EP0566975B1 - Einseitig gesockelte Hochdruckentladungslampe - Google Patents

Einseitig gesockelte Hochdruckentladungslampe Download PDF

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Publication number
EP0566975B1
EP0566975B1 EP93106061A EP93106061A EP0566975B1 EP 0566975 B1 EP0566975 B1 EP 0566975B1 EP 93106061 A EP93106061 A EP 93106061A EP 93106061 A EP93106061 A EP 93106061A EP 0566975 B1 EP0566975 B1 EP 0566975B1
Authority
EP
European Patent Office
Prior art keywords
cap
pressure discharge
discharge lamp
base
lamp according
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
EP93106061A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0566975A1 (de
Inventor
Wolfgang Greiler
Bernd Lewandowski
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 EP0566975A1 publication Critical patent/EP0566975A1/de
Application granted granted Critical
Publication of EP0566975B1 publication Critical patent/EP0566975B1/de
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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • 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

Definitions

  • the invention relates to a high-pressure discharge lamp with a base on one side, according to the preamble of protection claim 1.
  • Such high-pressure discharge lamps are disclosed, for example, in GB-PS 2 100 404.
  • high-pressure discharge lamps require a considerably higher ignition voltage in the hot state than in the cold state. This means that if a high-pressure discharge lamp is to be started again immediately after it has been switched off, a much higher ignition voltage must be made available than in the cooled state. For many applications, high-pressure discharge lamps are desired which have this ability to re-ignite and can thus be switched on and off at will without waiting for the cooling phase. However, particularly high demands are made of the high-voltage strength of the base for such lamps.
  • GB-PS 2 100 404 describes a high-pressure discharge lamp with a base on one side, which has a lamp base with improved high-voltage strength and which is therefore hot re-ignitable. This is made possible by a ceramic separator, which is located between the contact pins protruding from the lamp base and the lamp power supply lines is located and which is either formed as part of the socket and engages in a slot of the lamp base between the contact pins, or is made in one piece with the ceramic base and engages in a fitting recess in the lamp socket.
  • US Pat. No. 4,542,316 discloses a high-pressure discharge lamp with a base on one side, which is also hot-re-ignitable and whose lamp base has improved high-voltage insulation. There is an axially extending separator made of mica inside the base, which prevents spray discharges and leakage currents between the current leads.
  • the single-ended high-pressure discharge lamps described in the prior art cited above have a base whose high-voltage insulation is sufficient to enable hot re-ignition in the case of high-pressure discharge lamps of low and medium electrical power consumption.
  • tests have shown that the high-voltage strength of these lamp bases according to the prior art is still too low to also ensure hot re-ignition in high-wattage, single-ended high-pressure discharge lamps.
  • High-wattage single-ended high-pressure discharge lamps with an electrical power consumption of approx. 6,000 to 12,000 W require electrical voltages of up to 70,000 V for hot re-ignition.
  • the additional separating webs according to the invention made of electrically insulating material prevent undesirable leakage currents within the base and spray discharges between the current leads and the contacts.
  • the further separating webs extend in the axial direction from the front base wall to approximately the crimped end of the lamp bulb, which is fixed in the base.
  • the paths for leakage currents between the current leads within the base are considerably extended.
  • the current-carrying parts within the base are better shielded from one another by these further separating webs, so that no spray discharges take place between them.
  • the base has a nose-like recess between its contacts, in which a frame web engages in a fitting manner. This prevents leakage current between the contacts along the base and socket body interface.
  • FIG. 1 shows the structure of a high-pressure discharge lamp according to the invention which is capped on one side.
  • the high-pressure discharge lamp has a discharge vessel 1 made of quartz glass, in which an ionizable filling gas and two electrodes 2 are enclosed.
  • the discharge vessel 1 is held in an evacuated outer bulb 4 by means of a two-part frame 3a, 3b.
  • a frame bracket 3a is partially surrounded by a quartz glass tube 3c, which is melted into one end 4a of the outer bulb 4.
  • the outer bulb 4 is essentially axially symmetrical and has a crimped end 4a with which it is cemented in a ceramic base 5, which consists of two identical halves 5a, 5b which are screwed together.
  • the base area is in FIG. 1 shown cut.
  • two molybdenum foils 6a, 6b are melted in a gas-tight manner, each producing an electrically conductive connection between a part of the frame 3a or 3b and a power supply 7a or 7b protruding from the crimped end 4a.
  • the two power supply lines 7a, 7b run inside the base 5 and are each connected to a metallic contact pin 8a, 8b led out of the base 5.
  • the base 5 has on its end face 5c, which lies opposite the crimped end 4a, a nose-like recess 9, in which a fit-shaped web of a socket body (not shown) engages.
  • a separating web 10 made of mica which runs centrally between the current leads 7a, 7b in the axial direction. This separating web 10 engages in a slot 11 in the crimped end 4a of the outer bulb 4 and extends to the end wall 5c of the base 5.
  • the separating web 10 which is designed here as a mica plate, is fixed in slot-like depressions 12 in the base wall.
  • a further separating web 13 runs in the interior of the base 5, which extends in the axial direction from the end-side base wall 5c to approximately the middle of the dividing web 10. Since the separating web 10 disappears almost up to half in the pinch slot 11, the further dividing webs 13 extend axially Direction also almost to the crimped end 4a of the outer bulb 4.
  • These further separating webs 13 likewise consist of a mica plate and are also fixed in slot-like recesses 14 in the wall of the base body 5.
  • the additional separators 13 form an acute angle with the centrally arranged separator 10, so that in each case only a small gap remains between the separators 10, 13.
  • the high-pressure discharge lamp described here in the exemplary embodiment is a lamp with a power consumption of 6,000 W.
  • the lamp base according to the invention has a high-voltage strength of more than 70,000 V.
  • Figure 4 shows a cross section through the lamp base 5 according to a second embodiment.
  • This second exemplary embodiment differs from the first only by two approximately axially extending air channels 17, 18 in the lamp base 5.
  • the air channels 17, 18 are formed by the wall of the nose-like recess 9 and by the separating webs 10 and 13 fixed in the recesses 12 and 14, respectively educated. They allow a cooling air flow G through the lamp base 5 and thus allow cooling of the pinch end 4a of the lamp.
  • the lamp base according to the invention can also be used for single-ended high-pressure discharge lamps with an even greater output, for example 12 kW.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
EP93106061A 1992-04-23 1993-04-14 Einseitig gesockelte Hochdruckentladungslampe Expired - Lifetime EP0566975B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9205537U DE9205537U1 (de) 1992-04-23 1992-04-23 Einseitig gesockelte Hochdruckentladungslampe
DE9205537U 1992-04-23

Publications (2)

Publication Number Publication Date
EP0566975A1 EP0566975A1 (de) 1993-10-27
EP0566975B1 true EP0566975B1 (de) 1996-07-03

Family

ID=6878780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93106061A Expired - Lifetime EP0566975B1 (de) 1992-04-23 1993-04-14 Einseitig gesockelte Hochdruckentladungslampe

Country Status (4)

Country Link
US (1) US5541472A (es)
EP (1) EP0566975B1 (es)
JP (1) JPH0592944U (es)
DE (2) DE9205537U1 (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9205537U1 (de) * 1992-04-23 1992-06-17 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Einseitig gesockelte Hochdruckentladungslampe
EP0593117A1 (en) * 1992-10-12 1994-04-20 Koninklijke Philips Electronics N.V. Capped electric lamp
ATE208085T1 (de) * 1997-01-31 2001-11-15 Heraeus Noblelight Gmbh Optischer strahler
DE19913299A1 (de) * 1999-03-24 2000-09-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe
DE19913297C1 (de) * 1999-03-24 2000-04-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe
JP3657461B2 (ja) * 1999-06-15 2005-06-08 株式会社小糸製作所 放電バルブ
CN2678122Y (zh) * 2003-11-28 2005-02-09 柴国生 带灯头的单端高气压放电灯
DE102009033454B3 (de) * 2009-07-16 2011-03-31 Osram Gesellschaft mit beschränkter Haftung Lampenfassung und Lampensockel für eine Gasentladungslampe
US8193689B2 (en) * 2010-10-11 2012-06-05 General Electric Company Metal halide lamp shrouding
CN102761042B (zh) * 2011-04-29 2014-12-03 余乐恩 陶瓷材料整体式安全电工电气组件的制造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1764866A1 (de) * 1968-08-21 1971-11-18 Patra Patent Treuhand Anordnung zur Wiederzuendung einer betriebswarmen Quecksilberdampf-Hochdruckentladungslampe mit Zusaetzen
GB2100503B (en) * 1981-06-06 1985-05-30 Emi Plc Thorn Discharge lamps
GB2100404B (en) * 1981-06-12 1985-02-13 Emi Plc Thorn Discharge lamps-combined lamp and socket
DE3236462A1 (de) * 1982-10-01 1984-04-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe mit sockel und zugehoeriger fassung
JPH0719565B2 (ja) * 1986-07-07 1995-03-06 ウエスト電気株式会社 閃光放電管
US4758760A (en) * 1987-12-07 1988-07-19 Gte Products Corporation Convectively cooled ceramic lamp base
JPH0719566B2 (ja) * 1989-07-31 1995-03-06 株式会社小糸製作所 放電ランプの支持構造
US4985656A (en) * 1989-09-05 1991-01-15 Gte Products Corporation Lamp with re-enforced tubular base pins
DE9205537U1 (de) * 1992-04-23 1992-06-17 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Einseitig gesockelte Hochdruckentladungslampe

Also Published As

Publication number Publication date
JPH0592944U (ja) 1993-12-17
DE59303106D1 (de) 1996-08-08
EP0566975A1 (de) 1993-10-27
US5541472A (en) 1996-07-30
DE9205537U1 (de) 1992-06-17

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