EP0168031B1 - Electrical lamp - Google Patents

Electrical lamp Download PDF

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Publication number
EP0168031B1
EP0168031B1 EP85108517A EP85108517A EP0168031B1 EP 0168031 B1 EP0168031 B1 EP 0168031B1 EP 85108517 A EP85108517 A EP 85108517A EP 85108517 A EP85108517 A EP 85108517A EP 0168031 B1 EP0168031 B1 EP 0168031B1
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EP
European Patent Office
Prior art keywords
lamp
current leads
vessel
internal current
metal
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
EP85108517A
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German (de)
French (fr)
Other versions
EP0168031A2 (en
EP0168031A3 (en
Inventor
Jürgen Dr. Dipl.-Phys. Heider
Achim Gosslar
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0168031A2 publication Critical patent/EP0168031A2/en
Publication of EP0168031A3 publication Critical patent/EP0168031A3/en
Application granted granted Critical
Publication of EP0168031B1 publication Critical patent/EP0168031B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/40—Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors
    • H01J61/368—Pinched seals or analogous seals

Definitions

  • the invention relates to an electric lamp with a glass or quartz vessel squeezed on one side, wherein at least two sealing foils are embedded in the pinch, the outward ends of which lead to the socket contacts and external power leads leading to the inside with the inside of the vessel leading internal power supplies are connected.
  • a problem with such lamps is the alignment of the lamp parts attached to the inner power supply lines during the squeezing process. Since the sealing foils are usually thinner than 50 pm and thus have no stiffness, alignment of the outer power supply lines is only very incomplete with the inner power supply lines and thus transfer the lamp parts attached to it. Therefore, constructions connected to the lamp parts and supported against the inner wall of the envelope bulb are usually used. However, these constructions require considerably more work and costs and are not desirable because of the shading involved.
  • the aim of the invention is to achieve a precise alignment of the lamp parts attached to the inner power supply lines during the squeezing process by means of a simple and inexpensive device and at the same time to ensure a vacuum-tight squeeze in the area of the sealing film.
  • the electric lamp with the features mentioned in the preamble of the main claim is characterized in that short pieces of refractory metal, such as e.g. Tantalum, molybdenum or tungsten are attached, which run transverse to the inner power supply lines and lie in the plane determined by the pinch.
  • refractory metal such as e.g. Tantalum, molybdenum or tungsten
  • the metal pieces are attached to the inner power supply lines using a gauge before the crimping process. They prevent the inner power supply lines from being twisted or tilted due to the squeezing process, and thus enable precise alignment of the lamp parts attached to these inner power supply lines.
  • the metal pieces advantageously consist of wire or sheet metal of the same metal composition as the inner power supply lines and are welded to the latter. In the case of sheet metal, both circular or oval and rectangular shapes are conceivable.
  • the same material composition of the power supply and metal piece prevents stresses and cracks due to different expansion coefficients.
  • the metal pieces advantageously run at right angles to the inner power supply lines in order to ensure optimal alignment of the lamp parts held by the power supply lines.
  • the electric lamp can be a high-pressure discharge lamp, the squeezed vessel forming the outer bulb and the inner power supply lines being the electrical connections for a discharge vessel located in the outer bulb.
  • Exact alignment of the discharge vessel in the outer bulb is of great importance in this type of lamp, since these lamps are preferably used in lamps with reflectors. In order to obtain uniform illumination, it is necessary for the center of the lamp to be located in a precisely defined location in the lamp.
  • the squeezed vessel in the electric lamp can also form the discharge vessel directly, the internal current leads being the electrical connections for electrodes located in the discharge vessel.
  • the electric lamp according to the invention can also be a halogen incandescent lamp, the squeezed vessel forming the lamp bulb, and the internal power supply lines forming the electrical connections for an incandescent filament located in the lamp bulb.
  • the metal pieces welded to the inner power supply lead prevent twisting or tensioning of the filament and thus prevent premature failure of the filament.
  • the metal halide high-pressure discharge lamp 1 shown in FIG. 1 has a Discharge vessel 2, made of quartz glass, which is surrounded at a short distance by an outer bulb 3 - also made of quartz glass.
  • the tungsten electrodes 4, 5 are connected to the inner power supply wires 9, 10 of the outer bulb 3 via sealing foils 6, 7 made of molybdenum, which are embedded in the pinch 8 of the discharge vessel 2.
  • These wires 9, 10 consist of molybdenum and have a thickness of 0.5 mm.
  • a getter 11 made of a zirconium compound is also attached to a metal carrier 12 in a potential-free manner by means of a wire 13.
  • the inner power supply lines 9, 10 are further connected to the outer power supply lines 17, 18 - also made of molybdenum - via sealing foils 15, 16 made of molybdenum inserted into the pinch 14 of the outer bulb 3.
  • the metal halide discharge lamp 1 has a filling of NaJ, SnJ 2 , TIJ, Hg and Ar (burner volume 0.27 cm 3 ) and generates a luminous efficacy of approx. 65 Im / W with a power consumption of 70 W.
  • the tungsten filament 22 is pinched with the molybdenum foils 25, 26 by means of the inner power supply lines 23, 24 - likewise made of tungsten - which also represent the holders for the filament 22 27 of the lamp bulb 28 made of quartz glass.
  • the molybdenum foils 25, 26 are in turn connected to the electrical connection contacts of the lamp — not shown here — via external current leads 29, 30.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Description

Die Erfindung betrifft eine elektrische Lampe mit einem einseitig gequetschten Gefäß aus Glas oder Quarz, wobei in der Quetschung mindestens zwei Dichtungsfolien eingebettet sind, deren nach außen gerichtete Enden mit zu den Sockelkontakten führenden äußeren Stromzuführungen und deren nach innen gerichtete Enden mit in das Innere des Gefäßes führenden inneren Stromzuführungen verbunden sind.The invention relates to an electric lamp with a glass or quartz vessel squeezed on one side, wherein at least two sealing foils are embedded in the pinch, the outward ends of which lead to the socket contacts and external power leads leading to the inside with the inside of the vessel leading internal power supplies are connected.

Ein Problem bei derartigen Lampen stellt die Ausrichtung der an den inneren Stromzuführungen befestigten Lampenteile beim Quetschvorgang dar. Da die Dichtungsfolien meist dünner als 50 pm sind und somit keinerlei Steifheit aufweisen, wird eine Ausrichtung der äußeren Stromzuführungen nur sehr unvollständig auf die inneren Stromzuführungen und damit auf die daran befestigten Lampenteile übertragen. Daher werden üblicherweise mit den Lampenteilen verbundene, sich gegen die Innenwandung des Hüllkolbens abstützende Konstruktionen verwendet. Diese Konstruktionen erfordern jedoch einen wesentlich höheren Arbeits-und Kostenaufwand und sind wegen der damit verbundenen Abschattung nicht erwünscht.A problem with such lamps is the alignment of the lamp parts attached to the inner power supply lines during the squeezing process. Since the sealing foils are usually thinner than 50 pm and thus have no stiffness, alignment of the outer power supply lines is only very incomplete with the inner power supply lines and thus transfer the lamp parts attached to it. Therefore, constructions connected to the lamp parts and supported against the inner wall of the envelope bulb are usually used. However, these constructions require considerably more work and costs and are not desirable because of the shading involved.

Aus der DE-A-30 08 967 ist eine Baueinheit aus Elektrode und Zuleitung mit Dichtungsfolie für eine elektrische Entladungslampe bekannt. Durch Falten der Dichtungsfolienkanten in entgegengesetzte Richtungen (Z-förmiger Querschnitt) soll eine größere Steifheit der Folien erlangt und eine bessere Ausrichtung der Elektrode ermöglicht werden. Für eine hermetische Dichtung wird die Baueinheit in den Glashals des Entladungsgefäßes eingeführt und der Hals durch Erhitzen im Bereich der Dichtungsfolie zum Zusammenfallen gebracht. Diese Baueinheit erlaubt zwar aufgrund der Versteifung der Dichtungsfolie eine etwas verbesserte Zentrierung, ist jedoch als Lösung bei dem hier beschriebenen Quetschvorgang nicht anwendbar.From DE-A-30 08 967 a structural unit consisting of an electrode and a lead with a sealing film for an electric discharge lamp is known. By folding the edges of the sealing foil in opposite directions (Z-shaped cross-section), the foils should be more rigid and the electrode should be better aligned. For a hermetic seal, the assembly is inserted into the glass neck of the discharge vessel and the neck collapses by heating in the area of the sealing film. Although this structural unit allows a somewhat improved centering due to the stiffening of the sealing film, it cannot be used as a solution in the squeezing process described here.

Ziel der Erfindung ist es, durch eine einfache und kostengünstige Vorrichtung eine genaue Ausrichtung der an den inneren Stromzuführungen befestigten Lampenteile beim Quetschvorgang zu erreichen und gleichzeitig eine vakuumdichte Quetschung im Bereich der Dichtungsfolie zu gewährleisten.The aim of the invention is to achieve a precise alignment of the lamp parts attached to the inner power supply lines during the squeezing process by means of a simple and inexpensive device and at the same time to ensure a vacuum-tight squeeze in the area of the sealing film.

Die elektrische Lampe mit den im Oberbegriff des Hauptanspruchs genannten Merkmalen ist erfindungsgemäß dadurch gekennzeichnet, daß an den inneren Stromzuführungen im Bereich der Quetschung kurze Stücke aus hochschmelzendem Metall, wie z.B. Tantal, Molybdän oder Wolfram befestigt sind, die quer zu den inneren Stromzuführungen verlaufen und in der durch die Quetschung bestimmten Ebene liegen.The electric lamp with the features mentioned in the preamble of the main claim is characterized in that short pieces of refractory metal, such as e.g. Tantalum, molybdenum or tungsten are attached, which run transverse to the inner power supply lines and lie in the plane determined by the pinch.

Die Metallstücke werden vor dem Quetschvorgang an den inneren Stromzuführungen mit Hilfe einer Lehre befestigt. Sie verhindern ein Verdrehen oder Schrägstellen der inneren Stromzuführungen durch den Quetschvorgang und ermöglichen so eine genaue Ausrichtung der an diesen inneren Stromzuführungen befestigten Lampenteile.The metal pieces are attached to the inner power supply lines using a gauge before the crimping process. They prevent the inner power supply lines from being twisted or tilted due to the squeezing process, and thus enable precise alignment of the lamp parts attached to these inner power supply lines.

Vorteilhaft bestehen die Metallstücke aus Draht oder Blech derselben Metallzusammensetzung wie die inneren Stromzuführungen und sind mit letzteren verschweißt. Im Fall von Blech sind dabei sowohl kreisförmige oder ovale als auch rechteckige Formen denkbar. Durch dieselbe Materialzusammensetzung von Stromzuführung und Metallstück werden Spannungen und Risse aufgrund von unterschiedlichen Ausdehnungskoeffizienten vermieden. Die Metallstücke verlaufen vorteilhaft im rechten Winkel zu den inneren Stromzuführungen, um so eine optimale Ausrichtung der von den Stromzuführungen gehaltenen Lampenteile zu gewährleisten.The metal pieces advantageously consist of wire or sheet metal of the same metal composition as the inner power supply lines and are welded to the latter. In the case of sheet metal, both circular or oval and rectangular shapes are conceivable. The same material composition of the power supply and metal piece prevents stresses and cracks due to different expansion coefficients. The metal pieces advantageously run at right angles to the inner power supply lines in order to ensure optimal alignment of the lamp parts held by the power supply lines.

Bei der elektrischen Lampe kann es sich um eine Hochdruckentladungslampe handeln, wobei das gequetschte Gefäß den Außenkolben bildet und die inneren Stromzuführungen die elektrischen Verbindungen für ein im Außenkolben befindliches Entladungsgefäß sind. Eine exakte Ausrichtung des Entladungsgefäßes im Außenkolben ist bei diesem Lampentyp von großer Bedeutung, da diese Lampen bevorzugt in Leuchten mit Reflektoren Verwendung finden. Um dabei eine gleichmäßige Ausleuchtung zu erhalten, ist es erforderlich, daß der Leuchtmittelpunkt an einem genau festgelegten Ort in der Leuchte zu liegen kommt.The electric lamp can be a high-pressure discharge lamp, the squeezed vessel forming the outer bulb and the inner power supply lines being the electrical connections for a discharge vessel located in the outer bulb. Exact alignment of the discharge vessel in the outer bulb is of great importance in this type of lamp, since these lamps are preferably used in lamps with reflectors. In order to obtain uniform illumination, it is necessary for the center of the lamp to be located in a precisely defined location in the lamp.

Für den Fall, daß die Entladungslampe keine aggressiven oder schwer verdampfbaren Füllungssubstanzen enthält, kann das gequetschte Gefäß bei der elektrischen Lampe auch direkt das Entladungsgefäß bilden, wobei die inneren Stromzuführungen die elektrischen Verbindungen für im Entladungsgefäß befindliche Elektroden sind.In the event that the discharge lamp does not contain any aggressive or hard-to-evaporate filling substances, the squeezed vessel in the electric lamp can also form the discharge vessel directly, the internal current leads being the electrical connections for electrodes located in the discharge vessel.

Die erfindungsgemäße elektrische Lampe kann andererseits auch eine Halogenglühlampe sein, wobei das gequetschte Gefäß den Lampenkolben bildet, und die inneren Stromzuführungen die elektrischen Verbindungen für eine im Lampenkolben befindliche Glühwendel bilden. Durch die an den inneren Stromzuführungen angeschweißten Metallstücke wird ein Verdrehen oder Verspannen der Glühwendel vermieden und so ein vorzeitiger Ausfall des Glühkörpers verhindert.On the other hand, the electric lamp according to the invention can also be a halogen incandescent lamp, the squeezed vessel forming the lamp bulb, and the internal power supply lines forming the electrical connections for an incandescent filament located in the lamp bulb. The metal pieces welded to the inner power supply lead prevent twisting or tensioning of the filament and thus prevent premature failure of the filament.

Beim Einquetschen des Brenners oder der Wendel wird außerdem dauernd Inertgas durch eine Öffnung an dem der Quetschung entgegengesetzten Ende des Kolbens in letzteren geblasen, um eine Folienoxidation zu verhindern. Mit Hilfe der Metallstücke wird eine Schrägstellung des Entladungsgefäßes bzw. der Wendel, die durch die Strömung verursacht werden kann, unmöglich gemacht.When the burner or the helix is squeezed, inert gas is also continuously blown through an opening at the end of the piston opposite the pinch in the latter, in order to prevent film oxidation. With the help of the metal pieces, an inclination of the discharge vessel or the filament, which can be caused by the flow, is made impossible.

Die Erfindung ist anhand der nachfolgenden

  • Figuren näher veranschaulicht.
  • Figur 1 zeigt eine erfindungsgemäße Hochdruckentladungslampe mit einem Außenkolben.
  • Figur 2 zeigt eine erfindungsgemäße Halogenglühlampe.
The invention is based on the following
  • Figures illustrated in more detail.
  • Figure 1 shows a high-pressure discharge lamp according to the invention with an outer bulb.
  • Figure 2 shows a halogen incandescent lamp according to the invention.

Die in Figur 1 dargestellte Metallhalogenid-Hochdruckentladungslampe 1 besitzt ein Entladungsgefäß 2, aus Quarzglas, das in geringem Abstand von einem Außenkolben 3 - ebenfalls aus Quarzglas - umgeben ist. Die Wolfram-Elektroden 4, 5 sind über Dichtungsfolien 6, 7 aus Molybdän, die in die Quetschung 8 des Entladungsgefäßes 2 eingebettet sind, mit den inneren Stromzuführungsdrähten 9, 10 des Außenkolbens 3 verbunden. Diese Drähte 9, 10 bestehen aus Molybdän und haben eine Dicke von 0,5 mm. In der Quetschung 8 des Entladungsgefäßes 2 ist außerdem ein Getter 11 aus einer Zirkoniumverbindung auf einem Metallträger 12 mittels eines Drahtes 13 potentialfrei befestigt. Die inneren Stromzuführungen 9, 10 sind weiter über in die Quetschung 14 des Außenkolbens 3 eingelegte Dichtungsfolien 15, 16 aus Molybdän mit den äußeren Stromzuführungen 17, 18 - ebenfalls aus Molybdän - verbunden.The metal halide high-pressure discharge lamp 1 shown in FIG. 1 has a Discharge vessel 2, made of quartz glass, which is surrounded at a short distance by an outer bulb 3 - also made of quartz glass. The tungsten electrodes 4, 5 are connected to the inner power supply wires 9, 10 of the outer bulb 3 via sealing foils 6, 7 made of molybdenum, which are embedded in the pinch 8 of the discharge vessel 2. These wires 9, 10 consist of molybdenum and have a thickness of 0.5 mm. In the pinch 8 of the discharge vessel 2, a getter 11 made of a zirconium compound is also attached to a metal carrier 12 in a potential-free manner by means of a wire 13. The inner power supply lines 9, 10 are further connected to the outer power supply lines 17, 18 - also made of molybdenum - via sealing foils 15, 16 made of molybdenum inserted into the pinch 14 of the outer bulb 3.

An den inneren Stromzuführungsdrähten 9, 10 ist innerhalb der Quetschung 14 des Außenkolbens 3 - im rechten Winkel zu den Stromzuführungsdrähten 9, 10 - jeweils ein kurzes Molybdän-Drahtstück 19, 20 von ca. 5 mm Länge befestigt, dessen Dicke mit der der inneren Stromzuführungsdrähte 9, 10 übereinstimmt. Durch diese Drahtstücke 19, 20, die vor dem Quetschvorgang des Außenkolbens 3 mit Hilfe einer Lehre an den Stromzuführungen 9, 10 angeschweißt werden, wird bei der Quetschung des Außenkolbens 3 eine optimale Ausrichtung des Entladungsgefäßes 2 im Zentrum des Außenkolbens 3 erreicht.A short piece of molybdenum wire 19, 20 of approximately 5 mm in length, the thickness of which is equal to that of the inner power supply wires, is fastened to the inner power supply wires 9, 10 within the pinch 14 of the outer bulb 3 - at right angles to the power supply wires 9, 10 9, 10 matches. Through these pieces of wire 19, 20, which are welded to the power supply lines 9, 10 with the aid of a gauge before the pinching process of the outer bulb 3, an optimal alignment of the discharge vessel 2 in the center of the outer bulb 3 is achieved in the pinching of the outer bulb 3.

Die Metallhalogenid-Entladungslampe 1 besitzt eine Füllung aus NaJ, SnJ2, TIJ, Hg und Ar (Brennervolumen 0,27 cm3) und erzeugt bei einer Leistungsaufnahme von 70 W eine Lichtausbeute von ca. 65 Im/W.The metal halide discharge lamp 1 has a filling of NaJ, SnJ 2 , TIJ, Hg and Ar (burner volume 0.27 cm 3 ) and generates a luminous efficacy of approx. 65 Im / W with a power consumption of 70 W.

Bei der in Figur 2 dargestellten Halogenglühlampe 21 mit 400 W Aufnahmeleistung ist die Wolfram-Glühwendel 22 mittels der inneren Stromzuführungen 23, 24 - ebenfalls aus Wolfram -, die gleichzeitig die Halterungen für die Wendel 22 darstellen, mit den Molybdänfolien 25, 26 in der Quetschung 27 des Lampenkolbens 28 aus Quarzglas verbunden. Die Molybdänfolien 25, 26 sind wiederum über äußere Stromzuführungen 29, 30 mit den elektrischen Anschlußkontakten der Lampe - hier nicht dargestellt - verbunden. Durch senkrecht zu den inneren Stromzuführungen 23, 24 innerhalb der Quetschung 27 - angeschweißte kurze Drahtstücke 31, 32 aus Molybdän von 3 mm Länge wird bei der Quetschung eine exakte Ausrichtung der inneren Stromzuführungen 23, 24 erreicht und so eine Verdrehung oder Verspannung der Glühwendel 22 verhindert.In the halogen incandescent lamp 21 shown in FIG. 2 with a power input of 400 W, the tungsten filament 22 is pinched with the molybdenum foils 25, 26 by means of the inner power supply lines 23, 24 - likewise made of tungsten - which also represent the holders for the filament 22 27 of the lamp bulb 28 made of quartz glass. The molybdenum foils 25, 26 are in turn connected to the electrical connection contacts of the lamp — not shown here — via external current leads 29, 30. By perpendicular to the inner power supply lines 23, 24 within the pinch 27 - welded short pieces of wire 31, 32 made of molybdenum of 3 mm length, an exact alignment of the inner power lines 23, 24 is achieved during the pinching and thus prevents the filament 22 from being twisted or twisted .

Claims (7)

1. An electric lamp (1, 21) comprising a vessel (3,28) which is made of glass or quartz crystal and which is pinched at one end, where at least two sealing foils (15, 16; 25, 26) are embedded in the pinch (14, 27), the outwardly directed ends of which are connected to external current leads (17, 18; 29, 30) which lead to the base contacts, and the inwardly directed ends of which are connected to internal current leads (9, 10; 23, 24) which lead into the interior of the vessel (3, 28), characterised in that to the internal current leads (9,10; 23,24) in the region ofthe pinch (14,27) are attached short pieces (19, 20; 31, 32) of metal having a high melting point, which extend transversely to the internal current leads (9, 10; 23, 24) and are arranged in the plane defined by the pinch (14, 27).
2. A lamp as claimed in Claim 1, characterised in that the metal pieces (19, 20; 31, 32) consist of wire.
3. A lamp as claimed in Claim 1, characterised in that the metal pieces consist of sheet metal components.
4. A lamp as claimed in one or several of the Claims 1 to 3, characterised in that the metal pieces consist of the same metal as the internal current leads (9, 10).
5. A lamp as claimed in one or several of the Claims 1 to 4, characterised in that the metal pieces (19, 20; 31, 32) are welded to the internal current leads (9, 10; 23, 24).
6. A lamp as claimed in Claim 1, characterised in that the electric lamp (1) is a high-pressure discharge lamp, where the pinched vessel (3) forms the outer bulb and the internal current leads (9, 10) form the electrical connections for a discharge vessel (2) arranged in the outer bulb.
7. A lamp as claimed in Claim 1, characterised in that the electric lamp (21) is a halogen lamp, where the pinched vessel (28) forms the lamp bulb and the internal current leads (23, 24) form the electrical connections for an incandescent coil (22) arranged in the lamp bulb.
EP85108517A 1984-07-13 1985-07-09 Electrical lamp Expired - Lifetime EP0168031B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843425894 DE3425894A1 (en) 1984-07-13 1984-07-13 ELECTRIC LAMP
DE3425894 1984-07-13

Publications (3)

Publication Number Publication Date
EP0168031A2 EP0168031A2 (en) 1986-01-15
EP0168031A3 EP0168031A3 (en) 1987-12-23
EP0168031B1 true EP0168031B1 (en) 1990-04-11

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Family Applications (1)

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EP85108517A Expired - Lifetime EP0168031B1 (en) 1984-07-13 1985-07-09 Electrical lamp

Country Status (4)

Country Link
US (1) US4658177A (en)
EP (1) EP0168031B1 (en)
JP (1) JPS6134849A (en)
DE (2) DE3425894A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600991A1 (en) * 1986-01-15 1987-07-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP AND METHOD FOR THEIR PRODUCTION
DE8601283U1 (en) * 1986-01-20 1986-08-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Motor vehicle discharge lamp
US4743803A (en) * 1987-05-15 1988-05-10 General Electric Company General service tungsten-halogen incandescent lamp having improved filament shock resistance
JPH0762993B2 (en) * 1987-09-21 1995-07-05 東芝ライテック株式会社 Metal halide lamp
US4876483A (en) * 1988-05-26 1989-10-24 Gte Products Corporation Arc lamp with surface arc resistant barrier
US5037342A (en) * 1988-11-15 1991-08-06 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Method of making an electric lamp, and more particularly a lamp vessel in which electrodes are retained in the lamp by a pinch or press seal
DE4013039A1 (en) * 1990-04-24 1991-10-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP
DE4233469A1 (en) * 1992-10-05 1994-04-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method for producing a high-pressure discharge lamp of small wattage, which is pinched on one side, and high-pressure discharge lamps
DE102007015481A1 (en) * 2007-03-30 2008-10-02 Osram Gesellschaft mit beschränkter Haftung Construction unit for electric lamp i.e. reflector lamp, has molybdenum foils brought into pinch and guided outwardly by external current supply, where one of foils is arranged transverse to longitudinal axle in pinch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE535143A (en) * 1954-01-27
US2876377A (en) * 1955-09-01 1959-03-03 Westinghouse Electric Corp Ribbon seal and method of fabrication
NL6806902A (en) * 1968-05-16 1969-11-18
US4254356A (en) * 1979-04-23 1981-03-03 General Electric Company Inlead and method of making a discharge lamp
CA1176687A (en) * 1981-06-06 1984-10-23 Robert Hall Bi pin base for single ended discharge lamp
US4535269A (en) * 1983-08-01 1985-08-13 General Electric Company Incandescent lamp

Also Published As

Publication number Publication date
JPH0445933B2 (en) 1992-07-28
DE3577160D1 (en) 1990-05-17
EP0168031A2 (en) 1986-01-15
DE3425894A1 (en) 1986-01-23
JPS6134849A (en) 1986-02-19
US4658177A (en) 1987-04-14
EP0168031A3 (en) 1987-12-23

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