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EP0751550A1 - Method for assembling an electric incandescent lamp and incandescent lamp fabricated according to said method - Google Patents

Method for assembling an electric incandescent lamp and incandescent lamp fabricated according to said method Download PDF

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Publication number
EP0751550A1
EP0751550A1 EP96109538A EP96109538A EP0751550A1 EP 0751550 A1 EP0751550 A1 EP 0751550A1 EP 96109538 A EP96109538 A EP 96109538A EP 96109538 A EP96109538 A EP 96109538A EP 0751550 A1 EP0751550 A1 EP 0751550A1
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EP
European Patent Office
Prior art keywords
frame
filament
support struts
frame half
support
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
EP96109538A
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German (de)
French (fr)
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EP0751550B1 (en
Inventor
Andreas Krinke
Herbert Kugler
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
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Publication of EP0751550A1 publication Critical patent/EP0751550A1/en
Application granted granted Critical
Publication of EP0751550B1 publication Critical patent/EP0751550B1/en
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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
    • H01K3/06—Attaching of incandescent bodies to mount
    • 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 a method for producing an electric light bulb according to the preamble of claim 1 and to an electric light bulb manufactured by this manufacturing method.
  • the US Pat. No. 4,578,616 describes a halogen incandescent lamp with an incandescent filament, which is designed as a planar luminous element and is fixed in a frame-like frame within the lamp bulb.
  • the frame-like frame consists essentially of two quartz bridges provided with helix holders, which are connected to one another by two support struts melted into the quartz bridges.
  • the coiled filament ends are threaded onto the two support struts and the uncoiled, non-illuminating filament sections are hooked into the hook-shaped filament holder.
  • the holder of the incandescent filament described in the aforementioned patent requires that the filament assembly must be threaded onto the two support struts before the support struts melt into the quartz bridges when the filament is installed.
  • this procedure has the disadvantage that the incandescent filament is strongly heated when the support struts melt into the quartz bridges, so that undesirable oxidations can occur on the incandescent filament because the quartz bridges have to be heated to a temperature of more than 2000 ° C. in this manufacturing step. Oxidations on the filament can lead to deposits on the lamp bulb during lamp operation and reduce the life of the lamp.
  • the manufacturing method for electric light bulbs according to the invention is characterized in particular by an improved helix assembly.
  • the frame-like frame in which the incandescent filament is held consists of two essentially identical frame halves which were prefabricated in separate work steps before the filament was assembled. These two halves of the frame are clamped as prefabricated lamp parts, together with the filament, for filament mounting in a fixing device.
  • the construction of the frame-like frame from two essentially halves enables a fully mechanized manufacture of the frame halves, simplifies the helical assembly and reduces the manufacturing costs.
  • the manufacture of the frame halves in separate operations before the helix assembly has the advantage that the filament during the manufacture of the frame, in particular during the melting of the support struts in the quartz webs, is not exposed to high thermal loads that would cause oxidation on the filament.
  • the two frame halves according to the invention each have a web made of an electrically insulating material and provided with helix holders, to which a plurality of support struts are fastened.
  • the aforementioned webs are preferably made of quartz glass and the support struts made of a high-melting metal.
  • Each of the two frame halves advantageously has two support struts of different lengths, which are melted into the corresponding web.
  • the coiled filament ends are advantageously threaded onto the long support struts of the frame halves.
  • the free ends of the long support struts are advantageously welded to the free ends of the short support struts.
  • the free ends of the support struts are advantageously leveled in the welding area.
  • the production method according to the invention is particularly applicable to electric incandescent lamps with planar incandescent filaments which are held in a frame-like frame. Such incandescent lamps are used, for example, for optical images in projectors or similar devices.
  • the incandescent lamp according to the invention shown schematically in FIG. 4, is a halogen incandescent lamp with a nominal voltage of 230 V and an electrical power consumption of approximately 500 W.
  • This lamp has a gas-tight lamp bulb 1 made of quartz glass, which has a pinch foot 1 a at one end. Two molybdenum foils 2, 3 are melted gas-tight in the squeezing foot 1a.
  • molybdenum foils 2, 3 are, on the one hand, electrically conductive to a frame arranged inside the lamp bulb 1, which is used to hold and electrically connect the planar filament 11, and, on the other hand, each to a power supply 5, 6 protruding from the squeezing foot 1a. After the lamp has been socketed, the squeezing foot 1 a is placed in a socket equipped with contact pins (not shown).
  • the frame-like frame for the filament 11 consists of two prefabricated identical halves 4a, 4b.
  • the first frame half 4a comprises a web 7a made of quartz glass, into which a long 8a and a short 9a support strut made of molybdenum as well as four hook-shaped coil holders 10a also made of molybdenum are melted.
  • the second frame half completely analogously, consists of the quartz glass web 7b, in which a long 8b and a short 9b support strut made of molybdenum as well as four hook-shaped coil holders 10b made of molybdenum are also melted.
  • the two frame halves 4a, 4b are held together by a welded connection between the support struts 8a, 9b and 8b, 9a.
  • the incandescent filament 11 is meandering and has a plurality of simply coiled sections which are separated from one another by uncoiled sections.
  • the uncoiled sections of the filament 11 are suspended in the filament holder 10a, 10b.
  • the incandescent filament 11 is fastened with its simply coiled ends to the long support struts 8a, 8b.
  • the method according to the invention for producing an electric incandescent lamp is now explained in more detail with reference to FIGS. 1 to 3.
  • the invention relates to helical assembly.
  • the manufacturing processes which are not part of the helical assembly are well-known prior art and are therefore only described if they are related to the helical assembly according to the invention and are important for understanding the invention.
  • FIGS. 1 and 2 For the assembly of the filament 11 in the frame-like frame, two identical frame halves 4a, 4b are produced.
  • the structure of such a frame half 4a is shown schematically in FIGS. 1 and 2.
  • the frame half 4a has a web 7a made of quartz glass, into which a long 8a and a short 9a support strut made of molybdenum and four hook-shaped coil holders 10a made of molybdenum are melted.
  • the four coil holders 10a are arranged equidistantly next to one another between the support struts 8a, 9a. However, the distance between the long support strut 8a and the coil holder 10a closest to it is greater than the distance between the short support strut 9a and the coil holder 10a closest to it.
  • the free ends 13a, 14a of the support struts 8a, 9a are leveled.
  • the support struts 8a, 9a and the coil holder 10a have flats 12 in the melting area, which serve as an anti-twist device.
  • the web 7a consists of two quartz glass rods 7a ', 7a'', between which the support struts 8a, 9a and the coil holder 10a are arranged.
  • the quartz glass rods 7a ', 7a'' are heated to their softening temperature and then pressed together.
  • the frame halves 4a, 4b are produced in a fully mechanized manner in a beam frame squaring machine.
  • two prefabricated frame halves 4a, 4b are placed in a fixing device (not shown) in such a way that the webs 7a, 7b run parallel and the free end of the long support strut 8a of the first frame half 4a the free end of the short support strut 9b of the second frame half 4b and the free end of the short support strut 9a of the first frame half 4a faces the free end of the long support strut 8b of the second frame half 4b.
  • the likewise prefabricated meandering filament 11 is inserted into the fixing device.
  • the simply coiled filament ends 11a, 11b are threaded onto the long support struts 8a, 8b of the frame halves 4a, 4b and the uncoiled sections of the filament 11 are suspended in the filament holders 10a, 10b. Then the simply coiled sections of the incandescent filament 11 are stretched by pulling apart the frame halves 4a, 4b stored in the fixing device, that is to say by increasing the distance between the webs 7a, 7b. The two frame halves 4a, 4b are then connected to one another by welding the leveled ends of their support struts 8a, 9a, 8b, 9b.
  • Laser or resistance welding are suitable for this.
  • the single-coil filament ends 11a, 11b threaded onto the long support struts 8a, 8b are aligned, pressed onto the support struts 8a, 8b and fixed to the support struts 8a, 8b outside the leveled ends 13a by means of current passage.
  • the ends of the support struts protruding from the upper web 7a 8a, 9a are shortened.
  • the ends of the support struts 8b, 9b projecting at the lower web 7b are each welded to a molybdenum foil 2, 3.
  • the two molybdenum foils 2, 3 are connected to one another by a welded-on U-shaped molybdenum wire 15.
  • the resulting frame of the lamp is shown in Figure 3. It is inserted and aligned in the prefabricated lamp bulb 1.
  • the lamp bulb 1 is then squeezed tightly in a known manner over the molybdenum foils 2, 3 and, usually via a pump handle, is evacuated and filled with the inert gas / halogen mixture.
  • the U-shaped molybdenum wire 15 is cut open, so that its legs now form the current leads 5, 6 (FIG. 4).
  • the lamp is then socketed in a known manner.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)

Abstract

The method involves coil mounting in a frame consisting of two insulating bars (7a,7b) with coil holders (10a,10b) joined together by supports (8a,8b,9a,9b). Two identical frame halves (4a,4b) are made. The prefabricated frame halves are placed in a fixing device so that the bars are parallel and the free ends of the supports face each other. The first coil end (11a) is placed on the free end of one support in the first frame half. The second coil end (11b) is placed on the free end of support in the second frame half. The coil is suspended in the coil holders (10a,10b) and tensioned in the fixing device by increasing the distance between the bars. The supports in the first frame half are welded to those in the second half. The mounted coil ends are positioned and fixed on the corresp. supports.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer elektrischen Glühlampe gemäß dem Oberbegriff des Patentanspruchs 1 sowie eine nach diesem Herstellungsverfahren gefertigte elektrische Glühlampe.The invention relates to a method for producing an electric light bulb according to the preamble of claim 1 and to an electric light bulb manufactured by this manufacturing method.

Die Patentschrift US 4,578,616 beschreibt eine Halogenglühlampe mit einer Glühwendel, die als planarer Leuchtkörper ausgebildet und in einem rahmenartigen Gestell innerhalb des Lampenkolbens fixiert ist. Das rahmenartige Gestell besteht im wesentlichen aus zwei mit Wendelhaltern versehenen Quarzbrücken, die durch zwei in die Quarzbrücken eingeschmolzene Stützstreben miteinander verbunden sind. Die gewendelten Glühwendelenden sind auf die beiden Stützstreben aufgefädelt und die ungewendelten, nichtleuchtenden Glühwendelabschnitte sind in die hakenförmigen Wendelhalter eingehängt.The US Pat. No. 4,578,616 describes a halogen incandescent lamp with an incandescent filament, which is designed as a planar luminous element and is fixed in a frame-like frame within the lamp bulb. The frame-like frame consists essentially of two quartz bridges provided with helix holders, which are connected to one another by two support struts melted into the quartz bridges. The coiled filament ends are threaded onto the two support struts and the uncoiled, non-illuminating filament sections are hooked into the hook-shaped filament holder.

Die im vorgenannten Patent beschriebene Halterung der Glühwendel erfordert, daß bei der Wendelmontage das Auffädeln der Glühwendelenden auf die beiden Stützstreben vor dem Einschmelzen der Stützstreben in die Quarzbrücken erfolgen muß. Diese Verfahrensweise hat aber den Nachteil, daß die Glühwendel beim Einschmelzen der Stützstreben in die Quarzbrükken stark erhitzt wird, so daß unerwünschte Oxidationen an der Glühwendel auftreten können, weil die Quarzbrücken bei diesem Fertigungsschritt auf eine Temperatur von mehr als 2000 °C erwärmt werden müssen. Oxidationen an der Glühwendel können während des Lampenbetriebes zu Belägen auf dem Lampenkolben führen und die Lebensdauer der Lampe reduzieren.The holder of the incandescent filament described in the aforementioned patent requires that the filament assembly must be threaded onto the two support struts before the support struts melt into the quartz bridges when the filament is installed. However, this procedure has the disadvantage that the incandescent filament is strongly heated when the support struts melt into the quartz bridges, so that undesirable oxidations can occur on the incandescent filament because the quartz bridges have to be heated to a temperature of more than 2000 ° C. in this manufacturing step. Oxidations on the filament can lead to deposits on the lamp bulb during lamp operation and reduce the life of the lamp.

Es ist die Aufgabe der Erfindung, ein Verfahren zur Herstellung einer elektrischen Glühlampe mit einer verbesserten Wendelmontage bereitzustellen, das insbesondere die vorgenannten Nachteile, die das Fertigungsverfahren gemäß des Standes der Technik aufweist, vermeidet sowie eine elektrische Glühlampe gemäß des erfindungsgemäßen Herstellungsverfahrens bereitzustellen.It is the object of the invention to provide a method for producing an electric incandescent lamp with an improved filament mounting, which in particular has the above-mentioned disadvantages that the manufacturing method according to the prior art, avoids and provide an electric light bulb according to the manufacturing method according to the invention.

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

Das erfindungsgemäße Herstellungsverfahren für elektrische Glühlampen zeichnet sich insbesondere durch eine verbesserte Wendelmontage aus. Das rahmenartige Gestell, in dem die Glühwendel gehaltert wird, besteht erfindungsgemäß aus zwei im wesentlichen identischen Gestellhälften, die bereits vor der Wendelmontage in separaten Arbeitsgängen vorgefertigt wurden. Diese beiden Gestellhälften werden als vorgefertigte Lampenteile, zusammen mit der Glühwendel, zur Wendelmontage in eine Fixiervorrichtung eingespannt. Der Aufbau des rahmartigen Gestells aus zwei im wesentlichen Hälften ermöglicht eine vollmechanisierte Fertigung der Gestellhälften, vereinfacht die Wendelmontage und reduziert die Herstellungskosten. Die Fertigung der Gestellhälften in separaten Arbeitsgängen vor der Wendelmontage hat den Vorteil, daß die Glühwendel während der Herstellung des Gestells, insbesondere während des Einschmelzens der Stützstreben in die Quarzstege, keiner hohen thermischen Belastung, die Oxidationen an der Glühwendel verursachen würde, ausgesetzt ist.The manufacturing method for electric light bulbs according to the invention is characterized in particular by an improved helix assembly. According to the invention, the frame-like frame in which the incandescent filament is held consists of two essentially identical frame halves which were prefabricated in separate work steps before the filament was assembled. These two halves of the frame are clamped as prefabricated lamp parts, together with the filament, for filament mounting in a fixing device. The construction of the frame-like frame from two essentially halves enables a fully mechanized manufacture of the frame halves, simplifies the helical assembly and reduces the manufacturing costs. The manufacture of the frame halves in separate operations before the helix assembly has the advantage that the filament during the manufacture of the frame, in particular during the melting of the support struts in the quartz webs, is not exposed to high thermal loads that would cause oxidation on the filament.

Die beiden erfindungsgemäßen Gestellhälften weisen jeweils einen aus einem elektrisch isolierenden Material bestehenden, mit Wendelhaltern versehenen Steg auf, an den mehrere Stützstreben befestigt sind. Die vorgenannten Stege bestehen vorzugsweise aus Quarzglas und die Stützstreben aus einem hochschmelzenden Metall. Jede der beiden Gestellhälften weist vorteilhafterweise zwei unterschiedlich lange Stützstreben auf, die in den entsprechenden Steg eingeschmolzen sind. Die gewendelten Glühwendelenden werden vorteilhafterweise auf die langen Stützstreben der Gestellhälften aufgefädelt. Zum Verbinden der beiden Gestellhälften werden vorteilhafterweise die freien Ende der langen Stützstreben mit den freien Enden der kurzen Stützstreben verschweißt. Dadurch wird gewährleistet, daß die Glühwendelenden außerhalb der Stützstrebenverbindung befestigt sind, und damit sichergestellt, daß die Stützstrebenverschweißung durch das Befestigen der Glühwendelenden an den Stützstreben nicht beschädigt wird. Die freien Enden der Stützstreben sind vorteilhafterweise im Verschweißungsbereich planiert.The two frame halves according to the invention each have a web made of an electrically insulating material and provided with helix holders, to which a plurality of support struts are fastened. The aforementioned webs are preferably made of quartz glass and the support struts made of a high-melting metal. Each of the two frame halves advantageously has two support struts of different lengths, which are melted into the corresponding web. The coiled filament ends are advantageously threaded onto the long support struts of the frame halves. To connect the two frame halves, the free ends of the long support struts are advantageously welded to the free ends of the short support struts. This ensures that the filament ends are attached outside the support strut connection, and thus ensures that the support strut welding is not damaged by attaching the filament ends to the support struts. The free ends of the support struts are advantageously leveled in the welding area.

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
eine Draufsicht auf eine vorgefertigte Gestellhälfte gemäß des bevorzugten Ausführungsbeispiels
Figur 2
eine Seitenansicht der in Figur 1 abgebildeten Gestellhälfte
Figur 3
eine Draufsicht auf das komplette Gestell nach der Wendelmontage, einschließlich Einschmelzungsfolien und Stromzuführungen
Figur 4
eine schematische Darstellung einer entsprechend dem erfindungsgemäßen Verfahren hergestellte elektrische Glühlampe (Sockel ist nicht abgebildet)
The invention is explained in more detail below on the basis of a preferred exemplary embodiment. Show it:
Figure 1
a plan view of a prefabricated frame half according to the preferred embodiment
Figure 2
a side view of the frame half shown in Figure 1
Figure 3
a plan view of the complete frame after the helix assembly, including sealing foils and power supplies
Figure 4
a schematic representation of an electric incandescent lamp produced according to the inventive method (base is not shown)

Das erfindungsgemäße Herstellungsverfahren ist insbesondere auf elektrische Glühlampen mit planaren Glühwendeln, die in einem rahmenartigen Gestell gehaltert werden, anwendbar. Derartige Glühlampen werden beispielsweise zu optischen Abbildungen in Projektoren oder ähnlichen Geräten verwendet. Die in Figur 4 schematisch dargestellte erfindungsgemäße Glühlampe ist eine Halogenglühlampe mit einer Nennspannung von 230 V und einer elektrischen Leistungsaufnahme von ca. 500 W. Diese Lampe besitzt einen gasdicht verschlossenen Lampenkolben 1 aus Quarzglas, der an einem Ende einen Quetschfuß 1a aufweist. In dem Quetschfuß 1a sind zwei Molybdänfolien 2, 3 gasdicht eingeschmolzen. Diese Molybdänfolien 2, 3 sind einerseits elektrisch leitend mit einem innerhalb des Lampenkolbens 1 angeordneten Gestell, das zur Halterung und zum elektrischen Anschluß der planaren Glühwendel 11 dient, und andererseits jeweils mit einer aus dem Quetschfuß 1a herausragenden Stromzuführung 5, 6 verbunden. Nach dem Aufsockeln der Lampe steckt der Quetschfuß 1a in einem mit Kontaktstiften ausgestatteten Sockel (nicht abgebildet).The production method according to the invention is particularly applicable to electric incandescent lamps with planar incandescent filaments which are held in a frame-like frame. Such incandescent lamps are used, for example, for optical images in projectors or similar devices. The incandescent lamp according to the invention, shown schematically in FIG. 4, is a halogen incandescent lamp with a nominal voltage of 230 V and an electrical power consumption of approximately 500 W. This lamp has a gas-tight lamp bulb 1 made of quartz glass, which has a pinch foot 1 a at one end. Two molybdenum foils 2, 3 are melted gas-tight in the squeezing foot 1a. These molybdenum foils 2, 3 are, on the one hand, electrically conductive to a frame arranged inside the lamp bulb 1, which is used to hold and electrically connect the planar filament 11, and, on the other hand, each to a power supply 5, 6 protruding from the squeezing foot 1a. After the lamp has been socketed, the squeezing foot 1 a is placed in a socket equipped with contact pins (not shown).

Das rahmenartige Gestell für die Glühwendel 11 besteht aus zwei vorgefertigten identischen Hälften 4a, 4b. Die erste Gestellhälfte 4a umfaßt einen Steg 7a aus Quarzglas, in den eine lange 8a und eine kurze 9a Stützstrebe aus Molybdän sowie vier hakenförmige Wendelhalter 10a ebenfalls aus Molybdän eingeschmolzen sind. Die zweite Gestellhälfte besteht, völlig analog, aus dem Quarzglassteg 7b, in dem ebenfalls eine lange 8b und eine kurze 9b Stützstrebe aus Molybdän sowie vier aus Molybdän gefertigte, hakenförmige Wendelhalter 10b eingeschmolzen sind. Die beiden Gestellhälften 4a, 4b werden durch eine Schweißverbindung zwischen den Stützstreben 8a, 9b bzw. 8b, 9a zusammengehalten. Die Glühwendel 11 ist mäanderförmig und besitzt mehrere einfach gewendelte Abschnitte, die durch ungewendelte Abschnitte voneinander getrennt sind. Die ungewendelten Abschnitte der Glühwendel 11 sind in die Wendelhalter 10a, 10b eingehängt. Die Glühwendel 11 ist mit ihren einfach gewendelten Enden an den langen Stützstreben 8a, 8b befestigt.The frame-like frame for the filament 11 consists of two prefabricated identical halves 4a, 4b. The first frame half 4a comprises a web 7a made of quartz glass, into which a long 8a and a short 9a support strut made of molybdenum as well as four hook-shaped coil holders 10a also made of molybdenum are melted. The second frame half, completely analogously, consists of the quartz glass web 7b, in which a long 8b and a short 9b support strut made of molybdenum as well as four hook-shaped coil holders 10b made of molybdenum are also melted. The two frame halves 4a, 4b are held together by a welded connection between the support struts 8a, 9b and 8b, 9a. The incandescent filament 11 is meandering and has a plurality of simply coiled sections which are separated from one another by uncoiled sections. The uncoiled sections of the filament 11 are suspended in the filament holder 10a, 10b. The incandescent filament 11 is fastened with its simply coiled ends to the long support struts 8a, 8b.

Das erfindungsgemäße Verfahren zur Herstellung einer elektrischen Glühlampe wird nun anhand der Figuren 1 bis 3 näher erläutert. Die Erfindung betrifft die Wendelmontage. Die nicht zur Wendelmontage gehörenden Fertigungsabläufe sind wohlbekannter Stand der Technik und werden daher nur beschrieben, wenn sie im Zusammenhang mit der erfindungsgemäßen Wendelmontage stehen und zum Verständnis der Erfindung von Bedeutung sind.The method according to the invention for producing an electric incandescent lamp is now explained in more detail with reference to FIGS. 1 to 3. The invention relates to helical assembly. The manufacturing processes which are not part of the helical assembly are well-known prior art and are therefore only described if they are related to the helical assembly according to the invention and are important for understanding the invention.

Für die Montage der Glühwendel 11 im rahmenartigen Gestell werden zwei identische Gestellhälften 4a, 4b hergestellt. Der Aufbau einer derartigen Gestellhälfte 4a ist in den Figuren 1 und 2 schematisch dargestellt. Die Gestellhälfte 4a weist einen Steg 7a aus Quarzglas, in die eine lange 8a und eine kurze 9a Stützstrebe aus Molybdän sowie vier hakenförmige Wendelhalter 10a aus Molybdän eingeschmolzen sind. Die vier Wendelhalter 10a sind zwischen den Stützstreben 8a, 9a, äquidistant nebeneinander angeordnet. Allerdings ist der Abstand der langen Stützstrebe 8a zu dem ihr nächstgelegenen Wendelhalter 10a größer als der Abstand der kurzen Stützstrebe 9a zu dem ihr nächstgelegenen Wendelhalter 10a. Die freien Enden 13a, 14a der Stützstreben 8a, 9a sind planiert. Außerdem besitzen die Stützstreben 8a, 9a und die Wendelhalter 10a im Einschmelzungsbereich Anflachungen 12, die als Verdrehsicherung dienen. Der Steg 7a besteht aus zwei Quarzglasstäben 7a', 7a'', zwischen denen die Stützstreben 8a, 9a und die Wendelhalter 10a angeordnet sind. Zum Einschmelzen der Stützstreben 8a, 9a und der Wendelhalter 10a werden die Quarzglasstäbe 7a', 7a'' auf ihre Erweichungstemperatur erhitzt und anschließend zusammengepreßt. Nach dem Erkalten sind die Quarzglasstäbe 7a', 7a'' miteinander verschmolzen und bilden den Steg 7a mit den darin eingeschmolzenen Stützstreben 8a, 9a und Wendelhaltern 10a. Die Gestellhälften 4a, 4b werden vollmechanisiert in einem Balkengestellquetschrundläufer hergestellt.For the assembly of the filament 11 in the frame-like frame, two identical frame halves 4a, 4b are produced. The structure of such a frame half 4a is shown schematically in FIGS. 1 and 2. The frame half 4a has a web 7a made of quartz glass, into which a long 8a and a short 9a support strut made of molybdenum and four hook-shaped coil holders 10a made of molybdenum are melted. The four coil holders 10a are arranged equidistantly next to one another between the support struts 8a, 9a. However, the distance between the long support strut 8a and the coil holder 10a closest to it is greater than the distance between the short support strut 9a and the coil holder 10a closest to it. The free ends 13a, 14a of the support struts 8a, 9a are leveled. In addition, the support struts 8a, 9a and the coil holder 10a have flats 12 in the melting area, which serve as an anti-twist device. The web 7a consists of two quartz glass rods 7a ', 7a'', between which the support struts 8a, 9a and the coil holder 10a are arranged. To melt the support struts 8a, 9a and the coil holder 10a, the quartz glass rods 7a ', 7a''are heated to their softening temperature and then pressed together. After cooling, the quartz glass rods 7a ', 7a''are fused together and form the web 7a with the support struts 8a, 9a and coil holders 10a melted therein. The frame halves 4a, 4b are produced in a fully mechanized manner in a beam frame squaring machine.

Zur Wendelmontage werden zwei vorgefertigte Gestellhälften 4a, 4b derart in eine Fixiervorrichtung (nicht abgebildet) eingelegt, daß die Stege 7a, 7b parallel verlaufen und das freie Ende der langen Stützstrebe 8a der ersten Gestellhälfte 4a dem freien Ende der kurzen Stützstrebe 9b der zweiten Gestellhälfte 4b sowie das freie Ende der kurzen Stützstrebe 9a der ersten Gestellhälfte 4a dem freien Ende der langen Stützstrebe 8b der zweiten Gestellhälfte 4b zugewandt ist. Außerdem wird die ebenfalls vorgefertigte mäanderförmige Glühwendel 11 in die Fixiervorrichtung eingelegt. Dabei werden die einfach gewendelten Glühwendelenden 11a, 11b auf die langen Stützstreben 8a, 8b der Gestellhälften 4a, 4b aufgefädelt und die ungewendelten Abschnitte der Glühwendel 11 in die Wendelhalter 10a, 10b eingehängt. Danach werden die einfach gewendelten Abschnitte der Glühwendel 11 durch Auseinanderziehen der in der Fixiervorrichtung gelagerten Gestellhälften 4a, 4b, das heißt, durch Vergrößern des Abstandes zwischen den Stegen 7a, 7b, gespannt. Anschließend werden die beiden Gestellhälften 4a, 4b durch Verschweißen der planierten Enden ihrer Stützstreben 8a, 9a, 8b, 9b miteinander verbunden. Dabei wird das planierte Ende 13a der langen Stützstrebe 8a der ersten Gestellhälfte 4a mit dem planierten Ende der kurzen Stützstrebe 9b der zweiten Gestellhälfte 4b und das planierte Ende 14a der kurzen Stützstrebe 9a der ersten Gestellhälfte 4a mit dem planierten Ende der langen Stützstrebe 8b der zweiten Gestellhälfte 4b verschweißt. Hierfür eignen sich Laser- oder auch Widerstandsschweißung. Die auf die langen Stützstreben 8a, 8b aufgefädelten einfach gewendelten Glühwendelenden 11a, 11b werden ausgerichtet, an die Stützstreben 8a, 8b angedrückt und mittels Stromdurchgang, außerhalb der planierten Enden 13a an den Stützstreben 8a, 8b fixiert. Die am oberen Steg 7a überstehenden Enden der Stützstreben 8a, 9a werden gekürzt. Die am unteren Steg 7b überstehenden Enden der Stützstreben 8b, 9b werden jeweils mit einer Molybdänfolie 2, 3 verschweißt. Die beiden Molybdänfolien 2, 3 sind durch einen angeschweißten U-förmigen Molybdändraht 15 miteinander verbunden. Das so entstandene Gestell der Lampe ist in Figur 3 dargestellt. Es wird in den vorgefertigten Lampenkolben 1 eingeführt und ausgerichtet. Der Lampenkolben 1 wird dann in bekannter Weise über den Molybdänfolien 2, 3 dicht gequetscht und, üblicherweise über einen Pumpstengel, evakuiert und mit der Inertgas/Halogenmischung gefüllt. Nach dem gasdichten Einschmelzen der Molybdänfolien 2, 3 im Lampenkolbenfuß 1a wird der U-förmige Molybdändraht 15 aufgetrennt, so daß seine Schenkel nun die Stromzuführungen 5, 6 (Figur 4) bilden. Anschließend erfolgt das Sockeln der Lampe in bekannter Weise.For helical mounting, two prefabricated frame halves 4a, 4b are placed in a fixing device (not shown) in such a way that the webs 7a, 7b run parallel and the free end of the long support strut 8a of the first frame half 4a the free end of the short support strut 9b of the second frame half 4b and the free end of the short support strut 9a of the first frame half 4a faces the free end of the long support strut 8b of the second frame half 4b. In addition, the likewise prefabricated meandering filament 11 is inserted into the fixing device. The simply coiled filament ends 11a, 11b are threaded onto the long support struts 8a, 8b of the frame halves 4a, 4b and the uncoiled sections of the filament 11 are suspended in the filament holders 10a, 10b. Then the simply coiled sections of the incandescent filament 11 are stretched by pulling apart the frame halves 4a, 4b stored in the fixing device, that is to say by increasing the distance between the webs 7a, 7b. The two frame halves 4a, 4b are then connected to one another by welding the leveled ends of their support struts 8a, 9a, 8b, 9b. The leveled end 13a of the long support strut 8a of the first frame half 4a with the leveled end of the short support strut 9b of the second frame half 4b and the leveled end 14a of the short support strut 9a of the first frame half 4a with the leveled end of the long support strut 8b of the second frame half 4b welded. Laser or resistance welding are suitable for this. The single-coil filament ends 11a, 11b threaded onto the long support struts 8a, 8b are aligned, pressed onto the support struts 8a, 8b and fixed to the support struts 8a, 8b outside the leveled ends 13a by means of current passage. The ends of the support struts protruding from the upper web 7a 8a, 9a are shortened. The ends of the support struts 8b, 9b projecting at the lower web 7b are each welded to a molybdenum foil 2, 3. The two molybdenum foils 2, 3 are connected to one another by a welded-on U-shaped molybdenum wire 15. The resulting frame of the lamp is shown in Figure 3. It is inserted and aligned in the prefabricated lamp bulb 1. The lamp bulb 1 is then squeezed tightly in a known manner over the molybdenum foils 2, 3 and, usually via a pump handle, is evacuated and filled with the inert gas / halogen mixture. After the gas-tight melting of the molybdenum foils 2, 3 in the lamp bulb base 1a, the U-shaped molybdenum wire 15 is cut open, so that its legs now form the current leads 5, 6 (FIG. 4). The lamp is then socketed in a known manner.

Claims (10)

Verfahren zur Herstellung einer elektrischen Glühlampe mit einer Glühwendel (11) und einem Lampenkolben (1) sowie mit einem rahmenartigen Gestell (4a, 4b) zur Fixierung der Glühwendel (11) innerhalb des Lampenkolbens (1), wobei das Verfahren die Glühwendelmontage in einem rahmenartigen Gestell (4a, 4b) einschließt, das im wesentlichen von zwei aus einem elektrisch isolierenden Material bestehenden und mit Wendelhaltern (10a, 10b) versehenen Stegen (7a, 7b) gebildet wird, die mittels Stützstreben (8a, 8b, 9a, 9b) miteinander verbunden sind,
dadurch gekennzeichnet, daß die Glühwendelmontage folgende Verfahrensschritte enthält: - Herstellung zweier im wesentlichen identischer Gestellhälften (4a, 4b), wobei jede Gestellhälfte (4a, 4b) einen Steg (7a, 7b) aus einem elektrisch isolierenden Material mit darin verankerten Wendelhaltern (10a, 10b) und mit jeweils zwei an dem Steg (7a, 7b) befestigten Stützstreben (8a, 8b, 9a, 9b) aufweist, - Fixieren der vorgefertigten Gestellhälften (4a, 4b) in einer Fixiervorrichtung, so daß die Stege (7a, 7b) im wesentlichen parallel ausgerichtet sind und die freien Enden der in den beiden Stegen befestigten Stützstreben (8a, 8b, 9a, 9b) einander zugewandt sind, - Auffädeln des ersten gewendelten Glühwendelendes (11a) auf das freie Ende einer Stützstrebe (8a) der ersten Gestellhälfte (4a), - Auffädeln des zweiten gewendelten Glühwendelendes (11b) auf das freie Ende einer Stützstrebe (8b) der zweiten Gestellhälfte (4b), - Einhängen der Glühwendel (11) in die Wendelhalter (10a, 10b) und Spannen der Glühwendel (11) in der Fixiervorrichtung durch Vergrößern des Abstandes zwischen den beiden Stegen (7a, 7b), - Verschweißen der Stützstreben (8a, 9a) der ersten Gestellhälfte (4a) mit den Stützstreben (8b, 9b) der zweiten Gestellhälfte (4b), - Positionieren und Befestigen der aufgefädelten Glühwendelenden (11a, 11b) an den entsprechenden Stützstreben (8a, 8b). Method for producing an electric incandescent lamp with an incandescent filament (11) and a lamp bulb (1) and with a frame-like frame (4a, 4b) for fixing the incandescent filament (11) within the lamp bulb (1), the method comprising the filament mounting in a frame-like manner Includes frame (4a, 4b), which is essentially formed by two webs (7a, 7b) made of an electrically insulating material and provided with coil holders (10a, 10b), which are connected to one another by means of support struts (8a, 8b, 9a, 9b) are connected,
characterized in that the incandescent filament assembly contains the following process steps: - Production of two essentially identical frame halves (4a, 4b), each frame half (4a, 4b) having a web (7a, 7b) made of an electrically insulating material with coil holders (10a, 10b) anchored therein and with two each on the web ( 7a, 7b) has attached support struts (8a, 8b, 9a, 9b), - Fixing the prefabricated frame halves (4a, 4b) in a fixing device so that the webs (7a, 7b) are aligned substantially parallel and the free ends of the support struts (8a, 8b, 9a, 9b) fastened in the two webs face each other are, Threading the first coiled filament end (11a) onto the free end of a support strut (8a) of the first frame half (4a), Threading the second coiled filament end (11b) onto the free end of a support strut (8b) of the second frame half (4b), - hanging the filament (11) in the filament holder (10a, 10b) and tensioning the filament (11) in the fixing device by increasing the distance between the two webs (7a, 7b), Welding the support struts (8a, 9a) of the first frame half (4a) to the support struts (8b, 9b) of the second frame half (4b), - Positioning and attaching the threaded filament ends (11a, 11b) to the corresponding support struts (8a, 8b). Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Stege (7a, 7b) aus Quarzglas bestehen.Method according to claim 1, characterized in that the webs (7a, 7b) consist of quartz glass. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die derselben Gestellhälfte (4a, 4b) angehörenden Stützstreben (8a, 9a; 8b, 9b) in den zu dieser Gestellhälfte (4a, 4b) gehörenden Steg (7a, 7b) eingeschmolzen sind.Method according to claims 1 and 2, characterized in that the support struts (8a, 9a; 8b, 9b) belonging to the same frame half (4a, 4b) are melted into the web (7a, 7b) belonging to this frame half (4a, 4b) . Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gestellhälften (4a, 4b) jeweils zwei unterschiedlich lange, aus einem hochschmelzenden Metall bestehende Stützstreben (8a, 8b, 9a, 9b) aufweisen.Method according to Claim 1, characterized in that the frame halves (4a, 4b) each have two support struts (8a, 8b, 9a, 9b) made of a high-melting metal. Verfahren nach den Ansprüchen 1 und 4, dadurch gekennzeichnet, daß das erste gewendelte Glühwendelende (11a) auf die lange Stützstrebe (8a) der ersten Gestellhälfte (4a) und das zweite gewendelte Glühwendelende (11b) auf die lange Stützstrebe (8b) der zweiten Gestellhälfte (4b) aufgefädelt wird.Method according to claims 1 and 4, characterized in that the first coiled filament end (11a) on the long support strut (8a) of the first frame half (4a) and the second coiled filament end (11b) on the long support strut (8b) of the second frame half (4b) is threaded. Verfahren nach den Ansprüchen 1, 4 und 3, dadurch gekennzeichnet, daß die lange Stützstrebe (8a) der ersten Gestellhälfte (4a) mit der kurzen Stützstrebe (9b) der zweiten Gestellhälfte (4b) und die kurze Stützstrebe (9a) der ersten Gestellhälfte (4a) mit der langen Stützstrebe (8b) der zweiten Gestellhälfte (4b) verschweißt wird.Method according to claims 1, 4 and 3, characterized in that the long support strut (8a) of the first frame half (4a) with the short support strut (9b) of the second frame half (4b) and the short support strut (9a) of the first frame half (4a) 4a) is welded to the long support strut (8b) of the second frame half (4b). Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Enden der Stützstreben (8a,8b, 9a, 9b) planiert sind, und die planierten Enden (13a, 14a) der Stützstreben (8a, 8b, 9a, 9b) miteinander verschweißt sind.A method according to claim 6, characterized in that the ends of the support struts (8a, 8b, 9a, 9b) are leveled and the leveled ends (13a, 14a) of the support struts (8a, 8b, 9a, 9b) are welded together. Elektrische Glühlampe, die gemäß des Verfahrens nach Anspruch 1 gefertigt wurde.Electric incandescent lamp, which was manufactured according to the method of claim 1. Elektrische Glühlampe nach Anspruch 8, dadurch gekennzeichnet, daß das Gestell aus zwei vorgeformten, im wesentlichen identischen Gestellhälften (4a, 4b) besteht, wobei jede Gestellhälfte (4a, 4b) einen mit Wendelhaltern (10a, 10b) versehenen, aus einem elektrisch isolierenden Material bestehenden Steg (7a, 7b) und mindestens zwei darin eingeschmolzene Stützstreben (8a, 9a; 8b, 9b) aufweist, und wobei die beiden Gestellhälften (4a, 4b) durch Verschweißen ihrer Stützstreben (8a, 9a; 8b, 9b) zu einem rahmenartigen Gestell (4a, 4b) verbunden sind.Electric incandescent lamp according to claim 8, characterized in that the frame consists of two preformed, essentially identical frame halves (4a, 4b), each frame half (4a, 4b) being provided with a filament holder (10a, 10b) made of an electrically insulating material existing web (7a, 7b) and at least two fused therein Has support struts (8a, 9a; 8b, 9b), and wherein the two frame halves (4a, 4b) are connected to a frame-like frame (4a, 4b) by welding their support struts (8a, 9a; 8b, 9b). Elektrische Glühlampe nach Anspruch 8, dadurch gekennzeichnet, daß die Glühwendel (11) einen flächenhaften Leuchtkörper bildet.Electric incandescent lamp according to claim 8, characterized in that the incandescent filament (11) forms a planar luminous element.
EP96109538A 1995-06-29 1996-06-13 Method for assembling an electric incandescent lamp and incandescent lamp fabricated according to said method Expired - Lifetime EP0751550B1 (en)

Applications Claiming Priority (2)

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DE19523146 1995-06-29
DE19523146A DE19523146A1 (en) 1995-06-29 1995-06-29 Method of manufacturing an electric light bulb and an electric light bulb made by this method

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EP0751550B1 EP0751550B1 (en) 1999-02-03

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JP (1) JPH0917397A (en)
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DE3136961A1 (en) * 1981-09-17 1983-03-31 Heinrich 4600 Dortmund Guth Cold-starting fluorescent lamp having a single-pin cap, and a method for its production
US4578616A (en) * 1984-06-07 1986-03-25 General Electric Company Tungsten halogen incandescent lamp having an improved mounting structure

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DE102007049543A1 (en) 2007-10-16 2009-04-23 Osram Gesellschaft mit beschränkter Haftung Filament lamp i.e. halogen filament lamp, for use in vehicle headlight, has spiral-wound filament fixed over quartz glass holding element, where holding element is partly dyed by adding additives into glass melt

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DE59601249D1 (en) 1999-03-18
EP0751550B1 (en) 1999-02-03
JPH0917397A (en) 1997-01-17
DE19523146A1 (en) 1997-01-02
CA2178158A1 (en) 1996-12-30
US5680009A (en) 1997-10-21

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