METHOD AND DEVICE FOR LETTING IN SUN LIGHT

摘要

PROBLEM TO BE SOLVED: To efficiently let in sun light, even when the altitude of the sun is high. SOLUTION: A device 1 for letting in sun light tracks the direction and the altitude of the sum to not only turn a direction tracking base 7 but also operates reflection plates 71, so as to turn them toward the sum and then reflects sun light directly below to let in them. Reflection faces are directed toward the sum and are arranged in parallel, and intervals Bp of reflection plates 71 are adjusted according to the altitude of the sum by a reflection plate interval adjustment mechanism 33.