Title:
LED LIGHTING DEVICE FOR STRENGTHENING STABILITY OF RADIATION INTENSITY
Document Type and Number:
WIPO Patent Application WO/2013/111963
Kind Code:
A1
Abstract:
Disclosed is an LED lighting device for strengthening the stability of radiation intensity. The LED lighting device according to the present invention comprises: an LED light-emitting block connected to rectified voltage and having at least one LED module, wherein a tap is formed at the cathode terminal of at least one LED module; a fluctuation reference voltage generation block which detects the rectified voltage to generate a fluctuation reference voltage, wherein the fluctuation reference voltage has a voltage level based on the effective value of the rectified voltage; and a switching block connected to the tap for driving in such a manner as to constitute a closed circuit including at least one LED module up to the tap, wherein the amount of current flowing in the closed circuit is controlled by the fluctuation reference voltage and is controlled so as to have a negative correlation with the effective value of the rectified voltage. According to the LED lighting device of the present invention, a decrease in brightness uniformity caused by an unstable supply of input power is addressed.
Inventors:
HAN JAE DUK (KR)
Application Number:
PCT/KR2013/000523
Publication Date:
August 01, 2013
Filing Date:
January 23, 2013
Export Citation:
Assignee:
TLI INC (KR)
HAN JAE DUK (KR)
HAN JAE DUK (KR)
International Classes:
H05B37/02; F21V23/00; H05B44/00
Foreign References:
| JP2008059811A | 2008-03-13 | |||
| JP2006244848A | 2006-09-14 | |||
| KR20110090201A | 2011-08-10 | |||
| KR20090083782A | 2009-08-04 |
Attorney, Agent or Firm:
KWAK, DEOG YOUNG (KR)
곽덕영 (KR)
곽덕영 (KR)
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Claims: