EP0209094B1 - Lampe à décharge à haute pression à vapeur métallique - Google Patents

Lampe à décharge à haute pression à vapeur métallique Download PDF

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Publication number
EP0209094B1
EP0209094B1 EP19860109536 EP86109536A EP0209094B1 EP 0209094 B1 EP0209094 B1 EP 0209094B1 EP 19860109536 EP19860109536 EP 19860109536 EP 86109536 A EP86109536 A EP 86109536A EP 0209094 B1 EP0209094 B1 EP 0209094B1
Authority
EP
European Patent Office
Prior art keywords
discharge vessel
heat accumulation
sleeve
pressure metal
discharge lamp
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
EP19860109536
Other languages
German (de)
English (en)
Other versions
EP0209094A3 (en
EP0209094A2 (fr
Inventor
Jürgen Dr. Heider
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 EP0209094A2 publication Critical patent/EP0209094A2/fr
Publication of EP0209094A3 publication Critical patent/EP0209094A3/de
Application granted granted Critical
Publication of EP0209094B1 publication Critical patent/EP0209094B1/fr
Anticipated expiration legal-status Critical
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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
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H01J61/523—Heating or cooling particular parts of the lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/045—Thermic screens or reflectors

Definitions

  • the invention relates to a high-pressure metal vapor discharge lamp according to the preamble of claim 1.
  • heat exchange plates to improve the color temperature is particularly necessary for lamps of low power, since the inherent heat developed here is often no longer sufficient to achieve the required high vapor pressure of the amalgam inside the discharge vessel.
  • the advantages of such heat exchange plates have long been known to the person skilled in the lamp construction sector. From DE-OS 29 28 067 a heat exchange plate surrounding the discharge space with a certain distance is known, about the fastening of which no information is given.
  • the heat exchange plate in DE-PS 29 35 980 surrounds the electrode space closely and is clamped by means of two tabs bent over to the front of the discharge vessel.
  • heat exchange shields in the form of closely surrounding metal sleeves are known, one end of which comprises the cover plate and the other end of which comprises the discharge vessel.
  • EP-PA 83 201 801.4 describes a heat exchange plate which is cylindrical and surrounds the discharge space and is fastened to the holding wire in an electrically insulated manner by means of a glass bead and two connecting rods. With all known types of attachment of the heat exchange plate are either high expenses in terms of material and / or time required, or positioning by clamping is not ensured. In the former case, there are increased production costs, while when the heat exchange plate is fastened, vibrations of the lamp lead to changes in the operating voltage and thus to operating parameters which deviate from the target values.
  • the object of the invention is to make the attachment of the heat exchange shield simpler and safer, on the one hand to be able to keep the operating values of the lamps within narrow tolerances and on the other hand to enable a reduction in the manufacturing costs.
  • heat exchange shields are also fixed by means of the glass solder used for sealing the ends of the discharge vessel.
  • the respective heat exchange shield surrounds the end of the discharge vessel in the form of a cuff, the fixation taking place in the region of an edge of the cuff and the liquid glass solder in those formed by the cuff and the discharge vessel Gap defined flows.
  • tabs angled toward the longitudinal axis of the discharge vessel are provided, which abut the end face of the tubular discharge vessel.
  • the sleeve causes the melting to heat up more quickly and evenly, since the ceramic tube is surrounded by the sleeve and this is made of the same material (niobium) as the power supply.
  • the sleeve lies against the tubular discharge vessel at least in the edge region provided for the fixation. In a preferred embodiment, the larger part of the sleeve facing the discharge space is at a certain distance from the discharge vessel.
  • the entire edge can be flanged or deep-drawn at right angles to the end face of the discharge vessel.
  • the edge of the heat accumulation collar can also be used Depressions in the form of indentations which lie on the end face of the discharge vessel.
  • the attachment is such that the heat accumulation sleeve is attached vibration-proof and potential-free to the respective ends of the discharge vessel.
  • the aluminum oxide discharge vessel 1 has a cylindrical tube 6, a bush-shaped stopper 7 is sintered into the ends thereof is.
  • the power supply 4 holding the electrode 5 is melted gas-tight by means of the glass solder ring 3.
  • the construction described so far is conventional and known to the person skilled in the art.
  • the cylindrical heat accumulation sleeve 2, which is made of niobium, is also placed on the end of the discharge vessel.
  • the heat accumulation sleeve 2 surrounds the tube 6 closely and is provided on its upper side with tabs 9 which rest on the end face 10 of the tube 6.
  • a part of the molten glass solder ring 3 flows through capillary forces into the gap formed by the tube 6 of the discharge vessel 1 and the heat accumulation collar 2, whereby the latter is held in position after the glass solder has cooled without additional operations or materials and enables a good heat exchange becomes.
  • FIG. 2 An alternative form of the heat accumulation sleeve 11 is shown in FIG. 2. All operations and also the shape of the discharge vessel 1 are identical to that of FIG. 1.
  • the heat accumulation sleeve 11 here consists of a short upper section 12 closely surrounding the discharge vessel 1, on which the tabs 9 'are formed, and of a longer one, the discharge vessel 1 with a certain distance surrounding lower section 13.
  • the advantage of this embodiment is that the glass solder fills the entire upper edge area more uniformly and thus an even narrower tolerance range of the lamp parameters is maintained in the lamps produced.
  • the conical heat accumulation collar works in a similar way 14 of FIG. 3.
  • the discharge vessel 15 here has an upper cylindrical region of small diameter 16 and a region of larger diameter 17 through which the discharge flows, which are connected by a conical part 18, the electrode space.
  • the conical heat accumulation collar 14 rests with its tabs 9 ′′ on the end face 19 of the discharge vessel 15 and surrounds the electrode space 18 at a certain distance after the melting and thus the fastening thereof has been carried out by means of the glass solder ring 3 ′.
  • FIG. 4 shows a stepped, cylindrical heat accumulation collar 20 with a conical widening 22 facing the discharge vessel 21, which covers the electrode space of the discharge vessel 21.
  • the holding takes place during the melting process by means of the tabs 9 '' '.
  • the short upper section 23 of the heat accumulation collar 20 with a smaller diameter closely surrounds the upper end of the discharge vessel 21 and is fused here with the finished lamp, while the central, cylindrical section 24 is at a certain distance from the discharge vessel 21.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Claims (6)

  1. Lampe à décharge haute pression à vapeur métallique comprenant
    - une enceinte tubulaire de décharge (1,17,21) formée d'une céramique transparente,
    - qui est fermée d'une manière étanche au vide à ses deux extrémités, et
    - qui contient, en son intérieur, des électrodes (5) ainsi que les métaux, composés métalliques ou alliages métalliques, prévus en tant que remplissage, et un ou plusieurs gaz rares,
    - des éléments d'alimentation en courant (4) pour les électrodes (5) traversant les extrémités fermées de façon étanche au vide, et
    - de la soudure de verre (3,3') étant utilisée comme élément d'étanchéité,
    - ainsi que des boucliers métalliques (2,11,14,20) de protection contre l'accumulation de chaleur, qui sont disposés extérieurement sur les extrémités de l'enceinte de décharge (1,17,21), qui absorbent le rayonnement thermique produit dans la zone des logements des électrodes et qui l'évacuent aux emplacements les plus froids de l'enceinte de décharge (1,17,21),
    - les boucliers (2,11,14,20) de protection contre l'accumulation de chaleur étant fixés au moyen d'une soudure de verre (3,3') sur l'enceinte de décharge (1,17,21),
    caractérisée en ce que la fixation des boucliers (11,14,20) de protection contre l'accumulation de chaleur est également réalisée au moyen de la soudure de verre (3,3') utilisée pour étanchéifier les extrémités de l'enceinte de décharge (1,17,21).
  2. Lampe à décharge haute pression à vapeur métallique suivant la revendication 1, caractérisée par le fait que le bouclier respectif (2,11,14,20) de protection contre l'accumulation de chaleur entoure l'extrémité de l'enceinte de décharge sous la forme d'un manchon, la fixation étant réalisée au voisinage d'un bord du manchon.
  3. Lampe à décharge haute pression à vapeur métallique suivant la revendication 2, caractérisée par le f fait que le bord, prévu pour la fixation, du bouclier (2,11,14,20) de protection contre l'accumulation de chaleur, en forme de manchon, comporte des moyens (9,9',9",9"'), qui s'appliquent sur la face frontale (10,19) de l'enceinte tubulaire de décharge (1,17,21) et supportent le bouclier (2,11,14,20) de protection contre l'accumulation de chaleur sur l'enceinte.
  4. Lampe à décharge haute pression à vapeur métallique suivant la revendication 3, caractérisée par le fait que le bord, prévu pour la fixation, du bouclier (2,11,14,20) de protection contre l'accumulation de chaleur, en forme de manchon, comporte des pattes (9,9',9",9"') qui sont repliées en direction de l'axe longitudinal de l'enceinte de décharge (1,17,21) et que ces pattes (9,9',9",9"') s'appliquent sur la face frontale (10,19) de la paroi de l'enceinte tubulaire de décharge (1,17,21).
  5. Lampe à décharge haute pression à vapeur métallique suivant les revendications 3 et 4, caractérisée par le fait que le bouclier (2,11,14,20) de protection contre l'accumulation de chaleur, en forme de manchon, s'applique, dans la zone marginale prévue pour la fixation, contre l'enceinte tubulaire de décharge (1,17,21), et que l'autre partie du bouclier (2,11,14,20) de protection contre l'accumulation de chaleur est située à une certaine distance de l'enceinte de décharge (1,17,21).
  6. Lampe à décharge haute pression à vapeur métallique suivant les revendications 3 et 4, caractérisée par le fait que le bouclier (2,11,14,20) de protection contre l'accumulation de chaleur, en forme de manchon, s'applique sur toute sa longueur contre l'enceinte tubulaire de décharge (1,17,21).
EP19860109536 1985-07-19 1986-07-11 Lampe à décharge à haute pression à vapeur métallique Expired - Lifetime EP0209094B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853525886 DE3525886A1 (de) 1985-07-19 1985-07-19 Metalldampfhochdruckentladungslampe
DE3525886 1985-07-19

Publications (3)

Publication Number Publication Date
EP0209094A2 EP0209094A2 (fr) 1987-01-21
EP0209094A3 EP0209094A3 (en) 1989-05-24
EP0209094B1 true EP0209094B1 (fr) 1992-10-14

Family

ID=6276244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860109536 Expired - Lifetime EP0209094B1 (fr) 1985-07-19 1986-07-11 Lampe à décharge à haute pression à vapeur métallique

Country Status (4)

Country Link
EP (1) EP0209094B1 (fr)
JP (1) JPS6226758A (fr)
DE (2) DE3525886A1 (fr)
HU (1) HU196675B (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1280735A (en) * 1969-08-29 1972-07-05 Matsushita Electronics Corp High pressure metal-vapour discharge tube
MX144086A (es) * 1975-12-15 1981-08-26 Gen Electric Mejoras en una lampara de descarga de alta presion de vapor metalico
US4230964A (en) * 1978-07-11 1980-10-28 Westinghouse Electric Corp. Color high-pressure sodium vapor lamp
US4464603A (en) * 1982-07-26 1984-08-07 General Electric Company Ceramic seal for high pressure sodium vapor lamps

Also Published As

Publication number Publication date
DE3525886A1 (de) 1987-01-29
EP0209094A3 (en) 1989-05-24
HUT41159A (en) 1987-03-30
DE3686962D1 (de) 1992-11-19
JPS6226758A (ja) 1987-02-04
EP0209094A2 (fr) 1987-01-21
HU196675B (en) 1988-12-28

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