Patent ID: 9033545
Filing Date: 2015-05-19
Classification: F21K,F21V,H05K

Abstract:
1. A retrofit LED lamp for replacing a socket type metal halide lamp driven by a magnetic ballast, the said lamp comprising: a string of LED mounted on an MCPCB plate; a housing that serves as a mean for dissipating the heat generated by LED; a diffuser placed over the MCPCB plate to diffuse the light emitted by LED; a PCB circuit to provide the voltage input to the string of LED, the said PCB circuit comprises a bridge rectifier to convert the output from the magnetic ballast to DC current required to illuminate the string of LED; and a base connector adapted to fit into the socket meant for metal halide lamp, the said base connector provides electrical connection between the output of magnetic ballast and the said PCB circuit; wherein the retrofit LED lamp works on the electric current supplied by magnetic ballast and can operate without removing the magnetic ballast.