US3801178A - Method of providing support for conductors of an electric filament or discharge lamp - Google Patents

Method of providing support for conductors of an electric filament or discharge lamp Download PDF

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Publication number
US3801178A
US3801178A US00261068A US3801178DA US3801178A US 3801178 A US3801178 A US 3801178A US 00261068 A US00261068 A US 00261068A US 3801178D A US3801178D A US 3801178DA US 3801178 A US3801178 A US 3801178A
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United States
Prior art keywords
support
lamp
tube
members
places
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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
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US00261068A
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English (en)
Inventor
Den Berge H Van
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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 US3801178A publication Critical patent/US3801178A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/38—Seals for leading-in conductors
    • 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
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/12—Joining of mount or stem to vessel; Joining parts of the vessel, e.g. by butt sealing

Definitions

  • ABSTRACT An electric lamp comprising a support having continuous supporting members and/or current conductors which are secured in a pinch seal.
  • the support which extends at right angles to the axis of the lamp is secured to the side wall of the lamp vessel preferably by a sealing operation.
  • the invention relates to an electric filament lamp or gas discharge tube comprising a tubular lamp vessel which is sealed on at least one end by a pinch seal, in which one or more filaments or electrodes and, possibly, a reflecting screen are secured to current conducting members and/or supporting members secured in the pinch seal, said members being secured, in a place inside the lamp vessel, to a common support which extends in a direction transverse to the longitudinal direction of the lamp.
  • a pinch seal in which one or more filaments or electrodes and, possibly, a reflecting screen are secured to current conducting members and/or supporting members secured in the pinch seal, said members being secured, in a place inside the lamp vessel, to a common support which extends in a direction transverse to the longitudinal direction of the lamp.
  • the common support serves as an insulating member in which the current conductors and the supporting members formed as rather stiff wires are held in their correct places within the lamp vessel. It is conventional to keep said support, which is supported by the said rather stiff wires, at a certain distance from the pinch seal in which the wires are secured.
  • the whole assembly built up on said support has a certain freedom of movement inside the lamp vessel so that the sensitivity of this type of lamps to vibrations is rather considerable.
  • the electric lamp according to the invention is characterized in that the support is connected to the side wall of the lamp vessel in one or more places near or at its circumference and assumes a prescribed position relative to said wall.
  • the support can be fixed in various manners at its circumference relative to the side wall of the lamp vessel.
  • the support is sealed to the side wall of the lamp vessel.
  • a further embodiment of the lamp according to the invention is characterized in that the side wall of the lamp, viewed along its circumference, comprises a few re-entrant parts to which the support is sealed.
  • the support is an elongate member in which continuous conductors or supporting members are secured, said elongate member being secured at its two ends to the side wall of the lamp vessel according to a fixed position.
  • the invention provides another important aspect. By fixing, in the lamp according to the invention, the position of the support in question relative to the side wall of the lamp vessel, the possibility is presented of manufacturing this lamp in a manner differing from the conventional manner.
  • the starting material is a component formed by a beam of quartz glass in which a number of continuous conductors and supports are secured to which the filaments or electrodes are secured.
  • This component is placed in an open tube of quartz glass which comprises an exhaust tube at one end. The widest end of the tube is softened by heating after which said end is deformed to form a pinch seal. Between the beam and the pinch seal there is a part of the lamp space in which the said conductors or supporting members are present.
  • the lamp is then evacuated, filled with a suitable halogen-containing gas and sealed. It is found that in this known method the pinching operation has an adverse influence on the position of the filaments, electrodes or screens arranged carefully in the lamp initially. Actually, this position can easily be changed by performing the pinching operation. Such a changed position can substantially not be corrected afterwards. Consequently the resulting lamp has a poorer optical quality.
  • the said influence is substantially negligible if, prior to the pinching operation, the said support is secured to the side wall of the lamp vessel in the above-described manner. Once a filament or electrode has been positioned in the desirable manner, its position will not change during the subsequent pinching operation.
  • the resulting method according to the invention which leads to the manufacture of this type of lamps and which can be readily mechanized is characterized in that the support, viewed over the cross-section of the glass tube, is secured to the side wall of the said tube in a few places prior to forming the pinch seal.
  • the support is preferably secured to the side wall by first softening the tube in which the support is arranged in a few places of its circumference and then providing in said places a pressure differential on either side of the tube wall. As a result of this operation, the support is immovably sealed to the wall of the tube in said places.
  • FIGS. 1, 2 and 3 are two longitudinal sectional views and a cross-sectional view of a halogen filament lamp for a vehicle headlight comprising a support sealed to the side wall of the lamp vessel;
  • FIG. 3 is a crosssectional view taken on the line IIIIII of FIG. 1
  • FIG. 1 is a cross-sectional view taken on the line 1-1 of FIG. 3
  • FIG. 2 is a cross-sectional view taken on the line IIII of FIG. 1;
  • FIG. 4 shows another embodiment of a lamp comprising several supports
  • FIGS. 5, 6 and 7 relate to a few stages during the manufacture of this type of lamps.
  • the halogen twin lamp shown in FIGS. 1, 2 and 3 comprises a lamp vessel 1 of quartz glass which is prosecured together and in which a number of current conductors 13, 15 and 17 are sealed. These conductors are secured in normal manner to sealing foils 19, 21 and 23 which themselves are connected to external conductors 25, 27 and 29.
  • the support '7 comprises on its upper side a number of conductor parts between which the filament members 31 and 33 are secured in the manner shown. 35 is a reflecting screen which is welded to the conductor 17 which serves as a support. With the exception of the filaments which are manufactured from tungsten, the remaining structural components are manufactured from molybdenum with a view of the regenerative cycle inside the lamp which is filled with a suitable halogen-containing gas.
  • the support 7 which in this embodiment is formed as a beam (9, 11) of quartz glass, is connected at either end to the side wall of the lamp vessel 1.
  • the connection method chosen in this example is a seal between the support 7 and the side wall of the lamp vessel 1.
  • a filament formed from segments 37, 38, 40, 42, 44 and 46 is stretched in known manner between beam-like supports 39 and 41.
  • the supporting members 43, 45 and 47, 49 and 51 have hook-like parts at either end which engage both about the supports 39 and 41 and the intermediate members present between the segments of the filament.
  • Supporting poles 57 and 59 are secured in the supports 39 and 41 as continuous conductors.
  • the poles 57 and 59 are coupled to external conductors 65 and 67 by means of welded sealing foils 61 and 63; the foils are surrounded by a pinch seal 69.
  • this lamp which is constructed as a halogen filament lamp for projecting purposes
  • the supports 39 and 41 which, viewed in the longitudinal direction of the tubular lamp vessel 71, extend on either side of the composite filament, are each secured at their two ends to the side wall of said lamp vessel.
  • a connection between the support and the side wall of the lamp vessel can be produced in various manners, it is to be preferred to construct this connection again in the form of a seal between the support 39 and the side wall of the lamp vessel 71 which are both manufactured from quartz glass.
  • FIGS. 5, 6 and 7 show how the filament lamps described can be manufactured.
  • FIG. shows a part of a holder construction which comprises a member in the form of tongs having jaws 75 and 77 between which an assembly, constituted by conductors 25, 27, 29, foils 19, 21 and 23, conductors 13, l5, 17, support 7 consisting of parts 9 and 11, filament members 31, 33 and screen 35, is clamped in the manner shown.
  • a tubular glass member 79 is placed which bears on the abutment 83 and which is shown in broken lines in FIG. 5. This tubular member is held by the jaws 86 and 88 of a member in the form of tongs not shown in detail.
  • This tubular member 79 comprises a narrowed portion 81 in the form of an exhaust tube and engages with its wider lower end on the abutment 83.
  • the side wall of the tubular member 79 is softened by means of a few pointed flames 85 and 87 of a very high temperature after the space inside the tubular member has been connected to a line 89 in which a negative pressure prevails.
  • the tube wall 79 will be deformed at the heated places in such manner that a reentrant partis formed at the said places and the tube wall is sealed to the support 7.
  • the re-entrant parts are denoted by 101 and 103.
  • the jaws and 77 are then opened and removed from the tubular member.
  • a pinch seal is then to be formed as the widest open end of the tubular member 79.
  • the assembly consisting of tubular member 79 with the foils 19, 21, 23 and conductors 25, 27, 29 freely suspending from said support 7, is held between the jaws 86 and 88 (FIG. 7) and is subjected to a further thermal treatment.
  • the open tube end is softened by heating by means of burner flames directed in the direction of the arrows 109 and 111.
  • the end of said tubular member 79 is deformed to a pinch so that the assembly takes the shape as is shown in FIG. 1.
  • the lamp vessel is then evacuated through the exhaust tube 81, filled with a suitable halogen-containing gas, and the exhaust tube 81 is sealed by a sealing operation, the sealed exhaust tube obtaining the shape as is shown in FIG. 1 (5).
  • a beam-shaped support 7 was always used. It will be obvious that other forms of supports may also be considered when using the invention.
  • the support 7 may be in the form of a disc which is secured to the side wall at least in three places of its circumference.
  • a method of manufacturing an electric lamp of the type having a tubular vessel sealed on at least one end by a pinch seal comprising the steps of arranging an assembly constituting elongated lamp members being passed through a support in a predetermined position within an open tube of glass, said members having at least one light emitting element secured thereto and assuming an aligned position relative to the support, said support being formed as a beam; securing the support to the side wall of said tube at either end of the beam in at least two places; subsequent to securing the support, softening the tube by heating at one end to form a pinch seal at a predetermined position relative to said support; evacuating the resultant lamp vessel after said pinch seal is formed; providing said evacuated vessel with an appropriate gas; and sealing the other end of said tube.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US00261068A 1970-04-07 1972-06-08 Method of providing support for conductors of an electric filament or discharge lamp Expired - Lifetime US3801178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7004939A NL7004939A (fr) 1970-04-07 1970-04-07

Publications (1)

Publication Number Publication Date
US3801178A true US3801178A (en) 1974-04-02

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ID=19809781

Family Applications (1)

Application Number Title Priority Date Filing Date
US00261068A Expired - Lifetime US3801178A (en) 1970-04-07 1972-06-08 Method of providing support for conductors of an electric filament or discharge lamp

Country Status (7)

Country Link
US (1) US3801178A (fr)
BE (1) BE765394A (fr)
CA (1) CA957007A (fr)
DE (1) DE2113031A1 (fr)
FR (1) FR2089330A5 (fr)
GB (1) GB1286048A (fr)
NL (1) NL7004939A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166232A (en) * 1978-03-13 1979-08-28 Gte Sylvania Incorporated Filament lead-in support for tungsten halogen capsule for headlight
FR2490400A1 (fr) * 1980-09-13 1982-03-19 Philips Nv Lampe electrique a incandescence a filament tendu transversalement a l'axe de l'ampoule
EP0812004A2 (fr) * 1996-06-04 1997-12-10 Honda Giken Kogyo Kabushiki Kaisha Ampoule de lampe pour véhicule
EP1447837A2 (fr) * 2003-02-13 2004-08-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence pour phare de véhicule
WO2008025374A1 (fr) * 2006-08-29 2008-03-06 Osram Gesellschaft mit beschränkter Haftung Lampe à incandescence et procédé de fabrication
WO2010151709A1 (fr) * 2009-06-24 2010-12-29 Cunningham David W Système d'éclairage incandescent qui intègre un protecteur de contact réfléchissant dans l'infrarouge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1391704A (en) * 1972-04-14 1975-04-23 Thorn Electrical Ind Ltd Lamp pinch seals
US5209689A (en) * 1991-12-27 1993-05-11 Gte Products Corporation Methods for mounting filaments in tubular incandescent lamp capsules

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2412800A (en) * 1943-08-05 1946-12-17 Rca Corp Electron discharge device
US2572055A (en) * 1949-01-26 1951-10-23 Sonotone Corp Electron space discharge device
GB685800A (en) * 1949-11-12 1953-01-14 Tesla Nat Corp Improvements in and relating to electron tubes
GB737300A (en) * 1952-07-30 1955-09-21 Philips Electrical Ind Ltd Improvements in electric discharge tubes
US3209188A (en) * 1961-02-21 1965-09-28 Westinghouse Electric Corp Iodine-containing electric incandescent lamp with heat conserving envelope
US3384781A (en) * 1966-10-31 1968-05-21 Gen Electric Self-contained battery-powered electric incandescent lamp
US3548244A (en) * 1968-07-01 1970-12-15 British Lighting Ind Ltd Lamp having twin filaments and integral filament legs mounted in a bridge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2412800A (en) * 1943-08-05 1946-12-17 Rca Corp Electron discharge device
US2572055A (en) * 1949-01-26 1951-10-23 Sonotone Corp Electron space discharge device
GB685800A (en) * 1949-11-12 1953-01-14 Tesla Nat Corp Improvements in and relating to electron tubes
GB737300A (en) * 1952-07-30 1955-09-21 Philips Electrical Ind Ltd Improvements in electric discharge tubes
US3209188A (en) * 1961-02-21 1965-09-28 Westinghouse Electric Corp Iodine-containing electric incandescent lamp with heat conserving envelope
US3384781A (en) * 1966-10-31 1968-05-21 Gen Electric Self-contained battery-powered electric incandescent lamp
US3548244A (en) * 1968-07-01 1970-12-15 British Lighting Ind Ltd Lamp having twin filaments and integral filament legs mounted in a bridge

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166232A (en) * 1978-03-13 1979-08-28 Gte Sylvania Incorporated Filament lead-in support for tungsten halogen capsule for headlight
DE2909259A1 (de) * 1978-03-13 1979-09-27 Gte Sylvania Inc Wolfram-halogen-lampe fuer einen monoblock-scheinwerfer sowie methode zu ihrer herstellung
FR2490400A1 (fr) * 1980-09-13 1982-03-19 Philips Nv Lampe electrique a incandescence a filament tendu transversalement a l'axe de l'ampoule
EP0812004A2 (fr) * 1996-06-04 1997-12-10 Honda Giken Kogyo Kabushiki Kaisha Ampoule de lampe pour véhicule
EP0812004A3 (fr) * 1996-06-04 1998-02-25 Honda Giken Kogyo Kabushiki Kaisha Ampoule de lampe pour véhicule
US5850124A (en) * 1996-06-04 1998-12-15 Honda Giken Kogyo Kabushiki Kaisha Automobile lamp bulb with welded low beam shield
EP1447837A3 (fr) * 2003-02-13 2008-01-09 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence pour phare de véhicule
US20040160181A1 (en) * 2003-02-13 2004-08-19 Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh Incandescent lamp for vehicle headlights
EP1447837A2 (fr) * 2003-02-13 2004-08-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence pour phare de véhicule
WO2008025374A1 (fr) * 2006-08-29 2008-03-06 Osram Gesellschaft mit beschränkter Haftung Lampe à incandescence et procédé de fabrication
US20100001627A1 (en) * 2006-08-29 2010-01-07 Osram Gesellschaft Mit Beschrankter Haftung Incandescent Bulb and Method for the Production Thereof
CN101506936B (zh) * 2006-08-29 2011-04-06 奥斯兰姆有限公司 白炽灯及其制造方法
WO2010151709A1 (fr) * 2009-06-24 2010-12-29 Cunningham David W Système d'éclairage incandescent qui intègre un protecteur de contact réfléchissant dans l'infrarouge
US20100327724A1 (en) * 2009-06-24 2010-12-30 Cunningham David W Incandescent lamp incorporating reflective filament supports and method for making it
US20100328955A1 (en) * 2009-06-24 2010-12-30 Cunningham David W Incandescent illumination system incorporating an infrared-reflective shroud
WO2010151708A3 (fr) * 2009-06-24 2011-03-17 Cunningham David W Lampe à incandescence incorporant des supports de filament réflecteur, et procédé de réalisation
US8253309B2 (en) 2009-06-24 2012-08-28 Cunningham David W Incandescent lamp incorporating reflective filament supports and method for making it
US8267547B2 (en) 2009-06-24 2012-09-18 Cunningham David W Incandescent illumination system incorporating an infrared-reflective shroud

Also Published As

Publication number Publication date
FR2089330A5 (fr) 1972-01-07
BE765394A (fr) 1971-10-06
CA957007A (en) 1974-10-29
GB1286048A (en) 1972-08-16
DE2113031A1 (de) 1971-10-21
NL7004939A (fr) 1971-10-11

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