| 摘要 |
PURPOSE:To enhance the heat collecting efficiency of a heat collector by forming many convex lenslike patterns integral with a transparent blank in an effective area of a disklike surface of the transparent blank which is formed in a disklike shape. CONSTITUTION:When many convex lenslike patterns 2 are formed integrally with a transparent blank which is formed in a disklike shape in the effective area of the disklike surface of the blank in a heat collector 1 adapted for the heat collecting part as the surface plate of a solar heat hot water device, its heat collecting effect can be effectively performed as compared with the plate having a flat surface. When they are accordingly applied as a heat collector in the hot water device, they can perform excellent thermal efficiency. |
