CN102606900A - Color-temperature-adjustable white light emitting diode (LED) light source - Google Patents
Color-temperature-adjustable white light emitting diode (LED) light source Download PDFInfo
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- CN102606900A CN102606900A CN2011100277326A CN201110027732A CN102606900A CN 102606900 A CN102606900 A CN 102606900A CN 2011100277326 A CN2011100277326 A CN 2011100277326A CN 201110027732 A CN201110027732 A CN 201110027732A CN 102606900 A CN102606900 A CN 102606900A
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Abstract
The invention belongs to the photoelectronic field, which discloses a color-temperature-adjustable white light emitting diode (LED) light source. The white LED light source comprises a round plate-like substrate, two metal connection layers arranged in an intermediate region of the substrate surface at an interval, a white LED chip and a single-color LED chip arranged on each metal connection layer, and a reflector having an inclined reflection surface and arranged at an edge of the substrate. The white LED light source further comprises a convex lens having a flat bottom. The flat bottom forms a vacuum light source chamber with the reflector. The light source chamber is used for accommodating the white LED chips and the single-color LED chips. The inventive color-temperature-adjustable white light emitting diode (LED) light source overcomes the problems of nonuniform color temperature and color temperature shift; meanwhile, the invention reduces heat resistance of light emitting surfaces of the LED chips to ambient environment, so as to facilitate dissipation of heat generated by the LED chips from the LED chips, thereby prolonging the service life of the light source.
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.
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; A surface at matrix is provided with a metal connecting layer, is arranged at intervals with two metal connecting layer in the central region of said matrix, on each metal connecting layer, is respectively equipped with White-light LED chip and monochromatic light led chip; 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.
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 metal connecting layer is arranged on the center of said light-source chamber.
The white LED light source that described colour temperature is adjustable, wherein, the profile of said convex lens structure is the spherical crown shape.
The white LED light source that described colour temperature is adjustable, wherein, the longitudinal cross-section of said convex lens is the bowl-shape of back-off.
The white LED light source that described colour temperature is adjustable, wherein, the spacing distance of said metal connecting layer is 80~200 millimeters.
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, the connected mode between said White-light LED chip and the monochromatic light led chip is for being connected in series.
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 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 is the structural representation of the adjustable white LED light source of a kind of colour temperature among the embodiment 1;
Fig. 2 is the structural representation of the adjustable white LED light source of a kind of colour temperature among the embodiment 2;
Fig. 3 is the matrix surface 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 surperficial central region of matrix fit at interval be provided with two be used to weld led chip (as; White-light LED chip and monochromatic light led chip) metal connecting layer; And the metal connecting layer spacing distance is 80~200 microns, on each metal connecting layer, is welded with a White-light LED chip and a monochromatic light led chip respectively; White-light LED chip adopts serial or parallel connection to be connected with the monochromatic light led chip; 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 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.
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.
Above-mentioned white LED light source, preferable alloy articulamentum are arranged on the matrix and are positioned at the center of light-source chamber.
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.
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.
Below in conjunction with accompanying drawing, further explain is done in preferred embodiment of the present invention.
Embodiment 1
As shown in figs. 1 and 3; The white LED light source that a kind of colour temperature is adjustable; Adopt circular flat ceramic matrix 1; Be provided with two metal connecting layer 2 at a distance from 200 microns applyings in that the upper surface middle part of matrix 1 is interregional, on each metal connecting layer 2, be welded with a White-light LED chip 5 respectively and monochromatic light led chip 4, two LEDs chips adopt the mode of being connected in series to link together; 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; 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.
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 articulamentum 2 of reflector 3 is provided with one deck reflector layer.
Shown in Fig. 2 and 3, present embodiment 2 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 center thickness 8 millimeters thick glass lens, and the longitudinal cross-section of these convex lens 6 is the bowl structure of a back-off; Two metal connecting layer 2 are spaced apart 80 microns, and White-light LED chip 5 adopts with monochromatic light led chip 4 and is connected in parallel.White LED light source among this embodiment adopts the high-power 1W or the 5WLED chip that once encapsulate, just can directly apply to street lamp without secondary light-distribution, thereby has improved the light extraction efficiency of whole small cup lamp effectively.
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, is arranged at intervals with two metal connecting layer in the central region of said matrix surface, on each said metal connecting layer, is respectively equipped with White-light LED chip and monochromatic light led chip; 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.
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 is characterized in that said metal connecting layer is arranged on the center of said light-source chamber.
4. 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.
5. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that the longitudinal cross-section of said convex lens is the bowl-shape of back-off.
6. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that the spacing distance of said metal connecting layer is 80~200 millimeters.
7. 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.
8. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that the connected mode between said White-light LED chip and the monochromatic light led chip is for being connected in series.
9. the adjustable white LED light source of colour temperature according to claim 1 is characterized in that the connected mode between said White-light LED chip and the monochromatic light led chip is for being connected in parallel.
10. 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.
Priority Applications (1)
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CN201110027732.6A CN102606900B (en) | 2011-01-25 | 2011-01-25 | Color-temperature-adjustable white light emitting diode (LED) light source |
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CN201110027732.6A CN102606900B (en) | 2011-01-25 | 2011-01-25 | Color-temperature-adjustable white light emitting diode (LED) light source |
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CN102606900A true CN102606900A (en) | 2012-07-25 |
CN102606900B CN102606900B (en) | 2014-07-23 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10650782B2 (en) | 2017-06-19 | 2020-05-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and device for adjusting color temperature of screen, and electronic device |
CZ309539B6 (en) * | 2020-12-17 | 2023-03-29 | Hynek Medřický | White light fixture for daily activities, regenerating the retina of the eye in real time, which is damaged by blue light |
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JP2007214522A (en) * | 2006-02-10 | 2007-08-23 | Intekkusu Kk | Light source device and illuminator using same |
US20080054284A1 (en) * | 2006-09-01 | 2008-03-06 | Hussell Christopher P | Encapsulant Profile for Light Emitting Diodes |
CN101496186A (en) * | 2006-07-31 | 2009-07-29 | 3M创新有限公司 | LED source with hollow collection lens |
CN201327844Y (en) * | 2008-12-02 | 2009-10-14 | 苏州久腾光电科技有限公司 | Package structure of surface-mount LED module |
CN201382289Y (en) * | 2009-05-06 | 2010-01-13 | 南京汉德森科技股份有限公司 | Light source structure of mixed light formed warm white LED source |
CN201487612U (en) * | 2009-08-18 | 2010-05-26 | 深圳市众明半导体照明有限公司 | Warm white LED light source with high-brightness and high color rendering index |
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2011
- 2011-01-25 CN CN201110027732.6A patent/CN102606900B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007214522A (en) * | 2006-02-10 | 2007-08-23 | Intekkusu Kk | Light source device and illuminator using same |
CN101496186A (en) * | 2006-07-31 | 2009-07-29 | 3M创新有限公司 | LED source with hollow collection lens |
US20080054284A1 (en) * | 2006-09-01 | 2008-03-06 | Hussell Christopher P | Encapsulant Profile for Light Emitting Diodes |
CN201327844Y (en) * | 2008-12-02 | 2009-10-14 | 苏州久腾光电科技有限公司 | Package structure of surface-mount LED module |
CN201382289Y (en) * | 2009-05-06 | 2010-01-13 | 南京汉德森科技股份有限公司 | Light source structure of mixed light formed warm white LED source |
CN201487612U (en) * | 2009-08-18 | 2010-05-26 | 深圳市众明半导体照明有限公司 | Warm white LED light source with high-brightness and high color rendering index |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10650782B2 (en) | 2017-06-19 | 2020-05-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and device for adjusting color temperature of screen, and electronic device |
CZ309539B6 (en) * | 2020-12-17 | 2023-03-29 | Hynek Medřický | White light fixture for daily activities, regenerating the retina of the eye in real time, which is damaged by blue light |
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CN102606900B (en) | 2014-07-23 |
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