Self-heating lens module and vehicle-mounted camera

Abstract

The utility model relates to a self-heating lens module and a vehicle-mounted camera. The self-heating lens module comprises a circuit board, the circuit board comprises a board body and a plurality of bonding pads, the board body is provided with an avoiding cavity, and the plurality of bonding pads are arranged outside the avoiding cavity at intervals; the lens main body is fixedly connected to the circuit board; and the heating assembly comprises a heating unit arranged in the lens main body and a connecting piece electrically connected to the heating unit, the connecting piece extends into the avoiding cavity from the heating unit and extends, and the connecting piece is welded to the bonding pad. According to the self-heating lens module, the connecting piece is inserted into the avoiding cavity, so that the positions of the connecting piece and the bonding pad of the circuit board can be positioned in an auxiliary manner, undesirable phenomena such as insufficient welding, insufficient welding, tin connection and cavities can be avoided, and the welding structure of the connecting piece and the bonding pad of the circuit board is more stable and more full in welding.

Description

Technical Field

[0001] The utility model relates to the technical field of camera self-heating, in particular to a self-heating lens module and a vehicle-mounted camera. Background Art

[0002] With the development of automotive autonomous driving technology, there are more and more cameras on vehicles. To cope with different usage environments, the functional requirements for cameras are increasing.

[0003] In some usage scenarios, affected by extremely cold weather and regions, the front end of the camera lens is prone to fogging and icing when the temperature changes suddenly, resulting in unclear lens imaging. To solve the above problems, a self-heating component is added to the existing vehicle-mounted camera module to heat the lens through the self-heating component to avoid fogging or icing at the front end of the lens.

[0004] Currently, there are mainly two ways for the self-heating component of the existing self-heating camera to conduct electricity with the circuit board: connection through a connector and connection through soldering. Among them, the soldering connection method has the advantages of saving space and low cost, while the connector connection method has a more stable structure.

[0005] In some self-heating cameras using the soldering connection method, due to certain deviations in the lengths of the flexible printed circuit board (FPC) or wire harness, the too-long flexible printed circuit board or wire harness is prone to interfere with the circuit board during soldering, and the too-short flexible printed circuit board or wire harness is prone to poor soldering phenomena such as insufficient soldering, virtual soldering, bridging, and voids during soldering. Summary of the Utility Model

[0006] Based on this, it is necessary to provide a self-heating lens module and a vehicle-mounted camera for the problems of interference, insufficient soldering, virtual soldering, bridging, voids, etc. existing in the existing self-heating camera caused by the length deviation of the flexible printed circuit board or wire harness.

[0007] A self-heating lens module includes:

[0008] A circuit board, the circuit board includes a board body and a plurality of pads, the board body is provided with an avoidance cavity, and the plurality of pads are arranged at intervals outside the avoidance cavity;

[0009] A lens body, the lens body is fixedly connected to the circuit board; and

[0010] A heating component, the heating component includes a heating unit arranged in the lens body and a connecting piece electrically connected to the heating unit, the connecting piece extends from the heating unit into the avoidance cavity and extends, and the connecting piece is soldered to the pad.

[0011] In one embodiment, the avoidance cavity is an avoidance groove recessed from the front surface of the board body, the pad is disposed on the front surface of the board body, and the connecting member is inserted into the avoidance groove.

[0012] In one embodiment, the avoidance cavity is an avoidance hole penetrating the board body, the pad is disposed on the front surface of the board body, and the connecting member is inserted into the avoidance hole.

[0013] In one embodiment, the avoidance cavity is an avoidance hole penetrating the board body, the pad is disposed on the back surface of the board body, and the connecting member passes through the avoidance hole and extends to the back surface of the board body.

[0014] In one embodiment, one side of the connecting member close to the pad is attached to the inner wall of the avoidance cavity.

[0015] In one embodiment, the pad is disposed on a side of the connecting member away from the lens body.

[0016] In one embodiment, the connecting member includes a bent section extending out of the lens body from the heating unit and a straight section extending from the bent section into the avoidance cavity.

[0017] In one embodiment, the self-heating lens module further includes an adhesive member disposed between the lens body and the straight section to bond the straight section to the lens body.

[0018] In one embodiment, the lens body is bonded to the circuit board.

[0019] A vehicle-mounted camera, comprising:

[0020] A camera body;

[0021] The self-heating lens module as described in any one of the above, and the self-heating lens module is mounted on the camera body.

[0022] By adjusting the welding structure, the above self-heating lens module does not need to be flush with the board body of the circuit board, and has a lower precision requirement for the length of the connecting member. Even if the length of the connecting member is too long, it will not interfere with the circuit board. By inserting the connecting member into the avoidance cavity, the positions of the connecting member and the pad of the circuit board can be assisted in positioning, and bad phenomena such as less welding, virtual welding, bridging, and voids can be avoided, so that the welding structure between the connecting member and the pad of the circuit board is more stable and the welding is more full. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of a vehicle-mounted camera provided by the first embodiment of the present application;

[0024] Figure 2 Shows a three-dimensional schematic diagram of the lens body of the vehicle-mounted camera according to the above-mentioned first embodiment of the present application;

[0025] Figure 3 Shows a cross-sectional schematic diagram of the vehicle-mounted camera according to the above-mentioned first embodiment of the present application;

[0026] Figure 4 Shows a cross-sectional schematic diagram of a modified example of the vehicle-mounted camera according to the above-mentioned first embodiment of the present application;

[0027] Figure 5 Is a three-dimensional schematic diagram of the vehicle-mounted camera provided by the second embodiment of the present application;

[0028] Figure 6 Shows a three-dimensional schematic diagram of the lens body of the vehicle-mounted camera according to the above-mentioned second embodiment of the present application;

[0029] Figure 7 Shows a cross-sectional schematic diagram of the vehicle-mounted camera according to the above-mentioned second embodiment of the present application.

[0030] Reference numerals: 10, circuit board; 11, board body; 12, pad; 13, avoidance groove; 14, avoidance hole; 20, lens body; 30, heating component; 31, heating unit; 32, connecting piece; 321, bending section; 322, straight section; 40, bonding piece; 50, camera body. Detailed implementation manners

[0031] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] Based on the existing self-heating cameras, there are problems such as interference, insufficient soldering or voids caused by the length deviation of the flexible circuit board, a self-heating lens module and a vehicle-mounted camera are provided. The self-heating lens module adjusts the welding structure to ensure that the structure after the flexible circuit board and the circuit board are welded is more stable and the welding is fuller.

[0038] For details, please refer to Figures 1 to 7 The self-heating lens module includes a circuit board 10, a lens body 20 and a heating assembly 30. The circuit board 10 includes a board body 11 and a plurality of pads 12. The board body 11 is provided with an avoidance cavity, and the plurality of pads 12 are arranged outside the avoidance cavity at intervals. The lens body 20 and the circuit board 10, the heating assembly 30 includes a heating unit 31 and a connector 32. The heating unit 31 is disposed in the lens body 20 for heating the lens body 20. The connector 32 can be a flexible circuit board or a common wiring harness. The connector 32 is electrically connected to the heating unit 31. The connector 32 extends from the heating unit 31 into the avoidance cavity and is soldered to the pad 12.

[0039] It is understandable that the length of the connector 32 of the self-heating lens can be increased, and it is not necessary to ensure that it is flush with the board body 11 of the circuit board 10. The precision requirement for the length of the connector 32 is low, and even if the length of the connector 32 is too long, it will not interfere with the circuit board 10. By inserting the connector 32 into the avoidance cavity, the position of the connector 32 and the pad 12 of the circuit board 10 can be assisted, and the occurrence of insufficient soldering, cold soldering, bridging soldering, voids and other undesirable phenomena can be avoided, so that the welding structure of the connector 32 and the pad 12 of the circuit board 10 can be more stable and the welding is fuller.

[0040] Alternatively, if Figure 3 , Figure 4 and Figure 7 As shown, in one embodiment, the heating unit 31 is attached to the lens of the lens body 20, and the heating unit 31 can heat the lens by generating heat through power, thereby preventing the lens from freezing or fogging.

[0041] Alternatively, if Figure 2 and Figure 3As shown, in one embodiment, the avoidance cavity is an avoidance groove 13 recessed from the front surface of the board body 11. The solder joint is disposed on the front surface of the board body 11, and the connecting member 32 is inserted into the avoidance groove 13. By forming the avoidance cavity by opening the avoidance groove 13 on the board body 11, and the pad 12 is disposed around the avoidance groove 13, front surface soldering of the circuit board 10 and the connecting member 32 can be achieved. The avoidance groove 13 can be a square groove or a U-shaped groove.

[0042] Optionally, as Figure 2 and Figure 4 shown, in one embodiment, the avoidance cavity is an avoidance hole 14 penetrating the board body 11. The pad 12 is disposed on the front surface of the board body 11, and the connecting member 32 is inserted into the avoidance hole 14. By forming the avoidance cavity by opening the avoidance hole 14 on the board body 11, and the pad 12 is disposed around the avoidance hole 14, front surface soldering of the circuit board 10 and the connecting member 32 can be achieved.

[0043] During the assembly process of some vehicle-mounted cameras, the lens body 20 and the circuit board 10 are first fixed to the upper shell, which results in insufficient front surface soldering space for the circuit board 10.

[0044] Optionally, as Figure 5 、 Figure 6 and Figure 7 shown, in one embodiment, the avoidance cavity is an avoidance hole 14 penetrating the board body 11. The pad 12 is disposed on the back surface of the board body 11, and the connecting member 32 passes through the avoidance hole 14 and extends to the back surface of the board body 11. By forming the avoidance cavity by opening the avoidance hole 14 on the board body 11, and the pad 12 is disposed around the avoidance hole 14, back surface soldering of the circuit board 10 and the connecting member 32 can be achieved. This structure is applicable to the situation where there is insufficient front surface soldering space for the circuit board 10, and is also applicable to the situation where the front surface of the circuit board 10 is blocked and cannot be soldered.

[0045] Preferably, as Figure 3 、 Figure 4 and Figure 7 shown, in one embodiment, the side of the connecting member 32 close to the pad 12 is attached to the inner wall of the avoidance cavity. With this setting, the connecting member 32 is in contact with the pad 12 without being suspended, which can increase the size of the soldering surface when the connecting member 32 and the pad 12 are soldered, and avoid bad phenomena such as insufficient soldering, false soldering, bridging, and voids.

[0046] Preferably, as Figure 3 、 Figure 4 and Figure 7As shown, in one embodiment, the pad 12 is disposed on a side of the connecting member 32 away from the lens body 20. With such an arrangement, during soldering, the pad 12 is disposed on a side that is convenient for operation, and interference of the connecting member 32 can be avoided.

[0047] Optionally, in one embodiment, the lens body 20 is bonded to the circuit board 10. The lens body 20 can be bonded to the circuit board 10 by glue.

[0048] Further, as Figure 3 、 Figure 4 and Figure 7 As shown, in one embodiment, the connecting member 32 includes a bent section 321 and a straight section 322. The bent section 321 extends from the heating unit 31 out of the lens body 20, and the straight section 322 extends from the bent section 321 into the avoidance cavity. With such an arrangement, through the structural design of the bent section 321 and the straight section 322, the connecting member 32 can be fitted to the outer surface of the lens body 20, and the straight section 322 can form an L-shaped contact structure with the circuit board 10, increasing the soldering surface during soldering and effectively reducing the occurrence of defects such as insufficient soldering, false soldering, and bridging during soldering.

[0049] Preferably, as Figure 3 、 Figure 4 and Figure 7 As shown, in one embodiment, the self-heating lens module further includes an adhesive member 40 disposed between the lens body 20 and the straight section 322 to bond the straight section 322 to the lens body 20. With such an arrangement, before fixing the lens body 20 to the circuit board 10, the connecting member 32 can be fixed first. After the lens body 20 is fixed to the circuit board 10, the connecting member 32 can be inserted into the avoidance cavity, making the connecting member 32 easier to be positioned. In addition, the problem of the connecting member 32 shaking during soldering can be avoided. The adhesive member 40 can be double-sided tape or glue.

[0050] Furthermore, as Figure 1 and Figure 5 As shown, in one embodiment, the vehicle-mounted camera includes a camera body 50 and the self-heating lens module as described in any of the above. The self-heating lens module is mounted on the camera body 50. The vehicle-mounted camera can heat the lens body 20 through the heating unit 31, and can cope with the influence of extremely cold weather and special regions during use. When the temperature changes suddenly, the phenomenon of the lens icing or fogging can be avoided, and a clear display picture can be continuously output.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0052] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A self-heating lens module, characterized in that, Comprising: A circuit board, the circuit board includes a board body and a plurality of pads, the board body is provided with an avoidance cavity, and the plurality of pads are arranged at intervals outside the avoidance cavity; A lens body, the lens body is fixedly connected to the circuit board; And A heating assembly, the heating assembly includes a heating unit disposed in the lens body and a connecting member electrically connected to the heating unit, the connecting member extends from the heating unit into the avoidance cavity, and the connecting member is welded to the pad.

2. The self-heating lens module according to claim 1, wherein The avoidance cavity is an avoidance groove recessed from the front surface of the board body, the pads are disposed on the front surface of the board body, and the connecting member is inserted into the avoidance groove.

3. The self-heating lens module according to claim 1, wherein The avoidance cavity is an avoidance hole penetrating the board body, the pads are disposed on the front surface of the board body, and the connecting member is inserted into the avoidance hole.

4. The self-heating lens module according to claim 1, wherein The avoidance cavity is an avoidance hole penetrating the board body, the pads are disposed on the back surface of the board body, and the connecting member passes through the avoidance hole and extends to the back surface of the board body.

5. The self-heating lens module according to any one of claims 1 to 4, characterized in that, One side of the connecting member close to the pad is attached to the inner wall of the avoidance cavity.

6. The self-heating lens module according to any one of claims 1 to 4, characterized in that, The pads are disposed on the side of the connecting member away from the lens body.

7. The self-heating lens module according to any one of claims 1 to 4, characterized in that, The connecting member includes a bent section extending out of the lens body from the heating unit and a straight section extending from the bent section into the avoidance cavity.

8. The self-heating lens module according to claim 7, wherein The self-heating lens module further includes an adhesive member disposed between the lens body and the straight section to bond the straight section to the lens body.

9. The self-heating lens module according to any one of claims 1 to 4, characterized in that The lens body is bonded to the circuit board.

10. A vehicle-mounted camera, characterized in that, Comprising: A camera body; The self-heating lens module according to any one of claims 1 to 9, the self-heating lens module is mounted on the camera body.

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