Automatic mirror defrosting device

Details Automatic mirror defrosting device Automatic mirror defrosting device

H - Electricity

05

B

H05B 3/84 (2006.01) F25C 5/08 (2006.01)

Patent

CA 2584936

An automatic mirror defrosting device includes a photo-electrical sensor arranged at a backside of a mirror to detect a frosting condition of a front surface of the mirror and to issue a detection signal corresponding to the frosting condition, a defrosting control circuit connected to the photo- electrical sensor for receiving the detection signal from the photo-electrical sensor to determine the frosting condition and selectively supply a defrosting heating signal, and a heating/defrosting device coupled to the backside of the mirror and connected to the defrosting control circuit to receive the defrosting heating signal from the defrosting control circuit for selectively carrying out heating operation on the mirror for defrosting. The heating operation is automatically terminated when an optic feedback from the front surface of the mirror obtained by the photo-electrical sensor indicates the front surface has been defrosted.

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