Patent ID: 9462658
Filing Date: 2016-10-04
CPC Classification: F21K,H05B,Y02B

Claim Text:
1. An LED lighting device, comprising: first and second power input units receiving an AC voltage generated in a stabilizer for a fluorescent lamp, the first and second power input units being broken when an overvoltage or overcurrent is introduced; first and second rectification units wave-rectifying an AC power outputted from the first and second power input units; a smoothing unit smoothing a wave-rectification outputted from the first and second rectification units; an overvoltage protection unit blocking a flow of current when a voltage outputted from the smoothing unit is an overvoltage that is equal to or greater than a critical value, the overvoltage protection unit comprising first and second Zener diodes reversely connected to an output terminal of the smoothing unit and a silicon rectification controller, wherein the silicon rectification controller serves as a switch device which guides a flow of current to a cathode connected to a ground point from an anode connected to an output terminal of the smoothing unit when the first and second Zener diodes are conducted to each other, and current flowing through the second Zener diode is introduced to the gate; and a driving voltage generation unit generating a driving voltage for driving a plurality of diodes on the basis of a DC voltage outputted from the overvoltage protection unit.