Lens, low beam module and vehicle lamp

Abstract

The utility model discloses a lens, low beam module and car light. The utility model discloses a low refracting unit and support unit of integral structure. The positioning mode to lens is improved to eliminate the light type deviation caused by thermal deformation, and the refracting unit and support unit of integral structure have low assembly difficulty, high assembly efficiency, adopt multiple connection modes including clamping and fastener connection etc. with other components of low beam module, improve the precision and efficiency of assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting, and more specifically, to a lens, a low beam module, and a vehicle lamp. Background Technology

[0002] Vehicle lighting includes a lens, a decorative frame, a light source, and a heat sink. The lens is positioned by the decorative frame. Over time, the lens can deform due to heat, causing a deviation in the beam pattern. This thermal deformation can also affect the connection between the lens and the decorative frame, leading to further deviations in the beam pattern.

[0003] Referring to CN205655206U, a vehicle lighting device is characterized by including a lamp housing, a heat dissipation structure, a decorative frame, a lens structure, an LED structure, and a dimming screw. The heat dissipation structure is located and positioned within the lamp housing. A mounting surface is provided at the upper end of the heat dissipation structure, and support positions are provided on both sides of the heat dissipation structure. The lower end of the heat dissipation structure is located outside the lower opening of the lamp housing. The decorative frame is located and positioned at the upper opening of the lamp housing, and abutment positions are provided on both sides of the decorative frame. The lens structure is located within the lamp housing, and rotating shafts are provided on both sides of the lens structure. A swing structure is provided on the rotating shafts, and the two rotating shafts are respectively located between the corresponding support positions and abutment positions and are rotatable. The LED structure is located on the mounting surface, and the light source of the LED structure is located below the lens structure. The dimming screw is rotatably mounted on the lamp housing, and the dimming screw engages with the swing structure. The rotation of the dimming screw drives the rotating shafts to rotate, thereby causing the lens structure to swing.

[0004] This application aims to provide a superior method for positioning lenses, thereby eliminating optical pattern deviation caused by thermal deformation. Utility Model Content

[0005] This invention overcomes the shortcomings of the prior art and provides a lens, a low beam module, and a vehicle lamp. It can improve the positioning method of the lens, thereby eliminating the deviation of the light pattern caused by thermal deformation.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A lens comprising a refractive unit and a support unit of one integrated structure.

[0008] Preferably, the support unit is a ring-shaped frame with open ends, and the refraction unit has at least two sides connected to the inner wall of the support unit.

[0009] A low beam module includes a first lens, a decorative frame, a reflector, a beam pattern baffle, a PCB, and a heat sink, wherein the first lens is the lens described above.

[0010] Compared to existing low beam modules, this application provides a more comprehensive and richer set of support units for the external refraction unit, thereby achieving better connection effects. This effectively resists the light pattern shift caused by lens thermal deformation and the impact of thermal deformation on the connection methods.

[0011] Preferably, the first lens and the decorative frame are snap-fitted together, the refractive unit is provided with a hook along a first direction and / or a second direction, and the inner wall of the decorative frame is provided with a sleeve, with the hook and the sleeve snap-fitted together.

[0012] Preferably, the decorative frame, the first lens, and the heat sink are connected by fasteners.

[0013] Preferably, the support unit is a ring-shaped frame with open ends and a radially extending support skirt at the bottom. The support skirt is connected to the heat sink by fasteners.

[0014] Preferably, guide posts are provided on both ends of the supporting skirt, and guide holes are provided on both the radiator and the decorative frame, with the guide posts inserted into the guide holes.

[0015] Preferably, the guide posts are arranged diagonally on the support skirt.

[0016] Preferably, the light pattern baffle is mounted on the PCB or on the refraction unit.

[0017] A vehicle headlight includes a low beam module as described above, wherein a low beam source and a high beam source are provided on a PCB, and the low beam source and the high beam source are disposed on the same PCB or different PCBs.

[0018] Preferably, it also includes a second lens, in which the light path of the near light source is refracted by the refraction unit and enters the second lens, and the light path generated by the far light source is directly entered into the second lens.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) The refractive unit (lens) used to refract light is integrated with the support unit, and the connection structure will not cause the light pattern to shift due to thermal deformation;

[0021] (2) The integrated refraction unit and support unit are easy to assemble and have high assembly efficiency;

[0022] (3) Provides multiple connection methods, including snap-fit ​​and fastener connection, to improve assembly accuracy and efficiency;

[0023] (4) The high beam and low beam can be on the same plane or on different planes. The integrated structure of the refraction unit (lens) and the support unit has good scalability and versatility. Attached Figure Description

[0024] Figure 1 It is one embodiment of a lens;

[0025] Figure 2 This is another embodiment of the lens;

[0026] Figure 3 yes Figure 2 A schematic diagram of the lens from another angle;

[0027] Figure 4 This is an exploded view of one embodiment of the low beam module;

[0028] Figure 5 These are exploded views and enlarged partial views of another embodiment of the low beam module;

[0029] Figure 6 yes Figure 5 Cross-sectional view of the embodiment;

[0030] Figure 7 This is a schematic diagram of the low beam and high beam light sources on the same plane;

[0031] Figure 8 This is a schematic diagram showing that the low beam and high beam sources are not on the same plane;

[0032] In the picture:

[0033] 1. Refraction unit 2. Support unit 3. First lens 4. Decorative frame 5. Reflector bowl 6. Beam pattern baffle 7. PCB 8. Heat sink 9. Second lens 10. Positioning protrusion 11. Notch 12. Cantilever beam 12. Slot 13. Snap protrusion 14. Support skirt 15. Guide post 16. Guide hole 17. Low beam optical path 18. High beam optical path 19. Detailed Implementation

[0034] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present disclosure, and do not specifically refer to any component or element in the present disclosure, and should not be construed as a limitation to the present disclosure.

[0038] In the present disclosure, terms such as "fixed connection", "connected", "connected to" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For those related scientific research or technical personnel in the field, the specific meanings of the above terms in the present disclosure can be determined according to specific situations, and should not be construed as a limitation to the present disclosure.

[0039] Embodiment:

[0040] Refer Figure 1 As shown, a lens includes a refractive unit 1 and a support unit 2 with an integral structure. The refractive unit 1 and the support unit 2 are integrally formed by the method of integral injection molding. The positioning is achieved by the integrity of the refractive unit 1 and the support unit 2 and the relatively larger contact area of the support unit 2 with respect to the refractive unit 1 and other contact components, so as to achieve better optical accuracy and reduce the assembly difficulty. Refer Figure 2 As shown, in some embodiments, the refractive unit 1 and the support unit 2 are injection molded into one body by a two-color injection molding process. The refractive unit 1 is made of a high-transparency material, and the support unit 2 is made of a high-strength material. The support unit 2 is a frame body surrounded in a ring shape, with both ends of the frame body open, and at least two sides of the refractive unit 1 are connected to the inner wall surface of the support unit.

[0041] Refer Figure 4 As shown, a low beam module includes a first lens 3, a decorative frame 4, a reflector bowl 5, a light pattern baffle 6, a PCB 7 and a radiator 8. Among them, the first lens 3 is the lens as described above. The low beam module generates light through the light source on the PCB 7, reflects and converges the light by using the reflector bowl 5, and the light is emitted outward through the first lens 3. The radiator 8 is adhered to the PCB 7 for transferring heat and cooling the PCB 7 to prevent the PCB 7 from overheating and failing. The light pattern baffle 6 is used to block part of the light to form a cut-off line of the light pattern.

[0042] The first lens 3 and the decorative frame 4 are snap-connected. The first lens 3 includes a refractive unit 1 and a support unit 2. The refractive unit 1 is provided with hooks along the first direction and / or the second direction, and the inner wall surface of the decorative frame 4 is provided with a socket, and the hooks and the socket are snap-connected. The first direction and the second direction are orthogonally arranged. The support unit 2 is connected to the decorative frame 4 in a snap-fastening form.

[0043] For the first lens 3, its support unit 2 is an annular ring body, and the ring body is rectangular. Both ends of the refraction unit 1 in the length direction are connected to the inner wall surface of the support unit 2. Both ends of the support unit 2 in the length direction extend upward to form support arms, and the top of the support arms has a notch 11. The notch 11 is used to position the second lens 9. Light passes through the first lens 3 and the second lens 9 to form a low beam light pattern. Matching the notch 11 at the top of the support arm, the second lens 9 is provided with a positioning bump 10 at the corresponding position, and the positioning bump 10 is snapped into the notch 11. The decorative frame 4 is press-fitted on the second lens 9 to complete the positioning of the second lens 9.

[0044] As shown Figure 6 in the figures, the specific setting of the aforementioned snap structure is as follows: In the first direction, suspension beams 12 are provided at both ends of the support unit 2, and the ends of the suspension beams 12 are provided with guiding wedge angles. The decorative frame 4 is provided with a clamping groove 13 at the corresponding position, and the guiding wedge angles are snapped into the clamping groove 13 after forced deformation. Optionally, in the second direction, snap bumps 14 are provided on both sides of the support unit 2, and the inner wall surface of the decorative frame 4 is provided with suspension beams 12. The ends of the suspension beams 12 are provided with guiding wedge angles, and the snap bumps 14 are engaged with the suspension beams 12 after the guiding wedge angles are forced to deform.

[0045] As shown Figure 3 and Figure 5 in the figures, in some other embodiments, the decorative frame 4, the first lens 3 and the radiator 8 are connected by fasteners. The support unit 2 is a frame body enclosing an annular shape, and both ends of the frame body are open. The bottom of the frame body is provided with a support skirt 15 extending radially. The support skirt 15 is in contact with the radiator 8, and the support skirt 15 and the radiator 8 are connected by fasteners. In a further embodiment, guiding columns 16 are provided on both end faces of the support skirt 15, and guiding holes 17 are provided on both the radiator 8 and the decorative frame 4. The guiding columns 16 are inserted into the guiding holes 17. Among them, the guiding columns 16 are arranged diagonally on the support skirt 15. The guiding columns 16 are thinner at the top and thicker at the bottom, which is used for convenient installation guidance and improves the assembly efficiency. The upward side of the support skirt 15 passes through the decorative frame 4 to achieve pre-positioning; the downward side of the support skirt 15 passes through the radiator 8 to achieve pre-positioning.

[0046] The light pattern baffle 6 is installed on the PCB 7 by fasteners. In some other embodiments, the light pattern baffle 6 is directly in contact with the refraction unit 1. In the described embodiments, the light incident surface of the refraction unit 1 close to the light source is a plane, and the other surface, i.e., the light exit surface, is a curved surface. The light pattern baffle 6 is in contact with the light incident surface of the refraction unit 1. The light pattern baffle 6 is in contact with one side of the refraction unit 1 in the length direction. Near the edge of the other side, the light pattern baffle 6 is provided with a protruding arc edge for forming a cut-off line. Both ends of the light pattern baffle 6 in the width direction are snap-connected to the refraction unit 1 by snap members. The light pattern baffle 6 is provided with a plurality of guiding holes, and the light incident surface of the refraction unit 1 is provided with guiding columns, and the guiding columns are inserted into the guiding holes.

[0047] A vehicle lamp includes a low beam module as described above. The PCB 7 is provided with a low beam light source and a high beam light source, and the low beam light source and the high beam light source are arranged on the same PCB 7 or different PCBs 7. An included angle is provided between the PCB 7 and the light incident surface, and the angle of the included angle is greater than 0 degrees and less than 90 degrees.

[0048] Refer Figure 8 As shown, for the design scheme where both the low beam light source and the high beam light source are located on the same PCB 7, the low beam light path 18 is refracted by the refraction unit 1 and enters the second lens 9, and the high beam light path 19 directly enters the second lens 9. The refraction unit 1 adjusts its position relative to the support unit 2 according to the relative position relationship between the low beam light source and the high beam light source. In this embodiment, three lamp beads or lamp bead groups are provided, where the middle one is the low beam light source, and the high beam light sources are symmetrically arranged on both sides. According to the arrangement direction of the low beam light source and the high beam light source, therefore, the refraction unit 1 is located at the middle position of the support unit 2.

[0049] Refer Figure 7 As shown, for the design scheme where the low beam light source and the high beam light source are located on different PCBs 7, the low beam light path 18 is refracted by the refraction unit 1 and enters the second lens 9, and the high beam light path 19 directly enters the second lens 9. For the design scheme where the low beam light source and the high beam light source are located on different PCBs 7, the radiator 8 is formed with a triangular prism or a prism with a trapezoidal cross-section. The two PCBs 7 are respectively fitted to the two hypotenuses of the prism. Along the perpendicular direction of the two hypotenuses, the refraction unit 1 is located on the side close to the low beam light source. In this scheme, the refraction unit 1 is connected to the support unit 2 at three sides.

[0050] The above embodiments are only the preferred solutions of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A lens, characterized in that, It includes a refractive unit and a support unit with an integral structure; the support unit is a frame forming a ring, with open ends, and the refractive unit has at least two sides connected to the inner wall of the support unit.

2. A low beam module, characterized in that, It includes a first lens, a decorative frame, a reflector bowl, a light pattern baffle, a PCB, and a heat sink, wherein the first lens is the lens as described in claim 1.

3. A low beam module according to claim 2, characterized in that, The first lens and the decorative frame are snapped together. The refractive unit is provided with a hook along the first direction and / or the second direction. The inner wall of the decorative frame is provided with a sleeve. The hook and the sleeve are snapped together.

4. A low beam module according to claim 3, characterized in that, The decorative frame, the first lens, and the heat sink are connected by fasteners.

5. A low beam module according to claim 4, characterized in that, The bottom of the frame is provided with a radially extending support skirt, which is connected to the heat sink by fasteners.

6. A low beam module according to claim 5, characterized in that, Guide posts are provided on both ends of the supporting skirt, and guide holes are provided on both the radiator and the decorative frame. The guide posts are inserted into the guide holes.

7. A low beam module according to claim 2, characterized in that, The light pattern baffle is mounted on the PCB or on the refraction unit.

8. A vehicle headlight, characterized in that, The module includes the low beam module as described in any one of claims 2 to 7, wherein the PCB is provided with a low beam light source and a high beam light source, and the low beam light source and the high beam light source are disposed on the same PCB or different PCBs.

9. A vehicle light according to claim 8, characterized in that, It also includes a second lens, in which the light from the near beam source is refracted by the refraction unit and enters the second lens, while the light from the far beam source enters the second lens directly.

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