Lighting system for displays in vehicles

• US 20050195614A1
• Filed: 02/25/2005
• Published: 09/08/2005
• Est. Priority Date: 12/23/2002
• Status: Active Grant

• Current Assignee: LISA Drã¤Xlmaier GmbH (Fritz Dräxlmaier Holding GmbH)
• Original Assignee: LISA Drã¤Xlmaier GmbH (Fritz Dräxlmaier Holding GmbH)
• Inventors: Bayersdorfer, Bernhard
• Granted Patent: US 7,441,913 B2
• Time in Patent Office: Days
• US Class Current: 362/545
• CPC Class Codes: F16H 59/0278 Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
• CPC Class Codes: F21V 21/00 Supporting, suspending, or attaching arrangements for lighting devices F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00; Hand grips
• CPC Class Codes: G09F 13/22 electroluminescent electroluminescent light sources per se H05B33/00
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A lighting system (10) for displays, in particular in motor vehicles, comprises: a support (12), at least one first lighting means (14) for punctiform illumination, which is disposed on the support (12), a second lighting means (16) for punctiform illumination, which is disposed on the support (12), and a transparent cover (18), which is arranged at a distance from the support (12) on the side of the support with the first and second lighting means (14, 16), and which has at least one symbol (20) to be illuminated from behind by the first and second lighting means (14).

Claims

1. A lighting system (10) for displays, in particular in motor vehicles, comprising:

a support (12);

at least one first lighting means (14) for punctiform illumination, which is disposed on said support (12);

at least one second lighting means (16) for punctiform illumination, which is disposed on said support (12); and

a transparent cover (18) which is arranged at a distance from said support (12) on the side of the support (12) with the first and second lighting means (14, 16), and which has at least one symbol (20) to be illuminated from behind by said first and second lighting means (14, 16).

2. The lighting system (10) according to claim 1, characterized in that the first and second lighting means (14, 16) is a light-emitting diode.

3. The lighting system (10) according to claim 1, characterized in that the support (12) is a circuit board or a flexible printed circuit board.

4. The lighting system (10) according to claim 1, characterized in that a diffusing disk is attached on the side of the cover (18) facing the support (12) or that said cover (18) is milky.

5. The lighting system (10) according to claim 1, further comprising a lighting-limiting device (22) between the support (12) with the first and second lighting means (14, 16) and the cover (18), which limits the light emitted by said first and second lighting means (14, 16) to an area of said cover (18) to be illuminated from behind.

6. The lighting system (10) according to claim 5, characterized in that the lighting-limiting device is a transparent distance plate (22) which is provided with holes (24) corresponding to the area of the cover (18) to be illuminated from behind by the first lighting means (14).

7. The lighting system (10) according to claim 6, characterized in that the inner surfaces (26) of the holes of the distance plate (22) are varnished or polished.

8. The lighting system (10) according to claim 5, characterized in that the lighting-limiting device is an optical fiber which is disposed between the support (12) and the cover (18) in the area of the cover to be illuminated from behind by the first and second lighting means (14, 16).

9. The lighting system (10) according to claim 5, characterized in that the lighting-limiting device comprises at least one injection-molded part which is disposed between the support (12) and the cover (18) and limits the area to be illuminated from behind by the first and second lighting means (14, 16).

10. The lighting system (10) according to claim 5, characterized in that the lighting-limiting device comprises a transparent distance plate (22) as well as an injection-molded part which is inserted in the holes of the distance plate.

11. The lighting system (10) according to claim 1, characterized in that the first lighting means (14) is arranged at a distance of between 2 and 5 mm, preferably 3 to 4 mm, from the cover (18).