Light emitter sub-assemblies especially containing an array...

Details Light emitter sub-assemblies especially containing an array... Light emitter sub-assemblies especially containing an array...

2011-02-22

2011-02-22

Truong, Bao Q (Department: 2875)

Illumination

Housing

With cooling means

C362S294000, C362S547000, C362S249020

Reexamination Certificate

active

07891847

ABSTRACT:
A sub-assembly for a light-projecting module has an array of LEDs mounted on a circuit board potted in a tray at the bottom thereof by a solidified body of potting material. The body of potting material and the tray are heat-conductive and serve to dissipate heat generated by the LEDs. A light-emitting module includes the sub-assembly and a reflector. The reflector has a base which is assembled in heat-conductive relationship with the tray, so as to facilitate dissipation of heat generated by the LEDs. The reflector is a parabolic reflector which collects light from the LEDs and projects the light as a beam. The reflector contains an optical element for concentrating or diffusing the light projected from the module. The module may be assembled in a housing having an opening through which the light projects so as to provide a light bar suitable for mounting on the dash or windshield of a vehicle. A plurality of modules may be assembled around the edge of a frame which is contained in a cover of translucent material, whereby light, which may be of different colors depending upon the LEDs, is projected omni-directionally through the cover.

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