| 摘要 |
PURPOSE:To select most excellent sound effect, construction effect and air- conditioning effect easily to a wide event. CONSTITUTION:A large number of fan-shaped panels 4 are disposed in the radial direction and the peripheral direction and a circular ceiling is constituted as a whole, each fan-shaped panel 4 is lifted and lowered discretely through wires 11, and a ceiling shape and a ceiling surface under an arbitrary state are selected in simple structure while natural light is collected and utilized positively in an arbitrary space. Most excellent sound effect, construction effect and air-conditioning effect are selected easily to a wide event from a large-scale event using the whole stadium to an intermediate or small scale event mainly employing a part of the stadium. |
