Patent ID: 9532412
Filing Date: 2016-12-27
CPC Classification: H05B

Claim Text:
1. A lighting apparatus which uses a rectified voltage, comprising: a lighting unit comprising a plurality of LEDs configured to emit light in response to the rectified voltage and divided into a plurality of LED groups; a flicker control circuit configured to secure a charge voltage by performing a first charge operation based on a magnitude-limited current using the rectified voltage which is equal to or more than a first level and provided through one or more LEDs, and provide the charge voltage to an input terminal of the lighting unit through a first discharge operation, in response to the rectified voltage less than a second level lower than the first level; and a control unit configured to provide a current path for light emission of the lighting unit, wherein the lighting unit comprises one or more capacitors connected in parallel to the respective LED groups and configured to perform a second charge or discharge operation, wherein the flicker control circuit comprises: a first path element configured to form a first path for the first charge operation in response to the rectified voltage which is equal to or more than the first level and provided through one or more LEDs; a current circuit configured to provide a current when the current is introduced through the first element; a second path element configured to form a second path for the first discharge operation in response to the rectified voltage less than the second level; and a charge and element configured to perform the first charge operation using the current and perform the first discharge operation through the second path.