Arrangement of heating strips of defogger on vehicle window glas

Details Arrangement of heating strips of defogger on vehicle window glas Arrangement of heating strips of defogger on vehicle window glas

1998-11-30

2000-10-24

Hoang, Tu Ba

Electric heating

Heating devices

Combined with diverse-type art device

B60L 102

Patent

active

061370851

ABSTRACT:
A vehicle window glass assembly comprises a window glass and a plurality of parallel, electric heating strips disposed on the window glass. The distance between adjacent two of the heating strips at least at portions thereof disposed in a central region of the window glass being in the range of 20 to 28 mm so that a quantity of heat generated by the heating strips per unit area can be smaller, i.e., 0.80 to 0.95 times of a reference electric power or a supply power for the heating strips can be 0.80 to 0.95 times of a reference electric power. The reference electric power is a power necessary for causing a surface temperature of a comparable window glass with comparable heating s trips to rise up to 90% of an equilibrium temperature in the range of 35 to 45.degree. C., in 5 to 10 minute's time after energizing of the comparable heating strips starts, under the condition where the distance between adjacent two of the comparable heating strips at portions thereof disposed in a central region of the comparable window glass is in the range of 29 to 33 mm, a room temperature is 20.degree. C., and windless.

REFERENCES:
patent: 4196338 (1980-04-01), Edel
patent: 4707586 (1987-11-01), Voss et al.
patent: 5182431 (1993-01-01), Koontz et al.
patent: 5653904 (1997-08-01), Adlparvar et al.
patent: 5886321 (1999-03-01), Pinchok, Jr. et al.

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