EMERGENCY LIGHTING FOR AN ELEVATOR CAB
An exemplary elevator lighting device includes a display panel that is activated during elevator operation to provide a display of selected information. A backlight portion illuminates the display panel during elevator operation to make the selected information visible on the display panel. The back...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | An exemplary elevator lighting device includes a display panel that is activated during elevator operation to provide a display of selected information. A backlight portion illuminates the display panel during elevator operation to make the selected information visible on the display panel. The backlight portion receives power from a primary power source during elevator operation. The backlight portion receives power from a backup power source when power from the primary power source is discontinued. The backlight portion illuminates the display panel during the power loss condition to provide light in a vicinity of the device such as within an elevator cab. |
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