Heat spreader for electronic ballast

Details Heat spreader for electronic ballast Heat spreader for electronic ballast

1997-07-30

2000-07-18

Vu, David H.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Load device temperature-modifying means combined with or...

315 56, 361720, H01J 724

Patent

active

060911999

ABSTRACT:
An insulating enclosure for an electronic ballast has at least one major surface and a thermally conductive heat spreader at the major surface. The heat spreader is thermally coupled to at least one of the electronic components within the ballast and has an area greater than the area of the component as measured parallel with the major surface. The electronic components are thermally coupled to the heat spreader by a thermally conductive, deformable means such as caulk or by domes or dimples in the heat spreader that accommodate the variations in height among the electronic components. An electrically insulating layer can be located between the heat spreader and some of the components to prevent the heat spreader from electrically shorting the components.

REFERENCES:
patent: 2711382 (1955-06-01), Smith-Johannsen
patent: 4738024 (1988-04-01), Eberhardt
patent: 5015803 (1991-05-01), Mahulikar et al.
patent: 5307236 (1994-04-01), Rio et al.
patent: 5397917 (1995-03-01), Ommen et al.
patent: 5629581 (1997-05-01), Belle et al.
Gottlieb, Irving M., The all-important matter of thermal conductivity, McGraw-Hill,Inc.,pp 101, 1992.

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