Patent ID: 8766547
Filing Date: 2014-07-01
Classification: H05B

Abstract:
1. A lighting device including light emitting units configured of a plurality of light emitting diodes connected with each other in series, the lighting device comprising: a rectifier unit configured to rectify an alternation current voltage to supply the rectified voltage to each of the light emitting units; a control unit configured to control on and off of each light emitting unit according to input voltage; and the light emitting units configured to be on and off based on the control of the control unit, wherein a first light emitting unit and a second light emitting unit are connected with each other in series, and the first light emitting unit and a third light emitting unit are connected with each other in parallel, and wherein the control unit controls the on and off of the light emitting unit to prevent reversed light velocity change of the lighting device based on the input voltage input.