Title:
LED LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/139290
Kind Code:
A1
Abstract:
An LED light-emitting device includes a first LED light-emitting unit (14), a second LED light-emitting unit (15), an LED driving unit (11), a transformer unit (12), a half-wave rectificating unit (13) and a constant current source unit (16). The cathode end of the first LED light-emitting unit is connected to the anode end of the second LED light-emitting unit. The inputting end of the constant current source unit is connected to the cathode end of the second LED light-emitting unit. The outputting end of the constant current source unit is connected to the negative outputting end of the half-wave rectificating unit. The adjusting end of the constant current source unit is connected to the cathode end of the first LED light-emitting unit. The light-emitting device has the advantages of concise circuit design, lower cost, reducing volume and saving power dissipation.
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Inventors:
WEN MAOQIANG (CN)
Application Number:
PCT/CN2011/072767
Publication Date:
October 18, 2012
Filing Date:
April 14, 2011
Export Citation:
Assignee:
SHENZHEN CYT OPTO ELECTRONIC TECHNOLOGY CO LTD (CN)
WEN MAOQIANG (CN)
WEN MAOQIANG (CN)
International Classes:
F21S2/00; F21V23/00; H05B37/00; F21Y101/02
Foreign References:
| CN102141204A | 2011-08-03 | |||
| CN201467523U | 2010-05-12 | |||
| CN101998730A | 2011-03-30 | |||
| CN101861023A | 2010-10-13 | |||
| CN101600275A | 2009-12-09 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)
深圳中一专利商标事务所 (CN)
深圳中一专利商标事务所 (CN)
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Claims: