Temperature adjusting device for an LED light source

Details Temperature adjusting device for an LED light source Temperature adjusting device for an LED light source

2006-09-19

2008-10-21

Truong, Bao Q (Department: 2875)

Illumination

Light source and modifier

Condition responsive

C362S085000, C362S294000

Reexamination Certificate

active

07438439

ABSTRACT:
A temperature adjusting device of the present invention is provided with: an LED light source11r, 11gand11b, a temperature sensor9for detecting an ambient temperature of the LED light source11r,11gand11b, a cooling fan for cooling the LED light source11r,11gand11b, a driving circuit22for driving the cooling fan20, a control unit4that controls a voltage to be applied to the cooling fan20so as to set the ambient temperature within a predetermined range based upon the results of detection by the temperature sensor9and a heater placed near the LED light source11r,11gand11b, and in this arrangement, the control unit is designed to control the applied voltage to the heater so as to reduce the heating value of the heater in cooperation with lighting of the LED light source11r,11gand11b.

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