Thick-walled light guide part, vehicle lamp and vehicle

Abstract

The present application relates to the technical field of vehicle lamps and illumination, and provides a thick-walled light guide part, a vehicle lamp and a vehicle. The thick-walled light guide part comprises a thick-walled light guide part body; a light-homogenizing wall and a light-emitting wall are formed on opposite sides of the thick-walled light guide part body, respectively; a first wall is formed between the light-homogenizing wall and the light-emitting wall; the angle between the first wall and the light-emitting wall is an acute angle; and a reflecting surface is provided on the outer side of the first wall. The reflecting surface is provided on the outer side of the first wall, so that uniform light emitted from the light-homogenizing wall is incident to the first wall, then is reflected by the reflecting surface into the thick-walled light guide part body, and finally exits from the end of the light-emitting wall close to the first wall. That is, on the basis of the original exit light from the light-emitting wall, the exit light from the end of the light-emitting wall close to the first wall is added, so as to increase the brightness at the end of the light-emitting wall close to the first wall, thereby improving the illumination uniformity of the vehicle lamp.

Description

Light guide thick-walled part, vehicle lamp and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202420309961.X and application date of February 20, 2024, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of vehicle lamps and lighting technology, and in particular to a light-guiding thick-walled component, a vehicle lamp, and a vehicle. Background Art

[0004] Car lights focus on lighting uniformity and spatial three-dimensionality. Thick-walled light guide optical systems are a commonly used optical solution, which can bring a sense of spatial three-dimensionality, refinement and technology to car lights.

[0005] Currently, as shown in Figure 1, when a vehicle lamp is illuminated, a dark area A appears on the illuminated surface C of a thick-walled component of the vehicle lamp when viewed from the side, affecting the overall illumination uniformity of the vehicle lamp. Dark area A is particularly noticeable in the corner lights of vehicle signal lamps. Summary of the Invention

[0006] The present application provides a light-guiding thick-walled component, a vehicle lamp, and a vehicle. The light-guiding thick-walled component can increase the brightness of dark areas and improve the lighting uniformity of the vehicle lamp.

[0007] On the one hand, the present application provides a light-guiding thick-walled part, which includes a light-guiding thick-walled part body, and a light-uniform wall and a light-emitting wall are formed on opposite sides of the light-guiding thick-walled part body, a first wall is formed between the light-uniform wall and the light-emitting wall, the angle between the first wall and the light-emitting wall is an acute angle, and a reflective surface is provided on the outer side of the first wall.

[0008] In some embodiments, a second wall is formed between the light uniforming wall and the light exit wall. The second wall is located on a side of the light guide thick-walled component body opposite to the first wall. The included angle between the second wall and the light exit wall is an obtuse angle.

[0009] In some embodiments, a third wall and a fourth wall are formed between the light-uniform wall and the light-exiting wall, and the third wall and the fourth wall are located on opposite sides of the light-guiding thick-walled component body. The light-uniform wall is inclined away from the light-exiting wall along the direction from the fourth wall to the third wall, and the third wall has a light entrance recess at one end close to the light-uniform wall, and the light entrance recess is used to be set directly opposite the light source.

[0010] In some embodiments, the light uniforming wall is formed into a multi-step structure along the direction from the fourth wall to the third wall.

[0011] In some embodiments, the transition surface between the riser and the tread of the same step is a curved surface, and / or the transition surface between two adjacent steps is a curved surface.

[0012] In some embodiments, a first support portion and a second support portion are respectively provided on both sides of the light entrance recess, the first support portion and the second support portion are both provided on the third wall and extend in a direction away from the light guide thick-walled component body, the second support portion is located between the light entrance recess and the light exit wall, and the first support portion is located on the side of the light entrance recess away from the second support portion.

[0013] In some embodiments, the first supporting portion is an elastic body with deformation capability.

[0014] In some embodiments, one end of the first support portion is connected to the light uniforming wall, the other end of the first support portion is a free end, and the first support portion is bent along the direction from the end connected to the light uniforming wall to the free end.

[0015] In some embodiments, the reflective surface is formed on the outer surface of the first wall by aluminum plating, hot stamping reflective film or silk screen printing reflective film.

[0016] In some embodiments, a reflector is provided on the outer side of the first wall to form the reflective surface.

[0017] On the other hand, the present application provides a vehicle lamp, comprising the aforementioned light guide thick-walled member.

[0018] On the other hand, the present application provides a vehicle, comprising the above-mentioned vehicle lamp.

[0019] In the thick-walled light guide, vehicle lamp, and vehicle provided in the embodiments of the present application, the angle between the light outlet wall and the first wall of the thick-walled light guide is acute. By providing a reflective surface on the outer side of the first wall, uniform light emitted by the uniform light outlet wall, upon entering the first wall, is reflected by the reflective surface into the main body of the thick-walled light guide, and then emitted from the end of the light outlet wall closest to the first wall. In other words, the light emitted from the end of the light outlet wall closest to the first wall is added to the existing light emitted by the light outlet wall, thereby increasing the brightness of the end of the light outlet wall closest to the first wall and improving the lighting uniformity of the vehicle lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0021] FIG1 is a schematic diagram showing a dark area on a thick-walled light guide member;

[0022] FIG2 is a schematic cross-sectional view of a light guide thick-walled member provided in an embodiment of the present application;

[0023] FIG3 is a schematic structural diagram of a light guide thick-walled member provided in an embodiment of the present application;

[0024] FIG4 is a schematic diagram of the three-dimensional structure of the light guide thick-walled component provided in an embodiment of the present application.

[0025] Explanation of the accompanying drawings: 1. light uniforming wall; 21. first wall; 22. second wall; 3. light exit wall; 4. third wall; 41. light entrance recess; 5. fourth wall; 6. first supporting portion; 7. second supporting portion; 8. connecting plate; 9. LED lamp. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0028] To accommodate the headlight's shape, the space for the thick-walled light guide is limited, creating an acute angle between the thick-walled light guide's sidewall B and the light exit wall C. As shown in Figure 1, when the headlight is on, a dark area A appears on the illuminated surface C (the light exit wall of the rear wall) when viewed from the side.

[0029] The inventors found that the dark area A is caused by the fact that less light is incident on the side wall B of the thick-walled part, which has an acute angle with the light-emitting wall, and part of the incident light is not reflected back into the thick-walled part but refracted from the side wall B.

[0030] In view of this, as shown in Figures 2 to 4, an embodiment of the present application provides a light-guiding thick-walled component, including a light-guiding thick-walled component body, wherein a light-uniform wall 1 and a light-emitting wall 3 are formed on opposite sides of the light-guiding thick-walled component body, and a first wall 21 is formed between the light-uniform wall 1 and the light-emitting wall 3. The angle between the first wall 21 and the light-emitting wall 3 is an acute angle, and a reflective surface is provided on the outer side of the first wall 21.

[0031] In specific implementation, a reflective surface can be provided on the outer surface of the first wall 21 by aluminum plating, hot stamping reflective film, or silk screen printing reflective film. Alternatively, a reflective mirror can be provided on the outer side of the first wall 21 .

[0032] As shown in Figures 3 and 4, after the light from the light source is uniformly illuminated by the light-uniform wall 1, a portion of the light is emitted from the light-emitting wall 3, and the other portion of the light (the vector line with an arrow in Figure 3) is emitted from the first wall 21, reflected by the reflective surface on the outside thereof, and then emitted from the end of the light-emitting wall 3 close to the first wall 21. In this way, the light emitted from the end of the light-emitting wall 3 close to the first wall 21 is added to the original light emitted by the light-emitting wall 3. The brightness of the left area of ​​the light-emitting wall 3 in Figure 3 (the end of the light-emitting wall 3 close to the first wall 21) will increase, that is, the brightness of the end of the light-emitting wall 3 close to the first wall 21 is improved, thereby improving the lighting uniformity of the car lamp.

[0033] As shown in Figure 3, when the space of the car lamp permits, in some feasible embodiments, a second wall 22 is formed between the light-uniform wall 1 and the light-emitting wall 3. The second wall 22 is located on the side of the light-guiding thick-walled part body opposite to the first wall 21, and the angle between the second wall 22 and the light-emitting wall 3 is an obtuse angle.

[0034] When the angle between the second wall 22 and the light-emitting wall 3 is an obtuse angle, the incident light on the second wall 22 is sufficient, and no dark area will appear on the right side of the light-emitting wall 3. There is no need to set a reflective surface on the outer side of the second wall 22, which reduces costs. At the same time, when the angle between the second wall 22 and the light-emitting wall 3 is an obtuse angle, the space formed on the outer side of the second wall 22 of the light-guiding thick-walled part can avoid the construction of other components in the car lamp.

[0035] As shown in Figures 2 and 4, in some embodiments, a third wall 4 and a fourth wall 5 are formed between the light-uniform wall 1 and the light-emitting wall 3. The third wall 4 and the fourth wall 5 are located on opposite sides of the light-guiding thick-walled component body. The light-uniform wall 1 is tilted away from the light-emitting wall 3 along the direction from the fourth wall 5 to the third wall 4. The third wall 4 has a light entrance recess 41 at one end close to the light-uniform wall 1, and the light entrance recess 41 is used to be set directly opposite the light source.

[0036] The light entry recess 41 is positioned directly opposite a light source, which can be an LED 9. The light entry recess 41 is used to constrain the incident light from the light source, allowing as much light as possible to enter the thick-walled light guide body through the light entry recess 41. The light-distributing wall 1 is tilted, allowing more light entering the thick-walled light guide body to enter the light-distributing wall 1. This results in more uniform light passing through the light-distributing wall 1, resulting in better light effects on the light exit wall 3.

[0037] As shown in FIG. 2 , in some embodiments, the light-smoothing wall 1 is formed into a multi-step structure along the direction from the fourth wall 5 to the third wall 4 . The multi-step structure makes the light reflected by the light-smoothing wall 1 more uniform.

[0038] Furthermore, in some embodiments, the transition surface between the riser and tread of the same step is a curved surface. Alternatively, the transition surface between two adjacent steps is a curved surface. Of course, the transition surfaces between the riser and tread of the same step and between two adjacent steps are all curved surfaces. The purpose is to make the light reflected by the light-uniform wall 1 more uniform.

[0039] As shown in Figures 2 and 4, in some embodiments, a first support portion 6 and a second support portion 7 are respectively provided on both sides of the light entrance recess 41. The first support portion 6 and the second support portion 7 are both provided on the third wall 4 and extend in a direction away from the light guide thick-walled component body. The second support portion 7 is located between the light entrance recess 41 and the light exit wall 3, and the first support portion 6 is located on the side of the light entrance recess 41 away from the second support portion 7.

[0040] The first support portion 6 and the second support portion 7 support the connecting plate 8 provided with the light source. The first support portion 6 and the second support portion 7 are located on both sides of the light incident recess 41 to make the connecting plate 8 more stable and the position of the light source relative to the light incident recess 41 is not easily shifted.

[0041] When installing and positioning the connecting plate 8 with the first support portion 6 and the second support portion 7, to account for machining errors in the connecting plate 8 or the second support portion 7, in some embodiments, the first support portion 6 is a deformable elastic member. After one end of the connecting plate 8 is connected to the first support portion 6 (which may be bonded), and the second support portion 7 is connected to the connecting plate 8, the elastic member of the second support portion 7 allows adjustment based on the spacing between the second support portion 7 and the connecting plate 8.

[0042] In some embodiments, one end of the first support portion 6 is connected to the light-uniform wall 1, and the other end of the first support portion 6 is a free end. The first support portion 6 is bent along the direction from the end connected to the light-uniform wall 1 to the free end, that is, the first support portion 6 has a cavity on the side away from the connecting plate 8, so that the first support portion 6 can be squeezed to adjust the size of the gap between the first support portion 6 and the connecting plate 8.

[0043] In another embodiment of the present application, a vehicle lamp is provided. The vehicle lamp includes the above-mentioned thick-walled light guide member. The brightness of the end of the thick-walled light guide member close to the first wall is improved, and the lighting uniformity of the vehicle lamp is also improved.

[0044] In another embodiment of the present application, a vehicle is provided, which includes the above-mentioned headlights, and the lighting uniformity of the headlights, especially the vehicle's signal lights, is improved. When the vehicle is driving, pedestrians will not see dark areas when observing the headlights from any angle.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0046] It should also be noted that although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions within the scope of the claims.

[0047] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A light guide thick-walled component, comprising a light guide thick-walled component body, wherein a light uniformity wall and a light output wall are formed on opposite sides of the light guide thick-walled component body, a first wall is formed between the light uniformity wall and the light output wall, the angle between the first wall and the light output wall is an acute angle, and a reflective surface is provided on the outer side of the first wall.

2. The light guide thick-walled component according to claim 1, wherein a second wall is formed between the light uniforming wall and the light output wall, the second wall is located on a side of the light guide thick-walled component body opposite to the first wall, and an angle between the second wall and the light output wall is an obtuse angle.

3. According to the light-guiding thick-walled part according to claim 1 or 2, a third wall and a fourth wall are formed between the light-distributing wall and the light-emitting wall, the third wall and the fourth wall are located on opposite sides of the light-guiding thick-walled part body, the light-distributing wall is inclined away from the light-emitting wall along the direction from the fourth wall to the third wall, and the third wall has a light entrance recess at one end close to the light-distributing wall, and the light entrance recess is used to be arranged directly opposite the light source. 4 . The light guide thick-walled member according to claim 3 , wherein the light uniforming wall is formed into a multi-step structure along a direction from the fourth wall to the third wall. 5 . The light guide thick-walled part according to claim 4 , wherein the transition surface between the riser and the tread of the step at the same level is a cambered surface, and / or the transition surface between two adjacent steps is a cambered surface.

6. According to any one of claims 3 to 5, a first supporting portion and a second supporting portion are respectively provided on both sides of the light entrance recess, the first supporting portion and the second supporting portion are both provided on the third wall and extend in a direction away from the light entrance recess body, the second supporting portion is located between the light entrance recess and the light exit wall, and the first supporting portion is located on the side of the light entrance recess away from the second supporting portion. The light guide thick-walled member according to claim 6 , wherein the first supporting portion is an elastic body with deformation capability.

8. The light-guiding thick-walled member according to claim 7, wherein one end of the first supporting portion is connected to the light-uniform wall, the other end of the first supporting portion is a free end, and the first supporting portion is bent along the direction from the end connected to the light-uniform wall to the free end. 9 . The light guide thick-walled member according to claim 1 , wherein the reflective surface is formed on an outer surface of the first wall by aluminum plating, hot stamping reflective film or silk screen printing reflective film. 10 . The thick-walled light guide member according to claim 1 , wherein a reflector is provided on the outer side of the first wall to form the reflective surface.

11. A vehicle lamp comprising a light source and the light guide thick-walled member according to any one of claims 1 to 10.

12. A vehicle comprising the vehicle lamp according to claim 11.

Images