WO2015129116A1 - 照明装置 - Google Patents

照明装置 Download PDF

Info

Publication number
WO2015129116A1
WO2015129116A1 PCT/JP2014/081576 JP2014081576W WO2015129116A1 WO 2015129116 A1 WO2015129116 A1 WO 2015129116A1 JP 2014081576 W JP2014081576 W JP 2014081576W WO 2015129116 A1 WO2015129116 A1 WO 2015129116A1
Authority
WO
WIPO (PCT)
Prior art keywords
phosphor
light
illumination
resin layer
containing resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/081576
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
和浩 綿谷
津森　俊宏
敏彦 塚谷
美濃輪　武久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Priority to EP14883876.6A priority Critical patent/EP3115677B1/en
Priority to CN201480076403.2A priority patent/CN106030188B/zh
Priority to US15/122,043 priority patent/US9988572B2/en
Priority to KR1020167025703A priority patent/KR102088211B1/ko
Publication of WO2015129116A1 publication Critical patent/WO2015129116A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7774—Aluminates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/61—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
    • C09K11/615—Halogenides
    • C09K11/616—Halogenides with alkali or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/61—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
    • C09K11/617—Silicates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/7721—Aluminates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • F21V1/16—Covers for frames; Frameless shades characterised by the material
    • F21V1/17—Covers for frames; Frameless shades characterised by the material the material comprising photoluminescent substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/08—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/38—Combination of two or more photoluminescent elements of different materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention is suitable for outdoor lighting that is suitably used in places with poor brightness (places where there is no light around) at night, etc., and particularly suitable for outdoor lighting installed in sidewalks, roadways, plazas, residential areas, tunnels, etc.
  • the present invention relates to a lighting device.
  • LED lighting that is more advantageous in terms of power consumption and lifetime than conventional incandescent bulbs and fluorescent lamps from the viewpoint of maintenance and economy for outdoor lighting such as street lamps.
  • LED lighting has a wide variety of light emission, and those using blue LEDs have a blue component in the light component to be irradiated, so outdoor lighting such as blue street lamps that have been introduced in recent years It can be used as a light source.
  • the power usage efficiency of LED lighting is extremely high, and the power for obtaining the same illuminance is extremely small, 1/5 or less that of conventional incandescent bulbs.
  • the product life is generally said to be tens of thousands of hours, leading to maintenance labor and cost reduction. Therefore, LED lighting is excellent as outdoor lighting such as street lamps that are used continuously for a long time.
  • the peak wavelength of light emitted from the phosphor is around 555 nm by applying a phosphor emitting green, yellow, red or the like on the front surface of a blue LED chip having an emission wavelength of 440 to 470 nm.
  • the broad fluorescent light and the unconverted blue light are combined to produce white light.
  • Many white LEDs for illumination use fluorescent light with a wavelength of around 555 nm because the human eye has high sensitivity to light in the vicinity of a wavelength of 555 nm, so in principle there are many components of light of this wavelength. This is because the contained light is highly efficient as illumination.
  • the peak wavelength of human visibility shifts from 555 nm to a shorter wavelength side as shown in FIG. Is known (Purkinje effect).
  • Non-Patent Document 1 For night lighting, lighting with a high color temperature has been studied (Non-Patent Document 1). However, conventional night lighting has a low level of scotopic vision and low light with respect to changes in visibility based on the Purkinje effect. It is hard to say that it contains enough wavelengths with the highest visibility at the visual level.
  • cone cells and rod cells On the retina of the human eyeball, there are cone cells and rod cells that are light receptors.
  • the cone cells have a function of feeling color vision in a bright place, and rod cells feel light in a dark place. It is known that These pyramidal cells and rod cells are not evenly distributed on the human retina, and the cone cells are concentrated near the part called the fovea, whereas the rod cells are closer to the periphery. It is also known that many are distributed. For this reason, it is considered that the human eye has a structure that makes it easier to perceive brightness in the peripheral visual field than in the center of the viewpoint in an environment where rods mainly work, such as under dark vision or undercognitive vision. In such an environment, it is considered that the lighting device should also increase the amount of light around the optical axis.
  • LED night illumination there is a portion around the optical axis of the lighting device. Most of them are particularly bright and the surroundings of the optical axis are darkened rapidly.
  • many LED lights used as street lighting have a high color temperature, but such street lighting is simply an increase in blue light. It is not designed in consideration of visual sensitivity.
  • the present invention has been made in view of the above circumstances, and feels brighter to the human eye, particularly in the suburbs, rural areas, rural areas, tunnels, etc.
  • An object of the present invention is to provide an illuminating device that can provide a sense of brightness.
  • the inventors of the present invention have studied LED illumination that can improve the reduction in visibility due to changes in the visibility wavelength under dark vision or twilight vision, and as a phosphor that is excited by a blue LED together with a blue LED as a light source.
  • Lu 3 Al 5 O 12 Ce 3+ phosphor (LuAG phosphor) Study to improve feeling and visibility.
  • the LuAG phosphor concentration in the crystal of Ce which is added as an activator i.e., by controlling the Ce-activated rate for Lu, 5d ⁇ 2 F 7/2 5d to the transition ⁇ 2 F 5/2
  • the rate of transition can be increased, and light emission near 510 nm, which is advantageous under dark or dimmed vision, increases.
  • the LuAG phosphor and the blue LED it is possible to obtain illumination that is more useful in a dark place or under a bright view than in the past.
  • the color emitted by the illumination is blue or green, When its chromaticity is measured, it is far from blackbody radiation. Under dark vision or twilight vision, the human eye is less sensitive to color, but a light source whose chromaticity of emitted light is out of blackbody radiation may cause discomfort to the human.
  • the deviation from blackbody radiation is expressed by ⁇ uv.
  • ⁇ uv in order to reduce ⁇ uv, it is effective to bring the emission color closer to blackbody radiation by adding red light.
  • red light in order to add red light in night illumination using a blue LED as a light source, it can be achieved by separately incorporating a red LED or the like into the illumination device, but there is a drawback that the circuit as the illumination device becomes complicated.
  • it is also effective to use a phosphor that is excited by a blue LED and emits red light at the same time. Examples of the phosphor that emits red light when excited by blue light include nitrides such as SCASN, CASN, and ⁇ -sialon.
  • Phosphors and oxynitride phosphors are listed, but these phosphors have the feature of absorbing blue-green, green, and yellow light in addition to blue light. These phosphors are used simultaneously with LuAG phosphors. If red light is emitted, the light emission intensity of 507 nm to 555 nm, which is useful in a dark place or under twilight, is greatly reduced.
  • the inventors of the present invention in a lighting device that combines a blue LED and a LuAG phosphor having a cerium activation amount of 2% or less, further activates manganese.
  • the emission color is near blackbody radiation with a small ⁇ uv, and it is under sight and light It becomes an illuminating device in which the brightness in the peripheral visual field can be felt more visually, and these phosphors are mixed and dispersed in a resin to form a phosphor-containing resin layer, and the phosphor-containing resin layer emits light from a blue LED. It has been found that the illumination range of the illumination device is greatly expanded by arranging it in the front of the direction, and the illumination device irradiates illumination light over a wider range under dark place vision or twilight vision than before. Invented the invention It led to.
  • the present invention provides the following lighting device.
  • An illuminating device comprising: a double fluoride phosphor represented by the formula: [2] The lighting device according to [1],
  • the resin is one or two or more thermoplastic resins selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polycarbonate, polystyrene, acrylic resin, and ABS resin.
  • an illuminating device that emits light in the vicinity of blackbody radiation and feels brighter under dark and dimmed conditions, providing high visibility and a wide range of brightness. can do.
  • FIG. 3 is a diagram showing an XRD profile of Lu 3 Al 5 O 12 : Ce 3+ phosphor particles obtained in Example 1. It is a figure which shows the LED illumination produced by the Example and the comparative example, (A) is a partial see-through
  • the illumination device of the present invention includes a blue LED chip having a maximum peak at a wavelength of 420 to 480 nm.
  • a blue LED chip As such a blue LED chip, a known blue LED package in which a blue LED chip is sealed together with wiring or the like with a sealing material may be used, and a known one or a commercially available product can be used.
  • a blue LED chip whose maximum peak is shorter or longer than the above wavelength is used, the excitation efficiency of the phosphor is extremely lowered, which is not preferable.
  • the illuminating device of this invention is equipped with the fluorescent substance containing resin layer, and the fluorescent substance containing resin layer is arrange
  • this phosphor-containing resin layer the following composition formula (1) Lu 3 Al 5 O 12 : Ce 3+ (1)
  • the content of the LuAG phosphor represented by the composition formula (1) depends on the distance, positional relationship, strength, and the like with respect to the phosphor-containing resin layer to be arranged. It is preferable that they are 5 mass% or more and 50 mass% or less.
  • Ce-activated rate for Lu exceeds 2 mol%, 5d ⁇ 2 F 7/2 ratio of transition 5d ⁇ 2 F 5/2 more than the transition, if the Ce-activated rate for Lu exceeds 2 mol% , 5d ⁇ 2 F 7/2 ratio of transition 5d ⁇ 2 F 5/2 significantly greater than the transition. Therefore, the peak position of the emission spectrum shifts to the long wavelength side, and the deviation between the emission wavelength and the visibility in the dark place or under the bright vision becomes large, and under the dark place or under the bright view. There is a risk of inferior brightness.
  • the LuAG phosphor of the present invention can be produced by a known method. For example, barium fluoride is added as a flux to each powder of lutetium oxide, cerium oxide, and aluminum oxide mixed to have a desired composition, and this mixed powder is then added to the atmosphere under an inert gas atmosphere such as nitrogen. In a reducing atmosphere in which a part of the active gas is replaced with a reducing component such as hydrogen, it is heated at a high temperature to form a composite oxide. It can be manufactured by crushing.
  • the phosphor-containing resin layer of the present invention further comprises the following composition formula (2): A 2 (B 1-x Mn x ) F 6 (2) (Wherein A is one or more elements selected from the group consisting of Li, Na, K and Cs, B is one or more elements selected from the group consisting of Si, Ti, Nb, Ge and Sn, and x is (It is a positive number that satisfies the range of 0.001 ⁇ x ⁇ 0.1.) A compound obtained by mixing and dispersing a double fluoride phosphor represented by the following formula is used.
  • the content rate of the fluorescent substance represented by the composition formula (2) depends on the distance, positional relationship, strength, and the like with respect to the fluorescent substance-containing resin layer, 1% by mass in the fluorescent substance-containing resin layer. It is preferable that it is 40 mass% or less.
  • the double fluoride phosphor of the present invention can be produced by a known method (for example, US Pat. No. 3,576,756 (Patent Document 5) and the like).
  • the LuAG phosphor and the double fluoride phosphor of the present invention are both in particulate form.
  • the average particle diameter of the phosphor particles is preferably 1.5 to 50 ⁇ m from the viewpoint of light emission efficiency. When the average particle size is less than 1.5 ⁇ m, the luminous efficiency of the phosphor particles is lowered, and the illumination efficiency may be lowered. On the other hand, when the average particle diameter exceeds 50 ⁇ m, there is no particular problem as illumination characteristics, but a large amount of phosphor is used to increase the number of particles, and the amount of phosphor used increases, resulting in high cost. There is a risk.
  • the particle size of the phosphor particles in the present invention for example, a value measured by a laser diffraction scattering method in which phosphor particles are dispersed in an air stream or a water stream can be applied.
  • the phosphor-containing resin layer of the present invention is represented by the LuAG phosphor represented by the above composition formula (1) of the present invention and the above composition formula (2) for the purpose of improving the color tone and color rendering as an illumination device.
  • You may use fluorescent substance other than the double fluoride fluorescent substance used in the range which does not impair the objective of this invention.
  • the total content rate of the fluorescent substance in the fluorescent substance containing resin layer of this invention is 1.5 to 90 mass%.
  • the resin of the phosphor-containing resin layer a transparent or translucent resin can be used.
  • a thermosetting resin such as a silicone resin or an epoxy resin can be used.
  • the phosphor-containing resin layer may be formed by mixing and dispersing a phosphor in an uncured resin composition and applying it to the surface of a blue LED chip or blue LED package and curing it.
  • the phosphor-containing resin layer may be separately cured and molded to be disposed in front of the light emitting direction of the blue LED chip or the blue LED package.
  • thermoplastic resins such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polycarbonate, polystyrene, acrylic resin, and ABS resin are used singly or in combination of two or more. You can also.
  • thermoplastic resin the thermoplastic resin and the phosphor are kneaded, and the phosphor is dispersed in the thermoplastic resin and molded to obtain a phosphor-containing resin layer, which is emitted from a blue LED chip or a blue LED package. What is necessary is just to arrange
  • the phosphor-containing resin layer can be molded by a known molding method such as compression molding, extrusion molding, injection molding, or the like, and may be molded into a desired size in any shape such as a film shape or a thin plate shape.
  • the shape and size of the phosphor-containing resin layer may be appropriately selected according to the usage mode of the phosphor-containing resin layer, and are not particularly limited, but the thickness is usually 0.02 to 5 mm. .
  • an additive may be used in the phosphor-containing resin layer as long as the object of the present invention is not impaired.
  • Additives include silica, alumina, mica, yttria, zinc oxide, zirconia for the purpose of improving weather resistance such as deterioration due to ultraviolet rays, for the purpose of light scattering for promoting light scattering, or for the purpose of coloring.
  • Additives such as blue pigments, green pigments, yellow pigments and red pigments can be used.
  • the content of the additive is usually 10% by mass or less, particularly 0.01% by mass or more and 5% by mass or less in the phosphor-containing resin layer.
  • the lighting device of the present invention preferably employs a remote phosphor system in which the phosphor-containing resin layer is disposed away from the blue LED package via a gas layer or a vacuum layer.
  • the remote phosphor illumination device has a light distribution characteristic different from that of general LED illumination, such as surface emission and a large radiation angle.
  • general LED illumination such as surface emission and a large radiation angle.
  • the distance from the optical axis of the illumination device is around 507 nm. It is preferable that a large amount of light with a wavelength is emitted, and remote phosphor illumination with a large emission angle distribution is a more useful illumination device as outdoor illumination than a method in which a phosphor is arranged on a blue chip.
  • the light (irradiation light) emitted from the illumination device of the present invention is a light in which the light emitted from the blue LED, the light emitted from the LuAG phosphor, and the light emitted from the double fluoride phosphor are mixed.
  • the ratio of the phosphor used may be adjusted, and is expressed by the above composition formula (1) that emits light when excited by blue light. This can be achieved by adjusting the ratio between the LuAG phosphor and the double fluoride phosphor represented by the above composition formula (2) that emits light when excited by blue light.
  • the ratio between the LuAG phosphor represented by the composition formula (1) and the double fluoride phosphor represented by the composition formula (2) [(LuAG phosphor): (double fluoride fluorescence). Body)] is preferably 1: 0.1 to 1:10, more preferably 1: 0.5 to 1: 4 in terms of mass ratio.
  • the ratio S1 / S2 between the intensity S1 of the broad emission peak at a wavelength of 460 to 620 nm and the intensity S2 of the emission peak of the emission line spectrum near 630 nm is 0.5 or more and 0. If it is .9 or less, ⁇ uv corresponding to the deviation from the black body radiation of the luminescent color of the illumination device can be set to ⁇ 0.03 to +0.03. By selecting such light emission conditions, the illumination color of the lighting device becomes an illumination close to white, and it is possible to suppress the irradiation light from giving an unpleasant impression to human eyes.
  • the illumination color has a light emission color that gives a more comfortable impression with a smaller deviation from the black body radiation of the light emission color.
  • S1 / S2 is less than 0.5 or more than 0.9
  • ⁇ uv may be less than -0.03 or more than +0.03.
  • the emission color is deviated from white and is not suitable for illumination. There is a risk of becoming a color.
  • the emission peak of the emission line spectrum is around 630 nm. Does not exist, and the value of ⁇ uv exceeds 0.03, resulting in a light emission color close to blue or green.
  • the illuminating device of the present invention includes a wavelength with high visibility at a scotopic level and a twilight level corresponding to a change in visibility based on the Purkinje effect, but the emission color deviates from black body radiation. Therefore, the lighting device has a luminescent color that gives a comfortable impression.
  • the lighting device (lighting fixture) of the present invention is installed in outdoor lighting at night or in places with poor brightness (places where there is no light in the surroundings), particularly on sidewalks, roadways, open spaces, residential areas, tunnels, and the like.
  • Outdoor lighting such as street light, is suitable for outdoor use, but is suitable for use in dark places or under twilight, so indoor lighting, That is, it is also suitable for indoor use.
  • the fired body thus obtained was crushed with a ball mill, washed with about 0.5 mol / L hydrochloric acid, washed with pure water, separated into solid and liquid, and dried to obtain an average particle size of 20 ⁇ m.
  • Lu 3 Al 5 O 12 Ce 3+ phosphor particles (Ce activation rate with respect to Lu was 1 mol%) were obtained.
  • the results of XRD analysis of the phosphor particles are shown in FIG.
  • the diffraction pattern of this phosphor particle confirms that the main phase is coincident with the diffraction peak of the lutetium aluminum garnet phase, and Lu 3 Al 5 O 12 : Ce 3+ containing the garnet phase as the main phase is obtained. It was done.
  • K 2 (Si 0.97 Mn 0.03 ) F 6 phosphor particles having an average particle diameter of 21 ⁇ m were obtained according to the method described in US Pat. No. 3,576,756 (Patent Document 5).
  • Patent Document 5 When the emission spectrum of the obtained phosphor particles by blue light excitation at a wavelength of 450 nm was measured, it was confirmed that the phosphor particles had a plurality of emission peaks centered around 630 nm.
  • a total amount of Lu 3 Al 5 O 12 : Ce 3+ phosphor particles and K 2 (Si 0.97 , Mn 0.03 ) F 6 phosphor particles in a transparent epoxy resin (SpeciFix-40 kit) manufactured by Marumoto Struers Co., Ltd. And 30% by mass with a mass ratio of (Lu 3 Al 5 O 12 : Ce 3+ phosphor) :( K 2 (Si 0.97 , Mn 0.03 ) F 6 phosphor) 2: 1.
  • LED packages Seven of these LED packages are connected in series in a state where they are installed in a rectangular aluminum chassis with internal dimensions of 39 mm wide, 220 mm long and 5 mm high, and as a protective cover at a position 25 mm from the light emitting surface of the LED package.
  • a 2 mm thick transparent mat acrylic plate was attached to produce LED lighting (illumination device) as shown in FIG.
  • 1 is an LED package
  • 2 is an aluminum chassis
  • 3 is a protective cover
  • 4 is a power supply terminal
  • 5 is a switch.
  • the spectrum of the irradiation light of this LED illumination was measured with a spectrophotometer (Konica Minolta Co., Ltd., CL-500, the same shall apply hereinafter). The results are shown in FIG. S1 / S2 of this spectrum was 0.79. Further, ⁇ uv of this LED illumination was measured with a total luminous flux measuring device (manufactured by Otsuka Electronics Co., Ltd., total luminous flux measurement ( ⁇ 500) system, model HalfMoon, the same applies hereinafter), and found to be +0.022.
  • Example 2 7 blue LED packages made by Cree, XLamp LX-E Royal Blue, connected in series in the same aluminum chassis as in Example 1, and further, 25 mm from the light emitting surface of the blue LED package Lu 3 Al 5 O 12 : Ce 3+ phosphor particles obtained in Example 1 and K 2 (Si 0.97 , Mn 0.03 ) F 6 phosphor particles, respectively, with a phosphor concentration of 1.8% by mass, A 2 mm thick polycarbonate plate kneaded and molded into polycarbonate at 7.2% by mass was attached as a phosphor-containing resin layer to produce a remote phosphor type LED illumination as shown in FIG.
  • reference numeral 3 in FIG. 2 denotes a phosphor-containing resin layer having a function as a protective cover.
  • the spectrum of the irradiation light of this LED illumination was measured with a spectrophotometer. The results are shown in FIG. S1 / S2 of this spectrum was 0.55. Further, ⁇ uv of this LED illumination was measured with a total luminous flux measuring apparatus, and was ⁇ 0.018.
  • the LED lights of Examples 1 and 2 and Comparative Example 1 were mounted at a position 3 m high from the asphalt road of the temporary pole to form an LED street light, lighted at a voltage of 24 V at night, and the starting point 10 m away from directly under the LED light From the viewpoint of 30 people, the road surface and its surroundings were evaluated by slowly walking to the end point directly under the LED lighting.
  • the results are shown in Table 1.
  • the ratio in Table 1 is the ratio of those who affirmed each item in the table
  • the numerical value in parentheses is the number of persons who affirmed each item in the table.
  • the LED illuminations of Examples 1 and 2 are equivalent or superior in any evaluation items, and in particular, color discrimination and illumination light look natural. It was excellent in terms, and the peripheral part felt bright, and it was found to be excellent in dark field and dim field.
  • the LED lighting of Example 1 is effective for visibility in a wide space such as the brightness of the entire space and a sense of brightness in the surrounding area, and was found to be excellent as outdoor lighting. In addition, it was found that a high degree of satisfaction was obtained with regard to the color recognition of the surrounding scenery and whether it looks natural lighting colors. In Example 2 in which the remote phosphor system was used, it was further found that non-dazzling illumination with less shadows was obtained due to the spread of light due to surface emission. ADVANTAGE OF THE INVENTION According to this invention, the illuminating device suitable for the outdoor illumination which respond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Luminescent Compositions (AREA)
  • Led Device Packages (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
PCT/JP2014/081576 2014-02-28 2014-11-28 照明装置 Ceased WO2015129116A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14883876.6A EP3115677B1 (en) 2014-02-28 2014-11-28 Lighting apparatus
CN201480076403.2A CN106030188B (zh) 2014-02-28 2014-11-28 照明装置
US15/122,043 US9988572B2 (en) 2014-02-28 2014-11-28 Lighting apparatus
KR1020167025703A KR102088211B1 (ko) 2014-02-28 2014-11-28 조명 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014037808A JP6036728B2 (ja) 2014-02-28 2014-02-28 照明装置
JP2014-037808 2014-02-28

Publications (1)

Publication Number Publication Date
WO2015129116A1 true WO2015129116A1 (ja) 2015-09-03

Family

ID=54008459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/081576 Ceased WO2015129116A1 (ja) 2014-02-28 2014-11-28 照明装置

Country Status (7)

Country Link
US (1) US9988572B2 (enExample)
EP (1) EP3115677B1 (enExample)
JP (1) JP6036728B2 (enExample)
KR (1) KR102088211B1 (enExample)
CN (1) CN106030188B (enExample)
TW (1) TWI638029B (enExample)
WO (1) WO2015129116A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291142A (zh) * 2015-11-26 2018-07-17 通用电气公司 用于合成发红光磷光体的方法以及发红光磷光体

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6376225B2 (ja) * 2014-12-09 2018-08-22 信越化学工業株式会社 波長変換部材及び発光装置
JP2017027019A (ja) * 2015-07-22 2017-02-02 パナソニックＩｐマネジメント株式会社 光源装置
US11901492B2 (en) * 2015-09-10 2024-02-13 Intematix Corporation High color rendering white light emitting devices and high color rendering photoluminescence compositions
JP7599111B2 (ja) * 2019-02-21 2024-12-13 パナソニックＩｐマネジメント株式会社 薄明視環境用発光装置、屋外用照明装置及び非常用照明装置
CN110081346B (zh) * 2019-05-08 2023-11-28 安徽中益新材料科技股份有限公司 一种可提高视距的隧道照明灯及隧道照明系统
US12490357B2 (en) 2021-09-14 2025-12-02 Signify Holding B.V. Light generating system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005008844A (ja) * 2003-02-26 2005-01-13 Nichia Chem Ind Ltd 蛍光体及びそれを用いた発光装置
JP2011233511A (ja) * 2010-04-07 2011-11-17 Sharp Corp 照明装置および車両用前照灯
JP2012062444A (ja) * 2010-09-17 2012-03-29 Covalent Materials Corp 緑色蛍光体
JP2013502711A (ja) * 2009-08-17 2013-01-24 オスラム アクチエンゲゼルシャフト 高い演色評価数を有するコンバージョンｌｅｄ

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576756A (en) 1968-06-12 1971-04-27 Mallinckrodt Chemical Works Fluocomplexes of titanium, silicon, tin and germanium, activated by tetravalent manganese
US20100141172A1 (en) * 2005-02-14 2010-06-10 Mitsubishi Chemical Corporation Light Source, Solid State Light Emitting Element Module, Fluorescent Module, Light Orientation Element Module, Illumination Device, Image Display Device, and Light Source Adjustment Method
DE102005061828B4 (de) * 2005-06-23 2017-05-24 Osram Opto Semiconductors Gmbh Wellenlängenkonvertierendes Konvertermaterial, lichtabstrahlendes optisches Bauelement und Verfahren zu dessen Herstellung
US8277687B2 (en) * 2005-08-10 2012-10-02 Mitsubishi Chemical Corporation Phosphor and light-emitting device using same
JP4210707B2 (ja) 2006-10-25 2009-01-21 大阪府 屋外用照明器具及び照明方法
WO2008050850A1 (en) 2006-10-25 2008-05-02 Osaka Prefectural Government Outdoor illuminating device and illuminating method
JP4277047B1 (ja) 2007-12-19 2009-06-10 広島化成株式会社 Ｌｅｄランプ
US8598618B2 (en) * 2008-04-17 2013-12-03 Kabushiki Kaisha Toshiba White light emitting device, backlight, liquid crystal display device, and illuminating device
FI20095967L (fi) * 2009-09-18 2011-03-19 Valoya Oy Valaisinsovitelma
JP5795771B2 (ja) * 2009-12-17 2015-10-14 コーニンクレッカ フィリップス エヌ ヴェ 光源および波長変換構成要素を含む照明デバイス
KR101717668B1 (ko) * 2010-03-26 2017-03-17 삼성전자주식회사 복합 결정 형광체, 발광장치, 디스플레이 장치 및 조명장치
JP4962638B2 (ja) 2010-05-27 2012-06-27 鳥取電子株式会社 照明装置
US9133392B2 (en) * 2010-07-22 2015-09-15 Osram Opto Semiconductors Gmbh Garnet material, method for its manufacturing and radiation-emitting component comprising the garnet material
JP5568203B2 (ja) 2010-08-05 2014-08-06 広島化成株式会社 屋外用照明器具
JP5732059B2 (ja) * 2010-08-31 2015-06-10 株式会社東芝 Ｌｅｄ電球
JP4974310B2 (ja) * 2010-10-15 2012-07-11 三菱化学株式会社 白色発光装置及び照明器具
JP5864851B2 (ja) * 2010-12-09 2016-02-17 シャープ株式会社 発光装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005008844A (ja) * 2003-02-26 2005-01-13 Nichia Chem Ind Ltd 蛍光体及びそれを用いた発光装置
JP2013502711A (ja) * 2009-08-17 2013-01-24 オスラム アクチエンゲゼルシャフト 高い演色評価数を有するコンバージョンｌｅｄ
JP2011233511A (ja) * 2010-04-07 2011-11-17 Sharp Corp 照明装置および車両用前照灯
JP2012062444A (ja) * 2010-09-17 2012-03-29 Covalent Materials Corp 緑色蛍光体

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3115677A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291142A (zh) * 2015-11-26 2018-07-17 通用电气公司 用于合成发红光磷光体的方法以及发红光磷光体
US10920136B2 (en) 2015-11-26 2021-02-16 Current Lighting Solutions, Llc Processes for synthesizing red-emitting phosphors and related red-emitting phosphors
CN108291142B (zh) * 2015-11-26 2021-03-12 卡任特照明解决方案有限责任公司 用于合成发红光磷光体的方法以及发红光磷光体

Also Published As

Publication number Publication date
US20170009131A1 (en) 2017-01-12
TW201534687A (zh) 2015-09-16
KR20160127037A (ko) 2016-11-02
KR102088211B1 (ko) 2020-03-12
CN106030188B (zh) 2020-06-12
EP3115677A4 (en) 2017-09-06
US9988572B2 (en) 2018-06-05
JP2015162403A (ja) 2015-09-07
EP3115677A1 (en) 2017-01-11
JP6036728B2 (ja) 2016-11-30
CN106030188A (zh) 2016-10-12
EP3115677B1 (en) 2019-07-10
TWI638029B (zh) 2018-10-11

Similar Documents

Publication Publication Date Title
JP6036728B2 (ja) 照明装置
CN112349825B (zh) 白色光源系统以及屋内照明装置
US11248750B2 (en) LED lighting units, materials, and optical components for white light illumination
JP6726857B2 (ja) 道路灯
JP6861389B2 (ja) 屋外用照明装置
JP2015008061A (ja) 屋外照明
JP6471756B2 (ja) 車載ヘッドライト用ｌｅｄ光源
CN110081346A (zh) 一种可提高视距的隧道照明灯及隧道照明系统
JP7614550B2 (ja) 発光装置、灯具及び街路灯
JP7695594B2 (ja) 発光装置、灯具及び街路灯
JP7688305B2 (ja) 発光装置、灯具及び街路灯

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14883876

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2014883876

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2014883876

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 15122043

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20167025703

Country of ref document: KR

Kind code of ref document: A