| 摘要 |
PURPOSE:To improve the heat absorbing efficiency by covering a base mount made of a heat-insulating material with a black sheet of synthetic resin, the top of which is integrally formed with a double-lined exterior member made by the swell-molding of a transparent synthetic resin. CONSTITUTION:A reflecting surface is formed on the lower surface of an inner plate 3 of a double-lined exterior member by vacuum evaporation etc. that is made of the swell-molded transparent synthetic resin sheets in order to reflect the light and heat to the inside, while the heat insulating layer between the inner and outer plates 3, 4 is vacuumized. In this structure, the sunlight passing through the exterior member 5 is absorbed by a black sheet 2 in a water introducing tank 7. At this time, the heat dissipation is prevented by a heat-insulating base mount and the vaccum heat-insulating layer 8, and the sunlight can efficiently be trapped by the reflection by the underside of the inner plate 3. Thus, the heat absorbing efficiency can be improved. |
