| 摘要 |
<p>A display element includes a movable member which moves to display a bright or a dark side in a viewing direction in ON and OFF positions respectively. An illuminating means is arranged to illuminate the movable element in ON position for viewing in a first azimuth arc including the viewing direction. The movable member may mask the illuminating means to viewers in the OFF position of the member. In addition to light from the illuminated member, the components may be arranged so that viewers over a second arc may view the means directly when the member is in ON position. The elements may be arranged in arrays to form a changeable sign. Thus the array may be made up of single elements, of columns of such elements or of a combination of elements and columns. The use of an illuminating means for each movable member allows an array to be placed closer to a vehicle windshield for wider viewing.</p> |
