Sunshade of the type of a venetian blind

US6227280A · kind A · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Harry Wirth · Freiburg im Breisgau, DE
• Andreas Gombert · Glückstadt, DE
• Volker Willwer · Glückstadt, DE
• Jorg Jungjohann · Glückstadt, DE

Key dates

• Filing date: Aug 9, 1999
• Grant date: May 8, 2001
• Expiry date: Aug 9, 2019

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E06B2009/2417
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A Venetian type sunshade comprising a plurality of parallel lamellae with horizontally extending respective longitudinal axes, which are adapted to be rotated about their respective longitudinal axes using an adjusting mechanism. The lamellae, or a layer applied on the upper side of the lamellae, consists of a material transparent to sunlight. Each lamella has an upper side, a plurality of ribs, and a third face. Each rib has a first face arranged obliquely relative to the upper side of the lamella and adapted to be irradiated by the sun in an approximately vertical direction, and a second face which is arranged flush and at an acute angle of roughly 45.degree. relative to the first flat element. The third face is approximately orthogonal to the second faces. Adjacent ribs define a mutual spacing which permits a low shade irradiation and emission through the first faces when there is approximately perpendicular irradiation of the first flat elements, with the optical connection between the mutual spacing being within the thickness between the upper side of a lamella and the third face.