Excimer light-emitting device

Abstract

The utility model relates to the technical field of excimer lamps, and discloses an excimer light-emitting device which comprises a box body, a reflecting cover, an excimer lamp, an input pipe and an output pipe, a light-emitting window is arranged at the bottom of the box body, the reflecting cover is installed in the box body, the bottom of the reflecting cover is an opening and covers the light-emitting window, the excimer lamp is arranged in the reflecting cover, and the output pipe is arranged in the box body. The two ends of the excimer lamp extend out of the reflecting cover respectively and are provided with fixing assemblies, the fixing assemblies are installed in the box body, the excimer lamp comprises a lamp tube, the lamp tube comprises an outer tube and an inner tube which are coaxially arranged, a sealed cavity is formed between the outer tube and the inner tube, the sealed cavity is filled with dischargeable gas, a cooling channel is formed in the inner tube, and the cooling channel is communicated with the cooling channel. One end of the cooling channel communicates with the input pipe, the other end of the cooling channel communicates with the output pipe, and the input pipe is connected with a refrigerant. According to the utility model, the light utilization rate of the excimer lamp can be improved, the excimer lamp can be cooled, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of excimer lamps, in particular to an excimer light-emitting device. Background Art

[0002] Excimer lamps use high pressure and high frequency outside the lamp tube to bombard the rare gas inside the lamp tube to emit ultraviolet rays. Compared with low-pressure mercury lamps, the discharge tube of excimer lamps is not filled with mercury and other harmful substances, and has no negative impact on the environment. They are widely used in medical, water treatment, environmental protection, chemical, material surface treatment and other industries. However, when the excimer lamp emits light, the light it emits scatters around, and the irradiated object is generally located on one side of the excimer lamp. Therefore, only a small part of the light emitted by the excimer lamp is irradiated on the irradiated object, that is, the light utilization rate of the excimer lamp is low, and the working rate is low. In addition, the excimer lamp generates a lot of heat when it is working, which increases the temperature of the excimer lamp and its environment, thereby affecting the working efficiency of the excimer lamp. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an excimer light emitting device which can improve the light utilization rate of the excimer lamp and cool down the excimers and has high working efficiency.

[0004] In order to solve the above technical problems, the utility model provides an excimer light-emitting device, including a box, a reflector, an excimer lamp, an input tube and an output tube, the bottom of the box is provided with a light exit window, the reflector is installed in the box, the bottom of the reflector is an opening and covers the light exit window, the excimer lamp is arranged in the reflector, the two ends of the excimer lamp respectively extend out of the reflector and are provided with a fixing component, the fixing component is installed in the box, the excimer lamp includes a lamp tube, the lamp tube includes an outer tube and an inner tube, the inner tube is coaxially arranged inside the outer tube, a sealed cavity is formed between the outer tube and the inner tube, a cooling channel is provided in the inner tube, one end of the cooling channel is connected to the input tube, the other end of the cooling channel is connected to the output tube, and the input tube is connected to a refrigerant.

[0005] As a preferred embodiment of the utility model, the excimer lamp also includes a first electrode and a second electrode, the first electrode is sleeved on the outside of the outer tube, the second electrode is arranged in the inner tube and cooperates with the inner tube, a cooling tube is passed through the second electrode, and the interior of the cooling tube forms the cooling channel.

[0006] As a preferred solution of the utility model, the fixing assembly includes a fixing sleeve and a pipe joint, the fixing sleeve is arranged on the end of the lamp tube, the pipe joint is installed on the fixing sleeve, one end of the cooling pipe is connected to the input pipe through the pipe joint corresponding to the end, and the other end of the cooling pipe is connected to the output pipe through the pipe joint corresponding to the end.

[0007] As a preferred solution of the utility model, an installation component is provided in the box body, and the installation component includes a fixed block and a pressing block. The fixed block is fixed to the bottom of the box body, and a first installation groove is provided on the top of the fixed block. The pressing block is installed on the top of the fixed block, and a second installation groove aligned with the first installation groove is provided on the bottom of the pressing block. The first installation groove and the second installation groove are connected to form a mounting hole that cooperates with the fixed sleeve.

[0008] As a preferred solution of the utility model, an input joint and an output joint are provided on the side of the box body, the input pipe is connected to the input joint, and the output pipe is connected to the output joint.

[0009] As a preferred solution of the utility model, an air intake pipe is provided in the box body, the air intake pipe is arranged around the inner circumference of the box body, a plurality of exhaust ports are evenly distributed on the air intake pipe, the air intake pipe is connected to a nitrogen supply source, and an exhaust hole is provided at the bottom of the box body.

[0010] As a preferred solution of the utility model, a flow meter is installed on the side of the box body, and the flow meter is provided with an input port and an output port, the input port is connected to a nitrogen supply source, and the output port is connected to the air inlet pipe.

[0011] As a preferred embodiment of the utility model, a first partition is provided in the box body, and the first partition divides the interior of the box body into a first cavity and a second cavity which are arranged in sequence from bottom to top. The excimer lamp is located in the first cavity, and a power supply component connected to the excimer lamp is provided in the second cavity. The side of the second cavity is provided with an air vent and a cooling fan, and the cooling fan is connected to the outside.

[0012] As a preferred embodiment of the present invention, a plurality of the excimer lamps are provided, a plurality of the power supply components are provided and are connected one-to-one with the excimer lamps, a plurality of the power supply components are arranged in the second cavity at intervals along the lateral direction of the box body, the air holes are respectively provided on both sides of the longitudinal direction of the second cavity, the cooling fan is provided on one lateral side of the second cavity, and the blowing end of the cooling fan is connected to the outside.

[0013] As a preferred solution of the utility model, a second partition is further provided in the box body, a heat dissipation cavity is formed between the first partition and the second partition, and a plurality of heat dissipation holes are provided on the side of the heat dissipation cavity.

[0014] The utility model embodiment is a quasi-molecular light-emitting device. Compared with the prior art, its beneficial effects are: because the excimer lamp is arranged in the reflector, the light emitted by the excimer lamp is basically emitted from the light exit window, which effectively increases the utilization rate of the light of the excimer lamp and improves its working efficiency; when working, the refrigerant is transported to the cooling channel through the input pipe, and the refrigerant in the cooling channel exchanges heat with the lamp tube to achieve cooling of the excimer lamp, thereby preventing the temperature of the excimer lamp and the environment in which it is located from being too high and affecting the working efficiency of the excimer lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is an exploded structural diagram of the utility model;

[0017] Figure 3 It is a bottom breaking structure diagram of the utility model;

[0018] Figure 4 It is a bottom view of the interior of the box of the utility model;

[0019] Figure 5 yes Figure 4 The connection structure diagram of the excimer lamp and the reflector;

[0020] Figure 6 It is a schematic diagram of the structure of the excimer lamp of the utility model;

[0021] Figure 7 It is a cross-sectional schematic diagram of the excimer lamp of the utility model;

[0022] Figure 8 It is a side broken structure diagram of the utility model;

[0023] Fig. 9 It is the internal structure diagram of the second cavity of the utility model;

[0024] In the figure, 1, box body; 11, light exit window; 12, input connector; 13, output connector; 14, air inlet pipe; 141, exhaust port; 142, air inlet connector; 15, exhaust hole; 16, first cavity; 17, second cavity; 171, power supply component; 172, air vent; 173, cooling fan; 18, cooling cavity; 181, cooling hole; 2, reflector; 3, excimer lamp; 31, fixing component; 311, fixing sleeve; 312, pipe connection Head; 32, lamp tube; 321, outer tube; 322, inner tube; 323, sealed cavity; 33, cooling channel; 331, cooling tube; 34, first electrode; 35, second electrode; 4, input tube; 5, output tube; 6, flow meter; 61, input port; 62, output port; 7, mounting assembly; 71, fixing block; 711, first mounting groove; 72, pressing block; 721, second mounting groove; 73, mounting hole; 8, first partition; 9, second partition. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1-9As shown, a quasi-molecular light-emitting device of a preferred embodiment of the utility model comprises a housing 1, a reflector 2, an quasi-molecular lamp 3, an input tube 4 and an output tube 5. A light exit window 11 is provided at the bottom of the housing 1, and the reflector 2 is installed in the housing 1. The bottom of the reflector 2 is an opening and covers the light exit window 11. In this embodiment, the reflector 2 is in a rectangular shape. In addition to the bottom, the reflector 2 is provided with reflective plates on the top and four sides. The quasi-molecular lamp 3 is arranged in the reflector 2. Specifically, when the quasi-molecular lamp 3 is working, its light-emitting part is located in the reflector 2. Both ends of the quasi-molecular lamp 3 extend out of the reflector 2 respectively and are provided with a fixing assembly 31. The fixing assembly 31 is installed in the housing 1. The quasi-molecular lamp 3 comprises a lamp tube 32. The lamp tube 32 comprises an outer tube 321 and an inner tube 322. The inner tube 322 is The shaft is arranged inside the outer tube 321, and a sealed cavity 323 is formed between the outer tube 321 and the inner tube 322, and the sealed cavity 323 is filled with a dischargeable gas. A cooling channel 33 is provided in the inner tube 322, and one end of the cooling channel 33 is connected to the input tube 4, and the other end of the cooling channel 33 is connected to the output tube 5. In this embodiment, the cooling channel 33 is connected to the input tube 4 and the output tube 5 respectively through pipelines (not shown in the figure), and the input tube 4 is connected to the refrigerant. In some embodiments of the present embodiment, the refrigerant is water, and it can also be an inert gas, which may include one or more of nitrogen, neon, etc., so it should be emphasized that the refrigerant of the utility model is not limited to water and inert gas. As long as it can complete heat exchange with the excimer lamp 3, there is no specific limitation on the refrigerant.

[0028] The working principle of this embodiment is as follows: when working, the object to be irradiated is located below the light exit window 11. Since the excimer lamp 3 is arranged in the reflector 2, when the excimer lamp 3 emits light, part of the light is directly emitted from the light exit window 11, and the rest of the light is reflected by the reflector 2, so that the light emitted by the excimer lamp 3 is basically emitted from the light exit window 11, thereby irradiating the object to be irradiated, effectively increasing the utilization rate of the light of the excimer lamp 3, thereby improving its working efficiency; when working, the refrigerant is transported to the cooling channel 33 through the input pipe 4, and the cooling channel 3 is located The refrigerant in 3 exchanges heat with the lamp tube 32 to achieve cooling of the excimer lamp 3, thereby preventing the temperature of the excimer lamp 3 and the environment in which it is located from being too high and affecting the working efficiency of the excimer lamp 3; the refrigerant after heat exchange with the lamp tube 32 is transported from the cooling channel 33 to the output tube 5, and then transported to other places. Generally, the output tube 5 is connected to the cooling device, and the output tube 5 transports the refrigerant after heat exchange with the lamp tube 32 to the cooling device. The cooling device cools the refrigerant and then transports it to the input tube 4, thereby realizing the recycling of the refrigerant; in addition, the output tube 5 can be connected to the storage container or the outside world.

[0029] Exemplarily, the excimer lamp 3 also includes a first electrode 34 and a second electrode 35. The first electrode 34 is sleeved on the outside of the outer tube 321, and the second electrode 35 is arranged in the inner tube 322 and cooperates with the inner tube 322. The first electrode 34 and the second electrode 35 are relatively simple to set up and are easy to connect to a power source. When the first electrode 34 and the second electrode 35 are respectively connected to the power source, a dischargeable gas is generated between the first electrode 34 and the second electrode 35 and is bombarded and discharged to emit light. In this embodiment, the first electrode 34 and the second electrode 35 are arranged relative to each other, so that the light around the lamp tube 32 is more uniform. A cooling tube 331 is passed through the second electrode, that is, the second electrode 35 is provided with a through hole that cooperates with the cooling tube 331. The interior of the cooling tube 331 forms the cooling channel 33. The refrigerant is transported to the cooling tube 331 through the input tube 4 to achieve separation of the refrigerant and the second electrode 35. It is suitable for situations where the refrigerant cannot directly contact the second electrode 35 located in the inner tube 322, such as when the refrigerant is water.

[0030] It should be noted that the position of the first electrode 34 and the position of the second electrode 35 in the present embodiment are only used as a more common arrangement example. In other embodiments, the positions of the first electrode 34 and the second electrode 35 can be set at different positions of the lamp tube 32, as long as the normal operation of the excimer lamp 3 can be satisfied; for example, the first electrode 34 is sleeved on one end of the outer tube 321, and the second electrode 35 is sleeved on the other end of the outer tube 321. The distance between the first electrode 34 and the second electrode 35 is greater than the safety distance. At this time, a cooling channel 33 is formed inside the inner tube 322, and the refrigerant can directly pass into the inner tube 322 without the need to additionally set up a cooling tube 331; for another example, the first electrode 34 is sleeved on the outer side of the outer tube 321, and the second electrode 35 is sleeved on the outer side of the inner tube 322 (that is, the second electrode 35 is located in the sealed cavity 323. To ensure that the second electrode 35 can be connected to the power supply, the second electrode 35 is connected to a conductive lead that extends out of the sealed cavity 323 in a sealed manner), and a cooling channel 33 is formed inside the inner tube 322; for another example, the first electrode 3 4 is arranged at one end of the inner tube 322, and the second electrode 35 is arranged at the other end of the inner tube 322. The outer side of the first electrode 34 and the outer side of the second electrode 35 are respectively matched with the inner side of the inner tube 322. The distance between the first electrode 34 and the second electrode 35 is greater than the safety distance. The refrigerant is a material that can directly contact the electrodes, such as nitrogen. At this time, the first electrode 34 and the second electrode 35 are respectively provided with through holes arranged along the axis of the lamp tube 32. The through hole of the first electrode 34, the inside of the inner tube 322 and the through hole of the second electrode 35 are connected to form Cooling channel 33; In summary, when no electrode is provided on the inner side of the inner tube 322, a cooling channel 33 is formed inside the inner tube 322; when an electrode is provided on the inner side of the inner tube 322 and the refrigerant is of a material that can directly contact the electrode, a through hole is provided on the electrode, and the through hole of the electrode and the inside of the inner tube 322 form a cooling channel 33; when an electrode is provided on the inner side of the inner tube 322 and the refrigerant is of a material that cannot directly contact the electrode, a cooling tube 331 passing through the electrode is provided in the inner tube 322, and a cooling channel 33 is formed inside the cooling tube 331.

[0031] Exemplarily, the fixing assembly 31 includes a fixing sleeve 311 and a pipe joint 312, the fixing sleeve 311 is sleeved on the end of the lamp tube 32, and the pipe joint 312 is installed on the fixing sleeve 311, that is, the two ends of the lamp tube 32 are respectively provided with fixing sleeves 311, and the two fixing sleeves 311 are respectively installed with pipe joints 312, one end of the cooling pipe 331 is connected to the input pipe 4 through the pipe joint 312 corresponding to the end, and the other end of the cooling pipe 331 is connected to the output pipe 5 through the pipe joint 312 corresponding to the end, which is convenient for the installation and fixation of the cooling pipe 331 and for the connection of the cooling pipe 331 with the input pipe 4 and the output pipe 5 respectively. The fixing sleeve 311 is also provided with a wire outlet hole so that the electrode can be connected to the power supply.

[0032] Exemplarily, a mounting assembly 7 is provided in the box body 1, and the mounting assembly 7 includes a fixing block 71 and a pressing block 72. The fixing block 71 is fixed to the bottom of the box body 1, and a first mounting groove 711 is provided on the top of the fixing block 71. The pressing block 72 is installed on the top of the fixing block 71. The pressing block 72 is connected to the fixing block 71 by bolts, and a second mounting groove 721 is provided on the bottom of the pressing block 72 to align with the first mounting groove 711. The first mounting groove 711 and the second mounting groove 721 are connected to form a mounting hole 73 that cooperates with the fixing sleeve 311, so as to facilitate the installation and fixation of the excimer lamp 3.

[0033] Exemplarily, an input connector 12 and an output connector 13 are provided on the side of the box body 1, and the input pipe 4 is connected to the input connector 12, and the refrigerant outside the box body 1 is transported to the input pipe 4 through the input connector 12 so that the input pipe 4 can access the refrigerant, and the output pipe 5 is connected to the output connector 13 so that the output pipe 5 can be connected to other components (cooling device or storage container) outside the box body 1.

[0034] In the example, an air inlet pipe 14 is provided in the box 1, and the air inlet pipe 14 is arranged in a circle around the inner circumference of the box 1. A plurality of exhaust ports 141 are evenly distributed on the air inlet pipe 14, and the air inlet pipe 14 is connected to a nitrogen supply source. In the present embodiment, an air inlet connector 142 is provided on the side of the box 1, and the air inlet pipe 14 and the nitrogen supply source are respectively connected to the air inlet connector 142, so that the air inlet pipe 14 is connected to the nitrogen supply source. An exhaust hole 15 is provided at the bottom of the box 1. Before the excimer lamp 3 works, the nitrogen supply source delivers nitrogen to the air inlet pipe 14, and then delivers it to the box 1 through the exhaust hole 15. Since the density of nitrogen is less than that of oxygen, the oxygen in the box 1 will be discharged out of the box 1 through the exhaust hole 15 located at the bottom of the box 1, and finally the box 1 is basically free of oxygen, thereby preventing the oxygen located near the excimer lamp 3 from affecting the output of ultraviolet rays, thereby affecting the working efficiency of the excimer lamp 3.

[0035] Exemplarily, a flow meter 6 is installed on the side of the box 1. The flow meter 6 is provided with an input port 61 and an output port 62. The input port 61 is connected to the nitrogen supply source, and the output port 62 is connected to the intake pipe 14. The flow meter 6 can detect the flow rate of the nitrogen delivered to the intake pipe 14. Since the volume in the box 1 is fixed and measurable, after knowing the volume in the box 1, it can be determined whether the oxygen in the box 1 is basically discharged according to the flow rate of the nitrogen input into the intake pipe 14 and the continuous introduction time.

[0036] Exemplarily, a first partition 8 is provided in the box body 1, and the first partition 8 divides the interior of the box body 1 into a first cavity 16 and a second cavity 17 which are arranged in sequence from bottom to top. The excimer lamp 3 is located in the first cavity 16, and a power supply assembly 171 connected to the excimer lamp 3 is provided in the second cavity 17. The setting of the first partition 8 helps to reduce the mutual influence between the excimer lamp 3 and the power supply assembly 171. The side of the second cavity 17 is provided with an air vent 172 and a cooling fan 173. The cooling fan 173 is connected to the outside, which helps to dissipate heat in the second cavity 17.

[0037] Exemplarily, a plurality of excimer lamps 3 are provided, a plurality of power supply components 171 are provided and connected one-to-one with the excimer lamps 3, and the plurality of power supply components 171 are arranged in the second cavity 17 along the lateral intervals of the housing 1, and air holes 172 are respectively provided on both sides of the longitudinal direction of the second cavity 17, and a cooling fan 173 is provided on one side of the lateral direction of the second cavity 17, and a blowing end of the cooling fan 173 is connected to the outside, and the cooling fan 173 pumps the air in the second cavity 17 to the outside, and the outside air enters the second cavity through the air holes 172. Since the plurality of power supply components 171 are arranged in the second cavity 17 along the lateral intervals of the housing 1, and the air holes 172 are located on both sides of the longitudinal direction of the second cavity 17, it helps the air entering the housing 1 from the outside to flow between two adjacent power supply components 171, thereby helping the heat dissipation of the power supply components 171.

[0038] Exemplarily, a second partition 9 is further provided in the box body 1, and a heat dissipation cavity 18 is formed between the first partition 8 and the second partition 9. The heat dissipation cavity 18 separates the first cavity 16 and the second cavity 17, which can reduce the mutual transfer of heat between the first cavity 16 and the second cavity 17. A plurality of heat dissipation holes 181 are provided on the side of the heat dissipation cavity 18, which help to dissipate the heat of the heat dissipation cavity 18.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An excimer light-emitting device, characterized in that: It includes a box body, a reflector, an excimer lamp, an input tube and an output tube. The bottom of the box body is provided with a light exit window. The reflector is installed in the box body. The bottom of the reflector is an opening and covers the light exit window. The excimer lamp is arranged in the reflector. The two ends of the excimer lamp respectively extend out of the reflector and are provided with fixing components. The fixing components are installed in the box body. The excimer lamp includes a lamp tube. The lamp tube includes an outer tube and an inner tube. The inner tube is coaxially arranged inside the outer tube. A sealed cavity is formed between the outer tube and the inner tube. The sealed cavity is filled with dischargeable gas. A cooling channel is provided in the inner tube. One end of the cooling channel is connected to the input tube, and the other end of the cooling channel is connected to the output tube. The input tube is connected to a refrigerant.

2. The excimer light-emitting device according to claim 1, characterized in that: The excimer lamp also includes a first electrode and a second electrode. The first electrode is sleeved on the outside of the outer tube, the second electrode is arranged in the inner tube and cooperates with the inner tube, a cooling tube is passed through the second electrode, and the interior of the cooling tube forms the cooling channel.

3. The excimer light-emitting device according to claim 2, characterized in that: The fixing assembly includes a fixing sleeve and a pipe joint, wherein the fixing sleeve is mounted on the end of the lamp tube, and the pipe joint is installed on the fixing sleeve. One end of the cooling pipe is connected to the input pipe via the pipe joint corresponding to the end, and the other end of the cooling pipe is connected to the output pipe via the pipe joint corresponding to the end.

4. The excimer light-emitting device according to claim 3, characterized in that: An installation assembly is provided in the box body, and the installation assembly includes a fixed block and a pressing block. The fixed block is fixed to the bottom of the box body, a first installation groove is provided on the top of the fixed block, and the pressing block is installed on the top of the fixed block. A second installation groove aligned with the first installation groove is provided on the bottom of the pressing block, and the first installation groove and the second installation groove are connected to form a mounting hole that cooperates with the fixing sleeve.

5. The excimer light-emitting device according to claim 1, characterized in that: An input joint and an output joint are provided on the side of the box body, the input pipe is connected to the input joint, and the output pipe is connected to the output joint.

6. The excimer light-emitting device according to claim 1, characterized in that: An air intake pipe is arranged in the box body, and the air intake pipe is arranged around the inner circumference of the box body. A plurality of exhaust ports are evenly distributed on the air intake pipe. The air intake pipe is connected to a nitrogen supply source, and an exhaust hole is arranged at the bottom of the box body.

7. The excimer light-emitting device according to claim 6, characterized in that: A flow meter is installed on the side of the box body. The flow meter is provided with an input port and an output port. The input port is connected to a nitrogen supply source, and the output port is connected to the air inlet pipe.

8. The excimer light-emitting device according to claim 1, characterized in that: A first partition is provided in the box body, and the first partition divides the interior of the box body into a first cavity and a second cavity arranged in sequence from bottom to top. The excimer lamp is located in the first cavity, and a power supply component connected to the excimer lamp is provided in the second cavity. The side of the second cavity is provided with an air vent and a cooling fan, and the cooling fan is connected to the outside.

9. The excimer light-emitting device according to claim 8, characterized in that: A plurality of the excimer lamps are provided, a plurality of the power supply components are provided and are connected to the excimer lamps one-to-one, the plurality of power supply components are arranged in the second cavity at intervals along the lateral direction of the box body, the air holes are respectively provided on both sides of the longitudinal direction of the second cavity, the cooling fan is provided on one lateral side of the second cavity, and the blowing end of the cooling fan is connected to the outside.

10. The excimer light-emitting device according to claim 8, characterized in that: A second partition is further provided in the box body, a heat dissipation cavity is formed between the first partition and the second partition, and a plurality of heat dissipation holes are provided on the side of the heat dissipation cavity.

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