Micro-lens projection device and vehicle lamp thereof

Abstract

The utility model discloses a micro-lens projection device and an automobile lamp thereof, and belongs to the technical field of automobiles and two-wheeled vehicles or other motor / non-motor vehicles. According to the device, a lens assembly and a PCB are fixedly connected and then installed in a shell, positioning holes in the PCB are fixedly connected with positioning columns on a heat dissipation assembly, after the shell and the heat dissipation assembly are sealed into a whole through a sealing ring, an adjusting assembly is connected with the heat dissipation assembly, and the lens assembly is adjusted through the adjusting assembly to obtain a larger projection angle range; a plurality of heat dissipation columns are uniformly distributed on the heat dissipation assembly, heat generated by the PCB is radiated to surrounding air by the heat dissipation columns, and the heat is conducted out, so that the heat dissipation performance of the micro-lens projection device is effectively improved, plastic parts and electronic components are prevented from being damaged due to overheating of the micro-lens projection device, the heat dissipation performance is effectively improved, and the service life of the micro-lens projection device is prolonged. Therefore, the pattern projected to the ground by the micro-lens projection device is visible under the ambient light to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, two-wheel vehicles or other motorized / non-motorized vehicles, and more specifically, to a microlens projection device and a vehicle lamp thereof. Background Art

[0002] Existing microlens array (MLA) modules are generally used for the function of automotive welcome light carpets and are installed at the chassis or side skirts of automobiles. Its main components include: a PCB containing 1 or 4 LEDs, a collimating lens, a microlens array (MLA), an MLA mounting bracket, a rear cover, and a two-color housing (black + transparent). Thus, the light emitted by the LED passes through the collimating lens, and the light passing through it is refracted into parallel light, and then combined by the MLA to project a specific pattern onto the ground.

[0003] However, in the prior art, due to the limitation of spatial dimensions, the mainstream MLA modules have a small projection angle range, and the MLA modules are also limited by thermal management, usually with low illuminance. The pattern projected onto the ground is only visible under relatively dim ambient light, and the application scenario is easily limited, unable to meet the market demand for high-brightness welcome light carpets. Summary of the Utility Model

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the defects in the prior art, the utility model provides a microlens projection device and a vehicle lamp thereof. By setting heat dissipation columns, the heat generated by the microlens array device is radiated to the surrounding air, and then the heat is conducted out, so that the microlens array device is not limited by thermal management. At the same time, the heat dissipation component is connected to the adjustment component, and the lens component is adjusted through the adjustment component to obtain a larger projection angle range.

[0006] 2. Technical Solutions

[0007] The object of the utility model is achieved by the following technical solutions.

[0008] A microlens projection device includes a housing, a lens component, and a PCB circuit board. The microlens projection device further includes a sealing ring, a heat dissipation component, and an adjustment component;

[0009] The housing includes a connecting plate and a protruding portion provided at one end of the connecting plate;

[0010] A number of positioning posts are provided on the lens component and the heat dissipation component, and a number of positioning holes are provided on the PCB circuit board;

[0011] After the positioning posts on the lens component are fixedly connected to the positioning holes on the PCB circuit board, they are installed in the protruding portion of the housing;

[0012] The positioning holes on the PCB circuit board are fixedly connected to the positioning posts on the heat dissipation component;

[0013] The sealing ring seals the housing and the heat dissipation component as a whole;

[0014] The adjusting component is connected to the heat dissipation component, and the projection angle range of the lens component is adjusted through the adjusting component.

[0015] Further, the heat dissipation component is composed of a bottom plate, and a plurality of heat dissipation columns are uniformly distributed on one side surface of the bottom plate.

[0016] Further, the microlens projection device further includes a mounting bracket, and the adjusting component is installed in the mounting bracket after being connected to the heat dissipation component.

[0017] Further, the adjusting component is composed of an adjusting nut and an adjusting bolt, and the two sides of the adjusting nut are of an outer arc structure.

[0018] Further, fixing holes are further provided on the bottom plate on the side surface where a plurality of heat dissipation columns are uniformly distributed, the fixing holes are of a U-shaped structure, and the two inner side walls of the fixing holes are of an inner arc structure.

[0019] Further, the inner arc structures of the two inner side walls of the fixing holes are engaged with the outer arc structures on both sides of the adjusting nut.

[0020] Further, a connecting frame is provided on the mounting bracket; the adjusting bolt is connected to the adjusting nut through the connecting frame, and an O-shaped washer and a lock washer are provided between the adjusting bolt and the adjusting nut; the O-shaped washer and the lock washer are used to fix the adjusting bolt and the adjusting nut on both sides of the connecting frame.

[0021] Further, the projection angle range of the lens component is adjusted through the adjusting nut.

[0022] Further, ventilation holes are formed in the other end of the connecting plate, and a waterproof and breathable film covers the ventilation holes.

[0023] A vehicle lamp, the vehicle lamp includes the microlens projection device according to any one of the above.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the advantages of the present utility model are as follows:

[0026] (1) A microlens projection device and its vehicle lamp of the present utility model, by providing a heat dissipation component, the heat dissipation columns of the heat dissipation component radiate the heat generated by the PCB circuit board in the microlens array device to the surrounding air, thereby conducting the heat out, effectively improving the heat dissipation performance of the microlens projection device, meeting the requirements of high-power modules, enabling the microlens array device to be unrestricted by thermal management, ensuring that the pattern projected onto the ground is visible under a certain level of ambient light, and having strong practicability and wide applicability.

[0027] (2) A microlens projection device and its vehicle lamp of the present utility model connect the adjusting bolt to the adjusting nut through the mounting bracket, and an O-ring gasket and a lock washer are provided between the adjusting bolt and the adjusting nut. The adjusting bolt and the adjusting nut are fixed by the O-ring gasket and the lock washer, effectively ensuring the stability of the microlens projection device. At the same time, the projection angle of the microlens projection device is also adjusted through the adjusting nut, thereby obtaining a larger projection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a perspective view of an embodiment of the present utility model;

[0029] Figure 2 is a front view of an embodiment of the present utility model;

[0030] Figure 3 is a left view of an embodiment of the present utility model;

[0031] Figure 4 is a rear view of an embodiment of the present utility model;

[0032] Figure 5 is an exploded view of an embodiment of the present utility model;

[0033] Figure 6 is a schematic diagram of the housing of an embodiment of the present utility model;

[0034] Figure 7 is a schematic diagram of the lens assembly of the present utility model;

[0035] Figure 8 is a schematic diagram of the PCB circuit board of an embodiment of the present utility model;

[0036] Figure 9 is a schematic diagram of the heat dissipation component of an embodiment of the present utility model;

[0037] Figure 10 is another perspective schematic diagram of the heat dissipation component of an embodiment of the present utility model;

[0038] Figure 11 is a schematic diagram of heat dissipation of an embodiment of the present utility model;

[0039] Figure 12Schematic diagram of the installation of the adjusting bolt in the embodiment of the present utility model;

[0040] Figure 13 It is Figure 12 The enlarged view of the structure at position A in

[0041] Figure 14 Schematic diagram of the adjustment angle in the embodiment of the present utility model.

[0042] Explanation of the reference numerals in the figure: 1. Housing; 11. Connecting plate; 12. Ventilation hole; 13. Buckle; 14. Protrusion;

[0043] 2. Lens assembly;

[0044] 3. PCB circuit board; 31. First positioning hole; 32. Second positioning hole; 33. Waterproof connector;

[0045] 4. Sealing ring;

[0046] 5. Heat dissipation assembly; 51. Bottom plate; 52. Waterproof jack; 53. Heat dissipation column; 54. Second positioning post; 55. Third positioning post; 56. Fixing hole; 57. Card slot;

[0047] 6. Waterproof breathable film;

[0048] 7. Screw; 71. Self-locking screw; 72. Self-tapping screw;

[0049] 8. Adjusting assembly; 81. Adjusting nut; 82. O-ring; 83. Locking piece; 84. Adjusting bolt;

[0050] 9. Mounting bracket; 91. First connecting piece; 92. Second connecting piece; 93. Connecting frame;

[0051] 10. Thermal grease. Detailed implementation manners

[0052] The present utility model will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0053] Embodiment

[0054] As Figures 1-5 shown, a microlens projection device provided in this embodiment includes a housing 1, a lens assembly 2, a PCB circuit board 3, a sealing ring 4, a heat dissipation assembly 5, a waterproof breathable film 6, a screw 7, an adjusting assembly 8, a mounting bracket 9, and a thermal grease 10. It should be noted that in this embodiment, the screws 7 used include self-locking screws 71 and self-tapping screws 72.

[0055] Specifically in this embodiment, as Figure 6As shown, the housing 1 is composed of a connecting plate 11 and a convex portion 14 provided on one side of the connecting plate 11. The convex portion 14 is provided at one end of the connecting plate 11. A cavity is provided inside the convex portion 14, and the lens assembly 2 is installed in the cavity of the convex portion 14 to protect the lens assembly 2 through the convex portion 14. In addition, in this embodiment, the used convex portion 14 is made of a transparent material and is used as a light-transmitting area of the microlens projection device. Clasps 13 are provided on both sides of the housing 1, and the clasps 13 are connected to the slots 57 provided on both sides of the heat dissipation assembly 5 to fix the microlens projection device. In this embodiment, preferably, one clasp 13 is provided on each side of the housing 1, and further, one slot 57 is correspondingly provided on each side of the heat dissipation assembly 5, and the clasp 13 and the slot 57 are fixedly connected. In this embodiment, the housing 1 and the heat dissipation assembly 5 are also fastened by four self-tapping screws 72. It should be noted that ventilation holes 12 are provided at the other end of the connecting plate 11, and the ventilation holes 12 and the convex portion 14 are located on the same side of the connecting plate 11. A waterproof breathable membrane 6 is covered on the ventilation holes 12. When the microlens projection device is working, the generated heat causes the air to expand, and the air can be led out through the waterproof breathable membrane 6, thereby generating a limited air circulation with the outside and preventing fog from forming on the housing 1. In addition, the waterproof breathable membrane 6 can block the intrusion of external water molecules, so that the microlens projection device can reach the IP67 protection level.

[0056] As Figure 7 shown, a number of positioning posts are provided at one end of the lens assembly 2. As Figure 8 shown, a number of positioning holes are provided on the PCB board 3. In this embodiment, after the positioning posts on the lens assembly 2 and the positioning holes on the PCB board 3 are fixedly connected, they are installed in the convex portion 14 of the housing 1. In this embodiment, preferably, four first positioning posts 21 are provided at one end of the lens assembly 2 close to the PCB board 3. Thus, the lens assembly 2 is fixedly connected to the positioning holes on the PCB board 3 through the first positioning posts 21. In addition, in this embodiment, the lens assembly 2 and the PCB board 3 are also fastened by two self-locking screws 71.

[0057] In this embodiment, a first positioning hole 31 and a second positioning hole 32 are also provided on one side surface of the PCB board 3, and the first positioning hole 31 and the second positioning hole 32 are located on the same horizontal plane. In addition, a waterproof connector 33 is also provided on the other side surface of the PCB board 3.

[0058] As Figures 9-10As shown in the figure, the heat dissipation component 5 is composed of a bottom plate 51, and a plurality of positioning posts are arranged on one side surface of the bottom plate 51. In this embodiment, a second positioning post 54 and a third positioning post 55 are arranged on one side surface of the bottom plate 51, and the second positioning post 54 and the third positioning post 55 are located on the same horizontal plane. The second positioning post 54 and the third positioning post 55 are respectively installed in the first positioning hole 31 and the second positioning hole 32 of the PCB circuit board 3. Thus, the positioning holes on the PCB circuit board 3 and the positioning posts on the heat dissipation component 5 are fixedly connected. On the side surface where the second positioning post 54 and the third positioning post 55 are arranged, a waterproof jack 52 is also arranged, and the waterproof connector 33 on the PCB circuit board 3 is fixedly installed in the waterproof jack 52.

[0059] In this embodiment, the housing 1 and the heat dissipation component 5 are also sealed as a whole through the sealing ring 4, so that the microlens projection device has a waterproof function through the sealing ring 4.

[0060] It is worth noting that in this embodiment, a plurality of heat dissipation posts 53 are evenly distributed on the other side surface of the bottom plate 51. In the prior art, for the traditional sheet-like heat dissipation structure, a die-casting manufacturing process is required. Since it requires a large demolding angle, more materials are used under the same volume, and the materials need to be pre-melted and then injected into the mold for die-casting, and more energy is consumed in the manufacturing process. In this embodiment, by arranging the heat dissipation posts 53, compared with the traditional sheet-like heat dissipation structure, under the same volume, the heat dissipation area of the heat dissipation posts 53 is larger, and a forging manufacturing process is adopted, which can effectively save materials and energy.

[0061] It should be noted that the material of the heat dissipation posts 53 is a metal material with high thermal conductivity. In this embodiment, in order to save costs, the heat dissipation posts 53 used are made of aluminum alloy material. As Figure 11 shown, during the operation of the microlens projection device, the heat generated by the PCB circuit board 3 is conducted to the heat dissipation component 5 through the thermal conductive silicone grease 10, and then the heat dissipation component 5 radiates the heat to the surrounding air through the heat dissipation posts 53 to conduct the heat out, thereby improving the heat dissipation performance of the microlens projection device.

[0062] Thus, in this embodiment, by arranging the heat dissipation component 5, the heat dissipation posts 53 of the heat dissipation component 5 radiate the heat generated by the PCB circuit board 3 in the microlens array device to the surrounding air, so as to conduct the heat out, effectively improving the heat dissipation performance of the microlens projection device, meeting the requirements of high-power modules, enabling the microlens array device not to be limited by thermal management, ensuring that the pattern projected onto the ground is visible under a certain degree of ambient light, and having strong practicability and wide applicability.

[0063] As Figures 12-13As shown, the adjustment component 8 is connected to the heat dissipation component 5, and the projection angle range of the lens component 2 is adjusted through the adjustment component 8. After the adjustment component 8 is connected to the heat dissipation component 5, it is installed in the mounting bracket 9. Specifically, the adjustment component 8 is composed of an adjustment nut 81 and an adjustment bolt 84. In this embodiment, both sides of the adjustment nut 81 are of an outer arc structure. On the bottom plate 51 on one side where a number of heat dissipation columns 53 are evenly distributed, there is also a fixing hole 56. The fixing hole 56 is of a U-shaped structure, and the two inner side walls of the fixing hole 56 are of an inner arc structure. Thus, the inner arc structures of the two inner side walls of the fixing hole 56 are engaged with the outer arc structures on both sides of the adjustment nut 81. At the same time, the loosening of the microlens projection device can be effectively avoided through the arc structure setting. It should be noted that in this embodiment, a connecting frame 93 is provided on the mounting bracket 9. The adjustment bolt 84 is connected to the adjustment nut 81 through the connecting frame 93, and an O-ring 82 and a lock washer 83 are provided between the adjustment bolt 84 and the adjustment nut 81. The adjustment bolt 84 and the adjustment nut 81 are fixed on both sides of the connecting frame 93 through the O-ring 82 and the lock washer 83. Furthermore, in this embodiment, the projection angle range of the lens component 2 can be adjusted through the adjustment nut 81.

[0064] As Figure 14 shown, the adjustment bolt 84 is installed on the fixing hole 56 through the O-ring 82 and the lock washer 83. The threaded area of the adjustment bolt 84 is screwed into the adjustment nut 81 installed on the mounting bracket 9. The fixing structures of the mounting bracket 9 and the fixing hole 56 simultaneously serve as the rotation axis, forming a device projection angle adjustment system with the adjustment nut 81. By adjusting the threaded depth of the adjustment bolt 84 screwed in, the projection angle is adjusted. In this embodiment, by adjusting the threaded depth of the adjustment bolt 84 screwed in, the lens component 2 is rotated, so that the same microlens projection device can be shared in four installation directions of 0°, 90°, 180°, and 270°, thereby obtaining a larger projection angle.

[0065] Thus, in this embodiment, the adjustment bolt 84 is connected to the adjustment nut 81 through the mounting bracket 9, and an O-ring 82 and a lock washer 83 are provided between the adjustment bolt 84 and the adjustment nut 81. The adjustment bolt 84 and the adjustment nut 81 are fixed through the O-ring 82 and the lock washer 83, effectively ensuring the stability of the microlens projection device. At the same time, the projection angle of the microlens projection device is also adjusted through the adjustment nut 81, thereby obtaining a larger projection range.

[0066] It should be noted that a first connecting piece 91 and a second connecting piece 92 are also provided on the mounting bracket 9. In this embodiment, the microlens projection device is installed at the position of the vehicle chassis or side skirt through the first connecting piece 91 and the second connecting piece 92.

[0067] This embodiment also provides a vehicle lamp, which includes the above-mentioned microlens projection device. In this embodiment, the vehicle lamp forms a projection pattern through the microlens projection device and projects it onto the ground or other application scenarios.

[0068] The present invention and its implementation manners are schematically described above. The description is not restrictive. Without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Any reference signs in the claims should not limit the claims involved. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of this creation, they shall fall within the protection scope of the present invention. In addition, the term "including" does not exclude other elements or steps, and the term "a" before an element does not exclude including "a plurality of" such elements. The plurality of elements stated in the product claims can also be implemented by one element through software or hardware. The terms such as "first" and "second" are used to represent names and do not indicate any specific order.

Claims

1. A microlens projection device, comprising a housing (1), a lens assembly (2), and a PCB circuit board (3), characterized in that, The microlens projection device further includes a sealing ring (4), a heat dissipation component (5) and an adjustment component (8); The housing (1) includes a connecting plate (11) and a protruding portion (14) provided at one end of the connecting plate (11); A number of positioning posts are provided on the lens assembly (2) and the heat dissipation component (5), and a number of positioning holes are provided on the PCB circuit board (3); After the positioning posts on the lens assembly (2) and the positioning holes on the PCB circuit board (3) are fixedly connected, they are installed in the protruding portion (14) of the housing (1); The positioning holes on the PCB circuit board (3) and the positioning posts on the heat dissipation component (5) are fixedly connected; The sealing ring (4) seals the housing (1) and the heat dissipation component (5) into a whole; The adjustment component (8) is connected to the heat dissipation component (5), and the projection angle range of the lens assembly (2) is adjusted through the adjustment component (8).

2. A microlens projection device according to claim 1, characterized in that, The heat dissipation component (5) is composed of a bottom plate (51), and a number of heat dissipation posts (53) are evenly distributed on one side surface of the bottom plate (51).

3. A microlens projection device according to claim 2, wherein The microlens projection device further includes a mounting bracket (9), and the adjustment component (8) is connected to the heat dissipation component (5) and then installed in the mounting bracket (9).

4. A microlens projection device according to claim 3, wherein, The adjustment component (8) is composed of an adjustment nut (81) and an adjustment bolt (84), and both sides of the adjustment nut (81) are of an outer arc structure.

5. A microlens projection device according to claim 4, characterized in that, A fixing hole (56) is further provided on the bottom plate (51) on the side surface where a number of heat dissipation posts (53) are evenly distributed. The fixing hole (56) is of a U-shaped structure, and the inner side walls of the fixing hole (56) are of an inner arc structure.

6. A microlens projection device according to claim 5, characterized in that, The inner arc structures of the two inner side walls of the fixing hole (56) are engaged with the outer arc structures on both sides of the adjustment nut (81).

7. The microlens projection device according to claim 6, characterized in that, A connecting frame (93) is provided on the mounting bracket (9); the adjustment bolt (84) is connected to the adjustment nut (81) through the connecting frame (93), and an O-shaped washer (82) and a lock washer (83) are provided between the adjustment bolt (84) and the adjustment nut (81); the O-shaped washer (82) and the lock washer (83) are used to fix the adjustment bolt (84) and the adjustment nut (81) on both sides of the connecting frame (93).

8. A microlens projection device according to claim 7, wherein, The projection angle range of the lens assembly (2) is adjusted through the adjustment nut (81).

9. A microlens projection device according to claim 1, wherein A ventilation hole (12) is opened at the other end of the connecting plate (11), and a waterproof and breathable film (6) is covered on the ventilation hole (12).

10. A vehicle lamp, characterized in that, The vehicle lamp includes the microlens projection device according to any one of claims 1-9.

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