Patent ID: 8649091

Claim:
A screen unit comprising: a flexible and substantially rectangular screen; a holding unit which holds one end of the screen; a winding unit which holds the other end of the screen and functions as a component around which the screen is wound; a stretching and contracting mechanism which moves the holding unit close to and away from the winding unit to expand and store the screen; the screen having a pair of peripheral sides extending from the one end to the other end; and an adjusting unit which adjusts the position of the one end of the screen when the screen is expanded by the stretching and contracting mechanism, wherein the adjusting unit comprise a plurality of selectively adjustable support members that adjust the one end of the screen in a direction that is planar to the screen and towards or away from one of the peripheral sides in a direction perpendicular to the direction in which the screen is expanded by the stretching and contracting mechanism.