LED illuminating device and light engine thereof

Details LED illuminating device and light engine thereof LED illuminating device and light engine thereof

2008-11-19

2010-11-23

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

Illumination

Housing

With cooling means

C362S294000, C362S649000

Reexamination Certificate

active

07837363

ABSTRACT:
An LED illuminating device includes an optical section (10), an electrical section (30), and a heat dissipation section (20). The heat dissipation section is provided with a heat dissipation device (21) which includes a heat sink (22) and a cooling fan (23) provided over the heat sink. The heat sink includes a solid base (231) and a plurality of fins (222) extending radially and outwardly from the base. A blind hole (225) is axially provided in the base. A plurality of air passage holes (226) are radially defined through the base and communicate the blind hole with an outside of the base. The cooling fan provides an airflow towards the heat sink. A portion of the airflow flows through the blind hole and the air passage holes of the base.

REFERENCES:
patent: 6787999 (2004-09-01), Stimac et al.
patent: 6974233 (2005-12-01), Aubrey
patent: 7144140 (2006-12-01), Sun et al.
patent: 2005/0174780 (2005-08-01), Park

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