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US 5,627,532 AGranted
Switch panel device
AssigneeJapan Aviation Electronics Industry, Limited
InventorMasamitsu Ishiguro
Life of this patent
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Abstract
This invention provides a switch panel device capable of changing indicia for identifying switch elements in a short time. The switch panel device comprises a transparent frame holding switch elements such that the operating ends of the switch elements project forwardly from the frame, a diffusion sheet applied to the front surface of the frame, and an LCD projector for projecting images of characters identifying the respective switch elements below and in juxtaposition to the corresponding operating ends of the switch elements.
Claims13
A switch panel device comprising:
- a switch panel having a plurality of switch elements;
- and
- an LCD projector disposed behind and spaced apart from said switch panel for projecting enlarged switch element-identifying images of indicia such as characters, symbols and figures identifying said switch elements onto portions of said switch panel that are respectively adjacent to the corresponding switch elements, those portions of said switch panel on which said enlarged switch element-identifying images are projected being visible from an outer surface of the switch panel.
Dependencies are inferred from the claim text.