Title:
LED LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/139293
Kind Code:
A1
Abstract:
An LED light-emitting device is provided, comprising: a plurality of LED light-emitting units (3) cascaded connected, which comprises LED light-emitting modules; and a constant current source power supply unit (2) connecting with one of the plurality of the LED light-emitting units (3); the constant current source power supply unit (2) is used for supplying a constant current for the LED light-emitting unit (3) connected with it, and other LED light-emitting units (3) obtain the constant current from their respective proceeding stages and supply the constant current for their respective following stages; the LED light-emitting units (3) transform the constant current received to the constant current required by every LED for light-emitting in their corresponding LED light-emitting modules to drive their corresponding LED light-emitting modules illuminating. The present invention realizes a cascaded transmission of power supply for a plurality of LED light-emitting units (3) and presents the advantages of simple design of circuit and less cost, comparing with the power supply means in the prior art using an LED light-emitting device with a plurality of LED light-emitting modules.
Inventors:
WEN MAOQIANG (CN)
Application Number:
PCT/CN2011/072781
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; H05B44/00; F21V23/00; H05B37/02; F21Y101/02
Domestic Patent References:
| WO2010055456A1 | 2010-05-20 |
Foreign References:
| CN102141202A | 2011-08-03 | |||
| CN101783116A | 2010-07-21 | |||
| JP2005167406A | 2005-06-23 |
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)
Download PDF:
Claims: