のシートであってもよい。収納シート８９１の材質とスクリーン２０の材質とは同じであってもよいし、異なっていてもよい。 The storage sheet 891 has translucency. The material of the storage sheet 891 is not particularly limited as long as it has translucency. The storage sheet 891 may be a cloth made of fibers or a resin sheet. The material of the storage sheet 891 and the material of the screen 20 may be the same or different.
　固定部８７２は、矩形環状である。固定部８７２は、厚み方向Ｘに沿って視て、採光シート８３０を囲んでいる。固定部８７２は、収納シート８９１をスクリーン２０に固定できるならば特に限定されず、例えば、上述した固定手段７０と同様に選択できる。本実施形態において固定部８７２は、例えば、粘着テープである。固定部８７２と固定手段７０とは、同様の固定方法であってもよいし、異なる固定方法であってもよい。 The fixing portion 872 has a rectangular ring shape. The fixing portion 872 surrounds the daylighting sheet 830 when viewed along the thickness direction X. The fixing portion 872 is not particularly limited as long as the storage sheet 891 can be fixed to the screen 20. For example, the fixing portion 872 can be selected similarly to the fixing means 70 described above. In the present embodiment, the fixing portion 872 is, for example, an adhesive tape. The fixing portion 872 and the fixing means 70 may be the same fixing method or different fixing methods.
　図１３に示すように、収納部８９０は、収納シート８９１がスクリーン２０に固定されることで、収納シート８９１および収納シート８９１と厚み方向Ｘに重なるスクリーン２０の一部によって袋状に構成されている。収納部８９０は、収納シート８９１とスクリーン２０との厚み方向Ｘの間に配置された収納空間８９０ａを有する。本実施形態において収納空間８９０ａは、閉じた空間である。 As shown in FIG. 13, the storage portion 890 is configured in a bag shape by the storage sheet 891 being fixed to the screen 20, so that the storage sheet 891 and a part of the screen 20 overlapping the storage sheet 891 in the thickness direction X are formed. Yes. The storage unit 890 has a storage space 890 a disposed between the storage sheet 891 and the screen 20 in the thickness direction X. In the present embodiment, the storage space 890a is a closed space.
　採光シート８３０は、収納部８９０に収納されている。より詳細には、採光シート８３０は、収納空間８９０ａ内に配置され、スクリーン２０上に保持されている。本実施形態において保持手段８８０は採光シート８３０の一部をスクリーン２０に直接的に固定する固定手段を有していないため、本実施形態では、採光シート８３０全体が、非固定部８３０ａである。なお、図１３では、採光シート８３０全体が収納部８９０と接触していないように図示しているが、採光シート８３０の一部は、収納部８９０と接触して、保持されている。採光シート８３０の前面は、スクリーン２０の後面と接触していてもよい。採光シート８３０は、収納空間８９０ａ内において移動可能である。 The daylighting sheet 830 is stored in the storage unit 890. More specifically, the daylighting sheet 830 is disposed in the storage space 890 a and is held on the screen 20. In the present embodiment, since the holding means 880 does not have a fixing means for directly fixing a part of the daylighting sheet 830 to the screen 20, in this embodiment, the entire daylighting sheet 830 is the non-fixed portion 830a. In FIG. 13, the entire daylighting sheet 830 is illustrated so as not to be in contact with the storage unit 890, but a part of the daylighting sheet 830 is held in contact with the storage unit 890. The front surface of the daylighting sheet 830 may be in contact with the rear surface of the screen 20. The daylighting sheet 830 is movable in the storage space 890a.
　採光シート８３０は、基材シート５０、光学機能層６０および光学シート８３１を有する。光学シート８３１は、基材シート５０と重ねて配置されている。より詳細には、光学シート８３１は、基材シート５０の光学機能層６０と逆側、すなわち前側の面に固定されている。光学シート８３１の形状は、例えば、基材シート５０の形状と同じである。光学シート８３１は、光学機能層６０と異なる光学特性を有する。本実施形態において光学シート８３１は、光拡散性を有する光拡散部として機能する。光学シート８３１には、採光部６１から射出された光Ｌ１が入射される。光学シート８３１に入射された光Ｌ１は、拡散されてスクリーン２０を透過する。 The daylighting sheet 830 includes a base sheet 50, an optical function layer 60, and an optical sheet 831. The optical sheet 831 is disposed so as to overlap the base sheet 50. More specifically, the optical sheet 831 is fixed to the surface opposite to the optical functional layer 60 of the base sheet 50, that is, the front surface. The shape of the optical sheet 831 is the same as the shape of the base material sheet 50, for example. The optical sheet 831 has optical characteristics different from those of the optical functional layer 60. In the present embodiment, the optical sheet 831 functions as a light diffusing portion having light diffusibility. The light L <b> 1 emitted from the daylighting unit 61 is incident on the optical sheet 831. The light L1 incident on the optical sheet 831 is diffused and transmitted through the screen 20.
　採光シート８３０のその他の構成は、第１実施形態の採光シート３０の構成と同様である。ロールスクリーン８１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 Other configurations of the daylighting sheet 830 are the same as those of the daylighting sheet 30 of the first embodiment. The other configuration of the roll screen 810 is the same as the configuration of the roll screen 10 of the first embodiment.
　本実施形態によれば、採光シート８３０の全体を非固定部８３０ａとしつつ、収納部８９０によって採光シート８３０をスクリーン２０に保持することができる。そのため、採光シート８３０が熱変形しても、採光シート８３０とスクリーン２０との間に応力が生じず、保持手段８８０が破損することをより抑制できる。また、採光シート８３０およびスクリーン２０が、互いの熱変形量の差によって反ることをより抑制できる。 According to the present embodiment, the daylighting sheet 830 can be held on the screen 20 by the storage portion 890 while the entire daylighting sheet 830 is the non-fixed portion 830a. Therefore, even if the daylighting sheet 830 is thermally deformed, stress is not generated between the daylighting sheet 830 and the screen 20, and the holding unit 880 can be further prevented from being damaged. Moreover, it can suppress more that the lighting sheet | seat 830 and the screen 20 warp by the difference in mutual heat deformation amount.
　また、本実施形態によれば、採光シート８３０が収納される収納空間８９０ａが閉じられた空間であるため、採光シート８３０が収納空間８９０ａ内から抜け出ることを抑制できる。 Moreover, according to this embodiment, since the storage space 890a in which the daylighting sheet 830 is stored is a closed space, the daylighting sheet 830 can be prevented from coming out of the storage space 890a.
　また、本実施形態によれば、採光シート８３０は、光学機能層６０と異なる光学特性を有する光学シート８３１を有する。そのため、採光シート８３０に複数の光学特性を付与することができる。本実施形態では、光学シート８３１は、光拡散部として機能するため、採光シート８３０から射出される光を拡散させることができる。これにより、天井面のより広い範囲に光Ｌ１を照射することができ、部屋Ｒ内をより明るくすることができる。
また、光Ｌ１を拡散させることができるため、窓ＷＤから入射される光Ｌ１の光量が大きい場合であっても、人Ｍが眩しく感じることを抑制できる。 Further, according to the present embodiment, the daylighting sheet 830 includes the optical sheet 831 having optical characteristics different from those of the optical functional layer 60. Therefore, a plurality of optical characteristics can be imparted to the daylighting sheet 830. In the present embodiment, since the optical sheet 831 functions as a light diffusing unit, the light emitted from the daylighting sheet 830 can be diffused. Thereby, the light L1 can be irradiated to a wider range of the ceiling surface, and the interior of the room R can be brightened.
In addition, since the light L1 can be diffused, the person M can be prevented from feeling dazzling even when the amount of the light L1 incident from the window WD is large.
　なお、光学シート８３１の光学特性は、光拡散性に限られず、他の光学特性を有していてもよい。光学シート８３１は、例えば、紫外線を遮断する機能を有していてもよいし、赤外線を遮断する機能を有していてもよい。また、光学シート８３１の代わりに、デザインシートを設ける構成にしてもよい。例えば、デザインシートを幅方向Ｙに延びるストライプ柄とすることで、スクリーン２０に皺が生じた場合であっても、皺を目立たなくすることができる。 Note that the optical characteristics of the optical sheet 831 are not limited to light diffusibility, and may have other optical characteristics. The optical sheet 831 may have a function of blocking ultraviolet rays or a function of blocking infrared rays, for example. Further, a design sheet may be provided instead of the optical sheet 831. For example, when the design sheet is a stripe pattern extending in the width direction Y, the wrinkles can be made inconspicuous even when wrinkles occur on the screen 20.
＜第１０実施形態＞
　本実施形態のロールスクリーン９１０において保持手段９８０は、図１４に示すように、収納部９９０を有する。本実施形態において収納部９９０は、収納シート８９１と、固定部９７２と、収納シート８９１と厚み方向Ｘに重なるスクリーン２０の一部と、によって構成されている。 <Tenth Embodiment>
In the roll screen 910 of the present embodiment, the holding means 980 includes a storage portion 990 as shown in FIG. In the present embodiment, the storage unit 990 includes a storage sheet 891, a fixing unit 972, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
　固定部９７２は、収納シート８９１の外縁のうち、下側の縁と、幅方向両側の縁とをスクリーン２０に直接的に固定している。固定部９７２は、第９実施形態の固定部８７２に対して、収納シート８９１の上側の縁を固定していない点が異なる。固定部９７２のその他の構成は、第９実施形態の固定部８７２の構成と同様である。収納空間９９０ａは、上側に開口している。ロールスクリーン９１０のその他の構成は、第９実施形態のロールスクリーン８１０の構成と同様である。 The fixing portion 972 directly fixes the lower edge and the edges on both sides in the width direction among the outer edges of the storage sheet 891 directly to the screen 20. The fixing part 972 is different from the fixing part 872 of the ninth embodiment in that the upper edge of the storage sheet 891 is not fixed. Other configurations of the fixing portion 972 are the same as the configurations of the fixing portion 872 of the ninth embodiment. The storage space 990a opens upward. The other configuration of the roll screen 910 is the same as the configuration of the roll screen 810 of the ninth embodiment.
　本実施形態によれば、収納空間９９０ａが上側に開口しているため、収納空間９９０ａの開口を介して、収納部９９０に対して採光シート８３０を自在に出し入れ可能である。
これにより、採光シート８３０の設置および交換等を容易にできる。 According to the present embodiment, since the storage space 990a is opened upward, the daylighting sheet 830 can be freely put in and out of the storage portion 990 through the opening of the storage space 990a.
Thereby, installation and replacement of the daylighting sheet 830 can be facilitated.
＜第１１実施形態＞
　本実施形態のロールスクリーン１０１０において保持手段１０８０は、図１５に示すように、収納部１０９０を有する。本実施形態において収納部１０９０は、収納シート８９１と、２つの固定部１０７２と、収納シート８９１と厚み方向Ｘに重なるスクリーン２０の一部と、によって構成されている。 <Eleventh embodiment>
In the roll screen 1010 of the present embodiment, the holding means 1080 has a storage portion 1090 as shown in FIG. In the present embodiment, the storage unit 1090 includes a storage sheet 891, two fixing units 1072, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
　２つの固定部１０７２は、収納シート８９１の上側の縁と、収納シート８９１の下側の縁とをスクリーン２０に直接的に固定している。２つの固定部１０７２は、第９実施形態の固定部８７２に対して、収納シート８９１の幅方向両側の縁を固定していない点が異なる。固定部１０７２のその他の構成は、第９実施形態の固定部８７２の構成と同様である。収納空間１０９０ａは、幅方向両側に開口している。ロールスクリーン１０１０のその他の構成は、第９実施形態のロールスクリーン８１０の構成と同様である。 The two fixing portions 1072 directly fix the upper edge of the storage sheet 891 and the lower edge of the storage sheet 891 to the screen 20. The two fixing portions 1072 are different from the fixing portion 872 of the ninth embodiment in that the edges on both sides in the width direction of the storage sheet 891 are not fixed. Other configurations of the fixing unit 1072 are the same as the configurations of the fixing unit 872 of the ninth embodiment. The storage space 1090a is open on both sides in the width direction. The other configuration of the roll screen 1010 is the same as the configuration of the roll screen 810 of the ninth embodiment.
　本実施形態によれば、収納空間１０９０ａが幅方向両側に開口しているため、収納空間１０９０ａの幅方向両側の開口のいずれを介しても、収納部１０９０に対して採光シート８３０を自在に出し入れ可能である。これにより、採光シート８３０の設置および交換等をより容易にできる。 According to the present embodiment, since the storage space 1090a is open on both sides in the width direction, the daylighting sheet 830 can be freely put in and out of the storage portion 1090 through any of the openings on both sides in the width direction of the storage space 1090a. Is possible. Thereby, installation and replacement of the daylighting sheet 830 can be made easier.
＜第１２実施形態＞
　本実施形態のロールスクリーン１１１０において保持手段１１８０は、図１６に示すように、収納部１１９０を有する。本実施形態において収納部１１９０は、収納シート８９１と、複数の固定部１１７２と、収納シート８９１と厚み方向Ｘに重なるスクリーン２０の一部と、によって構成されている。 <Twelfth embodiment>
In the roll screen 1110 of this embodiment, the holding means 1180 includes a storage portion 1190 as shown in FIG. In this embodiment, the storage unit 1190 includes a storage sheet 891, a plurality of fixing units 1172, and a part of the screen 20 that overlaps the storage sheet 891 in the thickness direction X.
　複数の固定部１１７２は、収納シート８９１の上側の縁の一部と、収納シート８９１の下側の縁の一部とをスクリーン２０に直接的に固定している。図１６では、収納シート８９１の上側の縁を固定する３つの固定部１１７２と、収納シート８９１の下側の縁を固定する３つの固定部１１７２との合計６つの固定部１１７２が設けられている。 The plurality of fixing portions 1172 directly fix a part of the upper edge of the storage sheet 891 and a part of the lower edge of the storage sheet 891 directly to the screen 20. In FIG. 16, a total of six fixing portions 1172 are provided, including three fixing portions 1172 that fix the upper edge of the storage sheet 891 and three fixing portions 1172 that fix the lower edge of the storage sheet 891. .
　収納シート８９１の上側の縁を固定する３つの固定部１１７２は、収納シート８９１の上側の縁のうち、幅方向Ｙの中央部分と、幅方向Ｙの両端部分と、を固定している。収納シート８９１の下側の縁を固定する３つの固定部１１７２は、収納シート８９１の下側の縁のうち、幅方向Ｙの中央部分と、幅方向Ｙの両端部分と、を固定している。固定部１１７２のその他の構成は、第１１実施形態の固定部１０７２の構成と同様である。収納空間１１９０ａは、幅方向両側および上下方向両側に開口している。ロールスクリーン１１１０のその他の構成は、第９実施形態のロールスクリーン８１０の構成と同様である。 The three fixing portions 1172 that fix the upper edge of the storage sheet 891 fix the central portion in the width direction Y and both end portions in the width direction Y of the upper edge of the storage sheet 891. The three fixing portions 1172 that fix the lower edge of the storage sheet 891 fix the central portion in the width direction Y and both end portions in the width direction Y of the lower edge of the storage sheet 891. . Other configurations of the fixing portion 1172 are the same as the configurations of the fixing portion 1072 of the eleventh embodiment. The storage space 1190a is open on both sides in the width direction and both sides in the vertical direction. Other configurations of the roll screen 1110 are the same as those of the roll screen 810 of the ninth embodiment.
　本実施形態によれば、収納シート８９１をスクリーン２０に固定する固定部１１７２の面積を小さくできるため、収納シート８９１をスクリーン２０に固定することが容易である。 According to this embodiment, since the area of the fixing portion 1172 for fixing the storage sheet 891 to the screen 20 can be reduced, it is easy to fix the storage sheet 891 to the screen 20.
＜第１３実施形態＞
　本実施形態のロールスクリーン１２１０において保持手段１２８０は、図１７に示すように、保持シート１２９２と、固定部１２７２と、を有する。保持シート１２９２は、採光シート８３０のスクリーン２０と逆側の面、すなわち本実施形態では採光シート８３０の後側の面に重ねて配置されている。保持シート１２９２は、上下方向Ｚに長い長方形状である。保持シート１２９２の幅方向Ｙの寸法は、採光シート８３０の幅方向Ｙの寸法よりも小さい。保持シート１２９２の上下方向Ｚの寸法は、採光シート８３０の上下方向Ｚの寸法よりも大きい。保持シート１２９２の上下方向Ｚの両端部は、採光シート８３０幅方向両端よりも上下方向Ｚの両側に突出して延びている。 <13th Embodiment>
In the roll screen 1210 of the present embodiment, the holding means 1280 includes a holding sheet 1292 and a fixing portion 1272 as shown in FIG. The holding sheet 1292 is disposed so as to overlap the surface of the daylighting sheet 830 opposite to the screen 20, that is, the rear side of the daylighting sheet 830 in this embodiment. The holding sheet 1292 has a rectangular shape that is long in the vertical direction Z. The dimension in the width direction Y of the holding sheet 1292 is smaller than the dimension in the width direction Y of the daylighting sheet 830. The dimension of the holding sheet 1292 in the vertical direction Z is larger than the dimension of the lighting sheet 830 in the vertical direction Z. Both end portions in the up-down direction Z of the holding sheet 1292 protrude and extend on both sides in the up-down direction Z from both ends in the width direction of the daylighting sheet 830.
　本実施形態において保持シート１２９２は、複数設けられている。図１７では、保持シート１２９２は、例えば、４つ設けられている。４つの保持シート１２９２は、幅方向Ｙに沿って互いに間隔を空けて等間隔に並んでいる。保持シート１２９２は、例えば、採光シート８３０の後側の面と接触している。なお、保持シート１２９２と採光シート８３０との間には隙間が設けられていてもよい。採光シート８３０は、複数の保持シート１２９２によって保持されている。 In the present embodiment, a plurality of holding sheets 1292 are provided. In FIG. 17, for example, four holding sheets 1292 are provided. The four holding sheets 1292 are arranged at equal intervals along the width direction Y at intervals. The holding sheet 1292 is in contact with the rear surface of the daylighting sheet 830, for example. Note that a gap may be provided between the holding sheet 1292 and the daylighting sheet 830. The daylighting sheet 830 is held by a plurality of holding sheets 1292.
　保持シート１２９２は、スクリーン２０の面に直接的に固定されている。より詳細には、保持シート１２９２は、上下方向Ｚの両端部が固定部１２７２によってスクリーン２０に直接的に固定されている。固定部１２７２は、上下方向Ｚにおいて採光シート３０を挟んでいる。固定部１２７２は、保持シート１２９２をスクリーン２０に固定できるならば特に限定されず、例えば、上述した固定手段７０と同様に選択できる。本実施形態において固定部１２７２は、例えば、粘着テープである。固定部１２７２と固定手段７０とは、同様の固定方法であってもよいし、異なる固定方法であってもよい。 The holding sheet 1292 is directly fixed to the surface of the screen 20. More specifically, the holding sheet 1292 is directly fixed to the screen 20 by fixing portions 1272 at both ends in the vertical direction Z. The fixing portion 1272 sandwiches the daylighting sheet 30 in the vertical direction Z. The fixing unit 1272 is not particularly limited as long as the holding sheet 1292 can be fixed to the screen 20. For example, the fixing unit 1272 can be selected in the same manner as the fixing unit 70 described above. In the present embodiment, the fixing portion 1272 is, for example, an adhesive tape. The fixing part 1272 and the fixing means 70 may be the same fixing method or different fixing methods.
　保持シート１２９２は、透光性を有する。保持シート１２９２の材質は、透光性を有するならば特に限定されない。保持シート１２９２は、繊維で構成された布であってもよいし、樹脂製のシートであってもよい。保持シート１２９２の材質とスクリーン２０の材質とは同じであってもよいし、異なっていてもよい。ロールスクリーン１２１０のその他の構成は、第９実施形態のロールスクリーン８１０の構成と同様である。 The holding sheet 1292 has translucency. The material of the holding sheet 1292 is not particularly limited as long as it has translucency. The holding sheet 1292 may be a cloth made of fibers or a resin sheet. The material of the holding sheet 1292 and the material of the screen 20 may be the same or different. The other configuration of the roll screen 1210 is the same as the configuration of the roll screen 810 of the ninth embodiment.
　本実施形態によれば、保持シート１２９２によって採光シート８３０を保持することで、第９実施形態から第１２実施形態と同様に、採光シート８３０の全体を非固定部８３０ａとして、採光シート８３０をスクリーン２０上に保持できる。そのため、採光シート８３０が熱変形しても、採光シート８３０とスクリーン２０との間に応力が生じず、保持手段１２８０が破損することをより抑制できる。また、採光シート８３０およびスクリーン２０が、互いの熱変形量の差によって反ることをより抑制できる。 According to the present embodiment, the daylighting sheet 830 is held by the holding sheet 1292, so that the daylighting sheet 830 is the screen as the non-fixed portion 830 a as in the ninth to twelfth embodiments. 20 can be retained. Therefore, even if the daylighting sheet 830 is thermally deformed, no stress is generated between the daylighting sheet 830 and the screen 20, and the damage of the holding unit 1280 can be further suppressed. Moreover, it can suppress more that the lighting sheet | seat 830 and the screen 20 warp by the difference in mutual heat deformation amount.
　また、本実施形態によれば、第９実施形態から第１２実施形態のように袋状の収納部を形成する場合に比べて、保持手段１２８０を構成するために用いるシート材（保持シート１２９２）の量を少なくできる。 In addition, according to the present embodiment, the sheet material (holding sheet 1292) used for configuring the holding means 1280 as compared with the case where the bag-shaped storage portion is formed as in the ninth to twelfth embodiments. The amount of can be reduced.
＜第１４実施形態＞
　本実施形態のロールスクリーン１３１０において保持手段１３８０は、図１８に示すように、一対の上側保持シート１３９２と、一対の下側保持シート１３９３と、固定部１３７２と、を有する。上側保持シート１３９２および下側保持シート１３９３は、厚み方向Ｘと直交し、かつ、上下方向Ｚに対して傾いた方向に長い細長の長方形状である。 <Fourteenth embodiment>
In the roll screen 1310 of this embodiment, the holding unit 1380 includes a pair of upper holding sheets 1392, a pair of lower holding sheets 1393, and a fixing portion 1372 as shown in FIG. The upper holding sheet 1392 and the lower holding sheet 1393 have an elongated rectangular shape that is orthogonal to the thickness direction X and is long in a direction inclined with respect to the vertical direction Z.
　一対の上側保持シート１３９２は、採光シート８３０の上側の角部を保持する。一対の上側保持シート１３９２は、幅方向内側に向かうに従って上側に位置する方向に延びている。一対の上側保持シート１３９２は、採光シート８３０の幅方向Ｙの中心を通り上下方向Ｚに延びる仮想線に対して、線対称に配置されている。 The pair of upper holding sheets 1392 hold the upper corners of the daylighting sheet 830. The pair of upper holding sheets 1392 extends in a direction positioned on the upper side as going inward in the width direction. The pair of upper holding sheets 1392 are arranged symmetrically with respect to an imaginary line that extends in the vertical direction Z through the center of the daylighting sheet 830 in the width direction Y.
　一対の下側保持シート１３９３は、採光シート８３０の下側の角部を保持する。すなわち、本実施形態において採光シート８３０は、一対の上側保持シート１３９２および一対の下側保持シート１３９３によって、４つの角部が保持されている。一対の下側保持シート１３９３は、幅方向内側に向かうに従って下側に位置する方向に延びている。一対の下側保持シート１３９３は、採光シート８３０の幅方向Ｙの中心を通り上下方向Ｚに延びる仮想線に対して、線対称に配置されている。 The pair of lower holding sheets 1393 hold the lower corners of the daylighting sheet 830. That is, in the present embodiment, the lighting sheet 830 has four corners held by the pair of upper holding sheets 1392 and the pair of lower holding sheets 1393. The pair of lower holding sheets 1393 extend in a direction positioned on the lower side as going inward in the width direction. The pair of lower holding sheets 1393 are arranged symmetrically with respect to an imaginary line that passes through the center in the width direction Y of the daylighting sheet 830 and extends in the vertical direction Z.
　上側保持シート１３９２の長手方向の両端部は、固定部１３７２によってスクリーン２０に直接的に固定されている。上側保持シート１３９２における上側の端部を固定する固定部１３７２は、採光シート８３０の上側に配置されている。上側保持シート１３９２における下側の端部を固定する固定部１３７２は、採光シート８３０の幅方向外側に配置されている。 Both end portions of the upper holding sheet 1392 in the longitudinal direction are directly fixed to the screen 20 by fixing portions 1372. A fixing portion 1372 that fixes an upper end portion of the upper holding sheet 1392 is disposed on the upper side of the daylighting sheet 830. A fixing portion 1372 for fixing the lower end portion of the upper holding sheet 1392 is disposed on the outer side in the width direction of the daylighting sheet 830.
　下側保持シート１３９３の長手方向の両端部は、固定部１３７２によってスクリーン２０に直接的に固定されている。下側保持シート１３９３における上側の端部を固定する固定部１３７２は、採光シート８３０の幅方向外側に配置されている。下側保持シート１３９３における下側の端部を固定する固定部１３７２は、採光シート８３０の下側に配置されている。 Both ends in the longitudinal direction of the lower holding sheet 1393 are directly fixed to the screen 20 by fixing portions 1372. The fixing portion 1372 that fixes the upper end portion of the lower holding sheet 1393 is disposed on the outer side in the width direction of the daylighting sheet 830. A fixing portion 1372 that fixes the lower end portion of the lower holding sheet 1393 is disposed below the daylighting sheet 830.
　固定部１３７２のその他の構成は、第１３実施形態の固定部１２７２の構成と同様である。上側保持シート１３９２および下側保持シート１３９３のその他の構成は、第１３実施形態の保持シート１２９２の構成と同様である。ロールスクリーン１３１０のその他の構成は、第１３実施形態のロールスクリーン１２１０の構成と同様である。 Other configurations of the fixing unit 1372 are the same as the configuration of the fixing unit 1272 of the thirteenth embodiment. Other configurations of the upper holding sheet 1392 and the lower holding sheet 1393 are the same as the configuration of the holding sheet 1292 of the thirteenth embodiment. Other configurations of the roll screen 1310 are the same as the configurations of the roll screen 1210 of the thirteenth embodiment.
　本実施形態によれば、第１３実施形態と同様に、袋状の収納部を形成する場合に比べて、保持手段１３８０を構成するために用いるシート材（上側保持シート１３９２および下側保持シート１３９３）の量を少なくできる。また、採光シート８３０上下方向両側および幅方向両側に固定部１３７２が設けられているため、採光シート８３０が幅方向Ｙおよび上下方向Ｚに動いてスクリーン２０上から外れることを抑制できる。 According to the present embodiment, as in the thirteenth embodiment, the sheet materials (upper holding sheet 1392 and lower holding sheet 1393 used for configuring the holding means 1380 are compared with the case of forming a bag-shaped storage portion. ) Can be reduced. Moreover, since the fixing parts 1372 are provided on both sides in the vertical direction and both sides in the width direction of the daylighting sheet 830, the daylighting sheet 830 can be prevented from moving in the width direction Y and the vertical direction Z and coming off from the screen 20.
＜第１５実施形態＞
　本実施形態のロールスクリーン１４１０において保持手段１４８０は、図１９に示すように、収納部１４９０を有する。収納部１４９０の形状は、例えば、第９実施形態の収納部８９０の形状と同様である。本実施形態において収納部１４９０の収納シート（被覆部）１４９１は、繊維で構成された布である。収納シート１４９１は、複数の縦繊維１４９１ａと、複数の横繊維１４９１ｂと、が格子状に編まれて構成されている。本実施形態の収納シート１４９１は、採光シートを覆う被覆部に相当する。 <Fifteenth embodiment>
In the roll screen 1410 of the present embodiment, the holding means 1480 has a storage portion 1490 as shown in FIG. The shape of the storage unit 1490 is the same as the shape of the storage unit 890 of the ninth embodiment, for example. In the present embodiment, the storage sheet (covering portion) 1491 of the storage unit 1490 is a cloth made of fibers. The storage sheet 1491 is configured by knitting a plurality of vertical fibers 1491a and a plurality of horizontal fibers 1491b in a lattice shape. The storage sheet 1491 of the present embodiment corresponds to a covering portion that covers the daylighting sheet.
　複数の縦繊維１４９１ａは、上下方向Ｚに延びた円柱状の繊維であり、幅方向Ｙに沿ってピッチＰ１で並んでいる。ピッチＰ１は、幅方向Ｙに隣り合う縦繊維１４９１ａにおける縦繊維１４９１ａの幅方向Ｙの中心同士の距離である。複数の横繊維１４９１ｂは、幅方向Ｙに延びた円柱状の繊維であり、上下方向Ｚに沿ってピッチＰ２で並んでいる。ピッチＰ２は、上下方向Ｚに隣り合う横繊維１４９１ｂにおける横繊維１４９１ｂの上下方向Ｚの中心同士の距離である。縦繊維１４９１ａの直径Ｄ１と横繊維１４９１ｂの直径Ｄ２とは、ほぼ同じである。縦繊維１４９１ａのピッチＰ１は、横繊維１４９１ｂのピッチＰ２よりも小さい。 The plurality of longitudinal fibers 1491a are columnar fibers extending in the up-down direction Z, and are arranged at a pitch P1 along the width direction Y. The pitch P1 is the distance between the centers in the width direction Y of the longitudinal fibers 1491a in the longitudinal fibers 1491a adjacent to each other in the width direction Y. The plurality of lateral fibers 1491b are columnar fibers extending in the width direction Y, and are arranged at a pitch P2 along the vertical direction Z. The pitch P2 is a distance between the centers in the vertical direction Z of the horizontal fibers 1491b in the horizontal fibers 1491b adjacent in the vertical direction Z. The diameter D1 of the vertical fibers 1491a and the diameter D2 of the horizontal fibers 1491b are substantially the same. The pitch P1 of the vertical fibers 1491a is smaller than the pitch P2 of the horizontal fibers 1491b.
　各繊維は、各繊維に照射された光を、それぞれ各繊維が延びる方向と直交する方向に拡散する。すなわち、縦繊維１４９１ａは、上下方向Ｚと直交する幅方向Ｙに光を拡散し、横繊維１４９１ｂは、幅方向Ｙと直交する上下方向Ｚに光を拡散する。本実施形態では、縦繊維１４９１ａのピッチＰ１が横繊維１４９１ｂのピッチＰ２よりも小さいため、単位面積当たりにおける縦繊維１４９１ａの密度は、単位面積当たりにおける横繊維１４９１ｂの密度よりも大きい。そのため、収納シート１４９１に入射される光Ｌ１においては、縦繊維１４９１ａによって幅方向Ｙに拡散される度合いが、横繊維１４９１ｂによって上下方向Ｚに拡散される度合いよりも大きくなる。これにより、収納シート１４９１に入射された光Ｌ１は、上下方向Ｚよりも幅方向Ｙに大きく拡散される。すなわち、本実施形態において収納シート１４９１は、入射した光Ｌ１を拡散する異方性拡散機能を有する。 Each fiber diffuses the light applied to each fiber in a direction perpendicular to the direction in which each fiber extends. That is, the longitudinal fibers 1491a diffuse light in the width direction Y orthogonal to the up-down direction Z, and the lateral fibers 1491b diffuse light in the up-down direction Z orthogonal to the width direction Y. In this embodiment, since the pitch P1 of the vertical fibers 1491a is smaller than the pitch P2 of the horizontal fibers 1491b, the density of the vertical fibers 1491a per unit area is larger than the density of the horizontal fibers 1491b per unit area. Therefore, in the light L1 incident on the storage sheet 1491, the degree of diffusion in the width direction Y by the vertical fibers 1491a is greater than the degree of diffusion in the vertical direction Z by the horizontal fibers 1491b. Thereby, the light L1 incident on the storage sheet 1491 is diffused more in the width direction Y than in the vertical direction Z. That is, in the present embodiment, the storage sheet 1491 has an anisotropic diffusion function of diffusing the incident light L1.
　図示は省略するが、本実施形態の採光シートは、第９実施形態の採光シート８３０に対して、光学シート８３１が設けられてない点において異なる。本実施形態の採光シートのその他の構成は、第９実施形態の採光シート８３０の構成と同様である。収納部１４９０のその他の構成は、第９実施形態の収納部８９０の構成と同様である。ロールスクリーン１４１０のその他の構成は、第９実施形態のロールスクリーン８１０の構成と同様である。 Although illustration is omitted, the daylighting sheet of the present embodiment is different from the daylighting sheet 830 of the ninth embodiment in that the optical sheet 831 is not provided. Other configurations of the daylighting sheet of the present embodiment are the same as those of the daylighting sheet 830 of the ninth embodiment. The other configuration of the storage unit 1490 is the same as the configuration of the storage unit 890 of the ninth embodiment. The other configuration of the roll screen 1410 is the same as the configuration of the roll screen 810 of the ninth embodiment.
　本実施形態によれば、収納シート１４９１が異方性拡散機能を有するため、収納シート１４９１に入射された光Ｌ１を所定方向、すなわち本実施形態では幅方向Ｙに大きく拡散できる。これにより、幅方向Ｙに大きく拡散された光Ｌ１が光学機能層６０に入射する。
したがって、光学機能層６０によって前側斜め上方に射出される光Ｌ１を幅方向Ｙに大きく拡散できる。これにより、部屋Ｒ内をより明るく照らすことができる。また、光Ｌ１を拡散させることができるため、窓ＷＤから入射される光Ｌ１の光量が大きい場合であっても、人Ｍが眩しく感じることを抑制できる。 According to this embodiment, since the storage sheet 1491 has an anisotropic diffusion function, the light L1 incident on the storage sheet 1491 can be greatly diffused in a predetermined direction, that is, the width direction Y in this embodiment. Thereby, the light L <b> 1 greatly diffused in the width direction Y is incident on the optical function layer 60.
Therefore, the light L1 emitted obliquely upward on the front side by the optical function layer 60 can be largely diffused in the width direction Y. Thereby, the inside of the room R can be illuminated more brightly. In addition, since the light L1 can be diffused, the person M can be prevented from feeling dazzling even when the amount of the light L1 incident from the window WD is large.
　また、本実施形態によれば、縦繊維１４９１ａの直径Ｄ１と横繊維１４９１ｂの直径Ｄ２とがほぼ同じであるため、同じ繊維を用いて縦繊維１４９１ａおよび横繊維１４９１ｂを構成できる。 Moreover, according to this embodiment, since the diameter D1 of the vertical fiber 1491a and the diameter D2 of the horizontal fiber 1491b are substantially the same, the vertical fiber 1491a and the horizontal fiber 1491b can be configured using the same fiber.
　また、本実施形態によれば、収納シート１４９１が光拡散部として機能するため、採光シートに光拡散性を有する光学シートを設けずに、光Ｌ１を拡散させることができる。これにより、採光シートの構成を簡単にできる。 Moreover, according to this embodiment, since the storage sheet 1491 functions as a light diffusing unit, the light L1 can be diffused without providing an optical sheet having light diffusibility in the daylighting sheet. Thereby, the structure of a daylighting sheet can be simplified.
＜第１６実施形態＞
　本実施形態のロールスクリーン１５１０において保持手段１５８０は、図２０に示すように、収納部１５９０を有する。収納部１５９０の形状は、例えば、第９実施形態の収納部８９０の形状と同様である。本実施形態において収納部１５９０の収納シート（被覆部）１５９１は、繊維で構成された布である。収納シート１５９１は、複数の縦繊維１５９１ａと、複数の横繊維１５９１ｂと、が格子状に編まれて構成されている。本実施形態の収納シート１５９１は、採光シートを覆う被覆部に相当する。 <Sixteenth Embodiment>
In the roll screen 1510 of the present embodiment, the holding means 1580 has a storage portion 1590 as shown in FIG. The shape of the storage unit 1590 is the same as the shape of the storage unit 890 of the ninth embodiment, for example. In the present embodiment, the storage sheet (covering portion) 1591 of the storage unit 1590 is a cloth made of fibers. The storage sheet 1591 is configured by knitting a plurality of vertical fibers 1591a and a plurality of horizontal fibers 1591b in a lattice shape. The storage sheet 1591 of this embodiment corresponds to a covering portion that covers the daylighting sheet.
　本実施形態において縦繊維１５９１ａのピッチＰ３と横繊維１５９１ｂのピッチＰ４とは、ほぼ同じである。縦繊維１５９１ａの直径Ｄ３は、横繊維１５９１ｂの直径Ｄ４よりも大きい。そのため、単位面積当たりにおける縦繊維１５９１ａの密度は、単位面積当たりにおける横繊維１５９１ｂの密度よりも大きい。そのため、第１５実施形態の収納シート１４９１と同様に、収納シート１５９１は、収納シート１５９１に入射された光Ｌ１を上下方向Ｚよりも幅方向Ｙに大きく拡散する異方性拡散機能を有する。 In this embodiment, the pitch P3 of the vertical fibers 1591a and the pitch P4 of the horizontal fibers 1591b are substantially the same. The diameter D3 of the vertical fibers 1591a is larger than the diameter D4 of the horizontal fibers 1591b. Therefore, the density of the longitudinal fibers 1591a per unit area is larger than the density of the transverse fibers 1591b per unit area. Therefore, similarly to the storage sheet 1491 of the fifteenth embodiment, the storage sheet 1591 has an anisotropic diffusion function that diffuses the light L1 incident on the storage sheet 1591 more in the width direction Y than in the vertical direction Z.
　収納シート１５９１のその他の構成は、第１５実施形態の収納シート１４９１の構成と同様である。収納部１５９０のその他の構成は、第９実施形態の収納部８９０の構成と同様である。ロールスクリーン１５１０のその他の構成は、第９実施形態のロールスクリーン８１０の構成と同様である。 Other configurations of the storage sheet 1591 are the same as the configuration of the storage sheet 1491 of the fifteenth embodiment. The other configuration of the storage unit 1590 is the same as the configuration of the storage unit 890 of the ninth embodiment. The other configuration of the roll screen 1510 is the same as the configuration of the roll screen 810 of the ninth embodiment.
　本実施形態によれば、縦繊維１５９１ａのピッチＰ３と横繊維１５９１ｂのピッチＰ４とがほぼ同じであるため、各繊維を同じピッチで配置することで、収納シート１５９１を製造することができる。これにより、収納シート１５９１の製造を容易にできる。 According to this embodiment, since the pitch P3 of the vertical fibers 1591a and the pitch P4 of the horizontal fibers 1591b are substantially the same, the storage sheet 1591 can be manufactured by arranging the fibers at the same pitch. Thereby, manufacture of the storage sheet 1591 can be facilitated.
　なお、上記の第１５実施形態および第１６実施形態においては、収納部を構成するスクリーン２０の一部が、異方性拡散機能を有する被覆部であってもよい。この場合、スクリーン２０は、縦繊維と横繊維とで構成される布である。また、収納部を構成するスクリーン２０の一部と収納シートとの両方が、異方性拡散機能を有する被覆部であってもよい。
また、異方性拡散機能は、幅方向Ｙよりも上下方向Ｚに大きく光を拡散する機能であってもよい。 In the fifteenth embodiment and the sixteenth embodiment, a part of the screen 20 constituting the storage portion may be a covering portion having an anisotropic diffusion function. In this case, the screen 20 is a cloth composed of vertical fibers and horizontal fibers. Moreover, the covering part which has an anisotropic diffusion function may be sufficient as both a part of screen 20 which comprises an accommodating part, and an accommodation sheet | seat.
Further, the anisotropic diffusion function may be a function of diffusing light in the vertical direction Z more than the width direction Y.
＜第１７実施形態＞
　本実施形態のロールスクリーン１６１０において採光シート１６３０は、図２１に示すように、スクリーン２０の面と平行な面内に複数設けられている。本実施形態では、複数の採光シート１６３０は、スクリーン２０の後面に配置されている。図２１では、採光シート１６３０は、４つ設けられている。採光シート１６３０は、正方形状である。４つの採光シート１６３０は、上下方向Ｚおよび幅方向Ｙに沿って、２行２列のマトリクス状に配置されている。 <Seventeenth Embodiment>
In the roll screen 1610 of this embodiment, a plurality of daylighting sheets 1630 are provided in a plane parallel to the plane of the screen 20 as shown in FIG. In the present embodiment, the plurality of daylighting sheets 1630 are disposed on the rear surface of the screen 20. In FIG. 21, four daylighting sheets 1630 are provided. The daylighting sheet 1630 has a square shape. The four daylighting sheets 1630 are arranged in a matrix of 2 rows and 2 columns along the vertical direction Z and the width direction Y.
　採光シート１６３０は、図示しない保持手段によってスクリーン２０に保持されている。保持手段としては、上述した第１実施形態から第１６実施形態における保持手段のいずれを用いてもよい。採光シート１６３０のその他の構成は、例えば、第１実施形態の採光シート３０と同様である。ロールスクリーン１６１０のその他の構成は、第１実施形態のロールスクリーン１０の構成と同様である。 The daylighting sheet 1630 is held on the screen 20 by holding means (not shown). As the holding means, any of the holding means in the first to sixteenth embodiments described above may be used. Other configurations of the daylighting sheet 1630 are the same as those of the daylighting sheet 30 of the first embodiment, for example. Other configurations of the roll screen 1610 are the same as the configurations of the roll screen 10 of the first embodiment.
　本実施形態によれば、複数の採光シート１６３０を並べて配置することで、スクリーン２０上における採光シート１６３０が配置された領域を大きくすることができる。そのため、採光シート１６３０の原反の幅が小さい場合であっても、採光シート１６３０の配置面積を大きくできる。 According to this embodiment, by arranging a plurality of daylighting sheets 1630 side by side, the area on the screen 20 where the daylighting sheets 1630 are arranged can be enlarged. Therefore, even if the width of the original sheet of the daylighting sheet 1630 is small, the arrangement area of the daylighting sheet 1630 can be increased.
＜第１８実施形態＞
　本実施形態のロールスクリーン１７１０において採光シート１７３０は、図２２に示すように、スクリーン２０の面と平行な面内に複数設けられている。本実施形態では、複数の採光シート１７３０は、スクリーン２０の後面に配置されている。図２２では、採光シート１７３０は、第１採光シート１７３０Ａと、第２採光シート１７３０Ｂと、第３採光シート１７３０Ｃとの３つ設けられている。採光シート１７３０は、幅方向Ｙに長い長方形状である。第１採光シート１７３０Ａと第２採光シート１７３０Ｂと第３採光シート１７３０Ｃとは、上下方向Ｚに沿って上側から下側に向かってこの順に、互いに等間隔に配置されている。 <Eighteenth embodiment>
In the roll screen 1710 of this embodiment, a plurality of daylighting sheets 1730 are provided in a plane parallel to the plane of the screen 20 as shown in FIG. In the present embodiment, the plurality of daylighting sheets 1730 are disposed on the rear surface of the screen 20. In FIG. 22, three daylighting sheets 1730 are provided: a first daylighting sheet 1730A, a second daylighting sheet 1730B, and a third daylighting sheet 1730C. The daylighting sheet 1730 has a rectangular shape that is long in the width direction Y. The first daylighting sheet 1730A, the second daylighting sheet 1730B, and the third daylighting sheet 1730C are arranged at equal intervals in this order from the upper side to the lower side along the vertical direction Z.
　複数の採光シート１７３０は、互いに異なる光学特性を有する。本明細書において「光学特性が異なる」とは、光学特性の種類が異なることと、同種の光学特性の程度が異なることとを含む。本実施形態において各採光シート１７３０は、第１実施形態の採光シート３０と同種の光学特性を有する。すなわち、図２３に示すように、各採光シート１７３０は、入射した光Ｌ１を前側斜め上方に反射する。各採光シート１７３０は、互いに光学特性の程度が異なる。 The plurality of daylighting sheets 1730 have different optical characteristics. In this specification, “differing optical characteristics” includes different types of optical characteristics and different degrees of optical characteristics of the same type. In the present embodiment, each daylighting sheet 1730 has the same optical characteristics as the daylighting sheet 30 of the first embodiment. That is, as shown in FIG. 23, each daylighting sheet 1730 reflects the incident light L1 obliquely upward on the front side. The daylighting sheets 1730 have different optical characteristics.
　具体的には、第１採光シート１７３０Ａと第２採光シート１７３０Ｂと第３採光シート１７３０Ｃとは、それぞれ反射する光Ｌ１の角度が異なる。第１採光シート１７３０Ａによって反射される光Ｌ１Ａの水平方向に対する傾き角度θＡと、第２採光シート１７３０Ｂによって反射される光Ｌ１Ｂの水平方向に対する傾き角度θＢと、第３採光シート１７３０Ｃによって反射される光Ｌ１Ｃの水平方向に対する傾き角度θＣとは、この順に大きくなる。すなわち、下側に配置される採光シート１７３０ほど、光Ｌ１を反射する角度が大きくなる。ロールスクリーン１７１０のその他の構成は、第１６実施形態のロールスクリーン１６１０の構成と同様である。 Specifically, the first daylighting sheet 1730A, the second daylighting sheet 1730B, and the third daylighting sheet 1730C have different angles of the reflected light L1. The inclination angle θA with respect to the horizontal direction of the light L1A reflected by the first daylighting sheet 1730A, the inclination angle θB with respect to the horizontal direction of the light L1B reflected by the second daylighting sheet 1730B, and the light reflected by the third daylighting sheet 1730C. The inclination angle θC with respect to the horizontal direction of L1C increases in this order. That is, the angle which reflects light L1 becomes large, so that the daylighting sheet 1730 arrange | positioned below. Other configurations of the roll screen 1710 are the same as the configurations of the roll screen 1610 of the sixteenth embodiment.
　本実施形態によれば、複数の採光シート１７３０が互いに異なる光学特性を有するため、ロールスクリーン１７１０に複数の光学特性を付与することができる。本実施形態のように採光シート１７３０の光学特性が光Ｌ１を前側斜め上方に反射する特性であって、各採光シート１７３０によって反射される角度が異なる場合、下側に配置される採光シート１７３０ほど光Ｌ１反射する角度を大きくすることで、採光シート１７３０によって反射される光Ｌ１が人Ｍの眼に直接入ることをより抑制できる。 According to this embodiment, since the plurality of daylighting sheets 1730 have different optical characteristics, a plurality of optical characteristics can be imparted to the roll screen 1710. If the optical characteristics of the daylighting sheet 1730 are such that the light L1 is reflected obliquely upward on the front side as in the present embodiment, and the angles reflected by the daylighting sheets 1730 are different, the daylighting sheet 1730 arranged on the lower side By increasing the angle at which the light L1 is reflected, it is possible to further suppress the light L1 reflected by the daylighting sheet 1730 from directly entering the eyes of the person M.
＜第１９実施形態＞
　本実施形態のロールスクリーン１８１０においてスクリーン１８２０は、図２４に示すように、透過部１８２１と、遮光部１８２２と、を有する。透過部１８２１は、スクリーン１８２０の上部である。透過部１８２１は、透光性を有する。透過部１８２１の材質は、第１実施形態のスクリーン２０と同様に選択できる。透過部１８２１には、採光シート３０が保持されている。遮光部１８２２は、スクリーン１８２０の下部である。遮光部１８２２は、遮光性を有する。遮光部１８２２の材質は、遮光性を有するならば特に限定されない。遮光部１８２２は、例えば、繊維で構成された布である。 <Nineteenth embodiment>
In the roll screen 1810 of this embodiment, the screen 1820 includes a transmission part 1821 and a light shielding part 1822 as shown in FIG. The transmission part 1821 is an upper part of the screen 1820. The transmission part 1821 has translucency. The material of the transmission part 1821 can be selected similarly to the screen 20 of the first embodiment. The daylighting sheet 30 is held in the transmission part 1821. The light shielding unit 1822 is a lower part of the screen 1820. The light shielding unit 1822 has a light shielding property. The material of the light shielding portion 1822 is not particularly limited as long as it has light shielding properties. The light shielding unit 1822 is, for example, a cloth made of fibers.
　本実施形態によれば、スクリーン１８２０が透光性を有する透過部１８２１と遮光性を有する遮光部１８２２とを有するため、ロールスクリーン１８１０の使用環境等に応じて、好適に部屋Ｒ内に光Ｌを取り込むことができる。 According to the present embodiment, since the screen 1820 includes the light transmitting portion 1821 having the light transmitting property and the light shielding portion 1822 having the light blocking property, the light L is suitably placed in the room R according to the use environment of the roll screen 1810 or the like. Can be imported.
　なお、透過部１８２１と遮光部１８２２との配置は、ロールスクリーン１８１０の使用環境等に応じて適宜変更可能である。 Note that the arrangement of the transmission part 1821 and the light shielding part 1822 can be changed as appropriate according to the usage environment of the roll screen 1810 and the like.
＜第２０実施形態＞
　本実施形態のロールスクリーン１９１０においてスクリーン１９２０は、図２５に示すように、遮光性を有する。スクリーン１９２０は、スクリーン１９２０を厚み方向Ｘに貫通する孔部１９２３を有する。本実施形態において孔部１９２３は、幅方向Ｙに沿って等間隔に並んで複数設けられている。孔部１９２３の形状は、上下方向Ｚに長い長方形状である。孔部１９２３は、採光シート３０と厚み方向Ｘに重なる位置に配置されている。採光シート３０に入射した光Ｌ１は、孔部１９２３を通って部屋Ｒ内に入射される。 <20th Embodiment>
In the roll screen 1910 of this embodiment, the screen 1920 has a light shielding property as shown in FIG. The screen 1920 has a hole 1923 that penetrates the screen 1920 in the thickness direction X. In the present embodiment, a plurality of hole portions 1923 are provided along the width direction Y at regular intervals. The hole 1923 has a rectangular shape that is long in the vertical direction Z. The hole 1923 is disposed at a position overlapping the daylighting sheet 30 in the thickness direction X. The light L 1 that has entered the daylighting sheet 30 enters the room R through the hole 1923.
　本実施形態によれば、スクリーン１９２０を遮光性として孔部１９２３を設けることで、スクリーン１９２０内における光Ｌが透過する位置を任意に選択することができる。すなわち、スクリーン１９２０において光Ｌを透過させたい箇所に孔部１９２３を設けることで、孔部１９２３の位置から選択的に光Ｌを部屋Ｒ内に入射させることができる。本実施形態では、採光シート３０と重なる位置に孔部１９２３を設けることで、部屋Ｒ内に入射する光Ｌの大半を、採光シート３０を透過する光Ｌ１とすることができる。本実施形態において示したように、本明細書において「透光性を有する」とは、対象物に光が通過可能な孔部が設けられていることも含む。 According to the present embodiment, the position where the light L is transmitted in the screen 1920 can be arbitrarily selected by providing the hole 1923 with the screen 1920 as a light shielding property. That is, by providing the hole 1923 at a position where the light L is to be transmitted on the screen 1920, the light L can be selectively incident on the room R from the position of the hole 1923. In the present embodiment, by providing the hole 1923 at a position overlapping the daylighting sheet 30, most of the light L incident into the room R can be the light L1 that passes through the daylighting sheet 30. As shown in this embodiment, “having translucency” in this specification includes that a hole through which light can pass is provided in an object.
＜第２１実施形態＞
　本実施形態のロールスクリーン２０１０は、図２６に示すように、部屋２００３内において窓２００２を覆うことが可能なように配置されている。ロールスクリーン２０１０のスクリーンは、第１９実施形態のロールスクリーン１８１０のスクリーン１８２０と同様に、透過部２００９と、遮光部２００８と、を有する。透過部２００９は、ロールスクリーン２０１０におけるスクリーンの上部である。透過部２００９は、第１９実施形態の透過部１８２１と同様である。透過部２００９には、採光シートが保持されている。遮光部２００８は、ロールスクリーン２０１０におけるスクリーンの下部である。遮光部２００８は、第１９実施形態の遮光部１８２２と同様である。 <Twenty-first embodiment>
As shown in FIG. 26, the roll screen 2010 of the present embodiment is arranged so as to cover the window 2002 in the room 2003. The screen of the roll screen 2010 includes a transmission part 2009 and a light shielding part 2008, like the screen 1820 of the roll screen 1810 of the nineteenth embodiment. The transmission part 2009 is an upper part of the screen in the roll screen 2010. The transmission part 2009 is the same as the transmission part 1821 of the nineteenth embodiment. The transmissive part 2009 holds a daylighting sheet. The light shielding unit 2008 is a lower part of the screen in the roll screen 2010. The light shielding portion 2008 is the same as the light shielding portion 1822 of the nineteenth embodiment.
　太陽光（外光）が導入される部屋２００３の天井２００３ａを構成する天井材は、高い光反射性を有することが望ましい。図２６および図２７に示すように、部屋２００３の天井２００３ａには、光反射性を有する天井材として、光反射性天井材２００４が設置されている。光反射性天井材２００４は、部屋２００３に入射する太陽光を部屋２００３の奥の方に導入することを促進する。光反射性天井材２００４は、窓際の天井２００３ａに設置されている。具体的には、天井２００３ａの所定の領域Ｅ（窓２００２から約３ｍの領域）に設置されている。 It is desirable that the ceiling material constituting the ceiling 2003a of the room 2003 into which sunlight (external light) is introduced has high light reflectivity. As shown in FIGS. 26 and 27, a light-reflective ceiling material 2004 is installed on a ceiling 2003a of a room 2003 as a light-reflective ceiling material. The light-reflective ceiling material 2004 facilitates the introduction of sunlight incident on the room 2003 toward the back of the room 2003. The light-reflective ceiling material 2004 is installed on the ceiling 2003a near the window. Specifically, it is installed in a predetermined area E (an area about 3 m from the window 2002) of the ceiling 2003a.
　光反射性天井材２００４は、上述したように、ロールスクリーン２０１０が設置された窓２００２を介して部屋２００３内に導入された太陽光を、部屋２００３の奥側（図２６では前側）まで効率よく導く。ロールスクリーン２０１０から部屋２００３内の天井２００３ａへ向けて導入された太陽光は、光反射性天井材２００４で反射され、向きを変えて部屋２００３内の奥に置かれた机２００５の机上面２００５ａを照らす。これにより、机上面２００５ａを明るくすることができる。 As described above, the light-reflective ceiling material 2004 efficiently transmits sunlight introduced into the room 2003 through the window 2002 in which the roll screen 2010 is installed to the back side of the room 2003 (the front side in FIG. 26). Lead. Sunlight introduced from the roll screen 2010 toward the ceiling 2003a in the room 2003 is reflected by the light-reflective ceiling material 2004, and changes its direction to the desk top surface 2005a of the desk 2005 placed in the back of the room 2003. Illuminate. Thereby, the desk surface 2005a can be brightened.
　光反射性天井材２００４は、拡散反射性を有していてもよいし、鏡面反射性を有していてもよい。光反射性天井材２００４は、部屋２００３内の奥に置かれた机２００５の机上面２００５ａを明るくする効果と、部屋２００３内に居る人にとって不快なグレア光を抑える効果とを両立するために、拡散反射性および鏡面反射性を適度に併せ持つことが好ましい。 The light reflective ceiling material 2004 may have diffuse reflectivity or may have specular reflectivity. The light-reflective ceiling material 2004 has both the effect of brightening the desk upper surface 2005a of the desk 2005 placed in the back of the room 2003 and the effect of suppressing glare light that is uncomfortable for people in the room 2003. It is preferable to have a combination of diffuse reflectivity and specular reflectivity.
　ロールスクリーン２０１０の採光シートを介して部屋２００３内に導入された太陽光のうちの多くは天井に向かう。一般に、窓２００２の近傍は光量が十分である場合が多い。
そのため、ロールスクリーン２０１０と光反射性天井材２００４とを併用することにより、ロールスクリーン２０１０によって窓２００２付近の天井（領域Ｅ）に入射した光を、窓際に比べて光量の少ない部屋２００３内の奥側に振り分けることができる。 Most of the sunlight introduced into the room 2003 through the daylighting sheet of the roll screen 2010 goes to the ceiling. In general, the amount of light in the vicinity of the window 2002 is often sufficient.
Therefore, by using the roll screen 2010 and the light-reflective ceiling material 2004 in combination, the light incident on the ceiling (region E) near the window 2002 by the roll screen 2010 is reduced in the interior of the room 2003 where the amount of light is small compared to the window. Can be sorted to the side.
　光反射性天井材２００４は、例えばアルミニウム等の金属板に数十μｍ程度の周期の凹凸によるエンボス加工を施したり、同様の凹凸を形成した樹脂基板の表面にアルミニウム等の金属薄膜を蒸着したりして作製することができる。エンボス加工により形成される凹凸は、数十μｍより大きな周期の曲面で形成されていてもよい。 For example, the light-reflective ceiling material 2004 may be formed by embossing a metal plate of aluminum or the like with irregularities having a period of about several tens of μm, or by depositing a metal thin film of aluminum or the like on the surface of a resin substrate on which similar irregularities are formed. Can be produced. The unevenness formed by embossing may be formed as a curved surface with a period greater than several tens of μm.
　光反射性天井材２００４に形成するエンボス形状を適宜変えることにより、光の配光特性や部屋２００３内での光の分布を制御することができる。例えば、部屋２００３内の奥側に延在する（厚み方向Ｘに延びる）ストライプ状にエンボス加工を施した場合は、光反射性天井材２００４で反射した光が、窓２００２の左右方向（凹凸の長手方向に交差する方向，図２６では幅方向Ｙ）に拡がる。窓２００２の大きさや向きが限られているような場合は、このような特性を利用して、光反射性天井材２００４により光を水平方向（幅方向Ｙ）へ拡散させるとともに、部屋２００３の奥側（前側）に向けて反射させることができる。 By appropriately changing the embossed shape formed on the light-reflective ceiling material 2004, the light distribution characteristics of light and the light distribution in the room 2003 can be controlled. For example, when embossing is performed in a stripe shape extending in the interior side of the room 2003 (extending in the thickness direction X), the light reflected by the light-reflective ceiling material 2004 is reflected in the left-right direction of the window 2002 (unevenness). It extends in the direction intersecting the longitudinal direction, ie, the width direction Y in FIG. When the size and direction of the window 2002 are limited, the light is reflected in the horizontal direction (width direction Y) by the light-reflective ceiling material 2004 and the back of the room 2003 is used. It can be reflected toward the side (front side).
　ロールスクリーン２０１０は、部屋２００３の照明システム２０００の一部として用いられる。照明システム２０００は、例えば、ロールスクリーン２０１０と、複数の室内照明装置２００７と、ロールスクリーン２０１０および室内照明装置２００７の制御系と、天井２００３ａに設置された光反射性天井材２００４と、を含む部屋２００３全体の構成部材から構成される。 The roll screen 2010 is used as a part of the lighting system 2000 in the room 2003. The illumination system 2000 includes, for example, a room including a roll screen 2010, a plurality of indoor illumination devices 2007, a control system for the roll screen 2010 and the indoor illumination device 2007, and a light reflective ceiling material 2004 installed on the ceiling 2003a. It is comprised from the structural member of the whole 2003.
　複数の室内照明装置２００７は、図２７に示すように、部屋２００３の天井２００３ａに、幅方向Ｙおよび厚み方向Ｘに沿って格子状に配置されている。例えば、部屋２００３の幅方向Ｙの寸法Ｗ３が１８ｍ、部屋２００３の厚み方向Ｘの寸法Ｗ４が９ｍの場合、複数の室内照明装置２００７は、天井２００３ａの幅方向Ｙおよび厚み方向Ｘに、それぞれ１．８ｍの間隔Ｐ５をおいて格子状に配置されている。図２７では、５０個の室内照明装置２００７が、１０行（幅方向Ｙ）×５列（厚み方向Ｘ）に配列されている。室内照明装置２００７の各列を、窓２００２に近い方から順に、Ｓ１列、Ｓ２列、Ｓ３列、Ｓ４列、Ｓ５列とする。 27. As shown in FIG. 27, the plurality of indoor lighting devices 2007 are arranged in a lattice shape along the width direction Y and the thickness direction X on the ceiling 2003a of the room 2003. For example, when the dimension W3 in the width direction Y of the room 2003 is 18 m and the dimension W4 in the thickness direction X of the room 2003 is 9 m, the plurality of indoor lighting devices 2007 are respectively 1 in the width direction Y and the thickness direction X of the ceiling 2003a. It is arranged in a grid pattern with an interval P5 of .8 m. In FIG. 27, 50 indoor lighting devices 2007 are arranged in 10 rows (width direction Y) × 5 columns (thickness direction X). Each row of the indoor lighting device 2007 is set in the order of S1, S2, S3, S4, and S5 in order from the side closer to the window 2002.
　室内照明装置２００７は、図２６に示すように、室内照明器具２００７ａと、明るさ検出部２００７ｂと、制御部２００７ｃと、を有する。明るさ検出部２００７ｂと制御部２００７ｃとは、例えば、室内照明器具２００７ａに一体化されている。室内照明器具２００７ａは、天井２００３ａから下方に光を射出して、部屋２００３内を照明する。室内照明器具２００７ａは、例えば、ＬＥＤランプを有する。 As shown in FIG. 26, the indoor lighting device 2007 includes an indoor lighting fixture 2007a, a brightness detection unit 2007b, and a control unit 2007c. The brightness detection unit 2007b and the control unit 2007c are integrated with, for example, the indoor lighting fixture 2007a. The indoor lighting fixture 2007a emits light downward from the ceiling 2003a to illuminate the interior of the room 2003. The indoor lighting fixture 2007a has, for example, an LED lamp.
　明るさ検出部２００７ｂは、室内照明器具２００７ａが照明する被照射面の反射光を受光して、被照射面の照度を検出する。本実施形態において明るさ検出部２００７ｂは、例えば、部屋２００３内に置かれた机２００５の机上面２００５ａの照度を検出する。より詳細には、室内照明器具２００７ａは、室内照明器具２００７ａが設けられた室内照明装置２００７の下方に配置された机２００５の机上面照度を検出する。明るさ検出部２００７ｂが検出した照度は、制御部２００７ｃに出力される。 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. In this embodiment, the brightness detection unit 2007b detects the illuminance of the desk surface 2005a of the desk 2005 placed in the room 2003, for example. More specifically, the indoor lighting fixture 2007a detects the illuminance of the desk surface of the desk 2005 disposed below the indoor lighting device 2007 provided with the indoor lighting fixture 2007a. The illuminance detected by the brightness detection unit 2007b is output to the control unit 2007c.
　制御部２００７ｃは、室内照明器具２００７ａを制御して、室内照明器具２００７ａのＬＥＤランプから射出される光の出力を調整する。制御部２００７ｃは、明るさ検出部２００７ｂから入力される照度に基づいたフィードバック制御により、室内照明器具２００７ａの光出力を調整する。本実施形態では、制御部２００７ｃは、明るさ検出部２００７ｂが検出する机上面２００５ａの照度が一定の目標照度Ｌ０（例えば、平均照度：７５０ｌｘ）になるようにフィードバック制御を行っている。複数の室内照明装置２００７にそれぞれ設けられた各制御部２００７ｃは、互いに接続されている。 The control unit 2007c controls the indoor lighting fixture 2007a to adjust the output of light emitted from the LED lamp of the indoor lighting fixture 2007a. The control unit 2007c adjusts the light output of the indoor lighting fixture 2007a by feedback control based on the illuminance input from the brightness detection unit 2007b. In the present embodiment, the control unit 2007c performs feedback control so that the illuminance of the desk surface 2005a detected by the brightness detection unit 2007b becomes a constant target illuminance L0 (for example, average illuminance: 750 lx). Each control unit 2007c provided in each of the plurality of indoor lighting devices 2007 is connected to each other.
　なお、室内照明装置２００７は、室内照明器具２００７ａおよび明るさ検出部２００７ｂをそれぞれ複数ずつ有していてもよい。この場合、明るさ検出部２００７ｂは、例えば、各室内照明器具２００７ａに対して１個ずつ設けられる。 Note that the indoor lighting device 2007 may include a plurality of indoor lighting fixtures 2007a and a plurality of brightness detection units 2007b. In this case, for example, one brightness detection unit 2007b is provided for each indoor lighting device 2007a.
　図２８は、ロールスクリーン２０１０を介して部屋２００３内に採光された光（太陽光）による机上面照度［ｌｘ］と、室内照明装置２００７から射出された光による机上面照度［ｌｘ］との関係の一例を示すグラフである。図２８において、縦軸は机上面照度［ｌｘ］を示し、横軸は窓２００２からの距離［ｍ］を示す。また、図中の破線は、机上面照度の目標照度Ｌ０を示す。 FIG. 28 shows the relationship between the desk surface illuminance [lx] due to the light (sunlight) collected in the room 2003 via the roll screen 2010 and the desk top illuminance [lx] due to the light emitted from the room lighting device 2007. It is a graph which shows an example. In FIG. 28, the vertical axis represents desk surface illuminance [lx], and the horizontal axis represents distance [m] from the window 2002. Moreover, the broken line in a figure shows the target illumination intensity L0 of desk surface illumination intensity.
　また、図中の●は、ロールスクリーン２０１０を介して部屋２００３内に採光された光（太陽光）による机上面照度を示す。図中の△は、室内照明装置２００７から射出された光による机上面照度を示す。図中の◇は、ロールスクリーン２０１０を介して部屋２００３内に採光された光（太陽光）による机上面照度と、室内照明装置２００７から射出された光による机上面照度との合計の机上面照度を示す。 In the figure, ● indicates the illuminance on the desk surface by the light (sunlight) collected in the room 2003 through the roll screen 2010. Δ in the figure indicates the illuminance on the desk surface due to the light emitted from the indoor lighting device 2007. In the figure, ◇ indicates the total desk surface illuminance of the desk top illuminance by the light (sunlight) collected in the room 2003 through the roll screen 2010 and the desk top illuminance by the light emitted from the room lighting device 2007. Indicates.
　図２８に示すように、ロールスクリーン２０１０により採光された光に起因する机上面照度は、窓２００２の近傍ほど大きく、窓２００２から遠くなるに従って小さくなる。このように、ロールスクリーン２０１０を適用した部屋２００３では、昼間における窓２００２からの自然採光により、部屋２００３の奥行き方向（厚み方向Ｘ）に沿って照度分布が生じる。したがって、ロールスクリーン２０１０による採光のみでは、図２８に示すように、部屋２００３の奥側において机上面照度が目標照度Ｌ０より小さくなる場合がある。 As shown in FIG. 28, the desk surface illuminance caused by the light collected by the roll screen 2010 is larger in the vicinity of the window 2002 and decreases as the distance from the window 2002 increases. Thus, in the room 2003 to which the roll screen 2010 is applied, an illuminance distribution is generated along the depth direction (thickness direction X) of the room 2003 due to natural daylighting from the window 2002 in the daytime. Accordingly, when only the lighting by the roll screen 2010 is performed, the desk surface illuminance may be smaller than the target illuminance L0 on the back side of the room 2003 as shown in FIG.
　これに対して、本実施形態の照明システム２０００では、ロールスクリーン２０１０による採光と共に、室内照明装置２００７を併用することで、部屋２００３内における机上面照度を窓２００２からの距離によらず目標照度Ｌ０以上にすることができる。具体的には、上述したように、室内照明装置２００７は、各室内照明装置２００７の下方の机２００５の机上面照度を明るさ検出部２００７ｂにより検出し、机上面照度が一定の目標照度Ｌ０になるように調光制御されて点灯する。ここで、上述したように、ロールスクリーン２０１０により採光された太陽光による机上面照度は、窓２００２の近傍から部屋２００３の奥側に向かうに従って小さくなる。したがって、室内照明装置２００７の光出力は、部屋２００３の奥側に配置される室内照明装置２００７ほど大きくなる。 On the other hand, in the illumination system 2000 of the present embodiment, by using the indoor lighting device 2007 together with the lighting by the roll screen 2010, the illuminance on the desk surface in the room 2003 can be set to the target illuminance L0 regardless of the distance from the window 2002. This can be done. Specifically, as described above, the indoor lighting device 2007 detects the desk surface illuminance of the desk 2005 below each indoor lighting device 2007 by the brightness detection unit 2007b, and the desk illuminance is set to the target illuminance L0 that is constant. The light is controlled so as to be turned on. Here, as described above, the desk surface illuminance by sunlight collected by the roll screen 2010 decreases from the vicinity of the window 2002 toward the back of the room 2003. Therefore, the light output of the room lighting device 2007 becomes larger as the room lighting device 2007 arranged on the back side of the room 2003.
　図２８では、Ｓ１列およびＳ２列の室内照明装置２００７が配置される位置においては、ロールスクリーン２０１０により採光された太陽光による机上面照度は、目標照度Ｌ０以上である。そのため、Ｓ１列およびＳ２列の室内照明装置２００７は、ほとんど点灯しない、または消灯している。一方、Ｓ３列、Ｓ４列およびＳ５列の室内照明装置２００７が配置される位置においては、ロールスクリーン２０１０により採光された太陽光による机上面照度は、目標照度Ｌ０よりも小さい。そのため、Ｓ３列、Ｓ４列およびＳ５列の室内照明装置２００７は、ロールスクリーン２０１０により採光された太陽光による机上面照度と目標照度Ｌ０との差分を補償するような光出力で点灯する。Ｓ３列の室内照明装置２００７の光出力と、Ｓ４列の室内照明装置２００７の光出力と、Ｓ５列の室内照明装置２００７の光出力と、はこの順で大きくなる。 28, at the position where the indoor lighting devices 2007 in the S1 and S2 rows are arranged, the desk surface illuminance by sunlight collected by the roll screen 2010 is equal to or higher than the target illuminance L0. Therefore, the indoor lighting devices 2007 in the S1 row and the S2 row are hardly turned on or turned off. On the other hand, at the positions where the indoor lighting devices 2007 in the S3, S4, and S5 rows are arranged, the desk surface illuminance by sunlight collected by the roll screen 2010 is smaller than the target illuminance L0. Therefore, the indoor lighting devices 2007 in the S3, S4, and S5 rows are lit with such a light output that compensates for the difference between the desk surface illuminance due to sunlight collected by the roll screen 2010 and the target illuminance L0. The light output of the S3 row indoor lighting device 2007, the light output of the S4 row indoor lighting device 2007, and the light output of the S5 row indoor lighting device 2007 increase in this order.
　結果として、部屋２００３の机上面２００５ａは、ロールスクリーン２０１０により採光された太陽光と室内照明装置２００７から射出される光との双方で照らされ、部屋２００３全体にわたって執務をする上で十分とされる机上面照度である７５０ｌｘ（「ＪＩＳ
　Ｚ９１１０　照明総則」の執務室における推奨維持照度）を実現することができる。 As a result, the desk surface 2005a of the room 2003 is illuminated by both the sunlight collected by the roll screen 2010 and the light emitted from the interior lighting device 2007, which is sufficient for working throughout the room 2003. 750 lx ("JIS")
The recommended maintenance illuminance in the office of “Z9110 General Lighting” can be realized.
　以上述べたように、ロールスクリーン２０１０と室内照明装置２００７とを併用することにより、部屋２００３全体にわたって執務をする上で十分とされる机上面照度を確保することができる。したがって、季節や天気による影響を受けることなく、より一層安定した明るい光環境が得られる。また、ロールスクリーン２０１０によって太陽光を部屋２００３内の奥側まで届けることが可能であるため、室内照明装置２００７の光出力を小さくしつつ、執務をする上で十分とされる机上面照度を確保することができる。そのため、室内照明装置２００７の消費電力を低減できる。 As described above, by using the roll screen 2010 and the room lighting device 2007 in combination, it is possible to secure the desk surface illumination sufficient for working the entire room 2003. Therefore, a more stable and bright light environment can be obtained without being affected by the season or weather. In addition, since it is possible to deliver sunlight to the inner side of the room 2003 by the roll screen 2010, the illuminance on the desk surface sufficient for work is ensured while reducing the light output of the indoor lighting device 2007. can do. Therefore, the power consumption of the indoor lighting device 2007 can be reduced.
　なお、上述した各実施形態において、採光シートは、スクリーンの後面に保持される構成としたが、これに限られない。採光シートは、スクリーンの前面に保持される構成としてもよい。この場合、保持手段もスクリーンの前面に設けられる。また、採光シートがスクリーンのいずれの面に保持される場合においても、採光部は、前側に突出していてもよいし、後側に突出していてもよい。すなわち、上述した各実施形態において、採光シートは、厚み方向Ｘに反転して設けられていてもよい。 In each of the above-described embodiments, the daylighting sheet is configured to be held on the rear surface of the screen, but is not limited thereto. The daylighting sheet may be configured to be held on the front surface of the screen. In this case, the holding means is also provided on the front surface of the screen. Further, in the case where the daylighting sheet is held on any surface of the screen, the daylighting unit may protrude to the front side or may protrude to the rear side. That is, in each embodiment described above, the daylighting sheet may be provided so as to be reversed in the thickness direction X.
　また、上述した各実施形態において、採光シートの光学機能層は、入射した光Ｌ１を斜め上方に向けて反射する機能を有する構成としたがこれに限られず、他の光学特性を有する構成であってもよい。光学機能層は、例えば、光拡散機能を有する構成であってもよい。 In each of the embodiments described above, the optical function layer of the daylighting sheet has a function of reflecting incident light L1 obliquely upward. However, the present invention is not limited to this, and has other optical characteristics. May be. For example, the optical functional layer may be configured to have a light diffusion function.
　また、本発明の一態様による採光装置は、ロールスクリーンに限られず、スクリーンに対して採光シートが保持される構成の製品であれば、いかなる製品に対しても適用可能である。なお、本明細書においてスクリーンとは、例えば、繊維で構成された布全般を含む。本発明の一態様による採光装置は、巻取機構を有しないスクリーンに対して適用されてもよいし、スラットがスクリーンとなっているブラインドに適用されてもよい。 The lighting device according to one embodiment of the present invention is not limited to a roll screen, and can be applied to any product as long as the product has a configuration in which a daylighting sheet is held on the screen. In the present specification, the screen includes, for example, all fabrics made of fibers. The daylighting device according to one aspect of the present invention may be applied to a screen that does not have a winding mechanism, or may be applied to a blind in which a slat is a screen.
　また、上記説明した各構成は、相互に矛盾しない範囲内において、適宜組み合わせることができる。 Also, the above-described configurations can be appropriately combined within a range that does not contradict each other.
　本発明の一つの態様は、採光シートをスクリーンに対して保持する保持手段が破損することを抑制することが必要な採光装置などに適用することができる。 One embodiment of the present invention can be applied to a daylighting apparatus or the like that needs to suppress the breakage of the holding means that holds the daylighting sheet with respect to the screen.
　１０，１１０，２１０，３１０，４１０，５１０，６１０，７１０，８１０，９１０，１０１０，１１１０，１２１０，１３１０，１４１０，１５１０，１６１０，１７１０，１８１０，１９１０，２０１０…ロールスクリーン、２０，１８２０，１９２０…スクリーン、３０，１３０，２３０，８３０，１６３０，１７３０…採光シート、３０ａ，１３０ａ，２３０ａ，８３０ａ…非固定部、４０…巻取機構、５０…基材シート、６０…光学機能層、６１…採光部、６１ｃ…反射面、７０，１７０，２７０…固定手段、８０，１８０，２８０，３８０，４８０，５８０，６８０，７８０，８８０，９８０，１０８０，１１８０，１２８０，１３８０，１４８０，１５８０…保持手段、３７１，４７１，５７１，６７１，７７１…補助シート、８３１…光学シート、８９０，９９０，１０９０，１１
９０，１４９０，１５９０…収納部、１４９１，１５９１…収納シート（被覆部）、Ｙ…幅方向、Ｚ…上下方向（所定方向） 10, 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110, 1210, 1310, 1410, 1510, 1610, 1710, 1810, 1910, 2010... Roll screen, 20, 1820, 1920 ... Screen, 30, 130, 230, 830, 1630, 1730 ... Daylighting sheet, 30a, 130a, 230a, 830a ... Non-fixed part, 40 ... Winding mechanism, 50 ... Base sheet, 60 ... Optical functional layer, 61 ... Daylighting part, 61c ... reflective surface, 70, 170, 270 ... fixing means, 80, 180, 280, 380, 480, 580, 680, 780, 880, 980, 1080, 1180, 1280, 1380, 1480, 1580 ... holding Means, 371, 471, 571, 671, 771 ... auxiliary sheet 831 ... optical sheet, 890,990,1090,11
90, 1490, 1590 ... storage part, 1491, 1591 ... storage sheet (covering part), Y ... width direction, Z ... vertical direction (predetermined direction)

Claims (14)

  1. 　透光性を有するスクリーンと、
    　透光性を有する基材シートおよび前記基材シートの一方側の面に配置された光学機能層を有し、前記スクリーンに重ねて配置された採光シートと、
    　前記採光シートを前記スクリーンに対して保持する保持手段と、
    　を備え、
    　前記採光シートは、前記スクリーンに対して直接的に固定されない非固定部を有する、採光装置。     A translucent screen;
    A daylighting sheet having a translucent base sheet and an optical functional layer disposed on one surface of the base sheet, and being disposed on the screen;
    Holding means for holding the daylighting sheet against the screen;
    With
    The said daylighting sheet | seat is a daylighting apparatus which has an unfixed part which is not fixed directly with respect to the said screen.
  2. 　前記保持手段は、前記採光シートの一部を前記スクリーンに直接的に固定する固定手段を有する、請求項１に記載の採光装置。 The lighting device according to claim 1, wherein the holding unit includes a fixing unit that directly fixes a part of the daylighting sheet to the screen.
  3. 　前記非固定部は、前記採光シートの外縁のうちの少なくとも一部を含む、請求項２に記載の採光装置。 The daylighting apparatus according to claim 2, wherein the non-fixed portion includes at least a part of an outer edge of the daylighting sheet.
  4. 　前記固定手段は、前記採光シートの上端部を前記スクリーンに直接的に固定し、
    　前記採光シートのうち前記固定手段よりも下側に位置する部分は、前記非固定部である、請求項３に記載の採光装置。     The fixing means directly fixes the upper end of the daylighting sheet to the screen,
    The daylighting device according to claim 3, wherein a portion of the daylighting sheet located below the fixing means is the non-fixed part.
  5. 　前記基材シートの上下方向の熱膨張率は、前記基材シートの上下方向と直交する幅方向の熱膨張率よりも大きい、請求項４に記載の採光装置。 The daylighting apparatus according to claim 4, wherein a thermal expansion coefficient in the vertical direction of the base sheet is larger than a thermal expansion coefficient in the width direction orthogonal to the vertical direction of the base sheet.
  6. 　前記保持手段は、前記採光シートの前記スクリーンと逆側の面に重ねて配置された透光性を有する補助シートを有し、
    　前記補助シートは、前記スクリーンの面に直接的に固定されている、請求項２に記載の採光装置。     The holding means has an auxiliary sheet having translucency arranged to overlap the surface of the daylighting sheet opposite to the screen,
    The daylighting apparatus according to claim 2, wherein the auxiliary sheet is directly fixed to a surface of the screen.
  7. 　前記保持手段は、前記スクリーンに設けられた袋状の収納部を有し、
    　前記収納部は、透光性を有し、
    　前記採光シートは、前記収納部に収納され、
    　前記採光シート全体が、前記非固定部である、請求項１に記載の採光装置。     The holding means has a bag-shaped storage portion provided on the screen,
    The storage portion has translucency,
    The daylighting sheet is stored in the storage unit,
    The lighting device according to claim 1, wherein the entire daylighting sheet is the non-fixed portion.
  8. 　前記収納部は、前記採光シートを覆う被覆部を有し、
    　前記被覆部は、入射した光を拡散する異方性拡散機能を有する、請求項７に記載の採光装置。     The storage portion has a covering portion that covers the daylighting sheet,
    The daylighting device according to claim 7, wherein the covering portion has an anisotropic diffusion function of diffusing incident light.
  9. 　前記採光シートは、前記スクリーンの面と平行な面内に複数設けられている、請求項１に記載の採光装置。 The daylighting apparatus according to claim 1, wherein a plurality of the daylighting sheets are provided in a plane parallel to the plane of the screen.
  10. 　複数の前記採光シートは、互いに異なる光学特性を有する、請求項９に記載の採光装置。 The daylighting device according to claim 9, wherein the plurality of daylighting sheets have different optical characteristics.
  11. 　前記採光シートは、前記基材シートと重ねて配置された光学シートを有し、
    　前記光学シートは、前記光学機能層と異なる光学特性を有する、請求項１に記載の採光装置。     The daylighting sheet has an optical sheet arranged to overlap the base sheet,
    The daylighting device according to claim 1, wherein the optical sheet has optical characteristics different from those of the optical functional layer.
  12. 　前記光学機能層は、所定方向に並んで配置された複数の採光部を有し、
    　前記採光部は、前記採光部に入射された光の少なくとも一部を前記所定方向の一方側に向けて反射する反射面を有する、請求項１に記載の採光装置。     The optical functional layer has a plurality of daylighting units arranged in a predetermined direction,
    The daylighting device according to claim 1, wherein the daylighting unit includes a reflection surface that reflects at least a part of light incident on the daylighting unit toward one side in the predetermined direction.
  13. 　前記採光シートは、前記採光部から射出された光が入射される光拡散部を有する、請求項１２に記載の採光装置。 13. The daylighting apparatus according to claim 12, wherein the daylighting sheet has a light diffusing portion into which light emitted from the daylighting portion is incident.
  14. 　前記スクリーンを巻き取り可能な巻取機構をさらに備え、
    　ロールスクリーンである、請求項１から１３のいずれか一項に記載の採光装置。     A winding mechanism capable of winding the screen;
    The daylighting device according to any one of claims 1 to 13, which is a roll screen.
PCT/JP2018/000253 2017-01-10 2018-01-10 Daylighting device WO2018131584A1 (en)

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JP2014238513A (en) * 2013-06-07 2014-12-18 大日本印刷株式会社 Light control member
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JP2009025774A (en) * 2007-07-24 2009-02-05 Toppan Printing Co Ltd Lens sheet, optical sheet for display, back light unit using it, and display device
JP2010102046A (en) * 2008-10-22 2010-05-06 Seiko Epson Corp Optical element and method of producing optical element
JP2014238513A (en) * 2013-06-07 2014-12-18 大日本印刷株式会社 Light control member
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