Patent ID: 8069597

Claim:
A multipurpose advertisement board using a double glazed window, comprising: a double glazed window including two or more glass plates having outer edges fixed using a frame, which are arranged in parallel at regular intervals, with a certain space between the glass plates; a film moving in the space between the glass plates of the double glazed window; and an upper winding roller and a lower winding roller installed at an upper side and a lower side of the double glazed window for winding the film in order to move the film, the multipurpose advertisement board further comprising: two pieces of steel wire connected to a left and a right end of the film, respectively; and steel wire winding grooves provided to the upper winding roller and the lower winding roller, respectively, for allowing the two pieces of steel wire to be wound, wherein the steel wire, connected to a starting end or an ending end of film, is long enough so that the steel wire extends an entire vertical length of the double glazed window when the film is completely wound, so that the double glazed window acts as a normal transparent window.