CN102810537A - White-light LED lighting device - Google Patents
White-light LED lighting device Download PDFInfo
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- CN102810537A CN102810537A CN2012102962717A CN201210296271A CN102810537A CN 102810537 A CN102810537 A CN 102810537A CN 2012102962717 A CN2012102962717 A CN 2012102962717A CN 201210296271 A CN201210296271 A CN 201210296271A CN 102810537 A CN102810537 A CN 102810537A
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- H—ELECTRICITY
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L2924/30—Technical effects
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Abstract
A white-light LED lighting device comprises a base, a blue-light LED chip, a reflector and a transparent substrate with a fluorescent coating. Two ends of the reflector are connected with the base and the substrate respectively, and a reflection face in the reflector is provided with a reflection layer. The blue-light LED chip is arranged on one face, facing the fluorescent coating of the transparent substrate, of the base. An electrode lead of the blue-light LED chip penetrates out of the base. The blue-light LED chip can be a single chip or chips in serial connection, parallel connection or mixed connection, and the transparent substrate can be planar, convex or cylindrical. White light is obtained by using blue light given out by the blue-light LED chip to irradiate the transparent substrate with the fluorescent coating, light loss caused by the fact that stimulated light portions of fluorescent materials reenter the chip to be absorbed, the radiation problem is relieved, and light emitting wavelength drifting, light emitting efficiency decreasing and the like of the fluorescent materials caused by the device radiation problem can be avoided.
Description
Technical field
The present invention relates to White LED light-emitting device.
Background technology
White light LEDs as a kind of new lighting system based on following operation principle: the LED blue chip sends blue light illumination fluorophor (fluorescent material), and fluorophor receives the light that mixes that mixes light or gold-tinted and ruddiness that exciting of blue light sent gold-tinted or green glow and ruddiness.The part blue light that light that these fluorophor are excited to send and blue chip send and synthesize white light.Fluorophor is cured in chip surface equably through silica gel or mixed with resin in common encapsulation technology.The shortcoming of this packaged type is following: heat has little time to distribute and causes the device working temperature to raise during device work, make the emission wavelength of fluorophor drift about, and the luminous intensity of fluorophor can descend.In addition, when fluorophor is close to the blue chip surface, be absorbed, cause the device luminous efficiency to descend because the light portion that fluorophor is excited to send can get into chip again.
Summary of the invention
The object of the invention is to provide substrate that a kind of blue light illumination that utilizes blue-light LED chip to send contains the fluorophor organic coating to obtain the device of white light.This light-emitting device can effectively solve the problem of the white light LEDs appearance of above-mentioned utilization conventional package technology.
The present invention proposes a kind of White LED light-emitting device; Comprise base, blue-light LED chip, reflection shield and contain the transparency carrier of fluorescent coating; The two ends of reflection shield connect base and substrate respectively; The reflector internal reflection surface is provided with reflector layer, and blue-light LED chip is arranged on seating plane has the one side of fluorescent coating to transparency carrier, and the contact conductor of blue-light LED chip passes base; Wherein blue-light LED chip is the chip of single chips, one group of series, parallel or series-parallel connection.Transparency carrier is the resin plate of fluorescent material filling or the glass plate of fluorescent material sintering.Reflector layer can be polishing layer, metal or other coating.
Reflection shield is cylindrical, and base and transparency carrier are respectively as said columniform two bottom surfaces; Or reflection shield is reverse frustoconic or bowl-type, and base is gone to the bottom or the bowl end as the rounding platform, and transparency carrier is as the upper base of reverse frustoconic or be positioned at the position of the rim of a bowl.
Wherein reflection shield is cuboid or chamfered edge platform shape, and base is as going to the bottom of cuboid or going to the bottom of chamfered edge platform shape, and transparency carrier is as the upper base of cuboid or the upper base or the lid of chamfered edge platform shape.
Wherein reflection shield is half-cylindrical, and base is along the straight line setting, and this straight line is parallel with semi-cylindrical rectangular surfaces, and this straight line drops on through in axis of a cylinder and the plane vertical with semicircular rectangular surfaces, and transparent planar substrate is as semi-cylindrical rectangular surfaces.
Wherein the cross section contour of reflection shield is parabolic type, and base is along the straight line setting, and this straight line overlaps with paraboloidal focal line, and transparency carrier is as the lid of reflection shield.Transparency carrier can be cylindrical.
Wherein reflection shield is elongated cuboid or chamfered edge platform shape, and base is gone to the bottom as elongated cuboid or chamfered edge platform shape, and transparent cylindrical substrate is as the lid of elongated cuboid or chamfered edge platform shape.
Substrate wherein is the plane; Or sphere, hyperboloid, ellipsoid or paraboloidal convex surface; Or be cylindrical; Or the outline line in the cross section of substrate is the part of circular arc, parabola, hyperbola, ellipse or other camber line.
Fluorophor in the fluorescent coating is the LED green emitting phosphor of LED yellow fluorescent powder, arbitrary proportion and mixture or the LED yellow fluorescent powder of arbitrary proportion and the mixture of LED red fluorescence powder of LED red fluorescence powder.Comprise fluorescent coating and adopt 2 layers of coating structure, and every layer coating layer thickness is 3 microns to 5 millimeters; The fluorophor of wherein above-mentioned 2 layers of coating structure is respectively LED green emitting phosphor and LED red fluorescence powder, or is respectively LED yellow fluorescent powder and LED red fluorescence powder.
Beneficial effect of the present invention is following: 1) uncoated silica gel or the resin that contains fluorophor in LED blue chip surface, so heat dissipation problem greatly alleviated, and also can reduce the light portion of being excited to send because of fluorophor and get into chip again and be absorbed the luminous loss that is caused.2) organic coating that contains fluorophor in the light-emitting device is away from the LED blue chip, so the degradation problem can effectively be alleviated under the emission wavelength drift that causes because of the device heat dissipation problem of fluorophor and the luminous intensity.Simultaneously can avoid using in the conventional art encapsulated LED luminescent device because rotten jaundice of silica gel or resin and the reflective device light efficiency decline problem that causes.Light efficiency can obviously improve, and in the luminescent device constructed in accordance, the chip cooling problem is effectively solved, and the ambient temperature of fluorophor is low, and therefore the problems such as luminescent properties deterioration that the elevated operating temperature because of device causes can not take place.
Description of drawings
Fig. 1 is the sketch map of the White LED light-emitting device of the embodiment of the invention 1.
Fig. 2 is the sketch map of the White LED light-emitting device of the embodiment of the invention 2.
Fig. 3 is the sketch map of the White LED light-emitting device of the embodiment of the invention 3.
Fig. 4 is the sketch map of the White LED light-emitting device of the embodiment of the invention 4.
Fig. 5 is the sketch map of the White LED light-emitting device of the embodiment of the invention 5.
Fig. 6 is the sketch map of the White LED light-emitting device of the embodiment of the invention 6.
Fig. 7 is the sketch map of the White LED light-emitting device of the embodiment of the invention 7.
Fig. 8 is the sketch map of the White LED light-emitting device of the embodiment of the invention 8.
Fig. 9 is the sketch map of the White LED light-emitting device of the embodiment of the invention 9.
Figure 10 is the sketch map of the White LED light-emitting device of the embodiment of the invention 10.
Figure 11 is the sketch map of the White LED light-emitting device of the embodiment of the invention 11.
Figure 12 is the sketch map of the White LED light-emitting device of the embodiment of the invention 12.
Figure 13 is the sketch map of the White LED light-emitting device of the embodiment of the invention 13.
Figure 14 is the sketch map of the White LED light-emitting device of the embodiment of the invention 14.
Figure 15 is the sketch map of the White LED light-emitting device of the embodiment of the invention 15.
Embodiment
Being coated with metallic film or reflection shield on the reflection shield internal reflection surface all is that metal is processed.Substrate material can be a glass, or PMMA or MS resin or other transparent organic materials of acrylic (PMMA), PMMA alloy resin, Merlon, PC alloy resin, epoxy, butylbenzene, benzene sulphone resin, CR-39, MS, NAS, polyurethane optical resin, nylon or PC enhancing.
In the said light-emitting device, reflection shield can be cylindrical, and base and substrate are respectively as said columniform two bottom surfaces.
In the said light-emitting device, reflection shield can be reverse frustoconic, and base is gone to the bottom as the rounding platform, and substrate is as the upper base of reverse frustoconic.
In the said light-emitting device, reflection shield can be bowl-type, base as bowl at the bottom of, substrate is positioned at the position of the rim of a bowl.
In the said light-emitting device, reflection shield can be cuboid, and base is gone to the bottom as cuboid, and substrate is as the upper base of cuboid.
In the said light-emitting device, reflection shield can be chamfered edge platform shape, and base is gone to the bottom as chamfered edge platform shape, and substrate is as the upper base of chamfered edge platform shape.
In the said light-emitting device; It is half-cylindrical that reflection shield can be, and base is along the straight line setting, and this straight line is parallel with semi-cylindrical rectangular surfaces; And this straight line drops on through in axis of a cylinder and the plane vertical with semicircular rectangular surfaces, and substrate is as semi-cylindrical rectangular surfaces.
In the said light-emitting device, substrate can be a convex-surface type, like the convex surface of sphere or hyperboloid, parabola or other arbitrary shapes.
In the said light-emitting device, reflection shield can be cylindrical, and base and substrate are respectively as said columniform going to the bottom and loam cake.
In the said light-emitting device, reflection shield can be reverse frustoconic, and base is gone to the bottom as the rounding platform, and substrate is as the loam cake of reverse frustoconic.
In the said light-emitting device, reflection shield can be bowl-type, base as bowl at the bottom of, substrate is as the loam cake of bowl.
In the said light-emitting device, reflection shield can be cuboid, and base is gone to the bottom as cuboid, and substrate is as the loam cake of cuboid.
In the said light-emitting device, reflection shield can be chamfered edge platform shape, and base is gone to the bottom as chamfered edge platform shape, and substrate is as the loam cake of chamfered edge platform shape.
In the said light-emitting device, substrate can be a cylindrical, and the outline line in its cross section can be circular arc line, parabola or hyperbola or other camber line arbitrarily.
In the said light-emitting device, reflection shield can be cuboid, and base is gone to the bottom as cuboid, and substrate is as the lid of cuboid.
In the said light-emitting device, reflection shield can be elongated cuboid (more much longer than another side) or chamfered edge platform shape on one side, and base is gone to the bottom as elongated cuboid or chamfered edge platform shape, and transparent cylindrical substrate is as the lid of elongated cuboid or chamfered edge platform shape.
In the said light-emitting device; It is half-cylindrical that reflection shield can be, and base is along the straight line setting, and this straight line is parallel with semi-cylindrical rectangular surfaces; And this straight line drops on through in axis of a cylinder and the plane vertical with semicircular rectangular surfaces, and transparent cylindrical substrate is as semi-cylindrical lid.
In the said light-emitting device, the cross section contour of reflection shield can be parabolic type, and base is along the straight line setting, and this straight line overlaps with paraboloidal focal line, and transparent cylindrical substrate is as the lid of light-emitting device.
In the said light-emitting device; Fluorophor can be the LED green emitting phosphor of LED yellow fluorescent powder, arbitrary proportion and mixture or the LED yellow fluorescent powder of arbitrary proportion and the mixture of LED red fluorescence powder of LED red fluorescence powder; Can regulate glow color through the ratio of regulating fluorescent material; Or say colour temperature, as long as the adjusting ratio just can obtain the LED light of panchromatic temperature scope.
In the said light-emitting device, base has heat sinking function, is processed by aluminium or pottery.
The shape that keyset or the adapter ring, the especially substrate that are provided with different shape between reflection shield and the transparency carrier also have been described among the embodiment is under the situation of non-writing board shape.
Specific embodiment also cooperates appended graphic explanation following.
Fig. 1 is the sketch map of the White LED light-emitting device of the embodiment of the invention 1.White LED light-emitting device comprises: base 1, blue-light LED chip 2, reflection shield 3 and substrate 4.The two ends of reflection shield 3 connect base 1 and substrate 4 respectively, and blue-light LED chip 2 is arranged on the one side of base 1 in the face of substrate 4, and the contact conductor of blue-light LED chip 2 passes base 1, apply the organic coating that contains fluorophor on the surface of substrate 4.
As one of specific embodiment, in order to obtain white light, fluorophor can be the LED yellow fluorescent powder.In order to improve the color rendering index of white light, fluorophor also can be the LED green emitting phosphor of arbitrary proportion and the mixture of LED red fluorescence powder, or the mixture of LED yellow fluorescent powder and a small amount of LED red fluorescence powder.Can regulate glow color through the ratio of regulating fluorescent material, or say colour temperature, as long as the adjusting ratio just can obtain the LED light of panchromatic temperature scope.
As one of specific embodiment, the organic coating that contains fluorophor can adopt 2 layers of coating structure, and every layer coating layer thickness is 3 microns to 5 millimeters.Organic material in the two layers of coatings is consistent, and the fluorophor in the two layers of coatings can be respectively LED green emitting phosphor and LED red fluorescence powder, perhaps is respectively LED yellow fluorescent powder and LED red fluorescence powder.But the fluorophor composition in the two layers of coatings is different.
As one of specific embodiment, the base 1 of light-emitting device has heat sinking function concurrently.
As one of specific embodiment; The LED blue chip 2 of light-emitting device can be that epitaxial growth is on the SiC substrate; Or be grown on jewel (Al2O3) substrate; Or be grown on the Si substrate, or be transferred on other substrates after the growth in above-mentioned three kinds of substrates any one.
As one of specific embodiment, the LED blue chip 2 of light-emitting device can be single, or many (chipsets), the multiple chips group can be through connecting line series connection or parallel connection or series-parallel connection.
As one of specific embodiment; Between LED blue chip 2 and substrate, be provided with reflection shield 3; Purpose be blu-ray reflection that LED blue chip 2 is sent to the organic coating that comprises fluorophor, excited fluophor is luminous, after the part blue light of sending with LED blue chip 2, obtains white light.
As one of specific embodiment, reflection shield is cylindrical, internal reflection surface can the metal plated film to strengthen the light reflecting effect.
With Fig. 2 is the sketch map of the White LED light-emitting device of embodiment 2.
Present embodiment is 7 one-tenth reverse frustoconics of reflection shield with the difference of embodiment 1, and base 5 is gone to the bottom as reverse frustoconic, and substrate 8 is as the upper base of reverse frustoconic.
With Fig. 3 is the sketch map of the White LED light-emitting device of the embodiment of the invention 3.
The difference of present embodiment and embodiment 1 is that reflection shield 11 is bowl-type, and base 9 is as the bowl end, and substrate 12 is positioned at the position of the rim of a bowl.
With Fig. 4 is the sketch map of the White LED light-emitting device of the embodiment of the invention 4.
The difference of present embodiment and embodiment 1 is that reflection shield is cuboid, and base 13 is gone to the bottom as cuboid, and substrate 17 is as the upper base of cuboid.Reflector is made up of the reflecting surface 15 and 16 of 4 rectangles.One group of relative in 4 reflectings surface 15 and 16 reflecting surface physical dimension is identical, and two adjacent reflecting surface physical dimensions can be identical, also can be different, and its shape can be a square or rectangular.
With Fig. 5 is the sketch map of the White LED light-emitting device of the embodiment of the invention 5.
The difference of present embodiment and embodiment 1 is that reflection shield is chamfered edge platform shape, and base 18 is gone to the bottom as chamfered edge platform shape, and substrate 22 is as the upper base of chamfered edge platform shape.Reflector falls trapezoidal reflecting surface 20 and 21 by 4 and constitutes.One group of relative in 4 reflectings surface 20 and 21 reflecting surface physical dimension is identical, and two adjacent reflecting surface physical dimensions can be identical, also can be different.
With Fig. 6 is the sketch map of the White LED light-emitting device of the embodiment of the invention 6.
The difference of present embodiment and embodiment 1 is that reflection shield is half-cylindrical; Have reflecting surface 25 and 26; Base 23 laterally arranges with semi-cylindrical rectangular surfaces, certainly base 23 also can with the non-parallel setting of semi-cylindrical rectangular surfaces, substrate 27 is as semi-cylindrical rectangular surfaces.
True example 7
With Fig. 7 is the sketch map of the White LED light-emitting device of the embodiment of the invention 7.
The difference of present embodiment and embodiment 1 is that substrate is a convex-surface type, like the convex surface of sphere or hyperboloid, parabola or other arbitrary shapes.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 28.Substrate 29 is as the loam cake of device.
Embodiment 8
With Fig. 8 is the sketch map of the White LED light-emitting device of the embodiment of the invention 8.
The difference of present embodiment and embodiment 1 is that substrate is a convex-surface type, like the convex surface of sphere or hyperboloid, parabola or other arbitrary shapes.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 30.
Present embodiment is 7 one-tenth reverse frustoconics of reflection shield with the difference of embodiment 1, and base 5 is gone to the bottom as reverse frustoconic, and substrate 31 is as the loam cake of device.
With Fig. 9 is the sketch map of the White LED light-emitting device of the embodiment of the invention 9.
The difference of present embodiment and embodiment 1 is that substrate is a convex-surface type, like the convex surface of sphere or hyperboloid, parabola or other arbitrary shapes.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 32.
The difference of present embodiment and embodiment 1 is that reflection shield 11 is bowl-type, and base 9 is as the bowl end, and substrate 33 is as the loam cake of device.
With Figure 10 is the sketch map of the White LED light-emitting device of the embodiment of the invention 10.
The difference of present embodiment and embodiment 1 is that substrate is a convex-surface type, like the convex surface of sphere or hyperboloid, parabola or other arbitrary shapes.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 34.
The difference of present embodiment and embodiment 1 is that reflection shield is cuboid, and base 13 is gone to the bottom as cuboid, and substrate 35 is as the loam cake of device.Reflector is made up of the reflecting surface 15 and 16 of 4 rectangles.One group of relative in 4 reflectings surface 15 and 16 reflecting surface physical dimension is identical, and two adjacent reflecting surface physical dimensions can be identical, also can be different, and its shape can be a square or rectangular.
With Figure 11 is the sketch map of the White LED light-emitting device of the embodiment of the invention 11.
The difference of present embodiment and embodiment 1 is that substrate is a convex-surface type, like the convex surface of sphere or hyperboloid, parabola or other arbitrary shapes.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 36.
The difference of present embodiment and embodiment 1 is that reflection shield is chamfered edge platform shape, and base 18 is gone to the bottom as chamfered edge platform shape, and substrate 37 is as the loam cake of device.Reflector falls trapezoidal reflecting surface 20 and 21 by 4 and constitutes.One group of relative in 4 reflectings surface 20 and 21 reflecting surface physical dimension is identical, and two adjacent reflecting surface physical dimensions can be identical, also can be different.
With Figure 12 is the sketch map of the White LED light-emitting device of the embodiment of the invention 12.
The difference of present embodiment and embodiment 1 is that substrate is a cylindrical, and the outline line in its cross section can be circular arc line, parabola or hyperbola or other camber line arbitrarily.
The difference of present embodiment and embodiment 1 is that this device do not establish reflector, and the upper surface 40 of base 38 is coated with metallic film, has the function of reflection ray.
The difference of present embodiment and embodiment 1 is that substrate 41 directly is positioned on the base 38.
With Figure 13 is the sketch map of the White LED light-emitting device of the embodiment of the invention 13.
The difference of present embodiment and embodiment 1 is that substrate is a cylindrical, and the outline line in its cross section can be circular arc line, parabola or hyperbola or other camber line arbitrarily.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 42.
The difference of present embodiment and embodiment 1 is that reflection shield is cuboid, and base 13 is gone to the bottom as cuboid, and substrate 43 is as the lid of cuboid.Reflector is made up of the reflecting surface 15 and 16 of 4 rectangles.One group of relative in 4 reflectings surface 15 and 16 reflecting surface physical dimension is identical, and two adjacent reflecting surface physical dimensions can be identical, also can be different, and its shape can be a square or rectangular.
With Figure 14 is the sketch map of the White LED light-emitting device of the embodiment of the invention 13.
The difference of present embodiment and embodiment 1 is that substrate is a cylindrical, and the outline line in its cross section can be circular arc line, parabola or hyperbola or other camber line arbitrarily.
The difference of present embodiment and embodiment 1 is between reflection shield and substrate, to be provided with connecting portion 48.
The difference of present embodiment and embodiment 1 is that reflection shield is elongated cuboid or elongated chamfered edge platform shape, and base is gone to the bottom as elongated cuboid or elongated chamfered edge platform shape, and substrate 49 is as the loam cake of device.Reflector is made up of 4 rectangles or trapezoidal reflecting surface 46 and 47.One group of relative in 4 reflectings surface 46 and 47 reflecting surface physical dimension is identical, and two adjacent reflecting surface physical dimensions can be identical, also can be different.
With Figure 15 is the sketch map of the White LED light-emitting device of the embodiment of the invention 14.
The difference of present embodiment and embodiment 1 is that substrate is a cylindrical, and the outline line in its cross section can be circular arc line, parabola or hyperbola or other camber line arbitrarily.
The difference of present embodiment and embodiment 1 is, connecting portion 54 is set between reflection shield and substrate.
The difference of present embodiment and embodiment 1 is, it is half-cylindrical that reflection shield is, and base is along the straight line setting, and this straight line is parallel with semi-cylindrical rectangular surfaces, and this straight line drops on through in axis of a cylinder and the plane vertical with semicircular rectangular surfaces.Reflection shield has reflecting surface 52 and 53, and base 50 laterally arranges with semi-cylindrical rectangular surfaces, certainly base 50 also can with the non-parallel setting of semi-cylindrical rectangular surfaces, substrate 55 is as the lid of device.
The difference of present embodiment and embodiment 1 is that the cross section contour of reflection shield can also be parabolic type, and base is along the straight line setting, and this straight line overlaps with paraboloidal focal line.
In sum; Directly the mixture of silica gel or resin and fluorophor is not bonded on the LED blue chip and encapsulates; LED blue chip 4 radiating effects strengthen greatly; The heat dissipation problem of chip is alleviated greatly, has reduced the luminous loss that the light portion of being excited to send because of fluorophor gets into chip again and caused simultaneously; The organic coating that simultaneously contains fluorophor in the light-emitting device is away from the LED blue chip, so the degradation problem can effectively be alleviated under the emission wavelength drift that causes because of the device heat dissipation problem of fluorophor and the luminous intensity.
Claims (10)
1. White LED light-emitting device; It is characterized in that; Comprise base, blue-light LED chip, reflection shield and contain the transparency carrier of fluorescent coating, the two ends of reflection shield connect base and substrate respectively, and the reflection shield internal reflection surface is provided with reflector layer; Blue-light LED chip is arranged on seating plane has the one side of fluorescent coating to transparency carrier, and the contact conductor of blue-light LED chip passes base; Wherein blue-light LED chip is the chip of single chips, one group of series, parallel or series-parallel connection.
2. White LED light-emitting device according to claim 1 is characterized in that reflection shield is cylindrical, and base and transparency carrier are respectively as said columniform two bottom surfaces; Or reflection shield is reverse frustoconic or bowl-type, and base is gone to the bottom or the bowl end as the rounding platform, and transparency carrier is as the upper base of reverse frustoconic or be positioned at the position of the rim of a bowl.
3. White LED light-emitting device according to claim 1; It is characterized in that; Wherein reflection shield is cuboid or chamfered edge platform shape, and base is as going to the bottom of cuboid or going to the bottom of chamfered edge platform shape, and transparency carrier is as the upper base of cuboid or the upper base or the lid of chamfered edge platform shape.
4. White LED light-emitting device according to claim 1; It is characterized in that; Wherein reflection shield is half-cylindrical, and base is along the straight line setting, and this straight line is parallel with semi-cylindrical rectangular surfaces; And this straight line drops on through in axis of a cylinder and the plane vertical with semicircular rectangular surfaces, and transparent planar substrate is as semi-cylindrical rectangular surfaces.
5. White LED light-emitting device according to claim 1 is characterized in that wherein the cross section contour of reflection shield is parabolic type, and base is along the straight line setting, and this straight line overlaps with paraboloidal focal line, and transparency carrier is as the lid of reflection shield.
6. White LED light-emitting device according to claim 1; It is characterized in that; Wherein reflection shield is elongated cuboid or chamfered edge platform shape, and base is gone to the bottom as elongated cuboid or chamfered edge platform shape, and transparent cylindrical substrate is as the lid of elongated cuboid or chamfered edge platform shape.
7. according to the described White LED light-emitting device of one of claim 1-6, it is characterized in that substrate wherein is plane, cylindrical, sphere, hyperboloid, ellipsoid, paraboloidal convex surface; Or the outline line in the cross section of substrate is the part of circular arc, parabola, hyperbola, ellipse or other camber line.
8. according to the described White LED light-emitting device of one of claim 1-7; It is characterized in that the fluorescent coating fluorophor is the LED green emitting phosphor of LED yellow fluorescent powder, arbitrary proportion and mixture or the LED yellow fluorescent powder of arbitrary proportion and the mixture of LED red fluorescence powder of LED red fluorescence powder.
9. White LED light-emitting device according to claim 8 is characterized in that, comprise fluorescent coating and adopt 2 layers of coating structure, and every layer coating layer thickness is 3 microns to 5 millimeters; The fluorophor of wherein above-mentioned 2 layers of coating structure is respectively LED green emitting phosphor and LED red fluorescence powder, or is respectively LED yellow fluorescent powder and LED red fluorescence powder.
10. according to the described White LED light-emitting device of one of claim 1-9, it is characterized in that, be provided with keyset or adapter ring between reflection shield and the transparency carrier; Transparency carrier is the resin plate of fluorescent material filling or the glass plate of fluorescent material sintering.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296271.7A CN102810537B (en) | 2012-08-17 | 2012-08-17 | White LED light-emitting device |
| PCT/CN2013/074279 WO2014026486A1 (en) | 2012-08-17 | 2013-04-16 | Led light-emitting device for white light |
| US14/376,413 US9490402B2 (en) | 2012-08-17 | 2013-04-16 | LED light-emitting device for white light |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210296271.7A CN102810537B (en) | 2012-08-17 | 2012-08-17 | White LED light-emitting device |
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| CN102810537A true CN102810537A (en) | 2012-12-05 |
| CN102810537B CN102810537B (en) | 2016-03-09 |
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| CN201210296271.7A Active CN102810537B (en) | 2012-08-17 | 2012-08-17 | White LED light-emitting device |
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| CN103489857A (en) * | 2013-09-06 | 2014-01-01 | 殷江 | White light LED light-emitting device |
| WO2014026486A1 (en) * | 2012-08-17 | 2014-02-20 | Qian Zhiqiang | Led light-emitting device for white light |
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| CN1836339A (en) * | 2002-08-30 | 2006-09-20 | 吉尔科有限公司 | Light emitting diode with improved effience |
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| WO2014026486A1 (en) * | 2012-08-17 | 2014-02-20 | Qian Zhiqiang | Led light-emitting device for white light |
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| CN102810537B (en) | 2016-03-09 |
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