This invention discloses a solar collector panel for buildings, relating to the field of solar collector panel technology. It includes a movable block, a long plate, a flexible plate, a chemical tube, an L-shaped block, a protrusion, and an irregular rod. The movable block is threaded onto the circumferential surface of a reciprocating screw. The long plate is fixedly installed at the bottom of the movable block. The flexible plate is rotatably installed at the bottom of the long plate. The chemical tube is fixedly installed on the side of the long plate away from the motor. The L-shaped block is fixedly installed on the front of the long plate, and the end of the L-shaped block away from the motor can elastically extend and retract. The protrusion slides through the front of the L-shaped block near the left side. The irregular rod is fixedly installed on the side of the protrusion away from the motor. This design ensures maximum
sunlight reception, maintains high power generation efficiency, protects the
physical structure of the solar panel, extends its service life, significantly reduces the frequency of manual cleaning, and lowers maintenance costs and safety risks.