CN104676457A - High-coloration white-light LED lamp and preparation method thereof - Google Patents
High-coloration white-light LED lamp and preparation method thereof Download PDFInfo
- Publication number
- CN104676457A CN104676457A CN201310628688.3A CN201310628688A CN104676457A CN 104676457 A CN104676457 A CN 104676457A CN 201310628688 A CN201310628688 A CN 201310628688A CN 104676457 A CN104676457 A CN 104676457A
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- Prior art keywords
- led
- lamp housing
- white
- substance
- show color
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- 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
- F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
-
- 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
- F21Y2101/00—Point-like light sources
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention provides a high-coloration white-light LED lamp and a preparation method thereof; the preparation method comprises the steps: sufficiently mixing a color-rendering substance with an adhesive, a dispersant and a solvent to form mixture, wherein the color-rendering substance is one or a plurality of of oxides of rare-earth lanthanum, cerium, praseodymium, neodymium, holmium and erbium or phosphate, silicate and carbonate thereof; uniformly coating the mixture on the internal surface or external surface of the external lamp shell of the white-light LED lamp; and drying the external lamp shell of the white-light LED lamp at high temperature.
Description
Technical field
The present invention relates to lighting technical field, especially a kind of high colour developing white LED lamp and preparation method thereof.
Background technology
LED(Light Emitting Diode, light emitting diode) there is the advantages such as energy-saving and environmental protection, be widely used in the every field of living, producing.At present, field of LED illumination, adopts the mode of white light LEDs mixing red-light LED usually, or adopts the mode of adding red fluorescence powder to realize high-color rendering in white light, and the former drive circuit is complicated, and long-term reliability is poor, and light decay is large, and look drift is large.The quantum efficiency of the latter's red fluorescence powder is low, and price is very expensive.
How to provide a kind of reliability high, height colour developing white LED lamp that cost is low and preparation method thereof is one of current lighting technical field problem demanding prompt solution.
Summary of the invention
Technical scheme of the present invention is for providing a kind of high colour developing white LED lamp, the outer lamp housing of above-mentioned LED comprises substance that show color, described substance that show color is by Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more compositions of carbonate.
Preferably, above-mentioned substance that show color is coated in inner surface or the outer surface of outer lamp housing.
Preferably, the outer lamp housing of above-mentioned LED is mixed by the uniform particles of substance that show color and glass or PC or PMMA.
A preparation method for high colour developing white LED lamp, comprises step:
Substance that show color and binding agent, dispersant and solvent are carried out being thoroughly mixed to form mixture, wherein, substance that show color is by Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more compositions of carbonate;
Described mixture is evenly coated in inner surface or the outer surface of the outer lamp housing of white LED lamp;
Outer for white LED lamp lamp housing is carried out hyperthermia drying.
A preparation method for high colour developing white LED lamp, comprises step:
By Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more of carbonate mix with the uniform particles of glass or PC or PMMA, form the outer lamp housing of LED;
Outer lamp housing is positioned over above White-light LED chip, forms high colour developing white LED lamp.
Preferably, above-mentioned outer lamp housing can absorb the wavelength of 570 ~ 590nm.
Preferably, the half width of above-mentioned wavelength is within the scope of 10 ~ 20nm.
Preferably, the absorption spectrum according to the substance that show color of above-mentioned outer lamp housing carrys out selected White-light LED chip, and White-light LED chip reference color temperature is 2500-7000K.
Preferably, by the percent value regulating above-mentioned substance that show color to account for whole outer lamp housing weight, the colour rendering index size of LED can be promoted.
Preferably, above-mentioned percent value scope is 0.1% ~ 20%.
The invention provides a kind of reliability high, height colour developing white LED lamp that cost is low and preparation method thereof is one of current lighting technical field problem demanding prompt solution.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention method flow schematic diagram;
Fig. 2 is the luminescent spectrum distribution map in the embodiment of the present invention after spectrum repairing.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, one height colour developing white LED lamp that the present invention proposes and preparation method thereof is described in further detail.
The present invention proposes a kind of preparation method of high colour developing white LED lamp, adopt a kind of technique direction different from conventional method, to the white light LEDs of general colour rendering, spectrum repairing is carried out at places such as 570 ~ 590nm, obtain high-color rendering LED, its product reliability is high, and cost is low.
Fig. 1 is embodiment of the present invention method flow schematic diagram; Fig. 2 is the luminescent spectrum distribution map in the embodiment of the present invention after spectrum repairing.
A kind of high colour developing white LED lamp, the outer lamp housing of this LED comprises substance that show color, this substance that show color is by Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more compositions of carbonate.This substance that show color is coated in inner surface or the outer surface of outer lamp housing.
In another embodiment of the invention, the outer lamp housing of this LED also can be mixed by the uniform particles of substance that show color and glass or PC or PMMA.
A preparation method for high colour developing white LED lamp, comprises step:
Substance that show color and binding agent, dispersant and solvent are carried out being thoroughly mixed to form mixture, wherein, substance that show color is by Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more compositions of carbonate;
This mixture is evenly coated in inner surface or the outer surface of the outer lamp housing of white LED lamp;
Outer for white LED lamp lamp housing is carried out hyperthermia drying.
In another embodiment of the invention, a kind of preparation method of high colour developing white LED lamp, comprises step:
By Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more of carbonate mix with the uniform particles of glass or PC or PMMA, form the outer lamp housing of LED;
Outer lamp housing is positioned over above White-light LED chip, forms high colour developing white LED lamp.
Above-mentioned outer lamp housing can absorb the wavelength of 570 ~ 590nm, and the half width of wavelength is within the scope of 10 ~ 20nm.
Further, in embodiments of the present invention, the rare earth oxide of outer lamp housing or its phosphate, silicate, the absorption spectrum of carbonate carrys out selected White-light LED chip, and White-light LED chip reference color temperature is 2500-7000K.
Specifically, in embodiments of the present invention, be by regulating described rare earth oxide or its phosphate, silicate, carbonate accounts for the percent value of whole outer lamp housing weight, can promote the colour rendering index size of LED, and percent value scope is 0.1% ~ 20%.
Specifically, in embodiments of the present invention, mixture is evenly coated in inner surface or the outer surface of the outer lamp housing of white LED lamp, the method for coating is spraying, inhales and is coated with, electrostatic spraying, sputtering.
Specifically, in embodiments of the present invention, outer for white LED lamp lamp housing is carried out hyperthermia drying, and the temperature range of hyperthermia drying is at 25 ~ 300 DEG C.
Specifically, in embodiments of the present invention, be positioned over above White-light LED chip by outer lamp housing, form high colour developing white LED lamp, the space length between outer lamp housing and LED chip is greater than 1mm.
In the embodiment of the present invention first embodiment, Y2O3 and the 10g Pr2O7 having taken 30g mixes with the binding agent of identical weight; Then the inner surface of lamp housing is evenly coated in; And dry at 100 DEG C, time 30min.Coating weight is 4% of whole lampshade.Be placed on by lampshade on common white LED lamp and carry out contrast test, colour rendering index CRI brings up to 85.9, R9 from 76.4 and brings up to 57.8 from-8.1.Colour temperature is 6548K, and color tolerance SDCM is 2.2.Concrete test data is as shown in the table:
In the embodiment of the present invention second embodiment, taken Nd2O3 and the 100g CeO2 of 400g, be entrained in the frit of 40kg, the cloche containing rare earth is made in melting; Lampshade is placed on common white LED lamp and carries out contrast test, and colour rendering index CRI brings up to 91.3, R9 from 83.7 and brings up to 63.2 from 25.4.Colour temperature is 3979K, and color tolerance SDCM is 1.8.Concrete test data is as shown in the table:
Be illustrated in figure 2 the luminescent spectrum distribution map after the repairing of the embodiment of the present invention second embodiment spectrum.
In the embodiment of the present invention the 3rd embodiment, take the silica gel Homogeneous phase mixing of CeO2 and the 100g of 4g; Make circular silica gel piece, silica gel piece is placed on common white light LED down lamp and carries out contrast test, and colour rendering index CRI brings up to 90.9, R9 from 82.9 and brings up to 57.7 from 24.1.Colour temperature is 3042K, and color tolerance SDCM is 3.6.Concrete test data is as shown in the table:
Description of the preferred embodiment of the present invention is to illustrate and describing above, and undesired is limit of the present invention or be confined to disclosed concrete form, obviously, many modifications and variations may be made, these modifications and variations may be obvious to those skilled in the art, should be included within the scope of the present invention that defined by appended claims.
Claims (10)
1. one kind high colour developing white LED lamp, it is characterized in that, the outer lamp housing of described LED comprises substance that show color, described substance that show color by Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more compositions of carbonate.
2. LED according to claim 1, is characterized in that, described substance that show color is coated in inner surface or the outer surface of outer lamp housing.
3. LED according to claim 1, is characterized in that, the outer lamp housing of described LED is mixed by the uniform particles of substance that show color and glass or PC or PMMA.
4. a preparation method for high colour developing white LED lamp, is characterized in that, comprise step:
Substance that show color and binding agent, dispersant and solvent are carried out being thoroughly mixed to form mixture, wherein, substance that show color is by Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more compositions of carbonate;
Described mixture is evenly coated in inner surface or the outer surface of the outer lamp housing of white LED lamp;
Outer for white LED lamp lamp housing is carried out hyperthermia drying.
5. a preparation method for high colour developing white LED lamp, its feature in, comprise step:
By Rare Earth Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), holmium (Ho), the oxide of erbium (Er) or its phosphate, silicate, one or more of carbonate mix with the uniform particles of glass or PC or PMMA, form the outer lamp housing of LED;
Outer lamp housing is positioned over above White-light LED chip, forms high colour developing white LED lamp.
6. LED according to claim 1, is characterized in that, described outer lamp housing can absorb the wavelength of 570 ~ 590nm.
7. LED according to claim 6, is characterized in that, the half width of described wavelength is within the scope of 10 ~ 20nm.
8. LED according to claim 1, is characterized in that, the absorption spectrum according to the substance that show color of described outer lamp housing carrys out selected White-light LED chip, and White-light LED chip reference color temperature is 2500-7000K.
9. LED according to claim 1, is characterized in that, by the percent value regulating described substance that show color to account for whole outer lamp housing weight, can promote the colour rendering index size of LED.
10. LED according to claim 9, is characterized in that, described percent value scope is 0.1% ~ 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628688.3A CN104676457A (en) | 2013-11-29 | 2013-11-29 | High-coloration white-light LED lamp and preparation method thereof |
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| CN201310628688.3A CN104676457A (en) | 2013-11-29 | 2013-11-29 | High-coloration white-light LED lamp and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398157A (en) * | 2016-08-18 | 2017-02-15 | 厦门通士达照明有限公司 | A method of increasing a special color rendering index R9 in LED lamps |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102483220A (en) * | 2009-04-15 | 2012-05-30 | 研究三角协会 | Stimulated lighting devices |
| CN102782396A (en) * | 2010-03-01 | 2012-11-14 | 松下电器产业株式会社 | LED lamp, LED illumination device, and LED module |
| CN103080635A (en) * | 2010-09-17 | 2013-05-01 | 株式会社东芝 | LED light bulb |
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2013
- 2013-11-29 CN CN201310628688.3A patent/CN104676457A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102483220A (en) * | 2009-04-15 | 2012-05-30 | 研究三角协会 | Stimulated lighting devices |
| CN102782396A (en) * | 2010-03-01 | 2012-11-14 | 松下电器产业株式会社 | LED lamp, LED illumination device, and LED module |
| CN103080635A (en) * | 2010-09-17 | 2013-05-01 | 株式会社东芝 | LED light bulb |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398157A (en) * | 2016-08-18 | 2017-02-15 | 厦门通士达照明有限公司 | A method of increasing a special color rendering index R9 in LED lamps |
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Application publication date: 20150603 |