EP1925018A2 - Lampe a decharge haute pression dotee d'un contenant de decharge - Google Patents

Lampe a decharge haute pression dotee d'un contenant de decharge

Info

Publication number
EP1925018A2
EP1925018A2 EP06806767A EP06806767A EP1925018A2 EP 1925018 A2 EP1925018 A2 EP 1925018A2 EP 06806767 A EP06806767 A EP 06806767A EP 06806767 A EP06806767 A EP 06806767A EP 1925018 A2 EP1925018 A2 EP 1925018A2
Authority
EP
European Patent Office
Prior art keywords
electrode
pressure discharge
discharge lamp
lamp according
heating device
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.)
Withdrawn
Application number
EP06806767A
Other languages
German (de)
English (en)
Inventor
Gotthard Schleicher
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 EP1925018A2 publication Critical patent/EP1925018A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
    • 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
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • 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
    • 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
    • H01J61/526—Heating or cooling particular parts of the lamp heating or cooling of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • 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 is based on a high-pressure discharge lamp with a ceramic discharge vessel according to the preamble of claim 1.
  • These are, in particular, metal halide lamps, in particular for general lighting, or else high-pressure sodium lamps.
  • the cooling of the electrode is prevented by adding an additional heating source to the lamp.
  • This source can be mounted either internally or externally on the discharge vessel.
  • the electrode geometry can be suitably optimized in order to effectively couple the heating process.
  • the technology can also be exploited to bring about preheating of the electrodes, which improves the ignition behavior of the lamp.
  • This preheating can be constructed, for example technically analogous to the heating control of electronic ballast for fluorescent lamps.
  • An example is in DE-Az 102004044180.4 and DE-Az 102004035122.8 and in DE-A 102 52 834, DE-A 102 52 836, DE-A 102 26 899, DE-A 101 40 723, DE-A 100 53 803 and DE-A 34 41 992 indicated.
  • the heater is inside or outside the electrode.
  • the heating power can be concentrated at the desired location via the variation of the specific resistance, for example by suitable choice of material, and the cross-section of the electrode or a change in the cross-sectional area.
  • the field of application are, in particular, metal halide lamps and high-pressure sodium lamps.
  • FIG. 1 shows an electrode for a high-pressure discharge lamp with an internal heating device
  • FIG. 4 shows a high-pressure discharge lamp with head electrode
  • FIG. 5 shows a further embodiment of an electrode
  • FIG. 6 shows a discharge vessel of a high-pressure discharge lamp
  • FIG. 7 shows a further embodiment of an electrode
  • FIG. 8 shows a further embodiment of a high-pressure discharge lamp.
  • a basic circuit for an ECG for a high-pressure discharge lamp is based, for example, on the explanations in Sturm S. 217, Figure 4.44.
  • An operating method may use a bipolar rectangular supply current. This can be impressed, for example, to stabilize the commutation a short-term performance, the resulting power corresponds to the rated lamp power and is in the case of dimming below the rated power.
  • FIG. 1 shows a suitable electrode 1 for a metal halide lamp, in which a heating element 3 accommodated in the head 2 of the electrode accomplishes the heating. In this case, a contact of the heating of the cartridge with the electrode can be connected.
  • FIG. 2 shows a head 2 of an electrode 1, in which the heater is embedded as a wire 4 in thread-like grooves 5 of the head 2. Again, a contact may be connected to the electrode.
  • the heater 10 is attached to the outside of the electrode 1 at the rear part 6 of the head 2.
  • the head 2 is seated on a shaft 7.
  • the heating means is a conductive layer, in particular a conductive ceramic, preferably an electrically conductive cermet, as known per se.
  • FIG. 4 shows a high-pressure discharge lamp with a top electrode. It is a schematically shown mercury short arc lamp.
  • a discharge vessel 15 sealed on two sides contains an anode 12 and, opposite to it, a cathode 13.
  • the lamp is operated at a power of 3400 W at a current of 148 A.
  • the discharge vessel is filled with 1.4 bar xenon and 2.5 mg mercury per cm 3 .
  • the anode 12 consists of a cylindrical shaft 7 and a nem placed on it massive cylindrical head 2, which contains the heater. Only the contact 9 is visible.
  • the heating device 8 as described in Figure 1 is mounted laterally at the rear end 4 of the anode.
  • another of the electrode assemblies described in the preceding figures may be used with heating means in the lamp
  • An illumination unit additionally comprises an electrical circuit which enables a dimming operation, preferably in a wide range between 10 and 100%.
  • the disc may have a central bore through which the electrode is pushed.
  • the disc can also be designed without a hole, in this case, the electrode consists of two parts, which are fixed at the top and bottom of the disc.
  • FIG. 6 shows a typical discharge vessel 25 for high-pressure discharge lamps with needle electrode 21 and a counter-electrode 22 similar to that known in low-pressure discharge lamps.
  • the filling of the discharge vessel is adjacent to an inert ignition gas, e.g. Argon, from mercury and metal halide additives. It is also possible, for example, the use of a metal halide filling without mercury, with a high pressure is selected for the ignition gas xenon.
  • an inert ignition gas e.g. Argon
  • a metal halide filling without mercury, with a high pressure is selected for the ignition gas xenon.
  • FIG. 7 shows the head 2 of an electrode, in which the heating contact is produced by a duckbill-like tapered part 25, which is fastened to a contact 26. By the tapering of the part, a concentration of the heating power on the tip surface 27.
  • the two heating poles 28, which make contact with the head 2 be made of harnesstownbe responsiblem material.
  • FIG. 8 schematically shows a high-pressure discharge lamp 1.
  • a discharge vessel 5 sealed on two sides contains an anode 2 and, opposite to it, a cathode 3.
  • the lamp is supplied with a power of 3400 W.
  • the discharge vessel is filled with 1 .4 bar of xenon and 2.5 mg of mercury per cm 3 .
  • the anode consists of a cylindrical shaft 6 and a massive cylindrical head 7 mounted thereon.

Landscapes

  • Discharge Lamp (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne une électrode (1) d'une lampe de décharge haute pression. Un dispositif chauffant (3) est monté sur la tête (2) pour compenser les inconvénients en mode de gradation.
EP06806767A 2005-09-16 2006-09-13 Lampe a decharge haute pression dotee d'un contenant de decharge Withdrawn EP1925018A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005014660U DE202005014660U1 (de) 2005-09-16 2005-09-16 Hochdruckentladungslampe mit Entladungsgefäß
PCT/EP2006/066334 WO2007031545A2 (fr) 2005-09-16 2006-09-13 Lampe a decharge haute pression dotee d'un contenant de decharge

Publications (1)

Publication Number Publication Date
EP1925018A2 true EP1925018A2 (fr) 2008-05-28

Family

ID=35502292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806767A Withdrawn EP1925018A2 (fr) 2005-09-16 2006-09-13 Lampe a decharge haute pression dotee d'un contenant de decharge

Country Status (10)

Country Link
US (1) US20090230865A1 (fr)
EP (1) EP1925018A2 (fr)
JP (1) JP2009508313A (fr)
KR (1) KR20080047470A (fr)
CN (1) CN101263578A (fr)
AU (1) AU2006290731A1 (fr)
CA (1) CA2621376A1 (fr)
DE (1) DE202005014660U1 (fr)
TW (1) TW200715342A (fr)
WO (1) WO2007031545A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104023459A (zh) * 2014-05-08 2014-09-03 武汉市安曼特微显示科技有限公司 金属卤素灯的加热控制方法和金属卤素灯
CN108521076B (zh) * 2017-03-30 2020-03-27 谷春宁 一种气体放电管用电极及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2249672A (en) * 1936-12-10 1941-07-15 Gen Electric Discharge device
US2916653A (en) * 1957-04-01 1959-12-08 Duro Test Corp Electron emissive electrode
GB1071102A (en) * 1963-08-16 1967-06-07 Sylvania Electric Prod Electric discharge lamp
DE3408431A1 (de) * 1984-03-08 1985-09-12 Philips Patentverwaltung Gmbh, 2000 Hamburg Heizbare elektrode fuer hochdruck-gasentladungslampen
JP3969208B2 (ja) * 2002-06-25 2007-09-05 岩崎電気株式会社 高圧放電ランプ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007031545A2 *

Also Published As

Publication number Publication date
WO2007031545A3 (fr) 2007-11-29
JP2009508313A (ja) 2009-02-26
CA2621376A1 (fr) 2007-03-22
AU2006290731A1 (en) 2007-03-22
KR20080047470A (ko) 2008-05-28
DE202005014660U1 (de) 2005-12-08
US20090230865A1 (en) 2009-09-17
TW200715342A (en) 2007-04-16
CN101263578A (zh) 2008-09-10
WO2007031545A2 (fr) 2007-03-22

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