EP0245734B1 - Lampe électrique - Google Patents

Lampe électrique Download PDF

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Publication number
EP0245734B1
EP0245734B1 EP87106402A EP87106402A EP0245734B1 EP 0245734 B1 EP0245734 B1 EP 0245734B1 EP 87106402 A EP87106402 A EP 87106402A EP 87106402 A EP87106402 A EP 87106402A EP 0245734 B1 EP0245734 B1 EP 0245734B1
Authority
EP
European Patent Office
Prior art keywords
mol
pbo
glass
molybdenum
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.)
Expired - Lifetime
Application number
EP87106402A
Other languages
German (de)
English (en)
Other versions
EP0245734A3 (en
EP0245734A2 (fr
Inventor
Werner Dr. Weiss
Ewald Pösl
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
Priority to AT87106402T priority Critical patent/ATE74465T1/de
Publication of EP0245734A2 publication Critical patent/EP0245734A2/fr
Publication of EP0245734A3 publication Critical patent/EP0245734A3/de
Application granted granted Critical
Publication of EP0245734B1 publication Critical patent/EP0245734B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/38—Seals for leading-in conductors

Definitions

  • the invention relates to an electric lamp according to the preamble of claim 1.
  • a vacuum-tight electrical supply line is usually achieved by means of the film melting technique.
  • thermally highly stressed lamp types temperatures of more than 350 ° C occur in the area of the film melting.
  • the foils would be exposed to increased corrosion at these temperatures, which is why these cavities are sealed by a low-melting solder glass.
  • lead borate glasses to which ZnO and SiO2 are often added (eg US Pat. No. 2,889,952).
  • solder glasses based on antimony borate glass have been developed (for example US Pat. No. 3,588,315) which have no corrosive effect on molybdenum wire.
  • a use of these solder glasses is now however, no longer desirable due to the associated great health risk.
  • the object of the invention is to provide a solder glass which does not have a corrosive effect on molybdenum wire, has satisfactory flow properties in the temperature range from 350 ° C. to 500 ° C. and does not lead to any serious health risks associated with the processing of antimony.
  • solder glass contains lead borate and bismuth oxide in the following composition: 3-10 mol% Bi2O3, 25-40 mol% B2O3, the rest consisting essentially of PbO and possibly other additives.
  • BaO with a proportion of up to 15 mol% is possible as an additive.
  • a bismuth-lead borate solder glass with the composition 4-6 mol% Bi2O3, 33-37 mol% B2O3, the rest PbO is particularly advantageous.
  • the bismuth lead borate solder glasses according to the invention combine the advantages of the lead borate glasses (eg low melting and softening temperature, good wetting ability in the quartz glass-molybdenum system) with those of the antimony borate glasses (no corrosive effect on molybdenum).
  • the bismuth lead borate solder glasses are particularly difficult to reduce than the known lead borate glasses and therefore allow the use of the usual molybdenum wires.
  • the composition according to the invention in particular ensures good flow properties which enable the solder glass to penetrate into the capillary cavities.
  • the viscosity can be regulated by adding BaO.
  • the low tendency to crystallize should also be emphasized.
  • the figure shows a halogen lamp 1, pinched on one side, with high power (250 W).
  • the piston 2 is made of quartz glass; however, it would also be possible to use doped quartz glass or quartz-like glass (Vycor) with a high content (> 96%) of silica (SiO2).
  • the filling 3 contains inert gases (eg Kr or Xe) and halogen-containing additives (eg hydrogen halides, halogenated hydrocarbons).
  • a filament 4 made of tungsten is held in the bulb 2 by a pair of internal power leads 5 made of molybdenum.
  • the inner power supply lines 5 are each attached to the ends of thin, rectangular molybdenum foils 6, which are melted into the pinch seal 7.
  • the pinch seal 7 is heated to approximately 800 ° C., generally during lamp manufacture.
  • the point at which the external power leads 8 emerge from the pinch seal 7 is now dabbed with the solder glass drawn into a thin rod. Due to the high temperature, the solder glass melts and penetrates into the capillary cavities 9, as a result of which the foils 6 are sealed off from the outside.
  • a first embodiment of the solder glass (I) according to the invention can be melted from lead oxide, boron oxide and bismuth oxide in a hard porcelain crucible at temperatures of approximately 900 ° C. in a Simon-Müller furnace.
  • composition of the solder glass I is (in mol%) 35% B2O3, 5% Bi2O3, 60% PbO.
  • solder glass II has the composition 30% B2O3, 8% Bi2O3, 10% BaO, 52% PbO.
  • the composition of the solder glass III is similar: 35% B2O3, 5% Bi2O3, 10% BaO, 50% PbO. (The data are in mol%).
  • the solder glasses I - III show small differences in the crystallization behavior and in the temperature dependence of the viscosity. Their melting temperatures (corresponding to a viscosity of 102 dPas) are approx. 575 ° C, their softening temperatures (corresponding to a viscosity of 107 dPas) approx. 430 ° C.
  • the coefficient of thermal expansion is about 10 x 10 ⁇ 6 K ⁇ 1 (0-300 ° C), the transformation temperature about 320 ° C, the density about 6.29 g / cm3.
  • the field of application of the individual solder glass depends on the parameters of the respective lamp type.
  • the invention is not restricted to use with incandescent halogen lamps.
  • incandescent halogen lamps in which the technology of film melting is also used, temperatures can occur in the area of the pinch seal which make it necessary to use the solder glasses according to the invention.

Landscapes

  • Glass Compositions (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (3)

  1. Lampe électrique comportant une ampoule (2) formée d'un verre résistant à l'acide silicique et qui contient un corps lumineux (4) ou des électrodes ainsi qu'un remplissage contenant un additif incluant un halogène et dans lequel sont insérés, d'une manière étanche au vide, par l'intermédiaire d'au moins une zone de pincement étanche (7), des conducteurs électriques d'alimentation qui sont constitués par un couple d'éléments intérieur et extérieur d'alimentation en courant, reliés entre eux seulement par fusion d'une feuille, la zone de pincement étanche (7) comportant, dans l'environnement des éléments extérieurs d'alimentation en courant (8), des espaces capillaires (9), qui sont remplis par un verre de soudure à bas point de fusion (10) formé de borate de verre, caractérisée par le fait que ce verre de soudure (10) contient en outre de l'oxyde de bismuth et possède la composition suivante (en % en moles) :
    3-10 % Bi₂O₃
    25-40 % B₂O₃
    le reste PbO et éventuellement d'autres additifs.
  2. Lampe électrique suivant la revendication 1, caractérisée par le fait que le verre de soudure (10) possède la composition suivante (en % en moles) :
    4 - 6 % Bi₂O₃
    33 - 37 % B₂O₃
    le reste PbO.
  3. Lampe électrique suivant la revendication 1, caractérisée par le fait que le verre de soudure (10) contient, en tant qu'additif supplémentaire, jusqu'à 15 % en moles d'oxyde de baryum (BaO).
EP87106402A 1986-05-12 1987-05-04 Lampe électrique Expired - Lifetime EP0245734B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106402T ATE74465T1 (de) 1986-05-12 1987-05-04 Elektrische lampe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3615944 1986-05-12
DE19863615944 DE3615944A1 (de) 1986-05-12 1986-05-12 Elektrische lampe

Publications (3)

Publication Number Publication Date
EP0245734A2 EP0245734A2 (fr) 1987-11-19
EP0245734A3 EP0245734A3 (en) 1989-11-02
EP0245734B1 true EP0245734B1 (fr) 1992-04-01

Family

ID=6300647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106402A Expired - Lifetime EP0245734B1 (fr) 1986-05-12 1987-05-04 Lampe électrique

Country Status (6)

Country Link
US (1) US4766346A (fr)
EP (1) EP0245734B1 (fr)
JP (1) JPH0719582B2 (fr)
AT (1) ATE74465T1 (fr)
CA (1) CA1270038A (fr)
DE (2) DE3615944A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918353A (en) * 1987-09-29 1990-04-17 General Electric Company Reflector and lamp combination
JPH01251550A (ja) * 1988-03-31 1989-10-06 Ushio Inc 箔シール電球
DE4028847A1 (de) * 1990-09-11 1992-03-12 Consulco Ltd Niederspannungs-leuchtmittel
JPH0654657B2 (ja) * 1990-12-25 1994-07-20 ウシオ電機株式会社 箔シールランプおよびその製造方法
US5359262A (en) * 1992-08-31 1994-10-25 Welch Allyn, Inc. Sub-miniature tungsten halogen lamp with major inert gas and minor halide gas constitutes
US5629247A (en) * 1996-05-08 1997-05-13 The O'hommel Company High bismuth oxide based flux and paint compositions for glass substrates
US6376400B1 (en) * 1999-02-25 2002-04-23 Asahi Glass Company, Limited Low melting point glass for covering electrodes, and glass ceramic composition for covering electrodes
JP3415533B2 (ja) * 2000-01-12 2003-06-09 エヌイーシーマイクロ波管株式会社 高圧放電灯
GB2374419B (en) * 2001-03-09 2004-12-29 Zellweger Analytics Ltd Electrochemical gas sensor
US8277274B2 (en) * 2002-11-07 2012-10-02 Advanced Lighting Technologies, Inc. Apparatus and methods for use of refractory abhesives in protection of metallic foils and leads
EP1563524B1 (fr) * 2002-11-07 2011-04-20 Advanced Lighting Technologies, Inc. Procédé de préparation des feuilles métalliques protégées de l'oxydation
US7156815B2 (en) * 2003-03-19 2007-01-02 Biomedical Resources, Inc. Soft tissue biopsy instrument
JP4055633B2 (ja) 2003-04-14 2008-03-05 ウシオ電機株式会社 箔シールランプ
JP5200448B2 (ja) * 2007-08-08 2013-06-05 ウシオ電機株式会社 放電ランプ
JP4539705B2 (ja) * 2007-10-22 2010-09-08 ウシオ電機株式会社 箔シールランプ及び箔シールランプの製造方法
US20180049466A1 (en) * 2013-03-15 2018-02-22 Healthier Choices Management Corp Electronic cigarette
US11064732B2 (en) * 2013-03-15 2021-07-20 Healthier Choices Management Corp. Electronic vaporizer cartridge with encased heat source
US20180035721A1 (en) * 2013-03-15 2018-02-08 Healthier Choices Management Corp Electronic cigarette
US20190274355A1 (en) * 2018-03-09 2019-09-12 Healthier Choices Management Corp Electronic cigarette

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889952A (en) * 1956-02-01 1959-06-09 Corning Glass Works Composite article and method
FR1317782A (fr) * 1961-03-16 1963-05-08
US3259777A (en) * 1961-05-09 1966-07-05 Gen Electric Metal halide vapor discharge lamp with near molten tip electrodes
DE1925436B2 (de) * 1968-12-23 1971-01-21 Nippon Electric Glass Company, Ltd , Tokio Bei 425 bis 430 Grad C schmelzendes und kristallisierendes Lotglas zur Verbin dung von Stirnteilen mit Tnchterteilen von Farbfernsehrohrenkolben
US3588315A (en) * 1970-01-15 1971-06-28 Gen Electric Quartz-to-metal seal
DE2060748C3 (de) * 1970-12-10 1973-10-18 Jenaer Glaswerk Schott & Gen, 6500 Mainz Phototropes Glas oder phototropes glasig-kristallines Material, das frei ist von Halogenen, Seltenen Erden, Wolfram und Molybdän
NL7908413A (nl) * 1979-11-19 1981-06-16 Philips Nv Electrische lamp.
US4302250A (en) * 1980-09-08 1981-11-24 Corning Glasss Works Glass envelopes for tungsten-halogen lamps
US4522925A (en) * 1983-09-01 1985-06-11 Owens-Illinois, Inc. Sealing glass and method of making a Willemite filler therefor
US4493944A (en) * 1984-01-04 1985-01-15 Gte Products Corporation Solder glass and electrical device employing same
US4492814A (en) * 1984-01-04 1985-01-08 Gte Products Corporation Solder glass and electrical device employing same

Also Published As

Publication number Publication date
DE3777873D1 (de) 1992-05-07
JPH0719582B2 (ja) 1995-03-06
JPS62272454A (ja) 1987-11-26
US4766346A (en) 1988-08-23
EP0245734A3 (en) 1989-11-02
CA1270038A (fr) 1990-06-05
EP0245734A2 (fr) 1987-11-19
ATE74465T1 (de) 1992-04-15
DE3615944A1 (de) 1987-11-19

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