US 9,541,251 B2Granted

Lighting appliance for vehicles

AssigneeHella KGaA Hueck & Co.

InventorCarmen Bungenstock

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Abstract

A lighting appliance has a flat light guide and multiple light sources radiating light beams and a section for coupling-in light of the flat light guide, wherein the flat light guide has a surface for coupling-in the light beam and a deflecting surface for deflecting the coupled-in light beam toward a main section of the light guide, onto which a surface for coupling-out of light abuts in the light guiding direction, that the main section extends between the section for coupling-in of light and the surface for coupling-out of light has opposing flat sides, on which the coupled-in light beam is fully reflective in direction of the surface for coupling-out of light, wherein the surface for coupling-in of light is embodied so that the coupled-in light beam is directed under a tipping angle relative to a main radiation direction of the light source in the direction of the deflecting surface.

Claims10

Dependent claims

A lighting appliance for vehicles, comprising:

a flat light guide including a section for a coupling-in of light and a multitude of light sources radiating light beams arranged in the section for the coupling-in of light;
a surface for the coupling-in of the light beams in the section for the coupling-in of light in the flat light guide, a deflection surface for the deflection of the coupled-in light beams in the direction of a main section of the light guide, and a surface for a coupling-out of light abutting the deflection surface in the light guiding direction;
the main section of the light guide extending between the section for the coupling-in of light and the surface for the coupling-out of light having opposing flat sides, on which the coupled-in light beam is fully reflective in direction of the surface for the coupling-out of light;
and
wherein the surface for the coupling-in of light is embodied so that the coupled-in light beam is directed under an acute tipping angle relative to a main radiation direction of the light source in the direction of the deflecting surface.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/160,293Filed 21 Jan 2014
Priority: DE 10 2013 100 55721 Jan 2013
Published: US 2014/0204600 A124 Jul 2014
Granted: 10 Jan 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F21S 43/31
Characterised by reflectors: optical layout thereof
F21S 43/14
Characterised by the type of light source: light emitting diodes [LED]
F21S 43/239
Characterised by the shape of the light guide: plate-shaped
F21S 43/243
Characterised by the emission area: emitting light from one or more of its extremities