CN102853283A - Light emitting diode lighting device - Google Patents
Light emitting diode lighting device Download PDFInfo
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- CN102853283A CN102853283A CN2011101817586A CN201110181758A CN102853283A CN 102853283 A CN102853283 A CN 102853283A CN 2011101817586 A CN2011101817586 A CN 2011101817586A CN 201110181758 A CN201110181758 A CN 201110181758A CN 102853283 A CN102853283 A CN 102853283A
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- white light
- light source
- lighting device
- emitting diode
- luminous efficiency
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- 238000009877 rendering Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 2
- 239000000843 powder Substances 0.000 description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000021180 meal component Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
一种发光二极管照明装置，其包括至少一第一白光光源以及至少一第二白光光源。该第一白光光源的发光效率为V1，显色性值为C1，该第二白光光源的发光效率为V2，显色性值为C2，其中，V1(V2，C1(C2。该发光二极管照明装置发出的光由第一白光光源和第二白光光源发出的白光混合后生成。本发明的发光二极管照明装置将显色性较高的第一白光光源以及发光效率较高的第二白光光源产生的光混合，混合后生成的白光会具有较高发光效率同时也有较高显色性。
A light-emitting diode lighting device includes at least one first white light source and at least one second white light source. The luminous efficiency of the first white light source is V 1 , the color rendering value is C 1 , the luminous efficiency of the second white light source is V 2 , and the color rendering value is C 2 , where V 1 (V 2 , C 1 (C 2 . The light emitted by the light-emitting diode lighting device is generated by mixing the white light emitted by the first white light source and the second white light source. The light-emitting diode lighting device of the present invention combines the first white light source with higher color rendering and the luminous efficiency The light generated by the higher second white light source is mixed, and the white light generated after mixing will have higher luminous efficiency and higher color rendering.
Description
Technical field
The present invention relates to a kind of lighting device, especially a kind of light emitting diode illuminating apparatus.
Background technology
Light emitting diode is a kind of energy-saving and environmental protection, long-life solid light source, and therefore always very active to the research of led technology in recent ten years, light emitting diode also has the trend of conventional light source such as gradually replacing fluorescent lamp, incandescent lamp.
In the prior art, white light source uses different fluorescent material can form the white light source of different colour renderings usually by forming behind the light-emitting diode chip for backlight unit excitated fluorescent powder.Yet utilize the light-emitting diode chip for backlight unit excitated fluorescent powder can cause the luminous efficiency of light source to reduce, different fluorescent material are also different on the impact of luminous efficiency, and generally, the white light source luminous efficiency that colour rendering is higher is lower.For example, see also Fig. 1, the white light that adopts blue-light LED chip to excite the yellow fluorescent powder of doped yttrium aluminum garnet (YAG) to produce can obtain higher luminous flux, and luminous efficiency is higher, but its colour rendering can be relatively relatively poor; The white light that adopts blue-light LED chip to excite red green fluorescence powder to produce, because the increase of red composition in the spectrum, its colour rendering is higher, but because the conversion efficiency of red fluorescence powder is lower, can cause whole device luminous efficiency to reduce.So how a kind of balance of luminous efficiency and colour rendering and light emitting diode illuminating apparatus of coordination taken into account is provided, becomes insider's technical issues that need to address.
Summary of the invention
In view of this, be necessary to provide a kind of balance of luminous efficiency and colour rendering and light emitting diode illuminating apparatus of coordination taken into account.
A kind of light emitting diode illuminating apparatus, it comprises at least one the first white light source and at least one the second white light source.The luminous efficiency of this first white light source is V
1, the colour rendering value is C
1, the luminous efficiency of this second white light source is V
2, the colour rendering value is C
2, wherein, V
1(V
2, C
1(C
2After mixing, the white light that the light that this light emitting diode illuminating apparatus sends is sent by the first white light source and the second white light source generates.
The light that the second white light source that the first white light source that above-mentioned light emitting diode illuminating apparatus is higher with colour rendering and luminous efficiency are higher produces mixes, the white light that generates after mixing can be taken into account balance and the coordination of luminous efficiency and colour rendering, makes the luminous efficiency of light emitting diode illuminating apparatus and colour rendering all reach a better value.The colour rendering that can also change light emitting diode illuminating apparatus by position and the quantitative adjustment to the first white light source and the second white light source in addition and brightness are equivalent, thereby satisfy the needs of various occasions.
Description of drawings
Fig. 1 is white light source colour rendering and luminous efficiency curve figure.
Fig. 2 is the top view of the light emitting diode illuminating apparatus structure of embodiment of the present invention.
Fig. 3 is that light emitting diode illuminating apparatus among Fig. 2 is along the cross-sectional view of II-II direction.
Fig. 4 is colour rendering and the luminous efficiency curve figure of the light emitting diode illuminating apparatus of embodiment of the present invention.
The main element symbol description
| Light emitting |
100 |
| |
10 |
| The first |
20 |
| The second |
30 |
| |
11 |
| The |
12 |
| Accommodating |
13 |
| |
14 |
The following specific embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 2 and Fig. 3, a kind of light emitting diode illuminating apparatus 100 that the present invention's one preferred embodiments provides, it comprises pedestal 10 and is arranged on some the first white light sources 20 and some the second white light sources 30 in this pedestal.
Described pedestal 10 comprises end face 11 and bottom surface 12, pedestal 10 from end face 11 along the bottom surface 12 directions offer and form an accommodating cup 13, the inner surface of this accommodating cup 13 is the inclined plane, this inclined plane from end face 11 to the bottom surface 12 directions extend and radially sloping inwardly along accommodating cup 13, make whole accommodating cup 13 wide at the top and narrow at the bottom, be a funnel-form.Some the first white light sources 20 and some the second white light sources 30 are staggered on the bottom surface of accommodating cup 13.Also be formed with a plurality of juts 14 on the inner surface of this accommodating cup 13, this jut 14 closely is arranged in the inner surface of accommodating cup 13, be used for the light that described the first white light source 20 of scattering and the second white light source 30 send, the light that the first white light source 20 and the second white light source 30 are sent can better mix, and improves light extraction efficiency.Preferably, also be coated with reflectorized material on the jut 14 of accommodating cup 13 inner surfaces, be used for strengthening dispersion effect.
Described the first white light source 20 comprises blue-light LED chip and the red green fluorescence powder of covering on this blue-light LED chip bright dipping light path, and this blue-light LED chip excites this red green fluorescence powder to produce the first white light.Described the second white light source 30 comprises blue-light LED chip and the yellow fluorescent powder of covering on this blue-light LED chip bright dipping light path, and this blue-light LED chip excites this yellow fluorescent powder to produce the second white light.The luminous efficiency of the first white light source 20 is V
1, the colour rendering value is C
1, the luminous efficiency of the second white light source 30 is V
2, the colour rendering value is C
2, wherein, V
1(V
2, C
1(C
2This is that its colour rendering can be higher because increase has the red fluorescence meal component in the spectrum of the first white light source 20, because the conversion efficiency of red fluorescence powder is lower, its luminous efficiency can be lower simultaneously; And 30 of the second white light sources excite single yellow fluorescent powder, thereby its luminous efficiency can be higher, and colour rendering can be relatively low simultaneously.
Be understandable that the quantity of described the first white light source 20 and described the second white light source 30 also can be one.
In other embodiments, described the first white light source 20 can be made of some red, green, blue three-primary color LED chips, light compositing the first white light that this red, green, blue three-primary color LED chip sends.In addition, described the first white light source 20 also can comprise UVLED chip and red, green, blue fluorescent material, and the UV optical excitation red, green, blue fluorescent material that the UVLED chip sends produces the first white light.Moreover described the first white light source 20 can also be to add red fluorescence powder by blue-light LED chip and green light LED chip to consist of, and mixes behind blue-light LED chip and the green light LED chip excitated red fluorescent powder to produce the first white light.
In use, the white light that the first white light source 20 in the light emitting diode illuminating apparatus 100 and the second white light source 30 produce penetrates after the mixing to light emitting diode illuminating apparatus 100 through the scattering of the jut 14 of accommodating cup 13 inwalls.Please then consult Fig. 4, wherein the A point represents the first white light source 20 and the second white light source 30 mixed luminous efficiency and colour renderings, the B point represents luminous efficiency and the colour rendering of the first white light source 20, the C point represents luminous efficiency and the colour rendering of the second white light source 30, the colour rendering of the white light of generation was higher with respect to the colour rendering of the white light of independent use the second white light source 30 generations after as can be seen from Figure 4 the first white light source 20 and the second white light source 30 mixed, and luminous efficiency is higher with respect to the luminous efficiency of independent use the first white light source 20.So light emitting diode illuminating apparatus 100 is because the mixing of the first white light source 20 and the second white light source 30, the white light that produces at last can be taken into account balance and the coordination of luminous efficiency and colour rendering, make luminous efficiency and colour rendering all reach a better value, the colour rendering that can also change light emitting diode illuminating apparatus 100 by position and the quantitative adjustment to the first white light source 20 and the second white light source 30 in addition and brightness etc., thus can satisfy the needs of various occasions.
Compared to prior art, the light that the second white light source that the first white light source that light emitting diode illuminating apparatus of the present invention is higher with colour rendering and luminous efficiency are higher produces mixes, the white light that generates after mixing can be taken into account balance and the coordination of luminous efficiency and colour rendering, makes the luminous efficiency of light emitting diode illuminating apparatus and colour rendering all reach a better value.The colour rendering that can also change light emitting diode illuminating apparatus by position and the quantitative adjustment to the first white light source and the second white light source in addition and brightness are equivalent, thereby satisfy the needs of various occasions.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101817586A CN102853283A (en) | 2011-06-30 | 2011-06-30 | Light emitting diode lighting device |
| TW100124132A TWI487146B (en) | 2011-06-30 | 2011-07-08 | Light emitting diode lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101817586A CN102853283A (en) | 2011-06-30 | 2011-06-30 | Light emitting diode lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102853283A true CN102853283A (en) | 2013-01-02 |
Family
ID=47400120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101817586A Pending CN102853283A (en) | 2011-06-30 | 2011-06-30 | Light emitting diode lighting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102853283A (en) |
| TW (1) | TWI487146B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234149A (en) * | 2013-03-29 | 2013-08-07 | 京东方科技集团股份有限公司 | Backlight module, liquid crystal display and backlight drive control method |
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| JP2004103444A (en) * | 2002-09-11 | 2004-04-02 | Toshiba Lighting & Technology Corp | lighting equipment |
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| JP2001184910A (en) * | 1999-12-28 | 2001-07-06 | Toshiba Lighting & Technology Corp | Lighting source and lighting device using light emitting diode |
| JP2004103444A (en) * | 2002-09-11 | 2004-04-02 | Toshiba Lighting & Technology Corp | lighting equipment |
| CN2682276Y (en) * | 2004-02-04 | 2005-03-02 | 政齐科技股份有限公司 | White Light Emitting Diode Combination Device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103234149A (en) * | 2013-03-29 | 2013-08-07 | 京东方科技集团股份有限公司 | Backlight module, liquid crystal display and backlight drive control method |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI487146B (en) | 2015-06-01 |
| TW201301574A (en) | 2013-01-01 |
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| PB01 | Publication | ||
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Application publication date: 20130102 |