• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Cathode unit intended for use in a fluorescent tube and designed in such a way that the service life of the tube is increased markedly as a result of a reduction in the loss of emmission material from the cathod (3). These material losses are caused by, inter alia, ion bombardment and by vaporization of the emission material. In order to achieve a marked increase in the reflection of released ions and molecules back to cathod surface, both ions and molecules which have been released through ion bombardment a ions and molecules which have been released vaporized from the cathod surface, the cathode (3) is surrounded by an electrically conductive cathode shield (6) in the form of a box-shaped casing which is, however, electrically insulated from the cathod. A opening (8) is made in the bottom of the shield for inserting the cathod (3). The open end of the shield (6) is sealed by means of a disc (9), preferably made of mica and provided with a centrally located hole (19). The hole diameter of the mica disc (9) should be selected so that it is as small as possible while bearing in mind the fact that the starting voltage for the tube should not exceed a predetermined value. The opening (8) in the bottom of the shield (6) should be of at least the same area as the hole in the mica disc (9).
    公开号:SU1218936A3
    申请号:SU813315649
    申请日:1981-07-06
    公开日:1986-03-15
    发明作者:Бьеркман Оке
    申请人:Лумалампан Актиеболаг；
    IPC主号:
    专利说明:

    one
    The invention relates to a cathode assembly for fluorescent lamps having a cathode fixedly fixed to the lamp wall and surrounded by a cathode screen made of electrically conductive material and not electrically connected to the cathode.
    The aim of the invention is to increase the service life of fluorescent lamps.
    FIG. 1 shows one end of a fluorescent lamp equipped with a cathode assembly; a section f in FIG. 2 - cathode screen, vertical section; in fig. 3 is the same, bottom view, in FIG. 4 is a mica disc for covering the open end of the case, plan view, in FIG. 5 is a graph of starting voltage dependences. Both and the degree of blackening 5 on the diameter of the opening of the mica disc.
    The glass wall 1 of the lamp, with its one end, is sealed with a foot which simultaneously serves as the basis for the cathode supports 3 carrying the cathode of the lamp. Cathode supports made of electrically conductive material are connected to power wires 5, which are fed into leg 2, through which current is passed through cathode 4 to heat the latter. The cathode 4 is surrounded by a cathode screen 6, preferably made of iron or nickel. The screen 5 is fixed with a bracket 7, sunk into the leg 2, and electrically isolated from the cathode 4.
    The cathode screen (Fig. 2 and h) 6 has the shape of a box, in the bottom of which an oblong hole 8 is made to insert the cathode 4 and part of the cathode supports 3. The open end of the cathode screen 6 is closed with a mica disc 9, preferably 0.10-1 thick, 15 mm, Mica disc 9 of FIG. 4) it has a central hole 10, prior respectfully round, with a diameter of 10-12 mm for ordinary fluorescent lamps with a tube diameter of 38 mm. A smaller diameter reduces the blackening of the inner part of the tube wall, but at the same time increases the starting voltage to an unacceptable level (see Fig. 5, which shows the starting voltage U in volts, as well as the relative blackening
    2189362
    B depending on the diameter of the D (MM) hole 10). The larger diameter of the hole reduces the starting voltage - to a small extent, but
    J significantly increases the blackening of the lamp.
    The disk 9 should be made of mica or other electrically insulating material that does not emit gas, since ion bombardment when executing the disk, for example, iron, leads to an additional amount of material sprayed, which increases
    (5 blackening of the lamp wall.
    Since the discharge must pass through the mica disc 9, which has an opening near the cathode 4, which performs the function of the anode, it has reached
    20, a pronounced increase in the electron density, thereby reducing the anodic voltage drop, which leads to a decrease in cathode temperature and evaporation rate. 25 The lamp is pumped out, combining vacuum pumping with an internal pumping pump, which is achieved when droplets of mercury hit the hot tube. A droplet of this type is shown schematically at 11 in FIG. 1. When a droplet hits a hot fluorescent lamp (wall 1 and / or leg 2, it instantly evaporates, and the resulting mercury vapor quickly goes away.
     The arrows 12 and 13. show the most important contours of the outflow of vapor. Mercury vapor following the contour indicated by arrow 13 should not be restrained by the structure formed by the cathode screen 6 and the mica disc 9 if it is necessary to achieve effective carbon dioxide ejection. . on the emission layer and resulting from the conversion of carbonates to oxides. For this reason, the diameter of the hole 10 in the mica disc 9 should exceed 10 mm (for a fluorescent lamp with a diameter of
    50 tubes 38 mm), and the hole 8 in the bottom of the cathode screen 6 must have an area equal to (preferably large) area ..,; mica disc holes.
    55 Application of the invention allows to increase the service life of the cathode. 3-4 times in cases of normal duration of inclusion (W h).
    thirty
    40
    45
    6

    9
    1000



    Sh
    Compiled by V.Gorchanov- Editor-L.Vesepovska Tehred T.Tulik. Proofreader I. Erjeyi
    Order 1141/63
    Circulation 644Subscribe
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Branch ShSh Patent, Uzhgorod, st. Project, 4
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    权利要求:
    Claims (1)
    [1]
    CATHODE UNIT FOR LUMINESCENT LAMPS, containing a heated cathode, fixedly mounted on the base relative to the lamp wall and surrounded by a box screen containing a casing of electrically conductive material, formed by the wall and the bottom, not electrically connected to the cathode and closed from the side of the open end located in the discharge space against the cathode, a disk of insulating material having a Central hole, characterized in that, in order to increase the service life, the hole in it has a diameter of As high as 26-32% of the diameter of the lamp, the bottom of the casing faces the base and has a hole, the area of which is equal to the area of the hole in the disk.
    SU .. „1218936
    类似技术:
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    EP0577275A1|1994-01-05|Fluorescent lamp
    US1949545A|1934-03-06|Mercury arc
    US2115147A|1938-04-26|Electrical discharge device
    同族专利:
    公开号 | 公开日
    IT8025764D0|1980-11-04|
    SE435332B|1984-09-17|
    DE3041548C2|1986-07-24|
    AU6570480A|1981-05-22|
    ATA547480A|1984-07-15|
    AU543221B2|1985-04-04|
    DE8029380U1|1982-07-15|
    RO81624A|1984-05-12|
    HU181318B|1983-07-28|
    BE886030A|1981-03-02|
    MX147322A|1982-11-10|
    ES263202Y|1985-12-16|
    CH649653A5|1985-05-31|
    WO1981001344A1|1981-05-14|
    YU39696B|1985-03-20|
    CS250206B2|1987-04-16|
    BR8008906A|1981-08-25|
    IT1134172B|1986-07-31|
    PT72017B|1981-12-17|
    AT377385B|1985-03-11|
    RO81624B|1984-08-25|
    DK158177B|1990-04-02|
    PT72017A|1980-12-01|
    DK158177C|1990-09-03|
    YU283980A|1983-06-30|
    JPS56501507A|1981-10-15|
    JPH0250582B2|1990-11-02|
    DK296081A|1981-07-03|
    DE3041548A1|1981-05-21|
    CA1150340A|1983-07-19|
    ES263202U|1982-12-01|
    PL132221B1|1985-02-28|
    FR2473785A1|1981-07-17|
    NO812294L|1981-07-06|
    FI812128L|1981-07-06|
    NO153946B|1986-03-10|
    NO153946C|1986-06-18|
    FI68928B|1985-07-31|
    FR2473785B1|1985-03-08|
    SE7909213L|1981-05-08|
    GB2077033B|1984-07-04|
    FI68928C|1985-11-11|
    GB2077033A|1981-12-09|
    PL227738A1|1981-08-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2505744C2|2012-03-06|2014-01-27|Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук |Electric lighting system |US2008066A|1933-02-17|1935-07-16|Quarzlampen Gmbh|Gas or vapor discharge tube|
    US2238277A|1940-02-09|1941-04-15|Miller Maurice|Combination tube closure and electrode for neon tubes|
    US2725497A|1951-04-25|1955-11-29|Westinghouse Electric Corp|Floating grids for fluorescent lamps|
    DE955341C|1952-01-13|1957-01-03|Physikalisch Tech Werkstaetten|Gas discharge tubes with a screen enclosing the cathode in a pot-shaped manner|
    FR1110434A|1954-08-31|1956-02-13|Hyperion Sa|Improvements to the electrodes of the discharge tubes|
    US2917650A|1955-06-29|1959-12-15|Hyperion Sa|Electrode for discharge tubes|
    GB841343A|1957-10-09|1960-07-13|Philips Electrical Ind Ltd|Improvements in or relating to low-pressure mercury vapour discharge tubes|
    FR1271505A|1959-05-11|1961-09-15|Lampes Sa|Low pressure discharge device|
    US3121184A|1960-12-30|1964-02-11|Gen Electric|Discharge lamp with cathode shields|
    NL6514352A|1965-11-05|1967-05-08|
    US3390297A|1966-07-01|1968-06-25|Perkin Elmer Corp|Shield for hollow cathode lamps|
    US3430359A|1967-02-09|1969-03-04|Roll O Sheets|Apparatus with heat conductive belt|
    GB1219705A|1968-05-10|1971-01-20|Hitachi Ltd|Light source lamp for atomic light absorption analysis|EP0555619B1|1992-02-13|1996-05-22|Luminova Aktiebolag|Cathode screen for gas discharge lamps|
    US6384534B1|1999-12-17|2002-05-07|General Electric Company|Electrode material for fluorescent lamps|
    SE515637C2|2000-01-24|2001-09-17|Auralight Ab|Security structure for fluorescent lamps|
    US6741023B2|2001-07-10|2004-05-25|Light Sources, Inc.|Fluorescent tanning lamp with improved service life|
    SE524397C2|2002-04-11|2004-08-03|Auralight Int Ab|Cathode unit for fluorescent lamps and method for manufacturing fluorescent lamps|
    US6812639B2|2002-09-13|2004-11-02|Light Sources, Inc.|Germicidal lamp with end of life arc quenching device|
    US6809468B1|2002-12-11|2004-10-26|Light Sources, Inc.|Cathode with disintegration shield in a gas discharge lamp|
    DE10334175B4|2003-07-26|2006-09-21|Dei-Anang, Kwesi, Priv.-Doz. Dr.med.|Respirator|
    JP2008204856A|2007-02-21|2008-09-04|Nec Lighting Ltd|Thermoionic cathode fluorescent lamp|
    JP6691317B2|2015-10-06|2020-04-28|ウシオ電機株式会社|Short arc type discharge lamp|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7909213A|SE435332B|1979-11-07|1979-11-07|CATHOD UNIT OF LIGHT|
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