LED lamp having active heat dissipation structure
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United States of America Patent
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-
May 17, 2011
Grant Date -
Dec 17, 2009
app pub date -
Sep 25, 2008
filing date -
Jun 13, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An LED lamp includes a heat sink, a centrifugal blower and a plurality of LED modules. The heat sink includes a base plate defining an air intake adjacent to an end of the base plate and a plurality of fins extending downwardly from a bottom surface of the base plate, between the air intake and an opposite remote end of the base plate. The centrifugal blower is mounted on the bottom surface of the base plate and located between the air intake and the fins. The LED modules are fixed on a top surface of the base plate of the heat sink. The housing engages with the base plate to enclose the centrifugal blower and the fins therein and cooperates with the base plate to define an exhaust port between the opposite remote end of the base plate and a corresponding sidewall of the housing.
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