Multi-digit fluorescent indicating apparatus
AssigneeFutaba Denshi Kogyo K.K.
InventorTakao Kishino
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Abstract
A multi-digit fluorescent indicating apparatus and a manufacturing method therefor are disclosed. The indicating apparatus includes an enclosure, formed by sealing a base plate and an upper surface window plate together, and containing one or more segmented electrodes of fluorescent material coated on the base plate. In the manufacturing method, various lead-in wires for grids and cathodes as well as spacers for grids are formed from a single metal plate, facilitating easy connection to external circuits and improving compactness lightness and reliability as well as reducing manufacturing costs.
Claims2
A multi-digit fluorescent indicating apparatus comprising:
- a base plate;
- a window plate hermetically sealed to said base plate forming an evacuated enclosure;
- segmented electrode means forming each of multi-digit fluorescent indicating patterns disposed on said base plate within said enclosure;
- a plurality of grid terminal lead-in wires with each grid terminal lead-in wire extending integrally substantially inside and substantially outside of the enclosure;
- a spacer element disposed within the enclosure and integrally connected to each of said grid terminal lead-in wires;
- a grid disposed within the enclosure and secured to each of said spacer elements;
- a plurality of cathode terminal lead-in wires with each cathode terminal lead-in wire extending integrally substantially inside and substantially outside of the enclosure;
- a cathode holding portion disposed within the enclosure and integrally connected to each of said cathode terminal lead-in wires;
- a cathode disposed within the enclosure and connected to said cathode holding portion;
- said grid terminal lead-in wires and said cathode terminal lead-in wires providing convenient external electrical connections.
Dependencies are inferred from the claim text.