GB1439045A - Cermaic discharge lamps - Google Patents

Cermaic discharge lamps

Info

Publication number
GB1439045A
GB1439045A GB4242273A GB4242273A GB1439045A GB 1439045 A GB1439045 A GB 1439045A GB 4242273 A GB4242273 A GB 4242273A GB 4242273 A GB4242273 A GB 4242273A GB 1439045 A GB1439045 A GB 1439045A
Authority
GB
United Kingdom
Prior art keywords
frame
arc tube
sodium
metal
sept
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.)
Expired
Application number
GB4242273A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1439045A publication Critical patent/GB1439045A/en
Expired 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
    • H01J61/50—Auxiliary parts or solid material within the envelope for reducing risk of explosion upon breakage of the envelope, e.g. for use in mines

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1439045 Metal-vapour lamps WESTING- HOUSE ELECTRIC CORP 10 Sept 1973 [22 Sept 1972] 42422/73 Heading H1D A frame 24 supporting a sodium containing ceramic arc tube 26 in an outer vitreous lamp envelope 14 is made of an electrically conducting non-photoelectron emissive material to prevent a negative charge accumulating on the outer surface of the wall 28 of the arc tube 26 and leading to dendritic cracking of the wall with resulting loss of sodium. The preferred material is stainless steel coated with chrome oxide. Alternative material are stainless steel, chrome iron, tantalum clad Ni and Fe, Ti, or any metal coated with Pt or Au. In addition, the side members of the frame 24 may-be surrounded by tubes 46, 48 of alumina or fused quartz for part of the whole of their lengths to prevent barium from gettens 38 depositing on the wire of the frame, and electron interceptors 50 may be located between the arc tube 26 and the frame 24 and connected so as to be always at the opposite potential to the frame. The arc tube 26 may contain an inert gas and mercury in addition to sodium and the lamp is completed by a metal base 12. (For Figure see next column.)
GB4242273A 1972-09-22 1973-09-10 Cermaic discharge lamps Expired GB1439045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29148972A 1972-09-22 1972-09-22

Publications (1)

Publication Number Publication Date
GB1439045A true GB1439045A (en) 1976-06-09

Family

ID=23120505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4242273A Expired GB1439045A (en) 1972-09-22 1973-09-10 Cermaic discharge lamps

Country Status (10)

Country Link
US (1) US3780331A (en)
JP (1) JPS5245431B2 (en)
BE (1) BE805060A (en)
CA (1) CA984441A (en)
DE (1) DE2346132A1 (en)
ES (1) ES418972A1 (en)
FR (1) FR2200617B1 (en)
GB (1) GB1439045A (en)
IT (1) IT995463B (en)
NL (1) NL7313047A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878421A (en) * 1974-01-31 1975-04-15 Atlantic Ultraviolet Corp High intensity ultraviolet lamp and method for producing the same
US4037128A (en) * 1975-09-12 1977-07-19 Izrail Aronovich Levin Three-phase discharge lamp
US4333032A (en) * 1978-09-25 1982-06-01 Gte Products Corporation High pressure sodium lamp containing barium getter
US4281274A (en) * 1979-08-01 1981-07-28 General Electric Co. Discharge lamp having vitreous shield
HU183876B (en) * 1982-04-02 1984-06-28 Egyesuelt Izzolampa Metal halogenid lamp
JPS59214154A (en) * 1983-05-18 1984-12-04 Matsushita Electronics Corp Glow switch
US4963790A (en) * 1985-12-27 1990-10-16 Gte Products Corporation Low wattage metal halide discharge lamp
HU205485B (en) * 1986-10-20 1992-04-28 Tungsram Reszvenytarsasag Metal halogen discharge lamp containing alkali-halogenide additive
US4866328A (en) * 1988-04-15 1989-09-12 North American Philips Corp. Electric lamp with reduced internal photoelectron production
DE9002959U1 (en) * 1990-03-15 1990-05-17 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
US5272407A (en) * 1991-12-18 1993-12-21 North American Philips Corporation Electric lamp having screens for reducing photo electron emission
JP4643878B2 (en) * 1999-11-22 2011-03-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ High pressure discharge lamp
US20090015162A1 (en) * 2003-06-30 2009-01-15 Koninklijke Philips Electronics N.V. Electric Lamp Having Strapless Support Mount for Mh Arc Tubes
DE102005038551B3 (en) * 2005-08-12 2007-04-05 W.C. Heraeus Gmbh Wire and frame for single-ended lamps based on niobium or tantalum, as well as manufacturing process and use
SE0701251L (en) * 2007-05-24 2008-09-09 Auralight Int Ab High-pressure sodium lamp
DE102007046899B3 (en) * 2007-09-28 2009-02-12 W.C. Heraeus Gmbh Halogen metal vapor lamp comprises a ceramic housing and a current feed-through arranged in the ceramic housing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6703447A (en) * 1967-03-03 1968-09-04
GB1223955A (en) * 1969-05-16 1971-03-03 Narva Veb High pressure electric discharge lamp
JPS4713360U (en) * 1971-03-09 1972-10-17
JPS4825985A (en) * 1971-08-10 1973-04-04

Also Published As

Publication number Publication date
CA984441A (en) 1976-02-24
US3780331A (en) 1973-12-18
BE805060A (en) 1974-03-20
FR2200617A1 (en) 1974-04-19
NL7313047A (en) 1974-03-26
FR2200617B1 (en) 1977-10-14
ES418972A1 (en) 1976-07-01
JPS5245431B2 (en) 1977-11-16
DE2346132A1 (en) 1974-03-28
IT995463B (en) 1975-11-10
JPS4976359A (en) 1974-07-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee