SIDE TURN INDICATOR

• US 20080100470A1
• Filed: 11/01/2006
• Published: 05/01/2008
• Est. Priority Date: 11/01/2006
• Status: Abandoned Application

• Current Assignee: PACCAR Incorporated
• Original Assignee: PACCAR Incorporated
• Inventors: Conway, Scott M.
• Application Number:
  US11/555,572
• Publication Number:
  US 20080100470A1
• Time in Patent Office: Days
• US Class Current: 340/815.45
• CPC Class Codes: B60Q 1/34 for indicating change of drive direction B60Q1/22 takes precedence
• CPC Class Codes: B60Q 1/381 with several light sources activated in sequence, e.g. to create a sweep effect

Abstract

An LED-illuminated marker or indicator light for motor vehicles is provided. The light is designed so that when the light is mounted on the motor vehicle the light from some LEDs is directed toward a zone in which an intended viewer is likely located. Other LEDs illuminate light guides to increase the visual area of the marker or indicator light.

Claims

1. A lamp for a motor vehicle, the lamp comprising:

a housing including a reflector and a lens;

a first LED disposed within said housing such that an optical axis of the first LED is oriented approximately orthogonal to a surface of the lens;

a light guide disposed within the housing; and

a second LED disposed within the housing such that light from the second LED is directed into the light guide.

2. A lamp as recited in claim 1, wherein the light guide is a rod.

3. A lamp as recited in claim 2, wherein a rear portion of the rod is faceted or corrugated.

4. A lamp as recited in claim 2, wherein a reflective coating is disposed on a rear portion of the rod.

5. A lamp as recited in claim 1 further comprising a substrate, wherein the first and second LEDs are mounted on the substrate.

6. A lamp as recited in claim 5, wherein the first and second LEDs are mounted on opposite surfaces of the substrate.

7. A lamp as recited in claim 1, wherein the lamp comprises a side turn signal indicator designed such that when the side turn indicator is mounted on a motor vehicle the optical axis of the first LED is approximately parallel to a center line of the motor vehicle.

8. A lamp as recited in claim 7, wherein the side turn indicator is designed such that when the side turn indicator is installed on a motor vehicle the light guide is approximately perpendicular to a center line of the motor vehicle and parallel with the ground.

10. An indicator lamp as defined in claim 8, wherein the indicator lamp is a side turn indicator and the expected position of a viewer is generally beside the motor vehicle.

12. An indicator lamp as defined in claim 8, wherein the optical axis of the first LED is approximately perpendicular to an optical axis of the second LED.

13. An indicator lamp as defined in claim 8, wherein the optical axis of the first LED is approximately parallel to a centerline of the motor vehicle.

14. An indicator lamp as defined in claim 8, wherein the light guide comprises a rod having a faceted rear surface.

16. A method as defined in claim 14, wherein providing the light guide comprises providing a rod-shaped light guide having a plurality of facets on a rear portion thereof.

18. A method as defined in claim 14, further comprising a reflector near the light guide to reflect light toward the predetermined zone.

9. An indicator lamp for a motor vehicle, the lamp comprising:

a housing configured to be disposed from the motor vehicle, the housing including a lens;

a first LED disposed within said housing such that an optical axis of the LED is oriented toward an expected position of a viewer of the indicator lamp when the indicator lamp is disposed from the motor vehicle;

a second LED disposed within the housing such that an optical axis of the second LED is oriented at a broad angle with respect to the optical axis of the first LED; and

a light guide disposed within the housing so as to receive light from the second LED.

11. An indicator lamp as defined in claim 9, wherein the expected position of the viewer comprises an area beside the motor vehicle in which turn signal indicators on the front and rear of the motor vehicle are not visible.

15. A method for providing a signal light for a motor vehicle, the signal light being designed to be viewable from a predetermined zone near the motor vehicle, the method comprising:

providing a housing configured to be disposed from the motor vehicle, the housing including a lens;

providing a first LED disposed within said housing such that an optical axis of the LED is oriented toward the predetermined zone when the indicator lamp is disposed from the motor vehicle;

providing a light guide disposed within the housing so that it is oriented generally perpendicular to the optical axis of the first LED; and

providing a second LED disposed within the housing so as provide illumination to the light guide.

17. A method as defined in claim 15, further comprising providing a reflective coating on the facets.

19. A method as defined in claim 17, wherein the predetermined zone comprises an area beside the motor vehicle in which side turn signal indicators on the front and rear of the motor vehicle are generally not visible.

20. A method as defined in claim 15, wherein providing first and second LEDs comprises providing a first plurality of LEDs and a second plurality of LEDs.

21. A method as defined in claim 19, wherein optical axes of the first plurality of LEDs are oriented generally parallel to a center line of the motor vehicle and optical;

axes of the second plurality of LEDs are oriented generally perpendicular to the center line of the motor vehicle and generally parallel to the ground.