SHEET SHUTTER AND PROJECTION SHEET SHUTTER

PROBLEM TO BE SOLVED: To provide a sheet shutter using a flat type sheet, which is improved so as to prevent the bulged deformation of the sheet and slippage of both ends of the sheet from a rail box. SOLUTION: This sheet shutter is equipped with the flat type sheet 10, and a rail box body 33 with a slit-shaped guide part 35 into which both width-direction ends of the sheet 10 are to be inserted. A resin guide 15 is attached to the guide part 35. The resin guide 15 comprises a base part 51 which is attached along the edge 34 of the guide part 35, and a fin part 53 which comes into contact with the sheet 10 by protruding into the guide part 35 from the base part 51. An end of the sheet 10 is provided with a folded piece 15 which protrudes toward the crosswise center of the sheet 10. When the end of the sheet 10 is about to be pulled out from the guide part 35 of the box body 33, the folded piece 17 interferes with the fin part 53 of the resin guide 50 so as to prevent the end of the sheet from slippage from the box body 33. COPYRIGHT: (C)2006,JPO&NCIPI