| 摘要 |
PROBLEM TO BE SOLVED: To provide a sunbeam take-in device equipped with a light take-in prism having a large rate of area in proportion to the size of the device body and allowing structural simplification or omission of a frame for device body. SOLUTION: A sunbeam take-in device is equipped with a light take-in prism installed in a light take-in part or a plurality of light take-in prisms 42a and 42b arranged at a specified spacing, a rotational drive device 50 to drive the prisms 42a and 42b directly or through a rotary ring, a control device to control the rotational drive device 50 so that the prisms 42a and 42b take a proper rotating angle in accordance with the position of the sun, and a cover 49 arranged in such a way as covering the prisms 42a and 42b, wherein the drive device 50 is located near the axes of the prisms 42a and 42b.
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