DEW CONDENSATION PREVENTING CURVE MIRROR

PURPOSE:To obtain a curve mirror capable of preventing dew condensation from occurring under any kind of meteorological condition. CONSTITUTION:A curve mirror main body in which a mirror plate 4 and a back plate 5 are provided at the back plane of the mirror plate 4 keeping a small interval between the mirror plate 4 is comprised of a heat accumulation material housing bag 6 loaded along almost the whole back plane and in which a heat accumulation material is sealed, a heater member 10 interposed between at least the back plane of the mirror plate 4 and the housing bag 7, or underneath either of them or both of them between the housing bag 7 and the back plate 5, and a temperature sensor which heats the member 10 when outside air temperature goes less than 6 deg., and one or plural heat insulating materials 14 are interposed between the housing bag 7 and the back plate 5.