WO2010113771A1 - Réflecteur de lumière, dispositif d'éclairage et dispositif d'éclairage permettant de cultiver des plantes - Google Patents

Réflecteur de lumière, dispositif d'éclairage et dispositif d'éclairage permettant de cultiver des plantes Download PDF

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Publication number
WO2010113771A1
WO2010113771A1 PCT/JP2010/055274 JP2010055274W WO2010113771A1 WO 2010113771 A1 WO2010113771 A1 WO 2010113771A1 JP 2010055274 W JP2010055274 W JP 2010055274W WO 2010113771 A1 WO2010113771 A1 WO 2010113771A1
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Prior art keywords
light
layer
reflector
wavelength region
light reflector
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PCT/JP2010/055274
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English (en)
Japanese (ja)
Inventor
智裕 水野
一迅 人見
賢一 吉田
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積水化成品工業株式会社
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Priority claimed from JP2009083586A external-priority patent/JP2010234583A/ja
Priority claimed from JP2009171459A external-priority patent/JP2011028914A/ja
Priority claimed from JP2009229037A external-priority patent/JP2011075944A/ja
Priority claimed from JP2010036586A external-priority patent/JP5379042B2/ja
Application filed by 積水化成品工業株式会社 filed Critical 積水化成品工業株式会社
Priority to CN201080014218.2A priority Critical patent/CN102365564B/zh
Publication of WO2010113771A1 publication Critical patent/WO2010113771A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/26—Reflecting filters

Definitions

  • the present invention relates to a light reflector that can emit, as reflected light, light having a wavelength distribution different from the wavelength distribution of light emitted from a light source, and an illumination device and plant cultivation illumination using the light reflector Relates to the device.
  • a highly reflective light reflector is used behind the light source. This reflector is silver or white and reflects in the visible light region without changing the spectrum of light emitted from the light source.
  • Patent Literature 1 proposes an outdoor lighting device that includes a plurality of white LEDs (light emitting diodes) that light white light and a plurality of blue LEDs that light blue light. Yes.
  • This outdoor luminaire is intended to improve the crime prevention effect by utilizing the sedative effect that the blue light radiated from the blue LED acts on the human parasympathetic nerve to calm emotions. Need to be used in a large amount, and there is a problem of high cost.
  • Patent Document 2 proposes a color correction illumination device that includes a fluorescent lamp as a white light source and a red light emitting diode as a red light source, and is illuminated with mixed light of the fluorescent lamp and the red light emitting diode. Has been.
  • the color correction illumination device performs color correction using a red light emitting diode with a small amount of light with respect to a fluorescent lamp, the color change of light emitted from the illumination device is slight and red.
  • the visual effects of lighting are not as good as expected, coupled with the low human visibility.
  • Patent Document 3 proposes a plant cultivation apparatus using a fluorescent lamp. Since the growth of plants greatly depends on the wavelength of light irradiated on the plants, in the case of fluorescent light that does not contain so much light in the wavelength range that the plant absorbs, the intensity of the fluorescent light is increased. There is a problem that power consumption is increased, and there is a problem that it becomes difficult to control the cultivation atmosphere temperature of the plant due to the heat generated by the fluorescent lamp.
  • Patent Documents 4 and 5 propose a plant growing apparatus using red LEDs and blue LEDs.
  • LEDs are inferior in light diffusibility, it is difficult to uniformly irradiate the plants with light.
  • the use of LEDs also has the problem of high costs.
  • the present invention relates to a light reflector capable of reflecting light from a light source such as a fluorescent lamp and irradiating light having a wavelength distribution different from the wavelength distribution of the light emitted from the light source, and the light reflector.
  • the illumination device used and the plant cultivation illumination device are provided.
  • the light reflector of the present invention is characterized in that light having a wavelength distribution different from the wavelength distribution of the light emitted from the light source is emitted as reflected light.
  • the light reflector A is not particularly limited as long as light having a wavelength distribution different from the wavelength distribution of the light emitted from the light source is emitted as reflected light.
  • the light reflector A includes a light emitter, a light reflector, and the like.
  • a light reflector in which a light emitter layer 2 containing a light emitter emitting light in the visible light region is laminated and integrated on one surface of the light reflective layer 1 as shown in FIG.
  • a light reflector comprising a light emitter layer containing either one or both of light emitters having an emission spectrum peak is more preferable.
  • a plate-like light reflector is shown as an example.
  • the light reflecting layer 1 and a light emitter that is laminated and integrated on one surface (first surface) of the light reflecting layer 1 and has an emission spectrum peak in a wavelength region of 400 to 470 nm, or a wavelength of 570 to 700 nm
  • the light reflector provided with the light emitter layer 2 containing either or both of the light emitters having the emission spectrum peak in the wavelength region will be described in detail.
  • the light reflecting layer 1 is not limited as long as it can reflect light in a wavelength region emitted by the light emitter contained in the light emitter layer 2 described later, and is preferably contained in the light emitter layer 2. It is sufficient that the light in the wavelength region absorbed by the light emitter can be further reflected.
  • the light reflecting layer 1 reflects the light in the wavelength region emitted by the light emitter toward the light emitter layer 2, thereby increasing the amount of light having a specific wavelength emitted from the light reflector.
  • the light reflectivity can be improved and the effect of changing the hue of the reflected light can be improved.
  • the light reflection layer 1 can further reflect light in the wavelength region absorbed by the light emitter contained in the light emitter layer 2, the light reflector 2 transmits through the light emitter layer 2 and is absorbed by the light emitter.
  • the light that has not been reflected can be reflected in the direction of the illuminant layer 2 by the light reflecting layer 1 and incident again on the illuminant layer 2 to be absorbed by the illuminant.
  • the effect of changing the light reflectivity of the body and the hue of the reflected light can be further improved.
  • the total light reflectance of the light reflection layer 1 is preferably 80% or more, and more preferably 85% or more.
  • the total light reflectance of the light reflecting layer 1 refers to a value measured according to JIS Z8722.
  • the average light transmittance in the wavelength region of 360 to 740 nm in the light reflecting layer 1 is high, the light emitted from the light emitting layer is transmitted through the light reflecting layer, and the light reflectivity of the light reflecting member is reduced. It is preferably 10% or less, more preferably 1% or less, and particularly preferably 0%.
  • the average light transmittance in the wavelength region of 360 to 740 nm in the light reflecting layer is a value measured according to JIS Z8722.
  • Such a light reflecting layer 1 is preferably a synthetic resin sheet, and more preferably a thermoplastic resin sheet.
  • a light reflecting non-foamed sheet or foamed sheet containing particles such as titanium oxide or silica, or a sheet made of a mixed resin obtained by mixing mutually incompatible synthetic resins is stretched.
  • the light reflection layer 1 may be a layer obtained by appropriately selecting the above non-foamed sheet or foamed sheet and stacking and integrating them.
  • the light reflecting layer 1 is configured such that the non-foamed sheet 1a and the foamed sheet 1b are laminated and integrated, and the non-foamed sheet 1a is on the light emitter layer 2 side.
  • the strength, self-shaping property or moldability can be imparted to the light reflecting layer.
  • the foamed sheet 1b preferably contains titanium oxide.
  • the amount is preferably 5 to 50 parts by weight, more preferably 10 to 40 parts by weight based on 100 parts by weight of the synthetic resin.
  • the synthetic resin constituting the light reflecting layer 1 is not particularly limited, and examples thereof include polyolefin resins such as low density polyethylene, high density polyethylene, ethylene- ⁇ -olefin copolymer, polypropylene, and cyclic polyolefin, polyethylene terephthalate.
  • Polyester resins such as polyethylene naphthalate, polybutylene terephthalate and polylactic acid, polyamide resins such as nylon-6 and nylon-6,6, polystyrene resins such as polystyrene, ABS resin and AS resin, polycarbonate, polyester carbonate, etc.
  • thermoplastic resins such as chlorinated resins such as polycarbonate resins, polyvinyl chloride and polyvinylidene chloride, and acrylic resins such as polymethyl methacrylate and polyethyl methacrylate.
  • a synthetic resin may be used independently or 2 or more types may be used together.
  • the ⁇ -olefin include propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-nonene and 1-decene.
  • Examples of the particles contained in the light-reflective non-foamed sheet or foamed sheet include zinc oxide, zinc white, talc, calcium carbonate, titanium oxide, silica, and the like, and the difference in refractive index from the synthetic resin is large. Titanium oxide having high reflectivity is preferable.
  • Titanium oxide includes rutile type, anatase type, and brucite type, but rutile type titanium oxide is preferable. Since titanium oxide usually degrades the resin by its photocatalytic action, it is preferable to subject the titanium oxide to a surface treatment.
  • the content of titanium oxide in the synthetic resin sheet is small, the light reflection performance of the light reflector is lowered. On the other hand, when the content is large, the lightness of the light reflector is also lowered. Therefore, 30 to 200 g / m 2 is preferable. 40 to 150 g / m 2 is more preferable.
  • the content of titanium oxide in the synthetic resin sheet is included in the plurality of synthetic resin sheets. The total content of titanium oxide.
  • a foam layer may be laminated and integrated on the other surface (second surface) of the light reflecting layer of the light reflector in order to give the light reflector strength, self-shape retention or moldability. . Since the synthetic resin constituting the foam layer is the same as the synthetic resin constituting the light reflecting layer, description thereof is omitted.
  • the phosphor layer 2 contains a phosphor that emits light in the visible light region (360 to 740 nm wavelength region) in a synthetic resin.
  • the luminous body layer 2 is either one or both of a luminous body having an emission spectrum peak in the wavelength region of 400 to 470 nm and a luminous body having an emission spectrum peak in the wavelength region of 570 to 700 nm in the synthetic resin. It is preferable to contain.
  • the light emitter layer 2 contains either or both of a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm and a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm. The case will be described in detail.
  • the light emitter absorbs a part of the incident light incident on the light emitter layer 2, and each light emitter has a light emission region, that is, a wavelength region of 400 to 470 nm or a wavelength region of 570 to 700 nm. Emits light in the wavelength region.
  • the light emitter included in the light emitter layer 2 emits light in the wavelength region of 400 to 470 nm (blue light) or light in the wavelength region of 570 to 700 nm (red light).
  • blue light blue light
  • red light red light
  • the reflected light reflected by the reflector either one or both of blue light and red light is emphasized as compared with incident light.
  • the light emitter layer 2 contains only one of a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm and a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm. However, it may contain both a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm and a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm. Whether the luminescent material having the emission spectrum peak in the wavelength region of 470 nm, the luminescent material having the emission spectrum peak in the wavelength region of 570 to 700 nm, or both of them is incident on the luminescent material layer 2 What is necessary is just to adjust suitably according to the spectrum of the incident light to perform.
  • the light emitter layer 2 contains a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm or a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm, in the reflection spectrum of the body, the maximum light reflectance in the wavelength region of 400 ⁇ 470 nm, the difference between the minimum light reflectance in the wavelength region of 470 ⁇ 570 nm and delta 1, and the maximum light reflectance in the wavelength region of 570 ⁇ 700 nm it is preferable when the difference between the minimum light reflectance in the wavelength region of 470 ⁇ 570 nm and delta 2, delta 1 or delta 2 is not less than 1%.
  • ⁇ 1 or ⁇ 2 in the reflected light of the light reflector, blue light or red light having inferior visibility compared to green light can be obtained. It becomes easier for human eyes to recognize.
  • the light emitter layer 2 contains a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm or a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm
  • the maximum light reflectance in the wavelength region of 400 to 470 nm or the maximum light reflectance in the wavelength region of 570 to 700 nm exceeds 100%.
  • the light emitter layer 2 contains a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm and a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm, in the reflection spectrum of the body, the maximum light reflectance in the wavelength region of 400 ⁇ 470 nm, the difference between the minimum light reflectance in the wavelength region of 470 ⁇ 570 nm and delta 1, and the maximum light reflectance in the wavelength region of 570 ⁇ 700 nm
  • ⁇ 1 and ⁇ 2 are preferably 1% or more.
  • the light emitter layer 2 contains a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm and a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm
  • the maximum light reflectance in the wavelength region of 400 to 470 nm and the maximum light reflectance in the wavelength region of 570 to 700 nm exceed 100%.
  • the maximum light reflectance in the wavelength region of 360 to 740 nm is preferably 100% or more.
  • the synthetic resin constituting the light emitter layer 2 is the same as the synthetic resin constituting the light reflecting layer 1, and therefore the description thereof is omitted.
  • the synthetic resin constituting the light emitter layer 2 and the synthetic resin constituting the light reflecting layer 1 may be different.
  • a pigment or a dye that generates fluorescence or phosphorescence is used as the illuminant contained in the illuminant layer 2.
  • Fluorescence refers to light that is emitted when transitioning from an excited singlet state to a ground state.
  • phosphors using this phenomenon are widely used as fluorescent pigments and fluorescent dyes.
  • Phosphorescence refers to light emitted when transitioning from the excited triplet state to the ground state. Industrially, phosphors utilizing this phenomenon are widely used as phosphorescent pigments and phosphorescent dyes. Yes.
  • An illuminant having an emission spectrum peak in the wavelength region of 400 to 470 nm, or an illuminant having an emission spectrum peak in the wavelength region of 570 to 700 nm includes an organic illuminant having an organic dye structure, an inorganic type There are inorganic light emitters having the following dye structure.
  • organic phosphors examples include xanthene, coumarin, perylene, naphthalimide, acridine, thioflavine, diaminostilbene, imidazole, thiazole, oxazole, pyrazoline, anthraquinone, and methine.
  • phosphors having an organic dye structure such as benzopyran, thioindigo, azo, or phthalocyanine.
  • the organic light emitters may be used alone or in combination of two or more.
  • the inorganic phosphor examples include inorganic pigment structures such as sulfides such as ZnS and (ZnCd) S, and oxides such as Zn 2 SiO 4 , Cd 2 B 2 O 5 , YVO 3 and CaWO 4.
  • inorganic pigment structures such as sulfides such as ZnS and (ZnCd) S, and oxides such as Zn 2 SiO 4 , Cd 2 B 2 O 5 , YVO 3 and CaWO 4.
  • the light-emitting body which has is mentioned.
  • An inorganic type light-emitting body may be used independently, or 2 or more types may be used together.
  • a luminescent material having an emission spectrum peak in the wavelength region of 400 to 470 nm that is, a pigment or dye that absorbs light in the ultraviolet region and emits fluorescence or phosphorescence in the wavelength region of 400 to 470 nm
  • it is a product from Clariant.
  • a light emitter having an emission spectrum peak in the light wavelength region of 570 to 700 nm that is, a pigment or dye that absorbs light in the ultraviolet region or visible light region and emits fluorescence or phosphorescence in the wavelength region of 570 to 700 nm.
  • the amount is preferably 0.01 parts by weight or more with respect to 100 parts by weight of the synthetic resin. 2 does not change, and the concentration may be quenched depending on the concentration and dispersion of the illuminant. Therefore, it is preferably 65 parts by weight or less, more preferably 30 parts by weight or less, based on 100 parts by weight of the synthetic resin. Part by weight or less is particularly preferred.
  • the light emitter layer 2 may contain a light reflective filler.
  • the light-reflective filler is not limited as long as it can reflect light, but the wavelength region of the reflected light reflected at the interface between the synthetic resin and the light-reflective filler constituting the light emitter layer, and the light emitter It is preferable to select the light reflective filler so that the light absorption wavelength region or the light emission wavelength region in the luminescent material contained in the layer overlaps.
  • the light emitter layer 2 contains the light reflective filler, the light incident on the light emitter layer 2 is converted into the interface between the synthetic resin constituting the light emitter layer 2 and the light reflective filler. , And the light emitter can absorb a larger amount of light and emit light in the visible light region.
  • the wavelength range of the reflected light reflected at the interface between the synthetic resin constituting the phosphor layer and the light reflective filler overlaps with the light absorption wavelength region of the phosphor contained in the phosphor layer.
  • the wavelength range of the reflected light reflected at the interface between the synthetic resin constituting the light emitter layer and the light reflective filler overlaps with the light emission wavelength region of the light emitter contained in the light emitter layer.
  • Such a light-reflective filler is not particularly limited as long as it has light reflectivity, and examples thereof include synthetic resin particles and pigments having light reflectivity, and pigments are preferable, White pigments are more preferred.
  • the synthetic resin constituting the synthetic resin particles is not particularly limited as long as it is a synthetic resin having a refractive index different from the refractive index of the synthetic resin constituting the luminescent layer 2.
  • low density polyethylene Polyolefin resins such as high-density polyethylene, polypropylene and cyclic polyolefin, polyester resins such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate and polylactic acid, polyamide resins such as nylon-6 and nylon-6,6, polystyrene Polystyrene resins such as ABS resin and AS resin, polycarbonate resins such as polycarbonate and polyester carbonate, chlorine resins such as polyvinyl chloride and polyvinylidene chloride, polymethyl methacrylate, polyethyl methacrylate, etc.
  • Thermoplastic resins such as acrylic resins.
  • a synthetic resin may be used independently or 2 or more types may be used together.
  • the pigment is not particularly limited as long as it has a refractive index different from the refractive index of the synthetic resin constituting the luminescent layer 2, and examples thereof include white pigments such as zinc white, lead white, and titanium oxide.
  • white pigments such as zinc white, lead white, and titanium oxide.
  • Inorganic pigments such as red lead, yellow lead, zinc yellow, ultramarine blue, prussian blue, xanthene, coumarin, perylene, naphthalimide, acridine, thioflavine, diaminostilbene, imidazole, thiazole, oxazole
  • Organic pigments having a dye structure such as azo-type, pyrazoline-type, anthraquinone-type, methine-type, benzopyran-type, thioindigo-type, azo-type, phthalocyanine-type, etc.
  • White pigments such as zinc white, lead white and titanium oxide having performance are preferable.
  • the white pigment is not particularly limited.
  • Titanium oxide is preferable because it has a high refractive index and a large difference from the refractive index of the synthetic resin constituting the phosphor layer.
  • the synthetic resin constituting the light reflective filler and the light emitter layer are preferably 0.05 or more, more preferably 0.10 or more.
  • the content of the light reflective filler in the light emitter layer 2 is small, the light reflectivity in the light absorption wavelength region or the light emission wavelength region of the light emitter layer is lowered, and the amount of emitted light from the light emitter is reduced.
  • the light reflectivity of the light reflector may decrease, and if it is large, the amount of light incident on the light emitter layer is reduced, or the light emitted from the light emitter is less likely to be emitted outside the light emitter layer. Therefore, 0.05 to 50 parts by weight is preferable, 0.05 to 25 parts by weight is more preferable, and 0.1 to 10 parts by weight with respect to 100 parts by weight of the synthetic resin constituting the light emitting layer. Is particularly preferred.
  • a light reflective surface layer 3 may be laminated and integrated on one surface of the light emitting layer 2.
  • the surface layer 3 contains a synthetic resin and a light reflective filler. Specifically, the light reflective filler is contained in the synthetic resin.
  • the surface layer 3 limits the amount of light incident on the light emitting layer 2 by including a light reflective filler in the synthetic resin. It has been found that the illuminant contained in the illuminant layer 2 is deactivated when the total amount (cumulative amount) of the light absorbed by the illuminant reaches a certain amount and does not perform the light emitting action. by.
  • the average light transmittance in the wavelength region of 360 to 740 nm in the surface layer 3 is high, the amount of light incident on the light emitter layer increases, and the amount of light per unit time absorbed by the light emitter in the light emitter layer is reduced. As a result, the period in which the luminescent material exhibits a light emitting action is shortened, so 70% or less is preferable, 0.05 to 50% is more preferable, and 0.05 to 30% is particularly preferable.
  • the average light transmittance in the wavelength region of 360 to 740 nm in the surface layer 3 is a value measured according to JIS Z8722.
  • the surface layer 3 absorbs light limited by the surface layer 3 as much as possible by the light emitter in the light emitter layer 2 or emits light emitted from the light emitter as much as possible outside the light reflector from the surface layer 3.
  • the synthetic resin constituting the surface layer 3 and the light contained in the surface layer 3 in order to improve the light reflectivity of the light reflector and to improve the change in the hue of reflected light by the light reflector It is preferable that the wavelength region of the reflected light reflected at the interface with the reflective filler overlaps with the light absorption wavelength region or the emission wavelength region in the light emitter contained in the light emitter layer 2.
  • the wavelength region of the reflected light reflected at the interface between the synthetic resin constituting the surface layer 3 and the light-reflective filler overlaps with the light absorption wavelength region in the light emitter contained in the light emitter layer 2.
  • the light emitter in the light emitter layer 2 can absorb light efficiently and emit a large amount of light of a specific wavelength to enhance the light emitting action of the light emitter, thereby improving the light reflectivity and light reflection of the light reflector.
  • the hue of light reflected by the body can be changed more reliably.
  • the wavelength range of the reflected light reflected at the interface between the synthetic resin constituting the light emitter layer and the light reflective filler overlaps the light emission wavelength region of the light emitter contained in the light emitter layer.
  • the synthetic resin constituting the surface layer 3 is not particularly limited.
  • polyolefin resins such as low density polyethylene, high density polyethylene, polypropylene, ethylene- ⁇ -olefin copolymer, cyclic polyolefin, polyethylene terephthalate, Polyester resins such as polyethylene naphthalate, polybutylene terephthalate, polylactic acid, polyamide resins such as nylon-6, nylon-6,6, polystyrene resins such as polystyrene, ABS resin, AS resin, polycarbonate, polyester carbonate, etc.
  • thermoplastic resins such as polycarbonate resins, chlorinated resins such as polyvinyl chloride and polyvinylidene chloride, and acrylic resins such as polymethyl methacrylate and polyethyl methacrylate.
  • a synthetic resin may be used independently or 2 or more types may be used together.
  • the ⁇ -olefin include propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-nonene and 1-decene.
  • the light reflective filler is not particularly limited as long as it has light reflectivity, and examples thereof include synthetic resin particles and pigments having light reflectivity. Pigments are preferred, white pigments Is more preferable.
  • the synthetic resin constituting the synthetic resin particles is not particularly limited as long as it is a synthetic resin having a refractive index different from the refractive index of the synthetic resin constituting the surface layer 3, for example, low density polyethylene, Polyolefin resins such as high-density polyethylene, polypropylene, and cyclic polyolefin, polyester resins such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, and polylactic acid, polyamide resins such as nylon-6, nylon-6,6, polystyrene, Examples thereof include thermoplastic resins such as polystyrene resins such as ABS resin and AS resin, chlorine resins such as polyvinyl chloride and polyvinylidene chloride, and acrylic resins such as polymethyl methacrylate and polyethyl methacrylate.
  • a synthetic resin may be used independently or 2 or more types may be used together.
  • the pigment is not particularly limited as long as it has a refractive index different from that of the synthetic resin constituting the surface layer 3, and examples thereof include white pigments such as zinc white, lead white, and titanium oxide, lead Inorganic pigments such as red, yellow lead, zinc yellow, ultramarine blue, prussian blue, xanthene, coumarin, perylene, naphthalimide, acridine, thioflavine, diaminostilbene, imidazole, thiazole, oxazole Organic pigments having a pyrazoline-based, anthraquinone-based, methine-based, benzopyran-based, thioindigo-based, azo-based, or phthalocyanine-based hue structure, and the like, and white pigments are preferred.
  • white pigments such as zinc white, lead white, and titanium oxide
  • lead Inorganic pigments such as red, yellow lead, zinc yellow, ultramarine blue, prussian blue, xanthene, cou
  • the white pigment is not particularly limited.
  • Titanium oxide is preferable because it has a high refractive index and a large difference from the refractive index of the synthetic resin constituting the surface layer 3.
  • the interface between the light reflective filler and the synthetic resin constituting the surface layer is small. Since the light reflectivity in may be lowered, 0.05 or more is preferable, and 0.10 or more is more preferable.
  • the content of the light-reflective filler in the surface layer is small, the amount of light transmitted through the surface layer increases, and the amount of light absorbed by the light emitter in the light emitter layer increases per unit time.
  • the duration of the effect of changing the hue of the reflected light by the light reflector is shortened and the duration of the effect of changing the hue of the reflected light by the light reflector is shortened. Is less likely to be released out of the light reflector through the surface layer, so 0.05 to 50 parts by weight is preferable with respect to 100 parts by weight of the synthetic resin constituting the surface layer 3, and 0.05 to 25 parts by weight. Part is more preferable, and 0.1 to 20 parts by weight is particularly preferable.
  • the light reflecting layer 1, the light emitting layer 2 and the surface layer 3 are provided with a stabilizer such as a light stabilizer, an ultraviolet absorber, an antioxidant, a metal deactivator, and an antistatic agent within the range not impairing these physical properties.
  • a stabilizer such as a light stabilizer, an ultraviolet absorber, an antioxidant, a metal deactivator, and an antistatic agent within the range not impairing these physical properties.
  • An additive such as a flame retardant may be added.
  • Examples of the light stabilizer include bis (2,2,6,6-tetramethyl-4-piperidinyl) sebacate, bis (N-methyl-2,2,6,6-tetramethyl-4-piperidinyl) sebacate, Bis (1,2,2,6,6-pentamethyl-4-piperidinyl) -2- (3,5-di-t-butyl-4-hydroxybenzyl) -2-n-butylmalonate, tetrakis (2, 2,6,6-tetramethyl-4-piperidyl) -1,2,3,4-butane-tetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) -1,2 , 3,4-Butane-tetracarboxylate, (2,2,6,6-tetramethyl-4-piperidyl) -1,2,3,4-butane-tetracarboxylate and (2,2,6,6 -Tetramethyl-4 Tridecyl) -1
  • the content of the light stabilizer in the light reflecting layer 1, the light emitter layer 2 or the surface layer 3 is small, the resin deterioration of the light reflector cannot be suppressed.
  • Synthetic resin constituting the light reflecting layer 1, the light emitting layer 2, or the surface layer 3 because there is no change in the suppression effect and adverse effects such as reducing the light reflectivity of the light reflector by coloring the light stabilizer itself. 0.01 to 0.8 part by weight is preferable with respect to 100 parts by weight, and 0.05 to 0.5 part by weight is more preferable.
  • Examples of the ultraviolet absorber include 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- [2′-hydroxy-3 ′, 5′-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl].
  • -Benzotriazole 2- (2'-hydroxy-3 ', 5-di-t-butylphenyl) -benzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl)- 5-chlorobenzotriazole, 2- (2′-hydroxy-3 ′, 5′-di-t-butylphenyl) -5-chlorobenzotriazole, 2- (2′-hydroxy-3 ′, 5′-di- t-amyl) benzotriazole, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 2,2-methylenebis [4- (1,1,3,3-tetramethylbutane) Til) -6- (2N-benzotriazol
  • the content of the ultraviolet absorber in the light reflecting layer 1, the light emitter layer 2 or the surface layer 3 is small, the light reflecting property of the light reflector cannot be suppressed from being lowered. Since there is no change in the effect of suppressing the decrease in light reflectivity, 0.01 to 0.8 parts by weight with respect to 100 parts by weight of the synthetic resin constituting the light reflection layer 1, the light emitter layer 2 or the surface layer 3 Preferably, 0.05 to 0.5 part by weight is more preferable.
  • the maximum light reflectance in the wavelength region of 360 to 740 nm is preferably 100% or more in the reflection spectrum of the light reflector.
  • the maximum light reflectance in the wavelength region of 360 to 740 nm in the reflection spectrum of the light reflector is set at a set temperature of 50 ° C. and a set relative relative to JIS K7350-4. It is preferably 100% or more after 100 hours of accelerated exposure test conducted under the condition of 20% humidity.
  • the set temperature of 50 ° C. means that the temperature set in the accelerated exposure apparatus used for the accelerated exposure test is 50 ° C. That is, the accelerated exposure apparatus used in the accelerated exposure test stops heating by the heating member when the measured ambient temperature exceeds the set temperature, while heating by the heated member stops when the measured ambient temperature falls below the set temperature. It is configured to start, and the measured ambient temperature in the accelerated exposure apparatus may rise and fall around a set temperature. However, the measurement ambient temperature in the accelerated exposure apparatus must be such that the minimum temperature is 45 ° C. and the maximum temperature is 55 ° C.
  • the set relative humidity of 20% means that the relative humidity set in the accelerated exposure apparatus used for the accelerated exposure test is 20%. That is, the accelerated exposure apparatus used for the accelerated exposure test stops the humidification by the humidifying member when the relative humidity of the measurement atmosphere exceeds the set relative humidity, while the relative humidity of the measurement atmosphere is lower than the set relative humidity. Further, the relative humidity of the measurement atmosphere in the accelerated exposure apparatus may be raised or lowered around the set relative humidity. However, the relative humidity in the measurement atmosphere in the accelerated exposure apparatus must be such that the minimum relative humidity is 10% and the maximum relative humidity is 30%.
  • an accelerated exposure apparatus used for the accelerated exposure test an apparatus commercially available from Suga Test Instruments Co., Ltd. under the trade name “Sunshine Super Long Life Weather Meter WEL-SUN-HC / B type” can be used.
  • the method for producing the light reflector is not particularly limited.
  • a thermoplastic resin composition for a phosphor layer containing a thermoplastic resin and a phosphor is supplied to the first extruder and melt kneaded.
  • thermoplastic resin composition for a light reflecting layer containing a thermoplastic resin and the above particles is supplied to a second extruder, melt-kneaded, and the same die connecting the first and second extruders
  • the method for producing the light reflector is not particularly limited. For example, (1) a method for producing the light reflecting layer, the light emitting layer and the surface layer by coextrusion, and (2) a light reflecting property constituting the light reflecting layer.
  • a thermoplastic resin film constituting the light emitter layer is laminated and integrated on the light reflector having the same, and a light reflecting material having light reflectivity constituting the surface layer is laminated and integrated on the thermoplastic resin film.
  • a paint containing a light emitter constituting the light emitter layer is applied and dried, and further on the light emitter layer, It can be manufactured by a manufacturing method in which light reflectors having light reflectivity constituting a surface layer are laminated and integrated, and the thickness of each layer can be easily controlled and the productivity is high. It is preferable to manufacture by.
  • a thermoplastic resin composition for a light reflecting layer containing a thermoplastic resin and the above-mentioned particles is supplied to a first extruder and melt-kneaded, and a thermoplastic resin composition for a phosphor layer containing a thermoplastic resin and a phosphor.
  • thermoplastic resin composition for the surface layer containing the thermoplastic resin and the light-reflective filler is supplied to the third extruder and melt-kneaded.
  • thermoplastic resin composition for the light reflecting layer, the thermoplastic resin composition for the light emitter layer, and the thermoplastic resin composition for the surface layer are supplied to the same die to which the three extruders are connected.
  • a light emitting layer made of a thermoplastic resin composition for a light emitter layer is laminated and integrated on one surface of a light reflecting layer made of a thermoplastic resin composition for a light reflecting layer, and heat for the surface layer is formed on one surface of this light emitter layer.
  • the surface layer made of the plastic resin composition is laminated and integrated. And a method of manufacturing a light reflector and the like.
  • thermoplastic resin composition for a light reflection layer containing a thermoplastic resin and the above particles is supplied to a first extruder and melt-kneaded
  • thermoplastic resin composition for a phosphor layer containing a thermoplastic resin and a phosphor is supplied to a second extruder and melt-kneaded
  • thermoplastic resin and additives such as rutile type titanium oxide contained as necessary
  • thermoplastic resin composition containing the above is supplied to a third extruder and melt-kneaded, and a foaming agent is injected into the third extruder and melt-kneaded to obtain a foamable thermoplastic resin composition.
  • thermoplastic resin composition for the light emitter layer Extruded into a joining die to form a laminate in which the thermoplastic resin composition for the light emitter layer, the thermoplastic resin composition for the light reflecting layer, and the foamable thermoplastic resin composition are laminated in this order, and this laminate is joined Extrusion from a die attached to the tip of the die
  • a non-foamed sheet made of a thermoplastic resin composition for a light reflecting layer is laminated on one side of a foamed sheet obtained by foaming a foamable thermoplastic resin composition,
  • a light reflector formed by laminating and integrating light emitting layers made of the thermoplastic resin composition for layers can be produced.
  • a foaming agent may be press-fitted into the first extruder to make the thermoplastic resin composition for the light reflecting layer foamable.
  • the third extruder need not be connected to the joining die.
  • a fourth extruder is connected to a converging die, and the fourth extruder includes a thermoplastic resin and a light-reflective filler.
  • the resin composition may be supplied to coextrude the surface layer thermoplastic resin composition, and the surface layer thermoplastic resin composition may be laminated and integrated as a surface layer on the phosphor layer.
  • the die is not particularly limited as long as it is widely used in extrusion foaming, and examples thereof include a T die and an annular die.
  • the light reflector having the above-described configuration can be produced by extrusion foaming into a sheet form from an extruder.
  • a cylindrical body is produced by extrusion foaming from the annular die into a cylindrical shape, and the cylindrical body is gradually expanded in diameter and then supplied to a cooling mandrel for cooling.
  • the light reflector having the above-described configuration can be manufactured by cutting the cylindrical body continuously between the inner and outer peripheral surfaces in the direction of extrusion, and opening and developing the cylindrical body.
  • the blowing agent is not particularly limited, and is an organic gas such as saturated aliphatic hydrocarbons such as propane, butane and pentane, and halogenated hydrocarbons such as tetrafluoroethane, chlorodifluoroethane and difluoroethane; carbon dioxide and nitrogen gas.
  • organic gas such as saturated aliphatic hydrocarbons such as propane, butane and pentane, and halogenated hydrocarbons such as tetrafluoroethane, chlorodifluoroethane and difluoroethane; carbon dioxide and nitrogen gas.
  • Gaseous inorganic compounds such as water; liquid inorganic compounds such as water; mixtures of organic acids or salts thereof with bicarbonate, such as a mixture of sodium bicarbonate and citric acid, dinitrosopentamethylenetetramine, etc.
  • Solid foaming agents and the like are mentioned, and it is preferable to use a mixture of an organic acid or a salt thereof and bicarbonate and an organic gas, and a mixture of sodium bicarbonate and citric acid and an organic gas are used. It is more preferable to use together.
  • the light reflector thus obtained contains a light emitter that emits light in the visible light region in the light emitter layer 2 and emits ultraviolet light or visible light incident on the light emitter layer 2 of the light reflector. Absorbs and emits light having an emission spectrum peak in the visible light region, so the wavelength distribution of the light emitted from the light source is different from the wavelength distribution of the reflected light emitted from the light reflector. It can be suitably used for applications where hue is important, such as lighting.
  • the light reflector is either a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm in the light emitter layer 2 or a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm.
  • the light emitters absorb light incident on the light emitter layer 2 of the light reflector, and these light emitters have an emission spectrum peak in the wavelength region of 400 to 470 nm.
  • One or both of light and light having an emission spectrum peak in the wavelength region of 570 to 700 nm are emitted.
  • the incident light that has passed through the light emitter layer 2 without being absorbed by the light emitter is reflected by the light reflecting layer 1 toward the light emitter layer 2 and passes through the light emitter layer 2 again to the light emitter.
  • Light that has been absorbed and emits light having the above-described emission spectrum is emitted, and among the light emitted by the light emitter, the light emitted to the light reflecting layer 1 side is also reflected by the light reflecting layer 1 to the light emitting layer 2 side. To do. Therefore, the light having the above emission spectrum emitted from the light emitter of the light emitter layer 2 is efficiently emitted from the light emitter layer 2.
  • the light emitted from the light reflector A rather than the light incident on the light reflector A is 400 due to the light emitting action of the light emitter in the light emitter layer 2. Since the amount of light in the wavelength region of ⁇ 470 nm or in the wavelength region of 570 to 700 nm is large, it becomes easier for human eyes to recognize blue or red light, which is inferior in visual sensitivity compared to green light, and a display device It can be suitably used for applications in which hue is important, such as lighting and lighting.
  • the light reflector according to the present invention makes it easier for human eyes to recognize blue or red light, which has inferior visibility compared to green light. However, it can also be used for plant cultivation applications.
  • the light reflector A of the present invention when the light reflector A of the present invention is irradiated with artificial light such as a fluorescent lamp or sunlight, a conventional white or silver light reflector is produced by the action of the light emitter included in the light emitter layer 2.
  • the amount of light reflected by the light reflector A of the present invention is larger than that of the reflected light in one or both of the wavelength region of 400 to 470 nm and the wavelength region of 570 to 700 nm. Yes.
  • the light in the wavelength region of 400 to 470 nm and the light in the wavelength region of 570 to 700 nm are light effective for plant growth. Therefore, according to the light reflector of the present invention, sunlight, CCFL, fluorescence When cultivating plants using artificial light such as lamps, the plant can be irradiated with more light that is effective for the growth of plants, so that the growth of plants can be promoted, and It can be performed indoors as well as outdoors. Furthermore, when artificial light is used, the power consumption of the artificial light source can be reduced.
  • the surface layer 3 when the surface layer 3 is laminated and integrated on one surface of the light emitter layer 2, that is, the light incident surface side of the light reflector, the surface layer 3 contains a light reflective filler, and the light emitter The amount of light incident on the layer 2 is limited. Therefore, the light emitting action of the light emitter included in the light emitter layer 2 can be stably maintained over a long period of time, and the effect of changing the hue of the light reflected by the light reflector can be maintained over a long period of time. Can be sustained.
  • the light that is incident on the light emitter layer but is not absorbed by the light emitter but is reflected by the light reflecting layer and emitted from the light emitter layer is again emitted by the surface layer.
  • the light emitter in which the wavelength region of the reflected light reflected at the interface between the synthetic resin constituting the surface layer and the light reflective filler contained in the surface layer is contained in the light emitter layer.
  • the light emission wavelength region overlaps, light in the wavelength region emitted from the light emitter among the light incident on the light reflector is reflected outside the light reflector by the surface layer and emitted from the light emitter.
  • the reflected light can be uniformly emitted to the outside of the light reflector while being irregularly reflected by the light reflective filler, and the hue of the reflected light from the light reflector can be changed more reliably and uniformly.
  • the incident light that has passed through the light emitter layer 2 without being absorbed by the light emitter is reflected by the light reflecting layer 1 toward the light emitter layer 2 and passes through the light emitter layer 2 again to the light emitter.
  • the light emitter After being absorbed, the light emitter emits light to the visible light region, and among the light emitted from the light emitter, the light emitted to the light reflection layer 1 side is also reflected by the light reflection layer 1 to the light emitter layer 2 side.
  • the Therefore, the light emitted from the light emitter of the light emitter layer 2 is reflected from the light emitter layer 2 to the surface layer 3 side and is efficiently emitted to the outside through the surface layer 3.
  • the light emitting action of the light emitter in the light emitter layer 2 causes the light reflector A to emit light more than the amount of light incident on the light reflector A in the specific wavelength region in the visible light region. Since the amount of emitted light is larger, it can be suitably used for applications in which hue is important, such as a display device or illumination.
  • the lighting device L includes a light source B and a light reflector A disposed behind the light source B.
  • the light source B is not particularly limited as long as it can emit light in the ultraviolet region and / or the visible light region.
  • a cold cathode tube (CCFL) a fluorescent lamp, a light emitting diode (LED), a mercury lamp, an HID lamp
  • An incandescent bulb may be used, but a fluorescent lamp is preferred because of its excellent light diffusion performance and luminous efficiency and low calorific value.
  • the light source B may be used independently or 2 or more types may be used together.
  • Fluorescent lamps are generally classified into three-wavelength type and high color rendering type according to color rendering, white type, daylight type, day white type according to color, straight tube type, annular type, etc. depending on the shape.
  • any kind of fluorescent lamp can be used.
  • a light reflector A formed or deformed into a convex arc shape is disposed at a predetermined interval from the light source B.
  • the light reflector A absorbs part of the light emitted from the light source B, and emits light having a wavelength distribution different from the wavelength distribution of the light emitted from the light source B as reflected light.
  • the light emitter layer 2 contains either or both of a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm and a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm.
  • the light emitted from the light source B and incident on the light emitter layer 2 of the light reflector is absorbed by the light emitters, and these light emitters have light having an emission spectrum peak in the wavelength region of 400 to 470 nm or 570.
  • One or both of light having emission spectrum peaks in a wavelength region of ⁇ 700 nm are emitted.
  • the incident light that has passed through the light emitter layer 2 without being absorbed by the light emitter is reflected by the light reflecting layer 1 toward the light emitter layer 2 and passes through the light emitter layer 2 again to the light emitter.
  • Light that has been absorbed and emits light having the above-described emission spectrum is emitted, and among the light emitted by the light emitter, the light emitted to the light reflecting layer 1 side is also reflected by the light reflecting layer 1 to the light emitting layer 2 side. To do. Therefore, the light having the above emission spectrum emitted from the light emitter of the light emitter layer 2 is efficiently emitted from the light emitter layer 2.
  • the light emitted from the light reflector A is more emitted from the light reflector A than the light emitted from the light source B and incident on the light reflector A. Due to the light-emitting action, the amount of light in the wavelength region of 400 to 470 nm or the wavelength region of 570 to 700 nm is large, so that the human eye recognizes blue or red light that is less visible than green light. It becomes easy and can be suitably used for applications in which hue is important.
  • the above-described illumination device can be used for an illumination application for illuminating an article arranged on a merchandise display shelf arranged in a retail store or the like.
  • articles For example, foodstuffs, clothing, a noble metal product etc. are mentioned.
  • the illuminant included in the illuminant layer 2 is an illuminant having an emission spectrum peak in the wavelength region of 400 to 470 nm, blue light is emphasized as light emitted from the illumination device. Therefore, the articles placed on the merchandise display shelf can be visually recognized in a state close to a blue hue.
  • the light emitter included in the light emitter layer 2 is a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm, red light is emphasized as light emitted from the illumination device. Therefore, the articles placed on the merchandise display shelf can be visually recognized in a state close to a red hue.
  • the merchandise value can be visually recognized in a state close to a blue or red hue, and the merchandise value can be improved.
  • the light emitter layer 2 when a cold beverage is placed on a merchandise display shelf, the light emitter layer 2 contains an illuminant having an emission spectrum peak in the wavelength region of 400 to 470 nm, whereby the cold beverage is made blue. It can be visually recognized in a state close to the hue of the system, and the drink can be further promoted to promote sales of the drink.
  • the warm beverage is made red by adding a luminous body having an emission spectrum peak in the wavelength region of 570 to 700 nm to the luminous body layer 2. It can be visually recognized in a state close to the hue of the system, and a beverage can be given a warmer impression to promote sales of the beverage.
  • the light reflector A used in the illumination device L of the present invention makes it easier for human eyes to recognize blue or red light, which has poor visibility compared to green light. From this, it has been explained that it can be suitably used for applications in which hue is important, but it can also be suitably used for plant cultivation applications.
  • the light reflector A when the light reflector A is irradiated with light from the light source B of the lighting device L of the present invention, it is reflected by the conventional white or silver light reflector due to the action of the light emitter included in the light emitter layer 2.
  • the amount of light reflected by the light reflector A is greater in one or both of the wavelength region of 400 to 470 nm and the wavelength region of 570 to 700 nm than the reflected light.
  • the light in the wavelength region of 400 to 470 nm and the light in the wavelength region of 570 to 700 nm are light that is effective for the growth of plants. Therefore, according to the lighting device L of the present invention, a cold cathode tube (CCFL)
  • CCFL cold cathode tube
  • the plant can be irradiated with more light that is effective for the growth of the plants, so that the growth of the plants can be promoted. Further, when artificial light, particularly fluorescent lamps are used, the power consumption of the light source can be reduced.
  • the lighting device L of the present invention when used for plant cultivation, for example, as shown in FIG. 6, hydroponics with a predetermined interval in front of the light source B of the lighting device L
  • Plant cultivation shelves C such as shelves and soil cultivation shelves may be arranged so that the reflected light emitted from the light reflector A is irradiated to the plants grown on the plant cultivation shelf C.
  • a fluorescent lamp When a fluorescent lamp is used as the light source of the lighting device L, light is emitted from the fluorescent lamp radially in all directions, and the emitted light is reflected while being diffused by the light reflector A.
  • the light required for the plants grown on the plant cultivation shelf C disposed in front of the light source B is irradiated almost uniformly, and the plants in the plant cultivation shelf C can be stably and reliably grown. .
  • a gap is formed between the light reflector A and the plant cultivation shelf C, and the reflected light reflected by the light reflector A is other than the plant cultivation shelf C. Irradiation of the part may reduce the efficiency of plant cultivation.
  • the light reflector A formed in a convex arc shape in the plant cultivation lighting device L is used as the first light reflector A, and the first light reflector A
  • the second light reflector D is disposed between both ends, that is, the curved ends A1 and A1 of the light reflector A and the plant cultivation shelf C, and the reflected light emitted from the first light reflector A is reflected.
  • the light reflected by the second light reflector D is further diffused by the second light reflector D, the light necessary for the plants grown on the plant cultivation shelf C is more uniformly and reliably obtained. Can be irradiated.
  • the second light reflector D a light reflector having the same configuration as that of the first light reflector A may be used, or a light reflector having a configuration different from that of the first light reflector A may be used.
  • the second light reflector D is configured to emit light having a wavelength distribution different from the wavelength distribution of the light emitted from the light source B as reflected light. Preferably it is.
  • the light reflector of the present invention since the light reflector of the present invention has the above-described configuration, it emphasizes light in a wavelength region different from the light emitted from the light source, and has a hue that cannot be expressed by conventional white and silver reflectors. For example, it can be suitably used in applications in which hue is important, such as illumination of articles placed on merchandise display shelves.
  • the light emitter layer of the light reflector is either a light emitter having an emission spectrum peak in the wavelength region of 400 to 470 nm or a light emitter having an emission spectrum peak in the wavelength region of 570 to 700 nm, or both.
  • the reflected light is emphasized in the wavelength region of 400 to 470 nm (blue system) or in the wavelength region of 570 to 700 nm (red system), and is blue or red that is difficult to be recognized by human eyes Can be easily recognized.
  • the hue of the illumination, the display device, and the object illuminated by them can be changed to a hue that could not be expressed by the conventional white and silver reflectors, and the hue of the display device and the illumination application, etc. It can be suitably used in applications where importance is attached.
  • the light reflector has a reflected light amount that is higher than that of incident light in a wavelength region effective for plant growth, that is, in one or both of a wavelength region of 400 to 470 nm and a wavelength region of 570 to 700 nm. Is increasing. Therefore, according to the said light reflector, growth of a plant can be aimed at using sunlight or artificial light.
  • the illuminating device using the said light reflector does not need to increase the power consumption of a light source, it can aim at energy saving and suppresses the heat dissipated from a light source, and temperature control of the plant cultivation atmosphere Can be easily performed, and plant cultivation can be performed more reliably and efficiently.
  • the amount of light incident on the light emitter layer is limited so that the light emitter in the light emitter layer does not absorb light more than necessary.
  • the light emitting action of the light emitter is sustained over a long period of time so that the effect of changing the hue of the reflected light by the light reflector can be stably maintained over a long period of time.
  • FIG. 10 is a graph showing reflection spectra of light reflectors of Examples 16 to 18 and Comparative Example 3. It is the graph which showed the reflection spectrum of the light reflection board of Examples 21, 33, and 34.
  • FIG. It is the graph which showed the reflection spectrum of the light reflecting plate of Examples 29, 35, and 36.
  • Example 1 A thermoplastic resin composition for a phosphor layer containing 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd.) and 0.1 part by weight of a fluorescent dye (trade name “Hostalx KCB” manufactured by Clariant Co., Ltd.) as a light emitter.
  • polypropylene trade name “PL500A” manufactured by Sun Allomer Co., Ltd.
  • fluorescent dye trade name “Hostalx KCB” manufactured by Clariant Co., Ltd.
  • thermoplastic resin composition for a light reflection layer containing 100 parts by weight of polypropylene (Sun Aroma) Product name "PL500A") 24 parts by weight, polypropylene (Nippon Polypro) Product name “FB3312”) 76 parts by weight, masterbatch containing rutile titanium oxide in an ethylene-propylene block copolymer (trade name “PPM 1KB662 WHT FD”, manufactured by Toyo Ink Co., Ltd., ethylene-propylene block co-weight)
  • a thermoplastic resin composition for a light reflection layer containing 100 parts by weight of polypropylene (Sun Aroma) Product name "PL500A”) 24 parts by weight, polypropylene (Nippon Polypro) Product name “FB3312”) 76 parts by weight, masterbatch containing rutile titanium oxide in an ethylene-propylene block copolymer (trade name “PPM 1KB662 WHT FD”, manufactured by Toyo Ink Co., Ltd., ethylene-propylene block co-weight)
  • the light emitting layer thermoplastic resin composition, the light reflecting layer thermoplastic resin composition, and the foam layer thermoplastic resin composition are joined together.
  • a foamed resin layer having an annular cross section made of a thermoplastic resin composition for a foam layer, and laminated on the outer surface of the foamable resin layer and from a thermoplastic resin composition for a light reflecting layer
  • the laminate was supplied to an annular die connected to a merging die and extruded and foamed into a cylindrical shape from the annular die to obtain a cylindrical foam.
  • a plate-like light reflector having an overall density of 0.7 g / cm 3 was obtained by cutting open and expanding.
  • a non-foamed sheet 1a having a thickness of 0.15 mm made of a non-foamable resin layer is laminated and integrated on one surface of a foam sheet 1b having a thickness of 0.5 mm formed by foaming a foamable resin layer.
  • Example 2 A light reflector was obtained in the same manner as in Example 1 except that 1 part by weight of a fluorescent pigment (trade name “FX-301”, manufactured by Sinloihi) was used instead of the fluorescent dye.
  • a fluorescent pigment trade name “FX-301”, manufactured by Sinloihi
  • Example 3 A light reflector was obtained in the same manner as in Example 1 except that 1 part by weight of a fluorescent pigment (trade name “FX-303” manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-303” manufactured by Sinloihi
  • Example 4 A light reflector was obtained in the same manner as in Example 1 except that 65 parts by weight of a fluorescent pigment (trade name “FX-303” manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-303” manufactured by Sinloihi
  • Example 5 A light reflector was obtained in the same manner as in Example 1 except that 1 part by weight of a fluorescent pigment (trade name “FX-307”, manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-307”, manufactured by Sinloihi
  • Example 6 A light reflector was obtained in the same manner as in Example 1 except that 1 part by weight of a fluorescent pigment (trade name “FX-327”, manufactured by Sinlohi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-327”, manufactured by Sinlohi
  • Example 7 Instead of using a fluorescent dye alone as a luminescent material, 0.1 part by weight of a fluorescent dye (trade name “Hostalx KCB” manufactured by Clariant) and 1 part by weight of a fluorescent pigment (trade name “FX-307” manufactured by Sinloihi) A light reflector was obtained in the same manner as in Example 1 except that was used together.
  • a fluorescent dye trade name “Hostalx KCB” manufactured by Clariant
  • FX-307 manufactured by Sinloihi
  • Example 8 Instead of using a fluorescent dye alone as the illuminant, 0.1 part by weight of a fluorescent dye (trade name “Hostalx KCB” manufactured by Clariant) and 1 part by weight of a fluorescent pigment (trade name “FX-327” manufactured by Sinroich) A light reflector was obtained in the same manner as in Example 1 except that was used together.
  • a fluorescent dye trade name “Hostalx KCB” manufactured by Clariant
  • FX-327 manufactured by Sinroich
  • Example 9 A thermoplastic resin composition for a luminous body layer containing 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd.) and 0.1 part by weight of a fluorescent dye (trade name “Hostax KCB” manufactured by Clariant Co., Ltd.) as a light emitter.
  • polypropylene trade name “PL500A” manufactured by Sun Allomer Co., Ltd.
  • fluorescent dye trade name “Hostax KCB” manufactured by Clariant Co., Ltd.
  • the laminated sheet was supplied to a T die connected to a merging die, and a light reflector having an overall density of 1.3 g / cm 3 was coextruded from the T die.
  • the light reflector was taken up so that the thickness was 0.2 mm.
  • the light reflector is formed of a non-foaming resin layer and has a thickness of 0.15 mm.
  • the light reflecting layer 1 is laminated and integrated on the light reflecting layer 1 and is formed of a light emitting resin layer.
  • the phosphor layer 2 having a thickness of 0.05 mm.
  • Example 10 A light reflector was obtained in the same manner as in Example 9 except that 1 part by weight of a fluorescent pigment (trade name “FX-301”, manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-301”, manufactured by Sinloihi
  • Example 11 A light reflector was obtained in the same manner as in Example 9, except that 1 part by weight of a fluorescent pigment (trade name “FX-303”, manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-303”, manufactured by Sinloihi
  • Example 12 A light reflector was obtained in the same manner as in Example 9 except that 1 part by weight of a fluorescent pigment (trade name “FX-307” manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-307” manufactured by Sinloihi
  • Example 13 A light reflector was obtained in the same manner as in Example 9 except that 1 part by weight of a fluorescent pigment (trade name “FX-327”, manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material.
  • a fluorescent pigment trade name “FX-327”, manufactured by Sinloihi
  • Example 14 Instead of using a fluorescent dye alone as the illuminant, 0.1 part by weight of a fluorescent dye (trade name “Hostalx KCB” manufactured by Clariant) and 1 part by weight of a fluorescent pigment (trade name “FX-307” manufactured by Sinroich) A light reflector was obtained in the same manner as in Example 9 except that was used together.
  • a fluorescent dye trade name “Hostalx KCB” manufactured by Clariant
  • FX-307 manufactured by Sinroich
  • Example 15 Instead of using a fluorescent dye alone as the illuminant, 0.1 part by weight of a fluorescent dye (trade name “Hostalx KCB” manufactured by Clariant) and 1 part by weight of a fluorescent pigment (trade name “FX-327” manufactured by Sinroich) A light reflector was obtained in the same manner as in Example 9 except that was used together.
  • a fluorescent dye trade name “Hostalx KCB” manufactured by Clariant
  • FX-327 manufactured by Sinroich
  • Example 16 A plate-like light reflector was obtained in the same manner as in Example 1. The obtained plate-shaped light reflector was cut into a planar rectangular shape having a short side of 50 cm and a long side of 120 cm. On the other hand, an iron support member E formed in a convex arc shape over the entire length in the long side direction is prepared, and the light reflector is exposed on the inner surface of the support member E. A convex arc-shaped light reflector A was manufactured by laminating and integrating them while being deformed into a convex arc shape along the support member E (see FIG. 8).
  • the fluorescent lamp B is disposed in front of the light-emitting body layer 2 of the light reflector A, and the fluorescent lamp B is electrically connected to a socket portion (not shown) attached to the support member.
  • L was produced.
  • the hydroponic cultivation shelf was arrange
  • Example 17 An illuminator L was produced in the same manner as in Example 16 except that 1 part by weight of a fluorescent pigment (trade name “FX-307”, manufactured by Sinloihi) was used instead of the fluorescent dye as the luminescent material. And the hydroponic cultivation shelf was arrange
  • a fluorescent pigment trade name “FX-307”, manufactured by Sinloihi
  • Example 18 Instead of using a fluorescent dye alone as the illuminant, 0.1 part by weight of a fluorescent dye (trade name “Hostalx KCB” manufactured by Clariant) and 1 part by weight of a fluorescent pigment (trade name “FX-307” manufactured by Sinroich) A lighting device L was produced in the same manner as in Example 16 except that the above was used together. And the hydroponic cultivation shelf was arrange
  • a fluorescent dye trade name “Hostalx KCB” manufactured by Clariant
  • FX-307 manufactured by Sinroich
  • Example 3 A lighting device L was produced in the same manner as in Example 16 except that the light emitter was not used.
  • the light reflectance was measured in the following manner, and the results are shown in Table 1 and FIGS.
  • FIG. 9 shows only the results of Examples 1, 5, and 7 and Comparative Example 1.
  • FIG. 10 shows only the results of Examples 16, 17, 18 and Comparative Example 3.
  • the total light reflectance in the light reflection layer of the obtained light reflector and the average light transmittance in the wavelength region of 360 to 740 nm were measured in the following manner, and the results are shown in Table 1.
  • a spectrocolorimeter (trade name “CM-2600d” manufactured by Konica Minolta Co., Ltd.) is used to measure the light reflectance of the light reflector, and in accordance with JIS Z 8722, the room temperature of the measurement atmosphere is 20 ° C. Under the condition of relative humidity of 60%, the light reflectance of the light reflector was measured every 10 nm in the wavelength region of 360 to 740 nm.
  • the maximum light reflectance was determined in the wavelength region of 400 to 470 nm and the wavelength region of 570 to 700 nm, and the minimum light reflectance was determined in the wavelength region of 470 to 570 nm.
  • a difference ⁇ 1 between the maximum light reflectance in the wavelength region of 400 to 470 nm and the minimum light reflectance in the wavelength region of 470 to 570 nm is calculated, and the maximum light reflectance in the wavelength region of 570 to 700 nm is calculated from 470 to 570 nm.
  • the difference ⁇ 2 from the minimum light reflectance in the wavelength region was calculated.
  • Total light reflectance of light reflecting layer and average light transmittance in wavelength region of 360 to 740 nm A test sheet having the same configuration and the same thickness as the light reflecting layer of the light reflector was extruded.
  • a spectroscopic colorimeter (trade name “CM-2600d” manufactured by Konica Minolta Co., Ltd.) was used to measure the total light reflectance of the obtained test sheet, and the measurement atmosphere temperature was 20 ° C. and relative humidity was 60 according to JIS Z8722. %,
  • the light reflectance of the test sheet was measured every 10 nm in the wavelength region of 360 to 740 nm. In the obtained light reflectivity, an arithmetic average value of the light reflectivities in the wavelength region of 360 to 740 nm was obtained and used as the total light reflectivity of the light reflection layer.
  • a spectrophotometer (trade name “UV-2450” manufactured by Shimadzu Corporation) was used to measure the light transmittance of the obtained test sheet, and the measurement atmosphere temperature was 20 ° C. and relative humidity was 60 according to JIS Z8722. %, The light transmittance of the test sheet was measured every 1 nm in the wavelength region of 360 to 740 nm. In the obtained light transmittance, the arithmetic average value of the light transmittance in the wavelength region of 360 to 740 nm was obtained and used as the average light transmittance of the light reflecting layer.
  • Examples 19 to 36 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd., refractive index: 1.48), a predetermined amount of fluorescent dye (trade name “OB” manufactured by Ciba Specialty Chemicals Co., Ltd.) shown in Table 2 as a light emitter, or fluorescent pigment (Product name “FX-327” manufactured by Sinloihi) and a thermoplastic resin composition for a phosphor layer containing a predetermined amount of rutile-type titanium oxide (refractive index: 2.71) shown in Table 2
  • a master batch (trade name “PPM 1KB662 manufactured by Toyo Ink Co., Ltd.”) containing 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd.) and an ethylene-propylene block copolymer containing rutile titanium oxide in an extruder.
  • a thermoplastic resin composition for a foam layer containing 1.4 parts by weight of a mixture of sodium bicarbonate and citric acid as a foaming agent is supplied to a third extruder and melt-kneaded.
  • thermoplastic resin composition for the light emitter layer From the three extruders, the thermoplastic resin composition for the light emitter layer, the thermoplastic resin composition for the light reflecting layer, and the thermoplastic resin composition for the foam layer are joined together.
  • a foamed resin layer having an annular cross section made of a thermoplastic resin composition for a foam layer, and an annular cross section made of a thermoplastic resin composition for a light reflecting layer laminated on the outer surface of the foamable resin layer.
  • a laminate comprising a non-foamable resin layer and a light-emitting resin layer having an annular cross-section made of a thermoplastic resin composition for a phosphor layer and laminated on the outer surface of the non-foamable resin layer is formed.
  • the product was supplied to an annular die connected to a confluence die and extruded and foamed into a cylindrical shape from the annular die to obtain a cylindrical foam.
  • a light reflector having an overall density of 0.7 g / cm 3 was obtained by cutting open and expanding.
  • a non-foamed sheet 1a having a thickness of 0.15 mm made of a non-foamable resin layer is laminated and integrated on one surface of a foam sheet 1b having a thickness of 0.5 mm formed by foaming a foamable resin layer.
  • Fluorescent dye (trade name “OB” manufactured by Ciba Specialty Chemicals Co., Ltd.) absorbed light in the ultraviolet region and had an emission wavelength region of 400 to 500 nm.
  • the fluorescent pigment (trade name “FX-327” manufactured by Sinloihi) absorbed light in the visible light region and had an emission wavelength region of 570 to 710 nm.
  • the reflection wavelength region of the reflected light reflected at the interface between polypropylene and rutile titanium oxide was 380 to 780 nm.
  • Examples 37 to 54 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd., refractive index: 1.48), a predetermined amount of fluorescent dye (trade name “OB” manufactured by Ciba Specialty Chemicals Co., Ltd.) shown in Table 2 as a light emitter, or fluorescent pigment (Product name “FX-327” manufactured by Sinloihi) and a thermoplastic resin composition for a phosphor layer containing a predetermined amount of rutile-type titanium oxide (refractive index: 2.71) shown in Table 2
  • a master batch (trade name “PPM 1KB662 manufactured by Toyo Ink Co., Ltd.”) containing 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd.) and an ethylene-propylene block copolymer containing rutile titanium oxide in an extruder.
  • thermoplastic resin composition for the light reflection layer is supplied to the second extruder and melt-kneaded, and the thermoplastic resin composition for the light emitter layer and the thermoplastic resin composition for the light reflection layer are merged from the first and second extruders.
  • the sheet was supplied to a T die connected to a joining die, and a light reflector having an overall density of 1.3 g / cm 3 was coextruded from the T die. The light reflector was taken up so that the thickness was 0.2 mm.
  • the light reflector is formed of a non-foaming resin layer and has a thickness of 0.15 mm.
  • the light reflecting layer 1 is laminated and integrated on the light reflecting layer 1 and is formed of a light emitting resin layer.
  • the phosphor layer 2 having a thickness of 0.05 mm.
  • the light reflectance and the maximum light reflectance were measured in the following manner, and the results are shown in Table 2 and FIGS. Further, the total light reflectance in the light reflecting layer of the obtained light reflector and the average light transmittance in the wavelength region of 360 to 740 nm were measured in the same manner as described above, and the results are shown in Table 2.
  • FIG. 11 shows the reflection spectra of Examples 21, 33, and 34.
  • FIG. 12 shows the reflection spectra of Examples 29, 35, and 36.
  • FIG. 13 shows the results of plotting the maximum light reflectance of Examples 19 to 25, 33 and 34 against the amount of rutile titanium oxide added.
  • FIG. 14 shows the results of plotting the maximum light reflectance of Examples 26 to 32, 35 and 36 against the amount of rutile titanium oxide added.
  • FIG. 15 shows the results of plotting the maximum light reflectance of Examples 37 to 43, 51 and 52 against the amount of added rutile titanium oxide.
  • FIG. 16 shows the results of plotting the maximum light reflectance of Examples 44 to 50, 53 and 54 against the addition amount of rutile-type titanium oxide.
  • a spectrocolorimeter (trade name “CM-2600d” manufactured by Konica Minolta Co., Ltd.) is used to measure the light reflectance of the light reflector, and in accordance with JIS Z 8722, the room temperature of the measurement atmosphere is 20 ° C. Under the condition of relative humidity of 60%, the light reflectance of the light reflector was measured every 10 nm in the wavelength region of 360 to 740 nm.
  • the maximum light reflectance was determined in the wavelength region of 360 to 740 nm.
  • the thermoplastic resin composition for light reflecting layer containing 0.2 parts by weight is supplied to the first extruder and melt-kneaded to obtain polypropylene (trade name “PL500A”, manufactured by Sun Allomer Co., Ltd.).
  • thermoplastic resin composition for a phosphor layer containing 1 part by weight is supplied to a second extruder and melt-kneaded, and 100 parts by weight of polypropylene (trade name “PL500A”, refractive index: 1.48) manufactured by Sun Allomer Co., Ltd.
  • a light-reflective filler 1 part by weight of rutile type titanium oxide (refractive index: 2.71), 0.1 part by weight of an ultraviolet absorber (trade name “Tinuvin 234” manufactured by Ciba Specialty Chemicals) and a light stabilizer (Ciba Specialty Chemicals) Product name “CHIMASSORB 119” manufactured by the company)
  • Thermoplastic resin composition for surface layer containing 0.1 part by weight Is supplied to the third extruder and melt-kneaded, and the thermoplastic resin composition for the light reflecting layer, the thermoplastic resin composition for the light emitting layer, and the surface layer are joined to the confluence die connecting the first to third extruders.
  • thermoplastic resin composition is supplied and coextruded from the T-die connected to the converging die, so that the light reflecting layer 1 made of the thermoplastic resin composition for the light reflecting layer is formed on one surface of the light reflecting layer 1.
  • a light emitting layer 2 which is laminated and integrated and is made of a thermoplastic resin composition for a light emitting layer, and a surface layer 3 which is laminated and integrated on one surface of the light emitting layer 2 and is made of a thermoplastic resin composition for a surface layer.
  • a light reflector was produced.
  • the light reflector has a total thickness of 0.25 mm, a density of 1.3 g / cm 3 , a light reflection layer 1 thickness of 0.15 mm, a light emitter layer 2 thickness of 0.05 mm, and a surface.
  • the thickness of layer 3 was 0.05 mm.
  • Fluorescent pigment (trade name “FX-303” manufactured by Sinloihi) absorbed light in the visible light region and had an emission wavelength region of 570 to 710 nm.
  • the reflection wavelength region of the reflected light reflected at the interface between polypropylene and rutile titanium oxide was 380 to 780 nm.
  • Example 56 A light reflector was produced in the same manner as in Example 55 except that the amount of rutile titanium oxide in the thermoplastic resin composition for the surface layer was 8 parts by weight instead of 1 part by weight.
  • Example 57 A light reflector was produced in the same manner as in Example 55 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was 16 parts by weight instead of 1 part by weight.
  • Tinuvin 234 0.1 parts by weight, light stabilizer (trade name“ CHIMASORB 119 ”manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.1 parts by weight, and 1.4 parts by weight of a mixture of sodium bicarbonate and citric acid as a blowing agent
  • Expandable thermoplastic resin composition into the first extruder 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd.), 1 part by weight of a phosphor (trade name “FX-303” manufactured by Sinloihi Co., Ltd.), an ultraviolet absorber (Ciba Specialty Chemicals Co., Ltd.)
  • Product name “Tinuvin 234”) 0.1 parts by weight and light stabilizer (product name “CHIMASORB 119”, manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.1 parts by weight
  • To 100 parts by weight of polypropylene (trade name “PL500A” manufactured by Sun Allomer Co
  • thermoplastic resin composition for the surface layer containing 0.1 part by weight is supplied to a third extruder, melted and kneaded, and extruded to a converging die connected to the first to third extruders.
  • thermoplastic resin composition for the surface layer, the thermoplastic resin composition for the light emitter layer, and the foamable thermoplastic resin composition are laminated in this order from the outside to the inside, and this cylinder
  • the cylindrical laminate is produced by extrusion foaming from an annular die attached to the tip of the converging die, and the cylindrical body is gradually expanded and then supplied to the cooling mandrel for cooling.
  • the light-reflecting layer 1 made of a foamed sheet obtained by foaming a foamable thermoplastic resin composition by continuously cutting in the extruding direction between the inner and outer peripheral surfaces, and opening and developing the foamed thermoplastic resin composition.
  • a light reflector was manufactured.
  • the light reflector has a total thickness of 0.6 mm, a density of 0.6 g / cm 3 , a light reflection layer 1 thickness of 0.5 mm, a light emitter layer 2 thickness of 0.05 mm, and a surface.
  • the thickness of layer 3 was 0.05 mm.
  • Example 59 A light reflector was produced in the same manner as in Example 58 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was 8 parts by weight instead of 1 part by weight.
  • Example 60 A light reflector was produced in the same manner as in Example 58 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was changed to 16 parts by weight instead of 1 part by weight.
  • thermoplastic resin composition for the surface layer is supplied to a third extruder, melted and kneaded, and 50 parts by weight of pyrene (trade name “PL500A” manufactured by Sun Allomer Co., Ltd.), 50 parts by weight of polypropylene (trade name “FB3312” manufactured by Nippon Polypro Co., Ltd.), 0.1 weight of ultraviolet absorber (trade name “Tinvin 234” manufactured by Ciba Specialty Chemicals) Part, 0.1 parts by weight of light stabilizer (trade name “CHIMASSORB 119” manufactured by Ciba Specialty Chemicals) and 1 part by weight of a mixture of sodium bicarbonate and citric acid as a foaming agent Supply to a four extruder, melt
  • the cylindrical body is continuously cut in the extruding direction between the inner and outer peripheral surfaces, cut open, and developed, so that the light reflecting layer 1 made of the thermoplastic resin composition for the light reflecting layer and the light reflecting layer 1
  • a foam layer 4 laminated and integrated on the other surface of the light reflection layer and foamed with a foamable thermoplastic resin composition.
  • the light reflector has an overall thickness of 0.65 mm, a density of 0.7 g / cm 3 , a light reflection layer 1 thickness of 0.15 mm, a light emitter layer 2 thickness of 0.05 mm, and a surface.
  • the thickness of the layer 3 was 0.05 mm, and the thickness of the foam layer was 0.4 mm.
  • Example 62 A light reflector was produced in the same manner as in Example 61 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was 8 parts by weight instead of 1 part by weight.
  • Example 63 A light reflector was produced in the same manner as in Example 61 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was 16 parts by weight instead of 1 part by weight.
  • the thermoplastic resin composition for the surface layer is supplied to a third extruder
  • Tinuvin 234 0.1 parts by weight, light stabilizer (trade name“ CHIMASORB 119 ”manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.1 parts by weight, and 1.4 parts by weight of a mixture of sodium bicarbonate and citric acid as a blowing agent Supplying the foamable thermoplastic resin composition to the fourth extruder Melting and kneading and extruding to a converging die connected with first to fourth extruders, surface layer thermoplastic resin composition, phosphor layer thermoplastic resin composition, light reflecting layer thermoplastic resin composition and A cylindrical laminate is formed by laminating a foamable thermoplastic resin composition in this order from the outside to the inside, and the cylindrical laminate is extruded and foamed from an annular die attached to the tip of a converging die.
  • a foam sheet 1b formed by foaming a foamable thermoplastic resin composition, and a non-foamed sheet 1a made of a thermoplastic resin composition for a light reflecting layer laminated and integrated on one surface of the foam sheet 1b.
  • Reflective layer 1 and this light A light-emitting layer 2 made of a thermoplastic resin composition for a light-emitting body layer, which is laminated and integrated on one surface of the layer 1, and a thermoplastic resin composition for a surface layer, laminated and integrated on one surface of the light-emitting body layer 2.
  • a light reflector made of the surface layer 3 was produced.
  • the light reflector has a total thickness of 0.75 mm, a density of 0.7 g / cm 3 , a non-foamed sheet 1a constituting the light reflecting layer 1 has a thickness of 0.15 mm, and a foamed sheet
  • the thickness of 1b was 0.5 mm
  • the thickness of the light emitter layer 2 was 0.05 mm
  • the thickness of the surface layer 3 was 0.05 mm.
  • Example 65 A light reflector was produced in the same manner as in Example 64 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was 8 parts by weight instead of 1 part by weight.
  • Example 66 A light reflector was produced in the same manner as in Example 64 except that the amount of rutile-type titanium oxide in the thermoplastic resin composition for the surface layer was 16 parts by weight instead of 1 part by weight.
  • Example 67 A light reflector was obtained in the same manner as in Example 55 except that the third extruder was not connected to the joining die and the surface layer was not formed.
  • Example 68 A light reflector was produced in the same manner as in Example 55 except that the thermoplastic resin composition for the surface layer did not contain rutile titanium oxide.
  • Example 69 A light reflector was produced in the same manner as in Example 58 except that the third extruder was not connected to the converging die and the surface layer was not formed.
  • Example 70 A light reflector was produced in the same manner as in Example 58 except that the thermoplastic resin composition for the surface layer did not contain rutile titanium oxide.
  • Example 71 A light reflector was produced in the same manner as in Example 61 except that the third extruder was not connected to the converging die and the surface layer was not formed.
  • Example 72 A light reflector was produced in the same manner as in Example 61 except that the surface layer thermoplastic resin composition did not contain rutile titanium oxide.
  • Example 73 A light reflector was obtained in the same manner as in Example 64 except that the third extruder was not connected to the converging die and the surface layer was not formed.
  • Example 74 A light reflector was produced in the same manner as in Example 64, except that the surface layer thermoplastic resin composition did not contain rutile titanium oxide.
  • the light reflectance, the maximum light reflectance, and the average light transmittance in the wavelength region of 360 to 740 nm in the surface layer were measured in the following manner, and the results are shown in Tables 3, 4 and It is shown in FIGS. Tables 3 and 4 list the total content of titanium oxide contained in the light reflecting layer.
  • the total light reflectance of the light reflecting layer and the average light transmittance in the wavelength region of 360 to 740 nm were measured in the same manner as described above, and the results are shown in Tables 3 and 4.
  • FIG. 17 shows the reflection spectra before and after the accelerated exposure test of Example 55.
  • FIG. 18 shows the reflection spectra before and after the accelerated exposure test of Example 56.
  • FIG. 19 shows the reflection spectra before and after the accelerated exposure test of Example 57.
  • FIG. 20 shows the reflection spectra before and after the accelerated exposure test of Example 67.
  • FIG. 21 shows the reflection spectra before and after the accelerated exposure test of Example 68.
  • a test sheet having the same configuration and the same thickness as the surface layer of the light reflector was extruded.
  • a spectrophotometer (trade name “UV-2450” manufactured by Shimadzu Corporation) was used, and the temperature of the measurement atmosphere was 20 ° C. and the relative humidity was 60% in accordance with JIS Z8722.
  • the light transmittance of the test sheet was measured every 1 nm in the wavelength region of 360 to 740 nm.
  • the arithmetic average value of the light transmittance in the wavelength region of 360 to 740 nm was determined and used as the average light transmittance of the surface layer.
  • a spectrocolorimeter (trade name “CM-2600d” manufactured by Konica Minolta Co., Ltd.) is used to measure the light reflectance of the light reflector, and in accordance with JIS Z8722, the room temperature of the measurement atmosphere is 20 ° C.
  • the light reflectance of the light reflector was measured every 10 nm in the wavelength region of 360 to 740 nm under the condition where the humidity was 60%.
  • the maximum light reflectivity was determined in the wavelength region of 360 to 740 nm, and the results are shown in the columns of “Before accelerated exposure test” in Tables 3 and 4.
  • the test tank has a set temperature of 50 ° C. according to JIS K7350-4.
  • the accelerated exposure test was performed by adjusting the surface relative humidity of 20% and irradiating the surface layer of the light reflector with carbon arc lamp light for 100 hours.
  • the light reflector of Example 67, 69, 71, 73 the light-emitting body layer was irradiated with light.
  • the maximum light reflectance in the wavelength region of 360 to 740 nm was determined in the same manner as described above, and the results were listed in the columns of “After accelerated exposure test” in Tables 3 and 4. .
  • the present invention emphasizes light in a wavelength region different from the light emitted from the light source, and is suitable for applications in which hue is important, for example, illumination use of articles placed on a product display shelf, use of a display device, etc. Can be used.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

La présente invention se rapporte à un réflecteur de lumière qui réfléchit la lumière provenant d'une source de lumière, telle la lumière du soleil ou une lumière artificielle émise à partir d'une lampe fluorescente et qui peut émettre une lumière réfléchie ayant une distribution de longueur d'onde différente d'une distribution de longueur d'onde de la lumière émise à partir de la source de lumière. Un réflecteur de lumière est caractérisé par l'émission d'une lumière réfléchie ayant une distribution de longueur d'onde différente de la distribution de longueur d'onde de la lumière émise à partir de la source de lumière et peut avoir une teinte qu'il était impossible d'obtenir à partir d'une plaque de réflexion blanche ou en argent classique en accentuant la lumière ayant une distribution de longueur d'onde différente de la distribution de longueur d'onde de la lumière émise à partir de la source de lumière, peut réaliser un effet d'impact dramatique par l'éclairage et peut être utilisé de façon avantageuse dans des applications dans lesquelles, par exemple, on considère que la teinte de la lumière d'éclairage, etc., utilisée pour des marchandises disposées dans une vitrine est importante.
PCT/JP2010/055274 2009-03-30 2010-03-25 Réflecteur de lumière, dispositif d'éclairage et dispositif d'éclairage permettant de cultiver des plantes WO2010113771A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09164622A (ja) * 1995-12-18 1997-06-24 Oike Ind Co Ltd 蓄光性拡散反射フイルム
JP2002243938A (ja) * 2001-02-13 2002-08-28 Nitto Denko Corp 光学素子、偏光面光源及び液晶表示装置
JP2003021708A (ja) * 2001-07-05 2003-01-24 Fujitsu Ltd 反射基板及びその形成方法ならびにそれを用いた反射型表示素子
JP2003084139A (ja) * 2001-09-13 2003-03-19 Toppan Printing Co Ltd ホログラム反射板およびそれを搭載した反射型液晶表示装置
JP2008019296A (ja) * 2006-07-11 2008-01-31 Mitsubishi Chemicals Corp 光反射性樹脂組成物およびこれを成形してなる光反射性部材

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6809781B2 (en) * 2002-09-24 2004-10-26 General Electric Company Phosphor blends and backlight sources for liquid crystal displays
CN100339934C (zh) * 2003-08-27 2007-09-26 筑光光电股份有限公司 一种高亮度平面灯及其制造方法
CN100543500C (zh) * 2005-04-19 2009-09-23 积水化成品工业株式会社 反射板用发泡片材、反射板及反射板用发泡片材的制造方法
JP2007178998A (ja) * 2005-12-01 2007-07-12 Sekisui Film Kk 反射フィルム、反射積層フィルム及び反射積層板
CN101320669A (zh) * 2008-07-04 2008-12-10 黄明荣 带镜面反射涂层的荧光灯管

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09164622A (ja) * 1995-12-18 1997-06-24 Oike Ind Co Ltd 蓄光性拡散反射フイルム
JP2002243938A (ja) * 2001-02-13 2002-08-28 Nitto Denko Corp 光学素子、偏光面光源及び液晶表示装置
JP2003021708A (ja) * 2001-07-05 2003-01-24 Fujitsu Ltd 反射基板及びその形成方法ならびにそれを用いた反射型表示素子
JP2003084139A (ja) * 2001-09-13 2003-03-19 Toppan Printing Co Ltd ホログラム反射板およびそれを搭載した反射型液晶表示装置
JP2008019296A (ja) * 2006-07-11 2008-01-31 Mitsubishi Chemicals Corp 光反射性樹脂組成物およびこれを成形してなる光反射性部材

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