SIGNS
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United States of America Patent
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N/A
Issued Date -
Aug 8, 2013
app pub date -
Feb 6, 2013
filing date -
Feb 8, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
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.
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