# US 7,407,311 B2 · Light with a ring structure for a vehicle lamp

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- Number: US 7,407,311 B2
- Document ID: US7407311B2
- Status: Granted
- Kind: B2
- Application number: 11/313,819
- Filed: 2005-12-22
- Published: 2006-11-30
- Granted: 2008-08-05
- Earliest claimed: 2005-05-24
- Inventors: Hsiu-Pen Yang
- Web page: https://patentgrep.com/patent/US7407311B2

## CPC

- B60Q 1/0052: {concentric}
- F21K 9/61: using light guides
- F21K 9/68: Details of reflectors forming part of the light source
- F21S 43/14: Light emitting diodes [LED]
- F21Y 2115/10: Light-emitting diodes [LED]
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A light with a ring structure for a vehicle lamp has a light-guiding ring with a dull face, a light-emitting element, and a reflective cover. The light-guiding ring defines a front annular face and has a cavity. The light-emitting element is disposed in the cavity. The reflective cover is disposed on a part of the front annular face and corresponds to the cavity. The light-guiding ring with a dull face guides light emitted by the light-emitting element therein. The reflective cover reflects the light into the light-guiding ring. As such, the brightness of the light with a ring structure is even to improve the warning function of a vehicle lamp to ensure a safer driving experience for its user.

## Claims

### Claim 1

A light with a ring structure for a vehicle lamp, comprising:
a light-guiding ring with a dull face, the light-guiding ring defining a front annular face and a rear annular face, the rear annular face having a cavity formed therein;
the front annular face of the light-guiding ring has a cambered surface, and the reflective cover has a cambered shape and hooks onto the light-guiding ring;
a light emitting element disposed in the cavity; and
a reflective cover covering a portion of the front annular face corresponding to the cavity, whereby light emitted from the light-emitting element is reflected by the reflective cover into the light guiding ring for providing a substantially uniform light transmission through said light-guiding ring.