GB1378969A - Multi-digit glow indicator tube - Google Patents
Multi-digit glow indicator tubeInfo
- Publication number
- GB1378969A GB1378969A GB3398272A GB3398272A GB1378969A GB 1378969 A GB1378969 A GB 1378969A GB 3398272 A GB3398272 A GB 3398272A GB 3398272 A GB3398272 A GB 3398272A GB 1378969 A GB1378969 A GB 1378969A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- elements
- aperture
- glow
- plate
- 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
Links
- 239000002184 metal Substances 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000010406 cathode material Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 229910052754 neon Inorganic materials 0.000 abstract 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
- H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
- H01J17/491—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with electrodes arranged side by side and substantially in the same plane, e.g. for displaying alphanumeric characters
Landscapes
- Gas-Filled Discharge Tubes (AREA)
- Details Of Measuring Devices (AREA)
Abstract
1378969 Glow discharge display tubes MATSUSHITA ELECTRONICS CORP 20 July 1972 [20 July 1971 21 July 1971] 33982/72 Heading H1D A glow indicator tube comprises an envelope containing a gas atmosphere suitable for providing cathode glow; an insulating plate 41 within said envelope and having an aperture extending therethrough; a plurality of cathode elements, some 43, 44, 45 and 46 of which are disposed on the top surface of said insulating plate, and the remaining 32, 33, 34 and 35 of which are disposed on the bottom surface of said insulating plate, the cathode elements being, positioned so that their glow regions extend over the aperture of said insulating plate, the cathode elements being oriented to form a matrix of a character to be displayed, the cathode elements being adapted r be electrically connected in different combinations whereby each combination provides a different character representation, and at least one anode element 37 lying in the same stratum as the cathode elements 32, 33, 34 and 35 disposed on the bottom surface of said insulating plate, the anode element being spaced from all of the cathode elements but positioned in operative relation to cause the cathode elements to glow. The tube further comprises ceramic or mica insulating plates 16 and 52 each having an aperture in register with the aperture in plate 41, a mask plate 53 either of metal or of opaque insulating material having slits 55 to 61 forming a figure eight and a circular aperture 62, and a face plate 65 which is sealed to a base 12 provided with a tubulation for exhausting the tube and admitting a filling of neon or argon. An anode element 38 crosses a cathode element 46 beneath the decimal point aperture 52. If the plate 53 is of metal it is connected to a positive potential of less than 70% of that applied to the anode elements so as to trap shuttered cathode material and to act as a shield between the digits of the display. The cathode and anode elements originally extend from frame members (Figs. 3 and 4, not shown) which are removed when the tube is assembled. The tube may be mounted on a board (Figs. 7 and 8, not shown) and the ends of the cathode and anode elements bent down for connection to metal strips painted or sprayed on the top and bottom surfaces of the board.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5451471A JPS5235276B1 (en) | 1971-07-20 | 1971-07-20 | |
| JP5481071A JPS5223548B1 (en) | 1971-07-21 | 1971-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1378969A true GB1378969A (en) | 1975-01-02 |
Family
ID=26395265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3398272A Expired GB1378969A (en) | 1971-07-20 | 1972-07-20 | Multi-digit glow indicator tube |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3819975A (en) |
| CA (1) | CA954925A (en) |
| FR (1) | FR2146361B1 (en) |
| GB (1) | GB1378969A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2460803A1 (en) * | 1974-12-21 | 1976-09-30 | Bennes Marrel Sa | Lorry container handling equipment - swinging arm on lorry has ram operated lifting hook on its end |
| US4446400A (en) * | 1980-12-16 | 1984-05-01 | Cherry Electrical Products Corporation | Gaseous display panel with webbed anode |
| JPH04155734A (en) * | 1990-10-19 | 1992-05-28 | Nec Kagoshima Ltd | Fluorescent display tube |
| US5361079A (en) * | 1992-03-04 | 1994-11-01 | Nec Corporation | Connector for interconnecting a grid to a grid drive in a chip-in fluorescent display panel |
-
1972
- 1972-07-19 CA CA147,529A patent/CA954925A/en not_active Expired
- 1972-07-19 FR FR7225949A patent/FR2146361B1/fr not_active Expired
- 1972-07-20 GB GB3398272A patent/GB1378969A/en not_active Expired
- 1972-07-20 US US00273492A patent/US3819975A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE2235709B2 (en) | 1975-12-04 |
| DE2235709A1 (en) | 1973-01-25 |
| US3819975A (en) | 1974-06-25 |
| CA954925A (en) | 1974-09-17 |
| FR2146361A1 (en) | 1973-03-02 |
| FR2146361B1 (en) | 1975-10-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PE20 | Patent expired after termination of 20 years |