An air passage in an air-conditioner such as an automotive air-conditioner is
selectively opened or closed by moving a position of an opening formed on a film
screen relative to the air passage. The film screen is coupled to a pair of rollers,
forming a curved path between the pair of rollers guided by a guiding surface.
The film screen is formed by laminating a first film made of resin and a second
film made of woven fabric having a higher elongation rate for a temperature rise
than the first film. The second film is positioned inside of the curved path to
prevent a shape of the roller or the guiding surface from being easily transferred
to the film screen.
