CN221648270U - Light guide, car light and vehicle - Google Patents

Abstract

The present application provides a light guide, a headlight and a vehicle, and relates to the field of vehicle technology. The light guide comprises a light guide body, and the light guide body comprises a first light guide surface and a second light guide surface. The first light guide surface and the second light guide surface are arranged in sequence along the circumference of the light guide body. By arranging an optical pattern on the first light guide surface, the optical pattern can disperse the light emitted along the first light guide surface. In this way, the emitted light is emitted from multiple different angles of the first light guide surface, and the emitted light rays intersect with each other, thereby improving the optical diffusion ability of the light guide and improving the distribution uniformity of the emitted light of the light guide. Along the circumference of the light guide body, a docking surface is provided between the first light guide surface and the second light guide surface. By arranging the docking surface, the light guide body and the vehicle can be docked, so as to facilitate the subsequent installation of the light guide in the vehicle body. The headlight comprises the above-mentioned light guide, thereby improving the light emission uniformity of the headlight, simplifying the installation process of the headlight, and improving the use performance of the vehicle.

Description

Light guide, lamp and vehicle

Technical Field

The present application relates to the technical field of vehicles, and in particular to a light guide, a vehicle lamp and a vehicle.

Background Art

With the development of the automobile industry, headlights, as an important accessory for the interior design of vehicles, also play an important role in the overall vehicle design. Customers are paying more and more attention to the appearance, overall compactness and luminous area of headlights.

In the prior art, light guide technology is often used to improve the uniformity of light distribution of car lights and reduce dark areas. By setting light guide teeth on the back of the light guide, the basic requirements of optical light effect and uniformity of the car lights can be met. The light emitting surface of the existing light guide is mostly a flat light emitting surface or a circular arc light emitting surface.

However, existing vehicle lamps have the problem of poor light output effect.

Utility Model Content

The present application provides a light guide, a vehicle lamp and a vehicle. The light guide improves the distribution uniformity of the emitted light, improves the light emission uniformity of the vehicle lamp and improves the performance of the vehicle.

In a first aspect, the present application provides a light guide for a vehicle lamp, wherein the light guide comprises a light guide body, wherein the light guide body comprises a first light guide surface and a second light guide surface, wherein the first light guide surface and the second light guide surface are arranged in sequence along the circumference of the light guide body, and both the first light guide surface and the second light guide surface extend along the extension direction of the light guide body; an optical pattern is arranged on the first light guide surface.

Along the circumference of the light guide body, a butt joint surface is provided between the first light guide surface and the second light guide surface. The butt joint surface extends along the radial direction of the light guide body and is used for butt joint with a vehicle body.

In the above light guide, optionally, the first light guide surface and the second light guide surface are connected via a butt joint surface; the butt joint surface includes a first butt joint surface and a second butt joint surface.

Along the circumference of the light guide body, the first butt joint surface connects the first end of the first light guide surface and the first end of the second light guide surface, and the second butt joint surface connects the second end of the first light guide surface and the second end of the second light guide surface.

In the above light guide, optionally, the light guide body includes a first light guide part and a second light guide part connected to each other, the first light guide surface is a surface of the first light guide part facing away from the second light guide part, and the second light guide surface is a surface of the second light guide part facing away from the first light guide part.

The cross-section of the first light guide portion and the cross-section of the second light guide portion are both semicircular, the cross-section radius of the first light guide portion is smaller than the cross-section radius of the second light guide portion, and the center of the cross-section of the first light guide portion coincides with the center of the cross-section of the second light guide portion.

The cross section is perpendicular to the extension direction of the light guide body.

In the above light guide, optionally, the optical pattern extends along an extension direction of the light guide body.

The optical pattern is an arc-shaped protrusion on the surface of the first light guide surface; and/or the optical pattern is an arc-shaped depression on the surface of the first light guide surface.

In the above light guide, optionally, a first protrusion is provided at a first end of the first light guide surface close to the second light guide surface, and a second protrusion is provided at a second end of the first light guide surface close to the second light guide surface.

On the first light guide surface, a plurality of recesses are arranged between the first protrusion and the second protrusion, and the plurality of recesses are arranged in sequence from the first end to the second end of the first light guide surface.

In the above light guide, optionally, there are five recesses.

In two adjacent recesses, there is a first connecting line between the midpoint of one recess and the center of the cross-section of the first light-guiding portion, and there is a second connecting line between the midpoint of the other recess and the center of the cross-section of the first light-guiding portion, and the angle between the first connecting line and the second connecting line is greater than or equal to 20 degrees and less than or equal to 30 degrees.

And/or, the five recesses include a central recess and four side recesses, there is a central line between the first end of the first light-guiding surface and the second end of the first light-guiding surface, there is a third line between the midpoint of the central recess and the center of the cross-section of the first light-guiding portion, and the central line and the third line are perpendicular to each other; two of the side recesses are located on one side of the central recess, and the other two of the side recesses are located on the other side of the central recess.

In the above light guide, optionally, a middle protrusion is provided between adjacent recesses, and the cross section of the middle protrusion along the direction perpendicular to the extension direction of the light guide body is in an arc shape.

In the above-mentioned light guide, optionally, a light guide tooth groove is provided on the side of the second light guide part away from the first light guide part, the light guide tooth groove extends along the extension direction of the light guide body, a plurality of light guide teeth are provided in the light guide tooth groove, and the plurality of light guide teeth are distributed at intervals along the extension direction of the light guide body.

In a second aspect, the present application provides a vehicle lamp, comprising a light source and the above-mentioned light guide, wherein the light guide is arranged on the light emitting side of the light source.

In a third aspect, the present application provides a vehicle, comprising a vehicle body and the above-mentioned headlight, wherein the headlight is arranged on the vehicle body.

The present application provides a light guide, a headlight and a vehicle. The light guide includes a light guide body, the light guide body includes a first light guide surface and a second light guide surface, the first light guide surface and the second light guide surface are arranged in sequence along the circumference of the light guide body, and an optical pattern is provided on the first light guide surface, so that the optical pattern can disperse the light emitted along the first light guide surface, so that the emitted light is emitted from multiple different angles of the first light guide surface, and the emitted light rays intersect with each other, thereby improving the optical diffusion ability of the light guide and improving the distribution uniformity of the emitted light of the light guide; along the circumference of the light guide body, a docking surface is provided between the first light guide surface and the second light guide surface, and by providing the docking surface, the light guide body and the vehicle can be docked, so as to facilitate the subsequent installation of the light guide in the vehicle body; the headlight includes the above-mentioned light guide, which improves the light emission uniformity of the headlight, simplifies the installation process of the headlight, and improves the performance of the vehicle.

The structure of the present application and its other practical purposes and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic structural diagram of a light guide provided by an embodiment of the present application at a first viewing angle;

FIG2 is a schematic structural diagram of a light guide provided by an embodiment of the present application at a second viewing angle;

FIG3a is a first structural schematic diagram of a cross section of a light guide provided in an embodiment of the present application;

FIG. 3 b is a second structural schematic diagram of the cross section of the light guide provided in an embodiment of the present application.

Description of reference numerals:

100: first light guide portion; 200: second light guide portion; 300: butt joint surface;

101: first light guide surface; 102: optical pattern;

111: first protrusion; 112: second protrusion; 113: first depression; 114: second depression; 115: third depression; 116: fourth depression; 117: fifth depression; 118: middle protrusion; 119: connecting protrusion; 120: connecting depression;

121: first connection line; 122: second connection line; 123: third connection line; 124: fourth connection line; 125: fifth connection line; 126: center connection line;

201: second light guide surface; 202: light guide teeth;

301: first butt joint surface; 302: second butt joint surface.

The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

DETAILED DESCRIPTION

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

The inventor of the present application found in the actual research process that with the development of the modern automobile industry, customers have higher and higher requirements for the level of automobile styling. Customers also have higher and higher requirements for the visible parts of the vehicle appearance, especially the headlights. Existing headlights need to have aesthetics while being functional. Headlights include vehicle indicator lights and vehicle atmosphere lights. The vehicle indicator lights mainly serve as safety reminders, and the vehicle atmosphere lights are decorative lights that create an atmosphere.

In the prior art, light guide technology is often used to improve the uniformity of light distribution of car lights and reduce dark areas. By setting light guide teeth on the back of the light guide, the basic requirements of optical light effect and uniformity of the car lights can be met. The light emitting surface of the existing light guide is mostly a flat light emitting surface or a circular arc light emitting surface.

However, when the light-emitting surface of the light guide is a plane or an arc surface, the light guide is not favorable for the diffusion of the emitted light. The light guides with a plane light-emitting surface and an arc light-emitting surface have uneven brightness gradient after lighting, and are prone to easily perceptible light-dark transition line problems.

In view of this, an embodiment of the present application provides a light guide, a headlight and a vehicle, wherein the light guide comprises a light guide body, the light guide body comprises a first light guide surface and a second light guide surface, the first light guide surface and the second light guide surface are arranged in sequence along the circumference of the light guide body, and an optical pattern is provided on the first light guide surface, so that the light emitted along the first light guide surface can be dispersed, so that the emitted light is emitted from a plurality of different angles of the first light guide surface, and the emitted light rays cross each other, thereby improving the optical diffusion capability of the light guide and improving the uniformity of distribution of the emitted light of the light guide; along the circumference of the light guide body, a docking surface is provided between the first light guide surface and the second light guide surface, and by providing the docking surface, the light guide body and the vehicle can be docked, thereby facilitating the subsequent installation of the light guide in the vehicle body; the headlight comprises the above-mentioned light guide, thereby improving the light emission uniformity of the headlight, simplifying the installation process of the headlight, and improving the performance of the vehicle.

In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

In a first aspect, the present application provides a light guide for a vehicle lamp, wherein the light guide comprises a light guide body, wherein the light guide body comprises a first light guide surface 101 and a second light guide surface 201, wherein the first light guide surface 101 and the second light guide surface 201 are arranged in sequence along the circumference of the light guide body, and the first light guide surface 101 and the second light guide surface 201 both extend along the extension direction of the light guide body; an optical pattern 102 is provided on the first light guide surface 101.

Along the circumference of the light guide body, a docking surface 300 is provided between the first light guide surface 101 and the second light guide surface 201 . The docking surface 300 extends along the radial direction of the light guide body and is used for docking with a vehicle body.

For example, as shown in Figures 1, 2 and 3, a first light guide surface 101 and a second light guide surface 201 are arranged on the outer surface of the light guide body along the circumference of the light guide body, wherein the first light guide surface 101 is provided with an optical pattern 102. When the light propagates in the light guide body, after the light encounters the optical pattern 102, the optical pattern 102 can change the refraction angle of the light, and then the light is emitted. In this way, by setting the optical pattern 102, the angle of light emission is changed, and the distribution uniformity of the light emitted from the first light guide surface 101 is improved.

For example, along the circumference of the light guide body, there is a docking surface 300 between the first light guide surface 101 and the second light guide surface 201. By setting the docking surface 300, the docking surface 300 can be docked with the corresponding position of the light guide set on the vehicle body, simplifying the installation steps when the light guide is installed on the vehicle body. Among them, the light guide body can directly abut against the vehicle body through the docking surface 300, and the light guide body can also bond its own docking surface 300 to the vehicle body through an adhesive.

As a feasible implementation manner, a light guide tooth 202 groove is provided on the side of the second light guide part 200 facing away from the first light guide part 100, and the light guide tooth 202 groove extends along the extension direction of the light guide body. A plurality of light guide teeth 202 are provided in the light guide tooth 202 groove, and the plurality of light guide teeth 202 are distributed at intervals along the extension direction of the light guide body.

For example, referring to FIG. 1 and FIG. 2 , during light propagation, part of the light is refracted on the first light guide surface 101 , and another part of the light is irradiated to the light guide teeth 202 , which refract the light to the first light guide surface 101 , and then emit from the first light guide surface 101 .

There are intersecting ridges between the light guide tooth groove and the second light guide surface 201, which cannot effectively reflect light, resulting in shadows on the illuminated surface of the light guide body after light is emitted. However, by setting the optical pattern 102, the optical pattern 102 can change the optical path of the outgoing light from the first light guide surface 101, improve the light emission uniformity of the light guide, and avoid the appearance of shadows.

As a feasible implementation, the first light guide surface 101 and the second light guide surface 201 are connected via a butt joint surface 300 ; the butt joint surface 300 includes a first butt joint surface 301 and a second butt joint surface 302 .

Along the circumference of the light guide body, the first butt joint surface 301 connects the first end of the first light guide surface 101 and the first end of the second light guide surface 201 , and the second butt joint surface 302 connects the second end of the first light guide surface 101 and the second end of the second light guide surface 201 .

In some embodiments, the first docking surface 301 is respectively connected to the first end of the first light guide surface 101 and the first end of the second light guide surface 201, so that a first docking protrusion is formed between the first docking surface 301, the first end of the first light guide surface 101, and the second end of the second light guide surface 201 relative to the circumference of the light guide body; similarly, the second docking surface 302, the second end of the first light guide surface 101, and the second end of the second light guide surface 201 form a second docking protrusion relative to the circumference of the light guide body; correspondingly, a first body depression and a second body depression are provided on the body, the first body depression and the first docking protrusion are snap-fitted, and the second body depression and the second docking protrusion are snap-fitted, so that the installation process of the body and the light guide is simplified, and the light guide can be accurately docked with the preset position of the body during installation, thereby improving the installation efficiency of the light guide and the body.

In other embodiments, a body docking surface corresponding to the first docking surface 301 and the second docking surface 302 is provided on the body. When the body docking surface is connected to the first docking surface 301 and the second docking surface 302, a sealant or adhesive can be provided between the first docking surface 301 and the second docking surface 302 and the body docking surface. The first docking surface 301 and the second docking surface 302 are adhesively connected to the body docking surface by utilizing the viscosity of the sealant or adhesive to improve the connection strength between the body docking surface and the light guide body. In addition, the sealant can also be used to fill the gap between the body docking surface and the light guide body to improve the sealing between the light guide body and the body.

As a feasible implementation, the light guide body includes a first light guide part 100 and a second light guide part 200 connected to each other, the first light guide surface 101 is the surface of the first light guide part 100 facing away from the second light guide part 200, and the second light guide surface 201 is the surface of the second light guide part 200 facing away from the first light guide part 100.

The cross-sections of the first light guide part 100 and the second light guide part 200 are both semicircular, the cross-section radius of the first light guide part 100 is smaller than the cross-section radius of the second light guide part 200 , and the center of the cross-section of the first light guide part 100 coincides with the center of the cross-section of the second light guide part 200 .

The cross section is perpendicular to the extension direction of the light guide body.

For example, referring to FIG. 2 and FIG. 3a, the cross-sectional radius of the first light guide portion 100 is smaller than the cross-sectional radius of the second light guide portion 200, and the center of the cross section of the first light guide portion 100 coincides with the center of the cross section of the second light guide portion 200. In this way, a docking surface 300 can be formed between the first light guide surface 101 and the second light guide surface 201 for docking with the vehicle body.

For example, the first light guide part 100 and the second light guide part 200 can be any one of organic glass, polystyrene, and polycarbonate. These materials not only have the advantage of high transparency, but also are less affected by temperature and humidity, have the advantage of high stability, and are conducive to improving the service life of the light guide.

As a feasible implementation, the optical pattern 102 extends along the extension direction of the light guide body.

The optical pattern 102 is an arc-shaped protrusion on the surface of the first light guide surface 101 ; and/or the optical pattern 102 is an arc-shaped depression on the surface of the first light guide surface 101 .

For example, by setting an optical pattern 102 on the first light guide surface 101, the optical pattern 102 extends along the extension direction of the light guide body, and the optical pattern 102 can be a convexity or a concaveity of the first light guide surface 101. In the process of light propagation in the light guide body, the first light guide surface 101 emits the light emitted from the optical pattern 102 from multiple different angles, and the emitted light rays cross each other. Compared with the case where the optical pattern 102 is not set, the optical path of part of the light emitted from the first light guide surface 101 is changed, and the distribution uniformity of the light emitted from the first light guide surface 101 is improved.

In some embodiments, the optical pattern 102 is a protrusion on the first light guide surface 101. Along the circumference of the light guide body, from the first end of the first light guide surface 101 to the second end of the first light guide surface 101, a plurality of protrusions are arranged on the first light guide surface 101. During the propagation of light in the light guide body, the light converges at the protrusions, thus improving the light utilization rate and the brightness of the light emitted from the first light guide surface 101.

In some embodiments, the optical pattern 102 is a depression on the first light guide surface 101. Along the circumference of the light guide body, from the first end of the first light guide surface 101 to the second end of the first light guide surface 101, a plurality of depressions are provided on the first light guide surface 101. During the propagation of light in the light guide body, the depressions increase the emission angle of the light, which is beneficial to improving the uniformity of the light after emission.

In some other embodiments, depressions and protrusions are arranged at intervals on the first light guide surface 101. Along the circumference of the light guide body, along the first end of the first light guide surface 101 to the second end of the first light guide surface 101, the depressions and protrusions on the first light guide surface 101 are arranged at intervals, and the depressions and protrusions arranged at intervals on the first light guide surface 101 present a water ripple effect, the protrusions can converge the light emitted from the light guide body, and the depressions can diffuse the light emitted from the light guide body, so that the light emitted through the first light guide surface 101 has the characteristics of high brightness and high uniformity.

For example, the optical pattern 102 may be in an arc shape, which is smooth. Setting the optical pattern 102 on the first light guide surface 101 in an arc shape can improve the uniformity of light emitted from the light guide body.

As a feasible implementation, a first protrusion 111 is provided at a first end of the first light guide surface 101 close to the second light guide surface 201 , and a second protrusion 112 is provided at a second end of the first light guide surface 101 close to the second light guide surface 201 .

On the first light guide surface 101 , a plurality of recesses are disposed between the first protrusion 111 and the second protrusion 112 , and the plurality of recesses are sequentially arranged from the first end to the second end of the first light guide surface 101 .

For example, as shown in Figures 2, 3a and 3b, a first protrusion 111 is provided at the first end of the first light guide surface 101 close to the second light guide surface 201, and a second protrusion 112 is provided at the second end of the first light guide surface 101 close to the second light guide surface 201. By providing the first protrusion 111 and the second protrusion 112, the convergence ability of the first light guide part 100 on the outgoing light can be improved, and the brightness of the light emitted from the first light guide surface 101 can be improved.

For example, a plurality of recesses are sequentially arranged between the first protrusion 111 and the second protrusion 112 along the first end to the second end of the first light guide surface 101, and the plurality of recesses can diffuse the light emitted from the first light guide surface 101, so that the emitted light is emitted from a plurality of different angles of the first light guide surface 101, and the emitted light crosses each other, thereby improving the uniformity of the light emitted from the first light guide surface 101.

As a feasible implementation, a middle protrusion 118 is provided between adjacent recesses, and the cross section of the middle protrusion 118 along the direction perpendicular to the extension of the light guide body is in an arc shape.

In some embodiments, a plurality of recesses are provided between the first protrusion 111 and the second protrusion 112 along the first end to the second end of the first light guide surface 101, and an intermediate protrusion 118 is provided between adjacent recesses, so that the first protrusion 111, the second protrusion 112 and the intermediate protrusion 118 are used to converge the outgoing light of the first light guide surface 101 to improve the brightness of the outgoing light, and the plurality of recesses are used to diverge the outgoing light of the first light guide surface 101 to improve the uniformity of the outgoing light.

For example, the cross-sections of the middle protrusion 118, the first protrusion 111 and the second protrusion 112 along the extension direction perpendicular to the light guide body are arc-shaped. Thus, the smooth arc shape effectively improves the uniformity of the emitted light.

As a feasible implementation, there are five recesses.

In two adjacent recesses, a first connecting line 121 is provided between the midpoint of one recess and the center of the cross section of the first light guide portion 100, and a second connecting line 122 is provided between the midpoint of the other recess and the center of the cross section of the first light guide portion 100, and an angle between the first connecting line 121 and the second connecting line 122 is greater than or equal to 20 degrees and less than or equal to 30 degrees.

As a feasible implementation manner, the five recesses include a central recess and four side recesses, a central line 126 is provided between the first end of the first light guide surface 101 and the second end of the first light guide surface 101, a third line 123 is provided between the midpoint of the central recess and the center of the cross section of the first light guide portion 100, and the central line 126 and the third line 123 are perpendicular to each other; two of the side recesses are located on one side of the central recess, and the other two side recesses are located on the other side of the central recess.

For example, a first protrusion 111 is provided at the first end of the first light guide surface 101 close to the second light guide surface 201, and a second protrusion 112 is provided at the second end of the first light guide surface 101 close to the second light guide surface 201; along the circumference of the light guide body, from the first end to the second end of the first light guide surface 101, five recesses are provided between the first protrusion 111 and the second protrusion 112, and from the first end to the second end of the first light guide surface 101, the five recesses are sequentially a first recess 113, a second recess 114, a third recess 115, a fourth recess 116 and a fifth recess 117, so that the first recess 113 and the second recess 114 are provided on one side of the third recess 115, and the fourth recess 116 and the fifth recess 117 are provided on the other side of the third recess 115, therefore, the third recess 115 is in the middle of the recess, recorded as the central recess. There is a first connecting line 121 between the midpoint of the first recess 113 and the center of the cross section of the first light guide portion 100, there is a second connecting line 122 between the midpoint of the second recess 114 and the center of the cross section of the first light guide portion 100, there is a third connecting line 123 between the midpoint of the third recess 115 and the center of the cross section of the first light guide portion 100, there is a fourth connecting line 124 between the midpoint of the fourth recess 116 and the center of the cross section of the first light guide portion 100, there is a fifth connecting line 125 between the midpoint of the fifth recess 117 and the center of the cross section of the first light guide portion 100.

For example, if the angles between two adjacent lines are equal, the position of the angles refers to α shown in FIG. 3a, when the angle between the first line 121 and the second line 122 is less than 20 degrees, the angle between the second line 122 and the third line 123 is less than 20 degrees, the angle between the third line 123 and the fourth line 124 is less than 20 degrees, and the angle between the fourth line 124 and the fifth line 125 is less than 20 degrees, then along the circumference of the light guide body, the first line 121 and the fifth line 125 are The angle between the first connecting line 121 and the second connecting line 122 is less than 80 degrees, which will reduce the light output area of the first light guide surface 101, is not conducive to the diffusion of the light emitted by the light guide body by the first light guide surface 101, reduces the number of light emitted by the light guide body, and reduces the brightness of the light emitted by the light guide body. Therefore, the present application sets the angle between the first connecting line 121 and the second connecting line 122 to be greater than or equal to 20 degrees and less than or equal to 30 degrees. Correspondingly, the angle between any two adjacent connecting lines is set to be greater than or equal to 20 degrees and less than or equal to 30 degrees.

For example, if the angles between two adjacent lines are equal, the position of the angles refers to α shown in FIG. 3a, when the angle between the first line 121 and the second line 122 is greater than 30 degrees, the angle between the second line 122 and the third line 123 is greater than 30 degrees, the angle between the third line 123 and the fourth line 124 is greater than 30 degrees, and the angle between the fourth line 124 and the fifth line 125 is greater than 30 degrees, then along the circumference of the light guide body, the angle between the first line 121 and the fifth line 125 is greater than 120 degrees. , increasing the light output area of the first light guide surface 101, but this will result in a reduction in the area of the second light guide surface 201 used to connect to the vehicle body, which is not conducive to the installation process of the light guide and the vehicle body; or an additional light guide bracket is required to install the second light guide part 200 and the vehicle body. Therefore, the present application sets the angle between the first connecting line 121 and the second connecting line 122 to be greater than or equal to 20 degrees and less than or equal to 30 degrees. Correspondingly, the angle between any two adjacent connecting lines is set to be greater than or equal to 20 degrees and less than or equal to 30 degrees.

In some embodiments, if the angle between the first connecting line 121 and the second connecting line 122 is equal to 24 degrees, the angle between the second connecting line 122 and the third connecting line 123 is equal to 24 degrees, if the angle between the third connecting line 123 and the fourth connecting line 124 is equal to 24 degrees, and the angle between the fourth connecting line 124 and the fifth connecting line 125 is equal to 24 degrees, the center connecting line 126 between the first end of the first light guide surface 101 and the second end of the first light guide surface 101 and the third connecting line 123 are perpendicular to each other. At this time, when the center of the cross section of the first light guide part 100 coincides with the center of the cross section of the second light guide part 200, the center connecting line 126 passes through the center of the cross section of the first light guide part 100, so that the cross section of the first light guide part 100 and the cross section of the second light guide part 200 are both semicircular, and the light emitting area of the first light guide part 100 is guaranteed under the condition that the second light guide part 200 and the vehicle body are installed.

In other embodiments, if the angle between the first connecting line 121 and the second connecting line 122 is equal to 24 degrees, the angle between the second connecting line 122 and the third connecting line 123 is equal to 24 degrees, the angle between the third connecting line 123 and the fourth connecting line 124 is equal to 24 degrees, and the angle between the fourth connecting line 124 and the fifth connecting line 125 is equal to 24 degrees, the center connecting line 126 between the first end of the first light guide surface 101 and the second end of the first light guide surface 101 and the third connecting line 123 are perpendicular to each other. At this time, when the center of the cross section of the first light guide part 100 coincides with the center of the cross section of the second light guide part 200, and the center connecting line 126 does not pass through the center of the cross section of the first light guide part 100, the cross section of the first light guide part 100 can be a sector greater than 180 degrees, and the cross section of the second light guide part 200 can be a sector less than 180 degrees. In this way, light guides with different cross sections can be selected for installation corresponding to the actual installation position of the vehicle body.

For example, a connection recess 120 is provided between the first end of the first light guide part 100 and the first docking surface 301, and a connection protrusion 119 is provided between the first end of the second light guide part 200 and the first docking surface 301; a connection recess 120 is provided between the second end of the first light guide part 100 and the second docking surface 302, and a connection protrusion 119 is provided between the second end of the second light guide part 200 and the second docking surface 302. Both the connection protrusion 119 and the connection recess 120 are arc-shaped. The connection protrusion 119 can converge the light emitted from the light guide body, and the connection recess 120 can diffuse the light emitted from the light guide body, so that the light emitted through the first light guide surface 101 has the characteristics of high brightness and high uniformity.

For example, the cross-sectional radius of the first light guide portion 100 is in the range of 1.5mm-2.5mm, the cross-sectional radius of the second light guide portion 200 is in the range of 2.0mm-3.0mm, the radius of the middle protrusion 118 is in the range of 0.1mm-0.5mm, the radius of the connecting protrusion 119 is in the range of 0.1mm-0.5mm, and the radius of the connecting recess 120 is in the range of 0.1mm-0.5mm.

For example, by limiting the radius range of the middle protrusion 118, the connecting protrusion 119 and the connecting recess 120 to 0.1 mm-0.5 mm, it is possible to avoid the formation of a bright line with concentrated brightness when light is emitted.

In some embodiments, the cross-sectional radius of the first light guide portion 100 is 2.0 mm, the cross-sectional radius of the second light guide portion 200 is in the range of 2.5 mm, the radius of the middle protrusion 118 is 0.2 mm, the radius of the connecting protrusion 119 is 0.2 mm, and the radius of the connecting recess 120 is 0.2 mm. The optical simulation results show that the light area transitions smoothly without obvious light and dark cutoff lines.

In a second aspect, the present application provides a vehicle lamp, comprising a light source and the above-mentioned light guide, wherein the light guide is arranged on the light emitting side of the light source.

For example, the light emitted by the light source enters the light guide body from one end of the light guide and propagates inside the light guide body. The light emitted by the light source is refracted by the light guide teeth 202 and emitted to the first light guide surface 101. The optical pattern 102 on the first light guide surface 101 is used to improve the uniformity of the emitted light.

In some embodiments, when the vehicle lamp is a turn signal lamp of a vehicle, the turn signal lamp includes a lampshade, a lamp housing, a light source and a light guide. The light guide is disposed in a cavity formed between the lampshade and the lamp housing. The light guide has a curved arc matching the lampshade. The light guide is used to transmit light from one end of the vehicle lamp to the other end and emit it to meet the light distribution requirements of the turn signal lamp. During the propagation of light, the light encounters the optical pattern 102 and then emits it. The light emitted by the optical pattern 102 is uniform and full, which can enhance pedestrians' perception of the vehicle.

In other embodiments, when the car light is an ambient light of the vehicle, the ambient light of the vehicle is installed in the cab of the vehicle. For example, the ambient light of the vehicle can be installed between the armrest and the door trim, and connected with the door trim through the docking surface 300 of the light guide. The light emitted by the ambient light can be projected onto the armrest or the door trim, thereby enhancing the atmosphere inside the vehicle.

It is understandable that, since the vehicle lamp of the present application adopts the technical solution of the above-mentioned light guide embodiment, it at least has the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be described one by one here.

In a third aspect, the present application provides a vehicle, comprising a vehicle body and the above-mentioned headlight, wherein the headlight is arranged on the vehicle body.

For example, vehicle lights include vehicle ambient lights, vehicle turn signals, vehicle front and rear position lights, and vehicle brake lights.

It is understandable that, since the vehicle of the present application adopts the technical solution of the above-mentioned headlight embodiment, it at least has the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be described one by one here.

In the above description, it should be understood that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In the description of this application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A light guide for a vehicle lamp, the light guide comprising a light guide body including a first light guide surface and a second light guide surface, the first light guide surface and the second light guide surface being arranged in order along a circumferential direction of the light guide body, the first light guide surface and the second light guide surface each extending in an extending direction of the light guide body; the first light guide surface is provided with optical patterns;

And an abutting surface is arranged between the first light guide surface and the second light guide surface along the circumferential direction of the light guide body, extends along the radial direction of the light guide body and is used for abutting with the vehicle body of the vehicle.

2. The light guide of claim 1, wherein the first light guide surface and the second light guide surface are connected by the interface surface; the butt joint surface comprises a first butt joint surface and a second butt joint surface;

the first butt surface connects the first end of the first light guide surface and the first end of the second light guide surface along the circumferential direction of the light guide body, and the second butt surface connects the second end of the first light guide surface and the second end of the second light guide surface.

3. The light guide of claim 2, wherein the light guide body comprises a first light guide portion and a second light guide portion connected to each other, the first light guide surface being a surface of the first light guide portion facing away from the second light guide portion, the second light guide surface being a surface of the second light guide portion facing away from the first light guide portion;

The cross section of the first light guide part and the cross section of the second light guide part are semicircular, the radius of the cross section of the first light guide part is smaller than that of the cross section of the second light guide part, and the circle center of the cross section of the first light guide part and the circle center of the cross section of the second light guide part are overlapped;

The cross section is perpendicular to the direction of extension of the light guide body.

4. A light guide according to claim 3, wherein the optical pattern extends along the direction of extension of the light guide body;

The optical pattern is a convex arc-shaped bulge on the surface of the first light guide surface; and/or, the optical pattern is a concave arc shape of the surface of the first light guide surface.

5. The light guide of claim 4, wherein the first light guide surface is provided with a first protrusion proximate a first end of the second light guide surface and the first light guide surface is provided with a second protrusion proximate a second end of the second light guide surface;

A plurality of depressions are arranged between the first protrusions and the second protrusions on the first light guide surface, and the depressions are sequentially arranged from the first end of the first light guide surface to the second end of the first light guide surface.

6. The light guide of claim 5, wherein the recess has five;

A first connecting line is arranged between the middle point of one concave and the center of the cross section of the first light guide part, a second connecting line is arranged between the middle point of the other concave and the center of the cross section of the first light guide part, and an included angle between the first connecting line and the second connecting line is larger than or equal to 20 degrees and smaller than or equal to 30 degrees;

And/or five recesses comprise a central recess and four two-sided recesses, a central connecting line is arranged between the first end of the first light guide surface and the second end of the first light guide surface, a third connecting line is arranged between the middle point of the central recess and the center of the cross section of the first light guide part, and the central connecting line and the third connecting line are mutually perpendicular; wherein two of the two side recesses are located on one side of the central recess, and wherein the other two of the two side recesses are located on the other side of the central recess.

7. A light guide as claimed in claim 6, wherein intermediate protrusions are provided between adjacent ones of the recesses, the intermediate protrusions being circular in cross-section perpendicular to the direction of extension of the light guide body.

8. A light guide according to any one of claims 3-7, wherein a side of the second light guide portion facing away from the first light guide portion is provided with a light guide tooth groove extending in the direction of extension of the light guide body, a plurality of light guide teeth being provided in the light guide tooth groove, the plurality of light guide teeth being spaced apart in the direction of extension of the light guide body.

9. A vehicle lamp for a vehicle, comprising a lamp body, it is characterized in that the method comprises the steps of, comprising a light source and a light guide as claimed in any one of claims 1 to 8, the light guide is arranged at the place the light-emitting side of the light source.

10. A vehicle comprising a vehicle body and the lamp recited in claim 9, the lamp being provided to the vehicle body.