JP6414384B2 - Interior building material sheet and daylighting system - Google Patents

Description

  The present invention relates to an interior building material sheet and a daylighting system.

  In recent years, as part of efforts to reduce the emission intensity of indoor lighting and reduce the amount of carbon dioxide emission and power consumption, a daylighting device has been proposed that efficiently takes outside light incident on a window indoors. For example, Patent Document 1 includes a structural layer having a plurality of reflecting surfaces, the lengths of one-dimensional direction, the arrangement pitch, and the incident angle of incident light satisfying a predetermined relationship. It is described that the optical element and the illuminating device improve the light capturing efficiency and cope with the reduction in the thickness of the daylighting device.

JP 2012-38626 A

  Most of the light taken indoors by the daylight is provided on the ceiling surface or wall surface and irradiated on the wallpaper. On the other hand, the conventional wallpaper has a total light reflectivity as low as 90% or less, and the light incident on the wallpaper cannot be diffused and reflected efficiently indoors. The light could not be used effectively. Moreover, it is requested | required that such a wallpaper should provide a luminous pattern so that designability may not be impaired.

  The present invention has been made in view of the above circumstances, and provides an interior building material sheet and a daylighting system which are provided so as to brighten the interior by efficiently diffusing and reflecting the daylighted light and preventing the phosphorescent pattern from being visually recognized. The main purpose.

Summary of the first invention for solving the above problems, a reflective substrate, partially formed on the reflective substrate, and 蓄 light pattern is a fixed set of phosphorescent elements including 蓄 light material, the wherein the 蓄 light pattern is punctate if (dot-shaped) diameter 30 to 150 [mu] m, line width if the linear is 30 to 150 [mu] m, interior consisting formed include a plurality of the light storing element It features a building material sheet.

  The gist of the second invention for solving the above problem is that in the interior building material sheet according to the first invention, the phosphorescent pattern is divided into a shape of a letter or a picture in a plan view of the phosphorescent pattern. It is characterized by being made.

Summary of the third invention for solving the above problems, in the interior building material sheet according to any one of the first to the second invention described above, and further comprising a transparent resin layer covering the 蓄 light pattern To do. The gist of the fourth invention for solving the above problem is that in the interior building material sheet according to any one of the first to third inventions, the phosphorescent element has an area ratio of 10 to 10 on the reflective base material. It is characterized by being 50%. The gist of a fifth invention that solves the above problem is that the interior building material sheet according to any one of the first to fourth inventions, wherein the reflective base material is a fine bubble having light diffusion reflectivity. And a white polyethylene terephthalate film having a void structure.

To solve the above problems sixth gist of the present invention includes outdoor and indoor and lighting member for lighting external light indoors at the boundary, the lighting member lighting has been the instrumentation building material sheet light Ru is diffused reflected indoors When, a lighting system Ru wherein the lighting member includes a base portion, a louver portion, wherein the louver portion, said base portion being formed so as to extend linearly, and the A plurality of the louver parts are provided at a predetermined pitch in a direction orthogonal to the extending direction, and the medium of the louver part is made of a transparent resin material containing a colorant having a low refractive index with respect to the medium of the base part. The sheet comprises a reflective base material, a phosphorescent pattern that is partially formed on the reflective base material and includes a phosphorescent material including a phosphorescent material, and a transparent resin layer that covers the phosphorescent pattern, and the phosphorescent material The pattern is dotted (dot Shape), the diameter is 30 to 150 μm, and if linear, the line width is 30 to 150 μm, including the plurality of phosphorescent elements, and the reflective base material is fine and has light diffusivity. It is characterized by a daylighting system that is composed of a white polyethylene terephthalate film having a void structure composed of various bubbles .

  ADVANTAGE OF THE INVENTION According to this invention, the interior building material sheet | seat and the lighting system which were provided so that the light collected from the outdoors could be efficiently diffuse-reflected to brighten indoors, and a phosphorescent pattern might not be visually recognized can be provided.

It is the schematic which shows the lighting system of this invention. FIG. 1 is a cross-sectional view and a plan view showing a first embodiment of a sheet for interior building materials according to the present invention. It is sectional drawing which shows 2nd Embodiment of the sheet | seat for interior building materials of this invention. It is sectional drawing of the lighting member of the lighting system of this invention. It is a schematic sectional drawing which shows one embodiment of the lighting member which comprises the lighting system of this invention.

  EMBODIMENT OF THE INVENTION The form for implementing this invention below is demonstrated based on FIGS.

  FIG. 1 is a schematic view showing a daylighting system provided with an interior building material sheet of the present invention.

  As shown in FIG. 1, sunlight from the outside of the house HS is guided toward an indoor ceiling CE by a daylighting member 10 provided on a window WD, and diffusely reflected by an interior building material sheet 1 provided on the ceiling CE. Further, the interior building material sheet 1 provided on the indoor wall WL is diffused and reflected to brighten the interior.

  FIG. 2 shows one embodiment of the interior building material sheet of the present invention, FIG. 2 (a) is a sectional view thereof, and FIG. 2 (b) is a plan view thereof.

As shown in FIG. 2 (a), FIG. 2 (b), the interior building material sheet 1 comprises a reflective substrate 2, and a 蓄 light pattern 3 provided partially on the reflective substrate 2. As shown in FIG.2 (b), the luminous pattern 3 is formed including the several luminous element 4 formed in the magnitude | size which cannot be recognized visually. In other words, the phosphorescent pattern 3 is composed of a certain set of phosphorescent elements 4 that cannot be recognized by human eyes. Thereby, when the interior building material sheet 1 is observed in a bright room, the phosphorescent pattern 3 can be prevented from being conspicuously seen with respect to the reflective base material 2. Note that, in FIG. 2B, both are schematically divided and illustrated in order to illustrate the configuration relationship between the phosphorescent pattern 3 and the reflective base material 2.

  FIG. 3 is a cross-sectional view showing another embodiment of the interior building material sheet of the present invention. FIG. 3A is a sectional view thereof, and FIG. 3B is a plan view thereof.

As shown in FIG. 3 (a), FIG. 3 (b), the interior building material sheet 1 comprises a reflective substrate 2, and a 蓄 light pattern 3 provided partially on the reflective substrate 2. As shown in FIG.3 (b), the luminous pattern 3 is formed including the several luminous element 4 formed in the magnitude | size which cannot be recognized visually. In other words, the phosphorescent pattern 3 is composed of a certain set of phosphorescent elements 4 that cannot be recognized by human eyes. Thereby, when the interior building material sheet 1 is observed in a bright room, the phosphorescent pattern 3 can be prevented from being conspicuously seen with respect to the reflective base material 2. As shown in FIG. 3B, the phosphorescent pattern 3 provided on the reflective base material 2 has a form in which the outer shape of the phosphorescent pattern 3 in a plan view indicates certain information. It is divided into “→”.

In the interior building material sheet 1 of the present invention, light is typically applied to the phosphorescent pattern 3 in a bright room, and when the light is extinguished, the phosphorescent pattern 3 emits light based on the stored energy. Thereby, a desired pattern, a character, a figure, etc. can be made to float on the sheet | seat 1 for interior building materials.
<Reflective substrate>
The reflective base material 2 can be used as long as it has light diffusion reflectivity, supports the phosphorescent pattern 3, and has a processing suitability and a construction suitability as an interior building material sheet.

  As a material of the reflective base material 2, it is a base material which has light diffusivity, and what is used for a normal interior material may be used.

  Preferably, polyethylene terephthalate is used, and polyethylene terephthalate (PET) is formed into a film by melt extrusion molding, cooled, biaxially stretched and oriented, and crystallized by heat setting. A white polyethylene terephthalate film having a void structure is used. Excellent light diffuse reflection effect.

The thickness of the reflective substrate 2 is not particularly limited, but is usually preferably about 20 to 200 μm from the viewpoint of durability and versatility.
<Phosphorescent pattern>
Phosphorescent pattern 3 is partially formed on the reflective base material 2, 蓄 light pattern 3 is in a state where the reflective substrate 2 and the phosphorescent pattern 3 are juxtaposed viewed in plan in a bright indoor distinguished visually It is formed so that it cannot be done.

  2 (b) and 3 (b), as the enlarged view of a part of the phosphorescent pattern 3 shows, the dot-like phosphorescent elements 4 are arranged in a dispersed manner.

  As the phosphorescent element 4, in addition to the point-like element as in the above example, a linear element such as a straight line, a zigzag, a curved line, etc., and a stripe element or a lattice element can be used.

  The individual size of the phosphorescent element 4 is preferably a size that cannot be visually recognized by human eyes in a state where it is constructed indoors as an interior building material sheet. If it is a dot (dot), the diameter may be 30 to 150 μm, and if it is linear, the line width may be 30 to 150 μm.

Moreover, it is preferable that the area ratio which the luminous element 4 occupies on the reflective base material 2 is 10 to 50%. When the area ratio of the phosphorescent element 4 occupying on the reflective substrate 2 is less than 10%, it is difficult to visually recognize the phosphorescent pattern at the time of light emission, and when it exceeds 50%, the color specific to the phosphorescent material is not white The white reflective base material 2 and the phosphorescent pattern 3 are visually distinguished in a state where the white reflective substrate 2 and the phosphorescent pattern 3 are juxtaposed in a plan view, and the film thickness of the phosphorescent pattern 3 is preferably 100 to 300 μm.

As a method for producing the phosphorescent pattern 3, there are known printing methods such as letterpress printing, offset printing, intaglio printing, gravure printing, screen using ink prepared by mixing phosphorescent material with binder, additive, solvent, etc. A method of forming by printing, inkjet, or the like is employed. Among these, screen printing is suitable as a printing method for securing the film thickness of the phosphorescent pattern.
<Phosphorescent material>
The phosphorescent material is a phosphorescent material constituting the phosphorescent pattern 3, which absorbs and stores energy by irradiation of sunlight, fluorescent lamps, LEDs, etc., and after the irradiation is stopped, the stored energy is changed to light. It is a material that emits light for a while.

Specific examples of phosphorescent materials include zinc sulfide-based (ZnS), calcium sulfide-based (CaS), strontium aluminate, calcium aluminate, barium aluminate and other metal aluminates (MAl ₂ O ₄ , M: metal). Etc. can be used.

  Preferably, Luminova G-300FF manufactured by Nemoto Special Chemical Co., Ltd. is excellent in high luminance and long afterglow and is suitable for a phosphorescent pattern.

  FIG. 4 is a cross-sectional view showing another embodiment of the interior building material sheet of the present invention.

As shown in FIG. 4, the phosphorescent pattern 3 is provided on the reflective substrate 2, and the transparent resin layer 5 is provided so as to cover the phosphorescent pattern 3.
<Transparent resin layer>
The transparent resin layer 5 protects the phosphorescent pattern 3 provided on the reflective substrate 2 and has scratch resistance.

  Examples of the material of the transparent resin layer 5 include (meth) acrylic resin, polyurethane resin, polyester resin, polyamide resin, (meth) acrylic ester-olefin copolymer resin, vinyl chloride resin, ethylene-vinyl acetate copolymer. A coalesced resin (EVA resin), an ionomer resin, an olefin-α olefin copolymer resin and the like can be mentioned, and these can be used alone or in combination of two or more.

  As the curable resin, an ionizing radiation curable resin or a thermosetting resin is used. Of these, ionizing radiation curable resins are preferred from the viewpoint of increasing the crosslink density of the resin forming the surface protective layer and improving the surface abrasion resistance and scratch resistance.

The ionizing radiation curable resin refers to a resin having an energy quantum capable of crosslinking and polymerizing molecules in an electromagnetic wave or a charged particle beam, that is, a resin that is crosslinked and cured by irradiation with ultraviolet rays or electron beams. Specifically, it can be appropriately selected from polymerizable monomers, polymerizable oligomers, or prepolymers conventionally used as ionizing radiation curable resins.
Typically, a (meth) acrylate monomer having a radical polymerizable unsaturated group in the molecule is suitable as the polymerizable monomer, and among them, a polyfunctional (meth) acrylate is preferable. Here, “(meth) acrylate” means “acrylate or methacrylate”, and other similar ones have the same meaning. The polyfunctional (meth) acrylate is not particularly limited as long as it is a (meth) acrylate having two or more ethylenically unsaturated bonds in the molecule. These polyfunctional (meth) acrylates may be used singly or in combination of two or more.

  As other embodiment, the decorative sheet provided with the adhesive layer on the side opposite to the side where the phosphorescent pattern 3 of the interior building material sheet 1 of the present invention is provided, and the side where the phosphorescent pattern 3 of the interior building material sheet 1 is further provided. It is used as a decorative panel or decorative board in which the opposite side is bonded to a panel or gypsum board.

  As long as the daylighting member 10 used in the daylighting system shown in FIG. 1 has a function of guiding light from the outside toward the indoor ceiling, a reflector, a prism, a lens, and the like are provided in a louver shape, and a daylighting apparatus or the like is provided. Can be used.

  FIG. 5 is a cross-sectional view showing an embodiment of the daylighting member 10.

  As shown in FIG. 5, the daylighting member 10 has a louver portion 7 formed in the base portion 6, and is formed so that the louver portion 7 extends linearly, and the extending direction is horizontal. Installed. A plurality of louver portions 7 are provided at a predetermined pitch in a direction (vertical direction) orthogonal to the extending direction.

  The louver portion 7 has a function of reflecting outdoor light on the upper surface thereof and guiding it toward the indoor ceiling.

  The louver portion 7 is formed by being connected to a pair of inclined surfaces having a surface facing upward (same as the upper side in FIG. 5 and other drawings) and a surface facing downward (same as the upper side in FIG. 5 and other drawings). In this embodiment, the cross-sectional shape is a trapezoid. In the daylighting member 10, the ability to bend the optical path of the incident light in the shape of an inclined surface that functions as a reflecting surface in the louver portion 7 varies. Therefore, various shapes can be applied to the cross-sectional shape of the louver portion 7 depending on the purpose and performance.

  The medium of the louver part 7 is set so that the refractive index is lower than the medium of the base part 6. For example, when the louver portion 7 is filled with a material, a material made of a highly reflective material or a material made of a transparent resin material whose refractive index is smaller than that of the base portion 6 can be used. In the case of a structure made of a transparent resin material having a refractive index smaller than that of the base portion 6, outside light incident on an inclined surface facing upward of the louver portion 7 is incident at an angle larger than the critical angle. Total reflection on the slope. As a result, the optical path of incident light from the outside is bent and emitted toward the indoor ceiling. The transparent resin material may contain a white agent, a black agent, and other colorants, and the emitted light can be changed to scattered light and the design of the daylighting member 10 can be improved. Note that the louver portion 7 may be a gap without being filled with a transparent resin material or the like.

DESCRIPTION OF SYMBOLS 1 Sheet | seat for interior building materials 2 Reflective base material 3 Luminous pattern 4 Luminous element 5 Transparent resin layer 6 Transparent base part 7 Reflective louver part 10 Daylighting member WD Window CE Ceiling WL Wall HS House

Claims (1)

A daylighting member for daylighting outside light indoors at the boundary between the outdoors and indoors;
Wherein the inside instrumentation building materials sheet the light lighting by lighting member Ru is diffused reflected indoors, a lighting system Ru provided with,
The daylighting member includes a base portion and a louver portion,
The louver portion is formed on the base portion so as to extend linearly, and a plurality of louver portions are provided at a predetermined pitch in a direction orthogonal to the extending direction.
The medium of the louver part is composed of a transparent resin material containing a colorant having a low refractive index with respect to the medium of the base part,
The interior building material sheet is:
With reflective substrate
A phosphorescent pattern that is partially formed on the reflective substrate and that is a certain set of phosphorescent elements including a phosphorescent material, and a transparent resin layer that covers the phosphorescent pattern,
The phosphorescent pattern is formed to include a plurality of phosphorescent elements having a diameter of 30 to 150 μm if it is a dot (dot), and a line width of 30 to 150 μm if it is linear.
The said reflection base material is a daylighting system comprised from the white polyethylene terephthalate film of the void structure which consists of a microscopic bubble which has a light diffuse reflection property .

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