EP 0217290 B1 19900829 - TUBULAR LAMP
Title (en)
TUBULAR LAMP
Publication
Application
Priority
JP 14813985 U 19850930
Abstract (en)
[origin: EP0217290A2] A tubular lamp includes a tubular bulb (10). A plurality of coiled filaments (20) and short-circuit wires (22) are alternately arranged in the bulb, along the axis of the bulb. Each filament is coiled into a predetermined inner diameter, and has a luminant section (20a), and engagement sections (20b) located at both ends thereof. Each short-circuit wire has a lower hardness than the filament and a larger diameter than the inner diameter of the filament. The short-circuit wire has an insertion portion (22a) which is screwed into the engagement section of the corresponding filament
IPC 1-7
IPC 8 full level
CPC (source: EP)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0217290 A2 19870408; EP 0217290 A3 19881109; EP 0217290 B1 19900829; DE 3673738 D1 19901004; JP S6257369 U 19870409
DOCDB simple family (application)
EP 86113203 A 19860925; DE 3673738 T 19860925; JP 14813985 U 19850930