A light guide structure

Abstract

The present application belongs to the technical field of automobile lamps, and relates to a light guide lamp, in particular to a light guide structure with light entering from 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 end, a long light guide light entering end, a long light guide end, a light guide turnup, the light guide is a continuous light guide, the short light guide end light guide teeth and the long light guide end light guide teeth are spliced neatly one by one, the light guide turnup light guide teeth are also spliced neatly one by one with the short light guide end light guide teeth and the long light guide end light guide teeth, the light guide is fixedly connected with a PCB, and the PCB is provided with a light source. The present application can realize good appearance consistency and lighting uniformity of the light guide with light entering from two ends with complex light emitting surface modeling, and also makes the modeling feeling stronger.

Description

TECHNICAL FIELD

[0001] The application 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 from two ends. BACKGROUND

[0002] With the development of the automobile industry, the shapes of automobile lamps are more and more various, especially array type automobile lamps, which are very popular among consumers because of the full sense of movement and beauty. The array type automobile lamps need to be provided with a relatively long light guide to guide the light emitted by the LED from the PCB to the lampshade. The light guide is generally made of PC material or PMMA material and has good light guiding performance. The light guide structure is an important optical structure in the automobile lamp, and the light guide type lamp has many applications. For a light guide with light entering from two ends and a complex light emitting surface shape, many lamps do not consider making a transition at the joint, and directly use two independent light guides or only make a simple connection. Such a structure can always show two light guides or have a light leakage problem when being lighted up. Therefore, it is of great significance to design a transition structure that can perfectly integrate two light guides into one whole. SUMMARY

[0003] In order to solve the above problems, the application provides a light guide structure, and the technical scheme of the application is as follows.

[0004] A light guide structure is fixedly connected with a PCB, and the PCB is provided with a light source incident to the light guide structure. Direct positioning of the PCB and the light guide helps to reduce light source deviation and improve positioning accuracy. The light guide structure comprises a light guide inner surface, a light guide outer surface, a short light guide light entering end, a short light guide end, a long light guide light entering end and a long light guide end. The light guide structure is formed as a continuous light guide. The light guide teeth of the short light guide end and the light guide teeth of the long light guide end are neatly spliced one by one. The appearance under a non-lighting state and a lighting state both shows that the light guide is one whole. The transition connection part of the short light guide end and the long light guide end is further provided with a light guide turn-up. The light guide teeth of the light guide turn-up are neatly spliced with the light guide teeth of the short light guide end and the light guide teeth of the long light guide end one by one. The appearance under a non-lighting state and a lighting state both shows that there is a sharp corner at the corner, and the modeling sense is stronger.

[0005] 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 0.5-1.5 mm, and the specific distance is determined according to light efficiency, assembly and prevention of light guide melting.

[0006] Further, the light guide inner surface is provided with pattern teeth. The pattern teeth are concave teeth or convex teeth. The light uniformity can be realized by adjusting the pattern teeth.

[0007] Further, the light guide outer surface is provided with horizontal stripes, which can improve the lighting uniformity of the light guide.

[0008] Further, the short light guide light inlet end is provided with a horizontal stripe on the part of the light guide tooth, so that the light is more easily diffused after entering the light guide, thereby improving the dark area of the light inlet end, and finally improving the lighting uniformity of the light guide.

[0009] Further, the light guide tooth of the short light guide end keeps the direction of the front end segment.

[0010] Further, the light guide tooth of the long light guide end keeps the direction of the front end segment.

[0011] The present application sets the arrangement direction of the light guide tooth of the long light guide end and the short light guide end and the extension direction of the light guide end to be different, so that the brightness of the light guide at both ends is high, and a bright line is formed, and in the prior art, light leaks seriously at the corner, that is, at the corner of the short light guide end and the long light guide end, the light of the short light guide is difficult to enter the long light guide, and the light of the long light guide is also difficult to enter the short light guide, resulting in that the light guide tooth at the corner is low in brightness, and it is difficult to maintain the uniformity of the whole light guide.

[0012] Further, the tooth height of the light guide tooth of the short light guide end is greater than or less than the tooth height of the light guide tooth of the long light guide end, as long as the light guide tooth at the junction is neatly spliced and uniformly lit.

[0013] Further, the tooth height of the light guide tooth of the light guide turn-up is greater than or less than the tooth height of the light guide tooth of the short light guide end and the tooth height of the light guide tooth of the long light guide end, as long as the light guide tooth of the light guide turn-up and the light guide tooth on the light guide are neatly spliced and uniformly lit.

[0014] The technical scheme of the present application has the following beneficial effects compared with the prior art:

[0015] 1. The present application neatly splices the light guide tooth of the short light guide end and the light guide tooth of the long light guide end, and the transition connection part of the short light guide end and the long light guide end is also provided with a light guide turn-up, the light guide tooth of the light guide turn-up is neatly spliced with the light guide tooth of the short light guide end and the light guide tooth of the long light guide end, respectively, to realize the appearance consistency and lighting consistency of the transition section of the two-end light guide with complex light emitting surface modeling.

[0016] 2. The present application sets the light guide turn-up at the transition connection part of the short light guide end and the long light guide end, without adding new parts and designing a too complex transition structure, so that the cost is not increased, and at the same time, the processing is not inconvenient.

[0017] 3. The transition connection of the short light guide end and the long light guide end of the present application is provided with a light guide turn-up, and the light guide teeth are also designed on the light guide turn-up. In the non-illuminated state and the illuminated state, the appearance shows a sharp corner at the corner, and the modeling is stronger, which is deeply loved by consumers. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the back structure of the light guide of the present embodiment.

[0019] Figure 2 The figure is a schematic diagram of the front structure of the light guide of the present embodiment.

[0020] Figure 3 The figure is an illuminated diagram of the present embodiment.

[0021] Figure 4 The figure is a schematic diagram of the splicing of the light guide teeth of the light guide turn-up, 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.

[0022] In the figure: 1, light guide structure, 1-1, inner surface of the light guide, 1-2, outer surface of the light guide, 1-3, short light guide light inlet end, 1-4, short light guide end, 1-5, long light guide light inlet end, 1-6, long light guide end, 1-7, light guide turn-up, 2, PCB board. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0024] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component, and / or combination thereof.

[0025] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0026] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings generally for the purpose of describing and simplifying the present application, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0027] For the purpose of description, spatial relative terms, such as "above", "upper", "up", "below", "lower", etc., can be used herein for describing the spatial relationship between one device or feature and another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, the device described as "above" or "above" the other device or structure will be positioned "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein should be interpreted accordingly.

[0028] In addition, it should be noted that the use of the terms "first", "second", etc. to describe various components is merely intended to distinguish one component from another, and the above terms do not have special meanings unless otherwise stated, and therefore cannot be construed as limiting the scope of protection of the present application.

[0029] As Figures 1-4As shown, the embodiment provides a light guide structure 1, the light guide structure 1 is fixedly connected with a PCB 2, the PCB 2 is provided with a light source incident to the light guide structure 1, the direct positioning of the PCB 2 and the light guide helps to reduce the light source deviation, improve the positioning accuracy, the light guide structure 1 includes 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, the light guide structure 1 is formed as a continuous light guide, the light guide teeth of the short light guide end 1-4 and the light guide teeth of the long light guide end 1-6 are spliced neatly one by one, the appearance under the non-lighting state and the lighting state shows that the light guide is a whole, the transition connection of the short light guide end 1-4 and the long light guide end 1-6 is further provided with a light guide turn-up 1-7, the light guide teeth of the light guide turn-up 1-7 are spliced neatly with the light guide teeth of the short light guide end 1-4 and the light guide teeth of the long light guide end 1-6 respectively, so that the appearance under the non-lighting state and the lighting state shows that there is a sharp corner at the corner, and the modeling feeling is stronger.

[0030] The light guide teeth of the light guide turn-up 1-7, the light guide teeth of the short light guide end 1-4 and the light guide teeth of the long light guide end 1-6 of the embodiment are formed as a whole through splicing, specifically, the tooth top of the light guide teeth of the long light guide end 1-6 is correspondingly arranged with the tooth top of the light guide teeth of the short light guide end 1-4, that is, the tooth top of the light guide teeth of the long light guide end 1-6 and the tooth top of the light guide teeth of the short light guide end 1-4 intersect on the same horizontal plane, the light guide teeth of the light guide turn-up 1-7 are formed with a first adaptive part and a second adaptive part, the first adaptive part is attached to the outer periphery of the light guide teeth of the long light guide end 1-6, and the tooth top of the light guide teeth of the first adaptive part and the tooth top of the light guide teeth of the long light guide end 1-6 are correspondingly arranged, so that the light guide teeth of the light guide turn-up 1-7 and the light guide teeth of the long light guide end 1-6 are spliced neatly, and the second adaptive part is attached to the outer periphery of the second light guide teeth, so that the light guide teeth of the light guide turn-up 1-7 and the light guide teeth of the short light guide end 1-4 are spliced neatly.

[0031] Preferably, the light guide teeth of the second adaptive part of the embodiment extend towards the short light guide end 1-4 to form an obstruction at the transition connection of the light guide teeth of the short light guide end 1-4 and the light guide teeth of the long light guide end 1-6.

[0032] According to one embodiment of the present application, the light guide teeth on the light guide inner surface 1-1 are provided as patterned teeth, the lighting uniformity can be achieved by adjusting the patterned teeth, the patterned teeth can be concave teeth or convex teeth, and horizontal stripes are provided on the light guide outer surface 1-2, which can improve the lighting uniformity of the light guide.

[0033] The part of the short light guide light inlet end 1-3 without the light guide teeth is provided with a circle of horizontal stripes, and those skilled in the art should understand that the part of the short light guide light inlet end 1-3 without the light guide teeth can also be provided with vertical stripes, and the part of the long light guide light inlet end 1-5 without the light guide teeth can also be provided with horizontal stripes or vertical stripes, so that the light is more easily incident to the area of the light guide provided with the light guide teeth after the transition of the horizontal stripes or the vertical stripes, thereby improving the dark area of the light inlet end and ultimately improving the lighting uniformity of the light guide.

[0034] The short light guide is arranged with the light guide teeth from the first end to the last end, the light guide teeth of the short light guide last end 1-4 are not arranged according to the direction of the extension trend of the short light guide, but continue to maintain the direction arrangement of the light guide teeth of the front section of the short light guide last end 1-4, that is, the light guide teeth of the short light guide last end 1-4 are not the same as the direction of the extension trend of the short light guide from the first end to the last end, the long light guide is arranged with the light guide teeth from the first end to the last end, the light guide teeth of the long light guide last end 1-6 are not arranged according to the direction of the extension trend of the long light guide, but continue to maintain the direction arrangement of the light guide teeth of the front section of the long light guide last end 1-6, that is, the light guide teeth of the long light guide last end 1-6 are not the same as the direction of the extension trend of the long light guide from the first end to the last end, thereby making the light guide teeth of the short light guide last end 1-4 and the light guide teeth of the long light guide last end 1-6 splice neatly.

[0035] Further, the tooth height of the light guide teeth of the long light guide last end 1-6 and the light guide teeth of the short light guide last end 1-4 does not need to be consistent, that is, the tooth height of the light guide teeth of the short light guide last end 1-4 is greater than or less than the tooth height of the light guide teeth of the long light guide last end 1-6, as long as the tooth top of the light guide teeth of the short light guide last end 1-4 is correspondingly arranged with the tooth top of the light guide teeth of the long light guide last end 1-6, so that the light guide teeth of the short light guide last end 1-4 and the long light guide last end 1-6 splice neatly.

[0036] The tooth height of the light guide teeth of the light guide turnup 1-7 is greater than or less than the tooth height of the light guide teeth of the short light guide last end 1-4 and the long light guide last end 1-6, the light guide teeth on the light guide turnup 1-7 are arranged according to the direction of the light guide teeth of the long light guide last end 1-6, and the light guide teeth of the long light guide last end 1-6 splice neatly with the light guide teeth on the light guide turnup 1-7, of course, the light guide teeth on the light guide turnup 1-7 can also be correspondingly arranged according to the direction of the light guide teeth of the short light guide last end 1-4, and also splice neatly with the light guide teeth of the short light guide last end 1-4.

[0037] The embodiments of the application are described in detail above with reference to the accompanying drawings, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the application.

Claims

1. A light guide structure (1) fixedly connected with a PCB board (2), wherein the PCB board (2) is provided with a light source incident to the light guide structure (1), and 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 tail end (1-4), a long light guide light inlet end (1-5) and a long light guide tail end (1-6), characterized in that: The light guide structure (1) is formed as a continuous light guide, the arrangement direction of the light guide teeth of the long light guide end (1-6) and the short light guide end (1-4) is different from the extension direction of the light guide end, the tooth top of the light guide teeth of the long light guide end (1-6) is arranged correspondingly with the tooth top of the light guide teeth of the short light guide end (1-4), that is, the tooth top of the light guide teeth of the long light guide end (1-6) intersects with the tooth top of the light guide teeth of the short light guide end (1-4) on the same horizontal plane; The light guide teeth of the short light guide end (1-4) and the light guide teeth of the long light guide end (1-6) are neatly spliced one by one, and the transition connection part of the short light guide end (1-4) and the long light guide end (1-6) is further provided with a light guide turnup (1-7), the light guide teeth of the light guide turnup (1-7) are neatly spliced one by one with the light guide teeth of the short light guide end (1-4) and the light guide teeth of the long light guide end (1-6) respectively.

2. The light guide structure (1) according to claim 1, 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 0.5-1.5mm.

3. The light guide structure (1) according to claim 1, characterized in that: The light guide inner surface (1-1) 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: The light guide outer surface (1-2) is provided with horizontal stripes.

5. The light guide structure (1) according to claim 1, characterized in that: A circle of horizontal stripes is arranged on the part of the short light guide light inlet end (1-3) without long 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 or smaller than the tooth height of the light guide teeth of the long light guide end (1-6).

7. The light guide structure (1) according to claim 1, characterized in that: The tooth height of the light guide teeth of the light guide turnup (1-7) is greater or smaller than the tooth height of the light guide teeth of the short light guide end (1-4) and the light guide teeth of the long light guide end (1-6).

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