Display device
AssigneeCitizen Watch Co., Ltd.
InventorsMasaru Kawaharada, Etsuso Yokoyama
Life of this patent
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Abstract
A segmental display device includes a window plate having a plurality of segmental openings for indicating selected characters. A plurality of closure members are supported on a rotatable shafts extending in parallel to the plurality of segmental openings, respectively, and adapted to close selected one of the plurality of segmental openings to indicate the selected characters. A plurality of actuating units are mounted on the window plate adjacent the segmental openings, respectively, and operatively connected to the rotatable shafts for selectively rotating the closure members. Light is provided from a source within a casing, so that the display contrast and visibility will effectively increase as the level of ambient lighting decreases.
Claims10
A segmental display device comprising:
- a casing;
- a window plate mounted at an open end of the casing and having a plurality of segmental openings to provide a display of selected characters;
- a light source mounted in said casing rearwardly of the window plate;
- a plurality of actuating units, mounted on the rearward side of the window plate at positions adjacent the segmental openings, respectively, for actuating rotatable shafts extending parallel to the plane of the window plate at the sides of the segmental openings, respectively;
- and
- a plurality of closure members supported on said rotatable shafts, respectively, to selectively permit light from the light source to pass through selected one of the segmental openings and block the passage of light through another selected one of the segmental openings for thereby providing the display of the selected characters.
Dependencies are inferred from the claim text.