Self-diagnostic fault identification system for emergency lighting unit
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United States of America Patent
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Sep 15, 2020
Grant Date -
Mar 15, 2018
app pub date -
Jul 31, 2017
filing date -
Jul 29, 2016
priority date (Note) -
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Abstract
An emergency lighting device includes a housing, a light emitter positioned in the housing, a control circuit positioned in the housing and operatively connected to the light emitter, an indicator light positioned in the housing, and a fault indicator circuit positioned in the housing and operatively connected to the indicator light. The fault indicator circuit is configured to monitor the light emitter, analyze activation of the light emitter, and activate the indicator light based on the analysis of the activation of the light emitter.
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