| 主权项 |
1. A light emitting diode (LED) lighting device, comprising:
an LED lamp module including at least one or more LED elements connected in series; a power supply connected to the LED lamp module, supplying driving power to the LED elements, and being configured as a high voltage low current power supply having a simplified circuit configuration from which a half-bridge circuit, an output smoothing circuit and an output-side electrolytic capacitor are removed, the power supply for an LED lamp module includes: an input filter removing noise induced from input power and including a fuse in order to protect a product from a surge caused by a lightning strike; a bridge rectifier connected to the input filter and rectifying alternating current (AC) input voltage to convert the rectified voltage into direct current (DC) voltage; a power factor matching unit connected to the bridge rectifier, uniformly maintaining the input DC voltage, improving power factors, and being configured to supply the driving power to the LED lamp module without a separate conversion circuit; an auxiliary power supply connected to an output terminal of the bridge rectifier and supplying the driving power to the power factor matching unit and a current sensor; and the current sensor detecting driving current supplied from, the power factor matching unit to the LED lamp module in order to supply current in which the power factors are improved to the LED elements. |
