LED Device with Shared Voltage-Limiting Unit and Individual Equalizing Resistance

摘要

The present invention relates to a LED device with shared voltage-limiting unit and individual voltage-equalizing resistance, wherein two ends of a LED set constituted by a plurality of same-polarity series LEDs are in parallel connected with a shared voltage-limiting unit, and two ends of individual LED are respectively in parallel connected with an voltage-equalizing resistance for providing an overvoltage protection to the LEDs.

主权项

1. An LED device with shared voltage-limiting unit and individual voltage-equalizing resistance, comprising:
a light-emitting unit, comprising a plurality of LEDs connected in series and in a same polarity; a plurality of voltage-equalizing resistance corresponding to said plurality of LEDs, wherein each each voltage-equalizing resistance is connected in parallel at ends of a corresponding LED; and a shared voltage-limiting unit connected in parallel at two ends of two or more than two of the series-connected LEDs, the voltage-limiting unit including a semiconductor unit having a resistance that is rapidly reduced when subject to overvoltage and the voltage-equalizing resistance including a resistive component.