TROUGH-TYPE SOLAR HEAT COLLECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a trough-type solar heat collection device which has curvature and reduces dirt on a mirror surface plate surface.SOLUTION: A trough-type solar heat collection device includes a plurality of vent holes 105 penetrating a mirror surface plate 104 having curvature to connect the front side and the back side thereof. The vent holes allow air, dustproof, and sand to pass from the front side to the back side of the mirror surface plate surface.