EP0780883A1 - Double side-pinched lamp - Google Patents

Double side-pinched lamp Download PDF

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Publication number
EP0780883A1
EP0780883A1 EP96118985A EP96118985A EP0780883A1 EP 0780883 A1 EP0780883 A1 EP 0780883A1 EP 96118985 A EP96118985 A EP 96118985A EP 96118985 A EP96118985 A EP 96118985A EP 0780883 A1 EP0780883 A1 EP 0780883A1
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EP
European Patent Office
Prior art keywords
lamp
pinched
contact element
electric lamp
sides according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96118985A
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German (de)
French (fr)
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EP0780883B1 (en
Inventor
Helmut Berger
Jürgen Eder
Hans Liermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/52—Means forming part of the tube or lamps for the purpose of providing electrical connection to it directly applied to or forming part of the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/44—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp directly applied to, or forming part of, the vessel

Definitions

  • the invention is based on a lamp pinched on both sides according to the preamble of claim 1.
  • incandescent and discharge lamps include both incandescent and discharge lamps. These are, in particular, halogen incandescent lamps in the form of a festoon, but also discharge lamps, in particular metal halide lamps, for example UV lamps for cosmetic and medical applications. Another area of application is high pressure sodium lamps.
  • Such lamps are usually provided with bases which consist of a ceramic sleeve and a metallic connection contact held therein.
  • the connection contact is usually shaped like a disk, in particular button-like or plate-like.
  • the sleeve is usually slotted with the slit pushed onto the pinch. It is attached to the bruise with putty.
  • putty has some disadvantages.
  • the connection thus achieved is not sufficiently reliable at high temperature loads.
  • the acidic environment of the putty and residues of solvents can corrode the power supply. For this reason, attempts have already been made to fasten the ceramic sleeve without cement (see, for example, EP-A 547 683).
  • the manufacture of such lamps is very complicated and therefore time-consuming and costly.
  • the advantage of the present invention is that the ceramic sleeve material can now be saved completely and thus also on putty can be completely dispensed with.
  • the time-consuming baking out of the base cement is completely eliminated.
  • the molding of the glass base sleeve can preferably be carried out at the same time as the squeezing step.
  • the double-pinched electric lamp consists of a vacuum-sealed, elongated lamp bulb that defines a longitudinal axis. It is equipped with press seals at its two opposite ends, each press seal enclosing a press film that connects the inner and outer power supply lines. Lamp bases are attached to the outer ends of the pinch seals. These consist of a sleeve which is formed from the material of the lamp bulb and which is molded onto the outer end of the pinch seal. This sleeve has an inner and outer diameter, the wall thickness of the sleeve depending on the type being on the order of about one millimeter. A contact element is fastened inside the sleeve and is connected in an electrically conductive manner to the external power supply. The contact element extends essentially transversely to the lamp axis.
  • the basic shape of the contact element is disc-like. Forms derived therefrom, such as contact elements similar to mushrooms, pencils or knives, are also particularly suitable.
  • the element is fastened in the sleeve in that at least part of the edge of the contact element is embedded in the sleeve, that is to say melted or squeezed.
  • the distance of the edge of the disk-like body from its center, ie its radius changes over the circumference. It changes in particular legally or periodically.
  • This property is particularly important when there is practically no metallic material for the contact element, which would be adapted to the thermal expansion coefficient of the piston material (generally quartz glass). A mismatch would soon lead to cracks in the bulb material (quartz glass) during operation, which would shorten the life of the lamp.
  • a suitable material for the contact material is stainless steel (V2A, especially also nickel-plated) or nickel or copper (possibly silver-plated or gold-plated).
  • the minimum radius of the element is smaller than the inner radius of the sleeve.
  • the contact element has a shamrock-like, elliptical, triangular-like or n-corner shape.
  • the corners of the contact element are rounded. In this way, tensions can be minimized, especially when both techniques are used simultaneously.
  • the contact element is anchored very reliably in the glass sleeve.
  • the external power supply that connects the squeeze film to the contact element can in principle be implemented in two different ways.
  • the external power supply is a wire.
  • the contact element advantageously has an eyelet-like extension (neck part) into which the wire can be inserted.
  • a second variant is to angle the wire-shaped power supply and to weld the long side of the angle piece to the contact element. Finally, the contact element can also be butt-welded directly to the wire.
  • the external power supply is a film, in particular an extension of the squeeze film.
  • the usual squeeze film is stable enough to take on the task of external power supply.
  • an extension part of the squeeze film is preferably angled, again the longitudinal side of the angle piece being welded to the contact element.
  • the contact element In the event that part of the external power supply is bent, it is advantageous for the contact element to be bulged toward the power supply.
  • the elbow can be welded well to this concave curvature.
  • the edge of the contact element has a thickness between 0.3 and 0.8 mm. In a particularly preferred embodiment, this dimensioning rule applies to the entire contact element.
  • the production of such bases from glass sleeves can advantageously be integrated into the usual production process for lamps of the type described, for example (with the aid of a four-jaw squeezing machine) in EP-A 451 647 is described.
  • the jaws now each contain an integrated molding device which not only forms the pinch, but also the glass sleeve.
  • the end of the lamp bulb in particular also the area of the later glass sleeve, is brought to the deformation temperature.
  • the surface tension results in a defined self-deformation of the piston end, so that the pipe diameter constricts there.
  • Due to the shaped jaws adapted to the intended base shape the piston is now closed by the pinch jaws.
  • the base geometry is embossed, the contact element being held in the right place by means of negative pressure or using pliers.
  • a defined inner diameter of the glass sleeve is achieved by suitably chosen processing parameters.
  • FIG. 1 shows two views of a halogen incandescent lamp squeezed at 90 °. It consists of a cylindrical bulb 1, in which a luminous element 2 is arranged axially. It is held in the piston 1 by knobs 10.
  • the luminous element 2 consists of luminous sections 3 with a small slope, which are separated by non-luminous sections 4 with a large slope are separated.
  • the ends 5 of the filament also consist of non-illuminating sections with a large slope.
  • the ends 5 are embedded directly in the squeeze 6 in their function as an internal power supply and are connected there with a squeeze film 7.
  • the end 8 of the film 7 facing the filament is bent inside the pinch 6, the filament end 5 being inserted into the bend 9 and thus making an electrical contact with the film 7 purely mechanically.
  • the film is 2.5 ⁇ m thick.
  • a tubular glass sleeve 11 with an outer diameter of 7 mm and an inner diameter of 5 mm is molded onto the outside of the pinch 6 as a base.
  • the sleeve 11 is about 7 mm long. It is therefore narrower than the broad side of the pinch 6, but wider than the narrow side of the pinch 6. Accordingly, there is a transition zone 12 between the pinch 6 and the sleeve 11.
  • a disk-like contact element 13 which is made of sheet steel (V2A) with a thickness of 0.4 mm (see FIG. 2), is embedded in the sleeve 11 transversely to the lamp axis at a depth of 3 mm from the sleeve end. It has a cloverleaf shape, the maximum radius of the disc 13 (Rmax) being 2.7 mm and the minimum radius (Rmin) being 2.0 mm. The latter is reached on the floor by four troughs 16 each. The troughs 16 are punched out of the disk as concave arcs. The troughs 16 serve in particular as a grip aid for a holder by means of pliers.
  • a hollow neck part 14 is attached to the rear of the element 13. Between the film 7 and element 13, a molybdenum wire with a diameter of 0.6 mm is arranged as an external power supply 15, which is welded to the neck part 14.
  • FIG. 3 shows further possible basic shapes for the contact element. Specifically, this is an elliptical shape 17 (FIG. 3a), a triangle-like shape 18 (FIG. 3b) and a square-like shape 19 (FIG. 3c).
  • the basic shape of the latter is a 0.5 mm thick disc which has a concave central bulge 27 with a diameter of 3 mm. The largest diameter of the disc is 5.4 mm, its smallest diameter is 5 mm. The corners of the triangle and quadrangle are rounded.
  • the contact element 20 is bulged in a plate shape, while the wire-shaped outer power supply 21 is angled within the sleeve 11 (22).
  • the long side of the angled part 22 is connected to the rear of the contact element 20 by means of resistance welding.
  • a wire-shaped external power supply 25 can also be butt-welded directly to the contact element 26 in the region of the bulge 27 (FIG. 5).
  • FIG. 6 An exemplary embodiment of a metal halide lamp is shown in FIG. 6.
  • the bulb made of quartz glass in the form of a barrel body 30 includes two electrodes 31 in addition to a metal halide filling.
  • the piston ends are sealed by crushing 32, in which foils 33 are embedded.
  • the external power supply is formed here by an extension part 34 of the squeeze film 33.
  • the extension part 34 is angled in the area of the glass sleeve 11.
  • the angled part 35 is welded with its long side 36 to the rear of the bulbous contact element 26.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

The lamp has a vacuum-tight bulb (1) which defines the longitudinal axis. The seal at each neck surrounds a foil (7) with inner and outer current lead-throughs (5,15). At the end of each seal(6) is a socket, joined to the corresponding outer lead-through. The socket is a shell (11) formed from the same material as the bulb, formed on the outer end of the seal. The contact (13) extends longitudinally and is fastened to the inside of the shell. The contact is like a disc. At least part of its edge is sealed in the shell. The edge varies in radius according to a specific pattern, being clover-leaf, elliptical, or triangular, etc in contour.

Description

Die Erfindung geht aus von einer zweiseitig gequetschten Lampe gemäß dem Oberbegriff des Anspruchs 1.The invention is based on a lamp pinched on both sides according to the preamble of claim 1.

Darunter sind sowohl Glühlampen als auch Entladungslampen zu verstehen. Es handelt sich dabei insbesondere um Halogenglühlampen in Soffittenform, aber auch um Entladungslampen, insbesondere Metallhalogenidlampen, beispielsweise UV-Strahler für kosmetische und medizinische Anwendungen. Ein weiteres Anwendungsgebiet sind Natriumhochdrucklampen.This includes both incandescent and discharge lamps. These are, in particular, halogen incandescent lamps in the form of a festoon, but also discharge lamps, in particular metal halide lamps, for example UV lamps for cosmetic and medical applications. Another area of application is high pressure sodium lamps.

Üblicherweise sind derartige Lampen mit Sockeln versehen, die aus einer keramischen Hülse und einem darin gehaltenen metallischen Anschlußkontakt bestehen. Meist ist der Anschlußkontakt scheibenähnlich geformt, insbesondere knopfartig oder tellerartig. Die Hülse ist normalerweise geschlitzt, wobei der Schlitz auf die Quetschung aufgeschoben ist. Sie ist mittels Kitt an der Quetschung befestigt. Die Verwendung von Kitt ist mit einigen Nachteilen behaftet. Insbesondere ist die damit erzielte Verbindung bei hoher Temperaturbelastung nicht genügend zuverlässig. Weiterhin können das saure Milieu des Kitts und Reste von Lösungsmitteln die Stromzuführung korrodieren. Aus diesem Grund wurde bereits versucht, die keramische Hülse kittlos zu befestigen (siehe beispielsweise EP-A 547 683). Die Herstellung derartiger Lampen ist jedoch sehr kompliziert und damit zeit- und kostenaufwendig.Such lamps are usually provided with bases which consist of a ceramic sleeve and a metallic connection contact held therein. The connection contact is usually shaped like a disk, in particular button-like or plate-like. The sleeve is usually slotted with the slit pushed onto the pinch. It is attached to the bruise with putty. The use of putty has some disadvantages. In particular, the connection thus achieved is not sufficiently reliable at high temperature loads. Furthermore, the acidic environment of the putty and residues of solvents can corrode the power supply. For this reason, attempts have already been made to fasten the ceramic sleeve without cement (see, for example, EP-A 547 683). However, the manufacture of such lamps is very complicated and therefore time-consuming and costly.

Es ist Aufgabe der vorliegenden Erfindung, eine zweiseitig gequetschte Lampe gemäß dem Oberbegriff des Anspruchs 1 bereitzustellen, die zeit- und kostengünstig hergestellt werden kann und die sich insbesondere gut für die Automatisierung eignet.It is an object of the present invention to provide a lamp pinched on both sides, which can be produced in a time and cost-effective manner and which is particularly well suited for automation.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.This object is achieved by the characterizing features of claim 1. Particularly advantageous configurations can be found in the dependent claims.

Der Vorteil der vorliegenden Erfindung besteht darin, daß das keramische Hülsenmaterial jetzt völlig eingespart werden kann und damit auch auf Kitt vollständig verzichtet werden kann. Das zeitaufwendige Ausheizen des Sockelkitts entfällt völlig. Das Formen der Glassockelhülse kann bevorzugt gleichzeitig mit dem Fertigungsschritt des Quetschens durchgeführt werden.The advantage of the present invention is that the ceramic sleeve material can now be saved completely and thus also on putty can be completely dispensed with. The time-consuming baking out of the base cement is completely eliminated. The molding of the glass base sleeve can preferably be carried out at the same time as the squeezing step.

Erfindungsgemäß besteht die zweiseitig gequetschte elektrische Lampe aus einem vakuumdicht abgeschlossenen, längsgestreckten Lampenkolben, der eine Längsachse definiert. Er ist an seinen beiden einander gegenüberliegenden Enden mit Quetschdichtungen ausgestattet, wobei jede Quetschdichtung eine Quetschfolie umschließt, die innere und äußere Stromzuführungen miteinander verbindet. An den äußeren Enden der Quetschdichtungen sind jeweils Lampensockel angebracht. Diese bestehen aus einer Hülse, die aus dem Material des Lampenkolbens gebildet ist und die an das äußere Ende der Quetschdichtung angeformt ist. Diese Hülse besitzt einen inneren und äußeren Durchmesser, wobei die Wandstärke der Hülse typenspezifisch in der Größenordnung von etwa einem Millimeter liegt. Im Innern der Hülse ist ein Kontaktelement befestigt, das mit der äußeren Stromzuführung elektrisch leitend verbunden ist. Das Kontaktelement erstreckt sich im wesentlichen quer zur Lampenachse.According to the invention, the double-pinched electric lamp consists of a vacuum-sealed, elongated lamp bulb that defines a longitudinal axis. It is equipped with press seals at its two opposite ends, each press seal enclosing a press film that connects the inner and outer power supply lines. Lamp bases are attached to the outer ends of the pinch seals. These consist of a sleeve which is formed from the material of the lamp bulb and which is molded onto the outer end of the pinch seal. This sleeve has an inner and outer diameter, the wall thickness of the sleeve depending on the type being on the order of about one millimeter. A contact element is fastened inside the sleeve and is connected in an electrically conductive manner to the external power supply. The contact element extends essentially transversely to the lamp axis.

Die Grundform des Kontaktelements ist scheibenähnlich. Insbesondere eignen sich auch davon abgeleitete Formen wie pilz-, stift- oder messerähnliche Kontaktelemente. Die Befestigung des Elements in der Hülse erfolgt dadurch, daß zumindest ein Teil des Randes des Kontaktelements in die Hülse eingebettet, also eingeschmolzen oder eingequetscht, ist.The basic shape of the contact element is disc-like. Forms derived therefrom, such as contact elements similar to mushrooms, pencils or knives, are also particularly suitable. The element is fastened in the sleeve in that at least part of the edge of the contact element is embedded in the sleeve, that is to say melted or squeezed.

In einer besonders bevorzugten Ausführungsform ändert sich der Abstand des Randes des scheibenähnlichen Körpers von seinem Mittelpunkt, also sein Radius, über den Umfang. Er ändert sich insbesondere gesetzmäßig bzw. periodisch. Diese Eigenschaft ist besonders dann wichtig, wenn es praktisch kein metallisches Material für das Kontaktelement gibt, das dem thermischen Ausdehnungskoeffizienten des Kolbenmaterials (im allgemeinen Quarzglas) angepaßt wäre. Eine Fehlanpassung würde jedoch im Betrieb bald zu Sprüngen im Kolbenmaterial (Quarzglas) führen, die die Lebensdauer der Lampe verkürzen würden. Ein geeignetes Material für das Kontaktmaterial ist Edelstahl (V2A, insbesondere auch vernickelt) oder auch Nickel bzw. Kupfer (evtl. versilbert oder vergoldet).In a particularly preferred embodiment, the distance of the edge of the disk-like body from its center, ie its radius, changes over the circumference. It changes in particular legally or periodically. This property is particularly important when there is practically no metallic material for the contact element, which would be adapted to the thermal expansion coefficient of the piston material (generally quartz glass). A mismatch would soon lead to cracks in the bulb material (quartz glass) during operation, which would shorten the life of the lamp. A suitable material for the contact material is stainless steel (V2A, especially also nickel-plated) or nickel or copper (possibly silver-plated or gold-plated).

In einer besonders bevorzugten Ausführungsform ist der minimale Radius des Elements kleiner als der Innenradius der Hülse. Insbesondere hat das Kontaktelement eine kleeblattähnliche, elliptische, dreiecksähnliche oder einem n-Eck ähnliche Gestalt. Für die praktische Ausführung hat es sich als vorteilhaft erwiesen, wenn die Ecken des Kontaktelements abgerundet sind. Auf diese Weise können Spannungen minimiert werden, insbesondere bei gleichzeitiger Anwendung beider Techniken. Letztlich wird dadurch das Kontaktelement sehr zuverlässig in der Glashülse verankert.In a particularly preferred embodiment, the minimum radius of the element is smaller than the inner radius of the sleeve. In particular, the contact element has a shamrock-like, elliptical, triangular-like or n-corner shape. For practical implementation, it has proven to be advantageous if the corners of the contact element are rounded. In this way, tensions can be minimized, especially when both techniques are used simultaneously. Ultimately, the contact element is anchored very reliably in the glass sleeve.

Die äußere Stromzuführung, die die Quetschfolie mit dem Kontaktelement verbindet, kann prinzipiell auf zwei verschiedene Weisen realisiert werden.The external power supply that connects the squeeze film to the contact element can in principle be implemented in two different ways.

Eine erste Möglichkeit ist, daß die äußere Stromzuführung ein Draht ist. Vorteilhaft besitzt dabei das Kontaktelement ein ösenähnliches Ansatzstück (Halsteil), in das der Draht eingesetzt werden kann. Eine zweite Variante ist, die drahtförmige Stromzuführung abzuwinkeln und die Längsseite des Winkelstücks am Kontaktelement zu verschweißen. Schließlich kann das Kontaktelement auch direkt mit dem Draht stumpf verschweißt werden.A first possibility is that the external power supply is a wire. The contact element advantageously has an eyelet-like extension (neck part) into which the wire can be inserted. A second variant is to angle the wire-shaped power supply and to weld the long side of the angle piece to the contact element. Finally, the contact element can also be butt-welded directly to the wire.

Eine zweite Möglichkeit ist, daß die äußere Stromzuführung eine Folie, insbesondere eine Verlängerung der Quetschfolie, ist. Die übliche Quetschfolie ist stabil genug um die Aufgabe der äußere Stromzuführung mit zu übernehmen. Auch hier ist bevorzugt ein Verlängerungsteil der Quetschfolie abgewinkelt, wobei wieder die Längsseite des Winkelstücks am Kontaktelement verschweißt ist.A second possibility is that the external power supply is a film, in particular an extension of the squeeze film. The usual squeeze film is stable enough to take on the task of external power supply. Here, too, an extension part of the squeeze film is preferably angled, again the longitudinal side of the angle piece being welded to the contact element.

Im Falle der Abwinkelung eines Teils der äußeren Stromzuführung ist es vorteilhaft, daß das Kontaktelement zur Stromzuführung hin ausgebaucht ist. An dieser konkaven Wölbung kann das Winkelstück gut verschweißt werden.In the event that part of the external power supply is bent, it is advantageous for the contact element to be bulged toward the power supply. The elbow can be welded well to this concave curvature.

Für eine zuverlässige Halterung des Kontaktelements in der Glashülse hat es sich als günstig erwiesen, wenn zumindest der Rand des Kontaktelements eine Dicke zwischen 0,3 und 0,8 mm besitzt. In einer besonders bevorzugten Ausführungsform gilt diese Bemessungsregel für das ganze Kontaktelement.For reliable holding of the contact element in the glass sleeve, it has proven to be advantageous if at least the edge of the contact element has a thickness between 0.3 and 0.8 mm. In a particularly preferred embodiment, this dimensioning rule applies to the entire contact element.

Die Herstellung derartiger Sockel aus Glashülsen läßt sich vorteilhaft in den üblichen Herstellungsablauf für derartige Lampen einbinden wie er beispielsweise (mit Hilfe einer Vierbackenquetschmaschine) in der EP-A 451 647 beschrieben ist. Zur Herstellung des erfindungsgemäßen Sockels enthalten die Backen jetzt jeweils eine integrierte Formeinrichtung, die nicht nur die Quetschung, sondern auch die Glashülse formt. Dabei wird zunächst als Zwischenschritt das Ende des Lampenkolbens, insbesondere auch der Bereich der späteren Glashülse, auf Verformungstemperatur gebracht. Durch die Oberflächenspannung kommt es dadurch zu einer definierten Selbstverformung des Kolbenendes, so daß sich dort der Rohrdurchmesser einschnürt. Durch die der beabsichtigten Sockelform angepaßten Formbacken wird nun ein Verschluß des Kolbens durch die Quetschbacken erreicht. Gleichzeitig wird die Sockelgeometrie geprägt, wobei das Kontaktelement mittels Unterdruck oder durch eine Zange an die richtige Stelle gehalten wird. Ein definierter Innendurchmesser der Glashülse wird durch geeignet gewählte Verarbeitungsparameter erreicht.The production of such bases from glass sleeves can advantageously be integrated into the usual production process for lamps of the type described, for example (with the aid of a four-jaw squeezing machine) in EP-A 451 647 is described. To produce the base according to the invention, the jaws now each contain an integrated molding device which not only forms the pinch, but also the glass sleeve. As an intermediate step, the end of the lamp bulb, in particular also the area of the later glass sleeve, is brought to the deformation temperature. The surface tension results in a defined self-deformation of the piston end, so that the pipe diameter constricts there. Due to the shaped jaws adapted to the intended base shape, the piston is now closed by the pinch jaws. At the same time, the base geometry is embossed, the contact element being held in the right place by means of negative pressure or using pliers. A defined inner diameter of the glass sleeve is achieved by suitably chosen processing parameters.

Im folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Es zeigen:

Figur 1
eine Halogenglühlampe in Seitenansicht (a) und um 90° gedreht (b)
Figur 2
ein Kontaktelement für die Lampe der Figur 1
Figur 3
weitere Ausführungsbeispiele für Kontaktelemente
Figur 4
ein weiteres Ausführungsbeispiel (im Ausschnitt) einer Halogenglühlampe in Seitenansicht (a) und um 90° gedreht (b)
Figur 5
ein weiteres Ausführungsbeispiel für die Verbindung eines Kontaktelements mit der äußeren Stromzuführung
Figur 6
ein Ausführungsbeispiel einer Metallhalogenidlampe in Seitenansicht (a) und um 90° gedreht (b)
The invention will be explained in more detail below with the aid of several exemplary embodiments. Show it:
Figure 1
a halogen incandescent lamp in side view (a) and rotated by 90 ° (b)
Figure 2
a contact element for the lamp of Figure 1
Figure 3
further embodiments for contact elements
Figure 4
a further embodiment (in detail) of a halogen incandescent lamp in side view (a) and rotated by 90 ° (b)
Figure 5
a further embodiment for the connection of a contact element to the external power supply
Figure 6
an embodiment of a metal halide lamp in side view (a) and rotated by 90 ° (b)

Figur 1 zeigt zwei um 90° gedrehte Ansichten einer zweiseitig gequetschten Halogenglühlampe. Sie besteht aus einem zylindrischen Kolben 1, in dem ein Leuchtkörper 2 axial angeordnet ist. Er ist im Kolben 1 durch Noppen 10 gehaltert.FIG. 1 shows two views of a halogen incandescent lamp squeezed at 90 °. It consists of a cylindrical bulb 1, in which a luminous element 2 is arranged axially. It is held in the piston 1 by knobs 10.

Der Leuchtkörper 2 besteht aus leuchtenden Abschnitten 3 mit kleiner Steigung, die durch nichtleuchtende Abschnitte 4 mit großer Steigung voneinander getrennt sind. Auch die Enden 5 des Leuchtkörpers bestehen aus nichtleuchtenden Abschnitten großer Steigung. Die Enden 5 sind in ihrer Funktion als innere Stromzuführung direkt in die Quetschung 6 eingebettet und dort mit einer Quetschfolie 7 verbunden. Das dem Leuchtkörper zugewandte Ende 8 der Folie 7 ist innerhalb der Quetschung 6 umgeknickt, wobei das Leuchtkörperende 5 in den Knick 9 eingeführt ist und somit rein mechanisch einen elektrischen Kontakt mit der Folie 7 herstellt. Die Folie ist 2,5 µm dick.The luminous element 2 consists of luminous sections 3 with a small slope, which are separated by non-luminous sections 4 with a large slope are separated. The ends 5 of the filament also consist of non-illuminating sections with a large slope. The ends 5 are embedded directly in the squeeze 6 in their function as an internal power supply and are connected there with a squeeze film 7. The end 8 of the film 7 facing the filament is bent inside the pinch 6, the filament end 5 being inserted into the bend 9 and thus making an electrical contact with the film 7 purely mechanically. The film is 2.5 µm thick.

An die Quetschung 6 ist außen als Sockel eine rohrförmige Glashülse 11 angeformt mit einem Außendurchmesser von 7 mm und einem Innendurchmesser von 5 mm. Die Hülse 11 ist etwa 7 mm lang. Sie ist damit schmaler als die Breitseite der Quetschung 6, jedoch breiter als die Schmalseite der Quetschung 6. Dementsprechend befindet sich zwischen Quetschung 6 und Hülse 11 eine Übergangszone 12.A tubular glass sleeve 11 with an outer diameter of 7 mm and an inner diameter of 5 mm is molded onto the outside of the pinch 6 as a base. The sleeve 11 is about 7 mm long. It is therefore narrower than the broad side of the pinch 6, but wider than the narrow side of the pinch 6. Accordingly, there is a transition zone 12 between the pinch 6 and the sleeve 11.

In der Hülse 11 ist quer zur Lampenachse in einer Tiefe von 3 mm vom Hülsenende ein scheibenartiges Kontaktelement 13 eingebettet, das aus Stahlblech (V2A) mit einer Dicke von 0,4 mm (siehe Figur 2) gefertigt ist. Es ist kleeblattförmig gestaltet, wobei der maximale Radius der Scheibe 13 (Rmax) 2,7 mm und der minimale Radius (Rmin) 2,0 mm beträgt. Letzterer wird am Boden von jeweils vier Mulden 16 erreicht. Die Mulden 16 sind als konkave Kreisbögen aus der Scheibe ausgestanzt. Die Mulden 16 dienen insbesondere als Griffhilfe für eine Halterung mittels einer Zange.A disk-like contact element 13, which is made of sheet steel (V2A) with a thickness of 0.4 mm (see FIG. 2), is embedded in the sleeve 11 transversely to the lamp axis at a depth of 3 mm from the sleeve end. It has a cloverleaf shape, the maximum radius of the disc 13 (Rmax) being 2.7 mm and the minimum radius (Rmin) being 2.0 mm. The latter is reached on the floor by four troughs 16 each. The troughs 16 are punched out of the disk as concave arcs. The troughs 16 serve in particular as a grip aid for a holder by means of pliers.

An der Rückseite des Elements 13 ist ein hohles Halsteil 14 angesetzt. Zwischen Folie 7 und Element 13 ist ein Molybdändraht mit einem Durchmesser von 0,6 mm als äußere Stromzuführung 15 angeordnet, der mit dem Halsteil 14 verschweißt ist.A hollow neck part 14 is attached to the rear of the element 13. Between the film 7 and element 13, a molybdenum wire with a diameter of 0.6 mm is arranged as an external power supply 15, which is welded to the neck part 14.

In Fig. 3 sind noch weitere mögliche Grundformen für das Kontaktelement gezeigt. Im einzelnen handelt es sich dabei um eine elliptische Gestalt 17 (Fig. 3a), eine dreiecksähnliche Gestalt 18 (Fig. 3b) und eine viereckähnliche Gestalt 19 (Fig. 3c). Die Grundform der letzteren ist eine 0,5 mm dicke Scheibe, die eine konkave zentrale Ausbuchtung 27 mit einem Durchmesser von 3 mm besitzt. Der größte Durchmesser der Scheibe ist 5,4 mm, sein kleinster Durchmesser ist 5 mm. Die Ecken des Dreiecks und Vierecks sind verrundet.3 shows further possible basic shapes for the contact element. Specifically, this is an elliptical shape 17 (FIG. 3a), a triangle-like shape 18 (FIG. 3b) and a square-like shape 19 (FIG. 3c). The basic shape of the latter is a 0.5 mm thick disc which has a concave central bulge 27 with a diameter of 3 mm. The largest diameter of the disc is 5.4 mm, its smallest diameter is 5 mm. The corners of the triangle and quadrangle are rounded.

Ein weiteres Ausführungsbeispiel einer Halogenglühlampe zeigt Fig. 4 im Ausschnitt. Auch hier ist das Kontaktelement 20 tellerförmig ausgebaucht, während die drahtförmige äußere Stromzuführung 21 innerhalb der Hülse 11 abgewinkelt (22) ist. Der abgewinkelte Teil 22 ist mit seiner Längsseite mit der Rückseite des Kontaktelements 20 mittels Widerstandsschweißen verbunden.4 shows a further exemplary embodiment of a halogen incandescent lamp in detail. Here too, the contact element 20 is bulged in a plate shape, while the wire-shaped outer power supply 21 is angled within the sleeve 11 (22). The long side of the angled part 22 is connected to the rear of the contact element 20 by means of resistance welding.

Statt einer Abwinkelung kann eine drahtförmige äußere Stromzuführung 25 auch direkt mit dem Kontaktelement 26 im Bereich der Ausbauchung 27 stumpf verschweißt (28) sein (Fig. 5).Instead of an angling, a wire-shaped external power supply 25 can also be butt-welded directly to the contact element 26 in the region of the bulge 27 (FIG. 5).

Ein Ausführungsbeispiel einer Metallhalogenidlampe zeigt Fig. 6. Im Unterschied zu Fig. 1 schließt der als Tonnenkörper 30 ausgebildete Kolben aus Quarzglas zwei Elektroden 31 nebst einer Metallhalogenidfüllung ein. Die Kolbenenden sind durch Quetschungen 32 abgedichtet, in die Folien 33 eingebettet sind. Die äußere Stromzuführung wird hier durch ein Verlängerungsteil 34 der Quetschfolie 33 gebildet. Das Verlängerungsteil 34 ist im Bereich der Glashülse 11 abgewinkelt. Der abgewinkelte Teil 35 ist mit seiner Längsseite 36 mit der Rückseite des bauchigen Kontaktelements 26 verschweißt.An exemplary embodiment of a metal halide lamp is shown in FIG. 6. In contrast to FIG. 1, the bulb made of quartz glass in the form of a barrel body 30 includes two electrodes 31 in addition to a metal halide filling. The piston ends are sealed by crushing 32, in which foils 33 are embedded. The external power supply is formed here by an extension part 34 of the squeeze film 33. The extension part 34 is angled in the area of the glass sleeve 11. The angled part 35 is welded with its long side 36 to the rear of the bulbous contact element 26.

Claims (10)

Zweiseitig gequetschte elektrische Lampe mit einem vakuumdicht abgeschlossenen, längsgestreckten Lampenkolben (1; 30), der eine Längsachse definiert und aneinander gegenüberliegenden Enden mit Quetschdichtungen (6; 32) ausgestattet ist, wobei jede Quetschdichtung eine Quetschfolie (7; 33) umschließt, die innere (5) und äußere Stromzuführungen (15; 21; 25; 34) miteinander verbindet, und mit jeweils einem Lampensockel am Ende der Quetschdichtung (6; 32), wobei der Sockel ein Kontaktelement (13; 17; 18; 19; 20) aufweist, das mit der äußeren Stromzuführung (15; 21; 25; 34) elektrisch leitend verbunden ist, dadurch gekennzeichnet, daß der Sockel aus einer Hülse (11) besteht, die aus dem Material des Lampenkolbens gebildet ist und die an das äußere Ende der Quetschdichtung (6; 32) angeformt ist, wobei sich das Kontaktelement (13) im wesentlichen quer zur Lampenachse erstreckt und im Innern der Hülse (11) befestigt ist.Electric lamp pinched on both sides with a vacuum-sealed, elongated lamp bulb (1; 30) that defines a longitudinal axis and is equipped with pinch seals (6; 32) at opposite ends, each pinch seal enclosing a pinch film (7; 33), the inner ( 5) and external power supply lines (15; 21; 25; 34) are connected to each other, and each with a lamp base at the end of the pinch seal (6; 32), the base having a contact element (13; 17; 18; 19; 20), which is electrically conductively connected to the external power supply (15; 21; 25; 34), characterized in that the base consists of a sleeve (11) which is formed from the material of the lamp bulb and which is attached to the outer end of the pinch seal ( 6; 32) is integrally formed, the contact element (13) extending essentially transversely to the lamp axis and being fastened in the interior of the sleeve (11). Zweiseitig gequetschte elektrische Lampe nach Anspruch 1, dadurch gekennzeichnet, daß das Kontaktelement (13) scheibenähnlich geformt ist.Electric lamp pinched on both sides according to claim 1, characterized in that the contact element (13) is shaped like a disk. Zweiseitig gequetschte elektrische Lampe nach Anspruch 2, dadurch gekennzeichnet, daß zumindest ein Teil des Rands des Kontaktelements in die Hülse (11) eingeschmolzen ist.Electric lamp pinched on two sides according to claim 2, characterized in that at least part of the edge of the contact element is melted into the sleeve (11). Zweiseitig gequetschte elektrische Lampe nach Anspruch 1, dadurch gekennzeichnet, daß sich beim Kontaktelement (13) der Abstand des Randes vom Mittelpunkt (Radius) über den Umfang ändert, insbesondere sich gesetzmäßig ändert.Electric lamp pinched on two sides according to claim 1, characterized in that the distance of the edge from the center point (radius) changes over the circumference in the contact element (13), in particular changes according to law. Zweiseitig gequetschte elektrische Lampe nach Anspruch 4, dadurch gekennzeichnet, daß der minimale Radius des Elements kleiner als der Innenradius der Hülse (11) ist.Electric lamp pinched on two sides according to claim 4, characterized in that the minimum radius of the element is smaller than the inner radius of the sleeve (11). Zweiseitig gequetschte elektrische Lampe nach Anspruch 4, dadurch gekennzeichnet, daß das Element kleeblattähnlich (13), elliptisch (17), dreiecksähnlich (18) oder ähnlich einem n-Eck (19) mit n>3 geformt ist.Electric lamp pinched on two sides according to claim 4, characterized in that the element is shaped like a shamrock (13), elliptical (17), triangular (18) or similar to an n-corner (19) with n> 3. Zweiseitig gequetschte elektrische Lampe nach Anspruch 1, dadurch gekennzeichnet, daß die äußere Stromzuführung (15) ein Draht ist.Electric lamp pinched on two sides according to claim 1, characterized in that the external power supply (15) is a wire. Zweiseitig gequetschte elektrische Lampe nach Anspruch 1, dadurch gekennzeichnet, daß die äußere Stromzuführung eine Folie (34), insbesondere eine Verlängerung der Quetschfolie, ist.Electric lamp pinched on two sides according to claim 1, characterized in that the external power supply is a film (34), in particular an extension of the squeeze film. Zweiseitig gequetschte elektrische Lampe nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß das Kontaktelement eine Ausbauchung (27) besitzt, an dem die äußere Stromzuführung befestigt ist.Electric lamp pinched on two sides according to claim 7 or 8, characterized in that the contact element has a bulge (27) to which the external power supply is attached. Zweiseitig gequetschte elektrische Lampe nach Anspruch 1, dadurch gekennzeichnet, daß die Lampe eine Glühlampe oder Entladungslampe ist.Electric lamp pinched on two sides according to claim 1, characterized in that the lamp is an incandescent lamp or discharge lamp.
EP96118985A 1995-12-22 1996-11-27 Double side-pinched lamp Expired - Lifetime EP0780883B1 (en)

Applications Claiming Priority (2)

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DE19548523A DE19548523A1 (en) 1995-12-22 1995-12-22 Lamp pinched on both sides
DE19548523 1995-12-22

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EP0780883A1 true EP0780883A1 (en) 1997-06-25
EP0780883B1 EP0780883B1 (en) 1999-05-19

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US (1) US5932955A (en)
EP (1) EP0780883B1 (en)
JP (1) JP4138901B2 (en)
CN (1) CN1088254C (en)
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HU (1) HU217146B (en)

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EP1492145A3 (en) * 2003-06-05 2007-12-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Double side closed lamp
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Also Published As

Publication number Publication date
HU217146B (en) 1999-11-29
EP0780883B1 (en) 1999-05-19
JP4138901B2 (en) 2008-08-27
CN1159652A (en) 1997-09-17
DE59601941D1 (en) 1999-06-24
JPH09190804A (en) 1997-07-22
HU9603507D0 (en) 1997-02-28
CN1088254C (en) 2002-07-24
HUP9603507A3 (en) 1997-10-28
DE19548523A1 (en) 1997-06-26
HUP9603507A2 (en) 1997-08-28
US5932955A (en) 1999-08-03

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