EP0650184A4 - Structure of sealing part of arc tube and method of manufacturing the same. - Google Patents

Structure of sealing part of arc tube and method of manufacturing the same.

Info

Publication number
EP0650184A4
EP0650184A4 EP93914987A EP93914987A EP0650184A4 EP 0650184 A4 EP0650184 A4 EP 0650184A4 EP 93914987 A EP93914987 A EP 93914987A EP 93914987 A EP93914987 A EP 93914987A EP 0650184 A4 EP0650184 A4 EP 0650184A4
Authority
EP
European Patent Office
Prior art keywords
region
bulb
core
thermal expansion
expansion coefficient
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
EP93914987A
Other languages
German (de)
French (fr)
Other versions
EP0650184B1 (en
EP0650184A1 (en
Inventor
Hiroyuki Nagayama
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.)
Toto Ltd
Original Assignee
Toto Ltd
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 Toto Ltd filed Critical Toto Ltd
Publication of EP0650184A1 publication Critical patent/EP0650184A1/en
Publication of EP0650184A4 publication Critical patent/EP0650184A4/en
Application granted granted Critical
Publication of EP0650184B1 publication Critical patent/EP0650184B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/26—Sealing together parts of vessels
    • H01J9/265—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps
    • H01J9/266—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps specially adapted for gas-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
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel
    • 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
    • H01J61/361—Seals between parts of vessel
    • H01J61/363—End-disc seals or plug seals
    • 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
    • H01J61/366—Seals for leading-in conductors
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

A structure of the sealing part of a discharge lamp, in which an open end of a bulb is sealed with a closing body having a core part constituting an electrode. The composition component of the closing body is the one which has substantially the same thermal expansion coefficient as that of the bulb in the region on the bulb side adjacent to the open end of the bulb, and also, has substantially the same thermal expansion coefficient as that of the core in the region on the core side adjacent to the core part. The component in the intermediate region between the bulb and core sides is adjusted so that it has a thermal expansion coefficient which gradually changes from that of the bulb side region to that of the core side region. The bulb region side and the core region side are separated by the intermediate region to form the independent bulb side region layer and the core side region layer, respectively. The intermediate region is structured with at least one layer having a thermal expansion coefficient gradually changing from that of the bulb side region to that of the core side region. Preferably, the thickness of the layers of the closing body gradually increase from the bulb side region to the core side region.
EP93914987A 1992-07-09 1993-07-09 Structure of sealing part of arc tube and method of manufacturing the same Expired - Lifetime EP0650184B1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP206092/92 1992-07-09
JP20609292 1992-07-09
JP20609292 1992-07-09
JP323676/92 1992-11-09
JP32367692 1992-11-09
JP32367692 1992-11-09
JP2868293 1993-01-25
JP2868293 1993-01-25
JP28682/93 1993-01-25
PCT/JP1993/000959 WO1994001884A1 (en) 1992-07-09 1993-07-09 Structure of sealing part of arc tube and method of manufacturing the same

Publications (3)

Publication Number Publication Date
EP0650184A1 EP0650184A1 (en) 1995-04-26
EP0650184A4 true EP0650184A4 (en) 1997-05-07
EP0650184B1 EP0650184B1 (en) 2002-06-05

Family

ID=27286281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93914987A Expired - Lifetime EP0650184B1 (en) 1992-07-09 1993-07-09 Structure of sealing part of arc tube and method of manufacturing the same

Country Status (7)

Country Link
EP (1) EP0650184B1 (en)
JP (1) JP3456212B2 (en)
KR (1) KR100303570B1 (en)
AU (1) AU4514593A (en)
CA (1) CA2139839A1 (en)
DE (1) DE69331991T2 (en)
WO (1) WO1994001884A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5742123A (en) * 1992-07-09 1998-04-21 Toto Ltd. Sealing structure for light-emitting bulb assembly and method of manufacturing same
US6020685A (en) * 1997-06-27 2000-02-01 Osram Sylvania Inc. Lamp with radially graded cermet feedthrough assembly
DE19727428A1 (en) * 1997-06-27 1999-01-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metal halide lamp with ceramic discharge tube
US5861714A (en) * 1997-06-27 1999-01-19 Osram Sylvania Inc. Ceramic envelope device, lamp with such a device, and method of manufacture of such devices
DE19727429A1 (en) 1997-06-27 1999-01-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metal halide lamp with ceramic discharge tube
JP3736710B2 (en) 1997-09-08 2006-01-18 ウシオ電機株式会社 Electric introduction for tube
JP3628854B2 (en) 1997-11-14 2005-03-16 日本碍子株式会社 High pressure discharge lamp and manufacturing method thereof
EP1107286A1 (en) * 1999-12-02 2001-06-13 Ushiodenki Kabushiki Kaisha High pressure mercury lamp
US6873108B2 (en) 2001-09-14 2005-03-29 Osram Sylvania Inc. Monolithic seal for a sapphire metal halide lamp
JP2003346722A (en) * 2002-05-28 2003-12-05 Nec Lighting Ltd High pressure discharge lamp and manufacturing method of the same
EP1585168A4 (en) * 2003-09-22 2006-07-05 Matsushita Electric Ind Co Ltd Metal halide lamp
CN1839461B (en) * 2004-06-08 2010-11-17 日本碍子株式会社 Luminous containers and those for high pressure discharge lamps
WO2005122214A1 (en) * 2004-06-08 2005-12-22 Ngk Insulators, Ltd. Light-emitting vessel and light-emitting vessel for high-pressure discharge lamp
JP4585823B2 (en) * 2004-09-24 2010-11-24 東芝ライテック株式会社 Tube and sealing member
EP1807862A1 (en) * 2004-10-25 2007-07-18 Koninklijke Philips Electronics N.V. Electric discharge lamp
US20060211568A1 (en) 2005-03-16 2006-09-21 Osram Sylvania Inc. High Total Transmittance Alumina Discharge Vessels Having Submicron Grain Size
JP4454527B2 (en) * 2005-03-31 2010-04-21 日本碍子株式会社 Arc tube and high pressure discharge lamp
US7247591B2 (en) 2005-05-26 2007-07-24 Osram Sylvania Inc. Translucent PCA ceramic, ceramic discharge vessel, and method of making
US8299709B2 (en) 2007-02-05 2012-10-30 General Electric Company Lamp having axially and radially graded structure
JP5262911B2 (en) * 2009-03-30 2013-08-14 パナソニック株式会社 Discharge tube and discharge tube manufacturing method
US20140073215A1 (en) * 2012-09-12 2014-03-13 General Electric Company Reduced mass end plugs for voidless cmh lamps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2032277A1 (en) * 1970-06-25 1971-12-30 Egyesuelt Izzolampa Power supply construction for ceramic discharge lamps
EP0528428A1 (en) * 1991-08-20 1993-02-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High-pressure discharge lamp and method of manufacture

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01302652A (en) * 1988-05-30 1989-12-06 Toshiba Lighting & Technol Corp Ceramic discharge lamp
JPH0215557A (en) * 1988-07-04 1990-01-19 Toshiba Lighting & Technol Corp High pressure sodium lamp
JPH06724B2 (en) * 1988-12-08 1994-01-05 田辺製薬株式会社 Naphthalene derivative

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2032277A1 (en) * 1970-06-25 1971-12-30 Egyesuelt Izzolampa Power supply construction for ceramic discharge lamps
EP0528428A1 (en) * 1991-08-20 1993-02-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High-pressure discharge lamp and method of manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9401884A1 *

Also Published As

Publication number Publication date
DE69331991D1 (en) 2002-07-11
JP3456212B2 (en) 2003-10-14
WO1994001884A1 (en) 1994-01-20
CA2139839A1 (en) 1994-01-20
EP0650184B1 (en) 2002-06-05
EP0650184A1 (en) 1995-04-26
KR100303570B1 (en) 2001-12-01
AU4514593A (en) 1994-01-31
DE69331991T2 (en) 2002-09-19

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