Display device with disk and LED

Details Display device with disk and LED Display device with disk and LED

1996-07-19

1998-06-30

Stryjewski, William

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Alphanumeric device

40449, 340484, 340485, 340930, G09F 304

Patent

active

057716161

ABSTRACT:
A display element has a disk which rotates on an axis to show its bright or dark side in the viewing direction. When the bright side is showing the disk allows passage of light from an LED. When the dark side is showing the disk masks the light from the LED. Preferably, an opaque shroud surrounds the LED and projects a short distance forwardly thereof to help define the cone in which light from the LED may be viewed in ON position. A side wall or said element projects forwardly of the rotation axis to mask the escape of light on that side transverse to the viewing direction. A second side wall may be placed on the other side for the same purpose or the adjacent element may provide the second wall.

REFERENCES:
patent: 4531318 (1985-07-01), Chang et al.
patent: 4577427 (1986-03-01), Browne
patent: 4860470 (1989-08-01), Browne
patent: 5005305 (1991-04-01), Turney et al.
patent: 5021773 (1991-06-01), Browne
patent: 5022171 (1991-06-01), Norfolk et al.
patent: 5050325 (1991-09-01), Browne
patent: 5055832 (1991-10-01), Browne

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