PROJECTION IMAGE SYSTEM AND ASSEMBLING SYSTEM THEREFOR

摘要

A projection image unit comprises a screen, a box-like casing arranged behind a back surface of the screen having an opening face directed to the back surface and a projector disposed in the casing so as to project an image on the screen. The casing has outside dimensions in cross-section smaller than those of the screen. A plurality of projection image units are piled in matrix in an outer frame so as to constitute a projection image system having a large screen. The outer frame unit comprises vertical frames and horizontal frames constituting the outer configuration of the outer frame unit. A horizontal frame member is disposed between the vertical frames of the outer frame unit through a gap between the vertically adjacent projection image units, and a vertical frame member is disposed between the horizontal frames of the frame unit through a gap between the horizontally adjacent projection image units. The assembling of the projection image system is carried out by utilizing a crane device movably mounted on a frame unit enclosing entirely a plurality of the projection image units.