Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Reexamination Certificate
2008-05-02
2010-11-09
Alavi, Ali (Department: 2875)
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
C362S218000, C362S373000, C362S147000
Reexamination Certificate
active
07828465
ABSTRACT:
LED-based lighting fixtures suitable for general illumination in surface-mount or suspended installations, in which heat dissipation properties of the fixtures are significantly improved by decreasing thermal resistance between LED junctions and the ambient air. In various examples, improved heat dissipation is accomplished by increasing a surface area of one or more heat-dissipating elements proximate a trajectory of air flow through the fixture. In one aspect, various structural components of the fixtures are particularly configured to create and maintain a “chimney effect” within the fixture, resulting in a high air-flow rate, natural convection cooling system capable of efficiently dissipating the waste heat from the fixture without active cooling.
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Koerner Brad
Lys Ihor
Mollnow Tomas
Roberge Brian
Roberts Ron
Alavi Ali
Koninlijke Philips Electronis N.V.
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