LED lamp with a heat sink

Details LED lamp with a heat sink LED lamp with a heat sink

2007-11-21

2009-12-29

Lee, Jong-Suk (James) (Department: 2885)

Illumination

Light source and modifier

With ventilating, cooling or heat insulating means

C362S373000, C362S218000

Reexamination Certificate

active

07637635

ABSTRACT:
An LED lamp includes a heat sink and an LED module. The heat sink includes a body, a plurality of radial partition fins extending evenly from an outer periphery of the body and a curved wall surrounding lower portions of the fins. The fins, the outer periphery of the body and the wall together define a plurality of channels each having a lower opening and a top opening. The LED module includes a plurality of LEDs and is received in the absorbing portion of the body. The LED module is supported by the absorbing portion of the body of the heat sink. Heat generated by the LEDs is transferred to the fins via the body. From the fins, the heat is dissipated to air. The channels each function as a chimney for accelerating heated air to flow upwardly through the fins.

REFERENCES:
patent: 7549772 (2009-06-01), Wang
patent: 2004/0108104 (2004-06-01), Luo
patent: 2005/0174780 (2005-08-01), Park
patent: 2006/0001384 (2006-01-01), Tain et al.
patent: 2775467 (2006-04-01), None
patent: 2934916 (2007-08-01), None

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