EP 1309984 A1 20030514 - LIGHTING UNIT COMPRISING AT LEAST ONE, SUBSTANTIALLY U-SHAPED GAS DISCHARGE LAMP
Title (en)
LIGHTING UNIT COMPRISING AT LEAST ONE, SUBSTANTIALLY U-SHAPED GAS DISCHARGE LAMP
Title (de)
BELEUCHTUNGSEINHEIT MIT MINDESTENS EINER, IM WESENTLICHEN U-FÖRMIGEN GASENTLADUNGSLAMPE
Title (fr)
UNITE D'ECLAIRAGE COMPRENANT AU MOINS UNE LAMPE A DECHARGE GAZEUSE SENSIBLEMENT EN FORME DE U
Publication
Application
Priority
- DE 0103130 W 20010816
- DE 10039966 A 20000816
Abstract (en)
[origin: WO0215227A1] A substantially U-shaped gas discharge lamp (1), containing mercury for the gas discharge, is connected to a high-frequency driver circuit (6). To ensure that the gas discharge lamp (1) operates with the minimum loss and the maximum light yield possible, the respective output terminals (4, 5) of the high-frequency driver circuit (6) are not electrically grounded and the central section (11) of the gas discharge lamp (1) is capacitively coupled to an electric ground (M). This ensures a substantial reduction of the lamp current in the central section (11), thus lowering the thermal production of the gas discharge lamp (1) in said section, the latter becoming as a result the coldest place in the gas discharge chamber and the place for the condensation of the mercury. The mercury vapour pressure can thus be regulated and the light yield optimized.
IPC 1-7
IPC 8 full level
F21V 23/00 (2006.01); F21S 2/00 (2006.01); F21V 29/00 (2006.01); H01J 61/32 (2006.01); H01J 61/52 (2006.01); H01J 61/56 (2006.01); H01J 61/72 (2006.01); F21Y 103/37 (2016.01)
CPC (source: EP KR US)
H01J 61/30 (2013.01 - KR); H01J 61/32 (2013.01 - EP US); H01J 61/523 (2013.01 - EP US); H01J 61/56 (2013.01 - EP US); H01J 61/72 (2013.01 - EP US)
Citation (search report)
See references of WO 0215227A1
Citation (examination)
- US 5309062 A 19940503 - PERKINS RICK A [US], et al
- JP H04264426 A 19920921 - SONY CORP
- JP H08122776 A 19960517 - SEIKO EPSON CORP
- JP H03185795 A 19910813 - TOSHIBA LIGHTING & TECHNOLOGY
- US 5767630 A 19980616 - WILLIAMS JAMES M [US]
- JP 3220993 B2 20011022
- JP H01104643 U 19890714
- JP H0641335 Y2 19941026
- JP H0644279 U 19940610
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0215227 A1 20020221; DE 10039966 A1 20020307; EP 1309984 A1 20030514; JP 2004507044 A 20040304; KR 100846684 B1 20080716; KR 20030036696 A 20030509; US 2004051431 A1 20040318; US 6822398 B2 20041123
DOCDB simple family (application)
DE 0103130 W 20010816; DE 10039966 A 20000816; EP 01962641 A 20010816; JP 2002520267 A 20010816; KR 20037002095 A 20030213; US 36728003 A 20030219