Title:
CONTROL NETWORK FOR LED-BASED LIGHTING SYSTEM IN A TRANSIT VEHICLE
Document Type and Number:
WIPO Patent Application WO/2009/011898
Kind Code:
A3
Abstract:
A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurementsor a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
Inventors:
KUANG BAIXIONG (US)
LIN JERRY (US)
WANG YONGCHANG (US)
KHOR CHIN SEONG (US)
LIN JERRY (US)
WANG YONGCHANG (US)
KHOR CHIN SEONG (US)
Application Number:
PCT/US2008/008766
Publication Date:
October 07, 2010
Filing Date:
July 17, 2008
Export Citation:
Assignee:
I O CONTROLS CORP (US)
KUANG BAIXIONG (US)
LIN JERRY (US)
WANG YONGCHANG (US)
KHOR CHIN SEONG (US)
KUANG BAIXIONG (US)
LIN JERRY (US)
WANG YONGCHANG (US)
KHOR CHIN SEONG (US)
International Classes:
H05B37/02; B60Q3/02; H05B44/00
Foreign References:
| US20060049332A1 | 2006-03-09 | |||
| US20040160199A1 | 2004-08-19 |
Attorney, Agent or Firm:
VANDERLAAN, Christopher, A. et al. (1800 Avenue of the Stars Suite 90, Los Angeles CA, US)
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