Vehicle light system with illuminating roof rack

Patent metadata

Field	Value
Publication number	US-9290123-B2
Application number	US-201414508793-A
Country	US
Kind code	B2
Filing date	Oct 7, 2014
Priority date	Nov 21, 2013
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A vehicle lighting system is provided herein. The lighting system includes a roof rack including at least one side rail having a photoluminescent portion configured to illuminate in at least one distinct color due to being excited by at least one wavelength of light. A light source is configured to emit the at least one wavelength of light directed toward the photoluminescent portion. A controller is configured to control a light output of the light source.

First claim

What is claimed is:

1. An illuminating vehicle roof rack comprising:
a light source;
at least one side rail having a light-permeable portion;
a photoluminescent structure coupled to the light-permeable portion and configured to luminesce in response to light excitation by the light source; and
a metallized layer disposed between the photoluminescent structure and the light-permeable portion.

2. The illuminating vehicle roof rack of claim 1 , wherein the light source is further configured to emit a first wavelength of light and a second wavelength having a different wavelength than the first wavelength of light.

3. The illuminating vehicle roof rack of claim 2 , wherein the photoluminescent structure is configured to luminesce in a first color when excited only by the first wavelength of light and a second color when excited only by the second wavelength of light, wherein the second color is visually distinct from the first color.

4. The illuminating vehicle roof rack of claim 3 , wherein the photoluminescent structure is configured to luminesce in a third color when excited by both the first and second wavelengths of light, wherein the third color is defined by an additive light mixture of the first and second colors.

5. The illuminating vehicle roof rack of claim 4 , wherein the light source includes a plurality of light emitting diodes facing the photoluminescent structure and spaced longitudinally along an inner surface of the side rail, wherein each light emitting diode is configured to emit one of the first wavelength of light and the second wavelength of light.

6. The illuminating vehicle roof rack of claim 5 , wherein the inner surface of the side rail is configured to reflect light.

7. An illuminating vehicle roof rack comprising:
at least one side rail having a light-permeable portion; and
a photoluminescent structure coupled to the light-permeable portion and configured to luminesce in response to light excitation by a light source;
wherein the light source comprises a plurality of light emitting diodes spaced longitudinally along an inner surface of the side rail and arranged to face the photoluminescent structure.

8. The illuminating vehicle roof rack of claim 7 , wherein each of the light emitting diodes is configured to emit one of a first wavelength of light and a second wavelength of light.

9. The illuminating vehicle roof rack of claim 8 , wherein the photoluminescent structure is configured to luminesce in a first color when excited only by the first wavelength of light and a second color when excited only by the second wavelength of light, and wherein the photoluminescent structure is configured to luminesce in a third color when excited by both the first and second wavelengths of light.

10. The illuminating vehicle roof rack of claim 7 , wherein the side rail includes a metalized layer located between the light-permeable portion and the photoluminescent structure.

11. The illuminating vehicle roof rack of claim 7 , wherein the inner surface of the side rail is configured to reflect light.

12. A vehicle lighting system comprising:
a roof rack comprising:
at least one side rail having a light-permeable portion;
a photoluminescent structure coupled to the light-permeable portion and configured to luminesce in response to light excitation by a light source;
wherein the light source comprises a plurality of light emitting diodes spaced longitudinally along an inner surface of the side rail and arranged to face the photoluminescent structure; and

a controller configured to control a light output of the light source.

13. The vehicle lighting system of claim 12 , wherein the light source is configured to emit a first wavelength of light and a second wavelength of light having a different wavelength than the first wavelength of light.

14. The vehicle lighting system of claim 13 , wherein the photoluminescent structure is configured to luminesce in a first color when en excited by the first wavelength of light and a second color when excited by the second wavelength of light.

15. The vehicle lighting system of claim 14 , wherein the controller is configured to perform at least one of the following steps:
prompt the light source to emit only the first wavelength of light to cause the photoluminescent structure to luminesce in the first color;
prompt the light source to emit only the second wavelength of light to cause the photoluminescent structure to luminesce in the second color, and
prompt the light source to simultaneously emit the first and second wavelengths of light to cause the photoluminescent structure to luminesce in a third color defined by an additive light mixture of the first and second colors;
wherein the third color is visually distinct from the first and second colors.

16. The vehicle lighting system of claim 14 , wherein the controller is configured to perform at least one of the following steps:
prompt the light source to periodically emit only the first wavelength of light to cause the photoluminescent structure to periodically luminesce in the first color;
prompt the light source to periodically emit only the second wavelength of light to cause the photoluminescent structure to periodically luminesce in the second color,
prompt the light source to simultaneously and periodically emit the first and second wavelengths of light to cause the photoluminescent structure to periodically luminesce in a third color defined by an additive light mixture of the first and second colors; and
prompt the light source to alternate between pulsing the first and second wavelengths of light to cause the photoluminescent structure to periodically luminesce by alternating between the first and second colors.

17. The vehicle lighting system of claim 16 , wherein the controller is configured to prompt the light source to periodically emit at least one of the first and second wavelengths at one of a regular time interval and an irregular time interval.

Assignees

• Ford Global Tech Llc

Inventors

• Salter Stuart C
• Surman James J
• Dellock Paul Kenneth

Classifications

• F21S41/16

  Laser light sources · CPC title

• B60Q1/2611

  Indicating devices mounted on the roof of the vehicle · CPC title

• B60Q1/32

  for indicating vehicle sides {, e.g. clearance lights} · CPC title

• B60Q2400/10

  Electro- or photo- luminescent surfaces, e.g. signalling by way of electroluminescent strips or panels · CPC title

• B60R9/04

  Carriers associated with vehicle roof (B60R9/08 takes precedence) · CPC title