Energy efficient skylight and blind

Details Energy efficient skylight and blind Energy efficient skylight and blind

1992-01-23

1993-04-20

Wintercorn, Richard A.

Optical: systems and elements

Building interior illumination with reflected, refracted or...

Slats or strips

G02B 1700, G02B 2700

Patent

active

052047776

ABSTRACT:
An energy-efficient barrier uses thin slats, on one side of which are formed a number of reflective surfaces. The reflective surfaces are oriented at an angle, with respect to the face of the slat, to maximize reflection of the rays of the sun. The parallel reflective surfaces are formed as a series of ridges along the length of a slat and as the treads of a series of stairsteps formed along the length of a slat. The slats can be formed of extruded material with the reflective surfaces formed of reflective material which is polated on V-grooves formed in the slats. The slats are oriented in relation to the direct rays of the sun to pass the direct rays of the winter sun between the wider faces of the slats. The reflective surfaces on each slat are also aligned to reflect the direct rays of the summer sun. In a skylight assembly, one or more spacer members are provided having complementary slots formed therein for engagement with corresponding slots formed in the slats to properly align the slats with respect to the sun. The slats can be fixed as in a skylight, or variable such as in a Venetian blind. Deflectors attached to the trailing edges of the slats deflect the direct sunlight into a more vertical path. A Fresnel lens concentrator and reflector assembly directs winter sunlight into a structure, while directing summer sunlight away from the structure. Sunlight is guided through hollow light guides from a skylight assembly to one or more locations within a building.

REFERENCES:
patent: 3511559 (1970-05-01), Foster
patent: 4022186 (1977-05-01), Northrup, Jr.
patent: 4509825 (1985-04-01), Otto et al.
patent: 4517960 (1985-05-01), Bartenbach
patent: 4723535 (1988-02-01), Lew
patent: 4805984 (1989-02-01), Cobb, Jr.
patent: 4841672 (1989-06-01), Nebhuth et al.

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