Protective shell for wireless transmission in aspect of Internet of Things
By using a combination of limiting components and sealing airbags in the protective housing of the wireless transmission terminal, the problem of dust impurities entering the protective housing is solved, and the fire is delayed by introducing the thermal blocks and carbon dioxide into the exhaust tank under high temperatures, achieving higher sealing effect and safer fire resistance.
Patent Information
- Application Number
- CN202411936569.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the wiring male end of the existing wireless transmission terminal is connected to the external wiring male end, it is easy to cause dust and impurities to enter the protective shell, affecting the use of the equipment.
A wireless transmission protective shell for the Internet of Things is designed, using a combination of limiting components and sealed airbags to fill the gap between the terminal end and the through holes by sealing airbags, enhancing the sealing effect, and inducing the exhaust tank through thermal blocks and carbon dioxide in high temperatures to delay the fire.
It effectively reduces the possibility of external dust and moisture entering the protective shell, improves the stability of the connection, and delays the fire when the fire occurs, reduces losses, and buys time for fire extinguishing work.
Smart Images

Figure CN119893912A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of wireless transmission terminals, and specifically discloses a protective shell for wireless transmission in the Internet of Things. Background Art
[0002] DTU is a wireless terminal device specially used to convert serial port data into IP data or convert IP data into serial port data for transmission through a wireless communication network. The protective casing is used to protect the wireless transmission terminal and reduce the impact of the wireless transmission terminal on the outside world. However, when the female terminal of the existing wireless transmission terminal is connected to the male terminal of the external wire, the male terminal of the external wire needs to pass through the protective casing. The gap between the male terminal of the external wire and the protective casing can easily cause dust and impurities to enter the interior of the protective casing, affecting the use of the wireless transmission terminal. Summary of the invention
[0003] In view of this, the purpose of the present invention is to propose a protective shell for wireless transmission in the Internet of Things, so as to solve the problem that the gap between the external wiring male terminal and the protective shell in the prior art easily causes dust and impurities to enter the interior of the protective shell and affect the use of the wireless transmission terminal.
[0004] To achieve the above purpose, the present invention provides a protective housing for wireless transmission in the Internet of Things, comprising a base, a cover shell is arranged on the top of the base, a protective shell is formed between the base and the cover shell, sealing blocks are embedded and installed on opposite sides of the cover shell and the base, a wireless transmission terminal is arranged on the inner side of the sealing block inside the base, a wiring female terminal is arranged on the surface of the wireless transmission terminal, a groove is arranged on the bottom of one of the sealing blocks, a protrusion corresponding to the groove is arranged on the surface of the other sealing block, a through hole corresponding to the wiring female terminal is arranged on the top of the cover shell, a limiting component is arranged on the top of the cover shell, an auxiliary component is arranged inside one of the sealing blocks, and a connecting component is arranged on the surface of the protective shell; The position limiting assembly comprises a mounting plate fixedly connected to the top of the cover shell, a connection hole corresponding to the through hole is opened on the surface of the mounting plate, and a sealing airbag is embedded and installed inside the connection hole.
[0005] In the above technical solution, preferably, an air storage cavity is opened inside the mounting plate, the inner wall of the air storage cavity is slidably connected with a push plate, a first spring is fixedly connected between one side of the push plate and the inner wall of the air storage cavity, an adjusting cavity is formed between the other side of the push plate and the air storage cavity, the interior of the adjusting cavity is filled with carbon dioxide, and the surface of the sealed airbag is connected with a conduit connected to the adjusting cavity.
[0006] In the above technical solution, preferably, the inner wall of the mounting plate is slidably connected with a shift plate, the upper end of the shift plate passes through the mounting plate, one side of the shift plate is fixedly connected with a connecting rod, the other end of the connecting rod passes through the adjustment cavity and is fixedly connected to the surface of the push plate.
[0007] In the above technical solution, preferably, the limit assembly also includes a connecting cylinder arranged inside the mounting plate, the upper end of the connecting cylinder is connected to the adjusting chamber, the inner wall of the connecting cylinder is fixedly connected with a seal, the seal is a polyethylene wax material component, the surface of the connecting cylinder is connected with two symmetrically distributed connecting shells, the top of the connecting shell is provided with a notch, and the seal blocks the connection between the connecting shell and the connecting cylinder.
[0008] In the above technical solution, preferably, a heat-conducting block is provided inside the sealing member, a heat-conducting rod is fixedly connected to the bottom of the heat-conducting block, and the lower end of the heat-conducting rod penetrates into the interior of the protective shell.
[0009] In the above technical solution, preferably, an installation cavity is opened inside the protective shell, an exhaust groove is opened on the inner wall of the installation cavity, the connecting tube is fixedly connected to the inner wall of the installation cavity, the connecting shell is located inside the exhaust groove, and the opening cross-section of the exhaust groove is larger than the cross-section of the connecting shell.
[0010] In the above technical solution, preferably, the connecting assembly includes four first mounting columns distributed in a rectangular array and fixedly connected to the cover shell, the bottom of the first mounting column is fixedly connected to an insertion rod, and a groove is provided on the surface of the insertion rod.
[0011] In the above technical solution, preferably, a second mounting column corresponding to the cover shell is fixedly connected to the surface of the base, a slot corresponding to the insertion rod is opened on the top of the second mounting column, a connecting block is fixedly connected between the two second mounting columns, a clamping block is slidably connected to the inner wall of the slot, the cross-sectional shape of the clamping block is a right triangle, and a second spring is fixedly connected between one side of the clamping block and the inner wall of the connecting block.
[0012] In the above technical solution, preferably, the inner wall of the connecting block is rotatably connected to a rotating shaft, one end of the rotating shaft passes through the connecting block and is fixedly connected to a knob, and two connecting ropes are provided on the surface of the rotating shaft, and the other ends of the two connecting ropes are respectively fixedly connected to the surfaces of the two clamping blocks.
[0013] In the above technical solution, preferably, the auxiliary component includes a heat conducting plate fixedly connected to the inside of the sealing block, the top of the heat conducting plate is fixedly connected with evenly distributed heat conducting strips, the upper ends of the heat conducting strips pass through the sealing block and contact the surface of the wireless transmission terminal, ventilation grooves are provided on the surface of the heat conducting strips, a grounding wire is provided on one side of the heat conducting plate, a ventilation cavity is provided on one side of the base, a filter is fixedly connected to the inner wall of the ventilation cavity, the ventilation grooves are communicated with the ventilation cavity, and the heat conducting strips and the heat conducting plate are both aluminum metal components.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The setting of the limit component can fill the gap between the external wire male terminal and the connection hole by inflating the sealing airbag after the external wire male terminal is connected to the wire female terminal, thereby strengthening the sealing effect of the penetration point and reducing the external dust and impurities and even moisture from entering the interior of the protective shell through the connection gap to affect the use of the wireless transmission terminal. In addition, the inflated sealing airbag can squeeze the surface of the external wire male terminal, increase the resistance and reduce the possibility of the external wire male terminal falling off, thereby improving the stability of the connection.
[0015] 2. When a fire occurs inside the protective shell, the high temperature of the fire is transferred to the heat conductive block through the heat conductive rod, so that it can melt the seal, so that the seal no longer blocks the connection between the connecting shell and the connecting tube. At this time, carbon dioxide can be introduced into the interior of the protective shell through the connecting tube, the connecting shell and the exhaust groove to dilute the oxygen, so as to delay the fire or even extinguish the fire, reduce losses, and buy precious time for fire extinguishing work.
[0016] 3. The setting of the limit component can quickly install and disassemble the cover and the base, which is convenient for subsequent maintenance and repair work. At the same time, the setting of auxiliary components can reduce the impact of heat accumulation on the wireless transmission terminal, and the grounding treatment with the grounding wire can reduce the interference of static electricity on the wireless transmission terminal. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a separation schematic diagram of the present invention; Figure 3 Schematic diagram of the distribution of through holes of the present invention; Figure 4 for Figure 3 A magnified view of middle; Figure 5 It is a partial cross-sectional schematic diagram of the limiting component of the present invention; Figure 6 It is a schematic diagram of the connection between the sealing member and the heat conducting block of the present invention; Figure 7 It is a schematic diagram of the connection between the connecting block and the second mounting column of the present invention; Figure 8 It is a schematic diagram of the connection between the auxiliary component and the sealing block of the present invention; Fig. 9 for Figure 8 Enlarged view of B.
[0018] In the figure: 1, base; 101, cover shell; 102, installation cavity; 103, exhaust groove; 104, sealing block; 105, protrusion; 106, through hole; 2, wireless transmission terminal; 201, wiring female terminal; 3, limit assembly; 301, installation plate; 302, dial plate; 303, connecting rod; 304, guide tube; 305, sealing airbag; 306, first spring; 307, push plate; 308, connecting tube; 309, sealing member; 310, connecting shell; 311, heat conductive block; 312, heat conductive rod; 4, connecting assembly; 401, first mounting column; 402, plug rod; 403, slot; 404, connecting block; 405, second mounting column; 406, knob; 407, slot; 408, block; 409, second spring; 410, connecting rope; 5, auxiliary assembly; 501, grounding wire; 502, heat conductive plate; 503, heat conductive strip; 504, filter. DETAILED DESCRIPTION
[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0021] like Figure 1-Figure 9 A protective housing for wireless transmission in the Internet of Things shown in the figure comprises a base 1, a cover shell 101 is arranged on the top of the base 1, a protective shell is formed between the base 1 and the cover shell 101, sealing blocks 104 are embedded and installed on opposite sides of the cover shell 101 and the base 1, a wireless transmission terminal 2 is arranged on the inner side of the sealing block 104 on the inner side of the base 1, a female wiring terminal 201 is arranged on the surface of the wireless transmission terminal 2, a groove is provided at the bottom of one of the sealing blocks 104, a protrusion 105 corresponding to the groove is provided on the surface of the other sealing block 104, a through hole 106 corresponding to the female wiring terminal 201 is provided on the top of the cover shell 101, a limiting component 3 is arranged on the top of the cover shell 101, an auxiliary component 5 is arranged inside one of the sealing blocks 104, and a connecting component 4 is arranged on the surface of the protective shell; The limiting assembly 3 includes a mounting plate 301 fixedly connected to the top of the cover shell 101 , a connection hole corresponding to the through hole 106 is opened on the surface of the mounting plate 301 , and a sealing airbag 305 is embedded and installed inside the connection hole.
[0022] like Figure 1-Figure 9 As shown, an air storage cavity is provided inside the mounting plate 301, and a push plate 307 is slidably connected to the inner wall of the air storage cavity. A first spring 306 is fixedly connected between one side of the push plate 307 and the inner wall of the air storage cavity. A regulating cavity is formed between the other side of the push plate 307 and the air storage cavity. The interior of the regulating cavity is filled with carbon dioxide, and a conduit 304 connected to the regulating cavity is connected to the surface of the sealing airbag 305.
[0023] The inner wall of the mounting plate 301 is slidably connected with a dial plate 302 , the upper end of the dial plate 302 passes through the mounting plate 301 , one side of the dial plate 302 is fixedly connected with a connecting rod 303 , the other end of the connecting rod 303 passes through the adjustment cavity and is fixedly connected to the surface of the push plate 307 .
[0024] The limiting assembly 3 also includes a connecting tube 308 arranged inside the mounting plate 301, the upper end of the connecting tube 308 is connected to the adjusting chamber, the inner wall of the connecting tube 308 is fixedly connected with a sealing member 309, the sealing member 309 is a polyethylene wax material member, the surface of the connecting tube 308 is connected with two symmetrically distributed connecting shells 310, the top of the connecting shell 310 is provided with a notch, and the sealing member 309 blocks the connection between the connecting shell 310 and the connecting tube 308.
[0025] A heat-conducting block 311 is disposed inside the sealing member 309 , and a heat-conducting rod 312 is fixedly connected to the bottom of the heat-conducting block 311 , and the lower end of the heat-conducting rod 312 penetrates into the interior of the protective shell.
[0026] An installation cavity 102 is opened inside the protective shell, and an exhaust groove 103 is opened on the inner wall of the installation cavity 102. The connecting tube 308 is fixedly connected to the inner wall of the installation cavity 102. The connecting shell 310 is located inside the exhaust groove 103, and the opening cross-section of the exhaust groove 103 is larger than the cross-section of the connecting shell 310.
[0027] Under normal conditions, the first spring 306 can maintain the position of the push plate 307 so that the push plate 307 squeezes the carbon dioxide stored in the regulating chamber and injects it into the sealed airbag 305 to achieve the effect of inflating the sealed airbag 305 .
[0028] When the external wiring male terminal is plugged into the wiring female terminal 201, by pulling the dial plate 302 to slide along the inner wall of the mounting plate 301, the push plate 307 can be pushed to slide along the inner wall of the air storage cavity and compress the first spring 306 under the action of the connecting rod 303. In this process, the internal space of the regulating cavity can be increased, so that the sealing airbag 305 can inject the internal carbon dioxide into the regulating cavity through the conduit 304 under the action of its own elastic force, and reduce the bulging amplitude, so as to facilitate the connection between the external wiring male terminal and the wiring female terminal 201. After the connection is completed, the dial plate 302 can be released to drive the push plate 307 to reset under the action of the first spring 306. In this process, the carbon dioxide stored in the regulating cavity is squeezed and injected into the sealing airbag 305, so as to achieve the effect of bulging the sealing airbag 305 so that the sealing airbag 305 fills the gap in the connection hole, preventing external dust, impurities and moisture from entering the interior of the protective shell and affecting the use of the wireless transmission terminal 2, effectively improving the sealing effect, and preventing dust from entering the connection gap inside the protective shell through the traditional external wiring male terminal and affecting the use of the wireless transmission terminal 2. When a fire occurs due to a failure of the wireless transmission terminal 2, the high temperature of the fire is transferred to the heat conductive block 311 through the heat conductive rod 312, so that the seal 309 can be melted, so that the seal 309 no longer blocks the connection between the connecting shell 310 and the connecting tube 308. At this time, carbon dioxide can be introduced into the interior of the protective shell through the connecting tube 308, the connecting shell 310 and the exhaust groove 103 to dilute the oxygen, so as to delay the fire or even extinguish the fire, reduce losses, and buy precious time for fire extinguishing work.
[0029] like Figure 1-Figure 9 As shown, the connection assembly 4 includes four first mounting posts 401 distributed in a rectangular array and fixedly connected to the cover shell 101 , a plug rod 402 is fixedly connected to the bottom of the first mounting post 401 , and a slot 403 is formed on the surface of the plug rod 402 .
[0030] A second mounting column 405 corresponding to the cover shell 101 is fixedly connected to the surface of the base 1, a slot 407 corresponding to the insertion rod 402 is provided at the top of the second mounting column 405, a connecting block 404 is fixedly connected between the two second mounting columns 405, a clamping block 408 is slidably connected to the inner wall of the slot 407, and the cross-sectional shape of the clamping block 408 is a right triangle, and a second spring 409 is fixedly connected between one side of the clamping block 408 and the inner wall of the connecting block 404.
[0031] The inner wall of the connecting block 404 is rotatably connected to a rotating shaft, one end of which passes through the connecting block 404 and is fixedly connected to a knob 406. Two connecting ropes 410 are provided on the surface of the rotating shaft, and the other ends of the two connecting ropes 410 are fixedly connected to the surfaces of the two clamping blocks 408 respectively.
[0032] When the cover shell 101 is connected to the base 1, the insertion rod 402 is inserted into the interior of the slot 407. During this process, the insertion rod 402 can squeeze the inclined surface of the block 408 to make it shrink to the interior of the connecting block 404 and compress the second spring 409 until it is installed in place. At this time, the slot 403 is aligned with the block 408, and the block 408 can be driven to reset under the action of the second spring 409, thereby completing the limitation of the insertion rod 402. When disassembling, the knob 406 can be turned to drive the rotating shaft to reel in the two connecting ropes 410, thereby synchronously pulling the two blocks 408 on the same side to separate from the slot 403, and the limitation of the insertion rod 402 can be released. The installation and disassembly method is simple, which is convenient for subsequent maintenance and repair.
[0033] like Figure 1-Figure 9 As shown, the auxiliary component 5 includes a heat conducting plate 502 fixedly connected to the inside of the sealing block 104, and the top of the heat conducting plate 502 is fixedly connected with evenly distributed heat conducting strips 503, and the upper ends of the heat conducting strips 503 pass through the sealing block 104 and contact the surface of the wireless transmission terminal 2. A ventilation groove is provided on the surface of the heat conducting strip 503, and a grounding wire 501 is provided on one side of the heat conducting plate 502. A ventilation cavity is provided on one side of the base 1, and a filter screen 504 is fixedly connected to the inner wall of the ventilation cavity. The ventilation grooves are connected to the ventilation cavity, and the heat conducting strips 503 and the heat conducting plate 502 are both aluminum metal components.
[0034] The heat-conducting strip 503 and the heat-conducting plate 502 made of aluminum metal material can effectively absorb heat, and the setting of the ventilation cavity and the ventilation groove can maintain good air exchange and reduce the influence of heat accumulation on the wireless transmission terminal 2. At the same time, since the heat-conducting strip 503 and the heat-conducting plate 502 are made of aluminum metal material, they can be grounded in conjunction with the grounding wire 501 to reduce the interference of static electricity on the wireless transmission terminal 2.
[0035] Working principle: During the working process, the auxiliary component 5 can maintain good air exchange and reduce the influence of heat accumulation on the wireless transmission terminal 2. At the same time, since the heat-conducting strip 503 and the heat-conducting plate 502 are aluminum metal components, they can be grounded with the grounding wire 501 to reduce the interference of static electricity on the wireless transmission terminal 2. When a fire occurs, the high temperature is transmitted to the heat-conducting block 311 through the heat-conducting rod 312, so that it can melt the seal 309, so that the seal 309 no longer blocks the connection between the connecting shell 310 and the connecting cylinder 308. At this time, carbon dioxide can be introduced into the interior of the protective shell through the connecting cylinder 308, the connecting shell 310 and the exhaust groove 103 to dilute the oxygen, so as to achieve the effect of delaying the fire or even extinguishing the fire, reduce losses, and gain precious time for fire extinguishing work. The setting of the limit component 3 can effectively prevent external dust, impurities and moisture from entering the interior of the protective shell to affect the use of the wireless transmission terminal 2, effectively improve the sealing effect, and avoid dust from entering the connection gap inside the protective shell through the traditional external wire male end to affect the use of the wireless transmission terminal 2.
[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A protective housing for wireless transmission in the Internet of Things, comprising a base (1), characterized in that: A cover shell (101) is arranged on the top of the base (1), a protective shell is formed between the base (1) and the cover shell (101), sealing blocks (104) are embedded and installed on opposite sides of the cover shell (101) and the base (1), a wireless transmission terminal (2) is arranged on the inner side of the sealing block (104) inside the base (1), a female terminal (201) is arranged on the surface of the wireless transmission terminal (2), a groove is arranged on the bottom of one of the sealing blocks (104), a protrusion (105) corresponding to the groove is arranged on the surface of the other sealing block (104), a through hole (106) corresponding to the female terminal (201) is arranged on the top of the cover shell (101), a limiting component (3) is arranged on the top of the cover shell (101), an auxiliary component (5) is arranged inside one of the sealing blocks (104), and a connecting component (4) is arranged on the surface of the protective shell; The limiting assembly (3) comprises a mounting plate (301) fixedly connected to the top of the cover shell (101), a connection hole corresponding to the through hole (106) is provided on the surface of the mounting plate (301), and a sealing airbag (305) is embedded and installed inside the connection hole.
2. The protective housing for wireless transmission in the Internet of Things according to claim 1, characterized in that: An air storage cavity is provided inside the mounting plate (301), the inner wall of the air storage cavity is slidably connected to a push plate (307), a first spring (306) is fixedly connected between one side of the push plate (307) and the inner wall of the air storage cavity, an adjustment cavity is formed between the other side of the push plate (307) and the air storage cavity, the interior of the adjustment cavity is filled with carbon dioxide, and a conduit (304) connected to the adjustment cavity is connected to the surface of the sealing airbag (305).
3. The protective housing for wireless transmission in the Internet of Things according to claim 2, characterized in that: The inner wall of the mounting plate (301) is slidably connected to a dial plate (302), the upper end of the dial plate (302) passes through the mounting plate (301), one side of the dial plate (302) is fixedly connected to a connecting rod (303), the other end of the connecting rod (303) passes through the adjustment cavity and is fixedly connected to the surface of the push plate (307).
4. The protective housing for wireless transmission in the Internet of Things according to claim 3, characterized in that: The position limiting assembly (3) further comprises a connecting tube (308) arranged inside the mounting plate (301); the upper end of the connecting tube (308) is connected to the regulating chamber; a sealing member (309) is fixedly connected to the inner wall of the connecting tube (308); the sealing member (309) is a member made of a polyethylene wax material; the surface of the connecting tube (308) is connected to two connecting shells (310) which are symmetrically distributed; a notch is formed on the top of the connecting shell (310); and the sealing member (309) blocks the connection between the connecting shell (310) and the connecting tube (308).
5. The protective housing for wireless transmission in the Internet of Things according to claim 4, characterized in that: A heat-conducting block (311) is arranged inside the sealing member (309), a heat-conducting rod (312) is fixedly connected to the bottom of the heat-conducting block (311), and the lower end of the heat-conducting rod (312) penetrates into the interior of the protective shell.
6. The protective housing for wireless transmission in the Internet of Things according to claim 5, characterized in that: An installation cavity (102) is provided inside the protective shell, an exhaust groove (103) is provided on the inner wall of the installation cavity (102), the connecting tube (308) is fixedly connected to the inner wall of the installation cavity (102), the connecting shell (310) is located inside the exhaust groove (103), and the opening cross section of the exhaust groove (103) is larger than the cross section of the connecting shell (310).
7. The protective housing for wireless transmission in the Internet of Things according to claim 1, characterized in that: The connection assembly (4) comprises four first mounting columns (401) distributed in a rectangular array and fixedly connected to the cover shell (101); an insertion rod (402) is fixedly connected to the bottom of the first mounting column (401); and a slot (403) is provided on the surface of the insertion rod (402).
8. The protective housing for wireless transmission in the Internet of Things according to claim 7, characterized in that: A second mounting column (405) corresponding to the cover shell (101) is fixedly connected to the surface of the base (1); a slot (407) corresponding to the insertion rod (402) is provided at the top of the second mounting column (405); a connecting block (404) is fixedly connected between the two second mounting columns (405); a clamping block (408) is slidably connected to the inner wall of the slot (407); the cross-section of the clamping block (408) is in the shape of a right triangle; and a second spring (409) is fixedly connected between one side of the clamping block (408) and the inner wall of the connecting block (404).
9. The protective housing for wireless transmission in the Internet of Things according to claim 8, characterized in that: The inner wall of the connecting block (404) is rotatably connected to a rotating shaft, one end of the rotating shaft passes through the connecting block (404) and is fixedly connected to a knob (406), and two connecting ropes (410) are provided on the surface of the rotating shaft, and the other ends of the two connecting ropes (410) are respectively fixedly connected to the surfaces of the two clamping blocks (408).
10. The protective housing for wireless transmission in the Internet of Things according to claim 1, characterized in that: The auxiliary component (5) comprises a heat conducting plate (502) fixedly connected to the inside of the sealing block (104); the top of the heat conducting plate (502) is fixedly connected to uniformly distributed heat conducting strips (503); the upper ends of the heat conducting strips (503) penetrate through the sealing block (104) and contact the surface of the wireless transmission terminal (2); ventilation grooves are provided on the surface of the heat conducting strips (503); a grounding wire (501) is provided on one side of the heat conducting plate (502); a ventilation cavity is provided on one side of the base (1); a filter screen (504) is fixedly connected to the inner wall of the ventilation cavity; the ventilation grooves are connected to the ventilation cavity; and the heat conducting strips (503) and the heat conducting plate (502) are both aluminum metal components.