US 12,084,094 B2
Vehicle light management device, associated vehicle and method
Luca Chiadini, Fretin (FR); Damien Faurois, Villeneuve d'Ascq (FR); Jean-Pierre Scaramuzzino, Warlaing (FR); Bertrand De-Colombel, Paris (FR); and Gopi Ethirajalu, Aulnoy-lez-Valenciennes (FR)
Assigned to ALSTOM Transport Technologies, Saint-Ouen-sur-Seine (FR)
Filed by ALSTOM Transport Technologies, Saint-Ouen-sur-Seine (FR)
Filed on Oct. 19, 2021, as Appl. No. 17/451,458.
Claims priority of application No. 20 10778 (FR), filed on Oct. 21, 2020.
Prior Publication US 2022/0119017 A1, Apr. 21, 2022
Int. Cl. H05B 47/10 (2020.01); B60Q 3/43 (2017.01); B60Q 3/47 (2017.01); B61D 29/00 (2006.01)
CPC B61D 29/00 (2013.01) [B60Q 3/43 (2017.02); B60Q 3/47 (2017.02)] 13 Claims
OG exemplary drawing
 
1. A light management device for a vehicle, the vehicle comprising at least one car extending mainly in a longitudinal direction and being divided into a plurality of lighting zones, the device comprising:
a plurality of sensors for measuring a density of passengers on board the vehicle suitable for calculating the density of passengers per each of the plurality of lighting zones,
a plurality of light sources grouped into at least two groups of light sources, each group being associated with a distinct respective lighting zone of the plurality of lighting zones and each light source of a same group of light sources emitting light radiation with the same optical characteristic,
a controller connected to each of the sensors for measuring the density of passengers, and to the light sources, the controller being configured to independently control the optical characteristic of the light radiation of the light sources of the same group of light sources based on the passenger density calculated for the corresponding lighting zone.