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US 10,208,919 B2Granted
Retrofit LED lighting system for replacement of fluorescent lamp
AssigneeLunera Lighting, Inc.
InventorsDonald Barnetson, Peter Shen, Chris Miao
Life of this patent
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Abstract
A retrofit light emitting diode (LED) lamp is provided for replacement of ballast driven fluorescent lamps. The retrofit LED lamp comprises a plurality of light emitting diodes. The plurality of light emitting diodes is mounted on a metal core printed circuit board (MCPCB). A PCB circuit is provided for driving the plurality of LEDs that further comprises a bridge rectifier made of a schottky diode.
Claims8
A retrofit LED lamp for replacement of a socket fitted CFL driven by fluorescent ballast, comprising:
- a plurality of LEDs arranged on a metal core printed circuit board plate, the metal core printed circuit board plate surface is coated with an internal reflector to reflect the light emitted towards the surface;
- a housing for positioning the plurality of LEDs that acts as a heat sink for dissipating heat;
- a diffuser fitted to the housing for diffusing the light emitted by the plurality of LEDs;
- a circuit board to drive the plurality of LEDs, said circuit board comprises a bridge rectifier comprising schottky diodes and a capacitor placed between the output of the bridge rectifier and input to the plurality of LEDs;
- a plug with an anode and a cathode input that provides an electrical connection between the ballast and the bridge rectifier, wherein the cathode and the anode input has a series resistor that act as a thermal fuse.
2 more elements
Dependencies are inferred from the claim text.