EP0756313A2 - Electric incandescent lamp - Google Patents

Electric incandescent lamp Download PDF

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Publication number
EP0756313A2
EP0756313A2 EP96111048A EP96111048A EP0756313A2 EP 0756313 A2 EP0756313 A2 EP 0756313A2 EP 96111048 A EP96111048 A EP 96111048A EP 96111048 A EP96111048 A EP 96111048A EP 0756313 A2 EP0756313 A2 EP 0756313A2
Authority
EP
European Patent Office
Prior art keywords
hook
shaped
filament
holder
free end
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.)
Granted
Application number
EP96111048A
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German (de)
French (fr)
Other versions
EP0756313B1 (en
EP0756313A3 (en
Inventor
Hermann Gmeiner
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 EP0756313A2 publication Critical patent/EP0756313A2/en
Publication of EP0756313A3 publication Critical patent/EP0756313A3/en
Application granted granted Critical
Publication of EP0756313B1 publication Critical patent/EP0756313B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to an electric light bulb according to the preamble of patent claim 1.
  • Such a lamp is disclosed for example in German utility model G 74 08 624.
  • This lamp is a halogen incandescent lamp with an M-shaped filament that is held with the help of a frame.
  • the frame has two hook-shaped holders fixed in a quartz beam, into which the filament with its non-luminous filament sections is suspended.
  • a disadvantage of this lamp is that the filament holder is inadequately secured against unhooking of the filament when the lamp is shaken.
  • the frame for holding the filament has at least one hook-shaped holder with a free end, into which the filament is suspended.
  • the free end of the hook-shaped holder is angled in such a way that it narrows the hook-in opening of the hook-shaped holder and thus prevents the filament from being detached.
  • the at least one hook-shaped holder is advantageously equipped with a U-shaped section into which the filament is hung.
  • the angled free end of the hook-shaped holder is formed on a first leg of this U-shaped section and extends in the direction of the second U-leg, so that the distance between the angled free end of the holder and the second U-shaped leg is smaller than that The distance between the two U-shaped legs is.
  • This filament holder is particularly advantageous in the case of incandescent lamps with bridge filaments which have a plurality of light-emitting and non-light-emitting filament sections.
  • the figure shows a not to scale, highly schematic representation of a halogen incandescent lamp operated at mains voltage with a power consumption of approximately 650 W in accordance with the preferred exemplary embodiment.
  • the halogen incandescent lamp has a lamp bulb 1 squeezed on one side.
  • Two molybdenum foils 2 are melted in a gas-tight manner in the pinch base 1b of the lamp.
  • Two power leads 3 also protrude from the squeezing foot 1b and are each welded to one of the molybdenum foils 2.
  • Within the lamp bulb 1 there is a frame for holding an essentially U-shaped bridge filament 4, which has three light-emitting filament sections 4a.
  • the frame consists of a quartz glass beam 5, two current-carrying wires 6 and two hook-shaped holders 7.
  • the current-carrying wires 6 are each attached to one end of the bridge helix 4 and welded to a molybdenum foil 2, so that an electrically conductive connection between the current leads 3 and the Bridge spiral 4 exists.
  • the ends of the bridge coil 4 and the current-carrying Wires 6 are also melted into the quartz glass beam 5.
  • One end of the hook-shaped holder 7 is fixed in the quartz beam holder 5.
  • the other end of the hook-shaped holder 7 each has a U-shaped section, in which the bridge coil 4 is suspended with the aid of two wire loops 8.
  • the wire loops 8 are fastened to the bridge coil 4 in the region of the two non-light-emitting coil sections which separate the light-emitting coil sections 4a from one another.
  • the two hook-shaped holders 7 each have an angled free end 7a which is bent approximately at right angles from a first leg 7b of the corresponding U-shaped holder section.
  • the angled free ends 7a each extend in the direction of the second leg 7c of the corresponding U-shaped holder section and thereby narrow the hook-in opening of the hook-shaped holder 7.
  • the hook-in opening is, without angled end 7a, due to the distance between the two legs 7b, 7c of the U -shaped holder section defines and is here about 1.8 mm.
  • the effective suspension opening is narrowed to approximately 1 mm. This corresponds to the distance between the angled free end 7a and the end of the second leg 7c of the U-shaped holder section.
  • the length of the angled free ends 7a is approximately 2.5 mm.
  • the hook-shaped holder 7 consist of molybdenum wire and the wire loops 8 are made of tungsten.
  • the wire loops 8 have a wire thickness of approximately 0.4 mm.

Landscapes

  • Resistance Heating (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Catching Or Destruction (AREA)

Abstract

The lamp has a frame for supporting the lamp filament (4) having at least one hooked holder (7) from which the lamp filament is suspended. The free end (7a) of the hooked holder is bent to provide a narrowed insertion opening for the lamp filament. Pref. the lamp filament is suspended from a U-shaped section of the hooked holder, with the free end provided at the end of one arm of the U-shaped section and bent at right angles to the arm for restricting the distance between the arms.

Description

Die Erfindung betrifft eine elektrische Glühlampe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an electric light bulb according to the preamble of patent claim 1.

Eine derartige Lampe ist beispielsweise in dem deutschen Gebrauchsmuster G 74 08 624 offenbart. Bei dieser Lampe handelt es sich um eine Halogenglühlampe mit einer M-förmigen Glühwendel, die mit Hilfe eines Gestells gehaltert wird. Das Gestell besitzt zwei in einem Quarzbalken fixierte hakenförmige Halter, in die die Glühwendel mit ihren nicht-leuchtenden Wendelabschnitten eingehängt ist. Ein Nachteil dieser Lampe besteht darin, daß die Wendelhalterung bei Erschütterungen der Lampe unzulänglich gegen ein Aushängen der Glühwendel gesichert ist.Such a lamp is disclosed for example in German utility model G 74 08 624. This lamp is a halogen incandescent lamp with an M-shaped filament that is held with the help of a frame. The frame has two hook-shaped holders fixed in a quartz beam, into which the filament with its non-luminous filament sections is suspended. A disadvantage of this lamp is that the filament holder is inadequately secured against unhooking of the filament when the lamp is shaken.

Es ist die Aufgabe der Erfindung, eine elektrische Glühlampe mit einer verbesserten Wendelhalterung bereitzustellen, die, insbesondere bei mit Brückenwendeln ausgestatteten Glühlampen, eine ausreichende Sicherheit gegen ein Aushängen der Wendel bietet und die außerdem kostengünstig herstellbar ist.It is the object of the invention to provide an electric incandescent lamp with an improved filament holder which, in particular in the case of incandescent lamps equipped with bridge filaments, offers sufficient security against the filament being detached and which is also inexpensive to produce.

Zunächst wurde versucht die obengenannte Aufgabe dadurch zu lösen, daß die Einhängeöffnung durch Zusammenbiegen des hakenförmigen Halterabschnitts verengt wurde. Zwar verringerte die vorgenannte Maßnahme die Gefahr des Wendelaushängens, allerdings verursachte das Zusammenbiegen des hakenförmigen Halterabschnitts einen erhöhten Ausschuß bei der Lampenproduktion und verteuerte damit die Lampe in nicht akzeptabler Weise, so daß diese Maßnahme nicht zur Lösung der Aufgabe der Erfindung taugt.First of all, an attempt was made to achieve the above object by narrowing the hook-in opening by bending the hook-shaped holder section together. Although the aforementioned measure reduced the risk of the filament being detached, the bending of the hook-shaped holder section caused an increased scrap in lamp production and thus made the lamp more expensive than is acceptable, so that this measure is not suitable for achieving the object of the invention.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Besonders vorteilhafte Merkmale der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the characterizing features of claim 1. Particularly advantageous features of the invention are described in the subclaims.

Bei den erfindungsgemäßen elektrischen Glühlampen besitzt das Gestell zur Halterung der Glühwendel mindestens einen hakenförmigen, mit einem freien Ende versehenen Halter, in den die Glühwendel eingehängt ist. Das freie Ende des hakenförmigen Halters ist derart abgewinkelt, daß es die Einhängeöffnung des hakenförmigen Halters verengt und damit eine Aushängung der Glühwendel verhindert. Vorteilhafterweise ist der mindestens eine hakenförmige Halter mit einem U-förmigen Abschnitt ausgestattet, in den die Glühwendel eingehängt wird. Das abgewinkelte freie Ende des hakenförmigen Halters ist an einen ersten Schenkel dieses U-förmigen Abschnittes angeformt und erstreckt sich in Richtung des zweiten U-Schenkels, so daß der Abstand zwischen dem abgewinkelten freien Ende des Halters und dem zweiten U-förmigen Schenkel kleiner als der Abstand zwischen den beiden U-förmigen Schenkeln ist. Dadurch wird die Einhängeöffnung des hakenförmigen Halters verengt und die Gefahr des Aushängens der Glühwendel verringert. Besonders vorteilhaft ist diese Wendelhalterung bei Glühlampen mit Brückenwendeln, die mehrere lichtemittierende und nichtlichtemittierende Wendelabschnitte aufweisen.In the electric light bulbs according to the invention, the frame for holding the filament has at least one hook-shaped holder with a free end, into which the filament is suspended. The free end of the hook-shaped holder is angled in such a way that it narrows the hook-in opening of the hook-shaped holder and thus prevents the filament from being detached. The at least one hook-shaped holder is advantageously equipped with a U-shaped section into which the filament is hung. The angled free end of the hook-shaped holder is formed on a first leg of this U-shaped section and extends in the direction of the second U-leg, so that the distance between the angled free end of the holder and the second U-shaped leg is smaller than that The distance between the two U-shaped legs is. This narrows the hook opening of the hook-shaped holder and reduces the risk of the incandescent filament unhooking. This filament holder is particularly advantageous in the case of incandescent lamps with bridge filaments which have a plurality of light-emitting and non-light-emitting filament sections.

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below on the basis of a preferred exemplary embodiment.

Die Figur zeigt eine nicht maßstabsgetreue, stark schematisierte Darstellung einer an Netzspannung betriebenen Halogenglühlampe mit einer Leistungsaufnahme von ca. 650 W gemäß des bevorzugten Ausführungsbeispiels. Die Halogenglühlampe besitzt einen einseitig gequetschten Lampenkolben 1. Im Quetschfuß 1b der Lampe sind zwei Molybdänfolien 2 gasdicht eingeschmolzen. Aus dem Quetschfuß 1b ragen ferner zwei Stromzuführungen 3 heraus, die jeweils mit einer der Molybdänfolien 2 verschweißt sind. Innerhalb des Lampenkolbens 1 befindet sich ein Gestell zur Halterung einer im wesentlichen U-förmigen Brückenwendel 4, die drei lichtemittierende Wendelabschnitte 4a besitzt. Das Gestell besteht aus einem Quarzglasbalken 5, zwei stromführenden Drähten 6 und zwei hakenförmigen Haltern 7. Die stromführenden Drähte 6 sind jeweils an einem Ende der Brückenwendel 4 befestigt und mit einer Molybdänfolie 2 verschweißt, so daß eine elektrisch leitende Verbindung zwischen den Stromzuführungen 3 und der Brückenwendel 4 besteht. Die Enden der Brückenwendel 4 und die stromführenden Drähte 6 sind ferner im Quarzglasbalken 5 eingeschmolzen. Jeweils ein Ende der hakenförmigen Halter 7 ist in dem Quarzbalkenhalter 5 fixiert. Das andere Ende der hakenförmigen Halter 7 weist jeweils einen U-förmigen Abschnitt auf, in denen die Brückenwendel 4 mit Hilfe von zwei Drahtschlaufen 8 eingehängt ist. Die Drahtschlaufen 8 sind im Bereich der beiden nichtlichtemittierenden Wendelabschnitte, welche die lichtemittierenden Wendelabschnitte 4a voneinander trennen, an der Brückenwendel 4 befestigt. Die beiden hakenförmigen Halter 7 weisen jeweils ein abgewinkeltes freies Ende 7a auf, das annähernd rechtwinklig von einem ersten Schenkel 7b des entsprechenden U-förmigen Halterabschnittes abgebogen ist. Die abgewinkelten freien Enden 7a erstrecken sich jeweils in Richtung des zweiten Schenkels 7c des entsprechenden U-förmigen Halterabschnittes und verengen dadurch die Einhängeöffnung der hakenförmigen Halter 7. Die Einhängeöffnung ist, ohne abgewinkeltes Ende 7a, durch den Abstand der beiden Schenkel 7b, 7c des U-förmigen Halterabschnittes definiert und beträgt hier ca. 1,8 mm. Durch das sich in Richtung des zweiten Schenkels 7c erstreckende abgewinkelte freie Ende 7a des hakenförmigen Halters 7 wird die wirksame Einhängeöffnung auf ca. 1 mm verengt. Das entspricht dem Abstand zwischen dem abgewinkelte freien Ende 7a und dem Ende des zweiten Schenkels 7c des U-förmigen Halterabschnittes. Die Länge der abgewinkelten freien Enden 7a beträgt ca. 2,5 mm. Die hakenförmigen Halter 7 bestehen aus Molybdändraht und die Drahtschlaufen 8 sind aus Wolfram gefertigt. Die Drahtschlaufen 8 besitzen eine Drahtstärke von ca. 0,4 mm.The figure shows a not to scale, highly schematic representation of a halogen incandescent lamp operated at mains voltage with a power consumption of approximately 650 W in accordance with the preferred exemplary embodiment. The halogen incandescent lamp has a lamp bulb 1 squeezed on one side. Two molybdenum foils 2 are melted in a gas-tight manner in the pinch base 1b of the lamp. Two power leads 3 also protrude from the squeezing foot 1b and are each welded to one of the molybdenum foils 2. Within the lamp bulb 1 there is a frame for holding an essentially U-shaped bridge filament 4, which has three light-emitting filament sections 4a. The frame consists of a quartz glass beam 5, two current-carrying wires 6 and two hook-shaped holders 7. The current-carrying wires 6 are each attached to one end of the bridge helix 4 and welded to a molybdenum foil 2, so that an electrically conductive connection between the current leads 3 and the Bridge spiral 4 exists. The ends of the bridge coil 4 and the current-carrying Wires 6 are also melted into the quartz glass beam 5. One end of the hook-shaped holder 7 is fixed in the quartz beam holder 5. The other end of the hook-shaped holder 7 each has a U-shaped section, in which the bridge coil 4 is suspended with the aid of two wire loops 8. The wire loops 8 are fastened to the bridge coil 4 in the region of the two non-light-emitting coil sections which separate the light-emitting coil sections 4a from one another. The two hook-shaped holders 7 each have an angled free end 7a which is bent approximately at right angles from a first leg 7b of the corresponding U-shaped holder section. The angled free ends 7a each extend in the direction of the second leg 7c of the corresponding U-shaped holder section and thereby narrow the hook-in opening of the hook-shaped holder 7. The hook-in opening is, without angled end 7a, due to the distance between the two legs 7b, 7c of the U -shaped holder section defines and is here about 1.8 mm. Due to the angled free end 7a of the hook-shaped holder 7, which extends in the direction of the second leg 7c, the effective suspension opening is narrowed to approximately 1 mm. This corresponds to the distance between the angled free end 7a and the end of the second leg 7c of the U-shaped holder section. The length of the angled free ends 7a is approximately 2.5 mm. The hook-shaped holder 7 consist of molybdenum wire and the wire loops 8 are made of tungsten. The wire loops 8 have a wire thickness of approximately 0.4 mm.

Claims (3)

Elektrische Glühlampe mit einem Gestell zur Halterung mindestens einer Glühwendel (4), wobei das Gestell mindestens einen hakenförmigen, mit einem freien Ende versehenen Halter (7) aufweist, in den die mindestens eine Glühwendel (4) eingehängt ist, dadurch gekennzeichnet, daß das freie Ende (7a) des hakenförmigen Halters (7) abgewinkelt ist, so daß es (7a) die Einhängeöffnung des hakenförmigen Halters (7) verengt.Electric incandescent lamp with a frame for holding at least one filament (4), the frame having at least one hook-shaped holder (7) with a free end into which the at least one filament (4) is suspended, characterized in that the free one End (7a) of the hook-shaped holder (7) is angled so that it (7a) narrows the hanging opening of the hook-shaped holder (7). Elektrische Glühlampe nach Anspruch 1, dadurch gekennzeichnet, daß der mindestens eine hakenförmige Halter (7) einen U-förmigen Abschnitt zur Halterung einer Glühwendel (4) aufweist, das abgewinkelte freie Ende (7a) des Halters (7) an einen ersten Schenkel (7b) dieses U-förmigen Abschnitts angeformt ist und sich in Richtung des zweiten Schenkels (7c) dieses U-förmigen Abschnitts erstreckt, so daß der Abstand zwischen dem abgewinkelten freien Ende (7a) und dem zweiten U-förmigen Schenkel (7c) kleiner als der Abstand zwischen den beiden U-förmigen Schenkeln (7b, 7c) ist.Electric incandescent lamp according to Claim 1, characterized in that the at least one hook-shaped holder (7) has a U-shaped section for holding an incandescent filament (4), the angled free end (7a) of the holder (7) on a first leg (7b ) this U-shaped section is formed and extends in the direction of the second leg (7c) of this U-shaped section, so that the distance between the angled free end (7a) and the second U-shaped leg (7c) is smaller than that Distance between the two U-shaped legs (7b, 7c). Elektrische Glühlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Lampe eine Brückenwendel (4) mit mehreren lichtemittierenden Wendelabschnitten (4a), die durch nicht-lichtemittierende Wendelabschnitte getrennt sind, besitzt und das Gestell mehrere hakenförmige Halter (7) aufweist, wobei die Brückenwendel (4) im Bereich der nichtlichtemittierenden Wendelabschnitte in die hakenförmigen Halter (7) eingehängt ist.Electric incandescent lamp according to claim 1, characterized in that the lamp has a bridge filament (4) with a plurality of light-emitting filament sections (4a), which are separated by non-light-emitting filament sections, and the frame has a plurality of hook-shaped holders (7), the bridge filament (7 4) is hooked into the hook-shaped holder (7) in the area of the non-light-emitting spiral sections.
EP96111048A 1995-07-28 1996-07-09 Electric incandescent lamp Expired - Lifetime EP0756313B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19527580A DE19527580A1 (en) 1995-07-28 1995-07-28 Electric light bulb
DE19527580 1995-07-28

Publications (3)

Publication Number Publication Date
EP0756313A2 true EP0756313A2 (en) 1997-01-29
EP0756313A3 EP0756313A3 (en) 1997-08-13
EP0756313B1 EP0756313B1 (en) 2000-04-05

Family

ID=7767999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111048A Expired - Lifetime EP0756313B1 (en) 1995-07-28 1996-07-09 Electric incandescent lamp

Country Status (5)

Country Link
US (1) US5760543A (en)
EP (1) EP0756313B1 (en)
CA (1) CA2181953A1 (en)
DE (2) DE19527580A1 (en)
ES (1) ES2145349T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6639364B1 (en) * 2000-06-29 2003-10-28 Koninklijke Philips Electronics N.V. Halogen incandescent capsule having filament leg clamped in press seal
DE10112690A1 (en) * 2001-03-16 2002-09-19 Philips Corp Intellectual Pty Tungsten-halogen lamp for operating at mains voltage, has mount formed from single-piece support wire
EP1897117A2 (en) * 2005-06-24 2008-03-12 Koninklijke Philips Electronics N.V. Halogen incandescent lamp and method for manufacturing such a lamp

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7408624U (en) * 1975-07-03 Patent Treuhand Gesellschaft Fuer E Halogen light bulb
BE476889A (en) * 1944-11-30
US2497566A (en) * 1949-04-27 1950-02-14 Gen Electric Mount structure for electric lamps
US2924735A (en) * 1957-01-31 1960-02-09 Westinghouse Electric Corp Incandescent lamp
US3254257A (en) * 1963-08-20 1966-05-31 Westinghouse Electric Corp Lamp mount and component therefor
US3725720A (en) * 1972-07-12 1973-04-03 Westinghouse Electric Corp Electric lamp mount having a beaded filament coil
GB1487502A (en) * 1974-03-12 1977-10-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogen incandescent lamp
DE3609908A1 (en) * 1986-03-24 1987-10-01 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HALOGEN BULB AND METHOD FOR THEIR PRODUCTION
JPH06231736A (en) * 1993-02-09 1994-08-19 Toshiba Lighting & Technol Corp Lead wire and electric lamp
JPH06325738A (en) * 1993-05-18 1994-11-25 Matsushita Electron Corp Incandescent lamp

Also Published As

Publication number Publication date
EP0756313B1 (en) 2000-04-05
CA2181953A1 (en) 1997-01-29
DE59604866D1 (en) 2000-05-11
US5760543A (en) 1998-06-02
DE19527580A1 (en) 1997-01-30
ES2145349T3 (en) 2000-07-01
EP0756313A3 (en) 1997-08-13

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