LED ILLUMINATION DEVICE INVOLVING FLICKER REDUCING CIRCUIT

摘要

The purpose of the present invention is to reduce a flicker phenomenon due to the change of an input voltage by including a circuit to reduce the flicker phenomenon. For this, provided is an LED lamp including the circuit to reduce the flicker phenomenon which includes a power source which supplies input power; a rectification circuit unit which outputs rectification power which is rectified by receiving the input power from the power source; a charge storage circuit unit which receives power from the rectification circuit unit, stores charges in case of a high voltage, and discharges the stored charges in case of a low voltage; an LED unit which is connected to a plurality of LED channels in series and includes a resistance unit which is connected to the final terminal of the LED channel; a current sensing resistor; and a switch circuit unit which includes a plurality of switches. Wherein, an n-th switch is connected to the rear terminal of an n-th LED channel and controls the operation of the LED channel. The n-th switch is controlled by the combination of the current of the n-th switch and the current of the (n+1)-th switch flowing in the current sensing resistor.