EP 0221870 A1 19870513 - A lamp assembly.
Title (en)
A lamp assembly.
Title (de)
Lampenanordnung.
Title (fr)
Dispositif de lampes.
Publication
Application
Priority
- SE 8505306 A 19851107
- SE 8600730 A 19860218
Abstract (en)
A lamp assembly incorporating fluorescent tubes for lighting purposes, and a voltage unit for applying an electric voltage over the tubes. According to the invention two or more fluorescent tubes ( 1- 6) are connected to the voltage unit (8) in series with one another. The voltage unit is constructed to deliver, during a tube ignition phase, a sufficiently high voltage with sufficiently high frequency to ignite the tubes (1 - 6) without requiring the heating of a device within the tubes, and which unit is constructed to deliver, subsequent to ignition of the tubes (1 - 6) a sufficiently high voltage with sufficiently high frequency to operate the ignited tubes (1 - 6).
IPC 1-7
IPC 8 full level
H05B 41/00 (2006.01)
CPC (source: EP)
H05B 41/00 (2013.01)
Citation (search report)
- US 4008414 A 19770215 - AGNEW DONALD L
- GB 2108336 A 19830511 - GEN ELECTRIC
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL
DOCDB simple family (publication)
EP 0221870 A1 19870513; AU 6523486 A 19870602; WO 8703161 A1 19870521
DOCDB simple family (application)
EP 86850366 A 19861022; AU 6523486 A 19861022; SE 8600487 W 19861022