Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Reexamination Certificate
2011-01-11
2011-01-11
Negron, Ismael (Department: 2885)
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
C362S373000, C362S218000
Reexamination Certificate
active
07866852
ABSTRACT:
According to certain embodiments, an apparatus for cooling light emitting diodes (LEDs) in projectors includes one or more first LEDs, one or more first heat sinks, one or more second LEDs, and one or more second heat sinks. The first LEDs are configured to generate light, and each first LED has a first desired junction temperature. The first heat sinks are configured to dissipate heat generated by the first LEDs. The second LEDs are configured to generate light, and each second LED has a second desired junction temperature that is higher than the first desired junction temperature. The second heat sinks are configured to dissipate heat generated by the one or more second LEDs. A cooling fan directs air flow over the first heat sinks and the second heat sinks, and an exhaust vent enables the air flow over the first heat sinks and the second heat sinks.
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Brady III Wade James
Brill Charles A.
Negron Ismael
Shallenberger Julie A
Telecky , Jr. Frederick J.
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