Patent ID: 7982402

Claim:
A light source assembly for use with a fixture having a socket connected to an external ballast circuit for generating a ballast voltage, the light source assembly comprising: a ceramic metal halide (CMH) lamp; a screw base that engages the socket, to electrically connect the light source assembly to the external ballast circuit and to conduct the ballast voltage when the screw base engages the socket; a circuit board having mounted thereon a igniter circuit electrically connected to the screw base to receive the ballast voltage from the external ballast circuit, the igniter circuit also electrically connected to the CMH lamp to selectively energize or re-energize the lamp with a high voltage generated by the igniter circuit using the ballast voltage received from the external ballast circuit via the screw base; an electrically insulating reflector to receive the CMH lamp; an electrically insulating lens supported by the reflector so that the reflector and the lens enclose the CMH lamp; and an electrically insulating housing supporting the screw base and enclosing the CMH lamp and the circuit board, the housing supporting the reflector and lens; wherein the lens, the reflector and the housing form an electrically insulating enclosure so that the screw base is the only electrically conductive portion of the light source assembly; and wherein the high voltage to energize or re-energize the lamp is contained within the electrically insulated housing and none of the high voltage is external to the light source assembly.