Solar azimuth tracking device, solar condensing device, and solar lighting system using the same

摘要

PPROBLEM TO BE SOLVED: To materialize a solar azimuth tracking device having a simple mechanism, a solar light condensing device, and a solar light illumination system using it. PSOLUTION: This solar azimuth tracking device 3 has a thermally expanding body 5 which expands and contracts based on heat by solar light 7, a movement conversion part 6 to convert reciprocation attendant on expansion and contraction of the thermally expanding body 5 to a movement corresponding to the diurnal movement of the sun, and a tracking device body 4 to track a solar azimuth by interlocking with movement by the movement conversion part 6. PCOPYRIGHT: (C)2009,JPO&INPIT