Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Reexamination Certificate
2006-10-12
2009-12-29
Lee, Jong-Suk (James) (Department: 2885)
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
C362S547000, C362S218000, C362S373000, C362S800000
Reexamination Certificate
active
07637633
ABSTRACT:
Heat dissipation devices for an LED lamp set has a plate-type heat spreader as the core unit. The plate-type heat spreader is either a flat-plate heat pipe or a metal plate embedded with heat pipes. The high-power LED lamps are thermally connected to the bottom surface of the heat spreader so that the heat generated by the LED lamps is absorbed by the evaporation region of the flat-plate heat pipe or the embedding heat pipes. The heat is spread by internal vapor motion of the working fluid toward different regions of the heat spreader. The top surface of the heat spreader is connected with a finned heat sink, where the heat is delivered to the ambient air. The hot air leaves by buoyancy through the openings on a lamp housing located above the finned heat sink. The inner surface of the lamp housing can be connected with the top surface of the plate-type heat spreader, with the heat dissipated out at the surface of the housing by natural convection.
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Lee Jong-Suk (James)
Lovell Leah S
National Tsing Hua University
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