JP2006154854A5 - - Google Patents

Claims (4)

An opening into which the end of the screen can be inserted is formed in at least one of both ends in the winding direction of the screen, and the end of the screen positioned inside through the opening can move to the outside through the opening. A support shaft made of an internal hollow cylinder provided with a locking holding means for locking and holding the screen end so as not to exist,
Screw body is provided protruding toward the outside from the support shaft inside portion, and a connecting member attached to at least one end of the screen width direction of the locking holding means and brought into contact with an end portion of the support shaft against A cap for closing the openings at both ends in the longitudinal direction of the support shaft is formed at the other end at the other end with a cap formed on the projecting end of the screw body. Constructing a pulling means for applying a tensile force to the screen by pulling outward in the width direction ,
The projection screen device , wherein the tensile force is adjusted by rotating the cap around the screw portion to move the connecting member in the screen width direction .   The support shaft is provided at each of both ends of the screen in the winding direction, the support shaft provided at one end of the screen is provided with a suspension member, and is suspended by the suspension member so that the upper side in a substantially horizontal posture. 2. A projection shaft according to claim 1, comprising: a suspension spindle located at the bottom, and a winding spindle located in a substantially horizontal position below the suspension spindle and provided at the other end of the screen. Screen device. The projection screen device according to claim 1 , wherein the cap is fitted on an end portion of the support shaft. The connecting member is composed of a plate part sandwiching the locking holding means, a metal fitting comprising a connecting part for connecting these plate parts at cap side ends, and the screw body having one end fixed to the connecting part, When the contact surface of the cap contacts the connecting portion, the screen side end surface of the cap that is outside the outer peripheral surface of the support shaft does not contact the widthwise end portion of the screen. 4. The projection screen device according to claim 3 , wherein the pulling means is constituted .