Illumination device with thermally isolated integral power supply
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United States of America Patent
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May 5, 2009
Grant Date -
Sep 29, 2005
app pub date -
Jun 21, 2005
filing date -
Jun 21, 2005
priority date (Note) -
Expired
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Abstract
An incandescent lamp may be formed from a shell having an exterior side and an interior side defining a cavity, and with an internal wall defining a through passage extending from the exterior side to the interior side. A light source is located in the cavity facing the interior side, and coupled to electric lamp leads extending through the passage. A heat radiator assembly is adjacent the exterior side, and includes heat-dissipating surfaces exposed to air. An integral power supply is enclosed in the heat radiator assembly and electrically connected to the light source through the electric lamp leads. A threaded base having exterior electrical contact points is electrically connected through base leads to the integral power supply. The shell, radiator assembly and base are mechanically coupled as a unit. A lens may cover the shell to enclose the cavity and light source.
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