Title:
LED DRIVING CIRCUIT, LAMP TUBE AND ILLUMINATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/196984
Kind Code:
A1
Abstract:
Provided are an LED driving circuit, a lamp tube and an illumination apparatus. The LED driving circuit comprises: a first alternating-current input end, a second alternating-current input end, a driving module (100), a first protection unit (200), a first direct-current output end and a second direct-current output end, wherein the first protection unit (200) comprises a voltage measurement subunit (210) and an anomaly cut-off subunit (220); the voltage measurement subunit (210) is connected in parallel between two corresponding voltage nodes in the driving module (100); the voltage measurement subunit (210) is used for measuring a voltage value of the driving module (100); the anomaly cut-off subunit (220) is connected in series between a second input end of the driving module (100) and the second alternating-current input end; and the first protection unit (200) is used for disconnecting a loop of the driving module (100) when a voltage anomaly of the driving module (100) is detected. Compared with the prior art, the present invention improves the safety of an LED driving circuit and thus improves the safety of an illumination apparatus.
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Inventors:
ZHOU JIAMING (CN)
PU JIZHONG (CN)
GAN CAIYING (CN)
ZHAO YIJIAO (CN)
PU JIZHONG (CN)
GAN CAIYING (CN)
ZHAO YIJIAO (CN)
Application Number:
PCT/CN2021/079523
Publication Date:
October 07, 2021
Filing Date:
March 08, 2021
Export Citation:
Assignee:
CH LIGHTING TECH CO LTD (CN)
International Classes:
H05B45/59; H05B45/325
Foreign References:
| CN111343759A | 2020-06-26 | |||
| CN104812122A | 2015-07-29 | |||
| CN204376381U | 2015-06-03 | |||
| CN110753421A | 2020-02-04 | |||
| US5485059A | 1996-01-16 | |||
| CN110798927A | 2020-02-14 | |||
| CN104682338A | 2015-06-03 | |||
| CN201860487U | 2011-06-08 | |||
| CN203553897U | 2014-04-16 | |||
| CN101420121A | 2009-04-29 |
Attorney, Agent or Firm:
HEXIN INTELLECTUAL PROPERTY FIRM (CN)
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