EP0890976B1 - Lampe à décharge haute pression - Google Patents

Lampe à décharge haute pression 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
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
pressure discharge
lamp according
sections
outer bulb
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
EP98111186A
Other languages
German (de)
English (en)
Other versions
EP0890976A2 (fr
EP0890976A3 (fr
Inventor
Klaus Kramer
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
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0890976A2 publication Critical patent/EP0890976A2/fr
Publication of EP0890976A3 publication Critical patent/EP0890976A3/fr
Application granted granted Critical
Publication of EP0890976B1 publication Critical patent/EP0890976B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/92—Lamps 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.

Landscapes

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

Claims (10)

  1. Lampe à décharge haute pression, constituée de
    une ampoule (2) extérieure,
    deux enceintes (8) de décharge, ayant des électrodes et une atmosphère, qui sont disposées à l'intérieur de l'ampoule extérieure, en étant sensiblement parallèles entre elles,
    une monture (7) de maintien, qui immobilise les enceintes (8) de décharge à l'intérieur de l'ampoule extérieure et qui, au moins à une extrémité des enceintes, est reliée, au moyen d'un élément de liaison, d'une manière conductrice de l'électricité, aux électrodes, par des entrées (traversées) (16) de courant, sortant des enceintes (8) de décharge,
    caractérisée en ce que l'élément de liaison est une tôle (27) à estamper, qui est disposée transversalement à l'axe de la lampe et qui est constituée de deux moitiés qui sont reliées entre elles par une première partie pleine (28), chaque moitié (14) étant constituée d'un cadre (17) et d'une partie (22) intermédiaire s'y étendant élastiquement.
  2. Lampe à décharge haute pression suivant la revendication 1, caractérisée en ce que le cadre est constitué de quatre tronçons, la partie intermédiaire étant rattachée à l'un des tronçons.
  3. Lampe à décharge haute pression suivant la revendication 2, caractérisée en ce que la partie intermédiaire a un trou ou une fente, à l'aide duquel l'entrée de courant ou la traversée est fixé.
  4. Lampe à décharge haute pression suivant la revendication 2, caractérisée en ce que deux tronçons (20) des deux moitiés sont disposés côte à côte parallèlement.
  5. Lampe à décharge haute pression suivant la revendication 4, caractérisée en ce que les deux tronçons (20 ; 31), disposés côte à côte parallèlement, sont reliés entre eux par au moins une partie pleine (33 ; 36) supplémentaire.
  6. Lampe à décharge haute pression suivant la revendication 1, caractérisée en ce que la tôle (27) à estamper est en acier (ou en fer), qui est revêtu d'une couche de nickel.
  7. Lampe à décharge haute pression suivant la revendication 1, caractérisée en ce que la tôle à estamper a une épaisseur d'environ 0,3 à 0,5 mm.
  8. Lampe à décharge haute pression suivant la revendication 1, caractérisée en ce que la tôle (27) à estamper a une plaque (18) coudée destinée à être soudée en vue d'être fixée à la monture (7) de maintien.
  9. Lampe à décharge haute pression suivant la revendication 1, caractérisée en ce que l'ampoule a un culot d'un côté, et en ce que l'élément de liaison établit le contact en commun avec l'extrémité (10), éloignée du culot, des enceintes (8) de décharge, et est relié à la partie de la monture (7) de maintien allant de l'extrémité éloignée du culot au culot.
  10. Lampe à décharge haute pression suivant la revendication 1, caractérisée en ce que la partie intermédiaire a des moulures (26) pour faciliter la liaison avec l'entrée de courant/traversée.
EP98111186A 1997-07-08 1998-06-18 Lampe à décharge haute pression Expired - Lifetime EP0890976B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29712013U DE29712013U1 (de) 1997-07-08 1997-07-08 Hochdruckentladungslampe
DE29712013U 1997-07-08

Publications (3)

Publication Number Publication Date
EP0890976A2 EP0890976A2 (fr) 1999-01-13
EP0890976A3 EP0890976A3 (fr) 1999-04-14
EP0890976B1 true EP0890976B1 (fr) 2002-09-18

Family

ID=8042813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111186A Expired - Lifetime EP0890976B1 (fr) 1997-07-08 1998-06-18 Lampe à décharge haute pression

Country Status (5)

Country Link
EP (1) EP0890976B1 (fr)
JP (1) JPH1173914A (fr)
AT (1) ATE224585T1 (fr)
DE (2) DE29712013U1 (fr)
HU (1) HU220725B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001039246A1 (fr) * 1999-11-22 2001-05-31 Koninklijke Philips Electronics N.V. Lampe a decharge haute pression
CN100353486C (zh) * 2000-06-07 2007-12-05 皇家菲利浦电子有限公司 高压放电灯

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 (ru) * 1983-04-11 1984-05-15 Всесоюзный Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Источников Света Им.А.Н.Лодыгина Газоразр дна лампа высокого давлени
DE3739008A1 (de) * 1987-11-17 1989-05-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe
DE8908561U1 (de) * 1989-07-13 1989-09-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe
US5173632A (en) * 1991-02-26 1992-12-22 Gte Products Corporation High pressure sodium arc discharge lamp with weldless arc tube support member
DE69222160T2 (de) * 1992-06-29 1998-02-19 Oce Tech Bv Montagestruktur für elektrooptische Vorrichtungen
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
EP0890976A2 (fr) 1999-01-13
DE29712013U1 (de) 1998-11-05
HU220725B1 (hu) 2002-05-28
HUP9801517A2 (hu) 1999-04-28
ATE224585T1 (de) 2002-10-15
JPH1173914A (ja) 1999-03-16
HUP9801517A3 (en) 2000-11-28
DE59805583D1 (de) 2002-10-24
HU9801517D0 (en) 1998-09-28
EP0890976A3 (fr) 1999-04-14

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