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EP0239006B1 - Incandescent lamp and method for its manufacture - Google Patents

Incandescent lamp and method for its manufacture Download PDF

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Publication number
EP0239006B1
EP0239006B1 EP87104032A EP87104032A EP0239006B1 EP 0239006 B1 EP0239006 B1 EP 0239006B1 EP 87104032 A EP87104032 A EP 87104032A EP 87104032 A EP87104032 A EP 87104032A EP 0239006 B1 EP0239006 B1 EP 0239006B1
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EP
European Patent Office
Prior art keywords
luminous body
current supply
incandescent lamp
halogen incandescent
inner current
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
Application number
EP87104032A
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German (de)
French (fr)
Other versions
EP0239006A2 (en
EP0239006A3 (en
Inventor
Rüdiger Dr. Klam
Rupert Mühlberger
Karl Stadler
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Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Publication of EP0239006A2 publication Critical patent/EP0239006A2/en
Publication of EP0239006A3 publication Critical patent/EP0239006A3/en
Application granted granted Critical
Publication of EP0239006B1 publication Critical patent/EP0239006B1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K3/00Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/06Attaching of incandescent bodies to mount
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K1/00Details
    • H01K1/40Leading-in conductors

Definitions

  • the invention is based on a halogen incandescent lamp according to the preamble of claim 1.
  • US-A-2 830 217 describes a lamp filled with noble gas, in which a power supply made of molybdenum is used, the end of which has a spade-shaped flat with a thickened end.
  • the invention is therefore based on the object of producing halogen incandescent lamps with a secure mechanical and electrical contact between the luminous element and the power supply, the assembly of the luminous element being intended to be very simple to carry out and thus easy to mechanize.
  • the diameter of the inner power supply is slightly, in particular by 5-20%, smaller than the inner diameter of the filament at the ends of the filament enables the filament ends to be threaded easily.
  • the flat near the end of the power supply the greatest width of which is slightly, in particular 5-30%, larger than the inside diameter of the coil is at the ends of the filament, ensures good electrical contact and mechanical hold of the filament throughout the life of the lamp.
  • the filament is advantageously bent away from the power supply end by 90 ° ⁇ 45 °. This results in a laterally acting tensile load on the tensioned luminous element, which in turn improves the contact in the area of the enclosed power supply end and effects an additional holding function.
  • the entire filament is doubled.
  • the inner diameter of the filament at the ends of the filament is to be understood as the inner diameter of the secondary filament.
  • This structure of the filament results in a high elasticity, which in particular supports the holding function of the flat by reducing the inner diameter of the secondary coil when the filament is subjected to tensile stress and thereby holding the filament even more effectively by the flat (self-locking).
  • the luminous body advantageously has an interruption-free interruption near its ends. By means of this interruption, the length of the one to be lit can be determined Clearly define the middle part of the filament. The ends of the filament intended for holding are delimited.
  • FIG. 1 schematically shows the front view of a 220 V halogen incandescent lamp 1 with an output of 150 W. It has a quartz bulb 2, which was filled with a halogen compound and one or more inert gases via a pump stem 3 and on which a metal base 4 was pressed using a pinch seal 5 is attached. Molybdenum foils 6 are melted into the pinch seal 5 and connect the two outer power leads (not visible), made of molybdenum, and electrically connect the two inner power leads 7, made of tungsten, in a vacuum-tight manner.
  • the two inner power supply lines 7 are components of a holding frame 8, which also comprises two coil holders 9 with meandering curvatures 10 and a hook-like part 11.
  • the components of the holding frame 8 are fixed in their position relative to one another by a crossbeam 12 made of quartz glass two filament holders 9 (made of tungsten wire) lie in one plane.
  • the double-coiled filament 13 made of tungsten is divided into several sections.
  • the two end sections 14 are held on the end parts 15 of the inner power supply lines 7.
  • the luminous element 13 is bent away from the inner power supply lines 7 (see FIG. 2).
  • four double-spiral lighting sections 17, which form an M in the projection according to FIG. They are separated from one another by secondary helix-free sections 18, on which the luminous element 13 is spread apart by the frame 8, in particular by the two meandering curvatures 10 of the filament holder 9 and by the hook-like part 11.
  • the spatial arrangement of the luminous element 13 and frame 8 is illustrated by the side view according to FIG. in which the two end parts 15 of the inner power supply lines 7 (only one end part is visible in the projection) are each angled in a plane perpendicular to the reference plane and perpendicular to the orientation of the crossbar 12 in the same direction, while the hook-like part 11 is also in one Plane perpendicular to the reference plane and parallel to the planes of the end parts 15, but in the opposite direction, is angled.
  • the fixture of the luminous body 13 on the end parts 15 of the inner power supply 7 takes place in each case by means of a flat 19 Operation of the flat 19 and its importance in the assembly of the filament on the inner power supply 7 will be explained in more detail below.
  • Figure 3 shows schematically the assembly of the filament 13.
  • the inner diameter of its secondary filament, which has an interruption 16 near the end of the filament, is 600 microns.
  • the inner power supply 7 has a diameter of 550 microns, its total length is about 18 mm.
  • the end part 15 of the inner power supply 7 thus formed is squeezed about 2 mm from the end of the power supply in such a way that the flattening 19 is formed.
  • the squeezing is preferably carried out with the aid of two cylindrical embossing dies which are pressed onto the power supply lines from two sides at the same time.
  • the flat 19 is widened in the plane formed by the inner power supply 7 and end part 15 with a greatest width of approximately 660 ⁇ m and thinned down to 440 ⁇ m perpendicular to this plane.
  • the end of the luminous element 13 and the end part 15 of the inner power supply 7 are now first aligned with one another (FIG. 3a).
  • the luminous element 13 is now plugged onto the end part 15 from one end.
  • At least two, generally about five turns of the secondary helix are pushed from the end section 14 beyond the flat 19 onto the end part 15, as a result of which the luminous element 13 on the end part 15 is supported (Fig. 3c).
  • the other end section 14 of the luminous element 13 is held on the second inner power supply 7 at the same time.
  • Both internal power supply lines 7 are already fixed to the frame 8 with the help of the crossbeam 12 (made of quartz glass) during the filament mounting.
  • the luminous body 13, which is still freely suspended between the end parts 15, is now bent upward in the region of the interruptions 16 (FIG. 3 c) and, as can be understood from FIG. 1, is guided over the curvatures 10 and hung on the hook-like part 11.
  • FIG. 4 An exemplary embodiment of a 110 V halogen incandescent lamp 1ampe with a power of 75 W is shown in FIG. 4. It has essentially the same structure as the halogen incandescent lamp of the first exemplary embodiment, but differs in accordance with the reduced operating voltage in that it is shortened by about half and now in shape of an upside-down V's executed lamp 13 Leucht. This also requires a changed structure of the frame 8 ⁇ , in that the crossbar 12 ⁇ fixes only one helix holder 9 ⁇ with a meandering curvature 10 ⁇ and two internal power supply lines 7 ⁇ (FIG. 5). The two inner power supply lines 7 ⁇ are now each bent in one plane parallel to the plane of the filament holder 9 ⁇ .
  • the luminous element 13 ⁇ can now be tensioned in the middle and flat, the plane being perpendicular to the plane of the filament holder 9 ⁇ .
  • the luminous element is mounted on the inner power supply analogously to FIGS. 3a-c, the power supply diameter now being 440 ⁇ m, the greatest width of the flat portion being 550 ⁇ m and the inner diameter of the secondary coil being 480 ⁇ m.
  • filament lamps without sections or interruptions free of secondary coils, and furthermore internal power supply lines without an angled end part can also be used.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Die Erfindung geht aus von einer Halogenglühlampe nach dem Oberbegriff des Anspruchs 1.The invention is based on a halogen incandescent lamp according to the preamble of claim 1.

Aus der EP-A- 153 776 ist eine Halogenglühlampe mit einem Kolben bekannt, in dem ein gewendelter Leuchtkörper mit gewendelfreien Abschnitten durch ein Gestell gehaltert ist.From EP-A-153 776 a halogen incandescent lamp with a bulb is known in which a coiled filament with non-coiled sections is held by a frame.

Die US-A- 2 830 217 beschreibt eine mit Edelgas gefüllte Lampe, bei der eine Stromzuführung aus Molybdän verwendet wird, deren Ende eine spatenförmige Anflachung mit verdicktem Ende besitzt.US-A-2 830 217 describes a lamp filled with noble gas, in which a power supply made of molybdenum is used, the end of which has a spade-shaped flat with a thickened end.

Es ist bekannt, daß sich bei Halogenglühlampen mit Gestellteilen aus Molybdän die Lebensdauer aufgrund von Kreisprozeßproblemen verringert. Dieses Problem wird üblicherweise dadurch gelöst, daß die Gestellteile, insbesondere die inneren Stromzuführungen, aus Wolfram hergestellt werden. Wegen der hohen Sprödigkeit von Wolfram ist es jedoch nicht möglich, einen, sicheren mechanischen Halt und einen guten elektrischen Kontakt zwischen Stromzuführungen und Leuchtkörper mittels einer Klemmverbindung zu erzielen, wie sie bei den weniger spröden Molybdängestellteilen bekannt ist (z.B. DE-OS 21 26 796).It is known that the life of halogen incandescent lamps with frame parts made of molybdenum is reduced due to cycle problems. This problem is usually solved in that the frame parts, in particular the inner power supply lines, are made of tungsten. However, because of the high brittleness of tungsten, it is not possible to achieve a secure mechanical hold and good electrical contact between the power supply lines and the luminous element by means of a clamp connection, as is known for the less brittle molybdenum frame parts (eg DE-OS 21 26 796) .

Statt dessen wird häufig das Ende des gewendelten Leuchtkörpers auf den Stromzuführungsdraht, dessen Durchmesser etwas kleiner als der Innendurchmesser des Gewendels ist, aufgeschoben. Der mangelhafte mechanische Halt und elektrische Kontakt führt dabei jedoch häufig zu Wackelkontakten, was insbesondere die Dimmbarkeit der Halogenglühlampen erschwert. Die Eigenschaft der Dimmbarkeit ist jedoch bei zahlreichen Anwendungen erwünscht. Bekannte Zusatzmaßnahmen zur Verbesserung dieser Mängel, wie Heißkrimpen oder Verbiegen des Stromzuführungsdrahtes vor dem Aufschieben des Leuchtkörpers zur Erzielung eines Aufhängeeffektes (beides in der US-PS 3 930 177 beschrieben), sind zeit- und kostenaufwendig und/oder für eine Mechanisierung kaum geeignet. Überdies wird der Kontakt nicht im gewünschten Maße verbessert.Instead, the end of the coiled filament is often pushed onto the power supply wire, the diameter of which is slightly smaller than the inside diameter of the coil. The poor mechanical hold and electrical contact leads however, this often leads to loose contacts, which complicates the dimmability of the halogen bulbs in particular. However, the property of dimmability is desirable in numerous applications. Known additional measures to improve these deficiencies, such as hot crimping or bending the power supply wire before pushing on the luminous element in order to achieve a hanging effect (both described in US Pat. No. 3,930,177), are time-consuming and costly and / or hardly suitable for mechanization. Furthermore, the contact is not improved to the desired extent.

Der Erfindung liegt daher die Aufgabe zugrunde, Halogenglühlampen mit einem sicheren mechanischen und elektrischen Kontakt zwischen Leuchtkörper und Stromzuführung herzustellen, wobei die Montage des Leuchtkörpers sehr einfach durchführbar und somit leicht mechanisierbar sein soll.The invention is therefore based on the object of producing halogen incandescent lamps with a secure mechanical and electrical contact between the luminous element and the power supply, the assembly of the luminous element being intended to be very simple to carry out and thus easy to mechanize.

Diese Aufgabe wird bei einer Halogenglühlampe erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved in a halogen incandescent lamp according to the invention by the characterizing features of claim 1.

Dadurch, daß der Durchmesser der inneren Stromzuführung geringfügig, insbesondere um 5-20 %, kleiner als der Innendurchmesser der Wendel an den Enden des Leuchtkörpers ist, wird ein leichtes Auffädeln der Leuchtkörperenden ermöglicht.The fact that the diameter of the inner power supply is slightly, in particular by 5-20%, smaller than the inner diameter of the filament at the ends of the filament enables the filament ends to be threaded easily.

Die Anflachung in der Nähe des Stromzuführungsendes, deren größte Breite geringfügig, insbesondere 5-30 %, größer als der Innendurchmesser der Wendel an den Enden des Leuchtkörpers ist, bewirkt einen guten elektrischen Kontakt und mechanischen Halt des Leuchtkörpers während der gesamten Lebensdauer der Lampe.The flat near the end of the power supply, the greatest width of which is slightly, in particular 5-30%, larger than the inside diameter of the coil is at the ends of the filament, ensures good electrical contact and mechanical hold of the filament throughout the life of the lamp.

Eine Abwinkelung des Endbereichs der inneren Stromzuführung, insbesondere um 45°-90°, auf einer Länge, die die Entfernung der Anflachung vom Stromzuführungsende merklich übertrifft, erleichtert das Einfädeln des Leuchtkörpers.Angling the end region of the inner power supply line, in particular by 45 ° -90 °, over a length which significantly exceeds the distance of the flat from the power supply end, facilitates the threading in of the luminous element.

Vorteilhaft ist der Leuchtkörper vom Stromzuführungsende um 90° ± 45° weggebogen. Dadurch wird eine seitlich wirkende Zugbelastung des gespannten Leuchtkörpers erreicht, was wiederum den Kontakt im Bereich des umfaßten Stromzuführungsendes verbessert und eine zusätzliche Haltefunktion bewirkt.The filament is advantageously bent away from the power supply end by 90 ° ± 45 °. This results in a laterally acting tensile load on the tensioned luminous element, which in turn improves the contact in the area of the enclosed power supply end and effects an additional holding function.

Bevorzugt ist nicht nur der Endabschnitt, sondern der gesamte Leuchtkörper doppelt gewendelt. Unter dem Innendurchmesser der Wendel an den Enden des Leuchtkörpers ist der Innendurchmesser des Sekundärgewendels zu verstehen. Diese Struktur des Leuchtkörpers bewirkt eine hohe Elastizität, die insbesondere die Haltefunktion der Anflachung unterstützt, indem bei Zugbelastung des Leuchtkörpers sich der Innendurchmesser des Sekundärgewendels verringert und der Leuchtkörper dadurch noch wirksamer von der Anflachung gehaltert wird (Selbsthemmung). Vorteilhaft weist der Leuchtkörper in der Nähe seiner Enden eine sekundärgewendelfreie Unterbrechung auf. Mittels dieser Unterbrechung läßt sich die Länge des zum Leuchten bestimmten Mittelteils des Leuchtkörpers eindeutig definieren. Die zum Haltern bestimmten Enden des Leuchtkörpers sind abgegrenzt.Preferably, not only the end section, but the entire filament is doubled. The inner diameter of the filament at the ends of the filament is to be understood as the inner diameter of the secondary filament. This structure of the filament results in a high elasticity, which in particular supports the holding function of the flat by reducing the inner diameter of the secondary coil when the filament is subjected to tensile stress and thereby holding the filament even more effectively by the flat (self-locking). The luminous body advantageously has an interruption-free interruption near its ends. By means of this interruption, the length of the one to be lit can be determined Clearly define the middle part of the filament. The ends of the filament intended for holding are delimited.

Die Erfindung wird nachfolgend anhand von fünf Figuren, die zwei Ausführungsbeispiele beinhalten, näher beschrieben. Es zeigt

Figur 1
die Frontalansicht einer Halogenglühlampe gemäß der Erfindung
Figur 2
die Seitenansicht der Halogenglühlampe nach Figur 1
Figur 3a-c
ein Ausführungsbeispiel für die Montage des Leuchtkörpers auf die innere Stromzuführung gemäß der Erfindung
Figur 4
die Frontalansicht eines anderen Ausführungsbeispiels einer Halogenglühlampe gemäß der Erfindung
Figur 5
die Seitenansicht der Halogenglühlampe nach Figur 4
The invention is described in more detail below with reference to five figures, which contain two exemplary embodiments. It shows
Figure 1
the front view of a halogen lamp according to the invention
Figure 2
the side view of the halogen incandescent lamp of Figure 1
Figure 3a-c
an embodiment for the assembly of the filament on the inner power supply according to the invention
Figure 4
the front view of another embodiment of a halogen lamp according to the invention
Figure 5
the side view of the halogen incandescent lamp of Figure 4

Figur 1 zeigt schematisch die Frontalansicht einer 220 V-Halogenglühlampe 1 mit einer Leistung von 150 W. Sie besitzt einen Quarzkolben 2, der über einen Pumpstengel 3 mit einer Halogenverbindung und einem oder mehreren Inertgasen gefüllt wurde und an dem ein Metallsockel 4 über eine Quetschdichtung 5 befestigt ist. In die Quetschdichtung 5 sind Molybdänfolien 6 eingeschmolzen, die die beiden äüßeren Stromzuführungen (nicht sichtbar), aus Molybdän gefertigt, und die beiden inneren Stromzuführungen 7, aus Wolfram hergestellt, vakuumdicht miteinander elektrisch verbinden. Die beiden inneren Stromzuführungen 7 sind Bestandteile eines Haltegestells 8, das außerdem zwei Wendelhalter 9 mit mäanderförmigen Krümmungen 10 sowie ein hakenartiges Teil 11 umfaßt. Die Bestandteile des Haltegestells 8 sind in ihrer Lage zueinander durch einen Querbalken 12 aus Quarzglas fixiert, wobei die beiden Wendelhalter 9 (aus Wolframdraht) in einer Ebene liegen. Der doppeltgewendelte Leuchtkörper 13 aus Wolfram ist in mehrere Abschnitte gegliedert. Die beiden Endabschnitte 14 sind an den Endteilen 15 der inneren Stromzuführungen 7 gehaltert. Im Bereich einer Unterbrechung 16 des Sekundärgewendels ist der Leuchtkörper 13 von den inneren Stromzuführungen 7 weggebogen (s. Fig. 2). Es schließen sich vier doppeltgewendelte Leuchtabschnitte 17 an, die in der Projektion nach Figur 1 ein M bilden. Sie sind durch sekundärgewendelfreie Abschnitte 18 voneinander getrennt, an denen der Leuchtkörper 13 vom Gestell 8, insbesondere von den beiden mäanderförmigen Krümmungen 10 der Wendelhalter 9 und vom hakenartigen Teil 11, gespreizt wird.FIG. 1 schematically shows the front view of a 220 V halogen incandescent lamp 1 with an output of 150 W. It has a quartz bulb 2, which was filled with a halogen compound and one or more inert gases via a pump stem 3 and on which a metal base 4 was pressed using a pinch seal 5 is attached. Molybdenum foils 6 are melted into the pinch seal 5 and connect the two outer power leads (not visible), made of molybdenum, and electrically connect the two inner power leads 7, made of tungsten, in a vacuum-tight manner. The two inner power supply lines 7 are components of a holding frame 8, which also comprises two coil holders 9 with meandering curvatures 10 and a hook-like part 11. The components of the holding frame 8 are fixed in their position relative to one another by a crossbeam 12 made of quartz glass two filament holders 9 (made of tungsten wire) lie in one plane. The double-coiled filament 13 made of tungsten is divided into several sections. The two end sections 14 are held on the end parts 15 of the inner power supply lines 7. In the area of an interruption 16 of the secondary filament, the luminous element 13 is bent away from the inner power supply lines 7 (see FIG. 2). This is followed by four double-spiral lighting sections 17, which form an M in the projection according to FIG. They are separated from one another by secondary helix-free sections 18, on which the luminous element 13 is spread apart by the frame 8, in particular by the two meandering curvatures 10 of the filament holder 9 and by the hook-like part 11.

Die räumliche Anordnung von Leuchtkörper 13 und Gestell 8 verdeutlicht die Seitenansicht gemäß Figur 2. Zur Vermeidung von Überschlägen sind die Endabschnitte 14 und der mittig gelegene sekundärgewendelfreie Abschnitt 18 aus der von den Wendelhaltern 9 definierten Ebene - die im folgenden als Bezugsebene dienen soll - herausgeführt, in dem die beiden Endteile 15 der inneren Stromzuführungen 7 (in der Projektion ist nur ein Endteil sichtbar) jeweils in eine Ebene senkrecht zur Bezugsebene und senkrecht zur Orientierung des Querbalkens 12 nach der gleichen Richtung hin abgewinkelt sind, während das hakenartige Teil 11 ebenfalls in eine Ebene senkrecht zur Bezugsebene und parallel zu den Ebenen der Endteile 15, jedoch in die entgegengesetzte Richtung, abgewinkelt ist. Die Halterung des Leuchtkörpers 13 an den Endteilen 15 der inneren Stromzuführung 7 erfolgt dabei jeweils mittels einer Anflachung 19. Die Wirkungsweise der Anflachung 19 und ihre Bedeutung bei der Montage des Leuchtkörpers auf die innere Stromzuführung 7 soll im folgenden näher erläutert werden.The spatial arrangement of the luminous element 13 and frame 8 is illustrated by the side view according to FIG. in which the two end parts 15 of the inner power supply lines 7 (only one end part is visible in the projection) are each angled in a plane perpendicular to the reference plane and perpendicular to the orientation of the crossbar 12 in the same direction, while the hook-like part 11 is also in one Plane perpendicular to the reference plane and parallel to the planes of the end parts 15, but in the opposite direction, is angled. The fixture of the luminous body 13 on the end parts 15 of the inner power supply 7 takes place in each case by means of a flat 19 Operation of the flat 19 and its importance in the assembly of the filament on the inner power supply 7 will be explained in more detail below.

Figur 3 zeigt schematisch die Montage des Leuchtkörpers 13. Der Innendurchmesser seines Sekundärgewendels, das in der Nähe des Leuchtkörperendes eine Unterbrechung 16 aufweist, beträgt 600 µm. Die innere Stromzuführung 7 weist einen Durchmesser von 550 µm auf, ihre gestreckte Gesamtlänge beträgt etwa 18 mm. An dem dem Leuchtkörper 13 zugewandten Ende ist sie Zunächst auf einer Länge von etwa 5 mm um 60° abgewinkelt worden. Das dadurch gebildete Endteil 15 der inneren Stromzuführung 7 wird etwa 2 mm vom Ende der Stromzuführung entfernt derartig gequetscht, so daß die Anflachung 19 entsteht. Das Quetschen erfolgt dabei bevorzugt mit Hilfe von zwei zylindrischen Prägestempeln, die gleichzeitig von zwei Seiten an die Stromzuführungen angepreßt werden. Die Anflachung 19 ist in der durch die innere Stromzuführung 7 und Endteil 15 gebildet Ebene verbreitert mit einer Größten Breite von etwa 660 µm und senkrecht zu dieser Ebene bis auf 440 µm verdünnt.Figure 3 shows schematically the assembly of the filament 13. The inner diameter of its secondary filament, which has an interruption 16 near the end of the filament, is 600 microns. The inner power supply 7 has a diameter of 550 microns, its total length is about 18 mm. At the end facing the luminous element 13, it was first angled by 60 ° over a length of approximately 5 mm. The end part 15 of the inner power supply 7 thus formed is squeezed about 2 mm from the end of the power supply in such a way that the flattening 19 is formed. The squeezing is preferably carried out with the aid of two cylindrical embossing dies which are pressed onto the power supply lines from two sides at the same time. The flat 19 is widened in the plane formed by the inner power supply 7 and end part 15 with a greatest width of approximately 660 μm and thinned down to 440 μm perpendicular to this plane.

Bei der Montage werden nun zunächst (Fig. 3a) das Ende des Leuchtkörpers 13 und das Endteil 15 der inneren Stromzuführung 7 zueinander ausgerichtet. Gemäß Figur 3b wird nun der Leuchtkörper 13 von einem Ende her auf das Endteil 15 aufgesteckt. Dabei werden mindestens zwei, im allgemeinen etwa fünf Windungen des Sekundärgewendels vom Endabschnitt 14 über die Anflachung 19 hinaus auf das Endteil 15 aufgeschoben, wodurch der Leuchtkörper 13 auf dem Endteil 15 gehaltert ist (Fig. 3c). In ähnlicher Art und Weise wird das Haltern des anderen Endabschnitts 14 des Leuchtkörpers 13 an der zweiten inneren Stromzuführung 7 gleichzeitig vorgenommen. Beide Innenstromzuführungen 7 sind bereits während der Leuchtkörpermontage mit Hilfe des Querbalkens 12 (aus Quarzglas) am Gestell 8 fixiert. Der zunächst noch zwischen den Endteilen 15 frei hängende Leuchtkörper 13 wird nun im Bereich der Unterbrechungen 16 nach oben gebogen (Fig. 3c) und, wie aus Figur 1 verstanden werden kann, über die Krümmungen 10 geführt und am hakenartigen Teil 11 eingehängt.During assembly, the end of the luminous element 13 and the end part 15 of the inner power supply 7 are now first aligned with one another (FIG. 3a). According to FIG. 3b, the luminous element 13 is now plugged onto the end part 15 from one end. At least two, generally about five turns of the secondary helix are pushed from the end section 14 beyond the flat 19 onto the end part 15, as a result of which the luminous element 13 on the end part 15 is supported (Fig. 3c). In a similar manner, the other end section 14 of the luminous element 13 is held on the second inner power supply 7 at the same time. Both internal power supply lines 7 are already fixed to the frame 8 with the help of the crossbeam 12 (made of quartz glass) during the filament mounting. The luminous body 13, which is still freely suspended between the end parts 15, is now bent upward in the region of the interruptions 16 (FIG. 3 c) and, as can be understood from FIG. 1, is guided over the curvatures 10 and hung on the hook-like part 11.

Ein Ausführungsbeispiel einer 110 V-Halogenglühlampe 1ʹ mit einer Leistung von 75 W zeigt Figur 4. Sie besitzt im wesentlichen den gleichen Aufbau wie die Halogenglühlampe des ersten Ausführungsbeispiels, unterscheidet sich jedoch entsprechend der verringerten Betriebsspannung in dem etwa auf die Hälfte verkürzten und nunmehr in Form eines auf dem Kopf stehenden V's ausgeführten Leuchtkörpers 13ʹ. Dies bedingt auch einen veränderten Aufbau des Gestells 8ʹ, indem der Querbalken 12ʹ nur einen Wendelhalter 9ʹ mit einer mäanderförmigen Krümmung 10ʹ und zwei innere Stromzuführungen 7ʹ zuinander fixiert (Fig. 5). Die beiden inneren Stromzuführungen 7ʹ sind jetzt jeweils in einer Ebene parallel zur Ebene des Wendelhalters 9ʹ gebogen.An exemplary embodiment of a 110 V halogen incandescent lamp 1ampe with a power of 75 W is shown in FIG. 4. It has essentially the same structure as the halogen incandescent lamp of the first exemplary embodiment, but differs in accordance with the reduced operating voltage in that it is shortened by about half and now in shape of an upside-down V's executed lamp 13 Leucht. This also requires a changed structure of the frame 8ʹ, in that the crossbar 12ʹ fixes only one helix holder 9ʹ with a meandering curvature 10ʹ and two internal power supply lines 7ʹ (FIG. 5). The two inner power supply lines 7ʹ are now each bent in one plane parallel to the plane of the filament holder 9ʹ.

Zwischen dem abgewinkelten Endteil 15ʹ, das die Anflachung 19ʹ enthält, und dem restlichen Stromzuführungskörper ist dabei ein zusätzliches, jedoch im Vergleich zum Endteil 15ʹ kürzeres Zwischenstück 20 entgegengesetzt abgewinkelt, so daß in der Projektion gemäß Figur 5 das Endteil 15ʹ die Mittelachse A des Hüllkolbens 2ʹ schneiden kann, wobei vom Zwischenstück 20 aus gesehen die Anflachung 19ʹ vor dem Schnittpunkt liegen muß. Somit kann der Leuchtkörper 13ʹ jetzt mittig und eben, wobei die Ebene senkrecht zur Ebene des Wendelhalters 9ʹ liegt, gespannt werden. Die Montage des Leuchtkörpers auf die innere Stromzuführung erfolgt analog den Figuren 3a-c, wobei jetzt der Stromzuführungsdurchmesser 440 µm, die größte Breite der Anflachung 550 µm und der Innendurchmesser des Sekundärgewendels 480 µm beträgt.Between the angled end part 15ʹ, which contains the flat 19ʹ, and the rest of the power supply body is an additional, but in comparison to the end part 15ʹ shorter intermediate piece 20 angled in the opposite direction, so that in the projection 5, the end part 15ʹ can cut the central axis A of the enveloping piston 2ʹ, the flat 19ʹ seen from the intermediate piece 20 before the intersection. Thus, the luminous element 13ʹ can now be tensioned in the middle and flat, the plane being perpendicular to the plane of the filament holder 9ʹ. The luminous element is mounted on the inner power supply analogously to FIGS. 3a-c, the power supply diameter now being 440 μm, the greatest width of the flat portion being 550 μm and the inner diameter of the secondary coil being 480 μm.

Neben diesen bevorzugten Ausführungsbeispielen kann die Erfindung noch auf viele andere Beispiele angewendet werden. Insbesondere können auch leuchtkörper ohne sekundärgewendelfreie Abschnitte oder Unterbrechungen, des weiteren innere Stromzuführungen ohne abgewinkeltes Endteil verwendet werden.In addition to these preferred embodiments, the invention can be applied to many other examples. In particular, filament lamps without sections or interruptions free of secondary coils, and furthermore internal power supply lines without an angled end part, can also be used.

Claims (9)

  1. Halogen incandescent lamp (1; 1') with a bulb (2; 2') and a coiled luminous body (13; 13') which can have portions (18) free from coiling, the luminous body (13; 13') being held by a mount (8, 8') which comprises at least two inner current supply leads (7; 7') made of tungsten and is connected to outer current supply leads, characterised by the combination of the following features:
    - at least at its ends, the luminous body (13; 13') is in the form of a coiled coil, the diameter of the inner current supply lead (7; 7') is slightly less than the inside diameter of the secondary coiling at the ends of the luminous body (13; 13')
    - in the vicinity of the end facing the luminous body, the two inner current supply leads (7; 7') each have a flattened portion (19; 19'), the greatest width of which is slightly greater than the inside diameter of the secondary coiling at the ends of the luminous body (13; 13')
    - the end of the luminous body (13; 13') surrounds the two inner current supply leads (7; 7') to a point beyond the flattened portion (19; 19'), the luminous body (13; 13') being under tension, with the result that the inside diameter of the secondary coiling is reduced due to its elasticity and the luminous body (13; 13') is thereby held in a self-locking manner by the flattened portion (19; 19').
  2. Halogen incandescent lamp according to Claim 1, characterised in that, at the end facing the luminous body (13; 13'), the two inner current supply leads (7; 7') are angled over a length which markedly exceeds the distance of the flattened portion (19; 19') from this end.
  3. Halogen incandescent lamp according to Claim 2, characterised in that the end of the inner current supply leads (7) is angled at an angle of 45°-90°.
  4. Halogen incandescent lamp according to Claim 1, characterised in that all the coiled portions of the luminous body (13; 13') are in the form of a coiled coil.
  5. Halogen incandescent lamp according to Claim 4, characterised in that, in the vicinity of each of its ends, the luminous body (13) has an separating zone (16) free from secondary coiling.
  6. Halogen incandescent lamp according to Claim 1, characterised in that the diameter of the inner current supply leads (7; 7') is 5-20% less than the inside diameter of the coil at the ends of the luminous body (13; 13').
  7. Halogen incandescent lamp according to Claim 1, characterised in that the greatest width of the flattened portion (19; 19') is 5-30% greater than the inside diameter of the coil at the ends of the luminous body (13; 13').
  8. Halogen incandescent lamp according to Claim 1, characterised in that the luminous body (13; 13') is bent away from the end of the inner current supply lead (7; 7') at an angle of 90° ± 45°.
  9. Method for the manufacture of a halogen incandescent lamp according to Claim 1, characterised by the following steps:
    - pinching of the inner current supply leads while supplying heat, in each case in the vicinity of their ends facing the luminous body, resulting in a flattened portion
    - alignment of the current supply end and the luminous body relative to one another
    - pushing the luminous body onto the end of the inner current supply lead, at least two turns of the secondary coiling also being pushed on beyond the flattened portion.
EP87104032A 1986-03-24 1987-03-19 Incandescent lamp and method for its manufacture Expired - Lifetime EP0239006B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863609908 DE3609908A1 (en) 1986-03-24 1986-03-24 HALOGEN BULB AND METHOD FOR THEIR PRODUCTION
DE3609908 1986-03-24

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EP0239006A2 EP0239006A2 (en) 1987-09-30
EP0239006A3 EP0239006A3 (en) 1989-10-25
EP0239006B1 true EP0239006B1 (en) 1992-12-23

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US (1) US4812710A (en)
EP (1) EP0239006B1 (en)
JP (1) JP2536863B2 (en)
DE (2) DE3609908A1 (en)

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US5140217A (en) * 1990-09-07 1992-08-18 North American Philips Corporation Electric lamp having a push-in filament insert for filament mounting
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US6639364B1 (en) * 2000-06-29 2003-10-28 Koninklijke Philips Electronics N.V. Halogen incandescent capsule having filament leg clamped in press seal
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JP2008544461A (en) * 2005-06-24 2008-12-04 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 Halogen incandescent lamp and method of manufacturing such a lamp
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Also Published As

Publication number Publication date
DE3609908A1 (en) 1987-10-01
US4812710A (en) 1989-03-14
JPS62232852A (en) 1987-10-13
DE3783153D1 (en) 1993-02-04
EP0239006A2 (en) 1987-09-30
JP2536863B2 (en) 1996-09-25
EP0239006A3 (en) 1989-10-25

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