JP2013112940A - Luminous building material panel for outdoor use and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminous building material panel for outdoor use, which is reliably used under a severe environment in the open air for a long period of time, and also manufactured with adequate productivity, and to provide a method for manufacturing the same.SOLUTION: The luminous building material panel comprises: a building material panel; a surface emitting panel that has a plurality of light-emitting elements, is formed on one face side of the building material panel and has the whole face that emits light of uniform color; and a stainproof layer that is formed on an outermost surface in a side opposite to the building material panel of the surface emitting panel.

Description

  The present invention relates to an outdoor light emitting building material panel which is a building material having a surface light emitting function, and a method for manufacturing the same.

  A technique for embedding a light emitter in a building material (building material) used for a building has been conventionally known. For example, Patent Document 1 discloses a building material having an illumination function formed by housing a light emitting device that emits point light within a substrate. A building material in which such a light-emitting body is embedded eliminates the need for a separate lighting fixture by providing the building material itself with a light emitting function, is superior in design, and is expected to reduce costs in the building material.

  In recent years, surface-emitting lighting devices have been attracting attention as next-generation lighting because of their soft impression of light and energy saving performance. Organic electroluminescence (organic EL (Electro Luminescence), OEL: Organic Electro Luminescence) Or a combination of a light emitting diode and a light guide plate has been developed. In particular, the organic EL element has attracted attention because it can reduce the size and weight of the device and also generates little heat. Here, organic EL refers to a phenomenon in which energy is applied to a light emitting material made of an organic substance by applying a voltage to release energy as light when the excited light emitting material returns to its original state. Say. An organic EL element that is a light-emitting element using organic EL technology includes an organic layer containing a light-emitting material made of an organic substance and two electrodes (a cathode and an anode) facing each other so as to sandwich the organic layer on a substrate. A structure in which layers are sequentially stacked is generally used. For example, Patent Document 2 discloses a technique using an organic EL element for illumination.

  In Patent Document 3, as a technique for lighting in a building, a load is applied by protecting a light emitting module in which a surface light emitting panel made of an organic EL element is incorporated in a housing with a transparent elastic body such as silicone rubber. A technique for preventing breakage by dispersing is disclosed.

JP 2010-180563 A JP 2009-218094 JP 2009-076781 A

  By the way, as outdoor illumination, streetlights or illumination attached to the outer wall of a building are used. However, since silicone rubber cannot prevent adhesion of dust, rainwater, etc., the indoor lighting of Patent Document 3 cannot be used for outdoor lighting. In addition, since silicone rubber is generally very soft (the majority is Shore A 90 or less), there is a problem that it is easily damaged when used outdoors. Further, since the silicone rubber is formed by adhering a silicone rubber sheet or applying a silicone rubber stock solution and polymerizing with heat or the like, there is a problem that productivity is poor. In particular, when the organic EL element is used for outdoor illumination, the organic EL element may be deteriorated by ultraviolet rays of sunlight.

  The present invention has been made in view of such problems, and its object is to provide an outdoor light-emitting building material panel that guarantees long-term use in harsh outdoor environments and has good productivity, and It is in providing the manufacturing method.

  In order to achieve the above object, an outdoor light-emitting building material panel of the present invention has a building material panel and a plurality of light-emitting elements, and is formed on one surface side of the building material panel and emits light in a uniform color as a whole surface. It has a dirt prevention layer formed in the outermost surface on the opposite side to the building material panel with respect to the light emitting panel and the surface emitting panel. In addition, the number of the surface emitting panels which the outdoor light-emitting building material panel of this invention has is not limited to one, One surface side of one building material panel may have a some surface emitting panel.

  In the outdoor light-emitting building material panel described above, it is preferable that the antifouling layer contains a fluorine-based resin. Moreover, it is preferable that the said antifouling layer contains a photocatalyst.

  It is preferable that the outdoor light emitting building material panel described above has an ultraviolet absorbing layer on the dirt prevention layer side with respect to the surface light emitting panel. Moreover, it is preferable that the outdoor light-emitting building material panel described above has a light control layer on the dirt prevention layer side with respect to the surface light-emitting panel.

  It is preferable that the outdoor light-emitting building material panel described above has a resin layer (hereinafter sometimes referred to as “first resin layer”) between the building material panel and the surface light-emitting panel. Moreover, it is preferable that the outdoor light-emitting building material panel described above has a resin layer (hereinafter may be referred to as a “second resin layer”) between the surface light-emitting panel and the antifouling layer. Furthermore, the outdoor light-emitting building material panel described above preferably has a resin layer (hereinafter sometimes referred to as “third resin layer”) at an end of the surface light-emitting panel.

  In the outdoor light-emitting building material panel described above, the light-emitting element is preferably an organic electroluminescence element.

  In the above-described outdoor light-emitting building material panel, it is preferable that the emission color of the surface light-emitting panel is variable.

  In order to achieve the above object, a method for manufacturing an outdoor light-emitting building material panel according to the present invention includes a building material panel and a plurality of light-emitting elements, and is formed on one surface side of the building material panel so that the entire surface has a uniform color. The building material panel, the surface emitting panel, and the stain prevention layer, comprising: a surface emitting panel that emits light; and a stain prevention layer formed on an outermost surface opposite to the building material panel with respect to the surface emission panel. Is integrally formed by a vacuum heating lamination method using a resin layer.

  By using the structure described above, the outdoor light-emitting building material panel of the present invention guarantees long-term use under severe outdoor conditions and has good productivity.

  In addition, when the above-described stain prevention layer contains a fluorine-based resin, it is possible to reduce costs and improve productivity while providing the stain prevention layer with high stain resistance.

  When the above-described stain prevention layer contains a photocatalyst, it becomes possible to decompose the stain substance attached to the surface of the stain prevention layer by a catalytic reaction using ultraviolet rays.

  When the outdoor light-emitting building material panel of the present invention has an ultraviolet absorbing layer on the antifouling layer side with respect to the surface light-emitting panel, the ultraviolet light absorbing layer absorbs ultraviolet rays irradiated to the outdoor light-emitting building material panel, It is possible to suppress ultraviolet rays from reaching the surface light emitting panel and prevent the surface light emitting panel from being deteriorated by ultraviolet rays.

  When the outdoor light emitting building material panel of the present invention has a light control layer on the antifouling layer side with respect to the surface light emitting panel, the surface light emitting panel is shielded from ultraviolet rays and the light emitted from the surface light emitting panel is transmitted. Can be adjusted freely.

  According to the method for manufacturing an outdoor light-emitting building material panel of the present invention, the building material panel, the surface light-emitting panel, and the antifouling layer are integrally formed by a vacuum heating lamination method using a resin layer. Can be prevented.

It is a perspective view of the outdoor light-emitting building material panel which concerns on 1st Example. It is a bottom view of the outdoor light-emitting building material panel which concerns on 1st Example. It is sectional drawing of the light-emitting building material panel in line III-III of FIG. It is a perspective view of the surface emitting panel which comprises the light emitting building material panel for outdoor concerning 1st Example. It is a top view of the surface emitting panel which comprises the light-emitting building material panel for outdoors which concerns on 1st Example. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. It is an electrical configuration circuit diagram of the surface light-emitting panel constituting the outdoor light-emitting building material panel according to the first embodiment. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on 1st Example. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on 1st Example. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on 1st Example. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on 1st Example. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on 1st Example. It is sectional drawing which showed the light-emitting building material panel for outdoors concerning the 1st modification similarly to FIG. It is sectional drawing which showed the light-emitting building material panel for outdoor concerning the 2nd modification similarly to FIG. It is sectional drawing which showed the light-emitting building material panel for outdoors which concerns on a 3rd modification similarly to FIG. It is sectional drawing which showed the light-emitting building material panel for outdoor concerning the 4th modification similarly to FIG. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on a 5th modification. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on a 5th modification. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on a 5th modification. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on a 5th modification. It is sectional drawing in each manufacturing process of the light-emitting building material panel for outdoors which concerns on a 5th modification.

  Hereinafter, embodiments of the present invention will be described in detail based on examples and modifications with reference to the drawings. In addition, this invention is not limited to the content demonstrated below, In the range which does not change the summary, it can change arbitrarily and can implement. In addition, the drawings used for the description of each example schematically show an outdoor light-emitting building material panel according to the present invention, and are partially emphasized, enlarged, reduced, or omitted to deepen understanding. In some cases, it does not accurately represent the scale or shape of each component. Furthermore, the various numerical values used in the embodiments and the modifications are only examples, and can be variously changed as necessary.

<First embodiment>
(Configuration of outdoor light-emitting building material panels)
First, with reference to FIG. 1 thru | or FIG. 3, the structure of the light-emitting building material panel 1 for outdoors of a present Example is demonstrated in detail. FIG. 1 is a perspective view of an outdoor light-emitting building material panel 1 according to the present embodiment. FIG. 2 is a bottom view of the outdoor light-emitting building material panel 1 according to the present embodiment (that is, a plan view on the building material panel side described later). 3 is a cross-sectional view of the light-emitting building material panel 1 taken along line III-III in FIG. In the outdoor light-emitting building material panel of the present invention, the first resin layer 3 in FIGS. 1 and 3 is not an essential layer, and the surface light-emitting panel 4 may be fixed on the building material panel 2. Moreover, in the outdoor light-emitting building material panel of the present invention, the through hole 6 and the composite cable 7 in FIGS. 2 and 3 are not essential, but preferably have these.

  As shown in FIG.1 and FIG.3, in order to distinguish the outdoor light-emitting building material panel 1 from the building material panel (building material panel) 2 and the resin layer (resin layer of another part), it is hereafter called "the 1st resin layer 3". The surface light emitting panel 4 and the antifouling layer 5 are provided. Specifically, the surface light emitting panel 4 is attached to the building material panel 2 via the first resin layer 3, and the antifouling layer 5 is provided on the surface light emitting panel 4. In FIG. 1, one surface emitting panel 4 is attached on one building material panel 2 via the first resin layer 3, but the number of the surface emitting panels 4 is limited to one. The some surface emitting panel 4 may be affixed on one building material panel 2 without.

  As shown in FIGS. 2 and 3, the outdoor light-emitting building material panel 1 includes a surface (hereinafter referred to as “first”) of the surface light-emitting panel 4 penetrating the building material panel 2 and the first resin layer 3. Through-hole 6 reaching the second surface 4b "may be formed. The overall shape of the through-hole 6 is cylindrical, and the opening shape of the through-hole 6 in the building material panel 2 is circular. Here, the through-hole 6 reaches a connector (not shown) of the surface light emitting panel 4, and the connector is exposed. A composite cable 7 is provided inside the through hole 6, and the composite cable 7 is connected to the exposed connector of the surface emitting panel 4. Here, the composite cable 7 includes a power cable and a control signal cable. The power cable is connected to a power supply unit 25 described later, and the control signal cable is connected to a control unit 26 described later. With such a configuration, driving power can be supplied to the surface light emitting panel 4 from the outside, and the surface light emitting panel 4 can emit light.

  2 and 3, the opening diameter of the through hole 6 is larger than the diameter of the composite cable 7, and there is a gap between the through hole 6 and the composite cable 7. An insulating member such as an epoxy resin or a silicone resin may be injected into the gap between the cable 7 and the through hole 6 may be sealed. Alternatively, the diameter of the composite cable 7 may be the same as the opening diameter of the through hole 6, and the composite cable 7 may be provided in the through hole 6 without a gap.

(Building material panel)
The building material panel 2 is a panel member that has been conventionally used in general buildings, and is made of various materials depending on the intended use. Typical building material panels 2 include, for example, a metal panel such as aluminum, a concrete panel such as lightweight aerated concrete (ALC), an aluminum composite panel in which an aluminum plate is laminated on a resin core material, and a silica panel. An acid calcium panel etc. are mentioned. Further, the building material panel 2 may be a tile made of earthenware.

(First resin layer)
The first resin layer 3 is a resin layer between the building material panel 2 and the surface light emitting panel 4. It is preferable that the 1st resin layer 3 is equipped with adhesiveness. As the material having adhesiveness, an acrylic resin adhesive, an epoxy adhesive, a silicone adhesive, or the like is preferable. The first resin layer 3 may be a laminate such as a double-sided tape. As the double-sided tape, a polyester base material, a polyimide base material, or a metal foil base material using a silicone-based adhesive material or an acrylic adhesive material can be used. That is, in the present embodiment, the building material panel 2 and the surface light emitting panel 4 that can be easily bonded to each other are used. Various things can be used in consideration of the adhesive strength to 4.

  The first resin layer 3 may contain a filler such as glass fiber in order to provide the first resin layer 3 with better adhesive properties (that is, greater adhesive strength) and flame retardancy. Further, by providing a glass nonwoven fabric or woven fabric between the first resin layer 3 and the surface light emitting panel 4, the building material panel 2 and the surface light emitting panel via the first resin layer 3 and the glass nonwoven fabric or the woven fabric. 4 can be firmly bonded together.

  In addition, the method of bonding the building material panel 2 and the surface emitting panel 4 is not limited to the method using an adhesive layer as described above. For example, a method of screwing the building material panel 2 and the surface light emitting panel 4, a method of fastening the building material panel 2 and the surface light emitting panel 4 with a spring force, and fitting the surface light emitting panel 4 to the building material panel 2 to integrate them. A method of mechanically fixing the building material panel 2 and the surface light emitting panel 4 such as a method of fitting and fixing can be used. Moreover, you may use combining this mechanical fixing method and the method of using the contact bonding layer mentioned above.

(Anti-stain layer)
The antifouling layer 5 is transparent and has antifouling properties. The term “transparent” as used herein does not need to be colorless and transparent. If the illumination light from the surface light emitting panel in the outdoor light emitting building material panel of the present invention is sufficiently transmitted to the outside, some light absorption or It may have light scattering properties. Further, “antifouling” means that it is difficult to stain, and more specifically, has a property that surface energy is small and / or dirt can be decomposed.

  The surface energy of the antifouling layer 5 is preferably smaller than the surface energy of the surface emitting panel 4. Specifically, the antifouling layer 5 preferably has a contact angle with water measured according to the method defined in JIS R3257 of 80 degrees or more, more preferably 90 degrees or more, and the same. The upper limit may be higher than 150 ° by using a so-called super water-repellent material such as saturated fluoroalkyl, but is preferably 150 ° or lower. As a result, since the dirt prevention layer 5 has water repellency, when the outdoor light-emitting building material panel 1 is used on the outer wall, the outdoor light-emitting building material panel 1 is prevented from being soiled by preventing the adhesion of rain or dust. Can be prevented. Specific examples of suitable materials for the antifouling layer 5 include polyolefin resins such as polyethylene, polypropylene, and polycycloolefin, or 4-fluoroethylene-perchloroalkoxy copolymer (PFA), 2-ethylene-4. -A fluororesin such as fluorinated ethylene copolymer (ETFE) or poly-3-fluoroethylene chloride (PCTFE) can be used.

  In addition, on the above-described resin, polytetrafluoroethylene such as glass, polymethyl methacrylate, acrylic resin such as cross-linked acrylate, aromatic polycarbonate resin such as Pisphenol A polycarbonate, or polyester resin such as polyethylene terephthalate or polyethylene naphthalate A surface coating such as (PTFE) or a silane coupling agent may be applied to improve the antifouling property.

  Even when the dirt prevention layer 5 has a property of decomposing dirt, it is possible to prevent the outdoor light-emitting building material panel 1 from being dirty. Specifically, the property of decomposing dirt is, for example, that the anti-smudge layer 5 is formed by coating a photocatalyst such as titanium oxide on the surface of the resin described above (on the side opposite to the surface light emitting panel 4). Etc. Since the photocatalyst has a “self-cleaning” function of decomposing dirt substances by a catalytic reaction using ultraviolet rays, the dirt prevention layer 5 has more excellent antifouling properties by exposing the photocatalyst to the surface of the dirt prevention layer 5. Will have. That is, the photocatalyst is particularly effective when the outdoor light-emitting building material panel 1 is used outdoors with strong ultraviolet rays.

  Moreover, you may contain a photocatalyst in resin mentioned above. Here, when using a granular photocatalyst, the particle size is about 1-100 micrometers normally.

  As described above, the antifouling layer 5 can be made of various materials and can have various structures as long as it is transparent and has antifouling properties. It is preferable to use a series resin. In particular, when the outdoor use is assumed, the antifouling layer 5 is required to have a mechanical strength greater than that of the indoor, and environmental resistance capable of withstanding wind and rain and temperature changes over a long period. For example, it is preferable to use ETFE which is a fluororesin obtained from tetrafluoroethylene and an ethylene copolymer (tetrafluoroethylene / ethylene copolymer resin). ETFE has a hardness of about 70 on Shore D, compared with the silicone rubber of Patent Document 3.

  The dirt prevention layer 5 is preferably thicker in terms of its antifouling property, and the protective property is easily maintained. On the other hand, the weight and thickness of the outdoor light-emitting building material panel 1 as a whole are small, and its light The thinner one is preferable in that the permeability is not easily deteriorated. Therefore, in consideration of these, the thickness of the antifouling layer 5 is preferably 20 to 2000 μm.

  The antifouling layer 5 can be produced by applying a liquid raw material on the surface emitting panel 4 and curing the liquid raw material with heat or ultraviolet rays. In consideration of the productivity of the anti-stain layer 5, the anti-stain layer 5 formed in a sheet shape is formed on the surface light emitting panel 4 as the second resin layer (not shown) and the first resin layer 3. You may affix via the same material.

  Here, a resin having a small surface energy as described above, particularly a fluorine-based resin, generally does not have good adhesive properties to the above-described adhesive. For this reason, it is preferable that the surface of the antifouling layer 5 that contacts the surface light emitting panel 4 is subjected to surface activation treatment. Examples of the surface activation treatment include metal sodium treatment. When the surface of the antifouling layer 5 is treated with sodium metal, fluorine atoms on the surface of the antifouling layer 5 in contact with the surface light emitting panel 4 are blown off, a carbon skeleton is constructed, and the adhesion is improved. And it is preferable to perform the degreasing process which used toluene etc. further on the surface of the stain | pollution | contamination prevention layer 5 by which the metal sodium process was carried out. The surface activation treatment is not limited to the metal sodium treatment, and may be, for example, a corona discharge treatment, a plasma treatment, or a sputtering treatment.

  The antifouling layer 5 includes, for example, film processability, heat resistance, weather resistance, mechanical properties, dimensional stability, antioxidant properties, slipperiness, mold release properties, flame retardancy, antifungal properties, electrical properties, Components such as various plastic compounding agents may be contained for the purpose of improving and / or modifying other properties and the like. Examples of the component include a lubricant, a crosslinking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a filler, a reinforcing agent, a reinforcing agent, an antistatic agent, a flame retardant, a flame retardant, a foaming agent, and an antifungal agent. And pigments. Various known additives other than these may be used as long as the excellent effects of the present invention are not significantly impaired.

  Among the components described above, it is particularly preferable to add an ultraviolet absorber to the antifouling layer 5 because deterioration of the surface light emitting panel 4 due to ultraviolet rays when the outdoor light emitting building material panel 1 is used outdoors for a long time can be reduced. . In general, since organic substances are easily affected by ultraviolet rays, an organic ultraviolet absorber is included in the antifouling layer 5 especially when the surface emitting panel 4 is made of an organic substance such as an organic EL element. It is preferable.

  The ultraviolet absorber usually absorbs harmful ultraviolet rays in sunlight and converts them into innocuous heat energy within the molecule, thereby preventing excitation of active species that initiate photodegradation in the polymer. Therefore, examples of the ultraviolet absorber used in this example include benzophenone, benzotriazole, salicylate, acrylonitrile, metal complex, hindered amine, ultrafine titanium oxide (particle diameter, 0.01 to 0.06 μm), or an ultraviolet absorber such as an inorganic type such as ultrafine zinc oxide (0.01 to 0.04 μm), or a combination thereof can be used. Furthermore, the polymer type thing formed by chemically bonding the above-mentioned ultraviolet absorber such as benzophenone or the above-mentioned antioxidant such as phenol to the main chain or side chain constituting the polymer can also be used. The content of the ultraviolet absorber varies depending on the particle shape, density and the like, but is preferably 0.1 to 10% by weight.

  If the ultraviolet absorber is present on the light emitting surface side of the surface light emitting panel 4, the above-described effect can be obtained. Therefore, the second resin provided between the surface light emitting panel 4 and the antifouling layer 5 described later. Even if it is contained in a layer or the like, it may be contained in both the antifouling layer 5 and the second resin layer. Further, when a layer other than the antifouling layer 5 and the first resin layer 3 is present on the light emitting surface side of the surface light emitting panel 4, it may be included in a layer other than the antifouling layer 5 and the first resin layer 3. Good. That is, in the present invention, the ultraviolet absorbing layer refers to a layer containing an ultraviolet absorber, which may be the antifouling layer 5, the second resin layer, or other layers. . When the ultraviolet absorbing layer is provided separately from the stain preventing layer 5, the ultraviolet absorbing layer is not limited to any other order as long as it is between the stain preventing layer 5 and the surface emitting panel 4.

  Moreover, when the light emission of the outdoor light-emitting building material panel 1 is unnecessary, such as in the daytime, a photochromic material that increases absorption in the visible light region when irradiated with ultraviolet rays may be used as the ultraviolet absorber described above. Thereby, the light in the visible light region is also blocked while the ultraviolet rays are irradiated, and the surface light emitting panel 4 can be more effectively prevented from being deteriorated. In the nighttime when ultraviolet rays are not irradiated, the photochromic material becomes transparent, and light can be emitted from the outdoor light-emitting building material panel 1 to the outside.

(Surface emitting panel)
Next, the structure of the surface light emitting panel 4 in the present embodiment will be described in detail with reference to FIGS. 4 to 6. FIG. 4 is a perspective view of the surface light-emitting panel 4 constituting the outdoor light-emitting building material panel of this embodiment. FIG. 5 is a top view of the surface light emitting panel 4. 6 is a cross-sectional view taken along line VI-VI in FIG.

  In the present embodiment, the surface light emitting panel 4 is an organic EL surface light emitter made of a plurality of organic electroluminescence (organic EL) elements, but the surface light emitting panel 4 according to the present invention is not limited to this. Alternatively, an inorganic EL or inorganic LED and a light guide plate may be combined.

  As shown in FIGS. 4 to 6, the surface light-emitting panel 4 in this example includes a transparent substrate 11, an organic EL element 12, a light diffusion layer 13, and a sealing layer 14. The organic EL element 12 is classified into three types: an organic EL element 12R whose emission color is red, an organic EL element 12G whose emission color is green, and an organic EL element 12B whose emission color is blue. When the outdoor light emitting building material panel shown in FIGS. 1 to 3 is formed using the surface light emitting panel 4 having such a configuration, the antifouling layer 5 exists on the transparent substrate 11 side constituting the surface light emitting panel 4, The building material panel 2 is present on the side of the sealing layer 14 constituting the surface light emitting panel 4.

  In the present embodiment, the transparent substrate 11 is a glass substrate. The transparent substrate 11 may be a substrate having a property of transmitting visible light, and may be made of a transparent resin film such as ceramics, and further polyester, polymethacrylate, polycarbonate, or polyether sulfone. Further, when the organic EL element 12 is formed on the building material panel 2, the transparent substrate 11 may be omitted.

  As a more specific configuration of the surface light-emitting panel 4, a surface of the transparent substrate 11 on the building material panel 2 side (hereinafter sometimes referred to as “first surface 11a”) includes a plurality of organic EL elements 12R, a plurality of The organic EL element 12G and the plurality of organic EL elements 12B are arranged in parallel in a stripe shape. These organic EL elements are juxtaposed repeatedly in the order of the organic EL elements 12R, 12G, and 12B. With such a configuration, red light emitted from the plurality of organic EL elements 12R, green light emitted from the plurality of organic EL elements 12G, and blue light emitted from the plurality of organic EL elements 12B are combined. Then, the combined light of uniform color is radiated from one surface light emitting panel 2 as a whole. The number of each of the organic EL elements 12R, 12G, and 12B that emit light of each color may be one. However, the light emitting surface is enlarged, the luminance of the surface light emitting panel 4 is increased, and good light is emitted. In the case of mixing, it is preferable to arrange many organic EL elements 12R, 12G, and 12B in parallel.

  As shown in FIGS. 5 and 6, the organic EL element 12 </ b> R whose emission color is red was formed on the anode (transparent electrode) 15 </ b> R and the anode 15 </ b> R formed on the first surface 11 a of the transparent substrate 11. The organic layer 16R and the anode 15R are paired with a cathode (metal electrode) 17R sandwiching the organic layer 16R. Similarly, the organic EL element 12G whose emission color is green includes an anode (transparent electrode) 15G formed on the first surface 11a of the transparent substrate 11, an organic layer 16G formed on the anode 15G, and an anode 15G. The organic EL element 12B, which is composed of a cathode (metal electrode) 17G sandwiching the organic layer 16G and paired with the organic layer 16G and having a blue emission color, has an anode (transparent electrode) formed on the first surface 11a of the transparent substrate 11. ) 15B, an organic layer 16B formed on the anode 15B, and a cathode (metal electrode) 17B sandwiching the organic layer 16B in pairs with the anode 15B. In addition, when any of the anodes 15R, 15G, and 15B is not specified, it is also simply referred to as the anode 15, and when any of the organic layers 16R, 16G, and 16B is not specified, it is also simply referred to as the organic layer 16, and the cathodes 17R and 17G. , 17B is simply referred to as the cathode 17 when not specified. That is, in the present embodiment, the anode 15, the organic layer 16, and the cathode 17 constituting each organic EL element 12 are sequentially laminated on the first surface 11 a of the transparent substrate 11.

  In this embodiment, the anode 15 is made of indium tin oxide (ITO). The anode 15 has a function of injecting holes into the organic layer 16 and is transparent to light emission of each color in the organic layer 16. That is, the anode 15 functions as a transparent electrode. The anode 15 is formed by a sputtering method, a vacuum deposition method, or the like. It is preferable to perform ultraviolet irradiation or ozone treatment in order to remove impurities adhering to the anode 15 after forming the anode 15 and adjust the ionization potential to improve the hole injection property.

  The anode 15 is not limited to being composed of indium tin oxide, and has a function of injecting holes into the organic layer 16 and is transparent to light of each color in the organic layer 16. If present, for example, it may be composed of a metal oxide such as indium zinc oxide, a conductive polymer such as poly (3-methylthiophene), polypyrrole, or the like. Moreover, the anode 15 may be comprised from a different material for every organic EL element 12R, 12B, 12G.

  Although not shown in FIG. 5, the organic layer 16 has a structure in which a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer are stacked in this order from the anode 15 side. Is preferred. The hole injection layer and the hole transport layer are preferably formed from a hole transport material, and examples of the hole transport material include aromatic amine derivatives, phthalocyanine derivatives, porphyrin derivatives, oligothiophene derivatives. , Polythiophene derivatives, benzylphenyl derivatives, fluorene group-linked tertiary amines, hydrazone derivatives, silazane derivatives, silanamine derivatives, phosphamine derivatives, quinacridone derivatives, polyaniline derivatives, polypyrrole derivatives, polyphenylene vinylene derivatives, polythienylene vinylene derivatives, Examples thereof include polyquinoline derivatives, polyquinoxaline derivatives, and carbon. The electron transport layer is preferably formed of an electron transport material. Examples of the electron transport material include metal complexes such as an aluminum complex of 8-hydroxyquinoline, 10-hydroxybenzo [h] quinoline. Metal complexes, oxadiazole derivatives, distyrylbiphenyl derivatives, silole derivatives, 3-hydroxyflavone metal complexes, 5-hydroxyflavone metal complexes, benzoxazole metal complexes, benzothiazole metal complexes, trisbenzimidazolylbenzene, quinoxaline compounds, phenanthroline Examples thereof include 2-t-butyl-9,10-N, N′-dicyanoanthraquinone diimine, n-type hydrogenated amorphous silicon carbide, n-type zinc sulfide, and n-type zinc selenide. The electron injection layer is preferably made of a metal having a low work function. Examples of the metal having a low work function include alkali metals such as sodium and cesium, and alkaline earth metals such as barium and calcium.

The following are mentioned as a luminescent material used for the said light emitting layer. Examples of the light-emitting material that gives red light emission include DCM (4- (dicyanomethylene) -2-methyl-6- (p-dimethylaminostyryl) -4H-pyran) compounds, benzopyran derivatives, rhodamine derivatives, benzothioxanthene derivatives, aza Examples include benzothioxanthene. Examples of the light emitting material that gives green light emission include quinacridone derivatives, coumarin derivatives, and aluminum complexes such as Al (C ₉ H ₆ NO) ₃ . Furthermore, examples of the light emitting material that gives blue light emission include naphthalene, perylene, pyrene, anthracene, coumarin, p-bis (2-phenylethenyl) benzene, and derivatives thereof. In addition, any one kind may be used for the luminescent material mentioned above, and two or more types may be used together by arbitrary combinations and ratios.

  In the present embodiment, the cathode 17 does not need to be transparent, and thus is made of aluminum. That is, the cathode 17 is a metal electrode. The cathode 17 is usually formed by a sputtering method, a vacuum deposition method, or the like. In addition, the cathode 17 is not limited to being comprised from aluminum, For example, you may be comprised from suitable metals, such as tin, magnesium, indium, calcium, silver, or those alloys. Specifically, for example, a low work function alloy such as a magnesium-silver alloy, a magnesium-indium alloy, and an aluminum-lithium alloy can be used.

  By juxtaposing the organic EL elements 12 in this way, red, green, and blue light are emitted from the organic EL elements 12R, 12G, and 12B. Here, for example, by adjusting the light emission amounts of red light, green light, and blue light, it is possible to make white light appear to be emitted from the surface light emitting panel 4. It is also possible to make it appear that light of a color other than white light is emitted by adjusting the amount of light emitted from red light, green light, and blue light. Can be obtained.

  In the present embodiment, as shown in FIGS. 4 to 6, the sealing layer 14 covers each organic EL element 12, and has a function of preventing oxidative deterioration of the organic layer of each organic EL element 12 due to the atmosphere. ing. In this embodiment, the sealing layer 14 is an epoxy resin. The sealing layer 14 may be a resin such as a silicone resin in addition to the epoxy resin.

  Moreover, the sealing layer 14 is not limited to being comprised from resin as mentioned above. For example, the sealing layer 14 may be composed of a member such as glass that covers the plurality of organic EL elements 12 as a whole.

  In this embodiment, as shown in FIGS. 4 and 6, the light diffusing layer 13 is the entire surface of the transparent substrate 11 on the side of the antifouling layer 5 (hereinafter sometimes referred to as “second surface 11 b”). It is formed so as to cover. The light diffusing layer 13 has an effect of diffusing the light of each color emitted from the organic EL element 12 and mixing the colors uniformly. Due to such an effect, the member composed of the transparent substrate 11 and the light diffusion layer 13 as a whole functions as a single light source. In this embodiment, the light diffusion layer 13 is composed of a film in which fine particles are dispersed in a transparent resin.

  In addition, the light-diffusion layer 13 is not limited to such a film, For example, it can form by roughening the surface of the transparent substrate 11. Also, the anti-smudge layer 5 in FIGS. 1 to 3 may contain light diffusing fine particles, and the anti-smudge layer 5 may have a light diffusing function. For example, when the antifouling layer 5 contains photocatalytic particles such as titanium oxide, the particles may have a light diffusion function. In such a case, the particle size of the particles is usually about 1 to 100 μm, as in the case described above.

  In this embodiment, each of the surface light emitting panels 4 includes three types of organic EL elements 12 (an organic EL element 12R that emits red light, an organic EL element 12G that emits green light, and an organic EL element 12B that emits blue light). However, the present invention is not limited to this. For example, the surface light-emitting panel 4 may be configured from two types of organic EL elements 12 selected from the above-described three types of organic EL elements 12R, 12G, and 12B. The light emitting panel 4 may be configured.

  Moreover, in the surface emitting panel 4 in the present embodiment, the emission color is made variable by arranging a plurality of organic EL elements 12 having different emission colors, but the surface emission is obtained by stacking a plurality of layers having different emission colors. By configuring the panel 4, the emission color can be made variable.

  Further, when there is no need to change the color of light emitted from each surface light emitting panel 4, the light emitting elements 12 of the same color may be provided on the transparent substrate 11. That is, for example, an outdoor light-emitting building material panel that emits light only in red, an outdoor light-emitting building material panel that emits light only in green, and an outdoor light-emitting building material panel that emits light only in blue are separately formed with the above-described configurations. Also good. When light is emitted in a single color as described above, light diffusion by the light diffusion layer 13 may be unnecessary in each surface emitting panel 4.

  In the present embodiment, the surface light emitting panel 4 synthesizes the light emitted from each organic EL element 12 to emit combined light having various colors and luminances, thereby supplying the amount of power supplied to each organic EL element 12. A power supply circuit 21 to be described later is provided. The power supply circuit 21 may be provided on the first surface 11 a of the transparent substrate 11 on which the organic EL element 12 is provided, or may be provided on the second surface 11 b of the transparent substrate 11. Further, the power supply circuit 21 may be provided outside the surface emitting panel 4.

(Electrical configuration circuit of surface emitting panel)
FIG. 7 is an electric configuration circuit diagram of the surface emitting panel 4 in the present embodiment. As shown in FIG. 7, the surface light emitting panel 4 includes an organic EL element group 20 composed of a plurality of organic EL elements, and a power supply circuit 21 that controls the amount of power supplied to the organic EL element group 20. Yes. Specifically, the organic EL element group 20 includes a red light emitting element group 22 composed of a plurality of organic EL elements 12R that emits colored light and a green light emitting element group 23 composed of a plurality of organic EL elements 12G that emit green light. And a blue light emitting element group 24 including a plurality of organic EL elements 12B that emit blue light. The power supply circuit 21 includes a power supply unit 25 connected to the organic EL element group 20 and a control unit 26 that controls the power supply unit 25.

  In FIG. 7, the organic EL elements 12R, the organic EL elements 12G, and the organic EL elements 12B are juxtaposed in order to easily show the circuit configuration. Thru | or FIG. 6, the organic EL element 12R, the organic EL element 12G, and the organic EL element 12B are juxtaposed in order.

  Further, the anode 15 (not shown in FIG. 7) that is the anode of the organic EL element 12 is connected to the power supply unit 25, and the cathode 17 that is the cathode of the organic EL element 12 is grounded (that is, Connected to ground potential). The anodes (anodes 15) of the organic EL elements 12R are electrically connected. That is, the organic EL elements 12R are connected in parallel. Similarly, the anodes (anodes 15) of the organic EL elements 12G are electrically connected, and the organic EL elements 12G are connected in parallel. Further, the anodes (anodes 15) of the organic EL elements 12B are electrically connected, and the organic EL elements 12B are connected in parallel.

  The power supply unit 25 includes a plurality of n-channel MOS transistors 27 (hereinafter referred to as nMOSs 27). In the present embodiment, three nMOSs 27 are connected to one surface emitting panel 4. Specifically, one nMOS 27 is connected to the plurality of organic EL elements 12R (that is, the red light emitting element group 22), and one nMOS 27 is connected to the plurality of organic EL elements 12G (that is, the green light emitting element group 23). One nMOS 27 is connected to the plurality of organic EL elements 12B (that is, the blue light emitting element group 24). Hereinafter, the nMOS 27 connected to the organic EL element 12R is also referred to as an nMOS 27R, the nMOS 27 connected to the organic EL element 12G is also referred to as an nMOS 27G, and the nMOS 27 connected to the organic EL element 12B is also referred to as an nMOS 27B.

  As a more specific connection relationship, each gate of the nMOS 27 is connected to the control unit 26, each source of the nMOS 27 is connected to each anode of the organic EL element 12, and the drain of the nMOS 27 is connected to the external power supply voltage Vcc (that is, the above-mentioned). Power cable).

  The control unit 26 is composed of a general semiconductor integrated circuit, and controls characteristics such as color and luminance of light emitted from the surface light emitting panel 4. The control signal cable described above is connected to the control unit 26, and a control signal for controlling the power supply amount is supplied from the outside. The control unit 26 has a voltage source therein or a function of converting a voltage input from the external power supply voltage Vcc into a desired voltage. With such a configuration, the control unit 26 can apply different gate voltages to each nMOS 27 independently in accordance with the control signal described above, and can further change the gate voltage to be applied to each nMOS 27. Thereby, the electric power supplied to each of the organic EL elements 12R, 12G, and 12B is adjusted, and the amount of light emitted to each of the organic EL elements 12R, 12G, and 12B is adjusted, so that the light is emitted from the surface light emitting panel 4. It is possible to freely change characteristics such as color and brightness of the light. That is, for example, by adjusting the gate voltage applied to the gate of each nMOS 27, the color of light emitted from the surface light emitting panel 4 can be adjusted to various colors as well as white light.

  More specifically, when a gate voltage is applied only to the nMOS 27R, power is supplied only to the organic EL elements 12R constituting the red light emitting element group 22, and the light emitted from the surface light emitting panel 4 is red. Similarly, when the gate voltage is applied only to the nMOS 27G, power is supplied only to the organic EL element 12G constituting the green light emitting element group 23, and the light emitted from the surface light emitting panel 4 becomes green, and the gate voltage is applied only to the nMOS 27B. Is applied, power is supplied only to the organic EL elements 12B constituting the blue light emitting element group 24, and the light emitted from the surface light emitting panel 4 is blue. That is, from the surface light emitting panel 4, light of each emission color of the organic EL elements 12R, 12G, and 12B can be radiated independently. Further, it is possible to emit only two colors selected from the surface light emitting panel 4 by selecting two of the three light emitting element groups described above and supplying power.

(Method for manufacturing outdoor light-emitting building material panels)
Next, an example of a method for manufacturing the outdoor light-emitting building material panel 1 will be described with reference to FIGS. 8 to 12. 8 to 12 show sectional views in the respective manufacturing steps in the same manner as FIG.

  First, the building material panel 2 comprised from the various materials mentioned above is prepared. Since the building material panel 2 is appropriately manufactured by a conventionally known general manufacturing technique, a detailed description thereof is omitted here. Then, the through-hole 6 which penetrates the prepared building material panel 2 is formed using drilling tools, such as a cone (FIG. 8). In addition, the formation method of the through-hole 6 is not limited to the mechanical method using a cone etc., The chemical method by an etching etc. may be sufficient.

  Next, an epoxy adhesive is applied on one side of the building material panel 2 (hereinafter sometimes referred to as the “first side 2a”), and the first side is spread so as to be entirely covered. The resin layer 3 is formed (FIG. 9). At this time, the first resin layer 3 is formed so as not to cover the through hole 6, and the through hole 6 also penetrates the first resin layer 3.

  Next, the surface emitting panel 4 and the composite cable 7 are prepared, and the composite cable 7 is connected to a connector (not shown) of the surface emitting panel 4. Thereby, electric power can be supplied to the surface light emitting panel 4 from the outside. Then, the 1st resin layer 3 and the surface emitting panel 4 are made to oppose, and the surface emitting panel 4 is mounted on the 1st resin layer 3 (FIG. 10). At this time, the composite cable 7 is passed through the through-hole 6 and pulled out from the surface opposite to the first surface 2a of the building material panel 2 (hereinafter sometimes referred to as “second surface 2b”).

  Next, the 1st resin layer 3 is hardened by heating, and the bonding with the building material panel 2 and the surface emitting panel 4 through the 1st resin layer 3 is completed (FIG. 11). Thereby, the building material panel 2 and the surface emitting panel 4 will be firmly bonded together.

  Note that the building material panel 2 and the surface light emitting panel 4 may be bonded together by using another adhesive as described above, or a fixing member such as a double-sided tape or a screw. In addition, after this step, the inside of the through hole 6 may be filled with an epoxy resin or the like and sealed.

  Next, a liquid fluorine-based resin is applied on the surface of the surface-emitting panel 4 opposite to the building material panel 2 (hereinafter sometimes referred to as “first surface 4a”). Thereafter, the liquid fluororesin is thermally cured or ultraviolet cured by heating or ultraviolet irradiation. Thereby, the antifouling layer 5 is formed on the first surface 4a of the surface light emitting panel 4 (FIG. 12). The antifouling layer 5 is formed by sticking the antifouling layer 5 formed in the form of a sheet onto the first surface 4a of the surface emitting panel 4 via an adhesive layer such as an epoxy adhesive or a double-sided tape. Also good.

  The outdoor light-emitting building material panel 1 is completed through the above manufacturing steps.

  In addition, when using the outdoor light-emitting building material panel 1 outdoors, the temperature of the surface light-emitting panel 4 rises due to outside air temperature, direct sunlight, or the like, and the surface light-emitting panel 4 is more likely to be deteriorated. It is preferable to reduce the deterioration by providing a cooling member on the building material panel side. As the cooling member, for example, a refrigerant circulation device using water, a fluorine-based gas, or a Peltier element can be used.

  As described above, the outdoor light-emitting building material panel 1 according to the present embodiment guarantees long-term use in a severe outdoor environment and has good productivity. In particular, when the antifouling layer 5 contains a fluororesin, the antifouling layer 5 can be provided with high antifouling properties, while reducing costs and improving productivity.

<First Modification>
In the outdoor light-emitting building material panel 1 of the first embodiment described above, it has been described that the anti-smudge layer 5 can contain an ultraviolet absorber, but the anti-smudge layer 5 side of the surface light-emitting panel 4 (light-emitting surface). A separate ultraviolet absorbing layer may be provided on the side), and such an outdoor light-emitting building material panel will be described as a first modification with reference to FIG. FIG. 13 is a view showing a cross section of an outdoor light-emitting building material panel 31 according to this modification in the same manner as FIG. In addition, about the same structure as the light emission building material panel 1 for the outdoors of 1st Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 13, the outdoor light-emitting building material panel 31 according to the first modified example includes the building material panel 2, the first resin layer 3, the surface light-emitting panel 4, the antifouling layer 5, and the ultraviolet absorption layer 32. Yes. Specifically, the surface light-emitting panel 4 is attached to the building material panel 2 via the first resin layer 3, the ultraviolet absorption layer 32 is provided so as to cover the surface light-emitting panel 4, and the ultraviolet absorption layer 32 is covered. Thus, the antifouling layer 5 is provided. In addition, the outdoor light-emitting building material panel 31 is formed with a through hole 6 that penetrates the building material panel 2 and the first resin layer 3 and reaches the second surface 4 b of the surface light-emitting panel 4. A composite cable 7 is provided inside the through hole 6, and the composite cable 7 is connected to the exposed connector of the surface emitting panel 4.

  The ultraviolet absorbing layer 32 is made of, for example, a resin containing an ultraviolet absorber. Examples of the resin include the same material as the antifouling layer 5 of the first embodiment, such as a fluorine-based resin, and examples of the ultraviolet absorber include the ultraviolet absorber contained in the antifouling layer 5 of the first embodiment. The same material is mentioned. The resin constituting the ultraviolet absorbing layer 32 is not limited to a fluorine-based resin, and a known resin can be used as long as it is a transparent resin.

  As described above, by separately providing the ultraviolet absorbing layer 32, when the outdoor light-emitting building material panel 31 is used outdoors where the amount of irradiated ultraviolet rays is large, the ultraviolet absorbing layer 32 absorbs the ultraviolet rays so that the ultraviolet rays are absorbed. Can be prevented from reaching the surface light emitting panel 4, and deterioration of the surface light emitting panel 4 due to the ultraviolet rays can be prevented.

<Second Modification>
The outdoor light-emitting building material panel 1 of the first embodiment described above may further be provided with a light control layer capable of changing the light transmittance, and such an outdoor light-emitting building material panel is used as a second modification. This will be described with reference to FIG. FIG. 14 is a view showing the cross section of the outdoor light-emitting building material panel 41 according to this modification in the same manner as FIG. In addition, about the same structure as the light emission building material panel 1 for the outdoors of 1st Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 14, the outdoor light-emitting building material panel 41 according to the second modification includes the building material panel 2, the first resin layer 3, the surface light-emitting panel 4, the antifouling layer 5, and the light control layer 42. Yes. Specifically, the surface light emitting panel 4 is attached to the building material panel 2 via the first resin layer 3, the light control layer 42 is provided so as to cover the surface light emitting panel 4, and the light control layer 42 is covered. Thus, the antifouling layer 5 is provided. The outdoor light-emitting building material panel 41 is formed with a through-hole 6 that penetrates the building material panel 2 and the first resin layer 3 and reaches the second surface 4 b of the surface light-emitting panel 4. A composite cable 7 is provided inside the through hole 6, and the composite cable 7 is connected to the exposed connector of the surface emitting panel 4. In addition, when providing the light control layer 42 in this invention, the light control layer 42 should just be between the surface emitting panel 4 and the stain | pollution | contamination prevention layer 5, and the lamination | stacking order with other layers is not ask | required.

  For the light control layer 42, a polymer network type liquid crystal functioning as a so-called light control shutter can be used. The polymer network type liquid crystal becomes opaque when the electric field is not applied and the polymer is random and diffusely reflects light. On the other hand, the polymer is aligned when the electric field is applied. It becomes transparent. Therefore, in a bright situation such as daytime, the dimming layer 42 is made opaque to shield outside light without applying an electric field to the dimming layer 42, and in a dark situation such as nighttime, an electric field is applied to the dimming layer 42. It is possible to adopt a usage method in which the light control layer 42 is in a transparent state and the light emitted from the surface light emitting panel 4 is emitted to the outside.

  A dedicated cable (not shown) used for applying an electric field to the light control layer 42 is connected to the connector of the light control layer 42. Similar to the composite cable 7, the cable extends along a through hole that penetrates the building material panel 2, the first resin layer 3, and the surface light emitting panel 4.

  The light control layer 42 is not limited to the polymer network type liquid crystal described above, and may be, for example, an inorganic material such as tungsten oxide, or an electrochromic material made of an organic material such as polyaniline or Prussian blue. In particular, when the light control layer 42 made of an electrochromic material is used, the color and transparency can be reversibly controlled by applying a voltage. In addition, by using an electrochromic material having a memory property, it is possible to maintain the same color and transparency as when a voltage is applied even when voltage application is stopped. In addition, even in the non-light emitting state of the surface light emitting panel 4, various colors can be developed from the surface of the outdoor light emitting building material panel 41. Thereby, the outdoor light-emitting building material panel 41 can be provided with an excellent design. When light emitted from the surface light emitting panel 4 is emitted to the outside, a voltage may be applied to the light control layer 42 to make the light control layer 42 transparent.

  As described above, by providing the light control layer 42 between the surface light emitting panel 4 and the antifouling layer 5, the outdoor light emitting building material panel 41 has the antifouling property of the antifouling layer 5 and the light shielding of the light control layer 42. It will have the property (dimming). In other words, the light control layer 42 can freely shield the ultraviolet rays on the surface light emitting panel 4 and transmit light emitted from the surface light emitting panel 4.

  Instead of providing the light control layer 42 as described above, the photochromic material may be used as a UV absorber as in the first embodiment, but the light control layer 42 as described above is provided. On the other hand, the light emitted from the surface light emitting panel 4 can be emitted to the outside by applying a voltage to the light control layer 42 even during the irradiation of ultraviolet rays such as during the daytime. In other words, the light control layer 42 can freely shield the ultraviolet rays on the surface light emitting panel 4 and transmit light emitted from the surface light emitting panel 4.

<Third Modification>
In the first embodiment, the first modified example, and the second modified example described above, the side surfaces of the surface light emitting panel 4 and the antifouling layer 5 are exposed. A resin layer (hereinafter, referred to as “third resin layer 52” may be provided) so as to cover the resin layer so as to be distinguished from the resin layer of other portions. Such an outdoor light-emitting building material panel will be described as a third modification with reference to FIG. FIG. 15 is a view showing a cross section of an outdoor light-emitting building material panel 51 according to this modification in the same manner as FIG. In addition, about the same structure as the light emission building material panel 1 for the outdoors of 1st Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 15, the outdoor light-emitting building material panel 51 according to the third modification includes a building material panel 2, a first resin layer 3, a surface light-emitting panel 4, a dirt prevention layer 5, and a third resin layer 52. ing. Specifically, the surface light emitting panel 4 is attached to the building material panel 2 via the first resin layer 3, and the antifouling layer 5 is provided so as to cover the surface light emitting panel 4, and the first resin layer 3, A third resin layer 52 is provided so as to cover the side surfaces of the surface light emitting panel 4 and the antifouling layer 5. The outdoor light-emitting building material panel 51 is formed with a through-hole 6 that penetrates the building material panel 2 and the first resin layer 3 and reaches the second surface 4 b of the surface light-emitting panel 4. A composite cable 7 is provided inside the through hole 6, and the composite cable 7 is connected to the exposed connector of the surface emitting panel 4. In the outdoor light-emitting building material panel of the present invention, as shown in FIG. 15, the third resin layer 52 is provided so as to cover the side surfaces of the first resin layer 3, the surface light-emitting panel 4, and the antifouling layer 5. However, as long as the side surface of the surface light emitting panel 4 is covered with the third resin layer 52, the side surfaces of the first resin layer 3 and the surface light emitting panel 4 may not be covered.

  The 3rd resin layer 52 is comprised from resin members, such as an epoxy resin or a silicone resin, or a double-sided tape. As the third resin layer 52, a resin similar to the resin used in the first resin layer 3 can be used. In the outdoor light-emitting building material panel 51 according to the third modification, it is possible to suppress moisture absorption or the like from the outside of the surface light-emitting panel 4 by covering the side surface of the surface light-emitting panel 4 with the third resin layer 52. become. Further, the side surfaces of the first resin layer 3 and the antifouling layer 5 are also covered with the third resin layer 52 to suppress peeling and moisture absorption at the outer edge portion of the interface between the surface light emitting panel 4 and the antifouling layer 5. Is possible.

<Fourth Modification>
In the third modified example described above, the side surfaces of the first resin layer 3, the surface light emitting panel 4, and the antifouling layer 5 are covered with the third resin layer 52. However, the structure is limited to such a structure. Instead, a recess may be provided in the building material panel, and the first resin layer 3, the surface light emitting panel 4, and the antifouling layer 5 may be provided in the recess. Such an outdoor light-emitting building material panel will be described as a fourth modification with reference to FIG. FIG. 16 is a view showing a cross section of an outdoor light-emitting building material panel 61 according to this modification in the same manner as FIG. In addition, about the same structure as the light emission building material panel 1 for the outdoors of 1st Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 16, the outdoor light-emitting building material panel 61 according to the fourth modified example has a building material panel 62, a first resin layer 3, a surface light-emitting panel 4, and a dirt prevention layer 5. The building material panel 62 has a recess 62b on one surface 62a side. And in the recessed part 62b of the building material panel 62, the 1st resin layer 3, the surface emitting panel 4, and the stain | pollution | contamination prevention layer 5 are arrange | positioned. Specifically, the surface light emitting panel 4 is attached to the bottom surface of the recess 62 b of the building material panel 62 via the first resin layer 3, and the antifouling layer 5 is provided so as to cover the surface light emitting panel 4. The side surfaces of the first resin layer 3, the surface light emitting panel 4, and the antifouling layer 5 are in contact with the side surfaces of the recess 62 b of the building material panel 62. That is, the side surfaces of the first resin layer 3, the surface light emitting panel 4, and the stain prevention layer 5 are not exposed, and the first resin layer 3, the surface light emission panel 4, and the stain prevention layer 5 are inserted into the recess 62b. It has a structure.

  The outdoor light-emitting building material panel 61 is formed with a through-hole 6 that penetrates the building material panel 62 and the first resin layer 3 and reaches the second surface 4 b of the surface light-emitting panel 4. A composite cable 7 is provided inside the through hole 6, and the composite cable 7 is connected to the exposed connector of the surface emitting panel 4.

  By setting it as the structure mentioned above, in the outdoor light-emitting building material panel 61, it becomes possible to acquire the same effect as the case where the 3rd resin layer 52 is provided in the outdoor light-emitting building material panel 51 mentioned above. In addition, in the outdoor light-emitting building material panel of the present invention, as shown in FIG. 16, a structure in which the first resin layer 3, the surface light-emitting panel 4, and the antifouling layer 5 are inserted into the recess 62 b of the building material panel 62. However, if the side surface of the surface light emitting panel 4 is structured not to be exposed by being fitted into the recess 62b of the building material panel 62, the first resin layer 3 and the surface light emitting panel 4 are the building material panel 62. It does not need to be inserted in the recess 62b.

  Moreover, in the structure mentioned above, the adhesiveness of the surface emitting panel 4 and the building material panel 62 improves. Further, as shown in FIG. 16, the outdoor light emitting building material panel 61 is formed by aligning the surface of the antifouling layer 5 opposite to the surface light emitting panel 4 and the first surface 62a of the building material panel 62 on the same plane. As a result, the design will be improved.

<Fifth Modification>
In the example and the modification described above, the bonding of the building material panel 2 or the building material panel 62 and the surface light emitting panel 4 and the bonding of the surface light emitting panel 4 and the antifouling layer 5 are performed in separate steps. However, these bonding steps may be collectively performed by a vacuum heating lamination method. An outdoor light-emitting building material panel formed by using such a manufacturing method will be described as a fifth embodiment with reference to FIG. 17 and outdoor using a vacuum heating laminating method with reference to FIGS. A method for manufacturing a light-emitting building material panel will be described. FIG. 17 is a view showing a cross section of an outdoor light-emitting building material panel 71 according to this modification in the same manner as FIG. Moreover, FIG. 18 thru | or FIG. 21 is sectional drawing in each manufacturing process of the light-emitting building material panel 71 for outdoor concerning this modification. In addition, about the same structure as the light emission building material panel 1 for the outdoors of 1st Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 17, the outdoor light-emitting building material panel 71 according to the fifth modified example is a building material panel 2 and a resin layer (hereinafter referred to as a “fourth resin layer 72” in order to distinguish it from the resin layers of other parts). ), The surface emitting panel 4 and the antifouling layer 5. Specifically, the surface-emitting panel 4 having all surfaces covered by the fourth resin layer 72 is attached to the building material panel 2 via the fourth resin layer 72. Moreover, the dirt prevention layer 5 is affixed on the surface of the fourth resin layer 72 opposite to the surface in contact with the building material panel 2. That is, in the outdoor light emitting building material panel 71, the building material panel 2 and the surface light emitting panel 4 are bonded together by the fourth resin layer 72, and the surface light emitting panel 4 and the antifouling layer 5 are also bonded together by the fourth resin layer 72. Yes. Here, the fourth resin layer 72 is in a state of having both the first resin layer 3 and the third resin layer 52 described above. Furthermore, it is also a resin layer between the surface light emitting panel 4 and the antifouling layer 5.

  The outdoor light emitting building material panel 71 is formed with a through hole 6 that penetrates the building material panel 2 and the fourth resin layer 72 and reaches the second surface 4 b of the surface light emitting panel 4. A composite cable 7 is provided inside the through hole 6, and the composite cable 7 is connected to the exposed connector of the surface emitting panel 4.

  The fourth resin layer 72 is made of, for example, an ethylene-vinyl acetate copolymer (EVA) or a polyvinyl butyral (PVB) resin. The material of the fourth resin layer 72 is not limited to EVA or PVB resin, but the building material panel 2 and the surface light emitting panel 4 and the surface light emitting panel 4 and the antifouling layer 5 can be bonded together by a vacuum heating lamination method. Other known materials can be used.

  Next, an example of a method for manufacturing the outdoor light-emitting building material panel 71 will be described.

  First, the building material panel 2 comprised from the various materials mentioned above is prepared (FIG. 18). Since the building material panel 2 is appropriately manufactured by a conventionally known general manufacturing technique, the detailed description thereof is omitted here.

  Next, on the building material panel 2, a resin sheet made of EVA (to be distinguished from other resin sheets, hereinafter referred to as "first resin sheet 72a"), a surface light emitting panel 4, a resin sheet made of EVA (others) In order to distinguish them from the resin sheet, the “second resin sheet 72b”) and the antifouling layer 5 are sequentially laminated (FIG. 19). At this time, a protective mask member (not shown) is formed on the connector so that the first resin sheet 72b does not contact the connector (not shown) of the surface emitting panel 4. As the first resin sheet 72a and the second resin sheet 72b, sheets having a larger area than the surface light emitting panel 4 and a thickness of 0.4 to 1 mm are used. Further, when laminating, the surface emitting panel 4 is sandwiched between the first resin sheet 72a and the second resin sheet 72b so as not to be exposed to the outside from these sheets.

  Next, using a vacuum heating laminating apparatus, the building material panel 2 in which the first resin sheet 72a, the surface light emitting panel 4, the second resin sheet 72b, and the antifouling layer 5 are laminated is heated and pressed under reduced pressure. Laminate by processing. Thereby, the 1st resin sheet 72a and the 2nd resin sheet 72b fuse | melt, the building material panel 2 and the surface emitting panel 4 are bonded together by the 1st resin sheet 72a, and it becomes dirty with the surface emitting panel 4 by the 2nd resin sheet 72b. The prevention layer 5 is bonded together, and the first resin sheet 72a and the second resin sheet 72b are fused and integrated into a fourth resin layer 72 (FIG. 20). By this vacuum heating laminating method, the building material panel 2, the surface light emitting panel 4, and the antifouling layer 5 can be integrally formed, so that the outdoor light emitting building material panel 71 can be obtained with high productivity.

  Next, the through-hole 6 penetrating the building material panel 2 and the fourth resin layer 72 on the building material panel 2 side is formed using a drilling tool such as a cone. At this time, the protective mask member described above is also removed with a cone or the like, and the connector of the surface light emitting panel 2 is exposed. The method for forming the through hole 6 is not limited to a mechanical method using a cone or the like, and may be a chemical method using etching or the like. Subsequently, the composite cable 7 is connected to the connector of the surface emitting panel 4 exposed by the through hole 6 so that electric power can be supplied to the surface emitting panel 4 from the outside (FIG. 21). In addition, after providing the composite cable 7 in the through hole 6, the inside of the through hole 6 may be filled with an epoxy resin or the like to be sealed.

  The outdoor light-emitting building material panel 71 is completed through the above manufacturing process.

  In the outdoor light-emitting building material panel 71 manufactured in such a process, the surface light-emitting panel 4 is covered by the fourth resin layer 72, that is, by using a vacuum heating laminating method, the surface light-emitting panel. Since 4 is sealed by the fourth resin layer 72, it is possible to prevent moisture and the like from penetrating the surface light emitting panel 4 from the outside. As described above, the outdoor light-emitting building material panel 71 having excellent water resistance is effectively used even in an environment where it is exposed to rain, dust, or the like, such as outdoors.

  In addition, the 4th resin layer in the light emission building material panel 71 for the outdoors of this modification has the above-mentioned 1st-3rd resin layer. That is, the first resin sheet 72a is a first resin layer, the second resin sheet 72b is a second resin layer, and the end portions of the first resin sheet 72a and the second resin sheet 72b are the third resin layer. Become.

  In addition, the structure of the outdoor light-emitting building material panel in the first embodiment and the first to fifth modifications described above can be combined as appropriate.

<Use of the light-emitting building material panel of the present invention>
The outdoor light-emitting building material panel of the present invention can be suitably used as an outdoor structure such as a building wall, ceiling, or floor. In addition to night illumination, it can also be used to display emergency exits and emergency routes. A design or a pattern can also be expressed by arranging a plurality of outdoor light-emitting building material panels of the present invention. Further, such a pattern can be changed with time, for example, a simple clock can be displayed. In particular, the use of outdoor light-emitting building material panels with variable emission colors greatly expands the range of design or pattern expression.

  The outdoor light-emitting building material panel of the present invention can be used in combination with a solar cell panel. Moreover, you may incorporate a solar cell in the light-emitting building material panel of this invention. In such a case, the solar cell may be attached to the building material panel together with the surface emitting panel by a vacuum heating lamination method.

  The light emitting system according to the present invention can be suitably used for outdoor structures such as building walls, ceilings, and floors. Moreover, the light-emitting system according to the present invention can be used as an emergency exit, an emergency route display, and the like in addition to night illumination. A design or a pattern can also be expressed by arranging a plurality of outdoor light-emitting building material panels of the present invention.

DESCRIPTION OF SYMBOLS 1,31,41,51,61,71 Outdoor light emission building material panel 2,62 Building material panel 3 1st resin layer 4 Surface light emission panel 5 Anti-stain layer 6 Through-hole 7 Composite cable 11 Transparent substrate 12, 12R, 12G, 12B Organic EL element 13 Light diffusion layer 14 Sealing layer 15, 15R, 15G, 15B Anode 16, 16R, 16G, 16B Organic layer 17, 17R, 17G, 17B Cathode 20 Organic EL element group 21 Power supply circuit 22 Red light emitting element group 23 Green light emitting element group 24 Blue light emitting element group 25 Power supply unit 26 Control unit 27, 27R, 27G, 27B n-channel MOS transistor 32 Ultraviolet absorption layer 42 Light control layer 52 Third resin layer 72 Fourth resin layer

Claims (11)

Building material panels;
A surface-emitting panel that has a plurality of light-emitting elements, is formed on one surface side of the building material panel, and emits light in a uniform color as a whole surface;
An outdoor light-emitting building material panel, comprising a stain prevention layer formed on an outermost surface opposite to the building material panel with respect to the surface light-emitting panel.   The outdoor light-emitting building material panel according to claim 1, wherein the antifouling layer contains a fluorine-based resin.   The outdoor light-emitting building material panel according to claim 1, wherein the antifouling layer contains a photocatalyst.   The outdoor light-emitting building material panel according to any one of claims 1 to 3, further comprising an ultraviolet absorbing layer on the antifouling layer side with respect to the surface light emitting panel.   5. The outdoor light-emitting building material panel according to claim 1, further comprising a light control layer on the dirt prevention layer side with respect to the surface light-emitting panel.   The outdoor light-emitting building material panel according to any one of claims 1 to 5, further comprising a first resin layer between the building material panel and the surface light-emitting panel.   The outdoor light-emitting building material panel according to any one of claims 1 to 6, further comprising a second resin layer between the surface light-emitting panel and the antifouling layer.   The outdoor light-emitting building material panel according to any one of claims 1 to 7, further comprising a third resin layer at an end of the surface light-emitting panel.   The outdoor light-emitting building material panel according to any one of claims 1 to 8, wherein the light-emitting element is an organic electroluminescence element.   The light emitting building material panel for outdoor use according to any one of claims 1 to 9, wherein a light emission color of the surface light emitting panel is variable. Building material panels;
A surface-emitting panel that has a plurality of light-emitting elements, is formed on one surface side of the building material panel, and emits light in a uniform color as a whole surface;
With respect to the surface emitting panel, having a dirt prevention layer formed on the outermost surface opposite to the building material panel,
The manufacturing method of the outdoor light-emitting building material panel characterized by integrally forming the said building material panel, the said surface emitting panel, and the said stain | pollution | contamination prevention layer by the vacuum heating laminating method using the resin layer.

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