EP 1061556 A1 20001220 - Lamp for a headlight provided with a reflector
Title (en)
Lamp for a headlight provided with a reflector
Title (de)
Lampe für Scheinwerfer mit einem Reflektor
Title (fr)
Lampe pour projecteur muni d'un réflecteur
Publication
Application
Priority
FR 9907562 A 19990615
Abstract (en)
The incandescent lamp has a filament consisting of several filament segments each made in a rectilinear spiral parallel to each other and arranged in several layers, see Fig. 3. In a group of filament segments, the rectilinear filaments are arranged along a virtual developed curve. The lamp has a first group of filaments (1,2,3,4) arranged along a first developed curved surface (30A) and a second group of filaments (5,6,7,8) along a second developed curved surface (30B).
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01K 1/14 (2013.01 - EP US)
Citation (search report)
- [A] GB 163478 A 19210519 - FRED BRIGHOUSE
- [A] GB 797828 A 19580709 - BRITISH THOMSON HOUSTON CO LTD
- [A] EP 0470752 A1 19920212 - STRAND LIGHTING LTD [GB]
- [DA] WO 9301613 A1 19930121 - CUNNINGHAM DAVID W [US]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1061556 A1 20001220; EP 1061556 B1 20050330; CN 1124429 C 20031015; CN 1280269 A 20010117; DE 60019023 D1 20050504; DE 60019023 T2 20060330; FR 2795232 A1 20001222; JP 2001015085 A 20010119; JP 4603656 B2 20101222; US 6525452 B1 20030225
DOCDB simple family (application)
EP 00202012 A 20000607; CN 00124272 A 20000612; DE 60019023 T 20000607; FR 9907562 A 19990615; JP 2000176796 A 20000613; US 59391500 A 20000614