EP0914674B1 - Electric lamp - Google Patents

Electric lamp Download PDF

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Publication number
EP0914674B1
EP0914674B1 EP97951065A EP97951065A EP0914674B1 EP 0914674 B1 EP0914674 B1 EP 0914674B1 EP 97951065 A EP97951065 A EP 97951065A EP 97951065 A EP97951065 A EP 97951065A EP 0914674 B1 EP0914674 B1 EP 0914674B1
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EP
European Patent Office
Prior art keywords
flattened
power supply
filament
lead wire
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP97951065A
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German (de)
French (fr)
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EP0914674A1 (en
Inventor
Rolf Minder
Rolf Kiesel
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Osram GmbH
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Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/16—Electric connection thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • 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 lamp according to the preamble of the claim 1.
  • Such an electric lamp is for example in the Japanese utility model 49-37 422.
  • This utility model describes the attachment a filament on a power supply wire that is a flattened, U-shaped formed end.
  • the two U-legs point in their connection area a reduced wire thickness and thereby form one on the helix diameter coordinated recording in which an uncoiled filament end is arranged. Outside the recording, the two U-legs touch, so that the holder for the uncoiled filament end is reminiscent of a needle eye.
  • German patent DE 690 735 describes an electric lamp with a Filament, flattened by pinching in a hook-shaped design End of the power supply wires is held.
  • the inner surfaces of the power supply wire hooks are provided with grooves, their dimensions and distances correspond approximately to the wire diameter.
  • the attachment and electric take place Contacting the incandescent filament with the help of power supply wires that a have a flattened U-shaped end.
  • the two U-legs of the U-shaped Power supply wire section form a gap in which a coiled end the filament is arranged.
  • the gap width is smaller than the outside diameter of the coiled filament end, so that the filament is jammed in the gap-shaped Recording is held.
  • the gap width is advantageously from 60 to 90 percent and preferably 70 percent of the outer diameter of the coiled Glühwendelendes. This ensures a secure fixation of the filament on the Power supply achieved with only slight spiral deformation.
  • the ends of the U-legs together While at one another embodiment for this purpose with the end of the free U-leg the non-flattened lead wire portion is welded.
  • the free U-leg has an angled End that is welded to the other U-leg. This allows the Gap width, given wire thickness and degree of flattening of the power supply wire, can be varied within certain limits. The one that protrudes beyond the U-legs The filament end is welded to the power supply wire. Thereby there is good electrical contact between the incandescent filament and the power supply wire achieved with low contact resistance.
  • the invention is particularly suitable for attaching double coiled filaments, the single coiled Have filament ends.
  • FIG. 1 shows a schematic representation of an electric light bulb with the helix attachment according to the invention.
  • This light bulb owns a glass lamp bulb 1, a bayonet base 2 and one in the lamp bulb 1 enclosed double-coiled filament 3, which means two power supply wires 4, 5 melted into a glass bead 6 is supported and electrically contacted.
  • the filament 3 To fix the filament 3 are the ends 4a, 5a of the power supply wires 4, 5 are flattened and U-shaped educated.
  • a simply coiled filament 3a Incandescent filament 3 is through the U-shaped section 4a, 5a of a power supply wire 4, 5 supported. So far all four exemplary embodiments are correct match.
  • FIG. 2 shows a first exemplary embodiment of the power supply wire 4 or 5 from Figure 1 with the coil end attached to it.
  • the end 41 this power supply wire is flattened and U-shaped, so that the U-shaped section 41 has a free U-leg 42 and one to the non-flattened section 43 of the power supply wire connected U-leg 44 has.
  • the end 42a of the free U-leg 42 is with through the non-flattened portion 43 of the power supply wire a weld spot 46 connected. This defines the two flattened U-legs 42, 44 a gap 45 in which a simply coiled End 3a of the filament 3 is arranged with a clamping effect.
  • the width of the Gap 45 is determined by the flattening of the power supply wire.
  • the gap width is about 70 percent of the outside diameter of the simply coiled filament end 3a. That means that simply coiled end 3a of filament 3 in gap 45 to approximately 70 percent of its original outer diameter compressed becomes.
  • the spiral end projecting beyond the U-shaped section 41 is welded to the power supply wire.
  • This type of helix attachment is suitable for filaments 3 with an outer diameter of the coiled Helical ends 3a of up to 700 ⁇ m.
  • the power supply wires 4, 5 have a diameter or a diameter in the non-flattened section 43 Wire thickness between 0.4 mm and 0.8 mm.
  • FIG. 3 shows a second exemplary embodiment of the power supply wire 4 or 5 with the spiral end attached to it.
  • the end 51 of the Power supply wire is flattened and U-shaped, so that the U-shaped section 51 a flattened free U-leg 52 and one connected to the non-flattened portion 53 of the power supply wire has flattened U-leg 54.
  • the end 52a of the free U-leg 52 is not flattened, however. It 52a has the same Diameter or the same wire thickness as the non-flattened section 53 of the power supply wire.
  • the non-flattened end 52a of the free U-leg 52 is through a weld spot 56 with the other U-leg 54 connected.
  • the width of the gap 55 is determined by the flattening of the power supply wire. She is so chosen that the gap width about 70 percent of the outer diameter of the simple coiled filament end 3a is. That means it's easy coiled filament end 3a in gap 55 to approximately 70 percent its original outer diameter is compressed.
  • the protruding beyond the U-shaped section 51 is with the Power supply wire welded. This type of helix attachment is suitable for incandescent filaments 3 with an outer diameter of the filament ends 3a of up to 700 ⁇ m.
  • the power supply wires 4, 5 ( Figure 1) have in non-flattened section 53 a diameter or a wire gauge between 0.4 mm and 0.8 mm.
  • Figure 4 shows a third embodiment of the power supply wire 4 or 5 with the spiral end attached to it.
  • the end 61 of the power supply wire is flattened and U-shaped, so that the U-shaped Section 61 a flattened free U-leg 62 and one connected the non-flattened section 63 of the power supply wire has flattened U-legs 64.
  • the end 62a of the free U-leg 62 is angled from this and with the end of the other U-leg 64 connected by a welding spot 66.
  • the two flattened U-legs 62, 64 a gap 65 in which a simple coiled end 3a of the filament 3 is arranged with a clamping effect.
  • the width of the gap 65 is here, in contrast to the two previous ones Embodiments, not only by the degree of flattening of the Power supply wire determines, but also depends on the length of the angled end 62a of the free U-leg 62 and from the angle, which includes the angled end 62a with the U-leg 62.
  • the width the gap 65 is adjusted by increasing this angle so that they roughly 70 percent of the outside diameter of the single-helix
  • the filament 3a is. That is, that which is jammed in the gap 65 simply coiled spiral end 3a to about 70 percent of its original outer diameter is compressed. That about the U-shaped section 61 protruding spiral end is with the U-leg 64 welded.
  • the angle between the free U-leg 62 and his angled end 62a is before forming the U-shaped section 61 and before pinching the filament end about 45 degrees.
  • 64 is the Angle widened.
  • This type of filament attachment is suitable for incandescent filaments 3 with an outer diameter of the coiled coil ends 3a up to 2mm.
  • the power supply wires 4, 5 ( Figure 1) have in non-flattened section 63 a diameter or a wire gauge between 0.4 mm and 0.8 mm.
  • FIG. 5 shows a fourth embodiment of the power supply wire 4 or 5 with the spiral end attached to it.
  • the end 71 of the power supply wire is flattened and U-shaped, so that the U-shaped Section 71 a flattened free U-leg 72 and one connected the non-flattened section 73 of the power supply wire has flattened U-leg 74.
  • the U-leg 74 is on his End 74a, which directly adjoins non-flattened section 73 of the power supply wire connects, stepped.
  • the end 72a of the free U-leg 72 is with the non-flattened section 73 of the power supply wire connected by a weld spot 76.
  • the two flattened U-legs 72, 74 a gap 75, in which has a simply coiled end 3a of the filament 3 with a clamping effect is arranged. That with the non-flattened section 73 of the power supply connected end of the U-leg 74 is formed as a step 74a, over that end of the U-leg 74 to the non-flattened section 73 is formed.
  • the width of the gap 75 is due to the degree of flattening of the U-shaped portion 71 of the power supply wire and determined by the level of step 74a. It is chosen so that the width of the Gap 75 approx. 70 percent of the outside diameter of the simply coiled The filament 3a is.
  • the Power supply wires 4, 5 have in the non-flattened section 73 a diameter or a wire thickness between 0.4 mm and 0.8 mm.
  • the wire thickness of the flattened U-shaped wire section 41, 51, 61, 71 is between 40 and 80 in all the exemplary embodiments explained above Percent of the wire thickness or the diameter of the non-flattened section 43, 53, 63, 73 of the power supply wire.
  • the invention is not limited to fastening and electrical contacting of double coiled filaments with single coiled Incandescent filament ends on power supply wires in electric light bulbs, but can also be used for fastening and electrical contacting of electrode filaments in fluorescent lamps or other low-pressure discharge lamps be applied. In addition, the invention also on single coiled filaments with coiled ends be applied.

Abstract

The invention relates to the fastening of incandescent coil filaments to current lead-in wires in electric lamps. One end (41) of the current lead-in wires is flattened and U-shaped. The U-shaped segment (41) of the current lead-in wire forms a gap-like seat (45) for a coiled incandescent coil-filament end (3a), the gap width of which is smaller than the outside diameter of the incandescent coil-filament end (3a).

Description

Die Erfindung betrifft eine elektrische Lampe gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to an electric lamp according to the preamble of the claim 1.

I. Stand der Technik I. State of the art

Eine derartige elektrische Lampe ist beispielsweise in dem japanischen Gebrauchsmuster 49-37 422 offenbart. Dieses Gebrauchsmuster beschreibt die Befestigung einer Glühwendel an einem Stromzuführungsdraht, der ein angeflachtes, U-förmig ausgebildetes Ende aufweist. In ihrem Verbindungsbereich weisen die beiden U-Schenkel eine reduzierte Drahtstärke auf und bilden dadurch eine auf den Wendeldurchmesser abgestimmte Aufnahme, in der ein ungewendeltes Glühwendelende angeordnet ist. Außerhalb der Aufnahme berühren sich die beiden U-Schenkel, so daß die Aufnahme für das ungewendelte Glühwendelende an ein Nadelöhr erinnert.Such an electric lamp is for example in the Japanese utility model 49-37 422. This utility model describes the attachment a filament on a power supply wire that is a flattened, U-shaped formed end. The two U-legs point in their connection area a reduced wire thickness and thereby form one on the helix diameter coordinated recording in which an uncoiled filament end is arranged. Outside the recording, the two U-legs touch, so that the holder for the uncoiled filament end is reminiscent of a needle eye.

Die deutsche Patentschrift DE 690 735 beschreibt eine elektrische Lampe mit einer Glühwendel, die durch Einklemmen in einem hakenförmig ausgebildeten, abgeflachten Ende der Stromzuführungsdrähte gehalten wird. Die Innenflächen der Stromzuführungsdrahthaken sind mit Riefen versehen, deren Abmessungen und Abstände annähernd dem Wendeldrahtdurchmesser entsprechen.The German patent DE 690 735 describes an electric lamp with a Filament, flattened by pinching in a hook-shaped design End of the power supply wires is held. The inner surfaces of the power supply wire hooks are provided with grooves, their dimensions and distances correspond approximately to the wire diameter.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist die Aufgabe der Erfindung, eine elektrische Lampe mit einer verbesserten Befestigung zwischen Glühwendel und deren Stromzuführung bereitzustellen.It is the object of the invention to provide an electric lamp with an improved mounting to provide between the filament and its power supply.

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 solved. Particularly advantageous embodiments of the invention are shown in described the subclaims.

Bei den erfindungsgemäßen elektrischen Lampen erfolgt die Befestigung und elektrische Kontaktierung der Glühwendel mit Hilfe von Stromzuführungsdrähten, die ein angeflachtes U-förmiges Ende besitzen. Die beiden U-Schenkel des U-förmigen Stromzuführungsdrahtabschnittes bilden einen Spalt, in dem ein gewendeltes Ende der Glühwendel angeordnet ist. Die Spaltbreite ist kleiner als der Außendurchmesser des gewendelten Glühwendelendes, so daß die Glühwendel klemmend in der spaltfürmigen Aufnahme gehaltert wird. Die Spaltbreite beträgt vorteiihafterweise 60 bis 90 Prozent und vorzugsweise 70 Prozent des Außendurchmessers des gewendelten Glühwendelendes. Dadurch wird eine sichere Fixierung der Glühwendel an der Stromzuführung bei nur geringer Wendeldeformation erreicht. Um ein Aufbiegen oder Öffnen der U-Schenkel zu verhindern, sind bei zwei Ausführungsbeispielen der Erfindung die Enden der U-Schenkel miteinander verschweißt, während bei einem weiteren Ausführungsbeispiel zu diesem Zweck das Ende des freien U-Schenkels mit dem nicht-angeflachten Stromzuführungsdrahtabschnitt verschweißt ist. Bei einem bevorzugten Ausführungsbeispiel (Figur 4) besitzt der freie U-Schenkel ein abgewinkeltes Ende, das mit dem anderen U-Schenkel verschweißt ist. Dadurch kann die Spaltbreite, bei vorgegebener Drahtstärke und Anflachungsgrad des Stromzuführungsdrahtes, in gewissen Grenzen variiert werden. Das über die U-Schenkel hinausragende Glühwendelende ist mit dem Stromzuführungsdraht verschweißt. Dadurch wird ein guter elektrischer Kontakt zwischen Glühwendel und Stromzuführungsdraht mit geringem Übergangswiderstand erzielt. Die Erfindung eignet sich insbesondere zur Befestigung von doppelt gewendelten Glühwendeln, die einfach gewendelte Glühwendelenden besitzen. In the case of the electric lamps according to the invention, the attachment and electric take place Contacting the incandescent filament with the help of power supply wires that a have a flattened U-shaped end. The two U-legs of the U-shaped Power supply wire section form a gap in which a coiled end the filament is arranged. The gap width is smaller than the outside diameter of the coiled filament end, so that the filament is jammed in the gap-shaped Recording is held. The gap width is advantageously from 60 to 90 percent and preferably 70 percent of the outer diameter of the coiled Glühwendelendes. This ensures a secure fixation of the filament on the Power supply achieved with only slight spiral deformation. To bend open or to prevent opening of the U-legs are in two embodiments Invention welded the ends of the U-legs together, while at one another embodiment for this purpose with the end of the free U-leg the non-flattened lead wire portion is welded. At a preferred embodiment (Figure 4), the free U-leg has an angled End that is welded to the other U-leg. This allows the Gap width, given wire thickness and degree of flattening of the power supply wire, can be varied within certain limits. The one that protrudes beyond the U-legs The filament end is welded to the power supply wire. Thereby there is good electrical contact between the incandescent filament and the power supply wire achieved with low contact resistance. The invention is particularly suitable for attaching double coiled filaments, the single coiled Have filament ends.

III. Beschreibung der bevorzugten Ausführungsbeispiele III. Description of the preferred embodiments

Nachstehend wird die Erfindung anhand mehrerer bevorzugter Ausführungsbeispiele näher erläutert. Es zeigen:

Figur 1
eine schematische Darstellung einer elektrischen Glühlampe mit der erfindungsgemäßen Wendelbefestigung
Figur 2
eine Seitenansicht des U-förmigen Endes eines Stromzuführungsdrahtes und des daran fixierten Wendelendes gemäß des ersten Ausführungsbeispiels der Erfindung in schematischer Darstellung
Figur 3
eine Seitenansicht des U-förmigen Endes eines Stromzuführungsdrahtes und des daran fixierten Wendelendes gemäß des zweiten Ausführungsbeispiels der Erfindung in schematischer Darstellung
Figur 4
eine Seitenansicht des U-förmigen Endes eines Stromzuführungsdrahtes und des daran fixierten Wendelendes gemäß des dritten Ausführungsbeispiels der Erfindung in schematischer Darstellung
Figur 5
eine Seitenansicht des U-förmigen Endes eines Stromzuführungsdrahtes und des daran fixierten Wendelendes gemäß des vierten Ausführungsbeispiels der Erfindung in schematischer Darstellung
The invention is explained in more detail below on the basis of several preferred exemplary embodiments. Show it:
Figure 1
is a schematic representation of an electric light bulb with the filament attachment according to the invention
Figure 2
a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the first embodiment of the invention in a schematic representation
Figure 3
a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the second embodiment of the invention in a schematic representation
Figure 4
a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the third embodiment of the invention in a schematic representation
Figure 5
a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the fourth embodiment of the invention in a schematic representation

Die Figur 1 zeigt eine schematische Darstellung einer elektrischen Glühlampe mit der erfindungsgemäßen Wendelbefestigung. Diese Glühlampe besitzt einen gläsernen Lampenkolben 1, einen Bajonettsockel 2 und eine im Lampenkolben 1 eingeschlossene doppelt gewendelte Glühwendel 3, die mittels zwei in einer Glasperle 6 eingeschmolzenen Stromzuführungsdrähten 4, 5 gehaltert und elektrisch kontaktiert ist. Zur Fixierung der Glühwendel 3 sind die Enden 4a, 5a der Stromzuführungsdrähte 4, 5 angeflacht und U-förmig ausgebildet. Jeweils ein nur einfach gewendeltes Glühwendelende 3a der Glühwendel 3 wird durch den U-förmigen Abschnitt 4a, 5a eines Stromzuführungsdrahtes 4, 5 gehaltert. Soweit stimmen alle vier Ausführungsbeispiele überein.Figure 1 shows a schematic representation of an electric light bulb with the helix attachment according to the invention. This light bulb owns a glass lamp bulb 1, a bayonet base 2 and one in the lamp bulb 1 enclosed double-coiled filament 3, which means two power supply wires 4, 5 melted into a glass bead 6 is supported and electrically contacted. To fix the filament 3 are the ends 4a, 5a of the power supply wires 4, 5 are flattened and U-shaped educated. In each case a simply coiled filament 3a Incandescent filament 3 is through the U-shaped section 4a, 5a of a power supply wire 4, 5 supported. So far all four exemplary embodiments are correct match.

Die Figur 2 zeigt ein erstes Ausführungsbeispiel des Stromzuführungsdrahtes 4 oder 5 aus Figur 1 mit dem daran befestigten Wendelende. Das Ende 41 dieses Stromzuführungsdrahtes ist angeflacht und U-förmig ausgebildet, so daß der U-förmige Abschnitt 41 einen freien U-Schenkel 42 und einen an den nicht-angeflachten Abschnitt 43 des Stromzuführungsdrahtes angeschlossenen U-Schenkel 44 besitzt. Das Ende 42a des freien U-Schenkels 42 ist mit dem nicht-angeflachten Abschnitt 43 des Stromzuführungsdrahtes durch einen Schweißpunkt 46 verbunden. Dadurch definieren die beiden angeflachten U-Schenkel 42, 44 einen Spalt 45, in dem ein einfach gewendeltes Ende 3a der Glühwendel 3 mit Klemmwirkung angeordnet ist. Die Breite des Spaltes 45 ist durch die Anflachung des Stromzuführungsdrahtes bestimmt. Sie ist so gewählt, daß die Spaltbreite ca. 70 Prozent des Außendurchmessers des einfach gewendelten Glühwendelendes 3a beträgt. Das heißt, daß das einfach gewendelte Ende 3a der Glühwendel 3 in dem Spalt 45 auf ungefähr 70 Prozent seines ursprünglichen Außendurchmessers zusammengedrückt wird. Das über den U-förmigen Abschnitt 41 hinausragende Wendelende ist mit dem Stromzuführungsdraht verschweißt. Diese Art der Wendelbefestigung eignet sich für Glühwendeln 3 mit einem Außendurchmesser der gewendelten Wendelenden 3a von bis zu 700 µm. Die Stromzuführungsdrähte 4, 5 besitzen im nicht-angeflachten Abschnitt 43 einen Durchmesser bzw. eine Drahtstärke zwischen 0,4 mm und 0,8 mm.FIG. 2 shows a first exemplary embodiment of the power supply wire 4 or 5 from Figure 1 with the coil end attached to it. The end 41 this power supply wire is flattened and U-shaped, so that the U-shaped section 41 has a free U-leg 42 and one to the non-flattened section 43 of the power supply wire connected U-leg 44 has. The end 42a of the free U-leg 42 is with through the non-flattened portion 43 of the power supply wire a weld spot 46 connected. This defines the two flattened U-legs 42, 44 a gap 45 in which a simply coiled End 3a of the filament 3 is arranged with a clamping effect. The width of the Gap 45 is determined by the flattening of the power supply wire. It is chosen so that the gap width is about 70 percent of the outside diameter of the simply coiled filament end 3a. That means that simply coiled end 3a of filament 3 in gap 45 to approximately 70 percent of its original outer diameter compressed becomes. The spiral end projecting beyond the U-shaped section 41 is welded to the power supply wire. This type of helix attachment is suitable for filaments 3 with an outer diameter of the coiled Helical ends 3a of up to 700 µm. The power supply wires 4, 5 have a diameter or a diameter in the non-flattened section 43 Wire thickness between 0.4 mm and 0.8 mm.

Die Figur 3 zeigt ein zweites Ausführungsbeispiel des Stromzuführungsdrahtes 4 oder 5 mit dem daran befestigten Wendelende. Das Ende 51 des Stromzuführungsdrahtes ist angeflacht und U-förmig ausgebildet, so daß der U-förmige Abschnitt 51 einen angeflachten freien U-Schenkel 52 und einen an den nicht-angeflachten Abschnitt 53 des Stromzuführungsdrahtes angeschlossenen angeflachten U-Schenkel 54 besitzt. Das Ende 52a des freien U-Schenkels 52 ist allerdings nicht angeflacht. Es 52a besitzt den gleichen Durchmesser bzw. die gleiche Drahtstärke wie der nicht-angeflachte Abschnitt 53 des Stromzuführungsdrahtes. Das nicht-angeflachte Ende 52a des freien U-Schenkels 52 ist durch einen Schweißpunkt 56 mit dem anderen U-Schenkel 54 verbunden. Dadurch definieren die beiden angeflachten U-Schenkel 52, 54 einen Spalt 55, in dem ein einfach gewendeltes Ende 3a der Glühwendel 3 mit Klemmwirkung angeordnet ist. Die Breite des Spaltes 55 ist durch die Anflachung des Stromzuführungsdrahtes bestimmt. Sie ist so gewählt, daß die Spaltbreite ca. 70 Prozent des Außendurchmessers des einfach gewendelten Glühwendelendes 3a beträgt. Das heißt, daß das einfach gewendelte Glühwendelende 3a in dem Spalt 55 auf ungefähr 70 Prozent seines ursprünglichen Außendurchmessers zusammengedrückt wird. Das über den U-förmigen Abschnitt 51 hinausragende Wendelende ist mit dem Stromzuführungsdraht verschweißt. Diese Art der Wendelbefestigung eignet sich für Glühwendeln 3 mit einem Außendurchmesser der Wendelenden 3a von bis zu 700 µm. Die Stromzuführungsdrähte 4, 5 (Figur 1) besitzen im nicht-angeflachten Abschnitt 53 einen Durchmesser bzw. eine Drahtstärke zwischen 0,4 mm und 0,8 mm.FIG. 3 shows a second exemplary embodiment of the power supply wire 4 or 5 with the spiral end attached to it. The end 51 of the Power supply wire is flattened and U-shaped, so that the U-shaped section 51 a flattened free U-leg 52 and one connected to the non-flattened portion 53 of the power supply wire has flattened U-leg 54. The end 52a of the free U-leg 52 is not flattened, however. It 52a has the same Diameter or the same wire thickness as the non-flattened section 53 of the power supply wire. The non-flattened end 52a of the free U-leg 52 is through a weld spot 56 with the other U-leg 54 connected. This defines the two flattened U-legs 52, 54 a gap 55 in which a simply coiled end 3a of the Filament 3 is arranged with a clamping effect. The width of the gap 55 is determined by the flattening of the power supply wire. she is so chosen that the gap width about 70 percent of the outer diameter of the simple coiled filament end 3a is. That means it's easy coiled filament end 3a in gap 55 to approximately 70 percent its original outer diameter is compressed. The protruding beyond the U-shaped section 51 is with the Power supply wire welded. This type of helix attachment is suitable for incandescent filaments 3 with an outer diameter of the filament ends 3a of up to 700 µm. The power supply wires 4, 5 (Figure 1) have in non-flattened section 53 a diameter or a wire gauge between 0.4 mm and 0.8 mm.

Die Figur 4 zeigt ein drittes Ausführungsbeispiel des Stromzuführungsdrahtes 4 oder 5 mit dem daran befestigten Wendelende. Das Ende 61 des Stromzuführungsdrahtes ist angeflacht und U-förmig ausgebildet, so daß der U-förmige Abschnitt 61 einen angeflachten freien U-Schenkel 62 und einen an den nicht-angeflachten Abschnitt 63 des Stromzuführungsdrahtes angeschlossenen angeflachten U-Schenkel 64 besitzt. Das Ende 62a des freien U-Schenkels 62 ist von diesem abgewinkelt und mit dem Ende des anderen U-Schenkels 64 durch einen Schweißpunkt 66 verbunden. Dadurch definieren die beiden angeflachten U-Schenkel 62, 64 einen Spalt 65, in dem ein einfach gewendeltes Ende 3a der Glühwendel 3 mit Klemmwirkung angeordnet ist. Figure 4 shows a third embodiment of the power supply wire 4 or 5 with the spiral end attached to it. The end 61 of the power supply wire is flattened and U-shaped, so that the U-shaped Section 61 a flattened free U-leg 62 and one connected the non-flattened section 63 of the power supply wire has flattened U-legs 64. The end 62a of the free U-leg 62 is angled from this and with the end of the other U-leg 64 connected by a welding spot 66. Define by that the two flattened U-legs 62, 64 a gap 65 in which a simple coiled end 3a of the filament 3 is arranged with a clamping effect.

Die Breite des Spaltes 65 ist hier, im Gegensatz zu den beiden vorherigen Ausführungsbeispielen, nicht allein durch den Grad der Anflachung des Stromzuführungsdrahtes bestimmt, sondern hängt auch von der Länge des abgewinkelten Endes 62a des freien U-Schenkels 62 und von dem Winkel ab, den das abgewinkelte Ende 62a mit dem U-Schenkel 62 einschließt. Die Breite des Spaltes 65 wird durch Vergrößern dieses Winkels so eingestellt, daß sie ungefähr 70 Prozent des Außendurchmessers des einfach gewendelten Glühwendelendes 3a beträgt. Das heißt, daß das in dem Spalt 65 eingeklemmte einfach gewendelte Wendelende 3a auf ungefähr 70 Prozent seines ursprünglichen Außendurchmessers zusammengedrückt wird. Das über den U-förmigen Abschnitt 61 hinausragende Wendelende ist mit dem U-Schenkel 64 verschweißt. Der Winkel zwischen dem freien U-Schenkel 62 und seinem abgewinkelten Ende 62a beträgt vor dem Formen des U-förmigen Abschnities 61 und vor dem Einklemmen des Glühwendelendes ca. 45 Grad. Beim Einklemmen der Wendel 3 zwischen den beiden U-Schenkeln 62, 64 wird der Winkel aufgeweitet. Diese Art der Wendelbefestigung eignet sich für Glühwendeln 3 mit einem Außendurchmesser der gewendelten Wendelenden 3a von bis zu 2mm. Die Stromzuführungsdrähte 4, 5 (Figur 1) besitzen im nicht-angeflachten Abschnitt 63 einen Durchmesser bzw. eine Drahtstärke zwischen 0,4 mm und 0,8 mm.The width of the gap 65 is here, in contrast to the two previous ones Embodiments, not only by the degree of flattening of the Power supply wire determines, but also depends on the length of the angled end 62a of the free U-leg 62 and from the angle, which includes the angled end 62a with the U-leg 62. The width the gap 65 is adjusted by increasing this angle so that they roughly 70 percent of the outside diameter of the single-helix The filament 3a is. That is, that which is jammed in the gap 65 simply coiled spiral end 3a to about 70 percent of its original outer diameter is compressed. That about the U-shaped section 61 protruding spiral end is with the U-leg 64 welded. The angle between the free U-leg 62 and his angled end 62a is before forming the U-shaped section 61 and before pinching the filament end about 45 degrees. At the Pinching the helix 3 between the two U-legs 62, 64 is the Angle widened. This type of filament attachment is suitable for incandescent filaments 3 with an outer diameter of the coiled coil ends 3a up to 2mm. The power supply wires 4, 5 (Figure 1) have in non-flattened section 63 a diameter or a wire gauge between 0.4 mm and 0.8 mm.

Die Figur 5 zeigt ein viertes Ausführungsbeispiel des Stromzuführungsdrahtes 4 oder 5 mit dem daran befestigten Wendelende. Das Ende 71 des Stromzuführungsdrahtes ist angeflacht und U-förmig ausgebildet, so daß der U-förmige Abschnitt 71 einen angeflachten freien U-Schenkel 72 und einen an den nicht-angeflachten Abschnitt 73 des Stromzuführungsdrahtes angeschlossenen angeflachten U-Schenkel 74 besitzt. Der U-Schenkel 74 ist an seinem Ende 74a, das sich unmittelbar an den nicht-angeflachten Abschnitt 73 des Stromzuführungsdrahtes anschließt, stufenförmig ausgebildet. Das Ende 72a des freien U-Schenkels 72 ist mit dem nicht-angeflachten Abschnitt 73 des Stromzuführungsdrahtes durch einen Schweißpunkt 76 verbunden. Dadurch definieren die beiden angeflachten U-Schenkel 72, 74 einen Spalt 75, in dem ein einfach gewendeltes Ende 3a der Glühwendel 3 mit Klemmwirkung angeordnet ist. Das mit dem nicht-angeflachten Abschnitt 73 der Stromzuführung verbundene Ende des U-Schenkels 74 ist als eine Stufe 74a ausgebildet, über die dieses Ende des U-Schenkels 74 an den nicht-angeflachten Abschnitt 73 angeformt ist. Die Breite des Spaltes 75 ist durch den Grad der Anflachung des U-förmigen Abschnittes 71 des Stromzuführungsdrahtes und durch die Höhe der Stufe 74a bestimmt. Sie ist so gewählt, daß die Breite des Spaltes 75 ca. 70 Prozent des Außendurchmessers des einfach gewendelten Glühwendelendes 3a beträgt. Das heißt, daß das gewendelte Ende 3a der Glühwendel 3 in dem Spalt 75 auf ungefähr 70 Prozent seines ursprünglichen Außendurchmesser zusammengedrückt wird. Das über den U-förmigen Abschnitt 71 hinausragende Wendelende ist mit dem Stromzuführungsdraht verschweißt. Diese Art der Wendelbefestigung eignet sich für Glühwendeln 3 mit einem Außendurchmesser der Wendelenden 3a von bis zu 2 mm. Die Stromzuführungsdrähte 4, 5 (Figur 1) besitzen im nicht-angeflachten Abschnitt 73 einen Durchmesser bzw. eine Drahtstärke zwischen 0,4 mm und 0,8 mm.FIG. 5 shows a fourth embodiment of the power supply wire 4 or 5 with the spiral end attached to it. The end 71 of the power supply wire is flattened and U-shaped, so that the U-shaped Section 71 a flattened free U-leg 72 and one connected the non-flattened section 73 of the power supply wire has flattened U-leg 74. The U-leg 74 is on his End 74a, which directly adjoins non-flattened section 73 of the power supply wire connects, stepped. The end 72a of the free U-leg 72 is with the non-flattened section 73 of the power supply wire connected by a weld spot 76. Thereby define the two flattened U-legs 72, 74 a gap 75, in which has a simply coiled end 3a of the filament 3 with a clamping effect is arranged. That with the non-flattened section 73 of the power supply connected end of the U-leg 74 is formed as a step 74a, over that end of the U-leg 74 to the non-flattened section 73 is formed. The width of the gap 75 is due to the degree of flattening of the U-shaped portion 71 of the power supply wire and determined by the level of step 74a. It is chosen so that the width of the Gap 75 approx. 70 percent of the outside diameter of the simply coiled The filament 3a is. This means that the coiled end 3a of the Filament 3 in gap 75 to approximately 70 percent of its original Outer diameter is compressed. That over the U-shaped section 71 protruding spiral end is with the power supply wire welded. This type of filament attachment is suitable for incandescent filaments 3 with an outer diameter of the spiral ends 3a of up to 2 mm. The Power supply wires 4, 5 (FIG. 1) have in the non-flattened section 73 a diameter or a wire thickness between 0.4 mm and 0.8 mm.

Die Drahtstärke des angeflachten U-förmigen Drahtabschnittes 41, 51, 61, 71 liegt bei allen oben erläuterten Ausführungsbeispielen zwischen 40 und 80 Prozent der Drahtstärke bzw. des Durchmessers des nicht-angeflachten Abschnittes 43, 53, 63, 73 des Stromzuführungsdrahtes.The wire thickness of the flattened U-shaped wire section 41, 51, 61, 71 is between 40 and 80 in all the exemplary embodiments explained above Percent of the wire thickness or the diameter of the non-flattened section 43, 53, 63, 73 of the power supply wire.

Die Erfindung beschränkt sich nicht auf die Befestigung und elektrische Kontaktierung von doppelt gewendelten Glühwendeln mit einfach gewendelten Glühwendelenden an Stromzuführungsdrähten bei elektrischen Glühlampen, sondern kann ebenso auch auf die Befestigung und elektrische Kontaktierung von Elektrodenwendeln bei Leuchtstofflampen oder anderen Niederdruckentladungslampen angewandt werden. Außerdem kann die Erfindung auch auf einfach gewendelte Glühwendeln mit gewendelten Enden angewendet werden.The invention is not limited to fastening and electrical contacting of double coiled filaments with single coiled Incandescent filament ends on power supply wires in electric light bulbs, but can also be used for fastening and electrical contacting of electrode filaments in fluorescent lamps or other low-pressure discharge lamps be applied. In addition, the invention also on single coiled filaments with coiled ends be applied.

Claims (5)

  1. Electric lamp having a lamp vessel (1) and at least one incandescent filament (3) arranged in the lamp vessel (1), and having electric supply leads (4, 5) which are connected to the incandescent filament (3),
    at least one of the supply leads (4, 5) being constructed as a supply lead wire,
    the end (41; 51; 61; 71) of the supply lead wire (4, 5) being constructed in a flattened and U-shaped fashion, the U-shaped supply lead wire end (41; 51; 61; 71) having a free U limb (42; 52; 62; 72) and a U limb (44; 54; 64; 74) integrally formed on the non-flattened supply lead wire section (43; 53; 63; 73),
    a coiled end (3a) of the incandescent filament (3) being arranged in a receptacle (45; 55; 65; 75) between the flattened U limbs (42, 44; 52, 54; 62, 64; 72, 74) of the supply lead wire (4, 5), the receptacle (45; 55; 65; 75) being constructed between the flattened U limbs (42, 44; 52, 54; 62, 64; 72, 74) as a gap whose width is smaller than the outside diameter of the coiled end (3a) of the incandescent filament (3),
    characterized in that
    the free U limb (42; 52; 62; 72) is welded to the supply lead wire (4, 5), and
    the end of the incandescent filament (3) projecting beyond the U-shaped supply lead wire end (41; 51; 61; 71) is welded to the supply lead wire (4, 5).
  2. Electric lamp according to Claim 1, characterized in that the width of the gap (45; 55; 65; 75) is 60 percent to 90 percent of the outside diameter of the incandescent filament (3).
  3. Electric lamp according to Claim 1, characterized in that the wire thickness of the flattened U limbs (42, 44; 52, 54; 62, 64; 72, 74) is between 40 percent and 70 percent of the wire thickness of the non-flattened supply lead wire section (43; 53; 63; 73).
  4. Electric lamp according to Claim 1, characterized in that the free U limb (52; 62) is welded to the other U limb (54; 64).
  5. Electric lamp according to Claim 1, characterized in that the free U limb (42; 72) is welded to the non-flattened section (43; 73) of the supply lead wire (4, 5).
EP97951065A 1997-04-18 1997-11-11 Electric lamp Expired - Lifetime EP0914674B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19716158 1997-04-18
DE19716158 1997-04-18
PCT/DE1997/002639 WO1998048448A1 (en) 1997-04-18 1997-11-11 Electric lamp

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EP0914674A1 EP0914674A1 (en) 1999-05-12
EP0914674B1 true EP0914674B1 (en) 2003-06-11

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EP97951065A Expired - Lifetime EP0914674B1 (en) 1997-04-18 1997-11-11 Electric lamp

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US (1) US6191526B1 (en)
EP (1) EP0914674B1 (en)
JP (1) JP2000512802A (en)
KR (1) KR100393462B1 (en)
CN (1) CN1106682C (en)
AT (1) ATE242916T1 (en)
CA (1) CA2255081C (en)
DE (1) DE59710277D1 (en)
ES (1) ES2201335T3 (en)
HU (1) HU222632B1 (en)
NO (1) NO321194B1 (en)
WO (1) WO1998048448A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999060604A1 (en) * 1998-05-20 1999-11-25 Koninklijke Philips Electronics N.V. Incandescent lamp having clamps for coiled filament without mandrel
US6639364B1 (en) * 2000-06-29 2003-10-28 Koninklijke Philips Electronics N.V. Halogen incandescent capsule having filament leg clamped in press seal
EP2202781A1 (en) * 2008-12-23 2010-06-30 Flowil International Lighting (Holding) B.V. Incandescent Lamp and Filament Support Therein

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145186A (en) 1938-07-01 1939-01-24 Gen Electric Connection for filament and lead wires
US2315504A (en) * 1941-05-31 1943-04-06 Tung Sol Lamp Works Inc Miniature incandescent lamp
US3780333A (en) * 1972-12-15 1973-12-18 Gte Sylvania Inc Lamp filament support means
JPH01130254A (en) * 1987-11-16 1989-05-23 Canon Inc Document processor
DE3907277A1 (en) * 1989-03-07 1990-09-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh MERCURY LOW PRESSURE DISCHARGE LAMP
JPH05182641A (en) * 1991-12-27 1993-07-23 Toshiba Lighting & Technol Corp Electrode for bulb and incandescent lamp
JPH06231736A (en) * 1993-02-09 1994-08-19 Toshiba Lighting & Technol Corp Lead wire and electric lamp

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CA2255081A1 (en) 1998-10-29
HUP9901363A3 (en) 2000-08-28
US6191526B1 (en) 2001-02-20
ES2201335T3 (en) 2004-03-16
CN1222249A (en) 1999-07-07
NO321194B1 (en) 2006-04-03
EP0914674A1 (en) 1999-05-12
KR20000016646A (en) 2000-03-25
NO986003D0 (en) 1998-12-18
WO1998048448A1 (en) 1998-10-29
HUP9901363A2 (en) 1999-08-30
CA2255081C (en) 2006-07-25
CN1106682C (en) 2003-04-23
HU222632B1 (en) 2003-09-29
NO986003L (en) 1998-12-18
ATE242916T1 (en) 2003-06-15
JP2000512802A (en) 2000-09-26
KR100393462B1 (en) 2003-09-19
DE59710277D1 (en) 2003-07-17

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