# US 2013/0152437 A1 · Warning triangle for a motor vehicle

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- Number: US 2013/0152437 A1
- Document ID: US20130152437A1
- Status: Published application
- Kind: A1
- Application number: 13/805,089
- Filed: 2011-06-27
- Published: 2013-06-20
- Earliest claimed: 2010-06-30
- Assignees: OSRAM Opto Semiconductors GmbH
- Inventors: Kok Eng Ng; Chee Jia Chang
- Web page: https://patentgrep.com/patent/US20130152437A1

## CPC

- B60Q 7/00: Arrangement or adaptation of portable emergency signal devices on vehicles
- G09F 13/16: Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
- G09F 13/22: electroluminescent (electroluminescent light sources per se H05B33/00)
- G09F 2013/222: {with LEDs}
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS

## Abstract

A warning triangle for a motor vehicle includes at least one light-emitting diode, which emits light when in operation, and a light guide, which guides light emitted by the light-emitting diode to a front portion of the warning triangle and to a back portion of the warning triangle.

## Claims

### Claim at position 1

1-14. (canceled)

### Claim 15

A warning triangle for a motor vehicle comprising:
at least one light-emitting diode which emits light when in operation, and
a light guide which guides the light emitted by the light-emitting diode to a front portion of the warning triangle and to a back portion of the warning triangle.

### Claim 16 (depends on 15)

The warning triangle according to claim 15, wherein the light guide comprises a first reflective surface and a second reflective surface, the first reflective surface guiding light from the light-emitting diode to the front portion of the warning triangle and the second reflective surface guiding light from the light-emitting diode to the back portion of the warning triangle.

### Claim 17 (depends on 15)

The warning triangle according to claim 15, wherein the first and/or the second reflective surface of the light guide has a curved shape.

### Claim 18 (depends on 15)

The warning triangle according to claim 15, wherein the light guide is arranged downstream of the light-emitting diode in a direction of emission thereof.

### Claim 19 (depends on 15)

The warning triangle according to claim 15, comprising a plurality of light-emitting diodes which emit red light.

### Claim 20 (depends on 15)

The warning triangle according to claim 15, comprising a plurality of light-emitting diodes which emit yellow light.

### Claim 21 (depends on 15)

The warning triangle according to claim 15, comprising a plurality of light-emitting diodes, some of which emit red light and a remainder of which emit yellow light, the light-emitting diodes which emit red light and the light-emitting diodes which emit yellow light each being arranged alternately substantially in a line.

### Claim 22 (depends on 15)

The warning triangle according claim 15, wherein the light-emitting diode may be operated in flashing mod

### Claim 23 (depends on 15)

The warning triangle according to claim 15, comprising a plurality of light-emitting diodes which may be operated in running mode.

### Claim 24 (depends on 15)

The waning triangle according to claim 15, wherein the light-emitting diode is mounted on a circuit board.

### Claim 25 (depends on 15)

The warning triangle according to claim 15, wherein an outer surface of the warning triangle comprises raised portions.

### Claim 26 (depends on 15)

The warning triangle according to claim 15, further comprising a built-in control circuit that controls the light-emitting diode.

### Claim 27 (depends on 26)

The warning triangle according to claim 26, wherein the light-emitting diode and/or the control circuit is provided for electrical supply via a motor vehicle electrical system.

### Claim 28 (depends on 15)

The warning triangle according to claim 15, wherein
a plurality of light-emitting diodes is arranged substantially in a line,
the first reflective surface and the second reflective surface are arranged to form a common edge, and
the common edge is arranged centrally over the linearly arranged light-emitting diodes.