[go: up one dir, main page]

WO2018131584A1 - Dispositif d'éclairage naturel - Google Patents

Dispositif d'éclairage naturel Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
daylighting
screen
light
daylighting sheet
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/000253
Other languages
English (en)
Japanese (ja)
Inventor
俊平 西中
透 菅野
俊 植木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Publication of WO2018131584A1 publication Critical patent/WO2018131584A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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)

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

L'invention concerne, dans un mode de réalisation, un dispositif d'éclairage naturel qui comprend: un écran transmetteur de lumière; une feuille d'éclairage naturel disposée sur le dessus de l'écran et comprenant une feuille de base transmettrice de lumière et une couche à fonction optique disposée sur une surface de la feuille de base; et un moyen de maintien qui maintient la feuille d'éclairage naturel par rapport à l'écran. La feuille d'éclairage naturel comprend une partie de non-fixation qui n'est pas directement fixée à l'écran.
PCT/JP2018/000253 2017-01-10 2018-01-10 Dispositif d'éclairage naturel Ceased WO2018131584A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-001746 2017-01-10
JP2017001746 2017-01-10

Publications (1)

Publication Number Publication Date
WO2018131584A1 true WO2018131584A1 (fr) 2018-07-19

Family

ID=62840453

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/000253 Ceased WO2018131584A1 (fr) 2017-01-10 2018-01-10 Dispositif d'éclairage naturel

Country Status (1)

Country Link
WO (1) WO2018131584A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009025774A (ja) * 2007-07-24 2009-02-05 Toppan Printing Co Ltd レンズシート、ディスプレイ用光学シート及びそれを用いたバックライトユニット、ディスプレイ装置
JP2010102046A (ja) * 2008-10-22 2010-05-06 Seiko Epson Corp 光学素子および光学素子の製造方法
JP2014238513A (ja) * 2013-06-07 2014-12-18 大日本印刷株式会社 光制御部材
WO2016067998A1 (fr) * 2014-10-28 2016-05-06 シャープ株式会社 Dispositif d'éclairage naturel et système d'éclairage naturel
JP2016091941A (ja) * 2014-11-10 2016-05-23 シャープ株式会社 採光装置
JP2016118608A (ja) * 2014-12-19 2016-06-30 シャープ株式会社 採光装置、採光システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009025774A (ja) * 2007-07-24 2009-02-05 Toppan Printing Co Ltd レンズシート、ディスプレイ用光学シート及びそれを用いたバックライトユニット、ディスプレイ装置
JP2010102046A (ja) * 2008-10-22 2010-05-06 Seiko Epson Corp 光学素子および光学素子の製造方法
JP2014238513A (ja) * 2013-06-07 2014-12-18 大日本印刷株式会社 光制御部材
WO2016067998A1 (fr) * 2014-10-28 2016-05-06 シャープ株式会社 Dispositif d'éclairage naturel et système d'éclairage naturel
JP2016091941A (ja) * 2014-11-10 2016-05-23 シャープ株式会社 採光装置
JP2016118608A (ja) * 2014-12-19 2016-06-30 シャープ株式会社 採光装置、採光システム

Similar Documents

Publication Publication Date Title
JP6642872B2 (ja) 採光部材、採光装置、ロールスクリーン及びブラインド
JP6461820B2 (ja) 採光部材、窓ガラス、ロールスクリーン、採光ルーバー
US10302264B2 (en) Lighting device
WO2017061554A1 (fr) Élément d'éclairage naturel, procédé de fabrication d'un élément d'éclairage naturel, et appareil d'éclairage naturel
WO2016067998A1 (fr) Dispositif d'éclairage naturel et système d'éclairage naturel
WO2015076245A1 (fr) Dispositif d'éclairage naturel et lamelle d'éclairage naturel
WO2015119071A1 (fr) Élément d'éclairage naturel, dispositif d'éclairage naturel, et procédé d'installation d'élément d'éclairage naturel
JPWO2016002869A1 (ja) 採光スラット及び採光装置
WO2016175207A1 (fr) Système d'éclairage naturel
WO2017038847A1 (fr) Système et procédé d'éclairage naturel et bâtiment
WO2018025993A1 (fr) Dispositif d'éclairage
WO2017086314A1 (fr) Dispositif et système d'éclairage
WO2016104626A1 (fr) Dispositif de collecte de lumière naturelle
WO2018221505A1 (fr) Élément de diffusion de lumière pour élément d'éclairage, et dispositif d'éclairage
JP2016118608A (ja) 採光装置、採光システム
JP2016091941A (ja) 採光装置
WO2018131584A1 (fr) Dispositif d'éclairage naturel
US20200200344A1 (en) Daylighting member and daylighting device
JP6492357B2 (ja) 採光システムおよび天井構造体
JP6684709B2 (ja) 採光装置
JP6757467B2 (ja) 採光装置
WO2018151136A1 (fr) Dispositif d'éclairage naturel
WO2018051968A1 (fr) Dispositif d'éclairage
WO2018066264A1 (fr) Lamelle d'éclairage naturel et dispositif d'éclairage naturel
WO2018012401A1 (fr) Lamelle et store

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18738621

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18738621

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP