| 摘要 |
PROBLEM TO BE SOLVED: To provide a light reflection unit that reduces distortion of a reflection plate and decrease of reflectance of the reflection plate.SOLUTION: The light reflection unit comprises a frame body 3 having a curved supporting member 7 that is curved in a concave arc shape. A magnet sheet 15 is provided on the concave arc surface of the curved supporting member 7. At least a portion of a reflection plate 4 made of a magnetic material is attracted by a magnetic force of the magnet sheet 15 and fixed to the curved supporting member 7. When the reflection plate 4 is fixed to the curved supporting member 7 in this manner, the reflection plate 4 is curved in a concave arc shape along the curved supporting member 7, and a reflection concave arc surface 16 of the reflection plate 4 is opposed to a heat collecting pipe 2 so that reflected light from the reflection plate 4 is collected onto the heat collecting pipe 2. Then, the reflection plate 4 reflects light onto the heat collecting pipe 2 in which fluid can flow, and the fluid in the heat collecting pipe 2 is heated. |
