Patent ID: 9743479
Date: 2017-08-22
CPC Classifications: H05B,Y02B

Claim:
1. An LED lighting apparatus, comprising: a light-emitting diode (LED) light-emitting device configured to emit light when driven by a voltage, the LED light-emitting device comprising a first LED group to an n a rectifier connected to an alternating current (AC) power source and configured to output a first rectified voltage as a first drive voltage to the LED light-emitting device through full-wave rectification of an AC voltage; and an LED drive controller configured to detect the first drive voltage applied to the LED light emitting device and configured to control sequential driving of the first LED group to the nth LED group, based on the detected first drive voltage, wherein the LED drive controller is configured to set an LED drive current in each of operation sections to be inversely proportional to a total number of LEDs operated to emit light in each of the operation sections such that a difference between light output of the LED light-emitting device in each of the operation sections does not exceed a predetermined light output deviation, and is configured to control the LED drive current to maintain a constant drive current in a corresponding operation section according to the set LED drive current in each of the operation sections.