LIGHTING DEVICE FOR LIGHTING THE INTERIOR OF A TRANSPORTATION VEHICLE

• US 20200130572A1
• Filed: 04/05/2018
• Published: 04/30/2020
• Est. Priority Date: 05/29/2017
• Status: Active Grant

• Current Assignee: Volkswagen AG
• Original Assignee: Volkswagen AG
• Inventors: FRANKE, Stefan, ZANDER, Klaus
• Granted Patent: US 10,807,525 B2
• Time in Patent Office: Days
• CPC Class Codes: B60Q 3/10 for dashboards
• CPC Class Codes: B60Q 3/60 characterised by optical aspects
• CPC Class Codes: B60Q 3/78 for generating luminous strips, e.g. for marking trim component edges
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/0033 with successive reflections from one reflector to the next or following
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/70 on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device for lighting the interior of a transportation vehicle having an oblong housing by which a belt carrier having light sources is held. The housing is a reflector element having at least one reflector chamber in which light beams, which are emitted from the light sources are reflected in a diffuse state before the light beams arrive at a light emission opening. A lighting device providing an extremely homogeneous light emission with an extremely compact design.

Claims

1. A lighting apparatus for lighting the interior of a transportation vehicle, the lighting apparatus comprising:

an elongate housing;

a band support having a multiplicity of illuminants is held, by the housing,

wherein the housing includes a reflector element that has at least one reflector chamber in which beams of light deliverable or delivered by the illuminants are diffusely reflectable or reflected before the beams of light reach a light exit opening.

2. The lighting apparatus of claim 1, wherein the housing is in G form in cross section.

3. The lighting apparatus of claim 1, wherein the support for the illuminants are flexible.

4. The lighting apparatus of claim 1, wherein the housing is made of a white, highly reflective material and/or is provided with a white, highly reflective coating.

5. The lighting apparatus of claim 1, wherein the cross section of the housing is formed from two profiles, each open on one side, whose opening sides project into one another.

6. The lighting apparatus of claim 1, wherein the support is a variably truncatable element such that following truncation a remaining portion of the support continues to be fully operational.

7. The lighting apparatus of claim 1, wherein a light-emitting segment perceptible by a viewer is producible or produced by each illuminant, wherein the illuminants are arranged on the support at an interval from one another that is such that the producible or produced light-emitting segments overlap in an overlap region.

8. The lighting apparatus of claim 7, wherein the interval of the illuminants is at least approximately 15 mm to approximately 35 mm in size.

9. The lighting apparatus of claim 1, wherein the cross section of the housing has an edge length of approximately 20 mm×

20 mm to approximately 30 mm×

30 mm.

10. A transportation vehicle, comprising at least one lighting apparatus of claim 1.