Indicator device

Details Indicator device Indicator device

1996-05-09

1997-10-14

Sember, Thomas M.

Illumination

Light modifier

Fluid medium type

362364, 362351, 40581, 349106, 34081556, 34081566, G09G 300, F21V 912

Patent

active

056764561

ABSTRACT:
An indicator device (14) having no moving parts includes a layered assembly (26) visible through an aperture (28) in a wall member (30), and a light source (30) positioned behind the layered assembly (26). The layered assembly (26) comprises a first transparent sheet (32) of a first color, a second transparent sheet (34) of a second color, and an LCD panel (36) interposed between the two sheets (32,34). The LCD panel (36) is adapted to be rendered transparent when energized and to be rendered opaque when de-energized. When the LCD panel (36) and the light source (38) are de-energized, the first color (e.g. red) is seen through the aperture (28), and when the LCD panel (36) and the light source (38) are energized a third color (e.g. green) is seen through the aperture (28). The indicator device (14) may be used, for example, as an in-service indicator of an ATM.

REFERENCES:
patent: 4791418 (1988-12-01), Kawahara et al.
patent: 4893903 (1990-01-01), Thakar et al.
patent: 4965564 (1990-10-01), Fabry et al.
patent: 5404133 (1995-04-01), Morike et al.

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