Color light guide applying lamp for vehicle

• US 9,366,412 B2
• Filed: 12/06/2012
• Issued: 06/14/2016
• Est. Priority Date: 12/13/2011
• Status: Active Grant

• Current Assignee: SL Corporation
• Original Assignee: SL Corporation
• Inventors: Kim, Min Suk
• Primary Examiner(s): May, Robert
• Assistant Examiner(s): Gyllstrom, Bryon T
• Application Number:
  US13/706,669
• Publication Number:
  US 20130148371A1
• Time in Patent Office: 1,286 Days
• Field of Search: 362/510, 362/511, 362/522, 362/498
• US Class Current: 1/1
• CPC Class Codes: F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21S 41/125 Coloured light
• CPC Class Codes: F21S 41/28 Cover glass
• CPC Class Codes: F21S 41/50 characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/235 Light guides
• CPC Class Codes: F21S 43/245 emitting light from one or more of its major surfaces
• CPC Class Codes: F21S 43/247 with a single light source being coupled into the light guide
• CPC Class Codes: F21S 43/255 Filters
• CPC Class Codes: F21S 43/26 Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: F21W 2103/10 Position lights

Abstract

Disclosed is a vehicle lamp which irradiates a desired color by mixing colors of light by using a colored light source or a light guide including a color layer or the like. A color light guide applying lamp for vehicle includes a light source which irradiates light of a first color, a light guide, at least one portion of which exhibits a second color, wherein after passing through the light guide, the light of the first color exhibits a third color by mixing the first color and the second color.

Claims

1. A color light guide applying lamp for vehicle, comprising:

a light source configured to irradiate a first color of light;

a light guide, at least one portion of which exhibits a second color;

a reflecting part having a plurality of protrusions formed along an opposite side of the light guide from which light is reflected; and

a filter having a fourth color spaced apart from the light source and disposed between the light source and the light guide,

wherein after passing through the light guide, the first color of light exhibits a third color of light by passing the first color of light through the second color,

wherein the light guide includes a colorless guide unit formed from a colorless transparent material which transmits a light having passed through the filter, and a light guide color layer which exhibits the second color and receives the light having passed through the guide unit and emits the third color,

wherein the colorless guide unit and the light guide color layer are integrally and optically bonded and have a surface contact therebetween, and

wherein the color light guide applying lamp is disposed within a casing of a headlamp at a front side of the vehicle.

2. The color light guide applying lamp for vehicle of claim 1, wherein the guide unit and the light guide color layer are formed to overlap each other in a transmission direction of the first color of light passing through the light guide color layer.

3. The color light guide applying lamp for vehicle of claim 1, wherein the guide unit is located on an inside of the lamp, the light guide color layer is located on an outside of the lamp, and the lamp exhibits the second color on the outside when the light source is off.

4. The color light guide applying lamp for vehicle of claim 1, wherein the guide unit and the light guide color layer are formed integrally by double injection.

5. The color light guide applying lamp for vehicle of claim 1, wherein one of the first color and the second color is yellow and the other one is blue.

6. The color light guide applying lamp for vehicle of claim 1, wherein the third color is white and the lamp is a position lamp.

7. The color light guide applying lamp for vehicle of claim 1, wherein the first color and the second color are complementary to each other.

8. The color light guide applying lamp for vehicle of claim 1, wherein at least one of the first color and the fourth color is yellow.

9. The color light guide applying lamp for vehicle of claim 1, wherein the light guide color layer is a first light guide color layer, and the light guide further includes a second light guide color layer having a fourth color at a predetermined position of the guide unit on which light from the light source is incident.

10. The color light guide applying lamp for vehicle of claim 9, wherein the fourth color is yellow, and the guide unit, the first light guide color layer and the second light guide color layer are formed integrally by double injection.

19. The color light guide applying lamp for vehicle of claim 1, wherein the casing of the headlamp further comprises a front window having a transparent first section and a second section having the guide unit and the light guide color layer disposed therein.

20. The color light guide applying lamp for vehicle of claim 1, wherein the filter is positioned adjacent to the light guide.

21. The color light guide applying lamp for vehicle of claim 1, wherein the filter is positioned beneath the light guide color layer and adjacent to the reflecting part.

11. A color light guide applying lamp for vehicle, comprising:

a light source configured to irradiate white light;

a light guide, at least one portion of which exhibits a first color other than white;

an external color layer which exhibits a second color other than white;

a reflecting part having a plurality of protrusions formed along an opposite side of the light guide from which light is reflected; and

a filter having a fourth color spaced apart from the light source and disposed between the light source and the light guide,

wherein the white light sequentially passes through the light guide and the external color layer to exhibit a third color by passing the first color through the second color,

wherein the light guide includes a colorless guide unit formed from a colorless transparent material which transmits a light having passed through the filter; and

a light guide color layer which exhibits the first color and receives the light having passed through the guide unit,

wherein the colorless guide unit and the light guide color layer are integrally and optically bonded and have a surface contact therebetween, and

wherein the external color layer is a casing of a lamp for the vehicle.

12. The color light guide applying lamp for vehicle of claim 11, wherein the guide unit and the light guide color layer are formed to overlap each other in a transmission direction of the white light passing through the light guide color layer.

13. The color light guide applying lamp for vehicle of claim 11, wherein one of the first color and the second color is green and the other one is red.

14. The color light guide applying lamp for vehicle of claim 11, wherein the third color is yellow and the lamp is a turn signal lamp.

15. The color light guide applying lamp for vehicle of claim 11, wherein one of the first color and the second color is red and the other one is sky blue.

16. The color light guide applying lamp for vehicle of claim 11, wherein the third color is white and the lamp is a backup lamp.

17. The color light guide applying lamp for vehicle of claim 11, wherein the guide unit and the light guide color layer are formed integrally by double injection.

18. The color light guide applying lamp for vehicle of claim 11, wherein the first color and the second color are complementary to each other.