JP6735639B2 - Louver structure - Google Patents

Description

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

Conventionally, a louver may be provided in a building in order to block rain and the like and selectively take in light and wind into a room. The louver is an arrangement in which a plurality of elongated plates called blades or louvers are arranged in parallel in a frame body with a gap therebetween.

For example, Patent Document 1 discloses a daylighting louver unit that can be arranged on a wall of a building and that introduces external natural light into the interior of the building. This daylighting louver unit is basically a box-shaped casing, a plurality of louvers having a generally triangular cross section accommodated in the casing, and inside the casing, at predetermined positions in the longitudinal direction of each louver (blade), And a louver support member provided to prevent the louver from flexing.

Further, in Patent Document 2, a plurality of slat (blades) 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 are provided. A equipped Mini-Optical Light Shelf (MOLS) daylighting system (louver structure) is disclosed.

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

However, in the daylighting louver unit disclosed in Patent Document 1, since all the surfaces of the louver made of metal and having a profile with a substantially triangular cross section are reflection surfaces, light from the outside of each louver is reflected. There is a problem in that there is light reflected by the surface that faces the outside of the room and that light is directed from this surface to the outside of the room, resulting in glare. In addition, there has been a problem that the weight increases as the size of the daylighting louver unit increases, and it takes time and labor for manufacturing.

Further, in the louver structure disclosed in Patent Document 2, the low shading component of sunlight into the room is blocked by the light shading curve, but the problem of glare when viewed from the outside is not essentially solved. It was difficult.

The present invention provides a louver structure that eliminates glare on the outside of the room, is lightweight and easy to manufacture, and can illuminate the ceiling side of the room.

The louver structure according to claim 1, comprising a plurality of resin blades arranged at predetermined intervals in one direction along a wall surface of a building, and a support portion supporting the blades, wherein the blades are , A first parabolic curved surface curved downward in a convex shape, and a second parabolic curved surface connected to the outdoor side of the first parabolic curved surface and curved downward in a convex shape, Having, 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 through a connecting portion, and is separated from the first parabolic curved surface toward the outdoor side and upwards. A third parabolic curved surface that curves in a convex shape toward the first surface, and a first flat surface that connects the outdoor end of the second parabolic curved surface and the outdoor end of the third parabolic curved surface. However, a mirror 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 sharply compared to metal blades, and the weight of the louver structure is reduced. The blade is easy to handle. In addition, there is a large degree of freedom when designing the shape of the blade, and a manufacturing method such as extrusion molding can be adopted, which facilitates manufacturing of the blade.

Further, in the above-described configuration, the light incident on the louver structure from the upper side of the outdoor side to the lower side of the indoor side is trapped in the space between the first plane and the second parabolic curved surface formed between the blades. To be done. The light trapped in the aforementioned space is reflected by the second parabolic curved surface that is a reflecting surface provided with a mirror sheet, and the first parabolic curved surface and the third parabolic curved surface formed between the blades. Proceed to the space between. The light that has proceeded to the space is reflected by the first parabolic curved surface or the third parabolic curved surface, diffused appropriately, and taken into the ceiling side of the room.
On the other hand, the light incident substantially horizontally to the louver structure from the outdoor side to the indoor side and the light incident to the louver structure from the lower outdoor side to the upper indoor side are not provided with a mirror sheet, that is, It is not absorbed or diffused by the first plane that is a non-reflective surface, and does not become a dazzling light that travels in a predetermined direction. Therefore, no glare can be felt when viewing the louver structure from a substantially horizontal direction on the outdoor side or from the lower side on the indoor side.

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

The louver structure according to claim 2, wherein the first parabolic curved surface is one of the parabolic curved surfaces whose center axis is a virtual optical axis line that intersects with the wall surface from above the interior side of the building toward below the exterior side. Among them, the second parabolic curved surface is a curved surface in which the vicinity of the apex of the curved surface is cut out, and the vicinity of the apex of the curved surface of the other parabolic curved surface facing the one parabolic curved surface around the virtual optical axis is cut. It is another parabolic curved surface having a focus on the outdoor side end of the lacked curved surface, and the third parabolic curved surface is a parabolic curved surface parallel to the other parabolic curved surface.

According to the above configuration, the space on the outdoor side between the blades has the second parabolic curved surface as a part of the outer edge end, and the first connecting portion of the third parabolic curved surface and the first plane is the focal point. Function as a light collection space. On the other hand, the space on the indoor side between the blades is a virtual parabolic surface which is formed by forming the first parabolic curved surface and the third parabolic curved surface as a part of the outer edge ends and connecting the outdoor side end portions of these curved surfaces. It functions as a second condensing space in which the vicinity of the contact point (apex) is cut out and an opening is provided.
Light incident on the louver structure having the above-mentioned curved surface profile from the outdoor side is reflected by the first plane and is more captured in the first light collecting space between the blades. Further, the light reflected by the second parabolic curved surface passes through the opening and enters the second condensing space. Since the virtual optical axis of the second light collecting space is directed to the ceiling side, the light emitted from the second light collecting space is diffused toward the ceiling side while being diffused corresponding to the width of the second light collecting space. It is illuminated.

In the louver structure according to claim 3, the mirror sheet is an upper surface of the connecting portion extending from the vicinity of the indoor side of the outdoor side end of the second parabolic curved surface to the second parabolic curved surface and the first parabolic curved surface. And between the lower surface of the connection portion and the indoor end of the third parabolic curved surface to the vicinity of the indoor end of the outdoor end.

According to the above configuration, since the mirror sheet 28 is arranged as described above, there is no possibility that the end portion of the mirror sheet 28 protrudes from the blade 12, and peeling of the mirror sheet 28 is reliably prevented. It

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

According to the above configuration, when the light incident on the louver structure from the outdoor side is applied to the first plane, it is directed toward the predetermined outdoor direction as compared with the case where the specular antireflection structure is not provided on the first plane. The amount of reflected light is suppressed, and the glare outside the room is surely eliminated.

The louver structure according to claim 5, wherein the vane 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 configuration, by using the above resin, which has low specular reflectance, high diffuse reflectance, excellent thermal characteristics, and easy processing at a wavelength of 550 nm, which is close to the central wavelength of sunlight, Thus, it becomes easier to manufacture the blade, and the louver structure has good daylighting characteristics.
Further, by forming the blade to have a hollow body in cross section as described above, a long blade can be accurately and easily manufactured by using, for example, extrusion molding.

In the louver structure according to claim 7, the specular sheet includes a metal film having a specular reflectance of 80% or more at a central wavelength of incident light.

According to the above configuration, when the light incident on the louver structure from the outdoor side is reflected by the first plane toward the second parabolic curved surface, the first parabolic sheet is used as compared with the case where the mirror surface sheet is not used. The amount of light reflected by the curved surface, the second parabolic curved surface, and the third parabolic curved surface and being collected on the ceiling side in the room is increased, and more favorable 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. Is characterized by.

According to the above 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. Further, according to the above configuration, the spacers stably arrange the blades at a predetermined interval. Further, since the spacer is made of resin, the weight of the spacer and the louver structure can be reduced and the spacer can be easily handled. Similar to the blade, the degree of freedom in designing the spacer is large, and the spacer can be easily manufactured by a method such as extrusion molding.

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

In the above configuration, when the spacer is arranged between the blades, the connecting portion between the third parabolic curved surface of the upper blade with respect to the spacer and the first plane is fitted to the first fitting portion, The connecting portion between the first parabolic curved surface and the second parabolic curved surface of the lower blade with respect to the spacer fits into the second fitting portion. According to such a configuration, the relative positions of the blades are fixed with high accuracy, so 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. It is fixed and good lighting is obtained.

According to the louver structure of the present invention, it is possible to eliminate glare on the outside of the room, to make it lightweight and easy to manufacture, and to illuminate the room on the ceiling side.

1 is a cross-sectional view showing a louver structure of 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, Comprising: It is sectional drawing which saw in the XX line shown in FIG. It is a schematic diagram for explaining the shape of the blade of the louver structure of one embodiment to which the present invention is applied.

Hereinafter, one embodiment of a louver structure to which the present invention is applied (hereinafter, may be 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 length, width, and thickness ratios are not necessarily the same as the actual ones, and can be changed as appropriate.

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

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

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

The louver structure 10 is attached to the interior side of the outer wall W of the building B and above the living room I. By arranging the louver structure 10 in this manner, the light emitted to the outer wall W from above the outdoor 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 a predetermined interval and a support 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 that curves downward in a convex shape. The second parabolic curved surface 22 is a surface that is connected to the outdoor side of the first parabolic curved surface 21 and that curves downward in a convex shape.
The lower surface 12b of the blade 12 is provided with a third parabolic curved surface 23 and a first flat surface 24. The third parabolic curved surface 23 has the indoor end 23p connected to the indoor end 21p of the first parabolic curved surface 21 via the connecting portion 26, and from the first parabolic curved surface 21 toward the outdoor side. It is a surface that is curved in a convex shape upward 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, and 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 reflective surfaces capable of reflecting the light emitted to the outer wall W from above the outdoor side with high reflectance. On the other hand, the first flat surface 24 is a non-reflective surface on which most of the irradiated light is absorbed or diffused.

In FIG. 3, the mirror sheet 28 is shown at a position slightly separated from the respective surfaces of the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23 for the sake of clarity. However, the mirror sheet 28 is in close contact with the respective surfaces of the first parabolic curved surface 21, the second parabolic curved surface 22 and the third parabolic curved surface 23.

In addition, in the present embodiment, the mirror sheet 28 is provided on the upper surface of the connecting portion 35, the first parabolic curved surface 21, and the connecting portion 26 from the front side of the outdoor side end portion 22q of the second parabolic curved surface 22 (in the vicinity of the indoor side). It is provided across. The mirror sheet 28 is provided between the lower surface of the connecting portion 26 and the indoor end 23p of the third parabolic curved surface 23 to the front of the outdoor end 23q (in the vicinity of the indoor side). In other words, the shortest connection between the side surface of the connecting portion 26, the connecting portion 38, the first flat surface 24, the outdoor end 22q of the first parabolic curved surface 21 and the outdoor end 24q of the first flat surface 24. No mirror sheet 28 is provided on the part. By arranging the mirror-like sheet 28 in this way, the end of the mirror-like sheet 28 does not protrude to the outdoor side from the end 22q of the second parabolic curved surface 22 on the outdoor side, and the end of the upper surface and the lower surface of the connecting portion 26 are prevented. They do not protrude to the indoor side, and do not protrude to the outdoor side from the outdoor end 23q of the third parabolic curved surface 23. That is, there is no possibility that the specular sheet 28 will stick out from the blades 12, and peeling of the specular sheet 28 is reliably prevented.

In the above configuration, the second parabolic curved surface 22 has a role of capturing light (such as light (1) shown in FIG. 3) that is incident on the outer wall W from above the outdoor side to below the indoor side, such as sunlight. I carry it. 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 upper inside of the room, and the first flat surface 24. Is light that enters the louver structure 10 from the outdoor side toward the indoor side substantially horizontally (for example, the light (2) shown in FIG. 3) and the louver structure 10 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).

As long as each of the first parabolic curved surface 21, the second parabolic curved surface 22, the third parabolic curved surface 23, and the first plane 24 plays the above-mentioned 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 above-described preferable shape, and other configurations are omitted. It is a thing.

As shown in FIG. 4, the first parabolic curved surface 21 has a virtual optical axis J2, which intersects the virtual axis J1 parallel to the outer wall W of the building B, from the upper side on the indoor side to the lower side on the outdoor side with the central axis. It is a curved surface in which the vicinity of the vertex of the curved surface (dotted line DL1 in FIG. 4) of one of the parabolic curved surfaces 31 is cut out. The third parabolic curved surface 23 is the apex of the curved surface of the other virtual parabolic curved surface (the other parabolic curved surface, the two-dot chain line in FIG. 4) 32 facing the one parabolic curved surface 31 about the virtual optical axis J2. The indoor end 32p of the curved surface, which is cut out in the vicinity of C1 (dotted line DL2 in FIG. 4), is moved in parallel to the lower end 21p of the first parabolic curved surface 21 on the indoor side. The parabolic surface is parallel to the virtual parabolic surface 32. The virtual parabolic curved surface 32 overlaps with the third parabolic curved surface 23 of the blade 12B arranged above the blade 12A 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 above-mentioned second condensing space) whose optical axis is the virtual optical axis J2. There is.

The second parabolic curved surface 22 is a part of another parabolic curved surface 33 (dotted line in FIG. 4) whose focal point is the outdoor end 32q of the virtual parabolic curved surface 32, and the vertex C2 of this parabolic curved surface 33. To the end 21q on the outdoor side of the first parabolic curved surface 21 are notched curved surfaces. That is, the second parabolic curved surface 22 of the blade 12A forms the light collecting space S1 (the above-mentioned first light collecting space) whose optical axis is the virtual optical axis (not shown). The indoor end 24p of the first plane 24 of the blade 12B is the focal point of the parabolic curved surface 33.

The position of the outdoor side end 22q of the second parabolic curved surface 22 is the direction of light that is incident on the outer wall W from above the outdoor side to below the indoor side, such as sunlight, that is, the angle of the incident light with respect to the virtual axis J1. It is set appropriately in consideration of. The outdoor end 24q of the first flat surface 24 is spaced from the outdoor end 22q of the second parabolic curved surface 22 by a dimension corresponding to the minimum processing accuracy of the material of the blade 12, and is a second parabolic curved surface. 22 is connected to the outdoor end 22q.

As can be seen from the preferable shape and design policy of each surface 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 from the outdoor side to the indoor side. It is related and appropriately designed to cause the light incident on it to travel, absorb, or diffuse as desired.

In order to enhance the non-reflectivity of the first plane 24 that plays a role of absorbing or diffusing the light incident on the louver structure 10, the first plane 24 may be provided with a specular antireflection structure (not shown). Good. For example, the first flat surface 24 may be provided with an antireflection film, and the first flat surface 24 may be coated with an antireflection coating. Further, the first flat surface 24 may be provided with a matte decoration, or may be subjected to a texture treatment or the like.

The blade 12 is made of resin. The resin forming the blades 12 is not particularly limited, but the specular reflectance is preferably 10% or less, and more preferably 5% or less at the center wavelength of the light incident on the louver structure 10. Further, the resin forming the blades 12 preferably has a diffuse reflectance of 75% or more, and more preferably 75% or more, at the center wavelength of the light incident on the louver structure 10. 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 is easy to process. Examples thereof include a resin made of a mixture of an acrylate/styrene polymer and an acrylonitrile/ethylene propylene/styrene polymer. For a resin made of a mixture of an acrylonitrile/butyl acrylate/styrene polymer and an acrylonitrile/ethylene propylene/styrene polymer, when the white color is used, the specular reflectance is suppressed to about 3% at a wavelength of 550 nm, and diffusion The reflectance reaches about 80%.

As shown in FIG. 3, the blade 12 is preferably a hollow body made of the above resin. Since the blade 12 is a hollow body as described above, the weight reduction of the blade 12 is promoted. In the case of a hollow body, the thickness of the outer peripheral portion of the blade 12 may be appropriately set in consideration of the processing characteristics of the resin forming the blade 12 and the strength after processing. For example, when a resin made of a mixture of an acrylonitrile/butyl acrylate/styrene polymer and an acrylonitrile/ethylene propylene/styrene polymer is used as the resin forming the blade 12, the blade 12 has a thickness of 2 mm to 3 mm. It can be within the range.

The connecting portion 26 connects the indoor end 21p of the first parabolic curved surface 21 and the indoor end 32p of the third parabolic curved surface 23 to the processing characteristics of the resin forming the blade 12 and the strength after processing. It is for connecting with a suitable thickness in consideration of.

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

The specular sheet 28 is not particularly limited, but preferably has a specular reflectance of 80% or more, and more preferably 83% or more in the wavelength band of light incident on the louver structure 10. Further, the specular sheet 28 preferably has a diffuse reflectance of 5% or less, 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 reflectance of 80% or more at the center wavelength of the light incident on the louver structure 10, and includes a metal film having such specular reflectance. preferable. Further, the mirror sheet 28 preferably has a breaking strength of 20 MPa or more. Since the specular sheet 28 has such excellent elongation characteristics, the surfaces on which the specular 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, are not provided. When provided on a curved surface that is convexly curved with respect to the direction of the opposite surface, the specular sheet 28 adheres well to these curved surfaces without wrinkling or sagging, and the optical characteristics of the louver structure 10 are obtained. Is stable.

As a suitable mirror sheet 28, for example, a glitter film including an aluminum film or the like can be mentioned. As such a suitable glitter film, a specular reflectance is low at a wavelength of 550 nm close to the central wavelength of sunlight, a diffuse reflectance is high, a lightweight property and a thermal property are excellent, and it is easy to process. DIARAC (registered trademark, distributor: Nippon Ply Co., Ltd.) and "JBRIGHT" series (distributor: Nippon Ply Co., Ltd.), which are films for specular reflection, can be mentioned. For example, the glitter film used in the present embodiment is, for example, a base film layer of ABS (copolymer of acrylonitrile, butadiene, styrene) of 150 μm, an adhesive layer of 12 μm, and a metal glitter layer of aluminum, for example, from the bottom surface side. And a weather resistant PET (polyethylene terephthalate), a coat layer, and a process PET. In the glitter film used in this embodiment, the specular reflectance reaches about 86.27% (the specular reflectance is 99.99%) at a wavelength of 550 nm, and the diffuse reflectance is suppressed to about 0.01%. Further, the glitter film used in the present embodiment has a high specular reflectance of 82% or more (specular reflectance of 99.90% or more) with respect to light having a wavelength of 400 nm to 700 nm which corresponds to a visible light region. The metal bright layer may be aluminum, copper, nickel, chromium, titanium, stainless steel, cobalt, molybdenum, zirconium, tungsten, palladium, indium, tin, gold, or silver.

The method for providing the specular 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, but the specular sheet 28 has heat resistance. Alternatively, when it has excellent thermal characteristics, it can be manufactured by extrusion molding in parallel with the extrusion molding of the blade 12. For example, the mirror surface sheet 28 can be easily manufactured by extrusion molding using a mold having a flow path similar to the blade 12 and the mirror surface sheet 28, and can be provided on the predetermined curved surface. The mirror-finished sheet 28 may be attached to the first parabolic curved surface 21, the second parabolic curved surface 22, and the third parabolic curved surface 23 of the blade 12 after molding by a known attaching 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 and 12 adjacent to each other in the D1 direction, the plurality of blades 12 and the plurality of spacers. 15, and a core material 16 that penetrates and supports 15.

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

Specifically, the spacer 15 has a cylindrical shaft portion 15A on the inner side in the radial direction about the axis, that is, the virtual axis J1, and 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 in the upper portion of the space holding portion 15B in a state of being 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 by cutting the lower part of the cylinder into the same shape as the connecting part 38 and the first parabolic curved surface 21 and the second parabolic curved surface 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 outside of the first parabolic curved surface 21 of the blade 12, the lower portion of the shaft portion 15A of the spacer 15 is placed inside the blade 12. A through hole 21h that can penetrate is formed. On the other hand, outside the third parabolic curved surface 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 15A of the spacer 15 penetrates into the blade 12. A possible through hole 23h is formed. Due to such a fitting state and a penetrating state of the members, the relative positions of the adjacent blades 12 are fixed with high accuracy as designed. For example, the width dimension of the blade 12 in the D2 direction is 60.96 mm, and the linear distance between the outdoor 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, the linear distance between the connecting portion 38 of the upper blade 12 and the connecting portion 36 of the lower blade 12 of the blades 12, 12 adjacent to each other in the D1 direction is preferably maintained at 7.53 mm. In this way, the relative positions of the blades 12, 12, which require accuracy, can be fixed well.

The resin constituting the spacer 15 is not particularly limited, but since the spacer 15 is arranged in the passage region of the light incident on the louver structure 10, it is transparent to the wavelength band of the light incident on the louver structure 10. A lightweight one is preferable. Examples of such a resin include a mixture of acrylic or a copolymer of methyl acrylate and methyl methacrylate 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 composed of a rod-shaped member. The material of the core material 16 is not particularly limited, but it is preferable that the core material 16 has a strength capable of supporting the plurality of blades 12 and the plurality of spacers 15 and is lightweight. 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, light that is incident substantially horizontally to the louver structure 10 from the outdoor side to the indoor side and the louver structure 10 from the lower outdoor side to the upper indoor side is formed. The incident light can be absorbed or diffused by the first flat surface 24 that is a non-reflective surface on which the specular sheet 28 is not provided, and the generation of dazzling light that proceeds in a predetermined direction can be prevented. Therefore, it is possible to essentially eliminate the glare when the louver structure 10 is viewed from the substantially horizontal direction on the outdoor side or from the lower side on the indoor side.

Further, in the louver structure 10 of the present embodiment, by providing the specular antireflection structure on the first flat surface 24, the light that is incident substantially horizontally to the louver structure 10 from the outdoor side to the indoor side and the outdoor downward direction. It is possible to reliably suppress specular reflection of light that is incident on the louver structure 10 from above toward the inside of the room, and to further suppress glare when the louver structure 10 is viewed from a substantially horizontal direction outside the room or below the inside of the room. ..

On the other hand, according to the louver structure 10 of the present embodiment, the light incident on the louver structure 10 from the upper side of the outdoor side to the lower side of the indoor side receives the first blade of the upper blade 12 of the blades 12, 12 adjacent in the D1 direction. It can be trapped in the space between the plane 24 and the second parabolic surface 22 of the lower vane 12. The light trapped in the above-mentioned space is reflected by the second parabolic curved surface 22 which is a reflection surface provided with the specular sheet 28 on the lower blade 12, and the specular sheet 28 is provided on the lower blade 12. It advances to the space between the first parabolic curved surface 21 which has become a reflecting surface and the third parabolic curved surface 23 which is provided with the mirror sheet 28 on the upper blade 12 and has become a reflecting surface. The light that has proceeded to the space is reflected by the first parabolic curved surface 21 and the third parabolic curved surface 23, diffuses appropriately, and is emitted toward the ceiling side of the living room I. By advancing and emitting light in this manner, the light that has entered the louver structure 10 from the upper side of the outdoor side to the lower side of the indoor side can be favorably collected to the ceiling side of the living room I.

Further, the first parabolic curved surface 21 is a curved surface in which the vicinity of the vertex C1 of the curved surface is cut out of the 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 one. The 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 notched in the vicinity of the vertex C2 of the curved surface of the other virtual parabolic curved surface 32 centered on the virtual optical axis J2. Of the blades 12, 12 adjacent to each other in the D1 direction, the first flat surface 24 of the upper blade 12 and the first blade 24 of the lower blade 12 of the blades 12 and 12 adjacent to each other in the D1 direction are made to be a part of another parabolic curved surface 33 whose focal point is the end portion 32q. The space between the second parabolic curved surface 22 is made to function as the condensing space S1, and the 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 the configuration in which the condensing spaces S1 and S2 are properly connected in this way, the light incident on the louver structure 10 from the upper side of the outdoor side to the lower side of the indoor side is efficiently collected on the ceiling side of the living room I. be able to.

Further, the mirror sheet 28 is provided from the front side of the outdoor side end 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 is formed. By providing from the indoor end 23p of the third parabolic curved surface 23 to the front of the outdoor end 23q, the end of the specular sheet 28 is prevented from protruding from the blades 12 and the specular sheet 28 is reliably peeled off. Can be prevented. Thereby, the louver structure 10 can be favorably used for a long period of time.

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

Further, according to the louver structure 10 of the present embodiment, since the blades 12 are made of resin, even when the blades 12 are elongated to attach the louver structure 10 to a large building B such as a high-rise building, for example. As compared with the conventionally proposed louver structure, which is made of metal, the blade 12 can be prevented from being rapidly increased in weight and the blade 12 can be made lighter. By making the blade 12 a hollow body, it is possible to further reduce the weight, and it becomes easy to adopt extrusion molding as a manufacturing method of the blade 12, and it is possible to easily manufacture the long blade 12 with high shape accuracy. it can. Further, the blade 12 can be easily handled, and the degree of freedom in design can be increased. Further, since the blades 12 and the spacers 15 are supported by the core member 16 made of a rod-shaped member, the weight of the louver structure 10 can be reduced 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 the core material 16 is made of a lightweight material such as aluminum or stainless steel, whereby the overall weight of the louver structure 10 can be reduced.

Further, according to the louver structure 10 of the present embodiment, the through hole 15h 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 inserting the blade 12 and the spacer 15 into the core material 16, the first fitting portion 41 of the spacer 15 is fitted to the connecting portion 36, and the connecting portion is formed. 38 can be fitted to the second fitting portion 42. In this way, by simply fitting the connecting portions 36 and 38 to the first fitting portion 41 and the second fitting portion 42, respectively, the plurality of blades 12 are held in a state of maintaining the relative arrangement as designed. Can be accurately and easily arranged at predetermined intervals.

As described above, according to the louver structure 10 of the present embodiment, the glare on the outside of the room is essentially eliminated, the weight is low, the manufacturing is easy, and the interior side of the ceiling can be illuminated.

Although the preferred embodiments of the present invention have been described above in detail, the present invention is not limited to the specific embodiments, and various modifications are possible within the scope of the gist 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 adopted as the building B, and the louver structure 10 is located inside the outer wall W of the building B and 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 body (housing) or the like as in the configuration example disclosed in Patent Document 1, and the front and rear of the blade 12 in the light incident direction are Since it is not blocked by any structure, wind can be taken in addition to daylight. Therefore, the louver structure 10 is not limited to a high-rise building or a large-scale building, and can be easily attached to a single-layer building, a public facility, or a residence, and an energy saving effect when attached is expected.

It is also possible to replace the upper part of the existing blind in the building B with the louver structure 10. As a result, in the room I, the blind and the louver structure 10 can function independently. For example, when the sunlight is strong, the blinds are used to block the light that travels from the outside to the inside in the area below the louver structure 10 of the living room I, while the louver structure 10 introduces strong sunlight into the inside of the living room I. You can brighten the inside.

10 louver structure 12, 12A, 12B blade 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 sheet 31 one parabolic curved surface 32 the other Virtual parabolic surface (other parabolic surface)
41 First Fitting Part 42 Second Fitting Part B Building J2 Virtual Optical Axis

Claims (9)

A plurality of resin blades arranged at a predetermined interval in one direction along the wall surface of the building,
A support portion that supports the blade,
The blades are
The upper surface has a first parabolic curved surface that curves downward in a convex shape and a second parabolic curved surface that is connected to the outdoor side of the first parabolic curved surface and that curves downward in a convex shape. Then
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 flat parabolic curved surface, a first plane connecting the outdoor end of the second parabolic curved surface and the outdoor end of the third parabolic curved surface,
A louver structure, wherein mirror sheets are 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 near the apex of the curved surface of one of the parabolic curved surfaces whose center axis is a virtual optical axis intersecting the wall surface from above the indoor side of the building to below the outdoor side. Is a curved surface,
The second parabolic curved surface has a focus on the outdoor end of the curved surface of the other parabolic curved surface that opposes the one parabolic curved surface with the virtual optical axis as the center, and is cut out near the apex of the curved surface. Another parabolic surface,
The louver structure according to claim 1, wherein the third parabolic curved surface is a parabolic curved surface parallel to the other parabolic curved surface. The mirror surface sheet, from 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. The louver structure according to claim 1 or 2, wherein the louver structure is provided between the indoor end of the third parabolic curved surface and the vicinity of the indoor end of the outdoor end. The louver structure according to any one of claims 1 to 3, wherein a specular antireflection structure is provided on the first plane. The said blade is comprised with the resin which consists of a mixture of the polymer of acrylonitrile butyl acrylate styrene, and the polymer of acrylonitrile ethylene propylene pyrene 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 portion 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 tubular shape,
A first fitting portion capable of fitting a connecting portion between the third parabolic curved surface and the first flat surface is formed on an upper portion,
The louver structure according to claim 8, wherein a second fitting portion capable of fitting a connecting portion of the first parabolic curved surface and the second parabolic curved surface is formed in a lower portion.

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