Beam splitter bracket, optical unit and high and low beam module thereof

Abstract

A high and low beam module comprises a lens, a lens support and an optical unit, the lens is arranged at the front end of the lens support and fixed to the optical unit through the lens support, the optical unit comprises a radiator, an LED circuit board, a condenser, a beam splitter and a beam splitter support, and the beam splitter is arranged on the beam splitter support. The LED circuit board and the condenser are respectively fixed on the radiator through the beam splitter bracket; the light splitting piece support is provided with a supporting table, a first abutting pressing foot, a second abutting pressing foot and a fixing hole, the supporting table is used for installing the light splitting piece, the first abutting pressing foot is used for fixing the LED circuit board to the radiator, the second abutting pressing foot is used for fixing the condenser to the radiator, and the fixing hole is used for fixing the light splitting piece support to the radiator; according to the utility model, the beam splitter, the condenser and the LED circuit board are simultaneously fixed on the radiator through the beam splitter bracket, so that the accuracy problem caused by multiple installation of a plurality of parts is avoided, and the problems in the prior art can be effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile lamps, and in particular relates to a beam splitter bracket, an optical unit and a high and low beam module thereof. Background Art

[0002] Existing automotive lights mostly use halogen or xenon bulbs as their light source. These drawbacks include high energy consumption, high heat generation, and high material requirements for surrounding components. Xenon lamp components are bulky, making them difficult to deploy and failing to meet national energy conservation and environmental protection requirements. Furthermore, the bulbs light up slowly and have a short lifespan. Halogen bulbs, in particular, produce dim light after lighting, which can easily cause visual fatigue during nighttime driving. With the rapid development of LED light source technology, traditional halogen and xenon lamps are gradually being replaced on the market. Consequently, low-beam, high-beam, and high-low beam modules using LEDs have emerged.

[0003] Chinese patent publication number CN107131462A discloses an LED-assisted high and low beam projection module. The module structure includes a heat sink, an LED circuit board, a concentrator, a module adjustment bracket, a light pattern baffle, a lens bracket, and a lens. The lens is mounted on the front side of the lens bracket, and a light pattern baffle is provided inside the lens bracket. In this structure, the light pattern baffle is mounted inside the lens bracket, and the lens bracket is fixed to the module adjustment bracket by screws. The LED circuit board and the concentrator are mounted on the heat sink, and the heat sink is fixed to the module adjustment bracket by screws. It can be seen that the concentrator is fixed to the module adjustment bracket by the heat sink, and the light pattern baffle is fixed to the module adjustment bracket by the lens bracket, so that the light pattern baffle is located in front of the concentrator. This installation method is more common in high and low beam projection modules. After such installation, it is difficult to ensure the accuracy of the relative position between the light pattern baffle and the concentrator. Therefore, problems such as blurred low beam cutoff line, colorful colors, and inaccurate glare point blocking are prone to occur, thereby affecting the quality of the low beam light pattern.

[0004] In addition, the modules of this structure need to be assembled into modules before problems such as blurred low beam cutoff line, colorful colors, and inaccurate glare point blocking can be checked. Once problems such as blurred low beam cutoff line are found, the module needs to be disassembled for maintenance and adjustment, which is very inconvenient. Furthermore, since the light pattern baffle is built into the lens bracket, the position of the light pattern baffle directly makes maintenance and adjustment very inconvenient. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a beam splitter bracket, an optical unit and a high and low beam module thereof. The beam splitter bracket is set to fix the beam splitter, concentrator and LED circuit board on the radiator at the same time, avoiding the precision problems caused by multiple installations of multiple parts, thereby improving the accuracy of the relative position between the beam splitter and the concentrator, and making the installation easier, which can effectively solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a beam splitter bracket, a concentrator mounting hole is provided in the middle of the beam splitter bracket, mounting platforms are provided around the concentrator mounting hole, the concentrator mounting hole is used for the front end of the concentrator to pass through, the mounting platform is symmetrically provided with forward-extending support platforms on the left and right sides of the middle of the concentrator mounting hole, and the support platforms are used to install the beam splitter; the mounting platform is also provided with a first interference pressure foot, a second interference pressure foot and a fixing hole, the first interference pressure foot is used to fix the LED circuit board on the radiator, the second interference pressure foot is used to fix the concentrator on the radiator, and the fixing hole is used to fix the beam splitter bracket on the radiator.

[0007] As a spectrometer bracket of the present invention, the spectrometer and the support platform are limited by a first limiting structure, and the first limiting structure includes a first limiting column and a first limiting hole. The first limiting column is inserted into the first limiting hole, so that the spectrometer is limited on the spectrometer bracket, and then the limited spectrometer is fixed to the spectrometer bracket using screws.

[0008] As the beam splitter bracket of the present invention, the beam splitter bracket is made of high-temperature PC, and the mounting platform is further provided with a forward-extending connecting platform at the bottom of the concentrator mounting hole, and the connecting platform is used to connect the two supporting platforms to form a U-shaped structure.

[0009] An optical unit includes a heat sink, an LED circuit board, a concentrator, a beam splitter, and the above-mentioned beam splitter bracket, wherein the beam splitter is provided with a glare point shading structure, the beam splitter is arranged on the beam splitter bracket, and the LED circuit board and the concentrator are respectively fixed to the heat sink via the beam splitter bracket, so that the concentrator is located between the LED circuit board and the beam splitter, and the front end of the concentrator passes through the concentrator mounting hole.

[0010] As an optical unit of the present invention, the concentrator and the radiator are limited by a second limiting structure, the second limiting structure includes a second limiting column, a limiting groove and an avoidance hole, the avoidance hole is arranged on the LED circuit board, the second limiting column is arranged on the concentrator, the limiting groove is arranged on the radiator, the second limiting column passes through the avoidance hole and cooperates with the limiting groove, thereby limiting the concentrator on the radiator; the LED circuit board, the spectrometer bracket and the radiator are limited by a third limiting structure, the third limiting structure includes a third limiting column and a third limiting hole, the spectrometer bracket is provided with the third limiting column, the LED circuit board and the radiator are respectively provided with the third limiting holes, the third limiting column passes through the third limiting hole on the LED circuit board and the third limiting hole on the radiator in sequence, thereby limiting the LED circuit board and the spectrometer bracket to the radiator at the same time.

[0011] As an optical unit of the present invention, the concentrator is provided with support mounting feet of an integral structure on the left and right sides, and a pressure strip is provided on the surface of the support mounting foot facing the beam splitter bracket, and the pressure strip is used to contact the second interfering pressure foot on the beam splitter bracket, and a support boss is provided on the surface of the support mounting foot facing the radiator, and the support boss is used to contact the radiator.

[0012] As an optical unit of the present invention, two rows of horizontally distributed LED light sources are provided on the LED circuit board, the upper row of LED light sources consists of seven first LEDs, and the lower row of LED light sources consists of five second LEDs; the concentrator consists of an upper and lower part, the upper part is a low beam concentrating structure, and the lower part is a high beam concentrating structure, the rear end of the low beam concentrating structure is provided with seven concentrating bowls, the middle of the concentrating bowl is provided with a concentrating hole, one of the concentrating holes corresponds to one of the first LEDs, the front end of the low beam concentrating structure is provided with a low beam light emitting surface, and the low beam light emitting surface is composed of five free-form surfaces connected together; the rear end of the high beam concentrating structure is provided with five concentrating bowls, the middle of the concentrating bowl is provided with a concentrating hole, one of the concentrating holes corresponds to one of the second LEDs, the front end of the high beam concentrating structure is provided with a high beam light emitting surface, and the high beam light emitting surface is composed of four free-form surfaces connected together.

[0013] As an optical unit of the present invention, the low beam light emitting surface is provided with an arc-shaped boss on the middle free curved surface, and the arc-shaped boss is used to increase the longitudinal width of the low beam light pattern; the low beam light emitting surface is provided with zone III fill light surfaces on both sides of the bottom of the middle free curved surface, and the zone III fill light surfaces are used to supplement the light of zone III in the low beam light pattern.

[0014] As the optical unit of the present invention, the arc-shaped boss is evenly distributed with inward-concave vertical stripes, and the inward-concave vertical stripes are used to correct the light so that the lateral width of the light is reduced. The zone III fill light surface is evenly distributed with outward-convex vertical stripes, and the outward-convex vertical stripes are used to correct the light so that the lateral width of the light is expanded.

[0015] A high and low beam module comprises a lens, a lens bracket and the above-mentioned optical unit, wherein the lens is arranged at the front end of the lens bracket and is fixed to the optical unit through the lens bracket.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the beam splitter bracket is provided to simultaneously fix the beam splitter, the concentrator, and the LED circuit board on the radiator, thereby avoiding the accuracy problem caused by multiple installations of multiple parts, thereby improving the accuracy of the relative position between the beam splitter and the concentrator, making installation easier, further improving production efficiency, reducing production costs, and effectively solving the problems existing in the prior art;

[0017] The beam splitter, concentrator, and LED circuit board are simultaneously fixed to the heat sink through the beam splitter bracket to form an optical unit. The optical unit can directly check for problems such as blurred low beam cutoff line, distorted color, and inaccurate glare point shielding, thereby avoiding the existing technology that requires the module to be assembled before such inspections can be performed, making maintenance and adjustment more convenient and quick;

[0018] The concentrator expands the longitudinal width of the light through the arc-shaped boss, and reduces the transverse width of the light through the concave vertical stripes, thereby homogenizing the light. This prevents the low beam pattern from being too narrow in the longitudinal direction or too wide in the transverse direction, further improving the quality of the low beam pattern and thus enhancing driving safety.

[0019] The concentrator supplements the light of Zone III in the low beam pattern through the Zone III fill light surface, further improving the quality of the low beam pattern, thereby avoiding the need to set a Zone III fill light structure on the lens 1, and making the appearance more beautiful; and modifies the light through the outward convex vertical stripes, avoiding the need to set a Zone III fill light surface with a wider horizontal surface, thereby reducing the weight of the concentrator and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the high and low beam modules of the utility model.

[0022] Figure 2This is a schematic diagram of the exploded structure of the lens bracket and optical unit in the high and low beam module of the present invention.

[0023] Figure 3 This is a schematic diagram of the rear structure of the lens bracket in the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the optical unit in the present invention.

[0025] Figure 5 This is an exploded view of the optical unit in the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the concentrator in the utility model.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the concentrator in the utility model.

[0028] Figure 8 This is a schematic diagram of the structure of the beam splitter bracket and the beam splitter in the present invention after decomposition.

[0029] In the figure: lens 1, lens bracket 2, mounting groove 21, clamping platform 22, connecting column 23, adjustment bracket mounting hole 24, limiting rod 25, optical unit 3, radiator 31, connecting hole column 311, LED circuit board 32, first LED 321, second LED 322, concentrator 33, low beam focusing structure 331, low beam light emitting surface 3311, arc-shaped boss 33111, concave vertical stripes 33112, zone III fill light surface 33113, convex vertical stripes 33114, high beam focusing structure 332, high beam light emitting surface 3321, support mounting foot 333, pressure strip 3331, support boss 3332, beam splitter 34, glare point shading Structure 341, spectrometer bracket 35, condenser mounting hole 351, mounting platform 352, support platform 3521, first interference pressure foot 3522, second interference pressure foot 3523, fixing hole 3524, connecting platform 3525, heat insulation board 4, main body board 41, step 411, limiting support foot 412, card interface 413, sinking platform 414, first limiting structure 5, first limiting column 51, first limiting hole 52, second limiting structure 6, second limiting column 61, limiting groove 62, avoidance hole 63, third limiting structure 7, third limiting column 71, third limiting hole 72, fourth limiting structure 8, fourth limiting column 81, fourth limiting hole 82, connecting hole 9. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figure 1-8As shown, the utility model provides a technical solution: a high and low beam module, comprising a lens 1, a lens bracket 2 and an optical unit 3, wherein the lens 1 is arranged at the front end of the lens bracket 2 and is fixed in front of the optical unit 3 through the lens bracket 2. Specifically, a heat insulation board 4 is also provided in the lens bracket 2, and the heat insulation board 4 is used to protect the lens bracket 2 from burns. The heat insulation board 4 includes a main body plate 41, a step 411 is provided at the front end of the main body plate 41, and limited support feet 412 are provided on both sides of the main body plate 41. A card interface 413 is provided at the rear end of the main body 41. The lens bracket 2 is provided with a mounting groove 21 at the mounting position, and the heat insulation board 4 is arranged in the mounting groove 21. The limited support feet 412 on both sides resist the groove wall at the corresponding position on the mounting groove 21, and resist the corresponding step surface provided on the mounting groove 21 through the steps 411, and then the card interface 413 is inserted into the card platform 22 provided on the lens bracket 2, so that the heat insulation board 4 is fixedly installed on the lens bracket 2. Through the cooperation of the limited support feet 412, the steps 411 and the card interface 413, the heat insulation board 4 can be better limited and installed, thereby preventing the heat insulation board 4 from shaking during the use of the module, and further improving the stability of the heat insulation board 4. In addition, a number of recessed platforms 414 are provided on the main body 41. The recessed platforms 414 are used to fit with the bottom surface of the mounting groove 21, thereby reducing the contact area, improving processing accuracy, and further improving the stability of the heat insulation board 4 after installation. The recessed platforms 414 create a gap between the main body 41 and the mounting groove 21, thereby facilitating air circulation and heat dissipation of the heat insulation board 4. In this embodiment, a connecting hole 9 is provided on the optical unit 3, and a connecting column 23 is provided on the lens holder 2. Screws are used to pass through the connecting hole 9 and connect to the connecting column 23, thereby fixing the lens holder 2 on the optical unit 3. Of course, in order to prevent installation deviation between the optical unit 3 and the lens holder 2, a fourth limiting structure 8 is provided between the two. The fourth limiting structure 8 includes a fourth limiting column 81 and a fourth limiting hole 82. The fourth limiting column 81 is inserted into the fourth limiting hole 82 to limit the lens holder 2 on the optical unit 3. The optical unit 3 here is the optical unit referred to in the present invention. The lens bracket 2 is also provided with an adjustment bracket mounting hole 24, which is used to install the module adjustment bracket, so as to facilitate the fixing of the module adjustment bracket on the lens bracket 2. In order to improve the accuracy of the position of the adjustment bracket mounting hole 24 after installation, a limiting rod 25 is also provided on the lens bracket 2. The limiting rod 25 is used to cooperate with the limiting structure hole on the module adjustment bracket, so that the module adjustment bracket is limited on the lens bracket 2.

[0032] The optical unit 3 includes a heat sink 31, an LED circuit board 32, a concentrator 33, a beam splitter 34, and a beam splitter bracket 35. The beam splitter 34 is mounted on the beam splitter bracket 35. The LED circuit board 32 and the beam splitter 33 are each secured to the heat sink 31 via the beam splitter bracket 35. The beam splitter 33 is positioned between the LED circuit board 32 and the beam splitter 34. The beam splitter bracket 35 simultaneously secures the beam splitter 34, the beam concentrator 33, and the LED circuit board 32 to the heat sink 31, avoiding precision issues caused by multiple assembly of multiple parts. This improves the relative positional accuracy between the beam splitter 34 and the beam concentrator 33, simplifies assembly, further improves production efficiency, reduces production costs, and effectively addresses issues existing in the prior art. In addition, after the optical unit 3 is assembled, it can be inspected directly to check for issues such as blurred low beam cutoff lines, distorted colors, and inaccurate glare point shielding. This avoids the conventional practice of requiring the module assembly to be completed before such inspections can be performed, making maintenance and adjustments more convenient and efficient, and increasing production efficiency. The beam splitter bracket 35 herein is the beam splitter bracket referred to in the present invention.

[0033] The beam splitter bracket 35 has a concentrator mounting hole 351 in the middle, and mounting platforms 352 are provided around the concentrator mounting hole 351. The concentrator mounting hole 351 is used for the front end of the concentrator 33 to pass through. The mounting platform 352 has forward-extending support platforms 3521 symmetrically provided on the left and right sides of the middle of the concentrator mounting hole 351. The support platforms 3521 are used to mount the beam splitter 34. The mounting platform 352 also has a first abutting foot 3522, a second abutting foot 3523, and a fixing hole 3524. The first abutting foot 3522 is used to fix the LED circuit board 32 to the heat sink 31, the second abutting foot 3523 is used to fix the concentrator 33 to the heat sink 31, and the fixing hole 3524 is used to fix the beam splitter bracket 35 to the heat sink 31. Specifically, a glare point shading structure 341 is provided on the beam splitter 34. The beam splitter bracket 35 is made of high-temperature PC. The mounting platform 352 is further provided with a forward-extending connecting platform 3525 at the bottom of the concentrator mounting hole 351. The connecting platform 3525 is used to connect the two supporting platforms 3521 to form a U-shaped structure. The provision of the connecting platform 3525 can reduce stress concentration and avoid the risk of fracture of the beam splitter bracket 35, thereby improving the production qualification rate of the beam splitter bracket 35. In this embodiment, the beam splitter bracket 35 is made of PC2405, which is relatively light. The LED circuit board 32, the concentrator 33, and the beam splitter bracket 35 are placed on the heat sink 31 in sequence. Screws are passed through the fixing holes 3524 on the beam splitter bracket 35 and connected to the connecting hole columns 311 provided on the heat sink 31, thereby fixing the beam splitter bracket 35 to the heat sink 31. At the same time, the LED circuit board 32 is fixed to the heat sink 31 by the first abutment foot 3522, and the concentrator 33 is fixed to the heat sink 31 by the second abutment foot 3523. This makes installation more convenient and quick, avoids the use of a large number of screws, and thus reduces production costs.

[0034] In order to prevent position deviation of the beam splitter 34 after installation, a first limiting structure 5 is provided between the beam splitter 34 and the support platform 3521. The first limiting structure 5 includes a first limiting column 51 and a first limiting hole 52. The first limiting column 51 is inserted into the first limiting hole 52, so that the beam splitter 34 is limited on the beam splitter bracket 35, and then the limited beam splitter 34 is fixed to the beam splitter bracket 35 using screws.

[0035] In order to prevent position deviation between the LED circuit board 32, the concentrator 33 and the spectrometer bracket 35 after installation, the concentrator 33 and the radiator 31 are limited by a second limiting structure 6. The second limiting structure 6 includes a second limiting column 61, a limiting groove 62 and an avoidance hole 63. The avoidance hole 63 is set on the LED circuit board 32, the second limiting column 61 is set on the concentrator 33, and the limiting groove 62 is set on the radiator 31. The second limiting column 61 passes through the avoidance hole 63 and cooperates with the limiting groove 62 to limit the concentrator 33 on the radiator 31. The LED circuit board 32, the beam splitter bracket 35, and the heat sink 31 are positioned by a third limiting structure 7. The third limiting structure 7 includes a third limiting post 71 and a third limiting hole 72. The third limiting post 71 is provided on the beam splitter bracket 35, and the third limiting holes 72 are provided on the LED circuit board 32 and the heat sink 31, respectively. The third limiting post 71 passes through the third limiting hole 72 on the LED circuit board 32 and the third limiting hole 72 on the heat sink 31, thereby simultaneously limiting the LED circuit board 32 and the beam splitter bracket 35 on the heat sink 31. Since the LED circuit board 32, the concentrator 33, and the beam splitter bracket 35 are all mounted on the heat sink 31, the positioning structure provided with the heat sink 31 as a reference can more accurately position the LED circuit board 32, the concentrator 33, and the beam splitter bracket 35 after installation, thereby ensuring the accuracy of the relative position between the beam splitter 34 and the concentrator 33, thereby improving the quality of the low beam pattern. When installing this embodiment, the LED circuit board 32 is first placed on the radiator 31, and then the concentrator 33 is placed on the radiator 31. The second limiting column 61 on the concentrator 33 passes through the avoidance hole 63 and cooperates with the limiting groove 62 to limit the concentrator 33 on the radiator 31. At this time, the concentrator 33 is located in front of the LED circuit board 32, and then the spectrometer bracket 35 is placed on the radiator 31. The upper third limiting column 71 of the spectrometer bracket 35 passes through the third limiting hole 72 on the LED circuit board 32 and the third limiting hole 72 on the radiator 31 in turn, thereby limiting the LED circuit board 32 and the spectrometer bracket 35 on the radiator 31 at the same time, and then the spectrometer bracket 35 is fixed with screws, thus completing the assembly of the optical unit 3. The assembly is simple, convenient and fast. The first and second contact pressure feet 3522 and 3523 can avoid the use of a large number of screws, which can reduce production costs and improve production efficiency.

[0036] To improve the stability of the concentrator 33, the concentrator 33 is provided with integral support mounting feet 333 on its left and right sides. The surfaces of the support mounting feet 333 facing the beam splitter bracket 35 are provided with pressure strips 3331. The pressure strips 3331 are used to contact the second abutting pressure foot 3523 on the beam splitter bracket 35. The pressure strips 3331 reduce the contact surface area, thereby improving machining accuracy and enhancing the stability of the press-fit installation. In this embodiment, the surfaces of the support mounting feet 333 facing the heat sink 31 are provided with support bosses 3332. The support bosses 3332 are used to contact the heat sink 31. The support bosses 3332 reduce the contact surface area, thereby improving machining accuracy and further enhancing the stability of the press-fit installation.

[0037] Specifically, two rows of horizontally distributed LED light sources are provided on the LED circuit board 32, the upper row of LED light sources consists of seven first LEDs 321, and the lower row of LED light sources consists of five second LEDs 322; the concentrator 33 consists of two parts, the upper part is a low beam focusing structure 331, and the lower part is a high beam focusing structure 332. The rear end of the low beam focusing structure 331 is provided with seven focusing bowls, and a focusing hole is provided in the middle of the focusing bowl, and one focusing hole corresponds to one first LED 321. The front end of the low beam focusing structure 331 is provided with a low beam light emitting surface 3311, and the low beam light emitting surface 3311 is composed of five free-form surfaces; the rear end of the high beam focusing structure 332 is provided with five focusing bowls, and a focusing hole is provided in the middle of the focusing bowl, and one focusing hole corresponds to one second LED 322. The front end of the high beam focusing structure 332 is provided with a high beam light emitting surface 3321, and the high beam light emitting surface 3321 is composed of four free-form surfaces. In this embodiment, when the low beam function is required, the light provided by the first LED 321 is adjusted by the low beam focusing structure 331, emitted by the low beam light emitting surface 3311, formed into a light beam with a bright and dark cut-off line through the beam splitter 34, and then passes through the lens 1 to form a low beam light pattern. When the high beam function is required, the first LED 321 operates simultaneously with the second LED 322. The light provided by the second LED 322 is adjusted by the high beam focusing structure 332, and then emitted by the high beam light emitting surface 3321. This light beam is combined with the light beam emitted by the low beam light emitting surface 3311, and then passes through the lens 1 to form a high beam light pattern.

[0038] In order to improve the quality of the low beam pattern, an arc-shaped boss 33111 is provided on the free curved surface in the middle of the low beam light-emitting surface 3311, and zone III fill light surfaces 33113 are provided on both sides of the bottom of the free curved surface in the middle of the low beam light-emitting surface 3311; the arc-shaped boss 33111 is used to increase the longitudinal width of the low beam pattern, optimize the lighting effect, and thus improve driving safety; the zone III fill light surface 33113 is used to supplement the light in zone III of the low beam pattern, avoiding the need to set a zone III fill light structure on the lens 1, and making the appearance more beautiful. Specifically, the arc-shaped boss 33111 is evenly distributed with inwardly concave vertical stripes 33112, and the zone III fill-light surface 33113 is evenly distributed with outwardly convex vertical stripes 33114. The inwardly concave vertical stripes 33112 are used to correct light, reducing the lateral width of the light and making the light reaching each zone more uniform and accurate. The outwardly convex vertical stripes 33114 are used to correct light, increasing the lateral width of the light and making the light reaching each zone more uniform and accurate. Light modification by the outwardly convex vertical stripes 33114 avoids the need for a wider zone III fill-light surface 33113, thereby reducing the weight of the concentrator 33 and lowering production costs. In this embodiment, the structural width of the inwardly concave vertical stripes 33112 is 0.8-2 mm, and the structural width of the outwardly convex vertical stripes 33114 is 0.8-2 mm.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A beam splitter bracket, characterized in that: A concentrator mounting hole is provided in the middle of the beam splitter bracket, and mounting platforms are provided around the concentrator mounting hole. The concentrator mounting hole is used for the front end of the concentrator to pass through, and the mounting platform is symmetrically provided with forward-extending support platforms on the left and right sides of the middle of the concentrator mounting hole, and the support platforms are used to install the beam splitter; the mounting platform is also provided with a first interference pressure foot, a second interference pressure foot and a fixing hole, the first interference pressure foot is used to fix the LED circuit board on the radiator, the second interference pressure foot is used to fix the concentrator on the radiator, and the fixing hole is used to fix the beam splitter bracket on the radiator.

2. The beam splitter bracket according to claim 1, wherein: The beam splitter and the support platform are limited by a first limiting structure, which includes a first limiting column and a first limiting hole. The first limiting column is inserted into the first limiting hole, so that the beam splitter is limited on the beam splitter bracket, and then the limited beam splitter is fixed to the beam splitter bracket using screws.

3. The beam splitter bracket according to claim 1, wherein: The beam splitter bracket is made of high-temperature PC. The mounting platform is further provided with a forward-extending connecting platform at the bottom of the concentrator mounting hole. The connecting platform is used to connect the two supporting platforms to form a U-shaped structure.

4. An optical unit, characterized in that: It includes a heat sink, an LED circuit board, a concentrator, a beam splitter and a beam splitter bracket according to any one of claims 1 to 3, wherein the beam splitter is provided with a glare point shading structure, the beam splitter is arranged on the beam splitter bracket, the LED circuit board and the concentrator are respectively fixed to the heat sink through the beam splitter bracket, so that the concentrator is located between the LED circuit board and the beam splitter, and the front end of the concentrator passes through the concentrator mounting hole.

5. The optical unit according to claim 4, wherein: The concentrator and the radiator are limited by a second limiting structure, the second limiting structure includes a second limiting column, a limiting groove and an avoidance hole, the avoidance hole is arranged on the LED circuit board, the second limiting column is arranged on the concentrator, the limiting groove is arranged on the radiator, the second limiting column passes through the avoidance hole and cooperates with the limiting groove, thereby limiting the concentrator on the radiator; the LED circuit board, the spectrometer bracket and the radiator are limited by a third limiting structure, the third limiting structure includes a third limiting column and a third limiting hole, the spectrometer bracket is provided with the third limiting column, the LED circuit board and the radiator are respectively provided with the third limiting holes, the third limiting column passes through the third limiting hole on the LED circuit board and the third limiting hole on the radiator in sequence, thereby limiting the LED circuit board and the spectrometer bracket to the radiator at the same time.

6. The optical unit according to claim 4, wherein: The concentrator is provided with support mounting feet of an integral structure on the left and right sides, and a pressure strip is provided on the surface of the support mounting foot facing the beam splitter bracket, and the pressure strip is used to contact the second interfering pressure foot on the beam splitter bracket, and a support boss is provided on the surface of the support mounting foot facing the radiator, and the support boss is used to contact the radiator.

7. The optical unit according to claim 4, wherein: Two rows of horizontally distributed LED light sources are provided on the LED circuit board, the upper row of LED light sources consists of seven first LEDs, and the lower row of LED light sources consists of five second LEDs; the concentrator consists of an upper and lower part, the upper part is a low beam concentrating structure, and the lower part is a high beam concentrating structure, the rear end of the low beam concentrating structure is provided with seven concentrating bowls, the middle of the concentrating bowl is provided with a concentrating hole, one of the concentrating holes corresponds to one of the first LEDs, the front end of the low beam concentrating structure is provided with a low beam light emitting surface, and the low beam light emitting surface is composed of five free-form surfaces connected together; the rear end of the high beam concentrating structure is provided with five concentrating bowls, the middle of the concentrating bowl is provided with a concentrating hole, one of the concentrating holes corresponds to one of the second LEDs, the front end of the high beam concentrating structure is provided with a high beam light emitting surface, and the high beam light emitting surface is composed of four free-form surfaces connected together.

8. The optical unit according to claim 7, wherein: The low beam light emitting surface is provided with an arc-shaped boss on the middle free curved surface, and the arc-shaped boss is used to increase the longitudinal width of the low beam light pattern; the low beam light emitting surface is provided with zone III fill light surfaces on both sides of the bottom of the middle free curved surface, and the zone III fill light surfaces are used to supplement the light of zone III in the low beam light pattern.

9. The optical unit according to claim 8, wherein The arc-shaped boss is evenly distributed with inward-concave vertical stripes, which are used to correct the light so that the horizontal width of the light is reduced. The zone III fill light surface is evenly distributed with outward-convex vertical stripes, which are used to correct the light so that the horizontal width of the light is expanded.

10. A high and low beam module, comprising a lens and a lens holder, characterized in that: It also includes the optical unit according to any one of claims 4 to 9, wherein the lens is arranged at the front end of the lens bracket and is fixed to the optical unit through the lens bracket.

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