CN2646554Y - Illuminator of white light LED lamp - Google Patents
Illuminator of white light LED lamp Download PDFInfo
- Publication number
- CN2646554Y CN2646554Y CNU2003201009091U CN200320100909U CN2646554Y CN 2646554 Y CN2646554 Y CN 2646554Y CN U2003201009091 U CNU2003201009091 U CN U2003201009091U CN 200320100909 U CN200320100909 U CN 200320100909U CN 2646554 Y CN2646554 Y CN 2646554Y
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- CN
- China
- Prior art keywords
- light
- emitting diode
- reflector
- light emitting
- blue
- 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.)
- Expired - Lifetime
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Classifications
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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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/06—Optical design with parabolic curvature
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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
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
- F21V7/30—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
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- 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]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Led Device Packages (AREA)
Abstract
The utility model relates to a shining device of white light LED lamps and lanterns, which comprises a component(9), a plurality of LEDs(10, 11) arranged on the component, a reverberator(6) which has a paraboloidal shape and has the component and the plurality of LEDs in, a yellow fluorescent coating(8) which is coated on the reverberator and faces to the plurality of LEDs, a strutting piece(7) which connects the component and the reverberator and further combines the LEDs, the component and the reverberator together. When the blue light emitted by the LEDs under a proper consequent voltage bias combines with the yellow light emitted by the yellow(phosphorus) fluorescent coating which is coated on the inner surface of the reverberator upon the irradiation of the blue light and an irradiation triggering and further produces white light, the reverberator reflects the combined white light on the lighting surface to lighten the desired illuminating objects.
Description
Technical field
The utility model relates to a kind of light-emitting device of white led lamp tool, and particularly relating to the gallium nitride is the light-emitting device of the made white led lamp tool of the light emitting diode of material.
Background technology
In recent years, owing to scientific and technological each side fast development is advanced by leaps and bounds, thereby produce the high-tech product of many Xiang Xin, light emitting diode is wherein one of important invention.
As everyone knows, so-called light emitting diode (LED:Light-Emitting Diode) is located for a kind of P/N knot (PNjunction) that utilizes at semi-conducting material, at the device that can produce visible light when it is applied forward bias voltage drop.In recent years these with multiple products of light emitting diode manufacturing assembling, since its have consumed energy few, produce that heat is little, stable luminescent property is excellent, long service life and can save characteristics such as manufacturing and use cost, thereby, be widely used at industrial and commercial circles.For example: the advertisement plate (billboard) that is used to show purposes, this is the basic composition assembly by the luminous substantially Red Green Blue that the present light emitting diode that uses of utilization has, be configured to the array of different shape, but constitute the picture of the variation dynamic change flexible, that vividly enliven in the advertisement plate via its luminous demonstration; Be used to indicate the indicating lamp device of purposes, its owing to stable luminescent property, service life time limit long enough be used to replace traditional small-sized demonstration bulb, and be installed in the display floater of various machinery equipments or device, to show this machinery equipment or the present residing state of device relevant portion, for example: conducting, cut-out, time-out and await orders etc., and can indicate selectable step of institute or action in response to these states; The various forms of lamp devices that are used for lighting use, because light emitting diode institute consumed energy is few, produce little, the stable luminescent property of heat, and can replace conventional bulb and make various lightings, for example comprise: fluorescent lamp, automobile are with headlight, flashlight and bicycle headlight etc.; And can be used in the light source of using as high-tech network fiber signal post in addition, for example comprise: in the communication of the LAN (LAN) of internet, the light that this light emitting diode is launched is as light source, end in this optical fiber enters the light emission that this light emitting diode sent in the widely used at present multi-mode optical fiber, to form the carrier of carrying institute tendency to develop carry information.
In the various application of the above light emitting diode, all confirm and show that the performance of its performance is very stable excellent, but wherein still have problem wait to solve improve perfect to attain.These problems for example comprise: using in the application of light emitting diode as lighting use at present, because the color of the light that light emitting diode itself is launched respectively is three kinds of primary colors of red, green, blue with the kind difference, in the occasion of using white-light illuminating, need the light emitting diode of these three kinds of colors of emission is suitably made up allotment, to produce white light through mixing.Yet relevant at present technical level is not in this respect attained perfect yet, and therefore the uniformity of the white light mixed light that is produced is not good, and has the phenomenon that the veiling glare beyond the white light is sneaked into, so that influence illuminating effect.
The manufacture method of usually general white light emitting diode can be divided into three kinds.First kind is red light-emitting diode, green light LED and blue light-emitting diode to be mixed use.Second method is to use yellow substrate, the made substrate of for example zinc selenide (ZnSe), the blue light-emitting diode of on yellow substrate, growing up then, and therefore, the last only gold-tinted that sends adds blue light, i.e. white light.The third method is coating one deck yellow fluorescent powder on blue light-emitting diode, and its last luminous color also is a white light.But this second kind with the used light emitting diode of the third method because the less and flexible application of volume, so be the main flow of existing market.Especially the third method, owing to be to adopt gallium nitride based material, so its life-span is long than the white light emitting diode of zinc selenide substrate.Yet even so, the service life of gallium nitride white light emitting diode can be because of the heat that light emitting diode produced, feasible coating yellow fluorescent powder deterioration thereon, and cause whole assembly property to comprise that colourity and brightness are also along with deterioration.
Fig. 1 is the made bell-jar 1 of epoxy resin (Epoxy) of the light-emitting device of known technology traditional type white led lamp tool, is optically focused and guard assembly, and its purpose prevents that for the light emitting diode 3 that protection is contained in wherein it is subjected to the external force injury.Yellow phosphor coating 2 is to be coated on the wafer that is installed in the cup-shaped receptacle.The required power supply of this light emitting diode is supplied to electrode 5 by electric wire via lead frame 4, and when the electric power conducting, drives light emitting diode and sends it and be designed the light that sent.This bell-jar also act as convex lens, and its light that this light emitting diode is produced transmits to the dead ahead.
Yet the hybrid mode white light of this kind design often has the bad phenomenon of even light mixing, and can produce outer yellow interior blue light beam.Because the manufacture of this kind traditional type led lamp is that yellow fluorescent powder directly is coated on the blue light-emitting diode, therefore the mixed light white light that is produced has the bad phenomenon of even light mixing.And the heat that blue light-emitting diode is produced when operation can make the yellow fluorescent powder deterioration, and shorten and the luminescent quality deterioration service life.This is the shortcoming and the restriction of the light-emitting device of known technology white led lamp tool.
Summary of the invention
The purpose of this utility model is to provide a kind of light-emitting device of white led lamp tool, its use is different from the reflective coating method of the light emitting diode of traditional type white led lamp tool, therefore the uniformity of the white light mixed light that the utility model produced is preferable, can not produce the phenomenon of outer yellow interior blue beam, as the phenomenon that light-emitting device produced of traditional led lamp.
For achieving the above object, the utility model provides a kind of light-emitting device of white led lamp tool, comprising: member; A plurality of light emitting diodes that are installed on this member; Reflector, it is the parabolic shape structure, wherein comprises to be provided with this member and a plurality of light emitting diode; Be coated on the yellow phosphor coating of this reflector on the inner surface of above-mentioned a plurality of light emitting diodes, this yellow phosphor coating is excited by the blue light illumination of this light emitting diode emission and produces gold-tinted, and produce white light with this blue light, this reflector should composite white light reflection to illuminating face; And support member, it connects this member and reflector, and light emitting diode, member and reflector are combined into one.
That is to say that the light-emitting device of the white led lamp tool that the utility model provides comprises: member; A plurality of gallium nitride (GaN) blue light-emitting diodes that are installed on this member; Reflector, it is the parabolic shape structure, and this member and a plurality of light emitting diode are contained in wherein; Coat the yellow powder coating of this reflector on the inner surface of above-mentioned a plurality of light emitting diodes; And support member, it connects this member and reflector, and light emitting diode, member and reflector are combined into one; When above-mentioned light emitting diode is subjected to blue light that suitable forward bias voltage drop launches, produces white light with yellow (phosphorus) fluorescent material of coating through this blue light illumination on the reflector inner surface because of exposure excites the gold-tinted that is produced to mix, then this reflector with this composite white light reflection to illuminating face, and with the object desiring to illuminate illuminate.
Adopted reflective coating method in the light-emitting device of the white led lamp tool that the utility model proposes, can increase the service life of the light-emitting device of this light fixture on the one hand, can reduce cost on the other hand, and the more important thing is, can reach the splendid uniformity of mixed white light, and can not produce the situation that produces outer yellow interior blue beam as the light-emitting device of conventional well known technology white led lamp tool.
The reflective coating method of this kind is different with traditional coating method, it directly is not coated on yellow fluorescent powder on the blue light-emitting diode, but, yellow fluorescent powder is coated on the reflector, or yellow fluorescent powder coated on the transparent membrane and with this transparent membrane attachment invest on the reflector.So, when these light emitting diodes are subjected to blue light that suitable forward bias voltage drop launches, produce white light with yellow (phosphorus) fluorescent material of coating through this blue light illumination on the reflector inner surface because of exposure excites the gold-tinted that produces to mix, then this reflector with this composite white light reflection to illuminating face, and with the object desiring to illuminate illuminate.Because this method directly is not coated on yellow fluorescent powder on the blue light-emitting diode as the conventional known method, so can often not use heating because of blue light-emitting diode, and making setting yellow fluorescent powder thereon produce the phenomenon of deterioration, this has much the feature of intention for the utility model.
Every characteristics of the present utility model and advantage will be by following detailed descriptions about preferred embodiment, and obtain to understand more with reference to described accompanying drawing.
Description of drawings
Fig. 1 is the generalized section of the structure of conventional white light light-emitting device that light emitting diode constitutes;
Fig. 2 is the profile according to the luminous device structure of the white led lamp tool of the utility model first embodiment;
Fig. 3 is the profile according to the luminous device structure of the white led lamp tool of the utility model second embodiment;
Fig. 4 is the profile according to the luminous device structure of the white led lamp tool of the utility model the 3rd embodiment;
Fig. 5 is the structural representation according to another alternate embodiment of the utility model embodiment, and its transparent membrane attachment that will be coated with yellow fluorescent powder is attached on the blue LGP;
Fig. 6 is according to the comparison diagram of the employed blue-ray LED of the utility model embodiment to the attenuation ratio of white light LEDs.
Wherein, description of reference numerals is as follows:
1-bell-jar; 2-yellow phosphor coating; 3-light emitting diode; 4-lead frame;
5-electrode; 6-reflector; 7-support member; 8-yellow phosphor coating;
9-member; 10-light emitting diode (gallium nitride blue light-emitting diode);
11-light emitting diode (gallium nitride blue light-emitting diode+gallium nitride green light LED+gallium aluminium arsenic red light-emitting diode);
12-diaphragm; 13-LGP; 14-diaphragm; 15-light emitting diode;
16-yellow phosphor coating.
The specific embodiment
Now with reference to the accompanying drawings with following detailed description, embodiment of the present utility model is described.
Fig. 2 is extremely shown in Figure 4 to be first to the 3rd embodiment of the present utility model.
Please refer to Fig. 2, it shows the generalized section according to the light-emitting device of the white led lamp tool of the utility model first embodiment made.Wherein the structure of this part is supported by support member 7, and it is combined as a whole reflector 6 and member 9 and light emitting diode 10.As shown in the figure, these light emitting diodes are to be fixedly set on this member 9, and yellow phosphor coating 8 is to coat on the reflector 6.The mode of its coating for example can adopt: spin coating (spin-coating), sputter (sputtering), printing (printing) or other similar mode, promptly yellow phosphor coating is spin coat, sputter coating or printed coating on this reflector.Employed in the present embodiment light emitting diode is gallium nitride blue light-emitting diode (GaN blue LED).As shown in the figure, the blue light of launching by this light emitting diode, because of exciting the gold-tinted that is produced to mix, exposure produces white light with the yellow fluorescent powder that is coated on the reflector inner surface through this blue light illumination, then by this reflector with this composite white light reflection as for illuminating face, and reach the purpose that the desire illuminating objects is illuminated.
The utility model uses distinctive above-mentioned reflective coating method different with the design of the light-emitting device of conventional diode white led lamp tool white light light fixture.Traditional approach be light direct irradiation that light emitting diode is launched to the object of institute's desire irradiation, so its even light mixing is relatively poor, the mixed light bad phenomenon of blue beam in regular meeting produces for example outer Huang.Yet the utility model adopts reflective coating method, and white light mixed light that this produced after mixed light, at the face of illuminating that reflexes to via reflector, can be removed the uneven phenomenon of mixed light effectively.
Fig. 3 is the generalized section according to the light-emitting device of the white led lamp tool of the utility model second embodiment, wherein most of form assembly all with first embodiment shown in Fig. 2 in employed identical.Different is that the light emitting diode 11 in this example is to use gallium nitride blue light-emitting diode, gallium nitride green light LED and gallium aluminium arsenic red light-emitting diode to combine.
Fig. 4 is the generalized section according to the light-emitting device of the white led lamp tool of the utility model the 3rd embodiment, itself and the foregoing description one are similar, different is: embodiment one is coated on the reflector yellow fluorescent powder to form coating, and be that yellow fluorescent powder is separated with reflector in present embodiment three, it is coated on a transparent membrane or the film 12.Then, this transparent membrane or film attachment are invested on the reflector, and reach with Fig. 2 and Fig. 3 in first and second embodiment similar effects.
Fig. 5 is attached on the blue LGP 13 for showing the transparent membrane that will be coated with yellow phosphor coating 16 14 attachment according to the utility model embodiment.This kind design quilt that life-span service life is short swashs (sending out) light object and the long separately and not directly contact of light emitting source (that is, light emitting diode 15) of life-span service life.Therefore, the former decay and loss can not influence the latter's life-span service life.This is a variation pattern of the reflective coating method of the utility model employing.
Fig. 6 shows according to the comparison diagram of the employed blue-ray LED of the utility model embodiment to the attenuation ratio of white light LEDs.The rate of decay that wherein clearly shows blue light-emitting diode than the rate of decay of white light emitting diode for slow.This relatively is by the electric current of 20mA and carry out the result that obtained under room temperature (RT:Room Temperature) with these two kinds of light emitting diodes.
Another favourable advantage of the present utility model is, the structure of the light-emitting device of the white led lamp tool of the application's case is designed to modularization: one of them damages reflector, light emitting diode, yellow phosphor coating or consumes if having, it distinctly can be replenished or changes, and can not have influence on other assembly.
Obviously can do various corrections and variation to above embodiment not departing under the preceding topic of spirit of the present utility model and scope for the personage who knows this technology.Therefore, various correction of the present utility model and the variation of providing in the scope that is contained in appended claim and equivalent thereof is provided usefulness of the present utility model.
Claims (5)
1, a kind of light-emitting device of white led lamp tool is characterized in that comprising:
Member (9);
A plurality of light emitting diodes (10,11) that are installed on this member;
Reflector (6), it is the parabolic shape structure, wherein comprises to be provided with this member and a plurality of light emitting diode;
Be coated on the yellow phosphor coating (8) of this reflector on the inner surface of above-mentioned a plurality of light emitting diodes, this yellow phosphor coating is excited by the blue light illumination of this light emitting diode emission and produces gold-tinted, and produce white light with this blue light, this reflector should composite white light reflection to illuminating face; And
Support member (7), it connects this member and reflector, and light emitting diode, member and reflector are combined into one.
2, light-emitting device as claimed in claim 1 is characterized in that described light emitting diode is the gallium nitride blue light-emitting diode.
3, light-emitting device as claimed in claim 1 is characterized in that described light emitting diode is to be combined by gallium nitride blue light-emitting diode, gallium nitride green light LED and gallium aluminium arsenic red light-emitting diode.
4, light-emitting device as claimed in claim 1 it is characterized in that this yellow phosphor coating is to coat on the transparent membrane, but and attachment invests on the reflector.
5, light-emitting device as claimed in claim 1 is characterized in that yellow phosphor coating is spin coat, sputter coating or printed coating on this reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201009091U CN2646554Y (en) | 2003-10-13 | 2003-10-13 | Illuminator of white light LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201009091U CN2646554Y (en) | 2003-10-13 | 2003-10-13 | Illuminator of white light LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646554Y true CN2646554Y (en) | 2004-10-06 |
Family
ID=34304927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201009091U Expired - Lifetime CN2646554Y (en) | 2003-10-13 | 2003-10-13 | Illuminator of white light LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646554Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409462C (en) * | 2005-05-26 | 2008-08-06 | 陈隆建 | Reflection white-light LED excited by fluorescent powder |
| US7588339B2 (en) | 2004-11-01 | 2009-09-15 | Nikon Corporation | Light emitting device |
| WO2010045763A1 (en) * | 2008-10-23 | 2010-04-29 | 深圳市中电开拓实业有限公司 | Light collimating device |
| CN102130233A (en) * | 2010-12-30 | 2011-07-20 | 东莞高埗佰鸿电子厂 | Method for spraying fluorescent powder on LED (light-emitting diode) reflection cup |
| CN102563483A (en) * | 2010-10-29 | 2012-07-11 | 夏普株式会社 | Light emitting device, vehicle headlamp, illumination device, and laser element |
| CN102884369A (en) * | 2010-02-17 | 2013-01-16 | Next照明公司 | Lighting unit having lighting strips with light emitting elements and a remote luminescent material |
| CN102084172B (en) * | 2008-07-07 | 2013-07-24 | 奥斯兰姆有限公司 | Radiation-emitting apparatus |
| CN103883955A (en) * | 2012-12-22 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | LED automobile lamp |
| CN105650561A (en) * | 2014-09-26 | 2016-06-08 | 现代自动车株式会社 | Laser optical system for head lamp |
| CN105702840A (en) * | 2016-03-29 | 2016-06-22 | 佛山市中昊光电科技有限公司 | Light emitting diode (LED) light source based on remote fluorescent powder technique |
| CN108257948A (en) * | 2017-12-29 | 2018-07-06 | 广东晶科电子股份有限公司 | White light emitting diode and backlight module |
| CN108317478A (en) * | 2016-01-08 | 2018-07-24 | 扬州艾笛森光电有限公司 | Light-emitting device |
| US10948135B2 (en) | 2013-10-28 | 2021-03-16 | Next Lighting Corp. | Linear lighting apparatus |
-
2003
- 2003-10-13 CN CNU2003201009091U patent/CN2646554Y/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7588339B2 (en) | 2004-11-01 | 2009-09-15 | Nikon Corporation | Light emitting device |
| CN1993580B (en) * | 2004-11-01 | 2010-09-29 | 株式会社尼康 | Light emitting device |
| CN100409462C (en) * | 2005-05-26 | 2008-08-06 | 陈隆建 | Reflection white-light LED excited by fluorescent powder |
| CN102084172B (en) * | 2008-07-07 | 2013-07-24 | 奥斯兰姆有限公司 | Radiation-emitting apparatus |
| WO2010045763A1 (en) * | 2008-10-23 | 2010-04-29 | 深圳市中电开拓实业有限公司 | Light collimating device |
| CN102884369A (en) * | 2010-02-17 | 2013-01-16 | Next照明公司 | Lighting unit having lighting strips with light emitting elements and a remote luminescent material |
| CN102563483A (en) * | 2010-10-29 | 2012-07-11 | 夏普株式会社 | Light emitting device, vehicle headlamp, illumination device, and laser element |
| CN102130233A (en) * | 2010-12-30 | 2011-07-20 | 东莞高埗佰鸿电子厂 | Method for spraying fluorescent powder on LED (light-emitting diode) reflection cup |
| CN103883955A (en) * | 2012-12-22 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | LED automobile lamp |
| US10948135B2 (en) | 2013-10-28 | 2021-03-16 | Next Lighting Corp. | Linear lighting apparatus |
| CN105650561A (en) * | 2014-09-26 | 2016-06-08 | 现代自动车株式会社 | Laser optical system for head lamp |
| CN108317478A (en) * | 2016-01-08 | 2018-07-24 | 扬州艾笛森光电有限公司 | Light-emitting device |
| CN105702840A (en) * | 2016-03-29 | 2016-06-22 | 佛山市中昊光电科技有限公司 | Light emitting diode (LED) light source based on remote fluorescent powder technique |
| CN105702840B (en) * | 2016-03-29 | 2019-02-12 | 佛山市中昊光电科技有限公司 | A kind of LED light source based on long-distance fluorescent powder technology |
| CN108257948A (en) * | 2017-12-29 | 2018-07-06 | 广东晶科电子股份有限公司 | White light emitting diode and backlight module |
| CN108257948B (en) * | 2017-12-29 | 2024-03-26 | 广东晶科电子股份有限公司 | White light LED and backlight module |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091016 Address after: Taoyuan County, Taiwan province: Co-patentee after: LUMENS Limited by Share Ltd Patentee after: Bright circle Au Optronics Co Address before: Taoyuan County, Taiwan province: Patentee before: Formosa Epitaxy Incorporation |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131013 Granted publication date: 20041006 |