Illumination – Light source and modifier – With sealing means or artificial atmosphere
Reexamination Certificate
2006-04-04
2006-04-04
Ward, John Anthony (Department: 2875)
Illumination
Light source and modifier
With sealing means or artificial atmosphere
C362S153100, C362S294000, C362S373000
Reexamination Certificate
active
07021793
ABSTRACT:
The present invention is a ground-embedded, air-cooled lighting device. In particular, the present invention is directed to a floodlight or sealed lamp. A preferred embodiment of the floodlight comprises a sealed casing having an exterior wall and contains air. The sealed casing holds a disc element supporting a translucid material and a tube spaced from the exterior wall. The tube is preferably concentrically mounted within the casing. The tube surrounds an optical reflector, a light source mounted at the reflector's focus and aimed at the disc element, and a power supply for the light source. The sealed casing further contains a fan, preferably aimed a portion of the exterior wall having increased thermal conductivity. The fan circulates air in the casing through the tube and past the disc element for cooling purposes.
REFERENCES:
patent: 4984139 (1991-01-01), Goggia
patent: 5083253 (1992-01-01), Hahnel
patent: 5479322 (1995-12-01), Kacheria
patent: 5887966 (1999-03-01), Eissner et al.
patent: 5934783 (1999-08-01), Yoshikawa
patent: 6068384 (2000-05-01), Tyson et al.
Biasoli Francesco
Roche Francis
Gray III Gordon E.
Ward John Anthony
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