EP0890976B1 - High pressure discharge lamp - Google Patents

High pressure discharge lamp Download PDF

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Publication number
EP0890976B1
EP0890976B1 EP98111186A EP98111186A EP0890976B1 EP 0890976 B1 EP0890976 B1 EP 0890976B1 EP 98111186 A EP98111186 A EP 98111186A EP 98111186 A EP98111186 A EP 98111186A EP 0890976 B1 EP0890976 B1 EP 0890976B1
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EP
European Patent Office
Prior art keywords
discharge lamp
pressure discharge
lamp according
sections
outer bulb
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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
EP98111186A
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German (de)
French (fr)
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EP0890976A3 (en
EP0890976A2 (en
Inventor
Klaus Kramer
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Osram GmbH
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Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Publication of EP0890976A3 publication Critical patent/EP0890976A3/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/30Vessels; Containers
    • H01J61/34Double-wall vessels or containers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/92Lamps with more than one main discharge path

Definitions

  • the invention relates to a high-pressure discharge lamp with two Discharge vessels according to the preamble of claim 1. They have one common outer bulb for a pair of discharge vessels.
  • Such high-pressure discharge lamps are in particular high pressure sodium lamps with ceramic discharge tubes or also around metal halide discharge lamps with discharge tubes Quartz glass or ceramic.
  • high pressure sodium lamps with ceramic discharge tubes or also around metal halide discharge lamps with discharge tubes Quartz glass or ceramic.
  • the second serves as a replacement and is only switched on when the first fails.
  • Such lamps with double bulbs are known from US-A 5 173 632 and EP-A 615 276 known.
  • the connecting part to The support frame consists of a rigid perforated plate for reasons of stability Stainless steel or similar
  • the thermal discrepancy between the discharge vessel in operation and the one serving as a replacement second discharge vessel, the connecting part so strong that it bends and thus the exact axial alignment is jeopardized. Preventing the Deflection of the discharge vessels from the axial direction when subjected to shock loads is therefore no longer guaranteed.
  • EP-A 316 617 is a connecting part in a lamp with a Discharge vessel known a resilient stamped sheet metal part, which at the same time the electrical and mechanical holder of a single discharge vessel can accomplish and is very easy to automate.
  • the object of the invention is the structure of the holding frame in a high-pressure discharge lamp with two discharge tubes in an outer bulb to improve. At the same time, mechanical stability must be ensured against shock load, on the other hand for sufficient thermal Decoupling between the discharge vessels are taken care of.
  • the advantages of the invention are in particular that the shock resistance the lamp and at the same time thermal decoupling is guaranteed.
  • the connecting element according to the invention that consists of two halves, which are connected by a narrow bridge are connected, similarly low vibration as a rigid perforated plate is. This was confirmed by drop and swing table tests. It guarantees also an exact expansion of both discharge vessels in axially parallel direction.
  • the new bracket enables substantial reduction in the number of lamp components.
  • the guide element is designed so that it is the number of to be processed Weld spots reduced.
  • the material especially iron coated with nickel layer, trade name "Hilumin" the quality of the welded joints is improved.
  • the joke of the connecting part according to the invention is that the outer frame each half behaves approximately like a rigid plate, while the two inner intermediate parts of the two discharge vessels leave as much leeway individually as in the case of a single discharge tube. Despite the good shock resistance, there is a thermal decoupling between the two halves because the bridge is only a narrow one Creates a thermal bridge between the two halves.
  • the two discharge vessels are arranged parallel to each other within the outer bulb.
  • the outer bulb contains a holding frame that holds the discharge vessels fixed inside the outer bulb and at least at one end of the vessel with the electrodes in an electrically conductive manner leading out of the discharge vessels
  • Power supply lines in particular bushings made of niobium tubes, is connected by means of a connecting element.
  • the connecting element is a stamped sheet metal part that is transverse to the lamp axis is arranged and consists of two halves, which are connected to each other via a web are connected, each half consisting of a frame and one in it lying resilient intermediate part.
  • the frame advantageously consists of four connected sections together, with the intermediate part attaching to one of the sections.
  • the intermediate part advantageously has a bore on which the power supply or implementation is attached. This has the advantage that when in use of a tube as the evacuation and filling of the discharge vessel still possible after attaching the connecting element is. Instead of a bore, however, a pin-shaped one can be used Power supply also on an edge or indentation (for example a Slot) of the intermediate part.
  • Two sections of the frame of the two halves are in parallel close to each other. They are a few millimeters apart. For better The two parallel sections can be stabilized on the side opposite the web by a second narrow bridge to be connected.
  • the stamped sheet metal part is preferably made of stainless steel, which has a nickel layer is covered. Typical dimensions are at a thickness of about 0.3 to 0.5 mm and a total area of about 20x20 mm.
  • the stamped sheet metal part has an angled welding plate for fastening on the support frame, especially the metal support rod.
  • the outer bulb When used for high pressure sodium lamps, the outer bulb is usually one-sided socketed.
  • the connecting element contacts the end remote from the base of the discharge vessels and is common with that leading to the base Part of the support frame connected.
  • Figure 1 shows a high pressure sodium lamp 1 with a power consumption of 100 W. It has a cylindrical (or elliptical) outer bulb 2 made of tempered glass. One end of the piston has a screw base 3, while the other end has a rounded tip 4. At the Screw base 3 sits a plate base 5, through which in a known manner Screw base 3 from two feed wires 6 extend into the interior of the piston. They are components of a holding frame 7 for the two axially parallel and discharge vessels 8 arranged symmetrically to the lamp axis A. The one feed wire 6a is via a bracket 9 with each of the end 10 of the two discharge vessels 8 near the base Power supplies connected in the form of a niobium tube 11.
  • the other lead wire 6b is welded to a solid metal support rod 12 which extends axially parallel in the direction of the tip 4.
  • the end remote from the base the metal support rod 12 is angled transversely to the lamp axis and to one Pitch circle 13 bent on the circumference of the outer bulb in the amount of the approach the crest 4 rests.
  • stamped sheet metal part 27 by means of an angled welding plate 18 on the metal support rod 12 attached.
  • the stamped sheet metal part 27 serves as a connecting element, that extends transversely to the lamp axis to the end 15 of the discharge vessels remote from the base 8 extends and there with the niobium tubes 16, which as the implementation serve, is connected.
  • the construction of the connector 27 is explained in more detail below.
  • the ceramic discharge vessel 8 is each made of aluminum oxide. It has a cylindrical discharge volume that contains a filling of inert gas, Contains mercury and sodium. It also contains two electrodes facing each other and with the two niobium tubes 11, 16 in Connect. There are also getters in the outer bulb Maintaining a vacuum.
  • FIG Shown top view It is made of 0.5 mm thick Hilumin (stainless steel with Nickel coated). It essentially consists of two halves 14, a left half 14a and a right half 14b that are mirror symmetrical to each other with respect to a longitudinal axis B. Each half 14 consists of a stabilizing outer frame part 17 and one arranged therein Intermediate part 22. The frame part 17 is in principle square, but points additionally a slope.
  • the outer frame part 17 is half of 14 essentially four Intermediate part 22 circumferential sections 20, 24, 25, 29 formed.
  • the first is a straight section 20, the second forms one to the first section 20 acute-angled bevel 24, which is designed as a straight piece. This both parts are at one end across a transverse to the first section 20 arranged end piece 21 connected.
  • the slope 24 is a third section to the first section 20 parallel straight short section 25.
  • the latter is by a fourth Section, a meandering arch 29, with the second end of the first section 20 connected.
  • the two first sections 20 of both halves are close together and run in parallel.
  • the two third sections 25 are each on the outside arranged. They are parallel to the first sections 20.
  • the extension piece 21 consists of two sections 21a, b, which are connected by a web 28 connected to each other.
  • the extension 21b of the right half points for mounting on the frame rod 12 also on the sections 20, 25th an extension on the opposite side, some of which during assembly Is angled 90 ° and serves as a welding plate 18.
  • the intermediate part 22 On the meandering arch 29 sits inwards, i.e. pointing towards the inside of the frame, the intermediate part 22. It is as a plate-like fastener formed, which is provided with a central bore 23. The hole 23 is arranged in the built-in lamp at a distance from the lamp axis. The niobium tube is fastened to the bore 23 by means of three beads 26 offset from one another by 120 ° by projection welding. The welding plate 18 is attached in a similar manner is corrugated on the metal support rod 12 by means of projection welding.
  • the stamped part 27 All elements of the stamped part 27 except the angled welding plate 18th lie in one plane.
  • the ceramic discharge vessel expands during lamp operation 8, which is currently in operation, exactly parallel to the lamp axis, the intermediate part 22 can follow the deflection.
  • the stamped sheet metal part 27 enables a secure electrical connection between the upper one Power supply and the support rod of the support frame. Simultaneously follows it dampens the thermal expansion of the discharge vessel during operation unwanted vibrations. Further details on the principle of operation can be found in EP-A 316 617.
  • This embodiment is suitable in principle for all performance levels, if it does not have extremely good shock resistance at the same time arrives.
  • FIG 3 is another embodiment of an inventive Stamped sheet metal part 30 shown. It differs from the embodiment of Figure 2 in that the two straight first sections 31 now through a series of narrow webs 33 connected to each other like a bridge are. It is, as it were, only one stable, wide section with breakthroughs along its center line. Otherwise match same reference numerals same components as in Figure 2.
  • This embodiment is particularly shockproof. However, the thermal decoupling between the two halves 14a, b not quite as good as in the embodiment of Figure 2, so that the stamped sheet metal part 30 rather for small-watted Lamps.
  • a slot 32 is attached to the intermediate part 22 here Holding a pin-shaped power supply or feedthrough.
  • Figure 4 is another embodiment of an inventive Stamped sheet metal part 35 shown. It differs from the two embodiments of Figures 2 and 3 in that the two straight first sections 34 at the end distant from the web 28 again by a single one second web 36 are connected for better stabilization. Otherwise the same components have the same reference numerals as in Figure 2.
  • This embodiment lies in its properties, what impact resistance and thermal decoupling concerns between the embodiments of Figures 2 and 3. It is therefore primarily for medium power levels suitable.

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  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The lamp consists of an outer bulb with two discharge vessels located inside approximately in parallel and containing electrodes and a filling. A support base fixes the discharge vessels inside the outer bulb. At least at one end the vessel are connected electrically through bushings by a connector. The connector is a stamping part (27) located at 90 degrees to the lamp axis and consisting of two half sections. Each half (14) consists of a frame (17) containing a sprung section (22). The frame can be made up of four segments with the sprung section set in one of the segments.

Description

Technisches GebietTechnical field

Die Erfindung bezieht sich auf eine Hochdruckentladungslampe mit zwei Entladungsgefäßen nach dem Oberbegriff des Anspruchs 1. Sie besitzen einen gemeinsamen Außenkolben für ein Paar von Entladungsgefäßen.The invention relates to a high-pressure discharge lamp with two Discharge vessels according to the preamble of claim 1. They have one common outer bulb for a pair of discharge vessels.

Bei derartigen Hochdruckentladungslampen handelt es sich insbesondere um Natriumhochdrucklampen mit keramischem Entladungsgefäßen oder auch um Metallhalogenidentladungslampen mit Entladungsgefäßen aus Quarzglas oder Keramik. Dabei ist aber nur ein Entladungsgefäß in Betrieb, während das zweite als Ersatz dient und erst eingeschaltet wird, wenn das erste ausfällt.Such high-pressure discharge lamps are in particular high pressure sodium lamps with ceramic discharge tubes or also around metal halide discharge lamps with discharge tubes Quartz glass or ceramic. However, only one discharge vessel is in operation, while the second serves as a replacement and is only switched on when the first fails.

Stand der TechnikState of the art

Besonders bei Natriumhochdrucklampen tritt das Problem auf, daß das keramische Entladungsgefäß einen außerordentlich hohen thermische Ausdehnungskoeffizienten aufweist. Wegen der hohen Betriebstemperatur von mehr als 1000°C ist es notwendig, eine Anpassung an dies unterschiedliche Ausdehnung (verglichen mit metallischem Haltegestell und Außenkolben aus Hartglas) vorzunehmen. Dieses Problem verschärft sich bei den gattungsgemäßen Lampen, weil nur ein Entladungsgefäß in Betrieb ist. The problem arises in particular with high-pressure sodium lamps that the ceramic Discharge vessel has an extraordinarily high coefficient of thermal expansion having. Because of the high operating temperature of more than 1000 ° C it is necessary to adapt to this different Expansion (compared to the metal support frame and outer bulb made of tempered glass). This problem is exacerbated in the generic Lamps because only one discharge vessel is in operation.

Derartige Lampen mit Doppelkolben sind aus der US-A 5 173 632 und der EP-A 615 276 bekannt. Sie benötigen ein besonders stabiles Haltegestell, das die Entladungsgefäße im Außenkolben haltert. Das Verbindungsteil zum Haltegestell besteht aus Stabilitätsgründen aus einer starren Lochplatte aus Edelstahl o.ä. Dabei belastet aber die thermische Diskrepanz zwischen dem in Betrieb befindlichen Entladungsgefäß und dem als Ersatz dienenden zweiten Entladungsgefäß das Verbindungsteil so stark, daß es sich verbiegt und somit die exakte axiale Ausrichtung gefährdet wird. Ein Verhindern des Auslenken der Entladungsgefäße aus der axialen Richtung bei Stoßbelastung ist somit nicht mehr gewährleistet.Such lamps with double bulbs are known from US-A 5 173 632 and EP-A 615 276 known. You need a particularly stable support frame that the discharge vessels in the outer bulb. The connecting part to The support frame consists of a rigid perforated plate for reasons of stability Stainless steel or similar However, the thermal discrepancy between the discharge vessel in operation and the one serving as a replacement second discharge vessel, the connecting part so strong that it bends and thus the exact axial alignment is jeopardized. Preventing the Deflection of the discharge vessels from the axial direction when subjected to shock loads is therefore no longer guaranteed.

Aus der EP-A 316 617 ist als Verbindungsteil bei einer Lampe mit einem Entladungsgefäß ein federndes Stanzblechteil bekannt, das gleichzeitig die elektrische und mechanische Halterung eines einzelnen Entladungsgefäßes bewerkstelligen kann und sehr leicht automatisierbar ist.From EP-A 316 617 is a connecting part in a lamp with a Discharge vessel known a resilient stamped sheet metal part, which at the same time the electrical and mechanical holder of a single discharge vessel can accomplish and is very easy to automate.

Darstellung der ErfindungPresentation of the invention

Aufgabe der Erfindung ist es, den Aufbau des Haltegestells bei einer Hochdruckentladungslampe mit zwei Entladungsgefäßen in einem Außenkolben zu verbessern. Dabei muß gleichzeitig einerseits für eine mechanische Stabilität gegen Stoßbelastung, andererseits für eine ausreichende thermische Entkopplung zwischen den Entladungsgefäßen gesorgt werden.The object of the invention is the structure of the holding frame in a high-pressure discharge lamp with two discharge tubes in an outer bulb to improve. At the same time, mechanical stability must be ensured against shock load, on the other hand for sufficient thermal Decoupling between the discharge vessels are taken care of.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere Ausbildungen der Erfindung, die besonders vorteilhaft sind, finden sich in den Unteransprüchen.This object is achieved by the characterizing features of claim 1 solved. Further developments of the invention that are particularly advantageous can be found in the subclaims.

Die Vorteile der Erfindung liegen insbesondere darin, daß die Stoßfestigkeit der Lampe und gleichzeitig die thermische Entkopplung garantiert ist. Überraschenderweise hat sich gezeigt, daß das erfindungsgemäße Verbindungselement, das aus zwei Hälften besteht, die durch einen schmalen Steg miteinander verbunden sind, ähnlich schwingungsarm wie eine starre Lochplatte ist. Dies wurde durch Fall- und Schwingtischversuche bestätigt. Es gewährleistest zudem eine exakte Ausdehnung beider Entladungsgefäße in achsparalleler Richtung. Darüber hinaus ermöglicht die neue Halterung eine wesentliche Reduzierung der Zahl der Lampenbauteile.The advantages of the invention are in particular that the shock resistance the lamp and at the same time thermal decoupling is guaranteed. Surprisingly has been shown that the connecting element according to the invention, that consists of two halves, which are connected by a narrow bridge are connected, similarly low vibration as a rigid perforated plate is. This was confirmed by drop and swing table tests. It guarantees also an exact expansion of both discharge vessels in axially parallel direction. In addition, the new bracket enables substantial reduction in the number of lamp components.

Die mechanische Verarbeitbarkeit des Haltegestells und damit die vollautomatische Montage der Lampe wird durch das erfindungsgemäße Verbindungsteil entscheidend erleichtert.The mechanical processability of the holding frame and thus the fully automatic Assembly of the lamp is done by the connecting part according to the invention significantly relieved.

Weiterhin ist das Führungselement so gestaltet, daß es die Zahl der zu verarbeitenden Schweißpunkte reduziert. Durch die sorgfältige Wahl des Materials (insbesondere Eisen mit Nickelschicht überzogen, Handelsname "Hilumin") wird die Qualität der Schweißverbindungen verbessert.Furthermore, the guide element is designed so that it is the number of to be processed Weld spots reduced. Through the careful choice of the material (especially iron coated with nickel layer, trade name "Hilumin") the quality of the welded joints is improved.

Der Witz des erfindungsgemäßen Verbindungsteils liegt darin, daß der Außenrahmen jeder Hälfte sich annähernd wie eine starre Platte verhält, während die beiden innen liegenden Zwischenteile den beiden Entladungsgefäßen einzeln so viel Spielraum lassen wie im Falle eines einzigen Entladungsgefäßes. Trotz der guten Stoßfestigkeit ist eine thermische Entkopplung zwischen den beiden Hälften sichergestellt, weil der Steg nur eine schmale Wärmebrücke zwischen den beiden Hälften schafft.The joke of the connecting part according to the invention is that the outer frame each half behaves approximately like a rigid plate, while the two inner intermediate parts of the two discharge vessels leave as much leeway individually as in the case of a single discharge tube. Despite the good shock resistance, there is a thermal decoupling between the two halves because the bridge is only a narrow one Creates a thermal bridge between the two halves.

Im einzelnen handelt es sich um eine Hochdruckentladungslampe bestehend aus einem Außenkolben, der zwei Entladungsgefäße mit Elektroden und einer Füllung (insbesondere Natrium enthaltend) enthält. Die beiden Entladungsgefäße sind innerhalb des Außenkolbens parallel zueinander angeordnet. Der Außenkolben enthält ein Haltegestell, das die Entladungsgefäße im Innern des Außenkolbens fixiert und das zumindest an einem Gefäßende mit den Elektroden elektrisch leitend über aus den Entladungsgefäßen herausgeführte Stromzuführungen, insbesondere Durchführungen aus Niobrohren, mittels eines Verbindungselements verbunden ist.In particular, it is a high-pressure discharge lamp from an outer bulb, the two discharge vessels with electrodes and a filling (especially containing sodium). The two discharge vessels are arranged parallel to each other within the outer bulb. The outer bulb contains a holding frame that holds the discharge vessels fixed inside the outer bulb and at least at one end of the vessel with the electrodes in an electrically conductive manner leading out of the discharge vessels Power supply lines, in particular bushings made of niobium tubes, is connected by means of a connecting element.

Das Verbindungselement ist ein Stanzblechteil, das quer zur Lampenachse angeordnet ist und aus zwei Hälften besteht, die über einen Steg miteinander verbunden sind, wobei jede Hälfte aus einem Rahmen und einem darin liegenden federnden Zwischenteil besteht.The connecting element is a stamped sheet metal part that is transverse to the lamp axis is arranged and consists of two halves, which are connected to each other via a web are connected, each half consisting of a frame and one in it lying resilient intermediate part.

Vorteilhaft setzt sich der Rahmen aus vier zusammenhängenden Abschnitten zusammen, wobei das Zwischenteil an einem der Abschnitte ansetzt.The frame advantageously consists of four connected sections together, with the intermediate part attaching to one of the sections.

Das Zwischenteil besitzt vorteilhaft eine Bohrung, an der die Stromzuführung bzw. Durchführung befestigt ist. Dies hat den Vorteil, daß bei Verwendung eines Rohres als Durchführung das Evakuieren und Füllen des Entladungsgefäßes nach Befestigen des Verbindungselements immer noch möglich ist. Statt an einer Bohrung kann jedoch eine insbesondere stiftförmige Stromzuführung auch an einer Kante oder Einbuchtung (beispielsweise ein Schlitz) des Zwischenteils sitzen.The intermediate part advantageously has a bore on which the power supply or implementation is attached. This has the advantage that when in use of a tube as the evacuation and filling of the discharge vessel still possible after attaching the connecting element is. Instead of a bore, however, a pin-shaped one can be used Power supply also on an edge or indentation (for example a Slot) of the intermediate part.

Zwei Abschnitte des Rahmens der beiden Hälften liegen parallel nahe nebeneinander. Sie sind wenige Millimeter voneinander beabstandet. Zur besseren Stabilisierung können die zwei parallel nebeneinander liegenden Abschnitte an der dem Steg gegenüberliegenden Seite durch einen zweiten schmalen Steg miteinander verbunden sein.Two sections of the frame of the two halves are in parallel close to each other. They are a few millimeters apart. For better The two parallel sections can be stabilized on the side opposite the web by a second narrow bridge to be connected.

Eine andere besonders stabile Lösung besteht darin, die beiden parallelen Abschnitte durch mehrere schmale Stege brückenartig miteinander zu verbinden. Entscheidend dabei ist, daß die Stege so schmal sind, daß die thermische Entkopplung zwischen den beiden Entladungsgefäßen, von denen ja nur immer eines in Betrieb ist, dadurch nicht gefährdet wird. Bei zu starker Kopplung bilden sich Verwerfungen und das Blechteil verformt sich. Another particularly stable solution is the two parallel ones To connect sections with several narrow bridges like a bridge. It is crucial that the webs are so narrow that the thermal Decoupling between the two discharge vessels, of which yes only one is always in operation, so that it is not endangered. If it is too strong Couplings form faults and the sheet metal part deforms.

Das Stanzblechteil ist bevorzugt aus Edelstahl gefertigt, der mit einer Nikkelschicht überzogen ist. Typische Abmessungen liegen bei einer Dicke von etwa 0,3 bis 0,5 mm und einer Fläche über alles von etwa 20x20 mm.The stamped sheet metal part is preferably made of stainless steel, which has a nickel layer is covered. Typical dimensions are at a thickness of about 0.3 to 0.5 mm and a total area of about 20x20 mm.

Das Stanzblechteil besitzt eine abgewinkelte Schweißplatte zur Befestigung am Haltegestell, insbesondere dem Metallstützstab.The stamped sheet metal part has an angled welding plate for fastening on the support frame, especially the metal support rod.

Beim Einsatz für Natriumhochdrucklampe ist meist der Außenkolben einseitig gesockelt. Das Verbindungselement kontaktiert das sockelferne Ende der Entladungsgefäße gemeinsam und ist mit dem zum Sockel führenden Teil des Haltegestells verbunden.When used for high pressure sodium lamps, the outer bulb is usually one-sided socketed. The connecting element contacts the end remote from the base of the discharge vessels and is common with that leading to the base Part of the support frame connected.

Figurencharacters

Drei Ausführungsbeispiele der Erfindung sollen im folgenden näher erläutert werden. Es zeigt

Figur 1
eine Natriumhochdrucklampe mit zwei Entladungsgefäßen
Figur 2
die Draufsicht auf ein erstes Ausführungsbeispiel eines Verbindungsteils
Figur 3
die Draufsicht auf ein zweites Ausführungsbeispiel eines Verbindungsteils
Figur 4
die Draufsicht auf ein drittes Ausführungsbeispiel eines Verbindungsteils
Three embodiments of the invention will be explained in more detail below. It shows
Figure 1
a high pressure sodium lamp with two discharge tubes
Figure 2
the top view of a first embodiment of a connecting part
Figure 3
the top view of a second embodiment of a connecting part
Figure 4
the top view of a third embodiment of a connecting part

Beschreibung der ZeichnungenDescription of the drawings

Figur 1 zeig eine Natriumhochdrucklampe 1 mit einer Leistungsaufnahme von 100 W. Sie weist einen zylindrischen (oder auch elliptischen) Außenkolben 2 aus Hartglas auf. Das eine Ende des Kolbens besitzt einen Schraubsokkel 3, während das andere Ende eine abgerundete Kuppe 4 aufweist. Am Schraubsockel 3 sitzt ein Tellerfuß 5, durch den sich in bekannter Weise vom Schraubsockel 3 aus zwei Zuführungsdrähte 6 in das Kolbeninnere erstrekken. Sie sind Bestandteile eines Haltegestells 7 für die beiden achsparallel und symmetrisch zur Lampenachse A angeordneten Entladungsgefäße 8. Der eine Zuführungsdraht 6a ist über einen Bügel 9 mit den jeweils aus dem sockelnahen Ende 10 der beiden Entladungsgefäße 8 herausgeführten Stromzuführungen in Gestalt eines Niobrohrs 11 verbunden. Der andere Zuführungsdraht 6b ist mit einem massiven Metallstützstab 12 verschweißt, der sich achsparallel in Richtung der Kuppe 4 erstreckt. Das sockelferne Ende des Metallstützstabs 12 ist quer zur Lampenachse abgewinkelt und zu einem Teilkreis 13 gebogen, der am Umfang des Außenkolbens in Höhe des Ansatzes der Kuppe 4 anliegt.Figure 1 shows a high pressure sodium lamp 1 with a power consumption of 100 W. It has a cylindrical (or elliptical) outer bulb 2 made of tempered glass. One end of the piston has a screw base 3, while the other end has a rounded tip 4. At the Screw base 3 sits a plate base 5, through which in a known manner Screw base 3 from two feed wires 6 extend into the interior of the piston. They are components of a holding frame 7 for the two axially parallel and discharge vessels 8 arranged symmetrically to the lamp axis A. The one feed wire 6a is via a bracket 9 with each of the end 10 of the two discharge vessels 8 near the base Power supplies connected in the form of a niobium tube 11. The other lead wire 6b is welded to a solid metal support rod 12 which extends axially parallel in the direction of the tip 4. The end remote from the base the metal support rod 12 is angled transversely to the lamp axis and to one Pitch circle 13 bent on the circumference of the outer bulb in the amount of the approach the crest 4 rests.

Etwas unterhalb des Teilkreises 13 ist quer zur Lampenachse liegend ein Stanzblechteil 27 mittels einer abgewinkelten Schweißplatte 18 am Metallstützstab 12 befestigt. Das Stanzblechteil 27 dient als Verbindungselement, das sich quer zur Lampenachse zum sockelfernen Ende 15 der Entladungsgefäße 8 erstreckt und dort mit den Niobrohren 16, die als Durchführung dienen, verbunden ist. Die Konstruktion des Verbindungselements 27 ist weiter unten näher erläutert.Somewhat below the pitch circle 13 is a transverse to the lamp axis Stamped sheet metal part 27 by means of an angled welding plate 18 on the metal support rod 12 attached. The stamped sheet metal part 27 serves as a connecting element, that extends transversely to the lamp axis to the end 15 of the discharge vessels remote from the base 8 extends and there with the niobium tubes 16, which as the implementation serve, is connected. The construction of the connector 27 is explained in more detail below.

Diese Anordnung führt zu einer besonders wirksamen Begrenzung der Amplitude der Auslenkung des Entladungsgefäßes. Auf ein zweites Verbindungselement am sockelnahen Ende des Entladungsgefäßes kann dabei verzichtet werden.This arrangement leads to a particularly effective limitation of the Amplitude of the deflection of the discharge vessel. On a second connector at the base near the end of the discharge vessel to be dispensed with.

Das keramische Entladungsgefäß 8 ist jeweils aus Aluminiumoxid gefertigt. Es besitzt ein zylindrisches Entladungsvolumen, das eine Füllung aus Inertgas, Quecksilber und Natrium enthält. Weiterhin enthält es zwei Elektroden, die einander gegenüberstehen und mit den beiden Niobrohren 11, 16 in Verbindung stehen. Weiterhin befinden sich im Außenkolben Getter zur Aufrechterhaltung eines Vakuums.The ceramic discharge vessel 8 is each made of aluminum oxide. It has a cylindrical discharge volume that contains a filling of inert gas, Contains mercury and sodium. It also contains two electrodes facing each other and with the two niobium tubes 11, 16 in Connect. There are also getters in the outer bulb Maintaining a vacuum.

Ein erstes Ausführungsbeispiel des Stanzblechteils 27 ist in Figur 2 in Draufsicht dargestellt. Es ist aus 0,5 mm dickem Hilumin (Edelstahl mit Nickel beschichtet) gefertigt. Es besteht im wesentlichen aus zwei Hälften 14, einer linken Hälfte 14a und einer rechten Hälfte 14b, die spiegelsymmetrisch zueinander in bezug auf eine Längsachse B sind. Jede Hälfte 14 besteht aus einem stabilisierenden äußeren Rahmenteil 17 und einem darin angeordneten Zwischenteil 22. Das Rahmenteil 17 ist im Prinzip viereckig, weist aber zusätzlich eine Schräge auf.A first exemplary embodiment of the stamped sheet metal part 27 is shown in FIG Shown top view. It is made of 0.5 mm thick Hilumin (stainless steel with Nickel coated). It essentially consists of two halves 14, a left half 14a and a right half 14b that are mirror symmetrical to each other with respect to a longitudinal axis B. Each half 14 consists of a stabilizing outer frame part 17 and one arranged therein Intermediate part 22. The frame part 17 is in principle square, but points additionally a slope.

Das äußere Rahmenteil 17 wird pro Hälfte 14 im wesentlichen von vier das Zwischenteil 22 umfangenden Abschnitten 20, 24, 25, 29 gebildet. Der erste ist ein gerader Abschnitt 20, der zweite bildet eine zum ersten Abschnitt 20 spitzwinkelig liegende Schräge 24, die als gerades Stück ausgeführt ist. Diese beiden Teile sind an ihrem einem Ende über ein quer zum ersten Abschnitt 20 angeordnetes Ansatzstück 21 verbunden.The outer frame part 17 is half of 14 essentially four Intermediate part 22 circumferential sections 20, 24, 25, 29 formed. The first is a straight section 20, the second forms one to the first section 20 acute-angled bevel 24, which is designed as a straight piece. This both parts are at one end across a transverse to the first section 20 arranged end piece 21 connected.

An die Schräge 24 schließt sich als dritter Abschnitt ein zum ersten Abschnitt 20 paralleler gerader kurzer Abschnitt 25 an. Letzterer ist durch einen vierten Abschnitt, ein Mäanderbogen 29, mit dem zweiten Ende des ersten Abschnitts 20 verbunden.The slope 24 is a third section to the first section 20 parallel straight short section 25. The latter is by a fourth Section, a meandering arch 29, with the second end of the first section 20 connected.

Die beiden ersten Abschnitte 20 beider Hälften liegen dicht beieinander und laufen parallel. Die beiden dritten Abschnitte 25 sind jeweils außenliegend angeordnet. Sie sind parallel zu den ersten Abschnitten 20.The two first sections 20 of both halves are close together and run in parallel. The two third sections 25 are each on the outside arranged. They are parallel to the first sections 20.

Das Ansatzstück 21 besteht aus zwei Teilstücken 21a,b, die über einen Steg 28 miteinander verbunden. Das Ansatzstück 21b der rechten Hälfte weist zur Montage am Gestellstab 12 außerdem an der von den Abschnitten 20, 25 abgewandten Seite eine Verlängerung auf, die bei der Montage teilweise um 90° abgewinkelt wird und als Schweißplatte 18 dient.The extension piece 21 consists of two sections 21a, b, which are connected by a web 28 connected to each other. The extension 21b of the right half points for mounting on the frame rod 12 also on the sections 20, 25th an extension on the opposite side, some of which during assembly Is angled 90 ° and serves as a welding plate 18.

Am Mäanderbogen 29 sitzt nach innen, also in das Innere des Rahmens weisend, das Zwischenteil 22. Es ist als ein plättchenartiges Befestigungselement ausgebildet, das mit einer zentralen Bohrung 23 versehen ist. Die Bohrung 23 ist in der eingebauten Lampe beabstandet von der Lampenachse angeordnet. Die Befestigung des Niobrohrs an der Bohrung 23 erfolgt mittels dreier um 120° gegeneinander versetzter Sicken 26 durch Buckelschweißen. In ähnlicher Weise erfolgt auch die Befestigung der Schweißplatte 18, die gewellt ist, am Metallstützstab 12 mittels Buckelschweißen.On the meandering arch 29 sits inwards, i.e. pointing towards the inside of the frame, the intermediate part 22. It is as a plate-like fastener formed, which is provided with a central bore 23. The hole 23 is arranged in the built-in lamp at a distance from the lamp axis. The niobium tube is fastened to the bore 23 by means of three beads 26 offset from one another by 120 ° by projection welding. The welding plate 18 is attached in a similar manner is corrugated on the metal support rod 12 by means of projection welding.

Alle Elemente des Stanzteils 27 außer der abgewinkelten Schweißplatte 18 liegen in einer Ebene. Im Lampenbetrieb dehnt sich das keramische Entladungsgefäß 8, das gerade in Betrieb ist, exakt parallel zur Lampenachse, wobei das Zwischenteil 22 der Auslenkung folgen kann. Das Stanzblechteil 27 ermöglicht dabei eine sichere elektrische Verbindung zwischen der oberen Stromzuführung und dem Stützstab des Haltegestells. Gleichzeitig folgt es der Wärmeausdehnung des Entladungsgefäßes im Betrieb und dämpft unerwünschte Schwingungen. Weitere Einzelheiten zur prinzipiellen Wirkungsweise finden sich in der EP-A 316 617.All elements of the stamped part 27 except the angled welding plate 18th lie in one plane. The ceramic discharge vessel expands during lamp operation 8, which is currently in operation, exactly parallel to the lamp axis, the intermediate part 22 can follow the deflection. The stamped sheet metal part 27 enables a secure electrical connection between the upper one Power supply and the support rod of the support frame. Simultaneously follows it dampens the thermal expansion of the discharge vessel during operation unwanted vibrations. Further details on the principle of operation can be found in EP-A 316 617.

Diese Ausführungsform ist prinzipiell für alle Leistungsstufen geeignet, wenn es dabei nicht auf gleichzeitige extrem gute Erschütterungsfestigkeit ankommt.This embodiment is suitable in principle for all performance levels, if it does not have extremely good shock resistance at the same time arrives.

In Figur 3 ist eine weiteres Ausführungsbeispiel eines erfindungsgemäßen Stanzblechteils 30 gezeigt. Es unterschiedet sich von der Ausführungsform der Figur 2 dadurch, daß die beiden geraden ersten Abschnitte 31 jetzt durch eine Reihe von schmalen Stegen 33 brückenartig miteinander verbunden sind. Es handelt sich gleichsam nur um einen einzigen stabilen breiten Abschnitt mit Durchbrüchen entlang seiner Mittellinie. Ansonsten entsprechen gleiche Bezugsziffern gleichen Bestandteilen wie in Figur 2. Diese Ausführungsform ist besonders stoßfest. Allerdings ist die thermische Entkopplung zwischen den beiden Hälften 14a,b nicht ganz so gut wie in der Ausführungsform der Figur 2, so daß sich das Stanzblechteil 30 eher für kleinwattige Lampen eignet.In Figure 3 is another embodiment of an inventive Stamped sheet metal part 30 shown. It differs from the embodiment of Figure 2 in that the two straight first sections 31 now through a series of narrow webs 33 connected to each other like a bridge are. It is, as it were, only one stable, wide section with breakthroughs along its center line. Otherwise match same reference numerals same components as in Figure 2. This embodiment is particularly shockproof. However, the thermal decoupling between the two halves 14a, b not quite as good as in the embodiment of Figure 2, so that the stamped sheet metal part 30 rather for small-watted Lamps.

Statt eine Bohrung ist hier ein Schlitz 32 am Zwischenteil 22 angebracht zur Halterung einer stiftförmigen Stromzuführung oder Durchführung.Instead of a hole, a slot 32 is attached to the intermediate part 22 here Holding a pin-shaped power supply or feedthrough.

In Figur 4 ist ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Stanzblechteils 35 gezeigt. Es unterscheidet sich von den beiden Ausführungsformen der Figur 2 und 3 dadurch, daß die beiden geraden ersten Abschnitte 34 an dem vom Steg 28 entfernten Ende nochmals durch einen einzelnen zweiten Steg 36 zur besseren Stabilisierung verbunden sind. Ansonsten entsprechen gleichen Bestandteilen die gleichen Bezugsziffern wie in Figur 2. Dieses Ausführungsbeispiel liegt in seinen Eigenschaften, was Stoßfestigkeit und thermische Entkopplung betrifft, zwischen den Ausführungsformen der Figur 2 und 3. Es ist daher vornehmlich für mittlere Leistungsstufen geeignet.In Figure 4 is another embodiment of an inventive Stamped sheet metal part 35 shown. It differs from the two embodiments of Figures 2 and 3 in that the two straight first sections 34 at the end distant from the web 28 again by a single one second web 36 are connected for better stabilization. Otherwise the same components have the same reference numerals as in Figure 2. This embodiment lies in its properties, what impact resistance and thermal decoupling concerns between the embodiments of Figures 2 and 3. It is therefore primarily for medium power levels suitable.

Claims (10)

  1. High-pressure discharge lamp comprising
    an outer bulb (2),
    two discharge vessels (8) with electrodes and filling which are arranged inside the outer bulb approximately parallel to one another, and
    a holding frame (7) which fixes the discharge vessels (8) in the interior of the outer bulb, and which is connected in an electrically conducting fashion to the electrodes by means of a connecting element at least at one vessel end via supply leads (lead-throughs) (16) guided out of the discharge vessels (8),
    characterized in that the connecting element is a stamped sheet metal part (27) which is arranged transverse to the lamp axis and consists of two halves which are connected to one another via a first web (28), each half (14) consisting of a frame (17) and a resilient adapter (22) situated therein.
  2. High-pressure discharge lamp according to Claim 1, characterized in that the frame consists of four sections, the adapter being attached to one of the sections.
  3. High-pressure discharge lamp according to Claim 2, characterized in that the adapter has a bore or a slot with the aid of which the supply lead or lead-through
  4. High-pressure discharge lamp according to Claim 2, characterized in that two sections (20) of the two halves are situated parallel to one another.
  5. High-pressure discharge lamp according to Claim 4, characterized in that the two sections (20; 31) situated in parallel are connected to one another by means of at least one additional web (33; 36).
  6. High-pressure discharge lamp according to Claim 1, characterized in that the stamped sheet metal part (27) is fabricated from steel (or iron) which is coated with a nickel layer.
  7. High-pressure discharge lamp according to Claim 1, characterized in that the stamped sheet metal part (27) has a thickness of approximately 0.3 to 0.5 mm.
  8. High-pressure discharge lamp according to Claim 1, characterized in that the stamped sheet metal part (27) has an angled-off welding plate (18) for fastening on the holding frame (7).
  9. High-pressure discharge lamp according to Claim 1, characterized in that the outer bulb is capped (4) at one end, and in that the connecting element makes joint contact with the end (10) of the discharge vessels (8) remote from the cap and is connected with the part of the holding frame (7) which leads from the end remote from the cap to the cap.
  10. High-pressure discharge lamp according to Claim 1, characterized in that the adapter has projections (26) for facilitating the connection to the supply lead/lead-through.
EP98111186A 1997-07-08 1998-06-18 High pressure discharge lamp Expired - Lifetime EP0890976B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29712013U DE29712013U1 (en) 1997-07-08 1997-07-08 High pressure discharge lamp
DE29712013U 1997-07-08

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EP0890976A2 EP0890976A2 (en) 1999-01-13
EP0890976A3 EP0890976A3 (en) 1999-04-14
EP0890976B1 true EP0890976B1 (en) 2002-09-18

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EP98111186A Expired - Lifetime EP0890976B1 (en) 1997-07-08 1998-06-18 High pressure discharge lamp

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EP (1) EP0890976B1 (en)
JP (1) JPH1173914A (en)
AT (1) ATE224585T1 (en)
DE (2) DE29712013U1 (en)
HU (1) HU220725B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4643878B2 (en) * 1999-11-22 2011-03-02 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 High pressure discharge lamp
WO2001095368A1 (en) * 2000-06-07 2001-12-13 Koninklijke Philips Electronics N.V. High-pressure discharge lamp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401913A (en) * 1981-06-03 1983-08-30 Gte Products Corporation Discharge lamp with mount providing self centering and thermal expansion compensation
SU1092607A1 (en) * 1983-04-11 1984-05-15 Всесоюзный Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Источников Света Им.А.Н.Лодыгина High-pressure gaseous-discharge lamp
DE3739008A1 (en) * 1987-11-17 1989-05-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP
DE8908561U1 (en) * 1989-07-13 1989-09-21 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
US5173632A (en) * 1991-02-26 1992-12-22 Gte Products Corporation High pressure sodium arc discharge lamp with weldless arc tube support member
DE69222160T2 (en) * 1992-06-29 1998-02-19 Oce Tech Bv Mounting structure for electro-optical devices
US5408157A (en) * 1993-03-09 1995-04-18 North American Philips Corporation Dual arc tube discharge lamp having a lamp frame with coplanar spot welds and slip-free construction

Also Published As

Publication number Publication date
DE59805583D1 (en) 2002-10-24
EP0890976A3 (en) 1999-04-14
HU220725B1 (en) 2002-05-28
EP0890976A2 (en) 1999-01-13
JPH1173914A (en) 1999-03-16
HUP9801517A3 (en) 2000-11-28
HU9801517D0 (en) 1998-09-28
ATE224585T1 (en) 2002-10-15
DE29712013U1 (en) 1998-11-05
HUP9801517A2 (en) 1999-04-28

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