Utility lamp

Details Utility lamp Utility lamp

2007-10-02

2007-10-02

Husar, Stephen F. (Department: 2875)

Illumination

Light modifier

Reflector

C362S294000, C362S296040, C362S341000, C362S344000, C362S373000, C362S800000

Reexamination Certificate

active

11500422

ABSTRACT:
A utility lamp (1) comprises a curved reflector (2) having a spherically curved surface. An array of LEDs (3) is arranged in an electrical circuit on a thin substrate mounted via thermally conductive epoxy on a thermally-conductive base (4), which in turn forms an integral part of the reflector (2). The LEDs are mounted for efficient heat transfer by conduction to the reflector (2). The reflector (2) thus operates as both a light reflector and as a radiative heat sink. The heat radiating properties of the reflector are enhanced by integral fins (7) extending in the radial direction around the periphery of the reflector (2). The reflector (2) is of integral aluminium construction.

REFERENCES:
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patent: 6758582 (2004-07-01), Hsiao et al.
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Patent Abstracts of Japan, vol. 2003, No. 8, Aug. 6, 2003 & JP 2003115615A (Matsushita Electric Ind Co Ltd), Apr. 18, 2003.
Patent Abstracts of Japan, vol. 2002, No. 12, Dec. 12, 2002 & JP 2002223007A (Matsushita Electric Ind Co Ltd), Aug. 9, 2002.
Patent Abstracts of Japan, vol. 2003, No. 2, Feb. 5, 2003 & JP 2002299700A (Nichia Chem Ind Ltd), Oct. 11, 2002.
Patent Abstracts of Japan, vol. 2000, No. 14, Mar. 5, 2001 & JP 2000315406A (Stanley Electric Co Ltd), Nov. 14, 2000.
Patent Abstracts of Japan, vol. 2003, No. 6, Jun. 3, 2003 & JP 2003059306A (Pentax Corp), Feb. 28, 2003.
Patent Abstracts of Japan, JP 2004186105, published Jul. 2, 2004 (Yamada Shomei KK).

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