LIGHTING DEVICE

WIPO Patent Application WO/2012/076151

A3

The invention relates to a lighting device of the "increased safety" ignition protection type which comprises at least one fluorescent lamp (2) and at least one plug-on apparatus for being plugged onto one end of the at least one fluorescent lamp (2), wherein the plug-on apparatus has a longitudinal axis (L) and comprises a first sleeve (12), said plug-on apparatus being characterized in that the first sleeve (12) has a first region (16) with a first diameter (d) and has a second region (18) which is arranged next to the first region (16) in the axial direction relative to the longitudinal axis (L) and has a second diameter (D), wherein the first diameter (d) is smaller than the second diameter (D) at least in a state in which the sleeve (12) is plugged onto the end of the fluorescent lamp (2), wherein the extent of the second region (18) of the sleeve (12) in the axial direction relative to the longitudinal axis (L) is defined such that one region of a filament of the fluorescent lamp (2) is surrounded.

BOTHE HEINO (DE)
JOHANNSMEYER ULRICH (DE)
DINTER KATRIN (DE)
KULESSA RAINER (DE)

PCT/EP2011/006101

August 09, 2012

December 06, 2011

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BUNDESREP DEUTSCHLAND (DE)
BOTHE HEINO (DE)
JOHANNSMEYER ULRICH (DE)
DINTER KATRIN (DE)
KULESSA RAINER (DE)

F21V17/04; F21V25/12; F21V29/00; H01J61/52; F21Y103/00

WO2002001680A1

2002-01-03

DE3744253A1	1989-07-06
JPS6063872A	1985-04-12
US4156893A	1979-05-29
DE3837548A1	1990-05-10
AT382226B	1987-01-26
DE3112962A1	1982-10-14
US4229780A	1980-10-21

ANDREAS, Friedrich (Lins & Partner GbRTheodor-Heuss-Straße 1, Braunschweig, DE)

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