Filament support assembly for display device

Details Filament support assembly for display device Filament support assembly for display device

1978-08-25

1981-01-06

Demeo, Palmer C.

Electric lamp and discharge devices

With character display

Incandescent filament display

H01K 118, H01K 704

Patent

active

042439108

ABSTRACT:
In a display lamp wherein at least three parallel filaments for horizontal lines and at least four filaments for vertical lines coupling the ends of the horizontal-line filaments are arrayed in the shape of a character "` `" and are switched on or off selectively to indicate a digit, mark, letter or symbol, twelve electrode plates are welded individually to twelve leadwires constituting a stem of a display unit. The electrode plates are so pre-arranged that the ends of the horizontal-line filaments and the ends of the vertical-line filaments connected between the electrode plates are superposed exactly on each other in a nomral to the fireplate or the display lamp direction with the horizontal and vertical filaments being respectively displaced at different levels to be in non-contacting relationship.

REFERENCES:
patent: 3408523 (1968-10-01), Demarest et al.
patent: 3604971 (1971-09-01), Tracy
patent: 3743880 (1973-07-01), Demarest

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