Lens module and vehicle-mounted camera
By incorporating heat-conducting components and stepped sections in the lens module to create a short heat dissipation path, and by utilizing lens heat sinks and housing heat sinks to enhance heat dissipation, the problem of poor heat dissipation in automotive cameras has been solved, achieving efficient heat management and stable operation.
Patent Information
- Application Number
- CN202423015009.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-07
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-07
AI Technical Summary
Existing vehicle cameras have poor heat dissipation, especially in high-temperature environments where performance degrades. Furthermore, the fan cooling method is susceptible to dust and moisture, increasing the risk of malfunction.
A heat-conducting component and a stepped section are set in the lens module. The heat generated by the photosensitive chip is conducted to the stepped section through the heat-conducting component, and then the lens barrel comes into contact with the outside air to form a short heat dissipation path. Combined with the lens heat sink and the housing heat sink, the heat radiation heat dissipation effect is enhanced.
It improves heat conduction efficiency, reduces the operating temperature of the photosensitive chip, extends its service life, ensures stable operation of the vehicle camera in high-temperature environments, and reduces the risk of overheating failure.
Smart Images
Figure CN223744810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat dissipation technology for vehicle cameras, and in particular to a lens module and a vehicle camera. Background Technology
[0002] As a crucial component of modern automotive safety systems, the stability and reliability of in-vehicle cameras are paramount. However, with the continuous enhancement of in-vehicle camera functionality, their internal electronic components, especially the image sensor, generate a significant amount of heat. If this heat cannot be dissipated effectively and promptly, it can lead to a decline in camera performance or even damage.
[0003] Currently, the main heat dissipation methods for automotive cameras rely on natural convection and radiation. Some automotive cameras utilize their outer casing for natural heat dissipation, but this method has low efficiency, especially in high-temperature environments where the internal temperature of the camera rises rapidly, leading to a decrease in camera performance. Other automotive cameras use fans for cooling, but due to the unique environment of a vehicle, fans are easily affected by dust and moisture, resulting in poor heat dissipation or even damage to the fan. Utility Model Content
[0004] Therefore, it is necessary to provide a lens module and vehicle camera to address the problem of poor heat dissipation in existing vehicle cameras.
[0005] A lens module, comprising:
[0006] A photosensitive component, the photosensitive component including a circuit board and a photosensitive chip disposed on the circuit board;
[0007] The lens includes a lens body, a fixing part integrally connected to the lens body and fixed to the circuit board, and a stepped part protruding inward from the inner wall of the fixing part; and
[0008] A heat-conducting component is disposed between the non-photosensitive area of the photosensitive chip and the stepped portion, and is respectively attached to the non-photosensitive area of the photosensitive chip and the stepped portion.
[0009] In one embodiment, the heat-conducting element includes a first heat-conducting portion disposed around the photosensitive chip, a second heat-conducting portion extending outward from the first heat-conducting portion, and a third heat-conducting portion extending inward from the second heat-conducting portion. The first heat-conducting portion is fixed to the circuit board, the upper surface of the second heat-conducting portion is attached to the lower surface of the stepped portion, and the lower surface of the third heat-conducting portion is attached to the photosensitive area of the photosensitive chip.
[0010] In one embodiment, the third heat-conducting portion has a slope that extends obliquely from the upper surface of the second heat-conducting portion toward the interior of the photosensitive chip to the inner surface of the second heat-conducting portion.
[0011] In one embodiment, the heat-conducting component is made of a black heat-conducting material.
[0012] In one embodiment, the thermally conductive component is a thermally conductive silicone component.
[0013] In one embodiment, the lens body includes a housing portion and a lens barrel portion fixed to the housing portion, and the fixing portion is integrally connected to the housing portion or the lens barrel portion.
[0014] In one embodiment, the lens further includes a plurality of lens heat sinks fixed to the lens barrel portion, the lens heat sinks being arranged at intervals around the lens barrel portion.
[0015] In one embodiment, the surface of the lens heat sink is provided with heat dissipation fins or heat dissipation textures.
[0016] In one embodiment, the lens further includes a plurality of housing heat sinks fixed to the upper surface of the housing portion, the housing heat sinks being disposed at intervals around the lens barrel portion.
[0017] A vehicle-mounted camera, comprising:
[0018] Lens modules as described above; and
[0019] The camera body, and the lens module is mounted on the camera body.
[0020] The lens module of this application can directly conduct the heat generated by the photosensitive chip during operation to the stepped portion through the heat-conducting component, and then to the lens barrel portion through the stepped portion. The outer surface of the lens barrel portion is in contact with the outside air, forming a short heat dissipation path between the photosensitive chip, the heat-conducting component, the lens, and the air, which effectively improves the heat conduction efficiency. It can quickly conduct the heat generated by the photosensitive chip to the lens, and use the thermal radiation of the lens to achieve rapid heat dissipation, thereby reducing the operating temperature of the photosensitive chip. This not only extends the service life of the photosensitive chip, but also ensures the stable operation of the vehicle camera in high-temperature environments and reduces the risk of failure due to overheating.
[0021] The lens module of this application can enhance the heat dissipation effect of the lens through the lens heat sink and the housing heat sink, thereby improving the heat dissipation capacity of the lens module. Attached Figure Description
[0022] Figure 1 A cross-sectional schematic diagram of a vehicle-mounted camera provided for one embodiment of this application;
[0023] Figure 2 A cross-sectional schematic diagram of a first example of a lens module according to the above embodiments of this application is shown;
[0024] Figure 3 A cross-sectional schematic diagram of a second example of a lens module according to the above embodiments of this application is shown;
[0025] Figure 4 A cross-sectional schematic diagram of a third example of a lens module according to the above embodiments of this application is shown.
[0026] Reference numerals: 10, Lens module; 11, Photosensitive component; 111, Circuit board; 112, Photosensitive chip; 12, Lens; 121, Lens body; 1211, Lens barrel; 1212, Housing; 122, Fixing part; 123, Stepped part; 124, Lens heat sink; 125, Housing heat sink; 13, Heat-conducting component; 131, First heat-conducting part; 132, Second heat-conducting part; 133, Third heat-conducting part; 1331, Sloping surface; 20, Camera body. Detailed Implementation
[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0033] To address the poor heat dissipation performance of existing automotive cameras, this application provides a lens module and an automotive camera. The lens module of this application improves heat transfer efficiency and overall heat dissipation by incorporating a stepped portion inside the lens and utilizing the stepped portion and heat-conducting components to conduct heat generated by the photosensitive chip.
[0034] Specifically, please refer to Figures 1 to 4In some embodiments, the lens module 10 of this application may include a photosensitive component 11, a lens 12, and a heat-conducting component 13. The photosensitive component 11 may include a circuit board 111 and a photosensitive chip 112. The photosensitive chip 112 has a photosensitive area at its center and a non-photosensitive area surrounding the photosensitive area. The photosensitive chip 112 is disposed on the circuit board 111. The lens 12 includes a lens body 121, a fixing part 122, and a stepped part 123. The fixing part 122 is integrally connected to the lens body 121 and fixed to the circuit board 111. The stepped part 123 protrudes inward from the inner wall of the fixing part 122. The heat-conducting component 13 is disposed between the non-photosensitive area of the photosensitive chip 112 and the stepped part 123, and is respectively attached to the non-photosensitive area of the photosensitive chip 112 and the stepped part 123.
[0035] Understandably, the heat generated by the photosensitive chip 112 during operation can be directly conducted to the stepped portion 123 through the heat-conducting component 13, and then to the lens barrel portion 1211 through the stepped portion 123. The outer surface of the lens barrel portion 1211 is in contact with the outside air, forming a short heat dissipation path between the photosensitive chip 112, the heat-conducting component 13, the lens 12, and the air. This effectively improves the heat conduction efficiency and can quickly conduct the heat generated by the photosensitive chip 112 to the lens 12. The heat radiation from the lens 12 is used to achieve rapid heat dissipation, thereby reducing the operating temperature of the photosensitive chip 112. This not only extends the service life of the photosensitive chip 112 but also ensures the stable operation of the vehicle camera in high-temperature environments, reducing the risk of failure due to overheating.
[0036] More specifically, since the thinner the heat-conducting component 13 (the thinner the heat conduction path, the better the heat conduction effect), in order to ensure the heat conduction efficiency of the heat-conducting component 13, such as Figure 2As shown, in some embodiments, the heat-conducting element 13 may include a first heat-conducting portion 131, a second heat-conducting portion 132 extending outward from the first heat-conducting portion 131, and a third heat-conducting portion 133 extending inward from the second heat-conducting portion 132. The first heat-conducting portion 131 is disposed around the photosensitive chip 112 and is fixed to the circuit board 111. The upper surface of the second heat-conducting portion 132 is attached to the lower surface of the stepped portion 123, and the lower surface of the third heat-conducting portion 133 is attached to the non-photosensitive area of the upper surface of the photosensitive chip 112. The first heat-conducting part 131 contacts the circuit board 111, the third heat-conducting part 133 contacts the photosensitive chip 112, and the second heat-conducting part 132 can contact the stepped portion, so that the heat generated by the photosensitive chip 112 can be conducted to the lens 12 through the heat-conducting component 13, and the heat conducted through the circuit board can also be conducted to the lens 12 through the heat-conducting component 13. With this configuration, the first heat-conducting part 131, the second heat-conducting part 132, and the third heat-conducting part 133 can form a T-shaped structure, which can ensure sufficient contact with the photosensitive chip 112 and the stepped portion 123, while making the first heat-conducting part 131, the second heat-conducting part 132, and the third heat-conducting part 133 as thin as possible, shortening the heat conduction path and enhancing the heat conduction efficiency of the heat-conducting component 13. Furthermore, since the non-photosensitive area of the photosensitive chip 112 is prone to reflecting light and generating stray light, the third heat-conducting part 133 can block the non-photosensitive area, avoid generating stray light, and improve the imaging accuracy of the photosensitive chip 112.
[0037] More preferably, such as Figure 2 As shown, in some embodiments, the third heat-conducting part 133 has a slope 1331 that extends obliquely from the upper surface of the second heat-conducting part 132 toward the inner surface of the photosensitive chip 112. With this configuration, some light rays incident on the third heat-conducting part 133 can be reflected by the slope 1331 and avoid the photosensitive area of the photosensitive chip 112, thereby preventing stray light interference.
[0038] In particular, to better avoid stray light generation, in some embodiments, the heat-conducting element 13 can be made of a black thermally conductive material. In this way, light incident on the heat-conducting element 13 can be absorbed by the heat-conducting element 13, thereby avoiding stray light generation and improving the imaging quality of the photosensitive chip 112.
[0039] Optionally, in some embodiments, the heat-conducting element 13 can be implemented as a thermally conductive silicone material. The thermally conductive silicone has a high thermal conductivity, enabling it to effectively absorb the heat generated by the photosensitive chip 112 and conduct it to the lens 12.
[0040] Optionally, such as Figure 2 and Figure 3As shown, in some embodiments, the lens body 121 includes a housing portion 1212 and a lens barrel portion 1211, the lens barrel portion 1211 being fixedly disposed on the housing portion 1212, and the fixing portion 122 being integrally connected to the housing portion 1212 or the lens barrel portion 1211. When assembling the lens, the housing portion 1212 can be fixedly connected to the lens barrel portion 1211 first, and then the circuit board 111 can be bonded to the fixing portion 122.
[0041] like Figure 2 As shown, in the first example of this application, the fixing part 122 is integrally connected to the lens barrel part 1211, and the outer shell part 1212 is fixed to the lens barrel part 1211.
[0042] like Figure 3 As shown, in the second example of this application, the fixing part 122 is integrally connected to the outer shell part 1212, and the outer shell part 1212 is fixed to the lens barrel part 1211.
[0043] Preferably, such as Figure 4 As shown in the third example of this application, the lens barrel 1211 is integrally connected to the housing 1212. By integrating the housing 1212 and the lens barrel 1211, the assembly steps of the lens module 10 can be reduced and the production efficiency of the lens module 10 can be improved.
[0044] Optionally, such as Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the lens 12 further includes a plurality of lens heat sinks 124 fixed to the lens barrel portion 1211, the lens heat sinks 124 being arranged at intervals around the lens barrel portion 1211. This arrangement increases the contact area with air, thereby increasing the total contact area between the lens 12 and the air, thus enhancing the heat dissipation effect of the lens 12 and improving the heat dissipation capacity of the lens module 10.
[0045] Optionally, such as Figure 4 As shown, in some modified embodiments, the lens 12 further includes a plurality of heat sink fins 125 fixed to the upper surface of the housing portion 1212, the heat sink fins 125 being arranged at intervals around the lens barrel portion 1211. This arrangement increases the contact area between the heat sink fins 125 and the air, thereby increasing the total contact area between the lens 12 and the air, thus enhancing the heat dissipation effect of the lens 12 and improving the heat dissipation capacity of the lens module 10.
[0046] It is worth noting that the lens heat sink 124 and the housing heat sink 125 can be integrally formed with the lens barrel 1211 and the housing 1212, or they can be processed separately and then fixedly connected to the lens barrel 1211 and the housing 1212 by bonding, welding or mechanical connection.
[0047] Preferably, in some embodiments, the surface of the lens heat sink 124 may be provided with heat dissipation fins or heat dissipation textures. These fins and textures can further increase the contact area with air, enhance the heat radiation heat dissipation effect of the lens 12, and improve the heat dissipation capacity of the lens module 10. Similarly, the surface of the housing heat sink 125 may also be provided with heat dissipation fins or heat dissipation textures.
[0048] In particular, in some embodiments, the lens heat sink 124 and the housing heat sink 125 may be set to black or a color with a high thermal emissivity to enhance the heat dissipation effect of the lens 12 and improve the heat dissipation capacity of the lens module 10.
[0049] Furthermore, such as Figure 1 As shown, in some embodiments, the vehicle-mounted camera of this application may include: a lens module 10 as described above and a camera body 20, wherein the lens module 10 is mounted on the camera body 20. The camera body 20 utilizes the high heat dissipation capacity of the lens module 10 to maintain stable operating performance.
[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.
[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A lens module, characterized in that, The application relates to a lens module. The lens module comprises a light-sensing assembly, a lens and a camera body. The light-sensing assembly comprises a circuit board and a light-sensing chip arranged on the circuit board. The lens comprises a lens body, a fixed part integrally connected to the lens body and fixed to the circuit board, and a stepped part protruding inward from the inner wall of the fixed part. The lens further comprises a heat-conducting part arranged between the non-light-sensing area of the light-sensing chip and the stepped part and adhered to the non-light-sensing area of the light-sensing chip and the stepped part respectively.
2. The lens module according to claim 1, wherein, The heat-conducting part comprises a first heat-conducting part arranged around the light-sensing chip, a second heat-conducting part extending outward from the first heat-conducting part, and a third heat-conducting part extending inward from the second heat-conducting part.
3. The lens module according to claim 2, wherein, The first heat-conducting part is fixed to the circuit board, the upper surface of the second heat-conducting part is adhered to the lower surface of the stepped part, and the lower surface of the third heat-conducting part is adhered to the non-light-sensing area of the light-sensing chip. 4.The lens module according to any one of claims 1 to 3, wherein, The third heat-conducting part has an inclined surface extending obliquely from the upper surface of the second heat-conducting part to the inner surface of the second heat-conducting part. 5.The lens module according to any one of claims 1 to 3, wherein, The heat-conducting part is made of black heat-conducting material. 6.The lens module according to any one of claims 1 to 3, wherein, The heat-conducting part is made of heat-conducting silica gel.
7. The lens module according to claim 6, wherein, The lens body comprises a shell part and a lens barrel part fixed to the shell part, and the fixed part is integrally connected to the shell part or the lens barrel part. 8.The lens module according to claim 7, wherein, The lens further comprises a plurality of lens heat-dissipation fins fixed to the lens barrel part, which are arranged around the lens barrel part at intervals. 9.The lens module according to claim 6, wherein, The surface of the lens heat-dissipation fin is provided with heat-dissipation fins or heat-dissipation textures.
10. A vehicle camera, characterized by comprising: The lens further comprises a plurality of shell heat-dissipation fins fixed to the upper surface of the shell part, which are arranged around the lens barrel part at intervals. The application relates to a lens module. The lens module comprises a lens module as claimed in any one of claims 1 to 9. The camera body is provided with the lens module. The camera body is provided with the lens module.