EP1665318A2 - Lampe electrique scellee des deux cotes et procede de fabrication - Google Patents

Lampe electrique scellee des deux cotes et procede de fabrication

Info

Publication number
EP1665318A2
EP1665318A2 EP04786757A EP04786757A EP1665318A2 EP 1665318 A2 EP1665318 A2 EP 1665318A2 EP 04786757 A EP04786757 A EP 04786757A EP 04786757 A EP04786757 A EP 04786757A EP 1665318 A2 EP1665318 A2 EP 1665318A2
Authority
EP
European Patent Office
Prior art keywords
contact element
sleeve
power supply
diameter
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Withdrawn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
EP04786757A
Other languages
German (de)
English (en)
Inventor
Jens Benedix
Rainer Braun
Jörg THÄLE
Hartmut Wilke
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 EP1665318A2 publication Critical patent/EP1665318A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/52—Means forming part of the tube or lamps for the purpose of providing electrical connection to it directly applied to or forming part of the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/36—Solid anodes; Solid auxiliary anodes for maintaining a discharge
    • H01J1/44—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors
    • H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device
    • H01J9/326—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device making pinched-stem or analogous seals

Definitions

  • the invention relates to a double-ended electric lamp and a method for its production according to the preamble of claim 1.
  • These are both metal halide lamps and incandescent lamps such as halogen incandescent lamps.
  • EP 780 883 already discloses an electric lamp which is closed on two sides and a method for its production, two base parts having contact elements which are seated in tubular extensions at the end of bruises which effect the seal.
  • the contact elements extend transversely to the lamp axis and are surrounded by the tubular extensions as sleeves. They are completely or partially attached along the circumference of the contact elements.
  • the disadvantage of this is that the contact elements easily tilt, so that they are no longer exactly transverse to the lamp axis and, moreover, the risk of breakage is relatively high.
  • Another disadvantage is the complicated production that requires new machines.
  • the advantage of the present invention is that the ceramic sleeve material can be completely saved and therefore also no cement is required. The time-consuming baking out of the base cement is completely eliminated.
  • the glass base sleeve can be shaped at the same time as the squeezing step. However, it is more suitable to use a separate pipe part for the production. Overall, this results in considerable material cost savings compared to ceramic bases (in the order of 50%), without the basic manufacturing process having to be changed significantly. The same machines can therefore be used as for ceramic bases, but after appropriate adjustment. This is a significant advantage over the concept of EP 780 883.
  • the electric lamp which is closed on both sides, consists of a longitudinally elongated lamp bulb which is sealed in a vacuum-tight manner and defines a longitudinal axis. It is equipped at its two opposite ends with sealing parts, in particular melts or pinch seals, with each pinch seal enclosing a pinch film, for example, which connects the inner and outer power supply lines to one another. Lamp bases are attached to the outer ends of the sealing parts. These each consist of a sleeve which is formed from the material of the lamp bulb or preferably from a separate part and which is attached to the outer end of the seal (melting or pinch seal).
  • This sleeve has an inner and an outer diameter, the wall thickness of the sleeve depending on the type being of the order of about one millimeter.
  • a contact element with play which is electrically conductively connected to the external power supply.
  • the contact element extends essentially transversely to the lamp axis.
  • the basic shape of the contact element is a circular disk or another disk-like shape, in particular a plate. However, slight deviations from the circular shape are not excluded.
  • the sleeve does not have to be exactly cylindrical either. Both parts of the base, sleeve and contact element, are preferably on top of one another. the coordinated in cross-section and advantageously circular cylindrical.
  • the (largest) diameter of the contact element is loosely adapted to the inside diameter of the sleeve, and is preferably about 85 to 95% of the inside diameter of the sleeve.
  • the contact element itself is expressly dispensed with in the sleeve, as a result of which the production speed is increased. This is now possible because the length L of the sleeve is kept very short. It is in particular L ⁇ 15 mm, preferably L ⁇ 10 mm. For example, L can be 3 to 8 m.
  • the contact element is secured against tilting by section-wise forming the glass sleeve of the base on a neck part or the power supply at a point immediately behind the contact element.
  • a power supply with a diameter of at least 0.4 mm, preferably at least 0.5 mm, is recommended. Values between 0.5 and 0.7 mm are typical. This covers a requirement profile with the following points: the power supply avoids kinking, withstands high currents and survives the crushing process undamaged.
  • the distance of the edge of the disk-like body from its center, ie its radius, changes over the circumference.
  • the particular advantage of a free contact element is that consideration of the compatibility between the glass material of the sleeve and the metallic material of the contact element is no longer important, since due to the lack of contact between them, the coefficient of thermal expansion no longer requires the material of the contact element would be adjusted to the thermal expansion coefficient of the piston material (generally quartz glass).
  • the glass material of the sleeve is in particular similar to the piston material, but the requirements for purity and optical quality can be chosen lower.
  • a suitable material for the contact material is, for example, stainless steel (V2A, in particular also nickel-plated) or, above all, nickel, possibly coated, for example silver-plated or gold-plated, or copper (in particular nickel-plated).
  • the outer power supply is an axially arranged wire.
  • the contact element is an eyelet-like extension (neck part) into which the wire can be inserted.
  • a second variant is to bend the wire-shaped outer power supply and to weld the long side of the angle piece to the contact element. Finally, the contact element can also be butt-welded directly to the axial wire of the power supply.
  • the contact element is bulged toward the power supply.
  • the angle piece can be welded well to this concave curvature.
  • the edge of the contact element has a thickness between 1.2 and 1.6 mm, for example 1.4 mm. In a particularly preferred embodiment, this dimensioning rule applies to the entire contact element.
  • the production of such bases from glass sleeves integrated on the seal can in principle be integrated into the usual production process for lamps of the type described, for example (with the aid of a four-jaw squeezing machine) in EP-A 451 647.
  • the jaws now each contain an integrated molding device which not only forms the pinch, but also the glass sleeve.
  • the end of the lamp bulb in particular also the area of the later glass sleeve, is brought to the deformation temperature.
  • the surface tension results in a defined self-deformation of the piston end, so that the pipe diameter constricts there. Due to the shaped jaws adapted to the intended base shape, the piston is now closed by the pinch jaws.
  • the base geometry is embossed, whereby the contact element is held in the right place using negative pressure or a pair of pliers.
  • a defined inner diameter of the glass sleeve is achieved by suitably chosen processing parameters. Due to the short sleeve length for improvement For the sake of stability, no special centering parts, as described in EP 780 883, are required.
  • eyelet-like attachment part and contact element are made from one piece, mostly stainless steel, tungsten or molybdenum being used as the material.
  • an attachment part is usually not necessary due to the short overall length.
  • the above concept is suitable for many types of lamps, in particular for discharge lamps or incandescent lamps. It is particularly preferred for lamps without an outer bulb. If an outer bulb is used, it can completely or partially surround the discharge vessel. The lamp shafts can be crushed or melted down.
  • the contact element is usually shaped like a disk, usually as a circular disk or oval. ⁇
  • the contact elements are advantageously accommodated in the interior of the sleeve and at least 0.5 mm, in particular 1 mm, from the outer end of the sleeve.
  • the production takes place inexpensively as follows.
  • a conventional lamp for example a halogen lamp pinched on two sides, is manufactured, the bulb of which is made of quartz glass, the external power leads protruding from the pinch.
  • the contact element is attached to the outer power supply.
  • a circular cylindrical quartz glass tube is provided with a length between 3 and 15 mm, typically 5 to 10 mm, which is desired for the dimension of the sleeve. This tube is placed over the contact element and attached to the end of the pinch. The pipe is held centrally and the end of it is brought to the pinch by means of propulsion.
  • connection area between the pipe end and the pinch is heated so that the mutually facing ends of the pipe and the pinch can be connected to one another and advantageously formed in the process.
  • the advance of the pipe end is set by a stop in its position relative to the calotte in the base.
  • laser radiation is particularly suitable, preferably defocused, plasma or flame.
  • the dimensions of the tube in the area of the contact element are retained as far as possible. This makes it possible to use suitably selected pipes with exact dimensions and diameter-adjusted contact elements with a low tolerance.
  • the sleeve can be deformed by a defocused laser and a crimping or shaping jaw cooperating in such a way that the diameter of the sleeve in the region between the contact element and the end of the crimping is further reduced, in particular to an inner diameter of the tube that is smaller than is the outer diameter of the calotte.
  • the sleeve preferably bears on the external power supply, possibly also on a neck part for the contact element. This stabilizes the contact element against tilting. This property is particularly important when inserting the lamp into the socket.
  • a typical application is for metal halide lamps and incandescent halogen lamps.
  • FIG. 1 shows a halogen incandescent lamp in side view (a) and rotated by 90 ° (b);
  • Figure 2 shows a halogen incandescent lamp in side view (a) and rotated by 90 ° (b); 3 shows a halogen incandescent lamp in a side view (FIG. 3a) and rotated by 90 ° (FIG. 3b) and a contact element in two exemplary embodiments (FIGS. 3c and 3e) and a further exemplary embodiment of a halogen incandescent lamp in a side view (FIG. 3d);
  • Figure 4 shows an embodiment of a metal halide lamp in side view;
  • Figure 5 shows another embodiment of a base in side view;
  • Figure 6 shows another embodiment of a contact element in section.
  • FIG. 1 shows the side view of a halogen incandescent lamp pinched on both sides, in each case rotated by 90 ° (FIGS. 1a and 1b). It consists of a cylindrical bulb 1, in which a luminous element 2 is arranged axially. It is held in the piston 1 by knobs 10.
  • the luminous element 2 consists of luminous sections 3 with a small slope, which are separated from one another by non-luminous sections 4 with a large slope.
  • the ends 5 of the filament also consist of non-illuminating sections with a large slope.
  • the ends 5 are embedded directly in the pinch 6 in their function as an internal power supply and are connected there with a pinch film 7.
  • the end 8 of the film 7 facing the filament is bent inside the pinch 6, the filament end 5 being inserted into the bend 9 and thus making electrical contact with the film 7 purely mechanically.
  • a tubular glass sleeve 11 with an outer diameter of 7.0 mm and an inner diameter of 5 mm is integrally formed on the outside of the pinch 6 as a base.
  • the sleeve 11 is about 7 mm long. It is thus narrower than the broad side of the pinch 6, but wider than the narrow side of the pinch 6. Accordingly, there is a transition zone 12 between the pinch 6 and the sleeve 11.
  • a disk-like contact element 13 which is made of nickel with a thickness of 1.4 mm, is embedded in the sleeve 11 transversely to the lamp axis at a depth of 3 mm from the sleeve end. It is designed as a circular disk, the radius of the disk 13 being approximately 90% of the radius of the inner diameter of the sleeve 11.
  • FIG. 2 shows two views rotated by 90 ° (FIGS. 2a and 2b) of a halogen incandescent lamp pinched on both sides. It consists of a cylindrical bulb 1, in which a luminous element 2 is arranged axially. It is held in the piston 1 by knobs 10.
  • the piston is made of high-purity quartz glass.
  • the luminous element 2 consists of luminous sections 3 which are separated from one another by non-luminous sections 4.
  • the ends 5 of the filament also consist of non-illuminating sections with a large slope.
  • the ends 5 are embedded directly in the pinch 6 in their function as an internal power supply and are connected there with a pinch film 7.
  • the end 8 of the film 7 facing the filament is bent inside the pinch 6, the filament end 5 being inserted into the bend 9 and thus making electrical contact with the film 7 purely mechanically.
  • the film is 2.5 ⁇ m thick.
  • a separate tubular sleeve 11 made of inferior quality quartz glass with an outer diameter of 7.45 mm and an inner diameter of 5 mm is molded onto the outside of the pinch 6 as a base.
  • the sleeve 11 is about 8 mm long. It is narrower than the broad side of the pinch 6, but wider than the narrow side of the pinch 6. Accordingly, there is a punctual transition zone between the pinch 6 and the sleeve 11. Surprisingly, it has been found that a local transition zone at the two contact points 12a and 12b already guarantees a secure hold towards the pinch.
  • a disk-like contact element 13 which is made of nickel-plated copper with a thickness of 1.1 mm, is embedded in the sleeve 11 transversely to the lamp axis at a distance of 1 mm (minimum value is 0.5 mm) from the sleeve end. It has a circular design and is often referred to below as a calotte.
  • FIG. 3 shows two views rotated by 90 ° (FIGS. 3a and 3b) of a further exemplary embodiment of a halogen incandescent lamp squeezed on both sides.
  • the same technical features have the same reference numbers as in FIG. 2.
  • a separate tubular sleeve 11 made of quartz glass with an outer diameter of 7.45 mm and an inner diameter of 5 mm is molded onto the outside of the pinch 6 as a base. The sleeve 11 is about 14 mm long.
  • a disk-like contact element 13 which is made of nickel-plated copper with a thickness of 1.1 mm, is embedded in the sleeve 11 transversely to the lamp axis at a distance of 1 mm (minimum value is 0.5 mm) from the sleeve end.
  • a hollow neck part 14 is integrally formed on the back of the cap 13, see also FIG. 3c.
  • a molybdenum wire with a diameter of 0.6 mm is arranged as an external power supply 15 between the film 7 and the cap 13 and is welded to the neck part 14.
  • a particularly good, stable alignment of the cap 13 is achieved here in that the sleeve 11 is heated after or during attachment to the pinch in the area of a section 40 behind the cap 13 and this section 40 is molded onto the neck part 14 so that it is significantly reduced in diameter as a constricted section 40.
  • No glass-metal connection is created, so that there is no need to adjust the thermal expansion coefficients. Rather, section 40 supports the neck part purely mechanically. There is no gas-tight connection.
  • FIG. 4 shows a further exemplary embodiment of a metal halide lamp.
  • the discharge vessel made of quartz glass which is designed as a barrel body 30, includes two electrodes 31 in addition to a metal halide filling.
  • the piston ends are sealed by crushing 32, in which foils 33 are embedded.
  • the outer power supply 21 is guided in a tubular separate sleeve 22, which represents an extension of the discharge vessel, and ends in a socket 23 of an integral base part 24.
  • the base is made in one piece from steel and also includes a plate-like circular disc 25 as a contact element.
  • the bulbous part of the discharge vessel is surrounded by an outer bulb 27, which is rolled up in the region of the transition between the pinch 32 and the sleeve 22 (FIG. 29).
  • 5 shows a further exemplary embodiment of a halogen incandescent lamp in a detail.
  • the contact element 20 is bulged in a plate shape, while the wire-shaped external power supply 21 is angled within the sleeve 11 (19).
  • the angled part 22 is connected with its long side to the back of the contact element 20 by means of resistance welding.
  • a wire-shaped external power supply 21 can also be butt-welded or soldered (17) directly to the contact element 20 in the region of a bulge 18, see FIG. 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

L'invention concerne une lampe dont l'ampoule allongée (1) est scellée au niveau d'extrémités opposées par l'intermédiaire d'éléments d'étanchéité (6 ; 32), un culot étant placé à une extrémité, lequel culot présente un élément de contact électrique (13 ; 25) relié de façon électroconductrice à une alimentation en courant (15 ; 21) conduisant à un moyen lumineux, ledit élément de contact étant introduit dans un allongement tubulaire (11 ; 22) de l'élément d'étanchéité. Cette invention se caractérise en ce que le diamètre extérieur maximal de l'élément de contact (13 ; 25) est adapté avec jeu au diamètre intérieur de la douille.
EP04786757A 2003-09-16 2004-09-14 Lampe electrique scellee des deux cotes et procede de fabrication Withdrawn EP1665318A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342801A DE10342801A1 (de) 2003-09-16 2003-09-16 Zweiseitig verschlossene elektrische Lampe und Verfahren zu deren Herstellung
PCT/DE2004/002036 WO2005029529A2 (fr) 2003-09-16 2004-09-14 Lampe electrique scellee des deux cotes et procede de fabrication

Publications (1)

Publication Number Publication Date
EP1665318A2 true EP1665318A2 (fr) 2006-06-07

Family

ID=34352871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786757A Withdrawn EP1665318A2 (fr) 2003-09-16 2004-09-14 Lampe electrique scellee des deux cotes et procede de fabrication

Country Status (6)

Country Link
US (1) US7750545B2 (fr)
EP (1) EP1665318A2 (fr)
JP (1) JP4582657B2 (fr)
CA (1) CA2539219A1 (fr)
DE (1) DE10342801A1 (fr)
WO (1) WO2005029529A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7612491B2 (en) * 2007-02-15 2009-11-03 Applied Materials, Inc. Lamp for rapid thermal processing chamber
DE102014208112A1 (de) * 2014-04-29 2015-10-29 Knorr-Bremse Gmbh Spulenvorrichtung für eine elektromagnetische Schienenbremse für ein Schienenfahrzeug,magnetische Schienenbremse für ein Schienenfahrzeug und Verfahren zum Montierenzumindest eines Anschlusskabels einer Spule einer elektromagnetischen Schienenbremsefür ein Schienenfahrzeug
EP4441772A1 (fr) * 2021-12-02 2024-10-09 Flaxtec GmbH Lampe à décharge de gaz, réseau de lampes pour tensions de fonctionnement élevées, et utilisation de telles lampes

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
DE1132242B (de) * 1961-01-16 1962-06-28 Patra Patent Treuhand Elektrodeneinschmelzung fuer Hochdruckentladungslampen und Verfahren zu ihrer Herstellung
FR1433551A (fr) 1965-02-18 1966-04-01 Lorraine Carbone Perfectionnements à la fabrication de la lampe à décharge dans le xénon à haute pression
JPS4836794Y1 (fr) * 1970-05-26 1973-11-02
JPS50145181U (fr) * 1974-05-17 1975-12-01
US4202999A (en) * 1978-04-11 1980-05-13 General Electric Company Fused silica lamp envelope and seal
NL7908214A (nl) * 1979-11-09 1981-06-01 Philips Nv Elektrische gloeilamp.
US5006757A (en) * 1989-12-11 1991-04-09 Ushio Denki Kabushiki Kaisha Incandescent lamp
US5241239A (en) 1991-12-18 1993-08-31 North American Philips Corporation Tubular electric lamp having a lamp base sleeve with an access port for securing a contact to a current-conductor
TW297551U (en) * 1992-03-27 1997-02-01 Gen Electric Filament support for incandescent lamps
JPH08203479A (ja) * 1995-01-24 1996-08-09 Haibetsuku:Kk チツプ型ランプ
DE19548523A1 (de) 1995-12-22 1997-06-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Zweiseitig gequetschte Lampe
JP3266186B2 (ja) * 1998-04-28 2002-03-18 ウシオ電機株式会社 放電ランプ
JP3697362B2 (ja) * 1999-02-12 2005-09-21 松下電器産業株式会社 接合方法
JP2000260394A (ja) * 1999-03-05 2000-09-22 Ushio Inc ランプ
JP2001243925A (ja) * 2000-02-29 2001-09-07 Toshiba Lighting & Technology Corp ランプ
US20030201703A1 (en) * 2002-04-30 2003-10-30 Makoto Horiuchi High pressure discharge lamp, lamp with reflecting mirror and image projecting device

Non-Patent Citations (1)

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Title
See references of WO2005029529A2 *

Also Published As

Publication number Publication date
WO2005029529A3 (fr) 2005-09-09
WO2005029529A2 (fr) 2005-03-31
JP4582657B2 (ja) 2010-11-17
CA2539219A1 (fr) 2005-03-31
US7750545B2 (en) 2010-07-06
US20070001576A1 (en) 2007-01-04
DE10342801A1 (de) 2005-04-28
JP2007506225A (ja) 2007-03-15

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