WO1996024157A1 - Electric incandescent lamp and process for producing electric incandescent lamps - Google Patents

Electric incandescent lamp and process for producing electric incandescent lamps Download PDF

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Publication number
WO1996024157A1
WO1996024157A1 PCT/DE1996/000100 DE9600100W WO9624157A1 WO 1996024157 A1 WO1996024157 A1 WO 1996024157A1 DE 9600100 W DE9600100 W DE 9600100W WO 9624157 A1 WO9624157 A1 WO 9624157A1
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WO
WIPO (PCT)
Prior art keywords
filament
power supply
tungsten
lamp
incandescent
Prior art date
Application number
PCT/DE1996/000100
Other languages
German (de)
French (fr)
Inventor
Rolf Minder
Rüdiger Klam
Rolf Kiesel
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen 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.)
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Application filed by Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH filed Critical Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
Priority to DE59601772T priority Critical patent/DE59601772D1/en
Priority to EP96900847A priority patent/EP0807316B1/en
Priority to HU9800336A priority patent/HU220536B1/en
Priority to JP8523161A priority patent/JPH11502663A/en
Publication of WO1996024157A1 publication Critical patent/WO1996024157A1/en

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Classifications

    • 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
    • H01K1/02—Incandescent bodies
    • H01K1/16—Electric connection thereto

Definitions

  • the invention relates to an electric incandescent lamp and a method for producing an electric incandescent lamp according to the preamble of claim 1.
  • Such an incandescent lamp is disclosed, for example, in German published patent application DE 31 41 330.
  • the incandescent lamp described in this publication has an incandescent filament made of tungsten, the simply coiled ends of which are hard-soldered to a power supply line, preferably made of molybdenum.
  • a power supply line preferably made of molybdenum.
  • the power supply lines are melted at their ends by means of a soldering electrode, so that the melt runs between the turns of the single-ended filament ends. After the melt has solidified, the incandescent filament and the power supply lines are reliably connected to one another.
  • the electric light bulbs according to the invention have tungsten filaments with uncoiled ends, each of which is welded or soldered to the melted and re-solidified end of a power supply.
  • the power supplies consist of a metal that has a lower melting temperature than the tungsten of the filament. This ensures that only the metal of the power supply melts when welding the end of the filament and the power supply.
  • the tungsten of the filament does not melt and does not recrystallize during the welding or soldering process.
  • the power supply lines for the incandescent filament preferably consist of mol b-dän, which is particularly well suited for use in lamp bulbs made of quartz glass or for melting in lamp bulbs made of hard glass.
  • the ends of the power supply lines which are advantageously hook-shaped, are preferably locally heated and melted briefly by means of a LASER under a protective gas atmosphere.
  • the melt flows around the uncoiled incandescent and solidifies. After the melt has solidified, the filament ends are completely embedded in the metal of the power supply lines and the welding or soldering points between the filament and the power supply lines have no appreciable electrical contact resistance.
  • This type of filament holder is particularly well suited for low-wattage low-voltage incandescent lamps, in particular also for low-wattage low-voltage halogen incandescent lamps.
  • Figure 1 is a schematic representation of an incandescent lamp according to the preferred embodiment 2 shows a plan view of the power supply lines and filament (shown schematically) of the incandescent lamp according to the exemplary embodiment in FIG. 1 before the power supply lines are welded or soldered to the filament ends
  • FIG. 3 shows a side view of the hook-shaped bent end of a power supply with the glow coil end hooked or hooked into it (in a schematic representation)
  • the incandescent lamp according to the invention shown schematically in FIG. 1 is a low-wattage low-voltage halogen incandescent lamp which is used as a light source for headlights or tail lights of two-wheelers, such as, for. B. bicycle or moped is used.
  • the nominal voltage of the lamp is approximately 6 V and its electrical power consumption is less than 3 W.
  • This lamp has a lamp bulb 1 made of hard glass, in particular made of borosilicate glass, which is sealed gas-tight by means of a pinch seal. From the lamp bulb 1, two current leads 2, 3, which are melted down in a gas-tight manner in the pinch seal 1 a, are led out of molybdenum.
  • a single-coiled filament 4 made of tungsten with perpendicular ends to the lamp axis and uncoiled ends 4a, 4b.
  • the uncoiled filament ends 4a, 4b are each welded or soldered to the end 2a, 3a of the power supply lines 2, 3 protruding into the interior of the lamp bulb 1.
  • inert gas eg argon, krypton or xenon
  • a small amount of a halogen compound which is gaseous during lamp operation.
  • a lamp bulb 1 made of hard glass, a single-coiled tungsten filament 4 with uncoiled ends 4a, 4b and two current leads 2, 3 made of molybdenum wire are used.
  • One end 2 a, 3 a of the power supply lines 2, 3 is hook-shaped.
  • the diameter of the power supply lines 2, 3 is approximately 0.5 mm and the diameter of the tungsten wire of the filament is approximately 0.05 mm.
  • the angled sections 2a, 3a of the power supply ends have a length of approximately 0.5 mm to 1.0 mm.
  • the filament 4 with the current leads 2, 3 are fixed in a holding device (not shown) and aligned so that the filament ends 4a, 4b and the current leads 2, 3 intersect and the uncoiled ends 4a, 4b of the tungsten filament 4 into the hook-shaped Power supply ends 2a, 3a are hooked or hooked. Then the angled section of the hook-shaped ends 2a, 3a of the power supply lines 2, 3 is briefly heated to the melting point under a protective gas atmosphere with the aid of a LASER. The molybdenum melt flows around the uncoiled tungsten filament ends 4a, 4b and solidifies. After the melt solidifies, the coil ends 4a, 4b are completely embedded in the molybdenum of the current leads 2, 3. Thereafter, the incandescent filament 4 is inserted into the lamp bulb 1 and this is squeezed tightly in a known manner above the current leads 2, 3. The lamp bulb 1 is evacuated via a pump stem 5 and filled with inert gas.
  • the invention is not limited to the exemplary embodiment described in more detail above.
  • the manufacturing method according to the invention also works if the ends 2a, 3a of the power supply lines 2, 3 are not bent in a hook shape. It is already sufficient if the uncoiled filament ends 4a, 4b and the current leads 2, 3 are fixed and aligned in the holding device in such a way that they intersect.
  • the ends 2a, 3a of the power supply lines 2, 3 should each protrude about 0.5-1.0 mm beyond the respective spiral end 4a, 4b.
  • the protruding current supply ends 2a, 3a are then melted with the aid of a LASER under a protective gas atmosphere, so that the molybdenum melt wets and encloses the spiral ends 4a, 4b. After the melt solidifies, the coil ends 4a, 4b are largely embedded in the molybdenum of the current leads 2, 3.
  • the invention can also be applied to incandescent lamps with incandescent filaments oriented axially (lying in the lamp axis).
  • the lamp bulb 1 can also consist of quartz glass and be closed by means of a known molybdenum foil melting technique.
  • the invention can also be applied to incandescent lamps without halogen filling.
  • the power supply lines can also consist of a copper sheathed wire, nickel or iron wire.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

An electric incandescent lamp is disclosed, in particular a low-watt, low-voltage incandescent lamp, as well as a process for producing the same. The lamp has a helical tungsten filament (4) with straight ends (4a, 4b) that are each soldered or welded to a current supply (2, 3). The current supplies (2, 3) are made of a metal with a lower fusion temperature than tungsten. In order to solder or weld the incandescent helical filament (4) to the current supplies (2, 3), the latter are arranged in such a way that the straight ends (4a, 4b) of the helical filament and the preferably hook-shaped ends (2a, 3a) of the current supplies cross each other. The ends (2a, 3a) of the current supplies are quickly heated up to their fusion temperature by a laser. The molten mass flows over the corresponding end (4a, 4b) of the helical filament, so that after the molten mass solidifies the ends of the helical filament are embedded in the metal of the current supplies.

Description

Elektrische Glühlampe und Verfahren zur Herstellung einer elektrischen GlühlampeElectric light bulb and method of making an electric light bulb
Die Erfindung betrifft eine elektrische Glühlampe sowie ein Verfahren zur Herstellung einer elektrischen Glühlampe gemäß dem Oberbegriff des Pa¬ tentanspruchs 1.The invention relates to an electric incandescent lamp and a method for producing an electric incandescent lamp according to the preamble of claim 1.
Eine derartige Glühlampe ist beispielsweise in der deutschen Offenlegungs- schrift DE 31 41 330 offenbart. Die in dieser Druckschrift beschriebene Glühlampe besitzt eine Glühwendel aus Wolfram, deren einfach gewendelte Enden mit jeweils einer, vorzugsweise aus Molybdän bestehenden Stromzu¬ führung hartverlötet sind. Zur Herstellung der Hartlötverbindung werden die Stromzuführungen an ihren Enden mittels einer Lötelektrode geschmol¬ zen, so daß die Schmelze zwischen die Windungen der einfach gewendelten Glühwendelenden läuft. Nach dem Erstarren der Schmelze sind die Glühwendel und die Stromzuführungen zuverlässig miteinander verbun¬ den. Nachteilig wirkt sich hier allerdings aus, daß die mit den Stromzufüh- rungen verschweißten Glühwendelenden gewendelt sind, da das Verlöten der gewendelten Glühwendelenden mit den Enden der Stromzuführungen zu einer unerwünschten Torsion der Glühwendel und damit zu Ungenauig- keiten bei der Positionierung der Glühwendel im Lampenkolben führen kann.Such an incandescent lamp is disclosed, for example, in German published patent application DE 31 41 330. The incandescent lamp described in this publication has an incandescent filament made of tungsten, the simply coiled ends of which are hard-soldered to a power supply line, preferably made of molybdenum. To produce the brazed connection, the power supply lines are melted at their ends by means of a soldering electrode, so that the melt runs between the turns of the single-ended filament ends. After the melt has solidified, the incandescent filament and the power supply lines are reliably connected to one another. The disadvantage here, however, is that the filament ends welded to the current leads are coiled, since the soldering of the coiled filament ends to the ends of the current leads leads to undesired torsion of the filament and thus to inaccuracies in the positioning of the filament in the lamp bulb can.
Es ist die Aufgabe der Erfindung, eine elektrische Glühlampe mit einer ver¬ besserten Glühwendelhalterung sowie ein Herstellungsverfahren für eine derartige Glühlampe bereitzustellen.It is the object of the invention to provide an electric incandescent lamp with an improved incandescent filament holder and a production method for such an incandescent lamp.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkma¬ le des Patentanspruchs 1 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen beschrieben. Die erfindungsgemäßen elektrischen Glühlampen besitzen Glühwendeln aus Wolfram mit ungewendelten Enden, die jeweils mit dem aufgeschmolzenen und wiedererstarrten Ende einer Stromzuführung verschweißt oder verlötet sind. Die Stromzuführungen bestehen aus einem Metall, das eine tiefere Schmelztemperatur als das Wolfram der Glühwendel aufweist. Dadurch wird gewährleistet, daß beim Verschweißen bzw. Verlöten von Glühwendel¬ ende und Stromzuführung nur das Metall der Stromzuführung schmilzt. Das Wolfram der Glühwendel hingegen schmilzt nicht und rekristallisiert auch nicht während des Schweiß- bzw. Lötvorganges. Da die mit den Stromzuführungen verschweißten oder verlöteten Enden der Glühwendel ungewendelt sind, kann durch den Schweiß- oder Lötvorgang keine Torsion der Glühwendel hervorgerufen werden, der zu Ungenauigkeiten bei der Positionierung der Glühwendel im Lampenkolben führen könnte. Die Stromzuführungen für die Glühwendel bestehen vorzugsweise aus Mol b- dän, das besonders gut für die Verwendung in aus Quarzglas bzw. für die Einschmelzung in aus Hartglas gefertigten Lampenkolben geeignet ist.This object is achieved according to the invention by the characterizing features of patent claim 1. Particularly advantageous embodiments of the invention are described in the subclaims. The electric light bulbs according to the invention have tungsten filaments with uncoiled ends, each of which is welded or soldered to the melted and re-solidified end of a power supply. The power supplies consist of a metal that has a lower melting temperature than the tungsten of the filament. This ensures that only the metal of the power supply melts when welding the end of the filament and the power supply. The tungsten of the filament, on the other hand, does not melt and does not recrystallize during the welding or soldering process. Since the ends of the incandescent filament which are welded or soldered to the power supply lines are uncoiled, the welding or soldering process cannot cause the incandescent filament to twist, which could lead to inaccuracies in the positioning of the incandescent filament in the lamp bulb. The power supply lines for the incandescent filament preferably consist of mol b-dän, which is particularly well suited for use in lamp bulbs made of quartz glass or for melting in lamp bulbs made of hard glass.
Zur Herstellung der erfindungsgemäßen Glühlampe werden die vorteihaf- terweise hakenförmig gebogenen Enden der Stromzuführungen Vorzugs- weise mittels eines LASER's unter Schutzgasatmosphäre kurzzeitig lokal erhitzt und geschmolzen. Dabei fließt die Schmelze um die ungewendelten Glüh wendelenden und erstarrt. Nach dem Erstarren der Schmelze sind die Glühwendelenden vollständig in dem Metall der Stromzuführungen einge¬ bettet und die Schweiß- bzw. Lötstellen zwischen der Glühwendel und den Stromzuführungen besitzen keinen nennenswerten elektrischen Über¬ gangswiderstand. Diese Art der Wendelhalterung eignet sich besonders gut für kleinwattige Niedervolt-Glühlampen, insbesondere auch für kleinwatti¬ ge Niedervolt-Halogenglühlampen.To produce the incandescent lamp according to the invention, the ends of the power supply lines, which are advantageously hook-shaped, are preferably locally heated and melted briefly by means of a LASER under a protective gas atmosphere. The melt flows around the uncoiled incandescent and solidifies. After the melt has solidified, the filament ends are completely embedded in the metal of the power supply lines and the welding or soldering points between the filament and the power supply lines have no appreciable electrical contact resistance. This type of filament holder is particularly well suited for low-wattage low-voltage incandescent lamps, in particular also for low-wattage low-voltage halogen incandescent lamps.
Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungs¬ beispiels näher erläutert. Es zeigen:The invention is explained in more detail below on the basis of a preferred embodiment. Show it:
Figur 1 Eine schematische Darstellung einer Glühlampe gemäß des bevor¬ zugten Ausführungsbeispiels Figur 2 Eine Draufsicht auf Stromzuführungen und Glühwendel (schema¬ tisch dargestellt) der Glühlampe gemäß des Ausführungsbeispiels in Figur 1 vor dem Verschweißen bzw. Verlöten der Stromzufüh¬ rungen mit den GlühwendelendenFigure 1 is a schematic representation of an incandescent lamp according to the preferred embodiment 2 shows a plan view of the power supply lines and filament (shown schematically) of the incandescent lamp according to the exemplary embodiment in FIG. 1 before the power supply lines are welded or soldered to the filament ends
Figur 3 Eine Seitenansicht des hakenförmig gebogenen Endes einer Strom¬ zuführung mit dem darin eingehakten bzw. eingehängten Glüh¬ wendelende (in schematischer Darstellung)FIG. 3 shows a side view of the hook-shaped bent end of a power supply with the glow coil end hooked or hooked into it (in a schematic representation)
Bei der in der Figur 1 schematisch dargestellten erfindungsgemäßen Glüh¬ lampe handelt es sich um eine kleinwattige Niedervolt-Halogenglühlampe, die als Lichtquelle für Scheinwerfer oder Schlußlicht von Zweirädern, wie z. B. Fahrrad oder Mofa, verwendet wird. Die Nennspannung der Lampe beträgt ca. 6 V und ihre elektrische Leistungsaufnahme ist kleiner als 3 W. Diese Lampe besitzt einen Lampenkolben 1 aus Hartglas, insbesondere aus Borsilikatglas, der mittels einer Quetschdichtung la gasdicht verschlossen ist. Aus dem Lampenkolben 1 sind zwei gasdicht in der Quetschdichtung la eingeschmolzene, parallel verlaufende Stromzuführungen 2, 3 aus Molybdän herausgeführt. Innerhalb des Lampenkolbens 1 befindet sich eine einfach gewendelte, senkrecht zur Lampenachse ausgerichtete Glühwendel 4 aus Wolfram mit ungewendelten Enden 4a, 4b. Die ungewendelten Glühwendel¬ enden 4a, 4b sind jeweils dem in den Innenraum des Lampenkolbens 1 hin¬ einragenden Ende 2a, 3a der Stromzuführungen 2, 3 verschweißt oder verlö¬ tet. Im Innenraum des Lampenkolbens 1 befinden sich Inertgas (z. B. Argon, Krypton oder Xenon) und eine geringe Menge einer während des Lampen¬ betriebes gasförmigen Halogenverbindung.The incandescent lamp according to the invention shown schematically in FIG. 1 is a low-wattage low-voltage halogen incandescent lamp which is used as a light source for headlights or tail lights of two-wheelers, such as, for. B. bicycle or moped is used. The nominal voltage of the lamp is approximately 6 V and its electrical power consumption is less than 3 W. This lamp has a lamp bulb 1 made of hard glass, in particular made of borosilicate glass, which is sealed gas-tight by means of a pinch seal. From the lamp bulb 1, two current leads 2, 3, which are melted down in a gas-tight manner in the pinch seal 1 a, are led out of molybdenum. Within the lamp bulb 1 there is a single-coiled filament 4 made of tungsten with perpendicular ends to the lamp axis and uncoiled ends 4a, 4b. The uncoiled filament ends 4a, 4b are each welded or soldered to the end 2a, 3a of the power supply lines 2, 3 protruding into the interior of the lamp bulb 1. In the interior of the lamp bulb 1 there are inert gas (eg argon, krypton or xenon) and a small amount of a halogen compound which is gaseous during lamp operation.
Zur Herstellung der Halogen-Glühlampe gemäß des in der Figur 1 abgebil¬ deten Ausführungsbeispiels werden ein Lampenkolben 1 aus Hartglas, eine einfach gewendelte Wolframwendel 4 mit ungewendelten Enden 4a, 4b und zwei Stromzuführungen 2, 3 aus Molybdändraht verwendet. Jeweils ein En¬ de 2a, 3a der Stromzuführungen 2, 3 ist hakenförmig ausgebildet. Der Durchmesser der Stromzuführungen 2, 3 beträgt ca. 0,5 mm und der Durchmesser des Wol ramdrahtes der Glühwendel beträgt ca. 0,05 mm. Die abgewinkelten Abschnitte 2a, 3a der Stromzuführungsenden haben eine Länge von ungefähr 0,5 mm bis 1,0 mm. Zum Verschweißen bzw. Verlöten der Glühwendel 4 mit den Stromzuführungen 2, 3 werden diese in einer Haltevorrichtung (nicht abgebildet) fixiert und so ausgerichtet, daß sich die Glühwendelenden 4a, 4b und die Stromzuführungen 2, 3 kreuzen und die ungewendelten Enden 4a, 4b der Wolframwendel 4 in die hakenförmigen Stromzuführungsenden 2a, 3a eingehakt bzw. eingehängt sind. Danach wird der abgewinkelte Abschnitt der hakenförmigen Enden 2a, 3a der Stromzu¬ führungen 2, 3 unter Schutzgasatmosphäre mit Hilfe eines LASER's kurzzei¬ tig bis auf den Schmelzpunkt erhitzt. Dabei umfließt die Molybdänschmelze die ungewendelten Wolframwendelenden 4a, 4b und erstarrt. Nach dem Erstarren der Schmelze sind die Wendelenden 4a, 4b vollständig in dem Molybdän der Stromzuführungen 2, 3 eingebettet. Danach wird die Glühwendel 4 in den Lampenkolben 1 eingeführt und dieser über den Stromzuführungen 2, 3 in bekannter Weise dicht gequetscht. Über einen Pumpstengel 5 wird der Lampenkolben 1 evakuiert und mit Inertgas gefüllt.To manufacture the halogen incandescent lamp according to the exemplary embodiment depicted in FIG. 1, a lamp bulb 1 made of hard glass, a single-coiled tungsten filament 4 with uncoiled ends 4a, 4b and two current leads 2, 3 made of molybdenum wire are used. One end 2 a, 3 a of the power supply lines 2, 3 is hook-shaped. The diameter of the power supply lines 2, 3 is approximately 0.5 mm and the diameter of the tungsten wire of the filament is approximately 0.05 mm. The angled sections 2a, 3a of the power supply ends have a length of approximately 0.5 mm to 1.0 mm. For welding or soldering the filament 4 with the current leads 2, 3 are fixed in a holding device (not shown) and aligned so that the filament ends 4a, 4b and the current leads 2, 3 intersect and the uncoiled ends 4a, 4b of the tungsten filament 4 into the hook-shaped Power supply ends 2a, 3a are hooked or hooked. Then the angled section of the hook-shaped ends 2a, 3a of the power supply lines 2, 3 is briefly heated to the melting point under a protective gas atmosphere with the aid of a LASER. The molybdenum melt flows around the uncoiled tungsten filament ends 4a, 4b and solidifies. After the melt solidifies, the coil ends 4a, 4b are completely embedded in the molybdenum of the current leads 2, 3. Thereafter, the incandescent filament 4 is inserted into the lamp bulb 1 and this is squeezed tightly in a known manner above the current leads 2, 3. The lamp bulb 1 is evacuated via a pump stem 5 and filled with inert gas.
Die Erfindung beschränkt sich nicht auf das oben näher beschriebene Aus¬ führungsbeispiel. Das erfindungsgemäße Herstellungsverfahren funktioniert auch, wenn die Enden 2a, 3a der Stromzuführungen 2, 3 nicht hakenförmig gebogen sind. Es genügt bereits, wenn die ungewendelten Glühwendelen- den 4a, 4b und die Stromzuführungen 2, 3 derart in der Haltevorrichtung fixiert und ausgerichtet sind, daß sie sich kreuzen. Die Enden 2a, 3a der Stromzuführungen 2, 3 sollten dabei jeweils ca 0,5-1,0 mm über das betref¬ fende Wendelende 4a, 4b überstehen. Die überstehenden Stromzuführungs¬ enden 2a, 3a werden dann mit Hilfe eines LASER's unter Schutzgasatmo- Sphäre geschmolzen, so daß die Molybdänschmelze die Wendelenden 4a, 4b benetzt und umschließt. Nach dem Erstarren der Schmelze sind die Wendel¬ enden 4a, 4b weitgehend in dem Molybdän der Stromzuführungen 2, 3 ein¬ gebettet.The invention is not limited to the exemplary embodiment described in more detail above. The manufacturing method according to the invention also works if the ends 2a, 3a of the power supply lines 2, 3 are not bent in a hook shape. It is already sufficient if the uncoiled filament ends 4a, 4b and the current leads 2, 3 are fixed and aligned in the holding device in such a way that they intersect. The ends 2a, 3a of the power supply lines 2, 3 should each protrude about 0.5-1.0 mm beyond the respective spiral end 4a, 4b. The protruding current supply ends 2a, 3a are then melted with the aid of a LASER under a protective gas atmosphere, so that the molybdenum melt wets and encloses the spiral ends 4a, 4b. After the melt solidifies, the coil ends 4a, 4b are largely embedded in the molybdenum of the current leads 2, 3.
Die Erfindung kann auch auf Glühlampen mit axial (in der Lampenachse liegenden) ausgerichteten Glühwendeln angewandt werden. Ferner kann der Lampenkolben 1 auch aus Quarzglas bestehen und mittels einer bekann¬ ten Molybdänfolieneinschmelzungstechnik verschlossen sein. Außerdem kann die Erfindung auch auf Glühlampen ohne Halogenfüllung angewandt werden. In diesem Fall können die Stromzuführungen auch aus einem Kupfermanteldraht, Nickel- oder Eisendraht bestehen. The invention can also be applied to incandescent lamps with incandescent filaments oriented axially (lying in the lamp axis). Furthermore, the lamp bulb 1 can also consist of quartz glass and be closed by means of a known molybdenum foil melting technique. In addition, the invention can also be applied to incandescent lamps without halogen filling. In this case, the power supply lines can also consist of a copper sheathed wire, nickel or iron wire.

Claims

Patentansprüche claims
1. Elektrische Glühlampe mit einem Lampenkolben (1), in dem minde¬ stens eine Glühwendel (4) aus Wolfram angeordnet ist, wobei die En¬ den (4a, 4b) der Glühwendel (4) jeweils mit einer Stromzuführung (2, 3) verschweißt oder verlötet sind, und die Stromzuführungen (2, 3) aus einem Metall bestehen, das eine tiefere Schmelztemperatur als das1. Electric incandescent lamp with a lamp bulb (1) in which at least one filament (4) made of tungsten is arranged, the ends (4a, 4b) of the filament (4) each having a power supply (2, 3) are welded or soldered, and the power leads (2, 3) are made of a metal that has a lower melting temperature than that
Wolfram der Glühwendel (4) besitzt, dadurch gekennzeichnet, daß die mindestens eine Glühwendel (4) un- gewendelte Enden (4a, 4b) besitzt, die jeweils mit dem geschmolzenen und wiedererstarrten Ende (2a, 3a) einer Stromzuführung (2, 3) ver- schweißt bzw. verlötet sind.Tungsten of the incandescent filament (4), characterized in that the at least one incandescent filament (4) has uncoiled ends (4a, 4b), each with the molten and re-solidified end (2a, 3a) of a power supply (2, 3) are welded or soldered.
2. Elektrische Glühlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Stromzuführungen (2, 3) aus Molybdän bestehen.2. Electric light bulb according to claim 1, characterized in that the current leads (2, 3) consist of molybdenum.
3. Elektrische Glühlampe nach Anspruch 1, dadurch gekennzeichnet, daß die mindestens eine Glühwendel (4) einfach gewendelt ist.3. Electric light bulb according to claim 1, characterized in that the at least one filament (4) is simply coiled.
4. Verfahren zur Herstellung einer elektrischen Glühlampe gemäß des Anspruchs 1, dadurch gekennzeichnet, daß das Herstellungsverfahren folgende Fertigungsschritte enthält:4. A method for producing an electric light bulb according to claim 1, characterized in that the manufacturing method includes the following manufacturing steps:
- Bereitstellen zweier Stromzuführungsdrähte (2, 3), die aus einem Metall bestehen, das eine tiefere Schmelztemperatur als Wolfram besitzt,Provision of two power supply wires (2, 3) which consist of a metal which has a lower melting temperature than tungsten,
- Bereitstellen einer Glühwendel (4) aus Wolfram mit ungewendelten Enden (4a, 4b),- Providing a tungsten filament (4) with uncoiled ends (4a, 4b),
- Ausrichten und Fixieren der Glühwendel (4) und der Stromzufüh¬ rungsdrähte (2, 3), so daß sich die ungewendelten Glühwendelenden (4a, 4b) und die Stromzuführungen (2, 3) kreuzen,- Aligning and fixing the filament (4) and the current supply wires (2, 3) so that the uncoiled filament ends (4a, 4b) and the current leads (2, 3) intersect,
- Erhitzen der Stromzuführungsenden (2a, 3a), so daß das aufge- schmolzene Metall der Stromzuführungen (2, 3) um die ungewen¬ delten Glühwendelenden (4a, 4b) fließt, und anschließendes Erstar¬ renlassen der Metallschmelze. - Heating the power supply ends (2a, 3a) so that the molten metal of the power supplies (2, 3) flows around the uncoiled filament ends (4a, 4b), and then allowing the metal melt to solidify.
5. Verfahren zur Herstellung einer elektrischen Glühlampe nach An¬ spruch 4, dadurch gekennzeichnet, daß jeweils ein Ende (2a, 3a) der Stromzuführungen (2, 3) hakenförmig gebogen ist und die Glühwendel (4) mit ihren ungewendelten Enden (4a, 4b) vor dem Erhitzen der Stromzuführungsenden (2a, 3a) in die hakenförmigen Stromzufüh¬ rungsenden (2a, 3a) eingehakt oder eingehängt wird.5. A method for producing an electric light bulb according to claim 4, characterized in that one end (2a, 3a) of the power leads (2, 3) is bent in a hook shape and the filament (4) with its uncoiled ends (4a, 4b ) before heating the power supply ends (2a, 3a) into the hook-shaped power supply ends (2a, 3a).
6. Verfahren zur Herstellung einer elektrischen Glühlampe nach An¬ spruch 5, dadurch gekennzeichnet, daß die hakenförmig umgebogenen Enden (2a, 3a) der Stromzuführungen (2, 3) mittels eines LASER's lokal erhitzt und geschmolzen werden. 6. A process for producing an electric light bulb according to claim 5, characterized in that the hook-shaped bent ends (2a, 3a) of the power supply lines (2, 3) are locally heated and melted by means of a LASER.
PCT/DE1996/000100 1995-01-31 1996-01-24 Electric incandescent lamp and process for producing electric incandescent lamps WO1996024157A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59601772T DE59601772D1 (en) 1995-01-31 1996-01-24 METHOD FOR PRODUCING AN ELECTRIC BULB
EP96900847A EP0807316B1 (en) 1995-01-31 1996-01-24 Process for producing electric incandescent lamps
HU9800336A HU220536B1 (en) 1995-01-31 1996-01-24 Process for producing electric incandescent lamps
JP8523161A JPH11502663A (en) 1995-01-31 1996-01-24 Light bulb and method of manufacturing light bulb

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19503026.5 1995-01-31
DE19503026 1995-01-31

Publications (1)

Publication Number Publication Date
WO1996024157A1 true WO1996024157A1 (en) 1996-08-08

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Application Number Title Priority Date Filing Date
PCT/DE1996/000100 WO1996024157A1 (en) 1995-01-31 1996-01-24 Electric incandescent lamp and process for producing electric incandescent lamps

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EP (1) EP0807316B1 (en)
JP (1) JPH11502663A (en)
CN (1) CN1104035C (en)
CA (1) CA2211857A1 (en)
DE (1) DE59601772D1 (en)
HU (1) HU220536B1 (en)
WO (1) WO1996024157A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015065A2 (en) * 1995-10-20 1997-04-24 Philips Electronics N.V. Electric lamp
JP2002528880A (en) * 1998-10-22 2002-09-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Incandescent lamp
EP1684331A1 (en) * 2004-09-10 2006-07-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electric incandescent lamp

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
DE102004027806A1 (en) * 2004-06-08 2006-01-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Method for welding a metal foil with a cylindrical metal pin
CN104319225A (en) * 2014-09-12 2015-01-28 昆山博文照明科技有限公司 Electric incandescent bulb and manufacturing method thereof

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US2247268A (en) * 1939-04-13 1941-06-24 Tung Sol Lamp Works Inc Miniature incandescent lamp
GB2086286A (en) * 1980-10-30 1982-05-12 Gen Electric Brazed tungsten filament to lead joint

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Publication number Priority date Publication date Assignee Title
US2247268A (en) * 1939-04-13 1941-06-24 Tung Sol Lamp Works Inc Miniature incandescent lamp
GB2086286A (en) * 1980-10-30 1982-05-12 Gen Electric Brazed tungsten filament to lead joint

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See also references of EP0807316A1 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015065A2 (en) * 1995-10-20 1997-04-24 Philips Electronics N.V. Electric lamp
WO1997015065A3 (en) * 1995-10-20 1997-07-31 Philips Electronics Nv Electric lamp
JP2002528880A (en) * 1998-10-22 2002-09-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Incandescent lamp
EP1684331A1 (en) * 2004-09-10 2006-07-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electric incandescent lamp

Also Published As

Publication number Publication date
CN1104035C (en) 2003-03-26
JPH11502663A (en) 1999-03-02
EP0807316A1 (en) 1997-11-19
EP0807316B1 (en) 1999-04-28
CA2211857A1 (en) 1996-08-08
HUP9800336A2 (en) 1998-06-29
CN1172550A (en) 1998-02-04
HU220536B1 (en) 2002-03-28
HUP9800336A3 (en) 2000-07-28
DE59601772D1 (en) 1999-06-02

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