# US 11,994,711 B2 · LED module

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- Number: US 11,994,711 B2
- Document ID: US11994711B2
- Status: Granted
- Kind: B2
- Application number: 17/902,043
- Filed: 2022-09-02
- Published: 2023-06-29
- Granted: 2024-05-28
- Earliest claimed: 2021-12-29
- Assignees: Hyundai Mobis Co., Ltd.
- Applicants: Hyundai Mobis Co., Ltd.
- Inventors: Seok Ho Jeong; Jung Young Kim
- Web page: https://patentgrep.com/patent/US11994711B2

## CPC

- G02B 6/0075: {Arrangements of multiple light guides (G02B6/0028 takes precedence)}
- F21S 43/239: plate-shaped
- F21S 43/245: emitting light from one or more of its major surfaces
- F21S 43/247: with a single light source being coupled into the light guide
- F21S 43/27: Attachment thereof
- F21S 43/40: characterised by the combination of reflectors and refractors
- G02B 6/003: {Lens or lenticular sheet or layer}
- H10H 20/855: Optical field-shaping means, e.g. lenses
- H10H 20/856: Reflecting means
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- G02B 6/0021: {for housing at least a part of the light source, e.g. by forming holes or recesses}
- G02B 6/0036: {2-D arrangement of prisms, protrusions, indentations or roughened surfaces}
- G02B 6/0053: {Prismatic sheet or layer; Brightness enhancement element, sheet or layer}
- G02B 6/0055: {Reflecting element, sheet or layer}
- H10H 20/872: {Periodic patterns for optical field-shaping, e.g. photonic bandgap structures}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

Disclosed is a LED module. The LED module includes a cover part, a board part connected to a front side of the cover part, a light emitting part electrically connected to the board part, disposed on a front side of the board part, and that emits light through a side surface thereof, and a panel part disposed on the front side of the board part, and the panel part includes a light guide unit including a plurality of light output parts that guides and outputs light emitted from the side surface of the light emitting part.

## Claims

### Claim 1

An LED module comprising:
a cover part having a front side facing in a first direction;
a board part disposed on the front side of the cover part and having a front side facing in the first direction;
a light emitting part disposed on the front side of the board part, electrically connected to the board part and configured to emit light through a side surface of the light emitting part; and
a panel part disposed on the front side of the board part and comprising a light guide unit configured to guide and output the light emitted from the side surface of the light emitting part,
wherein the light guide unit comprises:
a body part configured to receive the light emitted from the side surface of the light emitting part; and
a plurality of light output parts extending from and disposed radially with respect to the body part and configured to emit the light received at the body part to a front side of the panel part.

### Claim 2 (depends on 1)

The LED module of claim 1, further comprising:
a lens part disposed on the front side of the board part and surrounding the light emitting part; and
an optic disposed at the panel part along with the lens part and having a fine boss shape.

### Claim 3 (depends on 2)

The LED module of claim 2, wherein the optic includes a first optic disposed at a rear surface of the panel part, recessed toward a front side of the panel part, and configured to reflect the light emitted from the side surface of the light emitting part and guide the reflected light toward the front side of the panel part, the first optic having a shape of which a vertical length decreases along distance from the front side of the panel part.

### Claim 4 (depends on 3)

The LED module of claim 3, wherein the optic further includes a second optic disposed at and protruding from a front surface of the panel part and configured to guide the light emitted from the side surface of the light emitting part toward the front side of the panel part.

### Claim 5 (depends on 1)

The LED module of claim 1, wherein:
a vertical length of the board part corresponds to that of the cover part, and
a vertical length of the panel part corresponds to that of the board part.

### Claim 6 (depends on 1)

The LED module of claim 1, further comprising an outer lens disposed on and spaced apart from a front surface of the panel part, wherein a vertical length of the outer lens corresponds to that of the panel part.

### Claim 7 (depends on 2)

The LED module of claim 2, wherein:
the panel part includes a first recess disposed at a rear surface of the panel part and having a shape corresponding to a shape of the lens part, and
the lens part is disposed at the first recess.

### Claim 8 (depends on 3)

The LED module of claim 3, wherein:
a vertical length of the board part is smaller than that of the cover part,
the panel part covers a side surface of the board part, and
the first optic includes a first area disposed at the side surface of the board part and a second area disposed at a front surface of the board part and stepped from the first area.

### Claim 9

An LED module comprising:
a cover part;
a board part disposed on a front side of the cover part;
a light emitting part disposed on a front side of the board part, electrically connected to the board part and configured to emit light through a side surface of the light emitting part;
a panel part disposed on the front side of the board part and comprising a light guide unit including a plurality of light output parts configured to guide and output the light emitted from the side surface of the light emitting part;
a lens part disposed on the front side of the board part and surrounding the light emitting part; and
an optic disposed at the panel part along with the lens part and having a fine boss shape,
wherein the optic includes a first optic disposed at a rear surface of the panel part, recessed toward a front side of the panel part, and configured to reflect the light emitted from the side surface of the light emitting part and guide the reflected light toward the front side of the panel part, the first optic having a shape of which a vertical length decreases along distance from the front side of the panel part,
wherein a vertical length of the board part is smaller than that of the cover part, the panel part covers a side surface of the board part, and the first optic includes a first area disposed at the side surface of the board part and a second area disposed at a front surface of the board part and stepped from the first area, and
wherein the panel part further includes a second recess disposed at a rear surface of the panel part and having a size corresponding to that of the board part, and the board part is disposed at the second recess.

### Claim 10 (depends on 2)

The LED module of claim 2, wherein the lens part has a semi-elliptical cross-sectional shape.

### Claim 11 (depends on 1)

The LED module of claim 1, wherein:
the panel part includes a first light guide unit, and
the first light guide unit includes a plurality of light guides disposed radially with respect to the light emitting part and configured to output the light emitted from the side surface of the light emitting part to a front side of the panel part.

### Claim 12 (depends on 11)

The LED module of claim 11, wherein each of the plurality of light guides includes:
a light input surface configured to receive the light emitted from the light emitting part; and
a light output surface configured to output the light received at the light input surface.

### Claim 13 (depends on 12)

The LED module of claim 12, wherein:
the light emitting part includes four side surfaces configured to emit the light, and
the plurality of light guides includes four light guides provided corresponding to the four side surfaces of the light emitting part, respectively.

### Claim 14 (depends on 11)

The LED module of claim 11, wherein each of the plurality of light guides has a circular cross-sectional shape.

### Claim 15 (depends on 1)

The LED module of claim 1, wherein:
the body part includes a light input surface configured to receive the light emitted from the light emitting part, and
each of the plurality of light output parts includes a light output surface configured to output the light received at the light input surface.

### Claim 16 (depends on 1)

The LED module of claim 1, wherein the light guide unit further includes:
a deposition surface provided at a corner portion of the light guide unit, at which two of the plurality of light output parts neighboring each other are connected to each other; and
a reflective material disposed on the corner portion of the light guide unit.

### Claim 17 (depends on 15)

The LED module of claim 15, wherein:
the light input surface is divided into a plurality of light input parts corresponding to the plurality of light output parts, respectively, and
a width of each of the plurality of light input parts decreases as extending toward an end of a corresponding one of the plurality of light output parts.

### Claim 18

An LED module comprising:
a cover part;
a board part disposed on a front side of the cover part;
a light emitting part disposed on a front side of the board part, electrically connected to the board part and configured to emit light through a side surface of the light emitting part; and
a panel part disposed on the front side of the board part and comprising a light guide unit, the light guide unit including:
a body part configured to receive the light emitted from the side surface of the light emitting part; and
a plurality of light output parts extending from and disposed radially with respect to the body part and configured to emit the light received at the body part to a front side of the panel part,
wherein the body part includes a light input surface configured to receive the light emitted from the light emitting part, and each of the plurality of light output parts includes a light output surface configured to output the light received at the light input surface, and
wherein the light input surface includes diffusion bosses disposed along a circumferential direction of the side surface of the light emitting part.

### Claim 19 (depends on 15)

The LED module of claim 15, wherein each of the plurality of light output parts includes:
a reflective surface provided on a surface opposite to the light output surface and configured to reflect the light received at the light input surface, and
a reflective optic disposed on the reflective surface and having a fine boss shape.