US3723789A - Flat composite fluorescent display tube - Google Patents

Flat composite fluorescent display tube Download PDF

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Publication number
US3723789A
US3723789A US00096025A US3723789DA US3723789A US 3723789 A US3723789 A US 3723789A US 00096025 A US00096025 A US 00096025A US 3723789D A US3723789D A US 3723789DA US 3723789 A US3723789 A US 3723789A
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US
United States
Prior art keywords
display
electrode
filament
display members
segments
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 - Lifetime
Application number
US00096025A
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English (en)
Inventor
M Tanji
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.)
Noritake Itron Corp
Original Assignee
Ise Electronics 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 Ise Electronics Corp filed Critical Ise Electronics Corp
Application granted granted Critical
Publication of US3723789A publication Critical patent/US3723789A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/313—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being gas discharge devices

Definitions

  • Still further object of this invention is to provide an improved composite fluorescent display tube having a plurality of electrode structures, each including a letter forming electrode and a control grid interconnected by a frame electrode that functions as a shield for preventing electrons accelerated by the control grid from reaching adjacent display members or electrode struc.- tures thus eliminating the necessity of providing shields between adjacent display members.
  • the fluorescent display tube is provided with a cathode filament in front of the display member and in parallel with the surface thereof.
  • the mounting of the cathode electrode of the novel composite fluorescent display tube is shown in FIGS. 2 and 5.
  • electroconductive filament supports are secured on the substrate. More particularly, as shown in FIG. 5, support 6a is secured on the substrate 1 in front of the first electrode assembly 4a and is connected to a terminal 9a extending through substrate 1.
  • Another support 8a is provided in front of the second and third electrode assemblies 4b and 40 so as to bridge them.
  • a support 8b is secured in front of the third and fourth elec trode assemblies 4d and 4e to bridge them, and so on.
  • a support 6b similar to support 6a is secured to the substrate in front of the right most electrode assembly 4j and the support 6b is connected to a terminal 9b, similarly extending through the substrate.
  • Resilient electroconductive supports 7a to 7e (made of leaf springs, for example) are secured to the rear of electrode assemblies 4a to 4j, each bridging two adjacent electrode assemblies. Each end of respective supports 7a to 7c terminates at substantially the midpoint of the associated electrode assembly for the reason to be described later.
  • the cathode filament is mounted on these supports in the following manner.
  • filaments 10a to l0e for 10 display members are comprised by five filament segments 10a through l0e.
  • the mounting means of these filament segments upon respective supports are identical, the mounting means of segment 10a alone will be described in detail.
  • one end of filament segment 10a is welded to the upper end of support 60 and is then bent around the outer surface of resilient support 7a.
  • the opposite end of filament segment 10a is welded to support 8a as shown in FIG. 2. This weld is made while the filament segment 10a is slightly bent about resilient support so as to maintain filament segment 10a under tension by the restoring force of the resilient support 7a.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
US00096025A 1969-12-13 1970-12-08 Flat composite fluorescent display tube Expired - Lifetime US3723789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44099882A JPS4812668B1 (enrdf_load_stackoverflow) 1969-12-13 1969-12-13

Publications (1)

Publication Number Publication Date
US3723789A true US3723789A (en) 1973-03-27

Family

ID=14259155

Family Applications (1)

Application Number Title Priority Date Filing Date
US00096025A Expired - Lifetime US3723789A (en) 1969-12-13 1970-12-08 Flat composite fluorescent display tube

Country Status (6)

Country Link
US (1) US3723789A (enrdf_load_stackoverflow)
JP (1) JPS4812668B1 (enrdf_load_stackoverflow)
DE (1) DE2061187C3 (enrdf_load_stackoverflow)
FR (1) FR2073638A5 (enrdf_load_stackoverflow)
GB (1) GB1326047A (enrdf_load_stackoverflow)
SE (1) SE365342B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864593A (en) * 1972-05-23 1975-02-04 Ise Electronics Corp Flat fluorescent letter display tubes
US3872346A (en) * 1972-07-20 1975-03-18 Takao Kunii Character display discharge tube
US3958150A (en) * 1973-07-31 1976-05-18 Nippon Electric Kagoshima, Ltd. Multi-digit luminescence display tube having means for supplying a positive or zero voltage to a selected grid to suppress luminescence of anode segments covered thereby
US4047074A (en) * 1975-11-22 1977-09-06 Futaba Denshi Kogyo Kabushiki Kaisha Multi-digit fluorescent display tube with cathode filament support
US4410830A (en) * 1981-03-03 1983-10-18 Edison International Inc. Vacuum fluorescent display device with substrate including a metal plate
US4542317A (en) * 1981-12-19 1985-09-17 Futaba Denshi Kogyo K.K. Fluorescent display tube
US4658186A (en) * 1983-12-27 1987-04-14 Sanyo Electric Co. Control apparatus for fluorescent display tube
US20070275620A1 (en) * 2004-09-14 2007-11-29 Koninklijke Philips Electronics, N.V. Electro-Optic Fibre or Filament

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1108786A (en) * 1977-11-14 1981-09-08 Richard Dubois Integrated display device
GB2031220B (en) * 1978-10-04 1983-01-06 English Electric Valve Co Ltd Evacuated display tubes
JPS5576085A (en) * 1978-12-05 1980-06-07 Isomura Housui Kiko Kk Producing apparatus of sodium hypochlorite
JPS5592109A (en) * 1979-01-08 1980-07-12 Hashimoto Sangyo Kk Bubble separator in liquid
DE2936316C2 (de) * 1979-09-08 1982-02-18 Standard Elektrik Lorenz Ag, 7000 Stuttgart Vakuumfluoreszenzanzeige.
DE3004648C2 (de) * 1980-02-08 1982-05-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Vakuum-Anzeigevorrichtung
JP2003051276A (ja) * 2001-08-07 2003-02-21 Futaba Corp 蛍光発光管

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538669A (en) * 1940-12-02 1951-01-16 Hartford Nat Bank & Trust Co Electron tube system of the velocity modulation type
US2908842A (en) * 1957-02-25 1959-10-13 Telefunken Gmbh Filament tensioning
US3330982A (en) * 1964-08-14 1967-07-11 Sylvania Electric Prod Hermetically encased electroluminescent display device
US3408523A (en) * 1966-05-06 1968-10-29 Ohmega Lab Light bulb with a plurality of independently connected filaments for indicating graphic symbols
US3418509A (en) * 1965-07-03 1968-12-24 Philips Corp Electrical discharge character indicator tube
US3571655A (en) * 1967-12-12 1971-03-23 Sharp Kk Electronic indicia display system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538669A (en) * 1940-12-02 1951-01-16 Hartford Nat Bank & Trust Co Electron tube system of the velocity modulation type
US2908842A (en) * 1957-02-25 1959-10-13 Telefunken Gmbh Filament tensioning
US3330982A (en) * 1964-08-14 1967-07-11 Sylvania Electric Prod Hermetically encased electroluminescent display device
US3418509A (en) * 1965-07-03 1968-12-24 Philips Corp Electrical discharge character indicator tube
US3408523A (en) * 1966-05-06 1968-10-29 Ohmega Lab Light bulb with a plurality of independently connected filaments for indicating graphic symbols
US3571655A (en) * 1967-12-12 1971-03-23 Sharp Kk Electronic indicia display system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864593A (en) * 1972-05-23 1975-02-04 Ise Electronics Corp Flat fluorescent letter display tubes
US3872346A (en) * 1972-07-20 1975-03-18 Takao Kunii Character display discharge tube
US3958150A (en) * 1973-07-31 1976-05-18 Nippon Electric Kagoshima, Ltd. Multi-digit luminescence display tube having means for supplying a positive or zero voltage to a selected grid to suppress luminescence of anode segments covered thereby
US4047074A (en) * 1975-11-22 1977-09-06 Futaba Denshi Kogyo Kabushiki Kaisha Multi-digit fluorescent display tube with cathode filament support
US4410830A (en) * 1981-03-03 1983-10-18 Edison International Inc. Vacuum fluorescent display device with substrate including a metal plate
US4542317A (en) * 1981-12-19 1985-09-17 Futaba Denshi Kogyo K.K. Fluorescent display tube
US4658186A (en) * 1983-12-27 1987-04-14 Sanyo Electric Co. Control apparatus for fluorescent display tube
US20070275620A1 (en) * 2004-09-14 2007-11-29 Koninklijke Philips Electronics, N.V. Electro-Optic Fibre or Filament

Also Published As

Publication number Publication date
GB1326047A (en) 1973-08-08
DE2061187B2 (de) 1975-05-22
DE2061187A1 (de) 1971-07-08
JPS4812668B1 (enrdf_load_stackoverflow) 1973-04-21
DE2061187C3 (de) 1976-01-02
SE365342B (enrdf_load_stackoverflow) 1974-03-18
FR2073638A5 (enrdf_load_stackoverflow) 1971-10-01

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