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EP0401403A1 - Flash lamp - Google Patents

Flash lamp Download PDF

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Publication number
EP0401403A1
EP0401403A1 EP89110243A EP89110243A EP0401403A1 EP 0401403 A1 EP0401403 A1 EP 0401403A1 EP 89110243 A EP89110243 A EP 89110243A EP 89110243 A EP89110243 A EP 89110243A EP 0401403 A1 EP0401403 A1 EP 0401403A1
Authority
EP
European Patent Office
Prior art keywords
glass
glass tube
electrodes
flash lamp
face
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.)
Granted
Application number
EP89110243A
Other languages
German (de)
French (fr)
Other versions
EP0401403B1 (en
Inventor
Eugen Achter
Ingo Dipl.-Phys. Dünisch
Josef Phys.-Ing. Zimlich
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.)
Heimann Optoelectronics GmbH
Original Assignee
Heimann GmbH
Heimann Optoelectronics GmbH
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 Heimann GmbH, Heimann Optoelectronics GmbH filed Critical Heimann GmbH
Priority to DE58907618T priority Critical patent/DE58907618D1/en
Priority to EP89110243A priority patent/EP0401403B1/en
Priority to JP1990058403U priority patent/JPH034649U/ja
Publication of EP0401403A1 publication Critical patent/EP0401403A1/en
Priority to US07/729,990 priority patent/US5091674A/en
Application granted granted Critical
Publication of EP0401403B1 publication Critical patent/EP0401403B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors

Definitions

  • the invention relates to a flash lamp with a gas-filled glass tube into which two electrodes protrude from the end faces.
  • the invention has for its object to design a flash lamp of the type mentioned so that an exact centering of the electrodes takes place with only a small manufacturing tolerance.
  • the electrodes are each melted into a hollow cylindrical glass body inserted in the interior of the glass tube, the outer end face of each glass body being approximately flush with the corresponding end face of the glass tube and together with this end face from a layer of glass solder is covered.
  • the electrodes are centered by the glass body lying inside the glass tube and fitting into it. A gas-tight closure of the flash lamp is ensured by layers of glass solder provided on the end faces, each of which is the end face of the
  • the drawing shows a flash lamp with a gas-filled glass tube 1, into which two electrodes protrude from the end faces.
  • a gas-filled glass tube 1 into which two electrodes protrude from the end faces.
  • only one end of the glass tube 1 is shown with the corresponding electrode 2.
  • the other end is designed accordingly.
  • the electrode 2 is melted into a hollow cylindrical glass body 3, which is inserted appropriately in the interior of the glass tube 1.
  • the outer end face 4 of the glass body 3 lies approximately flush with the end face 5 of the glass tube 1.
  • Both end faces 4, 5 are covered by a layer 6 of glass solder, as a result of which the interior of the glass tube 1 is sealed.
  • the electrode 2 passes through the glass body 3 and the layer 6 and protrudes outwards, so that an electrical connection is possible.
  • the glass body 3 enables an exact centering of the pin-like electrode 2, whereby an uneven blackening of the glass tube 1 on its inside is prevented by electrode erosion.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

In a flashlamp with a gas-filled glass tube (1) with electrodes (2) inserted from the end sides (5), it is intended to achieve precise centring of the electrodes (2). <??>Each electrode (2) is fused into in each case one hollow-cylindrical glass body (3), located inside the glass tube (1). The outer end side (4) of the glass body (3) is located in an approximately flush manner with the corresponding end side (5) of the glass tube (1) and, together with this end side (5), is coated with a layer (6) of glass solder. <IMAGE>

Description

Die Erfindung betrifft eine Blitzlampe mit einem gasgefüllten Glasrohr, in das von den Stirnseiten aus zwei Elektroden ragen.The invention relates to a flash lamp with a gas-filled glass tube into which two electrodes protrude from the end faces.

Es ist bekannt, eine Blitzlampe dieser Art an ihren beiden Enden in der Weise aufzubauen, daß die jeweilige, stiftförmige Elektrode in einen Glaskörper eingeschmolzen wird, welcher auf der Stirnseite des Glasrohres unter Zwischenschaltung einer Schicht aus Glaslot aufliegt. Die Zusammensetzung des Glaslotes ist dabei dem Hartglas des Glasrohres in seiner Wärmeausdehnung angepaßt, so daß keine Wärmespannungen entstehen. Die Zentrie­rung der Elektroden in dem Glasrohr ist dabei jedoch unbefrie­digend. Eine exakte Zentrierung ist aber wünschenswert, damit keine ungleichmäßige Anschwärzung der Innenseite des Glasrohres durch Elektrodenabbrand erfolgt.It is known to build up a flash lamp of this type at its two ends in such a way that the respective pin-shaped electrode is melted into a glass body which rests on the end face of the glass tube with the interposition of a layer of glass solder. The composition of the glass solder is adapted to the tempered glass of the glass tube in its thermal expansion, so that no thermal stresses arise. The centering of the electrodes in the glass tube is unsatisfactory. Exact centering is desirable, however, so that there is no uneven blackening of the inside of the glass tube due to electrode erosion.

Der Erfindung liegt die Aufgabe zugrunde, eine Blitzlampe der eingangs genannten Art so auszubilden, daß eine exakte Zentrie­rung der Elektroden mit einer nur geringen Fertigungstoleranz erfolgt.The invention has for its object to design a flash lamp of the type mentioned so that an exact centering of the electrodes takes place with only a small manufacturing tolerance.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß die Elek­troden in je einem hohlzylindrischen, im Inneren des Glasrohres passend eingesetzten Glaskörper eingeschmolzen sind, wobei die äußere Stirnseite jedes Glaskörpers etwa bündig mit der ent­sprechenden Stirnseite des Glasrohres ist und zusammen mit dieser Stirnseite von einer Schicht aus Glaslot überzogen ist. Bei der erfindungsgemäßen Blitzlampe erfolgt die Zentrierung der Elektroden durch den im Inneren des Glasrohres liegenden, in dieses passenden Glaskörper. Ein gasdichter Abschluß der Blitzlampe ist durch an den Stirnseiten vorgesehene Schichten aus Glaslot gewährleistet, die jeweils die Stirnseite desThis object is achieved in that the electrodes are each melted into a hollow cylindrical glass body inserted in the interior of the glass tube, the outer end face of each glass body being approximately flush with the corresponding end face of the glass tube and together with this end face from a layer of glass solder is covered. In the flash lamp according to the invention, the electrodes are centered by the glass body lying inside the glass tube and fitting into it. A gas-tight closure of the flash lamp is ensured by layers of glass solder provided on the end faces, each of which is the end face of the

Glasrohres und des die Elektrode tragenden Glaskörpers über­ziehen.Cover the glass tube and the glass body supporting the electrode.

Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained below with reference to an embodiment shown in the drawing.

In der Zeichnung ist eine Blitzlampe mit einem gasgefüllten Glasrohr 1 dargestellt, in das von den Stirnseiten aus zwei Elektroden ragen. In der Zeichnung ist nur das eine Ende des Glasrohres 1 mit der entsprechenden Elektrode 2 dargestellt. Das andere Ende ist entsprechend ausgebildet.The drawing shows a flash lamp with a gas-filled glass tube 1, into which two electrodes protrude from the end faces. In the drawing, only one end of the glass tube 1 is shown with the corresponding electrode 2. The other end is designed accordingly.

Die Elektrode 2 ist in einem hohlzylindrischen Glaskörper 3 eingeschmolzen, welcher im Inneren des Glasrohres 1 passend eingesetzt ist. Die äußere Stirnseite 4 des Glaskörpers 3 liegt etwa bündig mit der Stirnseite 5 des Glasrohres 1. Beide Stirn­seiten 4, 5 sind von einer Schicht 6 aus Glaslot überzogen, wodurch der Innenraum des Glasrohres 1 abgedichtet ist. Die Elektrode 2 durchsetzt den Glaskörper 3 und die Schicht 6 und ragt nach außen, so daß ein elektrischer Anschluß möglich ist.The electrode 2 is melted into a hollow cylindrical glass body 3, which is inserted appropriately in the interior of the glass tube 1. The outer end face 4 of the glass body 3 lies approximately flush with the end face 5 of the glass tube 1. Both end faces 4, 5 are covered by a layer 6 of glass solder, as a result of which the interior of the glass tube 1 is sealed. The electrode 2 passes through the glass body 3 and the layer 6 and protrudes outwards, so that an electrical connection is possible.

Der Glaskörper 3 ermöglicht eine exakte Zentrierung der stift­artigen Elektrode 2, wodurch eine ungleichmäßige Anschwärzung des Glasrohres 1 auf seiner Innenseite durch Elektrodenabbrand verhindert ist.The glass body 3 enables an exact centering of the pin-like electrode 2, whereby an uneven blackening of the glass tube 1 on its inside is prevented by electrode erosion.

Claims (1)

Blitzlampe mit einem gasgefüllten Glasrohr (1), in das von den Stirnseiten (5) aus zwei Elektroden (2) ragen, welche in je einem hohlzylindrischen, im Inneren des Glasrohres (1) passend eingesetzten Glaskörper (3) eingeschmolzen sind, wobei die äußere Stirnseite (4) jedes Glaskörpers (3) etwa bündig mit der entsprechenden Stirnseite (5) des Glasrohres (1) ist und zu­sammen mit dieser Stirnseite (5) von einer Schicht (6) aus Glaslot überzogen ist.Flash lamp with a gas-filled glass tube (1) into which two electrodes (2) protrude from the end faces (5), each of which is fused into a hollow cylindrical glass body (3) inserted inside the glass tube (1), the outer one The end face (4) of each glass body (3) is approximately flush with the corresponding end face (5) of the glass tube (1) and together with this end face (5) is covered by a layer (6) of glass solder.
EP89110243A 1989-06-06 1989-06-06 Flash lamp Expired - Lifetime EP0401403B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE58907618T DE58907618D1 (en) 1989-06-06 1989-06-06 Flash lamp.
EP89110243A EP0401403B1 (en) 1989-06-06 1989-06-06 Flash lamp
JP1990058403U JPH034649U (en) 1989-06-06 1990-06-01
US07/729,990 US5091674A (en) 1989-06-06 1991-07-15 Gas discharge lamp with glass tube and seal members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89110243A EP0401403B1 (en) 1989-06-06 1989-06-06 Flash lamp

Publications (2)

Publication Number Publication Date
EP0401403A1 true EP0401403A1 (en) 1990-12-12
EP0401403B1 EP0401403B1 (en) 1994-05-04

Family

ID=8201469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110243A Expired - Lifetime EP0401403B1 (en) 1989-06-06 1989-06-06 Flash lamp

Country Status (4)

Country Link
US (1) US5091674A (en)
EP (1) EP0401403B1 (en)
JP (1) JPH034649U (en)
DE (1) DE58907618D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117762A1 (en) * 1990-06-01 1991-12-05 Matsushita Electric Ind Co Ltd THERMAL PROTECTIVE DEVICE

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6661168B1 (en) 2000-05-05 2003-12-09 Illumination Technology, Inc. Low voltage incandescent lamp with dual envelope
DE102005022376B4 (en) * 2005-05-13 2009-11-19 Perkinelmer Optoelectronics Gmbh & Co.Kg Lamp and method of making the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2001425A1 (en) * 1969-01-16 1970-07-23 Thorn Lighting Ltd Methods and compositions for sealing ceramic lamp envelopes
US3986236A (en) * 1974-02-25 1976-10-19 Gte Sylvania Incorporated Method of sealing alumina arc tube
FR2387512A1 (en) * 1977-04-15 1978-11-10 Philips Nv HIGH PRESSURE METAL STEAM DISCHARGE LAMP
DE3227280A1 (en) * 1982-07-21 1984-01-26 Heimann Gmbh, 6200 Wiesbaden GAS DISCHARGE LAMP, IN PARTICULAR FLASH TUBES
EP0136564A2 (en) * 1983-09-02 1985-04-10 GTE Products Corporation End seal for ceramic arc discharge tubes
EP0204303A2 (en) * 1985-06-03 1986-12-10 GTE Products Corporation High temperature tapered inlead for ceramic discharge lamps

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886392A (en) * 1974-02-25 1975-05-27 Gte Sylvania Inc Method of sealing alumina arc tube
US4147952A (en) * 1974-12-12 1979-04-03 Gte Sylvania Incorporated Method of sealing alumina arc tube
DE2734099C3 (en) * 1977-07-28 1980-08-28 Heimann Gmbh, 6200 Wiesbaden Gas discharge lamp
US4803403A (en) * 1983-09-02 1989-02-07 Gte Products Corporation End seal for ceramic arc discharge tubes
JPS6063871A (en) * 1983-09-19 1985-04-12 Toshiba Corp Metal halide lamp
NL8303858A (en) * 1983-11-10 1985-06-03 Philips Nv HIGH PRESSURE GAS DISCHARGE LAMP.
US4691141A (en) * 1985-10-11 1987-09-01 Gte Laboratories Incorporated Dosing composition for high pressure sodium lamps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2001425A1 (en) * 1969-01-16 1970-07-23 Thorn Lighting Ltd Methods and compositions for sealing ceramic lamp envelopes
US3986236A (en) * 1974-02-25 1976-10-19 Gte Sylvania Incorporated Method of sealing alumina arc tube
FR2387512A1 (en) * 1977-04-15 1978-11-10 Philips Nv HIGH PRESSURE METAL STEAM DISCHARGE LAMP
DE3227280A1 (en) * 1982-07-21 1984-01-26 Heimann Gmbh, 6200 Wiesbaden GAS DISCHARGE LAMP, IN PARTICULAR FLASH TUBES
EP0136564A2 (en) * 1983-09-02 1985-04-10 GTE Products Corporation End seal for ceramic arc discharge tubes
EP0204303A2 (en) * 1985-06-03 1986-12-10 GTE Products Corporation High temperature tapered inlead for ceramic discharge lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117762A1 (en) * 1990-06-01 1991-12-05 Matsushita Electric Ind Co Ltd THERMAL PROTECTIVE DEVICE
US5155463A (en) * 1990-06-01 1992-10-13 Matsushita Electric Industrial Co., Ltd. Thermal protector

Also Published As

Publication number Publication date
EP0401403B1 (en) 1994-05-04
JPH034649U (en) 1991-01-17
US5091674A (en) 1992-02-25
DE58907618D1 (en) 1994-06-09

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