US 12,214,897 B2
Escape route marking in vehicles
Wolfgang Sutter, Halstenbek (DE)
Assigned to LUFTHANSA TECHNIK AG, Hamburg (DE)
Appl. No. 18/041,696
Filed by Lufthansa Technik AG, Hamburg (DE)
PCT Filed Aug. 17, 2021, PCT No. PCT/EP2021/072775
§ 371(c)(1), (2) Date Feb. 15, 2023,
PCT Pub. No. WO2022/038107, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 10 2020 121 515.0 (DE), filed on Aug. 17, 2020.
Prior Publication US 2023/0312130 A1, Oct. 5, 2023
Int. Cl. B64D 45/00 (2006.01); B60Q 3/47 (2017.01); B60Q 3/74 (2017.01)
CPC B64D 45/00 (2013.01) [B60Q 3/47 (2017.02); B60Q 3/745 (2017.02); B64D 2045/007 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An illumination element for marking escape routes in vehicles, the illumination element comprising:
a planar substrate comprising:
a base surface configured for fastening on a first side; and
at least one planar electrical lighting element on a second side,
wherein a chargeable energy accumulator, a control circuit configured to control the at least one lighting element, an antenna configured to receive control signals, and an antenna configured to wirelessly transmit energy are provided on the substrate, and
wherein a ratio of a surface area of the base surface to a thickness of the illumination element is greater than 500 mm, and a ratio of the surface area of the base surface to a mass of the illumination element is greater than 100 mm2/g.