Lighting module, lighting system and vehicle

Abstract

The present application relates to vehicle lighting devices. Disclosed is a lighting module, comprising a light source, a first reflective element and a second reflective element, which are sequentially arranged; the second reflective element comprises a curved reflective component and a planar reflective component which are vertically and sequentially connected to each other, wherein the curved reflective component can receive a portion of light reflected by the first reflective element and reflect same to a light emission opening so as to form a first lighting pattern, and the planar reflective component can receive the other portion of the light reflected by the first reflective element and reflect same to the light emission opening so as to form a second lighting pattern, the first lighting pattern and the second lighting pattern being superimposed so as to form a lighting pattern. When the curved reflective component is located above the planar reflective component, the reflective surface of the first reflective element faces away from the light emission opening, and when the planar reflective component is located above the curved reflective component, the reflective surface of the first reflective element faces the light emission opening. The module can form a light pattern having high definition, and the size of the light emission opening is small. The present application further relates to a lighting system comprising the lighting module and a vehicle.

Description

Lighting module, lighting system and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Chinese patent application No. 202410001336.3 filed on January 2, 2024, the contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to a vehicle lighting device, and more particularly, to a lighting module. In addition, the present application also relates to a lighting system and a vehicle including the lighting module. Background Art

[0004] Currently, reflective lighting systems generally use multiple sub-paraboloids to image a multi-chip integrated light source separately, thereby forming a sub-illumination light pattern. The sub-illumination light patterns are superimposed to form an illumination light pattern. Traditional reflective lighting systems use parabolic reflective surfaces to collimate the divergent light emitted by the light source set at the focus, forming nearly parallel illumination rays. Due to the use of a multi-chip integrated light source, the light source has a large light-emitting surface, so it is necessary to image the light source through a large focal length parabola. Otherwise, the light pattern imaging is prone to significant distortion. During the production of car lights, the size of the light outlet will also increase, and the structural frame of the car lights will also increase, increasing production costs. Traditional reflective optical systems use multiple parabolic surfaces to image the same light source. Steps or rounded corners are easily generated between the multiple paraboloids, resulting in stray light and light loss.

[0005] In view of this, it is necessary to design a new lighting module.

[0006] Summary of the Invention

[0007] One of the objectives of the present application is to provide a lighting module that can ensure the clarity of the light pattern formed by itself while avoiding the generation of stray light and reducing the size of the light output opening.

[0008] The second purpose of the present application is to provide a lighting system, in which the lighting module can avoid the generation of stray light while ensuring clear light imaging, and further reduce the size of the light outlet of the lighting module.

[0009] The third object of the present application is to provide a vehicle, wherein the lighting system of the vehicle further reduces the size of its light outlet while ensuring the clarity of light pattern imaging.

[0010] In order to achieve the above technical problems, the first aspect of the present application provides a lighting module, comprising: a light source and at least one first reflecting element and at least one second reflecting element arranged in sequence along the propagation direction of the light, the first reflecting element being configured to receive the light emitted by the light source and reflect the light toward the second reflecting element, the second reflecting element comprising a curved reflecting element and a flat reflecting element connected in sequence along the up and down directions, the curved reflecting element being configured to receive a portion of the light reflected by the first reflecting element and reflect the portion of the light toward a light exit opening to form a first lighting light pattern, the flat reflecting element being configured to receive another portion of the light reflected by the first reflecting element and reflect the portion of the light toward the light exit opening to form a second lighting light pattern, the first lighting light pattern and the second lighting light pattern being superimposed to form the desired lighting light pattern, wherein, when the curved reflecting element is located above the flat reflecting element, the reflecting surface of the first reflecting element is away from the direction of the light exit opening, and when the flat reflecting element is located above the curved reflecting element, the reflecting surface of the first reflecting element is facing the direction of the light exit opening.

[0011] Furthermore, when the curved reflective element is located above the planar reflective element, the focus of the curved reflective element is located on the reflective surface of the first reflective element.

[0012] Furthermore, the curved reflective element receives and reflects light emitted by the light source from the plane where the light-emitting surface of the light source is located to an area within a range of 10° to 90° rotated counterclockwise.

[0013] Furthermore, when the planar reflective element is located above the curved reflective element, the end of the first reflective element is connected to the end of the second reflective element to form an integral structural component, and the reflective surface of the first reflective element and the reflective surface of the second reflective element are both facing the direction of the light output opening.

[0014] Furthermore, the curved reflective element receives and reflects light emitted by the light source from the plane where the light-emitting surface of the light source is located to an area within a range of 10° to 90° rotated clockwise.

[0015] Furthermore, the reflecting surface of the curved reflecting element is a curved surface formed by stretching a parabola along a single direction.

[0016] Furthermore, the reflective surface of the curved reflective element is a quasi-curved surface formed by stretching a plurality of connected broken lines along a single direction.

[0017] Furthermore, the reflective surface of the planar reflective element is a planar reflective structure composed of a plurality of parallel and non-coplanar planar reflective surfaces connected in sequence.

[0018] Furthermore, the curved reflective element and the planar reflective element are connected via a stepped surface.

[0019] Furthermore, the reflecting surface of the first reflecting element is a parabola, a quasi-parabola, an ellipsoid or a quasi-ellipsoid.

[0020] Furthermore, the focal length of the first reflective element is less than 10 mm, preferably 2 to 5 mm.

[0021] Furthermore, a plurality of the first reflecting elements are sequentially connected along a horizontal direction, and the first reflecting elements are arranged in a one-to-one correspondence with the light sources.

[0022] Furthermore, an angle is formed between the optical axes of two adjacent first reflective elements, an opening of the angle faces the light source, and the angle is no greater than 30°.

[0023] Furthermore, the plane where the light emitting surface of the light source is located forms an angle within 30° with the light emitting direction of the first reflective element.

[0024] A second aspect of the present application further discloses a lighting system, comprising a lighting module and a circuit board according to any one of the above technical solutions, wherein a light source is mounted on the circuit board.

[0025] Furthermore, a heat sink is included, and the circuit board is connected to the heat sink.

[0026] The third aspect of the present application further discloses a vehicle, comprising the lighting system according to any one of the above technical solutions.

[0027] Through the above technical solution, the beneficial effects of this application are as follows:

[0028] The present application provides a lighting module, comprising a light source, at least one first reflecting element and at least one second reflecting element arranged in sequence along the direction of light propagation, the first reflecting element being configured to receive light emitted by the light source and reflect the light toward the second reflecting element, the second reflecting element comprising a curved reflecting element and a flat reflecting element connected in sequence along the up and down directions, wherein the curved reflecting element is configured to receive a portion of the light reflected by the first reflecting element and reflect this portion of the light toward the light exit opening to form a first lighting light pattern, and the flat reflecting element is configured to receive another portion of the light reflected by the first reflecting element and reflect this portion of the light toward the light exit opening to form a second lighting light pattern. Light pattern, the first lighting light pattern can be superimposed with the second lighting light pattern to form the required lighting light pattern, wherein, when the curved reflective element is located above the flat reflective element, the reflective surface of the first reflective element is back to the direction of the light exit opening, and when the flat reflective element is located above the curved reflective element, the reflective surface of the first reflective element is toward the direction of the light exit opening. One or more lighting light patterns can be combined to form a low beam light pattern or a high beam light pattern. The first reflective element cooperates with the second reflective element to make the light undergo secondary reflection, which can avoid the loss of light from the light source, so the light pattern imaging will be clearer. In addition, the cooperation between the first reflective element and the second reflective element can further reduce the size of the light exit opening.

[0029] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the present application but do not constitute a limitation of the present application. In the accompanying drawings:

[0031] FIG1 is a schematic structural diagram of a specific embodiment of a lighting module of the present application;

[0032] FIG2 is a second structural diagram of a specific embodiment of the lighting module of the present application;

[0033] FIG3 is a schematic diagram of a light path of a specific embodiment of the lighting module of the present application;

[0034] FIG4 is a schematic diagram of a specific embodiment of the focus setting of the curved reflective element in FIG3 ;

[0035] FIG5 is a structural diagram of a specific embodiment of a connection method between a curved reflective element and a flat reflective element in the lighting module of the present application;

[0036] FIG6 is a screen illumination diagram of a second illumination light pattern corresponding to the planar reflective element in the illumination module of the present application;

[0037] FIG7 is a screen illumination diagram of a first illumination light pattern corresponding to the curved reflective element in the illumination module of the present application;

[0038] FIG8 is a screen illumination diagram of an illumination light pattern formed by superimposing the first illumination light pattern and the second illumination light pattern;

[0039] FIG9 is a schematic diagram showing a structure in which a plurality of first reflective elements are provided in the lighting module of the present application;

[0040] FIG10 is a second structural diagram of a lighting module of the present application in which a plurality of first reflective elements are provided;

[0041] FIG11 is a schematic diagram of a complete high beam pattern formed by a specific embodiment of the lighting module of the present application;

[0042] FIG12 is a schematic structural diagram of another specific embodiment of the lighting module of the present application;

[0043] FIG13 is a schematic diagram of the light path of another specific embodiment of the lighting module of the present application;

[0044] FIG14 is a schematic structural diagram of a third specific embodiment of the lighting module of the present application;

[0045] FIG15 is a structural diagram of a specific embodiment of the light source arrangement of the lighting module of the present application;

[0046] Description of Reference Numerals

[0047] 1-light source; 2-first reflecting element; 3-second reflecting element; 31-curved reflecting element; 32-flat reflecting element; 4-heat sink. DETAILED DESCRIPTION

[0048] The specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present application, and the scope of protection of the present application is not limited to the specific implementation methods described below.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "provided with," "installed," "configured," and "connected" should be understood in a broad sense. For example, the connection may be a direct connection or an indirect connection through an intermediate medium, a fixed connection or a detachable connection, an integral connection, or internal communication between two elements or an interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0051] In the present application, unless otherwise specified, the directional words used, such as "up" and "down", are defined based on the up and down of the corresponding components. In addition, "facing" and "back" are defined based on the direction in which the reflective element is used, and "along the direction of light propagation" is defined based on the arrangement direction of the light source 1 provided in the present application. It can be understood as the propagation direction of the light emitted from the light source 1 after passing through each element and then emitted from the light output opening. Specifically, in the drawings provided in the present application, the orientation or position relationship used is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application. The directional terms of the present application should be understood in conjunction with the actual installation status.

[0052] Referring to Figures 1 to 3, the first aspect of the present application provides a lighting module, which includes a light source 1 and at least one first reflecting element 2 and at least one second reflecting element 3 arranged in sequence along the direction of light propagation. The first reflecting element 2 is configured to receive the light emitted by the light source 1 and to reflect the light toward the second reflecting element 3. After receiving the light reflected by the first reflecting element 2, the second reflecting element 3 performs a secondary reflection and reflects the light toward the light outlet opening so as to perform light-type imaging. The second reflecting element 3 includes a curved reflecting element 31 and a flat reflecting element 32 connected in sequence in the up and down directions. The curved reflecting element 31 is configured to receive the light emitted by the first reflecting element 2. The curved reflective element 31 is located above the plane reflective element 32, and the reflective surface of the first reflective element 2 is facing away from the light exiting opening; and when the plane reflective element 32 is located above the curved reflective element 31, the reflective surface of the first reflective element 2 is facing away from the light exiting opening; and when the plane reflective element 32 is located above the curved reflective element 31, the reflective surface of the first reflective element 2 is facing the light exiting opening.

[0053] It can be understood that, referring to Figure 7, the part of the light reflected by the curved reflective element 31 is reflected by the first reflective element 2, and after it is emitted from the light exit opening, the first lighting light pattern formed can ensure the widening of the lighting light pattern; referring to Figure 6, the other part of the light reflected by the planar reflective element 32 is reflected by the first reflective element 2, and after it is emitted from the light exit opening, the second lighting light pattern formed can ensure the brightness of the middle area of ​​the lighting light pattern; as shown in Figure 8, this light pattern is the desired light pattern formed by the superposition of the first lighting light pattern and the second lighting light pattern.

[0054] It should be noted that the light source 1 used in this application can be a single-chip LED or a multi-chip LED. The single-chip LED corresponds to one light-emitting position, so each single-chip LED is correspondingly provided with a first reflective element 2. As for the multi-chip LED, since there are many light-emitting positions, a first reflective element 2 can be provided for each light-emitting position, or a first reflective element 2 that can reflect light emitted from all light-emitting positions can be provided.

[0055] Referring to Figure 9, as a specific embodiment of the present application, multiple first reflective elements 2 can be connected in sequence along the horizontal direction or along the vertical direction. In this way, several sub-illumination light patterns can be formed after the light is reflected twice, wherein the first reflective elements 2 are arranged in a one-to-one correspondence with the light sources 1. The "one-to-one correspondence" here can be understood as a light source 1 is set at the focus of each first reflective element 2. The light source 1 can be a single-chip LED. Secondly, the light source 1 can also be a multi-chip LED, and a one-to-one correspondence can also be achieved. It should be noted that, in this specific embodiment, a plurality of first reflecting elements 2 are provided, and each first reflecting element 2 is correspondingly configured with a light source 1 capable of emitting light. The plurality of first reflecting elements 2 reflect the light emitted by the corresponding light source 1, and the light reflected by the first reflecting element 2 is reflected for a second time by the second reflecting element 3. In this process, the light reflected by each first reflecting element 2 is reflected by the second reflecting element 3 to form a first lighting light pattern and a second lighting light pattern. A first lighting light pattern and a second lighting light pattern are superimposed to form a complete lighting light pattern. A complete lighting light pattern can be understood as a sub-lighting light pattern. The number of first reflecting elements 2 can be determined according to actual installation needs, and the number of complete sub-lighting light patterns that can be formed can be further confirmed. As shown in Figure 11, multiple sub-lighting light patterns can be superimposed to form a final lighting light pattern, which can be formed by cooperating with other components to form a low beam light pattern or a high beam light pattern.

[0056] It should be noted that "in the horizontal direction or in the vertical direction" in the above specific embodiment can be understood as, referring to Figure 9, when the light emitting position of the light source 1 is set in sequence in the horizontal direction, the first reflecting element 2 corresponding to each light emitting position is also connected in sequence in the horizontal direction, and correspondingly, the curved reflecting element 31 and the flat reflecting element 32 in the second reflecting element 3 are set in sequence in the vertical direction; in addition, as another specific embodiment of the present application, when the light emitting position of the light source 1 is set in sequence in the vertical direction, the first reflecting element 2 corresponding to each light emitting position is also connected in sequence in the vertical direction, and correspondingly, the curved reflecting element 31 and the flat reflecting element 32 in the second reflecting element 3 are set in sequence in the horizontal direction.

[0057] The lighting module provided in the first aspect of the present application has a simple structure. In traditional reflective lighting systems, in order to ensure the brightness of the light pattern, a long-focal-length reflector is selected for reflection. During the reflection process, the reflected light will interfere with each other and generate stray light. In addition, the installation space occupied by the long-focal-length reflector is large, and a larger light output opening is required. The present application cooperates with the first reflective element 2 and the second reflective element 3, wherein the focal length of the first reflective element is less than 10mm, preferably 2-5mm, which can shorten the distance of light reflection, avoid mutual interference of light, avoid the generation of stray light, and fully utilize the light emitted by the light source 1 to avoid light loss. Moreover, due to the shortening of the light reflection distance, the installation space required for the first reflective element 2 and the second reflective element 3 can be further reduced, and the light output opening can be further reduced.

[0058] Furthermore, the second reflective element 3 includes a flat reflective element 32 and a curved reflective element 31. After the first reflective element 2 reflects the light emitted by the light source 1 once, the curved reflective element 31 in the second reflective element 3 can reflect the light with a shorter reflection distance twice, and the flat reflective element 32 in the second reflective element 3 can reflect the light with a longer reflection distance twice, so that the middle area of ​​the sub-illumination light type after the first illumination light type and the second illumination light type are superimposed has sufficient brightness and ensures the widening of the sub-illumination light type. The secondary reflection of the light can further reduce the focal length of the first reflective element 2, while ensuring the widening and brightness of the formed light type, improving the clarity of the light type imaging, and further reducing the light output opening. Even if the light source 1 is a multi-light-emitting chip integrated light source, multiple first reflective elements 2 can be provided, and the second reflective element 3 can be used to perform secondary reflection to ensure the clarity and brightness of the imaging. It can be understood that the "reflection distance" refers to the distance between the light source 1 and the reflecting surface of the first reflective element 2.

[0059] Further, referring to Figure 3, as one of the specific embodiments of the second reflective element 3 of the present application, the curved reflective element 31 and the flat reflective element 32 are connected in the up and down directions, the curved reflective element 31 is located above the flat reflective element 32, and the reflective surface of the first reflective element 2 is facing away from the direction of the light output opening. This setting is to match the light output direction of the light source 1. If the light output direction of the light source 1 is consistent with the direction of the light output opening, light loss or stray light can be avoided. During the design, the curved reflective element 31 can be set below the flat reflective element 32, which can not only form a clearer and brighter light pattern, but also can be further reflected by the second reflective element 3 before the light interferes with each other or diverges, thereby avoiding light loss or stray light. At the same time, it shortens the light propagation path and reduces the size of the light output opening.

[0060] As shown in FIG4 , when the curved reflective element 31 is provided, the focal point of the curved reflective element 31 is located on the reflective surface of the first reflective element 2, or can be located outside the reflective surface of the first reflective element 2. Specifically, focus A can be understood as the focal point of the curved reflective element 31 located on the first reflective element 2. This arrangement is intended to ensure that the curved reflective element 31 receives a portion of the light reflected by the first reflective element 2, thereby forming a first illumination light pattern. While ensuring that the first illumination light pattern can be formed, light loss and waste are avoided. It should be noted that, depending on actual usage, when the curved reflective element 31 is provided, in order to avoid light loss and waste, the focal point of the curved reflective element 31 can be located on the reflective surface of the first reflective element 2 or outside the reflective surface of the first reflective element 2, or can be located close to the light source 1. It is understood that, as shown in FIG4 and FIG5 , the distance between the reflective surface of the first reflective element 2 and the light source 1 gradually increases from top to bottom. “Close” means that the focal point of the curved reflective element 31 can be located on the reflective surface of the first reflective element 2 or outside the reflective surface of the first reflective element 2, where the distance from the light source 1 is small.

[0061] In the present application, referring to FIG. 1 and FIG. 3 , as some specific embodiments of the first reflective element 2, the reflective surface of the first reflective element 2 can be a parabola, a quasi-parabola, an ellipsoid or a quasi-ellipsoid. When the reflective surface of the first reflective element 2 is a parabola reflective surface or a quasi-parabola reflective surface, the light source 1 can be arranged at the focus of the parabola reflective surface or the quasi-parabola reflective surface. When the reflective surface of the first reflective element 2 is an ellipsoid reflective surface or a quasi-ellipsoid reflective surface, the light source 1 can be arranged at the first focus of the ellipsoid reflective surface or the quasi-ellipsoid reflective surface. In this way, after the light source 1 emits light, the light is reflected by the first reflecting element 2 to form parallel light or quasi-parallel light. Since the second reflecting element 3 is provided with a plane reflecting element 32, when the light is reflected for the second time by the plane reflecting element 32, the light emitted by the first reflecting element 2 and the light reflected by the plane reflecting element 32 are symmetrical about the normal of the reflecting surface of the plane reflecting element 32. Therefore, the projection position of the second lighting light type can be adjusted by changing the angle between the plane reflecting element 32 and the horizontal direction.

[0062] Furthermore, since the first lighting light pattern formed by the light reflected by the curved reflective element 31 is used to ensure that the lighting light pattern has a larger width, the curved reflective element 31 receives and reflects the light emitted by the light source 1 from the plane where the light-emitting surface of the light source 1 is located to the area rotated 10° to 90° counterclockwise. It can be understood that, as shown in Figure 3, the plane where the light-emitting surface of the light source 1 is located is used as the reference plane, and a plane rectangular coordinate system is established in this plane. The y-axis is set in the vertical direction in the plane where the light-emitting surface of the light source 1 in the figure is located. The light source 1 is located at the origin of the plane rectangular coordinate system, and the y-axis is rotated 0° to 90° counterclockwise. The light passing through the rotated area is received and reflected by the curved reflective element 31, which can avoid loss and waste of light while ensuring the width of the lighting light pattern. As a preferred embodiment, the curved reflective element 31 can reflect light from the plane where the light-emitting surface of the light source 1 is located to the area within 10° to 90° rotated counterclockwise from the plane. Specifically, when establishing a coordinate system, the focus of the first reflective element 2 is used as the origin, extending upward to form the y-axis, with the origin as the vertex. Light emitted by the light source 1 within the area within 10° to 90° rotated counterclockwise from the y-axis is received and reflected by the curved reflective element 31. It should be noted that the light reflected by the curved reflective element 31 can also be light from the plane where the light-emitting surface of the light source 1 is located to the area within 0° to 10° rotated counterclockwise from the plane. It is understandable that the area where the light reflected by the curved reflective element 31 is located can be selected according to the specific usage environment, as long as the portion of light is within the area from the plane where the light-emitting surface of the light source 1 is located to the area within 10° to 90° rotated counterclockwise from the plane.

[0063] Referring to Figures 12 and 13 , as another specific embodiment of the second reflective element 3 in the present application, a curved reflective element 31 and a flat reflective element 32 are connected in the vertical direction, with the flat reflective element 32 located above the curved reflective element 31. The reflective surface of the first reflective element 2 faces the direction of the light output opening. When the light output direction of the light source 1 is opposite to the direction of the light output opening, the first reflective element 2 can still fully reflect the light emitted by the light source 1, and the second reflective element 3 can still receive the light reflected by the first reflective element 2 and form the first and second illumination light patterns after reflection.

[0064] Further, referring to Figure 13, when the light emitting direction of the light source 1 is opposite to the direction of the light emitting opening, the end of the first reflecting element 2 is connected to the end of the second reflecting element 3 to form an integrated structural component, wherein the reflecting surface of the first reflecting element 2 and the reflecting surface of the second reflecting element 3 are both facing the direction of the light emitting opening. The first reflecting element 2 and the second reflecting element 3 are connected to form an integrated structural component, which makes the structure simpler. Not only can the structure of the overall lighting module be more stable, and the production cost can be reduced during manufacturing, the integrated structural component can also make installation more convenient and improve the later installation efficiency.

[0065] It should be noted that when the first reflecting element 2 and the second reflecting element 3 are an integrated structural component, multiple first reflecting elements 2 are arranged to form a structural form as shown in Figure 12, multiple first reflecting elements 2 are connected in the horizontal direction, and one end of multiple first reflecting elements 2 is connected to the second reflecting element 3, and further, they can be formed into an integrated structural component.

[0066] It should also be noted that, as shown in FIG10 , the spacing between several lighting light patterns can be adjusted by adjusting the angle between the optical axes of each first reflective element 2 to obtain a lighting light pattern with sufficient brightness. For example, b in FIG10 represents the angle between the optical axes of two adjacent first reflective elements 2, and the opening direction of the angle faces the light source 1. When manufacturing and arranging the first reflective elements 2, the angle b can be selected according to the design requirements of the car lamp, and the angle b is not greater than 30°.

[0067] It can also be understood that, as a specific embodiment, as shown in Figure 10, when the lighting module has several first reflecting elements 2, and the number of the first reflecting elements 2 is odd, the end of each first reflecting element 2 away from the light source 1 moves closer to the first reflecting element 2 located in the middle, so that the optical axes of the first reflecting elements 2 on both sides of the first reflecting element 2 in the middle are at an angle of no more than 30° to the optical axis of the first reflecting element 2 in the middle, so as to obtain a lighting light pattern with sufficient brightness.

[0068] Furthermore, referring to Figures 13 and 15, to align with the aforementioned specific embodiments, the curved reflective element 31 is positioned below the planar reflective element 32, and the light emitting direction of the light source 1 is opposite to the location of the light outlet. Therefore, the curved reflective element 31 receives and reflects light emitted by the light source 1 from the plane of the light emitting surface of the light source 1 to the area within a 10° to 90° clockwise rotation thereof. It is understood that, with the plane of the light emitting surface of the light source 1 as the reference plane, a rectangular coordinate system is established within this plane, wherein the y-axis is the same as in Figure 3, located in the plane of the light emitting surface of the light source 1 and arranged in a vertical direction, and the light source 1 is located at the origin of the rectangular coordinate system. The y-axis is rotated 90° clockwise, and the light passing through the rotated area is received and reflected by the curved reflective element 31. This ensures that the illumination pattern has sufficient width while avoiding light loss and waste. Furthermore, as shown in Figure 15, assuming that the height of the first reflective element 2 is D and the height of the planar reflective element 32 is d or extends to the right to be greater than d, the brightness of the central area of ​​the light pattern is increased. It should be noted that in this embodiment, the light source 1 is located at the focal point of the first reflective element 2. Therefore, when the focal points of the light source 1 and the first reflective element 2 do not coincide, when establishing a coordinate system using the cross-section as a plane, the y-axis is extended upward from the focal point of the first reflective element 2 as the origin. Light emitted by the light source 1 within the region of 10° to 90° rotated clockwise about the y-axis with the origin as the vertex is received and reflected by the curved reflective element 31. Furthermore, taking FIG. 15 as an example, the light source 1 is located at the focal point of the first reflective element 2. The range of light that can be received by the curved reflective element 31 and the flat reflective element 32 is limited based on the actual width and brightness of the illumination pattern. As shown in FIG. 15 , region c represents the light emitted by the light source 1 that can be received by the curved reflective element. A vertical line perpendicular to the horizontal direction is drawn downward from the intersection of the boundary of region c and the lower point of the first reflective element 2. The intersection of this vertical line with the second reflective element 3 is the intersection of the curved reflective element 31 and the flat reflective element 32.

[0069] Secondly, as a specific embodiment of the curved reflective element 31 of the present application, the reflective surface of the curved reflective element 31 can be a curved surface formed by stretching a parabola in a single direction. The curved surface formed by stretching the parabola can effectively receive part of the light reflected by the first reflective element 2 and reflect it. By adjusting the length or curvature of the parabola, the widening of the first lighting light type formed after the curved reflective element 31 reflects the light can be further adjusted to ensure the widening of the sub-lighting light type formed after the first lighting light type is superimposed with the second lighting light type.

[0070] Referring to Figure 14, as another specific embodiment of the curved reflective element 31 in the present application, the reflective surface of the curved reflective element 31 can also be a quasi-curved surface formed by stretching multiple connected broken lines in a single direction. As shown in Figure 14, point B is the endpoint of each broken line, and the length of each broken line is a. Each broken line segment is stretched in a single direction to form a small reflective surface, and then a curved surface-like reflective surface formed by combining several small reflective surfaces formed by stretching is used to reflect the light for a second time, which can adjust the uniformity of the light type and avoid problems such as dark spots. It should be noted that "quasi-curved surface" refers to a planar splicing surface with a similar curvature to a curved surface. Because it does not have a smooth and continuous curved surface shape, it is called a quasi-curved surface.

[0071] In the present application, referring to FIG14 , as a specific embodiment of the planar reflective element 32, the reflective surface of the planar reflective element 32 is formed by a plurality of parallel and non-coplanar planar reflective surfaces connected in sequence. The planar reflective structure formed can adjust the light type that needs to be reflected twice, so that the formed light type is more uniform and the imaging is clearer.

[0072] In addition, there are many ways to connect the plane reflective element 32 and the curved reflective element 31 in the present application. As one specific embodiment, see Figure 1. The curved reflective element 31 and the plane reflective element 32 can be directly connected, for example, maintaining point continuity or tangent continuity at the connection point, so that the curved reflective element 31 and the plane reflective element 32 can have a smooth transition. Such a design can make the structure of the second reflective element 3 simpler and more convenient during later installation.

[0073] Referring to Figure 5, as a specific embodiment of another connection method between the curved reflective element 31 and the flat reflective element 32, the curved reflective element 31 and the flat reflective element 32 can be connected through a stepped surface. The stepped surface connection method can avoid the curved reflective element 31 and the flat reflective element 32 interfering with each other when reflecting corresponding parts of light, thereby avoiding the generation of stray light.

[0074] It should be noted that the plane reflective element 32 and the curved reflective element 31 can also be directly connected after the position is determined. The "determined position" here means that the focus of the curved reflective element 31 is located on the reflective surface of the first reflective element 2 and close to the light source 1, or is located outside the reflective surface of the first reflective element 2 and close to the light source 1. The plane reflective element 32 is located below or above the curved reflective element 31 and is configured to reflect light to form a second lighting light pattern. The second lighting light pattern is located in the middle area of ​​the first lighting light pattern, so that the middle area of ​​the lighting light pattern finally formed has higher brightness.

[0075] It should also be noted that the above-mentioned specific embodiments are only some specific embodiments of the second reflective element 3 in this application. The specific embodiments of the second reflective element 3 in this application are not limited to these. Other simple deformation technical solutions that can achieve similar technical effects also fall within the scope of protection of this application.

[0076] Furthermore, because the present application provides a second reflecting element 3 for secondary reflection of light, the first reflecting element 2 can adopt a reflecting element with a small focal length, and the focal length of the first reflecting element 2 can be less than 10 mm. Because the light can be reflected twice and the brightness is guaranteed, the first reflecting element 2 does not need to use a reflecting element with a large focal length in order to ensure the brightness of the imaging. In this way, the size of the light output opening can be reduced as much as possible.

[0077] Preferably, with the cooperation of the first reflecting element 2 and the second reflecting element 3, the light emitted by the light source 1 can be reflected twice to form a sub-illumination light pattern. The combination and superposition of several sub-illumination light patterns can form a low beam light pattern or a high beam light pattern. Therefore, the focal length of the first reflecting element 2 can preferably be between 2 mm and 5 mm, so that the light output opening can be further narrowed.

[0078] In the present application, as a specific embodiment of the setting of the light source 1, as shown in Figures 3 and 15, the plane where the light-emitting surface of the light source 1 is located is at an angle of less than 30° to the light-emitting direction of the first reflective element 2. Specifically, the plane where the light-emitting surface of the light source 1 is located, which is set in the vertical direction, is used as the basic plane. According to the different settings of the first reflective element 2, the plane where the light-emitting surface of the light source 1 is located can be rotated relative to the basic plane so that the plane where the light-emitting surface of the light source 1 is located is at an angle of less than 30° to the light-emitting direction of the first reflective element 2, so as to improve the lighting efficiency. The rotation angle is shown as e in Figure 15. In addition, as other specific embodiments of the present application, in order to improve the lighting efficiency and meet the requirements of the narrow and long car lights currently on the market, the first reflective element 2 and the second reflective element 3 as shown in Figure 15 can be respectively set on both sides of the light source 1 as the center. In this way, the requirements of the narrow and long car lights can be met, and both the lighting effect of the light pattern and the length of the light pattern can be guaranteed. The lighting module provided in the first aspect of the present application can perform secondary reflection on the light source 1 through the cooperation of the first reflecting element 2 and the second reflecting element 3, thereby improving the clarity of the imaging, avoiding the loss and waste of light, and avoiding the appearance of stray light. In addition, the secondary reflection of the light can not only ensure the brightness of the imaging, but also replace the large-focal-length reflector in the traditional reflective lighting module, thereby reducing the light output opening.

[0079] A second aspect of the present application provides a lighting system, as shown in FIG1 , comprising the lighting module of the first aspect and a circuit board, on which a light source 1 is mounted. Because the light output opening of the lighting module is small, the installation space required for the lighting system is also reduced.

[0080] Furthermore, the lighting system further includes a radiator 4 , the circuit board is connected to the radiator 4 , and the radiator 4 can dissipate heat from the lighting system.

[0081] The third aspect of the present application provides a vehicle, which adopts the above-mentioned lighting system, and the lighting system has the lighting module provided by the first aspect of the present application. Due to the presence of the lighting module, the size of the light output opening can be reduced, thereby diversifying the shape of the headlights, for example, making the headlights have a narrow and long shape.

[0082] In the description of this application, reference to terms such as "one embodiment," "some embodiments," or "a specific implementation" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In this application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0083] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.

[0084] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not further describe various possible combinations.

[0085] In addition, the various implementation methods of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A lighting module, characterized in that, Comprising: A light source (1), at least one first reflection element (2), and at least one second reflection element (3) arranged in sequence along the light propagation direction. The first reflection element (2) is configured to receive the light emitted by the light source (1) and reflect the light towards the second reflection element (3). The second reflection element (3) includes a curved surface reflection element (31) and a plane reflection element (32) connected in sequence along the up-down direction. The curved surface reflection element (31) is configured to receive a part of the light reflected by the first reflection element (2) and reflect this part of the light towards the light-emitting opening to form a first illumination light pattern. The plane reflection element (32) is configured to receive another part of the light reflected by the first reflection element (2) and reflect this part of the light towards the light-emitting opening to form a second illumination light pattern. The first illumination light pattern can be superimposed with the second illumination light pattern to form a desired illumination light pattern. Wherein, when the curved surface reflection element (31) is located above the plane reflection element (32), the reflection surface of the first reflection element (2) faces away from the direction where the light-emitting opening is located. When the plane reflection element (32) is located above the curved surface reflection element (31), the reflection surface of the first reflection element (2) faces towards the direction where the light-emitting opening is located.

2. The lighting module according to claim 1, characterized in that, When the curved surface reflection element (31) is located above the plane reflection element (32), the focus of the curved surface reflection element (31) is located on the reflection surface of the first reflection element (2).

3. The lighting module according to claim 2, wherein The curved surface reflection element (31) receives and reflects the light emitted by the light source (1) within the region from the plane where the light-emitting surface of the light source (1) is located to the region rotated 10° to 90° counterclockwise along it.

4. The lighting module according to claim 1, wherein When the plane reflection element (32) is located above the curved surface reflection element (31), the end of the first reflection element (2) is connected to the end of the second reflection element (3) to form an integral structural member, and the reflection surfaces of both the first reflection element (2) and the second reflection element (3) face towards the direction where the light-emitting opening is located.

5. The lighting module according to claim 4, wherein The curved surface reflection element (31) receives and reflects the light emitted by the light source (1) within the region from the plane where the light-emitting surface of the light source (1) is located to the region rotated 10° to 90° clockwise along it.

6. The lighting module according to any one of claims 1 to 5, characterized in that, The reflection surface of the curved surface reflection element (31) is a curved surface formed by stretching a parabola in a single direction.

7. The lighting module according to any one of claims 1 to 5, characterized in that The reflection surface of the curved surface reflection element (31) is a quasi-curved surface formed by stretching a connected multi-segment broken line in a single direction.

8. The lighting module according to any one of claims 1 to 5, characterized in that, The reflection surface of the plane reflection element (32) is a plane reflection structure formed by sequentially connecting a plurality of parallel and non-coplanar plane reflection surfaces.

9. The lighting module according to any one of claims 1 to 5, characterized in that, The curved surface reflection element (31) and the plane reflection element (32) are connected through a stepped surface.

10. The lighting module according to any one of claims 1 to 5, characterized in that, The reflection surface of the first reflection element (2) is a paraboloid, a quasi-paraboloid, an ellipsoid, or a quasi-ellipsoid.

11. The lighting module according to claim 10, characterized in that, The focal length of the first reflection element (2) is less than 10 mm, preferably 2 - 5 mm.

12. The lighting module according to any one of claims 1 to 5, characterized in that, A plurality of the first reflecting elements (2) are connected in sequence along the horizontal direction, and the first reflecting elements (2) and the light sources (1) are arranged in one-to-one correspondence.

13. The lighting module according to claim 12, wherein An included angle is formed between the optical axes of two adjacent first reflecting elements (2), the opening of the included angle faces the light source (1), and the included angle is not greater than 30°.

14. The lighting module according to any one of claims 1 to 5, characterized in that, The plane where the light emitting surface of the light source (1) is located forms an included angle within 30° with the light output direction of the first reflecting element (2).

15. A lighting system, characterized in that, It includes the lighting module according to any one of claims 1 to 14 and a circuit board, and the light source (1) is installed on the circuit board.

16. The lighting system according to claim 15, wherein It further includes a radiator (4), and the circuit board is connected to the radiator (4).

17. A vehicle, characterized in that, It includes the lighting system according to claim 15 or 16.

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