JP2015185464A - Daylighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a daylighting device which has a simple structure yet efficiently collects light and achieves improvement of brightness at a desired place in a building even if solar altitude changes.SOLUTION: A daylighting device 1 is installed in a house 50 having a glass window 51 and includes: an optical sheet 6 which is disposed facing the glass window 51, is formed so that light penetrates therethrough, and changes a travel direction of at least a part of the penetrating light when the light penetrates therethrough; and a swing mechanism 5 which displaces the optical sheet 6 so as to change a space between the optical sheet 6 and the glass window 51.

Description

  The present invention relates to a daylighting apparatus, and more particularly to a daylighting apparatus used for daylighting a building such as a house.

  2. Description of the Related Art Conventionally, so-called daylighting (also referred to as sunlight illumination or daylight illumination) is known in which sunlight is introduced into a room in order to adjust the environment such as the brightness of a room in a building. However, in recent years, from the viewpoint of reducing the environmental load, it is desired to more efficiently introduce sunlight into a room and reduce the use of artificial lighting during the daytime.

  Therefore, an optical member that can change the traveling direction of light by optical action such as light refraction, diffraction, or reflection is attached to a window, etc., and sunlight is efficiently introduced into the room to improve indoor brightness. Various attempts have been made to achieve this.

  As such an optical member, for example, a daylighting sheet having a reflective surface formed by filling a concave groove repeatedly produced at a predetermined pitch in the vertical direction with a filler (see, for example, Patent Document 1), There has been proposed a solar illuminator in which a plurality of rod-shaped element members having reflecting surfaces are arranged so as to be arranged in the vertical direction (see, for example, Patent Document 2).

  And such a daylighting sheet and a solar illuminator are installed, for example, in a window of a house, and the sunlight incident from the outside through the window is reflected by the reflection surface.

JP 2012-255951 A JP 2009-266794 A

  However, in each of the daylighting sheet of Patent Document 1 and the solar illuminator of Patent Document 2, in order to improve the brightness of a desired place indoors and to ensure suitable daylighting, the inclination of the reflecting surface ( The extending direction) is adjusted.

  For example, in the daylighting sheet of Patent Document 1, the inclination of the reflecting surface is adjusted by changing the shape of the concave groove, and in the sunlight illuminator of Patent Document 2, the shape of the element member is changed to change the reflecting surface. The tilt is adjusted.

  However, the altitude of the sun changes with the passage of time during the day, and if the date (season) is different, it is different even at the same time. That is, the incident angle of sunlight changes depending on the time of day and the date (season).

  Therefore, each of the daylighting sheet described in Patent Document 1 and the solar illuminator disclosed in Patent Document 2 efficiently collects sunlight when the altitude of the sun is within a specific range, and a desired place indoors. However, if the altitude of the sun falls outside a specific range, it may not be possible to efficiently illuminate, and it may not be possible to sufficiently secure the brightness of a desired place indoors.

  On the other hand, in the solar light illuminator of Patent Document 2, a configuration in which a plurality of element members are configured to be rotatable and the element members are interlocked to change the inclination of the reflecting surface in accordance with changes in solar altitude. Proposed. However, such a configuration, that is, a configuration in which each element member is rotatable and a plurality of element members are interlocked, is complicated and has a disadvantage of high manufacturing cost.

  Therefore, an object of the present invention is to provide a daylighting apparatus that can efficiently illuminate even if the altitude of the sun changes and can improve the brightness of a desired place in a building, although it has a simple configuration. There is to do.

  In order to achieve the above-described object, the lighting device of the present invention is a lighting device configured to be installed in a building having a window, and the lighting device is installed when the lighting device is installed in the building. An optical sheet that is disposed to face the window and is configured to transmit light, and that changes the traveling direction of at least part of the transmitted light when the light is transmitted, and the lighting device is installed in the building. And a displacement mechanism for displacing the optical sheet so as to change an interval between the optical sheet and the window.

  According to such a configuration, the displacement mechanism can displace the optical sheet so as to change the interval between the optical sheet and the window in a state where the lighting device is installed in the building.

  Therefore, even if the altitude of the sun changes due to changes in time and date (season) during the day, the optical sheet is appropriately displaced to a suitable position with respect to the window according to the solar altitude at that time. be able to.

  As a result, even with a simple configuration, even if the altitude of the sun changes, daylight can be efficiently collected, and the brightness of a desired place in the building can be improved.

  Further, the daylighting device includes a support portion that supports the optical sheet, and the displacement mechanism changes a distance between the support portion and a peripheral portion of the window in the window or the building, It is preferable that the optical sheet is displaced to change a distance between the optical sheet and the window.

  According to such a structure, a displacement mechanism changes the space | interval between an optical sheet and a window by changing the space | interval of the support part which supports an optical sheet, and a window (or the peripheral part of the window in a building). To change. Therefore, the optical sheet can be stably displaced to a suitable position with respect to the window so as to correspond to the altitude of the sun.

  In addition, the optical sheet is disposed so as to extend in a vertical direction in a state where the lighting device is installed in the building, and the displacement mechanism swings the optical sheet with an upper end portion of the optical sheet as a fulcrum. It is preferable to move it.

  According to such a configuration, the displacement mechanism swings the optical sheet with the upper end portion of the optical sheet as a fulcrum when the optical sheet is displaced. Therefore, the inclination of the optical sheet with respect to the incident angle of sunlight can be changed.

  As a result, even if the altitude of the sun changes, the traveling direction of the light can be changed reliably by swinging the optical sheet according to the change of the altitude of the sun, and the light can be efficiently and stably collected. Can do.

  The support portion includes a first support portion that supports the upper end portion of the optical sheet and a second support portion that supports the lower end portion of the optical sheet, and the displacement mechanism includes the second support portion and the second support portion. By changing the interval between the window or the peripheral edge of the window in the building, the optical sheet is swung with the first support portion as a fulcrum, and between the optical sheet and the window. It is preferable that the interval is changed.

  According to such a structure, a displacement mechanism changes the space | interval between a 2nd support part and a window (or the peripheral part of the window in a building), when displacing an optical sheet. Accordingly, the optical sheet swings with the first support portion as a fulcrum, and the interval between the optical sheet and the window is changed. That is, the optical sheet can be reliably swung with the first support portion as a fulcrum.

  The optical sheet is preferably arranged so as to extend in a vertical direction in a state where the lighting device is installed in the building, and the displacement mechanism preferably slides the optical sheet.

  According to such a configuration, the displacement mechanism slides the optical sheet when displacing the optical sheet. Therefore, the relative positional relationship between the optical sheet and the window can be reliably changed in the sliding direction of the optical sheet.

  As a result, even if the altitude of the sun changes, the optical sheet can be placed in a suitable position with respect to the window by sliding the optical sheet according to the change in the altitude of the sun, and the desired place in the building It is possible to reliably improve the brightness.

  The support portion includes a first support portion that supports an upper end portion of the optical sheet, and the displacement mechanism is a distance between the first support portion and a peripheral portion of the window in the window or the building. It is preferable that the optical sheet is slid to change the distance between the optical sheet and the window.

  According to such a structure, when a displacement mechanism displaces an optical sheet, it changes the space | interval between a 1st support part and a window (or the peripheral part of the window in a building). As a result, the upper end portion of the optical sheet slides and the distance between the optical sheet and the window is changed. That is, the optical sheet can be reliably slid.

  According to the daylighting device of the present invention, even if the altitude of the sun changes, the daylighting can be efficiently performed and the brightness of a desired place in the building can be improved even though the configuration is simple.

FIG. 1 shows a perspective view of a first embodiment of a daylighting apparatus of the present invention. FIG. 2 is a perspective view of a unit film according to the optical sheet shown in FIG. FIG. 3 is an explanatory diagram for explaining a process in which the side layer of the laminate is cut after the support is attached to the side of the laminate formed by laminating the unit films shown in FIG. . FIG. 4 is an explanatory diagram for explaining a process in which the side layer of the laminate is continuously cut after the support drawn from the support roll is attached to the side of the laminate shown in FIG. It is. FIG. 5 is a perspective view of the daylighting layer and the support shown in FIG. FIG. 6A is a schematic explanatory diagram for explaining a state in which the daylighting device shown in FIG. 1 is installed in a house, and shows a reference state in which the optical sheet is along the vertical direction. 6B is a plan view of the swinging mechanism of the daylighting device shown in FIG. 6A. FIG. 7A is a schematic explanatory diagram for explaining a state in which the daylighting apparatus shown in FIG. 1 is installed in a house, and shows a first inclined state in which the optical sheet is inclined so as to approach the glass window. FIG. 7B is a plan view of the swinging mechanism of the daylighting device shown in FIG. 7A. FIG. 8A is a schematic explanatory diagram for explaining a state in which the lighting device shown in FIG. 1 is installed in a house, and shows a second inclined state in which the optical sheet is inclined so as to be separated from the glass window. FIG. 8B is a plan view of the swinging mechanism of the daylighting device shown in FIG. 8A. FIG. 9A is a schematic explanatory diagram for explaining a state in which the second embodiment of the daylighting apparatus of the present invention is installed in a house, and shows a state in which the slide mechanism is in the vicinity state. FIG. 9B is a plan sectional view of the slide mechanism of the daylighting apparatus shown in FIG. 9A. FIG. 9C is a front view of the other rail unit in the width direction of the pair of rail units shown in FIG. 9B. FIG. 10A is a schematic explanatory diagram for explaining a state where the daylighting apparatus shown in FIG. 9A is installed in a house, and shows a state where the slide mechanism is in a distant state. 10B is a cross-sectional plan view of the slide mechanism of the daylighting device shown in FIG. 10A. FIG. 11A is a perspective view of a unit film according to the third and fourth embodiments of the daylighting apparatus of the present invention. FIG. 11B is a perspective view of a daylighting layer and a support cut out from a laminate formed by laminating the unit films shown in FIG. 11A.

1. As shown in FIG. 1, the daylighting apparatus 1 is configured as a roll screen, and includes a frame 2, a pair of support shafts 3 as an example of a support portion, an optical sheet 6, and an example of a displacement mechanism. The swing mechanism 5 is provided.

  In the following description, when referring to the direction of the daylighting device 1, the direction in which the frame 2 is arranged is the upper side of the daylighting device 1 and the opposite is the lower side of the daylighting device 1.

  The frame 2 includes a pair of side walls 14 that are spaced apart from each other in the width direction perpendicular to the vertical direction, and a connecting wall 15 that is laid between the upper ends of the pair of side walls 14.

  Each of the pair of side walls 14 is formed in a substantially rectangular plate shape extending in the vertical direction when viewed from the width direction. The connecting wall 15 is formed in a substantially rectangular plate shape in plan view extending in the width direction.

  The pair of support shafts 3 are arranged at intervals in the vertical direction, and a first support shaft 16 as an example of a first support portion and a second support shaft 17 as an example of a second support portion. It has.

  The first support shaft 16 is the upper support shaft 3 of the pair of support shafts 3 and functions as a winding shaft for the optical sheet 6. The first support shaft 16 is formed in a substantially cylindrical shape extending in the width direction. The first support shaft 16 is disposed between the pair of side walls 14, and both ends thereof are rotatably supported by the pair of side walls 14.

  The second support shaft 17 is the lower support shaft 3 of the pair of support shafts 3 and functions as a weight shaft of the optical sheet 6. The second support shaft 17 is formed in a substantially cylindrical shape extending in the width direction. The outer diameter of the second support shaft 17 is smaller than the outer diameter of the first support shaft 16.

  The optical sheet 6 is formed in a flexible sheet shape (film shape), and is formed in a rectangular shape when viewed from the front-rear direction orthogonal to both the vertical direction and the width direction.

  The upper end portion of the optical sheet 6 is supported by the first support shaft 16 along the width direction, and the lower end portion of the optical sheet 6 is supported by the second support shaft 17 along the width direction. Therefore, the optical sheet 6 is moved into a storage state (not shown) wound around the first support shaft 16 and a extended state in which the optical sheet 6 is drawn downward from the storage state when the first support shaft 16 rotates. Is configured to move. In the present embodiment, only the extended state of the optical sheet 6 is shown in FIGS. 1 and 6A to 8B. The extended optical sheet 6 hangs down from the first support shaft 16 to the second support shaft 17.

  The dimension in the width direction of the optical sheet 6 is, for example, 15 cm or more and 200 cm or less, and the dimension in the vertical direction of the optical sheet 6 is, for example, 50 cm or more and 300 cm or less. The thickness (dimension in the front-rear direction) of the optical sheet 6 is, for example, 50 μm or more and 300 μm or less. That is, the front-rear direction is an example of the thickness direction of the optical sheet, and the front is one example of the thickness direction of the optical sheet and the rear is the other example of the thickness direction of the optical sheet.

  The optical sheet 6 is configured to transmit light, and includes a daylighting layer 7 and a pair of supports 8 as shown in FIG. 6A.

  The daylighting layer 7 is a substantially central portion of the optical sheet 6 in the front-rear direction, and includes a plurality of transparent layers 9 and a plurality of air layers 10. In the first embodiment, the daylighting layer 7 is composed of only the transparent layer 9 and the air layer 10. The transparent layer 9 and the air layer 10 are in a reference state (described later) along which the optical sheet 6 extends in the vertical direction. They are sequentially repeated so as to be continuous in the direction. In the following description of the optical sheet 6, the description will be based on the reference state of the optical sheet 6.

  The plurality of transparent layers 9 are arranged in parallel in the vertical direction with a slight gap (air layer 10) therebetween. As shown in FIG. 5, each of the plurality of transparent layers 9 is formed in a substantially bowl shape and extends over the entire width direction of the daylighting layer 7. Moreover, the upper surface and lower surface of the transparent layer 9 are along the front-back direction, as shown to FIG. 6A.

  The transparent layer 9 is configured to transmit light, and is preferably formed from a transparent resin material from the viewpoint of ease of processing.

  Examples of the transparent resin material include known resin materials. Examples of the resin material include polyester (for example, polyethylene terephthalate (PET)), polyolefin (for example, polyethylene (PE), polypropylene (PP)). , Polycarbonate (PC), polyvinyl chloride, acrylic resin, polystyrene (PS), epoxy resin, silicone resin, fluorine resin, urethane resin, cellulose, polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), etc. Can be mentioned.

  Among such transparent resin materials, polyolefin and polyvinyl chloride are preferable, and polypropylene is more preferable. Such resin materials may be used alone or in combination of two or more.

  The dimension of the transparent layer 9 in the vertical direction is, for example, 20 μm or more, preferably 30 μm or more, for example, 500 μm or less, preferably 200 μm or less, and the dimension of the transparent layer 9 in the front-rear direction is, for example, 20 μm. The thickness is preferably 50 μm or more, for example, 500 μm or less, and preferably 400 μm or less. The vertical dimension of the transparent layer 9 is, for example, 40% or more, preferably 50% or more, for example, 250% or less, from the viewpoint of daylighting, with respect to 100% of the dimension of the transparent layer 9 in the front-rear direction. From the viewpoint of daylighting, it is preferably 200% or less.

  The light transmittance of the transparent layer 9 is, for example, 80% or more, preferably 90% or more, and more preferably 92% with respect to light having a wavelength of 440 to 600 nm when the thickness of the transparent layer 9 is 100 μm. % Or more, for example, 98% or less.

  Further, the relative refractive index of the transparent layer 9 is, for example, 1.3 or more, preferably 1.4 or more, for example, 1.8 or less, preferably 1.65 or less with respect to the refractive index of air. . The refractive index can be measured with a prism coupler.

  Each of the plurality of air layers 10 is formed as a gap between the transparent layers 9 adjacent to each other in the plurality of transparent layers 9. Specifically, the air layer 10 is partitioned by the upper surface of the lower transparent layer 9 and the lower surface of the upper transparent layer 9 among the adjacent transparent layers 9. Therefore, each of the plurality of air layers 10 extends over the entire width direction of the daylighting layer 7, and the boundary 38 between the transparent layer 9 and the air layer 10 is along the width direction and the front-rear direction.

  The transparent layer 9 and the air layer 10 extend in the horizontal direction (width direction and front-rear direction), but the transparent layer 9 and the air layer 10 may be inclined about ± 10 ° with respect to the horizontal direction. .

  The vertical dimension of such an air layer 10 is smaller than the vertical dimension of the transparent layer 9, for example, 0.1 μm or more, preferably 1 μm or more, for example, 50 μm or less, preferably 10 μm or less. . The vertical dimension of the air layer 10 is, for example, 1/5000 or more, preferably 1/200 or more, for example 1/2 or less, preferably 1 with respect to the vertical dimension of the transparent layer 9. / 10 or less. The dimension of the air layer 10 in the front-rear direction is the same as the dimension of the transparent layer 9 in the front-rear direction.

  The pair of supports 8 are both front and rear ends of the optical sheet 6 and sandwich the daylighting layer 7 from both front and rear sides. The support 8 may be provided only on one side (one side) of the daylighting layer 7.

  Each of the pair of supports 8 includes a substrate 12 and an adhesive layer 11.

  The base material 12 is an outer portion of the support 8 and is configured to transmit light. Examples of the substrate 12 include a substrate such as a PET film, a cloth such as polyester, a fluorine-based polymer (for example, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene-hexa Low adhesive substrate made of fluoropropylene copolymer, chlorofluoroethylene-vinylidene fluoride copolymer, etc., low adhesive substrate made of nonpolar polymer (for example, olefin resin such as polyethylene, polypropylene, etc.), etc. Is mentioned.

  Among such base materials 12, a PET film, a cloth such as polyester, and a low-adhesive base material made of a nonpolar polymer are preferable, and a PET film is more preferable.

  The dimension of the base material 12 in the front-rear direction is, for example, 10 μm or more, preferably 30 μm or more, for example, 100 μm or less, preferably 50 μm or less. Further, the light transmittance of the base material 12 is, for example, 85% or more, preferably 90% or more, more preferably with respect to light having a wavelength of 440 to 600 nm when the dimension of the base material 12 in the front-rear direction is 50 μm. Is 92% or more, for example, 98% or less.

  The pressure-sensitive adhesive layer 11 is an inner portion of the support 8 and is interposed between the base material 12 and the daylighting layer 7. Thereby, the daylighting layer 7 and the base material 12 are adhered.

  Examples of the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer 11 include known pressure-sensitive adhesives such as epoxy pressure-sensitive adhesives, silicone pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, and ultraviolet curable pressure-sensitive adhesives. The pressure-sensitive adhesive preferably transmits light. Moreover, the adhesive layer 11 can also be comprised from a well-known double-sided adhesive tape.

  Among such pressure-sensitive adhesives, an acrylic pressure-sensitive adhesive is preferable. Such pressure-sensitive adhesives may be used alone or in combination of two or more.

  The dimension in the front-rear direction of the pressure-sensitive adhesive layer 11 is, for example, 1 μm or more, preferably 5 μm or more, for example, 100 μm or less, preferably 40 μm or less. In addition, when the substrate 12 itself is sticky, the pressure-sensitive adhesive layer 11 is not necessary in the support 8.

  In order to manufacture such an optical sheet 6, as shown in FIG. 2, first, a plurality of unit films 37 made of the transparent layer 9 are prepared. In order to prepare such a unit film 37, for example, a processed sheet made of the transparent layer 9 is prepared, and then a unit film 37 having a predetermined shape is cut out from the processed sheet. Examples of the method for cutting out the unit film 37 from the processed sheet include known processing methods such as cutting and punching.

  The shape of the unit film 37 is not particularly limited, and the unit film 37 is formed to have, for example, a polygonal shape or a circular shape, preferably a circular shape, when viewed from the thickness direction of the unit film 37 by the above-described cutting method. Is done.

  Further, the size of the unit film 37 is appropriately changed according to the purpose of use, etc., but when the unit film 37 is circular when viewed from the thickness direction, the diameter is, for example, 10 cm to 1 m (100 cm), From the viewpoint of workability, it is preferably 10 cm to 50 cm.

  A plurality of such unit films 37, for example, 300 sheets or more, preferably 10,000 sheets or more, for example, 60000 sheets or less, preferably 30000 sheets or less are prepared.

  In order to prepare a plurality of unit films 37, for example, a processed sheet may be formed large so that a plurality of unit films 37 can be cut out, and a plurality of unit films 37 may be cut out from the processed sheets. May be prepared, and the unit film 37 may be cut out one by one from each processed sheet. Each of the plurality of unit films 37 is preferably formed in the same shape and size.

  Next, as shown in FIG. 3, a plurality of unit films 37 are laminated in the thickness direction of the unit film 37 without sandwiching the pressure-sensitive adhesive layer to prepare a laminate 31.

  More specifically, the plurality of unit films 37 are laminated so that the plurality of unit films 37 sequentially overlap in the thickness direction. That is, the thickness direction of the unit film 37 and the lamination direction of the laminated body 31 are the same direction.

  Here, in the laminate 31, a slight amount of air is interposed between the unit films 37 adjacent to each other in the stacking direction, which serves as the air layer 10, and separates the unit films 37 adjacent to each other. Yes.

  In FIG. 3, for convenience, the number of unit films 37 is omitted, and the laminated body 31 is described as being composed of 18 unit films 37. For example, 300 to 60,000, preferably 10,000 to 30,000 unit films 37 are laminated and formed.

  Moreover, when each unit film 37 is formed in the same shape and size, the plurality of unit films 37 are laminated so that their outer peripheral edges coincide with each other when projected in the lamination direction.

  As described above, the columnar (block-shaped) stacked body 31 extending in the stacking direction is formed. For example, when the unit film 37 is circular as viewed from the thickness direction, the columnar laminate 31 is formed. The height (the length in the stacking direction) of the stacked body 31 is, for example, not less than 1 cm and not more than 200 cm.

  Next, after the support body 8 is attached to the side surface 32 (surface extending along the stacking direction) of the stacked body 31 along the stacking direction, the side layer 33 of the stacked body 31 to which the support body 8 is bonded is attached. The plurality of unit films 37 are cut so as to be aligned in the stacking direction of the stacked body 31.

  The cutting method for cutting the side layer 33 of the stacked body 31 is not particularly limited as long as the side layer 33 supported by the support 8 can be cut out from the stacked body 31.

  Among such cutting methods, from the viewpoint of productivity, the laminated body 31 is formed in a cylindrical shape, and the side layer 33 of the laminated body 31 is continuously cut out by the cutting device 40 as shown in FIG. Is preferred.

  The cutting device 40 includes a rotating shaft 41, a pair of holding members 42, and a cutting blade 35.

  The rotating shaft 41 has a substantially cylindrical shape, and is configured to be rotatable around the axis. A long and flat belt-like support 8 is wound around the rotating shaft 41. Specifically, the long and flat belt-like support 8 is wound around the rotary shaft 41 in a spiral manner so that the adhesive layer 11 is positioned on the inner side in the radial direction of the rotary shaft 41 with respect to the substrate 12. Thus, the support 8 is configured as a support roll 45 centered on the rotation shaft 41. In addition, the peeling process layer (not shown) is provided in the surface on the opposite side to the adhesive layer 11 in the base material 12. As shown in FIG. The peeling force of the base material 12 by a peeling process layer is adjusted suitably.

  In the support roll 45, the support body 8 is arrange | positioned in the radial direction of the rotating shaft 41, and the adhesive layer 11 and the base material 12 are sequentially repeated. Further, as described above, since the release treatment layer is provided on the surface of the base material 12 opposite to the pressure-sensitive adhesive layer 11, in the radial direction of the rotation shaft 41, between the supports 8 adjacent to each other, A release treatment layer is interposed between the pressure-sensitive adhesive layer 11 of the support 8 disposed on the radially outer side and the base material 12 of the support 8 disposed on the radially inner side.

  The pair of holding members 42 are arranged with respect to the support roll 45 at an interval in the radial direction of the support roll 45. Each of the pair of holding members 42 has a substantially disc shape, and is configured to be rotatable about its axis.

  Further, the pair of holding members 42 are arranged with a space therebetween in the axial direction of the holding member 42. Then, the pair of holding members 42 press the substantially cylindrical laminated body 31 from both sides in the laminating direction to hold the laminated body 31. As a pressurizing condition, the pressure from one side (the other side) in the stacking direction with respect to the stacked body 31 is, for example, 0.01 MPa or more and 10 MPa or less. In addition, each holding member 42 is arrange | positioned so that the laminated body 31 and an axis line may correspond in the state which hold | maintained the laminated body 31. FIG.

  The cutting blade 35 is disposed along the stacking direction with respect to the side surface 32 of the stacked body 31 held by the pair of holding members 42, and the tip of the cutting blade 35 is placed on the side surface 32 of the stacked body 31. It is in contact from a substantially tangential direction.

  In addition, the cutting blade 35 maintains the state in which the tip of the cutting blade 35 is in contact with the side surface 32 of the laminated body 31 as the diameter of the laminated body 31 decreases as the cutting process proceeds. It is configured to approach.

  In order to continuously cut the side layer 33 of the laminated body 31 with such a cutting device 40, first, the laminated body 31 in which the support body 8 drawn out from the support body roll 45 is held by the pair of holding members 42. Affixed to the side 32 of

  More specifically, the support 8 is drawn toward the tangential direction of the laminate 31 so that the pressure-sensitive adhesive layer 11 of the drawn support 8 adheres to the side surface 32 of the laminate 31, and the central angle of the laminate 31 is For example, it is affixed on the side surface 32 of the laminated body 31 in the range of 90 ° to 270 °, preferably in the range of 120 ° to 240 °.

  Next, the pair of holding members 42 are rotated in the counterclockwise direction when viewed from one axial direction (the front side in FIG. 5) of the holding member 42 by a driving force from a driving source such as a motor included in the cutting device 40. To drive.

  Then, the laminated body 31 held by the pair of holding members 42 rotates about the axis, and the support roll 45 is driven about the axis of the rotation shaft 41.

  Thereby, the side layer 33 of the laminated body 31 to which the support body 8 is bonded is continuously cut out by the cutting blade 35 like wig peeling. In addition, the thickness of the side layer 33 to be cut out can be appropriately adjusted by the arrangement and angle of the cutting blade 35 with respect to the laminated body 31 when the laminated body 31 is cut.

  As described above, as shown in FIG. 5, the side surface layer 33 in which the support 8 is bonded to one surface continuously from the laminate 31, that is, the lighting layer 7 in which the support 8 is bonded to one surface is formed. The laminate 31 is cut into a long and flat strip shape.

  Subsequently, the support body 8 is affixed also to the other surface of the lighting layer 7. FIG. Specifically, the support 8 is prepared separately, and the pressure-sensitive adhesive layer 11 of the support 8 is bonded to the other surface of the daylighting layer 7.

  As a result, as shown in FIG. 6A, the pair of supports 8 are attached to the daylighting layer 7 so as to sandwich the daylighting layer 7, and the optical sheet 6 is prepared. When the support 8 is provided only on one side of the daylighting layer 7, the support 8 is not attached to the other side of the daylighting layer 7.

  Thereafter, the optical sheet 6 is cut into a predetermined shape and size. Examples of the method for cutting the optical sheet 6 include known processing methods such as cutting and punching.

  As shown in FIGS. 1 and 7B, the swing mechanism 5 is disposed adjacent to the rear side of the second support shaft 17 and is connected to the approximate center in the width direction of the second support shaft 17. As shown in FIG. 7B, the swing mechanism 5 includes a connecting portion 18, a telescopic portion 20, and an attaching / detaching portion 19. Although the rocking mechanism 5 will be described in detail later, as shown in FIG. 8B, the detachable portion 19 is relatively first in the first state where the detachable portion 19 is relatively disposed near the second support shaft 17. 2 It is comprised so that it may displace continuously between the 2nd states arrange | positioned far from the support shaft 17. FIG. Therefore, the following description of the swing mechanism 5 will be described with reference to the first state shown in FIGS. 1 and 7B.

  The swing mechanism 5 has a substantially crank shape in plan view in the first state.

  The connecting portion 18 is a base end portion of the swing mechanism 5 and is connected to the approximate center in the width direction of the second support shaft 17. The connecting portion 18 integrally includes a shaft portion 22 and a ball portion 21.

  The shaft portion 22 is a front portion of the connecting portion 18 and has a substantially cylindrical shape extending in the front-rear direction. The front end portion of the shaft portion 22 is connected to the approximate center in the width direction of the second support shaft 17.

  The ball portion 21 is a rear portion of the connecting portion 18 and is formed in a substantially spherical shape. The outer diameter of the ball portion 21 is larger than the outer diameter of the shaft portion 22. The ball portion 21 is connected to the rear end portion (free end portion) of the shaft portion 22 so that the center thereof coincides with the central axis of the shaft portion 22.

  The telescopic part 20 is an intermediate part in the swing mechanism 5 and is disposed on the other side in the width direction with respect to the ball part 21 of the connecting part 18. The telescopic part 20 includes an advance / retreat guide part 23 and an advance / retreat part 24.

  The advance / retreat guide part 23 has a ball receiving part 25 and a cylinder part 26 integrally.

  The ball receiving portion 25 is one portion in the width direction of the advance / retreat guide portion 23 and is formed in a bowl shape that opens toward one side in the width direction. The inner diameter of the ball receiving portion 25 is substantially the same as the outer diameter of the ball portion 21.

  The cylinder part 26 is the other part in the width direction of the advance / retreat guide part 23 and has a substantially cylindrical shape extending in the width direction. Further, the cylinder portion 26 extends from the other end portion in the width direction of the ball receiving portion 25 toward the other in the width direction so that the central axis thereof coincides with the center of the ball receiving portion 25.

  Then, the advancing / retreating guide portion 23 swings around the center of the ball portion 21 as a fulcrum by swinging (swinging) when the ball receiving portion 25 receives the ball portion 21 so as not to be detached and movable along the circumferential surface of the ball portion 21. It is configured to be possible. That is, the ball part 21 and the ball receiving part 25 function as a ball joint.

  The advancing / retreating portion 24 integrally includes a piston portion 27 and a ball portion 28.

  The piston portion 27 is one portion in the width direction of the advance / retreat portion 24 and is formed in a substantially cylindrical shape extending in the width direction. The outer diameter of the piston part 27 is substantially the same as the inner diameter of the cylinder part 26.

  The ball portion 28 is the other portion in the width direction of the advance / retreat portion 24 and is formed in a substantially spherical shape. The outer diameter of the ball portion 28 is larger than the outer diameter of the piston portion 27 and is substantially the same as the ball portion 21 of the connecting portion 18. Further, the ball portion 28 is connected to the other end portion in the width direction of the piston portion 27 so that the center thereof coincides with the central axis of the piston portion 27.

  The advancing / retreating portion 24 is supported by the advancing / retreating guide portion 23 by inserting the piston portion 27 into the cylinder portion 26 so as to be able to advance and retreat. The advancing / retreating part 24 is restricted from being separated from the advancing / retreating guide part 23 by a restriction part (not shown).

  The detachable portion 19 is a free end portion in the swing mechanism 5 and is disposed rearward with respect to the ball portion 28 of the advance / retreat portion 24. The detachable part 19 includes a ball receiving part 29 and a fixing part 30.

  The ball receiving portion 29 is a front portion of the attaching / detaching portion 19 and is formed in a bowl shape that is opened forward. The inner diameter of the ball receiving portion 29 is substantially the same as the outer diameter of the ball portion 28.

  The fixing portion 30 is a rear portion of the attaching / detaching portion 19 and is configured as a suction cup made of a flexible material (for example, rubber) in the first embodiment. The fixing portion 30 is arranged so that the suction surface faces rearward, and the suction surface is configured to be able to be adsorbed and desorbed to a glass window 51 described later. Further, the fixed portion 30 is connected to the rear end portion of the ball receiving portion 29 so that the center thereof coincides with the center of the ball receiving portion 29 in the front-rear direction.

The detachable portion 19 can swing (swing) with the center of the ball portion 28 as a fulcrum by receiving the ball receiving portion 29 so that the ball portion 28 cannot be detached and movable along the peripheral surface of the ball portion 28. It is configured. That is, the ball part 28 and the ball receiving part 29 function as a ball joint.
2. Next, a usage mode of the lighting device 1 will be described.

  As shown in FIG. 6A, the daylighting apparatus 1 is installed and used in a building such as a house 50 having a glass window 51 as an example of a window. Specifically, in the daylighting apparatus 1, the frame 2 is attached to the ceiling portion 53 of the house 50 with screws or the like, and is installed in the house 50. Thereby, each of the optical sheet 6 and the second support shaft 17 in the extended state is opposed to the front of the glass window 51 with a space therebetween. Further, the fixed portion 30 of the swing mechanism 5 is attracted to the glass window 51.

  As a result, as shown in FIGS. 6A to 8B, if the second support shaft 17 is moved in the front-rear direction, the swing mechanism 5 causes the optical sheet 6 to tilt so as to approach the glass window 51. The state (see FIG. 7A) and the second inclined state (see FIG. 8A) that is inclined away from the glass window 51 are continuously swung (displaced). Further, the swing mechanism 5 can maintain the posture of the optical sheet 6 when the optical sheet 6 is between the first inclined state and the second inclined state.

  For example, as shown in FIG. 6A, if the distance between the second support shaft 17 and the glass window 51 is adjusted so that the optical sheet 6 is along the vertical direction, the swing mechanism 5 causes the optical sheet 6 to A reference state that is an intermediate state between the first inclined state and the second inclined state is maintained. Note that the optical sheet 6 is in the reference state even when the fixing portion 30 is not attracted to the glass window 51.

  When the optical sheet 6 is in the reference state, when the sunlight L enters from the outside of the house 50 (outdoors) through the glass window 51, a part of the light L1 in the sunlight L enters the transparent layer 9. After that, the boundary 38 between the transparent layer 9 and the air layer 10 is reached. A part of the light L 1 is reflected by the boundary 38 (air layer 10) and travels from the transparent layer 9 toward the ceiling portion 53 of the house 50. After that, a part of the light L1 is reflected by the ceiling portion 53 to improve the brightness in the house 50.

  Further, as indicated by a virtual line in FIG. 7A, when the height of the sun rises when the optical sheet 6 is in the reference state, sunlight having a relatively large incident angle with respect to the glass window 51 (hereinafter, the sun height is relative). The sunlight when it is high is referred to as sunlight LH) enters from outside the house 50 (outdoors). Then, a part of the light L2 in the sunlight LH enters the transparent layer 9 and then reaches the boundary 38 between the transparent layer 9 and the lower air layer 10. A part of the light L2 is reflected by the boundary 38 (lower air layer 10) and travels upward in the transparent layer 9, and then the boundary between the transparent layer 9 and the upper air layer 10. 38, is reflected by the boundary 38 (upper air layer 10), and proceeds downward. Thereafter, part of the light L <b> 2 travels from the transparent layer 9 toward the floor 52 of the house 50.

  In order to make some light L2 of such sunlight LH travel toward the ceiling portion 53, as shown in FIGS. 6B and 7B, the swing mechanism 5 is set to the first state, and the optical sheet 6 is used. Is displaced to the first inclined state.

  In order to move the swing mechanism 5 to the first state, the second support shaft 17 is moved backward in a state where the fixing portion 30 is attracted to the inner surface of the glass window 51.

  Then, the telescopic part 20 swings counterclockwise in plan view with the ball part 28 as a fulcrum, and the piston part 27 of the advance / retreat part 24 is accommodated in the cylinder part 26 of the advance / retreat guide part 23.

  As a result, the swing mechanism 5 is in the first state, and the swing mechanism 5 shortens the distance between the second support shaft 17 and the glass window 51 as compared to when the optical sheet 6 is in the reference state. Change as follows. Then, as shown in FIG. 7A, the optical sheet 6 has the first support shaft 16 (specifically, the upper end supported by the first support shaft 16) as a fulcrum and the lower end of the optical sheet 6 is placed on the glass window 51. Swing to approach. As a result, the optical sheet 6 is in the first inclined state indicated by the solid line, and the distance between the optical sheet 6 and the glass window 51 is changed.

  Further, the boundary 38 between the transparent layer 9 and the air layer 10 is inclined downward as it goes from the rear to the front. That is, the inclination of the boundary 38 (air layer 10) with respect to the incident angle of sunlight LH is changed.

  Then, a part of the light L2 in the sunlight LH is incident on the transparent layer 9 and then reflected by the boundary 38 (air layer 10) between the transparent layer 9 and the air layer 10 so that the traveling direction is upward. It changes so that it may go, and it progresses toward the ceiling part 53 of the house 50 from the transparent layer 9. FIG. Thereafter, a part of the light L2 is reflected by the ceiling portion 53 to improve the brightness in the house 50.

  On the other hand, as shown by phantom lines in FIG. 8A, when the optical sheet 6 is in the reference state, when the altitude of the sun is reduced, sunlight with a relatively small incident angle with respect to the glass window 51 (hereinafter, the solar altitude is relative The sunlight when it is low is referred to as sunlight LL) enters from outside the house 50 (outdoors) through the glass window 51. Then, a part of the light L3 in the sunlight LL passes through the transparent layer 9 linearly and travels toward the floor 52 of the house 50.

  In order to cause a part of the light L3 of the sunlight LL to travel toward the ceiling portion 53, as shown in FIG. 8B, the swing mechanism 5 is set to the second state, and the optical sheet 6 is moved to the second state. Displace to tilt.

  In order to set the swing mechanism 5 to the second state, the second support shaft 17 is moved forward in a state where the fixing portion 30 is attracted to the inner surface of the glass window 51.

  Then, the telescopic part 20 swings in the clockwise direction in plan view with the ball part 28 as a fulcrum, and the piston part 27 of the advance / retreat part 24 is pulled out from the cylinder part 26 of the advance / retreat guide part 23.

  As a result, the swinging mechanism 5 enters the second state, and the swinging mechanism 5 increases the distance between the second support shaft 17 and the glass window 51 compared to when the optical sheet 6 is in the reference state. Change as follows. Then, as shown in FIG. 8A, the optical sheet 6 has the first support shaft 16 (specifically, the upper end supported by the first support shaft 16) as a fulcrum, and the lower end of the optical sheet 6 extends from the glass window 51. Swings away. As a result, the optical sheet 6 is in the second inclined state indicated by the solid line, and the interval between the optical sheet 6 and the glass window 51 is changed.

  Further, the boundary 38 between the transparent layer 9 and the air layer 10 is inclined upward as it goes from the rear to the front. That is, the inclination of the boundary 38 (air layer 10) with respect to the incident angle of sunlight LL is changed.

  Then, a part of the light L3 in the sunlight LL is incident on the transparent layer 9 and then reflected by the boundary 38 (air layer 10) between the transparent layer 9 and the air layer 10 so that the traveling direction is upward. It changes so that it may go, and it progresses toward the ceiling part 53 of the house 50 from the transparent layer 9. FIG. Thereafter, a part of the light L3 is reflected by the ceiling portion 53 to improve the brightness in the house 50.

  Such a daylighting apparatus 1 includes a swing mechanism 5 as shown in FIGS. 6A to 8B. The swing mechanism 5 can displace the optical sheet 6 so as to change the distance between the optical sheet 6 and the glass window 51 in a state where the daylighting apparatus 1 is installed in the house 50.

  Therefore, even if the altitude of the sun changes with changes in time and date (season) in the daytime, the optical sheet 6 is placed in a suitable position with respect to the glass window 51 according to the altitude of the sun at that time. It can be displaced freely.

  As a result, even with a simple configuration, even if the altitude of the sun changes, it is possible to efficiently illuminate and to improve the brightness of a desired place in the house 50.

  Further, the swinging mechanism 5 changes the distance between the optical sheet 6 and the glass window 51 by changing the distance between the support shaft 3 that supports the optical sheet 6 and the glass window 51. Therefore, the optical sheet 6 can be stably displaced to a suitable position with respect to the glass window 51 so as to correspond to the altitude of the sun.

  Further, when the optical sheet 6 is displaced, the swing mechanism 5 swings the optical sheet 6 with the upper end portion of the optical sheet 6 as a fulcrum. Therefore, the inclination of the optical sheet 6 with respect to the incident angle of sunlight, and thus the inclination of the boundary 38 between the transparent layer 9 and the air layer 10 can be freely changed.

  As a result, even if the altitude of the sun changes, the light traveling direction can be reliably changed by swinging the optical sheet 6 in accordance with the change of the altitude of the sun, and the light can be efficiently and stably collected. be able to.

The swing mechanism 5 changes the distance between the second support shaft 17 and the glass window 51 when the optical sheet 6 is displaced. As a result, the optical sheet 6 swings with the first support shaft 16 as a fulcrum, and the distance between the optical sheet 6 and the glass window 51 is changed. That is, the optical sheet 6 can be reliably swung with the first support shaft 16 as a fulcrum.
3. Second Embodiment Next, a second embodiment of the daylighting apparatus of the present invention will be described with reference to FIGS. 9A to 10B. In the second embodiment, the same reference numerals are given to the same members as those in the first embodiment, and the description thereof is omitted.

  In the first embodiment, as shown in FIGS. 7A and 8A, only the swing mechanism 5 as a displacement mechanism is provided. However, in the second embodiment, as shown in FIG. A slide mechanism 69 as an example of the mechanism is further provided.

  As shown in FIGS. 9B and 9C, the slide mechanism 69 includes a mounting portion 65 and a pair of rail units 66.

  The attachment portion 65 has a substantially prismatic shape extending in the width direction.

  The pair of rail units 66 are disposed on the front surface of the attachment portion 65, and are spaced apart from each other in the width direction. The rail unit 66 includes a rail 67 and a slide member 68.

  As shown in FIG. 9C, the rail 67 is formed in a C shape that is opened inward in the width direction, and extends in the front-rear direction. The front end portion of the rail 67 is fixed to the end portion of the attachment portion 65 in the width direction.

  The slide member 68 is formed in a substantially flat plate shape extending in the up / down and front / rear directions. The dimension of the slide member 68 in the front-rear direction is substantially the same as the dimension of the rail 67 in the front-rear direction. The slide member 68 is accommodated in the rail 67 so as to be slidable in the front-rear direction. Note that the slide member 68 is restricted from being detached from the rail 67 by a restriction portion (not shown).

  Further, as shown in FIG. 9B, the slide member 68 supports the end portion in the width direction of the first support shaft 16 so as not to be relatively rotatable.

  Therefore, the upper end portion of the optical sheet 6 supported by the first support shaft 16 can move in the front-rear direction as the slide member 68 slides as shown in FIGS. 9A and 10A. The optical sheet 6 always hangs down from the first support shaft 16 because the first support shaft 16 cannot rotate.

  As shown in FIG. 9A, such a daylighting apparatus 1 is attached to a wall portion 54 having the glass window 51 so that the optical sheet 6 faces the inner side of the glass window 51 with a space therebetween. Specifically, the attachment portion 65 is attached to the upper peripheral edge of the glass window 51 in the wall portion 54 with a screw or the like. Further, the fixed portion 30 of the swing mechanism 5 is attracted to the glass window 51 as in the first embodiment.

  The slide mechanism 69 includes a first support shaft 16 in the vicinity of the upper peripheral edge of the glass window 51 in the wall portion 54 and a first support as shown in FIG. 10A. The shaft 16 is continuously slid (displaced) between the upper peripheral edge portion of the glass window 51 in the wall portion 54 and the distant state that is relatively far away. As a result, the upper end of the optical sheet 6 is slid and the distance between the optical sheet 6 and the glass window 51 is changed. Note that the slide mechanism 69 can appropriately maintain its posture between the near state and the far state.

  Specifically, as shown in FIG. 9B, when the entire slide member 68 of the rail unit 66 is accommodated in the rail 67, the first support shaft 16 is moved toward the upper peripheral edge of the glass window 51 in the wall portion 54. Therefore, the slide mechanism 69 is disposed in the vicinity.

  When the slide mechanism 69 is in the vicinity state, as shown by a solid line in FIG. 9A, for example, sunlight LL when the altitude of the sun is relatively low is generated from outside the house 50 (outdoors) through the glass window 51. When incident, a part of the light L3 out of the sunlight LL is incident on the transparent layer 9, and then reflected by the boundary 38 between the transparent layer 9 and the air layer 10, and from the transparent layer 9 to the ceiling portion 53 of the house 50. Proceed toward. Thereafter, a part of the light L3 is reflected by the ceiling portion 53 to improve the brightness in the house 50.

  On the other hand, when the slide mechanism 69 is in the vicinity state, as shown by a virtual line in FIG. 9A, for example, sunlight LH when the altitude of the sun is relatively high is outside the house 50 through the glass window 51 ( When entering from the outside), a part of the light L2 in the sunlight LH enters the transparent layer 9 and then reaches the boundary 38 between the transparent layer 9 and the lower air layer 10. A part of the light L2 is reflected by the boundary 38 (lower air layer 10) and travels upward in the transparent layer 9, and then the boundary between the transparent layer 9 and the upper air layer 10. 38, is reflected by the boundary 38 (upper air layer 10), and proceeds downward. Thereafter, part of the light L <b> 2 travels from the transparent layer 9 toward the floor 52 of the house 50.

  In order to make some light L2 of such sunlight LH travel toward the ceiling portion 53, the slide mechanism 69 is displaced from the near state to the far state as shown in FIGS. 10A and 10B.

  In order to displace the slide mechanism 69 from the near state to the far state, the entire slide member 68 (excluding the rear end portion) is pulled out from the rail 67. Then, the first support shaft 16 moves away from the upper peripheral edge of the glass window 51 in the wall portion 54, and the optical sheet 6 swings away from the glass window 51 with the second support shaft 17 as a fulcrum. To do.

  As a result, the slide mechanism 69 is disposed in the far state, and the distance between the optical sheet 6 and the glass window 51 is changed to be larger than when the slide mechanism 69 is in the vicinity state. Therefore, the inclination of the optical sheet 6 with respect to the incident angle of sunlight (the incident angle of sunlight with respect to the optical sheet 6) is changed.

  When the slide mechanism 69 is in a distant state, as shown by a solid line in FIG. 10A, for example, sunlight LH when the altitude of the sun is relatively high is from outside the house 50 (outdoors) through the glass window 51. When incident, a part of the light L2 in the sunlight LH enters the transparent layer 9 and then reaches the boundary 38 between the transparent layer 9 and the lower air layer 10. A part of the light L <b> 2 is reflected by the boundary 38 between the transparent layer 9 and the air layer 10 and travels from the transparent layer 9 toward the ceiling portion 53 of the house 50. Thereafter, a part of the light L2 is reflected by the ceiling portion 53 to improve the brightness in the house 50.

  In addition, when the slide mechanism 69 is in a distant state, as shown by a virtual line in FIG. 10A, for example, sunlight LL when the altitude of the sun is relatively low passes through the glass window 51 outside the house 50 ( When incident from the outside, a part of the light L3 in the sunlight LL passes through the transparent layer 9 linearly and travels toward the floor 52 of the house 50.

  In this case, as shown in FIG. 9A, by moving the slide mechanism 69 from the distant state to the near state, a part of the light L <b> 3 of the sunlight LL travels toward the ceiling 53 of the house 50. Can do.

  According to such 2nd Embodiment, as shown to FIG. 9A-FIG. 10B, the slide mechanism 69 slides the upper end part of the optical sheet 6, when displacing the optical sheet 6. As shown in FIG. Therefore, the relative positional relationship between the optical sheet 6 and the glass window 51 can be reliably changed in the sliding direction of the optical sheet 6, that is, the front-rear direction, and the inclination of the optical sheet 6 with respect to the incident angle of sunlight can be changed. It can be changed reliably.

  As a result, even if the altitude of the sun changes, the optical sheet 6 can be freely arranged at a suitable position with respect to the glass window 51 by sliding the upper end portion of the optical sheet 6 according to the change of the altitude of the sun. It is possible to reliably improve the brightness of a desired place in the house 50. That is, the same operational effects as those of the first embodiment described above can be achieved.

  Further, as shown in FIGS. 9A and 10A, the slide mechanism 69 sets the interval between the first support shaft 16 and the upper peripheral edge of the glass window 51 in the wall portion 54 when the optical sheet 6 is displaced. change. As a result, the upper end portion of the optical sheet 6 slides. Therefore, the interval between the optical sheet 6 and the glass window 51 can be changed reliably.

  In the second embodiment, the daylighting apparatus 1 may include only the fixing unit 30 instead of the swing mechanism 5. In this case, the fixing portion 30 is provided at the approximate center in the width direction of the second support shaft 17. And the relative movement with respect to the glass window 51 of the 2nd support shaft 17 is controlled by making the fixing | fixed part 30 adsorb | suck to the glass window 51. FIG.

  Therefore, the optical sheet 6 can be swung about the second support shaft 17 as a fulcrum by moving the slide mechanism 69 between the near state and the far state. As a result, the interval between the optical sheet 6 and the glass window 51 can be changed as appropriate, and the inclination of the optical sheet 6 relative to the incident angle of sunlight (the incident angle of sunlight with respect to the optical sheet 6) is reliably changed. can do.

  However, it is preferable that the daylighting device 1 includes the swing mechanism 5 and the slide mechanism 69 as in the second embodiment.

If the daylighting apparatus 1 includes the swing mechanism 5 and the slide mechanism 69, the distance between the optical sheet 6 and the glass window 51 can be changed as appropriate by displacing the slide mechanism 69, and the swing is also performed. The distance between the optical sheet 6 and the glass window 51 can be finely adjusted by displacing the mechanism 5. Therefore, the optical sheet 6 can be displaced more reliably with respect to the glass window 51 at a suitable position corresponding to the altitude of the sun.
4). 3rd Embodiment and 4th Embodiment Next, 3rd Embodiment and 4th Embodiment of the lighting apparatus of this invention are described with reference to FIG. 11A and FIG. 11B. In the third embodiment and the fourth embodiment, members similar to those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the first embodiment, as shown in FIG. 5, the daylighting layer 7 of the optical sheet 6 includes a plurality of air layers 10, but in the third embodiment, as shown in FIG. The daylighting layer 7 includes a plurality of low-refractive layers 60 instead of the plurality of air layers 10.

  In the third embodiment, the daylighting layer 7 includes only the transparent layer 9 and the low refractive layer 60, and the transparent layer 9 and the low refractive layer 60 are sequentially and repeatedly arranged in the vertical direction. Yes.

  The plurality of low-refractive layers 60 are arranged in parallel in the vertical direction with a space (transparent layer 9) therebetween. Each of the plurality of low refractive layers 60 is disposed between the transparent layers 9 adjacent to each other in the plurality of transparent layers 9, and is formed in a thin film shape that extends over the entire width direction of the daylighting layer 7.

  The low refractive layer 60 is configured to have a refractive index smaller than that of the transparent layer 9. The relative refractive index of the low refractive layer 60 is, for example, 1.20 or more, preferably 1.34 or more, for example 1.90 or less, preferably 1.80 or less with respect to the refractive index of air. For example, the refractive index of the transparent layer 9 is 0.05 or more, preferably 0.1 or more, such as 0.5 or less, preferably 0.3 or less. The refractive index can be measured with a prism coupler.

  The low refractive layer 60 is preferably formed from a transparent resin material from the viewpoint of ease of processing. Examples of the transparent resin material include a fluorine-based resin and a silicone resin.

  Among such transparent resin materials, a fluorine resin is preferable. More specifically, when the transparent layer 9 is formed from polypropylene, the low refractive layer 60 is preferably formed from a fluororesin.

  Such transparent resin materials may be used alone or in combination of two or more.

  The vertical dimension of such a low refractive layer 60 is smaller than the vertical dimension of the transparent layer 9, for example, 0.1 μm or more, preferably 1 μm or more, for example, 50 μm or less, preferably 10 μm or less. is there. Further, the vertical dimension of the low refractive layer 60 is, for example, 1/5000 or more, preferably 1/200 or more, for example 1/2 or less, preferably with respect to the vertical dimension of the transparent layer 9. 1/10 or less. The dimension in the front-rear direction of the low refractive layer 60 is the same as the dimension in the front-rear direction of the transparent layer 9.

  The light transmittance of the low refractive layer 60 is, for example, 60% or more, preferably 80% or more, more preferably, for light having a wavelength of 440 to 600 nm when the thickness of the low refractive layer 60 is 100 μm. , 90% or more, for example, 98% or less.

  In order to manufacture such an optical sheet 6, as shown in FIG. 11A, a plurality of unit films 37 each including a transparent layer 9 and a low refractive layer 60 are prepared.

  As a method for preparing such a unit film 37, for example, a low refraction layer 60 is disposed on the surface (one surface in the thickness direction) of the transparent layer 9, and a processed sheet is prepared. Examples thereof include a method of cutting out the unit film 37 having a shape, and a method of forming the unit film 37 by disposing the low refractive layer 60 on the surface of the transparent layer 9 processed into a predetermined shape.

  As a method for disposing the low refractive layer 60 on the surface of the transparent layer 9, for example, a method for forming the low refractive layer 60 on the surface of the transparent layer 9 by a known film forming method or a coextrusion method is used. 9 and the method of forming the low refractive layer 60 simultaneously.

  Among such methods for disposing the low refractive layer 60 on the surface of the transparent layer 9, a known film forming method is preferable, and more specifically, a dry process, a wet process, and the like are preferable. A wet process is mentioned.

  Next, the plurality of unit films 37 are laminated in the thickness direction so that the transparent layer 9 and the low refractive layer 60 are adjacent to each other in the lamination direction.

  In such a laminate 31, an adhesive layer may be provided between the unit films 37 adjacent to each other in the lamination direction (between the transparent layer 9 and the low refractive layer 60), or an adhesive layer may be provided. It does not have to be. When the adhesive layer is not provided between the unit films 37 adjacent to each other in the stacking direction, the stacked body 31 is subjected to thermocompression bonding (heating press).

  As described above, the columnar (block-shaped) stacked body 31 extending in the stacking direction is formed.

  Next, as shown in FIGS. 3 and 4, in the same manner as in the first embodiment, the support body 8 is attached to the side surface 32 (surface extending along the stacking direction) of the stack body 31 along the stacking direction. After that, the side layer 33 of the laminate 31 to which the support 8 is attached is cut so that the plurality of unit films 37 are arranged in parallel in the lamination direction of the laminate 31. As a cutting method for cutting the side surface layer 33 of the stacked body 31, the same method as in the first embodiment can be mentioned.

  As a result, as shown in FIG. 11B, the daylighting layer 7 having the support 8 attached to one surface is cut out from the laminated body 31 in a long and flat band shape. Then, the support body 8 is affixed also to the other surface of the lighting layer 7. FIG. Thus, the optical sheet 6 is prepared.

  Also with the daylighting apparatus 1 including such an optical sheet 6, the low refractive layer 60 reflects a part of the light from the outdoors (sunlight L, LH and LL). Therefore, also in such 3rd Embodiment, there can exist an effect similar to above-described 1st Embodiment.

  In the fourth embodiment, as illustrated in FIG. 11B, the daylighting layer 7 of the optical sheet 6 includes a plurality of metal layers 61 instead of the plurality of air layers 10.

  In the fourth embodiment, the daylighting layer 7 includes only the transparent layer 9 and the metal layer 61, and the transparent layer 9 and the metal layer 61 are sequentially and repeatedly arranged so as to be continuous in the vertical direction.

  The plurality of metal layers 61 are arranged in parallel in the vertical direction with an interval (transparent layer 9) therebetween. Each of the plurality of metal layers 61 is disposed between the transparent layers 9 adjacent to each other in the plurality of transparent layers 9, and is formed in a thin film shape that extends over the entire width direction of the daylighting layer 7.

  The metal layer 61 is configured to reflect light and is formed in a thin film shape from a metal material. Examples of the metal material forming the metal layer 61 include metal elements (for example, gold, silver, copper, iron, aluminum, chromium, nickel, etc.), alloys made of a plurality of metal elements, and the like. Silver, aluminum, and an alloy containing them are mentioned, More preferably, aluminum is mentioned. Such a metal material may be used as a single thin film, or two or more thin films may be laminated.

The vertical dimension of the metal layer 61 is not particularly limited as long as light can be sufficiently reflected, but is, for example, 20 nm or more, preferably 30 nm or more, for example, 10 μm (10 ⁴ nm) or less, preferably Is 1 μm (10 ³ nm) or less, more preferably 300 nm or less. The vertical dimension of the metal layer 61 is, for example, 1/10000 or more, preferably 1/2000 or more, for example, 1/10 or less, preferably 1 with respect to the vertical dimension of the transparent layer 9. / 100 or less. The dimension in the front-rear direction of the metal layer 61 is the same as the dimension in the front-rear direction of the transparent layer 9.

  The reflectivity (incident angle 5 °) of the metal layer 61 is, for example, 70% or more, preferably 80% or more, for example, 98% or less, preferably 95% with respect to light having a wavelength of 440 to 600 nm. It is as follows.

  In order to manufacture such an optical sheet 6, as shown in FIG. 11A, a plurality of unit films 37 including a transparent layer 9 and a metal layer 61 are prepared.

  As a method for preparing such a unit film 37, for example, a metal sheet 61 is arranged on the surface of the transparent layer 9 (one surface in the thickness direction), a processed sheet is prepared, and then a predetermined shape is formed from the processed sheet. And a method of forming the unit film 37 by arranging the metal layer 61 on the surface of the transparent layer 9 processed into a predetermined shape.

  As a method of arranging the metal layer 61 on the surface of the transparent layer 9, for example, a method of separately adjusting the transparent layer 9 and the metal layer 61 and laminating them, and forming the metal layer 61 on the surface of the transparent layer 9. The method etc. are mentioned, Preferably, the method of forming the metal layer 61 on the surface of the transparent layer 9 is mentioned.

  Examples of a method for forming the metal layer 61 on the surface of the transparent layer 9 include a method of forming the metal layer 61 on the surface of the transparent layer 9 by a known film forming method. Examples of such a known film forming method include a dry process and a wet process, and a dry process is preferable.

  Next, the plurality of unit films 37 are laminated in the thickness direction so that the transparent layer 9 and the metal layer 61 are adjacent to each other in the lamination direction.

  In such a laminate 31, an adhesive layer may be provided between the unit films 37 adjacent to each other in the lamination direction (between the transparent layer 9 and the metal layer 61), or an adhesive layer may not be provided. Also good. When the adhesive layer is not provided between the unit films 37 adjacent to each other in the stacking direction (between the transparent layer 9 and the metal layer 61), the stacked body 31 is subjected to thermocompression bonding (heating press).

  As described above, the columnar (block-shaped) stacked body 31 extending in the stacking direction is formed.

  Next, as shown in FIGS. 3 and 4, in the same manner as in the first embodiment, the support body 8 is attached to the side surface 32 (surface extending along the stacking direction) of the stack body 31 along the stacking direction. After that, the side layer 33 of the laminate 31 to which the support 8 is attached is cut so that the plurality of unit films 37 are arranged in parallel in the lamination direction of the laminate 31. As a cutting method for cutting the side surface layer 33 of the stacked body 31, the same method as in the first embodiment can be mentioned.

  As a result, as shown in FIG. 11B, the daylighting layer 7 having the support 8 attached to one surface is cut out from the laminated body 31 in a long and flat band shape. Then, the support body 8 is affixed also to the other surface of the lighting layer 7. FIG. Thus, the optical sheet 6 is prepared.

Also with the daylighting apparatus 1 including such an optical sheet 6, the metal layer 61 reflects a part of light from sunlight (sunlight L, LH, and LL). Therefore, also in such 4th Embodiment, there can exist an effect similar to above-described 1st Embodiment.
5. Modification (1) In the first embodiment described above, the fixed portion 30 of the swing mechanism 5 is configured in a sucker shape and is fixed to the inner surface of the glass window 51 as shown in FIG. 7B. The part to which the part 30 is fixed is not particularly limited.

  For example, the fixing portion 30 can be fixed to the peripheral portion of the glass window 51 in the wall portion 54, the ceiling portion 53, a beam, or the like.

Moreover, the structure of the fixing | fixed part 30 will not be specifically limited if it can fix to the peripheral part of the glass window 51 in the glass window 51 and the wall part 54, the ceiling part 53, a beam, etc. For example, the fixed part 30 can also be comprised from a suction cup, a mechanical fastener (magic tape), a magnet, a hook, etc. In addition, when the fixing | fixed part 30 is fixed to the glass window 51, it is preferable that it is a suction cup from an adhesive viewpoint.
(2) Moreover, in said 1st Embodiment, although the lighting device 1 is installed in the ceiling part 53 of the house 50 as shown to FIG. 6A, the installation place of the lighting device 1 is not restrict | limited in particular.

For example, the daylighting apparatus 1 can be installed on the peripheral edge of the glass window 51 in the wall portion 54, a beam, or the like.
(3) In the first embodiment, one swinging mechanism 5 is connected to the approximate center in the width direction of the second support shaft 17 as shown in FIG. The number and arrangement are not particularly limited as long as the optical sheet 6 can be displaced.

For example, one oscillating mechanism 5 can be provided at each of both end portions in the width direction of the second support shaft 17. In this case, the optical sheet 6 can be displaced more reliably at a suitable position with respect to the glass window 51 according to the altitude of the sun.
(4) In the second embodiment, the slide member 68 supports the first support shaft 16 so as not to be relatively rotatable. The slide member 68 supports the first support shaft 16 so as to be relatively rotatable. You can also. In this case, also in the second embodiment, the optical sheet 6 is configured to move between the housed state (not shown) and the extended state when the first support shaft 16 rotates.
(5) Moreover, the optical sheet 6 will not be restrict | limited especially if the advancing direction of at least one part of the light to permeate | transmit can be changed. For example, the daylighting apparatus 1 may include a daylighting sheet described in JP 2012-255951 A, instead of the optical sheet 6 of the first to fourth embodiments.

  Also by such a modification, there can exist an effect similar to above-described 1st Embodiment-4th Embodiment. In addition, each of these 1st Embodiment-4th Embodiment and a modification can be combined suitably.

DESCRIPTION OF SYMBOLS 1 Daylighting device 3 Support shaft 5 Oscillation mechanism 6 Optical sheet 16 1st support shaft 17 2nd support shaft 50 House 51 Glass window 69 Slide mechanism

Claims (6)

A daylighting device configured to be installed in a building having a window,
When the daylighting device is installed in the building, it is arranged so as to face the window, and is configured to transmit light. When the light is transmitted, the traveling direction of at least part of the transmitted light is changed. An optical sheet;
In the state where the daylighting device is installed in the building, it is provided with a displacement mechanism for displacing the optical sheet so as to change the interval between the optical sheet and the window. Daylighting equipment. A support portion for supporting the optical sheet;
The displacement mechanism is configured to displace the optical sheet by changing a distance between the support portion and the window or a peripheral edge portion of the window in the building, and between the optical sheet and the window. The daylighting apparatus according to claim 1, wherein the daylighting apparatus is configured to change the interval. The optical sheet is arranged so as to extend in the vertical direction in a state where the lighting device is installed in the building,
The daylighting apparatus according to claim 2, wherein the displacement mechanism swings the optical sheet with an upper end portion of the optical sheet as a fulcrum. The support part is
A first support for supporting the upper end of the optical sheet;
A second support part for supporting a lower end part of the optical sheet,
The displacement mechanism swings the optical sheet with the first support portion as a fulcrum by changing a distance between the second support portion and the window or a peripheral portion of the window in the building. The daylighting apparatus according to claim 3, wherein the daylighting apparatus is configured to change an interval between the optical sheet and the window. The optical sheet is arranged so as to extend in the vertical direction in a state where the lighting device is installed in the building,
The daylighting apparatus according to claim 2, wherein the displacement mechanism slides the optical sheet. The support portion includes a first support portion that supports an upper end portion of the optical sheet,
The displacement mechanism is configured to slide the optical sheet by changing a distance between the first support portion and the window or a peripheral edge portion of the window in the building, and the optical sheet and the window. The daylighting device according to claim 5, wherein the daylighting device is configured to change an interval between the two.

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