Control network for LED-based lighting system in a transit vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 4, 2015
Grant Date -
Feb 27, 2014
app pub date -
Feb 14, 2013
filing date -
Jul 17, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
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 measurements or 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.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- H05B Class
- 2921 Applications Filed
- 2548 Patents Issued To-Date
- 87.24 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- H05B Class
- 14.35 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 4, 2027 |
