CN203327345U - COB (Chip on Board) light source device with automatic color temperature adjustment - Google Patents
COB (Chip on Board) light source device with automatic color temperature adjustment Download PDFInfo
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- CN203327345U CN203327345U CN2013204673637U CN201320467363U CN203327345U CN 203327345 U CN203327345 U CN 203327345U CN 2013204673637 U CN2013204673637 U CN 2013204673637U CN 201320467363 U CN201320467363 U CN 201320467363U CN 203327345 U CN203327345 U CN 203327345U
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Abstract
The utility model relates to a COB light source device with automatic color temperature adjustment. The light source device comprises a substrate, forward LED (Light-Emitting Diode) chips, reverse LED chips, a power supply manager and a power supply module. The substrate is equipped with wafer solidifying positions; the anode and cathode of the forward LED chip are respectively connected with the positive end and the negative end of the wafer solidifying position, the anode and cathode of the reverse LED chip are respectively connected with the negative end and the positive end of the wafer solidifying position, and the forward LED chip and the reverse LED chip are respectively covered by a warm-white fluorescent layer and a cold-white fluorescent layer; two voltage ends of the power supply module are respectively connected with the positive end and the negative end of each wafer solidifying position, and the power supply module is used for outputting a pulse voltage; and the power supply manager is used for controlling the duty ratio of the pulse voltage output by the power supply module. According to the utility model, light modulation is continuously carried out on a blackbody radiation curve in a CIE-1931 chromaticity diagram, the light-modulation range of an LED light source is broadened, and it is ensured that color temperature within an illumination area of the LED light source is consistent.
Description
Technical field
The utility model relates to a kind of COB light supply apparatus of automatic color regulating temperature.
Background technology
The method for regulating temperature of existing COB light source lamp is, at same substrate, some warm whites source and some positive white light sources are installed, during use, power supply is given warm white source and the power supply of cold white light source simultaneously, regulate the brightness of warm white source or cold white light source by the size of current of regulating warm white source or cold white light source, and then the ratio of red light or blue light in the adjusting light source light spectrum, thereby realize the adjusting of colour temperature and chromaticity coordinates.The shortcoming of this kind of light modulation scheme is: the mixing of warm white and cold white light is regulated only can obtain required light in a very little zone, and the light adjustable range is little, can't continue light modulation along the black body radiation line of CIE-1931 chromatic diagram.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of COB light supply apparatus of automatic color regulating temperature, and its dimming scope is wide.
For achieving the above object, the utility model adopts following technical scheme:
A kind of COB light supply apparatus of automatic color regulating temperature, it comprises substrate, forward LED chip, reverse LED chip, power supervisor and power module;
This substrate is provided with some equally distributed die bonds position, each die bond position comprises positive terminal and negative pole end, the positive pole of forward LED chip and negative pole are connected respectively positive terminal and the negative pole end of this die bond position, oppositely the positive pole of LED chip and negative pole are connected respectively negative pole end and the positive terminal of this die bond position, forward LED chip and oppositely on LED chip, be coated with respectively warm white fluorescence coating and cold white fluorescent layer;
Two voltage ends of this power module connect respectively positive terminal and the negative pole end of each die bond position, and this power module is for exporting a pulse voltage, and this power supervisor is for the duty ratio of the pulse voltage controlling this power module and export.
Further, this forward LED chip and reverse LED chip form crisscross chip array.
Further, the every two adjacent LED chips that are positioned at same file are respectively forward LED chip and reverse LED chip.
Further, be positioned at the same every two adjacent LED chips of walking crosswise and be respectively forward LED chip and reverse LED chip.
Further, this warm white fluorescence coating and cold white fluorescent layer all are hemispherical.
Further, an annular recess is offered in the periphery of each die bond position.
Further, this forward LED chip and reverse LED chip are blue-light LED chip.
The beneficial effects of the utility model are as follows:
The forward LED chip of above-mentioned utility model and reverse LED chip are alternately luminous, and then alternately excite warm white fluorescence coating and cold white fluorescent layer, the time ratio that duty cycle adjustment warm white fluorescence coating and cold white fluorescent layer by regulating impulse voltage is excited, thereby can regulate the colour temperature of COB light source on a large scale, realization is at the blackbody radiance curve continuous light tuning of CIE-1931 chromatic diagram, increased the dimming scope of LED light source, also guaranteed that LED light source colour temperature in light area is consistent simultaneously.
The accompanying drawing explanation
The structural representation of the better embodiment of the COB light supply apparatus that Fig. 1 is the utility model automatic color regulating temperature.
The partial cutaway schematic of the COB light supply apparatus that Fig. 2 is Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
Refer to Fig. 1 and Fig. 2, the utility model relates to a kind of COB light supply apparatus of automatic color regulating temperature, and its better embodiment comprises substrate 10, forward LED chip 21, reverse LED chip 22, power supervisor and power module.
This substrate 10 is provided with some equally distributed die bonds position, each die bond position comprises positive terminal and negative pole end, the positive pole of forward LED chip 21 and negative pole are connected respectively positive terminal and the negative pole end of this die bond position, oppositely the positive pole of LED chip 22 and negative pole are connected respectively negative pole end and the positive terminal of this die bond position, forward LED chip 21 and oppositely on LED chip 22, be coated with respectively warm white fluorescence coating and cold white fluorescent layer.
Two voltage ends of this power module connect respectively positive terminal and the negative pole end of each die bond position, and this power module is for exporting a pulse voltage, and this power supervisor is for the duty ratio of the pulse voltage controlling this power module and export.
When the positive voltage of this power module voltage pulse output, forward LED chip 21 is all luminous, and oppositely LED chip 22 is all not luminous, otherwise, when the negative voltage of this power module voltage pulse output, forward LED chip 21 is not luminous, and it is all luminous, so, forward LED chip 21 and reverse LED chip 22 are alternately luminous, and then alternately excite warm white fluorescence coating and cold white fluorescent layer, the duty ratio of this power supervisor regulating impulse voltage, and then regulate the time ratio that warm white fluorescence coating and cold white fluorescent layer are excited, thereby can regulate the colour temperature of COB light source on a large scale, realization is at the blackbody radiance curve continuous light tuning of CIE-1931 chromatic diagram, increased the dimming scope of LED light source, also guaranteed that LED light source colour temperature in light area is consistent simultaneously.
The relation of colour temperature and Timing is as follows:
This forward LED chip 21 and reverse LED chip 22 form crisscross chip array.
The every two adjacent LED chips that are positioned at same file are respectively forward LED chip 21 and reverse LED chip 22, are positioned at the same every two adjacent LED chips of walking crosswise and are respectively forward LED chip 21 and reverse LED chip 22.
In the present embodiment, this warm white fluorescence coating and cold white fluorescent layer all are hemispherical, and other shapes have optical property preferably relatively, are conducive to improve optical parametric.This forward LED chip 21 and reverse LED chip 22 are blue-light LED chip.
An annular recess 30 is offered in the periphery of each die bond position, and this annular recess 30 draws fluorescent glue in polymerization naturally in the periphery of this LED chip 20, and then naturally is condensed into this hemispherical fluorescence coating, is conducive to improve some glue efficiency and Optimum Points glue effect.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and the distortion all should belong to the protection range of the utility model claim within.
Claims (7)
1. the COB light supply apparatus of an automatic color regulating temperature is characterized in that: it comprises substrate, forward LED chip, oppositely LED chip, power supervisor and power module;
This substrate is provided with some equally distributed die bonds position, each die bond position comprises positive terminal and negative pole end, the positive pole of forward LED chip and negative pole are connected respectively positive terminal and the negative pole end of this die bond position, oppositely the positive pole of LED chip and negative pole are connected respectively negative pole end and the positive terminal of this die bond position, forward LED chip and oppositely on LED chip, be coated with respectively warm white fluorescence coating and cold white fluorescent layer;
Two voltage ends of this power module connect respectively positive terminal and the negative pole end of each die bond position, and this power module is for exporting a pulse voltage, and this power supervisor is for the duty ratio of the pulse voltage controlling this power module and export.
2. the COB light supply apparatus of automatic color regulating temperature as claimed in claim 1 is characterized in that: this forward LED chip and oppositely LED chip form crisscross chip array.
3. the COB light supply apparatus of automatic color regulating temperature as claimed in claim 1 is characterized in that: the every two adjacent LED chips that are positioned at same file are respectively forward LED chip and reverse LED chip.
4. the COB light supply apparatus of automatic color regulating temperature as claimed in claim 3, is characterized in that: be positioned at the same every two adjacent LED chips of walking crosswise and be respectively forward LED chip and reverse LED chip.
5. the COB light supply apparatus of automatic color regulating temperature as claimed in claim 1, it is characterized in that: this warm white fluorescence coating and cold white fluorescent layer all are hemispherical.
6. the COB light supply apparatus of automatic color regulating temperature as claimed in claim 5, it is characterized in that: an annular recess is offered in the periphery of each die bond position.
7. the COB light supply apparatus of automatic color regulating temperature as claimed in claim 1 is characterized in that: this forward LED chip and oppositely LED chip be blue-light LED chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204673637U CN203327345U (en) | 2013-08-01 | 2013-08-01 | COB (Chip on Board) light source device with automatic color temperature adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204673637U CN203327345U (en) | 2013-08-01 | 2013-08-01 | COB (Chip on Board) light source device with automatic color temperature adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203327345U true CN203327345U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204673637U Expired - Lifetime CN203327345U (en) | 2013-08-01 | 2013-08-01 | COB (Chip on Board) light source device with automatic color temperature adjustment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263247A (en) * | 2015-11-26 | 2016-01-20 | 科博达技术有限公司 | Method of realizing tricolor LED lamp color gradual change and device thereof |
| CN105489531A (en) * | 2015-12-09 | 2016-04-13 | 华南师范大学 | COB (chips on board) die-bonding and wire-soldering system and method |
| CN107195758A (en) * | 2017-07-06 | 2017-09-22 | 庞绮琪 | LED chip with high transmission rate |
| CN107682969A (en) * | 2017-10-27 | 2018-02-09 | 深圳市银河风云网络系统股份有限公司 | A kind of light-dimming method and system |
-
2013
- 2013-08-01 CN CN2013204673637U patent/CN203327345U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263247A (en) * | 2015-11-26 | 2016-01-20 | 科博达技术有限公司 | Method of realizing tricolor LED lamp color gradual change and device thereof |
| CN105263247B (en) * | 2015-11-26 | 2017-07-18 | 科博达技术有限公司 | Realize the method and its device of three-primary color LED lamp color gradient |
| CN105489531A (en) * | 2015-12-09 | 2016-04-13 | 华南师范大学 | COB (chips on board) die-bonding and wire-soldering system and method |
| CN105489531B (en) * | 2015-12-09 | 2018-06-05 | 华南师范大学 | A kind of COB die bonds wire bonding system and method |
| CN107195758A (en) * | 2017-07-06 | 2017-09-22 | 庞绮琪 | LED chip with high transmission rate |
| CN107682969A (en) * | 2017-10-27 | 2018-02-09 | 深圳市银河风云网络系统股份有限公司 | A kind of light-dimming method and system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 510000 Room 201, building A4, No. 11, Kaiyuan Avenue, Huangpu District, Guangzhou, Guangdong Patentee after: Silicon energy photoelectric semiconductor (Guangzhou) Co.,Ltd. Address before: 510000 second floor, building A4, No. 11, Kaiyuan Avenue, Science City, Guangzhou high tech Industrial Development Zone, Guangzhou, Guangdong Province Patentee before: GUANGZHOU LEDTEEN OPTOELECTRONICS Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |