Toothed daylight blinds

• US 6,845,805 B1
• Filed: 06/26/2000
• Issued: 01/25/2005
• Est. Priority Date: 06/26/1999
• Status: Expired due to Term

• Current Assignee: Köster, Helmut
• Original Assignee: Köster, Helmut
• Inventors: Köster, Helmut
• Primary Examiner(s): Johnson, Blair M.
• Application Number:
  US10/019,183
• Time in Patent Office: 1,674 Days
• Field of Search: 160/236, 359831-837, 359/606
• US Class Current: 160/236
• CPC Class Codes: E06B 2009/2417 Light path control; means to control reflection
• CPC Class Codes: E06B 9/386 Details of lamellae
• CPC Class Codes: F21S 11/00 Non-electric lighting devices or systems using daylight roofs with sky-light opening E04D13/03; sun blinds for windows with means for redirecting light onto ceiling of a room E06B9/00; hybrid lighting devices combining artificial and natural light F21S19/00; solar heat collectors F24S; solar cells or solar cell modules H01L31/00

Abstract

The flight guiding blinds of this invention are characterized in that the tooth sides showing towards sun incidence have an angle of inclination β essentially smaller in the area of the irradiation portion and larger at a larger distance from the irradiation portion, and the angles of inclination β increase following a concave curve path increasingly ascending from the irradiation area towards the reflection area, and at the upper side of light guiding blinds retro-reflected reaction is concentrated and a concentration zone is formed near irradiation portion and the concentration zone is disposed either in front of blind in the irradiation portion and/or on the underside of upper blind behind the irradiation portion, and on the upper side of a light guiding blind light radiation may be reflected at the individual teeth at and angle α_R<α_S.

Claims

1. Light guiding blinds having at least partly prism molded toothed upper sides, said prism-molding being provided at least in a first portion of the blinds disposed close to an irradiation area and serving for deflecting daylight, said prism-molded teeth of one prism side showing towards sun incidence and with one reverse prism side showing towards the interior space, and two blind edges each on the sun incidence side forming an incidence portion and two blind edges each on the interior space side forming a deflection portion, and a blend edge of a lower blind each in the incidence portion and a blind edge of an upper blind each in the deflection portion forming an angle relative to inner blind edges, and sun irradiation impinging from outside being back-reflected at an angle relative to the outer blind edges in the direction of the outer space, the front side being the sum incidence side, said blind edges being in parallel relative to each other, characterized in that

a) the individual prism-molded tooth sides shoaling towards sun incidence have angles of inclination relative to the horizontal, an angle of inclination being essentially smaller in the area of the incidence portion and an angle of inclination being larger at larger distance from the incidence portion, and

b) the angles of inclination of at least one of the individual teeth and the tooth sides of a first and a second tooth showing towards sun incidence increases following a concave curve path increasingly ascending starting from the irradiation area towards the interior space, and

c) at an upper side of light guiding blinds back-reflected radiation is concentrated and a concentration zone is formed near the incidence portion, said concentration zone is disposed in front of at least one of blinds in the incidence portion and on the underside of an upper blind behind the incidence portion, and

d) on the upper side of the light guiding blind back-reflected light radiation is back-reflected at the individual teeth at an angle wherein a back reflection angle into the outer space is smaller than the angle between two blind edges of a lower blind in the incidence portion and an upper blind in the deflection portion.

2. Light guiding blinds according to claim 1, characterized in that said light guiding blinds are tilted in a position through which at the upper side of said blinds retro-reflected light radiation impinges at an angle γ

<

90°

on the underside of blinds.

3. Light guiding blinds according to claim 1, characterized in that said light guiding blinds are manufactured by a rolling process as a flat blind having uniform tooth formation and by subsequent concave/convex molding of the blind the individual teeth are brought into their ascend angular position.

4. Light guiding blinds according to claim 1, characterized in that said light guiding blinds include at least one portion oriented towards the interior space which, at least vis-à

-vis a first portion, includes flatter tooth angles.

5. Light guiding blind according to claim 1, characterized in that said light guiding blinds are S-shaped.

6. Light guiding blinds according to claim 1, characterized in that said at least one first portion of said blinds and at least one second portion of said blinds serve as light guiding element for light guidance towards the interior space and wherein said first portion consists of at least said first and second teeth, the first tooth including on the side facing the sun light a flat angle of inclination, and at least said second tooth including a steeper angle of inclination, and that at least the sun-irradiated sides of the teeth are concavely arched.

7. Light guiding blinds according to claim 1, characterized in that said first portions of said blinds consist of at least one single tooth and at least the sun-irradiated side of said tooth are concavely arched, and the blinds include at least one second light guiding element for light guidance towards the interior space.

8. Light guiding blinds according to claim 1, characterized in that said light guiding blind upper sides are holograms.

9. Light guiding blinds according to claim 1, characterized in that on the underside in the area of a portion of blinds is disposed towards the irradiation area, energy converters for short-wave radiation into long-wave radiation and/or into current are provided.

10. Process of production of light guiding blinds according to claim 1 in a rotary process by feeding carrier material through a pair of rollers having structured surface, characterized in that microstructuring of said carrier material is obtained by means of a sol-gel coating into which either a prismatic-microstructured surface is embossed by a rotary embossing roller or a prismatic-microstructured surface is imprinted by a rotary printing roller, and which before, during or immediately after embossing or imprinting receives at least an initial curing by being fed electromagnetic radiation or by electron bombardment.

11. Process of production according to claim 10, characterized in that said sol-gel coating is a nanomer.

12. Process of production according to claim 10, characterized in that said sol-gel coating constitutes a synthesis of a viscous sol having a high solid content on an SiO₂ base, curing after thermal treatment to constitute a vitreous layer.

13. Process of production according to claim 10, characterized in that the substrate of said sol-gel coating constitutes a synthesis of inorganic-organic nano composites.

15. Process of production according to claim 10, characterized in that into said substrate of said sol-gel coating precious metal colloids are incorporated.

16. Process of production according to claim 10, characterized in that said substrate of said sol-gel coatings is formed of polymerizable silanes and cures through photo polymerization under the irradiation of ultraviolet light.

17. Process of production according to claim 10, characterized in that said substrate of said sol-gel coatings is produced by ceramic nano particles having a high metal oxide content (SiO₂, TiO₂).

18. Process of production according to claim 10, characterized in that said coatings consist of hydrolyzed methacryl-oxypropyl-trimetoxylane and said micro structuring is imprinted by an embossing roller.

19. Process of production according to claim 10, characterized in that said substrate of said sol-gel coatings consists of organically modified alkoxides and nano scale SiO₂ particles into which prismatic structures <

30 nm are imprinted.

20. Process of production according to claim 10, characterized in that said substrate of said sol-gel coatings is a metal colloid containing coating.

21. Process of production according to claim 10, characterized in that said sol-gel coating applied onto said work piece is sprayed, in a second working step, with redistinguishable ITI nano particles and this sprayed-on layer cures under ultraviolet light as a protective layer.

22. Process of production according to claim 10, characterized in that the prism-molded surfaces are covered with transparent conductive layers selected from the group consisting of at least one of In₂O₂, SnO₂ and Sb sprayed at high temperatures onto a hot work piece surface having temperature of more than 300°

C.

23. Process of production according to claim 10 or 20, characterized in that said prism-molded molding or printing rollers are structured having a low energy surface with self-structure nano particles so that with a view to repulsion effects a self-purifying surface results on the work piece.

24. Process of production according to claim 10, characterized in that said prism-molded molding or printing rollers are coated with a lubricant lacquer based on inorganic/organic nano composites.

25. Light guiding blinds according to claim 1, characterized in that said light guiding blinds include at least one portion oriented towards the interior space which is arch-shaped or plane.

14. Process of production according to clam 10, characterized in that said substrate of said sol-gel coating constitutes a polymerizing nano composite into which nano scale inorganic particles are incorporated.