Wing-up light-directing slat, method of production, application, and sun protection system
First Claim
1. Light guiding slat for a sun protection system, wherein the light guiding slat is made of a band material, has an elongated form with a longitudinal direction, a cross direction and an elevation height setting and is provided for the formation of a Fresnel reflector for light guidance with a plurality of folds, wherein at least two neighbouring fold sides (Ks, K) are folded relative to each other and a fold edge extends between these fold sides (Ks, K) in longitudinal direction of the light guiding slat, characterized in that the folds are substantially made by folding and/or bending of the band material and the light guiding slat has a total height (W) which is so small that the light guiding slat has a form to be coilable with a coiling radius of 1 m or less without any substantial plastic deformation, wherein the light guiding slat comprises a soft-annealed material having an elastic limit greater than 300 N/mm2.
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Abstract
Light guiding slat for a sun protection system, wherein the light guiding slat is made of a band material equipped with a Fresnel reflector made by folding and/or bending the band material whereby the light guiding slat has a total height (G) which is so small that the light guiding slat has a form to be coilable with a coiling radius of 1 m or less without any substantial plastic deformation.
4 Citations
12 Claims
- 1. Light guiding slat for a sun protection system, wherein the light guiding slat is made of a band material, has an elongated form with a longitudinal direction, a cross direction and an elevation height setting and is provided for the formation of a Fresnel reflector for light guidance with a plurality of folds, wherein at least two neighbouring fold sides (Ks, K) are folded relative to each other and a fold edge extends between these fold sides (Ks, K) in longitudinal direction of the light guiding slat, characterized in that the folds are substantially made by folding and/or bending of the band material and the light guiding slat has a total height (W) which is so small that the light guiding slat has a form to be coilable with a coiling radius of 1 m or less without any substantial plastic deformation, wherein the light guiding slat comprises a soft-annealed material having an elastic limit greater than 300 N/mm2.
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8. Method for the manufacture of fold-shape structured light guiding slats,
wherein the light guiding slat is made of a band material, has an elongated form with a longitudinal direction, a cross direction and an elevation height setting and is provided for the formation of a Fresnel reflector for light guidance with a plurality of folds, wherein at least two neighbouring fold sides (Ks, K) are folded relative to each other and a fold edge extends between these fold sides (Ks, K) in longitudinal direction of the light guiding slat, characterized in that the folds are substantially made by folding and/or bending of the band material and the light guiding slat has a total height (W) which is so small that the light guiding slat has a form to be coilable with a coiling radius of 1 m or less without any substantial plastic deformation, wherein the light guiding slat comprises a soft-annealed material having an elastic limit greater than 300 N/mm2, comprising roll forming, characterized in that in a first operational step, an overall contour of the light guiding slat, seen from above as concave or convex, is formed into a thin band, and in a second operational step, in a roll gap with a fold mould provided between a top roll for the upper side of the slat and a bottom roll for the under side of the slat, folds are formed-in, wherein the second step follows the first one or the first step follows the second.
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11. Method for the manufacture of fold-shape structured light guiding slats,
wherein the light guiding slat is made of a band material, has an elongated form with a longitudinal direction, a cross direction and an elevation height setting and is provided for the formation of a Fresnel reflector for light guidance with a plurality of folds, wherein at least two neighbouring fold sides (Ks, K) are folded relative to each other and a fold edge extends between these fold sides (Ks, K) in longitudinal direction of the light guiding slat, characterized in that the folds are substantially made by folding and/or bending of the band material and the light guiding slat has a total height (W) which is so small that the light guiding slat has a form to be coilable with a coiling radius of 1 m or less without any substantial plastic deformation, wherein the light guiding slat comprises a soft-annealed material having an elastic limit greater than 300 N/mm2, characterized in that one upper side of the light guiding slat is produced by roll embossing moulds with a structured top roll, wherein the under side is not embossed and is preferably smooth.
Specification