WO2021036218A1 - Micro vehicle lamp module and reflecting structure - Google Patents

Abstract

A vehicle lamp module and a reflecting structure thereof. The vehicle lamp module comprises a reflector (2) and a lens (3), the front end of the reflector (2) being provided with a reflector interconnecting piece (21), and the rear end of the lends (3) being provided with a lens interconnecting piece (31). The reflector interconnecting piece (21) is cooperatively connected with the lens interconnecting piece (31) such that the reflector (2) is relatively fixed with the lens (3). The reflector (2) comprises a first reflecting surface (2a), a second reflecting surface (2b) and a third reflecting surface (2c). The vehicle lamp module further comprises a fourth reflecting surface (2d). The first reflecting surface (2a) is used for forming a central area (A) light shape, the second reflecting surface (2b) is used for forming a widened area (B) light shape, the third reflecting surface (2c) and the fourth reflecting surface (2d) are used for together forming a III area (C) light shape. The fourth reflecting surface (2d) and the reflector (2) form an integral structure. The reflecting structure comprises a reflector (2) and a cut-off line structure (8). The cut-off line structure (8) is used for forming a cutoff line (E) of the light shape; the cut-off line structure (8) and the reflector (2) form an integral structure. High optical system accuracy is thus obtained.

Description

Mini car lamp module and reflection structure Technical field

The invention relates to the technical field of vehicle lighting, in particular to a vehicle lamp module and a reflection structure.

Background technique

In the field of vehicle lamp technology, a vehicle lamp module refers to a device that has a lens or equivalent structure as the final light emitting element and is used for low beam or high beam illumination of automobile headlights. In recent years, as the development of the automotive industry has gradually matured and stabilized, the types of car lamp modules have become more and more diversified, and more and more requirements have been put forward in terms of the overall performance of car lamp modules, such as car headlights. The uniformity of the low beam or high beam light shape, the visibility of the low beam, the heat dissipation performance, the brightness of the high beam, and the structure, weight and volume of the module.

Taking the low beam lighting as an example, according to the regulations, as shown in Figure 1, the low beam shape formed by the car lamp module includes a central area A, a widened area B, a Ⅲ area C, a 50L dark area D, and a cut-off line E, as shown in Figure 2. As shown, the widened area B and the central area A partially overlap to increase the low beam irradiation range. Correspondingly, the vehicle lamp module has an optical structure for forming the light shape of each zone. The car lamp module in the prior art mainly has the following defects.

(1) The brightness of the central area of the light shape is low. The reflector of the existing car light module has only one smooth reflecting surface, and the diffusion angle of the light reflected by the reflecting surface is basically the same, and the diffusion angle reflected to the final car light shape is also the same, resulting in the light reaching the center of the light shape The light in the area is not concentrated enough, and the brightness of the light shape in the central area is not high enough. However, the brightness of the central area of the light shape is as high as possible within the range allowed by laws and regulations, so as to improve the visibility of the driver’s road surface. The reflecting surface of the mirror cannot meet this requirement.

(2) Larger volume. The existing car lamp module with reflector as the primary optical element uses LED light source, and its luminous flux per unit area is only 300-400lm/mm ^2. If you want to obtain a light shape that meets the legal brightness, you need to install multiple LED light sources, resulting in a light-emitting area. It needs a mirror with a larger reflecting surface to match. Correspondingly, the focal length of the mirror is longer, and the size of the lens matching the mirror is also larger, usually 50mm high and 70mm wide. In order to ensure the light effect, the lens The focal length is also longer, which makes the entire car light module bulky.

(3) The accuracy of the optical system is low. On the one hand, in order to obtain the ideal car light shape, it is necessary to ensure the relative position accuracy of the primary optical element and the lens. In the existing car light module, the primary optical element and radiator are positioned and installed, and the lens and lens holder are positioned. , After installation, it is positioned and installed with the radiator, or positioned and installed with the radiator via a transition bracket. This positioning installation method causes multiple assembly errors between the primary optical element and the lens, and the manufacturing accuracy and positioning and installation accuracy are very high. It is difficult to ensure that the accuracy of the optical system is low. On the other hand, the optical structures of the existing car lamp module used to form the cut-off line, 50L dark zone and III zone are all set on the lens holder. The front end of the lens holder is used to install the lens, and the rear end is used to fix the radiator. Connection is equivalent to the need to ensure the relative position accuracy of the primary optical element, the lens holder and the lens in order to obtain a light shape that meets the requirements of the law. The relative position accuracy of the three is more difficult to guarantee, and the accuracy of the optical system is also more difficult to guarantee.

(4) The dispersion phenomenon is serious. The thickness of the upper and lower ends of the lens used in the existing car lamp module is very thin, and the light that hits the upper and lower ends of the lens will be greatly deflected, causing serious dispersion phenomenon, and does not meet the requirements of laws and regulations.

Summary of the invention

The technical problem to be solved by the present invention is to provide a vehicle lamp module with high optical system precision to overcome the above-mentioned defects of the prior art.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

The invention provides a vehicle lamp module, which includes a reflector and a lens. The front end of the reflector is provided with a reflector connection part, and the rear end of the lens is provided with a lens connection part. The mirror and the lens are relatively fixed.

Preferably, it further includes a circuit board, the circuit board is provided with a positioning hole, and the rear end of the reflector is provided with a positioning pin that is inserted and matched with the positioning hole.

Preferably, the reflecting mirror includes a first reflecting surface, a second reflecting surface and a third reflecting surface. The vehicle lamp module further includes a fourth reflecting surface. The first reflecting surface is used to form the light shape of the central area, and the second reflecting surface is used to The light shape of the expanded area is formed, the third reflecting surface and the fourth reflecting surface are used to jointly form the light shape of zone III, and the fourth reflecting surface and the reflecting mirror are integrated as an integral structure.

Preferably, it further includes a cut-off line structure for forming a light-shaped cut-off line, and the cut-off line structure and the reflector are integrated as an integral structure.

Preferably, it further includes a shielding block for controlling the brightness of the 50L dark area of the light shape, and the shielding block and the reflector are integrated as an integral structure.

Preferably, the third reflective surface and the first reflective surface, and the third reflective surface and the second reflective surface are all located on different ellipsoidal surfaces.

Preferably, the radius of curvature of the lens is R, the height of the lens is H and satisfies: H≦4R/3.

The present invention also provides a vehicle lamp module, including a reflector and a lens. The reflector includes a first reflective surface, a second reflective surface, and a third reflective surface. The vehicle lamp module further includes a fourth reflective surface and a first reflective surface. Used to form the light shape of the central area, the second reflecting surface is used to form the light shape of the expanded area, the third reflecting surface and the fourth reflecting surface are used to form the light shape of zone III together, the fourth reflecting surface and the reflecting mirror are integrated as a whole structure.

Preferably, it further includes a cut-off line structure for forming a light-shaped cut-off line, and the cut-off line structure and the reflector are integrated as an integral structure.

Preferably, it further includes a shielding block for controlling the brightness of the 50L dark area of the light shape, and the shielding block and the reflector are integrated as an integral structure.

Preferably, the third reflective surface and the first reflective surface, and the third reflective surface and the second reflective surface are all located on different ellipsoidal surfaces.

Preferably, the radius of curvature of the lens is R, the height of the lens is H and satisfies: H≦4R/3.

The present invention also provides a reflective structure, which includes a reflective mirror and a cut-off line structure, the cut-off line structure is used to form a light-shaped cut-off line, and the cut-off line structure and the reflector are integrated as an integral structure.

Preferably, the reflecting mirror includes a first reflecting surface, a second reflecting surface, and a third reflecting surface, and the reflecting structure further includes a fourth reflecting surface. The first reflecting surface is used to form the light shape of the central area, and the second reflecting surface is used to form a widening. The area light shape, the third reflecting surface and the fourth reflecting surface are used to jointly form the zone III light shape, and the fourth reflecting surface and the reflecting mirror are an integral structure.

Preferably, the third reflective surface and the first reflective surface, and the third reflective surface and the second reflective surface are all located on different ellipsoidal surfaces.

Preferably, it further includes a shielding block for controlling the brightness of the 50L dark area of the light shape, and the shielding block and the reflector are integrated as an integral structure.

Compared with the prior art, the present invention has significant progress:

The vehicle lamp module provided by the present invention directly determines the relative position of the two by directly determining the relative position of the reflector and the lens through the matching connection of the reflector connecting part and the lens connecting part, and the reflector and the lens are assembled into an integral structure. Direct positioning between. When assembling the reflector and lens to the circuit board and radiator, due to the fixed assembly and positioning relationship between the reflector and lens, there will be no positioning error between the two due to the assembly of the circuit board and the radiator. That is, multiple assembly errors are reduced, so the positioning accuracy and installation reliability of the reflector and lens can be ensured, thereby having a higher optical system accuracy.

The present invention also provides a vehicle lamp module. The fourth reflecting surface and the reflecting mirror are set as an integral structure, so that the first reflecting surface is used to form the light shape of the central area and the light shape of the expanded area is formed. The second reflecting surface and the third reflecting surface and the fourth reflecting surface used to form the light shape of zone III have a relatively fixed positional relationship, and there will be no errors due to the assembly relationship between the reflecting mirror and the lens, so only the reflection is required. The precision of the assembly between the mirror and the lens can ensure the precision of the optical system, thereby having a higher precision of the optical system.

The present invention also provides a reflection structure in which the cut-off line structure and the reflector are set as an integral structure, so that the reflector used to reflect light to form the illumination light shape and the cut-off line structure used to form the cut-off line of the light shape It has a relatively fixed positional relationship and will not cause errors due to the assembly relationship between the mirror and the lens or other components. Therefore, it is only necessary to ensure the assembly accuracy between the mirror and the lens or other components to ensure the accuracy of the optical system. Has a high optical system accuracy.

Description of the drawings

Figure 1 is a schematic diagram of the low beam light shape.

Fig. 2 is a schematic diagram of the central area and the expanded area of the low beam shape.

Fig. 3 is a schematic diagram of optical components of a vehicle lamp module according to an embodiment of the present invention.

4 is a schematic diagram of a longitudinal section of a reflector of a vehicle lamp module according to an embodiment of the present invention.

5 is a schematic diagram of the light path of the light reflected by the first reflecting surface in the vehicle lamp module of the embodiment of the present invention.

6 is a schematic diagram of the light path of the light reflected by the second reflecting surface in the vehicle lamp module of the embodiment of the present invention.

FIG. 7 is a schematic diagram of the light path of the light reflected by the third reflecting surface and the fourth reflecting surface in the vehicle lamp module of the embodiment of the present invention.

FIG. 8 is a schematic view of the structure of a vehicle lamp module according to an embodiment of the present invention from a perspective.

FIG. 9 is a schematic view of another view of the structure of the vehicle lamp module according to the embodiment of the present invention.

Fig. 10 is a schematic longitudinal cross-sectional view of a vehicle lamp module according to an embodiment of the present invention.

Fig. 11 is an exploded schematic diagram of a vehicle lamp module according to an embodiment of the present invention.

FIG. 12 is a schematic diagram of the connection structure of the lens and the reflector in the vehicle lamp module according to the embodiment of the present invention.

13 is a schematic diagram of the connection structure of the lens, the reflector and the circuit board in the vehicle lamp module of the embodiment of the present invention.

Fig. 14 is a schematic longitudinal cross-sectional view of Fig. 13.

FIG. 15 is a schematic structural diagram of a viewing angle when the reflector is used to form a low-beam light shape in a vehicle lamp module according to an embodiment of the present invention.

FIG. 16 is a schematic structural diagram of another view angle when the reflector is used to form a low beam shape in the vehicle lamp module of the embodiment of the present invention.

Wherein, the reference signs are explained as follows:

A. Central area B. Widening area

C, Ⅲ area D, 50L dark area

E. Cut-off line 1. Light source

2. Mirror 2a, the first reflecting surface

2b, the second reflecting surface 2c, the third reflecting surface

2d. Fourth reflecting surface 21. Mirror connection part

22. The first connecting hole 23. Locating pin

3. Lens 3a. The light-emitting surface of the lens

31. Lens connection part 32. First connection pin

33. The second connection pin 4. Circuit board

41. Positioning hole 5. Radiator

6. Mounting screws 7. Sunshade

71. The second connecting hole 8. Cut-off line structure

9. Blocking block

detailed description

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing and simplifying the present invention. The description does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected", and "connected" should be understood in a broad sense unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.

In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

As shown in FIG. 1 to FIG. 16, the first aspect of the embodiment of the present invention provides a vehicle lamp module. The car light module is used to form the light shape of the car light. As shown in Figures 1 and 2, according to laws and regulations, the low beam shape formed by the car light module of this embodiment includes a central area A, a widening area B, a Ⅲ area C, a 50L dark area D, and a cut-off line E. The widening area Part B overlaps with the central area A, which is used to increase the low beam irradiation range.

10 and 11, the car light module of this embodiment includes a reflector 2 and a lens 3. The front end of the reflector 2 is provided with a reflector connecting portion 21, and the rear end of the lens 3 is provided with a lens connecting portion 31, the reflector The connecting portion 21 and the lens connecting portion 31 are matedly connected, so that the mirror 2 and the lens 3 are relatively fixed. Thus, through the mating connection of the mirror connecting portion 21 and the lens connecting portion 31, the mirror 2 and the lens 3 are assembled into an integral structure to directly determine the relative position of the two, and the relationship between the mirror 2 and the lens 3 is realized. Direct positioning. When assembling the mirror 2 and the lens 3 to the circuit board 4 and the heat sink 5, due to the fixed assembly and positioning relationship between the mirror 2 and the lens 3, it will not be caused by the assembly with the circuit board 4 and the heat sink 5. A positioning error occurs between the two, that is, multiple assembly errors are reduced, so the positioning accuracy and installation reliability of the mirror 2 and the lens 3 can be ensured, thereby having a higher optical system accuracy. It should be noted that there is an implementation in the prior art that integrates the reflector and the lens holder together and then directly positions the lens. The reflector and the lens holder of this embodiment are integrated, and the structure is very complicated. As an important optical element, it is necessary to ensure its processing accuracy to ensure high optical system accuracy. However, the integrated structure of the reflector in the prior art extends a long length from back to front, which is difficult to process and difficult to ensure optical accuracy. Compared with the prior art, the reflector 2 and the lens 3 in this embodiment are directly positioned and connected, and the structure is simple, and the reflector 2 is easy to process, and the optical system has high precision.

The mating connection mode of the mirror connecting portion 21 and the lens connecting portion 31 may be any one of screw connection, riveting, adhesive bonding, and welding. Preferably, the mirror connecting portion 21 and the lens connecting portion 31 are mated and connected by riveting, which has the advantages of convenient operation and accurate positioning.

Specifically, referring to FIGS. 11 and 12, the mirror connecting portion 21 is provided with a first connecting hole 22, the lens connecting portion 31 is provided with a first connecting pin 32, and the first connecting pin 32 is inserted into the first connecting hole 22. Cooperate. When assembling, the mirror connecting portion 21 is opposed to the lens connecting portion 31, and the first connecting pin 32 is inserted into the first connecting hole 22 and can be riveted with the first connecting hole 22 to realize the mirror connecting portion 21 and the lens connecting portion The positioning connection between 31, that is, the positioning connection between the mirror 2 and the lens 3 is realized. Preferably, two first connecting holes 22 may be provided on the mirror connecting portion 21, and correspondingly, the lens connecting portion 31 is provided with two first connecting pins 32 that are plug-in-fitted with the two first connecting holes 22. . One of the two first connecting holes 22 is a circular hole or a waist-shaped hole whose diameter matches the diameter of the corresponding first connecting pin 32, and is used to realize the positioning of the relative position of the reflector 2 and the lens 3; The first connecting hole 22 is a round hole with a diameter larger than the diameter of the corresponding first connecting pin 32, and is used to realize the riveting of the mirror connecting portion 21 and the lens connecting portion 31. Preferably, a mirror connecting portion 21 is respectively provided above and below the front end of the mirror 2, and each mirror connecting portion 21 is respectively provided with two first connecting holes 22, preferably two diagonal first connecting holes. The holes 22 are used as positioning holes for positioning. To avoid over-positioning, one of them is a round hole and the other is a waist-shaped hole. Correspondingly, a lens connecting portion 31 is provided above and below the rear end of the lens 3 for assembly. At this time, the upper mirror connection portion 21 is opposed to the upper lens connection portion 31, and the lower mirror connection portion 21 is opposed to the lower lens connection portion 31, thus, through two pairs of connected reflections The mirror connecting portion 21 and the lens connecting portion 31 jointly define the relative position of the mirror 2 and the lens 3, which can ensure the accuracy of positioning of the mirror 2 and the lens 3 and the stability of the assembly.

11, 13 and 14, the car light module of this embodiment further includes a circuit board 4, the circuit board 4 is provided with a positioning hole 11, the rear end of the reflector 2 is provided with a positioning pin 23, the positioning pin 23 and The positioning hole 41 is mated with each other. When assembling the reflector 2 to the circuit board 4, the relative position of the reflector 2 and the circuit board 4 can be defined by the insertion and fit of the positioning pin 23 and the positioning hole 41, and accurate positioning between the two can be achieved. Therefore, through the plug-in connection of the positioning pin 23 and the positioning hole 41, the reflector 2 and the circuit board 4 are assembled together to determine the relative position of the two, and the direct connection between the reflector 2 and the circuit board 4 is realized. Positioning. Since the lens 3 is also assembled into an integral structure with the reflector 2 for direct positioning, the vehicle lamp module of this embodiment only needs to ensure the positioning accuracy between the lens 3 and the reflector 2, and between the reflector 2 and the circuit board 4. This can ensure the accuracy of the optical system, reduce multiple assembly errors, and make precise assembly easier. Preferably, the circuit board 4 may be provided with two positioning holes 41. Correspondingly, the rear end of the reflector 2 is provided with two positioning pins 23, and the two positioning pins 23 are respectively mated with the two positioning holes 41. Increase the positioning accuracy and assembly stability between the mirror 2 and the circuit board 4.

Further, the circuit board 4 and the heat sink 5 are connected and positioned. Referring to Fig. 11, the reflector 2, the circuit board 4 and the heat sink 5 can be fixedly connected by a mounting screw 6 (the through hole on the circuit board 4 for the mounting screw 6 to pass through is not shown in the figure).

10 and 11, preferably, the car lamp module of this embodiment further includes a light shield 7, which is connected to the lens 3, and the lens 3 is housed in the light shield 7, with only the light emitting surface 3a exposed outside , The light shield 7 can prevent the light from exiting from the side of the lens 3. The connection between the light shield 7 and the lens 3 can be any one of screw connection, riveting, glue connection, and welding. Preferably, the light shield 7 and the lens 3 are connected by riveting, which has the advantages of convenient operation and accurate positioning.

Specifically, referring to Figures 10 and 11, the hood 7 is provided with a second connecting hole 71, the lens connecting portion 31 of the lens 3 is provided with a second connecting pin 33, and the second connecting pin 33 is inserted into the second connecting hole 71. Connect with. When assembling, the light shield 7 is sleeved on the lens 3, and the second connecting pin 33 is inserted into the second connecting hole 71 and can be riveted with the second connecting hole 71 to realize the positioning connection between the light shield 7 and the lens 3. Preferably, two second connecting holes 71 may be provided on the light shield 7. Correspondingly, the lens connecting portion 31 is provided with two second connecting pins 33 that are respectively inserted and fitted with the two second connecting holes 71. One of the two second connecting holes 71 is a round hole or a waist-shaped hole whose diameter matches the diameter of the corresponding second connecting pin 33, and is used to realize the positioning of the relative position of the hood 7 and the lens 3; The second connecting hole 71 is a round hole with a diameter larger than the diameter of the corresponding second connecting pin 33, and is used to realize the riveting of the light shield 7 and the lens 3. Preferably, a lens connecting portion 31 is provided above and below the rear end of the lens 3, two second connecting pins 33 are respectively provided on each lens connecting portion 31, and the rear end of the light shield 7 is above and below the rear end respectively. Two second connecting holes 71 are provided, preferably two diagonally opposite second connecting holes 71 are used as positioning holes for positioning. In order to avoid over-positioning, one of them is a round hole and the other is a waist-shaped hole. Ensure the accuracy of the positioning of the hood 7 and the lens 3 and the stability of the assembly.

Referring to FIG. 14, the vehicle lamp module of this embodiment further includes a light source 1, and the light source 1 is arranged on the circuit board 4. The light emitted by the light source 1 is reflected by the reflector 2 and then enters the lens 3, and is refracted by the lens 3 and then exits from the light-emitting surface 3a of the lens 3 to form an illumination light shape. Here, the side closer to the light source 1 and away from the lens 3 is defined as the back, and the side closer to the lens 3 and away from the light source 1 is defined as the front.

Further, referring to FIGS. 3 and 4, the reflector 2 includes a first reflecting surface 2a, a second reflecting surface 2b, and a third reflecting surface 2c. The vehicle lamp module of this embodiment further includes a fourth reflecting surface 2d. Among them, the first reflective surface 2a is used to form the light shape of the central area A, the second reflective surface 2b is used to form the light shape of the expanded area B, and the third reflective surface 2c and the fourth reflective surface 2d are used to jointly form the light shape of the III area C. . Specifically, referring to FIG. 5, a first part of the light beam emitted by the light source 1 is directed to the first reflective surface 2a, is reflected by the first reflective surface 2a and then directed to the lens 3, and is refracted by the lens 3 and then exits from the light-emitting surface 3a of the lens 3. , Forming a light shape in the central area A. Referring to Fig. 6, a second part of the light beam emitted by the light source 1 is directed to the second reflecting surface 2b, reflected by the second reflecting surface 2b, and then directed to the lens 3, after being refracted by the lens 3, it is emitted from the light emitting surface 3a of the lens 3, forming The light shape of the broadened area B. Under the same luminous flux, the smaller the light diffusion angle, the more the light converges, and the higher the brightness of the light shape formed. In this embodiment, the diffusion angle of the light reflected by the first reflecting surface 2a is smaller than the diffusion angle of the light reflected by the second reflecting surface 2b, thereby effectively improving the brightness of the light shape of the central area A formed by the first reflecting surface 2a, thereby Improve driver's road visibility. Referring to Fig. 7, a third part of the light beam emitted by the light source 1 is directed to the third reflective surface 2c, is reflected by the third reflective surface 2c and then directed to the fourth reflective surface 2d, and is reflected by the fourth reflective surface 2d and directed to the lens 3. , After being refracted by the lens 3, it is emitted from the light-emitting surface 3a of the lens 3, forming a light shape of zone III C. The fourth reflective surface 2d can be any one of a flat surface, an inner concave curved surface, and an outer convex curved surface, as long as it can form a light shape of Zone III C that meets the requirements of regulations. Since the light reflected by the third reflective surface 2c needs to be reflected on the fourth reflective surface 2d and then shot to the lens 3, the light reflected by the first reflective surface 2a and the second reflective surface 2b is directly shot to the lens 3. Therefore, the third reflective surface 2c and the first reflective surface 2a, the third reflective surface 2c and the second reflective surface 2b are all located on different ellipsoidal surfaces.

4, in this embodiment, a step can be formed between the first reflective surface 2a and the second reflective surface 2b, the first reflective surface 2a and the second reflective surface 2b can be connected, and the first reflective surface 2a and the second reflective surface 2b can be connected. There is a step difference between the reflective surface 2a and the second reflective surface 2b. Thus, the first reflective surface 2a and the second reflective surface 2b are not on the same smooth surface, and the first reflective surface 2a and the second reflective surface 2b are located on different ellipsoidal surfaces, so that the first reflective surface 2a and the second reflective surface 2a are located on different ellipsoidal surfaces. After the surface 2b reflects light, different light diffusion angles can be formed, and the diffusion angle of the light reflected by the first reflection surface 2a is smaller than the diffusion angle of the light reflected by the second reflection surface 2b. The first reflective surface 2a and the second reflective surface 2b can also be connected without forming a step, but it is satisfied that the curvature of the first reflective surface 2a is greater than the curvature of the second reflective surface 2b, so that the first reflective surface 2a can also be realized. The diffusion angle of the reflected light is smaller than the diffusion angle of the light reflected by the second reflecting surface 2b. Of course, the curvature of the first reflective surface 2a and the second reflective surface 2b can also be the same. On the same smooth surface, such a reflective structure is easier to process, but the light shape of the formed central area A has a relatively low brightness.

Referring to FIG. 13 and FIG. 14, preferably, the fourth reflecting surface 2d and the reflecting mirror 2 are formed as an integral structure. As a result, the first reflective surface 2a, the second reflective surface 2b, the third reflective surface 2c, and the fourth reflective surface 2d have a relatively fixed positional relationship, and there will be no errors due to the assembly relationship between the mirror 2 and the lens 3 Therefore, it is only necessary to ensure the accuracy of the assembly between the mirror 2 and the lens 3 to ensure the accuracy of the optical system. Preferably, the fourth reflecting surface 2d may be arranged on the reflecting mirror connecting portion 21 whose front end of the reflecting mirror 2 is located below.

Referring to FIGS. 15 and 16, the vehicle lamp module of this embodiment further includes a cut-off line structure 8 and a blocking block 9. The cut-off line structure 8 is used to form a light-shaped cut-off line E. The light from the light source 1 to the first reflective surface 2a is reflected by the first reflective surface 2a, is cut off by the cut-off line structure 8, and then radiates to the lens 3, and passes through the lens 3. After refraction, it is emitted from the light-emitting surface 3a of the lens 3 to form a light shape in the central area A with a cut-off line E; the light from the light source 1 to the second reflective surface 2b is reflected by the second reflective surface 2b and is cut off by the cut-off line structure 8. Then it is emitted to the lens 3, and after being refracted by the lens 3, it is emitted from the light-emitting surface 3a of the lens 3 to form a light shape of the expanded area B. The blocking block 9 is used to control the brightness of the 50L dark area D of the light shape. The blocking block 9 can block part of the light before the cut-off line structure 8 cuts off, so that the illuminance of the 50L dark area D of the low beam light shape is reduced to a value that meets the legal requirements. , Thereby achieving the control of the brightness of the 50L dark area D of the light shape. The blocking block 9 may be cylindrical or slope-shaped convex. The prior art shielding blocks mostly use bumps or rectangular blocks, but the bumps will make the 50L dark area a dark spot, which is relatively abrupt; the rectangular block will cause another inflection point besides the original inflection point to appear near the cut-off line. When the inflection point is captured by the light distribution, it is easy to catch the inflection point by mistake and affect the light distribution effect. Therefore, the blocking block 9 adopts cylindrical or slope-shaped protrusions, which can avoid the phenomenon of abrupt light shape or misappropriation of the inflection point.

The cut-off line structure 8 and the reflecting mirror 2 may be an integral structure, and the blocking block 9 and the reflecting mirror 2 may also be an integral structure. As a result, the cut-off line structure 8, the blocking block 9 and the mirror 2 have a relatively fixed positional relationship, and there will be no errors due to the assembly relationship between the mirror 2 and the lens 3. Therefore, only the mirror 2 and the lens 3 need to be ensured. The accuracy of the assembly can ensure the accuracy of the optical system. Preferably, the cut-off line structure 8 and the blocking block 9 are integrated with the reflector 2 as an integral structure. Both the cut-off line structure 8 and the blocking block 9 can be arranged on the mirror connecting portion 21 with the front end of the reflector 2 located below. .

Preferably, the fourth reflecting surface 2d, the cut-off line structure 8, and the blocking block 9 are integrated with the reflecting mirror 2 as an integral structure. Then, the positional relationship of the first reflecting surface 2a, the second reflecting surface 2b, the third reflecting surface 2c, the fourth reflecting surface 2d, the cut-off line structure 8 and the blocking block 9 are all fixed, which will not be caused by the reflecting mirror 2 and the lens 3. The assembly relationship between the two leads to errors, and it is only necessary to ensure the assembly accuracy between the mirror 2 and the lens 3 to ensure the accuracy of the optical system.

The vehicle light module of this embodiment can realize low beam and high beam. When the vehicle light module is applied to the main low beam, the shape of the cut-off line structure 8 is the same as that of the light and dark cut-off line of the low beam shape, which has a step difference (see FIG. 16). When the vehicle light module is applied to the auxiliary low beam, the shape of the cut-off line structure 8 can be smooth without step difference, or it can be the same shape as the cut-off line shape of the low beam light shape. When the vehicle light module is applied to the high beam, the shape of the cut-off line structure 8 can be set according to the shape of the lower boundary of the high beam shape.

Preferably, the radius of curvature of the lens 3 is R, the height of the lens 3 is H and satisfies: H≤4R/3. The height H can be cut off the upper and lower ends of the existing lens, leaving only the middle thickness. The thick part is realized, so that the size of the lens 3 can be reduced under the premise of ensuring the light effect of the lens 3, so that the volume of the entire car light module is greatly reduced, forming a miniature car light module, and the corresponding manufacturing cost is also large. reduce. If the size of the optical element of the car lamp module in the prior art is simply reduced proportionally, the reduced car lamp module has the disadvantages of unsatisfactory light shape effect, poor light efficiency, and inability to provide a good lighting effect for the driver. This embodiment does not simply reduce the size of the lens 3 proportionally, but cuts off its upper and lower ends on the basis of the existing lens, and reduces the upper and lower height dimensions of the lens 3 under the same curvature, thereby ensuring the lens 3, and reduce the size of lens 3. At the same time, the thickness of the middle part of the lens 3 of this embodiment is relatively thick, which weakens the serious dispersion caused by the thin lens thickness, and can effectively improve the dispersion phenomenon. In practical applications, the upper and lower ends of the existing lens can be cut to the same size, and the height of the obtained lens 3 from the center to the upper and lower ends is H/2. Of course, the upper and lower ends of the existing lens , The cut-off size of the lower ends can also be different. The left and right width of the lens can be relatively long without affecting the dispersion. Therefore, the front projection of the lens 3 in this embodiment is a horizontal rectangle.

In the vehicle lamp module of this embodiment, the light source 1 may be an LED light source. However, in consideration of reducing the volume of the vehicle lamp module, preferably, the light source 1 is a laser light source. In the vehicle light module of this embodiment, the light source 1 adopts a laser light source and is equipped with the above-mentioned optical component structure, which can greatly reduce the volume of the vehicle light module. The luminous flux per unit area of the ^{laser light source can reach about 1200lm/mm 2} , and only one laser light source can achieve the light shape brightness required by the regulations, and the light-emitting area is small. Therefore, the size of the reflector 2 can also be small. Correspondingly, the size of the lens 3 can also be made small. The focal length of the reflector 2 in this embodiment can be 10mm-20mm, preferably 10mm, while the focal length of the reflector in the prior art can only be 30mm-40mm. In this embodiment, the lens 3 can achieve: the upper and lower height H is 5mm-15mm, preferably 10mm; the width is 15mm-35mm, preferably 30mm. In order to make the light reflected by the mirror 2 enter the lens 3 as much as possible, the focal length of the lens 3 is also reduced accordingly. The focal length of the lens 3 in this embodiment can be 10mm-20mm, while the focal length of the lens in the prior art can only be 30mm-40mm. Therefore, in this embodiment, the length of the entire car lamp module in the front and rear direction is greatly reduced, and the length can be about 80mm, while the length of the car lamp module in the prior art is about 130mm-150mm; similarly, the entire car lamp module The width and height of the group will also be reduced, which can be about 35mm wide and 40mm high, while the car light module of the prior art has a width of about 90mm-100mm and a height of about 90mm-100mm. In summary, compared with the prior art, the volume of the entire vehicle light module of this embodiment is greatly reduced, and belongs to the size of the vehicle light module. Therefore, the car lamp module of this embodiment adopts a laser light source with a small light-emitting area and high luminous intensity per unit area, so that the size and focal length of the reflector 2 and the lens 3 are greatly reduced, and the structure is compact and compact, making the entire vehicle The volume of the lamp module is greatly reduced, and the corresponding manufacturing cost is also greatly reduced. At the same time, it has a good commercial value prospect, because the miniature car light module is very suitable for the development trend of vehicle styling, and can even make the existing headlights disappear, and the car light module can be arranged in an inconspicuous position for vehicle lighting. For example, bumpers, grilles, etc., help to further enhance the appearance of the car.

As shown in FIG. 1 to FIG. 16, the second aspect of the embodiment of the present invention also provides a vehicle lamp module. The car light module is used to form the light shape of the car light. As shown in Figures 1 and 2, according to laws and regulations, the low beam shape formed by the car light module of this embodiment includes a central area A, a widening area B, a Ⅲ area C, a 50L dark area D, and a cut-off line E. The widening area Part B overlaps with the central area A, which is used to increase the low beam irradiation range.

3 and 4, the car light module of this embodiment includes a reflector 2 and a lens 3, and may also include a light source 1. The light emitted by the light source 1 is reflected by the reflector 2 and then enters the lens 3, and is refracted by the lens 3. Then, it is emitted from the light-emitting surface 3a of the lens 3 to form an illuminating light shape. Here, the side closer to the light source 1 and away from the lens 3 is defined as the back, and the side closer to the lens 3 and away from the light source 1 is defined as the front. The reflecting mirror 2 includes a first reflecting surface 2a, a second reflecting surface 2b, and a third reflecting surface 2c. The vehicle lamp module of this embodiment also includes a fourth reflecting surface 2d. Among them, the first reflective surface 2a is used to form the light shape of the central area A, the second reflective surface 2b is used to form the light shape of the expanded area B, and the third reflective surface 2c and the fourth reflective surface 2d are used to jointly form the light shape of the III area C. . Specifically, referring to FIG. 5, a first part of the light beam emitted by the light source 1 is directed to the first reflective surface 2a, is reflected by the first reflective surface 2a and then directed to the lens 3, and is refracted by the lens 3 and then exits from the light-emitting surface 3a of the lens 3. , Forming a light shape in the central area A. Referring to Fig. 6, a second part of the light beam emitted by the light source 1 is directed to the second reflecting surface 2b, reflected by the second reflecting surface 2b, and then directed to the lens 3, after being refracted by the lens 3, it is emitted from the light emitting surface 3a of the lens 3, forming The light shape of the broadened area B. Referring to Fig. 7, a third part of the light beam emitted by the light source 1 is directed to the third reflective surface 2c, is reflected by the third reflective surface 2c and then directed to the fourth reflective surface 2d, and is reflected by the fourth reflective surface 2d and directed to the lens 3. , After being refracted by the lens 3, it is emitted from the light-emitting surface 3a of the lens 3, forming a light shape of zone III C. Referring to FIG. 13 and FIG. 14, in this embodiment, the fourth reflecting surface 2d and the reflecting mirror 2 are an integral structure. As a result, the first reflective surface 2a, the second reflective surface 2b, the third reflective surface 2c, and the fourth reflective surface 2d have a relatively fixed positional relationship, and there will be no errors due to the assembly relationship between the mirror 2 and the lens 3 Therefore, it is only necessary to ensure the accuracy of the assembly between the mirror 2 and the lens 3 to ensure the accuracy of the optical system, thereby having a higher accuracy of the optical system.

Under the same luminous flux, the smaller the light diffusion angle, the more the light converges, and the higher the brightness of the light shape formed. In this embodiment, preferably, the diffusion angle of the light reflected by the first reflecting surface 2a is smaller than the diffusion angle of the light reflected by the second reflecting surface 2b, thereby effectively improving the light shape of the central area A formed by the first reflecting surface 2a. Brightness, thereby improving the road visibility of the driver.

4, in this embodiment, a step can be formed between the first reflective surface 2a and the second reflective surface 2b, the first reflective surface 2a and the second reflective surface 2b can be connected, and the first reflective surface 2a and the second reflective surface 2b can be connected. There is a step difference between the reflective surface 2a and the second reflective surface 2b. Thus, the first reflective surface 2a and the second reflective surface 2b are not on the same smooth surface, and the first reflective surface 2a and the second reflective surface 2b are located on different ellipsoidal surfaces, so that the first reflective surface 2a and the second reflective surface 2a are located on different ellipsoidal surfaces. After the surface 2b reflects light, different light diffusion angles can be formed, and the diffusion angle of the light reflected by the first reflection surface 2a is smaller than the diffusion angle of the light reflected by the second reflection surface 2b. The first reflective surface 2a and the second reflective surface 2b can also be connected without forming a step, but it is satisfied that the curvature of the first reflective surface 2a is greater than the curvature of the second reflective surface 2b, so that the first reflective surface 2a can also be realized. The diffusion angle of the reflected light is smaller than the diffusion angle of the light reflected by the second reflecting surface 2b. Of course, the curvature of the first reflective surface 2a and the second reflective surface 2b can also be the same. On the same smooth surface, such a reflective structure is easier to process, but the light shape of the formed central area A has a relatively low brightness.

The fourth reflective surface 2d can be any one of a flat surface, an inner concave curved surface, and an outer convex curved surface, as long as it can form a light shape of Zone III C that meets the requirements of regulations. Since the light reflected by the third reflective surface 2c needs to be reflected on the fourth reflective surface 2d and then shot to the lens 3, the light reflected by the first reflective surface 2a and the second reflective surface 2b is directly shot to the lens 3. Therefore, the third reflective surface 2c and the first reflective surface 2a, the third reflective surface 2c and the second reflective surface 2b are all located on different ellipsoidal surfaces.

Further, referring to FIGS. 15 and 16, the vehicle lamp module of this embodiment further includes a cut-off line structure 8 and a blocking block 9. The cut-off line structure 8 is used to form a light-shaped cut-off line E. The light from the light source 1 to the first reflective surface 2a is reflected by the first reflective surface 2a, is cut off by the cut-off line structure 8, and then radiates to the lens 3, and passes through the lens 3. After refraction, it is emitted from the light-emitting surface 3a of the lens 3 to form a light shape in the central area A with a cut-off line E; the light from the light source 1 to the second reflective surface 2b is reflected by the second reflective surface 2b and is cut off by the cut-off line structure 8. Then it is emitted to the lens 3, and after being refracted by the lens 3, it is emitted from the light-emitting surface 3a of the lens 3 to form a light shape of the expanded area B. The blocking block 9 is used to control the brightness of the 50L dark area D of the light shape. The blocking block 9 can block part of the light before the cut-off line structure 8 cuts off, so that the illuminance of the 50L dark area D of the low beam light shape is reduced to a value that meets the legal requirements. , Thereby achieving the control of the brightness of the 50L dark area D of the light shape. The blocking block 9 may be cylindrical or slope-shaped convex. The prior art shielding blocks mostly use bumps or rectangular blocks, but the bumps will make the 50L dark area a dark spot, which is relatively abrupt; the rectangular block will cause another inflection point besides the original inflection point to appear near the cut-off line. When the inflection point is captured by the light distribution, it is easy to catch the inflection point by mistake and affect the light distribution effect. Therefore, the blocking block 9 adopts cylindrical or slope-shaped protrusions, which can avoid the phenomenon of abrupt light shape or misappropriation of the inflection point.

The cut-off line structure 8 and the reflecting mirror 2 may be an integral structure, and the blocking block 9 and the reflecting mirror 2 may also be an integral structure. As a result, the cut-off line structure 8, the blocking block 9 and the mirror 2 have a relatively fixed positional relationship, and there will be no errors due to the assembly relationship between the mirror 2 and the lens 3. Therefore, only the mirror 2 and the lens 3 need to be ensured. The accuracy of the assembly can ensure the accuracy of the optical system. Preferably, both the cut-off line structure 8 and the blocking block 9 are integrated with the reflector 2 as an integral structure.

Preferably, the fourth reflecting surface 2d, the cut-off line structure 8, and the blocking block 9 are integrated with the reflecting mirror 2 as an integral structure. Then, the positional relationship of the first reflecting surface 2a, the second reflecting surface 2b, the third reflecting surface 2c, the fourth reflecting surface 2d, the cut-off line structure 8 and the blocking block 9 are all fixed, which will not be caused by the reflecting mirror 2 and the lens 3. The assembly relationship between the two leads to errors, and it is only necessary to ensure the assembly accuracy between the mirror 2 and the lens 3 to ensure the accuracy of the optical system.

The vehicle light module of this embodiment can realize low beam and high beam. When the vehicle light module is applied to the main low beam, the shape of the cut-off line structure 8 is the same as that of the light and dark cut-off line of the low beam shape, which has a step difference (see FIG. 16). When the vehicle lamp module is applied to the auxiliary low beam, the shape of the cut-off line structure 8 can be smooth without step difference, or it can be the same shape as the cut-off line shape of the low beam light shape. When the vehicle light module is applied to the high beam, the shape of the cut-off line structure 8 can be set according to the shape of the lower boundary of the high beam shape.

Preferably, the radius of curvature of the lens 3 is R, the height of the lens 3 is H and satisfies: H≤4R/3. The height H can be cut off the upper and lower ends of the existing lens, leaving only the middle thickness. The thick part is realized, so that the size of the lens 3 can be reduced under the premise of ensuring the light effect of the lens 3, so that the volume of the entire car light module is greatly reduced, forming a miniature car light module, and the corresponding manufacturing cost is also large. reduce. If the size of the optical element of the car lamp module in the prior art is simply reduced proportionally, the reduced car lamp module has the disadvantages of unsatisfactory light shape effect, poor light efficiency, and inability to provide a good lighting effect for the driver. This embodiment does not simply reduce the size of the lens 3 proportionally, but cuts off its upper and lower ends on the basis of the existing lens, and reduces the upper and lower height dimensions of the lens 3 under the same curvature, thereby ensuring the lens 3, and reduce the size of lens 3. At the same time, the thickness of the middle part of the lens 3 of this embodiment is relatively thick, which weakens the serious dispersion caused by the thin lens thickness, and can effectively improve the dispersion phenomenon. In practical applications, the upper and lower ends of the existing lens can be cut to the same size, and the height of the obtained lens 3 from the center to the upper and lower ends is H/2. Of course, the upper and lower ends of the existing lens , The cut-off size of the lower ends can also be different. The left and right width of the lens can be relatively long without affecting the dispersion. Therefore, the front projection of the lens 3 in this embodiment is a horizontal rectangle.

Further, the front end of the reflector 2 is provided with a reflector connecting portion 21, and the rear end of the lens 3 is provided with a lens connecting portion 31. The reflector connecting portion 21 and the lens connecting portion 31 are matedly connected, so that the reflector 2 and the lens 3 are relatively fixed. Thus, through the mating connection of the mirror connecting portion 21 and the lens connecting portion 31, the mirror 2 and the lens 3 are assembled into an integral structure to directly determine the relative position of the two, and the relationship between the mirror 2 and the lens 3 is realized. Direct positioning. When assembling the mirror 2 and the lens 3 to the circuit board 4 and the heat sink 5, due to the fixed assembly and positioning relationship between the mirror 2 and the lens 3, it will not be caused by the assembly with the circuit board 4 and the heat sink 5. A positioning error occurs between the two, that is, multiple assembly errors are reduced, so the positioning accuracy and installation reliability of the mirror 2 and the lens 3 can be ensured, thereby having a higher optical system accuracy. It should be noted that there is an implementation in the prior art that integrates the reflector and the lens holder together and then directly positions the lens. The reflector and the lens holder of this embodiment are integrated, and the structure is very complicated. As an important optical element, it is necessary to ensure its processing accuracy to ensure high optical system accuracy. However, the integrated structure of the reflector in the prior art extends a long length from back to front, which is difficult to process and difficult to ensure optical accuracy. Compared with the prior art, the reflector 2 and the lens 3 in this embodiment are directly positioned and connected, and the structure is simple, and the reflector 2 is easy to process, and the optical system has high precision.

Preferably, the fourth reflecting surface 2d, the cut-off line structure 8 and the blocking block 9 can all be arranged on the mirror connecting portion 21 with the front end of the reflecting mirror 2 located below.

The mating connection mode of the mirror connecting portion 21 and the lens connecting portion 31 may be any one of screw connection, riveting, adhesive bonding, and welding. Preferably, the mirror connecting portion 21 and the lens connecting portion 31 are mated and connected by riveting, which has the advantages of convenient operation and accurate positioning.

Specifically, referring to FIGS. 11 and 12, the mirror connecting portion 21 is provided with a first connecting hole 22, the lens connecting portion 31 is provided with a first connecting pin 32, and the first connecting pin 32 is inserted into the first connecting hole 22. Cooperate. When assembling, the mirror connecting portion 21 is opposed to the lens connecting portion 31, and the first connecting pin 32 is inserted into the first connecting hole 22 and can be riveted with the first connecting hole 22 to realize the mirror connecting portion 21 and the lens connecting portion The positioning connection between 31, that is, the positioning connection between the mirror 2 and the lens 3 is realized. Preferably, two first connecting holes 22 may be provided on the mirror connecting portion 21, and correspondingly, the lens connecting portion 31 is provided with two first connecting pins 32 that are plug-in-fitted with the two first connecting holes 22. . One of the two first connecting holes 22 is a circular hole or a waist-shaped hole whose diameter matches the diameter of the corresponding first connecting pin 32, and is used to realize the positioning of the relative position of the reflector 2 and the lens 3; The first connecting hole 22 is a round hole with a diameter larger than the diameter of the corresponding first connecting pin 32, and is used to realize the riveting of the mirror connecting portion 21 and the lens connecting portion 31. Preferably, a mirror connecting portion 21 is respectively provided above and below the front end of the mirror 2, and each mirror connecting portion 21 is respectively provided with two first connecting holes 22, preferably two diagonal first connecting holes. The holes 22 are used as positioning holes for positioning. To avoid over-positioning, one of them is a round hole and the other is a waist-shaped hole. Correspondingly, a lens connecting portion 31 is provided above and below the rear end of the lens 3 for assembly. At this time, the upper mirror connection portion 21 is opposed to the upper lens connection portion 31, and the lower mirror connection portion 21 is opposed to the lower lens connection portion 31, thus, through two pairs of connected reflections The mirror connecting portion 21 and the lens connecting portion 31 jointly define the relative position of the mirror 2 and the lens 3, which can ensure the accuracy of positioning of the mirror 2 and the lens 3 and the stability of the assembly.

Referring to FIG. 11, FIG. 13 and FIG. 14, the vehicle lamp module of this embodiment further includes a circuit board 4, and the light source 1 is provided on the circuit board 4. The circuit board 4 is provided with a positioning hole 41, the rear end of the reflector 2 is provided with a positioning pin 23, and the positioning pin 23 is mated with the positioning hole 41. When assembling the reflector 2 to the circuit board 4, the relative position of the reflector 2 and the circuit board 4 can be defined by the insertion and fit of the positioning pin 23 and the positioning hole 41, and accurate positioning between the two can be achieved. Therefore, through the plug-in connection of the positioning pin 23 and the positioning hole 41, the reflector 2 and the circuit board 4 are assembled together to determine the relative position of the two, and the direct connection between the reflector 2 and the circuit board 4 is realized. Positioning. Since the lens 3 is also assembled into an integral structure with the reflector 2 for direct positioning, the vehicle lamp module of this embodiment only needs to ensure the positioning accuracy between the lens 3 and the reflector 2, and between the reflector 2 and the circuit board 4. This can ensure the accuracy of the optical system, reduce multiple assembly errors, and make precise assembly easier. Preferably, the circuit board 4 may be provided with two positioning holes 41. Correspondingly, the rear end of the reflector 2 is provided with two positioning pins 23, and the two positioning pins 23 are respectively mated with the two positioning holes 41. Increase the positioning accuracy and assembly stability between the mirror 2 and the circuit board 4.

Further, the circuit board 4 and the heat sink 5 are connected and positioned. Referring to Fig. 11, the reflector 2, the circuit board 4 and the heat sink 5 can be fixedly connected by a mounting screw 6 (the through hole on the circuit board 4 for the mounting screw 6 to pass through is not shown in the figure).

10 and 11, preferably, the car lamp module of this embodiment further includes a light shield 7, which is connected to the lens 3, and the lens 3 is housed in the light shield 7, with only the light emitting surface 3a exposed outside , The light shield 7 can prevent the light from exiting from the side of the lens 3. The connection between the light shield 7 and the lens 3 can be any one of screw connection, riveting, glue connection, and welding. Preferably, the light shield 7 and the lens 3 are connected by riveting, which has the advantages of convenient operation and accurate positioning.

Specifically, referring to Figures 10 and 11, the hood 7 is provided with a second connecting hole 71, the lens connecting portion 31 of the lens 3 is provided with a second connecting pin 33, and the second connecting pin 33 is inserted into the second connecting hole 71. Connect with. When assembling, the light shield 7 is sleeved on the lens 3, and the second connecting pin 33 is inserted into the second connecting hole 71 and can be riveted with the second connecting hole 71 to realize the positioning connection between the light shield 7 and the lens 3. Preferably, two second connecting holes 71 may be provided on the light shield 7. Correspondingly, the lens connecting portion 31 is provided with two second connecting pins 33 that are respectively inserted and fitted with the two second connecting holes 71. One of the two second connecting holes 71 is a round hole or a waist-shaped hole whose diameter matches the diameter of the corresponding second connecting pin 33, and is used to realize the positioning of the relative position of the hood 7 and the lens 3; The second connecting hole 71 is a round hole with a diameter larger than the diameter of the corresponding second connecting pin 33, and is used to realize the riveting of the light shield 7 and the lens 3. Preferably, a lens connecting portion 31 is provided above and below the rear end of the lens 3, two second connecting pins 33 are respectively provided on each lens connecting portion 31, and the rear end of the light shield 7 is above and below the rear end respectively. Two second connecting holes 71 are provided, preferably two diagonally opposite second connecting holes 71 are used as positioning holes for positioning. In order to avoid over-positioning, one of them is a round hole and the other is a waist-shaped hole. Ensure the accuracy of the positioning of the hood 7 and the lens 3 and the stability of the assembly.

In the vehicle lamp module of this embodiment, the light source 1 may be an LED light source. However, in consideration of reducing the volume of the vehicle lamp module, preferably, the light source 1 is a laser light source. In the vehicle light module of this embodiment, the light source 1 adopts a laser light source and is equipped with the above-mentioned optical component structure, which can greatly reduce the volume of the vehicle light module. The luminous flux per unit area of the ^{laser light source can reach about 1200lm/mm 2} , and only one laser light source can achieve the light shape brightness required by the regulations, and the light-emitting area is small. Therefore, the size of the reflector 2 can also be small. Correspondingly, the size of the lens 3 can also be made small. The focal length of the reflector 2 in this embodiment can be 10mm-20mm, preferably 10mm, while the focal length of the reflector in the prior art can only be 30mm-40mm. In this embodiment, the lens 3 can achieve: the upper and lower height H is 5mm-15mm, preferably 10mm; the width is 15mm-35mm, preferably 30mm. In order to make the light reflected by the mirror 2 enter the lens 3 as much as possible, the focal length of the lens 3 is also reduced accordingly. The focal length of the lens 3 in this embodiment can be 10mm-20mm, while the focal length of the lens in the prior art can only be 30mm-40mm. Therefore, in this embodiment, the length of the entire car lamp module in the front and rear direction is greatly reduced, and the length can be about 80mm, while the length of the car lamp module in the prior art is about 130mm-150mm; similarly, the entire car lamp module The width and height of the group will also be reduced, which can be about 35mm wide and 40mm high, while the car light module of the prior art has a width of about 90mm-100mm and a height of about 90mm-100mm. In summary, compared with the prior art, the volume of the entire vehicle light module of this embodiment is greatly reduced, and belongs to the size of the vehicle light module. Therefore, the car lamp module of this embodiment adopts a laser light source with a small light-emitting area and high luminous intensity per unit area, so that the size and focal length of the reflector 2 and the lens 3 are greatly reduced, and the structure is compact and compact, making the entire vehicle The volume of the lamp module is greatly reduced, and the corresponding manufacturing cost is also greatly reduced. At the same time, it has a good commercial value prospect, because the miniature car light module is very suitable for the development trend of vehicle styling, and can even make the existing headlights disappear, and the car light module can be arranged in an inconspicuous position for vehicle lighting. For example, bumpers, grilles, etc., help to further enhance the appearance of the car.

As shown in Figures 1 to 16, the third aspect of the embodiments of the present invention also provides a reflective structure, which is used to reflect the light emitted by the light source 1 to the lens 3, so that the light from the lens 3 is refracted by the lens 3. The light emitting surface 3a is emitted to form an illuminating light shape. Here, the side closer to the light source 1 and away from the lens 3 is defined as the back, and the side closer to the lens 3 and away from the light source 1 is defined as the front. As shown in Figure 1 and Figure 2, according to regulations, the low beam shape includes a central area A, a widened area B, a Ⅲ area C, a 50L dark area D, and a cut-off line E. The widened area B and the central area A partially overlap, for Increase the range of low beam illumination.

Referring to Figure 3, Figure 4, Figure 15 and Figure 16, the reflective structure of this embodiment includes a reflector 2 and a cut-off line structure 8. The reflector 2 reflects the light emitted by the light source 1 to the lens 3, and the cut-off line structure 8 is used to form The cut-off line E of the light shape. The light from the light source 1 to the reflector 2 is reflected by the reflector 2, cut off by the cut-off line structure 8, and then directed to the lens 3, refracted by the lens 3, and emitted from the light-emitting surface 3a of the lens 3. An illumination light shape with a cut-off line E is formed. In this embodiment, the cut-off line structure 8 and the reflector 2 are integrated as an integral structure, so that the reflector 2 used to reflect light to form the illumination light shape and the cut-off line structure 8 used to form the cut-off line of the light shape are relatively fixed. The positional relationship between the mirror 2 and the lens 3 or other components will not cause errors. Therefore, it is only necessary to ensure the assembly accuracy between the mirror 2 and the lens 3 or other components to ensure the accuracy of the optical system. Thereby it has a higher optical system accuracy.

3 and 4, the reflecting mirror 2 includes a first reflecting surface 2a, a second reflecting surface 2b, and a third reflecting surface 2c. The reflecting structure of this embodiment further includes a fourth reflecting surface 2d. Among them, the first reflective surface 2a is used to form the light shape of the central area A, the second reflective surface 2b is used to form the light shape of the expanded area B, and the third reflective surface 2c and the fourth reflective surface 2d are used to jointly form the light shape of the III area C. . Specifically, referring to FIG. 5, a first part of the light beam emitted by the light source 1 is directed to the first reflective surface 2a, is reflected by the first reflective surface 2a and then directed to the lens 3, and is refracted by the lens 3 and then exits from the light-emitting surface 3a of the lens 3. , Forming a light shape in the central area A. Referring to Fig. 6, a second part of the light beam emitted by the light source 1 is directed to the second reflecting surface 2b, reflected by the second reflecting surface 2b, and then directed to the lens 3, after being refracted by the lens 3, it is emitted from the light emitting surface 3a of the lens 3, forming The light shape of the broadened area B. In this embodiment, the light from the light source 1 to the first reflective surface 2a is reflected by the first reflective surface 2a, is cut off by the cut-off line structure 8, and then radiates to the lens 3, and is refracted by the lens 3 from the light-emitting surface 3a of the lens 3 The light from the light source 1 to the second reflective surface 2b is reflected by the second reflective surface 2b, is cut off by the cut-off line structure 8, and then radiates to the lens 3, and then passes through the lens 3. After being refracted, it is emitted from the light-emitting surface 3a of the lens 3 to form a light shape of the expanded area B. Referring to Fig. 7, a third part of the light beam emitted by the light source 1 is directed to the third reflective surface 2c, is reflected by the third reflective surface 2c and then directed to the fourth reflective surface 2d, and is reflected by the fourth reflective surface 2d and directed to the lens 3. , After being refracted by the lens 3, it is emitted from the light-emitting surface 3a of the lens 3, forming a light shape of zone III C. Referring to FIG. 13 and FIG. 14, in this embodiment, the fourth reflecting surface 2d and the reflecting mirror 2 are an integral structure. As a result, the first reflective surface 2a, the second reflective surface 2b, the third reflective surface 2c, and the fourth reflective surface 2d have a relatively fixed positional relationship, and there will be no errors due to the assembly relationship between the mirror 2 and the lens 3 Therefore, it is only necessary to ensure the accuracy of the assembly between the mirror 2 and the lens 3 to ensure the accuracy of the optical system, thereby having a higher accuracy of the optical system.

Under the same luminous flux, the smaller the light diffusion angle, the more the light converges, and the higher the brightness of the light shape formed. In this embodiment, preferably, the diffusion angle of the light reflected by the first reflecting surface 2a is smaller than the diffusion angle of the light reflected by the second reflecting surface 2b, thereby effectively improving the light shape of the central area A formed by the first reflecting surface 2a. Brightness, thereby improving the road visibility of the driver.

4, in this embodiment, a step can be formed between the first reflective surface 2a and the second reflective surface 2b, the first reflective surface 2a and the second reflective surface 2b can be connected, and the first reflective surface 2a and the second reflective surface 2b can be connected. There is a step difference between the reflective surface 2a and the second reflective surface 2b. Thus, the first reflective surface 2a and the second reflective surface 2b are not on the same smooth surface, and the first reflective surface 2a and the second reflective surface 2b are located on different ellipsoidal surfaces, so that the first reflective surface 2a and the second reflective surface 2a are located on different ellipsoidal surfaces. After the surface 2b reflects light, different light diffusion angles can be formed, and the diffusion angle of the light reflected by the first reflection surface 2a is smaller than the diffusion angle of the light reflected by the second reflection surface 2b. The first reflective surface 2a and the second reflective surface 2b can also be connected without forming a step, but it is satisfied that the curvature of the first reflective surface 2a is greater than the curvature of the second reflective surface 2b, so that the first reflective surface 2a can also be realized. The diffusion angle of the reflected light is smaller than the diffusion angle of the light reflected by the second reflecting surface 2b. Of course, the curvature of the first reflective surface 2a and the second reflective surface 2b can also be the same. On the same smooth surface, such a reflective structure is easier to process, but the light shape of the formed central area A has a relatively low brightness.

The fourth reflective surface 2d can be any one of a flat surface, an inner concave curved surface, and an outer convex curved surface, as long as it can form a light shape of Zone III C that meets the requirements of regulations. Since the light reflected by the third reflective surface 2c needs to be reflected on the fourth reflective surface 2d and then shot to the lens 3, the light reflected by the first reflective surface 2a and the second reflective surface 2b is directly shot to the lens 3. Therefore, the third reflective surface 2c and the first reflective surface 2a, the third reflective surface 2c and the second reflective surface 2b are all located on different ellipsoidal surfaces.

Further, referring to FIG. 15 and FIG. 16, the vehicle lamp module of this embodiment further includes a blocking block 9, which is used to control the brightness of the 50L dark area D of the light shape, and the blocking block 9 can block the cut-off by the cut-off line structure 8. The previous part of the light reduces the illuminance of the 50L dark area D of the low-beam light shape to a value that meets the legal requirements, thereby achieving control of the brightness of the 50L dark area D of the light shape. The blocking block 9 may be cylindrical or slope-shaped convex. The prior art shielding blocks mostly use bumps or rectangular blocks, but the bumps will make the 50L dark area a dark spot, which is relatively abrupt; the rectangular block will cause another inflection point besides the original inflection point to appear near the cut-off line. When the inflection point is captured by the light distribution, it is easy to catch the inflection point by mistake and affect the light distribution effect. Therefore, the blocking block 9 adopts cylindrical or slope-shaped protrusions, which can avoid the phenomenon of abrupt light shape or misappropriation of the inflection point.

The blocking block 9 and the reflecting mirror 2 can also be an integral structure, so that the cut-off line structure 8, the blocking block 9 and the reflecting mirror 2 have a relatively fixed positional relationship. The assembly relationship causes errors, so it is only necessary to ensure the assembly accuracy between the mirror 2 and the lens 3 to ensure the accuracy of the optical system.

Preferably, the fourth reflecting surface 2d, the cut-off line structure 8, and the blocking block 9 are integrated with the reflecting mirror 2 as an integral structure. Then, the positional relationship of the first reflecting surface 2a, the second reflecting surface 2b, the third reflecting surface 2c, the fourth reflecting surface 2d, the cut-off line structure 8 and the blocking block 9 are all fixed, which will not be caused by the reflecting mirror 2 and the lens 3. The assembly relationship between the two leads to errors, and it is only necessary to ensure the assembly accuracy between the mirror 2 and the lens 3 to ensure the accuracy of the optical system.

The reflective structure of this embodiment can realize low beam as well as high beam. When the reflective structure is applied to the main low beam, the shape of the cut-off line structure 8 is the same as the cut-off line shape of the low-beam light shape, which has a step difference (see FIG. 16). When the reflective structure is applied to the auxiliary low beam, the shape of the cut-off line structure 8 can be smooth without step difference, or it can be the same shape as the cut-off line shape of the low beam shape. When the reflective structure is applied to the high beam, the shape of the cut-off line structure 8 can be set according to the shape of the lower boundary of the high beam shape.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and substitutions can be made. These improvements and substitutions It should also be regarded as the protection scope of the present invention.

Claims (16)

1. A vehicle lamp module, characterized by comprising a reflector (2) and a lens (3), the front end of the reflector (2) is provided with a reflector connecting portion (21), and the rear of the lens (3) The end is provided with a lens connecting portion (31), and the mirror connecting portion (21) is matedly connected with the lens connecting portion (31), so that the reflecting mirror (2) and the lens (3) are relatively fixed.
2. The vehicle lamp module according to claim 1, further comprising a circuit board (4), the circuit board (4) is provided with a positioning hole (41), and the rear end of the reflector (2) A positioning pin (23) is provided for inserting and fitting with the positioning hole (41).
3. The vehicle lamp module according to claim 1, wherein the reflector (2) comprises a first reflecting surface (2a), a second reflecting surface (2b) and a third reflecting surface (2c), and the The vehicle lamp module also includes a fourth reflecting surface (2d), the first reflecting surface (2a) is used to form the light shape of the central area (A), and the second reflecting surface (2b) is used to form the widening area (B). ) Light shape, the third reflecting surface (2c) and the fourth reflecting surface (2d) are used to jointly form the light shape of zone III (C), the fourth reflecting surface (2d) and the reflecting mirror ( 2) It is an integrated structure.
4. The vehicle lamp module according to claim 1 or 3, further comprising a cut-off line structure (8) for forming a light-shaped cut-off line (E), the cut-off line structure (8) and the The reflecting mirror (2) is an integrated structure.
5. The vehicle lamp module according to claim 1 or 3, further comprising a shielding block (9) for controlling the brightness of the 50L dark area (D) of the light shape, the shielding block (9) and the The reflecting mirror (2) is an integrated structure.
6. The vehicle lamp module according to claim 3, wherein the third reflective surface (2c) and the first reflective surface (2a), the third reflective surface (2c) and the second reflective surface (2c) The reflecting surfaces (2b) are all located on different ellipsoid surfaces.
7. The vehicle lamp module according to claim 1, wherein the radius of curvature of the lens (3) is R, the height of the lens (3) is H and satisfies: H≦4R/3.
8. A vehicle lamp module, characterized in that it comprises a reflector (2) and a lens (3), and the reflector (2) includes a first reflecting surface (2a), a second reflecting surface (2b) and a third reflecting surface. Surface (2c), the vehicle lamp module further includes a fourth reflecting surface (2d), the first reflecting surface (2a) is used to form the light shape of the central area (A), and the second reflecting surface (2b) Used to form the light shape of the expanded area (B), the third reflective surface (2c) and the fourth reflective surface (2d) are used to jointly form the light shape of the area III (C), and the fourth reflective surface (2d) ) And the reflecting mirror (2) as an integral structure.
9. The vehicle lamp module according to claim 8, further comprising a cut-off line structure (8) for forming a light-shaped cut-off line (E), the cut-off line structure (8) and the reflector (2) It is an integrated structure.
10. The vehicle lamp module according to claim 8, further comprising a blocking block (9) for controlling the brightness of the 50L dark area (D) of the light shape, the blocking block (9) and the reflecting mirror (2) It is an integrated structure.
11. The vehicle lamp module according to claim 8, wherein the third reflective surface (2c) and the first reflective surface (2a), the third reflective surface (2c) and the second The reflecting surfaces (2b) are all located on different ellipsoid surfaces.
12. The vehicle lamp module according to claim 8, wherein the radius of curvature of the lens (3) is R, and the height of the lens (3) is H and satisfies: H≦4R/3.
13. A reflective structure, characterized by comprising a mirror (2) and a cut-off line structure (8), the cut-off line structure (8) is used to form a light-shaped cut-off line (E), and the cut-off line structure (8) ) And the reflecting mirror (2) as an integral structure.
14. The reflective structure according to claim 13, wherein the reflective mirror (2) comprises a first reflective surface (2a), a second reflective surface (2b) and a third reflective surface (2c), and the reflective structure It also includes a fourth reflective surface (2d), the first reflective surface (2a) is used to form the light shape of the central area (A), and the second reflective surface (2b) is used to form the light shape of the expanded area (B), The third reflecting surface (2c) and the fourth reflecting surface (2d) are used to jointly form the light shape of zone III (C), and the fourth reflecting surface (2d) is integrated with the reflecting mirror (2) The overall structure of the setting.
15. The reflective structure of claim 14, wherein the third reflective surface (2c) and the first reflective surface (2a), the third reflective surface (2c) and the second reflective surface (2b) All are located on different ellipsoid surfaces.
16. The reflective structure according to claim 13, further comprising a blocking block (9) for controlling the brightness of the 50L dark area (D) of the light shape, the blocking block (9) and the reflecting mirror (2) ) Is an integrated structure.

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