CN201526823U - White light LED light source and street lamp applying same - Google Patents
White light LED light source and street lamp applying same Download PDFInfo
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- CN201526823U CN201526823U CN2009201672104U CN200920167210U CN201526823U CN 201526823 U CN201526823 U CN 201526823U CN 2009201672104 U CN2009201672104 U CN 2009201672104U CN 200920167210 U CN200920167210 U CN 200920167210U CN 201526823 U CN201526823 U CN 201526823U
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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Abstract
The utility model provides a white light LED light source which contains red, yellow, green and blue LED light sources and realizes color development. The white light LED light source comprises a base plate and a plurality of LED light sources, wherein the LED light sources comprise the red, the yellow, the green and the blue LED light sources, wherein the red LED light source has the wavelength of 634.5-635.5mm, the yellow LED light source has the wavelength of 579.5-580.5nm, the green LED light source has the wavelength of 524.5-525.5nm, and the blue LED light source has the wavelength of 459.5nm-460.5nm. By adopting the white light LED light source, the color development of the white light LED can be greatly improved, the white light is more comfortable and soft, and the white light LED light source has good stability.
Description
Technical field
The utility model belongs to field of semiconductor photoelectron technique, relates to a kind of white light LEDs, especially relates to a kind ofly realizing the white LED light source of high colour developing by comprising red, yellow, green, blue four look LED light emitting sources, and relates to the street lamp of using this white LED light source.
Background technology
In recent years, along with the progress of social enviroment protection consciousness, light emitting diode (Light Emitting Diode; LED) because its plurality of advantages, as low-tension supply, power consumption less, strong, the stability height of applicability, environmentally safe etc., obtained increasingly extensive application.Wherein, the LED illumination is the emphasis application market of LED.As important white-light illuminating technology in the LED illumination, white light LEDs is generally realized by two kinds of methods.A kind of method is to coat YAG fluorescent material to realize white light on blue chip, but because fluorescent material precipitates easily, cause being difficult to effectively controlling colour temperature, make that the color of the white light pipe after encapsulating is soft inadequately, colour rendering is bad, colour rendering index low (usually between 50-80) is difficult to satisfy people's requirement; Fluorescent material light decay speed is fast in addition, makes can't obtain the white light LEDs lost of life stable light and export and keep higher device lifetime, is difficult to satisfy the long-life needs of people to light source.Another kind method is that red by adopting, blue, green three-color LED light emitting source carries out mixed light and realizes white light LEDs, though the LED lamp of this structure does not need fluorescent material, still has the colour rendering defect of bad.
The utility model content
The utility model proposes in order to solve the existing requirement that is difficult to adapt to high colour developing illumination of above-mentioned existing white light LEDs, provides a kind of and realizes the white LED light source of high colour developing by comprising red, yellow, green, blue four look LED light emitting sources.
The white LED light source that the utility model provides adopts following technical solution:
According to one side of the present utility model, a kind of white LED light source is provided, comprising: substrate, a plurality of
According to one side of the present utility model, a kind of white LED light source is provided, comprise: substrate, a plurality of LED light emitting sources, it is characterized in that: described a plurality of LED light emitting sources comprise the LED light emitting source of four kinds of colors of red, yellow, green, blue, the emission wavelength of described red-light LED light emitting source is 634.5nm-635.5nm, the emission wavelength of described yellow light LED light emitting source is 579.5nm-580.5nm, the emission wavelength of described green light LED light emitting source is 524.5nm-525.5nm, and the emission wavelength of described blue-ray LED light emitting source is 459.5nm-460.5nm.
In addition, preferred construction is that the quantity of the LED light emitting source of described four kinds of colors is identical.
In addition, preferred construction is that the quantity of four kinds of color LED of described red, yellow, green, blue light emitting source is respectively 8.
In addition, preferred construction is that described a plurality of LED light emitting sources are installed in surface attachment by eutectic to be had on the metal substrate of high heat conductive insulating layer.
In addition, preferred structure is that described high heat conductive insulating layer is a membrane structure.
Moreover preferred construction is that described high heat conductive insulating layer is an aluminium nitride film.
The principal character of white LED light source of the present utility model is to have added yellow led light emitting source mixed light on the basis of red, blue, green three-color LED light emitting source.By adding suitable current to led chip, adjust the ratio of each coloured light, utilize the yellow light LED source of rising to remedy the defective of each coloured light, make the white light of four mixture of colours more approach sunshine.
According to the structure of aforesaid white LED light source of the present utility model, improved the colour rendering of white light LEDs greatly, colour rendering index can reach 98, makes white light more comfortable soft, and has good stability.
According to another aspect of the present utility model, a kind of street lamp is provided, comprise aforesaid white LED light source in this street lamp.
In addition, described street lamp preferred construction is, also comprises heat-pipe radiator, and a plurality of white LED light sources are installed on described heat-pipe radiator.
Description of drawings
Fig. 1 is the distribution schematic diagram according to the LED light emitting source on the metal substrate of the white LED light source of first embodiment of the present utility model.
Fig. 2 is the schematic diagram according to the white LED light source of first embodiment of the present utility model.
Fig. 3 is the local enlarged diagram at A place among Fig. 2.
Fig. 4 is the application schematic diagram of white LED light source of the present utility model in street lamp.
Fig. 5 is that the another kind of white LED light source of the present utility model in street lamp used schematic diagram.
Description of reference numerals is as follows:
1, metal substrate
2, aluminium nitride film
3, electrode wires
3a, positive pole
4, LED light emitting source
4a, red-light LED light emitting source
4b, yellow light LED light emitting source
4c, green light LED light emitting source
4d, blue-ray LED light emitting source
5, silica gel
6, resistance
10, white LED light source
11, heat-pipe radiator
12, street lamp installing ring
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, preferred forms of the present utility model is described in further detail below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, a kind of white LED light source 10 of the present utility model comprises: metal substrate 1; Aluminium nitride film 2 forms on metal substrate 1 upper surface; A plurality of LED light emitting sources 4 are arranged on the aluminium nitride film 2.In the present embodiment, be provided with 32 LED light emitting sources 4.Wherein, aluminium nitride film 2 is a smooth flat.32 LED light emitting sources comprise: 8 one watt red-light LED light emitting source 4a, 8 one watt yellow light LED light emitting source 4b, 8 one watt of green light LED light emitting source 4c and 8 one watt blue-ray LED light emitting source 4d.The rise connected mode of light source of 32 LED is: the electrode of 32 LED light emitting sources is drawn by the side and is welded to connect with the both positive and negative polarity of power supply, the resistance 6 of connecting again after 8 one watt red-light LED light emitting source 4a series connection, the resistance 6 of connecting again after 8 one watt yellow light LED light emitting source 4b series connection, the resistance 6 of connecting again after 6,8 one watt blue-ray LED light emitting source 4d series connection of a resistance of connecting again after 8 one watt green light LED light emitting source 4c series connection.
In addition, electrode 3, resistance 6 also are installed, also are useful on top and the silica gel all around 5 of sealing 32 LED light emitting sources 4 and resistance 6 in the inside of this metal substrate 1.The common practise that these all belong to the present technique field is not described in detail at this.
The metal substrate of present embodiment can be made by thermal conductive metallic materials such as copper or aluminium.
The quantity of the LED light emitting source of red, blue, green, the Huang Si kind color of present embodiment is 8, and still, in other embodiment of the present utility model, the quantity of LED light emitting source of all kinds also can be 4,1 or other equal number.In addition, with each color LED light emitting source in the present embodiment on substrate, be connected into respectively one row different, they also can adopt different connected modes.The power of above-mentioned LED light emitting source of all kinds also reaches the resistance value of resistance and also can adjust according to different needs.
In addition, the aluminium nitride film that on metal substrate, forms in the present embodiment with respect in the prior art with the structure of pcb board as insulating barrier, reduced thermal resistance greatly.Certainly, the membrane structure that also can adopt other highly heat-conductive material to form.Perhaps, in other embodiment of the present utility model, also can not adopt membrane structure and the LED light emitting source directly is set on metal substrate, but can reduce the heat dispersion of white LED light source of the present utility model like this.
In addition, in white LED light source of the present utility model, the preferred 634.5nm-635.5nm of emission wavelength scope of red-light LED light emitting source, the preferred 579.5nm-580.5nm of emission wavelength scope of yellow light LED light emitting source, the preferred 524.5nm-525.5nm of emission wavelength scope of green light LED light emitting source, the preferred 459.5nm-460.5nm of emission wavelength scope of blue-ray LED light emitting source, thus reach best color developing effect.
In sum, have the following advantages according to white LED light source of the present utility model: because red, blue, add the yellow led light emitting source on the basis of green three-color LED light emitting source and carried out mixed light, and by adding suitable current to led chip, adjust the ratio of each coloured light, it is red to utilize gold-tinted to replenish, green, the defective of blue light, make the white light of four mixture of colours more approach sunshine, improved colour rendering, colour rendering index can reach 98, make white light more comfortable soft, thereby solved existing by red, blue, green three-color LED light emitting source carries out the problem of the colour rendering difference of the white LED light source that mixed light realizes.
Preparation method according to the white LED light source of the foregoing description of the present utility model will be described below.
At first, form the aluminium nitride film 2 of 32 1mm*1mm at thick metal substrate 1 (20mm*10mm) upper surface of 1mm.
Then, on aluminium nitride film 2, plate the gold that thickness is 5 μ m, with eutectic stove 8 one watt red-light LED light emitting source 4a (7000-7500mcd), 8 one watt yellow light LED light emitting source 4b (7000-7500mcd), 8 one watt green light LED light emitting source 4c (100-125w) and 8 one watt blue-ray LED light emitting source 4d (100-125w) on difference eutectic on the aluminium nitride film 2, the bottom surface that above-mentioned 32 one watt of LED light emitting sources combine with aluminium nitride film 2 is a smooth flat, and the electrode of above-mentioned 32 one watt of LED light emitting sources is drawn by the side and is connected with the welding electrode line.
After above-mentioned 32 one watt LED light emitting source eutectic weldering is finished, go up spun gold with dull and stereotyped welding machine welding, guarantee to go here and there again after 8 red-light LED light emitting source 4a series connection to go here and there again after the resistance in one one Europe, 8 the yellow light LED light emitting source 4b series connection to go here and there again after the resistance in one one Europe, 8 the green light LED light emitting source 4c series connection and go here and there the resistance in one one Europe after the resistance in one one Europe, 8 the blue-ray LED light emitting source 4d series connection again, the shared positive pole of red, yellow, green, blue LED light emitting source.
At last, above a plurality of LED light emitting sources, coat and seal silica gel 5, thereby make high-color rendering (colour rendering index 98) white LED light source.
Adopted the eutectic weldering that each LED light emitting source is installed on the metal substrate according to above-mentioned embodiment of the present utility model, improved the integrated structure of LED light emitting source, aluminium nitride film and metal substrate, therefore greatly reduce the thermal resistance after entire product encapsulates, improved the integral heat sink performance.In other embodiment of the present utility model, also can adopt other metal except that gold to carry out the eutectic weldering so that each LED light emitting source is installed on the metal substrate.
Described above white LED light source and manufacture method thereof according to most preferred embodiment of the present utility model.The street lamp that includes above-mentioned white LED light source is described below in conjunction with accompanying drawing.
Fig. 4 is the structural representation that expression includes the street lamp that first embodiment of white LED light source of the present utility model relates to.As shown in Figure 4, street lamp comprises heat-pipe radiator 11, street lamp installing ring 12 and is installed in a plurality of white LED light sources 10 on the heat-pipe radiator 11, because this white LED light source has good colour rendering, therefore, the colour rendering of street lamp is improved, and whole good heat dissipation effect can large batch ofly be applied in the market.
Fig. 5 is the structural representation that expression includes the street lamp that second embodiment of white LED light source of the present utility model relates to.The street lamp that street lamp shown in Figure 5 is compared among Fig. 4 has been made further improvement, and directly as heat-pipe radiator 11, the installation base plate and the heat-pipe radiator of LED light emitting source are structure as a whole with metal substrate 1, thereby has further improved the radiating effect of street lamp.
Though described the principle of the present utility model and the specific embodiment at structure, its manufacture method of white LED light source and the street lamp of using this white LED light source above; but; under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of above-mentioned embodiment, and these improvement or distortion drop in the protection domain of the present utility model.It will be understood by those skilled in the art that top specific descriptions just in order to explain the purpose of this utility model, are not to be used to limit the utility model.Protection domain of the present utility model is limited by claim and equivalent thereof.
Claims (8)
1. white LED light source, comprise: substrate, a plurality of LED light emitting sources, it is characterized in that: described LED light emitting source comprises the LED light emitting source of four kinds of colors of red, yellow, green, blue, the emission wavelength of described red-light LED light emitting source is 634.5nm-635.5nm, the emission wavelength of described yellow light LED light emitting source is 579.5nm-580.5nm, and the emission wavelength of described green light LED light emitting source is 524.5nm-525.5nm, and the emission wavelength of described blue-ray LED light emitting source is 459.5nm-460.5nm.
2. white LED light source as claimed in claim 1 is characterized in that: the quantity of described four kinds of color LED light emitting sources is identical.
3. white LED light source as claimed in claim 2 is characterized in that: the quantity of four kinds of color LED of described red, yellow, green, blue light emitting source is respectively 8.
4. white LED light source as claimed in claim 1 is characterized in that: described a plurality of LED light emitting sources are installed in surface attachment by eutectic to be had on the metal substrate of high heat conductive insulating layer.
5. white LED light source as claimed in claim 4 is characterized in that: described high heat conductive insulating layer is a membrane structure.
6. white LED light source as claimed in claim 5 is characterized in that: described high heat conductive insulating layer is an aluminium nitride film.
7. street lamp, it is characterized in that: described street lamp comprises as claim 1 to the arbitrary described white LED light source of claim 6.
8. street lamp as claimed in claim 7 is characterized in that: also comprise heat-pipe radiator, a plurality of white LED light sources are installed on described heat-pipe radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201672104U CN201526823U (en) | 2009-07-31 | 2009-07-31 | White light LED light source and street lamp applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201672104U CN201526823U (en) | 2009-07-31 | 2009-07-31 | White light LED light source and street lamp applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526823U true CN201526823U (en) | 2010-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201672104U Expired - Fee Related CN201526823U (en) | 2009-07-31 | 2009-07-31 | White light LED light source and street lamp applying same |
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| Country | Link |
|---|---|
| CN (1) | CN201526823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915390A (en) * | 2010-07-27 | 2010-12-15 | 东莞市环宇激光工程有限公司 | Red, green, blue and yellow four-color laser lamp |
| CN101988637A (en) * | 2009-07-31 | 2011-03-23 | 歌尔声学股份有限公司 | White-light light-emitting diode (LED) light sourceS, manufacturing method thereof and street lamp using white-light LED sources |
-
2009
- 2009-07-31 CN CN2009201672104U patent/CN201526823U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988637A (en) * | 2009-07-31 | 2011-03-23 | 歌尔声学股份有限公司 | White-light light-emitting diode (LED) light sourceS, manufacturing method thereof and street lamp using white-light LED sources |
| CN101915390A (en) * | 2010-07-27 | 2010-12-15 | 东莞市环宇激光工程有限公司 | Red, green, blue and yellow four-color laser lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20140731 |
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| EXPY | Termination of patent right or utility model |