WO2016002761A1 - Dispositif d'éclairage naturel - Google Patents

Dispositif d'éclairage naturel Download PDF

Info

Publication number
WO2016002761A1
WO2016002761A1 PCT/JP2015/068795 JP2015068795W WO2016002761A1 WO 2016002761 A1 WO2016002761 A1 WO 2016002761A1 JP 2015068795 W JP2015068795 W JP 2015068795W WO 2016002761 A1 WO2016002761 A1 WO 2016002761A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
daylighting
incident
angle distribution
angle
Prior art date
Application number
PCT/JP2015/068795
Other languages
English (en)
Japanese (ja)
Inventor
英臣 由井
豪 鎌田
俊 植木
俊平 西中
透 菅野
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP2016531385A priority Critical patent/JP6684709B2/ja
Publication of WO2016002761A1 publication Critical patent/WO2016002761A1/fr

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
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements

Definitions

  • the present invention relates to a daylighting apparatus.
  • This application claims priority based on Japanese Patent Application No. 2014-135751 filed in Japan on July 1, 2014, the contents of which are incorporated herein by reference.
  • Patent Document 1 a technique described in Patent Document 1 is known as a technique for efficiently guiding light incident on a window glass indoors.
  • a daylighting film in which a plurality of unit prisms having a daylighting function are formed on one surface of a translucent support is attached to the inner surface (indoor side surface) of a window glass. The light incident from the unit prism side is refracted on the surface of the unit prism, passes through the unit prism, the support, and the window glass and enters the room indoors.
  • glare light light in which a person in the room feels dazzling.
  • One aspect of the present invention is made in view of the above-mentioned problems of the prior art, and improves the daylighting performance to the ceiling regardless of the incident angle of the incident light, so that natural light (sunlight) is sufficiently obtained.
  • One of the objects is to provide a daylighting device that can be used to secure a bright environment in the room and further suppress glare light.
  • a daylighting device includes a first base material having optical transparency, and a plurality of daylighting units having optical transparency provided on a first surface of the first base material,
  • the daylighting unit has a reflection surface that reflects the light incident on the daylighting unit, and the light reflected by the reflection surface and emitted from the second surface of the first base material is the light of the first base material.
  • the characteristic of traveling toward a space on the same side as the side on which light enters the reflecting surface And an incident light angle distribution changing member that changes an incident light angle distribution of light incident on the daylighting member.
  • the incident light angle distribution changing member includes a second base material, and an angle changing unit provided on the second base material, and the light incident on the lighting member. It is good also as a structure which changes the incident light angle distribution of the said light by refracting or scattering by the said angle change part.
  • the daylighting device may be configured such that the second base material has a region where the angle changing unit is provided and a region where the angle changing unit is not provided.
  • the daylighting device may be configured such that the region where the angle changing unit is not provided is a transmission region through which light is transmitted without being refracted or scattered.
  • the incident light angle distribution changing member includes light transmitting portions and light shielding portions that are alternately arranged along a direction parallel to the first surface of the first base material.
  • the incident light angle distribution of the light is changed by controlling transmission of light by the light transmitting portion and blocking of light by the light shielding portion according to an incident angle of light incident on the incident light angle distribution changing member.
  • a configuration may be adopted.
  • the incident light angle distribution changing member is variable in an incident angle at which light is transmitted by the light transmitting portion and an incident angle at which light is blocked by the light shielding portion. It is good also as a structure.
  • the lighting device may further include a light scattering member that scatters light incident on the incident light angle distribution changing member on a light incident side of the incident light angle distribution changing member.
  • a daylighting device includes a first base material having optical transparency, and a plurality of daylighting units having optical transparency provided on a first surface of the first base material,
  • the daylighting unit has a reflection surface that reflects the light incident on the daylighting unit, and the light reflected by the reflection surface and emitted from the second surface of the first base material is the light of the first base material.
  • the characteristic of traveling toward a space on the same side as the side on which light enters the reflecting surface And an emission light angle distribution changing member that changes an emission light angle distribution of light emitted from the daylighting member.
  • the emission light angle distribution changing member includes a third base material, and an angle changing unit provided on the third base material, and is emitted from the lighting member. It is good also as a structure which changes the emitted light angle distribution of the said light by refracting or scattering light by the said angle change part.
  • the daylighting device may be configured such that the third base material includes a region in which the angle changing unit is provided and a region in which the angle changing unit is not provided.
  • the daylighting device may be configured such that the region where the angle changing unit is not provided is a transmission region through which light is transmitted without being refracted or scattered.
  • the emission light angle distribution changing member includes light transmitting portions and light shielding portions alternately arranged along a direction parallel to the first surface of the first base material.
  • the light emission angle distribution of the light is changed by controlling the transmission of the light by the light transmission part and the blocking of the light by the light shielding part according to the incident angle of the light incident on the emission light angle distribution changing member.
  • a configuration may be adopted.
  • the emission angle distribution changing member is variable in an incident angle at which light is transmitted by the light transmitting portion and an incident angle at which light is blocked by the light shielding portion. It is good also as a structure.
  • the lighting device may further include a frame that supports the daylighting member and the incident light angle distribution changing member or the outgoing light angle distribution changing member.
  • the daylighting device further includes a light shielding member and a support mechanism that supports the light shielding member in a form in which the light shielding member is suspended in a vertical direction, and at least a part of the light shielding member is in the daylighting device.
  • the daylighting member is replaced with the incident light angle distribution changing member or the outgoing light angle distribution changing member.
  • the daylighting device further includes a first substrate having optical transparency, and a second substrate having optical transparency disposed to face the first substrate, and the daylighting device according to the above aspect.
  • the daylighting member and the incident light angle distribution changing member or the emission light angle distribution changing member are disposed between the first substrate and the second substrate.
  • the daylighting property to the ceiling is improved regardless of the incident angle of incident light, and a bright indoor environment is ensured by sufficiently using natural light (sunlight).
  • a daylighting device that can suppress glare light.
  • the perspective view which shows schematic structure of the lighting apparatus of 2nd Embodiment. Sectional drawing which shows schematic structure of the lighting apparatus of 2nd Embodiment.
  • movement of the louver film which is one of the modifications of the incident light angle distribution change member in 3rd Embodiment.
  • movement of the light control roll screen which is one of the modifications of the incident light angle distribution change member in 3rd Embodiment.
  • the schematic diagram which shows an example of the room model which installed only the lighting member in the window.
  • the schematic diagram which shows an example of the room model which installed the lighting device of embodiment in the window.
  • Sectional drawing which shows schematic structure of the lighting apparatus in 4th Embodiment.
  • Sectional drawing which shows schematic structure of the lighting apparatus in 5th Embodiment.
  • the top view which shows the 1st modification of the incident light angle distribution change member in 5th Embodiment.
  • Sectional drawing which shows a mode that the lighting apparatus of 7th Embodiment was installed in the indoor inclined window.
  • the 1st figure which shows a mode that the lighting apparatus was installed in the inclined window.
  • the 2nd figure which shows a mode that the lighting apparatus was installed in the inclined window.
  • the figure for demonstrating schematic structure of the light control roll screen which is one of the modifications of the incident light angle distribution change member in 7th Embodiment, and its operation
  • Sectional drawing which shows schematic structure of the lighting apparatus in 8th Embodiment. Sectional drawing which expands and shows the principal part structure of the daylighting apparatus in 8th Embodiment.
  • FIG. 43 is a cross-sectional view of the roll screen shown in FIG. 42 taken along line E-E ′.
  • Sectional drawing which shows the 3rd modification of a multilayer window glass structure The perspective view which shows the modification of a multilayer window glass structure.
  • FIG. 55 is a diagram showing a room model including a lighting device and an illumination dimming system, and is a cross-sectional view taken along the line A-A ′ of FIG. 54.
  • the top view which shows the ceiling of a room model.
  • the graph which shows the relationship between the illumination intensity of the light (natural light) daylighted indoors by the lighting apparatus, and the illumination intensity (illumination dimming system) by an indoor lighting apparatus.
  • FIG. 1 is a sectional view showing a schematic configuration of a daylighting apparatus according to the first embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view showing an enlarged main part of the daylighting apparatus according to the first embodiment.
  • FIG. 3 is a schematic diagram illustrating an example of a room model.
  • Figure 4 is a diagram illustrating the incident angle theta IN of the incident light L IN entering the lighting apparatus, the definition of the exit angle theta OUT of emitted light L OUT emitted from the lighting device.
  • FIG. 5 is a diagram for explaining the characteristics of the conventional daylighting apparatus
  • FIG. 6 is a diagram for explaining the characteristics of the daylighting apparatus in the first embodiment.
  • the daylighting apparatus of the first embodiment is an example of a daylighting apparatus that takes sunlight into a room in a form that is attached to a window glass, for example.
  • the daylighting device 100 includes a daylighting member 1 provided on an inner surface 1003 a (indoor side surface) of a window glass 1003 and an outer surface 1003 b (outdoor side surface) of the window glass 1003.
  • the incident light angle distribution changing member 10 and the adhesive layer 8 are provided.
  • the adhesive layer 8 is provided at each peripheral portion of the daylighting member 1 and the incident light angle distribution changing member 10 and serves to adhere the daylighting member 1 and the incident light angle distribution changing member 10 to the window glass 1003, respectively.
  • the vertical direction of the paper surface coincides with the vertical direction (XY direction) of the daylighting member 1 and the incident light angle distribution changing member 10 bonded to the window glass 1003.
  • the daylighting member 1 includes a first base material (first base material) 2 having light transmittance, and a plurality of daylighting units 3 having light transmittance provided on the first surface 2 a of the first base material 2. I have. A space 4 is formed between the plurality of daylighting units 3.
  • a light-transmitting base material made of a resin such as a thermoplastic polymer, a thermosetting resin, or a photopolymerizable resin is used.
  • a light-transmitting substrate made of acrylic polymer, olefin polymer, vinyl polymer, cellulose polymer, amide polymer, fluorine polymer, urethane polymer, silicone polymer, imide polymer, or the like is used.
  • TAC triacetyl cellulose
  • PET polyethylene terephthalate
  • COP cycloolefin polymer
  • PC polycarbonate
  • PEN polyethylene naphthalate
  • PES polyethersulfone
  • a light-transmitting substrate such as a film or a polyimide (PI) film is preferably used.
  • a PET film having a thickness of 100 ⁇ m is used as an example.
  • the total light transmittance of the first substrate 2 is preferably 90% or more as defined in JIS K7361-1. Thereby, sufficient transparency can be obtained.
  • the thickness of the first substrate 2 is arbitrary, and may be a film shape or a plate shape. Moreover, the laminated structure by which a several base material is laminated
  • the daylighting unit 3 is made of an organic material having light transmissivity and slow release properties such as acrylic resin, epoxy resin, and silicone resin.
  • a mixture made of a transparent resin in which a polymerization initiator, a coupling agent, a monomer, an organic solvent and the like are mixed with these resins can be used.
  • the polymerization initiator may contain various additional components such as a stabilizer, an inhibitor, a plasticizer, a fluorescent brightening agent, a mold release agent, a chain transfer agent, and other photopolymerizable monomers. .
  • a plurality of daylighting sections 3 are formed on the first base material 2 using a thermal imprint method.
  • the method for forming the daylighting unit 3 is not limited to the thermal imprint method, and for example, a UV imprint method, a hot press method, an injection molding method, an extrusion molding method, a compression molding method, or the like may be used.
  • a UV imprint method a hot press method
  • an injection molding method a hot press method
  • an injection molding method an extrusion molding method
  • a compression molding method or the like.
  • the first base material 2 and the daylighting unit 3 are integrally formed of the same resin.
  • polymethyl methacrylate PMMA
  • the total light transmittance of the daylighting unit 3 is preferably 90% or more in accordance with JIS K7361-1. Thereby, sufficient transparency can be obtained.
  • the daylighting section 3 extends in a straight line in one direction (a direction perpendicular to the paper surface of FIG. 2), and a cross-sectional shape orthogonal to the longitudinal direction forms a polygonal column shape.
  • the daylighting unit 3 is a pentagon having five vertices in a cross-sectional shape cut in a direction intersecting the longitudinal direction thereof, and all inner angles are less than 180 °.
  • the plurality of daylighting units 3 are arranged in parallel in the width direction, with each longitudinal direction parallel to one side of the rectangular first base material 2.
  • the daylighting unit 3 has an asymmetric shape on both sides around the perpendicular M of the surface 3a passing through the vertex q farthest from the surface 3a facing the first surface 2a of the first base material 2.
  • the plurality of daylighting units 3 are arranged in a state in which the large volume side (the surface 3d and the surface 3e side) is unified downward with the vertical line M of the surface 3a in each center.
  • the cross-sectional shape of the daylighting unit 3 is not limited to a polygonal column shape such as a pentagon.
  • the daylighting unit 3 only needs to be asymmetrical with respect to an arbitrary perpendicular line of the surface 3a.
  • the daylighting member 1 it is only necessary that a prism structure having a lower volume equal to or larger than an upper volume in a cross-sectional shape is continuously formed.
  • the refractive index of the adhesive layer 8 is preferably equal to the refractive index of the window glass 1003. Thereby, refraction does not occur at the interface between each of the daylighting member 1 and the incident light angle distribution changing member 10 and the window glass 1003.
  • each daylighting section 3 faces the horizontal direction
  • the arrangement direction of the plurality of daylighting sections 3 faces the vertical direction. Affixed to the inner surface 1003a.
  • the incident light angle distribution changing member 10 includes a second base material (second base material) 11 having optical transparency, a plurality of angle changing units 12 provided on the first surface 11a side of the second base material 11, It is configured with. A space 4 is formed between the plurality of angle changing portions 12.
  • Examples of the material of the second base material 11 include the same materials as those of the first base material 2 of the daylighting member 1 described above. In this embodiment, a PET film having a thickness of 100 ⁇ m is used as an example.
  • the total light transmittance of the second base material 11 is preferably 90% or more according to JIS K7361-1.
  • the material of the angle changing unit 12 may be the same material as the daylighting unit 3 of the daylighting member 1 described above.
  • polymethyl methacrylate (PMMA) is used as an example of the angle changing unit 12.
  • the total light transmittance of the angle changing unit 12 is preferably 90% or more in accordance with JIS K7361-1.
  • the angle changing unit 12 is a prism structure that is elongated in a straight line in one direction (a direction perpendicular to the paper surface of FIG. 2), and a cross-sectional shape perpendicular to the longitudinal direction forms a triangular prism shape.
  • the angle changing unit 12 is a triangle having three vertices in a cross-sectional shape cut in a direction intersecting the longitudinal direction, and an apex angle not contacting the second base material 11 is 90 ° or more.
  • the plurality of angle changing units 12 are arranged in parallel in the width direction, with each longitudinal direction parallel to one side of the rectangular second base material 11.
  • the angle changing unit 12 includes a light incident surface 12a that is in contact with the first surface 11a of the second base material 11, a light emitting surface 12b that faces the light incident surface 12a, a light incident surface 12a, and a light emitting surface 12b. And an end face 12c connecting the two.
  • the angle changing unit 12 is a structure in which a cross-sectional shape in which the shapes of both sides of the light incident surface 12a passing through the vertex Q that does not exist on the light incident surface 12a are asymmetric is formed in a triangular shape.
  • the lower volume including the light exit surface 12b is larger than the upper volume including the end surface 12c.
  • the plurality of angle changing units 12 are arranged in a state in which the large volume side (light emission surface 12b side) is unified downward with the vertical line N of the light incident surface 12a as the center. In the present embodiment, the plurality of angle changing units 12 are provided without gaps.
  • the adhesive layer 8 is formed so that the longitudinal direction of each angle changing unit 12 faces the horizontal direction and the arrangement direction of the plurality of angle changing units 12 faces the vertical direction. It is affixed on the outer surface 1003b of the window glass 1003.
  • the light that directly reaches from the sun is incident on the incident light angle distribution changing member 10 installed on the outdoor side of the window glass 1003. After being refracted by the incident light angle distribution changing member 10, the sunlight passes through the window glass 1003 and enters the daylighting member 1 obliquely from above.
  • sunlight enters the incident light angle distribution changing member 10 from the second surface (second surface) 11 b side of the second base material 11, and the light emitting surface 12 b (light emitting surface) of the angle changing unit 12. 12b and the gap 4) is refracted and emitted.
  • the light L1 emitted from the incident light angle distribution changing member 10 passes through the window glass 1003 and then enters the daylighting unit 3 of the daylighting member 1.
  • the light L1 is refracted on the surface 3c of the daylighting unit 3, is then totally reflected on the surface 3e and travels obliquely upward, and the second surface 2b (the second surface 2b and the indoor space between the first base material 2 and the interior space). Ejected from the interface to the ceiling.
  • an incident point E is defined as a point at which any one light beam incident on the daylighting unit 3 shown in FIG. 2 is incident on the surface 3e (reflection surface) of the daylighting unit 3.
  • a virtual straight line passing through the incident point E and orthogonal to the first surface 2a of the first base material 2 is defined as a straight line f.
  • the space on the side where the light L incident on the incident point E exists is defined as the first space S1, and the light L incident on the incident point E exists
  • the space on the side not to be used is defined as a second space S2.
  • the light L1 incident from the surface 3c of the daylighting unit 3 is totally reflected by the surface 3e of the daylighting unit 3, travels obliquely upward, that is, toward the first space S1, and is emitted from the surface 3a of the daylighting unit 3.
  • the light L2 emitted from the daylighting unit 3 passes through the first base material 2 and travels from the daylighting member 1 toward the indoor ceiling.
  • the light emitted from the daylighting member 1 toward the ceiling is reflected by the ceiling and illuminates the room, so that it becomes a substitute for illumination light. Therefore, when such a daylighting member 1 is used, an energy saving effect that saves energy consumed by lighting equipment in the building during the day can be expected.
  • the room model 1000 is a model that assumes use of the daylighting apparatus 100 in an office, for example.
  • a room model 1000 shown in FIG. 3 is a room surrounded by a ceiling 1001, a floor 1002, a front side wall 1004 to which a window glass 1003 is attached, and a back side wall 1005 facing the front side wall 1004.
  • 1006 illustrates a case where outdoor light L is incident obliquely from above through the window glass 1003.
  • the daylighting device 100 is attached to the upper side of the inner surface of the window glass 1003.
  • the height dimension (dimension from the ceiling 1001 to the floor 1002) H of the room 1006 is 2.7 m
  • the vertical dimension H2 of the window glass 1003 is 1.8 m from the ceiling 1001
  • the vertical dimension of the daylighting member 1 H1 is 0.6 m from the ceiling 1001.
  • the room model 1000 there are a person Ma sitting on a chair in the room 1006 and a person Mb standing on the floor 1002 in the back of the room 1006.
  • the eye height lower limit Ha of the person Ma sitting on the chair is set to 0.8 m from the floor 1002
  • the eye height upper limit Hb of the person Mb standing on the floor 1002 is set to 1.8 m from the floor 1002.
  • a region (hereinafter referred to as a glare region) G that makes the people Ma and Mb in the room 1006 feel dazzled is a range of eye heights Ha and Hb of the people Ma and Mb in the room.
  • the vicinity of the window glass 1003 in the room 1006 is a region F where the outdoor light L is directly irradiated through the lower side of the window glass 1003 to which the daylighting member 1 is not attached.
  • This region F is in the range of 1 m from the side wall 1004 on the near side.
  • the glare region G is a range from a position 1 m away from the front side wall 1004 excluding the region F to the back side wall 1005 in the height range of 0.8 m to 1.8 m from the floor 1002. .
  • the glare area G is an area defined based on the position of the eye in the area where the person moves. Even if the room 1006 is brightly illuminated by the light traveling toward the ceiling 1001, the person in the room 1006 tends to feel uncomfortable if there is a lot of light reaching the glare region G.
  • the daylighting member 1 of the present embodiment can relatively increase the luminance of the light toward the ceiling 1001 while reducing the luminance of the light toward the glare region G out of the light L incident on the room 1006 through the window glass 1003. It is possible.
  • the light L ′ reflected by the ceiling 1001 illuminates the room 1006 brightly over a wide area, instead of the illumination light. In this case, by turning off the lighting equipment in the room 1006, an energy saving effect that saves the energy consumed by the lighting equipment in the room 1006 during the day can be expected.
  • the incident angle theta IN of at least incident light L IN entering each lighting unit 3 of the lighting member 1 is, 20 ° ⁇ ⁇ IN ⁇ 50 in ° to the normal of the lighting member 1 when in range, the injection angle theta OUT of emitted light L OUT emitted from the lighting member 1, 0 ° ⁇ ⁇ OUT ⁇ on the same side (+ side) and the incident light L iN with respect to the normal of the lighting member 1 In the range of 15 °, the luminance of the emitted light L OUT is set to be relatively high.
  • the luminance of the light toward the ceiling 1001 is relatively reduced while the luminance of the light toward the glare region G and the light toward the floor 1002 is reduced. It is possible to increase it. That is, the light L incident on the room 1006 through the daylighting apparatus 100 and the window glass 1003 can be efficiently emitted toward the ceiling 1001. Further, the light L toward the ceiling 1001 can be irradiated to the back of the room 1006 without causing the people Ma and Mb in the room 1006 to feel dazzling.
  • the light L ′ reflected by the ceiling 1001 illuminates the room 1006 brightly over a wide area, instead of illumination light.
  • an energy saving effect that saves the energy consumed by the lighting equipment in the room 1006 during the day can be expected.
  • ⁇ IN > ⁇ OUT is satisfied within a range of 20 ° ⁇ ⁇ IN ⁇ 50 °.
  • FIG. 5 is a diagram for explaining the characteristics of a conventional daylighting apparatus.
  • the conventional daylighting apparatus 900 has a configuration including only the daylighting member 901 that is attached to the inner surface 1003 a of the window glass 1003.
  • the daylighting member 901 has a daylighting structure in which a large amount of light can be emitted toward the ceiling in a range of an arbitrary solar altitude (incident angle) and the glare light that a person in the room feels dazzling. Yes.
  • the daylighting performance of the daylighting apparatus 900 optical characteristics that can irradiate a wide area of the ceiling from the vicinity of the window toward the interior of the room and do not irradiate glare light that a person in the room feels dazzling are desired.
  • the daylighting device 900 since the incident angle of sunlight incident on the daylighting device 900 changes as a whole when the latitude and orientation of the window in which the daylighting device 900 is installed changes, the daylighting device 900 made on the assumption of an arbitrary solar altitude. Then, the performance cannot be fully exhibited.
  • the daylighting function for emitting sunlight toward the indoor ceiling may be reduced due to differences in the latitude or orientation of the building (window), the inclination of the installation location of the daylighting device 900, etc. It may make you feel uncomfortable glare. That is, the conventional daylighting apparatus 900 has an incident angle of incident light that can irradiate light on a wide range of the ceiling and an incident angle of incident light that causes glare light that makes a person in the room feel dazzling. is there.
  • FIG. 6 is a diagram for explaining the characteristics of the daylighting apparatus according to the first embodiment.
  • the daylighting device 100 of this embodiment arranges the incident light angle distribution changing member 10 on the light incident side of the daylighting member 1 having good daylighting characteristics at an arbitrary solar altitude (incidence angle), thereby providing a daylighting member.
  • the angle of the light incident on 1 is changed. That is, the incident angle of light incident on the incident light angle distribution changing member 10 is different from the angle of light incident on the daylighting member 1.
  • the installation location and the installation posture are different, it is possible to correct the amount of change in the incident light that is shifted as a whole, and to enter the corrected light into the daylighting member 1, so that at any solar altitude It is possible to maintain good daylighting characteristics.
  • the daylighting apparatus 100 it is possible to improve the daylighting characteristics to the ceiling regardless of the incident angle of the incident light, and to secure a bright environment in the room that sufficiently uses natural light (sunlight). At the same time, glare light that a person in the room feels dazzling can be suppressed, so that the indoor environment becomes comfortable.
  • the incident light angle distribution changing member 10 is not limited to the above-described configuration, and it is sufficient that the angle of light incident on the daylighting member 1 can be changed.
  • the incident light angle distribution changing member 10 may be any member that can control the angle of light by refracting, reflecting, or scattering light.
  • FIG. 7A to FIG. 7E are diagrams showing modifications of the daylighting device in the first embodiment.
  • the incident light angle distribution changing member 10 may be arranged with the second base material 11 side facing the daylighting member 1. Even in such a configuration, the effect of suppressing glare light can be obtained in the same manner as described above.
  • an ultraviolet-ray cut film is formed in the 2nd base material 11 side (light incident side) of the incident light angle distribution change member 10 arrange
  • the ultraviolet cut film 13 cuts ultraviolet light out of incident light. Thereby, deterioration with time, such as discoloration of the incident light angle distribution changing member 10 and the daylighting member 1, can be prevented.
  • the light scattering film 14 may be disposed on the light incident side of the daylighting member 1 instead of the incident light angle distribution changing member 10.
  • the light scattering film 14 diffuses incident light and emits it. Thereby, glare of the light emitted into the room can be suppressed.
  • an anisotropic light diffusion film 15 may be disposed on the light emission side of the daylighting member 1.
  • the anisotropic light diffusion film 15 diffuses a lot of light in the extending direction (horizontal direction) of the daylighting unit 3. Thereby, the brightness nonuniformity resulting from the change of the incident angle of sunlight is relieved, and the whole room can be brightened.
  • the incident light angle distribution changing member 10 and the daylighting member 1 ′ may be installed on the indoor side surface of the window glass 1003.
  • the incident light angle distribution changing member 10 and the daylighting member 1 are bonded to each other with the second base material 11 and the first base material 2 facing each other.
  • Such a lighting device 16 may be installed on the inner surface 1003 a of the window glass 1003.
  • the cross-sectional shape of the daylighting unit 3 is not limited to the polygonal shape described above.
  • the daylighting portion 3 ′ may have a cross-sectional shape having a curved surface.
  • FIG. 8 is a perspective view showing a schematic configuration of the daylighting device of the second embodiment.
  • FIG. 9 is a cross-sectional view illustrating a schematic configuration of the daylighting device of the second embodiment.
  • the daylighting apparatus 102 of the present embodiment shown below includes an incident light angle distribution changing member 10 and a daylighting member 20, as shown in FIGS. Since the incident light angle distribution changing member 10 has the same configuration as that of the first embodiment, the description of common portions is omitted in the following description. Moreover, in each drawing used for description, the same reference numerals are given to components common to the first embodiment.
  • the daylighting member 20 includes a plurality of daylighting units 21 and a frame member (supporting member) 22 that supports the plurality of daylighting units 21.
  • the daylighting unit 21 is a structure in which a cross section in a direction intersecting the longitudinal direction has a substantially triangular prism shape.
  • the daylighting unit 21 is manufactured by cutting out from an aluminum ingot using a milling machine or the like.
  • the daylighting unit 21 has a reflecting surface 21 b that reflects light incident on the daylighting unit 21.
  • the plurality of daylighting units 21 are arranged in parallel to each other with an interval in the direction intersecting the longitudinal direction, with each reflecting surface 21b facing upward.
  • end portions 21 a and 21 a on both sides in the longitudinal direction are fixed to the inner wall surface 22 b of the frame member 22.
  • the frame member 22 is a frame-like member having a rectangular opening 22A in plan view, and has a size that can accommodate a plurality of daylighting portions 21.
  • Sunlight first enters the incident light angle distribution changing member 10 installed on the outdoor side of the window glass 1003. After being refracted by the incident light angle distribution changing member 10, sunlight passes through the window glass 1003 and enters the daylighting member 20 obliquely from above.
  • an incident point E is defined as a point at which any one light beam incident on the daylighting unit 21 shown in FIG.
  • a virtual straight line passing through the incident point E and orthogonal to the arrangement direction (Y direction) of the daylighting portions 21 is defined as a straight line f.
  • the space on the side where the light L incident on the incident point E exists is defined as the first space S1
  • the light L incident on the incident point E exists is defined as a second space S2.
  • the light L incident on the daylighting member 20 is totally reflected by the reflecting surface 21b of the daylighting unit 21, and proceeds obliquely upward, that is, toward the first space S1. In this way, the light L emitted from the daylighting member 20 travels toward the ceiling in the room, and reflects off the ceiling to illuminate the room.
  • the frame member 22 is used as a support member that supports the plurality of daylighting units 21.
  • the present invention is not limited to this, and the plurality of daylighting units 21 may be supported by other members. .
  • the incident light angle distribution changing member 10 is provided on the outside surface 1003 b on the outdoor side of the window glass 1003, but for example, as shown in FIG. 11.
  • the incident light angle distribution changing member 10 may be installed on the inner surface 1003a on the indoor side of the window glass 1003. That is, the daylighting apparatus 102 may be installed on either the outdoor side or the indoor side of the window glass 1003. However, the incident light angle distribution changing member 10 is disposed on the light incident side of the daylighting member 20.
  • FIG. 12A and 12B are schematic configuration diagrams showing a modification of the daylighting device according to the second embodiment.
  • an incident light angle distribution changing member 10 ′ in which a plurality of angle changing portions 12 are arranged at a predetermined interval on the first surface 11 a of the second base material 11 may be used.
  • a daylighting member 25 including a plurality of light shelves 24 on one surface side of the base material 23 may be used.
  • FIG. 12B an example in which the light shelf 24 is disposed indoors with respect to the window glass 1003 is illustrated, but the present invention is not limited to this, and the incident light angle distribution changing member 10 ′ is disposed on the outdoor side.
  • a light shelf 24 may be arranged. It is also possible to arrange the incident light angle distribution changing member 10 'on the indoor side.
  • FIG. 13 is a cross-sectional view illustrating a schematic configuration of a daylighting apparatus according to the third embodiment.
  • region enclosed with the dashed-two dotted line in FIG. 13 is a figure which expands and shows the principal part of a lighting apparatus.
  • the configuration of the daylighting member 1 is the same as that of the first embodiment, but the configuration of the incident light angle distribution changing member 30 is different from that of the first embodiment. Therefore, in the following description, the description of the configuration of the daylighting member is omitted, and the configuration of the incident light angle distribution changing member 30 will be described in detail.
  • the incident light angle distribution changing member 30 in the present embodiment is alternately arranged in the vertical direction (Y direction) so that the plurality of light transmission layers 31 and the plurality of light shielding layers 32 form the light incident surface 30a and the light emission surface 30b. It has a laminated structure.
  • the distance (pitch P) between the light shielding layers 32 adjacent to each other via the light transmission layer 31 and the dimension (width W) in the direction intersecting the length direction of the light shielding layer 32 are determined depending on the use condition of the daylighting device 103 and the like. Set as appropriate. What is important here is that the distance (pitch P) and the dimension (width W) are set so as to be able to absorb light that is not desired to enter the daylighting member 1, that is, light that may become glare light.
  • the incident light angle distribution changing member 30 transmits only the light L incident at a predetermined angle. Therefore, only the light transmitted through the incident light angle distribution changing member 30 enters the daylighting member 1.
  • the incident light angle distribution changing member 30 may be configured such that the incident angle at which light is transmitted by the light transmission layer 31 and the incident angle at which light is blocked by the light shielding layer 32 are variable.
  • FIG. 14A and FIG. 14B are diagrams for explaining a schematic configuration and operation of a louver film 301 which is one of modified examples of the incident light angle distribution changing member in the third embodiment.
  • the louver film 301 includes a plurality of light shielding louvers (light shielding portions) 132 arranged at a predetermined pitch in the vertical direction (Y direction) so as to form parallel surfaces 301a and 301b. Between the light shielding louvers 132, a light transmitting layer (light transmitting portion) 131 having a light transmitting property is formed. In the present embodiment, an air layer is formed.
  • the louver film 301 is configured such that the inclination angle of each light shielding louver 132 can be adjusted. Specifically, the interface between the light shielding louver 132 and the light transmission layer 131 is perpendicular to the perpendicular M of the surfaces 301a and 301b, and the interface is at a predetermined angle ⁇ with respect to the perpendicular M of the surfaces 301a and 301b. It can be changed to an inclined posture.
  • the light shielding louver 132 is in a posture in which the interface with the light transmission layer 131 is perpendicular to the perpendicular M of the surfaces 301a and 301b.
  • incident light light having a high incident angle out of sunlight
  • incident light out of sunlight
  • the solar altitude is high.
  • Light with a low incident angle can be absorbed by the light shielding louver 132.
  • the light shielding louver 132 is tilted with respect to the perpendicular M of the surfaces 301a and 301b so that the interface with the light transmission layer 131 is inclined at a predetermined angle ⁇ .
  • incident light light at a low incident angle of sunlight
  • incident light of sunlight is high
  • Light having a high incident angle can be absorbed by the light shielding louver 132.
  • the plurality of light shielding louvers 132 are movable, but the present invention is not limited to this.
  • the postures of the plurality of light shielding louvers 132 may be fixed such that the interface between the light shielding louvers 132 and the light transmission layer 131 is perpendicular to the perpendicular M of the surfaces 301a and 301b.
  • FIG. 14A the postures of the plurality of light shielding louvers 132 may be fixed such that the interface between the light shielding louvers 132 and the light transmission layer 131 is perpendicular to the perpendicular M of the surfaces 301a and 301b.
  • the postures of the plurality of light shielding louvers 132 are such that the interface between the light shielding louvers 132 and the light transmission layer 131 is inclined at a predetermined angle ⁇ with respect to the perpendicular M of the surfaces 301a and 301b. It may be fixed.
  • the present invention can also be applied to a blind provided with a plurality of slats as an alternative to the shading louver 132.
  • FIG. 15A and FIG. 15B are diagrams for explaining a schematic configuration and operation of a light control roll screen 302 which is one of modifications of the incident light angle distribution changing member in the third embodiment.
  • the light control roll screen 302 includes a pair of support rollers 133 and 134, and an annular screen 135 spanned between the pair of support rollers 133 and 134.
  • the screen 135 is formed by alternately arranging a plurality of light blocking portions 136 and a plurality of light transmitting portions 137 at a predetermined pitch.
  • the light control roll screen 302 adjusts the position of the light-shielding part 136 by moving the screen 135 by simultaneously rotating the support rollers 133 and 134 clockwise or counterclockwise.
  • a straight line passing through the centers of the support rollers 133 and 134 is N.
  • the screen 135 shown in FIG. 15A is in a state where the positions of the light shielding portions 136 and the positions of the light transmitting portions 137 existing on both sides of the center line N are matched in the vertical direction (Y direction). That is, the light shielding parts 136 face each other through the center line N, and the light transmission parts 137 face each other.
  • the screen 135 transmits incident light (low incident angle light of sunlight) through the light transmitting portion 137 when the solar altitude is low, and incident light (high incident angle of sunlight out of the sunlight) when the solar altitude is high. Light) can be absorbed by the light shielding portion 136.
  • the screen 135 is rotated so that the positions of the light shielding portions 136 and the positions of the light transmitting portions 137 existing on both sides of the center line N are made different in the vertical direction (Y direction).
  • the entire light shielding unit 136 is opposed to the light transmission unit 137 via the center line N.
  • the louver film 301 and the light control roll screen 302 can be provided on the outdoor side of the window glass 1003 respectively, but it is preferable to arrange them on the indoor side. Even in this case, the louver film 301 and the light control roll screen 302 are arranged on the light incident side of the daylighting member 1.
  • FIG. 16A is a schematic diagram illustrating an example of a room model in which only the daylighting member 1 is installed in a window. As shown in FIG. 16A, if only the lighting member 1 is installed in the window of the room, light reaching the glare region G is emitted depending on the solar altitude and installation conditions, and the people Ma and Mb in the room are dazzling. There was a risk of feeling.
  • FIG. 16B is a schematic diagram illustrating an example of a room model in which the daylighting device 103 of the present embodiment is installed in a window.
  • the daylighting device 103 described above includes the incident light angle distribution changing member 30 (the louver film 301 and the light control roll screen 302) on the light incident side of the daylighting member 1.
  • the incident light angle distribution changing member 30 can control the light incident on the daylighting member 1 so that the light emitted from the daylighting member 1 into the room does not become glare light. This makes it possible to efficiently emit sunlight incident on the daylighting device 103 toward the indoor ceiling 1001, thereby realizing a bright indoor environment.
  • FIG. 17 is a cross-sectional view illustrating a schematic configuration of the daylighting device according to the fourth embodiment.
  • region enclosed with the dashed-two dotted line circle in FIG. 17 is a figure which expands and shows the principal part of a lighting apparatus.
  • the daylighting device 104 of the present embodiment is different from the third embodiment in that a light scattering film (light scattering member) 40 is provided on the light incident side of the incident light angle distribution changing member 30.
  • the light scattering film 40 is bonded to the light incident surface 30 a of the incident light angle distribution changing member 30 via the adhesive layer 8 disposed on the peripheral edge.
  • the light scattering film 40 can be formed, for example, by curing a binder resin using a curable composition (a composition for forming a light scattering layer) in which light scattering particles and a binder resin are blended.
  • FIG. 18 is a diagram for explaining the daylighting characteristics of the daylighting apparatus according to the fourth embodiment. As shown in FIG. 18, by arranging the light scattering film 40 on the light incident side of the incident light angle distribution changing member 30, light isotropically scattered by the light scattering film 40 is incident regardless of the solar altitude. It enters the light angle distribution changing member 30.
  • the daylighting device 104 of the present embodiment scatters even light that may become glare light by scattering it on the light scattering film 40 before entering the incident light angle distribution changing member 30.
  • the light passes through the light transmission layer 31 and is collected. Accordingly, it is possible to maintain the daylighting effect without glare regardless of the solar altitude and to emit more light toward the indoor ceiling.
  • the light scattering film 40 is not limited to the above-described configuration, and may be a member having anisotropic scattering characteristics that scatters light in the longitudinal direction of the daylighting portion 3 of the daylighting member 1, for example.
  • FIG. 19 is a cross-sectional view illustrating a schematic configuration of the daylighting device 105 according to the fifth embodiment.
  • FIG. 20 is an enlarged cross-sectional view illustrating the main configuration of the daylighting apparatus 105 according to the fifth embodiment.
  • the daylighting device 105 of the present embodiment includes the daylighting member 1 and the incident light angle distribution changing member 50.
  • the incident light angle distribution changing member 50 includes a second base material 11 having optical transparency and a plurality of angle changing units 12 provided on the first surface 11a side of the second base material 11. Yes.
  • 2nd base material 11 has field R1 in which angle change part 12 was provided, and field R2 in which angle change part 12 was not provided.
  • the region R2 where the angle changing unit 12 is not provided is a transmission region through which light passes without being refracted or scattered.
  • the incident angles of all the lights incident on the incident light angle distribution changing member 50 instead of changing the incident angles of all the lights incident on the incident light angle distribution changing member 50, the incident angles of some of the lights are changed, and the incident angles of the remaining lights are not changed.
  • the light By transmitting the light, light having different angles enters the daylighting member 1.
  • emitted from the lighting member 1 and by extension, the lighting apparatus 105 can be varied. That is, the light distribution of the light emitted from the daylighting device 105 is averaged, and the daylighting effect can be obtained in a wider angle range. As a result, the ceiling can be illuminated over a wide area.
  • FIG. 21A is plan views showing modifications of the incident light angle distribution changing member in the fifth embodiment.
  • an incident light angle distribution changing member 151 in which a region R1 in which the angle changing unit 12 is arranged and a transmission region R2 in which the angle changing unit 12 is not arranged may be provided in a stripe shape.
  • the longitudinal directions of the region R1 and the region R2 coincide with the longitudinal direction (X direction) of the daylighting device 105, that is, the longitudinal direction of the daylighting unit 3 of the daylighting member 1.
  • the region R1 in which the angle changing unit 12 is arranged and the transmission region R2 in which the angle changing unit 12 is not arranged are in the vertical direction (Y direction) and the horizontal direction (X direction). It is good also as the incident light angle distribution change member 152 provided alternately.
  • an incident light angle distribution changing member 153 in which a plurality of angle changing units 12 are arranged at intervals may be used. Thereby, a portion where one angle changing unit 12 is arranged becomes a region R1, and a region between adjacent angle changing units 12 becomes a transmission region R2.
  • FIG. 22A to 22C are cross-sectional views showing modifications of the daylighting device according to the fifth embodiment.
  • an ultraviolet cut film is formed on the second base material 11 side (light incident side) of the incident light angle distribution changing member 50 arranged with the angle changing unit 12 side facing the daylighting member 1. 13 may be arranged. Thereby, deterioration with time, such as discoloration of the incident light angle distribution changing member 10 and the daylighting member 1, can be prevented.
  • an anisotropic light diffusion film 15 may be disposed on the light emission side of the daylighting member 1.
  • the anisotropic light diffusion film 15 diffuses a lot of light in the extending direction (horizontal direction) of the daylighting unit 3. Thereby, the brightness nonuniformity resulting from the change of the incident angle of sunlight is relieved, and the whole room can be brightened.
  • the daylighting section 3 of the daylighting member 1 may be installed in a state facing the opposite side to the incident light angle distribution changing member 50.
  • the cross-sectional shape of the daylighting unit 3 is not limited to the polygonal shape described above.
  • the daylighting portion 3 ′ may have a cross-sectional shape having a curved surface.
  • FIG. 23 is a cross-sectional view illustrating a schematic configuration of the daylighting device according to the sixth embodiment.
  • FIG. 24 is an enlarged cross-sectional view illustrating a main part of the daylighting device according to the sixth embodiment. In FIG. 24, the scale of the window glass 1003 is changed in order to make the configuration of the daylighting device easier to understand.
  • FIG. 25 is a cross-sectional view showing a state in which a daylighting device is installed on an inclined window.
  • the daylighting device 106 includes a daylighting member 1 provided on the outer surface 1003b (outdoor side surface) of the window glass 1003 and an inner surface 1003a (inner side surface of the window glass 1003). ) And an adhesive light angle distribution changing member 60 and an adhesive layer 8.
  • the daylighting member 1 and the outgoing light angle distribution changing member 60 are installed indoors and outdoors in a posture in which the respective daylighting units 3 and the angle changing unit 62 are directed in directions opposite to each other.
  • the emission light angle distribution changing member 60 in the present embodiment has the same configuration as the incident light angle distribution changing member 10 described above.
  • the daylighting member 1 is installed in a state in which the daylighting unit 3 faces outward and the second surface 2b side of the first base material 2 is opposed to the outer surface 1003b of the window glass 1003.
  • the emission light angle distribution changing member 60 has the angle changing portion 12 facing the indoor side, and the second surface 61b side of the third base material (third substrate) 61 faces the inner surface 1003a of the window glass 1003. is set up.
  • Such a daylighting device 106 is installed on an inclined window glass 1003 as shown in FIG.
  • the emission light angle distribution changing member 60 for controlling the light emission angle is arranged on the light emission surface side of the daylighting device 106.
  • the performance of the daylighting device 106 can be sufficiently exhibited.
  • the lighting device 106 can adopt any known structure as long as it changes incident light toward the ceiling.
  • the emission light angle distribution changing member 60 may be any member that controls the light emission angle by refracting, reflecting, or scattering light.
  • FIG. 26A to FIG. 26H are cross-sectional views showing modifications of the daylighting device according to the sixth embodiment.
  • an emission light angle distribution changing member 63 in which a plurality of angle changing portions 62 are arranged at a predetermined interval on one surface side of the second base material 61 may be used.
  • the emission light angle distribution changing member 60 may be installed in a posture in which the angle changing unit 62 side is directed to the daylighting member 1.
  • the lighting member 1 and the emission light angle distribution changing member 63 bonded to each other of the base materials 2 and 61 may be installed inside the window glass 1003.
  • a daylighting member 1 ′ including a daylighting portion 3 ′ having a curved cross-sectional shape may be provided instead of the daylighting member 1.
  • the daylighting member 1 ′ is installed in a posture in which the daylighting part 3 ′ side faces the window glass 1003.
  • the light scattering film 14 may be provided on the light emission side of the daylighting member 1 instead of the emission light angle distribution changing member 60.
  • the light scattering film 14 is attached to, for example, the indoor side surface (inner surface 1003a) of the window glass 1003.
  • the anisotropic light diffusion film 15 may be disposed on the light emission side of the emission light angle distribution changing member 63.
  • the anisotropic light diffusion film 15 diffuses a large amount of light emitted from the emitted light angle distribution changing member 63 in the extending direction (horizontal direction) of the daylighting unit 3.
  • FIG. 26G it may be set as the structure provided with the lighting member 20 of 2nd Embodiment mentioned above instead of the lighting member 1.
  • FIG. 26H it may be set as the structure provided with the lighting member 20 of 2nd Embodiment mentioned above instead of the lighting member 1.
  • FIG. 26G The daylighting member 20 has a plurality of daylighting portions 21 and is arranged inside the window glass 1003 and on the light incident side of the emission light angle distribution changing member 63.
  • a daylighting member 25 including a plurality of light shelves 24 on one surface side of the base material 23 may be used.
  • a film that cuts only a specific wavelength such as ultraviolet rays or infrared rays may be disposed on the light emission side of the daylighting apparatus.
  • each component constituting the daylighting device is not limited to the above-described example, and can be changed as appropriate.
  • FIG. 27 is a cross-sectional view illustrating a state in which the daylighting device according to the seventh embodiment is installed in an inclined window in a room.
  • region enclosed with the dashed-two dotted line circle in a figure is a figure which expands and shows the principal part of the emission light angle distribution change member of 7th Embodiment.
  • the lighting device 107 in this embodiment is provided on the lighting member 1 provided on the outer surface 1003b (outdoor side surface) of the window glass 1003 and the inner surface 1003a (inner side surface) of the window glass 1003.
  • the emission light angle distribution changing member 70 and the adhesive layer 8 are included.
  • the emitted light angle distribution changing member 70 in the present embodiment has a configuration in which a plurality of light transmission layers 71 and a plurality of light shielding layers 72 are alternately arranged in one direction.
  • the distance (pitch P) between the light shielding layers 72 adjacent to each other through the light transmission layer 71 and the dimension (width W) in the direction intersecting the length direction of the light shielding layer 72 are determined according to the use condition of the daylighting device 107 and the like. Set as appropriate. What is important here is that the distance (pitch P) and the dimension (width W) are set so as to absorb light that is not desired to enter the room, that is, light that may become glare light.
  • the emitted light angle distribution changing member 70 transmits only light incident at a predetermined angle. Therefore, only the light that has passed through the emission light angle distribution changing member 70 enters the daylighting member 1.
  • the emitted light angle distribution changing member 70 may be configured such that the incident angle at which light is transmitted by the light transmitting layer 71 and the incident angle at which light is blocked by the light shielding layer 72 are variable.
  • FIG. 28 is a diagram illustrating a schematic configuration of a daylighting device including a louver film 701 as a modified example of the emission light angle distribution changing member in the seventh embodiment.
  • the louver film 701 includes a plurality of light shielding louvers (light shielding portions) 172 arranged at a predetermined pitch in one direction as shown in FIG.
  • a light transmitting layer (light transmitting portion) 171 having light transmittance is provided between the light shielding louvers 172, which is an air layer in the present embodiment.
  • the louver film 701 is configured such that the inclination angle of each light shielding louver 172 can be adjusted.
  • the light shielding louver 172 is formed such that the interface between the light shielding louver 172 and the light transmission layer 171 forms a predetermined angle ⁇ with respect to the surfaces 701a and 701b formed by the plurality of light shielding louvers 172 arranged in one direction. Can change the posture.
  • the louver film 701 described above transmits the light L1 (light toward the ceiling) L1 effectively collected by the daylighting member 1 through the light transmission layer 171 and is not effectively daylighted by the daylighting member 1, but becomes glare light. Part of the obtained light L 2 can be shielded by the light shielding louver 172.
  • light L2 that becomes glare light may be emitted from the daylighting device 107 installed in the inclined window.
  • the daylighting device 73 provided with the louver film 701 As shown in FIG. 29A, depending on the solar altitude, light L2 that becomes glare light may be emitted from the daylighting device 107 installed in the inclined window.
  • the daylighting device 73 provided with the louver film 701 As shown in FIG. 29B, by changing the posture of the light shielding louver 172 according to the solar altitude, only an arbitrary incident light is transmitted, and other light is transmitted. Can be shielded from light. As a result, glare light can be suppressed.
  • the inclination angle of the light shielding louver 172 can be adjusted, but is not limited thereto.
  • the postures of the plurality of light shielding louvers 172 may be fixed in advance at a predetermined angle ⁇ with respect to the surfaces 701a and 701b shown in FIG. .
  • the present invention can also be applied to a blind provided with a plurality of slats as an alternative to the shading louver 172.
  • FIG. 30 is a diagram for explaining a schematic configuration and operation of a light control roll screen 702 which is one of modified examples of the emission light angle distribution changing member in the seventh embodiment.
  • the light control roll screen 702 includes a pair of support rollers 173 and 174, and an annular screen 175 spanned between the pair of support rollers 173 and 174.
  • the screen 175 is formed by alternately arranging a plurality of light shielding portions 176 and a plurality of light transmitting portions 177 at a predetermined pitch.
  • the light control roll screen 702 adjusts the position of the light shielding portion 176 by simultaneously rotating the support rollers 173 and 174 clockwise or counterclockwise to move the screen 175.
  • the screen 175 is rotated so that the positions of the light shielding portions 176 and the positions of the light transmitting portions 177 existing on both sides of the center line N are different in the vertical direction (Y direction).
  • the entire light-shielding portion 176 is opposed to the light transmission portion 177 with the center line N interposed therebetween.
  • the light L1 which is incident light (light having a high incident angle of sunlight) and transmitted through the daylighting member 1 (not shown) when the solar altitude is low is transmitted through the light transmitting portion 177.
  • the light L2 that is incident light (light having a low incident angle of sunlight) and transmitted through the daylighting member 1 (not shown) when the solar altitude is high can be absorbed by the light shielding unit 176.
  • FIG. 31 is a cross-sectional view illustrating a schematic configuration of the daylighting apparatus 108 according to the eighth embodiment.
  • FIG. 32 is an enlarged cross-sectional view showing the main configuration of the daylighting apparatus 108 according to the eighth embodiment.
  • the daylighting apparatus 108 of the present embodiment is configured to include the daylighting member 1 and the emission light angle distribution changing member 80.
  • the emission light angle distribution changing member 80 has the same configuration as the incident light angle distribution changing member 50 of the fifth embodiment described above. Therefore, FIG. 20 will be referred to as appropriate.
  • the emitted light angle distribution changing member 80 (second base material 11) includes a region R1 (FIG.
  • the region R2 where the angle changing unit 12 is not provided is a transmission region through which light passes without being refracted or scattered.
  • the light incident on the region R ⁇ b> 1 where the angle changing unit 12 of the emitted light angle distribution changing member 80 is disposed is refracted and emitted by the angle changing unit 12.
  • the light incident on the transmission region R ⁇ b> 2 where the angle changing unit 12 is not disposed passes through the second base material 11 as it is.
  • the lighting device 108 includes the emission light angle distribution changing member 80 described above, the entire room can be brightened. That is, the emitted light angle distribution changing member 80 has a function of making the emitted light angle distribution of the light emitted from the daylighting member 1 uniform. Thereby, the lighting effect can be obtained in a wider angle range. As a result, it is possible to illuminate the ceiling over a wide area, and the entire room can be brightened.
  • the region R1 in which the angle changing unit 12 is disposed, and the angle changing unit 12 It is possible to appropriately set the transmissive region R2 in which is not disposed.
  • FIG. 34 is a perspective view illustrating a schematic configuration and an installation state of the daylighting device according to the ninth embodiment.
  • FIG. 35 is a partial cross-sectional view showing the main parts of the daylighting device of the ninth embodiment.
  • the daylighting device 109 includes a daylighting panel 90 and a pair of mounting portions 91 and 91.
  • the daylighting panel 90 includes a daylighting sheet 92 and a frame (supporting member) 93 that supports the daylighting sheet 92.
  • the daylighting sheet 92 includes a transparent base material 94, an incident light angle distribution changing film 95 disposed on one surface side of the transparent base material 94, and a daylighting film 96 disposed on the other surface side of the transparent base material 94. Configured.
  • the transparent substrate 94, the incident light angle distribution changing film 95, and the daylighting film 96 are integrated with an adhesive (not shown).
  • the daylighting film 96 has the base material surface 96b side opposite to the daylighting surface 96a on which a plurality of daylighting portions are present bonded to one surface of the transparent base material 94.
  • the base material surface 96b side opposite to the angle changing surface 95a where a plurality of angle changing portions exist is bonded to the other surface of the transparent base material 94.
  • the bonding direction of the lighting film 96 and the incident light angle distribution changing film 95 with respect to the transparent substrate 94 is not limited to the above-described direction.
  • Such a daylighting sheet 92 is supported in a state in which the peripheral portion thereof is inserted into an aluminum frame 93.
  • the daylighting sheet 92 can be fixed to the frame 93 by being disposed in the frame 93 via an adhesive layer or a buffer material (not shown), and the daylighting part and the angle located at the peripheral part. It is possible to prevent the changed portion or the like from being damaged. Note that an adhesive layer, a buffer material, and the like are not necessarily required.
  • the incident light angle distribution changing film 95 the incident light angle distribution changing member of any of the above-described embodiments can be used. Further, any of the daylighting members described above can be used as the daylighting film 96.
  • the lighting panel 90 is installed in such a manner that the light incident surface side, that is, the angle changing surface 95a of the incident light angle distribution changing film 95 faces the window glass 1003 shown in FIG.
  • the daylighting panel 90 is fixed to the window frame 99 in the installation direction described above via a pair of mounting portions 91, 91 attached to the upper part of the frame 93.
  • the lighting panel 90 can be attached to and detached from the window frame 99 by the mounting portions 91 and 91. Therefore, the lighting device 109 can be easily attached to or detached from the window glass 1003 as compared with a configuration in which the window glass 1003 is directly attached. As a result, maintenance work and replacement work of the daylighting panel 90 can be performed efficiently. In addition, the daylighting device 109 can be increased in size, and it is possible to quickly cope with a request from a user who wants to install a large window.
  • FIG. 36A is a diagram illustrating a first modification of the daylighting panel according to the ninth embodiment.
  • the daylighting panel 97 includes a daylighting sheet 98 and a frame 93.
  • the daylighting sheet 98 is formed by integrating a pair of film bodies 98 ⁇ / b> A and 98 ⁇ / b> B by an adhesive layer (not shown) and is housed in the frame 93.
  • One film body 98A is formed by bonding, for example, a substrate surface 95b of an incident light angle distribution changing film 95 to one surface side of a transparent base 94.
  • the other film body 98 ⁇ / b> B is formed, for example, by bonding the base material surface 96 b of the daylighting film 96 to one surface side of the transparent base material 94.
  • the pair of film bodies 98A and 98B are integrated in a state in which the daylighting surface 96a of the daylighting film 96 and the angle changing surface 95a of the incident light angle distribution changing film 95 face each other, whereby the daylighting sheet 98 described above. Is configured.
  • FIG. 36B is a diagram illustrating a second modification of the daylighting panel according to the ninth embodiment.
  • the daylighting panel 84 shown in FIG. 36B is configured such that a daylighting sheet 85 including an incident light angle distribution changing film 95, a daylighting film 96, and an anisotropic light diffusion film 15 is supported by a frame 93.
  • the incident light angle distribution changing film 95, the daylighting film 96, and the anisotropic light diffusing film 15 are arranged such that the incident light angle distribution changing film 95 is disposed on the light incident side of the daylighting film 96, and the anisotropic light diffusing film is disposed on the light emitting side of the daylighting film 96.
  • the daylighting sheet 85 is configured by being arranged and integrated with each other via an adhesive (not shown).
  • the members may not be bonded to each other with an adhesive or the like.
  • the incident light angle distribution changing film 95, the daylighting film 96, and the anisotropic light diffusion film 15 are integrated in the frame 93. It is good also as a structure to be.
  • Such a daylighting panel 84 is installed such that the incident light angle distribution changing film 95 of the daylighting sheet 85 is on the window glass side and the anisotropic light diffusion film 15 is on the indoor side.
  • FIG. 36C is a diagram illustrating a third modification of the daylighting panel according to the ninth embodiment.
  • the daylighting panel 86 shown in FIG. 36C is configured such that a daylighting sheet 88 including a daylighting film 96, a transparent base 94, and an emission angle control film 87 is supported by a frame 93.
  • a daylighting panel 86 is installed with the daylighting film 96 side facing the window glass and the emission angle control film 87 side facing the indoor side.
  • injection angle control film 87 any of the above-described injection angle changing members can be used.
  • an ultraviolet cut film, an infrared cut film, a light scattering film, or the like may be appropriately combined and accommodated in the frame 93.
  • the daylighting device 109 of this embodiment provided with any one of the daylighting panels 90, 97, 84, 86 described above, it can be easily detached because it is in the form of a panel, and the presence or absence of the daylighting function can be arbitrarily determined. Can be switched. For example, a predetermined window can be installed according to the season or the like, or can be easily replaced with another window as shown in FIG. Moreover, since the optical film stored in the panel can be replaced, even when the installation location is changed, it can be rearranged into a film configuration that can obtain an optimal lighting effect.
  • FIG. 38 is a perspective view illustrating an appearance of the blind 110 according to the tenth embodiment.
  • the positional relationship (vertical, left and right, front and rear) of the blind (lighting device) 110 is based on the positional relationship (up and down, left and right, front and rear) when the blind 110 is used, and there is no particular description.
  • the positional relationship of the blinds 110 coincides with the positional relationship with respect to the paper surface.
  • the blind 110 includes a plurality of slats (light-shielding members) 112 that are spaced apart from each other and arranged in parallel in the horizontal direction, and a support mechanism 113 that supports the plurality of slats 112 so that they can be suspended in the vertical direction. It has.
  • the blind 110 supports the plurality of slats 112 so as to be movable up and down and supports the plurality of slats 112 so as to be tiltable.
  • the plurality of slats 112 includes a daylighting unit 5 constituted by a plurality of daylighting slats 114 having daylighting properties, and a light shielding unit 7 which is located below the daylighting unit 5 and constituted by a plurality of light shielding slats 116 having light shielding properties. And have.
  • the daylighting slats 114 and the light shielding slats 116 are collectively treated as the slats 112 unless otherwise distinguished.
  • the daylighting slat 114 constituting the daylighting unit 5 includes a long plate-like transparent base material 118 having light transmittance, and an incident light angle distribution change arranged on one surface side of the transparent base material 118. It is comprised from the film 119 and the daylighting film 120 arrange
  • the incident light angle distribution changing film 119 and the daylighting film 120 the incident light angle distribution changing unit and the daylighting member in any of the embodiments described above can be used.
  • the light shielding slat 116 constituting the light shielding part 7 is composed of a long plate-like base material 11 having a light shielding property.
  • the base material 11 may be any material that is generally used as a so-called blind slat, and examples thereof include metal, wood, and resin. Moreover, what coated the surface of the base material 11 etc. can be mentioned.
  • the support mechanism 113 includes a plurality of ladder cords 121 arranged in parallel in the vertical direction (short direction of the plurality of slats 112), a fixing box 122 that supports upper ends of the plurality of ladder cords 121, and a plurality of ladder cords 121. And an elevating bar 123 attached to the lower end.
  • the support mechanism 113 includes an elevating operation unit 127 for elevating the plurality of slats 112 and a tilting operation unit 126 for tilting the plurality of slats 112.
  • the lifting / lowering cord 129 is pulled inside the fixed box 122 by pulling the operation cord 128 from the state where the lifting / lowering bar 123 is located at the lowermost part. Accordingly, the plurality of slats 112 rise together with the lifting bar 123 while overlapping on the lifting bar 123 in order from the lower side.
  • the lifting / lowering cord 129 is fixed by a stopper (not shown). Thereby, the raising / lowering bar
  • the tilt operation unit 126 has an operation lever 124 on one side of the fixed box 122.
  • the operation lever 124 is attached to be rotatable about an axis.
  • the vertical cord (not shown) constituting the ladder cord 121 can be moved up and down in opposite directions by rotating the operation lever 124 about the axis.
  • the plurality of slats 112 can be tilted while being synchronized with each other between a state in which the slats 112 are opened and a state in which the slats 112 are closed.
  • the blind 110 having the above-described configuration is arranged in a state where a plurality of slats 112 are opposed to the inner surface of the window glass while being suspended from the upper part of the window glass or the like. Moreover, the lighting part 5 is arrange
  • the daylighting unit 5 emits light L incident on the one surface of each daylighting slat 114 obliquely upward from the other side toward the outside from the other side of each daylighting slat 114. .
  • the light incident from the incident light angle distribution changing film 119 enters the daylighting film 120 through the transparent substrate 118 and is totally reflected by each daylighting portion of the daylighting film 120. It is emitted as light toward the ceiling.
  • the light shielding unit 7 the light L incident on the inside of the light shielding slats 116 obliquely from above is shielded by the light shielding slats 116. Since the light shielding part 7 is located below the daylighting part 5, it is possible to shield light mainly entering the glare region and light going to the floor out of the light L entering the room through the window glass.
  • the angle of the light L toward the ceiling can be adjusted in the daylighting unit 5 by tilting the plurality of slats 112.
  • the light shielding portion 7 the light L incident from between each of the light shielding slats 116 is adjusted by tilting the plurality of slats 112, and the outdoor state is viewed through the window glass from each of the light shielding slats 116. Can be.
  • the blind 110 is opposed to the light-shielding portion 7 (FIG. 38) of the window glass 1003 by moving the plurality of slats 112 up and down, for example, by raising the lifting bar 123 to a predetermined position as shown in FIG. 40A.
  • the area to be opened can be opened.
  • FIG. 40B when the raising / lowering bar 123 is located in the uppermost part, the whole surface of the window glass 1003 can be open
  • the light L incident on the room through the window glass is irradiated toward the indoor ceiling by the plurality of daylighting slats 114 constituting the daylighting unit 5,
  • the light L toward the glare region can be shielded by the plurality of light shielding slats 116 constituting the light shielding unit 7.
  • the outdoor natural light (sunlight) is efficiently taken into the room through the daylighting unit 5, and the person in the room does not feel dazzling and feels bright in the back of the room. It is possible.
  • the light blocking unit 7 it is possible to block the light incident from the window glass by the light blocking unit 7 and prevent the room from being looked into through the window glass.
  • FIG. 41A to 41C are diagrams showing modifications of the daylighting slats.
  • the incident light angle distribution changing film 119 and the daylighting film 120 may be directly bonded.
  • the lighting film 120 is affixed on the one surface side of the transparent base material 118, and the emitted light angle control film 125 is affixed on the other surface side like the lighting slat 117 shown to FIG. 41B.
  • the blinds are installed so that the daylighting film 120 side of each daylighting slat 117 faces the window glass.
  • the frame 130 that supports the daylighting slat 115 may be composed of a frame part 134 and a transparent plate part 138 that covers one opening 134 ⁇ / b> A side of the frame part 134.
  • FIG. 42 is a perspective view showing a schematic configuration of a roll screen (lighting device) 401.
  • FIG. 43 is a cross-sectional view taken along line EE ′ of the roll screen 401 shown in FIG. Moreover, in the following description, about the site
  • the roll screen 401 includes a screen (light-shielding member) 402 and a winding mechanism (supporting mechanism) 403 that supports the screen 402 in a freely winding manner.
  • the screen 402 includes a daylighting unit 5 constituted by a daylighting screen 402A and a light shielding unit 7 located below the daylighting unit 5 and constituted by a light shielding screen 402B having light shielding properties.
  • the daylighting screen 402A includes a transparent substrate 412 having a light-transmitting property (sheet shape), an incident light angle distribution changing film 413 provided on one surface of the transparent substrate 412, and a transparent And a daylighting film 414 provided on the other surface of the base material 412.
  • the thickness of the transparent substrate 412 is a thickness suitable for the roll screen 401.
  • the light shielding screen 402 ⁇ / b> B includes a film-like (sheet-like) light shielding substrate 415 having a light shielding property.
  • the winding mechanism 403 includes a winding core 404 attached along the upper end portion of the screen 402, a lower pipe 405 attached along the lower end portion of the screen 402, and a tension cord attached to the center of the lower end portion of the screen 402. 406 and a storage case 407 for storing the screen 402 wound around the core 404.
  • the winding mechanism 403 is a pull cord type, which fixes the screen 402 at the position where it is pulled out (FIG. 44A), or pulls the tension cord 406 further from the position where it has been pulled, thereby releasing the fixing and winding the screen 402 as a core. It is possible to automatically wind up 404 (FIG. 44B).
  • the winding mechanism 403 is not limited to such a pull cord type, but may be a chain-type winding mechanism that rotates the winding core 404 with a chain, an automatic winding mechanism that rotates the winding core 404 with a motor, or the like. There may be.
  • the roll screen 401 having the above-described configuration is in a state where the storage case 407 is fixed to the upper part of the window glass 1003, and the screen 402 stored in the storage case 407 is pulled out by the pull cord 406 while the window glass 1003 is pulled out. Used in a state of facing the inner surface. At this time, the screen 402 is installed in a state where the incident light angle distribution changing film 413 side is opposed to the window glass 1003.
  • the daylighting unit 5 emits the light L incident on one surface of the screen 402 from the upper side toward the indoor ceiling while changing the traveling direction of the light with the daylighting screen 402A. Specifically, in the daylighting screen 402A, the light incident from the incident light angle distribution changing film 413 enters the daylighting screen 402A through the transparent base material 412 and is totally reflected by each daylighting portion of the daylighting film 414. It is emitted as light toward the ceiling.
  • the light shielding unit 7 shields the light L incident on the inside of the light shielding screen 402B obliquely from above. Since the light-shielding part 7 is located below the daylighting part 5, it is possible to shield mainly the light toward the glare region and the light toward the floor among the light L incident into the room through the window glass 1003.
  • the roll screen 401 can switch the presence / absence of the daylighting function as necessary by winding or unwinding the screen 402 by the winding mechanism 403.
  • the roll screen 401 is not illustrated, but for example, a light diffusion film (light) for diffusing light in the direction toward the glare region. It is also possible to provide a functional film (functional member) such as a diffusing member) or a heat-insulating film (heat insulating member) having light permeability for blocking the radiant heat of natural light (sunlight).
  • a functional film such as a diffusing member
  • a heat-insulating film heat insulating member having light permeability for blocking the radiant heat of natural light (sunlight).
  • Modification of daylighting screen 45A and 45B are diagrams showing modifications of the daylighting screen in the screen.
  • the daylighting film 414 may be bonded to one surface side of the transparent substrate 412 and the emission light angle control film 416 may be bonded to the other surface side.
  • the blind is installed so that the daylighting film 414 side of the roll screen 401 faces the window glass.
  • an incident light angle distribution changing film 413 and a daylighting film 414 that are directly bonded to each other may be sandwiched between a pair of transparent base materials 412.
  • FIG. 46 is a perspective view showing a schematic configuration of the double-glazed glass (lighting device) in the eleventh embodiment.
  • FIG. 47 is a cross-sectional view showing a schematic configuration of the multilayer glass in the eleventh embodiment.
  • the multi-layer glass (lighting device) 500 in this embodiment includes a multi-layer glass structure 515 and a frame (not shown) that supports the multi-layer glass structure 515 as shown in FIGS.
  • the multilayer glass structure 515 includes a first glass substrate 501 and a second glass substrate 502 that are disposed to face each other, an incident light angle distribution changing film 503 provided on one surface of the first glass substrate 501, and a second glass.
  • a daylighting film 504 provided on one surface of the substrate 502 is mainly configured.
  • the incident light angle distribution changing film 503 and the daylighting film 504 are bonded to the inner surfaces 501a and 502a of the glass substrates 501 and 502, respectively, through transparent adhesive layers 505 having light transmissivity provided at the respective peripheral portions. Yes.
  • the configuration of the transparent adhesive layer 505 is not limited to this, and may be provided on the entire surface of the incident light angle distribution changing film 503 and the daylighting film 504.
  • the method for fixing the glass substrates 501 and 502 to the incident light angle distribution changing film 503 and the daylighting film 504 is not limited to using an adhesive layer, and other fixing jigs may be used.
  • the first glass substrate 501 and the second glass substrate 502 are arranged with the incident light angle distribution changing film 503 side and the daylighting film 504 side facing each other. At this time, the first glass substrate 501 and the second glass substrate 502 are arranged apart from each other so that the incident light angle distribution changing film 503 and the daylighting film 504 do not come into contact with each other.
  • the window glass 500 is configured by incorporating the multi-layer glass structure 515 configured as described above into a frame (not shown).
  • the configuration of the multi-layer glass structure is not limited to that described above. It is also possible to appropriately change or add an optical film as a component to an emission light angle distribution changing film, an ultraviolet cut film, an anisotropic light scattering film, or the like.
  • FIG. 48A to FIG. 48C, FIG. 52A, and FIG. 52B are views showing modifications of the multi-layer window glass structure.
  • an emission light angle distribution changing film 506 may be provided instead of the incident light angle distribution changing film 503, instead of the incident light angle distribution changing film 503, a first glass substrate (first substrate) 501 having a daylighting film 504 bonded to one side thereof, and an emission light angle distribution changing film 506 on one side facing the daylighting film 504, like a multilayer glass structure 516 shown in FIG. And a second glass substrate (second substrate) 502 bonded together.
  • Such a multi-layer glass structure 516 has a window in the room so that the first glass substrate 501 having the daylighting film 504 is on the outdoor side and the second glass substrate 502 side having the emission light angle distribution changing film 506 is on the indoor side. Installed.
  • an optical film may be further added between the pair of glass substrates.
  • the light scattering is further performed between the first glass substrate 501 and the second glass substrate 502. It is good also as a structure which provided the film 14.
  • FIG. 48B in addition to the incident light angle distribution changing film 503 and the daylighting film 504, the light scattering is further performed between the first glass substrate 501 and the second glass substrate 502. It is good also as a structure which provided the film 14.
  • the multilayer glass structure 517 has the light scattering film 14 on the one surface 501a of the first glass substrate 501.
  • the second glass substrate 502 is formed by laminating a lighting film 504 and an incident light angle distribution changing film 503 in order from the surface 502a side on one surface (a surface facing the first glass substrate 501) 502a.
  • the incident light angle distribution changing film 503 exists on the light incident side of the daylighting film 504.
  • Such a multilayer glass structure 517 is installed in a posture in which the first glass substrate 501 side having the light scattering film 14 is directed to the outdoor side.
  • a multilayer glass structure 518 shown in FIG. 48C includes three glass substrates 501, 502, and 507.
  • the second glass substrate 502 has the light scattering film 14 on the surface 502 a facing the first glass substrate 501, and the incident light angle distribution changing film 503 on the surface 502 b facing the third glass substrate 507.
  • the third glass substrate 507 has a daylighting film 504 on a surface 507 a facing the incident light angle distribution changing film 503 of the second glass substrate 502.
  • Such a multilayer glass structure 518 is installed such that the first glass substrate 501 side is the outdoor side and the third glass substrate 507 side is the indoor side.
  • the incident light angle distribution is changed in each region R facing each other among the inner surfaces 501a and 502a of the first glass substrate 501 and the second glass substrate 502 facing each other.
  • a film 503 and a daylighting film 504 may be provided.
  • the multi-layer glass structure 520 shown in FIG. 50 is substantially the same as the daylighting apparatus 102 described in the previous second embodiment on the surface 501a of the first glass substrate 501 facing the second glass substrate 502. It has a configuration in which a daylighting device section 521 having a form is arranged.
  • the daylighting device unit 521 includes the incident light angle distribution changing member 10 and the daylighting member 20 including the plurality of daylighting units 21.
  • the multilayer glass structure 523 illustrated in FIG. 51 has a configuration in which a lighting device unit 526 is disposed between the first glass substrate 501 and the second glass substrate 502.
  • the daylighting device unit 526 includes a daylighting device structure 524 that has substantially the same form as the daylighting device 100 described in the first embodiment, and a frame 525 that supports the periphery of the daylighting device structure 524.
  • the daylighting device unit 526 having such a configuration may have the same size as the first glass substrate 501 and the second glass substrate 502, or corresponds to a part of these regions. It may be a size.
  • the daylighting apparatus in the first to eighth embodiments described above has a configuration in which some components are present outside the window glass 1003 as shown in FIG. 52A.
  • a lighting device structure between a plurality of glass substrates 501, 502, a lighting film, an incident light angle distribution change film, an emission light angle distribution change film, etc. Protects against external factors that cause deformation and alteration of Thereby, the lighting effect can be maintained without deterioration of the above-described daylighting film or the like.
  • the difference in appearance due to the presence or absence of the lighting device is reduced.
  • FIG. 53 is a diagram showing a room model including a daylighting device and an illumination dimming system, and is a cross-sectional view taken along the line AA ′ of FIG.
  • FIG. 54 is a plan view showing the ceiling of the room model 2000.
  • the ceiling material constituting the ceiling 2003a of the room 2003 into which external light is introduced may have high light reflectivity.
  • a light-reflective ceiling material 2003A is installed on the ceiling 2003a of the room 2003 as a ceiling material having light reflectivity.
  • the light-reflective ceiling material 2003A is intended to promote the introduction of outside light from the daylighting device 2010 installed in the window 2002 into the interior of the room, and is installed on the ceiling 2003a near the window. Yes. Specifically, it is installed in a predetermined area E (an area about 3 m from the window 2002) of the ceiling 2003a.
  • the light-reflective ceiling material 2003A is external light introduced into the room through the window 2002 in which the daylighting apparatus 2010 of the present invention (the daylighting apparatus of any of the above-described embodiments) is installed. Efficiently leads to the back of the room.
  • the external light introduced from the lighting device 2010 toward the indoor ceiling 2003a is reflected by the light-reflective ceiling material 2003A and changes its direction to illuminate the desk surface 2005a of the desk 2005 placed in the interior of the room. The effect of brightening the desk top surface 2005a is exhibited.
  • the light-reflective ceiling material 2003A may be diffusely reflective or specularly reflective. In order to achieve both effects of suppressing glare light that is unpleasant for humans, it is preferable that the characteristics of the two are appropriately mixed.
  • the light introduced into the room by the daylighting apparatus 2010 of the present invention goes to the ceiling near the window 2002, but the vicinity of the window 2002 often has a sufficient amount of light. Therefore, by using together the light-reflective ceiling material 2003A as described above, the light incident on the ceiling (region E) in the vicinity of the window can be distributed toward the back of the room where the amount of light is small compared to the window.
  • the light-reflective ceiling material 2003A is formed by, for example, embossing a metal plate such as aluminum with unevenness of about several tens of microns, or depositing a metal thin film such as aluminum on the surface of a resin substrate on which similar unevenness is formed. Can be created. Or the unevenness
  • the emboss shape formed on the light-reflective ceiling material 2003A it is possible to control the light distribution characteristics and the light distribution in the room. For example, when embossing is performed in a stripe shape extending toward the back of the room, the light reflected by the light-reflective ceiling material 2003A is in the left-right direction of the window 2002 (direction intersecting the longitudinal direction of the unevenness). spread. When the size and direction of the window 2002 in the room 2003 are limited, the light is reflected in the horizontal direction by the light-reflective ceiling material 2003A and the interior of the room 2003 is moved to the back of the room. It can be reflected toward.
  • the daylighting apparatus 2010 of the present invention is used as a part of the illumination dimming system in the room 2003.
  • the lighting dimming system includes, for example, a lighting device 2010, a plurality of indoor lighting devices 2007, a solar radiation adjusting device 2008 installed in a window, a control system thereof, and a light-reflective ceiling material 2003A installed on a ceiling 2003a. And the constituent members of the entire room including
  • a lighting device 2010 is installed on the upper side, and a solar radiation adjusting device 2008 is installed on the lower side.
  • a blind is installed as the solar radiation adjustment device 2008, but this is not a limitation.
  • a plurality of indoor lighting devices 2007 are arranged in a grid in the left-right direction (Y direction) of the window 2002 and the depth direction (X direction) of the room.
  • the plurality of indoor lighting devices 2007 together with the daylighting device 2010 constitute an entire lighting system of the room 2003.
  • the ceiling length L 1 in the left-right direction (Y-direction) is 18m
  • the length L 2 in the depth direction of the room 2003 (X direction) of the office 9m windows 2002 2003a Indicates.
  • the indoor lighting devices 2007 are arranged in a grid pattern with an interval P of 1.8 m in the horizontal direction (Y direction) and the depth direction (X direction) of the ceiling 2003a. More specifically, 50 indoor lighting devices 2007 are arranged in 10 rows (Y direction) ⁇ 5 columns (X direction).
  • the indoor lighting device 2007 includes an indoor lighting fixture 2007a, a brightness detection unit 2007b, and a control unit 2007c.
  • the indoor lighting fixture 2007a is configured by integrating the brightness detection unit 2007b and the control unit 2007c. It is.
  • the indoor lighting device 2007 may include a plurality of indoor lighting fixtures 2007a and a plurality of brightness detection units 2007b. However, one brightness detector 2007b is provided for each indoor lighting device 2007a.
  • the brightness detection unit 2007b receives the reflected light of the irradiated surface illuminated by the indoor lighting fixture 2007a, and detects the illuminance of the irradiated surface.
  • the brightness detector 200b detects the illuminance of the desk surface 2005a of the desk 2005 placed indoors.
  • the control units 2007c provided for each room lighting device 2007 are connected to each other.
  • Each indoor lighting device 2007 is configured such that the illuminance of the desk top surface 2005a detected by each brightness detecting unit 2007b becomes a constant target illuminance L0 (for example, average illuminance: 750 lx) by the control units 2007c connected to each other.
  • Feedback control is performed to adjust the light output of the LED lamp of each indoor lighting fixture 2007a.
  • FIG. 55 is a graph showing the relationship between the illuminance of light (natural light) taken indoors by the daylighting device and the illuminance (illumination dimming system) by the indoor lighting device.
  • the vertical axis represents the illuminance (lx) on the desk surface
  • the horizontal axis represents the distance (m) from the window.
  • the broken line in the figure indicates the target illuminance in the room.
  • the desk surface illuminance caused by the light collected by the daylighting apparatus 2010 is brighter in the vicinity of the window, and the effect becomes smaller as the distance from the window increases.
  • the daylighting apparatus 2010 of the present invention is used in combination with the indoor lighting apparatus 2007 that compensates for the illuminance distribution in the room.
  • the indoor lighting device 2007 installed on the indoor ceiling detects the average illuminance below each device by the brightness detection unit 2007b, and is dimmed and controlled so that the desk surface illuminance of the entire room becomes a constant target illuminance L0.
  • the S1 and S2 rows installed in the vicinity of the window are hardly lit, and are lit while increasing the output toward the back of the room with the S3, S4, and S5 rows.
  • the desk surface of the room is illuminated by the sum of the illuminance by natural lighting and the illumination by the interior lighting device 2007, and the illuminance of the desk surface is 750 lx (“JIS Z9110 illumination” which is sufficient for work throughout the room. "Recommended maintenance illuminance in the office of" General "" can be realized.
  • the daylighting device 2010 and the lighting dimming system indoor lighting device 2007
  • One aspect of the present invention improves the daylighting performance to the ceiling regardless of the incident angle of incident light, ensures a bright indoor environment by making full use of natural light (sunlight), and more glare light.
  • the present invention can be applied to a lighting device that needs to be suppressed.
  • Angle changing part 16, 73, 83, 100 , 102, 103, 104, 105, 106, 107, 108, 109, 900 ... lighting device, 21b ... reflecting surface, 22 ... frame member (support member), 40 ... light scattering film (light scattering member), 60, 63 , 70, 80... Emission light angle distribution changing member, 93, 130, 5 5 ... Frame, 93 ... Frame (support member), R2 ... Transmission region, S1 ... Space, 110 ... Blind (lighting device), 112 ... Slat (light shielding member), 113 ... Support mechanism, 131, 171 ... Light transmission layer ( Light transmission part), 132, 172 ...
  • Light shielding louver (light shielding part), 137, 177 ... Light transmission part, 401 ... Roll screen (lighting device), 402 ... Screen (light shielding member), 403 ... Winding mechanism (supporting mechanism) 500 ... multi-layer glass (lighting device), 501 ... first glass substrate (first substrate), 502 ... second glass substrate (second substrate), L IN ... incident light, L OUT ... emitted light

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un dispositif d'éclairage naturel, qui comprend un premier substrat perméable à la lumière et de multiples unités d'éclairage naturel perméables à la lumière, qui sont situées sur une première surface du premier substrat. Les unités d'éclairage naturel comprennent : un élément d'éclairage naturel comprenant une surface réfléchissante qui réfléchit la lumière incidente sur l'unité d'éclairage naturel et qui, étant donné deux espaces divisés par un plan imaginaire perpendiculaire à une seconde surface du premier substrat et parallèle à la direction d'extension de l'unité d'éclairage naturel, possède la propriété selon laquelle la lumière réfléchie par la surface réfléchissante et émise par la seconde surface du premier substrat se propage vers l'espace sur le même côté sur lequel la lumière était incidente sur la surface réfléchissante ; et un angle d'élément de changement de distribution de lumière incidente qui modifie l'angle de distribution de lumière incidente de la lumière incidente sur l'élément d'éclairage naturel.
PCT/JP2015/068795 2014-07-01 2015-06-30 Dispositif d'éclairage naturel WO2016002761A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016531385A JP6684709B2 (ja) 2014-07-01 2015-06-30 採光装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014135751 2014-07-01
JP2014-135751 2014-07-01

Publications (1)

Publication Number Publication Date
WO2016002761A1 true WO2016002761A1 (fr) 2016-01-07

Family

ID=55019293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/068795 WO2016002761A1 (fr) 2014-07-01 2015-06-30 Dispositif d'éclairage naturel

Country Status (2)

Country Link
JP (1) JP6684709B2 (fr)
WO (1) WO2016002761A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018186435A1 (fr) * 2017-04-05 2018-10-11 シャープ株式会社 Dispositif d'éclairage naturel
WO2019225498A1 (fr) * 2018-05-24 2019-11-28 シャープ株式会社 Dispositif d'éclairage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146689A (ja) * 1982-02-22 1983-09-01 灘口　明 太陽光利用装置
JPH07239403A (ja) * 1994-02-28 1995-09-12 Fuigura Kk 透過体
JPH0954274A (ja) * 1995-08-18 1997-02-25 Tokyu Constr Co Ltd 採光方法および採光装置
JPH09218374A (ja) * 1996-01-26 1997-08-19 Helmut Dr Federmann まぶしさのない拡散太陽光を部屋に供給する装置
JP2002526906A (ja) * 1998-09-18 2002-08-20 ピーター， ジェームス ミルナー， 昼光照明及びその他用途のための光学部品
WO2012044535A2 (fr) * 2010-10-01 2012-04-05 Hanoch Shalit Procédés et systèmes de contrôle des caractéristiques de transparence d'une fenêtre
WO2013012865A2 (fr) * 2011-07-19 2013-01-24 3M Innovative Properties Company Couches de réorientation de la lumière du jour à séquences multiples
US20130265642A1 (en) * 2012-04-06 2013-10-10 Sergiy Vasylyev Daylighting fabric and method of making the same
WO2014054574A1 (fr) * 2012-10-02 2014-04-10 シャープ株式会社 Film d'éclairage, rouleau pour film d'éclairage, vitre de fenêtre, écran en rouleau et persienne d'éclairage
WO2014200113A1 (fr) * 2013-06-14 2014-12-18 大日本印刷株式会社 Système d'entrée de lumière du jour

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9603639D0 (en) * 1996-02-21 1996-04-17 Milner Peter J A light-diverting optical component

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146689A (ja) * 1982-02-22 1983-09-01 灘口　明 太陽光利用装置
JPH07239403A (ja) * 1994-02-28 1995-09-12 Fuigura Kk 透過体
JPH0954274A (ja) * 1995-08-18 1997-02-25 Tokyu Constr Co Ltd 採光方法および採光装置
JPH09218374A (ja) * 1996-01-26 1997-08-19 Helmut Dr Federmann まぶしさのない拡散太陽光を部屋に供給する装置
JP2002526906A (ja) * 1998-09-18 2002-08-20 ピーター， ジェームス ミルナー， 昼光照明及びその他用途のための光学部品
WO2012044535A2 (fr) * 2010-10-01 2012-04-05 Hanoch Shalit Procédés et systèmes de contrôle des caractéristiques de transparence d'une fenêtre
WO2013012865A2 (fr) * 2011-07-19 2013-01-24 3M Innovative Properties Company Couches de réorientation de la lumière du jour à séquences multiples
US20130265642A1 (en) * 2012-04-06 2013-10-10 Sergiy Vasylyev Daylighting fabric and method of making the same
WO2014054574A1 (fr) * 2012-10-02 2014-04-10 シャープ株式会社 Film d'éclairage, rouleau pour film d'éclairage, vitre de fenêtre, écran en rouleau et persienne d'éclairage
WO2014200113A1 (fr) * 2013-06-14 2014-12-18 大日本印刷株式会社 Système d'entrée de lumière du jour

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018186435A1 (fr) * 2017-04-05 2018-10-11 シャープ株式会社 Dispositif d'éclairage naturel
WO2019225498A1 (fr) * 2018-05-24 2019-11-28 シャープ株式会社 Dispositif d'éclairage
JPWO2019225498A1 (ja) * 2018-05-24 2021-07-15 シャープ株式会社 採光装置

Also Published As

Publication number Publication date
JPWO2016002761A1 (ja) 2017-04-27
JP6684709B2 (ja) 2020-04-22

Similar Documents

Publication Publication Date Title
WO2016067998A1 (fr) Dispositif d'éclairage naturel et système d'éclairage naturel
JP6716733B2 (ja) 採光装置及び採光スラット
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
JP6450995B2 (ja) 採光部材、採光装置、および採光部材の設置方法
JP6703940B2 (ja) 採光装置
WO2016002869A1 (fr) Latte d'éclairage utilisant la lumière du jour et dispositif d'éclairage utilisant la lumière du jour
JP6715183B2 (ja) 採光装置
JP6461820B2 (ja) 採光部材、窓ガラス、ロールスクリーン、採光ルーバー
WO2017061554A1 (fr) Élément d'éclairage naturel, procédé de fabrication d'un élément d'éclairage naturel, et appareil d'éclairage naturel
WO2016175203A1 (fr) Latte d'éclairage naturel et dispositif d'éclairage naturel
US20180313141A1 (en) Daylighting device
WO2017086314A1 (fr) Dispositif et système d'éclairage
WO2017022792A1 (fr) Élément d'éclairage naturel, dispositif d'éclairage naturel et procédé d'installation d'élément d'éclairage naturel
WO2018008656A1 (fr) Dispositif d'éclairage, matrice de moulage et procédé de fabrication de film d'éclairage
JP2016118608A (ja) 採光装置、採光システム
WO2016002761A1 (fr) Dispositif d'éclairage naturel
JP2016091941A (ja) 採光装置
JP6492357B2 (ja) 採光システムおよび天井構造体
JP6757467B2 (ja) 採光装置
WO2017086331A1 (fr) Dispositif d'éclairage, système d'éclairage, et procédé de fabrication de dispositif d'éclairage
WO2018051968A1 (fr) Dispositif d'éclairage
WO2018012401A1 (fr) Lamelle et store
WO2018101393A1 (fr) Système d'éclairage naturel

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: 15814199

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016531385

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15814199

Country of ref document: EP

Kind code of ref document: A1