A low beam lens, a low beam module, and a vehicle
By integrating the focusing and shading functions through an integrated total internal reflection low beam lens, the problem of complex structure and regulatory compliance of LED modules in the replacement of halogen lamps is solved, achieving simplified installation and high-efficiency optical performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU ETHER AUTOMOTIVE LIGHTING LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-05-26
AI Technical Summary
Existing LED modules have many components, are complex to install, and are difficult to meet regulatory requirements when replacing halogen lamps, especially the matching problem of the optical system.
Design an integrated total internal reflection low beam lens that integrates focusing, shading and cutoff line forming functions. It is made of PC or PMMA material by one-piece injection molding, adapted to LED lamp beads, forming an independent optical system, simplifying the structure and complying with regulatory requirements.
It achieves a simplified structure for LED modules, efficiently utilizes the directional light-emitting characteristics of LEDs, reduces light loss, ensures accurate cutoff lines between light and dark areas, complies with regulatory requirements, is easy to install, and reduces costs and complexity.
Smart Images
Figure CN224284296U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive lighting technology, specifically relating to a low beam lens, a low beam module, and a vehicle. Background Technology
[0002] Currently, most automotive low beam headlights use halogen lamps. Halogen lamps are tungsten lamps filled with halogen elements or halides such as bromine and iodine. They have advantages such as good optical compatibility, a cutoff line generation mechanism, high thermal stability, and standardized interfaces. Existing halogen lamps mainly consist of a lens, a light shield, an elliptical reflector, and a filament. The light shield is located at the focal point of the lens, and the filament is located inside the elliptical reflector. The light-emitting surface size of the lens is generally 60mm*60mm. The 360° spherical light emission characteristics of the halogen filament match the focusing requirements of the elliptical reflector, and the filament size can be approximated as a point light source, ensuring that the light forms a precise light path after reflection by the reflector. By using the light shield to physically block the light from the lower half of the filament, in conjunction with the lens, a compliant cutoff line can be formed. They remain stable even at high operating temperatures, requiring no additional heat dissipation structure. H4 and H7 interface standards are globally universal, resulting in low cost per lamp.
[0003] Despite its advantages, which led to its early adoption as the mainstream light source for automotive low beams, halogen lamps still had several drawbacks, such as low luminous flux, high energy consumption, short lifespan, and numerous components. With technological advancements, LEDs emerged. LEDs are a highly efficient and energy-saving light source with advantages such as low energy consumption, long lifespan, and high luminous efficacy. The luminous efficiency of LED lamps is far superior to that of halogen lamps, with an effective lifespan of 30,000 to 50,000 hours, significantly exceeding the lifespan of halogen lamps. As a result, more and more automobiles are using LED lights as their core lighting component. Therefore, there is a growing demand from owners of vehicles equipped with halogen lamps to replace them with LED lights.
[0004] However, there are inherent contradictions between the optical systems of LED and halogen lamps, mainly including the following aspects: 1. The directional light emission characteristics and surface light source size of LED lamps cause nearly half of the original vehicle's reflector to be ineffectively reflected, resulting in diffused light spots; 2. The light shield originally designed for specific positions of the halogen filament is distorted due to the increased thickness of the LED's COB package and the shift in the light emission center, causing cutoff line distortion and upward scattering glare, directly violating the rigid constraints of regulations on cutoff line accuracy and glare intensity; 3. The necessary heat dissipation module for LED lamps doubles their size, forcing a higher mounting position after compressing the lamp cavity space, further deviating from the optical focus. Based on the above contradictions, simply replacing the LED lamps is insufficient to meet current regulations for low beam headlights. Therefore, it is necessary to disassemble the corresponding components of the original vehicle's low beam headlights, such as the reflector, and replace them with a set of optical system components that match the LED lamps. Existing LED modules include LED chips, lenses, light shields, heat sinks, brackets, and other components, which are numerous and cumbersome to replace. Therefore, how to replace the original vehicle's halogen lamps with a simpler LED module while still meeting regulatory requirements is a pressing issue that needs to be addressed. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide a low beam lens to solve the technical problem that existing LED modules have many components, making installation complicated when replacing the original vehicle halogen lamps and making it difficult to meet the regulatory requirements for low beam lamps; the purpose of this utility model is also to provide a low beam module that can easily replace the original vehicle halogen lamps and meet the regulatory requirements for low beam lamps; the purpose of this utility model is also to provide a vehicle using the above-mentioned low beam module.
[0006] To solve the above problems, the present invention provides a low-beam lens with the following technical solution:
[0007] A low-beam lens is a total internal reflection lens with an integral structure. It has a focusing structure that corresponds to LED beads and a light cut-off line forming surface located below the focusing structure. The low-beam lens has a light-shielding part below the light cut-off line forming surface. A light-emitting area is formed in the area above the light-shielding part inside the low-beam lens. A light-emitting convex surface is formed on the end face of the low-beam lens away from the focusing structure.
[0008] The beneficial effects of this utility model's low beam lens are as follows: The low beam lens of this utility model is an integrated structure, which integrates the functions of the focusing component, light shield, and lens in a traditional LED module. This solves the problem of numerous components and complex installation in existing LED modules, simplifies the structure of the LED module, and reduces its size. The low beam lens is a total internal reflection lens, which can efficiently utilize the directional light emission characteristics of LEDs and reduce light loss. The cut-off line forming surface cooperates with the light shield, replacing the function of the original vehicle's light shield and ensuring compliance with regulations regarding cut-off line accuracy and glare intensity. The low beam lens of this utility model can form an independent and complete optical system itself. Replacement only requires removing the original vehicle's halogen bulb; there is no need to disassemble the original vehicle's reflector and light shield, making installation very convenient. Furthermore, it can provide illumination without relying on the original vehicle's reflector and light shield during operation.
[0009] Furthermore, the light-concentrating structure is a total reflection light-concentrating cup.
[0010] Beneficial effects: The total internal reflection condenser cup utilizes the principle of total internal reflection to reduce light loss and precisely focuses light according to the directional light emission characteristics of LEDs, solving the problem of low light reflection efficiency of traditional reflectors, reducing the loss of light source energy efficiency and improving luminous efficiency; in addition, the structural design of the condenser cup can specifically constrain the light distribution of the LED surface light source, avoiding light spot dispersion and making the light more concentrated to meet the lighting intensity requirements of low beam lamps; furthermore, the condenser cup design does not require a long light path, which can reduce the length of the low beam lens and thus reduce the volume of the low beam lens.
[0011] Furthermore, the light-focusing structure has three parts, each with a groove. The inner wall of each groove is curved, and the opening of each groove faces the corresponding LED bead. Each groove has a convex structure that convexes towards the corresponding LED bead. The light-incident end of the low-beam lens is defined as its front end, and the light-outceasing end of the low-beam lens is defined as its rear end. The three light-focusing structures are the left light-focusing structure, the right light-focusing structure, and the middle light-focusing structure. The left and right light-focusing structures are symmetrically distributed about the middle light-focusing structure.
[0012] Beneficial effects: The three focusing structures can correspond to three LED beads, expanding the lighting coverage. The symmetrical design of the focusing structures ensures uniform lighting on both sides, avoiding insufficient or excessive brightness on one side. The curved inner wall of the groove and the internal convex structure can optimize the light refraction and reflection path, making the light more focused and reducing light dispersion.
[0013] Furthermore, the light and dark cutoff line forming surface includes a first forming surface, a second forming surface, and a forming inclined surface connecting the first forming surface and the second forming surface. The height of the first forming surface is higher than the height of the second forming surface. The first forming surface, the second forming surface, and the forming inclined surface all extend from the position of the light-shielding part to the end of the light-concentrating structure. The focal point of the near-light lens is at the intersection of the first forming surface and the forming inclined surface.
[0014] Beneficial effects: The height difference between the first and second forming surfaces, combined with the inclined surface, forms a stepped structure with one side higher than the other, which can create a light-dark cutoff line that complies with regulations; the focal point is located at the intersection of the first forming surface and the forming inclined surface, ensuring that the light transitions precisely at the light-dark cutoff line, avoiding upward scattering of light to form glare, and meeting the regulatory constraints on glare intensity.
[0015] Furthermore, the light-shielding part is curved.
[0016] Beneficial effect: Keeps the image of the low beam lens straight and avoids image warping.
[0017] Furthermore, the projected area of the light-emitting convex surface in the front-to-back direction is 20mm*20mm.
[0018] Beneficial effects: Compared with traditional halogen lamps, the size of the light-emitting convex surface is greatly reduced, which greatly reduces the volume of the entire low beam lens. The small-sized light-emitting convex surface, combined with the total internal reflection structure, can precisely control the light emission angle and range. Under the same light flux, the lighting effect of traditional large-sized halogen lamps can be achieved.
[0019] Furthermore, the low beam lens is integrally injection molded from PC or PMMA material.
[0020] Beneficial effects: One-piece injection molding ensures the integrity of the low-beam lens structure, reduces errors in the assembly of multiple components in traditional LED modules, improves optical accuracy, and reduces production complexity and cost, making it suitable for mass production. Furthermore, the good light transmittance, high temperature resistance, and impact resistance of PC and PMMA materials ensure stable optical performance of the low-beam lens during long-term use.
[0021] The technical solution for a low beam module provided by this utility model is as follows:
[0022] A low beam module includes a chuck, multiple LED beads, a circuit board, a heat sink, and a low beam lens assembled together. The low beam lens is a total internal reflection lens and has an integral structure. It has a focusing structure corresponding to each LED bead and a light cut-off line forming surface located below the focusing structure. The low beam lens has a light-shielding part below the light cut-off line forming surface. A light-emitting area is formed in the area above the light-shielding part inside the low beam lens. A light-emitting convex surface is formed on the end face of the low beam lens away from the focusing structure.
[0023] The beneficial effects of this utility model's low beam module are as follows: The low beam module integrates efficient light focusing, precise light control, and heat dissipation functions. The low beam lens in the low beam module is an integrated structure, which integrates the functions of the light focusing component, light shield, and lens in a traditional LED module, forming a complete optical system itself. This results in a smaller number of components in the low beam module of this utility model, with only the low beam lens as the optical component. The overall structure is simple, highly reliable, and has a long service life. When retrofitting halogen lamps, it can be installed without damage. Only the original halogen bulb needs to be removed without removing other optical components to install the low beam module of this utility model. The low beam lens is a total internal reflection lens, which allows the low beam module of this utility model to efficiently utilize the directional light emission characteristics of LEDs, reduce light loss, and ensure that the emitted light spot has a clear cutoff line, meeting the regulatory requirements for cutoff line accuracy and glare intensity.
[0024] Furthermore, the light-concentrating structure is a total reflection light-concentrating cup.
[0025] Beneficial effects: The total internal reflection condenser cup utilizes the principle of total internal reflection to reduce light loss and precisely focuses light according to the directional light emission characteristics of LEDs, solving the problem of low light reflection efficiency of traditional reflectors, reducing the loss of light source energy efficiency and improving luminous efficiency; in addition, the structural design of the condenser cup can specifically constrain the light distribution of the LED surface light source, avoiding light spot dispersion and making the light more concentrated to meet the lighting intensity requirements of low beam lamps; furthermore, the condenser cup design does not require a long light path, which can reduce the length of the low beam lens and thus reduce the volume of the low beam lens.
[0026] Furthermore, the light-focusing structure has three parts, each with a groove. The inner wall of each groove is curved, and the opening of each groove faces the corresponding LED bead. Each groove has a convex structure that convexes towards the corresponding LED bead. The light-incident end of the low-beam lens is defined as its front end, and the light-outceasing end of the low-beam lens is defined as its rear end. The three light-focusing structures are the left light-focusing structure, the right light-focusing structure, and the middle light-focusing structure. The left and right light-focusing structures are symmetrically distributed about the middle light-focusing structure.
[0027] Beneficial effects: The three focusing structures can correspond to three LED beads, expanding the lighting coverage. The symmetrical design of the focusing structures ensures uniform lighting on both sides, avoiding insufficient or excessive brightness on one side. The curved inner wall of the groove and the internal convex structure can optimize the light refraction and reflection path, making the light more focused and reducing light dispersion.
[0028] Furthermore, the light and dark cutoff line forming surface includes a first forming surface, a second forming surface, and a forming inclined surface connecting the first forming surface and the second forming surface. The height of the first forming surface is higher than the height of the second forming surface. The first forming surface, the second forming surface, and the forming inclined surface all extend from the position of the light-shielding part to the end of the light-concentrating structure. The focal point of the near-light lens is at the intersection of the first forming surface and the forming inclined surface.
[0029] Beneficial effects: The height difference between the first and second forming surfaces, combined with the inclined surface, forms a stepped structure with one side higher than the other, which can create a light-dark cutoff line that complies with regulations; the focal point is located at the intersection of the first forming surface and the forming inclined surface, ensuring that the light transitions precisely at the light-dark cutoff line, avoiding upward scattering of light to form glare, and meeting the regulatory constraints on glare intensity.
[0030] Furthermore, the light-shielding part is curved.
[0031] Beneficial effect: Keeps the image of the low beam lens straight and avoids image warping.
[0032] Furthermore, the projected area of the light-emitting convex surface in the front-to-back direction is 20mm*20mm.
[0033] Beneficial effects: Compared with traditional halogen lamps, the size of the light-emitting convex surface is greatly reduced, which greatly reduces the volume of the entire low beam lens. The small-sized light-emitting convex surface, combined with the total internal reflection structure, can precisely control the light emission angle and range. Under the same light flux, the lighting effect of traditional large-sized halogen lamps can be achieved.
[0034] Furthermore, the low beam lens is integrally injection molded from PC or PMMA material.
[0035] Beneficial effects: One-piece injection molding ensures the integrity of the low-beam lens structure, reduces errors in the assembly of multiple components in traditional LED modules, improves optical accuracy, and reduces production complexity and cost, making it suitable for mass production. Furthermore, the good light transmittance, high temperature resistance, and impact resistance of PC and PMMA materials ensure stable optical performance of the low-beam lens during long-term use.
[0036] Furthermore, the chuck is one of an H7 chuck, an H4 chuck, an HB3 chuck, or a turn signal bulb holder, and the distance between the chuck and the light-emitting convex surface of the low beam lens is equal to the length of the bulb to be replaced.
[0037] Beneficial effects: H7, H4, and HB3 chucks or turn signal bulb holders are globally recognized halogen lamp interface standards, ensuring that the low beam module can be directly adapted to the corresponding lamp holder of the original vehicle without additional interface modification; the distance between the chuck and the light-emitting convex surface of the low beam lens matches the bulb length, ensuring that the installation position of the low beam module is consistent with the optical focus of the original vehicle halogen lamp, avoiding light path deviation and light pattern distortion caused by installation position misalignment, and further improving compliance after replacement.
[0038] The technical solution for a vehicle provided by this utility model is:
[0039] A vehicle includes a vehicle body, on which a low beam module is installed. The structure of the low beam module is the same as that in the above-mentioned technical solution for low beam modules, and will not be described in detail here.
[0040] The beneficial effects of this utility model on vehicles are: the vehicles can obtain the advantages of low energy consumption, long life and high luminous efficiency of LEDs, while the lighting pattern complies with regulations, reducing the risk of glare and improving driving safety; it is compatible with the original vehicle halogen lamp installation structure, suitable for upgrading various models equipped with H7 and other standard interface halogen lamps, and has a wide range of applications. Attached Figure Description
[0041] Figure 1 This is a three-dimensional structural diagram of the low-beam lens of this utility model. Figure 1 ;
[0042] Figure 2 This is a three-dimensional structural diagram of the low-beam lens of this utility model. Figure 2 ;
[0043] Figure 3 for Figure 1 The main view;
[0044] Figure 4 for Figure 1 Side view;
[0045] Figure 5 for Figure 1 A bottom view;
[0046] Figure 6 This is a three-dimensional structural diagram of the low beam module of this utility model;
[0047] Figure 7 for Figure 6 A schematic diagram of the decomposition process;
[0048] Figure 8 This is a schematic diagram of the optical path when the LED beads in the low beam module emit light;
[0049] Figure 9 A light spot pattern with bright and dark cutoff lines formed when an LED light chip emits light and passes through a low beam lens;
[0050] Figure 10 This is a light pattern formed by an LED chip after it passes through a low-beam lens when it emits light.
[0051] Figure 11 This is a light path diagram showing the light from an LED light bead passing through a focusing structure when it emits light.
[0052] Explanation of reference numerals in the attached figures:
[0053] 1. Low beam lens; 11. Condensing structure; 111. Groove; 112. Convex structure; 12. First forming surface; 13. Second forming surface; 14. Forming slope; 15. Light-shielding part; 16. Light-emitting convex surface;
[0054] 2. Heat sink; 3. LED beads; 4. Circuit board; 5. Screws; 6. Chuck; 7. Mounting bracket. Detailed Implementation
[0055] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0056] An embodiment of a low-beam lens provided by this utility model:
[0057] like Figure 1 and Figure 2 As shown, the low-beam lens 1 is a total reflection lens, which has a light-concentrating structure 11, a light-dark cutoff line forming surface, a light-shielding part 15, and a light-emitting convex surface 16.
[0058] Specifically, the low beam lens 1 is integrally injection molded from PC material, forming a one-piece structure. PC is short for polycarbonate, a high-performance engineering plastic with properties such as high strength, high transparency, impact resistance, and heat resistance. Of course, in other embodiments, the low beam lens 1 can also be integrally injection molded from PMMA material.
[0059] In this embodiment, for ease of description, the light-incident end of the low-light lens 1 is defined as its front end, and the light-outceasing end of the low-light lens 1 is defined as its rear end.
[0060] like Figure 3 , Figure 5 and Figure 8 As shown, three focusing structures 11 are located at the front end of the low-beam lens 1 and are arranged side by side. Each of the three focusing structures 11 corresponds one-to-one with an LED bead 3 during installation. The three focusing structures 11 are the left focusing structure, the right focusing structure, and the middle focusing structure, with the left and right focusing structures symmetrically distributed about the middle focusing structure. Figure 4As shown, each focusing structure 11 is a total reflection focusing cup, and the total reflection focusing cup is provided with a groove 111. The inner wall surface of each groove 111 is curved, and the opening of each groove 111 is used to face the corresponding LED bead 3. Each groove 111 is provided with a convex surface structure 112 protruding towards the corresponding LED bead 3. Figure 11 and Figure 8 As shown, some of the light emitted by the LED bead 3 is directed towards the inner wall of the groove 111, and after refraction, it is directed towards the outer wall of the focusing structure 11. Since the low-light lens 1 is a total internal reflection lens, this portion of the light will not exit from the outer wall of the focusing structure 11, but will be reflected on the inner side of the outer wall. The reflected light then travels towards the focal point. Figure 8 As shown, another portion of the light emitted by the LED bead 3 is directed towards the convex structure 112, where it is refracted. The refracted or reflected light then travels in a regular pattern towards the focal point, achieving light convergence and reducing light loss. Both the inner wall surface and the convex structure 112 are mathematically modeled using Snell's law for total internal reflection, and the control points of the surface contour are calculated using a mathematical iteration method.
[0061] The light-dark cutoff line forming surface has a region located below the light-concentrating structure 11, such as... Figure 3 and Figure 5 As shown, the light-dark cutoff line forming surface includes a first forming surface 12, a second forming surface 13, and a forming inclined surface 14 connecting the first forming surface 12 and the second forming surface 13. The height of the first forming surface 12 is higher than the height of the second forming surface 13. The first forming surface 12, the second forming surface 13, and the forming inclined surface 14 all extend from the position of the light-shielding part 15 to the end of the light-concentrating structure 11. The focal point of the near-light lens 1 is at the intersection of the first forming surface 12 and the second forming surface 13.
[0062] like Figure 3 As shown, the light-shielding part 15 is located below the light-dark cutoff line forming surface and is a certain distance from the light-concentrating structure 11 in the front-back direction. In this embodiment, the light-shielding part 15 is an arc surface. The light-emitting area is inside the lens and located above the light-shielding part 15. The end face of the low-beam lens 1 away from the light-concentrating structure 11 forms a light-emitting convex surface 16, and the projected area of the light-emitting convex surface 16 in the front-back direction is 20mm*20mm. The light gathered by the light-concentrating structure 11 will be emitted from the light-emitting area to the rear and finally emitted from the light-emitting convex surface 16. The emitted area can form a light-dark cutoff line that complies with regulations, such as... Figure 9 and Figure 10 As shown.
[0063] The low-beam lens 1 of this invention adopts a total internal reflection form, integrating functions such as light focusing, cutoff line shaping, and light blocking into a single lens. It replaces the light-focusing component, light-shielding plate, and lens in traditional LED modules, reducing the number of components, simplifying the overall structure, and making assembly easier. The low-beam lens 1 of this invention has a light-emitting diameter of only 20mm*20mm, a small overall size, and achieves the effect of a traditional 60mm*60mm lens under the same light flux; its optical performance remains stable during long-term use.
[0064] It should be noted that the light-concentrating structure 11 is not limited to the three in this embodiment. It can be reasonably designed and selected according to the corresponding vehicle model and actual lighting needs, provided that national regulations are met.
[0065] Furthermore, the projected area of the light-emitting convex surface 16 in the front-rear direction is not limited to 20mm*20mm, as long as it can meet the lighting effect of the original halogen headlights and comply with national regulations. Moreover, the projected shape of the light-emitting convex surface 16 in the front-rear direction is not limited to a square; it can also be a circle or other shapes, such as a parallelogram.
[0066] An embodiment of the low beam module provided by this utility model:
[0067] like Figure 6 and Figure 7 As shown, the low beam module includes a chuck 6, multiple LED beads 3, a circuit board 4, a heat sink, and a low beam lens 1 assembled together.
[0068] In this assembly, multiple LED beads 3 are directly soldered onto a circuit board 4, which is then fixed to the heat sink by screws 5. The heat sink has multiple heat sinks 2, which transfer the heat generated by the LED beads 3 during illumination to the external environment, ensuring the safe operation of both the LED beads 3 and the circuit board 4. The focusing structure 11 of the low beam lens 1 extends into the heat sink and corresponds one-to-one with each LED bead 3. A mounting base 7 surrounds the low beam lens 1, and the mounting base 7 is clamped to the heat sink by a chuck 6, thus assembling the entire low beam module. The chuck 6 is an H7 chuck 6, ensuring that the low beam module can directly adapt to the original vehicle's H7 lamp holder without requiring additional interface modifications. The structure of the low beam lens 1 in the low beam module is the same as in the embodiment described above, and will not be described in detail here.
[0069] After assembly, the distance between the chuck 6 and the light-emitting convex surface 16 of the low beam lens 1 is equal to the length of the H7 bulb to be replaced, ensuring that the installation position of the low beam module is consistent with the optical focus of the original halogen lamp, and avoiding problems such as light path deviation and light pattern distortion caused by installation position offset.
[0070] This invention's low beam module integrates a chuck 6, LED beads, a circuit board 4, a heat sink, and a low beam lens 1 with integrated functions. The optical components consist of only the low beam lens 1, which meets the national regulations for automotive low beam headlights, with a light source input of 1200µm. The entire optomechanical principle requires only two components: the LED beads 3 and the low beam lens 1. The optical mechanism is simple, reliable, and highly consistent. According to actual test results, luminous efficacy is improved by more than 50%. Furthermore, this invention's low beam module is small in size, with a light-emitting diameter of only 20mm*20mm. Under the same light source luminous flux, it can achieve the same light emission effect as a traditional 60mm*60mm halogen lamp. This invention's low beam module combines the low energy consumption and long lifespan characteristics of the LED beads 3 with heat sinks to ensure heat dissipation, and uses an integrated injection-molded low beam lens 1 to ensure stable optical performance during long-term use, balancing efficient lighting and durability.
[0071] When installing the low beam module of this utility model, only the original halogen bulbs of the vehicle need to be removed. There is no need to remove the original vehicle's reflector bowl, sunshade and other optical components. It can be directly inserted for fixation. Moreover, as an independent optical system, it can emit light patterns that meet the regulatory requirements without relying on the original vehicle's reflector bowl, sunshade and other optical components.
[0072] It should be noted that the aforementioned chuck 6 is not limited to the H7 chuck. In actual use, it can also be an H4 chuck, HB3 chuck, or turn signal bulb holder, mounted on an adjustment bracket or housing. Correspondingly, after installation, the distance between the chuck 6 and the light-emitting convex surface of the low beam lens 1 is consistent with the length of the bulb mounted on the corresponding type of chuck. With the help of the chuck 6, the original vehicle bulb can be replaced without damage, but it is not limited to this; it is also applicable to newly developed or newly designed headlights, making future LED headlight source replacement possible.
[0073] The projected area of the light-emitting convex surface 16 in the front-rear direction is not limited to 20mm*20mm, as long as it can meet the lighting effect of the original halogen headlights and the requirements of national regulations. Furthermore, the projected shape of the light-emitting convex surface 16 in the front-rear direction is not limited to a square, but can also be a circle or other shapes, such as a parallelogram.
[0074] Embodiments of the vehicle provided by this utility model:
[0075] The vehicle includes a vehicle body, on which a low beam module is installed. The structure of the low beam module is the same as that in the embodiments of the low beam module described above, and will not be described in detail here.
[0076] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.
[0077] In the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.
[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A low-light lens, characterized in that, It is a total reflection lens with an integrated structure. It has a focusing structure that corresponds to the LED beads one by one, and a light cut-off line forming surface located below the focusing structure. The low beam lens has a light-shielding part below the light cut-off line forming surface. The area above the light-shielding part inside the low beam lens forms a light-emitting area. The end face of the low beam lens away from the focusing structure forms a light-emitting convex surface.
2. A near-beam lens according to claim 1, characterized in that, The light-concentrating structure is a total reflection light-concentrating cup.
3. A low-beam lens according to claim 2, characterized in that, The light-focusing structure has three parts, each with a groove. The inner wall of each groove is curved, and the opening of each groove faces the corresponding LED. Each groove also has a convex structure that convexes towards the corresponding LED. The light-incident end of the low-beam lens is defined as its front end, and the light-outceasing end of the low-beam lens is defined as its rear end. The three light-focusing structures are the left light-focusing structure, the right light-focusing structure, and the middle light-focusing structure. The left and right light-focusing structures are symmetrically distributed about the middle light-focusing structure.
4. A low-beam lens according to claim 1, characterized in that, The light and dark cutoff line forming surface includes a first forming surface, a second forming surface, and a forming inclined surface connecting the first forming surface and the second forming surface. The height of the first forming surface is higher than the height of the second forming surface. The first forming surface, the second forming surface, and the forming inclined surface all extend from the position of the light-shielding part to the end of the light-concentrating structure. The focal point of the near-light lens is at the intersection of the first forming surface and the second forming surface.
5. A low-beam lens according to any one of claims 1-4, characterized in that, The light-shielding part is curved.
6. A low-beam lens according to any one of claims 1-4, characterized in that, The projected area of the light-emitting convex surface in the front-to-back direction is 20mm*20mm.
7. A low-beam lens according to any one of claims 1-4, characterized in that, The low beam lens is made of PC or PMMA material through one-piece injection molding.
8. A low beam module, characterized in that, It includes a chuck, multiple LED beads, a circuit board, a heat sink, and a low beam lens assembled together, wherein the low beam lens is a low beam lens as described in any one of claims 1-7.
9. A low beam module according to claim 8, characterized in that, The chuck is one of H7 chuck, H4 chuck, HB3 chuck or turn signal bulb holder, and the distance between the chuck and the light-emitting convex surface of the low beam lens is equal to the length of the bulb to be replaced.
10. A vehicle, comprising a vehicle body, characterized in that, The vehicle body is equipped with a low beam module as described in claim 8 or 9.