EP 0159534 B1 19870520 - ELONGATED LIGHT FITTING
Title (en)
ELONGATED LIGHT FITTING
Publication
Application
Priority
DE 3412162 A 19840331
Abstract (en)
[origin: US4621309A] An elongated luminaire is provided having at least one fluorescent lamp and a louver arranged therebelow. The louver consists of lamp-parallel longitudinal reflectors and reflecting cross-oriented lamellae arranged transversely thereto and subsequently of V-shape in cross section. The lamella legs have a parabolic shape in cross section. A light guiding plate is provided extending from one leg of each cross-oriented lamella, extending diagonally upwardly towards and almost adjacent to the lamp. Each light guiding plate substantially overlaps the interspace between neighboring cross-oriented lamella in the vertical projection. Thus, the entire light flux, emerging downwards, is directed, depending on the position of the cross-oriented lamellae and of the light guiding plates, in the desired direction into the lower hemisphere so that it is possible to obtain different light distribution curves of symmetrical or asymmetrical shape with characteristic preferred directions.
IPC 1-7
IPC 8 full level
F21V 11/02 (2006.01)
CPC (source: EP KR US)
F21V 11/02 (2013.01 - EP US); F21V 17/00 (2013.01 - KR); F21V 7/06 (2013.01 - EP US); F21Y 2103/00 (2013.01 - EP US)
Citation (examination)
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4621309 A 19861104; AT E27350 T1 19870615; AU 4070585 A 19851003; BR 8501487 A 19851126; CA 1248929 A 19890117; DD 231839 A5 19860108; DE 3412162 C1 19850829; DK 143685 A 19851001; DK 143685 D0 19850329; EP 0159534 A1 19851030; EP 0159534 B1 19870520; FI 851284 A0 19850329; FI 851284 L 19851001; JP S60246503 A 19851206; KR 850006472 A 19851005; NO 851176 L 19851001; ZA 851681 B 19851030
DOCDB simple family (application)
US 71592485 A 19850325; AT 85103159 T 19850319; AU 4070585 A 19850329; BR 8501487 A 19850329; CA 477903 A 19850329; DD 27463485 A 19850329; DE 3412162 A 19840331; DK 143685 A 19850329; EP 85103159 A 19850319; FI 851284 A 19850329; JP 6400185 A 19850329; KR 850001789 A 19850319; NO 851176 A 19850325; ZA 851681 A 19850306