EP0588201B1 - Lampe à décharge haute pression et procédé pour la fabrication d'une lampe à décharge à haute pression - Google Patents

Lampe à décharge haute pression et procédé pour la fabrication d'une lampe à décharge à haute pression Download PDF

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Publication number
EP0588201B1
EP0588201B1 EP93114286A EP93114286A EP0588201B1 EP 0588201 B1 EP0588201 B1 EP 0588201B1 EP 93114286 A EP93114286 A EP 93114286A EP 93114286 A EP93114286 A EP 93114286A EP 0588201 B1 EP0588201 B1 EP 0588201B1
Authority
EP
European Patent Office
Prior art keywords
lamp
sheet
discharge vessel
metal frame
metal
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
EP93114286A
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German (de)
English (en)
Other versions
EP0588201A2 (fr
EP0588201A3 (fr
Inventor
Karl-Heinz Gleixner
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 EP0588201A2 publication Critical patent/EP0588201A2/fr
Publication of EP0588201A3 publication Critical patent/EP0588201A3/fr
Application granted granted Critical
Publication of EP0588201B1 publication Critical patent/EP0588201B1/fr
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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/50—Auxiliary parts or solid material within the envelope for reducing risk of explosion upon breakage of the envelope, e.g. for use in mines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space

Definitions

  • the invention relates to a high-pressure discharge lamp according to the preamble of patent claim 1 and to a production method for a high-pressure discharge lamp.
  • Such a lamp is disclosed for example in EP-OS 407 850.
  • This lamp has a discharge vessel which is held axially within an outer bulb by means of a lamp frame.
  • the lamp frame is made in two parts. It consists of a U-shaped frame bracket that is welded to a lamp power supply close to the base and led out of the discharge vessel and to a first power supply that protrudes from the base of the plate, and a metal support rod that runs parallel to the lamp axis and that has a second power supply that protrudes from the base of the plate Connects via a cross strut to the lamp power supply which is remote from the base and led out of the discharge vessel.
  • the metal support rod ends in a ring segment arranged transversely to the lamp axis, with which it rests against the outer bulb wall somewhat below the outer bulb dome.
  • the frame bracket and the metal support rod are made of round metal material.
  • An additional guide element, which is attached to the metal support rod, serves to improve the vibration resistance. It consists of a stamped sheet metal part arranged in a plane perpendicular to the lamp axis Pinch of the discharge vessel is held clamped. The construction and manufacture of this discharge vessel holder are still comparatively complex.
  • Patent Abstract of Japan, Vol. 13, No. 568 relating to JP-A-1-236571 describes a high-pressure discharge lamp having an outer bulb with a flat, approximately E-shaped lamp frame which carries a discharge vessel which is sealed on two sides.
  • the central crosspiece of the approximately E-shaped lamp frame which runs transversely to the lamp axis, is equipped with a pocket-like receptacle for a discharge vessel end.
  • the lamp electrode remote from the base is electrically conductively connected to a first power supply via the upper crossbar, the longitudinal web extending parallel to the axis and the lower crossbar of the E-shaped lamp frame.
  • the lamp electrode near the base is welded directly to a second power supply.
  • the high-pressure discharge lamps produced according to the invention have a lamp frame for holding the discharge vessel, which has two stamped sheet metal parts which are electrically insulated from one another, each of the stamped sheet metal parts being connected to a lamp current lead protruding from the discharge vessel and to a further current lead led to the lamp base.
  • the stamped sheet metal parts form a two-part, essentially U-shaped frame which frames the discharge vessel and possibly a light-transmitting envelope body, which serves as a burst protection and surrounds the discharge vessel, on three sides.
  • stamped sheet metal parts in the frame structure enables the lamp frame to be produced more cost-effectively and the centering and alignment of the discharge vessel in the outer bulb to be considerably facilitated.
  • the stamped sheet metal parts increase the stability and the load-bearing capacity of the lamp frame, which becomes more important when using an additional envelope body serving as a burst protection for the discharge vessel.
  • FIG. 1 shows a high-pressure discharge lamp produced in accordance with a first exemplary embodiment of the invention.
  • the lamp is a high-pressure discharge lamp with a base on one side. It has an essentially rotationally symmetrical outer bulb 1, which has a screw base 2 and a plate base melt 3 at one end.
  • the discharge vessel 4 has a base-near 4a and a base-distant 4b pinch seal, each with a melted-in molybdenum foil 6, which are each conductively connected to one of the electrodes 5.
  • a first lamp power supply 7a near the base is led out of the pinch seal 4a near the base and a second lamp power supply 7b away from the base is led out of the pinch seal 4b remote from the base.
  • These lamp current feeds 7a, 7b are each electrically conductively connected to the molybdenum foil 6 of the corresponding pinch seal 4a or 4b.
  • the entire length of the discharge vessel 4 is surrounded by a double-walled, cylindrical, translucent envelope body 8, which consists of two glass tubes 8a, 8b arranged coaxially with the discharge vessel 4.
  • a double-walled, cylindrical, translucent envelope body 8 which consists of two glass tubes 8a, 8b arranged coaxially with the discharge vessel 4.
  • two circular centering elements 9 which are provided with a web running along a ring diameter, are used, which engage into the open ends of the glass tubes 8a, 8b and rest on their end faces.
  • the discharge vessel 4 and the enveloping body 8 with its centering elements 9 are held by a two-part, metallic lamp frame 10.
  • the lamp frame 10 comprises two further power supply lines 11a, 11b, which are melted into the plate base 3, and two stamped sheet metal parts 12a, 12b.
  • a first stamped sheet metal part 12a is welded to the first, further power supply 11a and to the first power supply 7a close to the base.
  • the second stamped sheet metal part 12b is in the direction of the second one of the outer bulb dome extended power supply 11b and welded to the second lamp power supply 7b remote from the base.
  • the lamp current feeds 7a, 7b are each passed through a central bore in the web of the corresponding centering element 9.
  • Both stamped sheet metal parts 12a, 12b are designed as webs running transversely to the lamp axis II. They are made of nickel sheet and have a thickness of approximately 0.3 mm. The surface normals of the stamped sheet metal parts 12a, 12b are perpendicular to the lamp axis II.
  • the stamped sheet metal parts 12a, 12b are arranged in one plane. They also engage in a fit-shaped slot in the top of the corresponding centering element 9 and press the bottom thereof against the end faces of the glass tubes 8a, 8b of the enveloping body 8.
  • the second stamped sheet metal part 12b has an integrally formed tab 13 which carries an annular holder 14, which anchors the lamp part 10 to an indentation 15 of the outer bulb dome.
  • a getter 16 is fastened inside the outer bulb 1, on the first power supply line 11a led out of the plate base 3.
  • FIG. 2 shows a high-pressure discharge lamp produced in accordance with a second exemplary embodiment of the invention.
  • This second example differs from the first example only in the lamp frame 10 '. In all other details, the two examples are the same.
  • the lamp frame 10 ' comprises two further power supply lines 11a', 11b ', which are melted into the plate base 3, and two stamped sheet metal parts 20, 21.
  • a first stamped sheet metal part 20 is welded to the first power supply 11a 'and to the first power supply 7a close to the base.
  • This stamped sheet metal part 20 is designed as a web running transversely to the lamp axis II.
  • the second stamped sheet metal part 21 is designed as an angle with a straight leg 21a running parallel to the lamp axis II and a leg 21b arranged transversely to the lamp axis II.
  • the leg 21b extending transversely to the lamp axis II is welded to the second lamp power supply 7b remote from the base.
  • it has an integrally formed tab 13 'which carries an annular holder 14' which anchors the stamped sheet metal part 21 at an indentation 15 in the outer bulb dome.
  • the leg 21a running parallel to the lamp axis II is welded at its free end to the second power supply 11b 'which is melted into the plate base 3.
  • Both stamped sheet metal parts 20, 21 have a thickness of approximately 0.3 mm and are arranged in the same plane. Their surface normals are perpendicular to the lamp axis II, that is, the lamp axis II runs parallel to the top and bottom of both stamped sheet metal parts 20, 21.
  • the stamped sheet metal parts 20, 21 form a two-part, essentially U-shaped frame, which the envelope body 8 and that Discharge vessel 4 surrounds from three sides.
  • FIG. 3 shows the discharge vessel 4 with an enveloping body 8 and initially a one-piece stamped sheet metal frame according to the second example, before being installed in the outer bulb 1.
  • a one-piece, essentially U-shaped punched sheet metal frame is punched out of a nickel sheet with a thickness of approximately 0.3 mm.
  • This frame has the shape of a rectangular frame from which one of the two long side parts has been separated.
  • the stamped sheet metal frame has a rectilinear section 21a and two legs 20, 21b angled in the same direction and lying in one plane.
  • the two legs 20, 21b are shorter than the rectilinear section 21a.
  • the leg 21b also has an integrally formed, outwardly directed tab 13 'located in the plane of the frame which opens into an annular holder 14' located in the plane of the frame.
  • Discharge vessel 4 produced by the method is placed over two cylindrical glass tubes 8a, 8b which are open at the ends and which envelop the discharge vessel 4 over its entire length.
  • the lamp current leads 7a, 7b protruding from the discharge vessel 4 are each threaded through a central bore of a centering element 9, so that the centering elements 9 rest on the end face of the glass tubes 8a, 8b.
  • the centering elements 9 have shoulders which reach into the open ends of the glass tubes 8a, 8b and center them so that they are arranged coaxially with the discharge vessel 4.
  • the two glass tubes 8a, 8b thus form a translucent, double-walled envelope body 8 for the discharge vessel 4.
  • This structural unit consisting of the discharge vessel 4, the envelope body 8 and centering elements 9, is positioned between the angled legs 20, 21b, so that the envelope bulb wall and the discharge vessel 4 are aligned parallel to the rectilinear section 21a of the punched sheet metal frame.
  • the two angled legs 20, 21b engage in a suitably shaped slot on the top of the corresponding centering element 9 and press the bottom of the latter against the end face of the envelope body 8.
  • a first lamp power supply 7a close to the base is provided with the leg 20 and the second, remote from the base Power supply 7b welded to the leg 21b, which has the integrally formed tab 13 'and the holder 14'.
  • the dimensions of the punched sheet metal frame are matched to the dimensions of the structural unit consisting of the discharge vessel 4, envelope body 8 and centering elements 9, that the centering elements 9 through the two legs 20, 21b without any play in their position on the end faces of the enveloping body 8 are fixed and thus the entire assembly is stabilized.
  • the lamp power supply lines 7a, 7b After the lamp power supply lines 7a, 7b have been welded to the stamped sheet metal frame, the latter is cut open at two markings 22 which delimit a corner region 23 with the aid of a laser, that is to say the corner region 23 is separated out of the stamped sheet metal frame so that it is separated into two stamped sheet metal parts which are electrically insulated from one another 20, 21 is separated.
  • the first stamped sheet metal part 20 welded to the lamp current supply 7a near the base then has the shape of a web arranged transversely to the lamp axis II, while the second stamped sheet metal part 21 has the shape of an angle with a leg running parallel 21a and a cross 21b to the lamp axis, as already described above was described in the text.
  • the manure vessel 4, the enveloping body 8 with its centering elements 9, the two stamped sheet metal parts 20, 21 and the lamp current leads 7a, 7b welded to them form a stable unit in itself.
  • the plate foot 3 with the melted-in power supply lines 11a ', 11b' is produced in the usual way.
  • a first power supply 11a ' which is melted into the base 3 of the plate is welded to the free end of the leg 20.
  • the second power supply 11b ' which is melted into the plate base 3 is welded to the leg 21a which runs parallel to the wall of the enveloping body 8.
  • the tab 13 'and the annular holder 14' are bent out of the plane of the punched sheet metal frame, so that the tab 13 'is at an acute angle and the ring plane of the holder 14' is one right Form an angle with the lamp axis II.
  • the lamp axis II then runs approximately through the center of the holder ring 14 '.
  • the annular holder 14 When the discharge vessel 4 with the enveloping body 8 and the frame structure is inserted into the outer bulb 1, the annular holder 14 'comprises an indentation 15 in the outer bulb dome.
  • the plate foot melting and the base of the lamp are then carried out in the usual manner familiar to the person skilled in the art.
  • the stamped sheet metal parts are used here on the one hand to hold the discharge vessel 4 and the enveloping body 8 and on the other hand also to supply power to the discharge vessel 4 by establishing an electrically conductive connection between each of the lamp power supply lines and the corresponding further power supply line fused into the base of the plate.
  • the manufacturing method according to the first exemplary embodiment for a high-pressure discharge lamp according to the first example differs from the manufacturing method described here according to the second exemplary embodiment only in that not only the corner region is produced for manufacturing a lamp according to the first example from the punched sheet metal frame shown in FIG 23, but additionally also the entire section 21a running parallel to the wall of the enveloping body 8 is separated.
  • the power supply 11b melted into the plate base 3 is then welded to the leg 21b which, after the punched sheet metal frame has been separated (FIG. 3), results in the second punched sheet metal part 12b.
  • the enveloping body 8 consists of quartz glass and the centering elements 9 of a technical ceramic.
  • the invention is not limited to the two exemplary embodiments explained in more detail.
  • the outer bulb instead of a plate foot and a plate foot melting, the outer bulb can also have a pinch seal in which the further current leads are then melted.
  • the envelope body for the discharge vessel can consist of only one glass tube.
  • the dimensions of the stamped sheet metal parts depend on the dimensions of the manure container. For example, it may be necessary to use a thicker stamped sheet for the manufacture of the lamp frame for high-pressure discharge lamps with power consumption greater than 150 W for reasons of stability.
  • the frame structure produced according to the invention can also be used for double-ended high-pressure discharge lamps.
  • the only difference in the frame structure would be that in the case of a double-ended high-pressure discharge lamp, the tab 13 or 13 'and the annular holder 14 or 14 'for anchoring the lamp frame in the outer bulb would be missing.
  • a double-ended high-pressure discharge lamp would of course also have two plate base melts or two pinch seals.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Claims (3)

  1. Procédé de fabrication d'une lampe à décharge à haute pression qui comporte les dispositions suivantes:
    - une enceinte (4) de décharge rendue étanche des deux côtés, comportant une atmosphère ionisable qui y est renfermée et des électrodes (5) qui y sont disposées,
    - une ampoule (1) extérieure sensiblement symétrique de révolution, qui comporte à au moins une extrémité un culot (2) de lampe et dans laquelle l'enceinte (4) de décharge est disposée symétriquement par rapport à un axe,
    - une première entrée (7a) de courant de la lampe, qui est sortie d'une première extrémité rendue étanche de l'enceinte (4) de décharge,
    - une deuxième entrée (7b) de courant de la lampe, qui est sortie d'une deuxième extrémité rendue étanche de l'enceinte (4) de décharge,
    - un support (10; 10') de lampe servant à fixer l'enceinte (4) de décharge,
    - deux entrées (11a, 11b; 11a', 11b') de courant supplémentaires, qui font partie du support (10; 10') de lampe et qui sont reliées de manière conductrice de l'électricité aux pièces du culot (2) de lampe,
    - le support (10; 10') de lampe comporte deux pièces (12a, 12b; 20, 21) de tôle obtenues par découpage, qui sont isolées l'une de l'autre du point de vue électrique, une première pièce (12a; 20) de tôle obtenue par découpage étant reliée de manière conductrice de l'électricité à la première entrée (7a) de courant de la lampe et à une première entrée (11a; 11a') de courant supplémentaire, et la deuxième pièce (12b; 21) de tôle obtenue par découpage étant reliée de manière conductrice de l'électricité à la deuxième entrée (7b) de courant de la lampe et à la deuxième entrée (11b; 11b') de courant supplémentaire,
    - les deux pièces (12a, 12b; 20, 21) de tôle obtenues par découpage sont dans un plan et
    - les normales à la surface des pièces (12a, 12b; 20, 21) de tôle obtenues par découpage sont orthogonales à l'axe (I-I) de la lampe,
       caractérisé en ce que le procédé de fabrication comprend les étapes opératoires suivantes:
    - on découpe un cadre de tôle découpé d'une pièce, sensiblement en forme de U, ce cadre de tôle découpé ayant une partie (21a) s'étendant de manière rectiligne et deux branches (20, 21b) qui en sont coudées dans la même direction et qui se trouvent dans un plan,
    - on monte l'enceinte (4) de décharge sur le cadre de tôle découpé, l'enceinte (4) de décharge étant mise en position entre les branches (20, 21b) coudées du cadre de tôle découpé et parallèlement à la partie (21a) du cadre en tôle découpé s'étendant de manière rectiligne et une première entrée (7a) de courant de la lampe étant soudée à une première branche (20) coudée et la deuxième entrée (7b) de courant de la lampe étant soudée à la deuxième branche (21b) coudée,
    - on sépare le cadre de tôle découpé entre les deux points de soudure aux entrées (7a, 7b) de courant de la lampe, si bien que la liaison électrique entre ces entrées (7a, 7b) de courant de la lampe est interrompue et que le cadre de tôle découpé est subdivisé en deux pièces (20, 21) de tôle découpées,
    - on soude une première entrée (11a, 11a') supplémentaire de courant de la lampe à la première pièce (20) de tôle découpée du cadre de tôle découpé et
    - on soude la deuxième entrée (7b) supplémentaire de courant de la lampe à la deuxième pièce (21) de tôle découpée du cadre de tôle découpé.
  2. Procédé de fabrication d'une lampe à décharge à haute pression suivant la revendication 1, caractérisé en ce que la partie (21a) s'étendant de manière rectiligne est séparée du cadre de tôle découpé.
  3. Procédé de fabrication d'une lampe à décharge à haute pression suivant la revendication 1, caractérisé en ce que, lors du montage de l'enceinte (4) de décharge sur le cadre de tôle découpé, avant de souder les entrées (7a, 7b) de courant de la lampe au cadre de tôle découpé, on enfile un élément (8) de protection cylindrique sur l'enceinte de décharge et on réalise un centrage au moyen de deux éléments (9) de centrage qui sont montés sur les faces frontales et qui sont enfilés chacun sur une des deux entrées (7a, 7b) de courant de la lampe.
EP93114286A 1992-09-15 1993-09-06 Lampe à décharge haute pression et procédé pour la fabrication d'une lampe à décharge à haute pression Expired - Lifetime EP0588201B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4230815A DE4230815A1 (de) 1992-09-15 1992-09-15 Hochdruckentladungslampe und Herstellungsverfahren für eine Hochdruckentladungslampe
DE4230815 1992-09-15

Publications (3)

Publication Number Publication Date
EP0588201A2 EP0588201A2 (fr) 1994-03-23
EP0588201A3 EP0588201A3 (fr) 1995-01-18
EP0588201B1 true EP0588201B1 (fr) 1997-11-19

Family

ID=6467992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114286A Expired - Lifetime EP0588201B1 (fr) 1992-09-15 1993-09-06 Lampe à décharge haute pression et procédé pour la fabrication d'une lampe à décharge à haute pression

Country Status (4)

Country Link
US (1) US5440196A (fr)
EP (1) EP0588201B1 (fr)
JP (1) JPH06124688A (fr)
DE (2) DE4230815A1 (fr)

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US5594294A (en) * 1994-10-31 1997-01-14 General Electric Company Lamp assembly with a resilient retaining lamp mount structure
DE59705177D1 (de) * 1997-01-31 2001-12-06 Heraeus Noblelight Gmbh Optischer Strahler
AU745886B2 (en) * 1999-12-20 2002-04-11 Toshiba Lighting & Technology Corporation A high-pressure metal halide A.C. discharge lamp and a lighting apparatus using the lamp
GB2362257B (en) * 2000-03-24 2005-01-05 Advanced Lighting Tech Inc System for supporting arc tubes in HID lamps
US6741013B2 (en) * 2000-12-13 2004-05-25 General Electric Company Shrouded electric lamp having functionally distinguishable center supports
ITTO20050585A1 (it) * 2005-08-23 2007-02-24 Space Cannon Vh Srl Lampada a scarica, in particolare alimentata da corrente continua
DE102006030275A1 (de) * 2006-06-30 2008-01-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schutzhülle für Lampen und zugehörige Baueinheit

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US2267090A (en) * 1941-01-02 1941-12-23 Westinghouse Electric & Mfg Co Leading-in conductor
US3407123A (en) * 1964-05-29 1968-10-22 Sylvania Electric Prod Electric lamps and method of detecting leaks in such lamps
NL8101723A (nl) * 1981-04-08 1982-11-01 Philips Nv Hogedrukkwikdampontladingslamp. 080481 hogedrukontladingslamp.
HU205485B (en) * 1986-10-20 1992-04-28 Tungsram Reszvenytarsasag Metal halogen discharge lamp containing alkali-halogenide additive
DE3702481A1 (de) * 1987-01-28 1988-08-11 Philips Patentverwaltung Gasentladungslampe
JPH083990B2 (ja) * 1987-03-05 1996-01-17 松下電子工業株式会社 放電ランプ
JP2661947B2 (ja) * 1988-03-17 1997-10-08 松下電子工業株式会社 高圧放電ランプ
US4868449A (en) * 1988-05-06 1989-09-19 North American Philips Corporation Sheet metal support for dual arc discharge lamps and method of making
DE69007645T2 (de) * 1989-02-01 1994-10-20 Philips Nv Hochdruckgasentladungslampe.
DE8908561U1 (fr) * 1989-07-13 1989-09-21 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
US5039912A (en) * 1989-09-08 1991-08-13 U.S. Philips Corporation High-pressure discharge lamp
US5252885A (en) * 1989-12-11 1993-10-12 Gte Products Corporation Metal halide arc discharge lamp assembly
US5023506A (en) * 1989-12-28 1991-06-11 North American Philips Corporation Explosion proof high pressure discharge lamp

Also Published As

Publication number Publication date
EP0588201A2 (fr) 1994-03-23
EP0588201A3 (fr) 1995-01-18
DE4230815A1 (de) 1994-03-17
US5440196A (en) 1995-08-08
DE59307699D1 (de) 1998-01-02
JPH06124688A (ja) 1994-05-06

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