WO2007057309A1 - Lampe à décharge à haute pression - Google Patents

Lampe à décharge à haute pression Download PDF

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Publication number
WO2007057309A1
WO2007057309A1 PCT/EP2006/068086 EP2006068086W WO2007057309A1 WO 2007057309 A1 WO2007057309 A1 WO 2007057309A1 EP 2006068086 W EP2006068086 W EP 2006068086W WO 2007057309 A1 WO2007057309 A1 WO 2007057309A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
pressure discharge
face
discharge lamp
base part
Prior art date
Application number
PCT/EP2006/068086
Other languages
German (de)
English (en)
Inventor
Manfred RÖHL
Walter Bätz
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen 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 für elektrische Glühlampen mbH filed Critical Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
Publication of WO2007057309A1 publication Critical patent/WO2007057309A1/fr

Links

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 patent claim 1.
  • Such a high-pressure discharge lamp is disclosed, for example, in the publication US 2004/0130255 A1.
  • This document describes a unilaterally geskelte high-pressure discharge lamp for a motor vehicle headlight.
  • the high-pressure discharge lamp has a lamp base made of plastic, in which the discharge vessel and an outer bulb surrounding the discharge vessel are anchored by means of a metal sleeve which encloses the outer bulb.
  • the two lamp vessels protrude from an end face of the substantially cylindrical lamp base.
  • the end face of the lamp base has an end face which serves as a stop surface for mounting the high-pressure discharge lamp in the headlight reflector.
  • a disadvantage of this arrangement is that during the ignition phase of the high-pressure discharge lamp electrical flashovers between the metallic version of the headlamp, which rests on the aforementioned end face of the lamp cap, and the above metal sleeve may occur, which would adversely affect ignition of the gas discharge in the high pressure discharge lamp.
  • ignition voltage impulses of up to 30 kV are supplied to the high-pressure discharge lamp near the base of the high-pressure discharge lamp.
  • the voltage applied to the end face metallic version of the headlamp and preferably also the remote base electrode and connected to it, running outside the lamp vessels and returned to the lamp base current return are at ground reference potential.
  • electrical flashovers of metal parts of the high-pressure discharge lamp to metal parts of the headlight should be avoided.
  • the high-pressure discharge lamp according to the invention has a lamp base part of electrically insulating material and at least one lamp vessel, which is fixed in the lamp base by means of a metallic holder, so that the at least one lamp vessel protrudes from an end face of the lamp base part.
  • an annular collar made of an electrically insulating material is provided which surrounds the at least one lamp vessel and the metallic holder and projects beyond an end face of the lamp base part arranged on the front side. The annular collar increases the distance for electrical flashovers between the metallic holder and a voltage applied to the end face metallic version of the headlamp. As a result, the risk of electrical flashovers between the metallic holder and the metallic socket of the headlamp existing during the ignition phase of the high-pressure discharge lamp is reduced.
  • the height of the annular collar over the end face of the lamp base part is at least three millimeters, to ensure that at ignition voltage pulses of up to 25 kV no electrical flashovers between the metallic holder and the metallic version of the headlamp occur.
  • the height of the annular collar over the end face of the lamp base part is approximately six millimeters. This ensures that with ignition voltage pulses of up to 30 kV no electric flashovers between the metallic holder and the metallic version of the headlamp occur.
  • the annular collar can also be increased to improve the electrical insulation of the metallic holder so far that its height above the end face of the lamp base part is greater than or equal to the height of the metallic holder over the end face.
  • the annular collar should have a sufficient distance from the discharge space of the high pressure discharge lamp to light shading by the annular collar and excessive heating of the annular collar during lamp operation and the release of gases from the material of the annular collar, which condense in the headlight and would obscure the headlight reflector.
  • the outer diameter of the annular collar is preferably smaller than the dimensions of the lamp base part in the region of its end face, perpendicular to the ring axis of the annular collar, so that the end face or a part of the end face of the lamp base part remains accessible as a stop surface for the version of the headlight.
  • the annular collar is advantageously formed integrally with the lamp base part.
  • the lamp base part and the annular collar can be designed, for example, as a plastic injection-molded part.
  • Figure 1 is a side view of a high pressure discharge lamp according to the first embodiment of the invention
  • FIG. 2 shows a cross section through the high-pressure discharge lamp depicted in FIG - A -
  • Figure 3 is a side view of a high pressure discharge lamp according to the second embodiment of the invention.
  • the first exemplary embodiment depicted in FIGS. 1 and 2 is a single-capped high-pressure discharge lamp, which is preferably provided for use in a vehicle headlight.
  • the lamp can also be used for other purposes, for example for color-neutral lighting of buildings and works of art as well as a light source for photo-optical applications.
  • This lamp has a soffittenartiges discharge vessel 100 with a gas-tight discharge chamber 103, a socket near 101 and a sockelfernen 102 squeezing.
  • the lamp base has a base sleeve 110 consisting of a plastic injection-molded part, in which the discharge vessel 100 and the outer bulb 116 fused thereto.
  • the end of the base shell 110 facing away from the discharge vessel 100 is designed as a plug with two electrical contacts 112, 113.
  • the center contact 112 is connected in an electrically conductive manner to the power supply 108 routed out of the socket-like crimping end 101, while the other, annular electrical contact 113 is electrically conductively connected to the power supply 109 protruding from the squeeze-out crimping end 102 away from the socket 114 surrounded by a ceramic tube 114.
  • the discharge vessel 100 is surrounded by a cylindrical, almost coaxial with the discharge vessel 100 arranged outer piston 116, which is merged with the sockel distant crimp end 102 and a sleeve 110 extending in the base, tubular extension 117 of the discharge vessel 100.
  • a metal sleeve 118 which surrounds the outer piston 116 with a clamping fit and four angled metal tabs 119, the first end is welded to the metal sleeve 118 and the second end respectively in the plastic material of Base sleeve 110 is anchored.
  • the base sleeve 110 has at its end remote from the electrical contacts an annular end face 120 which is perpendicular to the longitudinal axis of the high-pressure discharge lamp. In the region of the end face 120, the base sleeve 110 has an enlarged outer diameter and an increased wall thickness.
  • the base sleeve 110 is provided with an annular collar 121 which terminates with the end face 120 of the base sleeve 110 and has a height of 6 mm above the end face 120.
  • the annular collar 121 surrounds the two lamp vessels 100, 116 and the metal collar 118. Its outer diameter is smaller than the outer diameter of the base sleeve 110 in the region of the end face 120.
  • the metal collar 118 extends over a maximum height of about 10 mm above the End face 120 of the base sleeve 110.
  • the annular collar 121 is fused or integrally formed with the end face 120 of the base sleeve 110.
  • FIG. 3 shows a high-pressure discharge lamp according to the second exemplary embodiment of the invention.
  • This high-pressure discharge lamp is also provided for use as a light source in a motor vehicle headlight. It differs from the high-pressure discharge lamp according to the first embodiment only in that the lamp base has a cuboid lower part 122, in which the components of a pulse ignition device for igniting the gas discharge in the high-pressure discharge lamp are arranged.
  • the cuboid lower part 122 is integrally formed on the cylindrical base sleeve 110.
  • the block-shaped lower part 122 has a socket 123, which serves for connecting a cable for supplying power to the high-pressure discharge lamp and the pulse ignition device accommodated in the lower part 122.
  • the first and second embodiments are the same. Therefore, the same reference numerals are used in Figures 2 and 3 for identical components of the high pressure discharge lamp.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne une lampe à décharge à haute pression munie d'une partie socle de lampe (110) en matériau électriquement isolant et d'au moins une cuve de lampe (100, 116) qui est fixée dans la partie socle de lampe (110) au moyen d'un support métallique (118, 119) de telle sorte que ladite ou lesdites cuves de lampe (100, 116) fassent saillie d'un côté frontal de la partie socle de lampe (110), un collet (121) annulaire en un matériau électriquement isolant étant prévu, lequel entoure ladite ou lesdites cuves de lampe (100, 116) ainsi que le support métallique (118, 119) et fait saillie d'une surface frontale (120) de la partie socle de lampe (110) qui se trouve du côté frontal.
PCT/EP2006/068086 2005-11-15 2006-11-03 Lampe à décharge à haute pression WO2007057309A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510054859 DE102005054859A1 (de) 2005-11-15 2005-11-15 Hochdruckentladungslampe
DE102005054859.8 2005-11-15

Publications (1)

Publication Number Publication Date
WO2007057309A1 true WO2007057309A1 (fr) 2007-05-24

Family

ID=37478806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/068086 WO2007057309A1 (fr) 2005-11-15 2006-11-03 Lampe à décharge à haute pression

Country Status (2)

Country Link
DE (1) DE102005054859A1 (fr)
WO (1) WO2007057309A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014170748A (ja) * 2008-04-25 2014-09-18 Koninklijke Philips Nv 高圧放電ランプ

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130203276A1 (en) * 2010-10-18 2013-08-08 Koninklijke Philips Electronics N.V. Lamp socket

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321866A2 (fr) * 1987-12-22 1989-06-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à d'echarge à haute pression
EP0786791A1 (fr) * 1996-01-25 1997-07-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe électrique
US20020060912A1 (en) * 2000-11-21 2002-05-23 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh High-pressure discharge lamp for motor vehicle headlights

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321866A2 (fr) * 1987-12-22 1989-06-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à d'echarge à haute pression
EP0786791A1 (fr) * 1996-01-25 1997-07-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe électrique
US20020060912A1 (en) * 2000-11-21 2002-05-23 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh High-pressure discharge lamp for motor vehicle headlights

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014170748A (ja) * 2008-04-25 2014-09-18 Koninklijke Philips Nv 高圧放電ランプ

Also Published As

Publication number Publication date
DE102005054859A1 (de) 2007-05-24

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