CN115435294B

CN115435294B - A light guide structure

Info

Publication number: CN115435294B
Application number: CN202110613752.5A
Authority: CN
Inventors: 蔡慧娟
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2025-10-24
Anticipated expiration: 2041-06-02
Also published as: CN115435294A

Abstract

The invention belongs to the technical field of automobile lamps, and relates to a light guide type lamp, in particular to a light guide structure with light entering at two ends, which comprises a light guide inner surface, a light guide outer surface, a short light guide light entering end, a short light guide tail end, a long light guide light entering end, a long light guide tail end and a light guide flanging, wherein the light guide is a continuous light guide, short light guide tail end light guide teeth and long light guide tail end light guide teeth are spliced in order one by one, the light guide flanging light guide teeth are spliced in order one by one, the light guide is fixedly connected with a PCB, and a light source is arranged on the PCB. The invention can realize good appearance consistency and lighting uniformity of the light guide with complicated shape of the luminous surface and has stronger shape sense.

Description

Light guide structure

Technical Field

The invention belongs to the technical field of automobile lamps, and relates to a light guide type lamp, in particular to a light guide structure with light entering at two ends.

Background

Along with the development of automobile industry, the modeling of car lamps is more and more diversified, especially, because of the motion sense is quite sufficient and attractive, consumers like car lamps of this kind, this kind of array car lamp needs to set up longer light guide, in order to lead the light that LED sent to the lamp shade from the PCB board, the light guide generally adopts PC material, perhaps PMMA material to make, have fine light guiding performance, the light guide structure is an important optical structure in the car lamp, the application of light guide type lamps and lanterns is many, for the both ends that the modeling of light emitting surface is complicated advance light type light guide, at present many lamps and lanterns do not consider and do a transition in the concatenation department, directly two independent light guides or simply do and connect, the problem that two light guides or existence leak light can always be seen to this kind of structure when lighting, therefore, it has important meaning to design a transition structure that can fuse two light guides into an integral.

Disclosure of Invention

In order to solve the above problems, the present invention provides a light guiding structure, and the technical scheme of the present invention is as follows:

The utility model provides a light guide structure, light guide structure and PCB board fixed connection, be equipped with on the PCB board and incident to light guide structure's light source, PCB board and light guide direct positioning help reducing the light source deviation, improve positioning accuracy, light guide structure includes light guide internal surface, light guide surface, short light guide light inlet end, short light guide end, long light guide light inlet end and long light guide end, the light guide structure forms continuous light guide, the light guide tooth at short light guide end with the light guide tooth at long light guide end one by one splices neatly, and the outward appearance shows the light guide in the non-state and the state of lighting and is an entirety, the light guide tooth of short light guide end with the transition junction at long light guide end still is furnished with the light guide turn-ups, the light guide tooth of light guide turn-ups respectively with the light guide tooth at short light guide end and the light guide tooth at long light guide end one by one splices neatly, and the outward appearance all shows at the corner under the non-state of lighting and has a closed angle, and the molding sense is stronger.

Further, the PCB is distributed at two ends of the light guide structure, the light source at each end is at least one LED, the distance between the LED and the end of the light guide structure is 0.5-1.5mm, and the specific distance is determined according to light efficiency, assembly and light guide burning prevention.

Further, pattern teeth are arranged on the inner surface of the light guide, the pattern teeth are concave teeth or convex teeth, and the lighting uniformity can be realized by adjusting the pattern teeth.

Further, the outer surface of the light guide is provided with the transverse stripes, so that the lighting uniformity of the light guide can be improved.

Further, a circle of transverse stripes are arranged on the part of the short light guide light inlet end, which is not long, so that light can be more easily diffused after entering the light guide, further, the dark area of the light inlet end is improved, and finally, the lighting uniformity of the light guide is improved.

Further, the light guide teeth of the short light guide tip remain extending in the direction of the tip front section.

Further, the light guide teeth of the long light guide tip remain extending in the direction of the tip front section.

According to the application, the arrangement direction of the light guide teeth at the tail end of the long light guide and the tail end of the short light guide are different from the extension direction of the tail end of the light guide, so that the brightness of the light guide with light entering at the two ends is high, and a bright line is formed.

Further, the tooth height of the light guide teeth at the tail end of the short light guide is larger or smaller than that of the light guide teeth at the tail end of the long light guide, so long as the light guide teeth at the junction are ensured to be spliced neatly and uniformly.

Further, the tooth heights of the light guide teeth of the light guide flange are larger or smaller than those of the light guide teeth at the tail end of the short light guide and the light guide teeth at the tail end of the long light guide, so long as the light guide flange light guide teeth and the light guide teeth on the light guide are ensured to be spliced neatly and uniformly.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

1. According to the application, the light guide teeth at the tail end of the short light guide and the light guide teeth at the tail end of the long light guide are spliced in order one by one, the transition joint of the tail end of the short light guide and the tail end of the long light guide is also provided with the light guide flanging, the light guide teeth of the light guide flanging are respectively spliced in order one by one with the light guide teeth at the tail end of the short light guide and the light guide teeth at the tail end of the long light guide, and the appearance consistency and the lighting consistency of the light-emitting surface modeling complicated two-end light-entering light guide transition sections are realized.

2. The application sets the light guide flanging at the transitional connection position of the short light guide tail end and the long light guide tail end, does not add new parts, does not design a transitional structure which is too complex, does not increase the cost, and simultaneously does not bring inconvenience to processing.

3. The transition joint of the short light guide tail end and the long light guide tail end is provided with the light guide flanging, the light guide flanging is also provided with the light guide teeth, the appearance of the light guide flanging in the non-lighting state and the lighting state shows that the corner is provided with a sharp angle, the modeling sense is stronger, and the light guide flanging is deeply loved by consumers.

Drawings

FIG. 1 is a schematic view showing the structure of the back surface of a light guide of the present embodiment;

FIG. 2 is a schematic view of the front structure of the light guide of the present embodiment;

fig. 3 is a lighting diagram of the present embodiment;

fig. 4 is a schematic view showing the splicing of the light guide teeth of the light guide flange, the light guide teeth of the short light guide end and the light guide teeth of the long light guide end of the present embodiment.

In the figure, 1, a light guide structure, 1-1, a light guide inner surface, 1-2, a light guide outer surface, 1-3, a short light guide light inlet end, 1-4, a short light guide tail end, 1-5, a long light guide light inlet end, 1-6, a long light guide tail end, 1-7, a light guide flanging and a 2-PCB.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present invention, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

As shown in fig. 1-4, this embodiment provides a light guiding structure 1, the light guiding structure 1 is fixedly connected with a PCB board 2, a light source incident to the light guiding structure 1 is disposed on the PCB board 2, the PCB board 2 and the light guide are directly positioned to help reduce deviation of the light source, and improve positioning accuracy, the light guiding structure 1 includes a light guiding inner surface 1-1, a light guiding outer surface 1-2, a short light guiding end 1-3, a short light guiding end 1-4, a long light guiding end 1-5 and a long light guiding end 1-6, the light guiding structure 1 is formed as a continuous light guide, light guiding teeth of the short light guiding end 1-4 and light guiding teeth of the long light guiding end 1-6 are spliced in order one by one, the appearance of the light guiding structure is displayed as a whole in a non-lighting state and in a lighting state, the transition joint of the short light guiding end 1-4 and the long light guiding end 1-6 is further configured with a light guiding edge 1-7, and the light guiding teeth of the light guiding edge 1-7 are spliced with the light guiding teeth of the short light guiding end 1-4 and the light guiding edge 1-6 respectively, so that the appearance is displayed in a non-lighting state and has a sharp corner in a strong appearance.

The light guide teeth of the light guide flanges 1-7, the light guide teeth of the short light guide tail ends 1-4 and the light guide teeth of the long light guide tail ends 1-6 are integrally formed through splicing, specifically, the tooth tops of the light guide teeth of the long light guide tail ends 1-6 are arranged corresponding to the tooth tops of the light guide teeth of the short light guide tail ends 1-4, namely, the light guide teeth of the long light guide tail ends 1-6 and the tooth tops of the light guide teeth of the short light guide tail ends 1-4 intersect on the same horizontal plane, the light guide teeth of the light guide flanges 1-7 are formed with first adapting parts and second adapting parts, the tooth tops of the light guide teeth of the first adapting parts are in fit with the outer peripheries of the light guide teeth of the long light guide tail ends 1-6, and the tooth tops of the light guide teeth of the long light guide tail ends 1-6 are arranged corresponding to each other, so that the light guide teeth of the light guide flanges 1-7 and the light guide teeth of the long light guide tail ends 1-6 are in order, and the second adapting parts are in fit with the outer peripheries of the second light guide teeth of the light guide flanges, and the light guide flanges 1-7 are in order.

Preferably, the light guiding teeth of the second adapting portion of the present embodiment extend towards the short light guiding head end 1-4 to form a barrier to the transition junction of the light guiding teeth of the short light guiding tail end 1-4 and the light guiding teeth of the long light guiding tail end 1-6.

According to one embodiment of the invention, the light guide teeth on the inner surface 1-1 of the light guide are provided with pattern teeth, the lighting uniformity can be realized by adjusting the pattern teeth, the pattern teeth can be concave teeth or convex teeth, and the outer surface 1-2 of the light guide is provided with transverse stripes, so that the lighting uniformity of the light guide can be improved.

In this embodiment, a circle of horizontal stripes is disposed on the portion of the short light-guiding light-feeding end 1-3 where no light-guiding teeth are disposed, and it should be understood by those skilled in the art that vertical stripes may be disposed on the portion of the short light-guiding light-feeding end 1-3 where no light-guiding teeth are disposed, and horizontal stripes or vertical stripes may be disposed on the portion of the long light-guiding light-feeding end 1-5 where no light-guiding teeth are disposed, so that light is easier to be incident into the area of the light-guiding light-feeding end where the light-guiding teeth are disposed after passing through the transition of the horizontal stripes or the vertical stripes, thereby improving the dark area of the light-feeding end and finally improving the lighting uniformity of the light guide.

In this embodiment, the light guide teeth are arranged from the head end to the tail end of the short light guide, the light guide teeth at the tail end 1-4 of the short light guide are not arranged according to the extending trend direction of the short light guide, but the light guide teeth at the front section of the tail end 1-4 of the short light guide are continuously arranged, that is, the extending trend direction of the short light guide from the head end to the tail end is different from that of the short light guide, the light guide teeth are arranged from the head end to the tail end of the long light guide, the light guide teeth at the tail end 1-6 of the long light guide are not arranged according to the extending trend direction of the long light guide, but the light guide teeth at the front section of the tail end 1-6 of the long light guide are continuously arranged, that is, the extending trend direction of the light guide teeth at the tail end 1-6 of the long light guide is different from the head end to the tail end, so that the splice positions of the light guide teeth at the tail end 1-4 of the short light guide and the light guide teeth at the tail end 1-6 of the long light guide are spliced in a one-to-one.

Further, the tooth heights of the light guide teeth of the long light guide terminal 1-6 and the light guide teeth of the short light guide terminal 1-4 do not need to be kept consistent, namely, the tooth height of the light guide teeth of the short light guide terminal 1-4 is larger or smaller than the tooth height of the light guide teeth of the long light guide terminal 1-6, and the light guide teeth of the short light guide terminal 1-4 and the long light guide terminal 1-6 can be spliced in order as long as the tooth tops of the light guide teeth of the short light guide terminal 1-4 and the tooth tops of the light guide teeth of the long light guide terminal 1-6 are arranged correspondingly.

The tooth heights of the light guide teeth of the light guide flange 1-7 are larger or smaller than the tooth heights of the light guide teeth of the short light guide tail end 1-4 and the light guide teeth of the long light guide tail end 1-6, the light guide teeth on the light guide flange 1-7 are arranged in the direction of the light guide teeth of the long light guide tail end 1-6, the light guide teeth of the long light guide tail end 1-6 are spliced with the light guide teeth on the light guide flange 1-7 in order, and of course, the light guide teeth on the light guide flange 1-7 can also extend in the direction of the light guide teeth of the short light guide tail end 1-4 to be correspondingly arranged, and are spliced with the light guide teeth of the short light guide tail end 1-4 in order one by one.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A light guide structure (1), wherein the light guide structure (1) is fixedly connected to a PCB board (2), the PCB board (2) is provided with a light source incident on the light guide structure (1), the light guide structure (1) comprises a light guide inner surface (1-1), a light guide outer surface (1-2), a short light guide light inlet end (1-3), a short light guide end (1-4), a long light guide light inlet end (1-5) and a long light guide end (1-6), characterized in that: the light guide structure (1) is formed into a continuous light guide, the arrangement direction of the light guide teeth of the long light guide end (1-6) and the extension direction of the light guide end are different from those of the short light guide end (1-4), and the long light guide end (1-6) is different from the short light guide end (1-4). The tooth tops of the optical teeth of the long optical guide end (1-6) and the tooth tops of the optical teeth of the short optical guide end (1-4) are arranged correspondingly, that is, the tooth tops of the optical teeth of the long optical guide end (1-6) and the tooth tops of the optical teeth of the short optical guide end (1-4) intersect on the same horizontal plane; the optical teeth of the short optical guide end (1-4) and the optical teeth of the long optical guide end (1-6) are spliced neatly one by one, and the transition connection between the short optical guide end (1-4) and the long optical guide end (1-6) is further provided with an optical flanging (1-7), and the optical teeth of the optical flanging (1-7) are respectively spliced neatly one by one with the optical teeth of the short optical guide end (1-4) and the optical teeth of the long optical guide end (1-6).

2. The light guide structure (1) according to claim 1 is characterized in that: the PCB board (2) is distributed at both ends of the light guide structure (1), the light source at each end is at least one LED, and the distance between the LED and the end of the light guide structure (1) is 0.5-1.5 mm.

3. The light guide structure (1) according to claim 1, characterized in that: the inner surface (1-1) of the light guide is provided with pattern teeth, and the pattern teeth are concave teeth or convex teeth.

4. The light guide structure (1) according to claim 1, characterized in that horizontal stripes are provided on the outer surface (1-2) of the light guide.

5. The light guide structure (1) according to claim 1, characterized in that a circle of horizontal stripes is provided on the portion of the short light guide light inlet end (1-3) that does not have light guide teeth.

6. The light guide structure (1) according to claim 1, characterized in that the tooth height of the light guide teeth of the short light guide end (1-4) is greater than or less than the tooth height of the light guide teeth of the long light guide end (1-6).

7. The optical waveguide structure (1) according to claim 1 is characterized in that the tooth height of the optical waveguide teeth of the optical waveguide flange (1-7) is greater than or less than the tooth height of the optical waveguide teeth of the short optical waveguide end (1-4) and the optical waveguide teeth of the long optical waveguide end (1-6).