Imaging device

Abstract

The embodiment of the utility model discloses a camera device, relates to the technical field of monitoring camera shooting, and can effectively block the influence of mosquitoes on camera imaging. The camera device comprises a shell, a camera body and a fan. A containing cavity is formed in the shell, and the shell is provided with a first camera shooting window; the camera body is fixed in a containing cavity in the shell, a camera of the camera body corresponds to the first camera shooting window, an air channel is formed between the camera body and the shell, and the air channel is communicated with the first camera shooting window; and an air outlet of the fan is communicated with the air duct. The method is suitable for preventing mosquitoes from affecting camera imaging in the livestock breeding industry.

Description

Technical Field

[0001] The present application relates to the field of surveillance camera technology, and in particular to a camera device. Background Art

[0002] When the camera is in use, mosquitoes and the like may stay on the camera window or the camera head, causing the lens to be dirty and affecting the imaging effect. The existing technology often uses insect repellents, insect repellent lamps, or swing arms to drive them away.

[0003] Since insect repellents are chemical reagents, they are corrosive and will contaminate livestock food and water sources; the insect repellent light source will affect the imaging effect of the camera; the swing-arm repellent method will also affect the imaging effect and cannot repel mosquitoes continuously. Utility Model Content

[0004] In order to solve the existing problem of mosquitoes affecting camera imaging, the present application provides a camera device.

[0005] An embodiment of the present application provides a camera device, comprising: a shell, the interior of the shell having a accommodating cavity, the shell having a first camera window; a camera body, the camera body being fixed in the accommodating cavity in the shell, the camera head of the camera body corresponding to the first camera window, and an air duct being formed between the camera body and the shell, the air duct being connected to the first camera window; and a fan, the air outlet of the fan being connected to the air duct.

[0006] In a specific embodiment, the shell includes a base and a cover body; a partition portion is provided in the base, the partition portion divides the inner cavity of the base into an air inlet cavity and an air outlet cavity, and the partition portion has a through hole connecting the air inlet cavity and the air outlet cavity; the fan is fixed in the air inlet cavity; the air inlet of the fan is connected to the air inlet on the side wall of the air inlet cavity, and the air outlet of the fan corresponds to the through hole on the partition portion; the cover body is fixed at one end of the base, and the cover body and the air outlet cavity of the base form the accommodating cavity.

[0007] In a specific embodiment, the shell includes a first sub-shell and a second sub-shell that is snap-connected to the first sub-shell; a first partition portion is provided on the first sub-shell, and a second partition portion is provided on the second sub-shell; the first partition portion corresponds to the second partition portion, and the first partition portion and the second partition portion separate the inner cavity formed after the first sub-shell and the second sub-shell are snap-connected into an air inlet cavity and the accommodating cavity, and a through hole connecting the air inlet cavity and the accommodating cavity is formed between the first partition portion and the second partition portion; the fan is located in the air inlet cavity and is fixed on the first partition portion and / or the second partition portion; the air inlet of the fan is connected to the air inlet on the side wall of the air inlet cavity, and the air outlet of the fan corresponds to the through hole between the first partition portion and the second partition portion.

[0008] In a specific embodiment, a shroud is provided between the camera body and the shell; the shroud is connected to the shell, and the air duct is formed between the outer wall of the shroud and the inner wall of the shell; the camera body is fixed in the shroud; wherein the shroud has a second camera window, the camera head corresponds to the second camera window, and the second camera window corresponds to the first camera window.

[0009] In a specific embodiment, at least a portion of the outer surface of the fairing is a smooth curved surface.

[0010] In a specific embodiment, the deflector includes a first cover body and a second cover body; the outer surfaces of the first cover body and the second cover body respectively have smooth curved surfaces; the camera body is fixed in the space enclosed by the first cover body and the second cover body, and the second camera window is opened on the second cover body; the first cover body and the second cover body are respectively connected to the shell; or, the first cover body is connected to the second cover body, and at least one of the first cover body and the second cover body is connected to the shell.

[0011] In a specific embodiment, the area of ​​the ventilation cross section of the air duct gradually changes from large to small along the wind flow direction in the air duct.

[0012] In a specific embodiment, the outlet end of the air duct is located outside the field of view of the camera.

[0013] In a specific implementation, the camera body corresponds to the air outlet of the fan, and the air duct includes an annular air duct surrounding the camera body and formed between the outer surface of the camera body and the inner wall of the shell.

[0014] In a specific implementation, the air guide cover corresponds to an air outlet of the fan, and the air duct includes an annular air duct surrounding the air guide cover and formed between an outer wall of the air guide cover and an inner wall of the shell.

[0015] In a specific embodiment, the air inlet on the side wall of the air inlet cavity is provided with a dustproof net.

[0016] The camera device provided by the embodiment of the present application includes: a shell, a camera body, and a fan; wherein the shell has a accommodating cavity inside, and the shell has a first camera window; the camera body can be fixed in the accommodating cavity inside the shell, the camera head of the camera body corresponds to the first camera window, and an air duct is formed between the camera body and the shell, and the air duct is connected to the first camera window; the air outlet of the fan is connected to the air duct, so that the air blown by the fan is guided through the air duct and the wind speed is increased, and then discharged from the first camera window, thereby preventing mosquitoes from interfering with or staying on the camera, and effectively blocking the influence of mosquitoes on camera imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 An exploded schematic diagram of a camera device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the assembly of a camera device provided in an embodiment of the present application;

[0020] Figure 3 A schematic cross-sectional view of a camera device provided in an embodiment of the present application;

[0021] Figure 4 A partially enlarged schematic diagram of a camera device provided in an embodiment of the present application;

[0022] Figure 5 Another schematic cross-sectional view of the camera device provided in an embodiment of the present application.

[0023] Description of main reference numerals:

[0024] 10-camera device; 11-shell; 111-accommodating chamber; 112-first camera window; 113-base; 1131-partition; 1132-through hole; 1133-air inlet; 1134-flange; 114-cover; 12-camera body; 121-camera head; 13-fan; 14-air duct; 15-air guide cover; 151-second camera window; 152-first cover body; 153-second cover body; 161-first bolt; 162-second bolt; 163-third bolt; 164-fourth bolt. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] When the camera is in use, mosquitoes and other insects may stay on the camera, causing the lens to be dirty and affecting the imaging effect. To solve the problem of mosquitoes affecting camera imaging, Figure 1 As shown, an embodiment of the present application provides a camera device 10, which may include: a shell 11, a camera body 12, and a fan 13; wherein the shell 11 has an accommodating cavity 111 inside, and the shell 11 has a first camera window 112; the camera body 12 is fixed in the accommodating cavity 111 in the shell 11, and the camera head 121 of the camera body 12 corresponds to the first camera window 112, and an air duct 14 is formed between the camera body 12 and the shell 11, and the air duct 14 is connected to the first camera window 112; the air outlet of the fan 13 is connected to the air duct 14.

[0028] In this embodiment, the air supply of the fan 13 is introduced through the shell 11, and the internal camera body 12 is isolated from the outside, forming a physical barrier against foreign objects or mosquitoes; in addition, the first camera window 112 opened in the shell 11 not only reserves a shooting window for the camera 121, but also forms an air duct 14 between the camera body 12 and the shell 11, and the air duct 14 is connected to the first camera window 112 and the air outlet of the fan 13, so that the airflow generated by the fan 13 converges into the first camera window 112 through the air duct 14, as shown in FIG. Figure 2As shown, an air curtain is formed at the position of the first camera window 112, thereby becoming an airflow barrier for mosquitoes. Under the protective effect of the physical barrier formed by the housing 11 itself and the airflow barrier formed by the air duct 14 at the position of the first camera window 112, mosquitoes can be effectively blocked. Further, based on fluid mechanics, the shape of the air duct 14 can be optimized and designed, and a fan 13 with a corresponding wind force can be configured, so that the airflow blown out by the fan 13 is rectified by the air duct 14 and is accelerated by convergence at the outlet position, that is, the first camera window 112, thereby further improving the insect repellent effect.

[0029] The camera device 10 provided in the embodiment of the present application includes: a shell 11, a camera body 12, and a fan 13; wherein the shell 11 has an accommodating cavity 111 inside, and the shell 11 has a first camera window 112; the camera body 12 can be fixed in the accommodating cavity 111 in the shell 11, the camera head 121 of the camera body 12 corresponds to the first camera window 112, and an air duct 14 is formed between the camera body 12 and the shell 11, and the air duct 14 is connected to the first camera window 112; the air outlet of the fan 13 is connected to the air duct 14, so that the air blown by the fan 13 is guided through the air duct 14 and the wind speed is increased, and then discharged from the first camera window 112, thereby preventing mosquitoes from interfering with or staying in the camera 121, and effectively blocking the influence of mosquitoes on camera imaging.

[0030] In order to improve the air outlet effect at the position of the first camera window 112, optionally, in one embodiment of the present application, the camera body 12 corresponds to the air outlet of the fan 13, and the air duct 14 includes an annular air duct 14 formed between the outer surface of the camera body 12 and the inner wall of the shell 11 and surrounding the camera body 12. For example, the camera body 12 and the shell 11 can be customized in a way that the outer surface of the camera body 12 and the inner wall of the shell 11 are designed as a streamlined structure with a smooth curved surface, and an annular air duct 14 with a smaller wind resistance is formed between the outer surface of the camera body 12 and the inner wall of the shell 11, so as to achieve the required insect repellent wind speed at the first camera window 112. Since the annular air duct 14 is a full-through structure without an additional partition structure, the wind blown by the fan 13 has a smaller kinetic energy loss when flowing through the annular air duct 14, and after simulation and physical verification, the full-through annular air duct 14 generates a higher wind speed at the outlet end of the air duct 14, i.e., the position of the first camera window 112, than the air duct 14 with a partition structure. In addition, since the camera body 12 adopts a customized structural design, the structural space of the camera device 10 can be further optimized, and the integration of the camera device 10 and the convenience of installation and use can be improved.

[0031] Optionally, in one embodiment of the present application, the area of ​​the ventilation cross section of the air duct 14 gradually changes from large to small along the wind flow direction in the air duct 14. According to fluid dynamics and simulation analysis, the cross section of the air duct 14 is designed to have a gradually changing size from large to small along the fluid flow direction, for example Figure 3 , Figure 4 In the figure, the cross section of the air duct 14 has a minimum dimension value D1 at the outlet end of the air duct 14, which can further increase the wind speed at the outlet end of the air duct 14, that is, at the position of the first camera window 112. In addition, the cross section of the air duct 14 at the starting position is larger, which is conducive to accommodating, caching, and guiding the air supplied by the fan 13, avoiding the air supplied by the fan 13 from causing a sudden change in speed when entering the volume mutation space, generating impact or noise, etc., so that the air supplied by the fan 13 is more stable and gentle when entering the accommodating chamber 111, so that it can be smoothly guided and accelerated by the air duct 14.

[0032] In order to avoid the outlet of the air duct 14 affecting the image acquisition of the camera 121 and improve the practicality and functionality of the camera device 10, optionally, in one embodiment of the present application, the outlet of the air duct 14 is located outside the field of view of the camera 121. It can be understood that the design of the outlet of the air duct 14 avoids the visible area of ​​the camera 121, which can ensure that the camera device 10 of this embodiment does not have any impact on the camera function of the camera device 10 itself when achieving the goal of repelling insects. Figure 3 , Figure 4 The viewing angle α of the visible area of ​​the product shown is greater than 180°, and the outlet end of the air duct 14 is relatively far from the camera 121. Therefore, the tangent direction of the outlet end of the air duct 14 (simulated blowing direction) and the camera 121 can be designed to have a certain preset gap D2 to avoid affecting the field of view of the camera 121.

[0033] In order to improve the processability of the component structure of the camera device 10 and the convenience of installation, it is optional, such as Figure 1 , Figure 3As shown, in one embodiment of the present application, the shell 11 includes a base 113 and a cover body 114; a barrier portion 1131 is provided in the base 113, and the barrier portion 1131 divides the inner cavity of the base 113 into an air inlet cavity and an air outlet cavity, and the barrier portion 1131 has a through hole 1132 connecting the air inlet cavity and the air outlet cavity; the fan 13 is fixed in the air inlet cavity; the air inlet of the fan 13 is connected to the air inlet 1133 on the side wall of the air inlet cavity, and the air outlet of the fan 13 corresponds to the through hole 1132 on the barrier portion 1131; the cover body 114 is fixed at one end of the base 113, and the cover body 114 and the air outlet cavity of the base 113 form a accommodating cavity 111. The scheme of the present embodiment provides a split structure of the shell 11 along the axial direction, and the shell 11 is divided into a base 113 and a cover body 114 along the axial direction, which is not only convenient for production and processing, but also convenient for installing and configuring the camera body 12. The barrier portion 1131 arranged in the base 113 divides it into an air inlet chamber and an air outlet chamber and connects them through the through hole 1132, which not only improves the overall structural strength of the base 113, but also is beneficial to reserve a detachable installation position for the fan 13, and is also convenient for realizing the demolding design of the air outlet chamber, and processing the inner wall of the air outlet chamber into a more streamlined structure. Similarly, the independent cover body 114 is also convenient for designing and processing a streamlined inner wall structure, so that after connecting with the air outlet chamber, a accommodating chamber 111 that meets the fluid dynamic performance is formed.

[0034] Considering that different camera bodies 12 may have different shapes and structural sizes, in order to further improve the adaptability and diversity of the installation method of the camera device 10, optionally, in one embodiment of the present application, the housing 11 includes a first sub-housing 11 and a second sub-housing 11 that is snap-fitted to the first sub-housing 11; a first barrier portion 1131 is provided on the first sub-housing 11, and a second barrier portion 1131 is provided on the second sub-housing 11; the first barrier portion 1131 corresponds to the second barrier portion 1131, and the first barrier portion 1131 and the second barrier portion 1131 are connected. The inner cavity formed by the first sub-shell 11 and the second sub-shell 11 being snap-fitted together is divided into an air inlet cavity and a accommodating cavity 111, and a through hole 1132 connecting the air inlet cavity and the accommodating cavity 111 is formed between the first partition portion 1131 and the second partition portion 1131; the fan 13 is located in the air inlet cavity and is fixed on the first partition portion 1131 and / or the second partition portion 1131; the air inlet of the fan 13 is connected to the air inlet 1133 on the side wall of the air inlet cavity, and the air outlet of the fan 13 corresponds to the through hole 1132 between the first partition portion 1131 and the second partition portion 1131. This solution of the present embodiment provides another split structure of the shell 11 along the radial direction. The shell 11 can be divided into a left-right symmetrical first sub-shell 11 and a second sub-shell 11 along the radial direction, so as to facilitate the installation of a camera body 12 with a larger axial length. For example, some camera bodies 12 have more imaging lenses and a longer imaging optical path. It can be understood that the camera body 12 of this structural form adopts a left-right symmetrical shell 11, which will be more convenient for assembly or disassembly maintenance. In addition, the split structure of the shell 11 along the radial direction is also convenient for the draft design of the accommodating cavity 111, and is processed into an inner wall structure of the accommodating cavity 111 that meets the requirements of fluid dynamic performance.

[0035] Because different users have different requirements for camera functions, for example, some users may use finished cameras or cameras with special functions. Finished cameras are non-customized appearance structures, and their outer contours are often not streamlined. To solve the above problems, optional methods such as Figure 1 , Figure 3As shown, in one embodiment of the present application, a shroud 15 is provided between the camera body 12 and the shell 11; the shroud 15 is connected to the shell 11, and an air duct 14 is formed between the outer wall of the shroud 15 and the inner wall of the shell 11; the camera body 12 is fixed in the shroud 15; wherein, the shroud 15 has a second camera window 151, the camera head 121 corresponds to the second camera window 151, and the second camera window 151 corresponds to the first camera window 112. Since the camera device 10 is further provided with a deflector 15, and the deflector 15 has a preset shape, such as a streamlined outer wall structure, the camera body 12 of personalized needs can be installed and fixed in the deflector 15, and the camera 121 can capture images from the external environment through the second camera window 151 opened on the deflector 15 and the first camera window 112 opened on the shell 11 at the corresponding position. It can be understood that the deflector 15 can further improve the applicability and practicality of the camera device 10. The user can purchase a camera with corresponding functions according to actual needs and install it in the deflector 15. Regardless of the outer contour of the camera, since the deflector 15 can obtain the required structural shape at a lower cost, preferably, in one embodiment of the present application, the outer surface of the deflector 15 is at least partially a smooth arc surface, so that the outer surface of the deflector 15 is adapted to the inner wall of the shell 11 as much as possible, to ensure that the air duct 14 formed between the two meets the fluid dynamic performance, and a high-speed and stable air outlet is formed at the position of the first camera window 112 to effectively drive away mosquitoes.

[0036] Similarly, to facilitate processing and improve installation convenience, optional, such as Figure 1 , Figure 5 As shown, in one embodiment of the present application, the air deflector 15 includes a first cover body 152 and a second cover body 153; the outer surfaces of the first cover body 152 and the second cover body 153 respectively have smooth curved surfaces; the camera body 12 is fixed in the space enclosed by the first cover body 152 and the second cover body 153, and the second camera window 151 is opened on the second cover body 153; the first cover body 152 and the second cover body 153 are respectively connected to the shell 11; or, the first cover body 152 and the second cover body 153 are connected, and at least one of the first cover body 152 and the second cover body 153 is connected to the shell 11. Specifically, the first cover body 152 and the second cover body 153 can adopt a variety of connection and fixing methods according to the situation. For example, the first cover body 152 and the second cover body 153 can be connected by bolts, or can be rotatably connected by external threads and internal threads, or can be as Figure 5As shown, the first cover body 152 is designed to be connected to the base 113 of the shell 11 through the first bolt 161, the second cover body 153 is connected to the cover body 114 of the shell 11 through the second bolt 162, and then the base 113 and the cover body 114 are connected through the third bolt 163, and the camera body 12 can also be fixed inside the air duct 15 by the fourth bolt 164 or by clamping, etc., which is not limited in this embodiment.

[0037] After the air deflector 15 is adopted, in order to ensure the air outlet effect at the position of the first camera window 112, optionally, in one embodiment of the present application, the air deflector 15 corresponds to the air outlet of the fan 13, and the air duct 14 includes an annular air duct 14 formed between the outer wall of the air deflector 15 and the inner wall of the shell 11 and surrounding the air deflector 15. As mentioned above, the air deflector 15 can be designed as a streamlined structure, and a full-through annular air duct 14 is formed between the inner wall of the shell 11. Since there is no additional partition structure, the wind blown by the fan 13 has a smaller kinetic energy loss when flowing through the annular air duct 14, and the air outlet speed at the outlet end of the air duct 14, that is, the position of the first camera window 112, is higher, so as to ensure the insect repellent effect of the camera device 10.

[0038] Considering that foreign matter, dust, etc. may enter from the air inlet of the camera device 10 and affect the imaging of the air duct 14 and the camera 121, optionally, in one embodiment of the present application, the air inlet 1133 on the side wall of the air inlet cavity is provided with a dustproof net. In this embodiment, a plurality of air inlets 1133 on the side wall of the air inlet cavity may be provided along the circumference of the base 113, and ribs may be provided at adjacent air inlets 1133 to improve the structural strength. Further, considering that the camera device 10 needs to be installed at a preset position in some usage scenarios, a disc or flange 1134 may be provided at one end of the air inlet cavity of the base 113, and the camera device 10 may be hung or attached to the preset position through the mounting structure on the disc or flange 1134, such as a connecting hole, etc. In this way, the dustproof net, the housing 11, and the air curtain formed by the outlet end of the air duct 14 can form a comprehensive barrier to mosquitoes, ensuring that the imaging of the camera device 10 is not affected by mosquitoes.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The above content has described the embodiments of the present application in detail. Those skilled in the art can design and modify the device and its use within the scope of the present application according to the on-site construction conditions.

[0041] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A camera device, characterized in that: include: A housing, wherein the interior of the housing has a receiving cavity, and the housing has a first camera window; A camera body, wherein the camera body is fixed in the accommodating cavity in the shell, a camera head of the camera body corresponds to the first camera window, and an air duct is formed between the camera body and the shell, and the air duct is connected to the first camera window; A fan, wherein an air outlet of the fan is connected to the air duct.

2. The camera device according to claim 1, characterized in that The housing comprises a base and a cover; The base is provided with a barrier portion, the barrier portion divides the inner cavity of the base into an air inlet cavity and an air outlet cavity, and the barrier portion has a through hole connecting the air inlet cavity and the air outlet cavity; The fan is fixed in the air inlet cavity; the air inlet of the fan is connected with the air inlet on the side wall of the air inlet cavity, and the air outlet of the fan corresponds to the through hole on the barrier portion; The cover body is fixed at one end of the base, and the cover body and the air outlet cavity of the base form the accommodating cavity.

3. The imaging device according to claim 1, wherein: The housing comprises a first sub-housing and a second sub-housing which is snap-fitted and connected to the first sub-housing; The first sub-shell is provided with a first barrier portion, and the second sub-shell is provided with a second barrier portion; the first barrier portion corresponds to the second barrier portion, and the first barrier portion and the second barrier portion separate the inner cavity formed by the first sub-shell and the second sub-shell being buckled and connected into an air inlet cavity and the accommodating cavity, and a through hole connecting the air inlet cavity and the accommodating cavity is formed between the first barrier portion and the second barrier portion; The fan is located in the air inlet cavity and fixed on the first barrier portion and / or the second barrier portion; the air inlet of the fan is connected to the air inlet on the side wall of the air inlet cavity, and the air outlet of the fan corresponds to the through hole between the first barrier portion and the second barrier portion.

4. The imaging device according to any one of claims 1 to 3, characterized in that: A flow guide cover is provided between the camera body and the shell; The air deflector is connected to the shell, and the air duct is formed between the outer wall of the air deflector and the inner wall of the shell; The camera body is fixed in the air guide cover; Wherein, the air guide cover has a second camera window, the camera corresponds to the second camera window, and the second camera window corresponds to the first camera window.

5. The imaging device according to claim 4, characterized in that: At least a portion of the outer surface of the air deflector is a smooth curved surface.

6. The imaging device according to claim 4, characterized in that: The deflector comprises a first cover body and a second cover body; the outer surfaces of the first cover body and the second cover body respectively have smooth curved surfaces; The camera body is fixed in a space enclosed by the first cover body and the second cover body, and the second camera window is opened on the second cover body; The first cover body and the second cover body are connected to the shell respectively; or the first cover body and the second cover body are connected, and at least one of the first cover body and the second cover body is connected to the shell.

7. The imaging device according to any one of claims 1 to 3, characterized in that: The area of ​​the ventilation cross section of the air duct gradually changes from large to small along the wind flow direction in the air duct.

8. The imaging device according to any one of claims 1 to 3, characterized in that: The outlet end of the air duct is located outside the field of view of the camera.

9. The imaging device according to any one of claims 1 to 3, characterized in that: The camera body corresponds to the air outlet of the fan, and the air duct includes an annular air duct surrounding the camera body and formed between the outer surface of the camera body and the inner wall of the shell.

10. The imaging device according to claim 4, characterized in that: The air guide cover corresponds to the air outlet of the fan, and the air duct includes an annular air duct surrounding the air guide cover and formed between the outer wall of the air guide cover and the inner wall of the shell.

11. The imaging device according to claim 2 or 3, characterized in that: The air inlet on the side wall of the air inlet cavity is provided with a dustproof net.

Images