JP2017097166A - Outdoor optical panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor optical panel that is easy to install and highly versatile.SOLUTION: An outdoor optical panel 1 is to be installed outdoor and is light-transmissive. The outdoor optical panel 1 comprises a light transmissive base material 2, and a light diffusive portion 3 that is formed integrally with the base material 2 to receive incident light on an upper surface of the base material 2 and output diffused light from a lower surface 22. The light diffusive portion 3 comprises a lens 31 that radially diffuses the incident light in planar view of the base material 2.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an outdoor optical panel.

  For example, a roof material installed outdoors such as a terrace uses a light-transmitting plate material from the viewpoint of ensuring indoor brightness (see, for example, Patent Document 1).

  Patent Document 1 discloses a light guide plate that includes a transparent resin plate and a prism that includes a plurality of protrusions formed on the surface of the transparent resin plate, and the prism is positioned so as to be positioned vertically downward. Is disclosed. This light guide plate changes the direction of sunlight incident from the surface opposite to the prism at the slope of the prism and guides the sunlight into the room.

  However, in the light guide plate described in Patent Document 1, the prism has anisotropy because it is composed of triangular prism-shaped protrusions. That is, the traveling direction of sunlight whose direction is changed on the slope of the prism is determined. For this reason, if the installation direction is wrong, light cannot be guided indoors.

JP 2010-085905 A

  An object of the present invention is to provide an outdoor optical panel that is easy to install and excellent in versatility.

Such an object is achieved by the present inventions (1) to (9) below.
(1) An outdoor optical panel that is installed outdoors and has optical transparency,
A substrate having optical transparency;
A light diffusing portion that is integrally formed with the base material and is incident on one surface of the base material and diffuses the incident light from the other surface side of the base material;
The outdoor optical panel, wherein the light diffusing unit diffuses the incident light radially in a plan view of the base material.

  (2) The outdoor optical panel according to (1), wherein the light diffusing portion is configured by a convex portion that is formed to protrude from at least one surface of the base material.

  (3) The outdoor optical panel according to (2), wherein the convex portion is a hemispherical lens.

  (4) The outdoor optical panel according to (2) or (3), wherein the light diffusing portion has a diameter of 0.01 mm to 3.0 mm.

  (5) The above-mentioned convex part has the 1st part which controls the outgoing light which radiates from the convex part, and the 2nd part which emits the outgoing light more than the 1st part. The outdoor optical panel according to any one of (2) to (4).

(6) A large number of the convex portions are provided,
Each said convex part is an outdoor optical panel in any one of said (1) thru | or (5) arrange | positioned in the grid | lattice form or zigzag form in planar view of the said base material.

  (7) The outdoor optical panel according to (6), wherein the convex portions are arranged at equal intervals.

  (8) The outdoor optical panel according to any one of (2) to (7), wherein the outdoor optical panel is installed so that the surface on the convex portion side faces the lower side in the vertical direction.

  (9) The outdoor optical panel according to any one of (1) to (8), wherein the outdoor optical panel is installed and used in an inclined state of 3 ° or more and 30 ° or less with respect to the horizontal direction.

  According to the present invention, an outdoor optical panel that is easy to install and excellent in versatility can be obtained.

FIG. 1 is a perspective view showing an outdoor optical panel (first embodiment) of the present invention. FIG. 2 is a cross-sectional view showing the outdoor optical panel shown in FIG. 3 is a view as seen from the direction of arrow A in FIG. FIG. 4 is an enlarged side view showing a lens part (light diffusion part) provided in the outdoor optical panel shown in FIG. 5A and 5B are perspective views showing the outdoor optical panel shown in FIG. FIG. 6 is a cross-sectional view showing an outdoor optical panel (second embodiment) of the present invention. 7 is a view seen from the direction of arrow B in FIG. FIG. 8 is a cross-sectional view showing an outdoor optical panel (third embodiment) of the present invention. 9 (a) and 9 (b) are perspective views showing a conventional outdoor optical panel.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an outdoor optical panel of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

<First Embodiment>
FIG. 1 is a perspective view showing an outdoor optical panel (first embodiment) of the present invention. FIG. 2 is a cross-sectional view showing the outdoor optical panel shown in FIG. 3 is a view as seen from the direction of arrow A in FIG. FIG. 4 is an enlarged side view showing a lens part (light diffusion part) provided in the outdoor optical panel shown in FIG. 5A and 5B are perspective views showing the outdoor optical panel shown in FIG. 9 (a) and 9 (b) are perspective views showing a conventional outdoor optical panel.

  1, 2, 4, 5, and 9 (the same applies to FIGS. 6 and 8), the upper side is referred to as “upper” or “upper”, and the lower side is referred to as “lower” or “lower”. Also say. 2 and 4 (the same applies to FIGS. 6 and 8), the outdoor optical panel is illustrated along the horizontal direction, but actually, as shown in FIG. 1, it is inclined with respect to the horizontal direction. doing.

  An outdoor optical panel 1 shown in FIG. 1 is installed outdoors as a roofing material such as a terrace, and can block rain. Moreover, the outdoor optical panel 1 can transmit sunlight, and can guide sunlight indoors. Thereby, the indoor brightness can be ensured while blocking rain. Hereinafter, the configuration of the outdoor optical panel 1 will be described in detail.

As shown in FIG. 2, the outdoor optical panel 1 includes a base material 2 and a light diffusion portion 3.
The substrate 2 has a plate shape and is made of a light transmissive material having light transmissive properties. The light transmissive material is not particularly limited. For example, a resin material such as polycarbonate resin, polyester resin, methacrylic resin, styrene resin, polyvinyl chloride resin, polyolefin resin, polyamide resin, Various glass materials can be used. Of these materials, polycarbonate resins are preferred from the viewpoints of excellent transparency, heat resistance, impact resistance, and low cost.

  The polycarbonate resin is a linear polymer containing a carbonate ester bond in the main chain. For example, various dihydroxy diaryl compounds and phosgene are reacted by a phosgene method, or a dihydroxy diaryl compound and a carbonate ester such as diphenyl carbonate Is a polymer that can be obtained by reacting with a transesterification method. Specifically, a polycarbonate resin produced from 2,2-bis (4-hydroxyphenyl) propane (bisphenol A) can be mentioned.

  Examples of the polyester resin include polyethylene terephthalate, polybutylene terephthalate, polyacrylate, polyether ether ketone, and the like.

  Examples of the methacrylic resin include polymers made of various esters of methacrylic acid or copolymers with other monomers. Specifically, homopolymers of various methacrylic esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, etc., and these methacrylic esters and various acrylic esters, acrylic acid, styrene, α-methylstyrene, etc. And the like.

  Examples of the styrene resin include a polymer made of a styrene monomer or a copolymer using a monomer copolymerizable with the styrene monomer. Examples of the styrenic monomer include styrene, α-methylstyrene, styrene derivatives in which a hydrogen atom of a benzene nucleus is substituted with a halogen atom or an alkyl group having 1 to 2 carbon atoms, specifically, styrene, o -Chlorstyrene, p-chlorostyrene, 2,4-dimethylstyrene, t-butylstyrene and the like. Examples of the copolymerizable monomer include acrylonitrile monomers such as (meth) acrylonitrile, α-chloroacrylonitrile, vinylidene cyanide, (meth) acrylic acid, methyl (meth) acrylate, (meth) (Meth) acrylic acid such as ethyl acrylate, butyl (meth) acrylate, glycidyl (meth) acrylate, (meth) acrylic acid-2-ethylhexylbutyl, (meth) acrylic acid-β-hydroxyethyl, and these Various esters or vinyl acetate, vinyl chloride, vinylidene chloride, vinyl pyrrolidone, (meth) acrylamide, maleic anhydride, itaconic anhydride, maleimide and the like can be mentioned.

  Examples of the polyvinyl chloride resin include a vinyl chloride homopolymer, a vinyl chloride copolymer obtained by copolymerizing a small amount of a comonomer, a graft copolymer, and the like. Polymer blends of these with vinylidene chloride resin, ethylene / vinyl acetate copolymer, chlorinated polyethylene and the like may be used.

  Examples of the polyolefin resin include a homopolymer of α-olefin or a copolymer of α-olefin and another copolymerizable monomer. For example, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-4-methyl-1-pentene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, etc. It is done. Among these, low density polyethylene having a density of 0.910 to 0.935, ethylene-α-olefin copolymer, and ethylene-vinyl acetate copolymer having a vinyl acetate content of 30% by weight or less are excellent in transparency and weather resistance. ing. Among them, an ethylene-vinyl acetate copolymer having a vinyl acetate content of 5 wt% to 30 wt% is particularly excellent in transparency, flexibility and weather resistance.

  Examples of the polyamide-based resin include nylon-6, nylon-66, nylon-12, nylon-46, and the like.

  Moreover, the base material 2 may contain 1 type, or 2 or more types in the substance which absorbs near infrared rays, for example, sulfur, a sulfur type compound, a copper type compound, and another near-infrared absorption substance.

  Moreover, the color of the base material 2 may be colorless or any color such as red, blue, and yellow.

  These colors can be selected by adding a dye to the resin material constituting the substrate 2. Examples of the dye include acid dyes, direct dyes, reactive dyes, and basic dyes, and one or two or more selected from these can be used in combination.

  Specific examples of the dye include C.I. I. Acid Yellow 17, 23, 42, 44, 79, 142, C.I. I. Acid Red 52, 80, 82, 249, 254, 289, C.I. I. Acid Blue 9, 45, 249, C.I. I. Acid Black 1, 2, 24, 94, C.I. I. Food Black 1, 2, C.I. I. Direct Yellow 1,12,24,33,50,55,58,86,132,142,144,173, C.I. I. Direct Red 1,4,9,80,81,225,227, C.I. I. Direct Blue 1, 2, 15, 71, 86, 87, 98, 165, 199, 202, C.I. I. Direct Black 19, 38, 51, 71, 154, 168, 171, 195, C.I. I. Reactive Red 14, 32, 55, 79, 249, C.I. I. Reactive black 3, 4, 35 etc. are mentioned.

  In addition, it is preferable that a polarizing film is disposed on the upper surface 21 of the substrate 2. Thereby, the sunlight L passing through the outdoor optical panel 1 is polarized.

  This polarizing film is, for example, a polymer film composed of polyvinyl alcohol (PVA), partially formalized polyvinyl alcohol, polyethylene vinyl alcohol, polyvinyl butyral, polycarbonate, ethylene-vinyl acetate copolymer partially saponified product, etc. And dichroic substances such as dichroic dyes and the like, uniaxially stretched, and polyethylene oriented films such as polyvinyl alcohol dehydrated products and polyvinyl chloride dehydrochlorinated products.

  Among these, the polarizing film is preferably a film obtained by adsorbing or dyeing iodine or a dichroic dye on a polymer film containing polyvinyl alcohol (PVA) as a main material and uniaxially stretching.

  Polyvinyl alcohol (PVA) is a material having excellent transparency, heat resistance, affinity with iodine or dichroic dye as a dyeing agent, and orientation during stretching. Therefore, a polarizing film mainly composed of PVA has excellent heat resistance and excellent polarizing ability.

  Examples of the dichroic dye include chloratin fast red, congo red, brilliant blue 6B, benzoperpurine, chlorazole black BH, direct blue 2B, diamine green, chrysophenone, sirius yellow, direct first red, and acid black. Etc.

  Moreover, the base material 2 may contain additives, such as a heat stabilizer, an infrared absorber, an ultraviolet absorber, a fluorescent whitening agent, a mold release agent, and an antistatic agent. In addition, a film containing these additives may be attached to the upper surface of the substrate 2.

  The thickness t of the base material 2 is not particularly limited, but is preferably 1.0 mm or more and 15.0 mm or less, and more preferably 1.5 mm or more and 8.0 mm or less. . Thereby, although depending on the constituent material of the base material 2, sufficient mechanical strength can be obtained and weight reduction can be achieved.

Next, the light diffusion unit 3 will be described.
As shown in FIGS. 2, 3, and 4, the light diffusing unit 3 includes a large number of lens units 31. The lens units 31 are arranged at regular intervals (equal pitch) in a lattice shape. Since each lens unit 31 has the same configuration, one lens unit 31 will be representatively described.

  The lens portion 31 is formed of a hemispherical convex portion that protrudes downward from the lower surface 22 of the substrate 2. Thereby, the light which permeate | transmits the lens part 31 can be converged on the focus F. FIG.

  Next, an optical path of sunlight L that passes through the outdoor optical panel 1 will be described with reference to FIG. In FIG. 4, the right side is the west side and the left side is the east side.

  As shown in FIG. 4, the sunlight L is incident on the outdoor optical panel 1 from the east side. And the sunlight L which permeate | transmitted the base material 2 and the lens part 31 in order converges at the focus F of the west rather than the lens part 31. FIG. The sunlight L that has converged at the focal point F diffuses below the focal point F.

At this time, the angle θ ₁ formed by a part of the diffused sunlight L (hereinafter also referred to as “sunlight L ′ (emitted light)”) with the horizontal direction is the level of the sunlight L before entering the lens unit 31. It is smaller than the angle θ ₂ formed with the direction. Thereby, sunlight L 'will go to the back side of room R rather than sunlight L which does not pass lens part 31. Therefore, according to the outdoor optical panel 1, the sunlight L ′ can be incident into the room R even if it is installed near the window. As a result, it is possible to block rain and to prevent or suppress a decrease in room illuminance due to the installation of the outdoor optical panel 1.

  Here, FIGS. 9A and 9B are diagrams showing a conventional outdoor optical panel 100 ′. The outdoor optical panel 100 ′ has a rectangular shape in plan view. The outdoor optical panel 100 ′ has a large number of light reflecting surfaces 103 ′ extending along the long side 101 ′. According to the outdoor optical panel 100 ′, sunlight L ′ can be preferentially guided to the right side or the left side in FIG.

  However, it is difficult to preferentially guide sunlight L ′ to the rear side and the front side of the sheet in FIG. Therefore, the outdoor optical panel 100 ′ is installed and used so that one of the two long sides 101 ′ is located on the room R side. That is, as shown in FIG. 9B, in the outdoor optical panel 100 ′, when the two short sides 102 ′ are positioned on the room R side, the sunlight L ′ is shown in FIG. 9B. It is preferentially guided to the front side and the back side.

  As a result, it is difficult to ensure sufficient illuminance in the room R. As described above, the conventional outdoor optical panel 100 ′ is limited in the installation direction, and it is difficult to say that it is excellent in versatility.

  On the other hand, in the outdoor optical panel 1 of the present invention, since the sunlight L is diffused radially, it can be installed regardless of the direction. That is, when the outdoor optical panel 1 has a rectangular shape in plan view, as shown in FIG. 5A, even if it is installed so that the long side 11 is located on the room R side, FIG. As shown in FIG. 2, even if the short side 12 is installed on the room R side, the sunlight L ′ can be guided to the room R side. Therefore, the outdoor optical panel 1 is easy to install and excellent in versatility.

  In such an outdoor optical panel 1, the diameter φD of the lens portion 31 is preferably 0.01 mm or greater and 4.0 mm or less, and more preferably 0.05 mm or greater and 2.0 mm or less. Thereby, while being able to manufacture the lens part 31 easily, the light-diffusion effect of the lens part 31 can be heightened.

  If the diameter φD of the lens portion 31 is too small, for example, it will be difficult to manufacture a mold when molding the outdoor optical panel 1. On the other hand, if the diameter φD of the lens unit 31 is too large, the focal point F becomes relatively far from the lens unit 31 and there is a possibility that sufficient light diffusibility cannot be obtained.

  Further, the protruding height h of the lens portion 31 (the separation distance between the lower surface 22 of the substrate 2 and the top portion 311 of the lens portion 31) is preferably 0.005 mm or more and 5.0 mm or less, and more preferably 0.025 mm or more. More preferably, it is 2.5 mm or less. In addition, the protruding height h of the lens portion 31 is preferably 0.5 times or more and 1.25 times or less with respect to the diameter φD of the lens portion 31. Further, it is preferably 1.0 times or more and 2.5 times or less with respect to the radius r of the lens portion 31. Thereby, the light-diffusion effect of a lens part can be improved.

  Moreover, the lens part 31 is arrange | positioned at the grid | lattice form in planar view of the base material 2, as mentioned above. Further, in the columns and rows of the lens portions 31, the lens portions 31 adjacent to each other are equally spaced (equal pitch). According to such an arrangement, the sunlight L ′ can be uniformly guided to the room R side evenly regardless of the orientation of the outdoor optical panel 1.

  Further, as shown in FIG. 1, the outdoor optical panel 1 is preferably installed with an inclination of 3 ° or more and 30 ° or less with respect to the horizontal direction, and is installed with an inclination of 7 ° or more and 15 ° or less. More preferably. Thereby, the light totally reflected on the upper surface 21 of the base material 2 in the sunlight L can be reduced regardless of the season, that is, regardless of the inclination angle of the sunlight L with respect to the vertical direction. Therefore, more sunlight L can be made incident on the lens unit 31. As a result, the illuminance of the room R can be further increased.

  In the outdoor optical panel 1, the lens unit 31 is positioned on the lower side in the vertical direction, and the upper surface 21 of the substrate 2 is a flat surface. Thereby, compared with the case where the lens part 31 is formed in the upper surface 21 of the base material 2, the sunlight L which injects into the outdoor optical panel 1 can be increased. As a result, the illuminance of the room R can be further increased.

  The lens portion 31 is made of a light transmissive material having light transmissive properties. As this light transmissive material, the same material as that of the substrate 2 can be used and is the same.

  By using the same resin material as the base material 2 as the lens part 31, the lens part 31 and the base material 2 can be molded by supplying the resin material into the same mold. Thereby, the lens part 31 and the base material 2 can be formed integrally, and compared with the structure which arrange | positions the lens part 31 in the base material 2 as another body, the lens part 31 can be formed with sufficient precision.

  Further, in the plan view of the outdoor optical panel 1, the occupation ratio of the light diffusion portion 3 in the base material 2, that is, the ratio of the area occupied by the lens portion 31 in the base material 2 in the plan view of the base material 2, is It is preferably 10% or more and 99% or less, and more preferably 20% or more and 80% or less. Thereby, the light which passes the lens part 31 among the sunlight L which injected into the upper surface 21 of the base material 2 can be increased. Therefore, the illuminance of the room R can be effectively secured.

Second Embodiment
FIG. 6 is a cross-sectional view showing an outdoor optical panel (second embodiment) of the present invention. 7 is a view seen from the direction of arrow B in FIG.

Hereinafter, the second embodiment of the outdoor optical panel of the present invention will be described with reference to these drawings, but the description will focus on the differences from the above-described embodiment, and the description of the same matters will be omitted.
This embodiment is the same as the first embodiment except that the shape of the convex portion is different.

  As shown in FIGS. 6 and 7, in the outdoor optical panel 1 </ b> A, the lens unit 31 has a half-spherical shape. The lens unit 31 has a spherical surface (second portion) 312 of the lens unit 31 on the room R side, and a vertical surface (first portion) 313 on the opposite side to the room R. .

  In such an outdoor optical panel 1 </ b> A, as shown in FIG. 8, the incident sunlight L is diffused radially in a plan view of the substrate 2. Further, the inclination angle of the sunlight L 'toward the room R side with respect to the horizontal direction is smaller than the inclination angle of the sunlight L' toward the opposite side of the room R with respect to the horizontal direction. Thereby, the sunlight L can be guided preferentially (many) toward the room R side. Therefore, sufficient illuminance of the room R can be ensured.

<Third Embodiment>
FIG. 8 is a cross-sectional view showing an outdoor optical panel (third embodiment) of the present invention.

Hereinafter, a third embodiment of the outdoor optical panel of the present invention will be described with reference to this figure, but the description will focus on differences from the above-described embodiment, and the description of the same matters will be omitted.
The present embodiment is the same as the first embodiment except that the configuration of the convex portions is different.

  As shown in FIG. 8, in the outdoor optical panel 1 </ b> B, the lens unit 31 is embedded in the base material 2.

  The lens unit 31 has a spherical shape and is configured by a so-called ball lens. The lens unit 31 includes a lens unit 31 </ b> A whose surface is not exposed from the base material 2 and a lens unit 31 </ b> B whose part is exposed from the base material 2.

  In such an outdoor optical panel 1B, the sunlight L incident on the upper surface 21 of the base material 2 passes through the lens portion 31B and the lens portion 31A, is diffused, and the sunlight L enters the room R side. . Since the lens unit 31A and the lens unit 31B are configured by ball lenses, the focal point F is located on the surface of the lens unit 31A and the lens unit 31B or in the vicinity thereof. As a result, the sunlight L is diffused on the base material 2 side as compared with the first embodiment, and the illuminance of the room R can be further increased.

  The outdoor optical panel 1B is obtained, for example, by mixing the lens portion 31 in the liquid substrate 2 and then curing the liquid substrate 2.

  As described above, the illustrated embodiment of the outdoor optical panel of the present invention has been described. However, the present invention is not limited to this, and each part constituting the outdoor optical panel is an arbitrary one that can exhibit the same function. It can be replaced with the configuration of Moreover, arbitrary components may be added.

  Moreover, in each said embodiment, although each convex part is arrange | positioned at the grid | lattice form, it is not limited to this in this invention, For example, you may arrange | position in zigzag arrangement | positioning or radial form.

  Moreover, in each said embodiment, although each convex part arrange | positions adjacent convex parts mutually at equal intervals (equal pitch) in a row and a column, in this invention, it is not limited to this, For example, one side The separation distance may gradually increase toward the side.

  In this case, by installing the outdoor optical panel in such a direction that the distance between the convex portions increases from the room side to the outside, even if the convex portion is located on the far side from the room, the sunlight is applied to the room side. Can be strengthened.

  In each of the above embodiments, the case where the outdoor optical panel is installed on the terrace has been described. However, the present invention is not limited to this, and may be used as, for example, a roof of a garage or a partition of an apartment veranda. Can do.

  In the third embodiment, the lens unit includes the lens unit exposed from the base material and the lens unit not exposed from the base material. However, in the present invention, the lens unit is not limited thereto. The lens part exposed from the base material may be omitted, and the lens part not exposed from the base material may be omitted.

DESCRIPTION OF SYMBOLS 1 Outdoor optical panel 1A Outdoor optical panel 1B Outdoor optical panel 11 Long side 12 Short side 2 Base material 3 Light diffusion part 31 Lens part 31A Lens part 31B Lens part 21 Upper surface 22 Lower surface 100 'Outdoor optical panel 101' Long Side 102 ′ Short side 103 ′ Light reflecting surface 311 Top portion 312 Spherical surface 313 Vertical surface F Focus L Sunlight L ′ Sunlight R Room h Projection height θ1 Angle θ2 Angle φD Diameter t Thickness

Claims (9)

An outdoor optical panel that is installed outdoors and has optical transparency,
A substrate having optical transparency;
A light diffusing portion that is integrally formed with the base material and is incident on one surface of the base material and diffuses the incident light from the other surface side of the base material;
The outdoor optical panel, wherein the light diffusing unit diffuses the incident light radially in a plan view of the base material.   The outdoor optical panel according to claim 1, wherein the light diffusing portion is configured by a convex portion that is formed to protrude from at least one surface of the base material.   The outdoor optical panel according to claim 2, wherein the convex portion is a hemispherical lens.   The outdoor optical panel according to claim 2 or 3, wherein a diameter of the light diffusion portion is 0.01 mm or more and 3.0 mm or less.   The said convex part has the 1st part which suppresses the emitted light radiate | emitted from this convex part, and the 2nd part which radiate | emits the said emitted light more than the said 1st part. 5. The outdoor optical panel according to any one of 4 above. A large number of the convex portions are provided,
6. The outdoor optical panel according to claim 1, wherein the convex portions are arranged in a lattice shape or a zigzag shape in a plan view of the base material.   The outdoor optical panel according to claim 6, wherein the convex portions are arranged at equal intervals.   The outdoor optical panel according to any one of claims 2 to 7, wherein the outdoor optical panel is installed so that the surface on the convex portion side faces the lower side in the vertical direction.   The outdoor optical panel according to any one of claims 1 to 8, wherein the optical panel is installed and used in an inclined state with respect to the horizontal direction by 3 ° or more and 30 ° or less.

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