EP1635378A2 - Lampe électrique avec joint à feuille de molybdène - Google Patents

Lampe électrique avec joint à feuille de molybdène Download PDF

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Publication number
EP1635378A2
EP1635378A2 EP05017525A EP05017525A EP1635378A2 EP 1635378 A2 EP1635378 A2 EP 1635378A2 EP 05017525 A EP05017525 A EP 05017525A EP 05017525 A EP05017525 A EP 05017525A EP 1635378 A2 EP1635378 A2 EP 1635378A2
Authority
EP
European Patent Office
Prior art keywords
molybdenum foil
molybdenum
power supply
metal pin
electric lamp
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Withdrawn
Application number
EP05017525A
Other languages
German (de)
English (en)
Other versions
EP1635378A3 (fr
Inventor
Roland Rittner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1635378A2 publication Critical patent/EP1635378A2/fr
Publication of EP1635378A3 publication Critical patent/EP1635378A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H01J5/38—Pinched-stem or analogous seals
    • 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 an electric lamp according to the preamble of patent claim 1.
  • Such a lamp is disclosed, for example, in US Pat. No. 2,219,438.
  • This document describes a lamp having a molybdenum foil seal of the lamp vessel, one end of the molybdenum foil of the molybdenum foil seal being connected to two metal foils serving as a welding aid, which in turn are fixed in the slot of a slotted current feeding wire by spot welding.
  • the electric lamp according to the invention has at least one Molybdänfolienabdichtung a lamp vessel and at least one slotted metal pin, wherein the at least one slotted metal pin with a molybdenum foil of the at least one Molybdänfolienabdichtung is electrically connected.
  • one end of the molybdenum foil is arranged and fixed in the slot of the at least one slotted metal pin.
  • the metal pin is preferably made of a metal of the group of tungsten, tungsten alloy, molybdenum and molybdenum alloy and, in the preferred embodiments, is formed either as a power supply wire or as a gas discharge electrode.
  • the incandescent lamp 3 illustrated in FIG. 3 has a quartz glass lamp vessel 30 with a sealed end 31 which has two molybdenum foils 32, 33 embedded in the sealed end 31.
  • an incandescent filament 34 is arranged, the filament outlets 341, 342 are each welded to one of the molybdenum foils 32 and 33, respectively.
  • the discharge lamp 4 shown in FIG. 4 has a quartz glass lamp vessel 40 with a sealed end 41 which has two molybdenum foils 42, 43 embedded in the sealed end 41.
  • two gas discharge electrodes 44, 45 are arranged from tungsten wire, which are each welded to one of the molybdenum foils 42 and 43, respectively.
  • the molybdenum foils 42, 43 are each arranged in a slot of the gas discharge electrodes 44, 45 and preferably welded thereto by means of a laser.
  • the other, remote from the interior of the lamp vessel 40 end of the molybdenum foils 42, 43 is respectively connected to a led out of the sealed end 41 of the lamp vessel 40 power supply wire 46 and 47 made of molybdenum by the aforementioned end of the molybdenum foil 42 and 43 in a slot the power supply wire 46 and 47 is fixed.
  • FIG. 1 shows the power supply wire 35 of the lamp shown in FIG. 3, before mounting in the lamp vessel. It consists of molybdenum and has a thickness of 0.78 mm. At one end of the power supply wire 35 is a slot 350 which extends approximately 2 mm in the longitudinal direction of the power supply wire 35. The slot 350 was generated by means of a laser. The width of the slot 350 is slightly larger than the thickness of the molybdenum foil 32, whose end 321 is arranged in the slot 350 according to FIG. The thickness of the molybdenum foil is 27 microns.
  • the end 321 of the molybdenum foil 32 is slid into the slot 350 and then the slotted portion of the power supply wire 350 is pressed together to form fit between the end 321 of the molybdenum foil 32 and the power supply wire. Thereafter, the power supply wire 35 and the end 321 of the molybdenum foil are connected by one or more welding spots, which are generated for example by means of a laser.
  • the spot weld (s) may be made laterally along the slot 350 and the molybdenum foil 32 and power feed wire contact surface. But it is also possible to weld centrally through the power supply wire 35. Resistance welding is also possible.
  • the end of the molybdenum foil 42 opposite to the power supply 46 is connected to the gas discharge electrode 44 by inserting this end of the molybdenum foil 42 into a slot of the gas discharge electrode 44. Thereafter, the end of the molybdenum foil 42 disposed in the slot of the gas discharge electrode 44 is welded by one or more welding points as described above in the connection of the power supply lead 35 and molybdenum foil 32.
  • the prior compression of the slotted electrode section will be omitted because of the risk of breakage in the tungsten electrode 44.
  • the bonding technique between molybdenum foil and gas discharge electrodes is identical to the bonding technique between molybdenum foil and power supply wire.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP05017525A 2004-09-10 2005-08-11 Lampe électrique avec joint à feuille de molybdène Withdrawn EP1635378A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004044369A DE102004044369A1 (de) 2004-09-10 2004-09-10 Elektrische Lampe

Publications (2)

Publication Number Publication Date
EP1635378A2 true EP1635378A2 (fr) 2006-03-15
EP1635378A3 EP1635378A3 (fr) 2006-09-06

Family

ID=35500641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05017525A Withdrawn EP1635378A3 (fr) 2004-09-10 2005-08-11 Lampe électrique avec joint à feuille de molybdène

Country Status (4)

Country Link
US (1) US20060055328A1 (fr)
EP (1) EP1635378A3 (fr)
JP (1) JP2006080086A (fr)
DE (1) DE102004044369A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219438A (en) * 1938-10-31 1940-10-29 Gen Electric Seal
US3668456A (en) * 1970-08-28 1972-06-06 Sylvania Electric Prod Lamp having improved press seal
DE2317244A1 (de) * 1973-04-06 1974-10-17 Gte Sylvania Inc Stromzufuehrungen in presseinschmelzungen an glueh- und entladungslampen
DE2709345A1 (de) * 1976-03-05 1977-09-15 Gte Sylvania Inc Schweissverfahren fuer die herstellung von stromzufuehrungen, die in presseinschmelzungen von lampen eingebettet werden
JPH1116539A (ja) * 1997-06-24 1999-01-22 Seiko Epson Corp 光源ランプおよび光源ランプユニット
JP2001126662A (ja) * 1999-10-22 2001-05-11 Ushio Inc ショートアーク型超高圧放電灯

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219438A (en) * 1938-10-31 1940-10-29 Gen Electric Seal
US3668456A (en) * 1970-08-28 1972-06-06 Sylvania Electric Prod Lamp having improved press seal
DE2317244A1 (de) * 1973-04-06 1974-10-17 Gte Sylvania Inc Stromzufuehrungen in presseinschmelzungen an glueh- und entladungslampen
DE2709345A1 (de) * 1976-03-05 1977-09-15 Gte Sylvania Inc Schweissverfahren fuer die herstellung von stromzufuehrungen, die in presseinschmelzungen von lampen eingebettet werden
JPH1116539A (ja) * 1997-06-24 1999-01-22 Seiko Epson Corp 光源ランプおよび光源ランプユニット
JP2001126662A (ja) * 1999-10-22 2001-05-11 Ushio Inc ショートアーク型超高圧放電灯

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 1999, Nr. 04, 30. April 1999 (1999-04-30) -& JP 11 016539 A (SEIKO EPSON CORP), 22. Januar 1999 (1999-01-22) *
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 22, 9. März 2001 (2001-03-09) -& JP 2001 126662 A (USHIO INC), 11. Mai 2001 (2001-05-11) *

Also Published As

Publication number Publication date
DE102004044369A1 (de) 2006-03-16
JP2006080086A (ja) 2006-03-23
US20060055328A1 (en) 2006-03-16
EP1635378A3 (fr) 2006-09-06

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