EP0255638B1 - Lampe à incandescence et fabrication de son ampoule tubulaire - Google Patents

Lampe à incandescence et fabrication de son ampoule tubulaire Download PDF

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Publication number
EP0255638B1
EP0255638B1 EP87110420A EP87110420A EP0255638B1 EP 0255638 B1 EP0255638 B1 EP 0255638B1 EP 87110420 A EP87110420 A EP 87110420A EP 87110420 A EP87110420 A EP 87110420A EP 0255638 B1 EP0255638 B1 EP 0255638B1
Authority
EP
European Patent Office
Prior art keywords
section
mandrel
wire
spiral
bulb
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.)
Revoked
Application number
EP87110420A
Other languages
German (de)
English (en)
Other versions
EP0255638A3 (en
EP0255638A2 (fr
Inventor
Emil Czako
Zoltan Losonczy
Tibor Hornyak
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.)
Tungsram Rt
Original Assignee
Tungsram Rt
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10963811&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0255638(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tungsram Rt filed Critical Tungsram Rt
Priority to AT87110420T priority Critical patent/ATE89100T1/de
Publication of EP0255638A2 publication Critical patent/EP0255638A2/fr
Publication of EP0255638A3 publication Critical patent/EP0255638A3/de
Application granted granted Critical
Publication of EP0255638B1 publication Critical patent/EP0255638B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp

Definitions

  • the invention relates to an electric light bulb with an incandescent spiral, which is enclosed by a tube bulb and is supported by at least one retaining ring, which in turn is in contact with the tube bulb.
  • the incandescent lamp is a gas-filled incandescent lamp (so-called halogen light floodlight) with a tube bulb flattened at both ends, especially of halogen line spotlights. Furthermore, the invention relates to the manufacture of the tubular bulb by forming and inserting the retaining ring in the piston.
  • the spiral is provided in a known manner with the retaining ring in such a way that a mandrel is inserted into the spiral and the part of the retaining ring comprising the spiral is clamped onto the turns of the spiral, after which the spiral provided with the retaining ring is inserted into the tube bulb and the Mandrel is withdrawn.
  • the relatively brittle spiral can break when the mandrel is inserted into the spiral, during the clamping of the retaining ring on the spiral, the spiral can deform in an undesirable manner and further disadvantageous deformations can occur when the spiral is inserted with the retaining ring into the piston.
  • the retaining rings are only loosely fitted to the inner wall of the tube bulb, they cannot hold the spiral in the axis of the bulb with corresponding certainty during the operation of the incandescent lamp, so the spiral can easily move out of the axis of the tube bulb.
  • an essential process step in the manufacture of the retaining ring is the one in which a mandrel is drawn into the spiral in order to be able to pull the ring part comprising the spiral onto the spiral.
  • the object of the invention in addition to eliminating the disadvantages mentioned above, is to provide an incandescent lamp with such a retaining ring, which forms a unit with the tubular bulb, and furthermore the development of such a method for producing the tubular bulb with the retaining ring, with the help of which the complete automation of lamp assembly manufacturing technology can be solved.
  • the invention is based on the finding that the spiral can be held more precisely and without deformation in the axis line of the tube bulb during operation of the lamp if the retaining rings form a unit with the tube bulb and not with the spiral.
  • the spiral of gas-filled incandescent lamps with a tubular bulb flattened at both ends was converted from one with the other Inner wall of the tubular piston in contact with the first section and adjoining, surrounding the spiral and thereby holding this in the axis of the tubular piston second section existing retaining ring, the first of which is provided with a length exceeding a complete turn and a larger diameter Section presses against the inner wall of the tube bulb, during which the second section adjoining the first section, which has a smaller diameter and also a length exceeding a complete turn, has an inner diameter which exceeds the outer diameter of the spiral arranged in its interior and thus surrounds it loosely.
  • one end of a flexible metal wire is attached to a mandrel of appropriate size provided with an insert, the wire by winding onto the mandrel body and onto the insert, likewise in a length exceeding at least one winding turn applied, then cut the wire at its unsecured end.
  • the tube piston located in the axis of the mandrel is then pulled onto the mandrel provided with the wire up to a corresponding stop point. As soon as the tube bulb reaches the stop point, the attached wire end is exposed by pulling back the insert.
  • the larger diameter section of the retaining ring made of flexible metal wire now presses against the inner wall of the tube bulb.
  • the mandrel is withdrawn and, if necessary, positioned to produce another retaining ring.
  • the largest diameter of the retaining ring wound on the mandrel must be designed in such a way that it does not prevent the tube piston from being pulled onto the mandrel, ie the tube piston can be guided onto the mandrel without friction.
  • the diameter of the smaller diameter section of the retaining ring wound on the mandrel is determined by the dimensions of the insert and the elasticity of the wire and has to be such that it surrounds the spiral of the light bulb only loosely.
  • the spiral of the incandescent lamp is pulled into the retaining rings using a special tool.
  • the spiral can move freely inside the retaining ring, so it retains its shape both during assembly and during operation and does not deform.
  • the gas-filled incandescent lamp provided with a retaining ring designed according to the invention can be operated not only in a horizontal position but also in any position.
  • the retaining ring remains in any position of the piston due to its position pressed against the inner wall of the piston in the position assumed during assembly, in contrast to the conventional retaining rings, which only remain in the position received during assembly in the horizontal position of the piston.
  • a holding a spiral 2 in the axis of the tube bulb 1 holding ring 3 is arranged.
  • the retaining ring 3 has two sections: a spiral-shaped first section which exceeds a complete winding path in length and which presses tightly against the inner wall of the tubular bulb 1, and this adjoins the first section and also has a length which adjoins the first section spiral-shaped second section which completely exceeds the winding path, the inside diameter of which is smaller than the diameter of the first section, but exceeds the outside diameter of the spiral which extends in its interior.
  • the retaining ring 3 cannot move in the tube bulb 1, but the spiral 2 can move in the retaining ring 3 in the axial direction, since the length of the second section of the retaining ring is greater than one turn of the winding but shorter than the conventional one, which means that The number of spiral passages that are not glowing in a corresponding manner and are excluded from the function is lower.
  • FIGS. 3a and 3b An example of the manufacture and insertion of this retaining ring 3 in the piston is illustrated schematically in FIGS. 3a and 3b.
  • one end of a flexible metal wire in the present example a tungsten wire
  • a tungsten wire is inserted into a recess formed on the mandrel 5 after the displacement of an insert 6.
  • the insert 6 is returned to its original position, whereby the wire end is fastened.
  • the mandrel 5 is moved in the radial and tangential direction, during which the insert 6 also moves forward.
  • the wire winds on the mandrel body and on the insert.
  • the tube piston 1 arranged in the axis line of the mandrel 5 is moved forward until a predetermined position is reached (up to a stop point), i.e.
  • the advantage of the retaining ring designed according to the invention is that the deformation of the spiral of the incandescent lamp is largely prevented and is secured during operation of holding the spiral in the axis line of the lamp in any position of the incandescent lamp.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (2)

  1. Lampe à incandescence électrique comprenant un filament boudiné (2) à incandescence enfermé dans une ampoule tubulaire (1) et soutenu par au moins un anneau de soutien (3) constitué par un membre en spirale fabriqué d'un fil de métal flexible, l'anneau de soutien (3) comprenant une première partie d'un diamètre plus grand étant en contact avec l'ampoule tubulaire (1), et une deuxième partie d'un diamètre plus petit entourant le filament boudiné (2) et tenant celui-ci environ dans l'axe de l'ampoule tubulaire (1), la lampe étant caractérisée par le fait que la première partie de l'anneau de soutien (3) est d'une longueur dépassant au moins une spire complète et s'appuie contre la paroi intérieure de l'ampoule tubulaire (1), tandis que la deuxième partie de l'anneau de soutien (3) se rattachant à la première partie dépasse aussi la longueur d'au moins une spire complète et a un diamètre intérieur dépassant le diamètre extérieur du filament boudiné (2) disposé dans la deuxième partie.
  2. Fabrication d'une ampoule tubulaire (1) comprenant au moins un anneau de soutien (3) serré contre la paroi intérieure de l'ampoule pour soutenir le filament boudiné (2) à incandescence pour la fabrication d'une lampe à incandescence électrique selon la revendication 1, la fabrication étant caractérisée par les pas suivants pour former l'anneau de soutien (3): un bout d'un fil de métal flexible est fixé à un mandrin (5) équipé d'un insert (6), une longueur du fil dépassant au moins une spire est enroulée sur l'insert (6), le fil est coupé, l'ampoule tubulaire (1) est tirée sur le mandrin (5) jusqu'à une butée prédéterminée, puis le bout fixé du fil est lâché en déplaçant l'insert (6), et le mandrin (5) est retiré.
EP87110420A 1986-08-06 1987-07-17 Lampe à incandescence et fabrication de son ampoule tubulaire Revoked EP0255638B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87110420T ATE89100T1 (de) 1986-08-06 1987-07-17 Elektrische gluehlampe und herstellung von deren roehrenkolben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU863377A HU195707B (en) 1986-08-06 1986-08-06 Ring for supporting the spiral filament of gas-filled incandescent lamp with tube-like envelope flattened on both ends and method for making the said ring and for putting the said ring into the envelope
HU337786 1987-06-11

Publications (3)

Publication Number Publication Date
EP0255638A2 EP0255638A2 (fr) 1988-02-10
EP0255638A3 EP0255638A3 (en) 1989-11-29
EP0255638B1 true EP0255638B1 (fr) 1993-05-05

Family

ID=10963811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110420A Revoked EP0255638B1 (fr) 1986-08-06 1987-07-17 Lampe à incandescence et fabrication de son ampoule tubulaire

Country Status (5)

Country Link
EP (1) EP0255638B1 (fr)
JP (1) JPS6348741A (fr)
AT (1) ATE89100T1 (fr)
DE (1) DE3785703D1 (fr)
HU (1) HU195707B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3489277B2 (ja) 1995-07-17 2004-01-19 トヨタ自動車株式会社 車両用制動装置
ATE343501T1 (de) 2001-01-10 2006-11-15 Ksr Ind Corp Bremspedalmodul mit variabler übersetzung
US6856078B2 (en) 2001-06-27 2005-02-15 Asm America, Inc. Lamp filament design
US6781291B2 (en) 2001-06-27 2004-08-24 Asm America Inc. Filament support for lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321044A (fr) * 1961-03-23 1963-03-15 Lampes Sa Supports de filament pour lampes à incandescence
US3295007A (en) * 1964-06-25 1966-12-27 Gen Electric Differential output tubular incandescent lamp
US3820207A (en) * 1972-02-04 1974-06-28 Gen Electric Method of manufacturing lamp with filament support structure

Also Published As

Publication number Publication date
HUT44359A (en) 1988-02-29
EP0255638A3 (en) 1989-11-29
JPS6348741A (ja) 1988-03-01
DE3785703D1 (de) 1993-06-09
EP0255638A2 (fr) 1988-02-10
HU195707B (en) 1988-06-28
ATE89100T1 (de) 1993-05-15

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