EP0942456A3 - Mercury and lead free high pressure sodium lamp - Google Patents

Mercury and lead free high pressure sodium lamp Download PDF

Info

Publication number
EP0942456A3
EP0942456A3 EP99103825A EP99103825A EP0942456A3 EP 0942456 A3 EP0942456 A3 EP 0942456A3 EP 99103825 A EP99103825 A EP 99103825A EP 99103825 A EP99103825 A EP 99103825A EP 0942456 A3 EP0942456 A3 EP 0942456A3
Authority
EP
European Patent Office
Prior art keywords
lead
mercury
free
high pressure
outer envelope
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
EP99103825A
Other languages
German (de)
French (fr)
Other versions
EP0942456A2 (en
EP0942456B1 (en
Inventor
Robert B. Dolan
John L. Plumb
Elliot F. Wyner
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 Sylvania Inc
Original Assignee
Osram Sylvania 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
Priority claimed from US09/244,252 external-priority patent/US6268696B1/en
Application filed by Osram Sylvania Inc filed Critical Osram Sylvania Inc
Publication of EP0942456A2 publication Critical patent/EP0942456A2/en
Publication of EP0942456A3 publication Critical patent/EP0942456A3/en
Application granted granted Critical
Publication of EP0942456B1 publication Critical patent/EP0942456B1/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
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/825—High-pressure sodium lamps
    • 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
    • H01J5/62—Connection of wires protruding from the vessel to connectors carried by the separate part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/22—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent vapour of an alkali metal
    • 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
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

A long-life, environmentally disposable high pressure sodium lamp comprising: an arc tube capable of withstanding internal wall temperatures of 1250 to 1300°C and having electrodes sealed therein and being designed for operation at a given wattage; a discharge space within the arc tube and an arc generating and sustaining medium within the discharge space, the medium being mercury-free and containing sodium in an amount of about 0.02 mg to 0.06 mg/watt of designed operation, and xenon at a pressure of 100 to 200 Torr; mounting means supporting the arc tube within a glass outer envelope, the glass outer envelope being lead-free and arsenic-free; and an electrically conductive base closing the outer envelope and containing lead-in wires affixed to the electrodes, the lead-in wires being attached to the base by welding.
EP99103825A 1998-03-12 1999-02-27 Mercury and lead free high pressure sodium lamp Expired - Lifetime EP0942456B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US7769898P 1998-03-12 1998-03-12
US77698P 1998-03-12
US244252 1999-02-03
US09/244,252 US6268696B1 (en) 1999-02-03 1999-02-03 Mercury and lead free high pressure sodium lamp

Publications (3)

Publication Number Publication Date
EP0942456A2 EP0942456A2 (en) 1999-09-15
EP0942456A3 true EP0942456A3 (en) 1999-09-29
EP0942456B1 EP0942456B1 (en) 2004-08-04

Family

ID=26759571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103825A Expired - Lifetime EP0942456B1 (en) 1998-03-12 1999-02-27 Mercury and lead free high pressure sodium lamp

Country Status (5)

Country Link
EP (1) EP0942456B1 (en)
JP (1) JPH11288692A (en)
CA (1) CA2261380A1 (en)
DE (1) DE69919056T2 (en)
HU (1) HU222332B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07272680A (en) * 1994-03-31 1995-10-20 Toshiba Lighting & Technol Corp Ceramic discharge lamp, lamp lighting device, and illumination fixture
EP0790639A1 (en) * 1996-01-22 1997-08-20 Matsushita Electric Works Ltd High pressure sodium vapor lamp with high color rendering
US5682082A (en) * 1996-07-29 1997-10-28 Osram Sylvania Inc. Translucent polycrystalline alumina and method of making same
WO1998055413A1 (en) * 1997-06-02 1998-12-10 Osram-Sylvania Inc. Lead and arsenic free borosilicate glass and lamp containing same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2615470C2 (en) 2012-03-26 2017-04-04 Волаком Ад System to avoid collision with animals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07272680A (en) * 1994-03-31 1995-10-20 Toshiba Lighting & Technol Corp Ceramic discharge lamp, lamp lighting device, and illumination fixture
EP0790639A1 (en) * 1996-01-22 1997-08-20 Matsushita Electric Works Ltd High pressure sodium vapor lamp with high color rendering
US5682082A (en) * 1996-07-29 1997-10-28 Osram Sylvania Inc. Translucent polycrystalline alumina and method of making same
WO1998055413A1 (en) * 1997-06-02 1998-12-10 Osram-Sylvania Inc. Lead and arsenic free borosilicate glass and lamp containing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 096, no. 002 29 February 1996 (1996-02-29) *

Also Published As

Publication number Publication date
HU222332B1 (en) 2003-06-28
EP0942456A2 (en) 1999-09-15
CA2261380A1 (en) 1999-09-12
EP0942456B1 (en) 2004-08-04
DE69919056T2 (en) 2004-12-30
HUP9900559A2 (en) 1999-10-28
HU9900559D0 (en) 1999-05-28
DE69919056D1 (en) 2004-09-09
JPH11288692A (en) 1999-10-19
HUP9900559A3 (en) 2001-04-28

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