Patent ID: 6953269
Filing Date: 2005-10-11
Classification: F21S,F21V,F21W,G03B,G03F

Abstract:
1. A lighting unit with discharge lamps for spotlights, comprising: a containment enclosure; at least one discharge lamp located inside said containment enclosure; at least one ventilation element arranged for directing a stream of air to said at least one discharge lamp for cooling said at least one discharge lamp; an electronic fan power supply configured for driving said at least one ventilation element at variable speed; an electronic lamp power supply configured for supplying said at least one discharge lamp with variable power levels; measurement signals derived from measurements of operating conditions inside and outside the lighting unit; and a control unit; said control unit being operatively connected to said fan power supply for selectively driving said fan power supply in order to actuate said at least one ventilation element at a variable speed and simultaneously said control unit being operatively connected to said lamp power supply for selectively driving said lamp power supply for supplying said at least one lamp with variable power, said control unit being controlled by said measurement signals.