Title:
LED ILLUMINATION DEVICE CAPABLE OF OPEN/SHORT CIRCUIT PROTECTION AND ITS ILLUMINATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2010/130213
Kind Code:
A1
Abstract:
A LED illumination device capable of open/short circuit protection and its illumination circuit are provided. The LED illumination device comprises at least two light source modules (32, 42), at least two LED groups, a power supply (33, 43, 79), and multiple protecting elements. The LED groups are provided in the light source modules (32, 42) in one-to-one correspondence. Each LED group forms a loop independent of each other. Each LED group comprises multiple light emitting diodes (65) in series. The power supply (33, 43, 79) is connected with the LED groups separately for supplying constant currents for each LED group. The protecting elements are provided in the light source modules (32, 42). The number of the protecting elements corresponds to the number of the light emitting diodes (65), so as to ensure the normal operation of the other light emitting diodes (65) in the light source module (32, 42) in which a light emitting diode (65) is opened. The LED illumination device capable of open/short circuit protection and its illumination circuit can prolong the life of the LED illumination device and reduce the maintenance cost thereof.
Inventors:
CHEN KAI (CN)
ZHANG ZIQI (CN)
FU SHAOQIN (CN)
ZHAO YAJIE (CN)
ZHANG ZIQI (CN)
FU SHAOQIN (CN)
ZHAO YAJIE (CN)
Application Number:
PCT/CN2010/072713
Publication Date:
November 18, 2010
Filing Date:
May 13, 2010
Export Citation:
Assignee:
ZHEJIANG XIZI OPTOELECTRONIC T (CN)
CHEN KAI (CN)
ZHANG ZIQI (CN)
FU SHAOQIN (CN)
ZHAO YAJIE (CN)
CHEN KAI (CN)
ZHANG ZIQI (CN)
FU SHAOQIN (CN)
ZHAO YAJIE (CN)
International Classes:
F21S2/00; F21V17/00; F21V25/02; H02H9/02; F21Y101/02
Domestic Patent References:
| WO2010004661A1 | 2010-01-14 |
Foreign References:
| CN201386963Y | 2010-01-20 | |||
| CN201129641Y | 2008-10-08 | |||
| CN101290104A | 2008-10-22 | |||
| JP2002299695A | 2002-10-11 | |||
| US20080310162A1 | 2008-12-18 | |||
| CN201114864Y | 2008-09-10 | |||
| CN101551080A | 2009-10-07 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, CN)
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Claims:
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