Patent ID: 8690391

Claim:
A lighting apparatus comprising: a housing; a window coupled to the housing, the housing and the window cooperating to define an interior region of the housing; a first light emitter located in the interior region of the housing, the first light emitter including a first plasma bulb; a first radio frequency driver operatively coupled to the first emitter, the first radio frequency driver generates a first radio frequency signal which causes the first plasma bulb to generate a first source of light; a second light emitter located in the interior region of the housing, the second light emitter including a second plasma bulb; a second radio frequency driver operatively coupled to the second emitter, the second radio frequency driver generates a second radio frequency signal which causes the second plasma bulb to generate a second source of light; and at least one heat sink coupled to at least one of the first radio frequency driver and the second radio frequency driver, the at least one heat sink including a plurality of fins located outside of the housing for cooling the first radio frequency driver and the second radio frequency driver.