Lighting module and vehicle

Abstract

The application provides a lighting module and a vehicle, and relates to the technical field of vehicle parts, wherein the lighting module comprises a light source and a lens; the lens comprises an incident surface, a first total reflection surface, a second total reflection surface, a third total reflection surface, a fourth total reflection surface and an emergent surface; when the light source is lighted, the light emitted by the light source is transmitted from the incident surface to the first total reflection surface, and the light is reflected by the first total reflection surface and the second total reflection surface in sequence to form intermediate parallel light, so that the originally divergent light is integrated into an intermediate parallel light beam, light energy is avoided from being wasted, the intermediate parallel light beam is reflected by the third total reflection surface and the fourth total reflection surface in sequence, and finally emitted from the emergent surface to form a high beam light type; therefore, the lens can form a folded light path by using the total reflection surfaces, the up-down size of the lens is shortened, an ultra-narrow high beam lighting module is realized, and the light emitted by the light source can be converged to improve light efficiency.

Description

Technical Field

[0001] This application relates to the field of vehicle component technology, and in particular to a lighting module and a vehicle. Background Technology

[0002] Currently, with the development of automotive lighting technology and the diversification of automotive lighting designs, ultra-narrow high beam lighting modules have become one of the industry development trends.

[0003] In related technologies, vehicle lighting modules typically employ the following working mode: first, the light emitted by the LED light source is focused to the focal point, and then the light from the focal point is projected out through the projection module (i.e., the external lens).

[0004] However, since the projection module needs a certain focal length to ensure the brightness of the lighting module, and a certain size to collect and focus the light at the focal point, the luminous efficacy of the lighting module will be particularly low when the vertical dimension of the lighting module is very narrow. In order to ensure the luminous efficacy of the lighting module, the projection module needs to maintain a large size to collect light, which limits the size variation of the projection module and is not conducive to achieving an ultra-narrow aperture size for the lighting module. Utility Model Content

[0005] In view of this, embodiments of this application provide a lighting module and a vehicle to solve the technical problem of low luminous efficiency of ultra-narrow high beam lighting modules.

[0006] In a first aspect, this application provides a lighting module, which includes: light source; The lens includes an incident surface, a first total internal reflection surface, a second total internal reflection surface, a third total internal reflection surface, a fourth total internal reflection surface, and an exiting surface. The light source, the incident surface, the first total internal reflection surface, the fourth total internal reflection surface, and the exiting surface are arranged sequentially along a first direction. The incident surface and the exiting surface are arranged opposite to each other. The second and third total internal reflection surfaces are located between the incident surface and the exiting surface. The second and first total internal reflection surfaces are arranged along a second direction, and the third and fourth total internal reflection surfaces are arranged along the second direction, which is perpendicular to the first direction. The light emitted by the light source is transmitted from the light-incident surface to the first total reflection surface, and after being reflected by the first total reflection surface and the second total reflection surface in sequence, it forms an intermediate parallel beam. The intermediate parallel beam is then reflected by the third total reflection surface and the fourth total reflection surface in sequence, and finally emitted from the light-exit surface to form a high beam pattern.

[0007] Specifically, the light source, the incident surface, the first total reflection surface, the fourth total reflection surface, and the emitting surface are arranged sequentially along the first direction. The first total reflection surface connects the incident surface and the fourth total reflection surface. The angle formed between the first total reflection surface and the incident surface is an acute angle, so that the light entering the lens from the incident surface is first imaged on the first total reflection surface. The first total reflection surface and the fourth total reflection surface form a first angle. Since the opening of the first angle is set towards the outside of the lens, the light reflected by the first total reflection surface is not projected onto the fourth total reflection surface.

[0008] The second and third total internal reflection surfaces are located between the incident and exit surfaces. The second and first total internal reflection surfaces are arranged along the second direction, and the third and fourth total internal reflection surfaces are also arranged along the second direction, which is perpendicular to the first direction. The second total internal reflection surface connects the incident and third total internal reflection surfaces, and the angle formed between the second and incident surfaces is obtuse, allowing light reflected by the first total internal reflection surface to reach the second total internal reflection surface. The second and third total internal reflection surfaces form a second angle. Since the opening of the second angle faces inward towards the lens, light reflected by the second total internal reflection surface can be projected onto the third total internal reflection surface. The third total internal reflection surface can then reflect the light onto the fourth total internal reflection surface, which finally reflects the light to the exit surface and exits from the lens.

[0009] Thus, when the light source is lit, the light emitted by the light source can be transmitted from the incident surface to the first total internal reflection surface. After being reflected by the first and second total internal reflection surfaces in sequence, the light is formed into a central parallel beam, which shapes the originally divergent light into a central parallel beam, forming a preliminary focus and thus avoiding the waste of light energy. The central parallel beam is then reflected by the third and fourth total internal reflection surfaces in sequence, further adjusting the direction and concentration of the beam, and finally emitted from the light exit surface to form a high beam pattern. Therefore, the lens can use the above total internal reflection surfaces to form a folded light path, shorten the vertical dimensions of the lens, so as to realize an ultra-narrow high beam lighting module. At the same time, it can also converge the light emitted by the light source to improve the light efficiency.

[0010] As an optional implementation, the light-incident surface includes a concave arc surface, which is recessed toward the light-outceasing surface; The light emitted by the light source enters the lens through the concave arc surface, and the light rays converge to the first total reflection surface through the concave arc surface.

[0011] Thus, when the scattered light emitted by the light source enters through the concave arc surface, the concave arc surface will refract the light and produce a converging effect, initially converging the originally divergent light to a specific area of ​​the first total reflection surface. This can avoid the ineffective diffusion of scattered light inside the lens and reduce the loss of light energy caused by light divergence.

[0012] As an optional implementation, there are multiple concave arc surfaces, which are arranged sequentially along a third direction, which is perpendicular to both the first and second directions. There are also multiple light sources, with one concave arc surface corresponding to one light source.

[0013] In this embodiment, there are four concave arc surfaces, which are arranged sequentially along a third direction. The third direction is perpendicular to both the first and second directions. There are four light sources, which are respectively set one-to-one with the four concave arc surfaces. The scattered light emitted by each light source enters the lens from the corresponding concave arc surface. Each concave arc surface will cause the corresponding light to refract and produce a converging effect, thereby converging the four diverging light rays to the first total reflection surface. Then, the first, second, third, and fourth total reflection surfaces are used to further adjust the direction and concentration of the light beam, which is finally emitted from the light-emitting surface, forming a high beam pattern with sufficient central brightness, lateral expansion, and greater uniformity.

[0014] As an optional implementation, the first total reflection surface includes a reflective bowl surface connected to the concave arc surface, and the light rays are converged to the reflective bowl surface via the concave arc surface, and the reflective bowl surface reflects the light rays to the second total reflection surface.

[0015] In this way, the light emitted by the light source enters the lens through the concave arc surface, converges to the reflector bowl surface through the concave arc surface, and after being reflected by the reflector bowl surface, it is directed towards the second total reflection surface. After being reflected by the second total reflection surface, it forms a middle parallel beam. The middle parallel beam is reflected by the third and fourth total reflection surfaces in sequence, and then emitted from the light-emitting surface as a high-beam pattern.

[0016] The concave arc surface mainly serves to collect and focus light, while the reflective bowl surface is a total reflection freeform surface, which also mainly serves to collect and focus light. Furthermore, the reflective bowl surface and the second total reflection surface can reflect light to form a parallel beam in the middle, which is then emitted through the third and fourth total reflection surfaces in sequence, so that a high beam pattern with sufficient light intensity, which is wide in the third direction and narrow in the second direction, can be projected from the light-emitting surface.

[0017] As an optional implementation, the light-emitting surface is a convex arc surface, and the light-emitting surface protrudes in a direction away from the light-incident surface.

[0018] Specifically, the scattered light from the light source is converged by the concave arc surface to the first total reflection surface, and then reflected by the first and second total reflection surfaces in sequence to form an intermediate parallel beam. The intermediate parallel beam is then turned by the third and fourth total reflection surfaces, and finally the convex arc surface completes the final shaping of the light pattern.

[0019] It is understandable that although the scattered light is reflected by the first and second total internal reflection surfaces to form an intermediate parallel beam, the intermediate parallel beam is inevitably only roughly parallel. The beam that finally hits the light-emitting surface is still scattered. Although the heat dissipation is very small, the convex arc surface of the light-emitting surface can finally shape the beam of light emitted from the lens, which can further improve the light efficiency.

[0020] As an optional implementation, the radius of curvature of the light-emitting surface is R, where R satisfies: R≥80mm.

[0021] It is understandable that, since the lighting module in this embodiment is an ultra-narrow high-beam lighting module, the opening size of the light-emitting surface along the second direction can be less than 15mm. If the radius of curvature R of the light-emitting surface is less than 80mm, the amount of light transmitted through the light-emitting surface will be reduced, thereby reducing the light efficiency and affecting the lighting effect of the lighting module. When R ≥ 80mm, the light-emitting surface can both ultimately shape the beam of light emitted from the lens and not reduce the amount of light transmitted through the light-emitting surface.

[0022] As an optional implementation, the lens further includes: A first side surface, the first side surface being connected to the light-emitting surface and the fourth total reflection surface; The second side is arranged along the second direction with the first side. The second side connects the light-emitting surface and the third total reflection surface. There is a thick-walled light-emitting structure between the first side and the second side.

[0023] This configuration is more conducive to forming a high beam pattern that is wide in the horizontal direction (third direction) and narrow in the vertical direction (second direction). On the other hand, the light-emitting surface extends away from the light-incident surface along the first direction, which makes the lens design more flexible.

[0024] As an optional implementation, both the first side and the second side are provided with a light guide tooth structure, the light guide tooth structure including a plurality of first tooth surfaces and a plurality of second tooth surfaces; The first tooth surface and the second tooth surface both extend along a third direction, which is perpendicular to both the first direction and the second direction. Multiple first tooth surfaces are arranged sequentially along the first direction, and a second tooth surface is provided between every two adjacent first tooth surfaces. The second tooth surface intersects with and connects with the adjacent first tooth surface.

[0025] It can be understood that, in the embodiments of the present application, the light rays in the intermediate parallel beam mentioned are mutually parallel and / or approximately parallel, that is, substantially parallel is sufficient. Furthermore, the light emitted by the light source passes through the first total reflection surface and the second total reflection surface to form the intermediate parallel beam, and after the intermediate parallel beam is successively reflected by the third total reflection surface and the fourth total reflection surface, the resulting high beam light pattern has a better parallel effect than that of the intermediate parallel beam. However, inevitably, after the intermediate parallel beam is successively reflected by the third total reflection surface and the fourth total reflection surface, part of non-parallel light (i.e., stray light) will be incident on the first side surface and / or the second side surface. In the embodiments of the present application, light guiding tooth structures are provided on the first side surface and the second side surface, and the light guiding tooth structures can reflect and refract stray light incident on the first side surface and / or the second side surface, so that the stray light is emitted to the outside of the lens instead of being emitted from the light exit surface, which avoids interference of stray light on the high beam light pattern.

[0026] As an optional embodiment, the light guiding tooth structure is recessed toward the inside of the thick-walled light exit structure, the height of the light guiding tooth structure along the second direction is h, and h satisfies: 0mm < h ≤ 3mm.

[0027] Since the light guiding tooth structure is recessed toward the inside of the thick-walled light exit structure, it is necessary to control the height h of the light guiding tooth structure along the second direction. Optionally, 0mm < h ≤ 3mm can be set, so as to avoid the influence of the light guiding tooth structure on the main parallel light passing through the inside of the thick-walled light exit structure.

[0028] In a second aspect, the present application further provides a vehicle, comprising a vehicle body and the above lighting module, wherein the lighting module is mounted on the vehicle body.

[0029] The vehicle provided in the present application adopts the above lighting module, so that the manufacturing cost of the vehicle is low and the service performance of the vehicle is good. Description of Drawings

[0030] Figure 1 is a schematic perspective structural view of the lighting module from a first perspective provided by an embodiment of the present application; Figure 2 is a schematic perspective structural view of the lighting module from a second perspective provided by an embodiment of the present application; Figure 3 is a side view of the lighting module provided by an embodiment of the present application; Figure 4 is a side schematic view of ray tracing of the lighting module provided by an embodiment of the present application; Figure 5 is an Figure 3 enlarged schematic structural view of position A therein.

[0031] Description of Reference Numerals: 10. Illumination module; 1. Light source; 2. Lens; 21. Light incident surface; 211. Concave arc surface; 22. First total reflection surface; 221. Reflecting bowl surface; 23. Second total reflection surface; 24. Third total reflection surface; 25. Fourth total reflection surface; 26. Light emitting surface; 27. First side surface; 28. Second side surface; 29. ​​Light guide tooth structure; 291. First tooth surface; 292. Second tooth surface; 30. Thick-walled light emitting structure. Detailed Implementation

[0032] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0033] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0034] Currently, with the development of automotive lighting technology and the diversification of automotive headlight designs, ultra-narrow high beam lighting modules have become one of the industry's development trends. In related technologies, vehicle lighting modules typically adopt the following working mode: first, the light emitted by the LED light source is focused to the focal point, and then the light from the focal point is projected out through the projection module (i.e., the outer lens).

[0035] However, since the projection module needs a certain focal length to ensure the brightness of the lighting module, and a certain size to collect and focus the light at the focal point, the luminous efficacy of the lighting module will be particularly low when the vertical dimension of the lighting module is very narrow. In order to ensure the luminous efficacy of the lighting module, the projection module needs to maintain a large size to collect light, which limits the size variation of the projection module and is not conducive to achieving an ultra-narrow aperture size for the lighting module.

[0036] Based on this, this application provides a lighting module 10 and a vehicle, wherein a light source 1, an incident surface 21, a first total internal reflection surface 22, a fourth total internal reflection surface 25, and an emitting surface 26 are arranged sequentially along a first direction to form a main optical axis channel. The incident surface 21 and the emitting surface 26 are arranged opposite to each other, forming the beginning and end interfaces of the optical path. The second total internal reflection surface 23 and the third total internal reflection surface 24 are located between the incident surface 21 and the emitting surface 26, and the second total internal reflection surface 23 and the first total internal reflection surface 22 are arranged along a second direction, as are the third total internal reflection surface 24 and the fourth total internal reflection surface 25. The second direction is perpendicular to the first direction, so that the light source... The light emitted by the light source 1 can be transmitted from the light-incident surface 21 to the first total reflection surface 22. After being reflected by the first total reflection surface 22 and the second total reflection surface 23 in sequence, the light is formed into a central parallel beam, which makes the originally divergent light beam into a central parallel beam, avoiding the waste of light energy. The central parallel beam is reflected by the third total reflection surface 24 and the fourth total reflection surface 25 in sequence, and finally emitted from the light-out surface 26 to form a high beam pattern. Therefore, the lens 2 can use the above total reflection surfaces to form a folded light path, shorten the vertical dimension of the lens 2, so as to realize the ultra-narrow high beam illumination module 10. At the same time, it can also converge the light emitted by the light source 1 to improve the light efficiency.

[0037] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific implementation details.

[0038] Please see Figures 1 to 4 , Figure 1 This is a three-dimensional structural diagram of the lighting module provided in an embodiment of this application, showing a first perspective. Figure 2 This is a three-dimensional structural diagram of the lighting module provided in an embodiment of this application, from a second perspective. Figure 3 This is a side view of the lighting module provided in an embodiment of this application. Figure 4 This is a side view schematic diagram of the light tracing of the lighting module provided in the embodiment of this application.

[0039] As shown in the figure, this embodiment provides an illumination module 10, which includes a light source 1 and a lens 2. The lens 2 includes an incident surface 21, a first total reflection surface 22, a second total reflection surface 23, a third total reflection surface 24, a fourth total reflection surface 25, and an emitting surface 26. The light source 1, the incident surface 21, the first total reflection surface 22, the fourth total reflection surface 25, and the emitting surface 26 are arranged sequentially along a first direction. The incident surface 21 and the emitting surface 26 are positioned opposite each other, and the second total reflection surface 23 and the third total reflection surface 24 are located between the incident surface 21 and the emitting surface. Between 26, the second total reflection surface 23 and the first total reflection surface 22 are arranged along the second direction, and the third total reflection surface 24 and the fourth total reflection surface 25 are arranged along the second direction, which is perpendicular to the first direction. The light emitted by the light source 1 is transmitted from the light incident surface 21 to the first total reflection surface 22, and is reflected by the first total reflection surface 22 and the second total reflection surface 23 in sequence to form a middle parallel beam. The middle parallel beam is then emitted by the third total reflection surface 24 and the fourth total reflection surface 25 in sequence, and finally emitted from the light exiting surface 26 to form a high beam pattern.

[0040] It is understandable that the light-incident surface 21 is the interface where light first enters the lens 2, the light-exit surface 26 is the interface where light finally leaves the lens 2, and the first total reflection surface 22, the second total reflection surface 23, the third total reflection surface 24 and the fourth total reflection surface 25 are responsible for reflecting light and adjusting the direction of the light path.

[0041] Figure 1 The X-axis is the first direction (front-back direction), with its positive direction pointing backward and its negative direction pointing forward. The Y-axis is the third direction (left-right direction), with its positive direction pointing to the right and its negative direction pointing to the left. The Z-axis is the second direction (up-down direction), with its positive direction pointing upward and its negative direction pointing downward.

[0042] In this embodiment, the light-incident surface 21 and the light-exit surface 26 are arranged along the first direction and positioned opposite each other, so that the light-incident surface 21 and the light-exit surface 26 are in a geometrically approximately parallel relationship. The light source 1, the light-incident surface 21, and the light-exit surface 26 are also arranged along the first direction. The first total reflection surface 22, the second total reflection surface 23, the third total reflection surface 24, and the fourth total reflection surface 25 are all located between the light-incident surface 21 and the light-exit surface 26. Thus, the light source 1 can emit light along the direction from the light-incident surface 21 toward the light-exit surface 26. After being reflected by the first total reflection surface 22, the second total reflection surface 23, the third total reflection surface 24, and the fourth total reflection surface 25, the light can be emitted from the light-exit surface 26 to form a high-beam pattern to meet the needs of nighttime lighting. This can reduce the ineffective optical path and scattering loss, thereby improving the luminous efficiency.

[0043] Specifically, the light source 1, the incident surface 21, the first total reflection surface 22, the fourth total reflection surface 25, and the emitting surface 26 are arranged sequentially along the first direction. The first total reflection surface 22 connects the incident surface 21 and the fourth total reflection surface 25. The angle formed by the first total reflection surface 22 and the incident surface 21 is an acute angle, so that the light entering the lens 2 from the incident surface 21 is first imaged on the first total reflection surface 22. The first total reflection surface 22 and the fourth total reflection surface 25 form a first angle. Since the opening of the first angle is set towards the outside of the lens 2, the light reflected by the first total reflection surface 22 is not projected onto the fourth total reflection surface 25.

[0044] The second total internal reflection surface 23 and the third total internal reflection surface 24 are located between the incident light surface 21 and the exit light surface 26. The second total internal reflection surface 23 and the first total internal reflection surface 22 are arranged along the second direction, and the third total internal reflection surface 24 and the fourth total internal reflection surface 25 are arranged along the second direction, which is perpendicular to the first direction. The second total internal reflection surface 23 connects the incident light surface 21 and the third total internal reflection surface 24. The angle formed between the second total internal reflection surface 23 and the incident light surface 21 is an obtuse angle, so that the light reflected by the first total internal reflection surface 22 can be directed to the second total internal reflection surface 23. The second total internal reflection surface 23 and the third total internal reflection surface 24 form a second angle. Since the opening of the second angle faces the inside of the lens 2, the light reflected by the second total internal reflection surface 23 can be projected onto the third total internal reflection surface 24. The third total internal reflection surface 24 can then reflect the light onto the fourth total internal reflection surface 25. Finally, the fourth total internal reflection surface 25 reflects the light to the exit light surface 26 and exits from the exit light surface 26 out of the lens 2.

[0045] Thus, when the light source 1 is lit, the light emitted by the light source 1 can be transmitted from the light-incident surface 21 to the first total reflection surface 22. After being reflected by the first total reflection surface 22 and the second total reflection surface 23 in sequence, the light is formed into a central parallel beam, which is formed by shaping the originally divergent light into a central parallel beam, thus forming a preliminary focus and avoiding the waste of light energy. The central parallel beam is then reflected by the third total reflection surface 24 and the fourth total reflection surface 25 in sequence, further adjusting the beam direction and concentration, and finally emitted from the light-out surface 26 to form a high beam pattern. Therefore, the lens 2 can use the above total reflection surfaces to form a folded light path, shorten the vertical dimension of the lens 2, so as to realize the ultra-narrow high beam illumination module 10. At the same time, it can also converge the light emitted by the light source 1 to improve the light efficiency.

[0046] Please see Figure 1 In some embodiments, the light-incident surface 21 includes a concave arc surface 211, which is recessed toward the light-out surface 26. The light emitted by the light source 1 enters the lens 2 through the concave arc surface 211 and converges to the first total reflection surface 22 via the concave arc surface 211.

[0047] In this embodiment, the concave arc surface 211 is recessed towards the light-emitting surface 26, and the concave arc surface 211 is connected to the first total reflection surface 22, so that the concave arc surface 211 is set close to the first total reflection surface 22, and the light source 1 is set opposite to the concave arc surface 211, ensuring that the light emitted by the light source 1 can enter the lens 2 from the concave arc surface 211, and the light is directly converged on the first total reflection surface 22 through the concave arc surface 211.

[0048] Thus, when the scattered light emitted by the light source 1 enters through the concave arc surface 211, the concave arc surface 211 will cause the light to refract and produce a converging effect, initially converging the originally divergent light to a specific area of ​​the first total reflection surface 22, which can avoid the ineffective diffusion of scattered light inside the lens 2 and reduce the light energy loss caused by light divergence.

[0049] In some other embodiments, the incident surface 21 can also be a plane, and the light emitted by the light source 1 is directly transmitted to the first total reflection surface 22, which then converges the light.

[0050] Please see Figure 1 In some embodiments, there are multiple concave arc surfaces 211, which are arranged sequentially along a third direction. The third direction is perpendicular to both the first and second directions. There are multiple light sources 1, with one concave arc surface 211 corresponding to one light source 1.

[0051] In this embodiment, there are four concave arc surfaces 211, which are arranged sequentially along a third direction. The third direction is perpendicular to both the first and second directions. There are four light sources 1, which are respectively set to correspond one-to-one with the four concave arc surfaces 211. The scattered light emitted by each light source 1 enters the lens 2 from the corresponding concave arc surface 211. Each concave arc surface 211 will cause the corresponding light to be refracted and produce a converging effect, thereby converging the four divergent light rays to the first total reflection surface 22. Then, the direction and concentration of the beam are further adjusted by the first total reflection surface 22, the second total reflection surface 23, the third total reflection surface 24 and the fourth total reflection surface 25 in sequence. Finally, the beam is emitted from the light-emitting surface 26, forming a high beam pattern with sufficient central brightness, lateral expansion and greater uniformity.

[0052] In some other embodiments, the number of concave arc surfaces 211 can be other values. In this embodiment, the specific number of concave arc surfaces 211 is not limited, as long as one concave arc surface 211 corresponds to one light source 1.

[0053] Please see Figure 1 and Figure 2In some embodiments, the first total reflection surface 22 includes a reflective bowl surface 221, which is connected to the concave arc surface 211. Light rays converge from the concave arc surface 211 to the reflective bowl surface 221, and the reflective bowl surface 221 reflects the light rays to the second total reflection surface 23.

[0054] In this embodiment, the first total reflection surface 22 includes four reflective bowls 221, which are arranged sequentially along a third direction. One reflective bowl 221 is connected to a concave arc surface 211, and the reflective bowl 221 is deflected toward the light-emitting surface 26 relative to the concave arc surface 211.

[0055] Thus, the light emitted from the light source 1 enters the lens 2 through the concave arc surface 211, converges to the reflector surface 221 through the concave arc surface 211, and after being reflected by the reflector surface 221, it is directed towards the second total reflection surface 23. After being reflected by the second total reflection surface 23, it forms a middle parallel beam. The middle parallel beam is reflected in sequence by the third total reflection surface 24 and the fourth total reflection surface 25, and is emitted from the light-emitting surface 26 as a high-beam pattern.

[0056] Among them, the concave arc surface 211 mainly plays the role of collecting and focusing light, and the reflective bowl surface 221 is a total reflection freeform surface, which mainly plays the role of collecting and focusing light. The reflective bowl surface 221 and the second total reflection surface 23 can reflect light to form a middle parallel beam, which is emitted after passing through the third total reflection surface 24 and the fourth total reflection surface 25 in sequence, so that the light is finally projected from the light-emitting surface 26 with sufficient light intensity and a long beam pattern that is wide in the third direction and narrow in the second direction.

[0057] Please see Figures 2 to 4 In some embodiments, the light-emitting surface 26 is a convex arc surface, and the light-emitting surface 26 protrudes in a direction away from the light-incident surface 21.

[0058] Specifically, the scattered light from the light source 1 is converged by the concave arc surface 211 to the first total reflection surface 22, and then reflected by the first total reflection surface 22 and the second total reflection surface 23 in sequence to form an intermediate parallel beam. The intermediate parallel beam is then turned by the third total reflection surface 24 and the fourth total reflection surface 25, and finally the convex arc surface completes the final shaping of the light pattern.

[0059] It is understandable that although the scattered light is reflected by the first total reflection surface 22 and the second total reflection surface 23 to form an intermediate parallel beam, the intermediate parallel beam is inevitably only roughly parallel. The beam that finally hits the light-emitting surface 26 is still scattered. Although the heat dissipation is very small, the light-emitting surface 26 is a convex arc surface, which can finally shape the beam emitted by the lens 2, and can further improve the light efficiency.

[0060] In some embodiments, the radius of curvature of the light-emitting surface 26 is R, where R satisfies: R≥80mm.

[0061] It is understandable that, since the lighting module 10 in this embodiment is an ultra-narrow high-beam lighting module 10, the opening size of the light-emitting surface 26 along the second direction can be less than 15mm. If the radius of curvature R of the light-emitting surface 26 is less than 80mm, the amount of light transmitted through the light-emitting surface 26 will be reduced, thereby reducing the light efficiency and affecting the lighting effect of the lighting module 10. When R ≥ 80mm, the light-emitting surface 26 can both ultimately shape the beam emitted from the lens 2 and not reduce the amount of light transmitted through the light-emitting surface 26.

[0062] Please see Figures 2 to 4 In some embodiments, the lens 2 further includes a first side surface 27 and a second side surface 28. The first side surface 27 connects the light-emitting surface 26 and the fourth total internal reflection surface 25. The second side surface 28 is arranged along the second direction with the first side surface 27 and connects the light-emitting surface 26 and the third total internal reflection surface 24. A thick-walled light-emitting structure 30 is provided between the first side surface 27 and the second side surface 28. This arrangement is more conducive to forming a high-beam pattern that is wide laterally (in the third direction) and narrow longitudinally (in the second direction). On the other hand, the light-emitting surface 26 extends away from the light-incident surface 21 along the first direction, allowing for greater freedom in the design of the lens 2.

[0063] In some other embodiments, the light-emitting surface 26 can also be directly connected to the fourth total reflection surface 25, and the light-emitting surface 26 can also be directly connected to the third total reflection surface 24. This arrangement can shorten the path of the light beam in the lens 2 and further improve the light efficiency.

[0064] Please see Figure 3 and Figure 5 In some embodiments, both the first side surface 27 and the second side surface 28 are provided with light guide tooth structure 29. The light guide tooth structure 29 includes a plurality of first tooth surfaces 291 and a plurality of second tooth surfaces 292. The first tooth surfaces 291 and the second tooth surfaces 292 extend along a third direction. The plurality of first tooth surfaces 291 are arranged sequentially along a first direction, and a second tooth surface 292 is provided between every two adjacent first tooth surfaces 291. The second tooth surface 292 intersects with and connects with the adjacent first tooth surface 291.

[0065] It can be understood that, in the embodiments of the present application, the light rays in the intermediate parallel beam mentioned above are mutually parallel and / or approximately parallel, that is, substantially parallel. Moreover, the light emitted by the light source 1 is reflected by the first total reflection surface 22 and the second total reflection surface 23 to form the intermediate parallel beam, and after the intermediate parallel beam is sequentially reflected by the third total reflection surface 24 and the fourth total reflection surface 25, the obtained high beam pattern has a better parallel effect than the intermediate parallel beam. However, inevitably, after the intermediate parallel beam is sequentially reflected by the third total reflection surface 24 and the fourth total reflection surface 25, part of non-parallel light (i.e., stray light) will be incident on the first side surface 27 and / or the second side surface 28. In the embodiments of the present application, the first side surface 27 and the second side surface 28 are provided with a light guiding tooth structure 29, which can reflect and refract stray light incident on the first side surface 27 and / or the second side surface 28, so that the stray light exits to the outside of the lens 2 instead of exiting from the light exit surface 26, thereby preventing stray light from interfering with the high beam pattern.

[0066] Optionally, as Figure 5 shown, the light guiding tooth structure 29 is recessed into the thick-walled light exit structure 30, that is, the connecting angle of the first tooth surface 291 and the second tooth surface 292 of the light guiding tooth structure 29 faces the interior of the thick-walled light exit structure 30. In this way, while the light guiding tooth structure 29 is used to dissipate stray light, the volume of the thick-walled light exit structure 30 is also reduced, thereby saving material and cost. It should be noted that, since the light guiding tooth structure 29 is recessed into the thick-walled light exit structure 30, it is necessary to control the height h of the light guiding tooth structure 29 in the second direction. Optionally, 0 mm < h ≤ 3 mm may be set to prevent the light guiding tooth structure 29 from affecting the main parallel light passing through the interior of the thick-walled light exit structure 30.

[0067] In another option, the light guiding tooth structure 29 may also protrude in a direction away from the thick-walled light exit structure 30, that is, the connecting angle of the first tooth surface 291 and the second tooth surface 292 of the light guiding tooth structure 29 protrudes in a direction away from the thick-walled light exit structure 30. In this way, the influence of the light guiding tooth structure 29 on the main parallel light passing through the interior of the thick-walled light exit structure 30 can be avoided, but the volume of the thick-walled light exit structure 30 is correspondingly increased at the same time.

[0068] The present embodiment also provides a vehicle, comprising a vehicle body and the above-mentioned lighting module 10, wherein the lighting module 10 is mounted on the vehicle body. Wherein, the lighting module 10 should further comprise a lamp holder and / or a lampshade connected to the vehicle body, and the structure of the lighting module 10 is not specifically limited herein. Generally, in order to improve the overall assembly efficiency of the vehicle and facilitate later maintenance and repair of the lighting module 10, a detachable connection is adopted between the lighting module 10 and the vehicle body, for example, connection via threaded fasteners such as screws or clamping via buckles, etc. The connection mode between the lighting module 10 and the vehicle body is not specifically limited herein.

[0069] It should be noted that the vehicle provided in this embodiment should also include other modules or components that enable the vehicle to operate normally. Here, these other modules or components will not be described one by one.

[0070] The vehicle provided in this embodiment uses the aforementioned lighting module 10, which results in lower manufacturing costs and better performance.

[0071] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lighting module, characterized in that, include: light source; The lens includes an incident surface, a first total internal reflection surface, a second total internal reflection surface, a third total internal reflection surface, a fourth total internal reflection surface, and an exiting surface. The light source, the incident surface, the first total internal reflection surface, the fourth total internal reflection surface, and the exiting surface are arranged sequentially along a first direction. The incident surface and the exiting surface are arranged opposite to each other. The second and third total internal reflection surfaces are located between the incident surface and the exiting surface. The second and first total internal reflection surfaces are arranged along a second direction, and the third and fourth total internal reflection surfaces are arranged along the second direction, which is perpendicular to the first direction. The light emitted by the light source is transmitted from the light-incident surface to the first total reflection surface, and after being reflected by the first total reflection surface and the second total reflection surface in sequence, it forms an intermediate parallel beam. The intermediate parallel beam is then reflected by the third total reflection surface and the fourth total reflection surface in sequence, and finally emitted from the light-exit surface to form a high beam pattern.

2. The lighting module according to claim 1, characterized in that, The light-incident surface includes a concave arc surface, which is recessed towards the light-outceasing surface. The light emitted by the light source enters the lens through the concave arc surface, and the light rays converge to the first total reflection surface through the concave arc surface.

3. The lighting module according to claim 2, characterized in that, The number of concave arc surfaces is multiple, and the multiple concave arc surfaces are arranged sequentially along a third direction, which is perpendicular to both the first direction and the second direction. The number of light sources is multiple, and one concave arc surface is correspondingly set with one light source.

4. The lighting module according to claim 2, characterized in that, The first total reflection surface includes a reflective bowl surface, which is connected to the concave arc surface. The light rays are converged by the concave arc surface to the reflective bowl surface, and the reflective bowl surface reflects the light rays to the second total reflection surface.

5. The lighting module according to claim 1, characterized in that, The light-emitting surface is a convex arc surface, and the light-emitting surface protrudes in a direction away from the light-incident surface.

6. The lighting module according to claim 5, characterized in that, The radius of curvature of the light-emitting surface is R, and R satisfies: R≥80mm.

7. The lighting module according to claim 1, characterized in that, The lens also includes: A first side surface, the first side surface being connected to the light-emitting surface and the fourth total reflection surface; The second side is arranged along the second direction with the first side. The second side connects the light-emitting surface and the third total reflection surface. There is a thick-walled light-emitting structure between the first side and the second side.

8. The lighting module according to claim 7, characterized in that, Both the first side and the second side are provided with a light guide tooth structure, the light guide tooth structure including a plurality of first tooth surfaces and a plurality of second tooth surfaces; The first tooth surface and the second tooth surface both extend along a third direction, which is perpendicular to both the first direction and the second direction. Multiple first tooth surfaces are arranged sequentially along the first direction, and a second tooth surface is provided between every two adjacent first tooth surfaces. The second tooth surface intersects with and connects with the adjacent first tooth surface.

9. The lighting module according to claim 8, characterized in that, The light guide tooth structure is recessed into the thick-walled light-emitting structure. The height of the light guide tooth structure along the second direction is h, where h satisfies: 0 mm. <h≤3mm。 10. A vehicle, characterized in that, The vehicle includes a vehicle body and a lighting module as described in any one of claims 1-9, wherein the lighting module is mounted on the vehicle body.

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