SOLAR HEAT COLLECTOR

PURPOSE:To make it possible to judge whether or not a reflecting plate is in a correct position by a method wherein the case of the solar heat collector provided with a heat collecting pipe and the reflecting plate for reflecting the sunlight upon the heat collecting pipe within a light transmissive outer cylinder, an indicating needle is attached to the heat collecting pipe. CONSTITUTION:The reflecting plate 9 is formed integral with the heat collecting pipe 8 through a C-shaped support rod 10b, a vertical rod 10a and a stop member 11 so that the reflecting plate 9 rotates relative to the rotation of the heat collecting pipe 8 in the circumferential direction. The indicating needle 13 is attached to the heat collecting pipe in such a manner that the indicating needle is always suspended perpendicularly due to gravity so as to oscillate freely. Further, the reflecting plate 9 is provided with a display section 15 adopted to display that the reflecting plate 9 is in a proper position. In case where the indicating needle 13 is deviated from the display section 15, it means that the reflecting plate 9 is not in the proper position and therefore, the heat collecting pipe 8 is rotated by using a tool to thereby position the reflecting plate 9 properly.