COOLING SOLID STATE HIGH-BRIGHTNESS WHITE-LIGHT ILLUMINATION SOURCES

摘要

In one general aspect, an illumination source is disclosed that comprises a housing, which can be made of a non-conducting material, and includes a cooling air intake port and a cooling air exhaust port. A circuit board is supported with respect to the housing and includes at least one insulating layer, and at least a first, electrically conductive layer on a first side of the insulating layer, with the first layer defining a plurality of pads and a plurality of traces interconnecting at least some of the pads. A socket is supported with respect to the housing and has a pair of connector surfaces for receiving power, and has an axis of insertion. A plurality of LED chips are each electrically connected to a plurality of the pads and each have an axis of illumination that is at least generally aligned with the axis of insertion. A fan is positioned between the socket and the circuit board and has an air flow delivery sufficient to provide for the majority of the cooling of the LED chips to within a predetermined operating temperature to take place through surfaces of the board. Baffles can redirect the cooling air flow.