Stepped lamella for guiding light radiation

• US 6,240,999 B1
• Filed: 07/31/1997
• Issued: 06/05/2001
• Est. Priority Date: 09/17/1994
• Status: Expired due to Fees

• Current Assignee: Köster, Helmut
• Original Assignee: Köster, Helmut
• Inventors: Köster, Helmut
• Primary Examiner(s): Purol, David M.
• Application Number:
  US08/894,498
• Time in Patent Office: 1,405 Days
• Field of Search: 160/236, 160/173.R, 160/107, 160/176.1 R, 160/166.1 R, 49/921
• US Class Current: 160/176.10R
• CPC Class Codes: B21B 1/227 Surface roughening or texturing
• CPC Class Codes: E06B 2009/2417 Light path control; means to control reflection
• CPC Class Codes: E06B 9/24 Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blindsoperating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00
• CPC Class Codes: E06B 9/28 with horizontal lamellae, e.g. non-liftable louvre windows or gratings E06B7/08
• CPC Class Codes: E06B 9/386 Details of lamellae
• CPC Class Codes: Y02A 30/24 Structural elements or technologies for improving thermal insulation
• CPC Class Codes: Y02B 80/00 Architectural or constructional elements improving the thermal performance of buildings

Abstract

The present invention relates to lamellae for light deflection and for scattering radiation, particularly sun radiation. The lamellae comprise two portions wherein the first portion is graded like stairs. It serves for scattering sun radiation. The second portion is oriented towards the interior space and is preferably convexly arched ascending towards the interior space. Sun radiation impinging onto the second portion is deflected to the ceiling of the interior space and into the space depth. The tread-board and the second lamella portion are disposed at an angle Ω relative to each other.

Claims

1. Lamellae (10, 11, 12, 13, 23, 24, 25, 69, 83, 84, 206, 207) for light deflection and scattering of radiation comprising a first portion (5, 26, 27, 28, 208, 209) disposed in a radiation area having a step-like gradation of lamella leaves consisting of treadboards (6, 35, 36, 45, 71, 72, 73, 74, 104, 106, 108) and risers (34, 37, 46, 103, 105, 107) where an inclination β

of at least a first treadboard at least in a starting point forms an incline from the radiation area to an interior space (33), and a second portion (4, 29, 30, 31), characterized in that;

(a) at least an upper side of said first portion includes at least one treadboard with an inclination deviating at least at a starting point (8, 51, 54, 118) relative to at least portions of said second portion (6, 66, 53, 29, 30, 31),

(b) the inclination β

at least in the starting points (8, 51, 54) of said first treadboard (16) and at least parts of said second portion (6, 66, 53) form an obtuse angle Ω

relative to each other, and

(c) daylight radiation impinging onto lamellae (10, 11, 12, 13, 23, 24, 25, 69, 83, 84, 206, 207) is deflected by said first portion (5, 26, 27, 28, 208, 209) into the radiation area and daylight impinging onto said second portion (4, 29, 30, 31) is deflected into the interior space (33).

2. Lamellae according to claim 1, characterized in that a tangent inclination of said second portion (17, 29, 30, 31) towards an interior space (33) is an ascending angle γ

increasing between tangent and horizontal.

3. Lamellae according to claim 1, characterized in that in a cross section, the starting point (8, 51, 54) of the lamella (10, 11, 12, 13, 23, 24, 25, 69, 83, 84, 206, 207) constitutes the starting point of said first portion (5, 26, 27, 28, 208, 209) and that an endpoint (9, 52, 80) of the lamella constitutes the endpoint of said second portion (4, 29, 30, 31) and that said first portion B₁ and said second portion B₂ are in a width relation relative to the total width as

4. Lamellae according to claim 1, characterized in that on the lamellae vertically arranged one upon an other, between the starting point (51) of an upper lamella (23) and the endpoint (52) of a lower lamella (24), a shadow line extends at an angle α

₃ of

5. Lamellae according to claim 1, characterized in that at least the endpoint (75) of a last step of said first portion is on a straight line connecting the starting point (79) of said first portion with the endpoint (80) of said second portion.

6. Lamellae according to claim 5, characterized in that a straight line (7) between the starting point (8) of a lamella (13) in the radiation area and the endpoint (9) of this lamella forms, to the interior space (33), an angle γ

₁ relative to the horizontal of

7. Lamellae according to claim 1, characterized in that said second portion (4, 29, 30, 31) forms a lamella strip disposed to the interior space (33), said lamella strip being arched and formed of at least one of straight segments and arched segments, and that a course of a curve of said second portion or of the segments thereof is ascending starting from said first portion towards the interior space.

8. Lamellae according to claim 1, characterized in that at least one of risers (34, 37, 46, 103, 105, 107) and treadboards (16, 35, 36, 45, 71, 72, 73, 74, 104, 106, 108) of said first portion (5, 26, 27, 28, 208, 209) are concavely arched and that a ratio of treadboard to riser at least in a last gradation (108/107) is larger than at the first gradation (104/103) in the radiation area.

9. Lamellae according to claim 8, characterized in that at least risers of said first portion which are most distant from the radiation cross section are convexly shaped.

10. Lamellae according to claim 1, characterized in that treadboards and risers (208, 209) of the lamellae (206, 207) become larger as from the radiation cross section towards the direction of said second portion.

11. Lamellae according to claim 1, characterized in that lamellae (83, 84) are provided in a air intermediate space of an insulation glazing (80, 81).

12. Lamellae according to claim 1, characterized in that lamellae (69) on a sun incident side are combined with a light permeable cover (70).

13. Lamellae according to claim 1, characterized in that lamellae (206, 207) include grooves, or hollow cavities, respectively, at the underside thereof for respectively receiving reinforcements and supporting elements (214, 215).

14. Lamellae according to claim 1, characterized in that lamellae (206, 207) are tilted by magnetic pulse in that each individual lamella is rotated by swivel arms provided on either side and in that said swivel arms are attracted by alternating magnets, or elements (219, 220) equipped with alternating magnets are attracted or repulsed from them.

15. Lamella according to claim 1, characterized in that lamellae are arranged horizontally and one upon the other and that the lamellae are installed and rotatably supported in a sun shade on the facade or roof area.

16. Lamellae according to claim 1, characterized in that the lamella is arranged as an individual lamella between a high window are and a low window area and the lamella comprises a plurality of elements and one individual lamella have a width of up to more than 1 m.

17. Lamellae according to claim 16, characterized in that on at least one of an underneath the lamella on the outside or the inside space side a light source (92) is provided and the lamellae forms a reflector screen for artificial radiation on a lower side and for reflection of day light on an upper side.

18. Lamellae according to claim 1, characterized in that sun radiation reflected from said first portion is deflected essentially by one or two reflections into radiation cross section and that radiation reflected from said second portion is deflected by one single reflection into the interior space at an angle >

0.