US 11,851,000 B2
Lighting device for the interior of a motor vehicle
Alexander Hersonski, Munich (DE); Sebastian Maria Kroes, Munich (DE); Matthias Lindner, Graefelfing (DE); Thomas Scherzinger, Groebenzell (DE); Gregor Walla, Munich (DE); and Carsten Wuenderlich, Haar (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 17/908,008
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed May 3, 2021, PCT No. PCT/EP2021/061522
§ 371(c)(1), (2) Date Aug. 30, 2022,
PCT Pub. No. WO2021/228597, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 10 2020 113 177.1 (DE), filed on May 15, 2020.
Prior Publication US 2023/0099228 A1, Mar. 30, 2023
Int. Cl. B60Q 3/60 (2017.01); B60Q 3/74 (2017.01)
CPC B60Q 3/60 (2017.02) [B60Q 3/74 (2017.02)] 19 Claims
OG exemplary drawing
 
1. A lighting device for an interior of a motor vehicle, the lighting device comprising:
a faceted body, an interior of which is translucent and which comprises a surface consisting of a plurality of plane facets, wherein:
the faceted body is arranged on an opening having a circumferential opening edge,
the opening is formed in a cover which externally delimits an inner region of the lighting device,
the surface of the faceted body comprises a first surface section and a second surface section,
the first surface section is exposed through the opening externally and is translucent,
the second surface section lies in the inner region of the lighting device and, except for one or more translucent surface regions, comprises a reflection layer which is reflective toward the interior of the faceted body, and
a plurality of light sources are arranged in the inner region of the lighting device such that, during operation, the light sources emit light through the one or more translucent surface regions of the second surface section into the faceted body, and at least a part of the emitted light is guided out from the faceted body by reflection at the reflection layer of the second surface section and refraction at the facets of the first surface section, so that a light distribution is generated on a surface in the interior of the motor vehicle.