EP1465235A2 - Lampe à décharge - Google Patents
Lampe à décharge Download PDFInfo
- Publication number
- EP1465235A2 EP1465235A2 EP20040002473 EP04002473A EP1465235A2 EP 1465235 A2 EP1465235 A2 EP 1465235A2 EP 20040002473 EP20040002473 EP 20040002473 EP 04002473 A EP04002473 A EP 04002473A EP 1465235 A2 EP1465235 A2 EP 1465235A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- discharge lamp
- discharge
- section
- strand
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
-
- 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
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J61/366—Seals for leading-in conductors
- H01J61/368—Pinched seals or analogous seals
Definitions
- the invention relates to a discharge lamp according to the preamble of the claim 1.
- One end is used for welding to the current feedthrough, while the other end is designed as an electrode head that goes into the interior protrudes into the discharge vessel and on which the discharge arc of the gas discharge attaches.
- the coupled electrode head offers the discharge arc of the gas discharge a better starting point than the ends of the individual wires.
- FIG. 2 shows details of the discharge vessel 1 and the current feedthroughs 2 or 3.
- the sealed ends 11, 12 of the discharge vessel 1 each have one Power bushing 2, 3 on.
- the current feedthroughs 2, 3 each have a gas-tight seal molybdenum foil 21 or 31 embedded in the respective end 11 or 12.
- the side of the respective side facing away from the interior 10 of the discharge vessel 1 Molybdenum foil 21 or 31 is welded to a molybdenum wire 22 or 32, which protrudes from the corresponding sealed end 11 or 12.
- the side of the respective one facing the interior 10 of the discharge vessel 1 Molybdenum foil 21 and 31 is welded to an electrode 4 and 5, respectively protrude into the discharge space 10.
- Both electrodes 4, 5 are designed as strands. They each consist of eight tungsten wires that are woven together or are twisted. To achieve the purpose of the invention, it would suffice to use only that extending into the sealed end 11 of the discharge vessel 1 403 to form the electrode 4 as a strand.
- FIG. 3 is a schematic representation of a top view of the electrode 4 produced in this way shown.
- This electrode has a thickness of 0.35 mm.
- the electrode 4 according to the invention with a conventional solid, Comparable rod-shaped electrode made of tungsten, which has a diameter of 0.28 mm.
- the eight tungsten wires each describe a helix, which extends from the first end 401 to the second 402 of the electrode 4.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10313514 | 2003-03-25 | ||
DE2003113514 DE10313514A1 (de) | 2003-03-25 | 2003-03-25 | Entladungslampe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1465235A2 true EP1465235A2 (fr) | 2004-10-06 |
Family
ID=32842166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040002473 Withdrawn EP1465235A2 (fr) | 2003-03-25 | 2004-02-04 | Lampe à décharge |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1465235A2 (fr) |
DE (1) | DE10313514A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006099850A2 (fr) * | 2005-03-22 | 2006-09-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe comportant une alimentation electrique et une electrode |
WO2007055958A2 (fr) | 2005-11-09 | 2007-05-18 | General Electric Company | Lampe à décharge à haute intensité avec contrôle de fissurage amélioré et procédé de fabrication |
WO2008119375A1 (fr) * | 2007-03-29 | 2008-10-09 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe à décharge, notamment lampe à décharge haute pression |
NL2004204A (en) * | 2009-02-09 | 2010-08-10 | Ushio Electric Inc | High pressure discharge lamp. |
-
2003
- 2003-03-25 DE DE2003113514 patent/DE10313514A1/de not_active Withdrawn
-
2004
- 2004-02-04 EP EP20040002473 patent/EP1465235A2/fr not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006099850A2 (fr) * | 2005-03-22 | 2006-09-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe comportant une alimentation electrique et une electrode |
WO2006099850A3 (fr) * | 2005-03-22 | 2007-04-26 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Lampe comportant une alimentation electrique et une electrode |
WO2007055958A2 (fr) | 2005-11-09 | 2007-05-18 | General Electric Company | Lampe à décharge à haute intensité avec contrôle de fissurage amélioré et procédé de fabrication |
WO2007055958A3 (fr) * | 2005-11-09 | 2007-09-20 | Gen Electric | Lampe à décharge à haute intensité avec contrôle de fissurage amélioré et procédé de fabrication |
US7952283B2 (en) | 2005-11-09 | 2011-05-31 | General Electric Company | High intensity discharge lamp with improved crack control and method of manufacture |
WO2008119375A1 (fr) * | 2007-03-29 | 2008-10-09 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe à décharge, notamment lampe à décharge haute pression |
NL2004204A (en) * | 2009-02-09 | 2010-08-10 | Ushio Electric Inc | High pressure discharge lamp. |
US8115389B2 (en) | 2009-02-09 | 2012-02-14 | Ushio Denki Kabushiki Kaisha | High pressure discharge lamp |
Also Published As
Publication number | Publication date |
---|---|
DE10313514A1 (de) | 2004-10-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20071101 |