公开(公告)号：US20130199064A1

公开(公告)日：2013-08-08

申请号：US13760901

申请日：2013-02-06

Applicant: Saf-T-Glo Limited

Inventor： Sean Patrick O'Kell

IPC: G09F13/04

CPC classification number: G09F13/04 ,  G08B7/062 ,  G09F13/18 ,  G09F13/20 ,  G09F13/42 ,  G09F2013/1881

Abstract: A sign has a sign plate mounted in a frame to display an image such as the word “EXIT” when illuminated. The sign includes an electrically powered light source configured for edge lighting of the sign. The sign plate has a front portion, a rear portion and an intermediate portion between the front and rear portions. The rear portion provides a photoluminescent light source for back lighting the sign. The sign is edge lit when the electrically powered light source is in use and is backlit by the photoluminescent light source in darkness or low ambient light conditions when the electrically powered light source is not in use.

Abstract translation: 符号在框架中安装有标志牌，以在照明时显示诸如单词“EXIT”的图像。 该标志包括配置用于符号边缘照明的电动光源。 标牌在前部和后部之间具有前部，后部和中间部。 后部提供用于背光照明的光致发光光源。 当电源光源正在使用时，该符号是边缘点亮的，并且在黑暗或低环境光条件下的光致发光光源背光时，电源光源未被使用时。