CN103775873A - LED lamp with purple light transformed into white light and manufacturing method thereof - Google Patents
LED lamp with purple light transformed into white light and manufacturing method thereof Download PDFInfo
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- CN103775873A CN103775873A CN201410007358.7A CN201410007358A CN103775873A CN 103775873 A CN103775873 A CN 103775873A CN 201410007358 A CN201410007358 A CN 201410007358A CN 103775873 A CN103775873 A CN 103775873A
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Abstract
The invention discloses a LED lamp with purple light transformed into white light and a manufacturing method of the LED lamp. The LED lamp is composed of a light transformation plate (1), a fluorescent powder layer (2), a heat radiator (3), an insulation piece (4), an LED purple light source (5), a substrate (6), a lamp cap (7) and a driver (8), fluorescent powder capable of being excited by purple-light LEDs is adopted, the LED lamp is manufactured through the light transformation plate, most of the purple light is transformed into visible light, the light biosecurity of the lamp is improved, light biohazards are avoided under high power and long-time irradiation, meanwhile, the broadband-spectrum phosphorus aluminate fluorescent powder capable of being excited by the purple light is adopted, and the manufactured LED lamp is high in color rendering and good in consistency, and has good application value.
Description
Technical field
The present invention relates to a kind of lighting source, be specifically related to a kind of purple light conversion of white light LED lamp and manufacture method thereof.
Background technology
Along with the fast development of LED technology, white light LEDs is because its light efficiency is high, and the many advantages of the storages such as environmental protection, life-span have become the focus of countries in the world research.In existing technical field, the implementation of the white light LEDs of comparative maturity is by the method for blue chip excitation fluorescent material, but in spectrum, ruddiness is less, the white light LEDs colour rendering of making is not high, be difficult to meet the requirement to illumination high-color rendering light source, simultaneously because the blue light of chip is stronger, high-power, there is photo-biological harm while irradiating for a long time.
The technology of purple light conversion of white light LED is being risen, the mechanism of utilizing purple LED to excite to obtain white light is that the ultraviolet and black light (300～400nm) excitated fluorescent powder that send by purple LED are luminous, the light that fluorescent material sends is by being mixed to get white light, in order further to improve the luminous efficiency, the colour rendering index etc. that improve LED conversion of white light into purple light, make it reach practical, the research of purple LED has in recent years obtained the development of leap, becomes the most active field of current research.
The object of the invention is in order to improve existing white LED lamp colour rendering not highly, have the shortcoming of photo-biological harm and a kind of purple light conversion of white light LED lamp is provided, realize green illumination, resources conservation, the object of energy-conserving and environment-protective, photo-biological safety.
Summary of the invention
The object of this invention is to provide a kind of purple light conversion of white light LED lamp, formed by light converting plate (1), phosphor powder layer (2), radiator (3), insulating part (4), LED purple light light source (5), substrate (6), lamp holder (7), driving (8), wherein said fluorescent material is made up of aluminophosphates fluorescent material, and described phosphor powder layer is made up of aluminophosphates fluorescent material and nano aluminium oxide.
Described aluminophosphates fluorescent material can effectively be excited by purple LED, and emission spectrum scope is 400～700nm, and its chemical formula is M
aal
b(PO
4)
6: Sb
c, R
d, wherein: M is Ca, Sr, Ba, one or more in tetra-kinds of elements of Mg, R is Y, La, Eu, Ce, Tb, Dy, at least one in Mn, a, b, c, d is mole coefficient, its scope is: 3<a<6,2<b<4,0.005<c<0.5,0.01<d<1.6.
Described phosphor powder layer is made up of aluminophosphates fluorescent material and nano aluminium oxide, binding agent is polyethylene glycol oxide, solvent is deionized water, the mass percent that described its raw material components of fluorescent coating slurry and each component account for raw material total amount is aluminophosphates fluorescent material 60～80%, nano aluminium oxide is 5～10%, binding agent is 0.5～5%, and solvent is 14.5～25%
Described light converting plate is made up of the one in glass, acrylic, PMMA.
The present invention also provides the preparation method of above-mentioned purple light conversion of white light LED lamp, and its concrete steps are:
A. the preparation of fluorescent material: according to chemical formula M
aal
b(PO
4)
6: Sb
c, R
d, take raw material by a mole proportioning for each element, what raw material were water-soluble is directly dissolved in deionized water, the water-fast nitric acid that is first dissolved in of raw material, mix again, in mixed solution, add in addition certain combustion adjuvant, after mixing, put into 500～700 ℃ of muffle furnaces, after calcination 5～30min, from muffle furnace, take out, after cooling, sieve, obtain precursor body, in the presoma making, add flux, after mixing, put into high temperature sintering electric furnace, at the roasting 2～5hr of 900～1100 ℃, by roasting material cooled to room temperature, pulverize, sieve, obtain aluminophosphates fluorescent material,
B. the preparation of phosphor powder layer: will account for the fluorescent material of fluorescent powder paste material gross mass percentage 60～80%, 5～10% nano aluminium oxide, 0.5～5% binding agent, 14.5～25% solvent adds in the container with mixer, open mixer, control turn/min of rotating speed 180～220, stir 4～8hr; The phosphor slurry preparing is coated on light converting plate (1), the light converting plate (1) that is coated with fluorescent material is placed on dryer and is dried, then put into baking box, at 500～540 ℃ of baking 10～20min, make the light converting plate (1) that scribbles phosphor powder layer;
C. LED purple light light source (5) and radiator (3), insulating part (4), substrate (6), lamp holder (7), driving (8) are fitted together, finally load onto the light converting plate (1) that scribbles phosphor powder layer, make purple light conversion of white light LED lamp.
Beneficial effect:
The present invention adopts the wide spectrum aluminophosphates fluorescent material that can be excited by purple LED, mode by light converting plate is prepared white LED lamp, most purple light is converted to visible ray, improve the photo-biological security of lamp, unglazed biohazard in the time of high-power and long-time irradiation, simultaneously aluminophosphates fluorescent material transmitting boundary wide (400～700nm), transmitting main peak is adjustable, the LED lamp colour rendering of preparing is high, and high conformity, has good using value.
Accompanying drawing explanation
Fig. 1 is the structural representation of patent of the present invention, wherein 1 light converting plate, and 2 phosphor powder layers, 3 radiators, 4 insulating parts, 5LED purple light light source, 6 substrates, 7 lamp holders, 8 drive;
Fig. 2 is LED purple light light source light spectrogram;
Fig. 3 is aluminophosphates fluorescent material spectrogram;
Fig. 4 is embodiment 4 purple light conversion of white light LED light spectrograms.
The specific embodiment
A. the preparation of fluorescent material: take Ca (NO
3)
2.4H
2o8.2653g, Al (NO
3)
3.9H
2o10.5036g, Sb
2o
30.1458g, MnCO
30.5748g, Eu
2o
30.8798g, (NH4)
2hPO
47.9233g, it is pure that above raw material is top grade, by Ca (NO
3)
2.4H
2o, Al (NO
3)
3.9H
2o, (NH
4)
2hPO
4be mixed together and be dissolved in deionized water; By Sb
2o
3, MnCO
3, Eu
2o
3put into 100ml beaker, mix, add deionized water, make mixture become uniform pastel, drip red fuming nitric acid (RFNA), pastel is all dissolved, then add Ca (NO
3)
2.4H
2o, Al (NO
3)
3.9H
2o, (NH
4)
2hPO
4mixed solution in; Separately get a 100ml beaker, add 30g combustion adjuvant, add 20ml deionized water, make it whole dissolvings, then solution is added in 100ml corundum crucible together with aforesaid mixed liquor, put into the muffle furnace that is warming up to 550 ℃, calcination 15min, takes out, after cooling, sieve, obtain precursor body; In the presoma making, add flux 0.15g, after mixing, put into high temperature sintering electric furnace, at 950 ℃ of roasting 3h; Roasting material cooled, to room temperature, is pulverized, sieved, obtaining chemical formula is Ca
3.5al
2.8(PO
4)
6: Sb
0.1, Mn
0.5, Eu
0.5aluminophosphates fluorescent material;
B. the preparation of phosphor powder layer: take aluminophosphates fluorescent material 1.1g, 0.12g nano aluminium oxide, 0.03g polyethylene glycol oxide, 0.40g deionized water adds in the container with mixer, opens mixer, controls turn/min of rotating speed 200, stirs 6hr; The phosphor slurry preparing is coated on light converting plate (1), the light converting plate (1) that is coated with fluorescent material is placed on dryer and is dried, then put into baking box, at 530 ℃ of baking 15min, make the light converting plate (1) that scribbles phosphor powder layer;
C.LED lamp preparation: LED purple light light source (5) and radiator (3), insulating part (4), substrate (6), lamp holder (7), driving (8) are fitted together, finally load onto the light converting plate (1) that scribbles phosphor powder layer, be assembled into purple light conversion of white light LED lamp.
Embodiment 2:
A. the preparation of fluorescent material: take Sr (NO
3)
29.5233g, Al (NO
3)
3.9H
2o7.8777g, Sb
2o
30.0233g, Tb
4o
70.4573g, CeO
20.5163g, NH
4h
2pO
46.9018g, by Sr (NO3) 2, Al (NO
3)
3.9H
2o, NH
4h
2pO
4be mixed together and be dissolved in deionized water, by Sb
2o
3, Tb
4o
7, CeO
2put into 100ml beaker, mix, add deionized water, make mixture become uniform pastel, drip red fuming nitric acid (RFNA), pastel is all dissolved, then add Sr (NO
3)
2, Al (NO
3)
3.9H
2o, NH
4h
2pO
4in mixed solution, separately get a 100ml beaker, add 76.8232gCH
6n
4o, adds 20ml deionized water, makes it whole dissolvings, and this solution is added in 100ml corundum crucible together with aforesaid mixed liquor, puts into the muffle furnace that is warming up to 600 ℃, and calcination 10min takes out, and sieves after cooling, obtains precursor body; In the presoma making, add 0.6g flux, after mixing, put into high temperature sintering electric furnace, at 1000 ℃ of roasting 4h; Roasting material cooled, to room temperature, is pulverized, sieved, obtaining chemical formula is Sr
4.5al
2.1(PO
4)
6: Sb
0.16, Tb
0.5, Ce
0.3aluminophosphates fluorescent material;
B. the preparation of phosphor powder layer: take aluminophosphates fluorescent material 2.1g, 0.25g nano aluminium oxide, 0.15g polyethylene glycol oxide, 0.70g deionized water adds in the container with mixer, opens mixer, controls turn/min of rotating speed 220, stirs 4hr; The phosphor slurry preparing is coated on light converting plate (1), the light converting plate (1) that is coated with fluorescent material is placed on dryer and is dried, then put into baking box, at 520 ℃ of baking 20min, make the light converting plate (1) that scribbles phosphor powder layer;
C.LED lamp preparation: LED purple light light source (5) and radiator (3), insulating part (4), substrate (6), lamp holder (7), driving (8) are fitted together, finally load onto the light converting plate (1) that scribbles phosphor powder layer, be assembled into purple light conversion of white light LED lamp.
A. the preparation of fluorescent material: take BaCO
37.894g, Al (NO
3)
3.9H
2o12.0042g, Sb
2o
30.2915g, Eu
2o
30.8798g, Dy
2o
30.1865g, (NH
4)
2hPO
47.9233g, by Al (NO
3)
3.9H
2o, (NH
4)
2hPO
4be mixed together and be dissolved in deionized water, by BaCO
3, Sb
2o
3, Eu
2o
3, Dy
2o
3put into 100ml beaker, mix, add deionized water, make mixture become uniform pastel, drip red fuming nitric acid (RFNA), pastel is all dissolved, add Al (NO
3)
3.9H
2o, NH
4h
2pO
4mixed solution in, separately get a 100ml beaker, add 85gCH
6n
4o, adds 20ml deionized water, makes it whole dissolvings, then solution is added in 100ml corundum crucible together with aforesaid mixed liquor, puts into the muffle furnace that is warming up to 650 ℃, calcination 8min, take out, cooling after, sieve, obtain precursor body; . in the presoma making, add 0.5g flux, after mixing, put into high temperature sintering electric furnace, at 1100 ℃ of roasting 3hr; Roasting material cooled, to room temperature, is pulverized, sieved, obtaining chemical formula is Ba4Al
3.2(PO
4)
6: Sb
0.2, Eu
0.4, Dy
0.1aluminophosphates fluorescent material;
B. the preparation of phosphor powder layer: take aluminophosphates fluorescent material 1.1g, 0.12g nano aluminium oxide, 0.03g polyethylene glycol oxide, 0.40g deionized water adds in the container with mixer, opens mixer, controls turn/min of rotating speed 200, stirs 6hr; The phosphor slurry preparing is coated on light converting plate (1), the light converting plate (1) that is coated with fluorescent material is placed on dryer and is dried, then put into baking box, at 530 ℃ of baking 15min, make the light converting plate (1) that scribbles phosphor powder layer;
C.LED lamp preparation: LED purple light light source (5) and radiator (3), insulating part (4), substrate (6), lamp holder (7), driving (8) are fitted together, finally load onto the light converting plate (1) that scribbles phosphor powder layer, be assembled into purple light conversion of white light LED lamp.
A. the preparation of fluorescent material: take Ca (NO
3)
2.4H
2o3.542g, MgCO
31.68g, Al (NO
3)
3.9H
2o10.5036g, Sb
2o
30.4373g, MnCO
30.4598g, La
2o
30.6516g, NH
4h
2pO
46.9018g, by Ca (NO
3)
2.4H
2o, Al (NO
3)
3.9H
2o, NH
4h
2pO
4be mixed together and be dissolved in deionized water, by BaCO
3, Sb
2o
3, MnCO
3, La
2o
3put into 100ml beaker, mix, add deionized water, make mixture become uniform pastel, drip red fuming nitric acid (RFNA), pastel is all dissolved, add Ca (NO
3)
2.4H
2o, Al (NO
3)
3.9H
2o, NH
4h
2pO
4mixed solution in, separately get a 100ml beaker, add 56gCH
6n
4o, adds 20ml deionized water, makes it whole dissolvings, then solution is added in 100ml corundum crucible together with aforesaid mixed liquor, puts into the muffle furnace that is warming up to 600 ℃, calcination 15min, take out, cooling after, sieve, obtain precursor body; In the presoma making, add 0.8g flux, after mixing, put into high temperature sintering electric furnace, at 1050 ℃ of roasting 3hr; Roasting material cooled, to room temperature, is pulverized, sieved, obtaining chemical formula is Ca
1.5mg
2al
2.8(PO
4)
6: Sb
0.3, La
0.2, Mn
0.4aluminophosphates fluorescent material;
B. the preparation of phosphor powder layer: take aluminophosphates fluorescent material 2.1g, 0.25g nano aluminium oxide, 0.15g polyethylene glycol oxide, 0.70g deionized water adds in the container with mixer, opens mixer, controls turn/min of rotating speed 220, stirs 4hr; The phosphor slurry preparing is coated on light converting plate (1), the light converting plate (1) that is coated with fluorescent material is placed on dryer and is dried, then put into baking box, at 520 ℃ of baking 20min, make the light converting plate (1) that scribbles phosphor powder layer;
C.LED lamp preparation: LED purple light light source (5) and radiator (3), insulating part (4), substrate (6), lamp holder (7), driving (8) are fitted together, finally load onto the light converting plate (1) that scribbles phosphor powder layer, be assembled into purple light conversion of white light LED lamp.
Above content is in conjunction with concrete optimal technical scheme further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a purple light conversion of white light LED lamp, formed by light converting plate (1), phosphor powder layer (2), radiator (3), insulating part (4), LED purple light light source (5), substrate (6), lamp holder (7), driving (8), wherein said fluorescent material is made up of aluminophosphates fluorescent material, and described phosphor powder layer is made up of aluminophosphates fluorescent material and nano aluminium oxide.
2. purple light conversion of white light LED lamp according to claim 1, is characterized in that described aluminophosphates fluorescent material can effectively be excited by purple LED, and emission spectrum scope is 400～700nm, and its chemical formula is M
aal
b(PO
4)
6: Sb
c, R
d, wherein: M is Ca, Sr, Ba, one or more in tetra-kinds of elements of Mg, R is Y, La, Eu, Ce, Tb, Dy, at least one in Mn, a, b, c, d is mole coefficient, its scope is: 3<a<6,2<b<4,0.005<c<0.5,0.01<d<1.6.
3. purple light conversion of white light LED lamp according to claim 1, it is characterized in that described phosphor powder layer is made up of aluminophosphates fluorescent material and nano aluminium oxide, binding agent is polyethylene glycol oxide, solvent is deionized water, the mass percent that described its raw material components of fluorescent coating slurry and each component account for raw material total amount is aluminophosphates fluorescent material 60～80%, nano aluminium oxide is 5～10%, and binding agent is 0.5～5%, and solvent is 14.5～25%.
4. purple light conversion of white light LED lamp according to claim 1, is characterized in that described light converting plate is made up of the one in glass, acrylic, PMMA.
5. the preparation method of purple light conversion of white light LED lamp according to claim 1, realizes by following steps:
A. the preparation of fluorescent material: according to chemical formula M
aal
b(PO
4)
6: Sb
c, R
d, take raw material by a mole proportioning for each element, what raw material were water-soluble is directly dissolved in deionized water, the water-fast nitric acid that is first dissolved in of raw material, mix again, in mixed solution, add in addition certain combustion adjuvant, after mixing, put into 500～700 ℃ of muffle furnaces, after calcination 5～30min, from muffle furnace, take out, after cooling, sieve, obtain precursor body, in the presoma making, add flux, after mixing, put into high temperature sintering electric furnace, at the roasting 2～5hr of 900～1100 ℃, by roasting material cooled to room temperature, pulverize, sieve, obtain aluminophosphates fluorescent material,
B. the preparation of phosphor powder layer: will account for the aluminophosphates fluorescent material of fluorescent powder paste material gross mass percentage 60～80%, 5～10% nano aluminium oxide, 0.5～5% binding agent, 14.5～25% solvent adds in the container with mixer, open mixer, control turn/min of rotating speed 180～220, stir 4～8hr; The phosphor slurry preparing is coated on light converting plate (1), the light converting plate (1) that is coated with fluorescent material is placed on dryer and is dried, then put into baking box, at 500～540 ℃ of baking 10～20min, make the light converting plate (1) that scribbles phosphor powder layer;
C.LED lamp preparation: LED purple light light source (5) and radiator (3), insulating part (4), substrate (6), lamp holder (7), driving (8) are fitted together, finally load onto the light converting plate (1) that scribbles phosphor powder layer, be assembled into purple light conversion of white light LED lamp.
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|---|---|---|---|
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|---|---|---|---|
| CN201410007358.7A CN103775873B (en) | 2014-01-08 | 2014-01-08 | LED lamp with purple light transformed into white light and manufacturing method thereof |
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| CN103775873B CN103775873B (en) | 2017-01-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056838A (en) * | 2019-05-27 | 2019-07-26 | 轻工业部南京电光源材料科学研究所 | Ultraviolet upper switch plant guard lamp of one kind and preparation method thereof |
| CN110094699A (en) * | 2019-05-27 | 2019-08-06 | 轻工业部南京电光源材料科学研究所 | Ultraviolet germicidal and preparation method thereof is converted in one kind |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108513971B (en) * | 2018-03-17 | 2021-04-09 | 轻工业部南京电光源材料科学研究所 | Near ultraviolet LED mosquito repelling lamp and preparation method thereof |
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|---|---|
| CN103775873B (en) | 2017-01-11 |
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