CN102691914A - Alternating current power supply driven LED light-emitting device - Google Patents
Alternating current power supply driven LED light-emitting device Download PDFInfo
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- CN102691914A CN102691914A CN2012101784017A CN201210178401A CN102691914A CN 102691914 A CN102691914 A CN 102691914A CN 2012101784017 A CN2012101784017 A CN 2012101784017A CN 201210178401 A CN201210178401 A CN 201210178401A CN 102691914 A CN102691914 A CN 102691914A
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- led
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- bridge rectifier
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- rectifier circuit
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Abstract
The invention discloses an alternating current power supply driven LED light-emitting device which comprises a rectifier circuit, a radiator and high-voltage LED chipsets. The rectifier circuit is a bridge rectifier circuit formed by connecting four high voltage LED chipsets. Three low-power high voltage LED chips are serially connected to a branch of the bridge rectifier circuit to achieve regulation of color temperature. Two high-voltage LED sets are serially connected between output ends of the bridge rectifier circuit, so that high-quality white light can be obtained. A current-limiting resistor R is connected to an output end of the bridge rectifier circuit, and accordingly the low-power LED chips are protected, and burnout of the LED chips is avoided. The alternating current power supply driven LED light-emitting device has the advantages of simple structure, convenience to manufacture, high conversion rate, long service life, high radiating performance and the like.
Description
Technical field
The present invention relates to LED luminous lighting field, particularly a kind of LED light-emitting device that drives with AC power.
Background technology
Along with the development of lighting engineering, with light emitting diode (LED) be representative the 4th generation light source, because of it has the luminous flux height, structure is small and exquisite, security performance is high and many advantages such as high energy saving, become the best light source that substitutes the traditional lighting light source and selected.
Most in the market LED light-emitting devices all can only use dc source to drive; Yet; The power supply that we use in the daily life all is an alternating current, converts alternating current into direct current that LED can use, has so not only increased the application cost of LED light-emitting device if will use the LED light-emitting device often need increase Switching Power Supply; And the increase additional energy consumption, also disagree with the energy-conservation purpose of design of LED.
Summary of the invention
Problem to existing in the above-mentioned prior art the objective of the invention is: the luminous and rectification double grading of utilizing LED to have provides a kind of LED light-emitting device that drives with AC power to address the above problem.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of LED light-emitting device that drives with AC power comprises rectification circuit, radiating piece and led chip group; The bridge rectifier that said rectification circuit is connected to form by 4 high-voltage LED chipsets.
As preferred version, 3 low-power LED chips of series connection on the branch road of said bridge rectifier, thus the purpose of colour temperature is regulated in realization.
As preferred version, 2 high-voltage LED chipsets of series connection between the output of said bridge rectifier, thus obtain high-quality white light source.
As preferred version, the output of said bridge rectifier connects a current-limiting resistance R, thereby reaches the purpose of protection low-power LED chip, avoids burning out led chip.
The invention has the beneficial effects as follows: the present invention just can realize directly passing through AC power driving LED light-emitting device through this bridge rectifier, and circuit structure is simple owing to adopted 4 bridge rectifiers that the high-voltage LED chipset is formed; With low cost; Can also obtain high-quality white light source, simultaneously, the present invention is provided with current-limiting resistance in circuit; Thereby make security performance higher, the damage of having avoided led chip to cause because of overload.It is simple in structure, easily manufactured that the present invention possesses, and conversion efficiency is high, advantages such as long service life, perfect heat-dissipating.
Description of drawings
Fig. 1 is the embodiment of the present invention circuit diagram.
The specific embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.
Shown in accompanying drawing 1, a kind of LED light-emitting device that drives with AC power comprises rectification circuit, radiating piece and high-voltage LED chipset, the bridge rectifier that said rectification circuit is connected to form by 4 high-voltage LED chipsets.3 low-power high-voltage led chips of series connection on the branch road of said bridge rectifier, thus the purpose of colour temperature is regulated in realization.2 high-voltage LED chipsets of series connection between the output of said bridge rectifier, thus high-quality white light source obtained.The output of said bridge rectifier connects a current-limiting resistance R, thereby reaches the purpose of protection low-power LED chip, avoids burning out led chip.
Embodiment:
As shown in Figure 1; The bridge rectifier that high-voltage LED chipset B1, high-voltage LED chipset B2, high-voltage LED chipset B3 and high-voltage LED chipset B4 connect to form; The input of the said bridge rectifier current-limiting resistance R that connects connects low-power LED chip LED 1, low-power LED chip LED 2, low-power LED chip LED 3 and high-voltage LED chipset B6, high-voltage LED chipset B5 along current direction between the output of said bridge rectifier successively.After the energising, current-limiting resistance R, high-voltage LED chipset B4, low-power LED chip LED 1, low-power LED chip LED 2, low-power LED chip LED 3, high-voltage LED chipset B6, high-voltage LED chipset B5 and high-voltage LED chipset B2 constitute power circuit; High-voltage LED chipset B1, low-power LED chip LED 1, low-power LED chip LED 2, low-power LED chip LED 3, high-voltage LED chipset B6, high-voltage LED chipset B5 and high-voltage LED chipset B3 and current-limiting resistance R constitute power circuit.
The above-described preferred embodiment of utilizing specifies the present invention, and unrestricted scope of the present invention.Those skilled in the art can be through after reading the present invention; Make trickle change and adjustment; For example: the quantity that increases or reduce high-voltage LED chipset and led chip; Replacement schemes such as deletion or increase current-limiting resistance, the main idea of the present invention of will can yet be regarded as place does not also break away from the spirit and scope of the present invention.
Claims (4)
1. a LED light-emitting device that drives with AC power comprises rectification circuit, radiating piece and led chip group, it is characterized in that the bridge rectifier that said rectification circuit is connected to form by 4 high-voltage LED chipsets.
2. a kind of LED light-emitting device that drives with AC power as claimed in claim 1 is characterized in that, 3 low-power LED chips of series connection on the branch road of said bridge rectifier, thus the purpose of colour temperature is regulated in realization.
3. a kind of LED light-emitting device that drives with AC power as claimed in claim 1 is characterized in that, 2 high-voltage LED chipsets of series connection between the output of said bridge rectifier, thus obtain high-quality white light source.
4. a kind of LED light-emitting device that drives with AC power as claimed in claim 1 is characterized in that the output of said bridge rectifier connects a current-limiting resistance R, thereby reaches the purpose of protection low-power LED chip, avoids burning out led chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101784017A CN102691914A (en) | 2012-06-01 | 2012-06-01 | Alternating current power supply driven LED light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101784017A CN102691914A (en) | 2012-06-01 | 2012-06-01 | Alternating current power supply driven LED light-emitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102691914A true CN102691914A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101784017A Pending CN102691914A (en) | 2012-06-01 | 2012-06-01 | Alternating current power supply driven LED light-emitting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102691914A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100140655A1 (en) * | 2009-02-26 | 2010-06-10 | Wei Shi | Transparent heat spreader for leds |
| CN102340918A (en) * | 2011-10-22 | 2012-02-01 | 华南师范大学 | Alternating current LED (Light Emitting Diode) device |
| CN102506315A (en) * | 2011-10-22 | 2012-06-20 | 华南师范大学 | High-color-rendering-property light-emitting diode (LED) device |
-
2012
- 2012-06-01 CN CN2012101784017A patent/CN102691914A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100140655A1 (en) * | 2009-02-26 | 2010-06-10 | Wei Shi | Transparent heat spreader for leds |
| CN102340918A (en) * | 2011-10-22 | 2012-02-01 | 华南师范大学 | Alternating current LED (Light Emitting Diode) device |
| CN102506315A (en) * | 2011-10-22 | 2012-06-20 | 华南师范大学 | High-color-rendering-property light-emitting diode (LED) device |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |