Light barrier with III-region optical forming structure and low beam module thereof

Abstract

A low-beam module comprises a condenser, a lens, a light source and a light barrier with an area III optical forming structure, the light barrier comprises a first light blocking structure and a second light blocking structure, the second light blocking structure is arranged at the rear end of the first light blocking structure, the first light blocking structure is used for forming a light and shade cut-off line in a low-beam light pattern, and the second light blocking structure is used for forming a light and shade cut-off line. The second light blocking structure is used for releasing light to illuminate P1 to 6 in the lower beam pattern upper III area; the first light blocking structure is further provided with a first opening and a second opening, the first opening is used for releasing light to illuminate P7 in the lower beam pattern upper III area, and the second opening is used for releasing light to illuminate P8 in the lower beam pattern upper III area. By optimizing the structure of the light barrier, light rays provided for P1 to 6, P7 and P8 are divided into three areas to be managed independently and do not interfere with one another, effective distribution of light distribution values of eight test points in the III area is achieved, and the problems existing 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 light blocking plate with a zone III optical forming structure and a low beam module thereof. Background Art

[0002] With the widespread use of LED headlights, LED headlights have very strict requirements on the low beam light type. Take the low beam right driving as an example. Figure 1 As shown in the figure, according to the national standard GB25991, the low beam type needs to have certain brightness requirements in the III zone above the cut-off line to ensure that there is enough lighting in front of the vehicle and pedestrians in front of the vehicle and drivers of oncoming vehicles know the existence of the vehicle. Therefore, P1+P2+P3≥0.3lx; P4+P5+P6≥0.6lx; P7≥0.1lx; P8≥0.2lx are stipulated. At the same time, pedestrians in front of the vehicle and drivers of oncoming vehicles should not be dazzled, causing traffic accidents, so the maximum values ​​of P7 and P8 should not exceed 0.7lx.

[0003] At present, lighting and glare are a pair of contradictions that are difficult to reconcile in the design of LED headlights. Lamps with higher optical axes can obtain better low-beam road lighting effects, but glare also increases accordingly. The problem that urgently needs to be solved is how to obtain better low-beam road lighting effects without increasing glare, thereby improving vehicle driving safety. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a light-blocking plate and a low-beam module thereof with a zone III optical forming structure. By optimizing the structure of the light-blocking plate, the light provided to P1 to 6, P7, and P8 are divided into three areas for separate management without interfering with each other, thereby realizing the effective allocation of light distribution values ​​of the zone III test points, thereby solving the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a light blocking plate with a zone III optical forming structure, comprising a first light blocking structure and a second light blocking structure, the second light blocking structure is arranged at the rear end of the first light blocking structure, the first light blocking structure is used to form a light-dark cut-off line in a low beam light pattern, the second light blocking structure is used to release light to illuminate P1 to 6 in zone III on the low beam light pattern; the first light blocking structure is also provided with a first opening and a second opening, the first opening is used to release light to illuminate P7 in zone III on the low beam light pattern, and the second opening is used to release light to illuminate P8 in zone III on the low beam light pattern.

[0006] As a light blocking plate of the utility model, the second light blocking structure includes a main body and a connecting surface, the main body is arranged at the rear end of the first light blocking structure, and the height of the main body is lower than the height of the first light blocking structure, and the two are connected by the connecting surface to form a step; the rear end edge of the main body is provided with a folding surface extending downward, and the middle of the folding surface is provided with a third opening, and the third opening is used to release light to illuminate P1 to 6 in zone III on the low beam light pattern.

[0007] The light-blocking plate of the utility model further includes a mounting structure, which includes mounting feet symmetrically arranged at the left and right ends of the first light-blocking structure, the front end of the mounting feet is provided with an insert, the rear end of the mounting feet is provided with a connecting piece extending backward, the connecting piece is used to fix the rear end of the light-blocking plate to the lens bracket, and the insert is used to connect the front end of the light-blocking plate to the lens bracket, so that the front end of the light-blocking plate is supported by the lens bracket.

[0008] As the light-blocking plate of the utility model, a reinforcing structure is arranged on the connecting piece.

[0009] As the light-blocking plate of the utility model, the reinforcing structure is arranged between the main body and the folding surface.

[0010] A low beam module comprises a condenser, a lens, a light source and a light baffle as described above, wherein the light source is arranged behind the condenser, the lens is arranged in front of the condenser, and the light baffle is arranged between the lens and the condenser. Light emitted by the light source forms a light beam through the condenser, and the light beam is blocked by the light baffle and passes through the lens to form a low beam light pattern.

[0011] As the low beam module of the utility model, the front end of the concentrator is provided with a light emitting surface, and the rear end is provided with a light incident surface, the light incident surface corresponds to the position of the light source, at least 2 / 3 of the light emitting surface is located above the first light blocking structure, and the rest is located below the first light blocking structure and behind the second light blocking structure.

[0012] As the low beam module of the utility model, the outer surface of the lens is provided with a grid pattern, and the grid pattern is used to adjust the angle of light.

[0013] The low beam module of the utility model also includes a lens bracket and a heat dissipation base; the light source and the condenser are respectively arranged on the heat dissipation base to form a light source assembly; the lens and the light baffle are respectively arranged on the lens bracket to form a lens assembly, and the lens bracket is arranged on the heat dissipation base so that the lens assembly is fixed on the light source assembly.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: by optimizing the structure of the light baffle, the light provided to P1 to 6, P7, and P8 is divided into three areas for separate management without interfering with each other, and while enhancing the light intensity of P1 to 6, the maximum value of P7 and P8 can be made not to exceed 0.7lx, thereby achieving effective allocation of light distribution values ​​of the test points in zone III, thereby solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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:

[0016] Figure 1 It is the light distribution diagram of the right-hand running low beam headlight on the light distribution screen at a distance of 25M and the position diagram of the eight test points in zone III in the background technology.

[0017] Figure 2 It is a structural schematic diagram of the low beam module in the utility model.

[0018] Figure 3 It is a schematic structural diagram of the lens assembly and the light source assembly in the low beam module of the utility model after being separated.

[0019] Figure 4 for Figure 3 Schematic diagram of the rear structure of the middle lens assembly.

[0020] Figure 5 It is a front view of the light blocking plate in the utility model.

[0021] Figure 6 It is a bottom view of the light blocking plate in the utility model.

[0022] Figure 7 It is a structural schematic diagram of the utility model when the light blocking plate is located in front of the light source assembly.

[0023] Figure 8 for Figure 7 Sectional view of AA.

[0024] In the figure: concentrator 1, light emitting surface 11, light incident surface 12, lens 2, grid pattern 21, light source 3, substrate 31, LED particles 32, light blocking plate 4, first light blocking structure 41, first opening 411, second opening 412, second light blocking structure 42, main body 421, connecting surface 422, folding surface 423, third opening 424, mounting foot 43, insert 431, connecting plate 432, mounting hole 4321, limiting hole 4322, reinforcement structure 4323, lens bracket 5, slot 51, mounting hole column 52, limiting column 53, heat dissipation base 6. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 2-8 As shown, the utility model provides a technical solution: a low beam module, comprising a condenser 1, a lens 2, a light source 3, a light baffle 4, a lens bracket 5 and a heat dissipation base 6; the light source 3 and the condenser 1 are respectively arranged on the heat dissipation base 6, and the condenser 1 is located in front of the light source 3, so as to form a light source assembly; wherein, the front end of the condenser 1 is provided with a light emitting surface 11, and the rear end is provided with a light incident surface 12, and the positions of the light source 3 and the light incident surface 12 correspond; the lens 2 and the light baffle 4 are respectively arranged on the lens bracket 5, so as to form a lens assembly; the lens bracket 5 is fixed to the heat dissipation base 6 by screws, so as to fix the lens assembly to the light source assembly, and the light baffle 4 is located between the lens 2 and the condenser 1; the light emitted by the light source 3 forms a light beam through the condenser 1, the light beam is blocked by the light baffle 4, and passes through the lens 2 to form a low beam light pattern. Specifically, the lens 2 can be made of glass, or of course, plastic. Here, the lens 2 is preferably made of glass. The light source 3 includes a substrate 31 and LED particles 32. A plurality of LED particles 32 are arranged on the substrate 31. The substrate 31 can be fixed to the heat dissipation base 6 by screws. The heat dissipation base 6 is provided with a plurality of heat dissipation structures, which increase the heat dissipation area and improve the heat dissipation effect, thereby increasing the service life of the LED particles 32. The number of light incident surfaces 12 on the concentrator 1 corresponds to the number of LED particles 32, and one LED particle 32 corresponds to one light incident surface 12. The light shield 4 here is the light shield with a zone III optical forming structure referred to in the utility model.

[0027] Furthermore, the light blocking plate 4 includes a first light blocking structure 41 and a second light blocking structure 42. The second light blocking structure 42 is arranged at the rear end of the first light blocking structure 41. The first light blocking structure 41 is used to form a light-dark cut-off line in the low beam light pattern, and the second light blocking structure 42 is used to release light to illuminate P1 to 6 in zone III on the low beam light pattern. The first light blocking structure 41 is also provided with a first opening 411 and a second opening 412. The first opening 411 is used to release light to illuminate P7 in zone III on the low beam light pattern, and the second opening 412 is used to release light to illuminate P8 in zone III on the low beam light pattern. Specifically, the light blocking plate 4 is an integrally formed part, and the second light blocking structure 42 is integrally formed and arranged at the rear end of the first light blocking structure 41. The second light blocking structure 42 includes a main body 421 and a connecting surface 422. The main body 421 is arranged behind the first light blocking structure 41, and the height of the main body 421 is lower than the height of the first light blocking structure 41. The two are connected by the connecting surface 422 to form a step; the rear end edge of the main body 421 is provided with a folding surface 423 extending downward, and a third opening 424 is provided in the middle of the folding surface 423. The third opening 424 is used to release light to illuminate P1 to 6 in zone III on the low beam light pattern. In this embodiment, the light blocking plate 4 is made of 0.1mm sus304 stainless steel; when the light blocking plate 4 is arranged in front of the concentrator 1, at least 2 / 3 of the light emitting surface 11 of the concentrator 1 is located above the first light blocking structure 41, and the remaining part is located below the first light blocking structure 41 and behind the second light blocking structure 42; the light emitted from the light emitting surface 11 behind it is blocked by the steps and the folding surface 423 on the second light blocking structure 42, and a part of the light is released through the third opening 424, so as to realize the illumination of P1 to 6 in the III zone on the low beam light pattern. The second light blocking structure 42 here can prevent excess light from being given to the area outside P1 to 6 in the III zone through the arrangement of the steps and the folding surface 423, so as to ensure the accuracy of the light. The first light blocking structure 41 is also provided with a first opening 411 and a second opening 412. The first opening 411 is used to release light to illuminate P7 in zone III of the low beam light pattern, and the second opening 412 is used to release light to illuminate P8 in zone III of the low beam light pattern. The sizes of the first opening 411, the second opening 412 and the third opening 424 can control the intensity of illumination and the size of the light spot, and the positions of the first opening 411, the second opening 412 and the third opening 424 can control the position of the corresponding regulatory test point. By optimizing the structure of the light blocking plate 4, the light provided to P1 to 6, P7 and P8 is divided into three areas for separate management without interfering with each other. In this way, when the illumination value of the P1 to 6 area is increased, the illumination value of the P7 and P8 areas will not be affected, thereby realizing the effective allocation of the light distribution values ​​of the zone III test points, which can effectively solve the problems existing in the prior art.

[0028] Furthermore, the light blocking plate 4 also includes a mounting structure, which includes mounting feet 43 symmetrically arranged at the left and right ends of the first light blocking structure 41, the front end of the mounting foot 43 is provided with an insert 431, and the rear end of the mounting foot 43 is provided with a connecting piece 432 extending backward, the connecting piece 432 is used to fix the rear end of the light blocking plate 4 to the lens bracket 5, and the insert 431 is used to connect the front end of the light blocking plate 4 to the lens bracket 5, and the front end of the light blocking plate 4 is supported by the lens bracket 5. Specifically, the lens bracket 5 is provided with a slot 51 that cooperates with the insert 431; the connecting piece 432 is provided with a mounting hole 4321 and a limiting hole 4322, and the lens bracket 5 is also provided with a mounting hole column 52 and a limiting column 53 that cooperate with the connecting piece 432; when the light blocking sheet 4 is installed, the insert 431 cooperates with the slot 51, so that the front end of the light blocking sheet 4 is connected to the lens bracket 5, and at the same time, the limiting column 53 cooperates with the limiting hole 4322, so that the rear end of the light blocking sheet 4 is limited on the lens bracket 5, and then a screw is used to pass through the mounting hole 4321 and connect with the mounting hole column 52, so that the light blocking sheet 4 is fixed to the lens bracket 5, that is, the installation of the light blocking sheet 4 is completed. Since the front end of the light blocking sheet 4 is supported by the slot 51, it can be prevented that the front end of the light blocking sheet 4 is unsupported after installation, and when in use, it sags due to the influence of vibration and deadweight, affecting the quality of the low beam type.

[0029] Furthermore, a reinforcing structure 4323 is provided on the connecting piece 432 , and the strength of the connecting piece 432 is increased by the reinforcing structure 4323 , thereby improving the service life of the light blocking piece 4 .

[0030] Furthermore, a reinforcement structure 4323 is also provided between the main body 421 and the folding surface 423, and the strength between the two is increased by the reinforcement structure 4323. In this embodiment, a plurality of reinforcement structures 4323 are evenly distributed between the main body 421 and the folding surface 423, thereby preventing the possibility of deformation caused by improper storage and further improving the quality of the low beam pattern.

[0031] Furthermore, the outer surface of the lens 2 is provided with a grid pattern 21, which is used to adjust the light angle. Specifically, the grid pattern 21 corrects the light so that the light reaching each area is more uniform and more accurate, thereby further improving the quality of the low beam light type.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A light-blocking plate having a zone III optical shaping structure, characterized in that: The invention comprises a first light blocking structure and a second light blocking structure, wherein the second light blocking structure is arranged at the rear end of the first light blocking structure, the first light blocking structure is used to form a light-dark cut-off line in a low beam light pattern, and the second light blocking structure is used to release light to illuminate P1 to 6 in zone III on the low beam light pattern; the first light blocking structure is also provided with a first opening and a second opening, the first opening is used to release light to illuminate P7 in zone III on the low beam light pattern, and the second opening is used to release light to illuminate P8 in zone III on the low beam light pattern.

2. The light barrier according to claim 1, characterized in that: The second light blocking structure includes a main body and a connecting surface. The main body is arranged at the rear end of the first light blocking structure, and the height of the main body is lower than the height of the first light blocking structure. The two are connected by the connecting surface to form a step; the rear end edge of the main body is provided with a folding surface extending downward, and the middle of the folding surface is provided with a third opening, and the third opening is used to release light to illuminate P1 to 6 in zone III on the low beam light pattern.

3. The light barrier according to claim 1, characterized in that: It also includes a mounting structure, which includes mounting feet symmetrically arranged at the left and right ends of the first light-blocking structure, an insert is provided at the front end of the mounting foot, and a connecting piece extending backward is provided at the rear end of the mounting foot, the connecting piece is used to fix the rear end of the light-blocking plate to the lens bracket, and the insert is used to connect the front end of the light-blocking plate to the lens bracket, so that the front end of the light-blocking plate is supported by the lens bracket.

4. The light barrier according to claim 3, characterized in that: The connecting piece is provided with a reinforcement structure.

5. The light barrier according to claim 2, characterized in that: A reinforcement structure is arranged between the main body and the folding surface.

6. A low beam module, comprising a condenser, a lens, and a light source, characterized in that: It also includes a light baffle as described in any one of claims 1 to 5 above, wherein the light source is arranged behind the concentrator, the lens is arranged in front of the concentrator, and the light baffle is arranged between the lens and the concentrator. The light emitted by the light source forms a light beam through the concentrator, and the light beam is blocked by the light baffle and passes through the lens to form a low beam light pattern.

7. The low beam module according to claim 6, characterized in that: A light emitting surface is arranged at the front end of the concentrator, and a light incident surface is arranged at the rear end, the light incident surface corresponds to the position of the light source, at least 2 / 3 of the light emitting surface is located above the first light blocking structure, and the rest is located below the first light blocking structure and behind the second light blocking structure.

8. The low beam module according to claim 6, characterized in that: The outer surface of the lens is provided with a grid pattern, and the grid pattern is used to adjust the angle of light.

9. The low beam module according to claim 6, characterized in that: It also includes a lens bracket and a heat dissipation base; the light source and the condenser are respectively arranged on the heat dissipation base to form a light source assembly; the lens and the light baffle are respectively arranged on the lens bracket to form a lens assembly, and the lens bracket is arranged on the heat dissipation base so that the lens assembly is fixed on the light source assembly.

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