US 11,904,766 B2
Light signal device for a driverless transport system
Martin Eggensperger, Heilbronn (DE); Andrew Herzig, Nordheim (DE); Jonas Bachmann, Heilbronn (DE); Alexander Cristea, Heilbronn (DE); and Matthias Gschelak, Stetten (DE)
Assigned to W. Gessmann GmbH, Leingarten (DE)
Filed by W. Gessmann GmbH, Leingarten (DE)
Filed on Apr. 4, 2022, as Appl. No. 17/657,923.
Application 17/657,923 is a continuation of application No. PCT/EP2020/078103, filed on Oct. 7, 2020.
Claims priority of application No. 10 2019 215 332.1 (DE), filed on Oct. 7, 2019.
Prior Publication US 2022/0219601 A1, Jul. 14, 2022
Int. Cl. B60Q 1/00 (2006.01); B60Q 1/50 (2006.01); F21V 8/00 (2006.01)
CPC B60Q 1/525 (2013.01) [B60Q 1/507 (2022.05); B60Q 1/5037 (2022.05); B60Q 1/543 (2022.05); G02B 6/0068 (2013.01); G02B 6/0073 (2013.01); G02B 6/0078 (2013.01); B60Q 2400/20 (2013.01); B60Q 2900/40 (2022.05)] 21 Claims
OG exemplary drawing
 
1. A light signal device for a driverless transport system, comprising:
a front element having a plurality of optically transparent light exit openings, the front element being opaque apart from the light exit openings; and
at least one light generating unit having a light guide and having two light sources arranged at opposite ends of the light guide;
wherein the light guide has a plurality of light decoupling elements in order to emit light through the light exit openings;
wherein the light exit openings are arranged on the front element in a plurality of rows; and
wherein a separate light generating unit is provided for each of the rows;
wherein each of the rows has a plurality of light exit openings in a height direction, the light exit openings being arranged closer together within one of the rows than between two adjacent rows; and
wherein light is supplied to a plurality of light exit openings by a single light decoupling element of the light guide.