ILLUMINATION APPARATUS FOR VEHICLES

• US 20140022811A1
• Filed: 09/26/2012
• Published: 01/23/2014
• Est. Priority Date: 09/26/2011
• Status: Active Grant

• Current Assignee: Tesla Inc.
• Original Assignee: Tesla Motors Incorporated (Tesla Inc.)
• Inventors: Wheeler, David, Cucci, Brenda, Kilgore, Adam S., Zalan, Daryl
• Granted Patent: US 8,807,807 B2
• Time in Patent Office: Days
• US Class Current: 362/555
• CPC Class Codes: B60Q 1/2669 on door or boot handles lighting devices for vehicle interior on door handles B60Q3/267
• CPC Class Codes: B60Q 2400/40 Welcome lights, i.e. specific or existing exterior lamps to assist leaving or approaching the vehicle
• CPC Class Codes: B60Q 3/62 using light guides
• CPC Class Codes: E05B 1/0092 Moving otherwise than only rectilinearly or only rotatively E05B5/003 takes precedence
• CPC Class Codes: E05B 17/10 Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights
• CPC Class Codes: E05B 5/003 Pop-out handles, e.g. sliding outwardly before rotation
• CPC Class Codes: E05B 5/006 essentially defining a completely closed surface together with the wing
• CPC Class Codes: E05B 79/06 Mounting of handles, e.g. to the wing or to the lock
• CPC Class Codes: E05B 81/00 Power-actuated vehicle locks
• CPC Class Codes: E05B 81/76 Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
• CPC Class Codes: E05B 85/00 Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
• CPC Class Codes: E05B 85/103 creating a completely closed wing surface
• CPC Class Codes: E05B 85/107 Pop-out handles, e.g. sliding outwardly before rotation
• CPC Class Codes: E05B 85/18 a longitudinal grip part being pivoted about an axis parallel to the longitudinal axis of the grip part
• CPC Class Codes: G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
• CPC Class Codes: Y10T 292/57 Operators with knobs or handles

Abstract

Aspects of the disclosure provide a door handle assembly used in a vehicle door having an illumination module and illumination source that directs light in a first direction and a second direction using a pair of light pipes. The door handle from the door handle assembly includes a first illumination aperture oriented in the first direction and a second illumination aperture oriented in the second direction. As the illumination source generates light, the first light pipe receives a first portion of light and directs it toward a first illumination surface and the first illumination aperture in the first direction. By molding the second light pipe around the first light pipe, remaining light is captured from the illumination source as a second portion of light. The second portion of light reflects along the interior surfaces of the second light pipe towards the second illumination surface oriented in the second direction.

Claims

1. A door handle assembly used in a vehicle handle, comprising:

a door handle having a handle grip pocket and a first illumination aperture oriented in a first direction and a second illumination aperture oriented in a second direction, different from the first direction; and

an illumination module configured to fit inside the door handle having an illumination source and circuitry for generating light further including,

a first light pipe that receives a first portion of light from the illumination source and directs the first portion of light towards a first illumination surface in the first direction and through the first illumination aperture, and

a second light pipe molded around the first light pipe that receives a second portion of light from the illumination source and directs the second portion of light towards a second illumination surface in the second direction and through the second illumination aperture.

2. The door handle assembly of claim 1 wherein the handle grip pocket is formed between a first post portion and a second post portion extending from a planar handle member of the door handle.

3. The door handle assembly of claim 2 wherein the first illumination aperture and the second illumination aperture are both located at a distal end of the second post portion of the door handle.

4. The door handle assembly of claim 1 wherein an angle between the first illumination aperture and the second illumination aperture does not exceed a maximum angle selected from a set of maximum angles including a 30 degree angle, a 45 degree angle, a 90 degree angle, and a 180 degree angle.

5. The door handle assembly of claim 3 wherein the illumination module includes one light emitting diode (LED) device for producing light.

6. The door handle assembly of claim 3 wherein the illumination module includes two or more light emitting diode (LED) devices for producing light.

7. The door handle assembly of claim 2 wherein the illumination module fits inside the door handle at a distal portion of the first post portion of the planar handle member.

8. The door handle assembly of claim 1 wherein the first light pipe and the second light pipe are overmolded to fit over the illumination module.

9. The door handle assembly of claim 1 where an angle between the first illumination surface of the first light pipe and the second illumination surface of the second light pipe does not exceed a maximum angle selected from a set of maximum angles including a 30 degree angle, a 45 degree angle, a 90 degree angle, and a 180 degree angle.

10. The door handle assembly of claim 1 wherein the first illumination aperture in the first direction is oriented towards an inside area of the handle grip pocket and the second illumination aperture in the second direction is oriented towards a ground area below the door handle assembly.

11. An illumination module for use in a door handle for a vehicle, comprising:

an illumination source having circuitry for producing light;

a first light pipe having a first illumination surface that receives a first portion of light from the illumination source and directs the first portion of light in a first direction towards the first illumination surface; and

a second light pipe molded around the first light pipe that receives a second portion of light from the illumination source and directs the second portion of light in a second direction, different from the first direction, towards a second illumination surface.

12. The illumination module of claim 11 wherein the first illumination surface directs the first portion of light in the first direction towards an inside area of a handle grip pocket and the second illumination surface directs the second portion of light in the second direction towards a ground area below the door handle.

13. The illumination module of claim 11 wherein the illumination source includes one light emitting diode (LED) device for producing light.

14. The illumination module of claim 11 wherein the illumination source includes two or more light emitting diode (LED) devices for producing light.

15. The illumination module of claim 11 wherein the first light pipe is completely surrounded by the second light pipe and both the first light pipe and second light pipe are injection molded to fit over the illumination module.

16. The illumination module of claim 11 where an angle between the first illumination surface of the first light pipe and the second illumination surface of the second light pipe does not exceed a maximum angle selected from a set of maximum angles including a 30 degree angle, a 45 degree angle, a 90 degree angle, and a 180 degree angle.