EP0476461B1 - Single based high pressure discharge lamp - Google Patents

Single based high pressure discharge lamp Download PDF

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Publication number
EP0476461B1
EP0476461B1 EP91115114A EP91115114A EP0476461B1 EP 0476461 B1 EP0476461 B1 EP 0476461B1 EP 91115114 A EP91115114 A EP 91115114A EP 91115114 A EP91115114 A EP 91115114A EP 0476461 B1 EP0476461 B1 EP 0476461B1
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EP
European Patent Office
Prior art keywords
frame bracket
cap
pressure discharge
discharge lamp
bracket section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91115114A
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German (de)
French (fr)
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EP0476461A1 (en
Inventor
Wolfgang Greiler
Andreas Dr. Genz
Bernd Lewandowski
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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Publication of EP0476461A1 publication Critical patent/EP0476461A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • 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

Definitions

  • the invention relates to a high-pressure discharge lamp with a base on one side, according to the preamble of protective claim 1.
  • Such single-ended high-pressure discharge lamps are metal halide discharge lamps with powers of approx. 500-2,500 watts and relatively high color temperatures, as are desired with light sources for film and television recordings.
  • These lamps require a frame that ensures a stable mounting of the discharge vessel in the outer bulb, so that a change in the axial position of the discharge vessel, e.g. caused by vibrations, is prevented.
  • the problem of the different thermal expansion of the different lamp parts must be taken into account.
  • High-pressure discharge lamps with a base on one side and a power consumption of approx. 500 - 2500 watts are available. These have a frame bracket with a crossbar running perpendicular to the lamp axis, which is welded to the power supply remote from the base, whereby the power supply remote from the base extends and extends beyond this welding point is fixed in the pump stem or a bulge of the outer bulb.
  • the high-pressure discharge lamps with higher power consumption (1200 - 2500 watts) have retaining rings or clamps, which are welded to the power supply remote from the base and the crossbeam and are clamped against the outer bulb wall.
  • the object of the invention is to provide a low-cost frame structure for high-pressure discharge lamps with a base on one side, which ensures exact centering and a vibration-proof mounting of the discharge vessel in the outer bulb.
  • the one-piece design of the frame bracket simplifies the frame structure.
  • the two bevels which are formed directly on the crossbar of the frame bracket, a spring and clamping effect is achieved against the outer bulb wall.
  • fluctuations in the inside diameter of the outer bulb or in the dimensions of the frame bracket of approx. 5% can be compensated for, and on the other hand damage caused by impact loads, such as occur during transport, can be avoided.
  • the arrangement of the crossbar, the bevels and the frame sections with the four contact points, which are symmetrical with respect to the longitudinal axis, has a particularly advantageous effect because the thermal expansion of the frame maintains the axial orientation of the discharge vessel.
  • the four points of contact of the frame bracket sections running perpendicular to the longitudinal axis and to the crossbeam not only enable an exact axial alignment of the discharge vessel, but also improve heat dissipation.
  • the frame bracket is rounded in the area of the four contact points.
  • the flattening in the area of the first frame bracket section and the third slope increases the elasticity of the frame.
  • FIG. 1 shows a high-pressure discharge lamp with a base on one side, in particular a 575 watt metal halide discharge lamp, with a frame structure according to the invention.
  • the outer bulb 1 has a longitudinal axis 2 and sticks with its pinch 3 in the lamp base 4.
  • a discharge vessel 5 made of quartz glass is arranged axially symmetrically, which is held by a frame bracket 6 and by a support wire 7.
  • the frame bracket 6 and the support wire 7 together form the frame of the lamp.
  • the discharge vessel 5 has a base-side 8 and a base-remote 9 end from which a base-side 10 and a base-remote 11 power supply protrude. Both power supply lines 10, 11 are electrically conductively connected to a contact pin 13 via the support wire 7 or the frame bracket 6 and via a molybdenum foil 12 which is melted into the pinch 3.
  • the frame bracket 6 has in the area of the base-side end 8 of the discharge vessel 5 a glass envelope 14 which is melted into the pinch 3 and serves to increase the dielectric strength.
  • FIG. 2 to 5 Details of the frame bracket 6 are shown in Figures 2 to 5. It has a crossbar 15 running perpendicular to the longitudinal axis 2, which is welded to the power supply 11 remote from the base. The length of this crossbar 15 is considerably smaller than the inside diameter of the outer bulb 1. At the ends of the crossbar 15 arranged symmetrically with respect to the longitudinal axis 2, there are two bevels 16, 17, each with a straight line, orthogonal to the longitudinal axis 2 and Transverse bars 15 oriented frame bracket sections 20, 21 are clamped against the outer bulb wall at two contact points 18, 22, 19, 23.
  • the frame bracket section 20 is connected via a rounded knee 22 and a third slope 25 to the section 26 of the frame bracket 6 running parallel to the longitudinal axis 2.
  • the frame bracket is flattened in the area of the first frame bracket section 20 and the third slope 25 (FIG. 3).
  • the crossbeam 15, the first 16 and the second 17 slope and the first 20 and the second 21 frame bracket section are arranged in this first embodiment mirror-symmetrically to the plane which is aligned orthogonally to the crossbar 15 and contains the longitudinal axis 2 ( Figure 5).
  • the inner diameter of the outer bulb 1 is approximately 24 mm and the crossbar 15 has a length of approximately 16 mm.
  • the first 16 and the second 17 bevel are approximately 12 mm long and the two frame bracket sections 20, 21 have a length of approximately 11 mm.
  • a frame bracket 6 according to a second embodiment is shown in plan view.
  • the bevels 16 ', 17' and the frame bracket sections 20 ', 21' are not arranged mirror-symmetrically with respect to one plane, but they have an inversion symmetry with respect to an axis parallel to the longitudinal axis 2.
  • the views of the second exemplary embodiment corresponding to FIGS. 1 to 3 would not make any difference to the first exemplary embodiment, i.e. FIGS. 1 to 3 describe both the structure of the first and of the second exemplary embodiment.
  • the use of the frame structure described is not limited to the 575 watt high-pressure discharge lamp of the two disclosed exemplary embodiments.
  • the shape of the outer bulb can differ from the circular cylindrical shape.
  • the outer bulb can have an area with an enlarged diameter. This expanded area serves to accommodate the approximately spherical part of the discharge vessel.
  • the frame bracket adapts approximately in the expanded area to the contour of the outer bulb.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine einseitig gesockelte Hochdruck-Entladungslampe gemäß dem Oberbegriff des Schutzanspruchs 1.The invention relates to a high-pressure discharge lamp with a base on one side, according to the preamble of protective claim 1.

Insbesondere handelt es sich bei derartigen einseitig gesockelten Hochdruck-Entladungslampen um Metallhalogenid-Entladungslampen mit Leistungen von ca. 500 - 2500 Watt und relativ hohen Farbtemperaturen, wie sie bei Lichtquellen für Film- und Fernsehaufnahmen erwünscht sind. Diese Lampen benötigen ein Gestell, das eine stabile Halterung des Entladungsgefäßes im Außenkolben gewährleistet, so daß eine Veränderung der axialen Lage des Entladungsgefäßes, z.B. verursacht durch Erschütterungen, verhindert wird. Außerdem ist das Problem der unterschiedlichen thermischen Ausdehnung der verschiedenen Lampenteile hierbei zu berücksichtigen.In particular, such single-ended high-pressure discharge lamps are metal halide discharge lamps with powers of approx. 500-2,500 watts and relatively high color temperatures, as are desired with light sources for film and television recordings. These lamps require a frame that ensures a stable mounting of the discharge vessel in the outer bulb, so that a change in the axial position of the discharge vessel, e.g. caused by vibrations, is prevented. In addition, the problem of the different thermal expansion of the different lamp parts must be taken into account.

In der DE-OS 30 06 846 werden diese Probleme dadurch gelöst, daß beide Enden des Entladungsgefäßes von einem Führungselement in Form einer Manschette aus einem Metallband umgeben sind, das jeweils mit der Halterung des Entladungsgefäßes verbunden ist. Das Entladungsgefäß wird in seiner axialen Lage geführt, so daß eine thermische Ausdehnung nur in axiale Richtung erfolgen kann und eine seitliche Ausdehnung, z.B. durch Stoß, vermieden wird.
Allerdings erfordert diese Halterung des Entladungsgefäßes mit dem mehrteiligen Gestellaufbau einen recht aufwendigen Fertigungsprozeß.In DE-OS 30 06 846 these problems are solved in that both ends of the discharge vessel are surrounded by a guide element in the form of a sleeve made of a metal band, which is connected to the holder of the discharge vessel. The discharge vessel is guided in its axial position, so that thermal expansion can only take place in the axial direction and lateral expansion, for example due to impact, is avoided.
However, this mounting of the discharge vessel with the multi-part frame structure requires a very complex manufacturing process.

Einseitig gesockelte Hochdruck-Entladungslampen mit einem einfacheren Gestellaufbau werden in der EP-OS 209 345 offenbart. Der Gestellbügel ist hier einteilig ausgeführt und nur in der Quetschung des Außenkolbens verankert. Einen gewissen zusätzlichen Halt wird dem Gestellbügel durch eine teilweise Umhüllung mit einem Glasrohr gewährt, das teilweise im Außenkolben eingeschmolzen ist. Diese Entladungsgefäßhalterung ist für Lampen mit relativ kleinen Abmessungen, z.B.Hochdruck-Entladungslampen mit einer Leistungsaufnahme bis ca. 100 Watt geeignet. Für Hochdruck-Entladungslampen höherer Leistungsstufen bietet dieser Gestellaufbau keine ausreichend stabile Halterung des Entladungsgefäßes.Single-ended high-pressure discharge lamps with a simpler frame structure are disclosed in EP-OS 209 345. The frame bracket is made in one piece and only anchored in the pinch of the outer bulb. The frame bracket is given a certain additional hold by a partial covering with a glass tube, which is partially melted into the outer bulb. This discharge vessel holder is suitable for lamps with relatively small dimensions, e.g. high-pressure discharge lamps with a power consumption of up to approx. 100 watts. For high-pressure discharge lamps of higher power levels, this frame structure does not offer a sufficiently stable holder for the discharge vessel.

Im Handel sind einseitig gesockelte Hochdruck-Entladungslampen mit einer Leistungsaufnahme von ca. 500 - 2500 Watt erhältlich, die einen Gestellbügel mit einem senkrecht zur Lampenachse verlaufenden Querbalken besitzen, der mit der sockelfernen Stromzuführung verschweißt ist, wobei die sockelferne Stromzuführung über diesen Schweißpunkt hinaus verlängert und im Pumpstengel bzw. einer Auswölbung des Außenkolbens fixiert ist. Zusätzlich weisen insbesondere die Hochdruck-Entladungslampen höherer Leistungsaufnahme (1200 - 2500 Watt) Halteringe oder Spannbügel auf, die mit der sockelfernen Stromzuführung und dem Querbalken verschweißt sind und klemmend an der Außenkolbenwandung anliegen.High-pressure discharge lamps with a base on one side and a power consumption of approx. 500 - 2500 watts are available.These have a frame bracket with a crossbar running perpendicular to the lamp axis, which is welded to the power supply remote from the base, whereby the power supply remote from the base extends and extends beyond this welding point is fixed in the pump stem or a bulge of the outer bulb. In addition, in particular the high-pressure discharge lamps with higher power consumption (1200 - 2500 watts) have retaining rings or clamps, which are welded to the power supply remote from the base and the crossbeam and are clamped against the outer bulb wall.

Diese Lampen haben den Nachteil, daß die Befestigung der zusätzlichen Halteringe oder Spannbügel mehrere Arbeitsgänge erfordert und die Herstellungskosten des Gestells erhöhen, während bei Lampen ohne Halteringe bzw. Spannbügel die Erschütterungsfestigkeit nicht im gewünschten Maße gewährleistet ist.These lamps have the disadvantage that the attachment of the additional retaining rings or clamping brackets requires several operations and increase the manufacturing costs of the frame, while in the case of lamps without retaining rings or clamping brackets the vibration resistance is not guaranteed to the desired extent.

Die Aufgabe der Erfindung ist es, für einseitig gesockelte Hochdruck-Entladungslampen einen kostengünstigen Gestellaufbau bereitzustellen, der eine exakte Zentrierung und eine möglichst erschütterungssichere Halterung des Entladungsgefäßes im Außenkolben gewährleistet.The object of the invention is to provide a low-cost frame structure for high-pressure discharge lamps with a base on one side, which ensures exact centering and a vibration-proof mounting of the discharge vessel in the outer bulb.

Diese Aufgabe wird erfindungsgemaß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Besonders vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen ausgeführt.This object is achieved according to the invention by the characterizing features of claim 1. Particularly advantageous embodiments of the invention are set out in the subclaims.

Die Vorteile der Erfindung liegen darin, daß die einteilige Ausführung des Gestellbügels, den Gestellaufbau vereinfacht.
Mit Hilfe der beiden Schrägen, die unmittelbar an den Querbalken des Gestellbügels angeformt sind, wird eine Feder- und Klemmwirkung gegen die Außenkolbenwandung erzielt. Dadurch können einerseits Schwankungen im Innendurchmesser des Außenkolbens bzw. in den Abmessungen des Gestellbügels von ca. 5 % ausgeglichen werden und andererseits Schäden durch Stoßbeanspruchungen, wie sie beim Transport auftreten, vermieden werden.The advantages of the invention are that the one-piece design of the frame bracket simplifies the frame structure.
With the help of the two bevels, which are formed directly on the crossbar of the frame bracket, a spring and clamping effect is achieved against the outer bulb wall. On the one hand, fluctuations in the inside diameter of the outer bulb or in the dimensions of the frame bracket of approx. 5% can be compensated for, and on the other hand damage caused by impact loads, such as occur during transport, can be avoided.

Außerdem wird aber auch die thermische Ausdehnung des Gestells durch die Schrägen und den teilweise schleifenartigen Verlauf des Gestellbügels ausgeglichen.In addition, the thermal expansion of the frame is compensated for by the bevels and the partially loop-like course of the frame bracket.

Besonders vorteilhaft wirkt sich hierbei die bzgl. der Längsachse symmetrische Anordnung des Querbalkens, der Schrägen und der Gestellabschnitte mit den vier Berührpunkten aus, weil dadurch bei der thermischen Ausdehnung des Gestells die axiale Ausrichtung des Entladungsgefäßes erhalten bleibt.
Die vier Berührpunkte der senkrecht zur Längsachse und zum Querbalken verlaufenden Gestellbügelabschnitte ermöglichen nicht nur eine exakte axiale Ausrichtung des Entladungsgefäßes, sondern verbessern auch die Wärmeableitung.
Um ein Verkratzen des Außenkolbens zu vermeiden, ist der Gestellbügel im Bereich der vier Berührpunkte abgerundet. Die Anflachung im Bereich des ersten Gestellbügelabschnitts, und der dritten Schräge erhöht die Elastizität des Gestells.The arrangement of the crossbar, the bevels and the frame sections with the four contact points, which are symmetrical with respect to the longitudinal axis, has a particularly advantageous effect because the thermal expansion of the frame maintains the axial orientation of the discharge vessel.
The four points of contact of the frame bracket sections running perpendicular to the longitudinal axis and to the crossbeam not only enable an exact axial alignment of the discharge vessel, but also improve heat dissipation.
In order to avoid scratching the outer bulb, the frame bracket is rounded in the area of the four contact points. The flattening in the area of the first frame bracket section and the third slope increases the elasticity of the frame.

Die Erfindung wird nachstehend anhand mehrerer bevorzugter Ausführungsbeispiele näher erläutert. Es zeigen:

Figur 1
eine erfindungsgemäße einseitig gesockelte Hochdruck-Entladungslampe, teilweise geschnitten
Figur 2
eine Seitenansicht eines erfindungsgemäßen Gestellaufbaus mit einem Entladungsgefäß
Figur 3
der Gestellbügel nach Figur 2 in einer Seitenansicht, die gegenüber der der Figur 2 um 90° bzgl. der Längsachse gedreht ist
Figur 4
der Gestellbügel nach Figur 3 in einer Seitenansicht, die gegenüber der Figur 3 um 180° bzgl. der Längsachse gedreht ist
Figur 5
eine Draufsicht auf das Gestell aus den Figuren 1 bis 4
Figur 6
eine Draufsicht auf ein erfindungsgemäßes Gestell nach einem zweiten Ausführungsbeispiel.
The invention is explained in more detail below on the basis of several preferred exemplary embodiments. Show it:
Figure 1
a high-pressure discharge lamp based on one side, partially cut
Figure 2
a side view of a frame structure according to the invention with a discharge vessel
Figure 3
the frame bracket of Figure 2 in a side view, which is rotated by 90 ° with respect to the longitudinal axis
Figure 4
3 in a side view, which is rotated by 180 ° with respect to the longitudinal axis
Figure 5
a plan view of the frame of Figures 1 to 4
Figure 6
a plan view of a frame according to the invention according to a second embodiment.

In Figur 1 ist eine einseitig gesockelte Hochdruck-Entladungslampe, insbesondere eine 575 Watt Metallhalogenid-Entladungslampe, mit einem erfindungsgemäßen Gestellaufbau dargestellt.1 shows a high-pressure discharge lamp with a base on one side, in particular a 575 watt metal halide discharge lamp, with a frame structure according to the invention.

Der Außenkolben 1 besitzt eine Längsachse 2 und stekt mit seiner Quetschung 3 im Lampensockel 4. Innerhalb des Außenkolbens 1 ist ein Entladungsgefäß 5 aus Quarzglas axialsymmetrisch angeordnet, das von einem Gestellbügel 6 und von einem Stützdraht 7 gehaltert wird. Der Gestellbügel 6 und der Stützdraht 7 bilden zusammen das Gestell der Lampe. Das Entladungsgefäß 5 besitzt ein sockelseitiges 8 und ein sockelfernes 9 Ende aus denen eine sockelseitige 10 bzw. eine sockelferne 11 Stromzuführung herausragen. Beide Stromzuführungen 10,11 sind über den Stützdraht 7 bzw. den Gestellbügel 6 und über je eine in der Quetschung 3 eingeschmolzene Molybdänfolie 12 elektrisch leitend mit einem Kontaktstift 13 verbunden.
Der Gestellbügel 6 weist im Bereich des sockelseitigen Endes 8 des Entladungsgefäßes 5 eine Glasumhüllung 14 auf, die in der Quetschung 3 eingeschmolzen ist und zur Erhöhung der elektrischen Durchschlagsfestigkeit dient.The outer bulb 1 has a longitudinal axis 2 and sticks with its pinch 3 in the lamp base 4. Inside the outer bulb 1, a discharge vessel 5 made of quartz glass is arranged axially symmetrically, which is held by a frame bracket 6 and by a support wire 7. The frame bracket 6 and the support wire 7 together form the frame of the lamp. The discharge vessel 5 has a base-side 8 and a base-remote 9 end from which a base-side 10 and a base-remote 11 power supply protrude. Both power supply lines 10, 11 are electrically conductively connected to a contact pin 13 via the support wire 7 or the frame bracket 6 and via a molybdenum foil 12 which is melted into the pinch 3.
The frame bracket 6 has in the area of the base-side end 8 of the discharge vessel 5 a glass envelope 14 which is melted into the pinch 3 and serves to increase the dielectric strength.

Einzelheiten des Gestellbügels 6 sind in den Figuren 2 bis 5 dargestellt. Er besitzt einen senkrecht zur Längsachse 2 verlaufenden Querbalken 15, der mit der sockelfernen Stromzuführung 11 verschweißt ist. Die Länge dieses Querbalkens 15 ist erheblich kleiner als der Innendurchmesser des Außenkolbens 1. An die symmetrisch bzgl. der Längsachse 2 angeordneten Enden des Querbalkens 15 schließen sich zwei Schrägen 16,17 an, die jeweils mit einem geradlinig verlaufendem, orthogonal zur Längsachse 2 und zum Querbalken 15 orientierten Gestellbügelabschnitte 20,21 in je zwei Berührpunkten 18,22,19,23 klemmend an der Außenkolbenwandung anliegen. Um ein Verkratzen des Außenkolbens 1 zu vermeiden, sind alle Berührpunkte 18,19,22,23 als abgerundete Ecken ausgeführt und das freie Ende des Gestellbügels 6 wird vom Fortsatz 24 gebildet, der aus demselben Grund von der Außenkolbenwandung weggerichtet ist.
Der Gestellbügelabschnitt 20 ist über ein abgerundetes Knie 22 und eine dritte Schräge 25 mit dem parallel zur Längsachse 2 verlaufenden Abschnitt 26 des Gestellbügels 6 verbunden. Im Bereich des ersten Gestellbügelabschnittes 20 und der dritten Schräge 25 ist der Gestellbügel angeflacht (Figur 3).
Der Querbalken 15, die erste 16 und die zweite 17 Schräge sowie der erste 20 und der zweite 21 Gestellbügelabschnitt sind bei diesem ersten Ausführungsbeispiel spiegelsymmetrisch zu der Ebene angeordnet, die orthogonal zum Querbalken 15 ausgerichtet ist und die Längsachse 2 enthält (Figur 5).
Bei diesem Ausführungsbeispiel beträgt der Innendurchmesser des Außenkolbens 1 ca. 24 mm und der Querbalken 15 hat eine Länge von ungefähr 16 mm.Details of the frame bracket 6 are shown in Figures 2 to 5. It has a crossbar 15 running perpendicular to the longitudinal axis 2, which is welded to the power supply 11 remote from the base. The length of this crossbar 15 is considerably smaller than the inside diameter of the outer bulb 1. At the ends of the crossbar 15 arranged symmetrically with respect to the longitudinal axis 2, there are two bevels 16, 17, each with a straight line, orthogonal to the longitudinal axis 2 and Transverse bars 15 oriented frame bracket sections 20, 21 are clamped against the outer bulb wall at two contact points 18, 22, 19, 23. In order to avoid scratching the outer bulb 1, all contact points 18, 19, 22, 23 are designed as rounded corners and the free end of the frame bracket 6 is formed by the extension 24, which for the same reason is directed away from the outer bulb wall.
The frame bracket section 20 is connected via a rounded knee 22 and a third slope 25 to the section 26 of the frame bracket 6 running parallel to the longitudinal axis 2. The frame bracket is flattened in the area of the first frame bracket section 20 and the third slope 25 (FIG. 3).
The crossbeam 15, the first 16 and the second 17 slope and the first 20 and the second 21 frame bracket section are arranged in this first embodiment mirror-symmetrically to the plane which is aligned orthogonally to the crossbar 15 and contains the longitudinal axis 2 (Figure 5).
In this embodiment, the inner diameter of the outer bulb 1 is approximately 24 mm and the crossbar 15 has a length of approximately 16 mm.

Die erste 16 und die zweite 17 Schräge sind ca. 12 mm lang und die beiden Gestellbügelabschnitte 20,21 weisen eine Länge von ca. 11 mm auf.The first 16 and the second 17 bevel are approximately 12 mm long and the two frame bracket sections 20, 21 have a length of approximately 11 mm.

In Figur 6 ist ein Gestellbügel 6 nach einem zweiten Ausführungsbeispiel in Draufsicht dargestellt. Bei diesem zweiten Ausführungsbeispiel sind die Schrägen 16′,17′ und die Gestellbügelabschnitte 20′, 21′ nicht spiegelsymmetrisch bzgl. einer Ebene angeordnet, sondern sie weisen eine Inversionssymmetrie bzgl. einer zur Längsachse 2 parallelen Achse auf. Die den Figuren 1 bis 3 entsprechenden Ansichten des zweiten Ausführungsbeispieles würden allerdings keinen Unterschied zum ersten Ausführungsbeispiel ergeben, d.h., die Figuren 1 bis 3 beschreiben sowohl den Aufbau des ersten wie auch des zweiten Ausführungsbeispiels.In Figure 6, a frame bracket 6 according to a second embodiment is shown in plan view. In this second embodiment, the bevels 16 ', 17' and the frame bracket sections 20 ', 21' are not arranged mirror-symmetrically with respect to one plane, but they have an inversion symmetry with respect to an axis parallel to the longitudinal axis 2. However, the views of the second exemplary embodiment corresponding to FIGS. 1 to 3 would not make any difference to the first exemplary embodiment, i.e. FIGS. 1 to 3 describe both the structure of the first and of the second exemplary embodiment.

Die Verwendung des beschriebenen Gestellaufbaus ist nicht auf die 575 Watt Hochdruck-Entladungslampe der beiden offenbarten Ausführungsbeispiele beschränkt. Außerdem kann die Form des Außenkolbens von der kreiszylindrichen Form abweichen. Insbesondere kann der Außenkolben einen Bereich mit einem erweiterten Durchmesser aufweisen. Dieser erweiterte Bereich dient zur Aufnahme des annähernd kugelförmigen Teils des Entladungsgefäßes. Der Gestellbügel paßt sich im erweiterten Bereich in etwa der Kontur des Außenkolbens an.The use of the frame structure described is not limited to the 575 watt high-pressure discharge lamp of the two disclosed exemplary embodiments. In addition, the shape of the outer bulb can differ from the circular cylindrical shape. In particular, the outer bulb can have an area with an enlarged diameter. This expanded area serves to accommodate the approximately spherical part of the discharge vessel. The frame bracket adapts approximately in the expanded area to the contour of the outer bulb.

Claims (11)

  1. Single-cap high-pressure discharge lamp having
    - a transparent outer bulb (1) with a longitudinal axis (2),
    - a discharge vessel (5) which is arranged axially inside the outer bulb (1) and has a cap-side end (8) and a cap-remote end (9), from which a near-cap supply lead (10) and a cap-remote supply lead (11) are respectively led out,
    - a frame which serves to hold the discharge vessel (5) and comprises a support wire (7) connected to the near-cap supply lead (10) and a frame bracket (6) welded to the cap-remote supply lead (11), the support wire (7) and the frame bracket (6) being sealed near the cap in the outer bulb (1),
    characterized in that the frame bracket (6)
    - is in one piece,
    - has a cross bar (15) which is orientated at right angles to the longitudinal axis (2), whose length is substantially smaller than the inside diameter of the outer bulb (1), and is welded to the cap-remote supply lead (11),
    - has a first frame bracket section (20; 20′) and a second frame bracket section (21; 21′) which extend at right angles to the longitudinal axis (2) and at right angles to the cross bar (15) and are arranged on mutually opposite sides of the discharge vessel (5), the frame bracket sections (20, 21;20′, 21′) having a total of four contact points (18, 19, 22, 23; 18′, 19′, 22′, 23′) with the wall of the outer bulb (1), at which points the frame bracket (6) bears jammed against the outer bulb (1), and
    - has a first oblique part (16; 16′) and a second oblique part (17; 17′), which connect the first frame bracket section (20; 20′) and the second frame bracket section (21; 21′), respectively, to the cross bar (15).
  2. Single-cap high-pressure discharge lamp according to Claim 1, characterized in that the four contact points (18, 19, 22, 23; 18′, 19′, 22′, 23′) lie in a plane at right angles to the longitudinal axis (2).
  3. Single-cap high-pressure discharge lamp according to Claim 1, characterized in that the four contact points (18, 19, 22, 23; 18′, 19′, 22′, 23′) are constructed as rounded corners of the frame bracket (6) which bear jammed against the outer bulb wall.
  4. Single-cap high-pressure discharge lamp according to Claim 1, characterized in that the first frame bracket section (20; 20′) and second frame bracket section (21; 21′), the first oblique part (16; 16′) and second oblique part (17, 17′) as well as the cross bar (15) are symmetrically arranged.
  5. Single-cap high-pressure discharge lamp according to Claim 4, characterized in that the first frame bracket section (20; 20′) and second frame bracket section (21; 21′), the first oblique part (16; 16′) and second oblique part (17; 17′) and the cross bar (15) are arranged in a mirror-symmetric fashion with respect to the plane which contains the longitudinal axis (2) and is aligned orthogonally relative to the cross bar (15).
  6. Single-cap high-pressure discharge lamp according to Claim 4, characterized in that the first frame bracket section (20; 20′) and second frame bracket section (21; 21′), the first oblique part (16; 16′) and second oblique part (17; 17′) as well as the cross bar (15) are arranged with inversion symmetry relative to an axis parallel to the longitudinal axis (2).
  7. Single-cap high-pressure discharge lamp according to Claim 1, characterized in that the first frame bracket section (20; 20′) and second frame bracket section (21; 21′) extend rectilinearly.
  8. Single-cap high-pressure discharge lamp according to Claim 1, characterized in that the frame bracket sections (20, 21; 20′, 21′) and the cross bar (15) are arranged in different planes at right angles to the longitudinal axis (2).
  9. Single-cap high-pressure discharge lamp according to Claim 1, characterized in that the second frame bracket section (21; 21′) has an extension (24; 24′) which is directed away from the wall of the outer bulb (1).
  10. Single-cap high-pressure discharge lamp according to Claims 1 and 8, characterized in that the first frame bracket section (20; 20′) is connected via a rounded knee (22; 22′) and a third oblique part (25) to a section (26) of the frame bracket (6) which extends parallel to the longitudinal axis (2).
  11. Single-cap high-pressure discharge lamp according to Claim 9, characterized in that the frame bracket (6) is flattened in the region of the first frame bracket section (20; 20′) and the third oblique part (25).
EP91115114A 1990-09-19 1991-09-06 Single based high pressure discharge lamp Expired - Lifetime EP0476461B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9013279U 1990-09-19
DE9013279U DE9013279U1 (en) 1990-09-19 1990-09-19 Single-ended high-pressure discharge lamp

Publications (2)

Publication Number Publication Date
EP0476461A1 EP0476461A1 (en) 1992-03-25
EP0476461B1 true EP0476461B1 (en) 1995-04-19

Family

ID=6857660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115114A Expired - Lifetime EP0476461B1 (en) 1990-09-19 1991-09-06 Single based high pressure discharge lamp

Country Status (4)

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US (1) US5164630A (en)
EP (1) EP0476461B1 (en)
JP (1) JP2549419Y2 (en)
DE (2) DE9013279U1 (en)

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JP2511393B2 (en) * 1992-09-15 1996-06-26 パテント−トロイハント−ゲゼルシヤフト フユア エレクトリツシエ グリユーランペン ミツト ベシユレンクテル ハフツング Metal halide lamp
ATE208085T1 (en) * 1997-01-31 2001-11-15 Heraeus Noblelight Gmbh OPTICAL EDITOR
DE19916877A1 (en) * 1999-04-14 2000-10-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Discharge lamp with base
JP3657461B2 (en) * 1999-06-15 2005-06-08 株式会社小糸製作所 Discharge bulb
JP2003505847A (en) * 1999-07-27 2003-02-12 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 lamp
CN1860582A (en) * 2004-03-12 2006-11-08 松下电器产业株式会社 Metal vapor discharge lamp and method of producing the same, and reflector-equipped lamp
DE102006014294A1 (en) * 2006-03-28 2007-10-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electrical lamp has tubing-like piston locked at one end with circle-cylindrical socket, where electric conductor is gas-tight guided through end
US8896205B1 (en) * 2013-10-18 2014-11-25 Amc Automation Co., Ltd. Quartz light
CN103646846B (en) * 2013-12-10 2016-08-17 宁波亚茂光电股份有限公司 The supporting structure of compact high pressure sodium lamp

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Also Published As

Publication number Publication date
JPH0499661U (en) 1992-08-28
DE9013279U1 (en) 1990-11-22
EP0476461A1 (en) 1992-03-25
DE59105239D1 (en) 1995-05-24
US5164630A (en) 1992-11-17
JP2549419Y2 (en) 1997-09-30

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