CN115022521B - Camera module - Google Patents
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- CN115022521B CN115022521B CN202210807200.2A CN202210807200A CN115022521B CN 115022521 B CN115022521 B CN 115022521B CN 202210807200 A CN202210807200 A CN 202210807200A CN 115022521 B CN115022521 B CN 115022521B
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- housing
- camera module
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- 239000007788 liquid Substances 0.000 claims abstract description 311
- 238000004140 cleaning Methods 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 12
- 230000017525 heat dissipation Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
A camera module, comprising: the lens comprises a lens body, a circuit board and a shell, wherein the shell comprises a first shell and a second shell, and the connecting ends of the first shell and the second shell are spliced and connected; the lens is arranged at the position of a lens mounting opening of the first shell, and the circuit board is arranged in a cavity surrounded by the shell; the first housing and/or the second housing is provided with a liquid channel comprising a liquid inlet and a liquid outlet. According to the camera module, the liquid channel for flowing liquid is arranged in the shell, the liquid with low temperature flows into the liquid channel from the liquid inlet and flows out from the liquid outlet, the liquid can rapidly take away the heat of the shell, so that the temperature of the shell is reduced, the heat emitted by the circuit board in the shell is further rapidly taken away, the temperature in the shell is reduced, the circuit board is in a proper environment, and the performance reduction or damage of the camera module due to the overhigh temperature is avoided.
Description
Technical Field
The invention relates to the technical field of imaging equipment, in particular to a camera module.
Background
With the increasing popularity of automobiles and artificial intelligence, the safety of running automobiles is receiving more and more attention, and cameras for DMS (Driver Monitor System, i.e., driver monitoring system) and ADAS (Advanced Driving Assistance System, i.e., advanced driving assistance system) are being developed, and the cameras are installed at different positions of the vehicle (e.g., a-pillar, B-pillar, rearview mirror, side view mirror, etc.) to obtain imaging scenes of different angles. More prominently, as the functions of the camera are more and the required imaging quality is higher and more, the power consumption of the camera is larger and more, and the heat emitted by the camera is larger and more.
The existing camera directly radiates heat passively through the shell, or radiating fins are arranged on the outer wall of the shell to improve the passive radiating effect. However, the above-mentioned mode is passive heat dissipation, and the inside heat of camera casing at first needs to be through the air transfer to the casing, then distributes the outside atmosphere of casing by the inboard transmission of casing, and above-mentioned heat dissipation process efficiency is lower and is difficult to satisfy the heat dissipation demand of camera, and the poor heat dissipation will lead to the camera performance to reduce even take place to damage.
Disclosure of Invention
The invention aims to provide a camera module with better heat dissipation performance.
In order to achieve the above object, an embodiment of the present invention provides a camera module, including: the lens comprises a lens body, a circuit board and a shell, wherein the shell comprises a first shell and a second shell, and the connecting ends of the first shell and the second shell are spliced and connected; the lens is arranged at the position of a lens mounting opening of the first shell, and the circuit board is arranged in a cavity surrounded by the shell; the first shell and/or the second shell are/is provided with a liquid channel, and the liquid channel comprises a liquid inlet and a liquid outlet; grooves formed in the connecting end of the first shell and/or the connecting end of the second shell are spliced to form a first liquid channel; the second shell is provided with a liquid inlet, one end of the liquid inlet is a liquid inlet, and the other end of the liquid inlet is communicated with the first liquid channel; the second shell is provided with a liquid outlet, one end of the liquid outlet is a liquid outlet, and the other end of the liquid outlet is communicated with the first liquid channel. When the cooling device is used, liquid enters the first liquid channel through the liquid inlet channel, and the liquid in the first cooling channel is in contact with the first shell and the second shell, so that the heat of the first shell and the second shell is taken away rapidly by the liquid, and the temperature of the whole shell can be reduced.
Further, the first shell is provided with a second liquid channel, and one end of the second liquid channel is communicated with the first liquid channel; and/or the second shell is provided with a second liquid channel, and one end of the second liquid channel is communicated with the first liquid channel. The liquid can enter into the second liquid channel when circulating in the first liquid channel to take away the casing heat along with the flow of liquid, because the increase of the liquid distribution area in the casing, can realize better cooling effect.
Further, the second shell comprises a cylindrical body, one end of the cylindrical body is a connecting end, and the other end of the cylindrical body is connected with the bottom shell; the cylindrical body is provided with a second liquid channel, and one end of the second liquid channel is communicated with the first liquid channel; the liquid inlet and the liquid outlet are both arranged on the bottom shell of the second shell. The liquid can enter into the second liquid channel when circulating in the first liquid channel to take away the casing heat along with the flow of liquid, because the increase of the liquid distribution area in the casing, can realize better cooling effect.
Further, the bottom shell of the second shell is also provided with a third liquid channel, and the other end of the second liquid channel is communicated with the third liquid channel; the liquid outlet channel is communicated with the third liquid channel. The liquid is conveyed to the second liquid channel through the first liquid channel, and then flows to the liquid channel in a converging way through the third liquid channel, so that the circulating flow of the liquid is facilitated.
Further, the second shell is formed by splicing and connecting a cylindrical body and a bottom shell, and the connecting ends of the cylindrical body and the bottom shell are spliced to form a third liquid channel. The structure can reduce the manufacturing difficulty of the second shell and reduce the manufacturing cost of the shell.
Further, the shell is provided with a liquid inlet channel and a liquid outlet channel which are parallel to the optical axis direction of the lens, one end of the liquid inlet channel is a liquid inlet, and one end of the liquid outlet channel is a liquid outlet; the shell is also provided with at least one connecting channel surrounding the optical axis direction of the lens, one end of the connecting channel is communicated with the liquid inlet channel, and the other end of the connecting channel is communicated with the liquid outlet channel. When the camera module is communicated with the liquid circulation system, liquid with lower temperature enters from the liquid inlet channel and flows to the connecting channel through the liquid inlet channel, finally enters into the liquid outlet channel from the connecting channel and flows back to the liquid circulation system from the liquid outlet channel.
Further, the second shell comprises a cylindrical body, one end of the cylindrical body is a connecting end, and the other end of the cylindrical body is connected with the bottom shell; the liquid inlet channel and the liquid outlet channel are oppositely arranged on the cylindrical body, and the connecting channels are symmetrically arranged on planes where the liquid inlet channel and the liquid outlet channel are located. In the further technical scheme, the temperature of the liquid flowing through the connecting channel, in which the side wall of the shell is close to the liquid outlet channel, is lower, and the heat dissipation performance of the side wall of the shell at the position can be improved.
Further, the second shell is formed by splicing and connecting a cylindrical body and a bottom shell, straight channels which are parallel to the optical axis direction of the lens and are arranged at intervals are arranged on the cylindrical body, a first connecting groove is formed in the connecting end of the first shell, and the first connecting groove is used for conducting one end, close to the first shell, of the straight channels at intervals; the bottom shell is provided with a second connecting groove which is used for conducting one end of the straight channel close to the bottom shell at intervals; the spaced straight channels are connected in series in sequence by the conduction of the first connecting groove and the second connecting groove. Liquid enters through the liquid inlet and then sequentially flows through the straight channels at intervals, and heat at the corresponding position of the shell is taken away while the liquid flows, so that the temperature of the camera module is reduced. Meanwhile, the first connecting groove of the first shell, the second connecting groove of the bottom shell and the straight channel of the cylindrical body are easier to process, so that the embodiment also has the advantages of easiness in manufacturing and processing and low cost.
Further, the lens cleaning device further comprises a spraying hole facing the direction of the lens, the spraying hole is arranged on the first shell, the spraying hole is communicated with the liquid passage through a cleaning passage, and the cleaning passage is provided with a control valve. When the control valve is opened, liquid in the liquid channel is sprayed out through the cleaning channel and the spraying hole, and the sprayed liquid acts on the lens at the outermost end of the lens because the spraying hole is formed towards the direction of the lens, so that the lens is cleaned, and the imaging quality of the camera module is ensured.
The beneficial effects are that: according to the camera module, the liquid channel for flowing liquid is arranged in the shell, the liquid with low temperature flows into the liquid channel from the liquid inlet and flows out from the liquid outlet, the liquid can rapidly take away the heat of the shell, so that the temperature of the shell is reduced, the heat emitted by the circuit board in the shell is further rapidly taken away, the temperature in the shell is reduced, the circuit board is in a proper environment, and the performance reduction or damage of the camera module due to the overhigh temperature is avoided.
Drawings
In order to more clearly illustrate the present invention, the following description and the accompanying drawings of the present invention will be given. It should be apparent that the figures in the following description merely illustrate certain aspects of some exemplary embodiments of the present invention, and that other figures may be obtained from these figures by one of ordinary skill in the art without undue effort.
FIG. 1 is a schematic diagram of a camera module according to a first embodiment of the present invention;
FIG. 2 is a side cross-sectional view of a camera module according to a first embodiment of the present invention;
FIG. 3 is an exploded view of a camera module according to a first embodiment of the present invention;
FIG. 4 is a side cross-sectional view of a second housing of the first embodiment of the invention;
FIG. 5 is a schematic view of a camera module with spray holes;
FIG. 6 is a schematic illustration of a camera module in communication with a vehicle fluid circulation system;
FIG. 7 is a diagram illustrating a camera module according to a second embodiment of the present invention;
FIG. 8 is a schematic diagram of a liquid channel of a camera module according to a second embodiment of the present invention;
FIG. 9 is a side cross-sectional view of a camera module according to a third embodiment of the present invention;
FIG. 10 is a schematic view illustrating a liquid channel of a camera module according to a third embodiment of the present invention;
FIG. 11 is a schematic view illustrating a liquid channel of a camera module according to a third embodiment of the present invention;
FIG. 12 is a schematic view of a second housing and a liquid channel of a camera module according to a third embodiment of the present invention;
FIG. 13 is a diagram of a camera module according to a fourth embodiment of the present invention;
fig. 14 is a schematic view of a bottom chassis of a camera module according to a fourth embodiment of the present invention;
fig. 15 is a schematic view of a first housing of a camera module according to a fourth embodiment of the invention;
fig. 16 is a schematic view of a first housing and a cylindrical body of a camera module according to a fourth embodiment of the present invention;
fig. 17 is a side sectional view of a camera module according to a fourth embodiment of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
10. a lens;
20. the lens comprises a shell, 201, a first shell, 2011, a lens mounting port, 2012, a groove, 2013, a spray hole, 2014, a first connecting groove, 202, a second shell, 2021, a cylindrical body, 2022, a bottom shell, 2023, a flange, 2024 and a second connecting groove;
30. a circuit board;
40. a liquid channel 401, a first liquid channel 402, a second liquid channel 403, a third liquid channel 404, a liquid inlet channel 405, a liquid inlet port 406, a liquid outlet channel 407, a liquid outlet port 408, a connection channel 409, a cleaning channel 4010, and a straight channel;
50. a vehicle fluid circulation system.
Detailed Description
Various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, numerical expressions and values, etc. set forth in these embodiments are to be construed as illustrative only and not as limiting unless otherwise stated.
The use of the terms "comprising" or "including" and the like in this disclosure means that elements preceding the term encompass the elements recited after the term, and does not exclude the possibility of also encompassing other elements.
All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Parameters of, and interrelationships between, components, and control circuitry for, components, specific models of components, etc., which are not described in detail in this section, can be considered as techniques, methods, and apparatus known to one of ordinary skill in the relevant art, but are considered as part of the specification where appropriate.
The embodiment of the invention provides a camera module, which comprises:
a lens 10 generally composed of a plurality of lens segments arranged along an optical axis and a barrel in which the lens segments are mounted;
a circuit board 30 including a photosensitive element for imaging;
the shell 20, the shell 20 includes the first shell 201 and second shell 202, the junction end of the first shell 201 and second shell 202 is amalgamated and connected; the lens 10 is mounted at the lens mounting opening 2011 of the first housing 201, and the circuit board 30 is mounted in a cavity surrounded by the housing 20; in a first specific embodiment, the first housing 201 is provided with a liquid channel 40, the liquid channel 40 comprising a liquid inlet 405 and a liquid outlet 407. In a second embodiment, the second housing 202 is provided with a liquid channel 40, the liquid channel 40 comprising a liquid inlet 405 and a liquid outlet 407. In a third specific embodiment, the first housing 201 and the second housing 202 are provided with a liquid channel 40, the liquid channel 40 comprising a liquid inlet 405 and a liquid outlet 407. For the third specific embodiment, the liquid passage provided in the first housing and the liquid passage provided in the second housing may be independently subjected to the flow of the liquid, and at this time, the liquid passage provided in the first housing and the liquid passage provided in the second housing are not communicated with each other; or the liquid passage provided in the first housing and the liquid passage provided in the second housing communicate with each other, and the liquid can flow between the first housing and the second housing.
According to the camera module, the liquid channel for flowing liquid is arranged in the shell, the liquid with low temperature flows into the liquid channel from the liquid inlet and flows out from the liquid outlet, the liquid can rapidly take away the heat of the shell, so that the temperature of the shell is reduced, the heat emitted by the circuit board in the shell is further rapidly taken away, the temperature in the shell is reduced, the circuit board is in a proper environment, and the performance reduction or damage of the camera module due to the overhigh temperature is avoided. In the embodiment shown in fig. 6, the camera module is mounted on the vehicle, the camera module is communicated with the vehicle liquid circulation system 50, that is, the liquid inlet of the camera module is communicated with the liquid supply pipe of the vehicle liquid circulation system, and the liquid outlet is communicated with the liquid return pipe of the vehicle liquid circulation system, so that the self-owned liquid circulation system of the vehicle is fully utilized, and the additional liquid circulation system is avoided.
When the lens is used in an environment with more dust, the dust falls on the surface of the outermost lens of the lens, and when the accumulated dust is more, the imaging quality of the camera module is reduced, and the above embodiment is further improved, the camera module is further provided with a spraying hole 2013 (as shown in fig. 5) facing the direction of the lens 10 on the first housing 201, the spraying hole 2013 is communicated with the liquid channel 40 through the cleaning channel 409, and the cleaning channel 409 is provided with a control valve. When the control valve is opened, liquid in the liquid channel is sprayed out through the cleaning channel and the spraying hole, and the sprayed liquid (with cleaning and decontamination effects) acts on the lens at the outermost end of the lens because the spraying hole is opened towards the direction of the lens, so that the lens is cleaned, and the imaging quality of the camera module is ensured.
Example 1
A camera module according to embodiment 1 of the present invention is described with reference to fig. 1 to 6, and includes: the lens 10, the circuit board 30 and the shell 20, wherein the shell 20 comprises a first shell 201 and a second shell 202, and the connecting ends of the first shell 201 and the second shell 202 are connected in a split mode; the lens 10 is mounted at the lens mounting opening 2011 of the first housing 201, and the circuit board 30 is mounted in a cavity surrounded by the housing 20; the grooves 2012 provided at the connection end of the first housing 201 and/or the connection end of the second housing 202 are spliced to form the first liquid passage 401; in the first embodiment, the connection end of the first housing 201 is provided with a groove 2012, and the connection end of the second housing is of a planar structure, and sealing of the connection position of the housing is achieved by arranging a gasket or sealant at the connection position of the first housing and the second housing, or welding the connection position of the first housing and the second housing, or the like. As shown in fig. 3 and 4, another alternative structure is that a groove 2012 is formed at the connection end of the first housing 201, a flange 2023 is formed at the connection end of the second housing, and ports of a liquid inlet channel and a liquid outlet channel are formed on the flange, and are communicated with the first liquid channel, and sealing of the connection position of the housing is achieved by setting a sealing gasket and a sealant at the connection position of the first housing and the second housing, or welding the connection position of the first housing and the second housing, or the like. In a second embodiment, the connection end of the second housing 202 is provided with a groove 2012, and the connection end of the first housing is a planar structure. In another embodiment, the first housing and the second housing are both provided with grooves, and the positions of the grooves are corresponding, and after the first housing and the second housing are butted, the grooves are spliced to form the first liquid channel 401. The second housing 202 is provided with a liquid inlet channel 404, one end of the liquid inlet channel 404 is provided with a liquid inlet 405, and the other end of the liquid inlet channel 404 is communicated with the first liquid channel 401; the second housing 202 is provided with a liquid outlet 406, one end of the liquid outlet 406 is a liquid outlet 407, and the other end of the liquid outlet 406 is communicated with the first liquid channel 401.
According to the embodiment of the invention, the first liquid channel is arranged between the first shell and the second shell, and liquid enters the first liquid channel through the liquid inlet channel, and as the liquid in the first cooling channel is in contact with both the first shell and the second shell, the heat of the first shell and the second shell is quickly taken away by the liquid, so that the temperature of the whole shell can be reduced, the heat emitted by the circuit board in the shell is quickly taken away, the temperature in the shell is reduced, the circuit board is in an environment with proper temperature, and the performance reduction or damage of the camera module due to overhigh temperature is avoided.
In the camera module of the above embodiment, the area of the liquid distributed in the housing is limited, and in order to further improve the cooling effect of the camera module, the above embodiment is further improved, where the first housing 201 is provided with a second liquid channel 402, and one end of the second liquid channel 402 is communicated with the first liquid channel 401; and/or the second housing 202 is provided with a second liquid passage 402, and one end of the second liquid passage 402 communicates with the first liquid passage 401. In the embodiment shown in fig. 2 and 4, only one end of the second liquid channel 402 is in communication with the first liquid channel, and liquid enters the second liquid channel when flowing in the first liquid channel, and takes away heat of the housing along with the flowing of the liquid, so that a better cooling effect can be achieved due to the increase of the liquid distribution area in the housing.
Example 2
Referring to fig. 7 and 8, a camera module according to embodiment 2 of the present invention is described, and the basic structure of the camera module according to the present invention is the same as that of embodiment 1, except that the second housing 202 includes a cylindrical body 2021, one end of the cylindrical body 2021 is a connection end, and the other end of the cylindrical body 2021 is connected to the bottom shell 2022; the cylindrical body 2021 is provided with a second liquid passage 402, and one end of the second liquid passage 402 communicates with the first liquid passage 401; the liquid inlet 405 and the liquid outlet 407 are both provided at the bottom case 2022 of the second housing 202; the bottom case 2022 of the second housing 202 is further provided with a third liquid passage 403, and the other end of the second liquid passage 402 communicates with the third liquid passage 403; the liquid outlet passage 406 communicates with the third liquid passage 403. The liquid inlet channel can be communicated with the third liquid channel, at the moment, liquid is conveyed to the second liquid channel through the first liquid channel and the third liquid channel respectively, or the liquid inlet channel is disconnected (not communicated) with the third liquid channel, at the moment, liquid is conveyed to the second liquid channel through the first liquid channel, and then flows to the liquid outlet channel through the third liquid channel in a converging way, so that the circulating flow of the liquid is facilitated.
The cylindrical body 2021 and the bottom shell 2022 of the second housing 202 may be integrally formed, for example, by machining or casting, but have the disadvantages of high manufacturing difficulty and high cost, so that in order to make the manufacturing of the second housing easier and reduce the cost, the second housing 202 is formed by splicing (bonding, welding, bolting, and ensuring the tightness of the joint surface) the cylindrical body 2021 and the bottom shell 2022, and the joint ends of the cylindrical body 2021 and the bottom shell 2022 are spliced to form the third liquid channel 403. In the first embodiment, the connection end of the cylindrical body 2021 is provided with a groove, and the connection end of the bottom shell 2022 is a planar structure. In the second embodiment, the connection end of the bottom shell 2022 is provided with a groove, and the connection end of the cylindrical body 2021 is a planar structure. In another embodiment, the cylindrical body 2021 and the bottom shell 2022 are provided with grooves, and the positions of the grooves correspond to each other, and after the cylindrical body and the bottom shell are butted, the grooves are spliced to form the third liquid channel 403. The structure can reduce the manufacturing difficulty of the second shell and reduce the manufacturing cost of the shell.
Example 3
A camera module according to embodiment 3 of the present invention is described with reference to fig. 9 to 12, and includes: the lens 10, the circuit board 30 and the shell 20, wherein the shell 20 comprises a first shell 201 and a second shell 202, and the connecting ends of the first shell 201 and the second shell 202 are connected in a split mode; the lens 10 is mounted at the lens mounting opening 2011 of the first housing 201, and the circuit board 30 is mounted in a cavity surrounded by the housing 20; the housing 20 is provided with a liquid inlet channel 404 and a liquid outlet channel 406 which are approximately parallel to the optical axis direction of the lens 10, and the liquid inlet channel 404 and the liquid outlet channel 406 can be either parallel to the optical axis direction of the lens 10 or form an included angle with the optical axis of the lens, which is larger than zero and smaller than 30 degrees. One end of the liquid inlet channel 404 is a liquid inlet 405, and one end of the liquid outlet channel 406 is a liquid outlet 407; the housing 20 is further provided with at least one connecting channel 408 surrounding the optical axis direction of the lens 10, one end of the connecting channel 408 is communicated with the liquid inlet channel 404, and the other end is communicated with the liquid outlet channel 406. When the number of connecting channels 408 is plural, it is preferable that the connecting channels be arranged parallel to each other (as shown in fig. 10).
When the camera module is communicated with the liquid circulation system, liquid with lower temperature enters from the liquid inlet channel and flows to the connecting channel through the liquid inlet channel, finally enters into the liquid outlet channel from the connecting channel and flows back to the liquid circulation system from the liquid outlet channel. The circulating liquid can rapidly take away the heat of the shell, so that the temperature of the shell is reduced, the heat emitted by the circuit board in the shell is rapidly taken away, the temperature in the shell is reduced, the circuit board is in a proper environment, and the camera module is prevented from being reduced or damaged due to overhigh temperature.
In the embodiment shown in fig. 9 and 10, the housing has a rectangular parallelepiped structure, and the liquid inlet channel 404 and the liquid outlet channel 406 are disposed on the same side of the housing, in the above structure, the side wall of the housing adjacent to the liquid outlet channel 406 has a higher temperature after absorbing heat due to the more time of flowing the liquid, and the heat dissipation capacity of the liquid is reduced, so that the side wall of the housing adjacent to the liquid outlet channel has a poorer heat dissipation effect, and the corresponding inner space of the housing has a poorer heat dissipation effect. Thus, as shown in fig. 12, the second housing 202 includes a cylindrical body 2021, one end of the cylindrical body 2021 is a connection end, and the other end of the cylindrical body 2021 is connected to a bottom case 2022; the liquid inlet channel 404 and the liquid outlet channel 406 are oppositely arranged on the cylindrical body 2021, and the connecting channel 408 is symmetrically arranged on the plane where the liquid inlet channel 404 and the liquid outlet channel 406 are located. Compared with the structure before the improvement, the temperature of the liquid flowing through the connecting channel, in which the side wall of the shell is close to the liquid outlet channel, is lower in the technical scheme after the improvement, and the heat dissipation performance of the side wall of the shell at the position can be improved.
In order to realize cleaning and dedusting of the surface of the lens at the outermost end of the lens, the embodiment is further improved, the camera module is further provided with a spray hole facing the direction of the lens 10 on the first shell 201, the spray hole is communicated with the liquid channel 40 through a cleaning channel 409, and the cleaning channel 409 is provided with a control valve. In the embodiment shown in fig. 10 and 11, a section of the washing channel is arranged between the inlet channel and the outlet channel, which section of the washing channel communicates at one end with the outlet channel and extends at the other end towards the spray holes. In fig. 10, the liquid enters from the liquid inlet channel, flows out from the liquid outlet channel after flowing through the connecting channel, and the liquid in the liquid outlet channel cannot enter into the cleaning channel due to the fact that the control valve closes the liquid outlet channel. It should be noted that the liquid (such as liquid) in the invention can enter from the liquid inlet channel and flow out from the liquid outlet channel; alternatively, as shown in fig. 11, the liquid may enter through the liquid outlet passage and exit through the liquid inlet passage. In the liquid circulation mode, a control valve is opened, liquid enters a liquid outlet channel and a spraying channel respectively, and the liquid is sprayed out of a camera lens through a spraying hole communicated with the spraying channel.
Example 4
A camera module according to embodiment 4 of the present invention will be described with reference to fig. 13 to 17, which includes: a lens (not shown), a circuit board 30 and a housing 20, the housing 20 including a first housing 201 and a second housing 202, the connection ends of the first housing 201 and the second housing 202 being connected in a split manner; the lens 10 is mounted at the lens mounting opening 2011 of the first housing 201, and the circuit board 30 is mounted in a cavity surrounded by the housing 20; the second housing 202 is formed by splicing and connecting a cylindrical body 2021 and a bottom shell 2022, wherein the cylindrical body 2021 is provided with through channels 4010 which are generally parallel to the optical axis direction of the lens 10 and are arranged at intervals, and the through channels 4010 can be parallel to the optical axis direction of the lens 10 or can form an included angle with the optical axis of the lens, wherein the included angle is larger than zero and smaller than 30 degrees. The connecting end of the first shell 201 is provided with a first connecting groove 2014, and the first connecting groove 2014 is communicated with one end of the channel 4010 close to the first shell 201 at intervals; the bottom case 2022 is provided with a second connecting groove 2024, and the second connecting groove 2024 is spaced apart from one end of the through straight channel 4010 near the bottom case 2022; the spaced through vias 4010 are serially connected in sequence by conduction through the first connecting slot 2014 and the second connecting slot 2024. The first connecting groove of the first shell, the second connecting groove of the bottom shell and the straight channel of the cylindrical body are easier to process, so that the embodiment also has the advantages of easy manufacturing and processing and low cost.
As shown in fig. 16 and 17, the cylindrical body has a rectangular parallelepiped structure, two straight channels are respectively disposed on four side walls of the cylindrical body (the number of straight channels in the drawing is only schematic, and the specific number of straight channels is determined according to the heat dissipation requirement), as shown in fig. 15, the first connecting groove 2014 of the first housing 201 has an L-shaped structure, and the first connecting groove communicates the immediately adjacent straight channels on two side walls of the cylindrical body. As shown in fig. 14, the second connecting grooves 2024 of the bottom case 2022 are in a straight line structure, and the number of the second connecting grooves is three, and the second connecting grooves respectively correspond to the positions of the straight channels on the three side walls of the cylindrical body (two straight channels on one side wall are not communicated by the second connecting grooves), and each second connecting groove is communicated with two adjacent straight channels on the same side wall of the cylindrical body; in the structure, the side wall of the cylindrical body, which is not corresponding to the second connecting groove, is provided with two straight channels, wherein one straight channel is used as a liquid inlet channel and is communicated with a liquid inlet (405) corresponding to the bottom shell; the other straight channel is used as a liquid outlet channel and is communicated with a corresponding liquid outlet (4057) on the bottom shell, liquid enters from the liquid inlet and then sequentially flows through the straight channels at intervals, and heat at the corresponding position of the shell is taken away while the liquid flows, so that the temperature of the camera module is reduced.
It should be understood that the above embodiments are only for explaining the present invention, the protection scope of the present invention is not limited thereto, and any person skilled in the art should be able to modify, replace and combine the technical solution according to the present invention and the inventive concept within the scope of the present invention.
Claims (9)
1. A camera module, comprising: the lens (10), the circuit board (30) and the shell (20), wherein the shell (20) comprises a first shell (201) and a second shell (202), and the connecting ends of the first shell (201) and the second shell (202) are connected in a spliced mode; the lens (10) is arranged at the position of a lens mounting opening (2011) of the first shell (201), and the circuit board (30) is arranged in a cavity surrounded by the shell (20); the first housing (201) and/or the second housing (202) are provided with a liquid channel (40), the liquid channel (40) comprising a liquid inlet (405) and a liquid outlet (407);
grooves (2012) formed at the connecting end of the first shell (201) and/or the connecting end of the second shell (202) are spliced to form a first liquid channel (401); the second shell (202) is provided with a liquid inlet channel (404), one end of the liquid inlet channel (404) is a liquid inlet (405), and the other end of the liquid inlet channel (404) is communicated with the first liquid channel (401); the second shell (202) is provided with a liquid outlet channel (406), one end of the liquid outlet channel (406) is a liquid outlet (407), and the other end of the liquid outlet channel (406) is communicated with the first liquid channel (401).
2. The camera module according to claim 1, wherein the first housing (201) is provided with a second liquid channel (402), and one end of the second liquid channel (402) is communicated with the first liquid channel (401); and/or, the second shell (202) is provided with a second liquid channel (402), and one end of the second liquid channel (402) is communicated with the first liquid channel (401).
3. The camera module according to claim 1, wherein the second housing (202) includes a cylindrical body (2021), one end of the cylindrical body (2021) is a connection end, and the other end of the cylindrical body (2021) is connected to the bottom shell (2022); the cylindrical body (2021) is provided with a second liquid channel (402), and one end of the second liquid channel (402) is communicated with the first liquid channel (401); the liquid inlet (405) and the liquid outlet (407) are both provided at the bottom shell (2022) of the second housing (202).
4. A camera module according to claim 3, wherein the bottom case (2022) of the second housing (202) is further provided with a third liquid passage (403), and the other end of the second liquid passage (402) communicates with the third liquid passage (403); the liquid outlet channel (406) is communicated with the third liquid channel (403).
5. Camera module according to claim 4, wherein the second housing (202) is formed by splicing a cylindrical body (2021) and a bottom shell (2022), and the connecting ends of the cylindrical body (2021) and the bottom shell (2022) are spliced to form a third liquid channel (403).
6. The camera module according to claim 1, wherein the housing (20) is provided with a liquid inlet channel (404) and a liquid outlet channel (406) parallel to the optical axis direction of the lens (10), one end of the liquid inlet channel (404) is a liquid inlet (405), and one end of the liquid outlet channel (406) is a liquid outlet (407); the shell (20) is also provided with at least one connecting channel (408) encircling the optical axis direction of the lens (10), one end of the connecting channel (408) is communicated with the liquid inlet channel (404), and the other end is communicated with the liquid outlet channel (406).
7. The camera module according to claim 6, wherein the second housing (202) includes a cylindrical body (2021), one end of the cylindrical body (2021) is a connection end, and the other end of the cylindrical body (2021) is connected to the bottom shell (2022); the liquid inlet channel (404) and the liquid outlet channel (406) are oppositely arranged on the cylindrical body (2021), and the connecting channel (408) is symmetrically arranged on the plane where the liquid inlet channel (404) and the liquid outlet channel (406) are positioned.
8. The camera module according to claim 1, wherein the second housing (202) is formed by splicing and connecting a cylindrical body (2021) and a bottom shell (2022), straight channels (4010) which are parallel to the optical axis direction of the lens (10) and are arranged at intervals are arranged on the cylindrical body (2021), a first connecting groove (2014) is arranged at the connecting end of the first housing (201), and the first connecting groove (2014) is used for conducting one end, close to the first housing (201), of the straight channels (4010) at intervals; the bottom shell (2022) is provided with a second connecting groove (2024), and the second connecting groove (2024) is used for conducting one end, close to the bottom shell (2022), of the straight channel (4010) at intervals; the spaced through channels 4010 are connected in series in sequence by conduction of the first connecting groove 2014 and the second connecting groove 2024.
9. The camera module as claimed in any one of claims 1 to 8, further comprising a spray hole (2013) oriented in the direction of the lens (10), the spray hole (2013) being provided on the first housing (201), the spray hole (2013) being in communication with the liquid channel (40) via a cleaning channel (409), the cleaning channel (409) being provided with a control valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210807200.2A CN115022521B (en) | 2022-07-09 | 2022-07-09 | Camera module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210807200.2A CN115022521B (en) | 2022-07-09 | 2022-07-09 | Camera module |
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| CN115022521A CN115022521A (en) | 2022-09-06 |
| CN115022521B true CN115022521B (en) | 2024-01-30 |
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| CN115022521A (en) | 2022-09-06 |
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