| 摘要 |
In order to provide a display of numeric or alpha numeric information, a multi-segment array consists of a series of apertures 6 in an opaque sheet 4. Each aperture 6 is associated with a light-tight shutter or flap 7 individually controlled by an electromagnetic arrangement for movement between a closed position wherein it occludes the aperture 6 and an open position concealed behind the opaque sheet (4). The apertures 6 are preferably back-lit by a source of diffused light, which may illuminate a number of panels, but front lighting and reflecting coating on the flaps 7 may be used if desired.
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