Illumination apparatus for vehicles

Patent metadata

Field	Value
Publication number	US-11953173-B2
Application number	US-202318137773-A
Country	US
Kind code	B2
Filing date	Apr 21, 2023
Priority date	Oct 23, 2020
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

An illumination apparatus for vehicles having a light source, a support plate for receiving the light source, and an optical unit arranged in front of the light source in the main emission direction to deflect light emitted by the light source onto a roadway in front of the vehicle in accordance with a predetermined light distribution. The light source has a light-emitting surface and a light source frame surrounding the same. The light source is surrounded by a shielding frame with a wall that is raised in the main emission direction and encloses an intermediate space between the light source and the optical unit.

First claim

What is claimed is:

1. An illumination apparatus for a vehicle, the illumination apparatus comprising:
a light source;
a support plate, the light source being positioned on a front side of the support plate; and
an optical unit arranged in front of the light source in a main emission direction to deflect light emitted by the light source onto a roadway in front of the vehicle in accordance with a predetermined light distribution,
wherein the light source has a light-emitting surface and a light source frame surrounding the light-emitting surface,
wherein the light source is surrounded by a shielding frame that is raised in a main emission direction and encloses an intermediate space between the light source and the optical unit,
wherein the shielding frame includes a frame wall that is arranged at a distance from the light source and extends into a region near or directly up to the optical unit, and
wherein the shielding frame widens, at least partially in the main emission direction, from the frame wall into a coupling wall that is connected in a sealing manner to an optical support carrying the optical unit.

2. The illumination apparatus according to claim 1 , wherein the frame wall is designed to follow an edge contour of the light source.

3. The illumination apparatus according to claim 1 , wherein the shielding frame is attached to the support plate, wherein the frame wall of the shielding frame either directly contacts the front side of the support plate or is spaced apart from the front side of the support plate.

4. The illumination apparatus according to claim 3 , wherein the shielding frame is attached to the support plate by a fastener arranged in a corner region of the support plate.

5. The illumination apparatus according to claim 1 , wherein the optical unit is held by the optical support, and wherein a free edge of the coupling wall is adhesively connected to the optical support by an adhesive bed.

6. The illumination apparatus according to claim 1 , wherein the coupling wall has a larger transverse extent than the frame wall.

7. The illumination apparatus according to claim 1 , wherein the shielding frame has a light-absorbing surface at least on an inner side of the shielding frame.

8. The illumination apparatus according to claim 1 , wherein the shielding frame is made of a dark-colored plastic material.

9. The illumination apparatus according to claim 1 , wherein a free edge of the coupling wall has a greater distance from the support plate than a rear side of the optical unit.

10. The illumination apparatus according to claim 3 , further comprising a heat sink that is arranged on a rear side of the support plate facing away from the light source.

Assignees

• Hella Gmbh & Co Kgaa

Inventors

• Cramer Herbert
• Herold Florian
• Schimon Christian
• Schwan Alexander
• Schwemin Dirk

Classifications

• F21S41/43 Primary

  characterised by the shape thereof · CPC title

• F21S41/143 Primary

  the main emission direction of the LED being parallel to the optical axis of the illuminating device · CPC title

• F21S41/27

  Thick lenses · CPC title

• F21S41/29

  Attachment thereof (for achieving variable light distribution F21S41/63) · CPC title

• F21S45/47

  Passive cooling, e.g. using fins, thermal conductive elements or openings · CPC title