EP1040504B1 - Procede pour produire une electrode pour lampes a decharge - Google Patents
Procede pour produire une electrode pour lampes a decharge Download PDFInfo
- Publication number
- EP1040504B1 EP1040504B1 EP98916837A EP98916837A EP1040504B1 EP 1040504 B1 EP1040504 B1 EP 1040504B1 EP 98916837 A EP98916837 A EP 98916837A EP 98916837 A EP98916837 A EP 98916837A EP 1040504 B1 EP1040504 B1 EP 1040504B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- pin
- electrode body
- wire
- discharge lamps
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000010618 wire wrap Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
-
- 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
Definitions
- the invention relates to a method for producing a Electrode for discharge lamps with an at least partially enclosed by an electrode body, the Electrode body is formed from a wire coil and attached one or more fixed points is welded to the pin.
- Electrodes for discharge lamps with an at least partially surrounded by an electrode body, in which the Electrode body is formed from a wire coil are in Discharge lamps used to discharge electrons during a gas discharge hand in or take up.
- the electrodes each contain a pen, from the free end of which electrons each exit or enter the pen at that end, where the pen in the neighborhood of its free end usually is partially enclosed by a heat sink, most of the time is formed from a wire wound around the pin.
- the pin is made of a high-melting conductive material, Usually made of tungsten, and can be made from additives Contain thorium, lanthanum, cerium and yttrium.
- Electrodes for discharge lamps are known in which the heat sink or electrode body formed from a wire coil and is welded to the pin at one or more fixed points is.
- these electrodes have the disadvantage that that the wire winding with insufficient strength with the pin is connected and therefore not a robust unit made of electrode body and pen is formed.
- the object of the invention is a method for the production to create an electrode for discharge lamps, in which the Electrode body is firmly connected to the pin and with this forms a robust unit.
- the Electrode body is formed from a wire coil, the Electrode body at one or more fixed points using laser beams or welded to the pin by means of electron beams.
- the one Wire wound electrode body formed on one or more Fixed points using laser beams or electron beams is welded to the pin, is in the electrode achieved that in addition to the frictional force caused by the elastic preload of the wire wrap surrounding the pin is achieved further anchoring of the electrode body to the pin by directly welding the two components together at least anywhere where these components contact each other is achieved. Thereby increases the overall strength with which the Electrode body is connected to the pin. About that is also affected by the action of the laser beam Pin surface causes the same to deform, which a local radius change or radius increase for Consequence. Due to this deformation, the solid is prevents slipping over the pen or over it to be pushed.
- At least one end is advantageous for the electrode according to the invention of the wire winding, preferably the outside exposed end of the wire winding, by means of laser beams severed to it after the wrapping process separate the remaining winding wire. That way it enables wire wrapping for electrodes particularly quickly and inexpensive to manufacture.
- This end of the wire winding will be embodiments down to the outside diameter of the wire winding melted back so that it does not, or at most protrudes insignificantly from the wire winding. This is a wire winding that is homogeneous in its external dimensions created the optimal properties regarding Has effectiveness and longevity.
- Electrode pin 13, 13 ' In the discharge lamp 10 shown in FIG. 1 two electrodes 11, 11 'within a quartz glass bulb 12 so arranged that one end each, also called Electrode pin 13, 13 'is referred to in the Glass bulb 12 is welded.
- the molybdenum foils 14, 14 ' act as Power supply elements within the glass bulb to the Electrode pins 13, 13 '.
- the electrodes 11, 11 ' have each have a free electrode end 16, also called a “tip”, 16 ', with a between the electrode ends 16, 16' Electron exchange takes place in such a way that each one electrode end emits electrons and that each other end of the electrode forms an input for electrons.
- the electrodes 11, 11 ' are each in the region of their ends 16, 16 'from an electrode body or heat sink 17, 17' enclosed.
- Fig. 2 is a conventional electrode 11, as in a discharge bulb 12 according to FIG. 1 is used, shown in a side view.
- the electrode body or heat sink 17 is made of a around the electrode 11 coiled wire formed, the ends 17a and 17b exposed.
- the wire can, as in the figure shown, two layers in different Directions.
- FIG. 3 11 designate the same reference numbers as the same components as in the electrode shown in Fig. 2.
- the electrode shown in FIG. 2 has the electrode shown in FIG. 3 electrode shown four fixed points 19, 19 ', 19 "and 19 '' ', 1 where the wire winding 17 with the Electrode pin 18 is spot welded.
- the number the fixed points 19, 19 ', 19 "and 19"' is in the illustrated embodiment only as an example. So is both a larger and a smaller number of Fixed points conceivable. Especially when a fixed point is large volume, it is in the sense of the solution of sufficient object of the invention, if only a single fixed point 19 is provided.
- ends 17a and 17b of the wire winding 17 at the Production of the same by means of laser beams from the wire severed for the winding of the winding 17th was used.
- the ends 17a and 17b of the wire winding 17 are on the respective outer diameter of the Wire coils 17 melted back so that they are in contrast to the wire ends 17a and 17b that shown in Fig. 2 Do not step the electrode over the wire winding 17.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Laser Beam Processing (AREA)
Claims (4)
- Procédé de fabrication d'une électrode (11, 11') pour des lampes à décharge (10) comprenant une tige (13, 13') au moins partiellement entourée d'un corps d'électrode (17, 17'), le corps d'électrode (17, 17') étant formé d'un enroulement de fil et étant soudé à la tige (13, 13') au niveau d'un ou de plusieurs points de fixation (19, 19', 19", 19"'), caractérisé en ce que le corps d'électrode (17, 17') est soudé à la tige (13, 13') par faisceau laser.
- Procédé de fabrication d'une électrode (11, 11') pour des lampes à décharge (10) comprenant une tige (13, 13') au moins partiellement entourée d'un corps d'électrode (17, 17'), le corps d'électrode (17, 17') étant formé d'un enroulement de fil et étant soudé à la tige (13, 13') au niveau d'un ou de plusieurs points de fixation (19, 19', 19", 19"'), caractérisé en ce que le corps d'électrode (17, 17') est soudé à la tige (13, 13') par faisceau d'électrons.
- Procédé selon la revendication 1 ou 2, caractérisé en ce qu'au moins une extrémité de l'enroulement de fil (17, 17') est sectionnée par faisceau laser.
- Procédé selon la revendication 1 ou 2, caractérisé en ce qu'au moins une extrémité (17a, 17b) de l'enroulement de fil (17, 17') est refondue sur le diamètre extérieur de l'enroulem de fil (17, 17').
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757032 | 1997-12-20 | ||
DE19757032A DE19757032A1 (de) | 1997-12-20 | 1997-12-20 | Elektrode für Entladungslampen |
PCT/DE1998/000623 WO1999033082A1 (fr) | 1997-12-20 | 1998-03-04 | Electrode pour lampes a decharge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1040504A1 EP1040504A1 (fr) | 2000-10-04 |
EP1040504B1 true EP1040504B1 (fr) | 2003-06-18 |
Family
ID=7852844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98916837A Expired - Lifetime EP1040504B1 (fr) | 1997-12-20 | 1998-03-04 | Procede pour produire une electrode pour lampes a decharge |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1040504B1 (fr) |
JP (1) | JP2001527271A (fr) |
AT (1) | ATE243361T1 (fr) |
DE (2) | DE19757032A1 (fr) |
WO (1) | WO1999033082A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4400095B2 (ja) * | 2003-06-03 | 2010-01-20 | ウシオ電機株式会社 | ショートアーク型超高圧水銀ランプ |
JP4748466B1 (ja) | 2010-04-02 | 2011-08-17 | 岩崎電気株式会社 | 放電灯用電極及びその製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1888272U (de) * | 1964-02-27 | Westmghouse Flectric Corporation Pittsburgh Pa (V St A) \ertr Dipl Ing J Dellian Pat Anw München | Elektrode fur eine Entladungslampe | |
GB1049057A (en) * | 1964-06-11 | 1966-11-23 | Sciaky David | Electron beam welding out of vacuum |
FR2087545A5 (fr) * | 1970-05-22 | 1971-12-31 | Lampes Sa | |
US4340836A (en) * | 1978-09-11 | 1982-07-20 | General Electric Company | Electrode for miniature high pressure metal halide lamp |
US4952841A (en) * | 1985-07-17 | 1990-08-28 | U.S. Philips Corporation | High-pressure discharge lamp with improved electrodes |
DE4035361A1 (de) * | 1990-11-07 | 1992-05-14 | Licentia Gmbh | Verfahren zum herstellen einer direkt geheizten kathode |
US5451837A (en) * | 1994-09-01 | 1995-09-19 | Osram Sylvania Inc. | Cathode for high intensity discharge lamp |
-
1997
- 1997-12-20 DE DE19757032A patent/DE19757032A1/de not_active Withdrawn
-
1998
- 1998-03-04 WO PCT/DE1998/000623 patent/WO1999033082A1/fr active IP Right Grant
- 1998-03-04 AT AT98916837T patent/ATE243361T1/de active
- 1998-03-04 EP EP98916837A patent/EP1040504B1/fr not_active Expired - Lifetime
- 1998-03-04 JP JP2000525903A patent/JP2001527271A/ja active Pending
- 1998-03-04 DE DE59808767T patent/DE59808767D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1040504A1 (fr) | 2000-10-04 |
DE19757032A1 (de) | 1999-07-01 |
ATE243361T1 (de) | 2003-07-15 |
DE59808767D1 (de) | 2003-07-24 |
JP2001527271A (ja) | 2001-12-25 |
WO1999033082A1 (fr) | 1999-07-01 |
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