Low beam module, vehicle lamp and vehicle

Abstract

The low-beam module, the vehicle lamp and the vehicle provided in the embodiments of the present application comprise a light source, a reflector and a lens; the reflector has a first focal point and a second focal point, the lens has a third focal point, and the third focal point is located between the first focal point and the second focal point; and the light source is arranged at the first focal point. Through the reasonable layout of the optical structural members, the utilization rate of light can be improved, the optical efficiency and the luminous flux can be improved, and thus the lighting effect of the low-beam module can be improved.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and more particularly to a low beam module, automotive lighting, and vehicle. Background Technology

[0002] The low beam module of a vehicle headlight is one of the core components of the vehicle's lighting system. Its core function is to provide the driver with clear and safe short-range road illumination while avoiding glare interference from oncoming drivers or pedestrians. However, existing low beam modules suffer from low optical efficiency and insufficient luminous flux, thus affecting their lighting performance. Utility Model Content

[0003] This application provides a low beam module, a headlight, and a vehicle, aiming to improve the problem of low optical efficiency and insufficient luminous flux of the low beam module, which affects the lighting effect of the low beam module.

[0004] In a first aspect, embodiments of this application disclose a low beam module, including a light source, a reflector, and a lens;

[0005] The reflector has a first focal point and a second focal point, and the lens has a third focal point, wherein the third focal point is located between the first focal point and the second focal point;

[0006] The light source is located at the first focal point.

[0007] In this embodiment, since the light source is positioned at the first focal point of the reflector, the light emitted by the light source can be reflected by the reflector and converged as much as possible to the second focal point, thereby improving light utilization and enhancing the illumination effect of the low beam module. More importantly, since the third focal point of the lens is located between the first and second focal points of the reflector, the image of the lens is closer to the reflector, thereby improving the lens's reception of reflected light. This enhances the optical efficiency and luminous flux of the low beam module, further improving its illumination effect. In summary, this embodiment, through the rational arrangement of various optical components, not only improves light utilization but also enhances optical efficiency and luminous flux, thus improving the illumination effect of the low beam module.

[0008] Optionally, the low beam module further includes a light shield, which is disposed at the third focal point.

[0009] In this embodiment, since the light-shielding plate is located at the third focal point of the lens, a clear cutoff line between light and dark can be formed, effectively avoiding glare interference and improving the lighting effect of the low beam module.

[0010] Optionally, the low beam module further includes a light shield, which is disposed between the third focal point and the second focal point.

[0011] In this embodiment, since the light shield is located between the third focal point of the lens and the second focal point of the reflector, it can not only form a clear cutoff line between light and dark, effectively avoiding glare interference and improving the lighting effect of the low beam module; but also the position of the light shield is relatively flexible, which can meet the light shielding requirements of different types of low beam modules.

[0012] Optionally, the distance between the first focal point and the third focal point is less than the distance between the second focal point and the third focal point.

[0013] In this embodiment, by setting the third focal point close to the first focal point, the image of the lens can be brought closer to the reflector, thereby further improving the lens's reception of reflected light and further enhancing the optical efficiency and luminous flux of the low beam module.

[0014] Optionally, the low beam module further includes: a heat sink, wherein the heat sink and the lens are sequentially arranged and interconnected along a first direction, and the heat sink includes a mounting surface intersecting the first direction;

[0015] The light source and the light shield are spaced apart on the mounting surface along the first direction, and the light shield is close to the lens;

[0016] The reflector is disposed on the mounting surface and at least covers the light source and the light shield.

[0017] In this embodiment, by incorporating a heat sink, and by placing the light source, light shield, and reflector on the mounting surface, and connecting the lens to the heat sink, the light source, light shield, reflector, and lens can be integrated into a single unit for subsequent assembly. Furthermore, during the use of the low beam module, the light source generates heat; by incorporating a heat sink, heat dissipation is achieved, ensuring that the operating temperature of the light source remains within a safe range.

[0018] Optionally, the reflector includes a first reflector, a second reflector, and a third reflector arranged sequentially.

[0019] The light source includes a first light source, a second light source, and a third light source arranged at intervals. The first light source is located at the first focal point of the first reflector, the second light source is located at the first focal point of the second reflector, and the third light source is located at the first focal point of the third reflector.

[0020] The lens includes a first lens portion, a second lens portion, and a third lens portion arranged sequentially. The first lens portion corresponds to the position of the first light source, the second lens portion corresponds to the position of the second light source, and the third lens portion corresponds to the position of the third light source. The first lens portion is used to refract the light emitted by the first light source to the front of the low beam module, the second lens portion is used to refract the light emitted by the second light source to the front side of the low beam module, and the third lens portion is used to refract the light emitted by the third light source to the side of the low beam module.

[0021] In this embodiment, by setting a first reflector, a second reflector, and a third reflector, and by placing the first light source at the first focal point of the first reflector, the second light source at the first focal point of the second reflector, and the third light source at the first focal point of the third reflector, the utilization rate of the light emitted by the first, second, and third light sources can be improved, which is beneficial to further improving the overall lighting effect of the low beam module. When the low beam module is used in the headlights of a vehicle, the presence of a first lens, a second lens, and a third lens, which can refract the light emitted by the corresponding light sources to the front, front side, and side of the low beam module respectively, can achieve omnidirectional lighting for the low beam module, thus improving the lighting effect of both the low beam module and the headlights.

[0022] Optionally, the distance between the first light source and the first lens portion, the distance between the second light source and the second lens portion, and the distance between the third light source and the third lens portion decrease sequentially.

[0023] In this embodiment, because the distance between the first light source and the first lens is the largest (i.e., the distance between the light-emitting surfaces of the first light source and the first lens is greater), the image of the light source after passing through the lens is smaller and the energy is concentrated, thus adapting to the lighting of this lane. Because the distance between the third light source and the third lens is the smallest (i.e., the distance between the light-emitting surfaces of the third light source and the third lens is closer), the imaging range is larger, thus adapting to the lighting of both sides of the road. Because the distance between the second light source and the second lens is moderate (i.e., the distance between the light-emitting surfaces of the second light source and the second lens is moderate), it can adapt to the lighting of both lanes. In other words, this embodiment, by controlling the distance between each light source and the lens, can adapt to lighting needs in different directions, which is beneficial to further improving the overall lighting effect of the low beam module.

[0024] Optionally, the first reflector includes a first reflective portion, and the first light source includes a single-chip light-emitting diode, wherein the single-chip light-emitting diode is disposed at the first focal point of the first reflective portion;

[0025] And / or, the second reflector includes two second reflective portions, and the second light source includes two single-chip light-emitting diodes, one of which is disposed at the first focal point of one of the second reflective portions;

[0026] And / or, the third reflector includes three third reflective portions, and the third light source includes three single-chip light-emitting diodes, with one of the single-chip light-emitting diodes disposed at the first focal point of one of the third reflective portions.

[0027] In this embodiment, by employing single-chip LEDs, on the one hand, compared to halogen lamps, single-chip LEDs have higher photoelectric conversion efficiency and lower heat load, thereby saving energy and reducing the burden on the heat sink. On the other hand, compared to multi-chip light-emitting diodes (i.e., multi-chip LEDs), single-chip LEDs generate less heat and the heat is more dispersed, further reducing the burden on the heat sink and improving its heat dissipation efficiency. Furthermore, since each single-chip LED is positioned at the first focal point of a reflective portion (including a first reflective portion, a second reflective portion, and a third reflective portion), the utilization rate of the light emitted by the single-chip LED can be improved, further enhancing the overall lighting effect of the low-beam module. Furthermore, based on the principle of using light sources at different locations to achieve illumination in different directions, when the first light source is equipped with a single-chip LED, it can meet the lighting needs of this lane; when the second light source is equipped with two single-chip LEDs, it can meet the lighting needs of both lanes; and when the third light source is equipped with three single-chip LEDs, it can meet the lighting needs of both sides of the road. That is, the low beam module of this application embodiment can achieve all-round illumination by setting six single-chip LEDs, which can reduce the manufacturing cost of the low beam module while meeting the lighting needs of the low beam module.

[0028] Secondly, this application also discloses a vehicle headlight, including the aforementioned low beam module.

[0029] In the embodiments of this application, by adopting the above-mentioned low beam module, not only can the utilization rate of light be improved and glare interference be avoided, but also the optical efficiency and luminous flux can be improved, thereby improving the overall lighting effect of the vehicle headlights.

[0030] Thirdly, embodiments of this application also disclose a vehicle including the aforementioned vehicle lights.

[0031] In the embodiments of this application, by adopting the above-mentioned vehicle lights, not only can road lighting be optimized and glare effectively controlled, thereby improving driving safety, but also driver visual fatigue can be reduced, thereby enhancing driving comfort. Attached Figure Description

[0032] Figure 1This is one of the structural schematic diagrams of a low beam module provided in an embodiment of this application;

[0033] Figure 2 This is a second schematic diagram of the low beam module provided in one embodiment of this application;

[0034] Figure 3 This is the third schematic diagram of the low beam module provided in one embodiment of this application;

[0035] Figure 4 This is the fourth schematic diagram of the low beam module provided in one embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the low beam module provided in another embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the structure of a heat sink provided in an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Light source; 11. First light source; 12. Second light source; 13. Third light source; 2. Reflector; 21. First reflector; 22. Second reflector; 23. Third reflector; 3. Light shield; 31. First light shield; 32. Second light shield; 33. Third light shield; 4. Lens; 41. First lens section; 42. Second lens section; 43. Third lens section; 5. Heat sink; 51. Mounting surface; 52. Partition; 6. Circuit board; 7. Dimming bracket; 8. Decorative ring; F1. First focal point; F2. Second focal point; F. Third focal point; X. First direction. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] In related technologies, low beam modules typically include a light source, a reflector, a light shield, and a lens. The light source emits light, the reflector reflects light, the light shield blocks at least part of the light, and the lens refracts light. However, when the layout of these optical components is unreasonable, it can lead to low optical efficiency and insufficient luminous flux in the low beam module, thus affecting its illumination effect.

[0042] This application provides a low beam module, which will be described in detail below with reference to the accompanying drawings.

[0043] like Figures 1 to 5As shown, this application provides a low beam module, including a light source 1, a reflector 2, and a lens 4; the reflector 2 has a first focal point F1 and a second focal point F2, and the lens 4 has a third focal point F, which is located between the first focal point F1 and the second focal point F2; wherein, the light source 1 is disposed at the first focal point F1. The light source 1 is used to emit light, the reflector 2 is used to reflect light, and the lens 4 is used to refract light.

[0044] In this embodiment, since the light source 1 is positioned at the first focal point F1 of the reflector 2, the light emitted by the light source 1 can be reflected by the reflector 2 and converged as much as possible to the second focal point F2, thereby improving the light utilization rate and enhancing the illumination effect of the low beam module. More importantly, since the third focal point F of the lens 4 is located between the first focal point F1 and the second focal point F2 of the reflector 2, the image of the lens 4 is closer to the reflector 2, thereby improving the lens 4's reception of reflected light. This enhances the optical efficiency and luminous flux of the low beam module, further improving its illumination effect. In summary, this embodiment, through the rational arrangement of various optical components, not only improves the light utilization rate and avoids glare interference, but also enhances optical efficiency and luminous flux, thereby improving the illumination effect of the low beam module.

[0045] It should be noted that the reflector 2 in this embodiment can be in the shape of an ellipsoid or a freeform surface. Taking the ellipsoidal reflector 2 as an example, since the light emitted from the first focal point F1 will inevitably pass through the second focal point F2 after reflection, when the light source 1 is set at the first focal point F1, the light emitted by the light source 1 can be reflected by the reflector 2 and converged to the second focal point F2 with almost no loss, thereby effectively improving the utilization rate of light.

[0046] In some embodiments, such as Figure 4 As shown, the low beam module also includes a light shield 3, which is disposed at the third focal point F. The light shield 3 is used to block at least a portion of the light.

[0047] In this embodiment, since the light shield 3 is located at the third focal point F of the lens 4, a clear cutoff line between light and dark can be formed, effectively avoiding glare interference and improving the lighting effect of the low beam module.

[0048] In some embodiments, such as Figure 5 As shown, the low beam module also includes a light shield 3, which is disposed between the third focal point F and the second focal point F2. The light shield 3 is used to block at least a portion of the light.

[0049] In this embodiment, since the light shield 3 is disposed between the third focal point F of the lens 4 and the second focal point F2 of the reflector 2, it can not only form a clear cut-off line between light and dark, effectively avoiding glare interference and improving the lighting effect of the low beam module; but also the placement of the light shield 3 is relatively flexible and can meet the light shielding requirements of different types of low beam modules.

[0050] In some embodiments, such as Figures 3 to 5 As shown, the light source 1 and the light shield 3 are spaced apart along the first direction X, and the reflector 2 and the lens 4 are spaced apart along the first direction X. The reflector 2 at least covers the light source 1 and the light shield 3, so that at least part of the light emitted by the light source 1 can propagate to the reflector 2 and be reflected by the reflector 2, and at least part of the light reflected by the reflector 2 can propagate to the light shield 3 and be blocked by the light shield 3. Specifically, in practical applications, the reflector 2 can be placed above the light source 1 and the light shield 3, and the light source 1 and the light shield 3 are located on the central axis of the reflector 2. Based on this, the main propagation path of light in the low beam module of this application embodiment is roughly as follows: part of the light emitted by the light source 1 propagates to the reflector 2, part of the light reflected by the reflector 2 propagates to the light shield 3, part of the light not blocked by the light shield 3 propagates to the lens 4, and part of the light refracted by the lens 4 is emitted to the external environment, thereby achieving illumination.

[0051] In some optional embodiments of this application, the distance between the first focal point F1 and the third focal point F is smaller than the distance between the second focal point F2 and the third focal point F. That is, the third focal point F is closer to the first focal point F1. In this way, the image of the lens 4 can be brought closer to the reflector 2, thereby further improving the receiving effect of the lens 4 on the reflected light, and further improving the optical efficiency and light throughput of the low beam module.

[0052] like Figure 4 As shown, generally, the distance b between the first focal point F1 and the second focal point F2 of the reflector 2 is 10mm to 100mm. Based on this, in some optional embodiments of this application, the distance a between the first focal point F1 and the third focal point F is 4mm to 6mm. In this way, on the one hand, the optical efficiency and luminous flux of the low beam module can be further improved, which is beneficial to further improving the illumination effect of the low beam module. On the other hand, it can provide sufficient installation space for other components, which is beneficial to reducing the assembly difficulty of the low beam module. Specifically, the low beam module also includes a circuit board 6, which is arranged adjacent to the light shield 3. The light source 1 is disposed on the circuit board 6, and the circuit board 6 is used to provide power to the light source 1. It has been tested that when the distance a between the first focal point F1 and the third focal point F is 4mm to 6mm, there is sufficient wiring space between the light source 1 and the light shield 3, which is beneficial to reducing the assembly difficulty of the light source 1, the circuit board 6 and the light shield 3 in the low beam module.

[0053] It should be noted that the specific value of the distance 'a' between the first focal point F1 and the third focal point F is not limited in the embodiments of this application, and those skilled in the art can adjust it according to actual needs. In one embodiment, the distance 'a' between the first focal point F1 and the third focal point F is 5.8 mm, which can balance the requirements of optical efficiency and luminous flux, as well as the wiring requirements of the circuit board 6, which is beneficial to further improve the illumination effect of the low beam module and reduce the assembly difficulty of the low beam module. In addition, the circuit board 6 can be a printed circuit board (PCB), which has greater rigidity and can reliably support the light source 1.

[0054] In some optional embodiments of this application, such as Figure 2 and Figure 6 As shown, the low beam module also includes: a heat sink 5, which is sequentially arranged and interconnected with the lens 4 along a first direction X. The heat sink 5 includes a mounting surface 51 intersecting the first direction X; a light source 1 and a light shield 3 are spaced apart along the first direction X on the mounting surface 51, with the light shield 3 close to the lens 4; and a reflector 2 is disposed on the mounting surface 51 and at least covers the light source 1 and the light shield 3. Specifically, the circuit board 6 and the light shield 3 are arranged adjacent to each other on the heat sink 5 along the first direction X, and the light source 1 is disposed on the side of the circuit board 6 facing away from the mounting surface 51, so that the light source 1 and the light shield 3 are spaced apart along the first direction X.

[0055] In this embodiment, due to the inclusion of a heat sink 5, by placing the circuit board 6 containing the light source 1, the light shield 3, and the reflector 2 on the mounting surface 51, and connecting the lens 4 to the heat sink 5, the circuit board 6 containing the light source 1, the light shield 3, the reflector 2, and the lens 4 can be integrated with the heat sink 5 into a single unit for subsequent assembly. Furthermore, during the use of the low beam module, the light source 1 and the circuit board 6 generate heat. The heat sink 5 effectively dissipates heat, ensuring that the operating temperature of the light source 1 and the circuit board 6 remains within a safe range.

[0056] It should be noted that the specific connection method between each optical component and the heat sink 5 is not limited in the embodiments of this application, and those skilled in the art can choose according to actual needs. In one embodiment, the circuit board 6, the reflector 2, and the lens 4 are all connected to the heat sink 5 by bolts, thereby achieving reliable fixation of each optical component.

[0057] In some optional embodiments of this application, the heat sink 5 and the light shield 3 are integrally formed. Specifically, the heat sink 5 and the light shield 3 can be integrally formed using a metal die-casting process.

[0058] In this embodiment, since the heat sink 5 and the light shield 3 are integrally formed, the low beam module does not require an additional structure to support the light shield 3, thereby reducing structural components and simplifying the structure of the low beam module. Furthermore, while ensuring that the light source 1 is located at the first focal point F1 and the light shield 3 is located at the third focal point F, since both the light shield 3 and the light source 1 are located on the heat sink 5, the distance between the light shield 3 and the light source 1 can be appropriately reduced. This means the third focal point F is closer to the first focal point F1, allowing the image of the lens 4 to be closer to the reflector 2, improving the lens 4's reception of reflected light, and further enhancing the optical efficiency and luminous flux of the low beam module.

[0059] Understandably, during the manufacturing process, a suitable mold can be made based on the existing shape of the radiator 5 and the light shield 3. By injecting molten metal into the mold and cooling it, an integrally formed radiator 5 and light shield 3 can be obtained.

[0060] Furthermore, multiple partitions 52 can be provided on the side of the heat sink 5 near the lens 4, with one partition 52 located between two adjacent light sources 1 and extending towards the lens 4 to prevent interference between adjacent light sources 1. In one embodiment, the light source 1 includes a first light source 11, a second light source 12, and a third light source 13, and the first light source 11, the second light source 12, and the third light source 13 are spaced apart in a direction perpendicular to the first direction X (i.e., the extension direction of the heat sink 5). Correspondingly, two partitions 52 are provided, one partition 52 is provided between the first light source 11 and the second light source 12, and the other partition 52 is provided between the second light source 12 and the third light source 13.

[0061] In some optional embodiments of this application, such as Figures 1 to 2As shown, the reflector 2 includes a first reflector 21, a second reflector 22, and a third reflector 23 arranged sequentially; the light source 1 includes a first light source 11, a second light source 12, and a third light source 13 arranged at intervals. The first light source 11 is located at the first focal point F1 of the first reflector 21, the second light source 12 is located at the first focal point F1 of the second reflector 22, and the third light source 13 is located at the first focal point F1 of the third reflector 23; the lens 4 includes a first lens section 41, a second lens section 42, and a third lens section 43 arranged sequentially. The first lens section 41 corresponds to the position of the first light source 11, the second lens section 42 corresponds to the position of the second light source 12, and the third lens section 43 corresponds to the position of the third light source 13. The first lens section 41 is used to refract the light emitted by the first light source 11 to the front of the low beam module, the second lens section 42 is used to refract the light emitted by the second light source 12 to the side front of the low beam module, and the third lens section 43 is used to refract the light emitted by the third light source 13 to the side of the low beam module. Among them, multiple lens parts (including the first lens part 41, the second lens part 42 and the third lens part 43) can be integrally formed using transparent material through injection molding process to form an irregular freeform surface lens 4.

[0062] In this embodiment, by setting a first reflector 21, a second reflector 22, and a third reflector 23, and by placing the first light source 11 at the first focal point F1 of the first reflector 21, the second light source 12 at the first focal point F1 of the second reflector 22, and the third light source 13 at the first focal point F1 of the third reflector 23, the utilization rate of the light emitted by the first light source 11, the second light source 12, and the third light source 13 can be improved, which is beneficial to further improving the overall lighting effect of the low beam module. When the low beam module is applied to the headlights of a vehicle, by setting a first lens section 41, a second lens section 42, and a third lens section 43, and by refracting the light emitted by the corresponding light source 1 to the front, front side, and side of the low beam module respectively, all-around illumination of the low beam module can be achieved, which is beneficial to improving the lighting effect of the low beam module and the headlights. In addition, compared to circular spherical lenses, irregularly shaped freeform lenses have a smaller thickness, which can reduce the weight of lens 4, injection molding cycle and manufacturing cost, thus contributing to the lightweighting and cost reduction of the low beam module.

[0063] It should be noted that, taking the application of the low beam module to the headlights of a vehicle as an example, "directly in front" refers to the front of the vehicle, that is, the first lens 41 can refract the light emitted by the first light source 11 to the front of the vehicle, thereby achieving lane illumination; "side front" refers to the side front (left front and / or right front) of the vehicle, that is, the second lens 42 can refract the light emitted by the second light source 12 to the side front of the vehicle, thereby achieving lane illumination on both sides; "side" refers to the side (left or right side) of the vehicle, that is, the third lens 43 can refract the light emitted by the third light source 13 to the side of the vehicle, thereby achieving width illumination on both sides of the road.

[0064] It should be noted that, in order to match the three light sources 1 mentioned above, three reflectors 2 and three light-shielding plates 3 are also provided. Specifically, the reflectors 2 include a first reflector 21, a second reflector 22, and a third reflector 23, wherein the first reflector 21 corresponds to the position of the first light source 11, the second reflector 22 corresponds to the position of the second light source 12, and the third reflector 23 corresponds to the position of the third light source 13; the light-shielding plates 3 include a first light-shielding plate 31, a second light-shielding plate 32, and a third light-shielding plate 33, wherein the first light-shielding plate 31 corresponds to the position of the first light source 11, the second light-shielding plate 32 corresponds to the position of the second light source 12, and the third light-shielding plate 33 corresponds to the position of the third light source 13, thereby forming three independent optical systems to achieve illumination from different directions. It is understood that those skilled in the art can also adjust the number of light sources 1 and other optical structural components (such as reflectors 2 and light-shielding plates 3) that match the light sources 1 according to actual needs, and this is not limited here. Furthermore, the reflector 2 and the light shield 3 can be existing products. The specific structure and working principle of the reflector 2 and the light shield 3 will not be described in detail in this embodiment.

[0065] In some optional embodiments of this application, the distance between the first light source 11 and the first lens portion 41, the distance between the second light source 12 and the second lens portion 42, and the distance between the third light source 13 and the third lens portion 43 decrease sequentially. Specifically, the distance requirements between each light source and the lens portion can be met by tilting the lens 4 as a whole relative to the heat sink 5. Here, "the distance between the first light source 11 and the first lens portion 41" refers to "the distance between the light-emitting surfaces of the first light source 11 and the first lens portion 41", "the distance between the second light source 12 and the second lens portion 42" refers to "the distance between the light-emitting surfaces of the second light source 12 and the second lens portion 42", and "the distance between the third light source 13 and the third lens portion 43" refers to "the distance between the light-emitting surfaces of the third light source 13 and the third lens portion 43".

[0066] In this embodiment, because the distance between the first light source 11 and the first lens 41 is the largest (i.e., the distance between the light-emitting surfaces of the first light source 11 and the first lens 41 is greater), the image of the light source 1 after passing through the lens 4 is smaller and the energy is concentrated, thus adapting to the lighting of this lane. Because the distance between the third light source 13 and the third lens 43 is the smallest (i.e., the distance between the light-emitting surfaces of the third light source 13 and the third lens 43 is closer), the imaging range is larger, thus adapting to the lighting of both sides of the road. Because the distance between the second light source 12 and the second lens 42 is moderate (i.e., the distance between the light-emitting surfaces of the second light source 12 and the second lens 42 is moderate), it can adapt to the lighting of both lanes. In other words, by controlling the distance between each light source 1 and the lens 4, this embodiment can adapt to lighting needs in different directions, which is beneficial to further improving the overall lighting effect of the low beam module.

[0067] It should be noted that the first light source 11, the second light source 12, and the third light source 13 can be arranged in the same row or in different rows (i.e., staggered arrangement). No limitation is made here, and those skilled in the art can make adjustments according to actual needs.

[0068] In some optional embodiments of this application, the first light source 11, the second light source 12, and / or the third light source 13 include at least one single-chip light-emitting diode (i.e., a single-chip LED). Further, the first reflector 21 includes a first reflective portion, the first light source 11 includes a single-chip light-emitting diode disposed at a first focal point F1 of the first reflective portion; and / or, the second reflector 22 includes two second reflective portions, the second light source 12 includes two single-chip light-emitting diodes, and one single-chip light-emitting diode is disposed at a first focal point F1 of one of the second reflective portions; and / or, the third reflector 23 includes three third reflective portions, the third light source 13 includes three single-chip light-emitting diodes, and one single-chip light-emitting diode is disposed at a first focal point F1 of one of the third reflective portions.

[0069] In this embodiment, taking the first light source 11 as an example, since the first light source 11 uses a single-chip LED, on the one hand, compared with halogen lamps, single-chip LEDs have higher photoelectric conversion efficiency and lower heat load, thereby saving energy and reducing the burden on the heat sink 5. On the other hand, compared with multi-chip light-emitting diodes (i.e., multi-chip LEDs), single-chip LEDs generate less heat and the heat is more dispersed, thereby further reducing the burden on the heat sink 5 and improving the heat dissipation efficiency of the heat sink 5. The second light source 12 and the third light source 13 are similar and will not be described in detail here. In addition, since each single-chip LED is correspondingly disposed at the first focal point F1 of a reflective part (including the first reflective part, the second reflective part, and the third reflective part), the utilization rate of the light emitted by the single-chip LED can be improved, which is conducive to further improving the overall lighting effect of the low beam module. Furthermore, based on the principle that light sources 1 at different locations are used to achieve illumination in different directions, when the first light source 11 is equipped with a single-chip LED, it can meet the lighting needs of this lane; when the second light source 12 is equipped with two single-chip LEDs, it can meet the lighting needs of both lanes; and when the third light source 13 is equipped with three single-chip LEDs, it can meet the lighting needs of both sides of the road. That is, the low beam module of this application embodiment can achieve all-round illumination by setting six single-chip LEDs, which can reduce the manufacturing cost of the low beam module while meeting the lighting needs of the low beam module.

[0070] It should be noted that single-chip LEDs are typically cylindrical or rectangular, and the six single-chip LEDs mentioned above are spaced apart. Furthermore, each reflector (including the first, second, and third reflectors) is ellipsoidal or freeform, ensuring that the light emitted by each single-chip LED is reflected by the reflectors and converges almost without loss to the second focal point F2 of the reflector, thereby effectively improving light utilization.

[0071] In some optional embodiments of this application, such as Figure 1 As shown, the low beam module also includes a decorative ring 8 and a dimming bracket 7. The decorative ring 8 is fitted onto the lens 4 and fixedly connected to the heat sink 5. The heat sink 5 is connected to the dimming bracket 7. The dimming bracket 7 is used to fix the headlight housing or body structural components, thereby supporting and fixing the optical structural components (such as the light source 1, reflector 2, light shield 3, and lens 4, etc.), which helps to improve the positional stability of the optical structural components.

[0072] Tests have shown that, compared to existing low beam modules, the low beam module of this application embodiment has at least a 9% increase in luminous flux, at least a 5% increase in optical efficiency, an overall cost reduction of about 20%, and an overall weight reduction of about 2%, meeting the market demand for heavy-duty, safe, and high-performance low beam modules.

[0073] Combination Figures 1 to 3The following is an example of the assembly process of the low beam module according to an embodiment of this application:

[0074] First, a single-chip LED is mounted on circuit board 6; second, circuit board 6, reflector 2, and lens 4 are respectively mounted on heat sink 5 to form an optical system; third, decorative ring 8 is fitted onto lens 4 and connected to heat sink 5; finally, heat sink 5 is mounted on dimming bracket 7 to form a complete low beam module.

[0075] In summary, the low beam module provided in this application has at least the following advantages:

[0076] In this embodiment, since the light source is positioned at the first focal point of the reflector, the light emitted by the light source can be reflected by the reflector and converged as much as possible to the second focal point, thereby improving light utilization and enhancing the illumination effect of the low beam module. More importantly, since the third focal point of the lens is located between the first and second focal points of the reflector, the image of the lens is closer to the reflector, thereby improving the lens's reception of reflected light. This enhances the optical efficiency and luminous flux of the low beam module, further improving its illumination effect. In summary, this embodiment, through the rational arrangement of various optical components, not only improves light utilization and avoids glare interference, but also enhances optical efficiency and luminous flux, thereby improving the illumination effect of the low beam module.

[0077] This application also provides a vehicle headlight, including the low beam module of any of the above embodiments.

[0078] In the embodiments of this application, by adopting the above-mentioned low beam module, not only can the utilization rate of light be improved, but also the optical efficiency and luminous flux can be enhanced, thereby improving the short-range lighting effect of the vehicle headlights.

[0079] It should be noted that in this embodiment, the structure of the low beam module is the same as that of the low beam module in any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here. Furthermore, the vehicle headlight may also include a high beam module, which is used to achieve long-distance illumination. Through the cooperation of the low beam module and the high beam module, both clear near-field vision and long-distance road condition detection capability are ensured. The low beam module and the high beam module can be integrated into one unit or set separately; this is not limited here, and those skilled in the art can adjust them according to actual needs.

[0080] This application also provides a vehicle including the aforementioned vehicle lights.

[0081] In the embodiments of this application, by adopting the above-mentioned vehicle lights, not only can road lighting be optimized, thereby improving driving safety, but also driver visual fatigue can be reduced, thereby enhancing driving comfort.

[0082] It should be noted that in this embodiment, the structure of the vehicle lamp is the same as that of any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here.

[0083] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0084] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0085] In this application, the term "and / or" 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0086] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A low beam module, characterized in that, It includes a light source (1), a reflector (2), and a lens (4); The reflector (2) has a first focal point (F1) and a second focal point (F2), and the lens (4) has a third focal point (F), wherein the third focal point (F) is located between the first focal point (F1) and the second focal point (F2); The light source (1) is located at the first focal point (F1).

2. The low beam module according to claim 1, characterized in that, The low beam module further includes a light shield (3), which is disposed at the third focal point (F).

3. The low beam module according to claim 1, characterized in that, The low beam module further includes a light shield (3), which is disposed between the third focal point (F) and the second focal point (F2).

4. The low beam module according to claim 1, characterized in that, The distance between the first focal point (F1) and the third focal point (F) is less than the distance between the second focal point (F2) and the third focal point (F).

5. The low beam module according to claim 2 or 3, characterized in that, The low beam module further includes a heat sink (5), wherein the heat sink (5) and the lens (4) are arranged sequentially along a first direction (X) and connected to each other, and the heat sink (5) includes a mounting surface (51) intersecting the first direction (X); The light source (1) and the light shield (3) are spaced apart on the mounting surface (51) along the first direction (X), and the light shield (3) is close to the lens (4); The reflector (2) is disposed on the mounting surface (51) and at least covers the light source (1) and the light shield (3).

6. The low beam module according to any one of claims 1-4, characterized in that, The reflector (2) includes a first reflector (21), a second reflector (22), and a third reflector (23) arranged sequentially; The light source (1) includes a first light source (11), a second light source (12), and a third light source (13) arranged at intervals. The first light source (11) is located at the first focal point (F1) of the first reflector (21), the second light source (12) is located at the first focal point (F1) of the second reflector (22), and the third light source (13) is located at the first focal point (F1) of the third reflector (23). The lens (4) includes a first lens section (41), a second lens section (42), and a third lens section (43) arranged sequentially. The first lens section (41) corresponds to the position of the first light source (11), the second lens section (42) corresponds to the position of the second light source (12), and the third lens section (43) corresponds to the position of the third light source (13). The first lens section (41) is used to refract the light emitted by the first light source (11) to the front of the low beam module, the second lens section (42) is used to refract the light emitted by the second light source (12) to the side front of the low beam module, and the third lens section (43) is used to refract the light emitted by the third light source (13) to the side of the low beam module.

7. The low beam module according to claim 6, characterized in that, The distance between the first light source (11) and the first lens portion (41), the distance between the second light source (12) and the second lens portion (42), and the distance between the third light source (13) and the third lens portion (43) decrease sequentially.

8. The low beam module according to claim 6, characterized in that, The first reflector (21) includes a first reflective part, and the first light source (11) includes a single-chip light-emitting diode, which is disposed at the first focal point (F1) of the first reflective part; And / or, the second reflector (22) includes two second reflective portions, and the second light source (12) includes two single-chip light-emitting diodes, one of which is disposed at the first focal point (F1) of one of the second reflective portions; And / or, the third reflector (23) includes three third reflective parts, and the third light source (13) includes three single-chip light-emitting diodes, one of which is disposed at the first focal point (F1) of one of the third reflective parts.

9. A vehicle light, characterized in that, Includes the low beam module as described in any one of claims 1-8.

10. A vehicle, characterized in that, Including the vehicle lights as described in claim 9.

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