LIGHTING DEVICE OF A VEHICLE

• US 20130127341A1
• Filed: 11/08/2012
• Published: 05/23/2013
• Est. Priority Date: 11/11/2011
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Langkabel, Frank, Schneider, Ingolf, Roeckl, Philipp
• Granted Patent: US 9,566,898 B2
• Time in Patent Office: Days
• US Class Current: 315/79
• CPC Class Codes: B60Q 1/085 due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers B60Q1/10, B60Q1/12, B60Q1/1423 take precedence
• CPC Class Codes: B60Q 2300/30 Indexing codes relating to the vehicle environment
• CPC Class Codes: B60Q 2300/40 Indexing codes relating to other road users or special conditions
• CPC Class Codes: B60Q 2300/47 Direct command from other road users, i.e. the command for switching or changing the beam is sent by other vehicles or road devices
• CPC Class Codes: F21S 41/125 Coloured light
• CPC Class Codes: F21S 41/141 Light emitting diodes [LED]

Abstract

A lighting device of a vehicle is provided. The lighting device comprises a light fitting, which comprises a first and a second light source with different color locations. Furthermore, the lighting device has a first sensing module, which senses the actual value of the color location of the light fitting. In addition, the lighting device comprises a set value generator module which presets a set value for the color location of the light fitting, and a control module which reduces the difference between set value and actual value by means of an actuator module. Here, the set value of the color location of the light fitting is dependent on a driving situation of the vehicle or a personalized driving setting.

Claims

1. A lighting device of a vehicle, comprising:

a light fitting having a first and a second light source with different dominant color locations;

a first sensing module that senses the actual value of the color location of the light fitting;

a set value generator module that presets a set value for the color location of the light fitting;

a control module that reduces the difference between set value and actual value via an actuator module,

wherein the set value of the color location of the light fitting is dependent on a driving situation of the vehicle or a personalized driving setting.

2. The lighting device according to claim 1, wherein the personalized driving settings is arbitrarily preset via a color location selector module by a vehicle driver as set values within the scope of the limits that have to be legally maintained.

3. The lighting device according to claim 1, wherein the set value generator module interacts with a second sensing module which senses the driving situation.

4. The lighting device according to claim 3, wherein the driving situation is sensed by means of at least one of available navigation information of a navigation module, traffic routing information, car-to-car traffic information of a traffic information module, distance information of a distance module, travelling speed information of a travelling speed module and combinations thereof.

5. The lighting device according to claim 1, wherein the actual value of the color location is sensed by means of available data of the actuator module via adjustment options of the color location of the first and second light sources.

6. The lighting device according to claim 5, wherein the adjustment options further comprise a variation of a supply current of the first and second light sources by means of a pulse width modulation module.

7. The lighting device according to claim 5, wherein the adjustment options further comprise means of color combinations of color filters of a color filter module.

8. The lighting device according to claim 5, wherein the adjustment options further comprise means of rotary angle adjustments of polarization filters of a polarization filter module.

9. The lighting device according to claim 6, wherein the first light source further comprises a first light-emitting diode with a dominant color location in a warm-yellow range and the second light source further comprises a second light-emitting diode with a dominant color location in a cold-blue range, and wherein a control of the light intensity of the first and second light-emitting diodes makes possible a shifting of the common color location of the light fitting.

10. The lighting device according to claim 9, wherein the actuator module further comprises the pulse width modulation module that shifts a color location to a cold-blue color location of the light fitting to carry out a dimming of at least the first light-emitting diode with a dominant warm-yellow color location.

11. The lighting device according to claim 9, wherein the actuator module provides enlarged current pulse widths for the first light-emitting diode with the dominant color location in the warm-yellow range as well as for the second light-emitting diode with the color location in the cold-blue range for shifting in the direction of the cold-blue range subject to forming a cold-white dominant color location corresponding to the daylight.

12. The lighting device according to claim 9, wherein the actuator module further comprises a polarization filter module that includes at least two polarization filters which can be rotated against one another and controls the radiation intensity from about 100% to about zero dependent on a rotary angle difference between about 0°

and about 90°

, wherein a color location shift in the direction of a more short-wave, cold-blue color location occurs because of a diminishing of the more long-wave warm-yellow color component with increasing rotary angle difference.

13. The lighting device according to claim 1, wherein the light fitting comprises a plurality of monochromatic LED'"'"'s, the superimpositions of which form a preset set value color location.

14. A vehicle, comprising:

a lighting device as full headlamp, the lighting device including;

a light fitting having a first and second light source with different color locations;

a first sensing module that senses the actual value of the color location of the light fitting;

a set value generator module that presets a set value for the color location of the light fitting; and

a control module that reduces the difference between set value and actual value via an actuator module,

wherein the set value of the color location of the light fitting is dependent on a driving situation of the vehicle or a personalized driving setting.

15. The vehicle according to claim 14, wherein the vehicle further comprises a second sensing module that senses at least one parameter characterizing a current traffic situation by means of available navigation information, traffic routing information, car-to-car traffic information, distance information or travelling speed information.

16. The vehicle according to claim 15, wherein the second sensing module comprises a module selected from the group comprising a navigation module, a traffic information module, a distance module, a travelling speed module and combinations thereof.

17. The vehicle according to claim 16, wherein the traffic information module further comprises a camera with an evaluation unit and a car-to-car communication interface.

18. The vehicle according to claim 16, wherein the distance module further comprises at least one lidar sensor, at least one radar sensor or at least one ultrasound sensor with evaluation unit.