ATE138497T1 - CATHODE SHIELD FOR GAS DISCHARGE LAMPS - Google Patents

CATHODE SHIELD FOR GAS DISCHARGE LAMPS

Info

Publication number
ATE138497T1
ATE138497T1 AT92850033T AT92850033T ATE138497T1 AT E138497 T1 ATE138497 T1 AT E138497T1 AT 92850033 T AT92850033 T AT 92850033T AT 92850033 T AT92850033 T AT 92850033T AT E138497 T1 ATE138497 T1 AT E138497T1
Authority
AT
Austria
Prior art keywords
plate
tube
central hole
support devices
apertured
Prior art date
Application number
AT92850033T
Other languages
German (de)
Inventor
Ake Bjoerkman
Original Assignee
Luminova Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luminova Ab filed Critical Luminova Ab
Application granted granted Critical
Publication of ATE138497T1 publication Critical patent/ATE138497T1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

A mica apertured plate (10, 20) has been developed for the purpose of manufacturing long-life fluorescent tubes in machines with the tubes lying horizontally, where diffusion pumping cannot be performed by the introduction of mercury droplets into the tube, but where it is necessary to purge the tube with alternating tube evacuating steps. In the case of one embodiment, this plate has a circular shape and is provided with slots (12, 13) which extend from the periphery of the circular plate in towards a central hole (11), such as to form intermediate tongues (14). The apertured plate is supported by support devices (8, 9) at a constant distance from the lamp electrode (3), such as to form between the plate (10) and the lamp tube a gap in which electrons and ions of the emission material released from the electrode (3) recombine. In another embodiment, the apertured plate (20) is oval and is provided with a central hole (21) and with a recess (23) which is located in the edge of the plate and in which support devices can engage. <IMAGE>
AT92850033T 1992-02-13 1992-02-13 CATHODE SHIELD FOR GAS DISCHARGE LAMPS ATE138497T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92850033A EP0555619B1 (en) 1992-02-13 1992-02-13 Cathode screen for gas discharge lamps

Publications (1)

Publication Number Publication Date
ATE138497T1 true ATE138497T1 (en) 1996-06-15

Family

ID=8212219

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92850033T ATE138497T1 (en) 1992-02-13 1992-02-13 CATHODE SHIELD FOR GAS DISCHARGE LAMPS

Country Status (4)

Country Link
EP (1) EP0555619B1 (en)
AT (1) ATE138497T1 (en)
DE (1) DE69210986T2 (en)
DK (1) DK0555619T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE530754C2 (en) * 2006-01-25 2008-09-02 Auralight Int Ab Compact fluorescent cathode screen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE358007A (en) *
FR803474A (en) * 1935-03-20 1936-10-01 Philips Nv Discharge tube filled with gas and / or vapor
NL6514352A (en) * 1965-11-05 1967-05-08
SE435332B (en) * 1979-11-07 1984-09-17 Lumalampan Ab CATHOD UNIT OF LIGHT
DE69828910T2 (en) * 1998-07-07 2006-01-12 Mrdc Ltd., Epping ORAL FOOD BOTTLE

Also Published As

Publication number Publication date
DK0555619T3 (en) 1996-09-09
EP0555619A1 (en) 1993-08-18
EP0555619B1 (en) 1996-05-22
DE69210986D1 (en) 1996-06-27
DE69210986T2 (en) 1996-12-19

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee