JP2018040139A - Louver structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a louver structure that eliminates glare on an outdoor side, is light-weight and easy to manufacture, and enables natural lighting on an indoor ceiling side.SOLUTION: A louver structure includes a plurality of resin blades 12 disposed in a direction along a wall surface of a building leaving a prescribed interval, and a support part 14 for supporting the blade 12. The blade 12 includes, on a top surface, a first parabolic curved surface 21 curved to protrude downward, a second parabolic curved surface 22 continuing from an outdoor side of the first parabolic curved surface 21 and curved to protrude downward, and on an undersurface, a third parabolic curved surface 23 having an edge part 23p on an indoor side continuing from an edge part 21p on the indoor side of the first parabolic curved surface 21 through a connection part 26 and separating from the first parabolic curved surface 21 toward the outdoor side and curved to protrude upward, and a first flat surface 24 connecting an edge part 22q on the outdoor side of the second parabolic curved surface 22 with the edge part 23q on the outdoor side of the third parabolic surface 23. A mirror surface sheet 28 is provided on the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a louver structure, and more particularly to a louver structure suitable for daylighting.

  Conventionally, a building is sometimes provided with a louver in order to block rain and the like and to selectively take in light and wind into the room. The louver is formed by arranging a plurality of elongated plates called blades or slats in parallel with a gap in the frame.

  For example, Patent Literature 1 discloses a daylighting louver unit that can be arranged on a wall of a building and introduces external natural light into the building. This daylighting louver unit basically has a box-shaped housing, a plurality of louvers having a generally cross-sectional shape housed in the housing, and a predetermined position in the longitudinal direction of each louver (blade) inside the housing. And a louver support member provided to prevent the louver from bending.

  Patent Document 2 discloses a plurality of slats (blades) each having a light shading curve that blocks low-hardness components of sunlight from entering the room, a light reflecting curve that reflects incident sunlight, and a light redirecting slope. A Mini-Optical Light Shelf (MOLS) daylighting system (louver structure) is disclosed.

JP 2014-020138 A US Patent Application Publication No. 2003/0112518

  However, the daylighting louver unit disclosed in Patent Document 1 is made of metal, and since all surfaces of the louver having a generally triangular cross-sectional profile are reflecting surfaces, light from the outside is reflected in each louver. There is a problem that the light is reflected by the surface facing the outdoor, and the light is directed outward from the surface, which is dazzling. In addition, as the daylighting louver unit becomes larger, there is a problem that the weight increases, and manufacturing takes time and labor.

  Further, in the louver structure disclosed in Patent Document 2, the light shading curve blocks the low hardness component of sunlight into the room, but it essentially eliminates the problem of glare when viewed from the outside. It was difficult.

  The present invention provides a louver structure that eliminates glare on the outdoor side, is light and easy to manufacture, and can be lit on the ceiling side of the room.

  The louver structure according to claim 1 includes a plurality of resin blades arranged at predetermined intervals in one direction along a wall surface of a building, and a support portion that supports the blades. A first parabolic curved surface curved downwardly on the upper surface, and a second parabolic curved surface connected to the outdoor side of the first parabolic curved surface and curved convexly downward. And having an indoor end on the lower surface connected to the indoor end of the first parabolic curved surface via a connecting portion, and upwardly moving away from the first parabolic curved surface toward the outdoor side. A third paraboloid curved in a convex shape toward the convex side, and a first plane connecting the outdoor end of the second paraboloid and the outdoor end of the third paraboloid. A mirror surface sheet is provided on the first parabolic curved surface, the second parabolic curved surface, and the third parabolic curved surface.

  In the above configuration, since the blades are made of resin, even if the blades are lengthened to attach the louver structure to a large building, the weight does not increase rapidly compared to the metal blades, and the louver structure is reduced in weight. This facilitates handling of the blades. Further, when designing the shape of the blade, the degree of freedom is large, and a manufacturing method such as extrusion molding can be adopted, which makes it easy to manufacture the blade.

In the above-described configuration, light incident on the louver structure from the upper outdoor side to the lower indoor side is captured in the space between the first plane and the second paraboloid formed between the blades. Is done. The light trapped in the aforementioned space is reflected by the second paraboloid which is provided with a mirror sheet and becomes a reflection surface, and the first paraboloid and the third paraboloid formed between the blades. Proceed to the space between. The light that has traveled to the space is reflected by the first parabolic curved surface or the third parabolic curved surface, and is taken into the indoor ceiling side while being appropriately diffused.
On the other hand, the light incident substantially horizontally on the louver structure from the outdoor side toward the indoor side, and the light incident on the louver structure from the lower outdoor side toward the upper indoor side are not provided with a specular sheet. It is absorbed or diffused by the first flat surface which is a non-reflective surface, and does not become dazzling light traveling in a predetermined direction. Therefore, even if the louver structure is viewed from a substantially horizontal direction on the outdoor side or a lower side on the indoor side, no glare is felt.

  Therefore, according to the above-described configuration, dazzling outside the room is essentially eliminated without generating dazzling light directed from the first plane to the outside. Further, by providing a mirror sheet on the resin blade, a louver structure excellent in compactness and weight reduction is obtained, and light from the outside is collected on the indoor ceiling side.

  The louver structure according to claim 2, wherein the first parabolic curved surface is one parabolic curved surface having a virtual optical axis intersecting the wall surface as a central axis from the indoor upper side of the building toward the outdoor lower side. Of these, the second paraboloid is a cut surface near the vertex of the curved surface of the other paraboloid that faces the one paraboloid about the virtual optical axis. The third paraboloid is a paraboloid which is parallel to the other paraboloid.

According to the above-described configuration, the outdoor space between the blades has a second paraboloid curved surface as a part of the outer edge, and a first portion centered on a connection portion between the third paraboloid curved surface and the first plane. It functions as a light collecting space. On the other hand, the space on the indoor side between the blades is a virtual connection that is made when the first paraboloid and the third paraboloid are part of the outer edge, and the outer ends of these curves are extended. It functions as a second light collection space in which the vicinity of the contact (vertex) is cut out and an opening is provided.
Light that has entered the louver structure having the curved surface profile described above from the outdoor side is reflected by the first plane, and more is captured in the first light collection space between the blades. Moreover, the light reflected by the second parabolic curved surface passes through the opening and enters the second light collection space. Since the virtual optical axis of the second light collecting space is directed toward the ceiling, the light emitted from the second light collecting space diffuses in the width corresponding to the width of the second light collecting space and travels toward the ceiling. Daylighted.

  4. The louver structure according to claim 3, wherein the specular sheet has an upper surface of the connection portion extending from the indoor side of the second parabolic curved surface to the second parabolic curved surface and the first parabolic curved surface. And from the lower surface of the connecting portion and the indoor side end of the third parabolic curved surface to the vicinity of the indoor side of the outdoor side end portion.

  According to the above-described configuration, the mirror surface sheet 28 is arranged as described above, so that there is no possibility that the end of the mirror surface sheet 28 protrudes from the blades 12, and the mirror surface sheet 28 is reliably prevented from peeling off. The

  The louver structure according to claim 4 is characterized in that a specular reflection preventing structure is provided on the first plane.

  According to the above-described configuration, when light incident on the louver structure from the outdoor side is irradiated on the first plane, it is directed in a predetermined direction outside the room as compared with the case where no specular reflection preventing structure is provided on the first plane. The amount of reflected light is suppressed, and glare on the outdoor side is reliably eliminated.

The louver structure according to claim 5, wherein the blade is made of a resin made of a mixture of a polymer of acrylonitrile / butyl acrylate / styrene and a polymer of acrylonitrile / ethylene propylene / styrene. .
In the louver structure according to claim 6, the blade may be a hollow body made of the resin.

According to the above-described configuration, by using the above-described resin having the excellent characteristics that the specular reflectance is low at a wavelength of 550 nm close to the central wavelength of sunlight, the diffuse reflectance is high, the thermal characteristics are excellent, and the processing is easy. The blades can be easily manufactured, and the lighting characteristics of the louver structure are improved.
Moreover, by making a blade | wing into a cross-section hollow body as mentioned above, a long blade | wing can be accurately manufactured easily, for example using extrusion molding.

  The louver structure according to claim 7 is characterized in that the specular sheet includes a metal film having a specular reflectance of 80% or more at the center wavelength of incident light.

  According to the above-described configuration, when the light incident on the louver structure from the outdoor side is reflected by the first plane toward the second paraboloid, the first paraboloid compared to the case where the above-described specular sheet is not used. The amount of light reflected on the curved surface, the second parabolic curved surface, and the third parabolic curved surface and collected on the indoor ceiling side is increased, so that better lighting is performed.

  The louver structure according to claim 8, wherein the support portion includes a resin spacer disposed between the blades and a core member that penetrates and supports the blade and the spacer. It is characterized by.

  According to the above-described configuration, since the blades are supported by the spacer and the core material, the weight can be reduced as compared with the conventional louver structure supported by a large frame or the like. Moreover, according to the above-described configuration, the blades are stably arranged in a state where the blades are spaced apart by a predetermined distance. Furthermore, since the spacer is made of resin, the spacer and the louver structure can be reduced in weight, and the spacer can be handled easily. Similar to the blade, the degree of freedom in designing the spacer is large, and it is easy to manufacture using a method such as extrusion.

  The louver structure according to claim 9, wherein the spacer is formed in a cylindrical shape, and a first fitting portion capable of fitting a connecting portion between the third parabolic curved surface and the first plane is formed at an upper portion. And a second fitting portion capable of fitting a connecting portion between the first parabolic curved surface and the second parabolic curved surface is formed at a lower portion.

  In the above-described configuration, when the spacer is disposed between the blades, the connecting portion between the third parabolic curved surface of the upper blade and the first plane is fitted to the first fitting portion with respect to the spacer, A connecting portion between the first paraboloid and the second paraboloid of the lower blade with respect to the spacer is fitted into the second fitting portion. According to such a configuration, since the relative positions of the blades are fixed with high accuracy, the relative positions of the first parabolic curved surface, the second parabolic curved surface, the third parabolic curved surface, and the first plane are also accurate. Fixed and good daylighting.

  The louver structure according to the present invention eliminates glare on the outdoor side, is light and easy to manufacture, and can be lit on the indoor ceiling side.

1 is a cross-sectional view illustrating a louver structure according to an embodiment to which the present invention is applied and a part of a building in which the louver structure is installed. It is a figure which shows the louver structure of one Embodiment to which this invention is applied, and is the front view which looked at this louver structure from the outdoor side. It is a figure which shows the louver structure of one Embodiment to which this invention is applied, and is sectional drawing seen by the arrow at XX shown in FIG. It is the schematic for demonstrating the shape of the blade | wing of the louver structure of one Embodiment to which this invention is applied.

  Hereinafter, an embodiment of a louver structure to which the present invention is applied (hereinafter, sometimes referred to as a louver structure of the present embodiment) will be described with reference to the drawings. The drawings used in the following description are schematic, and the ratios of length, width, and thickness are not necessarily the same as actual ones, and can be changed as appropriate.

  As shown in FIG. 1, the louver structure 10 of this embodiment is provided along the D1 direction (one direction) parallel to the outer wall (wall surface) W of a building B such as a high-rise building.

The building B has a plurality of hierarchies L partitioned by the partition plates 2 and the beams 4 along the direction D1. On the upper surface of the partition plate 2, a floor plate 8 is provided at an interval. Each level L is partitioned into a living room I and a ceiling T by a ceiling plate 6 along the direction D1. On the outer wall W of the building B and in the vicinity thereof, a glass plate having a plate surface along the direction D1 and a space sandwiched between the glass plates are provided as necessary, and a so-called double skin curtain wall structure is adopted. Has been.
In the following, in the D2 direction orthogonal to the D1 direction, the side where the living room I and the ceiling T are formed with respect to the outer wall W is referred to as “indoor side”, and the opposite side is referred to as “outdoor side”.

  The structure of the building B shown in FIG. 1 and the above description are merely examples of the building to which the louver structure 10 is attached. The louver structure 10 can be attached if it is a building in which light such as sunlight can enter from the outdoor side, and the structure of such a building is not limited to the above-described building.

  The louver structure 10 is attached to the upper part of the living room I on the indoor side of the outer wall W of the building B. By arranging the louver structure 10 in this way, the light irradiated on the outer wall W from the outdoor upper side is taken into the louver structure 10.

  As shown in FIG. 2, the louver structure 10 includes a plurality of resin blades 12 arranged at predetermined intervals, and a support body 14 that supports the plurality of blades 12.

As shown in FIG. 3, the blade 12 has a generally triangular cross section. A first parabolic curved surface 21 and a second parabolic curved surface 22 are provided on the upper surface 12 a of the blade 12. The first parabolic curved surface 21 is a surface curved in a convex shape downward. The second parabolic curved surface 22 is a surface that is connected to the outdoor side of the first parabolic curved surface 21 and curves in a convex shape downward.
A third parabolic curved surface 23 and a first flat surface 24 are provided on the lower surface 12 b of the blade 12. The third parabolic curved surface 23 is connected to the indoor side end portion 21p of the first parabolic curved surface 21 through the connecting portion 26 at the indoor side end portion 23p, and from the first parabolic curved surface 21 toward the outdoor side. It is a surface that curves in a convex shape toward the upper side while being separated. The first flat surface 24 is a surface that connects the outdoor end 22q of the second parabolic curved surface 22 and the outdoor end 23q of the third parabolic curved surface 23. In the example of FIG. It is an inclined surface that moves inward.

  A mirror surface sheet 28 is provided on the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23. That is, the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23 are reflecting surfaces that can reflect the light irradiated on the outer wall W from the upper outdoor side with high reflectance. On the other hand, the first plane 24 is a non-reflective surface on which much of the irradiated light is absorbed or diffused.

  In FIG. 3, the mirror surface sheet 28 is illustrated at a position slightly separated from each of the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23 for easy understanding. However, the mirror surface sheet 28 is in close contact with the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23.

  Further, in the present embodiment, the specular sheet 28 is placed on the upper surface of the connecting portion 35, the first parabolic curved surface 21, and the connecting portion 26 from the front side (near the indoor side) of the second parabolic curved surface 22 on the outdoor side. It is provided over. The specular sheet 28 is provided from the lower surface of the connecting portion 26 and the indoor side end 23p of the third parabolic curved surface 23 to the front side of the outdoor side end 23q (near the indoor side). In other words, the shortest connection between the side surface of the connecting portion 26, the connecting portion 38, the first plane 24, the outdoor end portion 22q of the first parabolic curved surface 21, and the outdoor end portion 24q of the first plane 24. The mirror sheet 28 is not provided in the portion. By arranging the mirror surface sheet 28 in this manner, the end portion of the mirror surface sheet 28 does not protrude from the outdoor end portion 22q of the second parabolic curved surface 22 to the outdoor side, and the upper surface and the lower surface of the connection portion 26 are not exposed. They do not protrude from the inside of the room to the indoor side, and do not protrude from the outdoor side end 23q of the third parabolic curved surface 23 to the outdoor side. That is, there is no possibility that the mirror surface sheet 28 protrudes from the blades 12, and the mirror surface sheet 28 is reliably prevented from peeling off.

  In the above-described configuration, the second parabolic curved surface 22 plays a role of capturing light (for example, light (1) shown in FIG. 3) incident on the outer wall W from the upper outdoor side to the lower indoor side, such as sunlight. I'm in charge. The first parabolic curved surface 21 and the third parabolic curved surface 23 play a role of emitting the light reflected while being captured by the second parabolic curved surface 22 toward the indoor side upward, and the first flat surface 24. Is incident on the louver structure 10 from the outdoor side to the louver structure 10 substantially horizontally with respect to the louver structure 10 (for example, the light (2) shown in FIG. 3) and from the lower outdoor side toward the upper indoor side. It plays a role of absorbing or diffusing incident light (for example, light (3) shown in FIG. 3).

  If each of the first parabolic curved surface 21, the second parabolic curved surface 22, the third parabolic curved surface 23, and the first flat surface 24 plays the above-described role, the detailed shape and profile of each surface are not limited. An example of a suitable surface shape and design policy that satisfactorily fulfills the above-mentioned role is disclosed in Japanese Patent No. 5932823, and is schematically shown in FIG.

  FIG. 4 shows the first parabolic curved surface 21, the second parabolic curved surface 22, the third parabolic curved surface 23, and the first flat surface 24 of one blade 12A having the preferred shape described above, and other configurations are omitted. Is.

  As shown in FIG. 4, the first parabolic curved surface 21 has, as a central axis, a virtual optical axis J2 that intersects a virtual axis J1 parallel to the outer wall W of the building B from the indoor upper side toward the outdoor lower side. The curved surface obtained by cutting out the vicinity of the vertex of the curved surface (dotted line DL1 in FIG. 4) of the one parabolic curved surface 31. The third parabolic curved surface 23 is the vertex of the curved surface of the other virtual parabolic curved surface 32 (the other parabolic curved surface, the two-dot chain line in FIG. 4) that faces the one parabolic curved surface 31 around the virtual optical axis J2. The end 32p on the indoor side of the curved surface cut out in the vicinity of C1 (dotted line DL2 in FIG. 4) is moved in parallel to the lower side of the end 21p on the indoor side of the first parabolic curved surface 21. This is a parabolic curved surface parallel to the virtual parabolic curved surface 32. The virtual parabolic curved surface 32 overlaps with the third parabolic curved surface 23 of the blade 12 </ b> B disposed above the blade 12 </ b> A having the first parabolic curved surface 21. That is, the first parabolic curved surface 21 of the blade 12A and the third parabolic curved surface 23 of the blade 12B form a condensing space S2 (the second condensing space described above) having the virtual optical axis J2 as an optical axis. Yes.

  The second paraboloid 22 is a part of another paraboloid 33 (dotted line in FIG. 4) that focuses on the outdoor end 32q of the virtual paraboloid 32, and the vertex C2 of the paraboloid 33. To the end portion 21q on the outdoor side of the first parabolic curved surface 21 is a curved surface. That is, the second parabolic curved surface 22 of the blade 12A forms a condensing space S1 (the aforementioned first condensing space) having a virtual optical axis (not shown) as an optical axis. The indoor side end 24p of the first flat surface 24 of the blade 12B is the focal point of the parabolic curved surface 33.

  The position of the outdoor end portion 22q of the second parabolic curved surface 22 is the direction of light incident on the outer wall W from the upper outdoor side to the lower indoor side, such as sunlight, that is, the angle of the incident light with respect to the virtual axis J1. Is set as appropriate. The outdoor end 24q of the first plane 24 is spaced apart from the outdoor end 22q of the second parabolic curved surface 22 by a distance corresponding to the minimum processing accuracy of the material of the blade 12. 22 is connected to the outdoor end 22q.

  As can be seen from the preferred shapes and design policies of the respective surfaces described above, the first parabolic curved surface 21, the second parabolic curved surface 22, the third parabolic curved surface 23, and the first flat surface 24 are arranged from the outdoor side to the indoor side. Are designed to be related to each other and appropriately designed to propagate, absorb, or diffuse the light incident on them.

  Even if the first plane 24 is provided with a specular antireflection structure (not shown) for the purpose of enhancing the non-reflectivity of the first plane 24 that plays a role of absorbing or diffusing light incident on the louver structure 10. Good. For example, an antireflection film may be provided on the first plane 24, and an antireflection paint may be applied to the first plane 24. Further, the first flat surface 24 may be given a matte decoration, or may be subjected to a graining process or the like.

  The blades 12 are made of resin. The resin constituting the blades 12 is not particularly limited, but preferably has a specular reflectance of 10% or less, more preferably 5% or less, at the central wavelength of light incident on the louver structure 10. Moreover, as resin which comprises the blade | wing 12, in the center wavelength of the light which injects into the louver structure 10, what has a diffuse reflectance of 75% or more is preferable, and what is 75% or more is more preferable. As such a suitable resin, for example, acrylonitrile butyl has a low specular reflectance at a wavelength of 550 nm close to the central wavelength of sunlight, a high diffuse reflectance, excellent lightness and thermal characteristics, and easy to process. Examples thereof include a resin composed of a mixture of an acrylate / styrene polymer and an acrylonitrile / ethylene propylene / styrene polymer. When the resin made of a mixture of a polymer of acrylonitrile, butyl acrylate, and styrene and a polymer of acrylonitrile, ethylene propylene, and styrene is white, the specular reflectance is suppressed to about 3% at a wavelength of 550 nm. The reflectance reaches about 80%.

  As shown in FIG. 3, it is preferable that the blade | wing 12 is a hollow body which consists of the above-mentioned resin. Thus, the weight reduction of the blade | wing 12 is accelerated | stimulated because the blade | wing 12 is a hollow body. When a hollow body is used, the thickness of the outer peripheral portion of the blade 12 may be appropriately set in consideration of the processing characteristics of the resin constituting the blade 12 and the strength after processing. For example, when a resin comprising a mixture of an acrylonitrile / butyl acrylate / styrene polymer and a polymer of acrylonitrile / ethylene propylene / styrene is employed as the resin constituting the blade 12, the thickness of the blade 12 is 2 to 3 mm. Can be within range.

  The connecting portion 26 connects the end portion 21p on the indoor side of the first parabolic curved surface 21 and the end portion 32p on the indoor side of the third parabolic curved surface 23 with the processing characteristics of the resin constituting the blade 12, the strength after processing, and the like. This is for connecting with a suitable thickness considering the above.

  The resin blades 12 can be easily manufactured by, for example, extrusion using a mold having a flow path similar to the cross-sectional shape of the blades 12.

  The specular sheet 28 is not particularly limited, but in the wavelength band of light incident on the louver structure 10, the specular reflectance is preferably 80% or more, and more preferably 83% or more. Further, the mirror sheet 28 preferably has a diffuse reflectance of 5% or less, and more preferably 3% or less in the wavelength band of light incident on the louver structure 10. In particular, the specular sheet 28 preferably has a specular reflectivity of 80% or more at the center wavelength of light incident on the louver structure 10, and includes a metal film having such specular reflectivity. preferable. Further, the mirror sheet 28 preferably has a breaking strength of 20 MPa or more. Since the mirror sheet 28 has such excellent elongation characteristics, the surfaces on which the mirror sheet 28 is provided, such as the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23. When provided on a curved surface that curves convexly with respect to the direction of the opposite surface, the mirror sheet 28 adheres well to these curved surfaces in a state where wrinkles and sagging do not occur, and the optical characteristics of the louver structure 10 Is stable.

  As a suitable mirror surface sheet 28, for example, a bright film including an aluminum film can be used. As such a suitable glitter film, for example, it is commercially available because it has a low specular reflectance at a wavelength of 550 nm close to the central wavelength of sunlight, a high diffuse reflectance, excellent lightness and thermal characteristics, and easy to process. Examples of the mirror reflection film include Diarac (registered trademark, distributor: Nippon Ply Co., Ltd.) and “JBRIGHT” series (distributor: Nippon Ply Co., Ltd.). For example, the glitter film used in the present embodiment is, for example, a 150 μm ABS (acrylonitrile, butadiene, styrene copolymer) base film layer, a 12 μm adhesive layer, and a metal glitter layer made of aluminum, for example, from the bottom side. And weather-resistant PET (polyethylene terephthalate), a coating layer, and process PET. In the glitter film used in the present embodiment, the specular reflectivity reaches about 86.27% (the specular reflectivity is 99.99%) at a wavelength of 550 nm, and the diffuse reflectivity is suppressed to about 0.01%. Further, the glitter film used in the present embodiment has a high specular reflectance (specular reflectivity of 99.90% or more) of 82% or more with respect to light having a wavelength of 400 nm to 700 nm in the visible light range. In addition to aluminum, the metal bright layer may be copper, nickel, chromium, titanium, stainless steel, cobalt, molybdenum, zirconium, tungsten, palladium, indium, tin, gold, or silver.

  Although the method of providing the mirror surface sheet 28 on the first parabolic curved surface 21, the second parabolic curved surface 22 and the third parabolic curved surface 23 of the blade 12 is not particularly limited, the mirror surface sheet 28 has heat resistance. Or when it has the outstanding thermal characteristic, it can manufacture by extrusion molding in parallel with the extrusion molding of the blade | wing 12. FIG. For example, the mirror surface sheet 28 can be easily manufactured by extrusion molding using a mold having flow paths similar to the cross-sectional shapes of the blades 12 and the mirror surface sheet 28 and provided on the predetermined curved surface. In addition, you may affix the mirror sheet 28 to the 1st parabolic curved surface 21, the 2nd parabolic curved surface 22, and the 3rd parabolic curved surface 23 of the blade | wing 12 after shaping | molding by a well-known sticking method.

  As shown in FIG. 2, the support portion 14 that supports the plurality of blades 12 includes a resin spacer 15 disposed between the blades 12 adjacent to each other in the D1 direction, a plurality of blades 12, and a plurality of spacers. 15 and a core member 16 that penetrates and supports 15.

  The spacer 15 is a member for maintaining the relative position between the blades 12 and 12 adjacent in the D1 direction. As shown in FIG. 3, the spacer 15 is formed in a cylindrical shape, and a through-hole 15 h through which the core material 16 can penetrate is formed along the axial direction of the cylindrical member. The inner diameter of the through hole 15 h is set slightly larger than the outer diameter of the core material 16. A first fitting portion 41 capable of fitting the connecting portion 36 between the first parabolic curved surface 21 and the second parabolic curved surface 22 of the blade 12 is formed on the spacer 15. Further, a second fitting portion 42 that can fit the connecting portion 38 between the third parabolic curved surface 23 and the first flat surface 24 of the blade 12 is formed below the spacer 15.

  Specifically, the spacer 15 has a cylindrical shaft portion 15A on the inner side in the radial direction around the axis, that is, the virtual axis J1, and has a space holding portion 15B on the outer side in the radial direction of the shaft portion 15A. . As described above, the through hole 15h is formed in the shaft portion 15A. A first fitting portion 41 is formed on the upper portion of the space holding portion 15B in a state where it is cut out in the same shape as the connecting portion 36, the third parabolic curved surface 23 in the vicinity thereof, and the first plane D1. In the lower part of the space holding part 15B, the second fitting part is formed in a state where the lower part of the cylinder is cut out in the same shape as the shape of the first parabolic curved surface 21 and the second parabolic curved face 22 in the vicinity thereof. 42 is formed.

  When the first fitting portion 41 of the spacer 15 is fitted to the connecting portion 36 on the outdoor side of the first parabolic curved surface 21 of the blade 12, the lower portion of the shaft portion 15 </ b> A of the spacer 15 is placed inside the blade 12. A penetrating through hole 21h is formed. On the other hand, on the outdoor side of the third paraboloid 23 of the blade 12, when the connecting portion 38 is fitted to the second fitting portion 42, the upper portion of the shaft portion 15 </ b> A of the spacer 15 penetrates into the blade 12. Possible through-holes 23h are formed. The relative position between the adjacent blades 12 is fixed as designed with high accuracy by such a fitting state and a penetrating state between members. For example, the width dimension of the blade 12 in the D2 direction is 60.96 mm, and the linear distance between the outer end portions 22q of the second parabolic curved surfaces 22 of the blades 12 and 12 adjacent in the D1 direction is 26.45 mm. In this case, it is preferable that the linear distance between the connecting portion 38 of the upper blade 12 and the connecting portion 36 of the lower blade 12 among the blades 12 and 12 adjacent in the D1 direction is maintained at 7.53 mm. In this way, the relative position between the blades 12 and 12 for which accuracy is required can be fixed well.

The resin constituting the spacer 15 is not particularly limited. However, since the spacer 15 is disposed in the light passing region that is incident on the louver structure 10, the spacer 15 is transparent to the wavelength band of the light incident on the louver structure 10. A lightweight one is preferable. As such a resin, for example, acrylic or a copolymer of methyl acrylate and methyl methacrylate mixed with methyl methacrylate (residual monomer) (for example, commercially available parapet (registered trademark, sales manufacturer: Kuraray Co., Ltd.)) ) And the like.
The spacer 15 can be easily manufactured by, for example, extrusion molding.

  The core material 16 is comprised by the rod-shaped member. The material of the core material 16 is not particularly limited, but is preferably light and has a strength capable of supporting the plurality of blades 12 and the plurality of spacers 15. Examples of the material of the core material 16 include aluminum and stainless steel (SUS).

  According to the louver structure 10 of the present embodiment described above, the light incident substantially horizontally on the louver structure 10 from the outdoor side toward the indoor side, and the louver structure 10 from the lower outdoor side toward the indoor upper side. The incident light can be absorbed or diffused by the first flat surface 24 which is a non-reflecting surface on which the mirror sheet 28 is not provided, and generation of dazzling light traveling in a predetermined direction can be prevented. Therefore, the glare when the louver structure 10 is viewed from the substantially horizontal direction on the outdoor side or the lower side on the indoor side can be essentially eliminated.

  Further, in the louver structure 10 of the present embodiment, the specular reflection preventing structure is provided on the first flat surface 24, so that the light incident substantially horizontally on the louver structure 10 from the outdoor side toward the indoor side, and the outdoor lower side Thus, the specular reflection of light incident on the louver structure 10 from the indoor side to the upper side of the room can be reliably suppressed, and the glare when the louver structure 10 is viewed from the substantially horizontal direction outside the room or from the lower side of the room can be further suppressed. .

  On the other hand, according to the louver structure 10 of this embodiment, the light incident on the louver structure 10 from the upper outdoor side to the lower indoor side is the first of the upper blades 12 among the blades 12 and 12 adjacent in the D1 direction. It can be captured in the space between the plane 24 and the second parabolic surface 22 of the lower blade 12. The light captured in the above-described space is reflected by the second paraboloid 22 which is provided with a mirror surface sheet 28 on the lower blade 12 and becomes a reflection surface, and the mirror sheet 28 is provided on the lower blade 12. Then, the first parabolic curved surface 21 that becomes the reflecting surface and the third parabolic curved surface 23 that becomes the reflecting surface are provided with the specular sheet 28 in the upper blade 12 to proceed to the space. The light that has traveled to the space is reflected by the first parabolic curved surface 21 and the third parabolic curved surface 23 and is emitted toward the ceiling side of the living room I while being appropriately diffused. By proceeding and emitting the light in this way, the light incident on the louver structure 10 from the upper outdoor side to the lower indoor side can be well collected toward the ceiling side of the living room I.

  Further, the first parabolic curved surface 21 is a curved surface obtained by cutting out the vicinity of the vertex C1 of the curved surface of one parabolic curved surface 31 with the virtual optical axis J2 as the central axis, and the third parabolic curved surface 23 is the other virtual surface. A parabolic curved surface parallel to the parabolic curved surface 32, and the second parabolic curved surface 22 is the outdoor side of the curved surface obtained by cutting out the vicinity of the vertex C <b> 2 of the curved surface of the other virtual parabolic curved surface 32 around the virtual optical axis J <b> 2. By making it a part of another paraboloid 33 having the end 32q as a focal point, the first plane 24 of the upper blade 12 and the first blade 12 of the lower blade 12 out of the blades 12 and 12 adjacent to each other in the direction D1. A space between the two parabolic curved surfaces 22 is made to function as the light collecting space S1, and a space between the third parabolic curved surface 23 of the upper blade 12 and the first parabolic curved surface 21 of the lower blade 12 is collected. It can function as the light space S2. By adopting a configuration in which the light collecting spaces S1 and S2 are appropriately connected in this manner, light incident on the louver structure 10 from the upper outdoor side to the lower indoor side is efficiently collected on the ceiling side of the living room I. be able to.

  Further, the specular sheet 28 is provided from the front side of the outdoor end portion 22q of the second parabolic curved surface 22 to the connecting portion 35, the first parabolic curved surface 21, and the upper surface of the connecting portion 26, and the lower surface of the connecting portion 26, By providing the third parabolic curved surface 23 from the indoor side end 23p to the front side of the outdoor side end 23q, the end of the specular sheet 28 does not protrude from the blade 12 and the peeling of the specular sheet 28 is ensured. Can be prevented. Thereby, the louver structure 10 can be satisfactorily used over a long period of time.

  Furthermore, as the mirror surface sheet 28, by using a sheet including a metal film having a mirror surface reflectance of 80% or more at the center wavelength of the light incident on the louver structure 10, the upper surface of the blades 12, 12 adjacent in the D1 direction is used. Light captured in the space between the first flat surface 24 of the blade 12 and the second parabolic surface 22 of the lower blade 12 can be reflected with low loss and emitted to the ceiling side of the living room I. .

And according to the louver structure 10 of this embodiment, since the blade | wing 12 is resin, even when the blade | wing 12 becomes long in order to attach the louver structure 10 to large sized buildings B, such as a high-rise building, etc., for example. Thus, compared with the metal blades used in the conventionally proposed louver structure, a rapid increase in weight can be suppressed and the blades 12 can be reduced in weight. By making the blade 12 a hollow body, it is possible to further reduce the weight, and it is easy to adopt extrusion molding as a method for manufacturing the blade 12, and it is possible to easily manufacture the long blade 12 with high shape accuracy. it can. Moreover, handling of the blades 12 becomes easy, and the degree of freedom in design can be increased. Further, since the blades 12 and the spacers 15 are supported by the core 16 made of a rod-shaped member, the louver structure 10 can be reduced in weight as compared with the conventional louver structure supported by a large frame or the like. .
In addition, in the support portion 14, the spacer 15 is made of resin, and a lightweight material such as aluminum or stainless steel is used for the core member 16, whereby the overall weight reduction of the louver structure 10 can be achieved.

  Further, according to the louver structure 10 of the present embodiment, the through hole 15 h is formed along the axis of the cylindrical spacer 15, the first fitting portion 41 is formed on the upper portion of the spacer 15, and the lower portion of the spacer 15 is formed. By forming the second fitting portion 42, when the blade 12 and the spacer 15 are inserted through the core member 16, the first fitting portion 41 of the spacer 15 is fitted to the connecting portion 36, and the connecting portion 38 can be fitted to the second fitting portion 42. In this manner, the connecting portions 36 and 38 are respectively fitted to the first fitting portion 41 and the second fitting portion 42, respectively, and the plurality of blades 12 are connected to each other while maintaining the relative arrangement as designed. Can be arranged accurately and easily at predetermined intervals.

  As described above, according to the louver structure 10 of the present embodiment, the glare on the outdoor side is essentially eliminated, the light weight is easy to manufacture, and the lighting can be performed on the indoor ceiling side.

  The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the present invention described in the claims. It can be changed.

  For example, FIG. 1 illustrates a high-rise building in which a double-skin curtain wall structure is often used as the building B. The louver structure 10 is on the indoor side of the outer wall W of the building B and is located above the living room I. The case where it is attached has been described. However, the louver structure 10 according to the present invention does not require a box (housing) or the like as in the configuration example disclosed in Patent Document 1, and the front and rear of the blades 12 are in the light incident direction. Since it is not blocked by any structure, wind can be taken in addition to daylighting. Therefore, the louver structure 10 is not limited to a high-rise or large-sized building, and can be easily attached to a single-layer building, public facility, or residence, and an energy saving effect is expected when the louver structure 10 is attached.

  It is also possible to replace the upper part of the blind already installed in the building B with the louver structure 10. Thereby, in the living room I, a blind and the louver structure 10 can be functioned independently. For example, when sunlight is strong, a blind is used to block light traveling from the outdoor side to the indoor side in an area below the louver structure 10 of the living room I, while the louver structure 10 takes strong sunlight into the indoor side. The inside can be brightened.

DESCRIPTION OF SYMBOLS 10 Louver structure 12, 12A, 12B Blade | wing 14 Support part 15 Spacer 16 Core material 21 First parabolic curved surface 22 Second parabolic curved surface 23 Third parabolic curved surface 24 First flat surface 28 Mirror surface sheet 31 One parabolic curved surface 32 The other Virtual paraboloid (the other paraboloid)
41 1st fitting part 42 2nd fitting part B Building J2 Virtual optical axis

Claims (9)

A plurality of resin blades arranged at predetermined intervals in one direction along the wall surface of the building;
A support portion for supporting the blade,
The blade is
The upper surface has a first parabolic curved surface that curves convex downward and a second parabolic curved surface that is connected to the outdoor side of the first parabolic curved surface and curves convex downward. And
On the lower surface, an end on the indoor side is connected to an end on the indoor side of the first parabolic curved surface via a connecting portion, and protrudes upward while separating from the first parabolic curved surface toward the outdoor side. A third paraboloid curved in a shape, a first plane connecting the outdoor end of the second paraboloid and the outdoor end of the third paraboloid,
A louver structure, wherein a mirror surface sheet is provided on the first parabolic curved surface, the second parabolic curved surface, and the third parabolic curved surface. The first parabolic curved surface is cut out in the vicinity of the apex of the curved surface of one parabolic curved surface centering on a virtual optical axis that intersects the wall surface from the indoor upper side to the outdoor lower side of the building. Curved surface,
The second paraboloid is focused on the outdoor end of a curved surface in which the vicinity of the apex of the curved surface is cut out of the other paraboloid that faces the one parabolic surface with the virtual optical axis as the center. Another parabolic surface,
The louver structure according to claim 1, wherein the third paraboloid is a paraboloid that is parallel to the other paraboloid.   The specular sheet extends from the vicinity of the indoor side of the outdoor end of the second parabolic curved surface to the upper surface of the connecting portion across the second parabolic curved surface and the first parabolic curved surface, and the lower surface of the connecting portion 3. The louver structure according to claim 1, wherein the louver structure is provided from an end portion on the indoor side of the third parabolic curved surface to a vicinity of the indoor side of the end portion on the outdoor side.   The louver structure according to any one of claims 1 to 3, wherein a specular reflection preventing structure is provided on the first plane.   The said blade | wing is comprised with resin which consists of a mixture of the polymer of an acrylonitrile, a butylacrylate, and a styrene, and the polymer of an acrylonitrile, an ethylene propylene, and a styrene. Louver structure.   The louver structure according to claim 5, wherein the blade is a hollow body made of the resin.   The louver structure according to any one of claims 1 to 6, wherein the specular sheet includes a metal film having a specular reflectance of 80% or more at a center wavelength of incident light. The support part is
A resin spacer disposed between the blades;
The louver structure according to any one of claims 1 to 7, further comprising a core member that penetrates and supports the blade and the spacer. The spacer is formed in a cylindrical shape,
A first fitting portion capable of fitting a connecting portion between the third parabolic curved surface and the first plane is formed at the top,
The louver structure according to claim 8, wherein a second fitting portion capable of fitting a connecting portion between the first parabolic curved surface and the second parabolic curved surface is formed at a lower portion.

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