| 摘要 |
PURPOSE:To contrive to track the sun by pivoting a curved surface mirror by the combination of a curved surface mirror being pivotably supported and a heat sensing part which is expanded or contracted due to the amount of solar ray collected by the curved surface mirror. CONSTITUTION:A bucket type curved surface mirror 1 is composed of a parabolic surface 2, a spiral surface 3 and a side plate 4. The solar ray incident on an opening part 5 is reflected toward a coil spring 6 side forming a heat sensing part by the parbolic surface 2 and the spiral surface 3. A bias coil spring 14 acting as a tension spring is arranged in a permeable cylinder 7 in addition to the coil spring 6 and a piston 12. The coil spring 6 is formed of a spiral-shaped wound wire made of a shape memory alloy, accordingly, the curved surface mirror 1 can be pivoted with the moving of the sun, thereby, the tracking of the sun can be achieved. |
