公开(公告)号：US4229894A

公开(公告)日：1980-10-28

申请号：US825933

申请日：1977-08-19

申请人： John P. Beck

发明人： John P. Beck

IPC分类号： G09F13/06

CPC分类号： G09F13/06

摘要： An illuminated number display device is disclosed which includes a generally rectangular housing having a front wall on which is mounted one or more number plates so that each number plate overlies an opening in the front wall. Each number plate defines a number visible in daylight and has a plurality of frustoconical light passages therethrough which outline the number and facilitate improved illuminated number display at night from a plurality of low energy light bulbs mounted internally of the housing so that the light from each bulb passes through at least two openings in the front wall and through the light channels in the corresponding number plates. Light diffuser plates are preferably disposed between the front wall openings and the light bulbs, and, optionally, over an opening in a bottom wall of the housing to provide downwardly directed auxiliary lighting.

摘要翻译： 公开了一种照明数字显示装置，其包括具有前壁的大致矩形的壳体，在其上安装有一个或多个数字板，使得每个数字板位于前壁中的开口上。 每个数字板限定了在日光下可见的数字，并且具有多个通过其的截头圆锥形的光通道，其突出了该数量，并且有助于在安装在壳体内部的多个低能量灯泡的晚上改进的照明数量显示，使得来自每个灯泡的光 穿过前壁中的至少两个开口并通过相应号码牌中的光通道。 光漫射板优选地设置在前壁开口和灯泡之间，并且可选地设置在壳体的底壁中的开口上方，以提供向下定向的辅助照明。