LED illuminating device

Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope

Reexamination Certificate

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Details

C313S046000

Reexamination Certificate

active

07868525

ABSTRACT:
An LED illuminating device includes an optical part having a light source therein, an electrical part and a heat dissipation part. The electrical part includes a rear shell and a circuit board electrically connecting with the light source. The heat dissipation part includes a hollow front shell having a rear end secured with the rear shell, a heat sink and a cooling fan arranged in the front shell. The front shell defines a plurality of first and second air holes. The heat sink includes a solid base and a plurality of fins. The light source is thermally connected with the base. An airflow produced by the cooling fan is introduced into the front shell via the first air holes. The airflow flows then towards the heat sink and finally flows out of the front shell via the second air holes.

REFERENCES:
patent: 2006/0193139 (2006-08-01), Sun et al.

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