| 摘要 |
PCT No. PCT/DE82/00204 Sec. 371 Date May 20, 1983 Sec. 102(e) Date May 20, 1983 PCT Filed Sep. 20, 1982 PCT Pub. No. WO83/01122 PCT Pub. Date Mar. 31, 1983.Known protection devices against solar light have orientable slats of translucent material with, on the inside, a plurality of conical prisms. With such an arrangement, the closure field obtained is more or less circular and, as a consequence, the daylight penetration is unfavorable while it is necessary to provide for an additional orientation during the day. The device according to the invention has, compared to known devices, better transparency characteristics without requiring an adjustment to the orientation during the day and with little adjustment throughout the year. According to the invention, the slats orientable along their horizontal axes are of a simple construction, and are provided on the inner surfaces with prismatic rods parallel to the longitudinal axes and having on the outer surface a flat base face. The surfaces on the sides of the right angle of the prismatic rods are free of reflecting layers and form an angle of 90 DEG . |
