REFLECTING PLATE

PROBLEM TO BE SOLVED: To provide a reflecting plate which uses, as a reflecting material, an ultrathin metal plate being difficult to stand solely by its own weight or plastically deformable and is capable of maintaining a satisfactory reflecting surface even when being increased in size or being used outdoors.SOLUTION: The reflecting plate uses one surface of a rectangular ultrathin metal plate as a reflecting surface. Both end parts of either one of a longer side or a shorter side of the ultrathin metal plate are wound around fixing members respectively, and at least one of the fixing member is held movably, and the movably held fixing member is moved in such a direction that both of the fixing members are separated from each other, by an adjustment member installed in one or more positions in the vicinity of both ends of the movably held fixing member and/or in a frame side intermediate part between both ends of the fixing member to introduce tension to the ultrathin metal plate, and the ultrathin metal plate is firmly fixed to the fixing members in accordance with the introduced tension. 【課題】自重で自立するのが難しい、あるいは塑性変形を生じる極薄の金属板を反射材として利用した反射板において、大型化した場合や屋外使用の場合でも良好な反射面を保持することができる反射板を提供する。【解決手段】矩形の極薄金属板の一方の面を反射面として用いる反射板であって、前記極薄金属板の長辺側または短辺側のいずれかの辺側の両端部をそれぞれ固定部材に巻き付け、それら２つの固定部材のうち、少なくとも一方の固定部材を移動可能に保持しておき、前記移動可能に保持された固定部材の両端近傍、または／および、前記固定部材の両端の間である枠辺中間部に１ヶ所以上、に設置した調整部材により、双方の固定部材が離間する方向に固定部材を移動させて、前記極薄金属板に張力を導入するとともに、その導入された張力に応じて、固定部材への極薄金属板の固定が強固になるようにしたことを特徴とする反射板。【選択図】図１