Global Patent Index - EP 1059659 A1

EP 1059659 A1 2000-12-13 - SILENT DISCHARGE TUBE AND ITS USE METHOD

Title (en)

SILENT DISCHARGE TUBE AND ITS USE METHOD

Title (de)

STILLE ENTLADUNGS-RÖHRE UND ANWENDUNGS-VERFAHREN DERSELBEN

Title (fr)

TUBE A DECHARGE SILENCIEUX ET PROCEDE D'UTILISATION

Publication

EP 1059659 A1 (EN)

Application

EP 99961407 A

Priority

  • JP 9907323 W
  • JP 37247198 A

Abstract (en)

The power consumption of a silent discharge lamp having a structure in which an inner tube is disposed in the interior of an outer tube is reduced. In addition, the lifetime is extended. For this purpose, in a silent discharge lamp including: a discharge vessel which has an outer tube and an inner tube, the inner tube being disposed in an interior of the outer tube, and in which a space that is formed by being surrounded by an inner face of the outer tube and an outer face of the inner tube is filled with a discharge gas; an outside electrode provided on an outer face of the outer tube; and an inside electrode provided on an inner face of the inner tube, one of the outside electrode and the inside electrode is provided over all circumference of a tube, and the other one is provided in a part of a tube circumference, thereby allowing discharge to be performed in the part of the tube circumference. The electrode is moved at the end of the lifetime, so that a face in which discharge is not caused is newly used. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01J 65/00

IPC 8 full level (invention and additional information)

H01J 61/30 (2006.01); H01J 65/04 (2006.01)

CPC (invention and additional information)

H01J 65/046 (2013.01); H01J 61/30 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 1059659 A1 20001213; EP 1059659 A4 20020313; WO 0041215 A1 20000713

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB

2002-09-04 [18W] WITHDRAWN

- Date of withdrawal: 20020521

2002-03-13 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20020125

2002-03-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-03-13 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 01J 65/00 A, 7H 01J 65/04 B

2000-12-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000828

2000-12-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE