Patent ID: 6367937
Filing Date: 2002-04-09
Classification: E06B

Abstract:
Sun protection installations comprising reflective sun protection lamellae (10, 11, 12, 35, 36, 37, 38, 39, 40, 42, 63, 64, 84, 85), first lamellae portions (60, 75, 86, 91, 95) oriented to an outside and second lamellae portions (61, 76, 81, 88, 93, 96) oriented to an inside, comprising:a) portions having teeth with an upper side disposed at least towards sun irradiation influx, wherein b) individual teeth (13, 14, 15, 16, 66, 67, 68, 69, 70, 71, 72, 77, 78, 79, 80, 81) are formed of an essentially sun-irradiated tooth side (17, 18, 19, 20) and an essentially shaded tooth side (21, 22, 23), c) at least one sun-irradiated tooth side (17, 18, 93, 94) is arranged, when said reflective sun protection lamellae are in a horizontal position, at an angle &agr;1 to the horizontal and is at least partially subjected to direct sun light irradiation (25, 26), d) tooth angles &agr;1 of sun-irradiated tooth sides (17, 18) are selected to be steeper within said first lamellae portions (60, 75, 86, 91, 95) and are selected to be more flat within said second lamella portions (61, 76, 87, 88, 93, 96), e) sun light irradiation (22, 23), at least within the first lamellae portions (60, 75, 86, 91, 95), can be retro-reflected from the sun-irradiated tooth side (17, 18) by one single reflection to said outside of the reflective sun protective lamellae, and f) at least within the first lamellae portions, &agr;1 is chosen smaller than tooth angles &agr;2 of the shaded tooth side for said horizontal position of the lamellae.