LED apparatus with temperature control function

Details LED apparatus with temperature control function LED apparatus with temperature control function

2006-07-11

2010-10-19

Mai, Anh T (Department: 2832)

Electrical resistors

Resistance value responsive to a condition

Ambient temperature

C362S253000, C362S276000, C315S309000

Reexamination Certificate

active

07817009

ABSTRACT:
An LED apparatus with temperature self-regulating, over-temperature protection, and over-current protection function comprises an LED chip, a heat dissipation plate, a heat conductive layer and a temperature control device. The heat dissipation and the heat conductive layer disposed thereon carry the LED chip and dissipate the heat generated from the LED chip that is connected to an electric power source for luminance. The temperature control device exhibiting PTC behavior is electrically connected between the LED chip and the electric power source in series, and the distance between the LED chip and the temperature control device is less than 3 cm. The heat conductive layer can consist of polymeric dielectric material and has a heat conduction coefficient larger than 1.0 W/mK at 25° C.

REFERENCES:
patent: 6487084 (2002-11-01), Chu et al.
patent: 2006/0012997 (2006-01-01), Catalano et al.
patent: 2007/0121326 (2007-05-01), Nall et al.
patent: 2479709 (2002-02-01), None
patent: 7106635 (1995-04-01), None

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