Multi-piece combined lifting louver blade

摘要

Disclosed is a multi-piece combined lifting louver blade which includes a main blade (1) and a lifting blade (2). The cross section of the lifting blade (2) in the width direction has the same shape as that of the main blade (1) in the width direction. The lifting blade (2) is attached on the upper or lower surface of the main blade (1). The lifting blade (2) can be driven to lift together with the main blade (1) and also to lift relative to the main blade (1) by a lifting mechanism. Various sun-shading and light-guiding louver systems formed by the multi-piece combined lifting louver blades can achieve the optimization of controlling retro-reflection and deflection import volume of direct sunlight according to season change and specific requirements of persons. High transmissivity is simultaneously kept whether solar altitude angle is high or low.