JP5282232B2 - Optical ceiling lighting shade, optical ceiling lighting system having emergency light function, and emergency light lighting method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminous ceiling light shade used for ceilings of various buildings, ceilings in elevator cages, and ceilings of railway vehicles which has an emergency light lighting function at the time of power failure, and by utilizing light storage emission, emits illumination light close to that of a white fluorescent lamp, and can continue for a long time, to provide a lighting system thereof, and to provide a lighting method thereof. <P>SOLUTION: The luminous ceiling light shade (1) and the luminous ceiling light shade system (10) use a light diffusive laminate (2) in which a fiber cloth (3) is used as a substrate and a light propagation translucent resin layer (4) is provided on its one side, and a light-storage luminous layer (5) containing a fluorescent whitening compound is installed on at least one layer of the light propagation translucent resin layer (4), and a near ultraviolet ray light-emitting diode (6) is arranged opposed to the end part cross-section of the light diffusive laminate (2) to form an illumination system. Thereby, at the time of power failure, the light-emitting diode (6) is made to generate light by a battery and emits the light from the end part cross-section of the light propagation translucent resin layer (4), and the whole face of the light-storage luminous layer (5) is made to emit white fluorescent light to serve as an emergency light illumination. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an optical ceiling lighting shade having both functions of a ceiling material and a lighting shade, and a lighting method thereof. More specifically, the present invention relates to a hotel entrance lounge party venue, an office building large conference room, a crown. Laminates used for light ceiling lighting shades of large-scale facilities such as wedding halls, station buildings / airport facilities, underground shopping streets, large commercial facilities, various public facilities, and elevator cars installed in these large-scale facilities The present invention relates to a laminated body used for an optical ceiling lighting shade in a vehicle, and further to a laminated body used for an optical ceiling lighting shade in a railway vehicle. It relates to the emergency light illumination method.

  A large number of lights are required in large-scale facilities such as hotel entrances, lounges, party venues, large office building conference rooms, ceremonial halls, station buildings, airport facilities, underground shopping streets, large commercial facilities, and various public facilities. And For example, chandeliers and indirect lighting are used for interior decorations with dignity and solemnity, such as entrance and party venues of luxury hotels and ceremonial occasions. In general, lighting on the office ceiling is one where fluorescent lamp units are densely arranged vertically and horizontally at intervals of 1 to 1.5 m, and this is designed with an emphasis on uniformity of room illuminance and ease of fluorescent lamp replacement. is there. In addition, in facilities such as station buildings / airports, underground passageways, and large commercial facilities, the purpose of the facility is to include a space design that does not expose the ceiling lighting equipment itself to create a more sophisticated comfortable space. The design of the lighting equipment varies depending on the function.

  As a general example of space design that does not expose the ceiling lighting equipment itself, a light diffusing acrylic resin plate or the like is used as a large lighting shade, which replaces the naked light emission of fluorescent lamps with soft light emission by the lighting shade. However, it still has a complicated appearance in which the illumination part and the non-illumination part are mixed. Recently, the introduction of an optical ceiling in which a large number of fluorescent lamps are arranged on the ceiling as in the past and the entire surface of the ceiling is made into an illumination shade has been in progress. For example, the light ceiling can be used for non-combustible construction of large ceilings by using a long glass cloth as a base material, and the glass cloth is a material suitable for lighting shade because of its own light diffusibility and fluorescent lamp concealment. It is. This light ceiling lighting not only produces a bright and elegant lighting space, but also makes fire countermeasures more reliable due to the non-combustibility of glass cloth. On the other hand, there is a demand for a design that makes the ceiling lighting brighter and takes fire countermeasures into consideration in elevator cars such as high-rise hotels, mid- and high-rise buildings, and large commercial facilities. There are similar requirements for Shinkansen vehicles and subway vehicles regarding lighting effects and fire countermeasures.

  By the way, in buildings and facilities, emergency lights, evacuation guide lights, guidance display boards, etc. are installed in preparation for power outages. However, emergency lights and guide lights are scattered, and the effect is such that the near field of view is effective in the dark. So, in the event of a power outage in the event of a disaster, there is not necessarily a sufficient safety environment for the crowd to perform a calm evacuation. Therefore, emergency lighting is particularly important for power outages in elevators where worries about inducing panic, but the current situation is that the lighting is darker than the original lighting in order to emphasize the long-lasting sustainability. Also, in the event of a power outage during nighttime operation of a Shinkansen vehicle, a power outage in a tunnel, or a power outage in a subway vehicle, the lighting by the emergency light is dim compared to the original lighting. It imposes emotional distress on people who are held in the railcar.

  Therefore, for example, in Japanese Patent Application Laid-Open No. 10-087202 (Patent Document 1), as an emergency lighting at the time of a power failure in an elevator car, an illumination cover that transmits illumination light in a room lighting device or a reflector that reflects illumination light is used. A phosphorescent material is provided inside or on the surface, and a phosphorescent material is provided on the ceiling, side plate, curtain plate, door inner surface, floor surface, operation panel, etc. of the car, and the illuminance by the phosphorescent emission is obtained without using an emergency power supply. Proposals have been made. However, since the luminous intensity of the phosphorescent material decays with time, it is not suitable for cases where the phosphorescent material is confined in the elevator car for a long time due to a power failure. As means for solving this problem, Japanese Patent Application Laid-Open No. 2008-150124 (Patent Document 2) uses a blackout lamp built in a battery and a phosphorescent resin in a cage, and makes the blackout lamp and the luminous resin complement each other. Has proposed a method for ensuring the illuminance in a car at the time of a power failure for a long time. Certainly, according to the method of Patent Document 2, it is possible to illuminate the car for a long time in the event of a power outage. However, the light is turned on at the same time that the power is turned on when the luminous intensity is reduced. If the lighting environment is repeated such that the phosphorescent lighting is repeated, there is a risk of long-term mental stress on people confined in the elevator car.

  Japanese Laid-Open Patent Publication No. 2008-180989 (Patent Document 3) proposes an internally illuminated sign provided with a surface light emitter having a phosphorescent plate behind the display unit as an internally illuminated signboard that can be displayed even during a power failure. In addition, in other areas such as residential spaces and daily necessities, risk management of emergency lights, evacuation guide plates, signposts, landmarks, etc. in the event of a disaster or power outage using phosphorescent properties of phosphorescent substances Many inventions as products have been proposed. However, most of them simply use the phosphorescent color of blue or green phosphorescent material as it is for products, so if it is a mark display on a remote control of a home appliance or a switch of a fluorescent lamp, its presence is not a concern. However, when using phosphorescent materials in large areas, such as outdoor interior lighting large signboards, building ceiling materials, wall materials, flooring materials, etc. The cool phosphorescent colors of blue and green can increase the anxiety of people left in the dark for a long time. For example, in the internally illuminated signboard of Patent Document 3, it is proposed to provide an installation interval between the display part of the signboard and the phosphorescent plate installed on the back surface as a method of relieving the phosphorescent emission color peculiar to phosphorescent substances. However, with this method, a decrease in the luminous emission luminance observed from the signboard display unit is inevitable. Therefore, in a light-emitting system using a phosphorescent material, if the phosphorescent color itself can be obtained with bright white light (the color of a fluorescent lamp), the entrance / lounge / partition hall of the hotel, the large meeting room of the office building, the ceremonial occasion For emergency lighting functions such as ceremonial halls, station buildings / airport facilities, underground shopping halls, large commercial facilities, various public facilities, large-scale facilities, elevator cars, ceiling materials in rail cars, and light ceiling lighting shades Expected to dramatically expand applications. However, there has not yet been proposed a laminate for an optical ceiling lighting shade that converts blue or green phosphorescent emission colors of phosphorescent materials into white and that can sustain light emission for a long time.

Japanese Patent Laid-Open No. 10-087202 JP 2008-150124 A JP 2008-180989 A

  The present invention is an optical ceiling lighting shade that is used for ceilings of large buildings, general buildings, various facilities, etc., as well as ceilings of elevator cars and ceilings of railway vehicles. Light ceiling lighting shade having a ceiling lighting function using a phosphorescent material, and emitting a dazzling illumination light close to that of a white fluorescent light while using the phosphorescent material, and its lighting system, and its lighting system And an illumination method for the same.

  In order to solve the above problems, the optical ceiling lighting shade of the present invention is 1). A phosphorescent whitening compound containing a fluorescent whitening compound on the surface of at least one layer of the light-transmitting light-transmitting resin layer provided with a non-colored fiber fabric as a base material on at least one surface thereof A light diffusing laminate comprising a light emitting layer; 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 optical resin layer and irradiating the entire surface of the phosphorescent light emitting layer, a laminate suitable for optical ceiling lighting 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 ceiling illumination shade of the present invention is based on a non-colored fiber cloth, a light-transmitting light-transmitting resin layer is provided on one or more sides of the fiber cloth, and the light-transmitting light-transmitting resin layer is provided. A light diffusing laminate comprising a phosphorescent light emitting layer provided on the surface of at least one layer, wherein the light-transmitting translucent resin layer is a dot-like near-ultraviolet diffuse reflection pattern formed of a translucent paint containing silica With a total area occupancy of 25 to 75% of all dots with respect to the surface of the light-transmitting translucent resin layer, and the phosphorescent layer comprises colored phosphorescent phosphorescent particles and 400 to 450 nm. It is preferable to use together with a fluorescent whitening compound having maximum absorption in the near ultraviolet region. In the optical ceiling lighting shade of the present invention, 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 One or more selected from a derivative, a hydroquinolinone derivative, an imidazolone derivative, a spiro compound derivative, and a heterocyclic compound-substituted pyrene derivative are preferable. In the optical ceiling lighting shade of the present invention, it is preferable that 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. . In the optical ceiling lighting shade of the present invention, it is preferable that the light diffusing laminated body is for an elevator car ceiling. In the optical ceiling lighting shade of the present invention, it is preferable that the light diffusing laminate is for a railcar interior ceiling. The light ceiling lighting shade system having an emergency light function according to the present invention has an uncolored fiber fabric as a base material, a light-transmitting translucent resin layer is provided on at least one side of the fiber fabric, and the light propagation In the light diffusive laminate in which the phosphorescent light emitting layer is provided on the surface of at least one layer of the light transmissive resin layer, the light transmissive light transmissive resin layer has a dot-like shape formed by a translucent paint containing silica. The ultraviolet diffuse reflection pattern has a total area occupancy of 25 to 75% of all dots with respect to the surface of the light-transmitting translucent resin layer, and the phosphorescent layer further comprises colored phosphorescent phosphorescent particles, It is preferable that a fluorescent whitening compound having a maximum absorption in the near-ultraviolet region of 400 to 450 nm is used in combination, and that near-ultraviolet light-emitting diodes are arranged facing the end cross section of the light-diffusing laminate. . In the optical ceiling lighting shade system having an emergency light function according to the present invention, the phosphorescent light emitting layer uses the phosphorescent luminous particles and the fluorescent whitening compound in a mass ratio of 100: 0.01 to 100: 5. It is preferable to include. In the optical ceiling lighting shade system having an emergency light function according to the present invention, it is preferable that the light diffusing laminated body is for an elevator car ceiling. In the optical ceiling lighting shade system having an emergency light function according to the present invention, it is preferable that the light diffusing laminated body is for a railcar interior ceiling. An emergency lamp lighting method for an optical ceiling lighting shade according to the present invention includes a non-colored fiber cloth as a base material, and a dot-like near-ultraviolet diffused reflection pattern formed by a translucent paint containing silica on one or more sides of the fiber cloth. In the light diffusive laminate in which the light-transmitting light-transmitting resin layer is provided and the light-transmitting light-emitting layer is provided on the surface of at least one layer of the light-transmitting light-transmitting resin layer, Near ultraviolet rays using colored phosphorescent phosphorescent particles and fluorescent whitening compounds having absorption in the near ultraviolet region of 400 to 450 nm, and arranged opposite to the end cross section of the light diffusing laminate. The light emitting diode emits light from the battery and irradiates the end cross section of the light-transmitting translucent resin layer to emit near ultraviolet rays from the entire surface of the light-transmitting translucent resin layer. White It is preferable to light emission. In the emergency light illumination method for an optical ceiling illumination shade according to 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. In the emergency light illumination method for an optical ceiling illumination shade according to the present invention, the light diffusing laminate is preferably used for an elevator car ceiling. In the emergency light illumination method for an optical ceiling illumination shade according to the present invention, it is preferable that the light diffusing laminate is for a ceiling in a railway vehicle.

According to the optical ceiling lighting shade (system) of the present invention, as an optical ceiling that normally functions as both a ceiling material and a lighting shade, it exhibits an excellent lighting effect without uneven appearance that uniformly emits light from the entire ceiling surface. In the event of a power outage, the auxiliary function of the near-ultraviolet light-emitting diode by the battery enables the lighting function by phosphorescent emission of the phosphorescent material to be activated quickly, and it is possible to emit dazzling illumination light close to white fluorescent light for a long time with low power consumption. The optical ceiling lighting shade and the system can be provided. Therefore, the light ceiling lighting shade (system) of the present invention is applied to a hotel entrance / lounge / partner venue, office building large conference room, ceremonial hall, station building / airport facility, underground shopping area, large commercial facility, It is extremely useful as a power outage countermeasure because it works as an emergency light by applying it to the lighting shade of the ceiling of public facilities, the ceiling of elevator cars, and also the ceiling of railway vehicles. And efficient.

The light ceiling illumination shade according to the present invention has a light-transmitting light-transmitting resin layer provided on one side or more of a colorless fiber fabric as a base material, and at least one of the light-transmitting light-transmitting resin layers. This is a light diffusing laminate in which a phosphorescent light emitting layer is provided on the surface, and a near ultraviolet light emitting diode is arranged on this end portion. 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 optical ceiling lighting shade 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 fiber and glass fiber, or multifilament yarns can be used. These yarns are 100 to 1000 denier, and are obtained by entanglement of these yarns. A woven fabric or a knitted fabric having a non-open 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 ceiling lighting shade 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 the basis weight. It is preferable to use a non-blank plain woven fabric having a mass of 150 to 500 g / m ² for the fiber fabric. In particular, a glass fiber woven fabric excellent in light transmission (non-sealed plain weave with a basis weight of 200 to 300 g / m ² and a porosity of 1% or less) is used as a base material, and a phosphorescent light emitting layer is provided on one or more surfaces. A light-transmitting translucent resin layer of 0.1 to 0.5 mm of soft polyvinyl chloride resin, soft fluororesin, or silicone resin is laminated on the phosphorescent light-emitting layer by means of an adhesive or heat lamination, It is preferable in terms of nonflammability to make a light diffusable laminate having a thickness of 0.5 to 2.0 mm and a mass per unit area of 400 to 2000 g / 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. It contains flame retardants such as molybdenum, aluminum hydroxide, halogenated organic compounds, condensed phosphate compounds, etc., and the resulting light diffusing laminate (light ceiling lighting shade) is subjected to a fire test (according to ASTM-E1354) of the Building Standards Act. It preferably has nonflammability that conforms to the prescribed corn calorimeter test method. The light transmittance of the light diffusing laminate (light ceiling lighting shade) 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 optical ceiling lighting shade of the present invention has an acrylic resin, a methacrylate resin, a polycarbonate resin, a polystyrene resin, a polyester resin (PET / PBT), one or more surfaces of the above-described 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 a vinyl ester resin or a semi-rigid 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 light-transmitting light-transmitting resin layer of semi-rigid polyvinyl chloride resin as described above, and providing a phosphorescent light-emitting layer on the surface of at least one layer of this light-transmitting light-transmitting resin layer, flame resistance and flame penetration resistance are achieved. An excellent light ceiling lighting shade can be obtained.

  In the optical ceiling lighting shade of the present invention, the phosphorescent light emitting layer is 1). Fiber fabric / light-transmitting translucent resin layer / phosphorescent light-emitting layer, 2). Light-transmitting light-transmitting resin layer / fiber fabric / light-transmitting light-transmitting resin layer / light-collecting light-emitting 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-transmitting light-transmitting resin layer / light-accumulating light-emitting 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.

  In the optical ceiling lighting shade of the present invention, it is preferable that the phosphorescent light emitting layer contains a fluorescent whitening compound in combination with the phosphorescent particles in order to further increase the light emission luminance of the phosphorescent light emitting layer. 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 optical ceiling lighting shade may be clouded.

In the optical ceiling lighting shade of the present invention, the light-transmitting translucent resin layer has a dot-like near-ultraviolet diffuse reflection pattern formed by a translucent paint containing silica on the surface , or the near-ultraviolet diffuse reflection pattern and the diffuse light reflection. From the viewpoint of improving the light emission luminance of the phosphorescent light emitting layer, it is preferable to have particles. The light that has entered from the end cross section of the light-transmitting light-transmitting resin layer is scattered in the surface direction of the light-transmitting light-transmitting resin layer due to the presence of the near-ultraviolet diffuse reflection pattern, whereby the light-diffusing laminated body emits light. The near-UV diffused reflection pattern is a dot-like pattern 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. It can be formed by a known printing method such as screen printing, gravure printing, ink jet printing or the like using a paint (ink) having transparency and light transmittance, or by embossing three-dimensional unevenness. The paint having light reflectivity and light transmissivity is a translucent paint containing silica in 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. 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 optical ceiling lighting shade of the present invention, the dots constituting the near-ultraviolet diffused 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. This is preferable from the viewpoints of light propagation 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 occupation ratio of the near-ultraviolet diffuse reflection pattern area (total area of all dots) in the light-transmitting translucent resin layer is 25 to 75% on the condition that the light transmittance of the phosphorescent light emitting layer is not attenuated by 30% or more. In particular, it is preferably 40 to 60%.

  In addition, the light-transmitting light-transmitting resin layer may contain light diffuse reflection particles dispersed throughout the light-transmitting light-transmitting resin layer. 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 optical ceiling lighting shade of the present invention, it is preferable from the viewpoint of aesthetic sustainability that an antifouling layer is provided on the surfaces of the light-transmitting translucent resin layer and the phosphorescent light-emitting layer. The antifouling layer has an effect of suppressing the adhesion of dust dirt on the light ceiling lighting shade, 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 optical ceiling lighting shade of the present invention can be maintained for a long period of time also by forming a dirty layer.

The light ceiling lighting shade of the present invention preferably has flame retardancy or non-flammability as defined by the Fire Service Law or the Building Standard Law. For this reason, the light diffusing laminate used in the light ceiling lighting shade system In the exothermic test (ASTM-E1354: corn calorimeter test method) in which radiant heat of 50 kW / m ² is irradiated 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 that it has nonflammability which satisfies 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 optical ceiling lighting shade system according to the present invention includes a non-colored fiber cloth as a base material, a light-transmitting light-transmitting resin layer provided on at least one side of the fiber cloth, and the light-transmitting light-transmitting resin A translucent paint in which light-emitting diodes are arranged facing the end cross section of a light-diffusing laminate having a phosphorescent light-emitting layer provided on at least one surface of the layer, and the light-transmitting translucent resin layer contains silica And a phosphorescent whitening compound having a phosphorescent light-emitting particle having a phosphorescent light-emitting layer and a phosphorescent light-emitting layer having a maximum absorption in a near-ultraviolet region of 400 to 450 nm. In combination. The light emitting diode (LED) is particularly preferably a black light LED capable of emitting near ultraviolet rays of 300 to 400 nm, and the near ultraviolet rays emitted to the end cross section of the light diffusing laminate are transmitted through the light transmitting translucent resin layer. Phosphorescence emission of the entire surface of the phosphorescent light emitting layer is excited by light scattering in the direction of the surface of the phosphorescent light emitting layer and surface emission. Simultaneously with this excitation, the fluorescent whitening compound contained in the phosphorescent light emitting layer also excites the fluorescence emission, so that the optical ceiling illumination shade system 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. Since the near-ultraviolet radiation from the near-ultraviolet light emitting diode equipped in the optical ceiling illumination shade system of the present invention does not have luminance for the LED lighting system of such a signboard, the inside of the light-transmitting translucent resin layer is not provided. Even if it is radiated and diffused and is reflected on the surface of the light-transmitting translucent resin layer, it does not have an illumination action. In the optical ceiling lighting shade system according to the present invention, the phosphorescent light contained in the phosphorescent light emitting layer is obtained by causing the near-ultraviolet ray having no surface reflected luminance to act on the phosphorescent light emitting layer adjacent to the light transmitting translucent resin layer. This is a function of photoexciting the luminescent particles to emit phosphorescence, and in particular, by containing the fluorescent whitening compound having the maximum absorption in the near ultraviolet region of 400 to 450 nm in the luminous phosphor layer, The effect of dramatically improving the luminance of phosphorescent light emission is obtained. The near ultraviolet light emitting diode is installed at least one side of the optical ceiling lighting shade system unit 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 irradiation 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 the near-ultraviolet light emitting diodes can be arbitrarily set according to the size per unit of the optical ceiling lighting shade system and the illuminance level required 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 optical ceiling lighting shade system of the present invention comprises an optical ceiling by arbitrarily combining a plurality of the system units.

  The emergency light illumination method for an optical ceiling lighting shade according to the present invention includes a near-ultraviolet light emitting diode, and the above-mentioned optical ceiling lighting shade system equipped with a battery. The phosphorescent light-emitting layer that radiates and diffuses in the light-transmitting light-transmitting resin layer and reflects the surface to the surface of the light-transmitting light-transmitting resin layer, and the near-ultraviolet light reflected by this surface is adjacent to the light-transmitting light-transmitting resin layer Is a method in which phosphorescent light is emitted by photoexciting phosphorescent particles contained in the phosphorescent light emitting layer, and in particular, the phosphorescent light emitting layer is used in combination with a fluorescent whitening compound having maximum absorption in the near ultraviolet 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, the emergency lighting using the white light emission which has not been conventionally obtained with the phosphorescent particles as a light source. And it makes it possible to be obtained.

  The ceiling lighting design by giving a picture, a photograph, a character, a symbol, a pattern, etc. to the optical ceiling lighting shade of this invention can be made arbitrary. 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 optical ceiling lighting shade of the present invention, inkjet printing by outputting image data processed by a computer is particularly preferable because it does not impair the light transmission.

  Hereinafter, the optical ceiling illumination shade of the present invention will be specifically described. FIGS. 1-4 represent the cross section of the example of the light diffusive laminated body (2) used for the optical ceiling illumination shade (1) of this invention, The light diffusable laminated body (2) of FIG. Using a 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 a phosphorescent light-emitting layer is provided on at least one surface of the light-transmitting translucent resin layer. (5) is provided. The light diffusing laminate (2) of FIG. 2 is provided with a light-transmitting translucent resin layer (4) on both sides of a non-colored fiber fabric (3) as a base material, and light on only one side. A phosphorescent light emitting layer (5) is provided on the surface of the propagating translucent resin layer. The light diffusing laminate (2) in FIG. 3 is an inversion of the light diffusing laminate in FIG. The light diffusing laminate (2) in FIG. 4 is provided with a non-colored fiber fabric (3) as a base material, and provided with a light-transmitting light-transmitting resin layer (4) on both surfaces of the fiber fabric. This is a five-layer structure in which a phosphorescent light emitting layer (5) is provided on the photo resin layer (4).

  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 has a light-transmitting translucent resin layer (4a) having a light diffuse reflection pattern (6) on one side of the fiber fabric using a non-colored fiber fabric (3) as a base material. ) And a phosphorescent light emitting layer (5) is provided on the light transmissive translucent resin layer (4c). The light diffusive laminate (2) in FIG. 6 is a light-transmitting translucent resin layer (4b) having an uncolored fiber fabric (3) as a base material and light diffusely reflecting particles (7) on one side of the fiber fabric. And the phosphorescent light emitting layer (5) is provided on the light transmitting translucent resin layer (4b).

  7 and 8 show the optical ceiling lighting shade system of the present invention and its emergency lighting method. The light diffusive laminate (2) in FIGS. 7 and 8 will be described by taking the embodiment of FIG. 1 as an example, but an example of the optical ceiling lighting shade system of the present invention is an inversion of the embodiment of FIG. The same applies to the modes of FIGS. 2, 3, and 4. FIG. 7 shows an embodiment in which the light diffusing laminate (2) of FIG. 1 is used for an illumination shade. The side of the phosphorescent light emitting layer (5) in the light diffusing laminate (2) of FIG. ) To be inside the optical ceiling lighting shade system, and the side surface of the fiber fabric (3) is the outer side surface of the optical ceiling lighting shade system. 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 light ceiling lighting shade 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. The light emitting diode is in an OFF state. (8a) FIG. 8 is a diagram showing a power failure state in which the fluorescent lamp is turned off (9b) in the optical ceiling illumination shade system 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 ceiling lighting shade system (10) of the present invention, the light diffusing laminate is provided. The near-ultraviolet rays that are emitted from the light emitting diode (8b) and reflected and diffused in the light-transmitting translucent resin layer (4) by the lighting (8b) of the light emitting diode provided at the end of (2) (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 the above, phosphorescent luminous particles manufactured by Easy Bright Co., Ltd .: No. EZCB-50E (Sr4Al14O25: EU, Dy) was blended in an amount of 40% by mass with respect to the solid content of ink, and a fluorescent whitening compound (trademark: Uvitex) OB: Using a composition containing 0.2% by mass of 2,5′-bis [(5-tert-butylbenzoxazolyl (2)) thiophene] manufactured by Ciba Specialty Chemicals, based on the solid content of the ink. The phosphorescent light-emitting layer (5) having a thickness of 0.5 mm was formed by screen printing (the combined use of phosphorescent particles: 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. On one side of this glass fiber fabric (3), the light diffuse reflection pattern (6) forming surface side in the light-transmitting translucent resin layer (4) obtained by 1) and 2) above is laminated and integrated, and FIG. A light diffusing laminate (2) shown was obtained.
4). A near ultraviolet light emitting diode (8) (NSPU510CS manufactured by Nichia Corporation) on the side end of the light diffusing laminate (2) obtained in 3) and on the side end facing the side end. 125 units of diameter φ5mm: peak wavelength 375nm) arranged at intervals of 7mm per side edge of light diffusing laminate (2) and connected to emergency battery 1 unit of light ceiling lighting shade system As a result, four fluorescent lamps (9) (36 W / 40 type) were mounted per unit. The light ceiling lighting shade system (10) has a glass fiber fabric (3) as an exterior, and the interior of the light diffusing laminate (2) emits light uniformly in the appearance observation by lighting a fluorescent lamp. Satisfactory lighting effect was demonstrated as an optical ceiling lighting shade (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 .

1). An uncolored glass fiber fabric (3) imparted with the same water repellency as in Example 1 was used as a substrate. A 0.15 mm thick polyvinyl chloride resin composition layer (100 parts by weight of PVC, 45 parts by weight of a phthalic acid plasticizer, 20 parts by weight of an aromatic phosphate ester, a barium based composite metal stabilizer 2 on both surfaces of this glass fiber fabric. Mass part) was provided, and the light-transmitting translucent resin layer (4) was formed. One of the light-transmitting translucent resin layers is formed with the same light irregular reflection pattern (6) as that of Example 1.
2). Next, on the light transmitting translucent resin layer (4) surface side having the light irregular reflection pattern (6), a 0.1 mm-thick polyvinyl chloride resin composition layer (PVC 100 parts by mass, phthalic acid plasticizer 45 parts by mass, 20 parts by mass of an aromatic phosphate, 2 parts by mass of a barium-based composite metal stabilizer, phosphorescent particles produced by Easy Bright Co., Ltd .: product number EZCB-50E (Sr ₄ Al ₁₄ O ₂₅ : EU, Dy) 40 parts by mass, fluorescence 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 combined use of phosphorescent particles: fluorescent whitening compound is a mass ratio of 100: 0.5.)
3). Near-ultraviolet light-emitting diode (8) (NSPU510CS manufactured by Nichia Corporation) on the side end of the light diffusing laminate (2) obtained in 2) and on the side end facing the side end. 125 units of diameter φ5mm: peak wavelength 375nm) arranged at intervals of 7mm per side edge of light diffusing laminate (2) and connected to emergency battery 1 unit of light ceiling lighting shade system As a result, four fluorescent lamps (9) (36 W / 40 type) were mounted per unit. This light ceiling lighting shade system (10) is used in the direction of FIG. 2 or FIG. 3, and the entire surface of the light diffusing laminate (2) emits light uniformly in the appearance observation by lighting the interior fluorescent lamp. Satisfactory lighting effect was demonstrated as an optical ceiling lighting shade (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.

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 both surfaces of the glass fiber fabric to form a light-transmitting translucent resin layer (4). One of the light-transmitting translucent resin layers was formed with the same light irregular reflection pattern (6) as in Example 1.
2). Next, a 0.1 mm-thick fluorine-based resin composition layer (100 parts by mass of PVDF, photoluminescent particles manufactured by Easy Bright Co., Ltd.) on the side of the light-transmitting translucent resin layer (4) having the light irregular reflection pattern (6): No. _{EZCB-50E (Sr 4 Al 14} O 25: EU, Dy) 40 parts by weight, fluorescent brightening 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 combined use of phosphorescent particles: fluorescent whitening compound is a mass ratio of 100: 0.5.)
3). Near-ultraviolet light-emitting diode (8) (NSPU510CS manufactured by Nichia Corporation) on the side end of the light diffusing laminate (2) obtained in 2) and on the side end facing the side end. 125 units of diameter φ5mm: peak wavelength 375nm) arranged at intervals of 7mm per side edge of light diffusing laminate (2) and connected to emergency battery 1 unit of light ceiling lighting shade system As a result, four fluorescent lamps (9) (36 W / 40 type) were mounted per unit. This light ceiling lighting shade system (10) is used in the direction of FIG. 2 or FIG. 3, and the entire surface of the light diffusing laminate (2) emits light uniformly in the appearance observation by lighting the interior fluorescent lamp. Satisfactory lighting effect was demonstrated as an optical ceiling lighting shade (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.

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 light ceiling lighting shade (1) obtained by omitting the compounding of the fluorescent whitening compound is phosphorescent light emitted by the near-ultraviolet auxiliary light emitted from the diode (8) that is turned on when the fluorescent lamp is turned off. Although the light emission brightness of the layer is increased, it is a blue-green phosphorescent light emission with a short illumination distance, the light emission brightness immediately after the power failure is 464 mcd / m ² , and after 30 minutes, the light emission brightness is attenuated to 293 mcd / m ² , and the darkness and light emission The disparity with the body increased, making it 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.

Although the optical ceiling lighting shade (1) obtained in Comparative Examples 2 to 6 increases the light emission luminance of the phosphorescent light emitting layer due to near ultraviolet rays emitted from the diode (8) that is turned on by starting the battery device when the fluorescent lamp is turned off, It is blue-green phosphorescent light emission with a short illumination distance. The light emission luminance immediately after a power failure decreases to 400 mcd / m ² level, and after 30 minutes, the light emission luminance attenuates to 300 mcd / m ² level, and the disparity between the dark and the light emitter increases. Therefore, it was inappropriate as an emergency light source.

As is apparent from Examples 1 to 3 and Comparative Examples 1 to 6, the optical ceiling lighting shade and the optical ceiling lighting shade system of the present invention quickly provide a ceiling lighting function by a special phosphorescent layer during a power failure. The entrance, lounge, and party venues of the hotel are capable of sustaining energy-saving and long-lasting, brilliant illumination light that is similar to that of a white fluorescent lamp, which has never been seen before. Large ceiling facilities in office buildings, ceremonial halls, station buildings, airport facilities, underground shopping streets, large commercial facilities, various public facilities, etc. It is suitable for an optical ceiling lighting shade in an elevator car and an optical ceiling lighting shade in a railway vehicle.

The figure which shows the structural example of the light diffusable laminated body for optical ceiling lighting shades The figure which shows the structural example of the light diffusable laminated body for optical ceiling lighting shades The figure which shows the structural example of the light diffusable laminated body for optical ceiling lighting shades The figure which shows the structural example of the light diffusable laminated body for optical ceiling lighting shades The figure which shows the example of formation of the near-ultraviolet ray irregular reflection action part incidental to a light propagation translucent resin layer in a light diffusive laminate The figure which shows the example of formation of the near-ultraviolet ray irregular reflection action part incidental to a light propagation translucent resin layer in a light diffusive laminate The figure which shows the normal use state of fluorescent lamp ON in the optical ceiling lighting shade system of this invention The figure which shows the emergency light function at the time of a power failure in the optical ceiling lighting shade system of this invention The figure which shows the example of formation of the near-ultraviolet diffused reflection action part provided to a light- transmitting translucent resin layer in a light diffusive laminate The figure which shows arrangement | positioning of a near-ultraviolet light emitting diode in the optical ceiling lighting shade system of this invention.

DESCRIPTION OF SYMBOLS 1 Optical ceiling lighting shade 2 Light diffusable laminated body 3 Fiber fabric (base material)
4 Light-transmitting translucent resin layer
4a Light-transmitting translucent resin layer provided with a near-ultraviolet diffusely reflecting portion
4b Light Propagating Translucent Resin Layer 5 Provided with Near UV Diffuse Reflecting Action Section 5 Light Storage Light Emitting Layer 6 Near UV Diffuse Reflection Pattern 7 Light Diffuse Reflective Particle 8 Near UV Light Emitting Diode
8a OFF state
8b ON state 9 Fluorescent lamp (or other lighting)
9a ON state
9b Power outage 10 Light ceiling lighting shade system

Claims (13)

Using a non-colored fiber fabric as a base material, a light-transmitting light-transmitting resin layer is provided on one or more sides of the fiber fabric, and a phosphorescent light-emitting layer is provided on at least one surface of the light-transmitting light-transmitting resin layer. A light diffusing laminated body provided, wherein the light transmissive translucent resin layer has a surface of the light transmissive translucent resin layer having a dot-like near-ultraviolet diffused reflection pattern formed of a translucent paint containing silica. The total area occupancy ratio of all dots is 25 to 75%, and the phosphorescent light-emitting layer has colored phosphorescent phosphorescent particles and absorption in the near ultraviolet region of 400 to 450 nm. An optical ceiling lighting shade comprising a compound in combination. 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 optical ceiling illumination shade according to claim 1, wherein the light ceiling illumination shade is one or more selected from a spiro compound derivative and a heterocyclic compound-substituted pyrene derivative. The optical ceiling lighting shell according to claim 1 or 2, 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. -De. The light ceiling illumination shade according to any one of claims 1 to 3, wherein the light diffusing laminate is for an elevator car ceiling. The light ceiling illumination shade according to any one of claims 1 to 3, wherein the light diffusing laminate is for a railcar interior ceiling. Using a non-colored fiber fabric as a base material, a light-transmitting light-transmitting resin layer is provided on one or more sides of the fiber fabric, and a phosphorescent light-emitting layer is provided on at least one surface of the light-transmitting light-transmitting resin layer. In the light diffusive laminate provided, the light-transmitting light-transmitting resin layer has a dot-like near-ultraviolet diffused reflection pattern formed of a translucent paint containing silica on the surface of the light-transmitting light-transmitting resin layer. A total area occupancy ratio of 25 to 75% of all dots, and the phosphorescent light-emitting layer further comprises colored phosphorescent phosphorescent phosphorescent particles and a fluorescent whitening compound having absorption in the near ultraviolet region of 400 to 450 nm. And a near-ultraviolet light emitting diode is arranged facing the end cross section of the light diffusing laminate, and has an emergency light function. The light having an emergency light function according to claim 6, 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. Ceiling lighting shade system. The light ceiling lighting shade system having an emergency light function according to claim 6 or 7, wherein the light diffusing laminate is for an elevator car ceiling. The light ceiling illumination shade system having an emergency light function according to claim 6 or 7, wherein the light diffusing laminate is for a ceiling in a railway vehicle. A light-transmitting translucent resin layer having a dot-like near-ultraviolet diffused reflection pattern formed of a semi-transparent paint containing silica is provided on one or more sides of the fiber fabric using a non-colored fiber fabric as a base, and In the light diffusive laminate in which a phosphorescent light emitting layer is provided on the surface of at least one layer of the light propagating translucent resin layer, the phosphorescent light emitting layer includes colored phosphorescent phosphorescent phosphorescent particles and 400 to 450 nm. The light-transmitting light-transmitting resin layer, which is used in combination with a fluorescent whitening compound having absorption in the near-ultraviolet region, and further emits light from the near-ultraviolet light-emitting diode arranged opposite to the end cross section of the light-diffusing laminate. By irradiating the end cross section of the light-carrying light transmitting resin layer, near-ultraviolet rays are emitted from the entire surface of the light-transmitting translucent resin layer, thereby causing the entire surface of the phosphorescent light-emitting layer to emit white fluorescent light. Emergency lighting method of de. The optical ceiling illumination shade according to claim 10, wherein the phosphorescent light emitting layer contains the phosphorescent luminescent particles and the fluorescent whitening compound in combination at a mass ratio of 100: 0.01 to 100: 5. Emergency lighting method. The emergency light illumination method for an optical ceiling illumination shade according to claim 10 or 11, wherein the light diffusing laminate is for an elevator car ceiling. The emergency light illumination method for an optical ceiling illumination shade according to claim 10 or 11, wherein the light diffusing laminate is for a railcar interior ceiling.