Lighting device and rearview device for vehicles

Patent metadata

Field	Value
Publication number	US-10808908-B2
Application number	US-201715425200-A
Country	US
Kind code	B2
Filing date	Feb 6, 2017
Priority date	Feb 4, 2016
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

A lighting device for a visual display in a rearview device of a vehicle includes at least one light element, at least one reflecting element which is included on or in a support element of the lighting device and is adapted to reflect incident light from the light element, at least one absorption element which is included on or in the support element of the lighting device and is adapted to absorb incident light from the light element, and at least one light guide element which is included on or in the support element of the lighting device and is adapted to collect and guide incident light from the light element, where the support element, the reflecting element, the absorption element or the light guide element are at least partially curved away from the light element.

First claim

What is claimed is:

1. A lighting device for a visual display in a rearview device of a vehicle, comprising:
at least one light element;
an exchangeable diaphragm element which is light-permeable in at least one region or has an opening in at least one region; and
at least one light guide element which functions as a support of the lighting device, and collects and guides incident light from the light element,
wherein the light guide element comprises at least four sides including a first curved side facing the light element and a second opposite curved side comprising a reflecting element,
wherein a light beam coming from the light element impinges on the reflecting element at an obtuse angle formed between the impinging light and a surface of the reflecting element ranging from 91 degrees to 179 degrees so that the light beam passes through the light-permeable region or the opening of the exchangeable diaphragm element,
and wherein the exchangeable diaphragm element extends substantially parallel to a third side of the at least four sides,
wherein the exchangeable diaphragm element is connected or connectable to the light guide element, or
a housing is provided by the exchangeable diaphragm element and the light guide element which is tight or sealed.

2. The lighting device according to claim 1 , wherein an
inner surface of the reflecting element which faces the incident light of the light element has a concave curvature, or
an inner surface of the light guide element which faces the incident light of the light element has a concave curvature, and
wherein the concave curvature of the reflecting element or the light guide element is at least segmentally spherical or aspherical.

3. The lighting device according to claim 1 , wherein an
inner surface of the reflecting element or of the light guide element which faces the incident light of the light element is at least one of partially structured and grained, or
an inner surface of the reflecting element or the light guide element which faces the incident light of the light element is at least partially a light-scattering surface.

4. The lighting device according to claim 1 , wherein
the reflecting element reflects at least 35% of the radiation power of the light of the light element incident thereon in a directed and/or diffuse manner.

5. The lighting device according to claim 1 , wherein the exchangeable diaphragm element is adapted to opaquely cover a region curved by the light guide element, or
the exchangeable diaphragm element has a reflecting surface on a side facing away from the light guide element.

6. The lighting device according to claim 1 , wherein the dimension of the obtuse angle is dependent on a dimension or an arrangement of the light-permeable region or the opening.

7. A rear-view device of a vehicle having a lighting device according to claim 1 .

8. The rearview device according to claim 7 , further comprising at least one rearview element, wherein the at least one rearview element has a mirror element or a camera or an electronic display.

Assignees

• Smr Patents Sarl

Inventors

• Fritz Daniel
• Meier Eugen
• Schmidt Oliver
• Negel Raimund

Classifications

• B60R1/1207 Primary

  with lamps; with turn indicators · CPC title

• B60Q1/2665

  on rear-view mirrors (lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258) · CPC title

• F21S43/332 Primary

  Diffusing reflectors · CPC title

• B60R2001/1253

  with cameras, video cameras or video screens · CPC title

• F21S43/31 Primary

  Optical layout thereof · CPC title