JP5167544B2 - Light emitting display body for signboard, light emitting display body system for signboard having emergency light function, and lighting method thereof - Google Patents

Description

  The present invention relates to a light emitting display for internally illuminated signboards used for outdoor advertising signboards and indoor advertising signboards, and a lighting method thereof. More specifically, the present invention is used indoors and outdoors and is internally illuminated at night. Advertising signboards, shop signboards, storefront signs, signboards for various facilities, and laminates used for art signboards, and an emergency light function system at the time of a power failure for these signboard applications and its emergency light illumination method It is about.

  On the rooftops of commercial facilities such as department stores and supermarkets, corporate buildings and factories are equipped with large signboards that can also be used as landmarks from a distance. Yes. In addition, convenience stores, fast food stores, taverns, karaoke stores, gas stations, financial ATMs, and other service industry stores use design-style store signs and storefront signs outdoors to make the store's presence stand out. The mainstream is a system that displays internally. These interior lighting signs are useful for night lighting as well as the display function of the shop name and advertisements. Especially in locations such as residential areas, they play a role in local crime prevention and are indispensable for a 24-hour lifestyle. It has become a non-existent existence. On the other hand, the walls of the stations, subway stations, underground shopping streets and underground communication passages used by many people all day are filled with various advertising signs as places with high advertising effectiveness. These indoor advertising billboards are indispensable for underground spaces such as subway stations, underground shopping streets, underground passageways, etc., because they can also be used for daylighting and nighttime illuminations. Even in commercial gathering facilities such as shopping malls, hotels and inns, and various public facilities, display at night such as shop name display, hall information display, and evacuation guidance is indispensable.

  As a general-purpose example of these advertising signboards, printing is performed on a light diffusing acrylic resin plate or the like, and a gourmet effect is obtained by a fluorescent lamp installed on the back side. In addition, for large signboard applications installed in buildings, high flameproof performance and impact strength are required. For example, a fiber made of polyester fiber fabric as a base material and laminated on both sides with a white soft vinyl chloride resin film A reinforced flexible membrane material is used for an internally-illuminated signboard, and a flexible membrane material made of glass fiber fabric is used particularly in applications that require non-combustibility. In these flexible membrane materials, it is easy to apply known printing methods such as screen printing, gravure printing, ink jet printing, transfer printing, etc. Instead of acrylic signboards, it is used for various types of internally illuminated signboards.

  These internally illuminated signboards are concentrating on the streets and are useful for night lighting and security, but nowadays these internally illuminated signboards can also be used as signposts for evacuation guidance in the event of a large-scale blackout. Proposed. Battery power generation is preferred as an emergency light source in the event of a power outage. However, incorporating a battery power generator into an internally illuminated signboard system not only increases the weight and cost of the internally illuminated signboard system, but also annoying regular maintenance. In addition, it was not very popular. On the other hand, phosphorescent pigments (nocturnal paint) have been known for a long time as light-emitting materials that are power-free and maintenance-free. Phosphorescent pigments are widely used in emergency exit evacuation guide plates, and recently, lighting fixtures that illuminate the interior of a fluorescent lamp by storing phosphorescent light immediately after extinguishing the light are widely used. However, phosphorescent pigments have a light emission principle in which the light emission luminance decays with time, so even if a light storage function is applied to an internally illuminated signboard, it is necessary to maintain the light emission luminance stably in order to use it as an evacuation guide signpost during a power outage Met.

  For example, in Japanese Patent Application Laid-Open No. 2005-294105 (Patent Document 1), as an emergency product provided with a phosphorescent function so that visibility can be ensured for a while in the event of a power failure, the surface gloss is excellent, transmission unevenness is small, and the remaining A panel for lighting fixtures having excellent light luminance has been proposed. Japanese Unexamined Patent Application Publication No. 2008-180989 (Patent Document 2) proposes an internally illuminated sign provided with a surface light emitter having a phosphorescent plate behind the display unit. However, this panel or internally illuminated sign has a practical problem in that the emission luminance decreases with time. In JP 2008-154124 A (Patent Document 3), a blackout lamp and a phosphorescent resin are arranged, and the blackout lamp and the phosphorescent resin shine while complementing each other so that the illuminance at the time of the blackout can be secured for a long time. A lighting device for power failure has been proposed. However, since the phosphorescent light emission is fantastic blue to green phosphorescent light emission, there is a problem that the illumination environment is not constant in the complementary method in which the power-off lamp lighting and the phosphorescent light emission are alternately performed. In the display body using the phosphorescent material as in Patent Documents 1 to 3, since the emergency light illumination color is blue to green phosphorescent light emission that has left the world, there is a risk of fear of panic psychology especially during disasters. It had been. Therefore, in order to utilize the internally-lit signboard overflowing in the city as an emergency light in the event of a large-scale power outage or as a signpost for evacuation guidance, it was desired that the emergency light emission color be white fluorescent, but phosphorescence No laminate has been proposed for signboards that can emit white fluorescent light with an internally illuminated signboard using a luminescent substance and can sustain light emission for a long time.

JP 2005-294105 A JP 2008-180989 A JP 2008-154124 A

  The present invention is a laminate for internally illuminated signboards that is suitable for use in outdoor advertising signs and indoor advertising signs, and at the time of a power failure, expresses a lighting function using a phosphorescent material, and yet uses the phosphorescent material, while still An object of the present invention is to provide a light-emitting display for a signboard that emits dazzling illumination light close to that of a white fluorescent lamp and is sustainable for a long time, its illumination system, and further its illumination method.

  In order to solve the above-mentioned problems, the light emitting display for signboard of the present invention is 1). Using a non-colored fiber fabric as a base material, a light-transmitting light-transmitting resin layer is provided on one or more sides, and a phosphorescent light emitting compound containing a fluorescent whitening compound between the fiber fabric and the light-transmitting light-transmitting resin layer As a light-diffusing laminate comprising a layer, it has a display layer on one side or more, 2). It is set as the illumination system which arranged the light emitting diode facing the edge part cross section of the light diffusable laminated body as described in 1). The near ultraviolet light emitting diodes arranged opposite to the end cross section of the light diffusing laminate described in 1) are caused to emit light from the battery and irradiate the end cross section of the light transmissive translucent resin layer. By emitting near ultraviolet rays from the entire surface of the light resin layer and irradiating the entire surface of the phosphorescent light emitting layer, a laminate suitable for a light emitting display for signboards having an emergency light function capable of emitting white fluorescent light can be obtained. As a result, the present invention has been completed.

That is, the light-emitting display for signboard of the present invention has a non-colored fiber cloth as a base material, a light-transmitting light-transmitting resin layer is provided on one or more sides of the fiber cloth, and the fiber cloth and the light-transmitting light-transmitting transparent body are provided. A light diffusing laminate comprising at least one phosphorescent light emitting layer provided between the light resin layer, the light diffusing laminate having a display layer on one side or more, and the light The propagating translucent resin layer has a light diffuse reflection pattern and / or light diffuse reflection particles, and the phosphorescent light emitting layer has colored phosphorescent phosphorescent phosphorescent particles and maximum absorption in a wavelength region of 400 to 450 nm. It is preferable to include a fluorescent whitening compound in combination. In the signboard light-emitting display body, the fluorescent whitening compound is an oxazole derivative, pyrazoline derivative, stilbene disulfonic acid derivative, styryl biphenylene derivative, benzimidazole derivative, triazole derivative, carbazole derivative, pyridine derivative, coumarin derivative, naphthalic acid derivative. And at least one selected from hydroquinolinone derivatives, imidazolone derivatives, spiro compound derivatives, and heterocyclic compound-substituted pyrene derivatives. In the light emitting display for signboard of the present invention, it is preferable that the phosphorescent light emitting layer includes the phosphorescent particles and the fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5. The light-emitting display body system for signboards having an emergency light function of the present invention has an uncolored fiber cloth as a base material, a light-transmitting translucent resin layer is provided on one or more sides of the fiber cloth, and the fiber cloth In the light diffusing laminate in which at least one phosphorescent light emitting layer is provided between the light transmissive translucent resin layer, the light diffusing laminate has a display layer on one side or more, and The light-transmitting translucent resin layer has a light diffuse reflection pattern and / or light diffuse reflection particles, and the phosphorescent light emitting layer has a maximum absorption in a wavelength region of 400 to 450 nm with colored phosphorescent phosphorescent particles. It is preferable that the light-emitting diodes are arranged so as to face the end cross section of the light diffusing laminate. In the light emitting display system for signboard having an emergency light function of the present invention, the phosphorescent light emitting layer uses the phosphorescent particles and the fluorescent whitening compound in a mass ratio of 100: 0.01 to 100: 5. It is preferable to include. The emergency light illumination method for a light-emitting display for signboard of the present invention comprises a light-transmitting translucent resin layer having a light irregular reflection pattern and / or light irregular reflection particles on one side or more of a non-colored fiber fabric as a base material. A light diffusive laminate provided with at least one light-storing light emitting layer between the fiber fabric and the light-transmitting translucent resin layer, wherein the light diffusive laminate is on one side or more. A display layer, and the phosphorescent light emitting layer is a combination of colored phosphorescent phosphorescent phosphorescent particles and a fluorescent whitening compound having a maximum absorption in a wavelength region of 400 to 450 nm , and further the light diffusibility A near-ultraviolet light-emitting diode arranged opposite to the end cross section of the laminate emits light from the battery, and irradiates the end cross section of the light-transmitting light-transmitting resin layer, so that the light-transmitting light-transmitting resin layer is exposed from the entire surface. UV radiation is emitted into the surface. Therefore, it is preferable to the photoluminescence layer over the entire surface is white fluorescence. In the emergency lamp lighting method for a sign display according to the present invention, the phosphorescent light emitting layer includes the phosphorescent particles and the fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5. It is preferable.

  According to the light emitting display for signboard (system) of the present invention of the present invention, it exhibits an excellent internal lighting effect, usually as an outdoor advertising billboard and an indoor advertising billboard, and the auxiliary use of a light emitting diode by a battery in the event of an unexpected power failure Provides a light-emitting display for signboard and its system that can quickly activate the illumination function by phosphorescence emission of phosphorescent material and can emit dazzling illumination light close to white fluorescent light for a long time with power saving can do. Therefore, the light-emitting display body (system) for signboards of the present invention can be used in commercial facilities such as department stores and supermarkets, convenience stores, fast food stores, taverns, karaoke stores, gas stations, financial ATMs, and other service industry stores. Can be used in underground spaces such as subway stations, underground malls, underground passageways, commercial gathering facilities such as shopping malls, hotels and inns, and various public facilities, in the event of a large-scale blackout due to an unforeseen disaster The light emitting display for signboard itself can be used as an emergency light, and can also be used as a signpost for evacuation guidance.

  The light-emitting display for signboard of the present invention has a light-transmitting light-transmitting resin layer on one side or more of a colorless fiber cloth as a base material, and between the fiber cloth and the light-transmitting light-transmitting resin layer. A light-diffusing laminated body provided with a phosphorescent light-emitting layer containing a fluorescent whitening compound, and a light-emitting display system in which light-emitting diodes are arranged at the end. The light-transmitting translucent resin layer used in the present invention has a thickness 1 made of acrylic resin, methacrylate resin, polycarbonate resin, polystyrene resin, polyester resin (PET / PBT), vinyl ester resin, semi-rigid polyvinyl chloride resin, or the like. ~ 15mm, especially 4-10mm thick transparent or translucent thermoplastic resin plate, or resin plate containing light diffusing fine particles in the above thermoplastic resin, white filler (including flame retardant powder) ) Containing a light diffusing resin plate. In the present invention, an acrylic resin (methacrylate resin) plate, and a synthetic resin plate made of a polycarbonate resin and a semi-rigid polyvinyl chloride resin are most preferable.

  The light-transmitting translucent resin layer used in the present invention is composed of soft polyvinyl chloride resin, polyethylene resin, ethylene-vinyl acetate copolymer resin, polypropylene resin, polyolefin elastomer, polyester elastomer, styrene elastomer, polyurethane elastomer. , A thickness obtained from a thermoplastic resin such as a fluorinated copolymer resin, a film of 0.1 to 0.5 mm, or a sheet of 0.5 to 2.0 mm, and if necessary, an organic pigment or inorganic Light or diffusive film containing a small amount of a pigment, translucent or translucent film or sheet, or film or sheet in which light diffusing fine particles are blended with the above thermoplastic resin, white filler (including flame retardant powder) It may be a film or sheet.

The fiber fabric used as the base material for the light emitting display of the present invention is polyester fiber (polyethylene terephthalate fiber / polybutylene terephthalate fiber / polyethylene naphthalate fiber), polypropylene fiber, nylon fiber, vinylon fiber, alumina fiber, silica fiber, Monofilament yarns such as silica / alumina fibers and glass fibers, or multifilament yarns can be used. These yarns are 100 to 1000 denier, and are obtained by entanglement of these yarns. It is a woven or knitted fabric with a non-sealed structure. Monofilament yarns and multifilament yarns constituting these fiber fabrics are preferably uncolored (yarns that are not colored with a dye / pigment) so as not to impair the light transmittance. From the viewpoint of imparting incombustibility, the light-diffusing laminate used in the light-emitting display for signboard of the present invention has a porosity of 5% or less due to inorganic fibers such as alumina fibers, silica fibers, silica / alumina fibers, glass fibers, and a weight per unit area. It is preferable to use 150 to 500 g / m ² of non-blank plain woven fabric for the fiber fabric.

The light-emitting display for signboard according to the present invention is a glass fiber woven fabric (non-sealed plain weave having a basis weight of 200 to 300 g / m ² and a porosity of 1% or less) that is particularly excellent in light transmittance. A phosphorescent light emitting layer is provided over the surface, and a light transmitting translucent resin layer made of soft polyvinyl chloride resin, soft fluororesin, or silicone resin of 0.1 to 0.5 mm is formed on the phosphorescent light emitting layer with an adhesive, or by laminating by means of heat lamination, the thickness of 0.5 to 2.0 mm, it is preferred for non-combustibility of the light diffusing laminate having a basis weight of mass 400~2000g / ^{m 2.} In particular, in a soft polyvinyl chloride resin layer, known PVC compounding agents such as plasticizers, pigments, stabilizers, fillers, flame retardants, and weathering stabilizers can be optionally added. Contains flame retardants such as molybdenum, aluminum hydroxide, halogenated organic compounds, condensed phosphate compounds, etc., and the resulting light diffusing laminate (light emitting display for signboards) is a building standard method combustion test (as defined in ASTM-E1354). The corn calorimeter test method is preferably non-flammable. The light transmittance of the light diffusing laminate (light emitting display for signboard) is 25 to 90%, preferably 50 to 90% according to the JIS standard Z8722 test method. If the light transmittance is less than 25%, the emergency lighting function may be unsatisfactory in a dark environment.

The light diffusing laminate used in the light emitting display for signboard of the present invention has an acrylic resin, methacrylate resin, polycarbonate resin, polystyrene resin, polyester resin (PET / PBT), vinyl on one or more sides of the above-mentioned fiber fabric. It is also possible to use a laminate obtained by adhering and laminating a light-transmitting translucent resin layer having a thickness of 1 to 15 mm, particularly 4 to 10 mm, of an ester resin and a semi-hard polyvinyl chloride resin. In particular, a non-blank plain woven fabric having a porosity of 5% or less and a basis weight of 150 to 500 g / m ² due to inorganic fibers such as alumina fiber, silica fiber, silica / alumina fiber, and glass fiber is used as the fiber fabric. By providing a phosphorescent light emitting layer as described above and providing a light-transmitting translucent resin layer made of semi-rigid polyvinyl chloride resin on this phosphorescent light emitting layer, a light emitting display for signboards having excellent flame resistance and flame penetration is obtained. be able to.

  In the light emitting display for signboard of the present invention, the phosphorescent light emitting layer is 1). Fiber fabric / light-storing light-emitting layer / light-transmitting translucent resin layer, 2). Light-transmitting light-transmitting resin layer / fiber fabric / light-accumulating light-emitting layer / light-transmitting light-transmitting resin layer, 3). It can be provided as any aspect of the light-transmitting light-transmitting resin layer / light-accumulating light-emitting layer / fiber fabric / light-accumulating light-emitting layer / light-transmitting light-transmitting light-transmitting resin layer. These phosphorescent light-emitting layers 1) to 3) have a thickness of 0.01 to 2.0 mm, preferably 0.05 to 0.5 mm, film, sheet, Alternatively, it is a coating film (solidified product / cured product) made of a coating composition comprising a thermoplastic resin solution. Examples of the thermoplastic resin include soft polyvinyl chloride resin, polyethylene resin, ethylene-vinyl acetate copolymer resin, polypropylene resin, polyolefin elastomer, polyester elastomer, styrene elastomer, polyurethane elastomer, and fluorine copolymer resin. . The phosphorescent material contained in the phosphorescent layer is 20 to 60% by mass, and depending on the thickness setting of the phosphorescent layer, the concentration of the phosphorescent material contained in the unit area is high for a thin film. In addition, the emission luminance can be set as appropriate for a thick film with a slightly lower concentration.

As the phosphorescent particles, known phosphorescent phosphors (phosphorescent pigments / luminous pigments), and green phosphorescent color type particles and blue phosphorescent color type particles can be used. As a blue phosphorescent color type, 0.001 to 10 mol% of a divalent metal aluminate (for example, strontium aluminate) base crystal was added to a divalent metal using a rare earth element as an activator. Particles. Divalent metals include magnesium, calcium, strontium, barium, zinc, and rare earth elements include cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, etc. , and the _{specifically, SrAl 2 O 4: Eu,} Dy, Sr 4 Al 14 O 25: Eu, Dy, CaAl 2 O 4: Eu, Nd, SrAl 14 B 14 O 25: Eu, illustrate Dy or the like In particular, phosphorescent phosphor particles based on alumina strontium oxide (SrAl ₂ O ₄ : Eu, Dy) are preferable. Further, calcium sulfide / bismuth system [CaS: Bi (purple blue light emission)], calcium sulfide / strontium / bismuth system [CaSrS: Bi (blue light emission)], zinc sulfide / copper system [ZnS: Cu (green light emission)], Sulfide-based phosphorescent phosphors such as zinc sulfide / cadmium / copper-based [ZnCdS: Cu (yellow to orange light emission)] can also be used.

  Moreover, in the light emission display body for signboards of this invention, in order to make the luminous brightness of a luminous luminous layer higher, it is preferable that the luminous phosphor layer contains a fluorescent whitening compound in combination with luminous phosphor particles. By including a fluorescent whitening compound in the phosphorescent light emitting layer, the luminance is increased synergistically, and at the same time, the phosphorescent emission color of the phosphorescent particle itself is green or blue, but the phosphorescent light is stored depending on the auxiliary irradiation conditions of near ultraviolet rays. The light emitting layer can be made to emit white fluorescent light. The fluorescent whitening compound is a colorless to pale yellow organic compound that has maximum absorption on the near ultraviolet side (wavelength: 400 to 450 nm) and emits purple-blue to blue fluorescence, and these are, for example, 2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene, benzoxazole derivatives such as 4,4′-bis (benzoxazol-2-yl) stilbene, pyrazoline derivatives such as 1,3-diallyl-pyrazoline, Stilbene disulfonic acid derivatives such as 4,4′-diamino-2,2′-stilbene disulfonic acid, styryl biphenylene derivatives, benzimidazole derivatives, triazole derivatives, carbazole derivatives, pyridine derivatives, coumarin derivatives, naphthalic acid derivatives, hydroquinolinone derivatives , Imidazolone derivatives, spiro compound derivatives, heterocyclic compound substitution Although it is a pyrene derivative etc., especially a benzoxazole derivative is excellent in the synergistic effect of phosphorescence emission, and preferable. The phosphorescent light emitting layer preferably contains phosphorescent particles and fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5, and the amount of fluorescent whitening compound contained in the phosphorescent light emitting layer is 0.01 to 1% by mass, particularly 0.05 to 0.3% by mass. When the amount is less than 0.01% by mass, not only sufficient luminance for emergency lighting can be obtained, but also the phosphorescent emission color may remain blue or green. If it exceeds 1% by weight, the fluorescent whitening compound may bleed and the surface appearance of the light emitting display for signboard may be clouded.

  In the light-emitting display for signboard of the present invention, the light-transmitting translucent resin layer has a light diffuse reflection pattern or light diffuse reflection particles, or has a light diffuse reflection pattern and light diffuse reflection particles, thereby improving the light emission luminance of the phosphorescent light-emitting layer. From the viewpoint of Light that has entered from the end cross section of the light-transmitting translucent resin layer is scattered in the surface direction of the light-transmitting translucent resin layer due to the presence of the light diffuse reflection pattern or light diffuse reflection particles, so that the light diffusing laminate is surface emitting. To do. The diffuse light reflection pattern is a dot-like pattern that is provided on the light-transmitting light-transmitting resin layer surface side between the phosphorescent light-emitting layer and the light-transmitting light-transmitting resin layer. And a light-transmitting paint (ink) by a known printing method such as screen printing, gravure printing, ink jet printing, or embossing to form three-dimensional unevenness. The paint having light reflectivity and light transmissivity is a clear paint containing a resin used for the light-transmitting translucent resin layer and a thermoplastic resin having a refractive index difference of 0.1 or more as a binder, silica, alumina, zirconia, It is a translucent paint containing inorganic pigment particles such as zinc oxide, titanium oxide, calcium carbonate, barium sulfate, and synthetic mica. The dots are not particularly limited in shape, such as circles, ellipses, squares, hexagons, stars, amoeba, and combinations thereof. For example, in the case of a circular dot, all the dots may have the same size (same area), or the dot size (area) may be increased stepwise. In the light emitting display for signboard of the present invention, the dots constituting the light diffuse reflection pattern may be arranged so that the dot size gradually increases from the end of the light-transmitting translucent resin layer toward the center. Is preferable from the viewpoints of light emitting properties and surface light emission. Also, when arranging dots of the same size (area), good light propagation and surface light emission can be achieved by increasing the dot arrangement density from the edge to the center of the light-transmitting translucent resin layer. Can be obtained. The occupancy ratio of the light diffuse reflection pattern area (total area of all dots) in the light-transmitting translucent resin layer is 25 to 75%, provided that the light transmittance of the phosphorescent light emitting layer is not attenuated by 30% or more. It is preferable to set it as 40 to 60%.

  Further, the light-transmitting light-transmitting resin layer may contain light diffuse reflection particles dispersed throughout the light-transmitting light-transmitting resin layer without disposing a dot pattern. The light diffusely reflecting particles are silica, alumina, zirconia, zinc oxide, titanium oxide, calcium carbonate, barium sulfate and other inorganic pigments having a particle size of 0.01 to 3 μm, and montmorillonite, smectite, and fluorine mica having a particle size of 0.1 to 30 μm. 1 type or more selected from mineral compounds such as silicone resin, (meth) acrylic resin, styrene resin, benzoguanamine resin and other resin beads having a particle diameter of 10 to 50 μm, and (hollow) glass beads. The phosphorescent light emitting layer may be used in a content of 1 to 50% by mass, preferably 3 to 25% by mass with respect to the light-transmitting translucent resin layer, provided that the light transmittance of the phosphorescent light emitting layer is not attenuated by 30% or more. preferable.

  In the light-emitting display for signboard of the present invention, it is preferable from the viewpoint of aesthetic sustainability that an antifouling layer is provided on the surface of the light-transmitting translucent resin layer. The antifouling layer has an effect of suppressing dust dirt fixing of the light emitting display for signboard, and this antifouling layer is formed by laminating a transparent coating film or a transparent film. Specifically, the antifouling layer is an acrylic resin, an acrylic-silicone copolymer resin, an acrylic-fluorine copolymer resin, a fluorine-based copolymer resin, a vinylidene fluoride resin, an acrylic-urethane copolymer resin, or a crosslinked urethane. A transparent coating film having a thickness of 0.001 to 0.1 mm obtained by applying and drying a solution containing one or more resins dissolved therein, or a thickness obtained by hot-melting one or more of these resins. A single-layer transparent film having a thickness of 0.01 to 0.5 mm or a multi-layer transparent film. Further, the surface of the antifouling layer is protected against thin film by one or more selected from fine particle silica (particularly colloidal silica), photocatalytic substance (particularly titanium dioxide), and organic silicate compound (particularly methyl or ethyl silicate hydrolysis condensate). The aesthetic appearance of the light emitting display for signboard of the present invention can also be maintained for a long time by forming a dirty layer.

The light-emitting display for signboard of the present invention preferably has fire resistance or non-combustibility as defined in the Fire Service Act or Building Standards Law, and for this reason, the light-diffusing laminate used in the light-emitting display system for signboards, In an exothermic test (ASTM-E1354: corn calorimeter test method) in which radiant heat of 50 kW / m ² is applied using a radiant electric heater, the total calorific value for 20 minutes after the start of heating is 8 MJ / m ² or less, and It is preferable to have nonflammability satisfying that the maximum heat generation rate continues for 10 seconds or more for 20 minutes after the start of heating and does not exceed 200 kW / m ² . Such a nonflammable light diffusing laminate is a phosphorescent light emitting material on one or more sides of a glass fiber woven fabric (non-sealed plain weave having a basis weight of 200 to 300 g / m ² and a porosity of 1% or less). A light-transmitting translucent resin layer of 0.1 to 0.5 mm, a soft polyvinyl chloride resin layer, a soft fluororesin layer, a silicone resin layer, or a combination thereof, is provided on the phosphorescent light emitting layer. It can be obtained by laminating.

The light-emitting display system for a signboard according to the present invention includes a non-colored fiber cloth as a base material, a light-transmitting light-transmitting resin layer provided on one or more sides of the fiber cloth, and the fiber cloth and the light-transmitting light-transmitting light system. In the light diffusing laminate in which at least one phosphorescent light emitting layer is provided between the resin layer, the light diffusing laminate has a display layer on one side or more, and the end cross section of the light diffusing laminate Light emitting diodes are arranged opposite to each other, the light-transmitting translucent resin layer has a light diffuse reflection pattern and / or light diffuse reflection particles, and the phosphorescent light emitting layer comprises colored phosphorescent phosphorescent phosphorescent particles, 400 A fluorescent whitening compound having a maximum absorption in a wavelength region of ˜450 nm is used in combination. The light-emitting diode (LED) is particularly preferably a black light LED capable of emitting a wavelength of 300 to 400 nm, and near-ultraviolet rays emitted to the end cross section of the light diffusing laminate are stored in the light-transmitting translucent resin layer. The phosphorescence emission of the entire surface of the phosphorescent light emitting layer is excited by light scattering in the light emitting layer surface direction and surface emission. Simultaneously with this excitation, the fluorescent whitening compound contained in the phosphorescent light emitting layer also excites the fluorescent light emission, so that the light emitting display system for signboard of the present invention can continuously emit bright white fluorescence.

An ordinary LED lighting system for acrylic resin signboards uses a transparent acrylic resin plate as a light guide plate, and diffuses and diffusely reflects the fluorescence of white or colored LEDs overlaid on one side of the light guide plate inside the acrylic resin plate. The resulting surface light emitter. In contrast to such LED lighting systems for signboards, near-ultraviolet radiation from the near-ultraviolet light-emitting diodes provided in the light-emitting display system for signboards of the present invention has no luminance, and therefore radiates within the light-transmitting translucent resin layer. Even if the light is diffused and reflected on the surface of the light-transmitting translucent resin layer, it does not have an illuminating action. In the light-emitting display system for signboard of the present invention, the phosphorescent light contained in the phosphorescent light-emitting layer is obtained by causing the near-ultraviolet light having no surface-reflected luminance to act on the phosphorescent light-emitting layer adjacent to the light-transmitting translucent resin layer. Phosphorescent emission of phosphorescent particles by containing phosphorescent light-emitting compound having a maximum absorption in the wavelength region of 400 to 450 nm in the phosphorescent light emitting layer. The effect of dramatically improving the brightness of the screen is obtained. The near ultraviolet light emitting diode is mounted at least one side of the light emitting display system unit for signboard of the present invention, preferably left-right facing or vertically facing, and further left-right facing and vertically facing depending on the size of the system unit. In both cases, the light emission direction of the near-ultraviolet light-emitting diode is a cross section of the light-transmitting translucent resin layer. The arrangement and the number of arrangement of the near-ultraviolet light emitting diodes can be arbitrarily set according to the size per unit of the light emitting display system for signboard and the illuminance level necessary for the emergency light function. In addition, the near-ultraviolet light emitting diode is equipped with a battery and a battery switching device as a power source to assist the emergency light function. Moreover, the light-emitting display body system for signboard of the present invention comprises an optical ceiling by arbitrarily combining a plurality of the system units.

The emergency light illumination method for a signboard light-emitting display body according to the present invention includes a near-ultraviolet light-emitting diode and a battery-equipped light-emitting display body system provided with a battery. Radiating and diffusing in the light-transmitting transparent resin layer to make a surface reflection on the surface of the light-transmitting transparent resin layer, and the near-ultraviolet rays reflected from this surface act on the phosphorescent light emitting layer adjacent to the light-transmitting transparent resin layer Is a method in which the phosphorescent particles contained in the phosphorescent light emitting layer are photoexcited to cause phosphorescence emission, and in particular, the phosphorescent light emitting layer includes a fluorescent whitening compound having a maximum absorption in a wavelength region of 400 to 450 nm. As a result, the phosphorescence emission brightness by the phosphorescent particles is dramatically improved, and at the same time, emergency light illumination using white light emission as a light source, which was not conventionally obtained with phosphorescent particles, is obtained. It is intended to enable the door.

  A design or an advertisement is made arbitrary by providing a display layer such as a picture, a photograph, a letter, a shop name, or a pattern on the surface of the light diffusing laminate in the light emitting display for signboard of the present invention. These are any one of gravure printing, screen printing, ink jet printing, transfer printing, cutting sheet sticking, brush writing, formed on the phosphorescent light emitting layer or the light transmissive translucent resin layer constituting the light diffusing laminate. Although it is based on one or more means, in the light emitting display for signboard of the present invention, ink jet printing by outputting image data processed by a computer is particularly preferable because it does not impair light transmittance.

  Hereinafter, the light emitting display for signboard of the present invention will be specifically described. FIGS. 1-4 represent the cross section of the example of the light diffusable laminated body (2) used for the light emission display body (1) for signboards of this invention, and each has a display layer (10) as an external surface. The light diffusing laminate (2) in FIG. 1 has a non-colored fiber fabric (3) as a base material, a light-transmitting translucent resin layer (4) is provided on one side of the fiber fabric, and the fiber fabric. A phosphorescent light emitting layer (5) is provided between (3) and the light-transmitting translucent resin layer (4). The light diffusing laminate (2) in FIG. 2 has a non-colored fiber fabric (3) as a base material, a light-transmitting translucent resin layer (4a) on one side of the fiber fabric, and the other fiber fabric. A light-transmitting translucent resin layer (4b) is provided on the surface side, and a phosphorescent light-emitting layer (5) is provided between the fiber fabric (3) and the light-transmitting translucent resin layer (4a). The light diffusing laminate (2) in FIG. 3 has a non-colored fiber fabric (3) as a base material, a light-transmitting translucent resin layer (4a) on one side of the fiber fabric, and the other fiber fabric. A light-transmitting translucent resin layer (4b) is provided on the surface side, and a phosphorescent light-emitting layer (5) is provided between the fiber fabric (3) and the light-transmitting translucent resin layer (4b). The light diffusing laminate (2) in FIG. 4 has a non-colored fiber fabric (3) as a base material, a light-transmitting translucent resin layer (4a) on one side of the fiber fabric, and the other fiber fabric. A light-transmitting translucent resin layer (4b) is provided on the surface side, and a phosphorescent light-emitting layer (5a) is provided between the fiber fabric (3) and the light-transmitting translucent resin layer (4a). A phosphorescent light emitting layer (5b) is provided between the fabric (3) and the light transmissive translucent resin layer (4b).

  The light diffusive laminate (2) shown in FIGS. 5 and 6 uses the light diffuse reflection pattern (6) and the light diffuse reflection particles (7) attached to the light transmissive resin layer (4) as shown in FIG. Although the embodiment will be described as an example, the examples of the light diffuse reflection pattern (6) and the light diffuse reflection particle (7) are similarly applied to the embodiments of FIGS. 2, 3, 4, 7, and 8. Is. The light diffusing laminate (2) in FIG. 5 is a light-transmitting translucent resin having an uncolored fiber fabric (3) as a base material and a light diffuse reflection pattern (6) on the outermost layer on one side of the fiber fabric. A layer (4c) is provided, and a phosphorescent light emitting layer (5) is provided between the fiber fabric (3) and the light-transmitting translucent resin layer (4c). The light diffusing laminate (2) in FIG. 6 has a non-colored fiber fabric (3) as a base material and a light-transmitting translucent resin layer (4d) having diffused light reflecting particles (7) on one side of the fiber fabric. ) And a phosphorescent light emitting layer (5) is provided between the fiber fabric (3) and the light-transmitting translucent resin layer (4d).

  7 and 8 show a light-emitting display body system (11) for a signboard according to the present invention and its emergency light illumination method. The light diffusive laminate (2) of FIGS. 7 and 8 will be described by taking the embodiment of FIG. 1 as an example, but examples of the light emitting display body system for a signboard of the present invention are shown in FIGS. The same applies to the embodiments. FIG. 7 shows an embodiment in which the light diffusing laminate (2) of FIG. 1 is used for an illumination shade, and the side surface of the light transmissive translucent resin layer (4) in the light diffusing laminate (2) of FIG. It is configured to face the fluorescent lamp (9) so as to be inside the light emitting display body system for signboards, and the surface on the fiber fabric (3) side and the display layer (10) are outside faces of the light emitting display body system for signboards. . Moreover, the light emitting diode (8) is arranged in the edge part which opposes the light diffusable laminated body (2) of FIG. 1 toward the edge part cross section like FIG. In the signage light emitting display system of FIG. 7, the lighting fluorescent lamp (9a) transmits and diffuses the light diffusing laminate (2), and the light diffusing laminate (2) itself emits light uniformly and clearly. In the figure shown, the light emitting diode is in an OFF state. (8a) FIG. 8: is a figure which shows the power failure state made into the fluorescent lamp OFF (9b) in the light emission display body system (11) for signboards of FIG. At this time, the phosphorescent light emitting layer (5) of the light diffusing laminate (2) emits phosphorescence without power, but in the light emitting display body system (11) for signboard of the present invention, the light diffusing laminate ( 2) By turning on the light emitting diode (8b) provided at the end of the light emitting diode (8b), the near-ultraviolet rays emitted from the light emitting diode (8b) and reflected and diffused in the light-transmitting translucent resin layer (4) 5) It is the figure which showed the state which light-emits the luminous light emission layer (5) by irradiating the whole surface, and thereby light diffusable laminated body (2) light-emits, and functions as an emergency lamp illumination.

1). A transparent acrylic flat plate (1.5 m × 1.5 m square size) having a thickness of 5 mm is used as a light-transmitting translucent resin layer (4), and an ultraviolet curable screen ink HUG (epoxy acrylate type) manufactured by Seiko Advance Co., Ltd. is provided on one side. Based on the clear standard color of this product, phosphorescent luminous particles manufactured by Easy Bright Co., Ltd .: Part No. EZCB-50E (Sr ₄ Al ₁₄ O ₂₅ : EU, Dy) is blended in an amount of 40% by mass with respect to the solid content of the ink. Compound (Trademark: Uvitex OB: 2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] manufactured by Ciba Specialty Chemicals, Inc. was blended in an amount of 0.2% by mass based on the ink solid content. The composition was used to form a phosphorescent light-emitting layer (5) having a thickness of 0.5 mm by screen printing (photoluminescent particles: combined use of fluorescent whitening compound was 100). 0.5 is a mass ratio of.)
2). On the opposite side of the light-transmitting translucent resin layer (4) on which the phosphorescent layer (5) was formed, a light irregular reflection pattern (6) was formed on the entire surface with silica fine particle-containing ink. The light irregular reflection pattern (6) is a circular dot having a diameter of 3.5 mm, and the dot interval in the horizontal direction is 3.5 mm and the dot interval in the vertical direction is 3.5 mm. The occupation ratio of the light diffuse reflection pattern area (total area of all dots) in the light-transmitting translucent resin layer was 64%.
3). Non-colored glass fiber (multifilament) warp yarn of 675 dtex, plain weaving with a placement density of 45 yarns / inch per inch, and 675 dtex glass fiber (multifilament) weft yarns with a placement density of 35 yarns / inch, 205 g A glass fiber fabric (3) having a / m ² and a meshing degree of 1% or less was used as a base material. The entire glass fiber fabric (3) was treated with 1 g / m ² of acrylic acid perfluoroalkyl ester copolymer resin and γ-glycidoxypropyltriethoxysilane to impart water repellency. The glass fiber fabric (3) is laminated and integrated on one surface of the light-transmitting light-transmitting light-transmitting resin layer (4) obtained by 1) and 2) with the surface of the phosphorescent light-emitting layer (5) as an adhesive surface, as shown in FIG. A light diffusing laminate (2) was obtained.
4). The center of the light-diffusing laminate (2) in the shape of a band of company name logo (HIRAOKA) 20 cm × 140 cm by screen printing on the glass fiber fabric (3) surface of the light-diffusing laminate (2) obtained in 3) above. A display layer (10) was formed on the part.
5). Near-ultraviolet light-emitting diode (8) (NSPU510CS manufactured by Nichia Corporation) on the side end of the light diffusing laminate (2) obtained in 4) and on the side end facing the side end. 125 pieces of diameter φ5 mm (peak wavelength 375 nm) are arranged at intervals of 7 mm per side of the side edge of the light diffusing laminate (2), and connected to an emergency battery as one unit of light emitting display body system for signboard Four fluorescent lamps (9) (36W / 40 type) were mounted per unit. This signboard light-emitting display body system (11) has a glass fiber fabric (3) as an exterior, and the entire surface of the light diffusing laminate (2) emits light uniformly in the appearance observation by lighting the interior fluorescent lamp. The display of “HIRAOKA” and the lighting effect were exhibited as the light emitting display for the use (1). After the fluorescent lamp illumination is continued for 1 hour, at the moment when the fluorescent lamp illumination is turned off and the power is cut off, the phosphorescent light emitting layer (5) emits phosphorescence and is emitted from the diode (8) that is turned on by starting the battery device. The near-ultraviolet auxiliary light is guided while being diffusely reflected on the light-transmitting translucent resin layer (4) to irradiate the phosphorescent light-emitting layer (5), whereby the phosphorescent light-emitting property contained in the phosphorescent light-emitting layer (5) The phosphorescent whitening compound synergistically increases the light emission brightness by photoexciting the fluorescent whitening compound at the same time as the particles are photoexcited, and also has a sufficient emergency light function to emit dazzling white fluorescent light for a long time with energy saving. Had. The light emission luminance immediately after the power failure was 830 mcd / m ² , and the light emission luminance after 30 minutes was 810 mcd / m ² .

A 5 mm thick transparent acrylic flat plate (1.5 m × 1. 5) containing 20 wt% of 10-50 μm styrene resin beads as light diffusely reflecting particles (7) in the light-transmitting translucent resin layer (4) of Example 1. Instead of changing to (5 m square size), the formation of the light irregular reflection pattern (6) was omitted. Other than that, the signboard light-emitting display body (1) was obtained in the same manner as in Example 1, and this was used in the same signboard light-emitting display body system as in Example 1. As a result, the light emission luminance immediately after the power failure was 808 mcd / m ^2. After 30 minutes, the light emission brightness was 784 mcd / m ² , and it had a sufficient emergency light function to emit bright white fluorescent light for a long time.

1). An uncolored glass fiber fabric (3) imparted with the same water repellency as in Example 1 was used as a substrate. On one side of this glass fiber fabric, a 0.15 mm thick polyvinyl chloride resin composition layer (PVC 100 parts by mass, phthalic acid plasticizer 45 parts by mass, aromatic phosphate 20 parts by mass, barium-based composite metal stabilizer 2 Mass part) was provided, and the light-transmitting translucent resin layer (4) was formed. The same light irregular reflection pattern (6) as in Example 1 was formed on the entire surface of this light-transmitting translucent resin layer.
2). Next, on the other surface of the glass fiber fabric (3), a 0.1 mm-thick polyvinyl chloride resin composition layer (PVC 100 parts by mass, phthalic acid plasticizer 45 parts by mass, aromatic phosphate ester 20 parts by mass, 2 parts by weight of a barium-based composite metal stabilizer, phosphorescent particles made by Easy Bright Co., Ltd .: 40 parts by weight of EZCB-50E (Sr ₄ Al ₁₄ O ₂₅ : EU, Dy), fluorescent whitening compound (trademark: Uvitex OB: 2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] 0.2 parts by mass) manufactured by Ciba Specialty Chemicals Co., Ltd. was provided to form the phosphorescent light emitting layer (5). (The combination of fluorescent particles: fluorescent whitening compound is a mass ratio of 100: 0.5.)
3). Next, a 0.1 mm-thick polyvinyl chloride resin composition layer (100 parts by weight of PVC, 45 parts by weight of a phthalate plasticizer, 20 parts by weight of an aromatic phosphate ester, and a barium-based composite metal on the phosphorescent light emitting layer (5). 2 parts by mass of a stabilizer) was provided, and a light-transmitting translucent resin layer (4) was further formed to obtain a light-diffusing laminate (2) shown in FIG. 2 or FIG. (Width 1m x length 2m)
4). On the surface of the glass fiber fabric (3) of the light diffusing laminate (2) obtained in 3) above, a company logo (HIRAOKA) 20 cm × 140 cm strip shape is formed in the center of the light diffusing laminate (2) by inkjet printing. A display layer (10) was formed.
5). Near-ultraviolet light-emitting diode (8) (NSPU510CS manufactured by Nichia Corporation) on the side end of the light diffusing laminate (2) obtained in 4) and on the side end facing the side end. 125 pieces of diameter φ5 mm (peak wavelength 375 nm) are arranged at intervals of 7 mm per side of the side edge of the light diffusing laminate (2), and connected to an emergency battery as one unit of light emitting display body system for signboard Four fluorescent lamps (9) (36W / 40 type) were mounted per unit. This signboard light-emitting display body system (11) is used in the direction of FIG. 2 or FIG. 3, and when the interior fluorescent lamp is turned on, the entire surface of the light diffusing laminate (2) emits light uniformly during external observation. The display of “HIRAOKA” and the lighting effect were exhibited as the light-emitting display body (1). After the fluorescent lamp illumination is continued for 1 hour, at the moment when the fluorescent lamp illumination is turned off and the power is cut off, the phosphorescent light emitting layer (5) emits phosphorescence and is emitted from the diode (8) that is turned on by starting the battery device. The near-ultraviolet auxiliary light is guided while diffusely reflecting the light-transmitting translucent resin layer (4) to irradiate the phosphorescent light-emitting layer (5), thereby photoexciting the phosphorescent particles contained in the phosphorescent light-emitting layer. At the same time, the phosphorescent whitening compound synergistically increases the light emission luminance by photoexciting the fluorescent whitening compound, the light emission luminance immediately after the power failure is 841 mcd / m ² , and the light emission luminance after 30 minutes is 823 mcd / m ² . It has sufficient emergency light function to emit bright white fluorescent light for a long time with energy saving, and also has non-flammability suitable for ASTM-E1354: Corn calorimeter test method It had.

The composition of the light-transmitting translucent resin layer (4) having a thickness of 0.15 mm in Example 3 was prepared by adding 100 parts by mass of PVC, 45 parts by mass of a phthalic acid plasticizer, 20 parts by mass of an aromatic phosphate, and a barium-based composite metal. Instead of changing to 2 parts by mass of stabilizer and 20 parts by mass of 10-50 μ styrene resin beads as light irregular reflection particles (7), formation of the light irregular reflection pattern (6) was omitted. Other than that, the light-emitting display body for signboard (1) was obtained in the same manner as in Example 3, and this was used for the same light-emitting display body for signboard as in Example 3. As a result, the light emission luminance immediately after the power failure was 840 mcd / m ^2. 30 minutes later, the light emission brightness is 816 mcd / m ² , and it has a sufficient emergency light function to emit a bright white fluorescent light for a long time, and further conforms to ASTM-E1354: Corn calorimeter test method. It was nonflammable.

1). An uncolored glass fiber fabric (3) imparted with the same water repellency as in Example 1 was used as a substrate. A vinylidene fluoride resin layer (PVDF film) having a thickness of 0.15 mm was provided on one surface of the glass fiber fabric to form a light-transmitting translucent resin layer (4). The same light irregular reflection pattern (6) as in Example 1 was formed on the entire surface of this light-transmitting translucent resin layer.
2). Next, on the other surface of the glass fiber fabric (3), a 0.1 mm-thick fluorine-based resin composition layer (100 parts by mass of PVDF, photoluminescent particles manufactured by Easy Bright Co., Ltd .: product number EZCB-50E (Sr ₄ Al ₁₄ 40 parts by mass of O ₂₅ : EU, Dy, fluorescent whitening compound (trademark: Uvitex OB: 2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] manufactured by Ciba Specialty Chemicals 0.2 parts by mass) was formed to form the phosphorescent light emitting layer (5) (the combined use of phosphorescent particles: fluorescent whitening compound is a mass ratio of 100: 0.5).
3). Next, a 0.1 mm-thick vinylidene fluoride resin composition layer (PVDF film) is provided on the phosphorescent light emitting layer (5), and a light-transmitting translucent resin layer (4) is further formed. A light-diffusing laminate (2) shown in 3 was obtained. (Width 1m x length 2m)
4). On the surface of the glass fiber fabric (3) of the light diffusing laminate (2) obtained in 3) above, a company name logo (HIRAOKA) is formed into a 20 cm × 140 cm band by ink jet printing, and the central portion of the light diffusing laminate (2). A display layer (10) was formed.
5). Near-ultraviolet light-emitting diode (8) (NSPU510CS manufactured by Nichia Corporation) on the side end of the light diffusing laminate (2) obtained in 4) and on the side end facing the side end. 125 pieces of diameter φ5 mm (peak wavelength 375 nm) are arranged at intervals of 7 mm per side of the side edge of the light diffusing laminate (2), and connected to an emergency battery as one unit of light emitting display body system for signboard Four fluorescent lamps (9) (36W / 40 type) were mounted per unit. This signboard light-emitting display body system (11) is used in the direction of FIG. 2 or FIG. 3, and when the interior fluorescent lamp is turned on, the entire surface of the light diffusing laminate (2) emits light uniformly during external observation. The display of “HIRAOKA” and the lighting effect were exhibited as the light-emitting display body (1). After the fluorescent lamp illumination is continued for 1 hour, at the moment when the fluorescent lamp illumination is turned off and the power is cut off, the phosphorescent light emitting layer (5) emits phosphorescence and is emitted from the diode (8) that is turned on by starting the battery device. The near-ultraviolet auxiliary light is guided while being diffusely reflected on the light-transmitting translucent resin layer (4) to irradiate the phosphorescent light-emitting layer (5), whereby the phosphorescent light-emitting property contained in the phosphorescent light-emitting layer (5) The phosphorescent whitening compound synergistically increases the light emission luminance by photoexciting the fluorescent whitening compound simultaneously with the photoexcitation of the particles, the light emission luminance immediately after the power failure is 833 mcd / m ² , and the light emission luminance after 30 minutes is 818 mcd / m 2. ^2, it has sufficient emergency lights features enough to emit dazzling white fluorescent emission for a long period of time at energy saving, further ASTM-E 1354: conforms incombustible cone calorimeter test method It had.

Instead of changing the formulation of the light-transmitting translucent resin layer (4) having a thickness of 0.15 mm in Example 5 to (100 parts by mass of vinylidene fluoride resin, 20 parts by mass of fluoric mica as light diffusely reflecting particles (7)) The formation of the light irregular reflection pattern (6) was omitted. Other than that, the light-emitting display body for signboard (1) was obtained in the same manner as in Example 5, and this was used in the same light-emitting display body system for signboard as in Example 5. As a result, the light emission luminance immediately after the power failure was 842 mcd / m ^2. 30 minutes later, the light emission brightness is 833 mcd / m ² , and it has a sufficient emergency light function to emit a bright white fluorescent light for a long time, and further conforms to ASTM-E1354: Corn calorimeter test method It was nonflammable.

Comparative Example 1

In the light diffusing laminate (2) of Example 1, from the phosphorescent light emitting layer (5), the fluorescent whitening compound (2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] ) All the procedures were the same as in Example 1 except that the formulation of 0.2% by mass (solid content ratio) was omitted. The signboard light-emitting display body (1) obtained by omitting the compounding of the fluorescent brightening compound is phosphorescent by the near-ultraviolet auxiliary light emitted from the diode (8) that is turned on when the fluorescent lamp is turned off. Although the emission brightness of the light emitting layer is increased, it is blue-green phosphorescence emission with a short illumination distance, the emission brightness immediately after the power failure is 464 mcd / m ² , and after 30 minutes the emission brightness is attenuated to 293 mcd / m ² , Since the gap with the illuminant becomes large, it is inappropriate as an emergency light source.

Comparative Example 2

  In the light diffusing laminate (2) of Example 2, the fluorescent whitening compound (2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] ) All was the same as Example 2 except that the formulation of 0.2% by mass (solid content ratio) was omitted.

Comparative Example 3

  In the light diffusing laminate (2) of Example 3, from the phosphorescent light emitting layer (5), the fluorescent whitening compound (2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] ) All were the same as Example 3 except that the formulation of 0.2% by mass (solid content ratio) was omitted.

Comparative Example 4

  In the light diffusing laminate (2) of Example 4, from the phosphorescent light emitting layer (5), the fluorescent whitening compound (2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] ) All were the same as Example 4 except that the formulation of 0.2% by mass (solid content ratio) was omitted.

Comparative Example 5

  In the light-diffusing laminate (2) of Example 5, from the phosphorescent light emitting layer (5), the fluorescent whitening compound (2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] ) All were the same as Example 5 except that the formulation of 0.2% by mass (solid content ratio) was omitted.

Comparative Example 6

  In the light diffusing laminate (2) of Example 6, from the phosphorescent light emitting layer (5), the fluorescent whitening compound (2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] ) All was the same as Example 6 except that the formulation of 0.2% by mass (solid content ratio) was omitted.

In the signboard light emitting display (1) obtained in Comparative Examples 2 to 6, the luminous brightness of the phosphorescent light emitting layer is increased by the near ultraviolet rays emitted from the diode (8) that is turned on by starting the battery device when the fluorescent lamp is turned off. the illumination distance is short blue-green phosphorescent light emission luminance immediately after power failure 400mcd / ^{m 2} levels, 30 minutes after the light-emitting luminance is attenuated to 300mcd / ^{m 2} level, large differences between the dark illuminant Therefore, it was inappropriate as an emergency light source.

  As is clear from Examples 1 to 6 and Comparative Examples 1 to 6, the light-emitting display body for signboard and the light-emitting display body system for signboard of the present invention have a ceiling lighting function by a special phosphorescent light-emitting layer at the time of power failure. It starts quickly and uses a phosphorescent material, emits a dazzling illumination light similar to an unprecedented white fluorescent lamp, and can be sustained for a long time with energy saving. Facilities, convenience stores, fast food stores, taverns, karaoke stores, service stations such as gas stations, financial ATMs, underground spaces such as subway stations, underground shopping streets, underground communication passages, and commercial gatherings such as shopping malls A signboard in the event of a large-scale power outage due to an unforeseen disaster by using it in facilities, hotels, inns, and various public facilities Available luminous display body itself as emergency light, and is also available as a guidepost for evacuation.

The figure which shows the structural example of the light diffusable laminated body for the light emission display bodies for signboards The figure which shows the structural example of the light diffusable laminated body for the light emission display bodies for signboards The figure which shows the structural example of the light diffusable laminated body for the light emission display bodies for signboards The figure which shows the structural example of the light diffusable laminated body for the light emission display bodies for signboards The figure which shows the example of formation of the light irregular reflection action part provided to a light propagation translucent resin layer in a light diffusive laminated body The figure which shows the example of formation of the light irregular reflection action part provided to a light propagation translucent resin layer in a light diffusive laminated body The figure which shows the normal use state of fluorescent lamp ON in the light emission display body system for signboards of this invention The figure which shows the emergency light function at the time of a power failure in the light emission display body system for signboards of this invention The figure which shows the example of formation of the light irregular reflection action part provided to a light propagation translucent resin layer in a light diffusive laminated body The figure which shows arrangement | positioning of a light emitting diode in the light emission display body system for signboards of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light-emitting display body for signboards 2 Light diffusable laminated body 3 Fiber fabric (base material)
4 Light-transmitting translucent resin layer
4a Light-transmitting translucent resin layer laminated with phosphorescent light-emitting layer
4b Light-transmitting translucent resin layer laminated with fiber fabric
4c Light-transmitting translucent resin layer provided with light diffuse reflection action part
4d Light Propagation Translucent Resin Layer Provided with Light Diffuse Reflecting Action Section 5 Light Storage Light Emitting Layer 6 Light Diffuse Reflection Pattern 7 Light Diffuse Reflective Particle 8 Light Emitting Diode
8a OFF state
8b ON state 9 Fluorescent lamp (or other lighting)
9a ON state
9b Power failure state 10 Display layer 11 Light-emitting display system for signboard

Claims (7)

Using a non-colored fiber fabric as a base material, a light-transmitting translucent resin layer is provided on one or more sides of the fiber fabric, and at least 1 is provided between the fiber fabric and the light-transmitting translucent resin layer. A light diffusive laminate comprising a plurality of phosphorescent light emitting layers, wherein the light diffusive laminate has a display layer on one side or more, and the light-transmitting translucent resin layer comprises light diffuse reflection The phosphorescent light emitting layer has a pattern and / or diffused light reflecting particles, and the phosphorescent light emitting layer includes a combination of a colored phosphorescent phosphorescent phosphorescent particle and a fluorescent whitening compound having a maximum absorption in a wavelength region of 400 to 450 nm. A light-emitting display for signboards.   The fluorescent whitening compound is an oxazole derivative, pyrazoline derivative, stilbene disulfonic acid derivative, styryl biphenylene derivative, benzimidazole derivative, triazole derivative, carbazole derivative, pyridine derivative, coumarin derivative, naphthalic acid derivative, hydroquinolinone derivative, imidazolone derivative, The light-emitting display for signboard according to claim 1, which is at least one selected from spiro compound derivatives and heterocyclic compound-substituted pyrene derivatives.   The light-emitting display for signboard according to claim 1 or 2, wherein the phosphorescent layer comprises the phosphorescent particles and the fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5. body. Using a non-colored fiber fabric as a base material, a light-transmitting translucent resin layer is provided on one or more sides of the fiber fabric, and at least 1 is provided between the fiber fabric and the light-transmitting translucent resin layer. In the light diffusive laminate comprising the phosphorescent light emitting layer of the layer, the light diffusive laminate has a display layer on one side or more, and the light-transmitting translucent resin layer comprises a light diffuse reflection pattern and / or The phosphorescent light-emitting layer further includes a phosphorescent whitening compound having a maximum absorption in a wavelength region of 400 to 450 nm , and further comprising A light-emitting display system for a signboard having an emergency light function, wherein light-emitting diodes are arranged facing an end section of a diffusive laminate.   The signboard having an emergency light function according to claim 4, wherein the phosphorescent light emitting layer contains the phosphorescent particles and the fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5. Luminous display system. Using a non-colored fiber fabric as a base material, a light-transmitting translucent resin layer having a light irregular reflection pattern and / or light irregular reflection particles is provided on one or more sides of the fiber fabric, and the fiber fabric and the light propagation property are provided. A light diffusing laminate comprising at least one phosphorescent light emitting layer provided between the light transmissive resin layer, the light diffusing laminate having a display layer on one side or more, and the phosphorescent light emitting layer is colored. Near-UV light emission using phosphorescent phosphorescent phosphorescent particles and a fluorescent whitening compound having maximum absorption in a wavelength region of 400 to 450 nm , and arranged opposite to the end cross section of the light diffusing laminate. The diode emits light from the battery and irradiates the cross section of the end of the light-transmitting light-transmitting resin layer to emit near ultraviolet rays from the entire surface of the light-transmitting light-transmitting resin layer. Fluoresce Characterized the door, emergency lighting method signboard light emitting display body.   The light-emitting display body for signboard according to claim 6, wherein the phosphorescent layer comprises the phosphorescent particles and the fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5. Emergency light illumination method.

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