EP0321866B1 - Lampe à d'echarge à haute pression - Google Patents

Lampe à d'echarge à haute pression Download PDF

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Publication number
EP0321866B1
EP0321866B1 EP88121023A EP88121023A EP0321866B1 EP 0321866 B1 EP0321866 B1 EP 0321866B1 EP 88121023 A EP88121023 A EP 88121023A EP 88121023 A EP88121023 A EP 88121023A EP 0321866 B1 EP0321866 B1 EP 0321866B1
Authority
EP
European Patent Office
Prior art keywords
cap
pressure discharge
discharge lamp
lamp according
hollow cylinder
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
EP88121023A
Other languages
German (de)
English (en)
Other versions
EP0321866A3 (en
EP0321866A2 (fr
Inventor
Manfred Gaugel
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 EP0321866A2 publication Critical patent/EP0321866A2/fr
Publication of EP0321866A3 publication Critical patent/EP0321866A3/de
Application granted granted Critical
Publication of EP0321866B1 publication Critical patent/EP0321866B1/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
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/56—Shape of the separate part

Definitions

  • the invention relates to a high-pressure discharge lamp according to the preamble of claim 1.
  • Such lamps usually have a relatively low power (order of magnitude 100 W) and are suitable, for example, for indoor lighting. For various reasons, however, the fitting of car headlights with these lamps has become the focus of interest.
  • a one-sided socket discharge lamp which uses a two-sided squeezed discharge vessel as a glass bulb (DE-OS 33 41 846).
  • the power supply led to the end of the discharge vessel remote from the base is here led back along the discharge vessel to the base.
  • the ignition behavior of the lamp is problematic since the high voltage required for this can easily lead to flashovers between the unprotected power supplies.
  • the free end of the discharge vessel, which is remote from the base is not supported and is therefore insufficiently protected against vibrations.
  • EP-A 0110054 discloses a high-pressure discharge lamp with a base on one side, the base of which has a receptacle into which the lamp envelope is inserted.
  • the invention ensures increased vibration and shock resistance.
  • the special design of the contact elements and their arrangement in the base prevents accidental incorrect connection and improves the high-voltage insulation. Touching live parts is excluded.
  • the construction of the base is particularly suitable even with very small dimensions of the lamp and ensures good contact with the socket.
  • the invention in particular makes it possible to carry out the adjustment of the base with respect to the piston with the particularly high accuracy required in headlight lamps.
  • the invention can be applied both to lamps with outer bulbs and to lamps without outer bulbs, the base at the first end of the first case Outer bulb - which is provided with a pinch seal - is fastened, while in the second case the base rests directly on the first end of the discharge vessel.
  • FIG. 1 and 2 show a motor vehicle discharge lamp 1 with an evacuated cylindrical outer bulb 2 made of tempered glass and a bilaterally squeezed discharge vessel 3 made of quartz glass, the cylindrical outer bulb 2 being aligned approximately in the axis of the discharge vessel 3.
  • the discharge vessel 3 contains two axially aligned electrodes 4, the electrical connection of which to the outside takes place in each case via a shaft 5, a molybdenum foil 6 and a feed line 7.
  • the filling of the discharge vessel 3 contains, in addition to an inert gas, 1 mg of mercury and 0.3 mg of halides of Na, Tl and Sc.
  • the outer bulb 2 has two ends 8, 9, each of which is closed in a vacuum-tight manner by a pinch seal. The melted pump tip 10 is attached laterally in the vicinity of the second end 9.
  • a first power supply 11 made of molybdenum is melted into the first end 8, the one with the closest one Lead 7a of the discharge vessel 3 is connected or forms a unit with it.
  • the first end 8 is held in a two-part base 12, consisting of a cup-shaped fixing sleeve 13 made of metal attached to the pinch seal 27 of the first end 8, which in turn is arranged in a receptacle 14 of a cylindrical adjusting ring 15 made of plastic.
  • the setting ring 15 is provided with two contact elements 16, 17, which produce a high-voltage-insulated and reverse-polarity-protected connection to an external power supply.
  • the first power supply line 11 is welded to the first contact element 16, via which the high voltage is fed in during the ignition of the lamp.
  • a second power supply 18 connects the second supply line 7b of the discharge vessel to the second contact element 17.
  • the second power supply 18 is expediently divided into two parts, a melting part 19 and a return part 20.
  • the melting part 19 first forms a U-shaped one Expansion loop 21 and is then guided axially through the second end 9 of the outer bulb 2 remote from the base, where it is melted vacuum-tight into the pinch seal of the second end 9.
  • the melting part 19 is made of molybdenum, so that an adaptation to the thermal expansion coefficient of tempered glass is guaranteed.
  • an end piece 22 of the return part 20 which extends at right angles to the lamp axis, is connected to the melting-down part 19 and is otherwise returned along the outer bulb parallel to the lamp axis as far as the second contact element 17.
  • the return part 20 is made of stainless steel wire. It instructs the bend to the end piece 22 has an annular expansion loop 23 and is encased in its axially parallel section by a ceramic capillary tube 24 which - for HV insulation - still protrudes far into the plastic body of the adjusting ring 15.
  • the longitudinal axis of the outer bulb is shifted somewhat against the longitudinal axis of the discharge vessel (cf. FIG. 2).
  • the shift is in the order of 0.5 to 1 mm.
  • the pinch seal of the discharge vessel and the outer bulb are rotated by 90 ° to save space.
  • the cup-shaped fixing sleeve 13 has a circular base part 25 and a circumferential cylindrical edge 26 which points towards the piston and is bent at a right angle.
  • the bottom part 25 is provided with a longitudinal slot 28 adapted to the cross-section of the pinch 27 of the first end 8, resilient barbs 29 being bent on its broad sides, which latch behind projecting pins 30 formed on the broad sides of the pinch 27.
  • the edge 26 of the Fixing sleeve 13 is provided with holes (not visible).
  • a hollow cylinder 31 is formed on the piston side of the cylindrical adjusting ring and forms the receptacle 14 for the fixing sleeve 13.
  • the diameter of the cylindrical edge 26 is expediently somewhat larger than the inside diameter of the hollow cylinder 31 and slotted in the longitudinal direction, so that when it is inserted into the receptacle, the fixing sleeve is provisionally held by spring forces.
  • the fixing sleeve can then still be moved in all spatial directions. After the adjustment has been made, the fixing sleeve is connected to the hollow cylinder 31 by HF welding, plastic material penetrating into the bores of the edge 26, as a result of which a particularly secure fastening is achieved.
  • a massive cross piece 32 is formed on the setting ring 15 on the side opposite the hollow cylinder 31. It is equipped with two axially parallel blind holes 33, 34 which keep the greatest possible distance from one another in order to make high voltage flashovers and leakage currents more difficult.
  • the first contact element 16 is arranged in the first blind hole 33. It consists of a metallic hollow cylinder 35 with a bottom part 36.
  • the outside diameter of the hollow cylinder 35 is adapted to the inside diameter of the first blind hole 33, the bottom part 36 abutting the bottom of the blind hole.
  • the height of the hollow cylinder 35 corresponds approximately to half the depth of the blind hole 33. This serves to provide particularly good protection against high voltage flashovers.
  • a tubular projection 37 is integrally formed on the adjusting ring 15.
  • the second contact element 17 consists of a second metallic hollow cylinder 38 with a second bottom part 39.
  • the second bottom part 39 is arranged in the opposite way to the first bottom part 35 in the first contact element 16 on the second hollow cylinder 38.
  • the second contact element 17 is held on the tubular projection 37, the inside diameter of the second hollow cylinder 38 being matched to the outside diameter of the tubular projection 37.
  • the bottom part 39 lies on the end of the projection 37.
  • the height of the second hollow cylinder corresponds to approximately 75% of the depth of the blind hole. Overall, this arrangement of the contact elements ensures good protection both against high voltage flashovers and against leakage currents.
  • the first, live power supply 11 is welded centrally in the bottom part 36 of the first contact element.
  • the second power supply 18, coming from the base-distant second end 9 of the outer bulb 2, is fed back parallel to the outer bulb 2 in the axis of the second contact element 17. It is received by a bore 40 in the hollow cylinder 31. This bore 40 extends continuously to the tubular projection 37.
  • the diameter of the bore 40 is adapted to the outer diameter of the capillary tube 24 (made of electrically-insulating, rigid material, for example ceramic or glass).
  • the second power supply 18 finally ends at the second bottom part 39, where it is welded.
  • the capillary tube 24 extends from the base distal end 9 of the outer bulb into the projection 37 and is guided in the bore 40 over approximately a third of its length, it acts as additional support for the second power supply 18 and the end 9 of the outer bulb remote from the base, whereby the vibration and shock resistance is further increased.
  • the capillary tube continues to act in a manner known per se as additional electrical insulation and protection against UV quanta.
  • the base construction according to the invention Due to their temperature resistance, plastics such as Ultem or Rayton are suitable for the setting ring.
  • plastics such as Ultem or Rayton are suitable for the setting ring.
  • a reduced overall height of the lamp is achieved due to the reduced installation depth of the base. Because there is no need for ceramic or micaver as the base material, the base is not only easy to work with, but is also characterized by its lower weight.
  • the division of the second power supply in two facilitates the manufacture of the lamp and the adjustment of the base on the bulb.

Landscapes

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

Claims (12)

  1. Lampe à décharge haute pression à culot d'un seul côté (1), présentant les caractéristiques suivantes :
    - une ampoule (3) de la lampe, qui est fermée des deux côtés et contient, outre un remplissage formé par des gaz rares et des métaux et des halogénures métalliques, deux électrodes (4) établissant une liaison électrique avec l'extérieur;
    - un culot (12), qui est disposé au niveau de la première extrémité de la douille (3) de la lampe;
    - deux entrées de courant (11,18), à l'aide desquels les électrodes (4) sont reliées respectivement à un élément de contact (16,17) dans le culot (12), les première et seconde entrées de courant (11,18) étant associées respectivement à l'extrémité, proche et éloignée du culot, de l'ampoule de la lampe, tandis qu'au moins l'extrémité, proche du culot, de l'ampoule de la lampe est fermée au moyen d'un pincement étanche, et que la seconde entrée de courant (18), qui est reliée à la masse, revient au culot (12) à partir de la seconde extrémité, éloignée du culot, de l'ampoule de la lampe,
    caractérisée par le fait que le culot (12) est constitué de deux parties, à savoir une douille de fixation en forme de bouton (13) en métal et qui retient le pincement étanche proche du culot, et une bague cylindrique de réglage (15) en matière plastique, la bague de fixation (13) étant disposée dans un logement (14) d'un cylindre creux (32) formé sur la bague de réglage (15), tandis que du côté situé à l'opposé du logement (14), est formée, sur la bague de réglage, une aile pleine (32), dans laquelle les deux éléments de contact (16,17) sont disposés dans deux trous borgnes (33,34).
  2. Lampe à décharge haute pression suivant la revendication 1, caractérisée par le fait que l'ampoule de la lampe est une ampoule extérieure cylindrique (2) comportant deux extrémités (8,9), et qui entourent une enceinte de décharge (3), au moins la première extrémité (8) proche du culot étant fermée à l'aide d'un pincement étanche (27), tandis que l'ampoule extérieure (2) est orientée suivant l'axe de l'enceinte de décharge (3).
  3. Lampe à décharge haute pression suivant la revendication 1, caractérisée par le fait que les deux éléments de contact (16;17) sont réalisés chacun sous la forme d'un cylindre métallique creux (35;38) comportant une partie de fond (36;39).
  4. Lampe à décharge haute pression suivant la revendication 1 ou 2, caractérisée par le fait que la douille de fixation (13) possède une partie de fond circulaire (22) et un bord cylindrique périphérique (26).
  5. Lampe à décharge haute pression suivant la revendication 4, caractérisée par le fait que le bord (24) de la douille de fixation (13) comporte des perçages, qui sont remplis par une masse de matière plastique à partir du cylindre creux (31) sur la base d'un processus de soudage HF.
  6. Lampe à décharge haute pression suivant la revendication 4, caractérisée par le fait que le pincement étanche (27), proche du culot, de l'ampoule de la lampe, c'est-à-dire de l'enceinte de décharge ou de l'ampoule extérieure, comporte, sur ses grands côtés, des tétons saillants (30), et que la partie de fond (25) de la douille de fixation (13) est pourvue d'une fente longitudinale (28), qui est adaptée à la section transversale du pincement étanche proche du culot, ainsi que de crochets élastiques (29), les crochets élastiques (29) s'encliquetant respectivement derrière les tétons (30) du pincement étanche (27) inséré dans la fente longitudinale (28).
  7. Lampe à décharge haute pression suivant la revendication 3, caractérisée par le fait que le diamètre extérieur du premier cylindre (35) est adapté au diamètre intérieur du premier trou borgne (33), la hauteur du cylindre creux (35) correspondant au maximum à la profondeur du trou borgne (33), et la partie de fond (36) s'appliquant contre le fond du trou borgne (33).
  8. Lampe à décharge haute pression suivant la revendication 3, caractérisée par le fait qu'une partie saillante tubulaire (37) est formée sur la bague de réglage (15), au milieu du second trou borgne (34), et que le diamètre intérieur du second cylindre creux (38) est adapté au diamètre extérieur de la partie saillante tubulaire (37), la seconde partie de fond (39) s'appliquant contre l'extrémité de la partie saillante (37), et que la hauteur de la partie saillante (37) et du cylindre creux (38) du second élément de contact correspond au maximum à la profondeur du second trou borgne (34).
  9. Lampe à décharge haute pression suivant la revendication 1 ou 2, caractérisée par le fait que la seconde entrée de courant (18), retourne à la bague de réglage (15) à partir de l'extrémité, éloignée du culot, de l'enceinte de décharge ou de l'ampoule extérieure, et y est logé dans un perçage (40) qui s'étend jusqu'à la partie saillante tubulaire (37).
  10. Lampe à décharge haute pression suivant la revendication 1 ou 2, caractérisée par le fait que la seconde entrée de courant (18) est composée de deux pièces, à savoir une partie de scellement par fusion (19), qui traverse l'extrémité (9), éloignée du culot, de l'enceinte de décharge ou de l'ampoule extérieure, et une pièce de renvoi (20), qui relie la pièce de scellement par fusion (19) au second élément de contact situé dans le culot (12).
  11. Lampe à décharge haute pression suivant la revendication 1, caractérisée par le fait que la seconde entrée de courant (18) est entourée au moins sur une partie de sa longueur d'un tube capillaire (24), qui s'étend jusque dans le perçage (40) de la bague de réglage (4).
  12. Lampe à décharge haute pression suivant la revendication 7 ou 8, caractérisée par le fait que la hauteur des deux cylindres creux (35,38) représente à 50 à 75 % de la profondeur des trous borgnes (33,34).
EP88121023A 1987-12-22 1988-12-15 Lampe à d'echarge à haute pression Expired - Lifetime EP0321866B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3743612 1987-12-22
DE19873743612 DE3743612A1 (de) 1987-12-22 1987-12-22 Hochdruckentladungslampe

Publications (3)

Publication Number Publication Date
EP0321866A2 EP0321866A2 (fr) 1989-06-28
EP0321866A3 EP0321866A3 (en) 1990-12-27
EP0321866B1 true EP0321866B1 (fr) 1995-07-19

Family

ID=6343310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121023A Expired - Lifetime EP0321866B1 (fr) 1987-12-22 1988-12-15 Lampe à d'echarge à haute pression

Country Status (2)

Country Link
EP (1) EP0321866B1 (fr)
DE (2) DE3743612A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0793050B2 (ja) * 1989-12-12 1995-10-09 株式会社小糸製作所 放電ランプ装置
JP2592005B2 (ja) * 1990-05-18 1997-03-19 株式会社小糸製作所 車輌用前照灯
JP2587716B2 (ja) * 1990-09-25 1997-03-05 株式会社小糸製作所 車輌用放電灯の点灯回路
US5216319A (en) * 1990-09-26 1993-06-01 U.S. Philips Corporation Capped high-pressure discharge lamp
KR100302532B1 (ko) * 1992-05-11 2001-11-22 요트.게.아. 롤페즈 캡형전기램프
EP0579326B1 (fr) * 1992-07-13 1996-03-20 Koninklijke Philips Electronics N.V. Lampe électrique munie d'un culot
DE4404458A1 (de) * 1993-02-16 1994-08-25 Koito Mfg Co Ltd Isoliersockel für Entladungslampenvorrichtung
DE69511987T2 (de) * 1994-05-19 2000-03-16 Koninklijke Philips Electronics N.V. Gesockelte hochdruckentladungslampe
DE4427593A1 (de) * 1994-08-04 1996-02-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Einseitig gesockelte Hochdruckentladungslampe
DE19624243A1 (de) * 1996-06-18 1998-01-02 Bosch Gmbh Robert Entladungslampe
US6203169B1 (en) * 1999-06-25 2001-03-20 Osram Sylvania Inc. Lamp and method of producing same
DE10121608A1 (de) * 2001-05-04 2002-11-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Lampe
DE10143714C1 (de) * 2001-08-30 2002-12-19 Siemens Ag Lampe mit einem Lampenkörper und außen an diesem entlang geführter Leitungszuführung sowie Verfahren zu deren Herstellung
DE102005007659A1 (de) * 2005-02-19 2006-08-24 Hella Kgaa Hueck & Co. Brenner für eine Gasentladungslampe und Verfahren zur Herstellung des Brenners
DE102005054859A1 (de) * 2005-11-15 2007-05-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe
EP2009668B1 (fr) * 2007-06-29 2010-01-20 Flowil International Lighting (HOLDING) B.V. Lampe à décharge avec culot unique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE320531C (de) * 1917-05-26 1920-04-26 Max Seddig Dr Sockel fuer Verstaerkerroehren, Senderoehren u. dgl.
FR572903A (fr) * 1923-01-23 1924-06-16 Perfectionnement à la construction des lampes à plusieurs électrodes
GB1305065A (fr) * 1969-05-20 1973-01-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
DE2836596A1 (de) * 1978-08-21 1980-03-13 Patra Patent Treuhand Elektrische lampe
DE3236462A1 (de) * 1982-10-01 1984-04-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe mit sockel und zugehoeriger fassung
EP0152649A1 (fr) * 1984-01-09 1985-08-28 Koninklijke Philips Electronics N.V. Lampe électrique à culot en matériau synthétique
US4641056A (en) * 1984-10-12 1987-02-03 U.S. Philips Corporation Plastic-based automotive headlamp
NL8600226A (nl) * 1985-11-19 1987-06-16 Philips Nv Gesokkelde voertuig-koplamp.

Also Published As

Publication number Publication date
DE3854187D1 (de) 1995-08-24
EP0321866A3 (en) 1990-12-27
DE3743612A1 (de) 1989-07-06
EP0321866A2 (fr) 1989-06-28

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