| 摘要 |
PURPOSE:To enhance the collecting efficiency of the sun light by a structure wherein the crown part of the capsule and the connecting part to the basic part are joined into one body on a plane with the predetermined inclination to the horizontal axis. CONSTITUTION:Flanges 2a and 3a, which connect the crown part 2 of the capsule 4 housing a sun light collecting device 10 threwithin and the connecting part 3 to the basic part 1 with each other, are joined into one body on a plane inclined to the horizontal axis at the predetermined angle. Owing to the structure as described above, because the dust gathered on the flanges 2a and 3a is allowed to be washed off by rain and the snow heaped on the flanges 2a and 3a is allowed to be slided down along the slope of the flanges 2a and 3a, the interception of the sun light by dust, snow or the like is eliminated. |
