To suppress a temperature rise in a car, by providing mountably/ removably a smoke film in either one of an obverse or reverse of a transparent window.

A transparent widow 4 capable of viewing the outside is provided in a car 3. A smoke film 5 is mounted in this transparent window 4 when direct rays of the sun from the outside are intense in the daytime. This smoke film 5 is formed by applying a sticking agent to one surface thereof, a surface applied with this sticking agent is fixed to an outer surface of the transparent window 4, so as to removably mount the smoke film 5 in the outer surface of the transparent window 4. By mounting the smoke film 5 thus formed, incidence of sunlight in the car 3 is impeded, and a rapid rise of temperature in the car can be prevented. An outward scene of the car 3 can be sufficiently enjoyed by placing in a condition removing the smoke film 5 when the direct rays of the sun is not so intense except in the summer time.