CN213577291U

CN213577291U - Light guide combination with light uniformity

Info

Publication number: CN213577291U
Application number: CN202022507312.5U
Authority: CN
Inventors: 刘辉; 史雅莉
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-06-29
Anticipated expiration: 2030-11-03

Abstract

The utility model relates to a light guide combination with light homogeneity, including LED light source, light guide one and light guide two, the setting of two different faces of light guide one and light guide, just light guide one and light guide two are crossing at least in the projection of a plane, the light process that the LED light source sent the light guide one is transmitted with light guide two. The utility model avoids the problem of bright spots easily generated at the intersection by adopting the common intersecting light guide, thereby improving the integral lighting uniformity; by adopting the light guide combination, the dark area at the intersection is made up without adding a triangular piece, and the manufacturing cost is saved.

Description

Light guide combination with light uniformity

Technical Field

The utility model relates to a car light technical field especially relates to a light guide combination with light homogeneity.

Background

Light guides are increasingly being used in the design of vehicle light fixtures due to the ease of striping. When the vehicle lamp is designed in the whole automobile factory, the lamp model is not limited to a single light guide model, and various light guides with special models such as a complex C-shaped light guide or a round light guide are pursued.

Currently, there are mainly 2 of these types of specially shaped light guide designs:

(1) direct cross-type light guides, but bright spots are generated at the light guide cross positions, and the lighting appearance of the lamp is affected.

(2) The parallel light guide and the triangular piece are added, but the whole lightening effect of the model is not uniform, and the triangular piece has the problem of superbrightness.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve two kinds of light guide designs at present and can have the problem of lighting effect inhomogeneous and can produce the bright spot, the utility model provides a light guide combination with light homogeneity, including LED light source, light guide one and light guide two, the setting of two different faces of light guide one and light guide, just light guide one and light guide two are crossing at a planar projection at least, the light process that the LED light source sent the light guide one is transmitted with light guide two.

Preferably, the first light guide is S-shaped, the second light guide is linear, and the first light guide and the second light guide are combined to form a C shape. Light guide one and light guide two do not intersect, but the projections intersect, so that bright spots are generated at the light guide intersections.

Further, the light inlet end of the first light guide is positioned below the light inlet end of the second light guide.

Preferably, the light inlet end of the first light guide is located above the light inlet end of the second light guide.

Furthermore, the LED light source comprises a first light source and a second light source, the first light source and the second light source are located on the same pcb, and light rays emitted by the first light source and the second light source are transmitted through the first light guide and the second light guide respectively.

Preferably, the light guide is made of a PC material or a PMMA material. The PC material or PMMA material light guide has good light guide performance.

Further, the light guide is fixed in the vehicle lamp by a light guide holder.

Has the advantages that: the utility model avoids the problem of bright spots easily generated at the intersection by adopting the common intersecting light guide, thereby improving the integral lighting uniformity; by adopting the light guide combination, the dark area at the intersection is made up without adding a triangular piece, and the manufacturing cost is saved.

Drawings

FIG. 1 is a schematic view of a first light guide assembly according to the present invention;

FIG. 2 is a schematic view of a second light guide assembly according to the present invention;

FIG. 3 is a schematic view of a third light guide assembly according to the present invention;

FIG. 4 is a schematic view of a fourth light guide assembly according to the present invention;

in the figure: 1. a first light guide; 2. a second light guide; 3. and a light inlet end.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like refer to orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Example one

A light guide combination with light uniformity comprises an LED light source, a light guide I1 and a light guide II 2, wherein the light guide I1 and the light guide II 2 are arranged in a non-coplanar mode, the projections of the light guide I1 and the light guide II 2 at least on one plane are intersected, and light emitted by the LED light source is transmitted through the light guide I1 and the light guide II 2. The first light guide 1 and the second light guide 2 are in a linear shape, and the first light guide 1 and the second light guide 2 are different in surface, but the projections of the first light guide 1 and the second light guide 2 at least on one plane are intersected, so that the problem of bright spots easily generated at the intersection by adopting a common intersected light guide is avoided, and the uniformity of integral lighting can be realized.

The LED light source comprises a first light source and a second light source, the first light source and the second light source are located on the same pcb, and light rays emitted by the first light source and the second light source are transmitted through the first light guide 1 and the second light guide 2 respectively.

The material of the first light guide 1 and the second light guide 2 is PC material or PMMA material. The PC material or PMMA material light guide has good light guide performance. The first light guide 1 and the second light guide 2 are fixed in the car lamp through the light guide frame.

As shown in fig. 1, the first light guide 1 is S-shaped, the second light guide 2 is linear, and the first light guide 1 and the second light guide 2 are combined to form a C-shape. Light guide one 1 and light guide two 2 do not intersect, but the projections intersect, so that bright spots are generated at the light guide intersections. As shown in fig. 1, the light input end 3 of the first light guide 1 is located below the light input end 3 of the second light guide 2, and the first light guide 1 is located in front of the second light guide 2.

Example two

The difference from the above embodiment is that: as shown in fig. 2, the light input end 3 of the first light guide 1 is located below the light input end 3 of the second light guide 2, and the first light guide 1 is located in front of the second light guide 2.

EXAMPLE III

The difference from the above embodiment is that: as shown in fig. 3, the light input end 3 of the first light guide 1 is located above the light input end 3 of the second light guide 2, and the first light guide 1 is located in front of the second light guide 2.

Example four

The difference from the above embodiment is that: as shown in fig. 4, the light input end 3 of the first light guide 1 is located above the light input end 3 of the second light guide 2, and the first light guide 1 is located behind the second light guide 2.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A light guide assembly having light uniformity, comprising: the LED light source comprises an LED light source, a first light guide (1) and a second light guide (2), wherein the first light guide (1) and the second light guide (2) are arranged in a different surface mode, the projections of the first light guide (1) and the second light guide (2) at least on one plane are intersected, and light rays emitted by the LED light source are transmitted through the first light guide (1) and the second light guide (2).

2. A light guide assembly as defined in claim 1, wherein: the first light guide (1) is S-shaped, the second light guide (2) is linear, and the first light guide (1) and the second light guide (2) are combined to form a C shape.

3. A light guide assembly as defined in claim 2, wherein: the light inlet end (3) of the first light guide (1) is positioned below the light inlet end (3) of the second light guide (2).

4. A light guide assembly as defined in claim 2, wherein: the light inlet end (3) of the first light guide (1) is positioned above the light inlet end (3) of the second light guide (2).

5. A light guide assembly as defined in claim 1, wherein: the LED light source comprises a first light source and a second light source, the first light source and the second light source are located on the same pcb, and light rays emitted by the first light source and the second light source are transmitted through the first light guide (1) and the second light guide (2) respectively.

6. A light guide assembly as defined in claim 1, wherein: the material PC material or PMMA material of light guide one (1) and light guide two (2).

7. A light guide assembly as defined in claim 1, wherein: the first light guide (1) and the second light guide (2) are fixed in the car lamp through the light guide frame.