CN115022521A - Camera module - Google Patents
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- CN115022521A CN115022521A CN202210807200.2A CN202210807200A CN115022521A CN 115022521 A CN115022521 A CN 115022521A CN 202210807200 A CN202210807200 A CN 202210807200A CN 115022521 A CN115022521 A CN 115022521A
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- 239000007788 liquid Substances 0.000 claims abstract description 312
- 238000004140 cleaning Methods 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 6
- 238000005304 joining Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 description 15
- 230000017525 heat dissipation Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- 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
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- 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, 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 port of the first shell, and the circuit board is arranged in a cavity defined by the shells; 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 liquid to flow is arranged in the shell, liquid with lower temperature flows into the liquid channel from the liquid inlet and flows out from the liquid outlet, the liquid can quickly take away heat of the shell, so that the temperature of the shell is reduced, further 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 of the camera module is prevented from being reduced or damaged due to overhigh temperature.
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 Driving safety of automobiles is receiving more and more attention, and cameras for DMS (Driver Monitor System) and ADAS (Advanced Driving Assistance System) have appeared, which are installed at different positions of the vehicle (e.g., a pillar, B pillar, rear view mirror, side view mirror, etc.) to acquire photographed scenes at different angles. More remarkably, as the functions of the camera are more and more, 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 also larger and more.
The existing camera directly radiates heat passively through the shell, or the outer wall of the shell is provided with radiating fins so as to improve the passive radiating effect. But above-mentioned mode is passive heat dissipation, and the inside heat of camera casing at first will be through air transfer to casing, then gives off the outside atmosphere of casing by the inboard transmission of casing, and above-mentioned radiating process efficiency is lower to be difficult to satisfy the heat dissipation demand of camera, and the heat dissipation is bad to lead to camera performance reduction 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, which includes: the lens comprises a lens, 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 port of the first shell, and the circuit board is arranged in a cavity defined by the shells; the first housing and/or the second housing is provided with a liquid channel comprising a liquid inlet and a liquid outlet.
Further, grooves arranged at 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 channel, one end of the liquid inlet channel is a liquid inlet, and the other end of the liquid inlet channel is communicated with the first liquid channel; the second shell is provided with a liquid outlet channel, one end of the liquid outlet channel is a liquid outlet, and the other end of the liquid outlet channel is communicated with the first liquid channel. During the use, liquid enters into first liquid channel through inlet channel, because the liquid in the first cooling channel all contacts with first casing and second casing, utilizes the heat that liquid took first casing and second casing rapidly, can make whole casing temperature reduce.
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. Liquid can enter into the second liquid passage when first liquid passage internal circulation to along with the casing heat is taken away in the flow of liquid, because the regional increase of liquid distribution in the casing, better cooling effect can be realized.
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. Liquid can enter into the second liquid passage when first liquid passage internal circulation to along with the casing heat is taken away in the flow of liquid, because the regional increase of liquid distribution in the casing, better cooling effect can be realized.
Further, a third liquid channel is further arranged on the bottom shell of the second shell, 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 outlet channel through the third liquid channel in a gathering mode, and the mode is more favorable for the circular flow of the liquid.
Further, the second shell is formed by splicing and connecting a cylindrical body and a bottom shell, and a third liquid channel is formed by splicing and connecting the connecting ends of the cylindrical body and the bottom shell. The structure can reduce the manufacturing difficulty of the second shell and reduce the manufacturing cost of the shell.
Furthermore, the shell is provided with a liquid inlet channel and a liquid outlet channel which are approximately 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 further 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, flows to the connecting channel through the liquid inlet channel, finally enters into the liquid outlet channel through the connecting channel, and flows back to the liquid circulation system through 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 channel is symmetrically arranged on the plane where the liquid inlet channel and the liquid outlet channel are located. In a further technical scheme, the temperature of liquid flowing through the connecting channel, close to the liquid outlet channel, of the side wall of the shell is lower, and the heat dissipation performance of the side wall of the shell at the position can be improved.
Furthermore, the second shell is formed by splicing and connecting a cylindrical body and a bottom shell, the cylindrical body is provided with straight channels which are approximately parallel to the optical axis direction of the lens and are arranged at intervals, the connecting end of the first shell is provided with first connecting grooves, and the first connecting grooves are used for conducting one ends of the straight channels close to the first shell at intervals; the bottom shell is provided with a second connecting groove, and the second connecting groove is used for conducting one end of the straight channel close to the bottom shell at intervals; the first connecting groove and the second connecting groove are communicated to enable the spaced straight channels to be sequentially connected in series. Liquid enters from the liquid inlet and then flows through the straight channels at intervals in sequence, and the heat of the corresponding position of the shell is taken away when the liquid flows, so that the camera module is cooled. 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 all easier to process, so the embodiment also has the advantages of easy 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 formed in the first shell, the spraying hole is communicated with the liquid channel through a cleaning channel, and the cleaning channel 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 holes, and the spraying holes are formed towards the lens, so that the sprayed liquid acts on the outermost lens of the lens, the lens is cleaned, and the imaging quality of the camera module is guaranteed.
Has the advantages that: according to the camera module, the liquid channel for liquid to flow is arranged in the shell, liquid with lower temperature flows into the liquid channel from the liquid inlet and flows out from the liquid outlet, the liquid can quickly take away heat of the shell, so that the temperature of the shell is reduced, further 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 of the camera module is prevented from being reduced or damaged due to overhigh temperature.
Drawings
In order to more clearly illustrate the present invention, the following description and drawings of the present invention will be described and illustrated. It should be apparent that the drawings in the following description illustrate only certain aspects of some exemplary embodiments of the invention, and that other drawings may be derived therefrom by those skilled in the art without the exercise of inventive faculty.
Fig. 1 is a schematic view of a camera module according to a first embodiment of the present invention;
fig. 2 is a side 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 present invention;
FIG. 5 is a schematic view of a camera module with spray holes;
FIG. 6 is a schematic view of the camera module in communication with a vehicle fluid circulation system;
FIG. 7 is a schematic view of a camera module according to a second embodiment of the present invention;
FIG. 8 is a schematic view of a liquid channel of a camera module according to a second embodiment of the present invention;
fig. 9 is a side sectional view of a camera module according to a third embodiment of the present invention;
fig. 10 is a schematic view of a liquid passage of a camera module according to a third embodiment of the invention;
fig. 11 is a schematic view of a liquid passage of a camera module according to a third embodiment of the invention;
fig. 12 is a schematic view of a second housing and a liquid passage of a camera module according to a third embodiment of the invention;
fig. 13 is a schematic view of a camera module according to a fourth embodiment of the present invention;
fig. 14 is a schematic bottom view of a camera module according to a fourth embodiment of the 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 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 components represented by the respective reference numerals are listed below:
10. a lens;
20. the lens packaging device comprises a shell, 201, a first shell, 2011, a lens mounting port, 2012, a groove, 2013, a spraying 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 connecting channel 409, a cleaning channel 4010 and a straight channel;
50. 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: unless otherwise indicated, the relative arrangement of components and steps, numerical expressions and numerical values, etc., set forth in these embodiments should be construed as merely illustrative, and not as a limitation.
The use of the word "comprising" or "comprises" and the like in this disclosure is intended to mean that the elements listed before the word encompass the elements listed after the word and does not exclude the possibility that other elements may also be encompassed.
All terms (including technical or scientific terms) used herein 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.
For components, specific models of components, and like parameters, interrelationships between components, and control circuitry not described in detail in this section, can be considered techniques, methods, and apparatus known to those of ordinary skill in the relevant art, but where appropriate, should be considered as part of the specification.
The embodiment of the invention provides a camera module, which comprises:
a lens 10, which is generally composed of a plurality of lens pieces arranged along an optical axis and a lens barrel in which the lens pieces are mounted;
a circuit board 30 including a photosensitive element for image formation;
the shell 20, the shell 20 includes a first shell 201 and a second shell 202, and the connection ends of the first shell 201 and the second shell 202 are connected in a split manner; the lens 10 is installed at the position of the lens installation port 2011 of the first shell 201, and the circuit board 30 is installed in a cavity enclosed by the shell 20; in a first 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 specific embodiment, the second housing 202 is provided with a liquid passage 40, and the liquid passage 40 includes a liquid inlet 405 and a liquid outlet 407. In a third particular 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 separately perform liquid flow, 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 are communicated with each other, and liquid can flow between the first housing and the second housing.
According to the camera module, the liquid channel for liquid to flow is arranged in the shell, liquid with lower temperature flows into the liquid channel from the liquid inlet and flows out from the liquid outlet, the liquid can quickly take away heat of the shell, so that the temperature of the shell is reduced, further 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 of the camera module is prevented from being reduced or damaged due to overhigh temperature. In the embodiment shown in fig. 6, the camera module is mounted on the vehicle, and 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.
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 the imaging quality of the camera module is reduced when more dust is accumulated, the embodiment is further improved, the camera module is further provided with a spraying hole 2013 facing the direction of the lens 10 on the first shell 201 (as shown in fig. 5), the spraying hole 2013 is communicated with the liquid channel 40 through a cleaning channel 409, and the cleaning channel 409 is provided with a control valve. When the control valve was opened, the liquid in the liquid passage was through wasing the passageway and spraying the hole blowout, owing to spray the hole and set up towards the camera lens direction, the liquid that sprays out (having wash and scrubbing effect) is used in the outer lens of camera lens to the realization is to the washing of this lens, guarantees the imaging quality of camera module.
Example 1
A camera module according to embodiment 1 of the present invention is described with reference to fig. 1 to 6, which includes: the lens 10, the circuit board 30 and the casing 20, the casing 20 includes a first casing 201 and a second casing 202, and the connection ends of the first casing 201 and the second casing 202 are connected in a split manner; the lens 10 is installed at the position of the lens installation port 2011 of the first shell 201, and the circuit board 30 is installed in a cavity enclosed by the shell 20; the grooves 2012 arranged 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; in the first embodiment, the connecting end of the first casing 201 is provided with a groove 2012, the connecting end of the second casing is a planar structure, and the sealing of the connecting position of the casings is realized by arranging a sealing gasket and a sealant at the connecting position of the first casing and the second casing, or welding the connecting position of the first casing and the second casing. Another alternative structure is as shown in fig. 3 and 4, a groove 2012 is provided at the connection end of the first casing 201, the connection end of the second casing has a flange 2023, a liquid inlet channel and a liquid outlet channel are provided on the flange, the port communicates with the first liquid channel, and the connection position of the first casing and the second casing is sealed by arranging a sealing gasket and a sealant at the connection position of the first casing and the second casing, or welding the connection position of the first casing and the second casing. In the second embodiment, the connecting end of the second housing 202 is provided with a groove 2012, and the connecting end of the first housing is a planar structure. In another embodiment, the first shell and the second shell are both provided with grooves, and the positions of the grooves correspond to each other, and after the first shell and the second shell are butted, the grooves are spliced to form the 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 housing 202 has 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 connected to 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, liquid enters the first liquid channel through the liquid inlet channel, and because the liquid in the first cooling channel is contacted with both the first shell and the second shell, the heat of the first shell and the second shell is taken away quickly by the liquid, so that the temperature of the whole shell is reduced, the heat emitted by the circuit board in the shell is taken away quickly, 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 where the liquid is 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, the first housing 201 is provided with a second liquid passage 402, and one end of the second liquid passage 402 is communicated with the first liquid passage 401; and/or, the second housing 202 is provided with a second liquid passage 402, and one end of the second liquid passage 402 is communicated with the first liquid passage 401. In the embodiment shown in fig. 2 and 4, only one end of the second liquid passage 402 is communicated with the first liquid passage, and when the liquid circulates in the first liquid passage, the liquid enters the second liquid passage and carries away the heat of the shell along with the flow of the liquid, so that a better cooling effect can be realized due to the increase of the liquid distribution area in the shell.
Example 2
A camera module according to embodiment 2 of the present invention is described with reference to fig. 7 and 8, and the basic structure of the camera module of this embodiment 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 case 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 in 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 channel 403, and the other end of the second liquid channel 402 is communicated with the third liquid channel 403; the liquid outlet passage 406 is communicated 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, the liquid is conveyed to the second liquid channel through the first liquid channel, and then the liquid flows to the liquid outlet channel through the collection of the third liquid channel, and the mode is more favorable for the circular flow of the liquid.
The cylindrical body 2021 and the bottom case 2022 of the second housing 202 may be of an integral structure, for example, manufactured by machining or casting, but have the disadvantages of high manufacturing difficulty and high cost, in order to make the manufacturing of the second housing easier and reduce the cost, the second housing 202 is formed by splicing and connecting the cylindrical body 2021 and the bottom case 2022 (bonding, welding, bolt connection, ensuring the sealing property of the connection surface), and the connection end of the cylindrical body 2021 and the bottom case 2022 is spliced and formed into the third liquid passage 403. In the first embodiment, the connecting end of the cylindrical body 2021 is provided with a groove, and the connecting end of the bottom case 2022 is a planar structure. In the second embodiment, the connecting end of the bottom case 2022 is provided with a groove, and the connecting end of the cylindrical body 2021 is of a planar structure. In another embodiment, the cylindrical body 2021 and the bottom case 2022 are both provided with grooves at corresponding positions, and after the cylindrical body and the bottom case 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, which includes: the lens 10, the circuit board 30 and the casing 20, the casing 20 includes a first casing 201 and a second casing 202, and the connection ends of the first casing 201 and the second casing 202 are connected in a split manner; the lens 10 is installed at the position of the lens installation port 2011 of the first shell 201, and the circuit board 30 is installed in a cavity enclosed by the shell 20; the housing 20 is provided with a liquid inlet channel 404 and a liquid outlet channel 406 which are substantially parallel to the optical axis direction of the lens 10, and the liquid inlet channel 404 and the liquid outlet channel 406 may be parallel to the optical axis direction of the lens 10, or may form an included angle larger than zero and smaller than 30 degrees with the optical axis of the lens. 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 further has at least one connecting channel 408 surrounding the optical axis of the lens 10, and one end of the connecting channel 408 is connected to the liquid inlet channel 404 and the other end is connected to the liquid outlet channel 406. When the connecting channels 408 are plural, they are preferably arranged in parallel with 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, flows to the connecting channel through the liquid inlet channel, finally enters into the liquid outlet channel through the connecting channel, and flows back to the liquid circulation system through the liquid outlet channel. The liquid that the circulation flows can take away the casing heat rapidly, makes the casing temperature reduce, and then takes away the heat that gives off by the circuit board in the casing rapidly, reduces the temperature in the casing, makes the circuit board be in the environment that the temperature is suitable, avoids camera module because the high temperature and performance decline or damage.
In the embodiment shown in fig. 9 and 10, the housing is a rectangular parallelepiped, 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, since the side wall of the housing near the liquid outlet channel 406 is closer to the flowing time of the liquid, the temperature of the liquid is increased after absorbing heat, and the heat dissipation capability of the liquid is reduced, the heat dissipation effect of the side wall of the housing near the liquid outlet channel is poor, and the heat dissipation effect of the inner space of the housing corresponding to the side wall of the housing is poor. Therefore, as shown in fig. 12, the second housing 202 includes a cylindrical body 2021, one end of the cylindrical body 2021 is a connecting end, and the other end of the cylindrical body 2021 is connected to the 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 improvement, the temperature of the liquid flowing through the connecting channel of the side wall of the shell close to the liquid outlet channel in the improved technical scheme is lower, and the heat dissipation performance of the side wall of the shell at the position can be improved.
In order to clean and remove dust on the surface of the outermost lens of the lens, the above embodiment is further improved, the camera module further comprises a spraying hole facing the direction of the lens 10 on the first housing 201, the spraying 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 cleaning channel is arranged between the liquid inlet channel and the liquid outlet channel, one end of the cleaning channel is communicated with the liquid outlet channel, and the other end of the cleaning channel extends towards the spraying hole. In fig. 10, liquid enters from the liquid inlet channel, and after flowing through the connecting channel, the liquid flows out from the liquid outlet channel, and the liquid in the liquid outlet channel cannot enter into the cleaning channel because the control valve closes. 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, the liquid can enter from the liquid outlet channel and flow out from the liquid inlet channel in the manner shown in fig. 11. In the liquid circulation mode, the control valve is opened, and liquid respectively enters the liquid outlet channel and the spraying channel and is sprayed out of the camera lens through the spraying hole communicated with the spraying channel.
Example 4
A camera module according to embodiment 4 of the present invention is described with reference to fig. 13 to 17, which includes: a lens (not shown), a circuit board 30 and a housing 20, wherein the housing 20 comprises a first housing 201 and a second housing 202, and connecting ends of the first housing 201 and the second housing 202 are connected in a split manner; the lens 10 is installed at the position of the lens installation port 2011 of the first shell 201, and the circuit board 30 is installed in a cavity enclosed by the shell 20; the second housing 202 is formed by joining a cylindrical body 2021 and a bottom case 2022, the cylindrical body 2021 is provided with straight channels 4010 which are substantially parallel to the optical axis direction of the lens 10 and are arranged at intervals, and the straight channels 4010 may be parallel to the optical axis direction of the lens 10 or form an included angle greater than zero and smaller than 30 degrees with the optical axis of the lens. The connecting end of the first housing 201 is provided with a first connecting groove 2014, and the first connecting groove 2014 is communicated with one end of the straight channel 4010 close to the first housing 201 at intervals; the bottom case 2022 is provided with a second connecting groove 2024, and the second connecting groove 2024 is spaced to connect one end of the straight channel 4010 close to the bottom case 2022; the alternate straight channels 4010 are sequentially connected in series by the conduction of the first connection slot 2014 and the second connection 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 all easier to process, so the embodiment also has the advantages of easy manufacturing and processing and low cost.
As shown in fig. 16 and 17, the cylindrical body is a rectangular parallelepiped structure, and two straight channels are respectively disposed on four side walls of the cylindrical body (the number of the straight channels in the drawings is only schematic, and the specific number of the straight channels should be determined according to the heat dissipation requirement), as shown in fig. 15, the first connecting groove 2014 of the first housing 201 is an L-shaped structure, and the first connecting groove connects the adjacent straight channels on two adjacent side walls of the cylindrical body. As shown in fig. 14, the second connecting grooves 2024 of the bottom case 2022 are linear structures, the number of the second connecting grooves is three, and the second connecting grooves correspond to the positions of the straight passages on the three side walls of the cylindrical body respectively (two straight passages on one side wall are not communicated by the second connecting grooves), and each second connecting groove is communicated with two adjacent straight passages on the same side wall of the cylindrical body; in the structure, the side wall of the cylindrical body, which does not correspond to the second connecting groove, is provided with two straight passages, wherein one straight passage is used as a liquid inlet passage and is communicated with a corresponding liquid inlet (405) on the bottom shell; the other straight channel is used as a liquid outlet channel and is communicated with a corresponding liquid outlet (4057. the liquid enters from the liquid inlet and then flows through the straight channels at intervals in sequence, and the 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-mentioned embodiments are only for illustrating the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can modify, replace, combine and cover the technical solutions and their inventive concepts within the technical scope of the present invention.
Claims (10)
1. The utility model provides a camera module which characterized in that includes: the lens comprises a lens (10), a circuit board (30) and a 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 splicing manner; the lens (10) is arranged at a lens mounting port (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) is provided with a liquid channel (40), the liquid channel (40) comprising a liquid inlet (405) and a liquid outlet (407).
2. The camera module according to claim 1, wherein the grooves (2012) provided at the connecting end of the first housing (201) and/or the connecting end of the second housing (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).
3. The camera module according to claim 2, wherein the first housing (201) is provided with a second liquid passage (402), and one end of the second liquid passage (402) is communicated with the first liquid passage (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).
4. The camera module according to claim 2, wherein the second housing (202) comprises a cylindrical body (2021), one end of the cylindrical body (2021) is a connecting 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 disposed in a bottom case (2022) of the second housing (202).
5. The camera module according to claim 4, 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) is communicated with the third liquid passage (403); the liquid outlet channel (406) is communicated with the third liquid channel (403).
6. The camera module according to claim 5, wherein the second housing (202) is formed by splicing and connecting a cylindrical body (2021) and a bottom shell (2022), and the connecting end of the cylindrical body (2021) and the bottom shell (2022) is spliced and formed into the third liquid channel (403).
7. 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) which are substantially parallel to the optical axis 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 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 of the connecting channel is communicated with the liquid outlet channel (406).
8. The camera module according to claim 7, wherein the second housing (202) comprises a cylindrical body (2021), one end of the cylindrical body (2021) is a connecting 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 located.
9. The camera module according to claim 1, wherein the second housing (202) is formed by joining a cylindrical body (2021) and a bottom housing (2022), the cylindrical body (2021) is provided with straight channels (4010) which are substantially parallel to the optical axis direction of the lens (10) and are arranged at intervals, the connecting end of the first housing (201) is provided with a first connecting groove (2014), and the first connecting groove (2014) is arranged to conduct one end of the straight channel (4010) close to the first housing (201) at intervals; the bottom shell (2022) is provided with a second connecting groove (2024), and the second connecting groove (2024) conducts one end of the straight channel (4010) close to the bottom shell (2022) at intervals; the spaced straight channels (4010) are connected in series in sequence by the conduction of the first connection slot (2014) and the second connection slot (2024).
10. The camera module according to any of claims 1-9, further comprising a spray hole (2013) facing the lens (10), wherein the spray hole (2013) is disposed on the first housing (201), the spray hole (2013) communicates with the liquid channel (40) through a cleaning channel (409), and the cleaning channel (409) is 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 |
|---|---|---|---|
| CN202210807200.2A CN115022521B (en) | 2022-07-09 | 2022-07-09 | Camera module |
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| CN115022521A true CN115022521A (en) | 2022-09-06 |
| CN115022521B CN115022521B (en) | 2024-01-30 |
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| CN202210807200.2A Active CN115022521B (en) | 2022-07-09 | 2022-07-09 | Camera module |
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| CN115022521B (en) | 2024-01-30 |
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