EP1772896A2 - Lampe - Google Patents

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Publication number
EP1772896A2
EP1772896A2 EP06121828A EP06121828A EP1772896A2 EP 1772896 A2 EP1772896 A2 EP 1772896A2 EP 06121828 A EP06121828 A EP 06121828A EP 06121828 A EP06121828 A EP 06121828A EP 1772896 A2 EP1772896 A2 EP 1772896A2
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
power supply
supply section
lamp
potting compound
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.)
Granted
Application number
EP06121828A
Other languages
German (de)
English (en)
Other versions
EP1772896B1 (fr
EP1772896A3 (fr
Inventor
Peter Helbig
Uwe Kantim
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 EP1772896A2 publication Critical patent/EP1772896A2/fr
Publication of EP1772896A3 publication Critical patent/EP1772896A3/fr
Application granted granted Critical
Publication of EP1772896B1 publication Critical patent/EP1772896B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • 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
    • H01J5/62—Connection of wires protruding from the vessel to connectors carried by the separate part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap

Definitions

  • the invention relates to a lamp according to the preamble of patent claim 1.
  • Such lamps are for example from the EP-A 1 006 551 known.
  • This publication discloses a halogen incandescent lamp for a motor vehicle headlamp with an enclosed by a glass lamp vessel incandescent and two power supply wires for the filament, which protrude from the sealed end of the lamp vessel.
  • the sealed end of the lamp vessel is fixed in a lamp base provided with two electrical terminals for the lamp.
  • the power supply wires are each connected to one of the electrical terminals of the lamp by welding.
  • the lamp according to the invention comprises at least one lamp enclosed by a lamp vessel and at least one first power supply section for supplying energy to the at least one lamp and a lamp base, which is equipped with at least one second power supply section for supplying power to the at least one lamp, wherein an electrically conductive potting compound or an electrically conductive adhesive or an electrically conductive solder is provided, by means of which or an electrically conductive connection between the at least one first power supply section and the at least one second power supply section is produced.
  • the lamp base of the lamp according to the invention preferably has at least one container into which the at least one first power supply section and the at least one second power supply section project, wherein the container is at least as far filled with the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder in that the at least one first power supply section and the at least one second power supply section are wetted by the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder.
  • the at least one container a defined space within the lamp cap is provided with a predetermined volume for the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder.
  • the at least one container To produce the electrical contact between the at least one first power supply section and the at least one second power supply section, it is sufficient for the at least one container to be so far connected to the electrically conductive potting compound or the electrically conductive potting compound To fill adhesive or the electrically conductive solder that the at least one first power supply section and the at least one second power supply section of the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder are wetted.
  • the electrical contact between the at least one first power supply section and the at least one second power supply section is thereby directly via the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder and / or, if the at least one container has metallic walls over the made of metallic walls.
  • the at least one first power supply section and the at least one second power supply section are arranged without contact with each other in order to provide sufficient clearance for the at least one first power supply section during the above-mentioned adjustment of the at least one light source.
  • the distance between the first and second current supply sections is as small as possible.
  • the surfaces of the first and / or second power supply sections may be partially or completely coated with a high-conductivity metal.
  • the first and / or second power supply sections may be partially silver plated, gold plated, copper plated, chrome plated or nickel plated.
  • the at least one first power supply section may have a cup-like end into which projects the at least one second power supply section and with the electrically conductive potting compound or electrically conductive adhesive or the electrically conductive solder is at least partially filled.
  • the at least one second power supply section may have a cup-like end into which the at least one first power supply section protrudes and which is at least partially filled with the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder.
  • the at least one first power supply section may have a hole or a cut into which the at least one second power supply section protrudes and which is at least partially covered with the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder, to keep the current density in the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder low.
  • the at least one second power supply section may have a hole or a cutout into which the at least one first power supply section protrudes, and that with the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder is at least partially covered.
  • the at least one first power supply section and the at least one second power supply section do not necessarily have to be arranged without contact. In order to keep the contact resistance between them as small as possible, they can also touch.
  • the first or second current supply section projecting into the cup-like end or into the hole or the cutout can touch the cup wall or the edge of the hole or the cutout.
  • the lamp base in the region of the at least one container is equipped with means which enable inductive heating of the electrically conductive potting compound arranged in the container or the electrically conductive adhesive or the electrically conductive solder by means of electromagnetic fields.
  • the encapsulated in the lamp base electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder can be heated without contact to cure the electrically conductive potting compound or the electrically conductive adhesive or to melt the electrically conductive solder.
  • the side walls of the aforementioned container are formed by a metal sleeve.
  • an electrical current can be induced in the side walls around the electrically conductive potting compound or the electrically conductive adhesive arranged in the container or electrically to heat conductive solder inductively.
  • the side walls of the container may be made of plastic and formed integrally with a plastic base part.
  • a metal ring may be embedded in the side walls in order to inductively heat the electrically conductive potting compound arranged in the container or the electrically conductive adhesive or the electrically conductive solder.
  • On the metal ring can also be dispensed with, since due to their electrical conductivity in the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder itself a current for heating the potting compound or the adhesive or the solder can be induced.
  • connection between the at least one first power supply section and the at least one second power supply section and the electrically conductive potting compound or the electrically conductive adhesive or the electrically conductive solder is gas-tight to prevent the ingress of moisture into the lamp cap.
  • the second power supply portions of the lamp base have projecting ends formed as electrical terminals of the lamp.
  • the at least one first power supply section is preferably a power supply section protruding from the lamp vessel, in particular a power supply wire protruding from the lamp vessel.
  • first embodiment of the invention is a halogen incandescent lamp, which is intended for use as a light source in a motor vehicle headlight.
  • This lamp has a lamp envelope 1 made of quartz glass, which is sealed at one end by means of a Quetschfußes 10.
  • an incandescent filament 2 is arranged, the filament outlets 21, 22 in each case via a molybdenum foil 31 or 32 embedded in a gas-tight manner in the presser foot 10 with a protruding from the presser foot 10, molybdenum existing power supply wire 41 and 42 are connected.
  • the presser foot 10 of the lamp vessel 1 is fixed in a metallic holder part 51 of the lamp cap 5.
  • the metallic holder part 51 is anchored in a plastic part 52 of the lamp cap 5. From the plastic base part 52 protrude two metallic contact lugs 61, 62, which are formed as stamped sheet metal parts and are each electrically connected to one of the power supply wires 41 and 42, respectively.
  • the electrically conductive connection between the first power supply wire 41 and the first metallic contact lug 61 is produced by means of an electrically conductive potting compound 7, which is arranged in a first hollow cylindrical container 81.
  • the first metallic contact lug 61 protrudes through the bottom into the interior of the first container 81, while the first power supply wire 41 protrudes from above into the interior of the first container 81, so that the first power supply wire 41 and the first contact lug 61 at a distance of approx.
  • the electrically conductive potting compound 7 wets both the first contact lug 61 and the first power supply wire 41 and fills the gap between the first power supply wire 41 and the first contact lug 61.
  • the electrically conductive connection between the second power supply wire 42 and the second metal contact lug 62 is made by means of an electrically conductive potting compound 7, which is arranged in a second hollow cylindrical container 82.
  • the second metallic contact lug 62 projects through the bottom into the interior of the second Container 82, while the second power supply wire 42 protrudes from above into the interior of the second container 82, so that the second power supply wire 42 and the second contact lug 62 are arranged at a distance of about 1 millimeter in the second container 82.
  • the electrically conductive potting compound 7 wets both the second contact lug 62 and the second power supply wire 42 and fills the gap between the second power supply wire 42 and the second contact lug 62.
  • the walls of the two containers 81, 82 for the potting compound 7 are integrally formed with the plastic base part 52, for example as a plastic injection molded part.
  • the potting compounds 7 in the containers 81, 82 are arranged electrically isolated from each other.
  • FIG. 2 shows a cross section through the plastic base part 52 in the region of the connection between the power supply wires 41, 42 and the metallic contact lugs 61, 62 according to the second embodiment of the invention.
  • This second embodiment differs from the first embodiment of the invention described above only in that the side walls of the two containers for the potting compound 7 are each formed by a metal tube 81 'and 82', one end of which is injected into the plastic base part 52.
  • the first and second embodiments are the same.
  • FIG. 3 shows a cross section through the plastic base part 52 in the region of the connection between the power supply wires 41, 42 and the metallic contact lugs 61, 62 according to the third embodiment of the invention.
  • This third embodiment differs from the second embodiment only in that the contact lugs 61, 62 each have a cup-like end 611, 621, into which the power supply wires 41, 42 protrude.
  • the cup-like ends 611, 621 are filled with potting compound 7.
  • FIG. 4 shows a cross section through the plastic base part 52 in the region of the connection between the power supply wires 41, 42 and the metallic contact lugs 61, 62 according to the fourth embodiment of the invention.
  • This fourth embodiment differs from the second embodiment only in that the contact lugs 61, 62 each have a V-shaped cutout into which the power supply wires 41, 42 protrude.
  • the V-shaped cutouts are filled with potting compound 7.
  • the prefabricated first unit consisting of the sealed lamp vessel 1 arranged therein filament 2 and fixed on the pinch 10 holder member 51 with the prefabricated second unit consisting of the plastic base part 52, the contact lugs 61, 62 injected therein and the metal ring 53 injected therein, and the potting compound 7 arranged in the containers 81, 82 and 81 ', 82, so that the holder part 51 rests on the metal ring 53 and the power supply wires 41, 42 in the potting compound 7 in the respective container 81, 82 or 81 ', 82' dip.
  • the metal base portions 51, 53 are aligned with each other so that the filament 2 is aligned with a reference plane defined by the metal ring 53, and welded together, and the potting compound 7 is cured by heating or by UV irradiation or in another suitable manner.
  • the heating of the potting compound 7 can be effected either by heating the complete lamp in an oven or by only locally heating the potting compound inductively by means of electromagnetic fields.
  • electrically conductive potting compound 7 for example, epoxy resins filled with silver, for example Epo-Tek H37MP or E3082 or polyimide adhesive, for example P1011 / P1011S, are suitable.
  • the invention is not limited to the embodiments explained in more detail above.
  • the invention can also be applied to other lamp types, for example to discharge lamps or to incandescent lamps with a tempered glass lamp vessel sealed without molybdenum foil embedding.
  • the materials is merely to ensure that the material of the plastic base part 52 in the region of the containers 81, 82 and 81 ', 82' the temperatures during the curing of the electrically conductive potting compound or the adhesive 7 and the temperatures during melting of the electrically conductive Solder paste withstands.
  • Suitable materials for the plastic base part 52 are the usual high-temperature thermoplastics such as PA, PPS, PEI, PSU, LCP, PBTP and PEEK.
  • potting compound or adhesive masses based on epoxy, polyimide, silicone, or ceramic and metal composite adhesive are suitable.
  • metallic contact lugs 61, 62 can be used as electrical terminals of the lamp and wires or the electrical connections can for example also be designed as a plug or have any other shape.
  • the potting compound 7 can be arranged only in the cup-like ends 611, 621 or in the cutouts and the containers 81 ', 82' are dispensed with.
  • the contact lugs 61, 62 and the power supply wires 41, 42 instead of the contact lugs 61, 62 and the power supply wires 41, 42 have cup-like ends or cutouts, in each of which one of the contact lugs 61, 62 protrudes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP06121828A 2005-10-07 2006-10-05 Lampe Not-in-force EP1772896B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005048446A DE102005048446A1 (de) 2005-10-07 2005-10-07 Lampe

Publications (3)

Publication Number Publication Date
EP1772896A2 true EP1772896A2 (fr) 2007-04-11
EP1772896A3 EP1772896A3 (fr) 2011-01-12
EP1772896B1 EP1772896B1 (fr) 2012-05-02

Family

ID=37487488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06121828A Not-in-force EP1772896B1 (fr) 2005-10-07 2006-10-05 Lampe

Country Status (3)

Country Link
EP (1) EP1772896B1 (fr)
AT (1) ATE556427T1 (fr)
DE (1) DE102005048446A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2262901A (en) 1941-06-10 1941-11-18 Jack Slavitt Method of connecting lead wires and terminals
DE7212987U (de) 1971-04-07 1972-08-24 Thorn Electrical Ind Ltd Elektrische lampe u.dgl.
US4300189A (en) 1979-12-21 1981-11-10 General Electric Company Sealed beam lamp unit having bonded terminals
EP1006551A2 (fr) 1998-12-01 2000-06-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783642A (en) * 1928-11-02 1930-12-02 Westinghouse Lamp Co Automatic soldering machine
US2892992A (en) * 1957-02-04 1959-06-30 Gen Electric Printed circuit lamp base
GB1431275A (en) * 1972-06-06 1976-04-07 Thorn Electrical Ind Ltd Lamp cap connections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2262901A (en) 1941-06-10 1941-11-18 Jack Slavitt Method of connecting lead wires and terminals
DE7212987U (de) 1971-04-07 1972-08-24 Thorn Electrical Ind Ltd Elektrische lampe u.dgl.
US4300189A (en) 1979-12-21 1981-11-10 General Electric Company Sealed beam lamp unit having bonded terminals
EP1006551A2 (fr) 1998-12-01 2000-06-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe électrique

Also Published As

Publication number Publication date
ATE556427T1 (de) 2012-05-15
DE102005048446A1 (de) 2007-04-12
EP1772896B1 (fr) 2012-05-02
EP1772896A3 (fr) 2011-01-12

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