PURPOSE: To reduce stress at the time of heating and prevent the thermal breakage of a window glass by providing a heater wire for reducing thermal stress other than a normal heater wire on the edge vicinity of a window glass on an outer side from the normal heater wire.
CONSTITUTION: An outer glass 1a and an inner glass 1b are joined via an intermediate film 2 such as polyvinyl butyral in a window glass 1, and a masking print 3 composed of a ceramic collar etc. is formed at a given width over the all periphery on the peripheral edge part of the inner surface of the outer glass 1a. Plural heating wires 4 for melting snow or ice and wired on the surface of the masking print 3 of the lower edge part of the outer glass 1a. Moreover a heating wire 6 for reducing thermal stress other than the heating wire 4 is provided on a part further near to the glass edge part from a position where the heating wire 4 for melting snow or ice is provided. This melts ice and snow adhering to the side edge part of the window glass 1 by the wiping-out action of a wiper 5, and also lessens the occurrence of thermal stress at the time of melting.
KOYAMA TAKAYUKI
SHIRAISHI YASUNORI
| JPS6037459U | 1985-03-15 | |||
| JPS49115117A | 1974-11-02 |
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