CN103500789B - Improve the method and LED light emission device of LED light emission device fluorescent material utilization rate - Google Patents
Improve the method and LED light emission device of LED light emission device fluorescent material utilization rate Download PDFInfo
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- CN103500789B CN103500789B CN201310460573.8A CN201310460573A CN103500789B CN 103500789 B CN103500789 B CN 103500789B CN 201310460573 A CN201310460573 A CN 201310460573A CN 103500789 B CN103500789 B CN 103500789B
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- 239000000463 material Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 94
- 230000003287 optical effect Effects 0.000 claims abstract description 53
- 230000008859 change Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007739 conversion coating Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
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Abstract
The present invention discloses a kind of method for improving LED light emission device fluorescent material utilization rate, comprises the following steps：S01, the short wavelength light in LED light emission device setting LED/light source, being provided for launching LED/light source are converted into the fluorescence conversion layer of long wavelength's light；S02, the first optical facilities are set in LED light emission device, the light for LED/light source to be launched is oriented to the fluorescence conversion layer, obtains the first mixing light；S03, the second optical facilities are set in LED light emission device, described first mixing light is oriented to the fluorescence conversion layer, at least light of the part not by fluorescence conversion layer conversion in light is mixed by described first and be converted into long wavelength's light, obtain the second mixing light；... S0N, the setting optical facilities of N 1, the N 2 is mixed into light and is oriented to the fluorescence conversion layer, the mixing light of N 1 is obtained（N >=3, N is integer）.The present invention can improve the utilization rate of fluorescent material, and the consumption of fluorescent material can also be saved by not changing colour temperature, reduce the cost of manufacture of LED light emission device.
Description
Technical field
Sent out the present invention relates to the technical field for improving LED light emission device fluorescent material utilization rate, more particularly to a kind of LED that improves
The method and LED light emission device of electro-optical device fluorescent material utilization rate.
Background technology
In recent years, the application of LED illumination technology is more and more extensive.In LED light emission device such as LED lamp, LED chip table
Face is coated with fluorescent material, and this can influence the radiating of LED chip, shortens the life-span of LED chip, and light fixture outgoing light homogeneity is not
It is high.In order to solve these problems, it is thus proposed that the technical scheme of long-range paint-on technique, i.e. remote excitation fluorescent material, specifically
It is that fluorescent material is not coated by LED chip surface, but fluorescence transition material is placed at light fixture opening, shortwave light source is placed in diaphragm
Afterwards, LED/light source transmitting blue light, blue light passes through after phosphor powder layer, and some blue light excitated fluorescent powder obtains gold-tinted, final light fixture hair
The mixed light of gold-tinted for projecting the blue light do not changed and being obtained after being changed, i.e. white light.At present, this remote excitation scheme has been
Through the marketization, the company such as Philip has begun to manufacture light fixture using this scheme.
But, there is inferior position in this market-oriented remote excitation technology：Due to traditional remote excitation fluorescent material
Conversion efficiency is not high, light fixture is launched the preferable mixed light of effect with the fluorescent material more than comparison, and due to fluorescent material
Price it is higher, so the fluorescent powder coating area of traditional remote excitation fluorescent material is big, fluorescent material consumption is more so that use this
The product cost of the technology of kind is high, is unfavorable for marketing.
As can be seen here, how this remote excitation technology of the prior art is improved and improves LED there is provided one kind
The method of the fluorescent material utilization rates of light-emitting device such as tool, makes the fluorescent powder coating in the LED lamp with remote excitation fluorescent material
Area is small, and fluorescent material utilization rate is high, and this is the current technical issues that need to address in this area.
The content of the invention
In view of this, it is an object of the invention to provide a kind of method for improving LED light emission device fluorescent material utilization rate, carry
The fluorescent material utilization rate of high fluorescence conversion layer, makes the fluorescent material consumption in the LED light emission device with remote excitation fluorescent material small,
Reach cost-effective purpose.Based on this, the present invention also improves a kind of LED light emission device for improving fluorescent material utilization rate.
To solve above technical problem, the technical scheme is that：
A kind of method for improving LED light emission device fluorescent material utilization rate, comprises the following steps：
S01, in LED light emission device set transmitting short wavelength light LED/light source, be provided for by short wavelength light turn
Change the fluorescence conversion layer of long wavelength's light into；
S02, the first optical facilities are set in LED light emission device, the light for the LED/light source to be launched is oriented to
The fluorescence conversion layer, obtains the first mixing light；
S03, the second optical facilities are set in LED light emission device, it is described glimmering for the described first mixing light to be oriented to
Light conversion layer, at least mixes light of the part not by fluorescence conversion layer conversion in light by described first and is converted into long wave
Long light, obtains the second mixing light；
……
S0N, N-1 optical facilities are set in LED light emission device, the N-2 mixing light is oriented to the fluorescence
Conversion coating, obtains N-1 mixing light（N >=3, N is integer）.
Preferably, housing is set in LED light emission device, prefocus cup is set in the housing, the LED/light source is located at institute
The bottom of prefocus cup is stated, the upper lateral part of the housing is provided with exiting surface, and the fluorescence conversion layer is arranged at the exiting surface and institute
Between the other side for stating housing, using the top for the inner walls being oppositely arranged with the LED/light source as the first optical facilities,
, will be with described second using the region on the upper lateral part of inner walls between fluorescence conversion layer and exiting surface as the second optical facilities
Upper lateral part that optical facilities are oppositely arranged, inner walls opposite side is used as the 3rd optical facilities.
Preferably, in LED light emission device reflector, LED/light source is set at the rim of a cup of the reflector, by fluorescence conversion
Layer is arranged between the cup bottom of the reflector and the LED/light source, and LED lens are set above the LED/light source, described
LED/light source launches the direction of light towards fluorescence conversion layer, wherein, the LED lens are used as the first optical facilities；It is described
Inner surface on reflector from the cup bottom of reflector to the fluorescence conversion layer is used as the second optical facilities.
Preferably, the LED/light source transmitting blue light light.
Preferably, the fluorescence conversion layer is made by fluorescent material and mixed with resin.
A kind of LED light emission device of raising fluorescent material utilization rate of the present invention, includes the LED light of transmitting short wavelength light
Source, fluorescence conversion layer, the light for the LED/light source to be launched for short wavelength light to be converted into long wavelength's light
It is oriented to the fluorescence conversion layer and obtains the first optical facilities of the first mixing light, for the described first mixing light to be oriented into institute
State fluorescence conversion layer and at least mix light of the part not by fluorescence conversion layer conversion in light by described first and change
Into long wavelength light line to obtain the second optical facilities ... N-1 optical facilities of the second mixing light, for by the N-
2 mixing light are oriented to the fluorescence conversion layer, obtain N-1 mixing light（N >=3, N is integer）.
Preferably, including housing, the prefocus cup for being arranged at the enclosure interior, the LED/light source is located at the prefocus cup
Bottom, the upper lateral part of the housing is provided with exiting surface, and the fluorescence conversion layer is located at the exiting surface and the housing is another
Between sidepiece, the top for the inner walls being oppositely arranged with the LED/light source is used as the first optical facilities, the upside of inner walls
Region in portion between fluorescence conversion layer and exiting surface is oppositely arranged as the second optical facilities with second optical facilities
, the upper lateral part of inner walls opposite side be used as the 3rd optical facilities.
Preferably, including reflector, the LED/light source at the rim of a cup of the reflector, it is arranged at the reflector
Fluorescence conversion layer between cup bottom and the LED/light source and the LED lens above the LED/light source, wherein, it is described
LED/light source launches the direction of light towards fluorescence conversion layer, wherein, the LED lens are used as the first optical facilities；The reflection
Inner surface on cup from the cup bottom of reflector to the fluorescence conversion layer is used as the second optical facilities.
Preferably, a support is set at the rim of a cup of the reflector, and the LED/light source is set on the bracket.
Preferably, the support includes support plate and at least two support bars, one end of the support bar and the branch
Support plate is connected, and the other end is connected with the rim of a cup inwall of the reflector.
Compared with prior art, the method for raising LED light emission device fluorescent material utilization rate of the invention, is set by step
Put, the short wavelength light sent from LED/light source is oriented to fluorescence conversion layer at least twice and changed, is so considerably improved glimmering
The utilization rate of fluorescent material in light conversion layer, less amount of fluorescent material is used so as to reach, you can realized part short wavelength light
Excitated fluorescent powder obtains the purpose of long wavelength's light, LED light emission device is launched the purpose of the preferable mixed light of effect, that is, exists
The consumption of fluorescent material is saved in the case of not changing colour temperature, therefore the cost of manufacture of LED light emission device can be reduced.
Brief description of the drawings
Fig. 1 improves the flow chart of the embodiment of the method for LED light emission device fluorescent material utilization rate for the present invention；
Fig. 2 improves the structural representation of the LED light emission device embodiment one of fluorescent material utilization rate for the present invention；
Fig. 3 is Fig. 2 elevational schematic view；
Fig. 4 improves the structural representation of the LED light emission device embodiment two of fluorescent material utilization rate for the present invention.
Embodiment
In order that those skilled in the art more fully understands technical scheme, below by specific embodiment pair
The present invention is described in further detail.
The method that the present invention improves LED light emission device fluorescent material utilization rate, specifically includes following steps：
S01, in LED light emission device set transmitting short wavelength light LED/light source, be provided for by short wavelength light turn
Change the fluorescence conversion layer of long wavelength's light into；
S02, the first optical facilities are set in LED light emission device, the light for the LED/light source to be launched is oriented to
The fluorescence conversion layer, obtains the first mixing light；
S03, the second optical facilities are set in LED light emission device, it is described glimmering for the described first mixing light to be oriented to
Light conversion layer, at least mixes light of the part not by fluorescence conversion layer conversion in light by described first and is converted into long wave
Long light, obtains the second mixing light；
……
S0N, N-1 optical facilities are set in LED light emission device, the N-2 mixing light is oriented to the fluorescence
Conversion coating, obtains N-1 mixing light（N >=3, N is integer）.
The LED light emission device of the raising fluorescent material utilization rate of the present invention, includes LED/light source, the use of transmitting short wavelength light
It is oriented in short wavelength light to be converted into the fluorescence conversion layer of long wavelength's light, the light for the LED/light source to be launched
The fluorescence conversion layer obtains the first optical facilities of the first mixing light, for the described first mixing light guiding is described glimmering
Light conversion layer and the light conversion growth at least not changed a part in the described first mixing light by fluorescence conversion layer
Wavelength light is to obtain the second optical facilities ... N-1 optical facilities of the second mixing light, for the N-2 to be mixed
Closing light line is oriented to the fluorescence conversion layer, obtains N-1 mixing light（N >=3, N is integer）.
Improve the embodiment of the method for LED light emission device fluorescent material utilization rate
As shown in figure 1, the method for the raising LED light emission device fluorescent material utilization rate of the present embodiment, this method is specifically included
Following steps：
S01, the LED/light source that a transmitting short wavelength light is set, fluorescence conversion layer；
Wherein, LED/light source transmitting blue light light；
Wherein, fluorescence conversion layer can switch to the short wavelength light of reception in the longer light of wavelength, the present embodiment,
Fluorescence conversion layer is made by fluorescent material and mixed with resin.
S02, the first optical facilities of setting, are oriented to the fluorescence conversion layer by the light that the LED/light source is launched, obtain
First mixing light；
Specifically, after the short wavelength light that the LED/light source is launched is collected in first optical facilities, it will collect
Short wavelength light afterwards is oriented to the fluorescence conversion layer, makes the short wavelength light for the first time through fluorescence conversion layer, portion
Point short wavelength light carries out wavelength convert, i.e., described short wavelength light is mixed through obtaining first after fluorescence conversion layer for the first time
Existing short wavelength light in closing light line, the first mixing light, there is long wavelength's light again.
S03, the second optical facilities of setting, for the described first mixing light to be oriented into the fluorescence conversion layer, at least will
Light of the part not by fluorescence conversion layer conversion is converted into long wavelength's light in the first mixing light, obtains second
Mix light；
Specifically, second optical facilities mix ray-collecting by obtained in step S02 first, and first is mixed
Closing light line is oriented to the fluorescence conversion layer.For the first time through the light do not changed of fluorescence conversion layer, some the
It is secondary through fluorescence conversion layer after, occur wavelength convert, i.e., it is described first mixing light through the fluorescence conversion layer after
To the second mixing light；
S04, also provide last optical facilities, last time through the hybrid lightguide obtained after fluorescence conversion layer to
The exit facet of LED light emission device, forms emergent light.
The present embodiment is made the short wavelength light sent from LED/light source be oriented to fluorescence twice and turned by four steps of setting
Change layer to be changed, be so considerably improved the utilization rate of fluorescent material, less amount of fluorescent material is used so as to reach, you can realize
Part short wavelength light excitated fluorescent powder is obtained long wavelength's light, LED light emission device is launched the preferable mixed light of effect
Purpose, i.e., the consumption of conversion film fluorescent material is saved in the case where not changing colour temperature, therefore the making of LED light emission device can be reduced
Cost.
In other embodiments, after step S03, before step S04, can also including S04 ', there is provided the 3rd light
Mechanism or more optical facilities, are repeatedly oriented to light fluorescence conversion layer.
Improve the LED light emission device embodiment one of fluorescent material utilization rate
The LED light emission device of the raising fluorescent material utilization rate of the present embodiment, is manufactured using above method, such as Fig. 2 and Fig. 3 institutes
Show, including reflector 1, the LED/light source 2 at the rim of a cup 11 of the reflector 1, be arranged at reflector 11 cup bottom 12 with
Fluorescence conversion layer 3 between LED/light source 2 and the LED lens 4 positioned at the top of LED/light source 2, wherein, the transmitting light of LED/light source 2
Direction towards fluorescence conversion layer 3.
In the present embodiment, the light that LED/light source 2 is launched is oriented to fluorescence conversion by LED lens 4 as the first optical facilities
Layer obtains the first mixing light；From fluorescence conversion layer 3 to the inner surface 13 in this region of the cup bottom 12 of reflector 1 on reflector 1,
As the second optical facilities, the described first mixing light is oriented to fluorescence conversion layer 3 again and obtains the second mixing light, from LED
The short wavelength light that light source 2 is sent is to the second mixing light ultimately formed, and its light path is the route L1 shown in Fig. 2.
A support 5 is also set up in the present embodiment, for LED/light source 2 to be fixed at reflector rim of a cup 11.The support 5 is wrapped
Two support bars 51 and a support plate 52 are included, two support bars 51 are located at the both sides of support plate 52, support bar 51 1 respectively
End is connected with support plate 52, and the other end is connected with reflector rim of a cup 11.In the present embodiment, support bar 51 and support plate 52 are transparent
Ceramics, in other embodiments, support bar and support plate can also be metal or other materials, be not limited to the present embodiment.
Wherein, the first optical facilities, i.e. the LED lens 4 positioned at the top of LED/light source 2, an including accepting groove 41 can be by
The light extraction of LED/light source 2 is partially received in the accepting groove 41, is reached and is collected the light that the LED/light source is sent, is directed to
The effect of the fluorescence conversion layer.
In the present embodiment, the second described optical facilities are the cup bottoms that reflector 1 arrives reflector 1 in fluorescence conversion layer 3
First mixing light can be oriented to fluorescence conversion again by the inner surface 13 of the reflector 1 of 12 this scope, second optical facilities
Layer 3 and obtain the second mixing light.
In the present embodiment, by the way that LED/light source 2 is arranged at the rim of a cup 11 of the reflector 1, fluorescence conversion layer 3 is set
It is placed between the cup bottom 12 of reflector 11 and LED/light source 2, LED lens 4 is set in the top of LED/light source 2, and send out LED/light source 2
The direction of light is penetrated towards fluorescence conversion layer 3, so allows for passing through fluorescence conversion from the short wavelength light that LED/light source 2 is sent
Layer 3 is changed twice, improves the utilization rate of fluorescent material in fluorescence conversion layer, less amount of fluorescent material is used so as to reach, you can
Part short wavelength light excitated fluorescent powder is obtained long wavelength's light by realization, LED light emission device is launched effect and is preferably mixed
The purpose of closing light.
Improve the LED light emission device embodiment two of fluorescent material conversion efficiency
The LED light emission device of the raising fluorescent material utilization rate of the present embodiment, is manufactured using above method, as shown in figure 4, bag
Include housing 5, be arranged on the prefocus cup 6 of the interior lower end of housing 5, LED/light source 2 is provided with the cup bottom of prefocus cup 6, in the upside of housing
Provided with an exiting surface 7 and fluorescence conversion layer 3, fluorescence conversion layer 3 is located between exiting surface 7 and the opposite side of housing 5, and fluorescence turns
Change layer 3 to be vertically arranged.The light that the prefocus cup 6 of setting is used to send LED/light source 2 gathers the top for investing the inwall of housing 5.
Wherein, the top for the inwall of housing 5 being oppositely arranged with LED/light source 2 is used as the first optical facilities g1, the first optics machine
The short wavelength light that structure g1 sends LED/light source 2 is oriented to fluorescence conversion layer 3, and these short wavelength lights pass through fluorescence conversion 3 shape of layer
Into the first mixing light that long wavelength's light is had been converted into containing some；Shell between fluorescence conversion layer 3 and exiting surface 7
First mixing light is oriented to fluorescence conversion layer by the upper lateral part of the inwall of body 5 as the second optical facilities g2, the second optical facilities g2
3, the first mixing light mixes light through formation second after fluorescence conversion layer 3, compared to the first mixing light, the second mixed light
Long wavelength's light in line increases；Another upper lateral part for the inwall of housing 5 being oppositely arranged with the second optical facilities g2 is as the 3rd
Second mixing light is oriented to fluorescence conversion layer fluorescence conversion layer 3, the second mixing light by optical facilities g3, the 3rd optical facilities g3
Some short wavelength light is converted into long wavelength's light again after through fluorescence conversion layer fluorescence conversion layer, ultimately forms the 3rd and mixes
Closing light line, then sent out by exiting surface 7.In the present embodiment, the short wavelength light that sends from LED/light source 2 is to ultimately forming
3rd mixing light, its light path is the route L2 shown in Fig. 4.
Raising fluorescent material utilization rate LED light emission device in the present embodiment, by setting the first optical facilities g1, the second light
Learn mechanism g2, the 3rd optical facilities g3, make short wavelength light that LED/light source 2 sends three times through fluorescence conversion layer 3, partly by
Fluorescence conversion layer 3 is converted into long wavelength's light, thus substantially increases the utilization rate of fluorescent material, small amount is used so as to reach
Fluorescent material, you can realization part short wavelength light excitated fluorescent powder is obtained long wavelength's light, launch LED light emission device
The purpose of the preferable mixed light of effect.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of LED light emission device for improving fluorescent material utilization rate, it is characterised in that the LED light including launching short wavelength light
Source, fluorescence conversion layer, the light for the LED/light source to be launched for short wavelength light to be converted into long wavelength's light
It is oriented to the fluorescence conversion layer and obtains the first optical facilities of the first mixing light, for the described first mixing light to be oriented into institute
State fluorescence conversion layer and at least mix light of the part not by fluorescence conversion layer conversion in light by described first and change
Into long wavelength light line to obtain the second optical facilities of the second mixing light；Also include being used to N-2 mixing light being oriented to institute
Fluorescence conversion layer is stated to obtain the N-1 optical facilities of N-1 mixing light, wherein, N>3, N be integer；
Wherein, as N=4, including housing, the reflector for being arranged at the enclosure interior, the LED/light source is positioned at the optically focused
The bottom of cup, the upper lateral part of the housing is provided with exiting surface, and the fluorescence conversion layer is located at the exiting surface and the housing is another
Between one sidepiece, the tops of the inner walls being oppositely arranged with the LED/light source as the first optical facilities, inner walls it is upper
Region on sidepiece between fluorescence conversion layer and exiting surface is oppositely arranged as the second optical facilities with second optical facilities
, the upper lateral part of inner walls opposite side be used as the 3rd optical facilities.
2. the LED light emission device according to claim 1 for improving fluorescent material utilization rate, it is characterised in that the reflector
Rim of a cup at a support is set, the LED/light source is set on the bracket.
3. the LED light emission device according to claim 2 for improving fluorescent material utilization rate, it is characterised in that the support bag
Support plate and at least two support bars are included, one end of the support bar is connected with the support plate, the other end and the reflection
The rim of a cup inwall connection of cup.
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| CN201310460573.8A CN103500789B (en) | 2013-09-29 | 2013-09-29 | Improve the method and LED light emission device of LED light emission device fluorescent material utilization rate |
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| CN101324319A (en) * | 2007-06-11 | 2008-12-17 | 启萌科技有限公司 | Illumination device |
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| CN100382341C (en) * | 2004-06-28 | 2008-04-16 | 光宝科技股份有限公司 | Reflective photoelectric semiconductor module |
| US8083364B2 (en) * | 2008-12-29 | 2011-12-27 | Osram Sylvania Inc. | Remote phosphor LED illumination system |
| CN101702421B (en) * | 2009-10-23 | 2011-03-23 | 中外合资江苏稳润光电有限公司 | Manufacturing method of white light LED |
| CN203644819U (en) * | 2013-09-29 | 2014-06-11 | 佛山市国星光电股份有限公司 | LED luminescent device capable of improving phosphor utilization rate |
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