Heat dissipation system and optical scanner

Abstract

The utility model relates to the technical field of heat dissipation, in particular to a heat dissipation system and an optical scanner, which comprises a cooling assembly, a first cooling cavity and a first air box, the first cooling cavity is provided with a plurality of first air outlets, a first cooling chamber is arranged in the first cooling cavity, the first air outlets are communicated with the first cooling chamber and the outside, and the first air box is arranged in the first cooling cavity. The first gas tank and the cooling assembly are arranged in the first cooling chamber; the first air box is provided with an air inlet, an air inlet and a plurality of air outlet holes, a first air chamber is arranged in the first air box, the air inlet is communicated with the first air chamber and the outside, the cooling assembly is provided with an air inlet end, a hot air discharging end and a cold air discharging end, the air inlet end is suitable for being communicated with a compressed air source, and the hot air discharging end is suitable for being communicated with the outside; the cold air discharging end communicates with an air inlet of the first air box. Cold fluid is provided through the cooling assembly, normal-temperature gas is provided through the air inlet of the first gas box, and the temperature of mixed gas is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, in particular to a heat dissipation system and an optical scanner. Background Art

[0002] The camera and light source in the existing optical scanner are located in the internal space of the device. The camera and light source will generate a lot of heat when working. If the heat cannot be dissipated in time, the temperature of the camera and light source will be too high, which will seriously affect the normal operation of the camera and light source. Therefore, it is necessary to dissipate heat for the camera and light source.

[0003] Some factories use refrigeration equipment such as air conditioners to dissipate heat from cameras and light sources. However, these refrigeration equipment have high energy consumption and large refrigeration parts, which takes up a lot of space.

[0004] At present, some manufacturers have adopted vortex tubes to directly dissipate heat for cameras and light sources. The wind force directly blown out by the vortex tube is strong and the gas temperature is too low, which can easily lead to a decrease in the light output effect of the light source, and thus easily lead to a situation where the lighting requirements cannot be met. Utility Model Content

[0005] The embodiments of the utility model provide a heat dissipation system and an optical scanner to solve the problem that the wind force directly blown out by the vortex tube is large and the gas temperature is too low, which easily leads to a decrease in the light output effect of the light source and thus easily leads to a situation where the lighting requirements cannot be met.

[0006] On the one hand, an embodiment of the utility model provides a heat dissipation system, including a cooling component, a first cooling cavity and a first air box, wherein the first cooling cavity is provided with a plurality of first air outlets, a first cooling chamber is provided inside the first cooling cavity, the first air outlet is connected to the first cooling chamber and external air, and the first air box and the cooling component are both placed in the first cooling chamber;

[0007] The first air box has an air inlet, an air inlet and an air outlet, a first air chamber is arranged inside the first air box, the air inlet connects the first air chamber with the outside air, so that the outside air can enter the first air chamber through the air inlet, and the first air chamber connects the first cooling chamber through the air outlet;

[0008] The cooling component has an air inlet end, a hot air exhaust end and a cold air exhaust end, the air inlet end is suitable for connecting to a compressed air source, the hot air exhaust end is suitable for connecting to the external gas, and the cold air exhaust end is connected to the air inlet of the first air box.

[0009] Optionally, the heat dissipation system further comprises at least one second air box, a second air chamber is arranged inside the second air box, the second air box has an inlet and a discharge hole, and the inlet of the second air box is connected to the first air chamber through an air pipe;

[0010] The heat dissipation system also includes a second cooling cavity independent of the first cooling cavity, the second cooling cavity is provided with a plurality of second exhaust ports, a second cooling chamber is provided inside the second cooling cavity, the second exhaust ports connect the second cooling chamber and the external air, the second air box is provided in the second cooling chamber, and the second air chamber is connected to the second cooling chamber through the exhaust hole.

[0011] Optionally, the first air box includes a box body, a first bottom wall and a second bottom wall, one side of the first bottom wall and one side of the second bottom wall overlap and are connected to each other to form a dihedral angle, the angle between the first bottom wall and the second bottom wall is a plane angle of the dihedral angle, the plane angle of the dihedral angle is an obtuse angle, and the opening of the plane angle of the dihedral angle faces away from the first air chamber; there are multiple air outlet holes, a part of the air outlet holes are arranged on the first bottom wall, and another part of the air outlet holes are arranged on the second bottom wall;

[0012] The box body has an air cavity having a unidirectional opening, and the first bottom wall and the second bottom wall close the opening of the air cavity to form the first air chamber.

[0013] Optionally, the plane angle of the dihedral angle is a, 130°<a<180°.

[0014] Optionally, the heat dissipation system further includes a first fan, which is installed in the air inlet and is used to draw the external air into the first air chamber.

[0015] Optionally, the heat dissipation system further includes a plurality of first negative pressure fans, and a first negative pressure fan is installed in each of the first air outlets, and the first negative pressure fan is used to extract the gas in the first cooling chamber into the external air.

[0016] Optionally, the heat dissipation system further includes a plurality of second negative pressure fans, and a second negative pressure fan is installed in each of the second air outlets, and the second negative pressure fan is used to extract the gas in the second cooling chamber into the external air.

[0017] Optionally, the heat dissipation system further includes a second fan, which is installed in the discharge hole and is used to blow the gas in the second air box into the second cooling chamber.

[0018] Optionally, the diameter of the air outlet holes of the first air box is 5 mm to 10 mm, and the diameter of the exhaust holes of the second air box is 40 mm to 60 mm.

[0019] Optionally, a plurality of the discharge holes are provided, and the plurality of discharge holes are arranged at intervals along the length direction of the second air box;

[0020] The plurality of air outlet holes are divided into two groups, one group of air outlet holes is arranged in a rectangular array on the first bottom wall, and the other group of air outlet holes is arranged in a rectangular array on the second bottom wall.

[0021] Optionally, the cooling assembly includes a cooling box and a cooling element, the cooling box is connected to the first air box, a receiving space is provided in the cooling box, and the air inlet end, the hot air discharge end and the cold air discharge end are all provided on the cooling box;

[0022] The cooling member is located in the accommodating space, and has an air intake portion, a hot air discharge portion, and a cold air discharge portion. The air intake portion is connected to the air intake end, the hot air discharge portion is connected to the hot air discharge end, and the cold air discharge portion is connected to the cold air discharge end.

[0023] Optionally, the cooling box includes a box body and a cover body, the box body and the cover body enclose the accommodating space, the air inlet end and the cold air discharge end are located at two ends of the box body in the length direction, and the hot air discharge end is arranged on the cover body.

[0024] Optionally, the cooling element is a vortex tube cooler.

[0025] On the other hand, an embodiment of the utility model further provides an optical scanner, comprising a housing, a first camera assembly, a first light source assembly, a second camera assembly, a second light source assembly and the above-mentioned heat dissipation system;

[0026] The housing has a first chamber and a second chamber, the inner wall of the first chamber is formed as the first cooling chamber or the first cooling chamber is arranged in the first chamber, and the inner wall of the second chamber is formed as the second cooling chamber or the second cooling chamber is arranged in the second chamber;

[0027] The first camera assembly and the first light source assembly are disposed in the first cooling chamber, and the second camera assembly and the second light source assembly are disposed in the second cooling chamber.

[0028] Implementing the embodiments of the utility model has the following beneficial effects:

[0029] The embodiments of the utility model provide a heat dissipation system and an optical scanner, which provide low-temperature cold air to a first air box through a cooling component, and supply external gas to an air inlet of the first air box. After the two are mixed in the first air box, the temperature of the gas in the first air box rises slightly, and then flows into the cooling cavity through the air outlet of the first air box, thereby cooling the components in the cooling cavity, thereby improving the cooling effect but not damaging the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0032] Figure 2 It is an overall schematic diagram of an optical scanner in an embodiment of the utility model;

[0033] Figure 3 It is an internal structure diagram of the optical scanner in the embodiment of the utility model;

[0034] Figure 4 It is a simplified internal structure diagram of the housing of the optical scanner in the embodiment of the utility model;

[0035] Figure 5 This is a diagram of the internal structure of the optical scanner in the embodiment of the utility model after the housing is removed;

[0036] Figure 6 This is an exploded structural diagram of the first air box and the first fan of the optical scanner in the embodiment of the utility model;

[0037] Figure 7 This is an exploded coordination diagram of the first air box and the first fan of the optical scanner in the embodiment of the utility model;

[0038] Figure 8 It is a schematic structural diagram of a cooling assembly of an optical scanner in an embodiment of the utility model;

[0039] Fig. 9 It is an exploded schematic diagram of a cooling assembly in an embodiment of the utility model;

[0040] Fig.10 It is a structural diagram of the second air box of the optical scanner in the embodiment of the utility model;

[0041] Fig.11This is a schematic diagram of the position of the second fan of the optical scanner in the embodiment of the utility model;

[0042] Fig.12 It is a schematic structural diagram of the second air box of the optical scanner in the embodiment of the utility model.

[0043] Reference numerals:

[0044] 100, first cooling cavity; 101, first air outlet; 102, first negative pressure fan; 103, second negative pressure fan; 104, second air outlet; 200, first chamber; 300, second chamber; 400, housing; 500, transmission mechanism; 900, second cooling cavity;

[0045] 1. First air box; 11. Air inlet; 12. Air inlet; 13. Air outlet; 14. Air pipe interface; 15. First bottom wall; 16. Second bottom wall; 2. Second air box; 21. Inlet; 22. Discharge hole; 3. Cooling assembly; 30. Cooling box; 301. Accommodating space; 302. Box body; 303. Cover body; 31. Air inlet end; 32. Hot air discharge end; 33. Cold air discharge end; 34. Cooling element; 341. Air inlet part; 342. Hot air discharge part; 343. Cold air discharge part; 4. First fan; 5. Second fan; 6. First camera assembly; 7. First light source assembly; 8. Second camera assembly; 9. Second light source assembly. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Reference Figure 1 , and combined with Figure 6-Figure 9 The embodiment of the utility model provides a heat dissipation system, including a cooling assembly 3, a first cooling cavity 100 and a first air box 1, Figure 1 The middle dotted line represents the first cooling cavity 100. The first cooling cavity 100 is provided with a plurality of first exhaust ports 101. A first cooling chamber is provided inside the first cooling cavity 100. The first exhaust ports 101 connect the first cooling chamber with the external air. The first air box 1 and the cooling assembly 3 are both placed in the first cooling chamber.

[0050] The first air box 1 has an air inlet 11, an air inlet 12 and an air outlet 13. A first air chamber is arranged inside the first air box 1. The air inlet 12 connects the first air chamber with external air, so that external air can enter the first air chamber through the air inlet 12. The first air chamber is connected to the first cooling chamber through the air outlet 13. The air inlet 12 in this embodiment is connected to a pure gas source, the temperature of the pure gas source can be room temperature or slightly lower than room temperature, and external air enters the first air chamber from the air inlet 12. The first air chamber is connected to the first cooling chamber through the air outlet 13.

[0051] The cooling assembly 3 has an air inlet end 31, a hot air discharge end 32 and a cold air discharge end 33. The air inlet end 31 is suitable for connecting to a compressed air source, the hot air discharge end 32 is suitable for connecting to external gas, and the cold air discharge end 33 is connected to the air inlet 11 of the first air box 1.

[0052] The gas obtained by refrigeration of the cooling component 3 is mixed with the external gas introduced into the first air chamber through the air inlet 12, so that the temperature of the gas in the first air box 1 is higher than the temperature of the gas obtained by refrigeration of the cooling component 3. The temperature of the gas in the first air box 1 can meet the heat dissipation requirements while ensuring that the gas temperature is not too low, thereby reducing the occurrence of such phenomena as poor lighting effect of the light source due to too low temperature.

[0053] As an example, refer to Figure 7 , Figure 8 and Fig. 9The cooling assembly 3 includes a cooling box 30 and a cooling member 34. The cooling box 30 is connected to the first air box 1. A storage space 301 is provided in the cooling box 30. The air intake end 31, the hot air discharge end 32 and the cold air discharge end 33 are all arranged on the cooling box 30. The cooling member 34 is located in the storage space 301. The cooling member 34 has an air intake portion 341, a hot air discharge portion 342 and a cold air discharge portion 343. The air intake portion 341 is communicated with the air intake end 31, the hot air discharge portion 342 is communicated with the hot air discharge end 32, and the cold air discharge portion 343 is communicated with the cold air discharge end 33.

[0054] In this embodiment, the cooling element 34 is mainly used to reduce the temperature of the gas delivered to the cooling element 34 by the compressed gas source and deliver it to the first air chamber. The cooling box 30 mainly protects the cooling element 34, and the cooling element 34 can also be installed on the frame through the cooling box 30.

[0055] As an example, the cooling box 30 includes a box body 302 and a cover body 303, the box body 302 and the cover body 303 enclose a receiving space 301, an air inlet end 31 and a cold air discharge end 33 are located at two ends in the length direction of the box body 302, and a hot air discharge end 32 is arranged on the cover body 303. The split cooling box 30 can facilitate regular maintenance of the cooling element 34, thereby ensuring the cooling effect of the cooling element 34.

[0056] As an example, the cooling member 34 is a vortex tube cooler, also known as a vortex tube, vortex cooling tube, vortex tube (VortexTube), jet tube, vortex refrigerator, cold air generator, cold air pipe, cold air pipe, etc. The vortex tube cooler allows compressed gas to enter a cylindrical vortex generator, and the rotating airflow enters the inside of the tube along the tube wall. The airflow in the tube generates energy separation after vortex exchange, and the airflow is divided into two airflows - one is a hot airflow and the other is a cold airflow. The hot gas flows from the vortex tube cooler through the hot air discharge end 32 to the outside, and the cold air source enters the first air box 1 from the vortex tube cooler through the cold air discharge end 33.

[0057] Reference Figure 3 and Figure 4 As an example, the heat dissipation system further includes at least one second air box 2, a second air chamber is arranged inside the second air box 2, the second air box 2 has an inlet 21 and a discharge hole 22, and the inlet 21 of the second air box 2 is connected to the first air chamber through an air pipe.

[0058] The heat dissipation system also includes a second cooling cavity 900 independent of the first cooling cavity 100. The second cooling cavity 900 is provided with a plurality of second exhaust ports 104. A second cooling chamber is provided inside the second cooling cavity 900. The second exhaust ports 104 connect the second cooling chamber with the external air. The second air box 2 is provided in the second cooling chamber. The second air chamber is connected to the second cooling chamber through the exhaust hole 22.

[0059] In this embodiment, a first air box 1 and at least one second air box 2 are included, so that heat can be dissipated to two or more external spaces.

[0060] Reference Figure 6 As an example, the first air box 1 includes a box body, a first bottom wall 15 and a second bottom wall 16, one side of the first bottom wall 15 and one side of the second bottom wall 16 overlap and are connected to each other to form a dihedral angle, the angle between the first bottom wall 15 and the second bottom wall 16 is the plane angle of the dihedral angle, the plane angle of the dihedral angle is an obtuse angle, and the opening of the plane angle of the dihedral angle faces away from the first air chamber; there are multiple air outlet holes 13, a part of the air outlet holes 13 are arranged on the first bottom wall 15, and another part of the air outlet holes 13 are arranged on the second bottom wall 16; the box body has an air cavity, the air cavity has a unidirectional opening, the first bottom wall 15 and the second bottom wall 16 close the opening of the air cavity to form a first air chamber.

[0061] As an example, the plane angle of the dihedral angle is a, 130°<a<180°. More specifically, the plane angle of the dihedral angle in this embodiment is greater than 130° and less than 180°. That is, the angle between the first bottom wall 15 and the second bottom wall 16 is a, 130°<a<180°. Among them, the value of a can be 135°, 140°, 145°, 150°, 160°, 170° and 175°, or 131°, 134°, 164°, etc.

[0062] In this embodiment, the volume of the first air box 1 is affected by the internal dimensions of the device to which it is applied. Generally speaking, the volume of the first air box 1 is smaller than that of common air-conditioning refrigeration equipment, so the volume of the vortex tube cooler is smaller, that is, the heat dissipation system in this embodiment also has the advantage of occupying a small volume.

[0063] As an example, the heat dissipation system further includes a first fan 4, which is installed in the air inlet 12 and is used to draw external air into the first air chamber and provide power to the mixed gas in the first air box 1 to accelerate the discharge of the mixed gas from the first air box 1.

[0064] Reference Figure 2 and Figure 3 As an example, when the heat dissipation system is applied to an optical scanner, the heat dissipation system further includes a plurality of first negative pressure fans 102, and a first negative pressure fan 102 is installed in each first air outlet 101, and the first negative pressure fan 102 is used to extract the gas in the first cooling chamber into the outside air. The first fan 4 accelerates the entry of the outside air, and the first negative pressure fan 102 accelerates the discharge of the gas in the first cooling chamber 100. Through the cooperation of the first fan 4 and the first negative pressure fan 102, the gas flow in the first cooling chamber 100 is accelerated, and the heat dissipation effect is improved.

[0065] As an example, the heat dissipation system further includes a plurality of second negative pressure fans 103, each second exhaust port 104 is equipped with a second negative pressure fan 103, and the second negative pressure fan 103 is used to extract the gas in the second cooling chamber into the outside air. The first air box 1 is provided with an air pipe interface 14, and the two ends of the air pipe are respectively fixed on the air pipe interface 14 and the inlet 21. The air pipe interface 14 is provided on the box body.

[0066] Reference Fig.10 As an example, the heat dissipation system further includes a second fan 5, which is installed in the discharge hole 22, and is used to blow the gas in the second air box 2 into the second cooling chamber.

[0067] Reference Figure 6 and Fig.12 As an example, in this embodiment, the apertures of all the air outlet holes 13 are the same. The apertures of all the air outlet holes 13 of the first air box 1 are 5 mm to 10 mm, and the apertures of the air outlet holes 13 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm, etc. The apertures of the discharge holes 22 of the second air box 2 are 40 mm to 60 mm, and the apertures of the discharge holes 22 can be 40 mm, 45 mm, 48 mm, 55 mm, 58 mm or 60 mm, etc.

[0068] As an example, a plurality of discharge holes 22 are provided, and the plurality of discharge holes 22 are arranged at intervals along the length direction of the second air box 2. The plurality of air outlet holes 13 are divided into two groups, one group of air outlet holes 13 is arranged in a rectangular array on the first bottom wall 15, and the other group of air outlet holes 13 is arranged in a rectangular array on the second bottom wall 16. The array arrangement of the air outlet holes makes the air outlet more uniform.

[0069] In one embodiment, referring to Figures 2 to 12 This embodiment provides an optical scanner, including a housing 400, a first camera assembly 6, a first light source assembly 7, a second camera assembly 8, a second light source assembly 9 and the heat dissipation system of the above embodiment.

[0070] The box body 302 is fixed on the shell 400 , a through hole is provided on the shell 400 , the cover body 303 is placed in the through hole, and the hot gas discharge end 32 is a plurality of holes arranged in an array and provided on the cover body 303 .

[0071] The shell 400 has a first chamber 200 and a second chamber 300. The inner wall of the first chamber 200 is formed as a first cooling chamber 100 or the first cooling chamber 100 is arranged in the first chamber 200. In other words, the first cooling chamber 100 in this embodiment is the first chamber 200, and the inner wall of the second chamber 300 is formed as a second cooling chamber 900 or the second cooling chamber 900 is arranged in the second chamber.

[0072] The first air box 1, the cooling assembly 3, the first camera assembly 6 and the first light source assembly 7 are arranged in the first cooling chamber. In this embodiment, the air outlet 13 of the first air box 1 faces the first light source assembly 7. The second air box 2, the second camera assembly 8 and the second light source assembly 9 are arranged in the second cooling chamber.

[0073] Reference Figure 2 , Figure 3 and Figure 4 , Figure 4 For the convenience of description, two relatively independent boxes are surrounded by dotted lines. The upper box is the first cooling cavity 100, in which the first air box 1 and the cooling assembly 3 are arranged. The lower box is the second cooling cavity 900. The second chamber 300 constitutes the second cooling cavity 900. At least one second air box 2 is arranged in the second cooling cavity 900, and the second air box 2 is connected to the second cooling cavity 900 through the discharge hole 22. The second cooling cavity 900 and the first cooling cavity 100 are independent of each other.

[0074] The cold fluid produced by the vortex tube cooler (cooling component 3) in this embodiment first enters the first chamber 200 and then mixes with the external gas. A part of the mixed gas flows into the first cooling cavity 100 from the air outlet 13 of the first air box 1, and another part of the mixed gas enters the second air box 2 through the air pipe, and then enters the second cooling cavity 900 from the discharge hole 22 of the second air box 2. Through the above means, the first camera component 6 and the first light source component 7 in the first cooling cavity 100 and the second camera component 8 and the second light source component 9 in the second cooling cavity 900 can be cooled at the same time.

[0075] In this embodiment, the optical scanner further includes a conveying mechanism 500, which is disposed through the housing 400 and is used to convey materials. The first chamber 200 and the second chamber 300 are disposed on opposite sides of the conveying mechanism 500 in the up-down direction. The conveying mechanism 500 conveys the materials to the bottom of the first camera assembly 6, which detects the materials. Similarly, the materials are conveyed to the top of the second camera assembly 8, which detects the materials. The optical scanner in this embodiment is generally used on PCB boards, and of course, it can also be used to detect other workpieces.

[0076] In one embodiment, the first cooling cavity 100 may be an independent component and is disposed in the first cavity 200. Specifically, the first cooling cavity 100 may be placed in the first cavity 200; or, the first cooling cavity 100 is connected to the shell 400 and is placed in the first cavity 200. Similarly, the second cooling cavity 900 may be an independent component and is disposed in the second cavity 300. Specifically, the second cooling cavity 900 may be placed in the second cavity 300; or, the second cooling cavity 900 is connected to the shell 400 and is placed in the second cavity 300.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A heat dissipation system, characterized in that: The invention comprises a cooling assembly, a first cooling cavity and a first air box, wherein the first cooling cavity is provided with a plurality of first air outlets, a first cooling chamber is provided inside the first cooling cavity, the first air outlet is connected with the first cooling chamber and the outside air, and the first air box and the cooling assembly are both placed in the first cooling chamber; The first air box has an air inlet, an air inlet and an air outlet, a first air chamber is arranged inside the first air box, the air inlet connects the first air chamber with the outside air, so that the outside air can enter the first air chamber through the air inlet, and the first air chamber connects the first cooling chamber through the air outlet; The cooling component has an air inlet end, a hot air exhaust end and a cold air exhaust end, the air inlet end is suitable for connecting to a compressed air source, the hot air exhaust end is suitable for connecting to the external gas, and the cold air exhaust end is connected to the air inlet of the first air box.

2. The heat dissipation system according to claim 1, characterized in that: The heat dissipation system further comprises at least one second air box, wherein a second air chamber is arranged inside the second air box, the second air box has an inlet and a discharge hole, and the inlet of the second air box is connected to the first air chamber through an air pipe; The heat dissipation system also includes a second cooling cavity independent of the first cooling cavity, the second cooling cavity is provided with a plurality of second exhaust ports, a second cooling chamber is provided inside the second cooling cavity, the second exhaust ports connect the second cooling chamber and the external air, the second air box is provided in the second cooling chamber, and the second air chamber is connected to the second cooling chamber through the exhaust hole.

3. The heat dissipation system according to claim 2, characterized in that: The first air box comprises a box body, a first bottom wall and a second bottom wall, one side of the first bottom wall and one side of the second bottom wall overlap and are connected to each other to form a dihedral angle, the angle between the first bottom wall and the second bottom wall is the plane angle of the dihedral angle, the plane angle of the dihedral angle is an obtuse angle, and the opening of the plane angle of the dihedral angle faces away from the first air chamber; there are a plurality of air outlet holes, a part of the air outlet holes are arranged on the first bottom wall, and another part of the air outlet holes are arranged on the second bottom wall; The box body has an air cavity having a unidirectional opening, and the first bottom wall and the second bottom wall close the opening of the air cavity to form the first air chamber.

4. The heat dissipation system according to claim 3, characterized in that: The plane angle of the dihedral angle is a, 130°<a<180°.

5. The heat dissipation system according to claim 2, characterized in that: The heat dissipation system further includes a first fan, which is installed in the air inlet and is used to draw the external air into the first air chamber.

6. The heat dissipation system according to claim 2, characterized in that: The heat dissipation system further includes a plurality of first negative pressure fans, one of the first negative pressure fans being installed in each of the first air outlets, and the first negative pressure fans being used to extract the gas in the first cooling chamber into the external air.

7. The heat dissipation system according to claim 2, characterized in that: The heat dissipation system also includes a plurality of second negative pressure fans, one of which is installed in each of the second air outlets, and the second negative pressure fans are used to extract the gas in the second cooling chamber into the external air.

8. The heat dissipation system according to claim 2, characterized in that: The heat dissipation system further includes a second fan, which is installed in the discharge hole and is used to blow the gas in the second air box into the second cooling chamber.

9. The heat dissipation system according to claim 3, characterized in that: The diameter of the air outlet of the first air box is 5 mm to 10 mm, and the diameter of the exhaust hole of the second air box is 40 mm to 60 mm.

10. The heat dissipation system according to claim 9, characterized in that: There are a plurality of discharge holes, and the plurality of discharge holes are arranged at intervals along the length direction of the second air box; The plurality of air outlet holes are divided into two groups, one group of air outlet holes is arranged in a rectangular array on the first bottom wall, and the other group of air outlet holes is arranged in a rectangular array on the second bottom wall.

11. The heat dissipation system according to claim 2, characterized in that: The cooling assembly includes a cooling box and a cooling element, the cooling box is connected to the first air box, a receiving space is provided in the cooling box, and the air inlet end, the hot air discharge end and the cold air discharge end are all provided on the cooling box; The cooling member is located in the accommodating space, and has an air intake portion, a hot air discharge portion, and a cold air discharge portion. The air intake portion is connected to the air intake end, the hot air discharge portion is connected to the hot air discharge end, and the cold air discharge portion is connected to the cold air discharge end.

12. The heat dissipation system according to claim 11, characterized in that: The cooling box includes a box body and a cover body, the box body and the cover body enclose the accommodating space, the air inlet end and the cold air discharge end are located at two ends of the box body in the length direction, and the hot air discharge end is arranged on the cover body.

13. The heat dissipation system according to claim 12, characterized in that: The cooling element is a vortex tube cooler.

14. An optical scanner, characterized in that: It comprises a housing, a first camera assembly, a first light source assembly, a second camera assembly, a second light source assembly and the heat dissipation system according to any one of claims 2 to 13; The housing has a first chamber and a second chamber, the inner wall of the first chamber is formed as the first cooling chamber or the first cooling chamber is arranged in the first chamber, and the inner wall of the second chamber is formed as the second cooling chamber or the second cooling chamber is arranged in the second chamber; The first camera assembly and the first light source assembly are disposed in the first cooling chamber, and the second camera assembly and the second light source assembly are disposed in the second cooling chamber.

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