Light type baffle with multiple reflecting surfaces, lens module and vehicle lamp

Abstract

The multi-reflecting-surface light type baffle plate at least comprises a first reflecting surface and a second reflecting surface, the first reflecting surface and a reflecting mirror are oppositely arranged, so that part of light rays reflected by the reflecting mirror can reach the reflecting mirror again after being reflected by the first reflecting surface; and the second reflecting surface is not opposite to the reflecting mirror, so that part of light reflected to the second reflecting surface by the reflecting mirror can be reflected to the lens. After the light is reflected by the reflector, part of the light can irradiate the first reflecting surface, and part of the light reflected by the first reflecting surface is reflected to the reflector again, reaches the second reflecting surface after being reflected by the reflector, enters the lens after being reflected by the second reflecting surface, and can be used for irradiating a region III or above or serving as supplement of passing light. Even if the thickness of the light type baffle is increased, the light reflection efficiency cannot be greatly reduced, the light utilization rate of the light source is improved, more types of light type baffles can be designed according to needs, and even the thickness of the light type baffle can be increased according to needs.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle lamp parts, and in particular relates to a light-shaped baffle with multiple reflective surfaces, a lens module and a vehicle lamp. Background Art

[0002] As the development of the automobile industry gradually matures and stabilizes, the headlight modules are becoming more and more diversified. In terms of the comprehensive performance of the headlight modules, customers have put forward more and higher requirements, such as light shape effect, module manufacturing cost and service life. As one of the headlight modules, the reflective headlight module uses a reflector as the optical element of the headlight module, and has very high requirements for the positioning and installation accuracy between the components. Among them, the coordination between the reflector and the light baffle determines whether the low beam light type produced by the reflective headlight module meets the regulations. The reflective headlight module usually includes the main components such as the radiator, PCB board, light source, reflector, light baffle, bracket, lampshade, lens, etc. The assembly accuracy between the components is one of the difficulties in designing a reflective headlight module that meets the regulations. Therefore, R&D personnel will try to reduce the number of components as much as possible. Every time a component is reduced, an assembly process is reduced. In addition, since the light emitted by the light source has a certain divergence, the direction of some light is difficult to control. How to use these lights efficiently is also a technical problem in this field.

[0003] U.S. Patent US20180112844A1 discloses a vehicle lamp, which also claims protection for a reflective vehicle lamp module, which includes a reflector, a sunshade, a circuit board and a radiator. The radiator is provided with a locating pin, and the circuit board and the reflector are respectively provided with a locating hole for the locating pin to pass through. The locating pin and the locating hole cooperate to position the three. The sunshade is equivalent to a light-shaped baffle and is welded on the circuit board, thereby affecting the light-shading effect. The sunshade also does not take into account the issue of light utilization.

[0004] Chinese patent CN201922128154.X discloses a headlight module, headlight and vehicle. With the circuit board as the reference, the sunshade and the reflector are respectively directly positioned with the circuit board, so as to achieve accurate and good positioning between the headlight optical element system composed of the circuit board, the sunshade and the reflector, and avoid the position error caused by the indirect positioning between the optical elements caused by the radiator as a positioning member, so as to ensure the light shape effect and improve the module performance. At the same time, in order to cooperate with the positioning structure, the sunshade, the circuit board and the radiator are connected by riveting to ensure reliable connection. In addition, the utility model also has a dimming structure, which can adjust the relative position of multiple light shapes in the up and down directions, so that each light shape meets the regulatory requirements and ensures the light shape effect, but the sunshade does not consider the problem of light utilization. Utility Model Content

[0005] In view of the above-mentioned prior art, the purpose of the present utility model is to provide a light-shaped baffle with multiple reflective surfaces, a lens module and a vehicle lamp.

[0006] The technical solution of the utility model is implemented as follows: a reflector and a light source are provided on one side of a multi-reflective surface light baffle, and the light baffle includes at least a first reflective surface and a second reflective surface, the first reflective surface can receive and reflect the light from the reflector or the light source to form a first light; the second reflective surface can receive and reflect the light reflected by the reflector to form a second light, wherein the light reflected by the reflector includes a third light directly received and reflected by the light source and a fourth light received and reflected by the first light.

[0007] The beneficial effects of such a design are as follows: the light source can directly illuminate the first reflecting surface or reach the first reflecting surface through reflection by the reflector, a portion of the light reaching the first reflecting surface can be directly reflected to the lens, in some cases, after being reflected by the reflector, a portion of the light can illuminate the first reflecting surface, after being reflected by the first reflecting surface, a portion of the light is reflected again to the reflector, after being reflected by the reflector, it reaches the second reflecting surface, and after being reflected by the reflector, it enters the lens, which can be used to illuminate above Zone III or as a supplement to low beam, and even if the thickness of the light-type baffle is increased, the efficiency of light reflection will not be greatly reduced, and the utilization rate of the light from the light source can be improved. More types of light-type baffles can be designed as needed, and the thickness of the light-type baffles can even be thickened as needed. In particular, the use of metal materials to make the light-type baffles can improve the reflective performance, and it also has a heat dissipation function after being fixed to the radiator.

[0008] Furthermore, the first reflecting surface is arranged relative to the reflecting mirror so that part of the light reflected by the reflecting mirror can be reflected by the first reflecting surface and then reach the reflecting mirror again. The second reflecting surface is not arranged relative to the reflecting mirror so that part of the light reflected by the reflecting mirror to the second reflecting surface can be reflected to the lens. This design makes light utilization more efficient.

[0009] Furthermore, the light-shaped baffle and the heat sink are fixed together to form an integrated structure, so that the light-shaped baffle can be positioned more accurately and installed more conveniently, thus saving installation time of the overall structure.

[0010] Furthermore, the light-shaped baffle and the heat sink are integrally die-casted with the same material, so that the light-shaped baffle also has a heat dissipation function, which makes the heat dissipation effect better, and the metal material has a certain reflectivity after polishing, so there is no need to electroplate the metal material separately on the surface, which can simplify the processing technology, save processing time, and improve production efficiency.

[0011] Furthermore, the radiator is provided with an upwardly inclined mounting plane, so that the circuit board and the reflector can be arranged upwardly inclined, and the light source protrudes a certain position relative to the circuit board. In this way, it is difficult to ensure that all the light sources are located on one side of the optical axis of the lens. After the tilt, all the light can be emitted from a certain height, and a clear light cut-off line can be formed after passing through the light-shaped baffle.

[0012] Furthermore, the first reflecting surface is a plane, and the first reflecting surface is at a certain angle to the mounting plane of the radiator. To ensure that a horizontal cut-off line can be formed, the outline of the light-blocking plate should be in a horizontal position, and the mounting plane needs to be tilted at a certain angle. Considering the reflection effect of the first reflecting surface, the first reflecting surface needs to be at a certain angle to the mounting plane.

[0013] Furthermore, the angle between the first reflecting surface and the mounting plane ranges from 100° to 170°, which can meet the needs of different reflection angles of different vehicle lamps.

[0014] Furthermore, the first reflecting surface is parallel to the optical axis of the lens, so that the light spot can form a good horizontal cutoff line and will not be affected even if the light source is offset within a certain range.

[0015] Furthermore, the first reflecting surface is a curved surface, so that light with a certain convergence can be formed according to specific needs.

[0016] The lens module comprises the above-mentioned light-shaped baffle and heat sink. The light-shaped baffle and heat sink are easy to assemble, have better heat dissipation effect, and can form a horizontal cutoff line.

[0017] The headlights, including the lens module mentioned above, can make the headlights brighter, more light efficient and with better heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of the installation of the reflector, circuit board, light-shaped baffle and heat sink of Example 1;

[0019] Figure 2 A schematic diagram of the installation of a reflector, a circuit board, a light-shaped baffle and a heat sink in Example 1;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross section at the middle AA position;

[0021] Figure 4 A three-dimensional schematic diagram of the installation of the reflector, circuit board, light-shaped baffle and heat sink of Example 2;

[0022] Figure 5 It is a cross-sectional schematic diagram of Example 2;

[0023] Figure 6A three-dimensional schematic diagram of the installation of the reflector, circuit board, light-shaped baffle and heat sink of Example 3;

[0024] Figure 7 This is a half-section schematic diagram of Example 3. DETAILED DESCRIPTION

[0025] As required, detailed embodiments of the present invention are disclosed herein, but it should be understood that the disclosed embodiments are only exemplary of the present invention, and the present invention may be implemented in different and alternative forms. The drawings are not necessarily drawn to scale, and certain features may be exaggerated or reduced to show the details of specific components. Therefore, the specific structural and functional details disclosed herein should not be understood as having a limiting meaning, but only as a representative basis to teach those skilled in the art to adopt the present invention differently. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a reflector 3 and a light source 10 are provided on one side of a multi-reflecting light-shaped baffle 4, which includes at least a first reflecting surface 1 and a second reflecting surface 2. The first reflecting surface 1 can receive and reflect the light from the reflector 3 or the light source 10 to form a first light 41; the second reflecting surface 2 can receive and reflect the light reflected by the reflector 3 to form a second light 42, wherein the light reflected by the reflector 3 includes a third light 43 directly received and reflected from the light source and a fourth light 44 received and reflected from the first light 41. The light-shaped baffle 4 is located between the reflector 3 and the lens 6, the first reflecting surface 1 can receive and reflect the light from the reflector 3 or the light source 10, and the second reflecting surface 2 can receive the light reflected by the reflector 3 and reflect most of the light reflected by the reflector 3 to the second reflecting surface 2 to the lens 6.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the first reflecting surface 1 and the reflecting mirror 3 are arranged relative to each other so that part of the light reflected by the reflecting mirror 3 can reach the reflecting mirror 3 again after being reflected by the first reflecting surface 1. The relative arrangement can make a large amount of light be reflected between the first reflecting surface 1 and the reflecting mirror 3. The first reflecting surface 1 and the reflecting mirror 3 are approximately regarded as planes, and the first reflecting surface 1 and the reflecting mirror 3 are in a parallel or nearly parallel position for a better effect, that is, the plane angle is less than 45°. The second reflecting surface 2 and the reflecting mirror 3 are not arranged relative to each other so that part of the light reflected by the reflecting mirror 3 to the second reflecting surface 2 can be reflected to the lens 6, that is, the plane angle is greater than 45°.

[0028] Embodiment 1:

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the light-shaped baffle 4 and the heat sink 5 are manufactured separately, and the light-shaped baffle 4 is provided with a mounting screw hole 11. The light-shaped baffle 4 and the heat sink 5 are fixed together by screws to form an integrated structure. The heat sink 5 is provided with an upwardly inclined mounting plane 7, and a circuit board 8 is mounted on the mounting plane 7. A reflector 3 is mounted above the circuit board 8. The first reflective surface 1 is a plane, and the first reflective surface 1 forms a certain angle with the mounting plane 7 of the heat sink 5. The angle between the first reflective surface 1 and the mounting plane 7 is 170°. A part of the light emitted by the light source 10 is directly reflected by the reflector to the lens 6 and then emitted, a part is reflected by the reflector to the second reflective surface 2 and then emitted, and a part is reflected by the reflector 3 to the first reflective surface 1 and then reflected by the second reflective surface 2 and emitted, which can be used to irradiate above zone III. The first reflective surface 1 is parallel to the optical axis 9 of the lens 6. As a preferred embodiment, the optical axis 9 directly passes through the first reflective surface 1, and the light does not change direction when passing through the optical axis 9. Therefore, the position of the light can be determined by adjusting the position of the optical axis 9. The first reflective surface 1 can block the light below the optical axis 9, and the light spots formed in this way are all located below the optical axis 9.

[0030] Embodiment 2:

[0031] like Figure 4 and Figure 5 As shown, the light-shaped baffle 4 and the heat sink 5 are integrally formed of the same material, and are both formed by aluminum alloy die-casting. The first reflection surface 1 and the second reflection surface 2 of the light-shaped baffle 4 are polished and ground to make the surface flat, with good reflective effect, and no electroplating is required. The first reflection surface 1 is a curved surface, which can reflect most of the light to the reflector 3. The heat sink 5 is provided with an upwardly inclined mounting plane 7, on which a circuit board 8 is mounted, and a reflector 3 is mounted above the circuit board 8. From the cross-sectional position, the first reflection surface 1 and the mounting plane 7 form an angle of 115°.

[0032] Embodiment 3:

[0033] like Figure 6 and Figure 7 As shown, the light-shaped baffle 4 and the heat sink 5 are integrally formed with the same material, and are both formed by aluminum alloy die-casting. The first reflection surface 1 and the second reflection surface 2 of the light-shaped baffle 4 are polished and ground to make the surface flat and have a good reflective effect. The first reflection surface 1 is a plane, and the second reflection surface 2 is a curved surface, which can be set as a part of a sphere. The angle between the first reflection surface 1 and the mounting plane 7 is 100°. The light of the light source 10 is reflected by the reflector 3 and reaches the first reflection surface 1, and then returns to the reflector 3. The reflector 3 then reflects the light to the second reflection surface 3 and reflects it again to reach the lens 6, forming an inclined upward light, which can be used to illuminate above zone III. The heat sink 5 is provided with a plurality of ribs to increase the heat dissipation performance.

[0034] The lens module includes the above-mentioned light-shaped baffle 4 and heat sink 5 , and also includes a lens 6 , a reflector 3 and a circuit board 8 .

[0035] A vehicle lamp comprises the above-mentioned lens module.

Claims

1. A light-shaped baffle with multiple reflective surfaces, wherein a reflector (3) and a light source (10) are provided on one side of the light-shaped baffle (4), characterized in that: At least comprising a first reflecting surface (1) and a second reflecting surface (2), wherein the first reflecting surface (1) is capable of receiving and reflecting light from the reflecting mirror (3) or the light source (10) to form a first light (41); The second reflecting surface (2) is capable of receiving and reflecting the light reflected by the reflector (3) to form a second light (42), wherein the light reflected by the reflector (3) comprises a third light (43) directly received from a light source and reflected, and a fourth light (44) received from the first light (41) and reflected.

2. The multi-reflective light baffle according to claim 1, characterized in that: The first reflecting surface (1) and the reflecting mirror (3) are arranged relative to each other so that part of the light reflected by the reflecting mirror (3) can reach the reflecting mirror (3) again after being reflected by the first reflecting surface (1), and the second reflecting surface (2) and the reflecting mirror (3) are not arranged relative to each other so that part of the light reflected by the reflecting mirror (3) to the second reflecting surface (2) can be reflected to the lens (6).

3. The multi-reflective light baffle according to claim 1, characterized in that: The light-shaped baffle (4) and the heat sink (5) are fixed together to form an integrated structure or are integrally die-cast.

4. The multi-reflective light baffle according to claim 1, characterized in that: The radiator (5) is provided with a mounting plane (7) that is inclined upward.

5. The light-shaped baffle with multiple reflective surfaces according to claim 4, characterized in that: The first reflecting surface (1) is a plane, and the first reflecting surface (1) forms a certain angle with the installation plane (7) of the radiator (5).

6. The light-shaped baffle with multiple reflective surfaces according to claim 5, characterized in that: The angle between the first reflecting surface (1) and the mounting plane (7) is in the range of 100°-170°.

7. The light-shaped baffle with multiple reflective surfaces according to claim 1, characterized in that: The first reflection surface (1) is parallel to the optical axis (9) of the lens (6).

8. The light-shaped baffle with multiple reflective surfaces according to claim 1, characterized in that: The first reflecting surface (1) is a curved surface.

9. A lens module, characterized in that: The method comprises at least the light-shaped baffle (4) and the heat sink (5) as described in any one of claims 1 to 8.

10. A vehicle lamp, characterized in that: At least includes the lens module described in claim 9.

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