Title:
EMERGENCY LIGHTING FOR AN ELEVATOR CAB
Document Type and Number:
WIPO Patent Application WO/2011/001227
Kind Code:
A3
Abstract:
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.
Inventors:
BEIGNET BRUNO (FR)
Application Number:
PCT/IB2009/053238
Publication Date:
November 17, 2011
Filing Date:
June 29, 2009
Export Citation:
Assignee:
OTIS ELEVATOR CO (US)
BEIGNET BRUNO (FR)
BEIGNET BRUNO (FR)
International Classes:
B66B5/00; B66B11/02; B66B7/00
Foreign References:
| US4013993A | 1977-03-22 | |||
| US20050224298A1 | 2005-10-13 | |||
| US20030006102A1 | 2003-01-09 | |||
| JP2007331875A | 2007-12-27 | |||
| JPH1017229A | 1998-01-20 |
Other References:
See also references of EP 2448855A4
Attorney, Agent or Firm:
LOISEL, Bertrand et al. (52 rue de la Victoire, Paris Cedex 09, FR)
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