EP1493169A1 - Lampes a decharge d'intensite elevee, tubes a arc et procedes de fabrication associes - Google Patents

Lampes a decharge d'intensite elevee, tubes a arc et procedes de fabrication associes

Info

Publication number
EP1493169A1
EP1493169A1 EP02725573A EP02725573A EP1493169A1 EP 1493169 A1 EP1493169 A1 EP 1493169A1 EP 02725573 A EP02725573 A EP 02725573A EP 02725573 A EP02725573 A EP 02725573A EP 1493169 A1 EP1493169 A1 EP 1493169A1
Authority
EP
European Patent Office
Prior art keywords
arc tube
end portion
chamber
fill gas
atmosphere
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Withdrawn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
EP02725573A
Other languages
German (de)
English (en)
Other versions
EP1493169A4 (fr
Inventor
Abbas Lamouri
Juris Sulcs
Yongwei Gu
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.)
Advanced Lighting Technologies Inc
Original Assignee
Advanced Lighting Technologies Inc
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 Advanced Lighting Technologies Inc filed Critical Advanced Lighting Technologies Inc
Publication of EP1493169A1 publication Critical patent/EP1493169A1/fr
Publication of EP1493169A4 publication Critical patent/EP1493169A4/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Withdrawn legal-status Critical Current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
    • 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
    • H01J9/395—Filling vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors
    • H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device
    • H01J9/326—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device making pinched-stem or analogous seals

Definitions

  • the present invention generally relates to high intensity discharge (“HID”) lamps
  • HID lamps such as metal halide and mercury lamps have found widespread use in
  • Metal halide lamps are often preferred because of the efficiency of such lamps in
  • HID lamps include an arc tube supported within an outer lamp envelope.
  • the arc is supported within an outer lamp envelope. The arc
  • tube comprises a generally tubular body of light transmissive material such as quartz or
  • arc tube body is a "cylindrical" body formed from
  • quartz tubing having the diameter of the generally cylindrical arc tube chamber in which
  • the chamber is formed by pinch-sealing the end portions of the tubing.
  • arc tube body is a "formed" body which is formed from quartz tubing of a much smaller
  • arc tubes i.e. arc tubes having spaced apart electrodes with one sealed at each end.
  • the arc tubes for HID lamps may also be "single-ended" arc tubes having a bulbous chamber
  • An arc tube includes a pair of spaced apart electrodes between which the arc is
  • the electrode lead assembly is sealed in each end portion of the arc tube.
  • tungsten electrode typically comprises a tungsten electrode, a molybdenum foil, and an outer molybdenum
  • the light emitting chamber is sealed by positioning the
  • an "uncontrolled atmosphere” is any substance
  • the light emitting chamber of the arc tube body In the manufacture of HID lamps, the light emitting chamber of the arc tube body
  • solid lamp fill material such as one or more metal halides. This material is
  • an arc tube body is
  • a fill/exhaust tube is then fused near the
  • exhaust tube provides a means for communication between the interior of the chamber
  • the electrode lead assemblies are positioned and
  • a non-reactive gas is introduced into the chamber through the fill/exhaust tube to
  • a “non-reactive" gas is a gas
  • the condensed halides may also disturb the light emitted from the chamber and the condensed halides may
  • optical systems such as fiber optics, projection display, and automotive
  • envelope must be of a larger diameter to envelope an arc tube with a radially protruding
  • the known methods of making tipless arc tubes include the steps of
  • the non-reactive gas is commonly introduced into
  • the interior of the body is then filled with a non-reactive gas through the open
  • the solid fill material and mercury are introduced into the interior of the arc tube body
  • the second electrode lead assembly is positioned in the remaining open end portion.
  • one end portion of the arc tube body must be long enough to enclose the entire electrode lead assembly when the assembly is positioned
  • the arc tube body is filled with the
  • portion is sealed by shrinking or pinching, after which the excess portion of the end
  • portion may be removed to expose the outer lead of the electrode lead assembly.
  • a fill pressure of about 100 torr is common in metal halide lamps.
  • Heider et al. disclose raising the temperature of the
  • significantly subatmospheric fill pressure i.e., a pressure less than 500 torr, may be
  • Figure 1 is a cross-sectional view of an arc tube body having a bulbous light
  • Figures 2a - e illustrate the prior art process steps for forming the arc tube body
  • Figure 3 a illustrates the step of heating the end portion of an arc tube body
  • Figure 3b is a cross-sectional view of an arc tube body having an electrode lead
  • Figure 4 is a schematic illustrating an electrode lead assembly.
  • Figure 5 illustrates the step of introducing the solid lamp fill material and mercury
  • Figure 6 is a cross-sectional view of a prior art arc tube body having its elongated end portion tipped off beyond the electrode lead assembly.
  • Figure 7 illustrates the step of heating the upper end portion of an arc tube body
  • Figure 8 is a cross-sectional view of an arc tube made by one method of the
  • Figure 9 is a cross-sectional view of one embodiment of an arc tube body
  • Figure 10 is a cross-sectional view of an arc tube made from the arc tube body
  • Figure 11a illustrates the step of flushing and filling the arc tube body with the
  • Figure 1 lb illustrates the step of positioning the electrode lead assembly and pinch
  • the present invention finds utility in arc tubes for all types and sizes of HLD lamps
  • Figure 1 illustrates a prior art arc tube body which has been formed from a quartz
  • the arc tube body 10 comprises a bulbous light emitting chamber 12 intermediate open tubular end portions 14,16.
  • the arc tube body 10 may be formed using any suitable
  • Formed body arc tubes may be manufactured in the manner described in the
  • FIGS. 2a - e illustrate such a method of forming arc tubes
  • the thickness of the arc tube body may be adjusted
  • tube body is determined by the shape of the mold.
  • a first electrode lead assembly 18 is positioned
  • end portion 14 is heated to soften the quartz, and then the softened portion is pressed
  • pinch seal 20 is formed using conventional pinch jaws (not shown) forming pinch seal 20.
  • the pinch seal 20 is formed using conventional pinch jaws (not shown) forming pinch seal 20.
  • the electrode lead assembly 18 may be a conventional lead assembly comprising
  • tungsten electrode 22 tungsten electrode 22
  • molybdenum foil 24 tungsten electrode 22
  • molybdenum foil 24 tungsten electrode 22
  • molybdenum foil 24 molybdenum foil 24
  • the metallic components may reach temperatures as high as 2000°C or more when the
  • an inert gas is introduced into the chamber 12 through the
  • the gas may be introduced by any conventional means such as
  • the gas may be any inert gas such as nitrogen or argon or
  • the next step is to dose the arc tube body with the desired fill material by
  • the solid lamp fill material 30 may be introduced into the chamber 12 through the
  • Figure 5 illustrates an arc tube body 10 having lamp fill pellets 30
  • the remaining steps in the process include the flushing and filling of the chamber
  • the open end portion 16 may be fused closed
  • portion 16 by isolating the components in an inert atmosphere within the interior of the
  • uncontrolled atmosphere by use of a glove box or vacuum system may be obviated by orienting the arc tube body 10 so that the open end portion 16 extends upwardly as
  • the final inert fill gas may be
  • the fill gas may be any inert gas such as argon, neon, xenon, krypton, or a
  • the fill gas in the preferred embodiment of the invention, the fill gas
  • the mixture of argon and krypton is heavier
  • the interior of the arc tube body 10 is flushed and filled with the fill gas to the tip
  • the probe 34 may be removed and the second electrode lead assembly
  • the second end portion 16 may then be sealed by a
  • a portion of the end portion 16 is heated to soften the quartz, and then the softened portion is pressed together and around the portion of the
  • pinch seal 36 fixes the position of the assembly 32 relative to
  • the arc tube body 10 and provides a hermetic seal between the interior of the chamber 12
  • end portion may be sealed by a shrink sealing process.
  • the chamber 12 is now hermetically sealed from
  • FIGS 9 and 10 illustrate another emdodiment of the present invention.
  • tube body 50 may be formed having a chamber 52 intermediate the open end portions
  • the end portions 54,56 may have substantially the same length. In the preferred embodiment
  • the length of the end portions 54,56 of the arc tube body 50 may be
  • the column of fill gas may be extended beyond the length of the end portion by communication of the open end portion
  • a flush and fill block 60 forms a main shaft 62 which communicates with
  • the block 60 forms the main shaft 62 and one or more auxiliary shafts 64 which
  • open end of the end portion 56 may be positioned relative to the block 60 to effect
  • the interior of the arc tube chamber 52 and open end portion 56 may be flushed and
  • the fill gas now fills the end portion 56 and the main shaft 62 and
  • the electrode lead assembly 58 may then be positioned within
  • the electrode lead assembly 58 may be completely immersed in the fill gas to prevent corrosion during the pinch
  • the end portion 56 may be sealed by a shrink seal process.
  • fill gas and surrounding atmosphere are the same and the fill gas may expand or contract
  • the arc chamber may be heated to thereby elevate the arc chamber
  • the pressure will be substantially atmospheric pressure and elevating the
  • gas at substantially room temperature may be controlled by controlling the temperature of
  • a burner 70 applies direct heat to the bulbous chamber
  • heat applied to the fill gas may be controlled according to the desired fill gas pressure of
  • the fill gas may be cooled at the

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

L'invention concerne un tube à arc exempt d'embout (12) pour lampe à décharge d'intensité élevée, et un procédé de fabrication associé. Selon cette invention, l'utilisation de la densité différente de gaz pour isoler l'atmosphère étanchéifiée de l'atmosphère externe permet à l'extrémité d'un tube à arc (38) de rester ouverte à une atmosphère non régulée, pendant l'étape de remplissage de gaz et l'étape subséquente de fermeture hermétique du tube par un scellage par pincement au niveau de l'ensemble de fil (32). En outre, la pression finale du gaz de remplissage contenu hermétiquement à l'intérieur du tube à arc (12) peut être commandée par la régulation de la température du gaz de remplissage au cours de la fermeture hermétique, ce qui permet d'éviter d'avoir recours à une pompe pour réguler la pression du gaz de remplissage.
EP02725573A 2002-04-09 2002-04-09 Lampes a decharge d'intensite elevee, tubes a arc et procedes de fabrication associes Withdrawn EP1493169A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/011053 WO2003088295A1 (fr) 2002-04-09 2002-04-09 Lampes a decharge d'intensite elevee, tubes a arc et procedes de fabrication associes

Publications (2)

Publication Number Publication Date
EP1493169A1 true EP1493169A1 (fr) 2005-01-05
EP1493169A4 EP1493169A4 (fr) 2006-08-23

Family

ID=29247964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02725573A Withdrawn EP1493169A4 (fr) 2002-04-09 2002-04-09 Lampes a decharge d'intensite elevee, tubes a arc et procedes de fabrication associes

Country Status (6)

Country Link
EP (1) EP1493169A4 (fr)
JP (1) JP2005522842A (fr)
KR (1) KR100760712B1 (fr)
CN (2) CN101552169A (fr)
AU (1) AU2002256129A1 (fr)
WO (1) WO2003088295A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4509754B2 (ja) * 2004-12-02 2010-07-21 株式会社小糸製作所 放電ランプ装置用アークチューブおよび同アークチューブの製造方法
EP1831916B1 (fr) * 2004-12-27 2008-12-03 Ceravision Limited Procédé de fabrication d'une ampoule incandescent sans électrode
KR100787795B1 (ko) * 2006-07-14 2007-12-21 (주)엠오텍 에이치아이디 램프 제조용 아크튜브 밀봉절단 장치
GB201208369D0 (en) * 2012-05-10 2012-06-27 Ceravision Ltd Plasma crucible sealing
JP6007656B2 (ja) * 2012-08-06 2016-10-12 ウシオ電機株式会社 エキシマランプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311439A (en) * 1962-03-22 1967-03-28 Lampes Elect Fab Reunies Method of filling electric incandescent lamps, discharge tubes or the like with gas and of sealing the same
JPH02295060A (ja) * 1989-05-09 1990-12-05 Stanley Electric Co Ltd 管球の製造方法
WO2002099832A1 (fr) * 2001-05-30 2002-12-12 Advanced Lighting Technologies, Inc. Lampes a decharge de haute intensite, tubes a arc et procedes de fabrication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU207175B (en) * 1986-02-12 1993-03-01 Tungsram Reszvenytarsasag Device for manufacturing discharge tube of a sodium vapour discharge lamp
US5108333A (en) * 1988-12-19 1992-04-28 Patent Treuhand fur elektrische Gluhlampen m.b.H. Method of making a double-ended high-pressure discharge lamp
US5133682A (en) * 1990-11-02 1992-07-28 Gte Products Corporation Method and mold for fabricating an arc tube for an arc discharge lamp
US5176558A (en) * 1991-05-01 1993-01-05 Gte Products Corporation Methods for removing contaminants from arc discharge lamps
US5825129A (en) * 1996-05-31 1998-10-20 U.S. Philips Corporation High pressure discharge lamp having pirch seals
EP0866488B1 (fr) * 1997-03-17 2004-03-03 Matsushita Electric Industrial Co., Ltd. Procédé de fabrication d'une lampe à décharge à haute pression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311439A (en) * 1962-03-22 1967-03-28 Lampes Elect Fab Reunies Method of filling electric incandescent lamps, discharge tubes or the like with gas and of sealing the same
JPH02295060A (ja) * 1989-05-09 1990-12-05 Stanley Electric Co Ltd 管球の製造方法
WO2002099832A1 (fr) * 2001-05-30 2002-12-12 Advanced Lighting Technologies, Inc. Lampes a decharge de haute intensite, tubes a arc et procedes de fabrication

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 074 (E-1036), 21 February 1991 (1991-02-21) & JP 02 295060 A (STANLEY ELECTRIC CO LTD), 5 December 1990 (1990-12-05) *
See also references of WO03088295A1 *

Also Published As

Publication number Publication date
EP1493169A4 (fr) 2006-08-23
WO2003088295A1 (fr) 2003-10-23
JP2005522842A (ja) 2005-07-28
KR100760712B1 (ko) 2007-09-21
CN1513194A (zh) 2004-07-14
AU2002256129A1 (en) 2003-10-27
CN100550258C (zh) 2009-10-14
CN101552169A (zh) 2009-10-07
KR20040103742A (ko) 2004-12-09

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Inventor name: GU, YONGWEI

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Inventor name: LAMOURI, ABBAS

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