GB854388A - Improvements in or relating to low pressure mercury vapour electric discharge lamps - Google Patents

Improvements in or relating to low pressure mercury vapour electric discharge lamps

Info

Publication number
GB854388A
GB854388A GB48558A GB48558A GB854388A GB 854388 A GB854388 A GB 854388A GB 48558 A GB48558 A GB 48558A GB 48558 A GB48558 A GB 48558A GB 854388 A GB854388 A GB 854388A
Authority
GB
United Kingdom
Prior art keywords
tube
foot
lamp
diameter
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.)
Expired
Application number
GB48558A
Inventor
Derek Charles Peach
Charles Edington Williams
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB48558A priority Critical patent/GB854388A/en
Priority to DEG19206U priority patent/DE1794813U/en
Publication of GB854388A publication Critical patent/GB854388A/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
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

854,388. Metal-vapour lamps. GENERAL ELECTRIC CO. Ltd. Jan. 6, 1959 [Jan. 6, 1958], No. 485/58. Class 39(1). In order to maintain a region of a discharge lamp sufficiently cool to allow mercury vapour to condense, the dimensions of the foot-tube 6 are varied until a temperature not exceeding 43‹C. at the end of foot-tube 6 is achieved when the ambient air temperature is 25‹C., and the lamp is working at its rated wattage of 80 or 125 watts. The diameter of foot-tube 6 which is flanged and sealed to the envelope part 1, must not be less than # of that of the larger tube section and may by 2/5 or 2/3 of that diameter, the foot-tube lengths varying in accordance with the length of the envelope and the foottube diameter. Shielding means may be used in the lamp to restrict heat transfer to the end of foot-tube such as a disc 11, or indentations in the lamp envelope. The lamp has a gas filling of argon and neon mixture, or neon alone at 2À9 mms. of Hg.
GB48558A 1958-01-06 1958-01-06 Improvements in or relating to low pressure mercury vapour electric discharge lamps Expired GB854388A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB48558A GB854388A (en) 1958-01-06 1958-01-06 Improvements in or relating to low pressure mercury vapour electric discharge lamps
DEG19206U DE1794813U (en) 1958-01-06 1959-01-07 ELECTRIC MERCURY - LOW PRESSURE DISCHARGE LAMP.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB48558A GB854388A (en) 1958-01-06 1958-01-06 Improvements in or relating to low pressure mercury vapour electric discharge lamps

Publications (1)

Publication Number Publication Date
GB854388A true GB854388A (en) 1960-11-16

Family

ID=9705166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48558A Expired GB854388A (en) 1958-01-06 1958-01-06 Improvements in or relating to low pressure mercury vapour electric discharge lamps

Country Status (1)

Country Link
GB (1) GB854388A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270176B (en) * 1961-06-23 1968-06-12 Westinghouse Electric Corp Low pressure mercury vapor fluorescent lamp
US5091488A (en) * 1984-11-30 1992-02-25 Director-General Of Agency Of Industrial Science And Technology Polyethylacetylene derivative and process for preparation thereof
WO2012136448A1 (en) * 2011-04-04 2012-10-11 Osram Ag Discharge lamp, in particular low-pressure mercury discharge lamp
EP3267466A1 (en) * 2016-07-08 2018-01-10 Xylem IP Management S.à.r.l. Uv mercury low-pressure lamp with amalgam deposit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270176B (en) * 1961-06-23 1968-06-12 Westinghouse Electric Corp Low pressure mercury vapor fluorescent lamp
US5091488A (en) * 1984-11-30 1992-02-25 Director-General Of Agency Of Industrial Science And Technology Polyethylacetylene derivative and process for preparation thereof
WO2012136448A1 (en) * 2011-04-04 2012-10-11 Osram Ag Discharge lamp, in particular low-pressure mercury discharge lamp
EP3267466A1 (en) * 2016-07-08 2018-01-10 Xylem IP Management S.à.r.l. Uv mercury low-pressure lamp with amalgam deposit
WO2018007578A1 (en) * 2016-07-08 2018-01-11 Xylem Ip Management S.À R.L. Uv mercury low-pressure lamp with amalgam deposit
US10593536B2 (en) 2016-07-08 2020-03-17 Xylem Ip Management S.À R.L. UV mercury low-pressure lamp with amalgam deposit

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