Light assembly and vehicle design element including such light assembly

Patent metadata

Field	Value
Publication number	US-10323817-B2
Application number	US-201615743556-A
Country	US
Kind code	B2
Filing date	Jul 8, 2016
Priority date	Jul 10, 2015
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

A light assembly for a vehicle design element includes a light guide, the light guide including a plurality of light receiving surfaces; and a plurality of light sources, the light sources being arranged adjacent to and directed towards respective light receiving surfaces, where the light guide is shaped to define an annular base lying in a first plane and at least one circumferential flange or cylinder disposed generally orthogonal, or inwardly or outwardly splayed to the first plane, the flange or cylinder extending away from the annular base towards a viewable annular light exit, the base including a plurality of shaped elements extending away from the first plane, each shaped element defining one of the light receiving surfaces for receiving incident light from a respective adjacent light source, where a plurality of the light receiving surfaces are orientated substantially transverse to the base.

First claim

The invention claimed is:

1. A light assembly for a vehicle design element, the assembly comprising:
a light guide, the light guide comprising a plurality of light receiving surfaces; and
a plurality of light sources comprising light emitting diodes (LEDs) on a circuit board, the light sources being arranged adjacent to and directed towards respective light receiving surfaces,
wherein the light guide is shaped to define an annular base lying in a first plane and to further define at least one circumferential flange or cylinder disposed generally orthogonal, or inwardly or outwardly splayed to the first plane, the circumferential flange or cylinder including a viewable annular light exit and extending away from the annular base of the light guide towards the viewable annular light exit, and
the annular base comprises a plurality of shaped elements in form of disconnections, recesses, holes or wedge-shaped protrusions, extending away from the first plane, each shaped element of the light guide defining one of the light receiving surfaces for receiving incident light from a respective adjacent light source, and a plurality of the light receiving surfaces are orientated substantially transverse to the annular base.

2. The light assembly of claim 1 , wherein the light guide transitions from the annular base to the flange or cylinder, sharply with a radius of less than 10% of a height of the flange or cylinder, the sharp transition facilitating internal reflection of light emitted from the light sources.

3. The light assembly of claim 1 , wherein the light guide is shaped to comprise two annular spaced-apart circumferential flanges, each flange extending away from the annular base towards a respective viewable annular light exit, the two viewable annular light exits radially spaced apart from each other.

4. The light assembly of claim 1 , wherein the light guide is shaped to comprise two spaced apart circumferential cylinders, each cylinder extending away from the annular base towards a respective viewable annular light exit, the two viewable light exits radially spaced apart from each other.

5. The light assembly of claim 1 , wherein the circumferential flanges or cylinders are non-continuous to provide disconnections such that circumferential light entry points at disconnected surfaces on the circumference of the flanges or cylinders are provided.

6. The light assembly of claim 1 , wherein the annular light exit comprises a plurality of steps, the steps promoting internal reflection.

7. The light assembly of claim 1 , wherein the light guide is substantially transparent and without any visible discrete optic features in an un-lit state, while being diffusive in a lit state.

8. The light assembly of claim 1 , wherein the light guide is substantially transparent and non-diffusive in both a lit and un-lit state, while the circumferential flanges or cylinders are substantially transparent in an un-lit state, while being diffusive in a lit state.

9. The light assembly of claim 1 , wherein a housing is provided behind the light guide, which at least one of
incorporates transitional reflective optics that vary the amount of light reflected back into the circumferential flanges or cylinders, and
comprises a black material.

10. The light assembly of claim 1 , wherein the light guide also features a bridging member, manufactured from the same material as the light guide, which is located inside and bisects the substantially annular shape of the light guide, and the bridging member has first and second ends which are disposed as light receiving surfaces and a light emitting surface along its major surface.

11. The light assembly of claim 10 , wherein the bridging member has a substantially trapezoidal cross-section.

12. The light assembly of claim 1 , wherein at least one of
the printed circuit board has an annular shape, and
the printed circuit board is coated white around the plurality of LEDs.

13. The light assembly of claim 11 , wherein the printed circuit board comprises additional light sources positioned adjacent to the light receiving surfaces to direct light into the bridging member.

14. The light assembly of claim 10 , wherein the bridging member is used in conjunction with a garnish, the garnish comprising cut-outs in the form of lettering or a logo.

15. The light assembly of claim 1 , wherein the lens has an outer component made from a clear material, and an inner component which is at least one of over moulded on the inner surface of the outer component and made from opaque material.

16. The assembly of claim 1 , wherein at least one of
the inner or outer component joins to the housing, and
the inner component sits on top of the printed circuit board and the shaped elements.

17. A vehicle design element including a light assembly according to claim 1 .

Assignees

• Smr Patents Sarl

Inventors

• Thoday Sam
• Gibson Brad
• Flynn Daniel
• Belcher Simon

Classifications

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• H05K2201/09027

  Non-rectangular flat PCB, e.g. circular · CPC title

• B60R13/005

  Manufacturers' emblems, name plates, bonnet ornaments, mascots or the like; Mounting means therefor · CPC title

• G09F13/04

  Signs, boards or panels, illuminated from behind the insignia · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title