LED LIGHTING DEVICE INCLUDING A SURPLUS LIGHT-EMITTING BLOCK

WIPO Patent Application WO/2012/091359

A3

The present invention relates to an LED lighting device including a surplus light-emitting block in addition to a general LED light-emitting block, in which the surplus light-emitting block is not turned on at the designed centered voltage, and is turned on at a voltage higher than the designed centered voltage. To this end, according to the present invention, the LED lighting device including a surplus light-emitting block includes: a rectifier circuit for rectifying AC voltage and converting it to rectified DC voltage; at least one LED light-emitting block; a load where the LED light-emitting blocks are connected in series; a switch block including a switch for bypassing the current which flows in each of the LED light-emitting blocks; a current source for adjusting the current supplied to the LED light-emitting block; a controller for calculating the designed current value on the basis of the AC voltage and providing the calculated designed current value to the control signal of the current source; and an extra surplus light-emitting block which is not turned on at the designed centered voltage, and is turned on at a voltage higher than the designed centered voltage.

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LEE DONG-WON (KR)

PCT/KR2011/009970

October 11, 2012

December 22, 2011

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LEE DONG-WON (KR)

H05B37/02

JP2007123562A	2007-05-17
KR100997050B1	2010-11-29
JP2010135473A	2010-06-17
KR100953754B1	2010-04-19

CHOI, Han-Sung (Daeho IR Bldg.1540-1, Seocho-Dong, Seocho-Gu, Seoul 137-872, KR)

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