EP0057006B1 - Lampe électrique à incandescence - Google Patents

Lampe électrique à incandescence Download PDF

Info

Publication number
EP0057006B1
EP0057006B1 EP82100492A EP82100492A EP0057006B1 EP 0057006 B1 EP0057006 B1 EP 0057006B1 EP 82100492 A EP82100492 A EP 82100492A EP 82100492 A EP82100492 A EP 82100492A EP 0057006 B1 EP0057006 B1 EP 0057006B1
Authority
EP
European Patent Office
Prior art keywords
base
openings
lamp
incandescent lamp
contacts
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
Application number
EP82100492A
Other languages
German (de)
English (en)
Other versions
EP0057006A3 (en
EP0057006A2 (fr
Inventor
Hermann Ing. Grad. Steiner
Otto Püll
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 EP0057006A2 publication Critical patent/EP0057006A2/fr
Publication of EP0057006A3 publication Critical patent/EP0057006A3/de
Application granted granted Critical
Publication of EP0057006B1 publication Critical patent/EP0057006B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
    • 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
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/62—Connection of wires protruding from the vessel to connectors carried by the separate part

Definitions

  • the invention relates to an electric incandescent lamp and a method for its production.
  • the current leads of this lamp are guided through funnel-shaped bores in the base insulation and through openings of base contacts provided with a raised edge and welded to the base contacts with their openings tightly sealed.
  • nickel wires are first welded to the molybdenum power supply lines, for example a two-filament halogen incandescent lamp, which are passed through funnel-shaped bores in the base insulation and through the openings in base contacts and then soldered to the base contacts made of nickel-plated brass. The solder is used to close the socket contact openings.
  • molybdenum power supply lines for example a two-filament halogen incandescent lamp
  • This raised edge is shaped so that the distance between the outer periphery of the power supply and the inner periphery of the edge of the socket contact opening is not too large, but also not too small. If the distance were too large, the molten material of the power supply could fall through the base contact opening into the interior of the lamp base without connecting to the raised edge and lead to an incorrect mechanical or electrical connection inside the base. In the event that the above If the distance were too small, the raised edge would not only be melted slightly as desired to just connect to the melt of the power supply, but so strongly that it decomposes thermally and gasses, with the gas formed in the metal cam the solidified melt of the power supply is enclosed and thus does not ensure good electrical contact between the power supply and the base contact.
  • the invention has for its object to provide an electric incandescent lamp and a method for its production, the power supplies of the lamp are connected to the base contacts by closing the base contact openings so that the closure of the base contact opening does not evaporate during operation of the lamp and that it also it is not necessary to design the raised edge of the socket contact opening as specifically as is described in US Pat. No. 3,897,124.
  • the closure of the socket contact openings is formed by molten socket contact material.
  • the raised edge of the openings is melted down as the lamp power leads are welded to the base contacts. This makes it possible to easily produce the raised edge.
  • a pre-punched hole is widened in the base contacts, as a result of which a collar, the raised edge, is produced. This edge must contain so much material that, when molten, it closes the socket contact opening completely tightly when the power supply is inserted. Therefore, the diameter of the pre-punched hole is proportional to the diameter of the power supply to the lamp.
  • the tight closure of the base contact openings serves to ensure that no moisture penetrates through the lamp base into the reflector space, for example of a motor vehicle headlight, and destroys the mirror.
  • base contacts made of a material which combine with molybdenum during welding.
  • the base contacts preferably consist of chromium-containing or other corrosion-resistant steel or of a nickel alloy. These materials can be easily combined with each other by tungsten inert gas welding with argon as protective gas with a process time of ⁇ 0.5 sec. This results in a tight seal on the base contact openings, which is temperature and corrosion resistant, also against stress corrosion, since the materials used in the voltage series lie close together.
  • the welded connection gives a very good hold, so that the vibration between the base contact and the lamp power supply does not come loose when there is vibration, for example when driving a car.
  • FIGS. 1 a - 1 d show one of three identical base contacts 1 of a two-filament halogen incandescent lamp.
  • this base contact 1 consists of an L-shaped metal sheet made of chromium-containing steel. However, a sheet made of other corrosion-resistant steel or a nickel alloy can also be used.
  • a dovetail-like tab 3 is punched out laterally and bent at right angles to the shorter leg 2, so that these tabs 3, offset in parallel, form a continuation of the longer leg 4 of the base contact 1.
  • An opening 5 is provided in the center of the shorter leg 2 and is surrounded by a raised edge 6 on the side opposite the tabs 3.
  • the opening 5 is concentrically surrounded on the side facing away from the tabs 3 by a pronounced annular bead 7.
  • FIGs 2a and 2b show the base 8 of the two-filament halogen lamp, which consists of a base sleeve 9, three base contacts 1 and a base insulation 10 made of molding compound.
  • the base sleeve 9 is embedded with its lower end and the base contacts 1 with the tabs 3 and the shorter leg 2 in the base insulation 10.
  • a funnel-shaped bore 11 is cut out in alignment with the openings 5 of the base contacts 1.
  • the punches which produce these funnel-shaped bores 11 additionally have mandrels at their tips, which pass through the openings 5 in the base contacts 1 when the base insulation 10 is pressed and thus keep the openings 5 free of base insulation material.
  • the annular beads 7 arranged concentrically with the openings 5 are also provided.
  • the power supply lines 12 (only partially shown) of the two-filament halogen lamp are inserted so that they are slightly above the raised edge 6 of the base contact openings 5 stick out.
  • the base contacts 1 are connected to ground and tungsten electrodes are arranged about 1 mm above the respective welding point, the raised edge 6.
  • Argon serves as a protective gas.
  • the respective raised edge 6 of each base contact 1 is melted down completely and the power supply lines of the lamp are only slightly melted, so that the melt from the base contact material can just connect to the respective power supply line.
  • FIG. 3 shows an enlarged section of the base 8 of the lamp, but with welded-on power supply lines 12.
  • the base contact opening 5 shown is completely sealed by the base contact material after the welding process; A small cam 13 is created above the original opening 5.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Claims (4)

1. Lampe électrique à incandescence, dont les conducteurs (12) d'alimentation en courant franchissent des trous (11) en forme d'entonnoir dans l'isolation (10) du culot ainsi que des orifices (5) de contacts (1) du culot munis d'un bord relevé (6), et sont ensuite soudés aux contacts (1) du culot avec obturation hermétique de leurs orifices (5), caractérisée par le fait que les conducteurs d'alimentation (12) de la lampe consistent en du molybdène et l'obturation des orifices (5) des contacts du culot est formée par du matériau fondu constituant les contacts du culot.
2. Lampe électrique à incandescence selon la revendication 1, caractérisée par le fait que les contacts (1) du culot consistent en de l'acier au chrome ou en un autre acier résistant à la corrosion, ou bien en un alliage de nickel.
3. Lampe électrique à incandescence selon la revendication 1 ou 2, caractérisée par le fait que, du côté opposé à l'isolation (10) du culot, les orifices (5) des contacts du culot sont entourés à chaque fois par un bourrelet annulaire estampé (7).
4. Procédé de fabrication d'une lampe électrique à incandescence selon la revendication 1, caractérisé par le fait que le bord relevé (6) des orifices (5) dans les contacts (1) du culot est solidarisé par fusion et par rabat avec les contacts (t) du culot, au cours du soudage des conducteurs (12) d'alimentation en courant de la lampe.
EP82100492A 1981-01-26 1982-01-25 Lampe électrique à incandescence Expired EP0057006B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3102434 1981-01-26
DE19813102434 DE3102434A1 (de) 1981-01-26 1981-01-26 Elektrische gluehlampe

Publications (3)

Publication Number Publication Date
EP0057006A2 EP0057006A2 (fr) 1982-08-04
EP0057006A3 EP0057006A3 (en) 1983-01-19
EP0057006B1 true EP0057006B1 (fr) 1986-04-09

Family

ID=6123333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100492A Expired EP0057006B1 (fr) 1981-01-26 1982-01-25 Lampe électrique à incandescence

Country Status (3)

Country Link
EP (1) EP0057006B1 (fr)
JP (1) JPS57143260A (fr)
DE (2) DE3102434A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8907108U1 (fr) * 1989-06-09 1989-08-10 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
US5039905A (en) * 1989-07-04 1991-08-13 U.S. Philips Corporation Welding connection for an electric lamp
US5272409A (en) * 1991-06-03 1993-12-21 U.S. Philips Corporation Capped lamp/reflector unit
JP3324564B2 (ja) * 1999-05-25 2002-09-17 松下電器産業株式会社 管球の製造方法
DE102006060027A1 (de) * 2006-12-19 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961633A (en) * 1954-12-28 1960-11-22 Gen Electric Contact pin for fluorescent lamps
US3897124A (en) * 1973-11-14 1975-07-29 Gen Electric Lamp base assembly

Also Published As

Publication number Publication date
JPS57143260A (en) 1982-09-04
EP0057006A3 (en) 1983-01-19
DE3270341D1 (en) 1986-05-15
EP0057006A2 (fr) 1982-08-04
DE3102434A1 (de) 1982-08-26

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