EP2052399B1 - Procédé de réalisation et d'insertion d'un support d'électrodes doté d'un filament spiralé dans une ampoule de lampe à décharge - Google Patents

Procédé de réalisation et d'insertion d'un support d'électrodes doté d'un filament spiralé dans une ampoule de lampe à décharge Download PDF

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Publication number
EP2052399B1
EP2052399B1 EP07822213A EP07822213A EP2052399B1 EP 2052399 B1 EP2052399 B1 EP 2052399B1 EP 07822213 A EP07822213 A EP 07822213A EP 07822213 A EP07822213 A EP 07822213A EP 2052399 B1 EP2052399 B1 EP 2052399B1
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EP
European Patent Office
Prior art keywords
electrode
discharge vessel
strut
electrode holders
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 - Fee Related
Application number
EP07822213A
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German (de)
English (en)
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EP2052399B8 (fr
EP2052399A2 (fr
Inventor
Klaus Pankratz
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
Osram GmbH
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Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Publication of EP2052399A2 publication Critical patent/EP2052399A2/fr
Application granted granted Critical
Publication of EP2052399B1 publication Critical patent/EP2052399B1/fr
Publication of EP2052399B8 publication Critical patent/EP2052399B8/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • 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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/18—Assembling together the component parts of electrode systems
    • 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
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps

Definitions

  • the invention relates to a method for manufacturing and introducing an electrode frame with a lamp filament into a discharge vessel of a discharge lamp.
  • a low-pressure discharge lamp which has an at least partially extending into a discharge vessel electrode.
  • the electrode comprises an electrode frame, which electrode frame comprises two current-carrying electrode holders made of Vakuvit wire. At the front ends of these two separate electrode holders a lamp coil is attached. This subarea is located inside the discharge lamp. Also within this discharge vessel is a glass bead, which connects the two electrode holders and holds them. In the area in which the glass bead is attached, the electrode holders are bent like a bottle neck.
  • FIG. 1 Such a discharge lamp known from the prior art with a corresponding electrode frame is shown schematically.
  • the electrode frame 1 comprises the two electrode holders 2 and 3, which are connected to a glass bead 5 in a tapered curved region 4 arranged within a discharge vessel 7.
  • At the front ends of the electrode holders 2 and 3 extends transversely across a lamp filament 6.
  • At a lower end region 71 of the discharge vessel 7, the outwardly guided electrode holders 2 and 3 are squeezed and fused into the material, so that the discharge vessel 7 is closed gas-tight at this end region 71.
  • a so-called wiping edge 72 is formed, which represents the lower limit of the phosphor coating of the discharge vessel 7.
  • the electrode frame 1 extends relatively far into the discharge vessel 7, whereby the discharge space is reduced. This results in a distance d1 between the lamp coil 6 and the lower end portion 71 of about 20 mm. Furthermore, a distance d2 between the lamp filament 6 and the glass bead 5 is dimensioned at about 10 mm.
  • Fig. 2 an enlarged view of the electrode frame 1 is shown. It can be seen that in the tapered region 4, in which the glass bead 5 is formed drop-like, the two electrode holders 2 and 3 are arranged very close to each other.
  • the known electrode frame 1 is produced on the so-called FSP (Fußspannmaschine) in several successive manufacturing steps.
  • FSP Fußspannmaschine
  • the individual wires of the electrode holders 2 and 3 are directed, the wires cut, the frame geometry bent accordingly and thus bent the two electrode holders 2 and 3 in their shown shapes, placed the glass bead 5, the electrode frame 1 bent into its final shape, the Glass bead 5 melted, the electrode holders 2 and 3 planed, bent at the front end portions of the electrode holders 2 and 3 hooks to then insert the lamp filament 6 there and can jam.
  • a Sp Gill the electrode holders 2 and 3 is then bent, the lamp filament 6 bepastet, bent a final final dimension and then then the electrode frame 1 inserted into a frame feed.
  • the glass bead serves to stabilize the electrode frame 1 during handling between the individual processing steps up to the crushing of the end region 71.
  • Disadvantages of this design with a glass bead are the fact that a special glass, for example OG131, is required as an expensive material for this purpose , A current insulation up to temperatures of about 600 ° C must be guaranteed, which is not possible with conventional soft glasses.
  • no safe EOL (End of Life) behavior is guaranteed.
  • situations may occur in which, despite a broken lamp filament 6 power supplies to plastic parts and then melt them, since the glass bead 5 is conductive.
  • pearl spots can occur in the burner positions.
  • the known from the prior art production of such an electrode frame 1 and their introduction into the discharge vessel of a discharge lamp is relatively complex and also very expensive.
  • undesirable errors can occur, which can lead to damage or destruction of parts of the discharge lamp.
  • a method according to the invention for producing an electrode frame and for introducing such an electrode frame with a lamp filament into a discharge vessel of a discharge lamp initially two separate electrode holders in the form of substantially elongated wires are provided. Furthermore, an elongated strut is attached to the two spaced apart electrode holders. At front end portions of the electrode holders, a lamp filament is mounted so that this lamp filament extends between the two electrode holders. The electrode frame produced in this embodiment is then introduced in regions in the discharge vessel, so that at least the lamp filament is disposed within the discharge vessel. In particular, by attaching an elongated cross member, the stability criterion of the electrode holders and thus also of the entire electrode frame can be ensured.
  • the stability is at least as great as when mounting a propfenartigen glass bead.
  • the electrode holders in the region of this stabilizing element spaced apart from each other as in a design with a propfenartigen glass bead.
  • the elongate strut can be attached to the electrode holders much more easily and inexpensively, and is itself preferably made of materials which are much cheaper than expensive pearl glass, for example OG131.
  • the electrode frame is introduced into the discharge vessel such that the elongate strut is positioned outside the discharge vessel.
  • this arrangement can also be used to ensure accessibility to the transverse strut at any time. Even after the gas-tight fusing and in particular after squeezing the end region of the discharge vessel, into which the electrode frame extends into the discharge vessel, a handling of this elongate strut can be carried out.
  • the elongate strut is preferably completely separated from the electrode holders after the zone-wise introduction of the electrode frame into the discharge vessel. This separation of the elongated strut preferably takes place after crushing of an end region of the discharge vessel for gastight sealing of the discharge vessel.
  • the elongated strut thus serves during the manufacture and introduction of the electrode frame into the discharge vessel for stabilization and can be removed, in particular after squeezing, after the electrode frame has been mechanically stably arranged anyway.
  • the elongate strut is separated prior to pumping the discharge vessel.
  • Pumping means evacuating and filling the discharge vessel with a filling material.
  • the elongated strut is preferably at least 12 mm, in particular at least 15 mm, in particular at least 20 mm, spaced from the lamp filament attached to the electrode holders.
  • the elongate strut is welded to the electrode holders.
  • a welding process proves to be particularly suitable in accordance with resistance welding.
  • the mechanically stable connection of the electrode frame can thereby be ensured during production and the primary introduction of the electrode frame into the discharge vessel.
  • the elongated strut preferably has a length between about 5 mm and 10 mm. In particular, the length of this cross member is about 7 mm.
  • the elongate strut is formed as an electrically conductive element.
  • the elongate strut is a wire, in particular a vacuum wire.
  • the electrode holders are made of such a wire, in particular a Vakuvit wire, and the elongate strut may be formed of a corresponding material.
  • the elongate strut has a diameter of about 0.4 mm. This also corresponds to the preferred diameter of the electrode holders.
  • Such a thickness of the elongate strut allows for reliable attachment to the electrode supports and also provides sufficient stability and position retention of the electrode supports during insertion and further securing of the electrode support to the discharge vessel.
  • the elongate strut is formed of an electrically non-conductive material.
  • a stable plastic or the like may be provided.
  • this can be done in various ways on the electrode holders be attached, for example, a sticking, a clinging or the like may be mentioned.
  • an electrically nonconductive element with a corresponding temperature stability is formed, so that it can also be provided that this elongated strut is arranged inside the discharge vessel when the electrode frame is introduced into the discharge vessel and a pinch of the end region, on which the electrode frame is inserted, is completed.
  • a material design of the elongate strut it can remain permanently attached during operation of the discharge lamp, since a current bridge does not arise in this regard.
  • the elongate strut is formed with such a length that after attachment of the strut to the electrode mounts, the distance between the two electrode mounts in the region of the attached strut substantially the distance of the two electrode mounts to the front end portions where the lamp filament is mounted, equivalent.
  • a variety of bending and forming a tapered, bottle-like portion of the electrode holders, as required in the formation of a glass bead in the prior art, can be prevented thereby.
  • the electrode frame must protrude less far into the discharge vessel than in the prior art Fig. 1 the case is.
  • the degree of use can be increased because no pearl bursting can occur.
  • an increase in performance of the contemplatspannmaschine can be achieved, since geometriebiegungen and a Perleneinschmelzen, as required in the art, omitted.
  • the discharge lamp is also EOLproof. Also maintenance costs for bending tools and a melting burner for introducing the glass bead can be saved.
  • FIG. 3 a manufacturing state of an electrode frame 1 'is shown in a schematic representation, which is introduced into a discharge vessel 7 of a discharge lamp.
  • the electrode frame 1 ' is made in its basic production of two electrode holders 2' and 3 ', a lamp filament 6' and an elongate strut 8.
  • two separate pieces of wire are initially provided.
  • the electrode holders 2 'and 3' are made of a vacuum wire and have substantially the same length.
  • an elongate strut 8 is then fastened between the electrode holders 2 'and 3' arranged substantially parallel to one another.
  • the elongated strut 8 is also formed in the embodiment of Vakuvit wire and has a diameter of about 0.4 mm, which also corresponds to the diameter of the two electrode holders 2 'and 3'.
  • the elongate strut 8 is introduced as a transverse strut between the two electrode holders 2 'and 3' and is attached to both electrode holders 2 'and 3'. attached by resistance welding.
  • the elongated strut 8 is set back to front end portions 21 and 31 of the electrode holders 2 'and 3'.
  • the distance d4 between these front end portions 21 and 31 of the electrode holders 2 'and 3' to the elongate strut 8 is about 15 mm.
  • the electrode holders 2 'and 3' thus have a substantially constant distance d3 over their entire length. This is in the exemplary embodiment about 7 mm and thus corresponds substantially to the length of the elongated strut 8.
  • the wires are planarized. Subsequently, hooks are then bent at the front ends 21 and 31, and subsequently the lamp filament 6 is inserted into these bent hooks and clamped there. Then a Sp Sonbine the electrode holders 2 'and 3' is bent and the lamp filament 6 is pasted. Then follows a bending of the final dimension of the electrode frame 1 'and an insertion of this in the rack feed. In this state of manufacture, the electrode frame 1 'is in its basic provision completed. Subsequently, this electrode frame 1 'is then introduced into the discharge vessel 7. For this purpose, the front region, to which the lamp filament 6 is fastened, is introduced at an end region 71 of the discharge vessel 7 into the discharge space. This follows in the embodiment so far that the elongate strut 8 is still outside the discharge vessel 7.
  • the electrode frame 1 ' is inserted into the discharge vessel 7 so far that a distance d5 between the lamp filament 6 and the lower edge region of the end region 71 is formed.
  • This is in the exemplary embodiment about 10 mm and is thus substantially smaller, in particular by half smaller than the distance d1 in the conventional embodiment according to Fig. 1 ,
  • the electrode frame 1 'must therefore be introduced far less into the discharge vessel 7, whereby the discharge space can be increased in comparison to the prior art.
  • the distance d4 between the lamp filament 6 and the elongate strut 8 is, as already explained, in the exemplary embodiment about 15 mm.
  • the electrode frame 1 'and thus also the lamp filament 6 extend at the front ends 21 and 31 of the electrode holders 2' and 3 'by a relatively small value beyond the wiping edge 72 into the discharge vessel 7.
  • the elongated strut 8 is then separated from the electrode holders 2 'and 3', in which, for example, cutting takes place with a corresponding cutting tool.
  • the pumping operation takes place in the discharge vessel 7, in which this is evacuated and appropriate filling material is introduced.
  • FIG. 4 shown enlarged view of the electrode frame 1 'shows a manufacturing state after the actual parts assembly of the electrode frame 1' and prior to introduction into the discharge vessel. 7

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

L'invention concerne un procédé de réalisation et d'insertion d'un support d'électrodes (1') doté d'un filament spiralé (6) dans une ampoule (7) de lampe à décharge, ce procédé comprenant les opérations suivantes: a) préparer deux porte-électrodes (2',3') séparés se présentant sous forme de fils sensiblement allongés; b) fixer un élément de liaison (8) allongé sur les deux porte-électrodes (2',3') espacés l'un de l'autre; c) placer le filament spiralé (6) sur les zones terminales (21,31) avant des porte-électrodes (2',3'); d) introduire partiellement le support d'électrodes (1') réalisé aux étapes a) à c) dans l'ampoule (7).

Claims (9)

  1. Procédé de réalisation et d'insertion d'un support d'électrodes (1') doté d'un filament spiralé (6) dans un récipient de décharge (7) d'une lampe à décharge, dans lequel on exécute les étapes suivantes :
    a) mise à disposition de deux porte-électrode distincts (2', 3') en forme de fils qui se présentent sous une forme sensiblement allongée ;
    b) fixation d'une tige allongée (8) sur les deux porte-électrode (2', 3') espacés l'un de l'autre ;
    c) montage du filament spiralé (6) au niveau de zones terminales antérieures (21, 31) des porte-électrode (2',3') ;
    d) insertion partielle du support d'électrode (1') réalisé aux étapes a) à c) dans le récipient de décharge (7),
    caractérisé en ce que le support d'électrode (1') est inséré de manière telle dans le récipient de décharge (7) que la tige allongée (8) est positionnée en dehors du récipient de décharge (7).
  2. Procédé selon la revendication 1, caractérisé en ce que la tige allongée (8) est séparée des porte-électrode (2', 3') après l'insertion partielle du support d'électrode (1') dans le récipient de décharge (7).
  3. Procédé selon la revendication 2, caractérisé en ce que la tige (8) est séparée après le sertissage d'une zone terminale (71) du récipient de décharge (7).
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que la tige (8) est séparée avant le pompage du récipient de décharge (7).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la tige allongée (8) est fixée aux porte-électrode (2', 3') à une distance d'au moins 12 mm, en particulier d'au moins 15 mm, et plus particulièrement d'au moins 20 mm par rapport au filament spiralé (6).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que la tige allongée (8) est soudée aux porte-électrode (2', 3') et y est plus particulièrement fixée par soudage par résistance.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la tige allongée (8) est réalisée de manière électriquement conductrice.
  8. Procédé selon la revendication 7, caractérisé en ce que la tige allongée (8) est un fil, et plus particulièrement un fil Vakuvit.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la tige allongée (8) présente une longueur telle que, après le montage de ladite tige (8) sur les porte-électrode (2', 3'), la distance (d3) entre les deux porte-électrode (2', 3') dans la zone de la tige (8) correspond sensiblement à la distance (d3) entre les deux porte-électrode (2', 3') au niveau des zones terminales antérieures (21, 31).
EP07822213A 2006-11-08 2007-11-05 Procédé de réalisation et d'insertion d'un support d'électrodes doté d'un filament spiralé dans une ampoule de lampe à décharge Expired - Fee Related EP2052399B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006052760A DE102006052760A1 (de) 2006-11-08 2006-11-08 Verfahren zum Fertigen und Einbringen eines Elektrodengestells mit einer Lampenwendel in ein Entladungsgefäß einer Entladungslampe
PCT/EP2007/061884 WO2008055873A2 (fr) 2006-11-08 2007-11-05 Procédé de réalisation et d'insertion d'un support d'électrodes doté d'un filament spiralé dans une ampoule de lampe à décharge

Publications (3)

Publication Number Publication Date
EP2052399A2 EP2052399A2 (fr) 2009-04-29
EP2052399B1 true EP2052399B1 (fr) 2011-09-07
EP2052399B8 EP2052399B8 (fr) 2012-02-22

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ID=39277497

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Application Number Title Priority Date Filing Date
EP07822213A Expired - Fee Related EP2052399B8 (fr) 2006-11-08 2007-11-05 Procédé de réalisation et d'insertion d'un support d'électrodes doté d'un filament spiralé dans une ampoule de lampe à décharge

Country Status (6)

Country Link
US (1) US20100035506A1 (fr)
EP (1) EP2052399B8 (fr)
CN (1) CN101517689A (fr)
BR (1) BRPI0720509A2 (fr)
DE (1) DE102006052760A1 (fr)
WO (1) WO2008055873A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006052026A1 (de) 2006-11-03 2008-05-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Anlaufkörper für eine Niederdruckentladungslampe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178050A (en) * 1976-01-16 1979-12-11 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Manufacture of halogen cycle incandescent lamps
US4703221A (en) * 1986-04-18 1987-10-27 Ochoa Carlos G Electric lamp and method of making
JPH08298096A (ja) * 1995-04-28 1996-11-12 Matsushita Electric Works Ltd 低圧放電灯用電極及びその製造方法
DE102004004655A1 (de) * 2004-01-29 2005-08-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Niederdruckentladungslampe

Also Published As

Publication number Publication date
EP2052399B8 (fr) 2012-02-22
EP2052399A2 (fr) 2009-04-29
DE102006052760A1 (de) 2008-05-15
BRPI0720509A2 (pt) 2015-06-16
WO2008055873A3 (fr) 2008-11-27
CN101517689A (zh) 2009-08-26
WO2008055873A2 (fr) 2008-05-15
US20100035506A1 (en) 2010-02-11

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