Lighting device for vehicles

Patent metadata

Field	Value
Publication number	US-11566770-B2
Application number	US-201917437121-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Mar 27, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A lighting device for vehicles with a number of light sources, a number of reflectors reflecting the light emitted by the light sources into a specified main reflection direction, a number of diffusers scattering the light emitted by the light sources and a lens which is disposed in main reflection direction in front of the reflector and the diffuser. The lens is disposed at a v-shaped angle of a surface normal of the lens toward the main reflection direction of the reflector. A theoretical prolongation of the diffuser in relation to the surface normal of the lens extends in an acute angle of incidence or vertically to the lens. The diffuser is disposed as a separating wall between two reflectors which are disposed on stepped, offset levels and/or the diffuser is disposed as an end wall at a reflector.

First claim

The invention claimed is:

1. A lighting device for vehicles comprising:
a number of light sources ( 1 );
a number of reflectors ( 5 , 5 ′, 5 ″), by which light ( 9 ) emitted by the light sources ( 1 ) is reflected in a predetermined main reflection direction (R);
a number of diffusers ( 3 , 3 ′), by which the light ( 9 ) emitted by the light sources ( 1 ) is scattered;
a lens ( 7 ) disposed in the main reflection direction (R) in front of the reflector r ( 5 , 5 ′, 5 ″) and the diffuser ( 3 , 3 ′);

wherein
the lens ( 7 ) is disposed at a v-shaped angle (φ) between a surface normal (NL) of the lens ( 7 ) and the main reflection direction (R) of the reflector ( 5 , 5 ′, 5 ″);
the diffuser ( 3 , 3 ′) is disposed as at least one separating wall ( 3 ) between two reflectors ( 5 , 5 ′, 5 ″) disposed on stepped, offset levels and/or as an end wall ( 3 ′) at a reflector ( 5 ), wherein the separating wall ( 3 ) and/or the end wall ( 3 ′) have a flat or a slightly curved shape and/or feature light distribution optics; and
the flat or slightly curved wall ( 3 ) is oriented such that an imaginary continuation ( 28 ) of the flat or slightly curved wall ( 3 ) in relation to the surface normal (NL) of the lens ( 7 ) intersects the lens ( 7 ) at an acute angle of incidence (α) or perpendicular to the lens ( 7 ).

2. The lighting device of claim 1 , wherein a first end ( 24 ) of the separating wall ( 3 ) facing a first reflector ( 5 , 5 ′) encloses an obtuse angle (γ) with an end of the first reflector ( 5 , 5 ′) facing the same wall and that a second end ( 25 ) facing a second reflector ( 5 , 5 ′) of the same separating wall ( 3 ) encloses an acute angle (δ) with the end of the second reflector ( 5 , 5 ′) facing the same wall.

3. The lighting device of claim 2 , wherein the first reflector ( 5 ′) is disposed opposite to the main reflection direction (R) on an offset level to the second reflector ( 5 ″).

4. The lighting device of claim 1 , wherein the angle of incidence (α) running on a horizontal plane is smaller than 50°.

5. A lighting device for vehicles comprising:
a number of light sources ( 1 );
a number of reflectors ( 5 , 5 ′, 5 ″), by which light ( 9 ) emitted by the light sources ( 1 ) is reflected in a predetermined main reflection direction (R);
a number of diffusers ( 3 , 3 ′), by which the light ( 9 ) emitted by the light sources ( 1 ) is scattered;
a lens ( 7 ) disposed in the main reflection direction (R) in front of the reflector r ( 5 , 5 ′, 5 ″) and the diffuser ( 3 , 3 ′);

wherein
the lens ( 7 ) is disposed at a v-shaped angle (φ) between a surface normal (NL) of the lens ( 7 ) and the main reflection direction (R) of the reflector ( 5 , 5 ′, 5 ″);
the diffuser ( 3 , 3 ′) is disposed as a separating wall ( 3 ) between two reflectors ( 5 , 5 ′, 5 ″) disposed on stepped, offset levels and/or as an end wall ( 3 ′) at a reflector ( 5 ), and
the flat or curved wall ( 3 ) is oriented such that an imaginary continuation ( 28 ) of the flat or slightly curved separating wall ( 3 ) in relation to the surface normal (NL) of the lens ( 7 ) intersects the lens ( 7 ) at an acute angle of incidence (α) or perpendicular to the lens ( 7 ), and

one single reflector ( 5 , 5 ′, 5 ″) and one single separating wall ( 3 ) are allocated to each of the light sources ( 1 ).

6. The lighting device of claim 1 , wherein a number of light sources ( 1 ) is provided which are disposed in a row in certain intervals to each other and wherein the row of light sources ( 1 ) is located on a vertical plane ( 29 ) or spanning a vertical surface intersecting a number of reflectors ( 5 , 5 ′, 5 ″) and a number of diffusers ( 3 ).

7. The lighting device of claim 1 , wherein the end wall ( 3 ′) of an end-side reflector ( 5 ) out of the majority of reflectors ( 5 ) runs in the direction of the lens ( 7 ).

8. The lighting device of claim 1 , wherein the reflectors ( 5 , 5 ′, 5 ″) are connected with each other in one piece, forming a reflector support component ( 6 ), with the reflector support component ( 6 ) featuring the reflectors ( 5 ) and an opening ( 15 ) disposed between neighbouring reflectors ( 5 ) which holds the separating wall ( 3 ).

9. The lighting device of claim 1 , wherein the separating wall ( 3 ) and/or at least one end wall ( 3 ′) are connected with each other in one piece, forming a diffuser support component ( 4 ).

10. The lighting device of claim 1 , wherein the diffuser support component ( 4 ) features reflector fitting surfaces ( 12 ) adapted to the shape of the reflectors ( 5 , 5 ′, 5 ″) which are each disposed in the direction of extension (E) of the diffuser support component ( 4 ) and which are located between two separating walls ( 3 ).

11. The lighting device of claim 1 , wherein the diffuser support component ( 4 ) features a supporting plane ( 10 ) projecting from the diffusers ( 3 , 3 ′) and the reflector fitting surface ( 12 ) towards the lens ( 7 ).

12. A lighting device for vehicles comprising:
a number of light sources ( 1 );
a number of reflectors ( 5 , 5 ′, 5 ″), by which light ( 9 ) emitted by the light sources ( 1 ) is reflected in a predetermined main reflection direction (R);
a number of diffusers ( 3 , 3 ′), by which the light ( 9 ) emitted by the light sources ( 1 ) is scattered;
a lens ( 7 ) disposed in the main reflection direction (R) in front of the reflector r ( 5 , 5 ′, 5 ″) and the diffuser ( 3 , 3 ′);

wherein
the lens ( 7 ) is disposed at a v-shaped angle (φ) between a surface normal (NL) of the lens ( 7 ) and the main reflection direction (R) of the reflector ( 5 , 5 ′, 5 ″);
the diffuser ( 3 , 3 ′) is disposed as a separating wall ( 3 ) between two reflectors ( 5 , 5 ′, 5 ″) disposed on stepped, offset levels and/or as an end wall ( 3 ′) at a reflector ( 5 ),
the flat or slightly curved wall ( 3 ) is oriented such that an imaginary continuation ( 28 ) of the flat or slightly curved separating wall ( 3 ) in relation to the surface normal (NL) of the lens ( 7 ) intersects the lens ( 7 ) at an acute angle of incidence (α) or perpendicular to the lens ( 7 ), and

the diffusers ( 3 , 3 ′) feature a white or grey surface.

13. The lighting device of claim 1 , wherein the reflector ( 5 , 5 ′, 5 ″) features light distribution optics ( 16 ) deflecting the light ( 9 ) in a vertical and/or horizontal direction.

14. The lighting device of claim 1 , wherein the reflector support component ( 6 ) features a retaining plane ( 13 ) projecting from the reflectors ( 5 ) in the direction of lens ( 7 ) which is fitted flush with the surface of supporting plane ( 10 ) of the diffuser support component ( 4 ).

15. The lighting device of claim 1 , wherein the angle of incidence (α) running on a horizontal plane is smaller than 30°.

Assignees

• Hella Gmbh & Co Kgaa
• Hella Autotechnik Nova S R O

Inventors

• Niedenzu Laura
• Sorbi Jan
• Holous Pavel
• Gatsios Sebastian

Classifications

• F21S43/241

  of complex shape · CPC title

• F21S43/31 Primary

  Optical layout thereof · CPC title

• F21S43/40 Primary

  characterised by the combination of reflectors and refractors · CPC title

• F21S43/252

  Two or more successive light guides · CPC title

• F21S43/331

  Semi-transparent reflectors · CPC title