Shell and three-dimensional scanner

Abstract

The utility model provides a shell and a three-dimensional scanner. The shell is applied to the situation that the two ends of the shell are used for being connected with a first component and a second component of the three-dimensional scanner respectively, and an air inlet and an air outlet are formed in the connecting position of the shell and the second component; an active heat dissipation piece can be installed in the shell and used for controlling air to enter the cavity from the air inlet and to be exhausted out of the shell from the air outlet. The oral cavity three-dimensional scanner comprises a scanning head, a power supply unit, a shell and an active heat dissipation piece, the scanning head and the power supply unit are connected to the two ends of the shell respectively, and an air inlet and an air outlet are formed in the joint of the shell and the power supply unit. And the active heat dissipation piece is arranged in the shell and used for controlling air to enter the shell from the air inlet and to be discharged out of the shell from the air outlet. The air inlet and the air outlet are formed in the position, close to the second component, of the shell, so that air flow in the shell is not affected when the shell is wrapped.

Description

Technical Field

[0001] The present application relates to three-dimensional measurement devices, and particularly to a housing and a three-dimensional scanner. Background Art

[0002] For the protection of patients and medical staff, devices and instruments that are touched during medical examinations or other operations will be disinfected or otherwise antibacterial treated. For example, in the application scenario of an oral three-dimensional scanner, since the oral three-dimensional scanner cannot be fully immersed in disinfectant, it is necessary to wrap the oral three-dimensional scanner with a protective film such as a blue film before operation. When wrapped with a protective film, the protective film is likely to block the air inlet / outlet on the body of the device, and after long-term use, heat accumulation will occur inside the device, causing the device to crash or even irreversible damage to the device. Utility Model Content

[0003] In view of this, the present application provides a housing and a three-dimensional scanner.

[0004] Specifically, the present application is implemented through the following technical solutions:

[0005] In a first aspect of the present application, a housing is provided. The housing is applied to a three-dimensional scanner, and both ends of the housing are used to be respectively connected to a first component and a second component of the three-dimensional scanner. An air inlet and an air outlet are provided at the connection between the housing and the second component; an active heat dissipation component can be installed inside the housing, and the active heat dissipation component is used to control air to enter the housing from the air inlet and to discharge from the air outlet of the housing.

[0006] In a second aspect of the present application, a three-dimensional scanner is provided. The three-dimensional scanner includes a scanning head, a power supply unit, a housing, and an active heat dissipation component; the scanning head and the power supply unit are respectively connected to both ends of the housing, and an air inlet and an air outlet are provided at the connection between the housing and the power supply unit; the active heat dissipation component is arranged inside the housing and is used to control air to enter the housing from the air inlet and to discharge from the air outlet of the housing.

[0007] Through the above solutions, the present application has at least the following beneficial effects:

[0008] By providing an air outlet and an air inlet at the power supply unit, when the housing is wrapped, a complete air circulation can still be carried out to dissipate heat from the components inside the housing. Since both the air outlet and the air inlet are provided at one end far from the scanning head, wrapping the seam between the scanning head and the housing of the three-dimensional scanner with a blue film can penetrate into cavities such as the oral cavity, taking into account both antibacterial and heat dissipation. Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of a housing shown in an exemplary embodiment of the present application;

[0010] Figure 2 It is a schematic diagram of the positions of the air inlet and outlet of a housing shown in an exemplary embodiment of the present application;

[0011] Figure 3 It is a schematic structural diagram of a 3D scanner shown in an exemplary embodiment of the present application;

[0012] Figure 4 It is a schematic installation diagram of a heat dissipation plate shown in an exemplary embodiment of the present application;

[0013] Figure 5 It is a schematic diagram of the internal composition of a 3D scanner shown in an exemplary embodiment of the present application;

[0014] Figure 6 It is a schematic structural diagram of a heat dissipation plate shown in an exemplary embodiment of the present application;

[0015] Figure 7 It is a schematic structural diagram of a power supply unit shown in an exemplary embodiment of the present application;

[0016] Figure 8 It is a schematic diagram of the wrapping range of a blue film shown in an exemplary embodiment of the present application.

[0017] Reference numerals in the drawings:

[0018] 3D scanner 10;

[0019] Housing 100; air inlet 1001; air outlet 1002; connection part 1003; first air chamber 1004; second air chamber 1005;

[0020] First component 101; second component 102; active heat dissipation member 103; scanning head 104; power supply unit 105;

[0021] Heat dissipation plate 106; communication part 1061; heat dissipation fins 1062;

[0022] Control board 107; laser module 108; camera module 109; lighting module 110. Detailed implementation manners

[0023] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0024] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a", "the", and "said" used in this application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0026] An oral three-dimensional scanner is an advanced medical device used to obtain three-dimensional images of oral structures. By utilizing advanced optical, laser, or other sensing technologies, it can quickly and precisely capture the shape, structure, and color information inside the oral cavity. These scanners are widely used in fields such as dentistry, oral surgery, and orthodontics, providing doctors with more detailed and comprehensive oral images, which helps in formulating accurate treatment plans and improving treatment effects.

[0027] Compared with the traditional impression method, the oral three-dimensional scanner is reusable, more comprehensive, and faster. However, due to the reusable nature of the oral three-dimensional scanner, it may come into contact with saliva, blood, or other body fluids when scanning a patient's oral structure. These body fluids may carry pathogens, including bacteria and viruses. To reduce the risk of cross-infection caused by these viruses and bacteria and ensure the safety of patients and medical staff, a protective film (usually blue or other colors) is usually used to wrap the oral three-dimensional scanner, so that the film can be replaced between each patient to avoid cross-infection between different patients.

[0028] At the same time, since the optical components, control boards, etc. inside the oral three-dimensional scanner generate heat during operation, heat dissipation is required. Traditional oral three-dimensional scanners have air inlets on the side wall of the oral scan. The air inlets are easily covered by the blue film or other covering materials, which may cause heat accumulation inside the device, thereby affecting the normal operation (such as overheating) and lifespan of the device.

[0029] Based on this, this application proposes a housing and a three-dimensional scanner. Among them, refer to Figure 1, the housing is applied to a 3D scanner. Both ends of the housing 100 are used to be connected to the first component 101 and the second component 102 of the 3D scanner respectively. An air inlet 1001 and an air outlet 1002 are provided at the connection between the housing 100 and the second component 102; An active heat dissipation component 103 can be installed inside the housing 100, and the active heat dissipation component 103 is used to control air to enter the housing 100 from the air inlet 1001 and to discharge from the air outlet 1002 out of the housing 100.

[0030] Through the above solution, both the air inlet 1001 and the air outlet 1002 on the housing 100 are arranged at the connection 1003 between the second component 102 and the housing 100. Therefore, when both the first component 101 and the housing 100 are partially wrapped by a blue film (for example, the blue film wraps the joint between the first component 101 and the housing 100), the device applying the housing 100 can also perform normal air exchange and heat dissipation.

[0031] It can be understood that the 3D scanner can be an oral scanner, a cochlear scanner, an industrial product inner cavity scanner (such as scanning areas like holes), or other types of 3D scanners. Therefore, the housing 100 is also applicable to any kind of 3D scanner, and no limitation is made thereto.

[0032] 3D scanners that can be used for three-dimensional imaging inside the human body cavity all need to be isolated to maintain hygiene. Therefore, there are all the technical problems to be solved in this application. Correspondingly, the solution of this application can also be applied to any 3D scanner that can be used for three-dimensional imaging inside the human body cavity and solve the technical problems existing in its application process.

[0033] In different devices, the first component 101 and the second component 102 may be different components. When their functions do not affect the application of the housing 100, the housing 100 provided in this application can be applied.

[0034] On the basis of the above solution, in one embodiment, referring to Figure 2 , the connection 1003 between the second component 102 and the housing 100 is located between the air inlet 1001 and the air outlet 1002, and the second component 102 is also used to isolate the airflow inhaled from the air inlet 1001 and the airflow blown out from the air outlet 1002.

[0035] Since the connection 1003 between the second component 102 and the housing 100 is located between the air inlet 1001 and the air outlet 1002, the second component 102 plays an isolation role for the air inlet 1001 and the air outlet 1002. When the hot air after contacting the heat source is blown out from the air outlet 1002 under the action of the active heat dissipation component 103, due to the isolation of the second component 102, it is difficult for the blown hot air to be captured by the air inlet 1001, thereby reducing the probability of the hot air re-entering the housing 100 and improving the heat dissipation effect.

[0036] In the present application, the second component may be a power supply unit for powering the 3D scanner. The power supply unit may be a battery or a connection cable harness. Therefore, the 3D scanner may be a wireless 3D scanner or a wired 3D scanner.

[0037] Correspondingly, referring to Figure 3 , the present application further provides a 3D scanner 10, which includes a scanning head 104, a power supply unit 105, a housing 100, and an active heat dissipation member 103; the scanning head 104 and the power supply unit 105 are respectively connected to two ends of the housing 100, and an air inlet 1001 and an air outlet 1002 are provided at a connection portion 1003 between the housing 100 and the power supply unit 105; the active heat dissipation member 103 is disposed inside the housing 100 and is used to control the circulation of air entering the housing 100 from the air inlet 1001 and discharging from the air outlet 1002.

[0038] Through the above solution, both the air inlet 1001 and the air outlet 1002 are provided at the connection portion 1003 between the housing 100 and the power supply unit 105, and it is difficult for both the air inlet 1001 and the air outlet 1002 to be blocked by a blue film or other films. Therefore, smooth operation of the air duct driven by the active heat dissipation member 103 inside the cavity can be achieved. The smoothness of the air duct is beneficial to maintaining equipment stability, maintaining performance, extending the lifespan, avoiding triggering of overheat protection, and improving work efficiency. An effective heat dissipation system helps prevent the equipment from overheating, keeps the internal temperature within a safe range, thereby improving the reliability and continuous operation of the in-cavity scanner. At the same time, smoothly discharging the additional heat passively generated by components (such as heat generated by resistors and other non-purposefully generated heat) helps the actively heating elements accurately control the temperature inside the cavity and maintain a relatively suitable working environment for the 3D scanner 10.

[0039] It can be understood that when the housing 100 is used for the 3D scanner 10, the first component 101 can be understood as the scanning head 104, and the second component 102 can be understood as the power supply unit 105.

[0040] In the present application, the power supply unit 105 may be a battery or a connection cable harness. When the power supply unit is a battery, the 3D scanner is a wireless 3D scanner; when the power supply unit is a connection cable harness, the 3D scanner is a wired 3D scanner.

[0041] Such as Figure 3 , Figure 4 , Figure 5 shown, the power supply unit 105 is taken as a connection cable harness as an example, but it is not used to limit the present application; again, such as Figure 7As shown, the power supply unit 105 can also be a battery 111. In any embodiment of the present application, as an exemplary implementation of the power supply unit: the connection wire harness and the battery can be interchanged, and the solution of any one of the embodiment manners should fall within the protection scope of the present application.

[0042] It can be understood that the material, shape, and packaging form of the battery can be changed according to actual needs, and the present application does not make any restrictions. For example, lithium iron phosphate material, ternary lithium material, and square, circular, and other shapes can all be used in the present application.

[0043] By providing an air outlet 1002 and an air inlet 1001 at the power supply unit 105, when the seam between the scanning head 104 and the housing 100 is wrapped, a complete air circulation can still be carried out to dissipate heat from the components inside the housing 100. Since both the air outlet 1002 and the air inlet 1001 are provided at one end far from the scanning head 104, the three-dimensional scanner 10 that uses a blue film to wrap the seam between the scanning head 104 and the housing 100 can extend deep into the cavity, and at the same time can prevent pollutants such as saliva, mucus, and water from entering the scanner and ensure heat dissipation. Please refer to Figure 8 , Figure 8 exemplarily shows the wrapping range of the blue film, Figure 8 It can be seen that the blue film wraps the seam between the scanning head 104 and the housing 100 at the same time.

[0044] The embodiment solution of the housing 100 is also applicable to the three-dimensional scanner 10. Therefore, in one embodiment, refer to Figure 2 and Figure 3 , the connection part 1003 between the power supply unit 105 and the housing 100 is located between the air inlet 1001 and the air outlet 1002, and the power supply unit 105 is also used to isolate the air flow inhaled from the air inlet 1001 and the air flow blown out from the air outlet 1002.

[0045] In one embodiment, refer to Figure 4 , the three-dimensional scanner 10 may further include a heat dissipation plate 106 provided inside the housing 100; the heat dissipation plate 106 is used for heat dissipation; the edge of the heat dissipation plate 106 fits against the inner wall of the housing 100, and the heat dissipation plate 106 divides the internal space of the housing 100 into a first air chamber 1004 and a second air chamber 1005. The first air chamber 1004 is communicated with the outside of the housing 100 through the air inlet 1001, and the second air chamber 1005 is communicated with the outside of the housing 100 through the air outlet 1002; the heat dissipation plate 106 includes a communication part 1061 away from the tail, and the communication part 1061 is used for communicating the first air chamber 1004 and the second air chamber 1005; the active heat dissipation member 103 is located in the first air chamber 1004 or the second air chamber 1005, and the active heat dissipation member 103 is located between the communication part 1061 and the tail.

[0046] Through the heat dissipation design of the above solution, the heat dissipation plate 106 is horizontally placed inside the housing 100, fits against the inner wall of the housing 100, forms a first air chamber 1004 and a second air chamber 1005, and the active heat dissipation component 103 is located between the communication part 1061 and the tail (the connection part 1003 between the power supply unit 105 and the housing 100).

[0047] Figure 4 The communication part 1061 in Figure 4 is only an exemplary schematic diagram. When it can play the role of connecting the first air chamber 1004 and the second air chamber 1005, it can be used as the communication part 1061. The number of communication parts 1061 can be one or more. For example,

[0048] shows two communication parts 1061. The shape of the communication part 1061 can be square, circular or other processable shapes, all of which can be used to connect the first air chamber 1004 and the second air chamber 1005.

[0049] Taking the active heat dissipation component 103 located in the second air chamber 1005 and the active heat dissipation component 103 blowing air towards the air outlet 1002 as an example, when the active heat dissipation component 103 rotates, it drives the air in the second air chamber 1005 to flow outwards, and the air pressure in the second air chamber 1005 decreases. At this time, since the communication part 1061 connects the first air chamber 1004 and the second air chamber 1005, the air in the first air chamber 1004 flows towards the second air chamber 1005 due to the pressure difference. Similarly, since the first air chamber 1004 is connected to the air inlet 1001, the external air flows into the first air chamber 1004, forming a complete air circulation of external (cold air) → air inlet 1001 → first air chamber 1004 → communication part 1061 → second air chamber 1005 → air outlet 1002 → external (hot air), thus completing the heat dissipation of the interior of the housing 100.

[0050] Correspondingly, in another embodiment, taking the active heat dissipation component 103 located in the first air chamber 1004 and the active heat dissipation component 103 sucking air from the air inlet 1001 as an example, when the active heat dissipation component 103 rotates, it drives the external air into the first air chamber 1004, and the air pressure in the first air chamber 1004 increases. At this time, since the communication part 1061 connects the first air chamber 1004 and the second air chamber 1005, the air in the first air chamber 1004 flows into the second air chamber 1005 due to the pressure difference, and the air pressure in the second air chamber 1005 increases. Further, since the second air chamber 1005 is connected to the air outlet 1002, the air in the second air chamber 1005 also flows to the outside through the air outlet 1002. Similarly, a complete air circulation of external (cold air) → air inlet 1001 → first air chamber 1004 → communication part 1061 → second air chamber 1005 → air outlet 1002 → external (hot air) can be formed to complete the heat dissipation of the interior of the housing 100.

[0051] In one embodiment, the 3D scanner 10 may further include an optical module. The scanning head 104 includes a transparent window, and the optical module is configured to obtain spatial data or color data inside the cavity through the transparent window; the optical module is in contact with the heat dissipation plate 106.

[0052] During the air flow, the decrease in the temperature of the heat dissipation plate 106 will also carry out the heat of the components in contact with the heat dissipation plate 106, such as the optical module, to achieve the heat dissipation effect on the optical module.

[0053] Exemplarily, in the 3D scanner 10, the heat dissipation plate 106 may further include heat dissipation fins 1062. By providing the heat dissipation fins 1062 to increase the contact area between the heat dissipation plate 106 and the air flow, according to the positive correlation between the contact area and the heat dissipation effect, the heat exchange ability between the heat dissipation plate 106 and the air can be effectively increased, that is, the heat dissipation ability of the heat dissipation plate 106 can be increased.

[0054] In some embodiments, the 3D scanner 10 may further include a control board 107, and the control board 107 is configured to control the operation of the components in the 3D scanner 10. Since the heat dissipation plate 106 occupies a relatively large space, based on considering the space and the heat dissipation effect, one of the heat dissipation fins 1062 and the control board 107 is located in the first air chamber 1004, and the other is located in the second air chamber 1005.

[0055] In the present application, the power supply unit 105 can transmit a power supply signal and / or a data signal. Whether transmitting a power supply signal or a data signal, the power supply unit 105 is electrically connected to the control board 107 to supply power / transmit signals to the control board 107 and the components connected to the control board 107.

[0056] When the functions of the power supply unit 105 are different, it can also be called by other names, such as power cord, data line, power supply line, etc. When the names are different but the functions are the same, it still falls within the protection scope of this application.

[0057] In one embodiment, the 3D scanner 10 may include a control board 107, the control board 107 is located in the first air chamber 1004, and the heat dissipation fins 1062 and the active heat dissipation component 103 are located in the second air chamber 1005.

[0058] The airflow near the active heat dissipation component 103 is more concentrated under the constraint of the active heat dissipation component 103, and the airflow near the active heat dissipation component 103 will not be blocked by other components. Therefore, when the heat dissipation fins 1062 and the active heat dissipation component 103 are located in the same air chamber, the heat dissipation efficiency of the heat dissipation fins 1062 is relatively high.

[0059] In this application, any component that can be used for 3D scanning in the 3D scanner 10 may include, for example, one or more of a camera module 109, an illumination module 110, and a laser module 108 in the optical module.

[0060] As in one embodiment, refer to Figure 5 , the 3D scanner 10 may include a housing 100, an active heat dissipation component 103, a scanning head 104, a power supply unit 105, a heat dissipation plate 106, a control board 107, a camera module 109, a laser module 108, and an illumination module 110. Among them, the control board 107, the camera module 109, the laser module 108, and the illumination module 110 are respectively fixed on the heat dissipation plate 106, and the heat dissipation plate 106 is provided with heat dissipation fins 1062. The active heat dissipation component 103 on the heat dissipation plate 106 plays a role in promoting the airflow. Referring to the content of the previous embodiment, through the communication part 1061, the active heat dissipation component 103 drives the air flow in the first air chamber 1004 and the second air chamber 1005 formed by isolating the heat dissipation plate 106, directly cools the heat dissipation plate 106 and the components on the air flow path (such as Figure 5 the control board 107 at the exemplary installation position in

[0061] In one embodiment, the heat dissipation plate 106 and the heat dissipation fins 1062 may be integrally formed. The integrally formed structure is more firm, and the heat exchange efficiency between the heat dissipation fins 1062 and the heat dissipation plate 106 is higher.

[0062] Since the 3D scanner 10 is a handheld device, in order to reduce the weight as much as possible and ensure a good heat dissipation effect, the heat dissipation plate 106 may be made of aluminum.

[0063] An exemplary heat dissipation plate 106 is as Figure 6 shown, forming as Figure 6For the air duct shown, cold air enters from the side of the heat dissipation plate 106 where the active heat dissipation component 103 is not installed, reaches the side of the heat dissipation plate 106 where the active heat dissipation component 103 is installed through the communication part 1061, and is blown out of the housing 100 by the active heat dissipation component 103 after passing through the integrally formed heat dissipation fins 1062.

[0064] Based on any of the above embodiments, the active heat dissipation component 103 in the 3D scanner 10 can be a turbo fan or an axial flow fan. The advantages of a turbo fan compared to an ordinary fan in a heat dissipation system are higher air volume and static pressure, as well as lower noise generation, which can provide better heat dissipation effects and maintain a relatively quiet working environment. And turbo fans are usually designed with smaller and denser air outlets 1002, which is also one of the reasons for being able to generate higher static pressure and air volume. While improving the heat dissipation efficiency, the smaller air outlets 1002 of the turbo fan are more suitable for the air outlets 1002 opened on the housing 100 of the small device 3D scanner 10, and the turbo fan does not occupy a large space and does not cause an increase in the size of the 3D scanner 10.

[0065] In any embodiment of the present application, the scanning head 104 meets the biocompatibility requirements and can be disinfected by high-temperature steam or soaked in disinfectant solution.

[0066] Based on any of the above embodiments, appropriate deformations can be made, and the deformed solutions should also fall within the protection scope of the present application. For example, the air flow direction in the air duct inside the housing 100 can be changed by changing the air outlet direction of the active heat dissipation component 103.

[0067] In an exemplary embodiment of the present application, the 3D scanner 10 can further include a bushing and a sealing ring, and the connection between the scanning head 104 and the housing 100 can be sealed through the bushing and the sealing ring.

[0068] Based on any of the above embodiments, components made of silicone, nitrile rubber or polyurethane materials can be installed on the surface of the housing 100. Since silicone, nitrile rubber, and polyurethane have good chemical affinity for medical blue film, it is not easy to fall off when the blue film wraps the housing 100.

[0069] In the present application, the control board 107, the camera module 109, the laser module 108, and the lighting module 110 can all be fixed on the heat dissipation plate 106 through fasteners, and each has a certain surface contact with the heat dissipation plate 106 for heat conduction. The fasteners can be bolts, nuts, screws, studs, washers, pins, etc.

[0070] Furthermore, in order to make each module firmly fixed to the heat dissipation plate 106 and maintain good heat exchange ability, thermal conductive glue can be used to reinforce the connection between the fasteners and the heat dissipation plate 106. The thermal conductive glue has a heat conduction function and has little influence on the heat exchange ability.

[0071] The embodiments of the subject matter and the functional operations described in this specification can be implemented in the following: hardware of the structures disclosed in this specification and their structural equivalents, or a combination of one or more of them.

[0072] Although this specification contains many specific implementation details, these should not be construed as limiting the scope of any invention or the scope of what is claimed, but rather are mainly used to describe the features of specific embodiments of a particular invention. Certain features described in multiple embodiments in this specification can also be implemented in combination in a single embodiment. On the other hand, the various features described in a single embodiment can also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may function in certain combinations as described above and are even initially claimed as such, one or more features from the claimed combination can in some cases be removed from that combination, and the claimed combination can be directed to a sub-combination or a variation of a sub-combination.

[0073] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. A housing, characterized in that: The shell is applied to a three-dimensional scanner, and the two ends of the shell are used to be connected to the first component and the second component of the three-dimensional scanner respectively, and an air inlet and an air outlet are provided at the connection between the shell and the second component; an active heat sink can be installed in the shell, and the active heat sink is used to control the air to enter the shell from the air inlet and to be discharged from the shell from the air outlet.

2. The housing according to claim 1, characterized in that The connection between the second component and the shell is located between the air inlet and the air outlet, and the second component is also used to isolate the airflow sucked from the air inlet and the airflow blown out from the air outlet.

3. A three-dimensional scanner, characterized in that: It includes a scanning head, a power supply unit, a shell, and an active heat sink; the scanning head and the power supply unit are respectively connected to the two ends of the shell, and an air inlet and an air outlet are provided at the connection between the shell and the power supply unit; the active heat sink is arranged in the shell and is used to control air to enter the shell from the air inlet and to be discharged from the shell from the air outlet.

4. The three-dimensional scanner according to claim 3, characterized in that: The connection between the power supply unit and the shell is located between the air inlet and the air outlet, and the power supply unit is also used to isolate the airflow sucked from the air inlet and the airflow blown out from the air outlet.

5. The three-dimensional scanner according to claim 3, characterized in that: It also includes a heat sink arranged in the shell; the heat sink is used for heat dissipation; the edge of the heat sink is in contact with the inner wall of the shell, and the heat sink divides the internal space of the shell into a first air chamber and a second air chamber, the first air chamber is connected with the outside of the shell through the air inlet, and the second air chamber is connected with the outside of the shell through the air outlet; the heat sink includes a connecting portion away from the tail, and the connecting portion is used to connect the first air chamber and the second air chamber; the active heat sink is located in the first air chamber or the second air chamber, and the active heat sink is located between the connecting portion and the tail.

6. The three-dimensional scanner according to claim 5, characterized in that: The three-dimensional scanner also includes a control board; the heat sink also includes heat sink fins; the heat sink fins and the control board are respectively located in the first air chamber and the second air chamber.

7. The three-dimensional scanner according to claim 6, characterized in that: The control board is located in the first air chamber, and the heat dissipation fins and the active heat dissipation element are located in the second air chamber.

8. The three-dimensional scanner according to claim 3, characterized in that: The power supply unit is a battery or a connecting harness.

9. The three-dimensional scanner according to claim 6, characterized in that: The heat sink and the heat sink fins are integrally formed; the heat sink is made of aluminum.

10. The three-dimensional scanner according to any one of claims 3 to 9, characterized in that: The active heat sink is a turbo fan or an axial flow fan.

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