Solar collector device for use in daylight system for conducting sun parallel light into building roof, has container containing fluid heated so that volume change is experienced, where volume change actuates collector to rotate around axis

摘要

The device (5) has a collector (13) e.g. mirror, rotatably provided around an axis (15). A container (14) contains fluid (24) e.g. hydraulic oil, which is heated during striking of parallel light (3) of the sun on the container so that a volume change is experienced. The volume change actuates the collector to rotate around the axis. The collector variably shadows the container based on a sun position. The container includes sections (21, 22), which are bent relative to each other. One of the sections includes an angle ranging between 0 degree und 30 degrees relative to a horizontal.