Daylight roller shutters for use as sun protection measure in office buildings, have light reflecting faces reflecting sun irradiation with higher incidence angles to underside of upper roller shutter profiles

摘要

The shutters have roller shutter profiles (52, 53, 54, 55) forming light reception bays with a light reception width (W1), where the light reception bays include a plane, arched or bent light reflection faces (56). The light reflection faces are placed at an angle greater than zero. A sun irradiation (60) with small sun incidence angles (alpha1) is reflected inside upper half space of an interior part via the light reflection faces. The sun irradiation with higher incidence angles (alpha2) is reflected to an underside of upper roller shutter profiles via the light reflection faces. An independent claim is also included for a method for production of roller shutter bars.