CN101788109A - White light LED - Google Patents
White light LED Download PDFInfo
- Publication number
- CN101788109A CN101788109A CN200910206126A CN200910206126A CN101788109A CN 101788109 A CN101788109 A CN 101788109A CN 200910206126 A CN200910206126 A CN 200910206126A CN 200910206126 A CN200910206126 A CN 200910206126A CN 101788109 A CN101788109 A CN 101788109A
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- blue
- led chip
- film
- light led
- white light
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Abstract
The invention discloses a white light LED, comprising a base plate and an LED chip arranged on the base plate. A film of yellow fluorescent powder is arranged above the LED chip. In the production process, adhesive dispense is not needed, the technology is simple and the production efficiency is high; in addition, concentration and proportion of the yellow fluorescent powder contained in the film can be effectively controlled, appropriate thickness of the film can be set according to the needs of the products; therefore the optimal luminous effect of the finished product can be ensured in the production process.
Description
Technical field
The present invention relates to a kind of lighting device, particularly a kind of white light LEDs.
Background technology
Existing white light LEDs is to make after the surface-coated at blue-light LED chip is mixed with the resin of yellow fluorescent powder mostly, the general structure that adopts as shown in Figure 1 of this white light LEDs, blue-light LED chip 103 is fixed on the metallic support 101 by crystal-bonding adhesive 102, two electrodes of chip are connected respectively to the metallic support 101 at two ends by conductor wire 104, its surface also is coated with the sealing resin 105 that is mixed with yellow fluorescent powder, produce gold-tinted behind the yellow fluorescent powder in the blue-light excited sealing resin 105 of the part that blue-light LED chip 103 sends during work, produce required white light after the blue light that gold-tinted that ejects and part transmit.Generally need special-purpose point gum machine to carry out the interpolation process of above-mentioned sealing resin 105 when making this type of white light LEDs, in order to guarantee illumination effect, point gum machine must guarantee when carrying out glue that fluorescent material in the sealing resin 105 and resin stir and avoid the fluorescent material precipitation, need in addition the coating thickness and the shape size of sealing resin 105 are accurately controlled, therefore adopt the white light LEDs technology more complicated of this structure, and occur defectives such as light emission color temperature, color be inconsistent easily.
Summary of the invention
For addressing the above problem, the invention provides the white light LEDs that a kind of technology is simple, illumination effect is good.
The technical scheme that the present invention is adopted for its problem of solution is:
A kind of white light LEDs comprises substrate and is fixedly installed in blue-light LED chip on the substrate that the top of described blue-light LED chip is provided with the film that is mixed with yellow fluorescent powder.
Preferably, the present invention also comprises fin, and described substrate is close on the fin.
Preferably, be provided with louvre in the described fin, be provided with open-work with the corresponding position of louvre on the substrate.
The invention has the beneficial effects as follows: the film that the present invention will be mixed with yellow fluorescent powder is covered on the light-emitting area of blue-light LED chip, rather than the resin that will be mixed with yellow fluorescent powder directly is coated on the blue-light LED chip surface, adopt the white light LEDs of this kind structure not need to carry out a glue process in process of production, after blue-light LED chip is fixedly installed in substrate, the light-emitting area that only needs film to be fixed in blue-light LED chip gets final product, its technology is simple, the production efficiency height; In addition, the concentration of yellow fluorescent powder and ratio can be effectively controlled in the film, and film also can be provided with suitable thickness according to the needs of product, therefore can guarantee better in process of production to have best illumination effect after product is finished.
Further, when the present invention includes fin, the heat that sends during the blue-light LED chip energising can be transmitted on the fin by substrate, and blue-light LED chip has better radiating condition, has guaranteed the working life of blue chip.
Further, be provided with louvre in the fin, be provided with open-work with the corresponding position of louvre on the substrate, the heat that gathers in the fin can more promptly outwards distribute by the form of thermal convection current, and the blue-light LED chip heat radiation is faster.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the white-light LED structure figure of prior art;
Fig. 2 is a ray structure schematic diagram of the present invention;
Fig. 3 is the stereochemical structure exploded view of an embodiment of the present invention.
The specific embodiment
With reference to Fig. 2, a kind of white light LEDs of the present invention, its ray structure comprises substrate 201 and is fixedly installed in blue-light LED chip 202 on the substrate 201, the top of blue-light LED chip 202 is provided with the film 203 that is mixed with yellow fluorescent powder, wherein, film 203 general PC (polycarbonate) material or ABS (acrylonitrile-butadiene-styrene (ABS)) materials of adopting, the yellow fluorescence powder material that is mixed with in the film 203 generally adopts yttrium-aluminium-garnet (YAG) fluorescent material, in order to increase luminous power, blue-light LED chip 202 can adopt a plurality of series connection and/or form in parallel, because film 203 has high light transmittance, the light that blue-light LED chip 202 is sent can both successfully enter in the film 203 and yellow fluorescent powder generation effect, adopt the operation principle of above-mentioned blue-light LED chip and yellow fluorescent powder to be: blue-light LED chip 202 sends blue light during energising, a part produces gold-tinted behind the blue-light excited yellow fluorescent powder, and gold-tinted and another part pass the required white light of generation after the blue light of film 203.
During practical application, substrate 201 can be designed to different shapes according to the needs of different product with film 203, in the present embodiment, substrate 201 is the laminated structure of a circle, the middle part on one of them surface of substrate 201 is provided with hole groove 204, be provided with 4 blue-light LED chips 202 in the groove 204 of hole, the limit of hole groove 204 is provided with electrode, the power taking pin cross-over connection of led chip 202 is on electrode, be provided with through hole around the groove 204 of hole, the positive and negative terminal of direct current supply line passes and to blue-light LED chip 202 power supply from through hole respectively, film 203 is and the corresponding round sheet structure of the shape of substrate 201, film 203 is parallel staggered relatively with substrate 201 during installation, and film 203 is covered in the surface location of led chip 201.
With reference to Fig. 3, the present invention also comprises fin 204, be provided with louvre 205 in the fin 204, substrate 201 is close on the fin 204, be provided with open-work 206 with louvre 205 corresponding positions on the substrate 201, in the present embodiment, be respectively equipped with three louvres 205 and three open-works 206 on fin 204 and the substrate 201, in addition, corresponding position also can be provided with via hole 207 as required on the film 203, but the via hole 207 on the film 203 generally can only be arranged at marginal position, avoids destroying when being arranged at the middle part of film 203 illuminating effect.Owing to be provided with above-mentioned fin 204, louvre 205 and open-work 206, the heat that sends during blue-light LED chip 202 energisings can be transmitted on the fin 204 by substrate 201, and heat can more promptly outwards distribute by the form of thermal convection current, thereby make blue-light LED chip 202 have better radiating condition, guaranteed the working life of blue chip 202.
Except said structure, the present invention also comprises direct current supply line 208, insulation fixed support 209, AC/DC conversion electric power 210, Alternating Current Power Supply line 211, plastic casing 212, transparent adhesive tape shell 213 and standard screw joint 214, the fixed support 209 that wherein insulate is used for that insulation between AC/DC conversion electric power 210 and the fin 204 is isolated and the two installation has been connected fixation, direct current supply line 208, fin 204, insulation fixed support 209, AC/DC conversion electric power 210, Alternating Current Power Supply line 211 and ray structure all are arranged at by plastic casing 212, in the seal that transparent adhesive tape shell 213 and standard screw joint 214 are formed.
During operate as normal, white light LEDs passes through standard screw joint 214 from extraneous power taking, alternating current enters AC/DC conversion electric power 210 by Alternating Current Power Supply line 211, AC/DC conversion electric power 210 can be converted to the alternating current in the 95V-220V scope direct current of 12V, the 12V direct current is powered to blue-light LED chip 202 by direct current supply line 208 again, the part light that blue-light LED chip 202 sends enters and produces gold-tinted after film 203 excites the yellow fluorescent powder that wherein mixes, the gold-tinted that excites generation and part produce required white light after passing the blue light of film 203, and white light appears from transparent adhesive tape shell 213 and plays a role in lighting.
Above-mentionedly just preferred embodiments more of the present invention are illustrated and describe, but embodiments of the present invention are not restricted to the described embodiments,, all should belong to protection scope of the present invention as long as it reaches technique effect of the present invention with essentially identical means.
Claims (3)
1. white light LEDs comprises substrate (201) and is fixedly installed in blue-light LED chip (202) on the substrate (201), it is characterized in that the top of described blue-light LED chip (202) is provided with the film (203) that is mixed with yellow fluorescent powder.
2. a kind of white light LEDs according to claim 1 is characterized in that also comprising fin (204), and described substrate (201) is close on the fin (204).
3. a kind of white light LEDs according to claim 2 is characterized in that being provided with in the described fin (204) louvre (205), and substrate (201) is gone up and the corresponding position of louvre (205) is provided with open-work (206).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910206126A CN101788109A (en) | 2009-10-09 | 2009-10-09 | White light LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910206126A CN101788109A (en) | 2009-10-09 | 2009-10-09 | White light LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101788109A true CN101788109A (en) | 2010-07-28 |
Family
ID=42531434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910206126A Pending CN101788109A (en) | 2009-10-09 | 2009-10-09 | White light LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101788109A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251422A (en) * | 2014-09-17 | 2014-12-31 | 刘伟 | Adjustable color temperature GU10 LED spotlight |
| CN104380175A (en) * | 2012-06-06 | 2015-02-25 | 欧司朗股份有限公司 | Illuminating device |
| CN104747948A (en) * | 2015-03-25 | 2015-07-01 | 胡振强 | High heat dissipation LED |
| CN111883015A (en) * | 2020-07-28 | 2020-11-03 | 深圳市时代霓虹电子制品有限公司 | Preparation method of light-emitting character of LED yellow-white acrylic panel |
-
2009
- 2009-10-09 CN CN200910206126A patent/CN101788109A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104380175A (en) * | 2012-06-06 | 2015-02-25 | 欧司朗股份有限公司 | Illuminating device |
| CN104380175B (en) * | 2012-06-06 | 2018-05-11 | 欧司朗股份有限公司 | Lighting device |
| CN104251422A (en) * | 2014-09-17 | 2014-12-31 | 刘伟 | Adjustable color temperature GU10 LED spotlight |
| CN104747948A (en) * | 2015-03-25 | 2015-07-01 | 胡振强 | High heat dissipation LED |
| CN111883015A (en) * | 2020-07-28 | 2020-11-03 | 深圳市时代霓虹电子制品有限公司 | Preparation method of light-emitting character of LED yellow-white acrylic panel |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100728 |
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| RJ01 | Rejection of invention patent application after publication |