Electric lamp and discharge devices – With temperature modifier – Having heat conducting path
Reexamination Certificate
2011-06-28
2011-06-28
Patel, Nimeshkumar D (Department: 2879)
Electric lamp and discharge devices
With temperature modifier
Having heat conducting path
C165S104210
Reexamination Certificate
active
07969075
ABSTRACT:
A phase change material (PCM) is used as thermal storage for lighting systems. The PCM is placed in a thermally conductive container in close contact with the lighting system. As the PCM absorbs heat, it changes from a solid to a liquid state, but the temperature of the PCM is clamped at its melting point temperature. For LED-based systems, the PCM is selected to have a melting point such that the junction temperatures of the LEDs in the system are maintained at approximately their optimum operating temperature inside the lighting system housing. Because the thermal conductivity of the molten PCM is poor, a low thermal resistance heat flow path is provided from the PCM to the container.
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Ghose Sanjoy
Kingman James
Weaver Matthew
Horikoshi Steven
Lumenetix, Inc.
Patel Nimeshkumar D
Perkins Coie LLP
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