US3743375A - Halogen filament lamp - Google Patents

Halogen filament lamp Download PDF

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Publication number
US3743375A
US3743375A US00126552A US3743375DA US3743375A US 3743375 A US3743375 A US 3743375A US 00126552 A US00126552 A US 00126552A US 3743375D A US3743375D A US 3743375DA US 3743375 A US3743375 A US 3743375A
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US
United States
Prior art keywords
filament
lamp
foils
wire
chain
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
US00126552A
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English (en)
Inventor
Fraeye D De
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US Philips Corp
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US Philips Corp
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Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3743375A publication Critical patent/US3743375A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • 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 a method of manufacturing a tubular halogen filament lamp which comprises a tubular lamp vessel closed by at least one pinch seal, in the longitudinal direction of which vessel is arranged a filament which is connected to at least one lead-in member incorporated in the pinch seal, said filament being supported in at least one place by a part of a supporting wire likewise extending in the longitudinal direction of the lamp and embedded in the pinch seal.
  • a tubular halogen filament lamp which comprises a tubular lamp vessel closed by at least one pinch seal, in the longitudinal direction of which vessel is arranged a filament which is connected to at least one lead-in member incorporated in the pinch seal, said filament being supported in at least one place by a part of a supporting wire likewise extending in the longitudinal direction of the lamp and embedded in the pinch seal.
  • the method according to the invention is characteri zed in that the starting material is an assembly formed by the filament having secured thereto lead-in members and a wire supporting said filament in at least one place, a part of said wire being formed by a metal member which is meltable only during the pinching operation, said assembly being surrounded by a glass tubular member, the pinch seal being formed in said tubular member while embedding the lead-in members and the meltable metal members, the resulting lamp vessel being then provided with a suitable gas filling and being sealed.
  • the starting material is an assembly formed by the filament having secured thereto lead-in members and a wire supporting said filament in at least one place, a part of said wire being formed by a metal member which is meltable only during the pinching operation, said assembly being surrounded by a glass tubular member, the pinch seal being formed in said tubular member while embedding the lead-in members and the meltable metal members, the resulting lamp vessel being then provided with a suitable gas filling and being sealed.
  • a meltable metal member which is in the form of a tube in the two ends of which spaced parts of the supporting wire are secured. It has been found that this construction in which the tube is preferably manufactured from nickel, is to be preferred over a solid rod as a metal member.
  • the invention is particularly suitable for use in a method of manufacturing a tubular halogen filament lamp which comprises a tubular lamp vessel sealed at either end by a pinch seal, in the longitudinal direction of which a filament is arranged which is connected to foils embedded in the pinch seals, which foils are each connected to a lead-in conductor emerging from the lamp, said filament being supported in at least one place by a supporting wire likewise extending in the longitudinal direction of the lamp, said wire being likewise embedded at either end in the two pinch seals.
  • the starting material consists of two parallel chains, one of which is formed by the filament having foils connected thereto, to which foils are connected lead-in conductors, and the other is formed by a wire supporting the filament in at least one place and a part of which, which is present approximately at the height of each foil, is formed by a metal member which is not meltable until during the pinching operation, said two chains being surrounded by a tubular glass member which is shorter than the length of each chain, pinch seals being formed at either end of said tubular member while embedding the foils and the meltable metal members, the resulting lamp vessel then being evacuated through a lateral exhaust tube, provided with a suitable gas filling, after which said exhaust tube is sealed. So for the manufacture of the lamp two parallel chains are used which can be held collectively in a particularly simple manner during the pinching operation.
  • the two chains may be united by bridge members to form a single coherent assembly.
  • the resulting chain may then be closed entirely by using two bridge members.
  • the handling during the pinching operation becomes particularly simple. In that case it is sufficient for the composite chain to be held by its two bridge members, the chain maintaining its coherence substantially up to the instant at which the squeezing members have completed their action.
  • a separation operation may be carried out on the bridge member formed outside the pinch seal, which bridge member is secured in said pinch seal at either end. In that case the bridge member serves as a lead in conductor which is secured to the filament member via a sealing foil.
  • FIG. 1 shows a two-pinch halogen filament lamp to be manufactured.
  • FIG. 2 relates to a method according to the invention
  • FIG. 3 shows on an enlarged scale a part of the supporting wire shown in FIG. 2,
  • FIG. 4 shows a filament lamp obtained by the method according to the invention.
  • FIG. 5 shows a mono-pinch halogen filament lamp.
  • FIG. 1 shows an electric filament lamp which comprises a tubular lamp vessel 1 of quartz glass. At its end said lamp vessel comprisespinch seals 3 and 5. A coiled coil filament 7 of tungsten wire is arranged inside the lamp. The ends of the filament 7 are secured to sealing foils 9 and ll of molybdenum. External conductors l3 and 15 are secured to said foils.
  • the filament 7 is supported in known manner by a loop 17 formed in a supporting wire 19 of molybdenum and extending parallel to the filament 7, and the ends of which are embedded in the pinch seals 3 and 5.
  • the filament lamp shown is provided with a suitable halogen-containing gas filling in a manner conventionally used for halogen filament lamps.
  • starting material for the manufacture of a filament lamp shown in FIG. 1 is an assembly as shown in FIG. 2.
  • This assembly comprises the components already described with reference to FIG. 1, which are arranged as two parallel chains inside a tubular member 23 of quartz glass which is open at either end, in the manner as shown in FIG. 2.
  • said tubular member is shown in broken lines.
  • the first chain comprises the filament 7, foils 9 and 11, and external conductors 13 and 15.
  • the second chain is constituted by the supporting wire 19, metal member 25 and 27 secured thereto, and supporting wires 29 and 31 which are secured thereto and have the same thickness as the wire 19 and likewise consist of molybdenum.
  • the metal members 25 and 27 are chosen to consist of such a material that they melt only when the operation of the squeezing members to form the pinch seals 3 and is carried out. These members are manufactured, for example, from nickel and are in the form of tubes. FIG. 3 shows the tube 27 on an enlarged scale. The ends of supporting wires 19 and 31 are secured in said tube 27.
  • the assembly comprising the two chains are held by suitably constructed holders 33 and 35 shown in broken lines.
  • the conductors l3 and 15 and the supporting wires 29 and 31 are held in a prescribed position.
  • the loop-shaped part 17 of the supporting wire 19 can continue to support the filament 7 during the performance of the pinching operations.
  • the ends of the tubular member 23 which are softened by heating are squeezed between two squeezing blocks not to be described in detail. Just before the quartz glass contacts the members 25 and 27, the members 25 and 27 will melt during which time the position of the supporting wire 19 does not vary to any substantial degree.
  • This lamp vessel is then evacuated, provided with a suitable gas filling, and the exhaust tube 21 is sealed.
  • FIG. 4 The resulting product is shown in FIG. 4.
  • the melted metal members 25 and 27 form insulated embedded masses 37 and 39, respectively.
  • they Viewed from the supporting wire 19, they are embedded in the elongation of the ends of the wire in the pinch seals 3 and 5 in an electrically insulted manner between the wire parts 19 and 29 and 19 and 31, respectively.
  • the starting material was constituted by two separate parallel chains. It will be obvious that it is also possible to use a single closed chain having two parallel branches connected by bridge members 41 and 43 as they are shown in broken lines in FIG. 4. Such a closed chain has the advantage of forming a rigid cohering assembly up to the formation of the pinch seals. In that case, the extra bridge members 41 and 43 may be formed by bending back the parts 29 and 31 of the supporting wires and connecting them to the foils 9 and 11. The parts of the wire present outside the pinch seals 3 and 5 are then each incorporated with their two ends in the pinch seals in an insulated manner and may serve as external connection members. If desirable, a separation operation may be carried out along the broken lines 45 and 47.
  • FIG. 5 illustrates the resultant pinch after the melting has occurred. Again the presence of an embedded mass 55 is to be noted.
  • a method of manufacturing a tubular halogen filament lamp of the type having a tubular lamp vessel sealed by at least one pinch seal, said vessel having a longitudinal filament connected to at least one lead-in member which is incorporated in the pinch seal, the filament being supported in at least one place by a supporting wire which wire is embedded in the pinch seal and extending longitudinally in the lamp comprising the steps of:
  • an elongated filament having at least one lead-in member attached thereto and a supporting wire, said supporting wire positioned to be substantially parallel to the longitudinal axis of the tube and supporting the filament in at least one place, said wire having a portion including a member meltable during the pinching operation;
  • a first chain of elements including a filament, foils secured to either end of said filament, and lead-in conductors secured to said foils;
  • pinch seals at either end of said tubular member, thereby embedding the foils and melting and embedding the meltable members in said pinch seals;
  • the starting material is a supporting wire of which at least one of the ends is bent back and secured to one of the foils
  • a separation operation may be carried out on the bent'part of the supporting wire extending from the lamp vessel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US00126552A 1970-04-04 1971-03-22 Halogen filament lamp Expired - Lifetime US3743375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7004872A NL7004872A (fr) 1970-04-04 1970-04-04

Publications (1)

Publication Number Publication Date
US3743375A true US3743375A (en) 1973-07-03

Family

ID=19809760

Family Applications (1)

Application Number Title Priority Date Filing Date
US00126552A Expired - Lifetime US3743375A (en) 1970-04-04 1971-03-22 Halogen filament lamp

Country Status (6)

Country Link
US (1) US3743375A (fr)
BE (1) BE765246A (fr)
DE (1) DE2111692A1 (fr)
FR (1) FR2094952A5 (fr)
GB (1) GB1334453A (fr)
NL (1) NL7004872A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850489A (en) * 1973-12-14 1974-11-26 Gen Electric Method of manufacture of an incandescent lamp
US3891885A (en) * 1973-02-07 1975-06-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogen incandescent lamp
US4066926A (en) * 1976-10-12 1978-01-03 Westinghouse Electric Corporation Gas-filled incandescent lamp with integral fuse assembly
US4178050A (en) * 1976-01-16 1979-12-11 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Manufacture of halogen cycle incandescent lamps
EP0271858A2 (fr) * 1986-12-16 1988-06-22 Gte Products Corporation Ampoule à halogène en verre dur pour haute tension
WO2004057646A2 (fr) * 2002-12-20 2004-07-08 Koninklijke Philips Electronics N.V. Lampe a incandescence halogene
US20100133981A1 (en) * 2008-12-02 2010-06-03 Ceferino Garcia Lamp for rapid temperature processing
US20100213028A1 (en) * 2009-02-26 2010-08-26 Kazuo Itoh Transfer device and conveyor equipped with the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408719A (en) * 1965-11-08 1968-11-05 Gen Electric Method of assembling lamp filament and support structure
US3600053A (en) * 1969-02-13 1971-08-17 Thorn Lighting Ltd Single-ended filament lamps

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408719A (en) * 1965-11-08 1968-11-05 Gen Electric Method of assembling lamp filament and support structure
US3600053A (en) * 1969-02-13 1971-08-17 Thorn Lighting Ltd Single-ended filament lamps

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891885A (en) * 1973-02-07 1975-06-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogen incandescent lamp
US3850489A (en) * 1973-12-14 1974-11-26 Gen Electric Method of manufacture of an incandescent lamp
US4178050A (en) * 1976-01-16 1979-12-11 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Manufacture of halogen cycle incandescent lamps
US4066926A (en) * 1976-10-12 1978-01-03 Westinghouse Electric Corporation Gas-filled incandescent lamp with integral fuse assembly
EP0271858A2 (fr) * 1986-12-16 1988-06-22 Gte Products Corporation Ampoule à halogène en verre dur pour haute tension
EP0271858A3 (fr) * 1986-12-16 1990-05-16 Gte Products Corporation Ampoule à halogène en verre dur pour haute tension
WO2004057646A2 (fr) * 2002-12-20 2004-07-08 Koninklijke Philips Electronics N.V. Lampe a incandescence halogene
WO2004057646A3 (fr) * 2002-12-20 2004-09-02 Koninkl Philips Electronics Nv Lampe a incandescence halogene
US20070138929A1 (en) * 2002-12-20 2007-06-21 Koninklijke Philips Electronics N.V. Halogen incandescent lamp
US7391146B2 (en) 2002-12-20 2008-06-24 Koninklijke Philips Electronics N.V. Halogen incandescent lamp
US20100133981A1 (en) * 2008-12-02 2010-06-03 Ceferino Garcia Lamp for rapid temperature processing
US7932665B2 (en) * 2008-12-02 2011-04-26 Osram Sylvania Inc. Dual filament lamp for rapid temperature processing
US20100213028A1 (en) * 2009-02-26 2010-08-26 Kazuo Itoh Transfer device and conveyor equipped with the same
US8272496B2 (en) * 2009-02-26 2012-09-25 Itoh Denki Co., Ltd. Transfer device and conveyor equipped with the same

Also Published As

Publication number Publication date
FR2094952A5 (fr) 1972-02-04
GB1334453A (en) 1973-10-17
DE2111692A1 (de) 1971-10-21
NL7004872A (fr) 1971-10-06
BE765246A (fr) 1971-10-04

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