CN102606898A - White LED (light emitting diode) light source with adjustable color temperature and application thereof - Google Patents
White LED (light emitting diode) light source with adjustable color temperature and application thereof Download PDFInfo
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- CN102606898A CN102606898A CN2011100276639A CN201110027663A CN102606898A CN 102606898 A CN102606898 A CN 102606898A CN 2011100276639 A CN2011100276639 A CN 2011100276639A CN 201110027663 A CN201110027663 A CN 201110027663A CN 102606898 A CN102606898 A CN 102606898A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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Abstract
The invention belongs to the field of optoelectronics, and discloses a white LED (light emitting diode) light source with adjustable color temperature and application of the white LED light source. The white LED light source comprises a substrate, a metal connection layer regularly arranged on the substrate, a plurality of LED chips arranged on the metal connection layer, and a reflector having a sloped reflection surface and arranged at the edge of the substrate. The white LED light source also includes a convex lens with a flat bottom, wherein the flat bottom of the convex lens and the reflector form a vacuum light source cavity for accommodating the LED chips. The white LED light source also includes a plurality of heat tubes and a plurality of cooling fins, wherein the heat tubes are connected with the substrate; and the cooling fins are sheathed on the heat tubes. The white LED light source with adjustable color temperature solves the problems of nonuniform color temperature in the light source space, color temperature drift and so on.
Description
Technical field
The present invention relates to a kind of led light source structure, relate in particular to a kind of high reliability that is used to throw light on, high light-emitting rate and the adjustable white LED light source of colour temperature.The invention still further relates to a kind of light fixture that uses the adjustable white LED light source of colour temperature.
Background technology
Existing LED white light source sends blue light or purple light with blue or ultraviolet chip usually; On chip, apply corresponding phosphor powder layer again; The light that blue light that chip sends or purple light excited phosphor powder layer send mixes with remaining blue light or purple light; Can process the white light source of different-colour and colour rendering index, but the colour temperature and the colour rendering index of this white light source are can not be freely regulated.On the other hand; White light emitting diode that existing colour temperature is adjustable adopt blue chip and above the red light chips coating fluorescent powder layer prepare; Owing to receive some powder technical limitations up till now to cause the light source space color temperature distribution inhomogeneous, and because the glue mixed fluorescent powder often causes in the light source use optical attenuation serious and the colour temperature drift phenomenon is serious.In addition, phosphor powder layer coats blue chip and red light chips not only causes the use waste of fluorescent material, and causes the heat of chip generation to be difficult in time distributing from above.At last; Existing LED white light source through heat-conducting glue be fixed on heat sink on; Big and the easy ageing of the thermal resistance of heat-conducting glue own, cause the LED white light source in use the heat that produces of chip can not in time distribute, thereby cause led light source light decay and colour temperature drift in use seriously.
Summary of the invention
Based on the problems referred to above, the objective of the invention is to propose a kind ofly provides colour temperature simple in structure, that cost is low, the efficiency of light energy utilization is high, light efficiency is high adjustable white LED light source.
The white LED light source that a kind of colour temperature is adjustable; Comprise circular panel-shaped base body; Spaced surface at said matrix is provided with the number of metal articulamentum that rule is arranged, and said metal connecting layer is provided with some White-light LED chips or some monochromatic light led chips, and the led chip on the adjacent metal is different; Be provided with the reflector of ramped shaped reflecting surface in the edge of said matrix; This white LED light source also comprises the convex lens that have a planar base surface, and the planar base surface of these convex lens and said reflector form a vacuum light-source chamber, and this light-source chamber is used to install White-light LED chip and monochromatic light led chip; This white LED light source also comprises some heat pipes and some fin, and another surface of said heat pipe and matrix is affixed, and said fin is set on the said heat pipe.
The white LED light source that described colour temperature is adjustable, wherein, on the said matrix and place on the reflecting surface of vacuum light-source chamber part and said reflector one deck reflector layer is set respectively.
The white LED light source that described colour temperature is adjustable; Wherein, Said White-light LED chip and monochromatic light led chip are the setting of concentric circles array arrangement on said metal solder dish; And the identical led chip of arranging on the same circumference, the different led chip of arranging on the neighboring concentric circle, the spacing of metal connecting layer is 50 microns～5 millimeters.
The white LED light source that described colour temperature is adjustable; Wherein, Said White-light LED chip and monochromatic light led chip radially are fan-shaped array arrangement setting by different-diameter on said metal solder dish; And the identical led chip of arranging on the same diameter, the different led chip of arranging on the adjacent diameter, the angle that the adjacent metal articulamentum constitutes is 30～45 °.
The white LED light source that described colour temperature is adjustable, wherein, the profile of said convex lens structure is the spherical crown shape or the longitudinal cross-section is the bowl-shape of back-off.
The white LED light source that described colour temperature is adjustable, wherein, said convex lens are glass lens or quartz lens.
The white LED light source that described colour temperature is adjustable, wherein, said matrix is pottery or metal heat sink.
The white LED light source that described colour temperature is adjustable wherein, adopts the parallel connection or the mode that is connected in series between some the said White-light LED chips; Adopt the parallel connection or the mode that is connected in series between some the said monochromatic light led chips; Adopt the parallelly connected or mode that is connected in series between said White-light LED chip 5 and the said monochromatic light led chip 4.
The white LED light source that colour temperature provided by the invention is adjustable adopts White-light LED chip, with respect to existing mixed layer at institute's compositing chip surface applied fluorescent material and glue, has the following advantages:
1, problems such as the inhomogeneous and colour temperature drift of light source space colour temperature have been overcome;
2, reduce the thermal resistance of led chip light-emitting area, above chip, distribute, reduced the junction temperature of led chip, thereby improve the reliability of light source use and prolonged service life of light source thereby help the heat that chip produces to surrounding environment.
Description of drawings
Fig. 1 a and 1b are the luminous component structural representations of the adjustable white LED light source of colour temperature of the present invention;
Fig. 2 a and 2b are the welded disc structural representations of the adjustable white LED light source of colour temperature of the present invention;
Fig. 3 is the perspective view of the adjustable white LED light source of colour temperature of the present invention;
Fig. 4 is the structural representation of the adjustable white LED light source of colour temperature of the present invention;
Specific embodiment
The adjustable white LED light source of a kind of colour temperature provided by the invention comprises circular panel-shaped base body, and this matrix can be ceramic material or metal heat sink matrix; A surface applying at matrix is provided with metal connecting layer, on said metal connecting layer, is arranged at intervals with some White-light LED chips or some monochromatic light led chips, and the led chip on the adjacent metal is different; Be provided with the reflector of ramped shaped reflecting surface in the edge of matrix; This white LED light source also comprises the convex lens that have a planar base surface; And the planar base surface of these convex lens and reflector form a vacuum light-source chamber, and this light-source chamber is used to install White-light LED chip and monochromatic light led chip; This white LED light source also comprises some heat pipes and some fin, and another surface of heat pipe and matrix is affixed, and some fin-shaped fin equidistantly are set on the heat pipe, and perpendicular as doing with matrix, fin and heat pipe are perpendicular.
Be to increase reflecting effect,, one deck reflector layer is set respectively on the matrix and place on the reflecting surface of vacuum light-source chamber part and reflector.
In the above-mentioned white LED light source; Metal connecting layer is the setting of concentric circles array arrangement on matrix; And the identical led chip of arranging on the same metal connecting layer; Like White-light LED chip or monochromatic light led chip, the different led chip of arranging on the adjacent metal articulamentum, and the spacing of adjacent metal articulamentum is 50 microns～5 millimeters; Perhaps; White-light LED chip and monochromatic light led chip radially are fan-shaped array arrangement setting by different-diameter on said metal connecting layer; And the identical led chip of arranging on the same metal connecting layer; Like White-light LED chip or monochromatic light led chip, the different led chip of arranging on the adjacent metal articulamentum, and the angle that metal connecting layer constitutes is 30～45 °.
Above-mentioned white LED light source, in order to improve light efficiency, convex lens adopt the profile structure to be the convex lens of spherical crown shape, and perhaps the longitudinal cross-section is the bowl-shape convex lens of back-off, and convex lens are selected quartz lens or glass lens for use.Said convex lens also can have different forms, have each chip top all with the design of a lenslet such as convex lens.The convex lens of high transmission rate agree with the reflecting layer at the bottom of the vacuum light-source chamber well, so that obtain maximum light extraction efficiency and effective luminous intensity distribution.
Adopt series, parallel or series and parallel connected mode to arrange respectively between all White-light LED chips and between all monochromatic light led chips; And adopt parallelly connected between said White-light LED chip and the said monochromatic light led chip or be connected in series; Just its luminous intensity be can control through regulating external power, thereby the different colour temperatures and the white light of colour rendering index obtained.
The white LED light source that colour temperature provided by the invention is adjustable; Its led chip employing White-light LED chip (as; Cold white chip or positive white chip) and the monochromatic light led chip (as; Red light chips), through regulating the luminous strength ratio of White-light LED chip and monochromatic light led chip, can realize high brightness more, more high reliability, more long-life and the super high power warm white source that do not have colour temperature to drift about.Simultaneously, this white LED light source has solved technical barriers such as the warm white source colour temperature drift of present technology, low reliability more effectively.
This white LED light source can be used for street lamp, substitutes present existing high-pressure mercury lamp, also can be used for room lighting, energy savings environmental protection simultaneously.
The adjustable white LED light source of described super high power colour temperature utilizes heat pipe to concentrate heat radiation, can effectively reduce junction temperature of chip, thus the white light source that obtains high reliability, long-life and do not have colour temperature to drift about.This super high power high reliability colour temperature tunable light source can be used for street lamp; Warehouse lamp and oil station or the like substitute existing high-pressure mercury lamp, Metal halogen lamp etc., in the time of energy-conservation and environmental protection; Also have the relatively colour temperature design-adjustable of hommization in addition, this is the not available advantage of conventional light source.Especially said invention super high power colour temperature scalable white light source can use separately, also can be used as single module, thereby integrated a plurality of module can be realized more powerful high reliability colour temperature adjustable white light illumination.
Below in conjunction with accompanying drawing, further explain is done in preferred embodiment of the present invention.
Embodiment 1
Like Fig. 1 a, 2a, shown in 3 and 4; The white LED light source that a kind of colour temperature is adjustable; Adopt circular flat ceramic matrix 1, be fitted with several rules at interval at the upper surface of matrix 1 and arrange and be concentric circles distributed and arranged metal connecting layer 2, the spacing distance of adjacent metal articulamentum 2 is 50 microns.On each metal connecting layer 2, be welded with some White-light LED chips 5 or some monochromatic light led chips 4, and same led chip adopts and to be connected in series, the different LED chip adopts and is connected in series; Led chip on the same metal connecting layer 2 is connected in series like White- light LED chip 5 or 4 employings of monochromatic light led chip; Adopt between the adjacent metal articulamentum 2 and be connected in parallel.Be connected with an annular reflex body 3 in the edge of matrix 1, the reflecting surface 32 of this reflector 3 is smooth tapered plane or oblique cambered surface; White LED light source also comprises spherical crown shape convex lens 6; These convex lens 6 are the quartz lens of 5 millimeters thick for center thickness; And its planar base surface 61 edges are fixed on the ladder boss 31 on the emitter 3; Form a vacuum light-source chamber 7 between said lens 61, reflector 3 and the matrix 1, White-light LED chip 5 installs in this vacuum light-source chamber 7 with 4 of monochromatic light led chips.This white LED light source also comprises some heat pipes 8 and some fin 9; Heat pipe 8 is affixed with another surface of matrix 1; And the fin 9 of some fin-shapeds equidistantly is set on the heat pipe 8; Heat pipe 8 is perpendicular with matrix 1, and fin 9 is perpendicular with heat pipe 8, perhaps adopts other mode to be provided with as required.
In order to improve light efficiency, the surface of the part 21 that is positioned at vacuum light-source chamber 7 at the reflecting surface 32 and the matrix 1 of reflector 3 is provided with one deck reflector layer.
Like Fig. 1 a, 2a, shown in 3 and 4, present embodiment 2 is with the difference of embodiment 1: the different led chip of arranging on the neighboring concentric circle (as, White-light LED chip 5 or monochromatic light led chip 4), and the spacing of neighboring concentric circle is 5 millimeters; And adopt between the adjacent metal articulamentum 2 and be connected in series.
Like Fig. 1 b, 2b, shown in 3 and 4, present embodiment 3 is with the difference of embodiment 1:
The heat sink matrix of matrix 1 circular flat metal of this white LED light source, convex lens 6 are 8 millimeters thick glass lens for center thickness, and the longitudinal cross-section of these convex lens 6 is the bowl structure of a back-off; Radially be fan-shaped array arrangement setting by different-diameter on the metal connecting layer 2 on the matrix 1, and the angle between the adjacent metal is 30 °; The identical led chip of arranging on the same metal connecting layer 2 is connected in parallel as adopting between White-light LED chip 5 or the monochromatic light led chip 4, adopts between all White-light LED chips 5 and all the monochromatic light led chips 4 to be connected in series.White LED light source among this embodiment adopts once high-power (like 10W) led chip of encapsulation, just can directly apply to street lamp without secondary light-distribution, thereby has improved the light extraction efficiency of whole small cup lamp effectively.
Like Fig. 1 b, 2b, shown in 3 and 4, present embodiment 4 is with the difference of embodiment 1: the identical led chip of arranging on the same metal connecting layer 2 is connected in parallel as adopting between White-light LED chip 5 or the monochromatic light led chip 4; Angle between the adjacent metal is 45 °; And adopt between the adjacent metal articulamentum 2 and be connected in series.。
Should be understood that above-mentioned statement to preferred embodiment of the present invention is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. white LED light source that colour temperature is adjustable; It is characterized in that this white LED light source comprises circular panel-shaped base body, be provided with the number of metal articulamentum that rule is arranged at the spaced surface of said matrix; Said metal connecting layer is provided with some White-light LED chips or some monochromatic light led chips; Led chip on the adjacent metal is different, is provided with the reflector of ramped shaped reflecting surface in the edge of said matrix, and this white LED light source also comprises the convex lens that have a planar base surface; And the planar base surface of these convex lens and said reflector form a vacuum light-source chamber, and this light-source chamber is used to install White-light LED chip and monochromatic light led chip; This white LED light source also comprises some heat pipes and some fin, and another surface of said heat pipe and matrix is affixed, and said fin is set on the said heat pipe.
2. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that, on the said matrix and place on the reflecting surface of vacuum light-source chamber part and said reflector one deck reflector layer is set respectively.
3. the adjustable white LED light source of colour temperature according to claim 1; It is characterized in that; Be the setting of concentric circles array arrangement on the said metal connecting layer, and a kind of in arrange on the same circumference White-light LED chip or the monochromatic light led chip, the different led chip of arranging on the neighboring concentric circle.
4. the adjustable white LED light source of colour temperature according to claim 3 is characterized in that, the spacing of adjacent metal articulamentum is 50 microns～5 millimeters.
5. the adjustable white LED light source of colour temperature according to claim 1; It is characterized in that; Said White-light LED chip and monochromatic light led chip radially are fan-shaped array arrangement setting by different-diameter on said metal connecting layer; And the identical led chip of arranging on the same diameter, the different led chip of arranging on the adjacent diameter.
6. the adjustable white LED light source of colour temperature according to claim 5 is characterized in that, the angle that the adjacent metal articulamentum constitutes is 30～45 °.
7. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that, the profile structure of said convex lens is the spherical crown shape or the longitudinal cross-section is the bowl-shape of back-off.
8. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that said convex lens are glass lens or quartz lens.
9. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that said matrix is pottery or metal heat sink.
10. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that, adopts the parallel connection or the mode that is connected in series between some the said White-light LED chips; Adopt the parallel connection or the mode that is connected in series between some the said monochromatic light led chips; Adopt the parallelly connected or mode that is connected in series between said White-light LED chip 5 and the said monochromatic light led chip 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110027663.9A CN102606898B (en) | 2011-01-25 | 2011-01-25 | White LED (light emitting diode) light source with adjustable color temperature and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110027663.9A CN102606898B (en) | 2011-01-25 | 2011-01-25 | White LED (light emitting diode) light source with adjustable color temperature and application thereof |
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| Publication Number | Publication Date |
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| CN102606898A true CN102606898A (en) | 2012-07-25 |
| CN102606898B CN102606898B (en) | 2014-11-26 |
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| CN201110027663.9A Expired - Fee Related CN102606898B (en) | 2011-01-25 | 2011-01-25 | White LED (light emitting diode) light source with adjustable color temperature and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103175011A (en) * | 2013-03-27 | 2013-06-26 | 珠海市集利发展有限公司 | Area equal division symmetric type dimming light-emitting diode (LED) integrated light source |
| CN103883911A (en) * | 2014-04-11 | 2014-06-25 | 江苏达伦电子股份有限公司 | Heat-radiation type LED bulb lamp |
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| US20100103660A1 (en) * | 2008-10-24 | 2010-04-29 | Cree Led Lighting Solutions, Inc. | Array layout for color mixing |
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| CN103175011A (en) * | 2013-03-27 | 2013-06-26 | 珠海市集利发展有限公司 | Area equal division symmetric type dimming light-emitting diode (LED) integrated light source |
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| CN103883911A (en) * | 2014-04-11 | 2014-06-25 | 江苏达伦电子股份有限公司 | Heat-radiation type LED bulb lamp |
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| CN102606898B (en) | 2014-11-26 |
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Granted publication date: 20141126 Termination date: 20190125 |