EP0110054B1 - Lampe à décharge à haute pression avec culot et douille correspondante - Google Patents

Lampe à décharge à haute pression avec culot et douille correspondante Download PDF

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Publication number
EP0110054B1
EP0110054B1 EP83109808A EP83109808A EP0110054B1 EP 0110054 B1 EP0110054 B1 EP 0110054B1 EP 83109808 A EP83109808 A EP 83109808A EP 83109808 A EP83109808 A EP 83109808A EP 0110054 B1 EP0110054 B1 EP 0110054B1
Authority
EP
European Patent Office
Prior art keywords
base
pressure discharge
discharge lamp
socket
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
Application number
EP83109808A
Other languages
German (de)
English (en)
Other versions
EP0110054A1 (fr
Inventor
Werner Dr. Dipl.-Ing. Block
Wolfgang Greiler
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 EP0110054A1 publication Critical patent/EP0110054A1/fr
Application granted granted Critical
Publication of EP0110054B1 publication Critical patent/EP0110054B1/fr
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr

Definitions

  • the invention relates to a high-pressure discharge lamp with base and associated socket, the high-pressure discharge lamp having two electrodes arranged on the longitudinal axis and on opposite sides of the discharge vessel, each with an associated power supply and a fusing surrounding it, and wherein the base, which is only attached to one fusing, has two contact elements and wherein the power supply facing the base is connected directly to the first contact element and the power supply facing away from the base is connected to the second contact element via an electrical conductor.
  • a lamp is known from document DE-B-2 043179.
  • the lamps described here are preferably used in luminaires for film and video recordings as well as for stage lighting and for similar purposes. In addition, these lamps can also be used, for example, for projection purposes or for general lighting.
  • the lamps were provided with a base at each melting point.
  • the installation length is accordingly large, which is why the lamps had to be installed in the associated reflectors transversely to the longitudinal axis of the reflector.
  • the reflectors were provided with recesses on the side, so that the two lamp bases were each arranged outside the reflector. This arrangement is not only bulky, but also reduces the usable amount of light due to the cut out areas on the reflector.
  • a high voltage of up to 30 kV is required to re-ignite these lamps, which are still warm from operation. Given the short distance between the power supply lines, the base and socket contacts, this high voltage leads to flashovers and, under unfavorable circumstances, even to the destruction of the high-quality lighting parts.
  • DE-B 2 043 179 already discloses a high-pressure discharge lamp for stroboscopic measurements with melts on opposite electrodes that are assigned, the first melt of which is directly connected and the second melt of which is connected to a base via an electrical conductor.
  • the base a base of the type P 45 t which is commercially available for two-filament motor vehicle lamps, has a metallic sleeve, on the side of which facing away from the lamp there are three exposed contact pins.
  • the potting compound made of silicone rubber that surrounds the metallic sleeve and the first lamp end dissipates the heat developed by the stroboscopic lamp well, the metallic sleeve and the exposed contact pins are disadvantageous at the ignition voltage of 15 kV required here.
  • the object of the invention is to provide a compact high-pressure discharge lamp with base and associated socket part, which is also suitable for hot ignition, and which is suitable for installation in reflectors.
  • the amount of light emitted by the lamp should not be reduced by reflector cutouts.
  • the high-pressure discharge lamp with base and associated socket with the features mentioned in the preamble of the main claim is characterized in that the base consists of a high-voltage insulating material and that the contact elements are at least partially surrounded by a collar made of a high-voltage insulating material at a certain distance, and that the socket belonging to the base also consists of a high-voltage insulating material and has two connection elements, the first ends of which are provided for the non-positive reception of the contact elements of the base and the second ends of which have a connection option for a supply voltage, the connection elements being connected by one of their first ends to Are separated beyond the second ends projecting web, on each of which a collar at least partially at a certain distance and a cavity surrounding a collar of high-voltage insulation material is molded on.
  • the lamp is advantageously a metal halide lamp operated with alternating current without Outer bulb, which due to its compact design and the one-sided base is particularly suitable for small, handy film and video recording lights as well as reportage lights.
  • both the base and the socket can be siliconized or glazed.
  • a high-pressure lamp without halogen additives or an inert gas lamp can also be used.
  • the contact elements are designed as pins and the connection elements as sockets and fastened at a distance D from one another to the associated molded body of the base or the socket.
  • the distance D measured in millimeters corresponds at most to 0.8 times the maximum ignition voltage to be applied, measured in kilovolts, of a warm lamp.
  • the pins are surrounded by cavities forming cavities at a certain distance over at least their entire length.
  • the collar surrounding the high-voltage contact element advantageously surrounds it over the entire circumference. This provides adequate insulation of the contact elements from one another, which is required against a flashover of the high voltage during the hot ignition of the lamp. To ensure correct lamp polarity, the collars also have a different cross-section.
  • the power supply of the lamp facing away from the base is advantageous over a flat, preformed, rigid metal band - e.g. B. made of nickel-plated copper - connected to the second contact element of the base, the narrow end of which faces to reduce the heat absorption of the lamp.
  • the large surface of the metal strip radiates a large part of the heat generated.
  • the melting of the lamp fastened to the base is fastened in an opening arranged centrally in the shaped body and / or surrounded by a collar which extends at a certain distance at least in the direction of the metal strip.
  • the total length L resulting from the depth of the opening and the height of the collar is at least as great as the distance D. It is sufficient if this collar only surrounds the relevant melt approximately in a semi-circle to the opposite pole.
  • the connecting elements designed as sockets are also fastened to the socket at a distance D from one another and receive the contact elements in a force-fitting manner.
  • the plug connection between the pins of the base and the sockets of the socket can expediently be provided with a pull-off protection.
  • the width B of the web is preferably at least 1.0 D. A high-voltage flashover in the area of the lower frame is reliably avoided by these measures.
  • the sockets themselves are also surrounded by collars molded onto the web, which extend at least over 180 ° in the direction of the opposite pole and extend at a certain distance from these.
  • the connecting element carrying the high voltage is again advantageously surrounded by the collar over its entire circumference.
  • a collar which does not completely surround this is sufficient for the connecting element carrying the operating voltage.
  • the collars surrounding the connection elements of the socket have at least partially different cross-sectional shapes.
  • the cross-sectional shape of corresponding contact and connection elements on the base and on the socket is matched to one another.
  • the socket is also provided with elements for fastening in a lamp. Due to the high thermal load, both the base and the socket are made of a heat-resistant and high-voltage insulating material, such as. B. ceramic, made in one piece.
  • a metal halide lamp 1 with a base on one side is shown in FIGS. 1 to 3.
  • the two electrodes 2 and 3 are arranged on opposite sides of the discharge vessel 4, each electrode 2 and 3, respectively, having a melt 7 and 8 surrounding the associated power supply lines 5 and 6.
  • the meltdown 7 is fastened to a base 11 having two contact pins 9 and 10.
  • the power supply 5 facing the base 11 is directly electrically connected to the contact pin 9, while the electrical connection of the power supply 6 facing away from the base 11 to the contact pin 10 takes place via a flat, preformed, rigid, nickel-plated copper strip 12, the narrow side of which faces the lamp 1 is.
  • the distance between the discharge vessel 4 of the lamp 1 and the nickel-plated copper strip 12 is approximately 5 mm.
  • the metal halide lamp 1 is operated at 220 V / 50 Hz and in the present example has a power consumption of 250 W at a lamp voltage of 45 V.
  • a voltage of 20 kV to a maximum of 30 kV is required for the ignition, in particular for the re-ignition of the warm lamp.
  • This high voltage is applied to the lamp 1 via the contact pin 9.
  • Corresponding high-voltage insulation mainly of the high-voltage components is required for this.
  • the two contact pins 9 and 10 are therefore arranged at a distance D of 19 mm from one another and are completely surrounded over a little more than their length by a collar 15 and 16 forming a cylindrical cavity 13 and 14.
  • the position of a reflector R to the metal halide lamp 1 - z. B. in a film or video recording light - is indicated by dashed lines in Figure 3.
  • the collar 15 surrounding the high-voltage contact pin 9 is cylindrical on its outer surface, whereas the outer surface of the collar 16 has a flat surface on the inner side facing the opposite pole.
  • the melt 7 attached to the base 11 is surrounded at a certain distance in the direction of the copper strip 12 by an approximately semicircular collar 17.
  • the height of the semicircular collar 17 is 10 mm.
  • the melting 7 is additionally arranged in a round opening 18 in the central part of the base body.
  • the total length L 1 resulting from the height of the collar 17 and the depth of the opening 18 is approximately 23 mm.
  • the base body is further provided with corresponding openings 19 and 20.
  • the mechanical and electrical connection of all metal parts - the contact pin 9 with the power supply 5 on the one hand and the power supply 6 with the nickel-plated copper strip 12 and the contact pin 10 on the other - is expediently carried out by brazing or spot welding in order to achieve sufficient heat resistance during lamp operation.
  • the assembly preassembled in this way is inserted into the base body.
  • the remaining cavities of the openings 18, 19 and 20 are then filled with a heat-resistant and high-voltage insulating putty (not shown), which then hardens to the base 11 after the lamp has been adjusted.
  • the socket 21 suitable for the metal halide lamp 1 with a base on one side is shown in more detail in FIG. 3 and the corresponding socket body in FIGS. 7 to 10.
  • the socket body is made in one piece from ceramic.
  • the two corresponding contact pins 9 and 10 of the base 11 and arranged at a distance D of 19 mm to each other are separated for insulation from each other by a web 24, which extends beyond the connection elements on the underside by a length L 2 of 13 mm .
  • the protruding length L 2 of this web 24 should be at least 0.5 times the distance D.
  • connection sockets 22 and 23 To further isolate the connection sockets 22 and 23 from the high voltage, at least the connection socket 22 carrying the high voltage is completely surrounded by a collar 25 over its entire length at a certain distance.
  • the corresponding counter bushing 23 has only one collar 26 which is open to the outside.
  • a cavity 27 and 28 is provided between the connection sockets 22 and 23 and the associated collar 25 and 26.
  • the collars 25 and 26 are designed differently to ensure correct lamp polarity and the shape of the corresponding collars 15 and 16 of the base body is adapted: the collar 25 has a round shape, whereas the collar 26 on the opposite side has the flat surface of the web 24.
  • connection sockets 22 and 23 are provided on the underside with a threaded attachment, to which the supply lines 31 and 32 are connected by means of a nut 29 and 30, respectively.
  • the high-voltage connection socket 22 is fastened directly to the socket body, while the connection socket 23 is screwed to the latter via a contact plate 33.
  • This contact plate 33 has a trapezoidal shape, the longest side of which faces the open side of the collar 26. Through the open collar 26 good cooling of the contact plate 33 - z. B. by a fan installed in the device housing (not shown) - guaranteed.
  • other types of attachment of the sockets 22 and 23 in the socket body are also possible.
  • the openings 34, 35 and 36 in the socket body are provided for fastening the connection sockets 22 and 23.
  • the base body 21 is provided with cutouts 39, 40 and 41.
  • the socket body 21 - z. B. in a film or video recording lamp - this also has two mounting slots 42 and 43 each receiving a mounting screw (not shown).

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Connecting Device With Holders (AREA)

Claims (13)

1. Lampe à décharge à haute pression (1) comprenant un culot (11) et une douille correspondante (21), cette lampe à décharge à haute pression (1) présentant deux électrodes (2, 3) disposées selon l'axe longitudinal sur des côtés opposés du compartiment de décharge (4) et pourvues à chaque fois d'une alimentation associée en courant (5, 6), ainsi qu'un scellement (7, 8) qui entoure cette alimentation, le culot (11), fixé seulement à un scellement (7), comportant deux éléments de contact (9, 10), l'alimentation en courant (5) tournée vers le culot (11) étant directement raccordée au premier élément de contact (9) et l'alimentation en courant (6) tournée à l'opposé du culot (11) étant raccordée au second élément de contact (10) par l'intermédiaire d'un conducteur électrique (12), caractérisée par le fait que le culot (11) consiste en un matériau isolant de la haute tension : par le fait que les éléments de contact (9, 10) sont entourés au moins partiellement, à une distance déterminée, par un collet (15, 16) en un matériau isolant de la haute tension ; et par le fait que la douille (21) faisant partie du culot (11) consiste également en un matériau isolant de la haute tension et présente deux éléments de raccordement (22, 23), dont les premières extrémités sont prévues pour recevoir mécaniquement les éléments de contact (9, 10) du culot (11) et dont les secondes extrémités offrent une possibilité de raccordement (29, 30) pour une tension d'alimentation, les éléments de raccordement (22, 23) étant séparés par une membrure (24) qui part de leurs premières extrémités et dépasse au-delà de leurs secondes extrémités, et sur laquelle est moulé solidairement un collet respectif (25, 26) en un matériau isolant de la haute tension, qui entoure au moins partiellement les éléments de raccordement à une distance déterminée, en formant une cavité (27, 28).
2. Lampe à décharge à haute pression selon la revendication 1, caractérisée par le fait que les éléments de contact sont réalisés sous la forme de fiches (9, 10) et les éléments de raccordement sont conçus en tant que douilles (22, 23) et sont fixés, à une distance mutuelle D, à un corps moulé correspondant du culot (11) ou de la douille (21), respectivement, la distance D mesurée en millimètres correspondant, au maximum, à 0,8 fois la valeur de la tension d'amorçage applicable au maximum, mesurée en kilovolts, d'une lampe chaude en service.
3. Lampe à décharge à haute pression (1) selon la revendication 1 ou 2, caractérisée par le fait que les éléments de contact (9, 10) du culot (11) sont intégralement entourés par les collets (15, 16) sur au moins toute leur longueur, en formant des cavités (13, 14).
4. Lampe à décharge à haute pression (1) selon l'une des revendications 1 à 3, caractérisée par le fait que, pour assurer une polarisation correcte de cette lampe, les collets (15, 16) possèdent une section différente.
5. Lampe à décharge à haute pression (1) selon l'une des revendications 2 à 4, caractérisée par le fait que le scellement (7) de cette lampe (1) fixé au culot (11) est fixé dans une ouverture (18) pratiquée centralement dans le corps moulé du culot, et /ou est entouré par un collet (17) s'étendant au moins en direction du conducteur électrique (12).
6. Lampe à décharge à haute pression (1) selon la revendication 5, caractérisée par le fait que la longueur totale Ll, résultant de la profondeur de l'ouverture (18) et de la hauteur du collet (17), est au moins aussi grande que la distande D.
7. Lampe à décharge à haute pression (1) selon l'une des revendications 1 à 6, caractérisée par le fait que le conducteur électrique (12), entre l'alimentation en courant (6) tournée à l'opposé du culot (11) et le second élément de contact (10), est une bande métallique rigide, aplatie et préformée.
8. Lampe à décharge à haute pression (1) selon l'une des revendications 2 à 7, caractérisée par le fait que la longueur L2 de la membrure (24) saillant des secondes extrémités des éléments de raccordement (22, 23) mesure au moins 0,5 D.
9. Lampe à décharge à haute pression (1) selon l'une des revendications 2 à 8, caractérisée par le fait que la largeur B de la membrure mesure au moins 1,0 D.
10. Lampe à décharge à haute pression (1) selon l'une des revendications 1 à 9, caractérisée par le fait que, pour assurer une polarisation correcte de cette lampe, les collets (25, 26) entourant les éléments de raccordement (22, 23) de la douille (21) présentent des sections différentes, les collets (15, 16) du culot (11) et les collets (25, 26) de la douille (21) d'éléments de contact et de raccordement correspondants (9 avec 22 et 10 avec 23) ayant des configurations de section mutuellement adaptées.
11. Lampe à décharge à haute pression (1) selon l'une des revendications 1 à 10, caractérisée par le fait que la douille (21) est munie d'éléments de fixation (42, 43).
12. Lampe à décharge à haute pression (1) selon l'une des revendications 2 à 11, caractérisée par le fait que les corps moulés du culot (11) et de la douille (21) constituent à chaque fois une pièce monobloc, et consistent en de la céramique.
13. Lampe à décharge à haute pression selon l'une des revendications 1 à 12, caractérisée par le fait que cette lampe (1) est une lampe à halogène à vapeur métallique, pouvant fonctionner sous tension alternative.
EP83109808A 1982-10-01 1983-09-30 Lampe à décharge à haute pression avec culot et douille correspondante Expired EP0110054B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3236462 1982-10-01
DE19823236462 DE3236462A1 (de) 1982-10-01 1982-10-01 Hochdruckentladungslampe mit sockel und zugehoeriger fassung

Publications (2)

Publication Number Publication Date
EP0110054A1 EP0110054A1 (fr) 1984-06-13
EP0110054B1 true EP0110054B1 (fr) 1986-12-03

Family

ID=6174725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109808A Expired EP0110054B1 (fr) 1982-10-01 1983-09-30 Lampe à décharge à haute pression avec culot et douille correspondante

Country Status (4)

Country Link
US (1) US4533851A (fr)
EP (1) EP0110054B1 (fr)
JP (1) JPS5966048A (fr)
DE (2) DE3236462A1 (fr)

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DE4128928A1 (de) * 1990-08-31 1992-03-19 Koito Mfg Co Ltd Verbindungseinheit fuer entladungslampe

Also Published As

Publication number Publication date
US4533851A (en) 1985-08-06
DE3368150D1 (en) 1987-01-15
JPS5966048A (ja) 1984-04-14
EP0110054A1 (fr) 1984-06-13
JPH0425657B2 (fr) 1992-05-01
DE3236462A1 (de) 1984-04-05

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