| 摘要 |
PURPOSE:To enable the ceiling in its mode to correspond to a multiple-purpose by forming one part of the ceiling of a multiobjective theater or the like as the movable ceiling unit and vertically or horizontally driving both ends of its supporting beam running along a vertical or horizontal rail. CONSTITUTION:One part of the ceiling of a multiobjective theater or the like is formed serving as the one or more movable ceiling units 8, 9, 10, and both ends of their supporting beams 11, 12, 13 are engaged with vertical rails 5, 20 and horizontal rails 17, 18, 19 arranged in a bridge 2 in both sides of the ceiling. Each movable ceiling unit 8, 9, 10 is lowered along the vertical rails 5, 20, being positioned in the lowermost end with the total surface serving as the ceiling. While each movable unit 8, 9, 10 is horizontally moved along the horizontal rails 17, 18, 19 being compactly piled and stored in the upper of the ceiling. |
