GB952600A - Improvements in low pressure mercury vapour discharge lamps - Google Patents

Improvements in low pressure mercury vapour discharge lamps

Info

Publication number
GB952600A
GB952600A GB41287/59A GB4128759A GB952600A GB 952600 A GB952600 A GB 952600A GB 41287/59 A GB41287/59 A GB 41287/59A GB 4128759 A GB4128759 A GB 4128759A GB 952600 A GB952600 A GB 952600A
Authority
GB
United Kingdom
Prior art keywords
bulb
electrode
electrodes
external diameter
distance
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
GB41287/59A
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of GB952600A publication Critical patent/GB952600A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/30Vessels; Containers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/70Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72Lamps 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

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

952,600. Discharge lamps. EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG. Dec. 4, 1959 [Dec. 6, 1958], No. 41287/59. Heading H1D. A low pressure mercury vapour discharge lamp, Fig. 1, has a circular cylindrical tubular bulb 1 containing rare gas and mercury, the inner surface of which is coated with fluorescent material and having at each end an electrode 10, 11 supported by lead-in conductors extending out of the end of a substantially cylindrical glass stem 8, 9, the electrodes being arranged at such a distance F from each other that the energy consumption of the lamp, operating at its rated voltage, exceeds 40 or 45 milliwatts per sq. cm. of the external surface area of the bulb between the electrodes, and at least one of the electrodes being at a distance t from the adjacent sealed end of the bulb which is at least 1.5 or 1.8 times the external diameter D of the bulb, the arrangement being such that a substantially unobstructed inner cross-section is provided inside the bulb for the passage of mercury vapour from the space between the electrodes towards the sealed end of the bulb. The distance t may be 3D. The cylindrical parts of the stems 8, 9 can have an external diameter d less than half the external diameter D of the bulb, preferably about one-third of D. Specific dimensions and energy consumptions are stated. Reference is made to a cold spot having a temperature of about 38-42‹ C. The rare gas filling can be 80% by volume of neon and 20% of argon at a pressure of about 2 Torr. Shields 10a, 11a are provided on two sides of each electrode 10, 11, which can be of the oxide-coated coiled-coil tungsten wire type. The exhaust tube 15 extends into the stem 9. In the construction shown in Fig. 2 the electrode 11 is contained in a perforated sheet-metal shield 14. In the construction shown in Fig. 3 the electrode 16 is positioned inside a metallic tube 17 welded to electrode-supporting wire 18, the tube 17 not touching the electrode-supporting wire 19.
GB41287/59A 1958-12-06 1959-12-04 Improvements in low pressure mercury vapour discharge lamps Expired GB952600A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE000596 1958-12-06

Publications (1)

Publication Number Publication Date
GB952600A true GB952600A (en) 1964-03-18

Family

ID=10995126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41287/59A Expired GB952600A (en) 1958-12-06 1959-12-04 Improvements in low pressure mercury vapour discharge lamps

Country Status (6)

Country Link
US (1) US2991386A (en)
BE (1) BE585322A (en)
CH (1) CH377936A (en)
DE (1) DE1816405U (en)
GB (1) GB952600A (en)
NL (1) NL246040A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169205A (en) * 1961-04-05 1965-02-09 Gen Electric Fluorescent lamp mount
NL280093A (en) * 1961-06-23
US3227907A (en) * 1962-12-31 1966-01-04 Sylvania Electric Prod Electric discharge lamp with integral pressure regulator
US3538370A (en) * 1968-08-27 1970-11-03 Tokyo Shibaura Electric Co Straight type fluorescent lamp having improved light output and exhibiting reduced blackening
JPS4819508B1 (en) * 1969-07-22 1973-06-14
CA969598A (en) * 1971-11-12 1975-06-17 Hitoshi Otsuka Fluorescent tube for lamp
CN113183602B (en) * 2021-04-28 2022-07-12 衡水华锘光电科技有限公司 Micro-diameter inner arc glass tube electrode finish coating tool

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272992A (en) * 1938-09-17 1942-02-10 Hebo Halfdan Generator for ultraviolet energy
US2279907A (en) * 1940-09-12 1942-04-14 Hygrade Sylvania Corp Electric discharge lamp
US2273960A (en) * 1941-04-10 1942-02-24 Jr Alfred Hopkin Fluorescent lamp
US2714681A (en) * 1948-08-27 1955-08-02 Gen Electric Electric discharge device
DE833084C (en) * 1951-06-05 1952-03-03 Lumalampan Ab Electric discharge tubes with fluorescent coating
US2919369A (en) * 1956-06-01 1959-12-29 Harold E Edgerton Flash tube and apparatus
US2906905A (en) * 1956-09-27 1959-09-29 Duro Test Corp Fluorescent lamp
US2930919A (en) * 1959-01-15 1960-03-29 Westinghouse Electric Corp Discharge device

Also Published As

Publication number Publication date
BE585322A (en) 1960-04-01
CH377936A (en) 1964-05-31
DE1816405U (en) 1960-08-11
US2991386A (en) 1961-07-04
NL246040A (en)

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