Heat dissipation and dust prevention device for notebook computer

Abstract

The invention discloses a heat dissipation and dust prevention device for a notebook computer, and belongs to the technical field of notebook computer heat dissipation bases, the heat dissipation and dust prevention device comprises an air blowing assembly, the air blowing assembly comprises a dust prevention box, a rubber pad is fixedly connected to the upper side wall of the dust prevention box, and a centrifugal fan is fixedly connected to the lower side wall of the dust prevention box; branched pipes are communicated among the plurality of filtering assemblies, and air pipes are communicated between the branched pipes and the centrifugal fan; the filtering assembly comprises an air cylinder, a filtering cylinder is arranged in the middle of the air cylinder, a scraping block is slidably connected to the interior of the air cylinder, and an annular block is fixedly connected to the air cylinder. External air is guided into the filtering assembly through the centrifugal fan, and the filtering assembly can filter dust in the air, so that it is ensured that airflow flowing through the interior of the filtering assembly facilitates heat dissipation of a notebook computer; meanwhile, the dust removal assembly is matched, dust filtered out by the air duct can be automatically cleaned, and the ventilation performance and the heat dissipation efficiency of the filtering assembly are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of notebook heat dissipation bases, in particular to a heat dissipation and dust prevention device for a notebook computer. Background Art

[0002] As an important product of modern technology, laptops have become the preferred device for learning, work and entertainment with their excellent portability, efficient performance and versatility. Many young people and professionals rely on laptops for daily office tasks, online learning, and gaming entertainment. However, when running programs or games involving a large amount of resources for a long time, laptops are prone to overheating, which will not only affect system performance, causing freezes or crashes, but may also shorten the life of the device. In order to effectively address this problem, heat dissipation bases have emerged and have become an ideal accessory for laptop users. The heat dissipation base provides additional cooling support to help the laptop maintain a suitable temperature and ensure that it can still run stably under high load. A suitable heat dissipation base can not only extend the life of the laptop and protect its internal components from heat, but also greatly improve the overall user experience.

[0003] A Chinese patent discloses an adjustable notebook heat dissipation base that is easy to clean (authorization announcement number 201810922434.5). The patent includes a base shell, and two groups of folding upper covers are movably installed on the upper outer surface of the base shell, and a limiting buckle is movably installed on the upper outer surface of the base shell near the lower middle position of the two groups of folding upper covers, the middle position of the inner surface on both sides of the base shell is slidably connected with a second slide buckle, and the middle position of the upper inner surface of the base shell is slidably connected with a first slide buckle, two groups of joint grooves are provided on the inner side of the front part of the base shell, and a fixed base is movably installed under the base shell, the base shell and the fixed base are movably connected through a rotating shaft, and anti-slip legs are fixedly installed at the four corners of the lower outer surface of the base shell.

[0005] In the above patent, although the heat dissipation base improves the heat dissipation effect of the laptop computer by increasing the air intake, it will also cause dust to be sucked into the laptop, thereby aggravating the dust accumulation phenomenon, and further deteriorating the ventilation environment of the laptop, resulting in poor heat dissipation of the laptop. In addition, the existing heat dissipation base is also prone to dust accumulation, and cleaning the dust requires manual operation, which is extremely inconvenient. Therefore, a heat dissipation and dust prevention device for a laptop computer is proposed to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a heat dissipation and dust prevention device for a notebook computer to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A heat dissipation and dust prevention device for a notebook computer comprises a blowing assembly, the blowing assembly comprises a dust box, a rubber pad is fixedly connected to the upper side wall of the dust box, a centrifugal fan is fixedly connected to the lower side wall of the dust box, a plurality of filter assemblies are arranged inside the dust box, branch pipes are connected between the plurality of filter assemblies, and a duct is connected between the branch pipe and the centrifugal fan;

[0009] The filter assembly includes an air cylinder, a filter cylinder is arranged in the middle of the air cylinder, a scraper block is slidably connected to the inside of the air cylinder, an annular block is fixedly connected to the air cylinder, a movable sleeve is slidably connected to the air cylinder, a telescopic tube is fixedly connected between the annular block and the movable sleeve, a dust removal assembly is arranged inside the air cylinder for driving the scraper block and the movable sleeve to move together, and the same valve assembly is fixedly connected between multiple air cylinders.

[0010] As a further solution of the present invention, the dust removal assembly includes two rotating rods rotatably connected to the lower side wall of the wind cylinder, and two winding drums are fixedly connected to the two rotating rods. Pull ropes are wrapped around the multiple winding drums, and two sets of pull ropes are fixedly connected to the scraper block and the movable sleeve respectively.

[0011] As a further solution of the present invention, two dustproof shells are fixedly connected to the lower inner wall of the air duct, and the rotating rod is located inside the dustproof shell, and the pull rope is arranged to pass through the dustproof shell.

[0012] As a further solution of the present invention, the lower ends of the two rotating rods are fixedly connected to belt gears, and the same toothed belt is sleeved between the two belt gears. A worm gear is fixedly connected to the lower side wall of one of the belt gears, and a worm gear meshing with the worm gear is rotatably connected between the left and right inner walls of the dust box.

[0013] As a further solution of the present invention, the valve assembly includes a motor fixedly connected to the side wall of the dustproof box, and the output end of the motor is fixedly connected to the worm.

[0014] As a further solution of the present invention, a first pulley is fixedly connected to the worm, a plurality of air ducts are connected to a same valve cylinder, a valve column is rotatably connected inside the valve cylinder, a second pulley is rotatably connected to one end of the valve column, a belt is sleeved between the second pulley and the first pulley, a plurality of valve holes are drilled on the belt corresponding to the air ducts respectively, and a ventilation assembly is fixedly connected to the valve column.

[0015] As a further solution of the present invention, the ventilation assembly includes a plurality of regulating ports drilled on the valve cylinder, and a plurality of thrust cylinders corresponding to the regulating ports are fixedly connected to the side wall of the valve column.

[0016] As a further solution of the present invention, a dustproof net is installed on the upper side wall of the dustproof box, a baffle located on the lower side of the dustproof net is slidably connected to the lower inner wall of the dustproof box, a fixed plate is fixedly connected to the lower inner wall of the dustproof box, two plug rods are fixedly connected to the side wall of the baffle, both plug rods pass through the fixed plate and are fixedly connected to a spring plate, and a spring is fixedly connected between the spring plate and the fixed plate.

[0017] As a further solution of the present invention, wind speed sensors are fixedly connected inside the plurality of air ducts, and the wind speed sensors are electrically connected to the motor.

[0018] As a further solution of the present invention, a dust collecting assembly is arranged at the rear side of the dustproof box, and the dust collecting assembly includes a dust collecting box plugged into a plurality of air cylinders, and a dust collecting net is installed on the side wall of the dust collecting box.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the present invention is used, external air is introduced into the filter assembly through the centrifugal fan, and the filter assembly can filter dust in the air, thereby ensuring that the airflow flowing through the interior thereof not only helps the notebook to dissipate heat, but also effectively reduces the intrusion of dust. At the same time, in conjunction with the dust removal assembly, it can automatically clean the dust filtered out by the air duct, further improving the ventilation performance and heat dissipation efficiency of the filter assembly.

[0021] 2. When the present invention is used, when the dust removal component is cleaning the filter component, the baffle can be opened through the ventilation component to allow external air to enter the notebook after being filtered through the dustproof net. This can avoid the poor heat dissipation effect of the notebook due to insufficient air flow during cleaning.

[0022] 3. When the present invention is used, the ventilation of the filter assembly can be monitored in real time through the wind speed sensor. When the ventilation of the filter assembly deteriorates, it will automatically drive the dust removal assembly to clean the filter assembly through the valve assembly, thereby maintaining the ventilation of the filter assembly at a high level and improving the stability of the heat dissipation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a heat dissipation and dust prevention device for a notebook computer;

[0024] Figure 2 This is a schematic diagram of the structure of a blowing component in a heat dissipation and dust prevention device for a notebook computer;

[0025] Figure 3 This is a schematic diagram of the structure of a filter component in a heat dissipation and dust prevention device for a notebook computer;

[0026] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the structure inside a dustproof box in a heat dissipation and dustproof device for a notebook computer;

[0028] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0029] Figure 7 This is a schematic diagram of the structure of a valve assembly in a heat dissipation and dust prevention device for a notebook computer;

[0030] Figure 8 This is a schematic diagram of the structure of part of a heat dissipation and dust prevention device for a notebook computer;

[0031] Fig. 9 This is a schematic diagram of the structure of a wind speed sensor in a heat dissipation and dust prevention device for a notebook computer;

[0032] Fig.10 The figure is a state diagram of a dust removal component in a heat dissipation and dust prevention device for a notebook computer during cleaning.

[0033] In the figure:

[0034] 1. Blowing assembly; 101. Dust box; 102. Rubber pad; 103. Centrifugal fan; 104. Air duct; 105. Branch pipe;

[0035] 2. Filter assembly; 201. Air cylinder; 202. Filter cartridge; 203. Scraper block; 204. Ring block; 205. Moving sleeve; 206. Telescopic tube;

[0036] 3. Dust removal assembly; 301. Rotating rod; 302. Winding reel; 303. Pull rope; 304. Dust cover; 305. Belt gear; 306. Toothed belt; 307. Worm wheel; 308. Worm;

[0037] 4. Valve assembly; 401. Motor; 402. First pulley; 403. Valve cylinder; 404. Valve column; 405. Second pulley; 406. Belt; 407. Valve hole;

[0038] 5. Ventilation assembly; 501. Adjustment port; 502. Thrust cylinder; 503. Dust screen; 504. Baffle; 505. Fixing plate; 506. Insert rod; 507. Spring plate; 508. Spring;

[0039] 6. Wind speed sensor;

[0040] 7. Dust collection assembly; 701. Dust collection box; 702. Dust collection net. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1: Please refer to Figures 1 to 7 In an embodiment of the present invention, a heat dissipation and dust prevention device for a laptop computer includes a blowing component 1, the blowing component 1 includes a dust box 101, a plurality of air outlets are cut out on the upper side wall of the dust box 101, a rubber pad 102 is fixedly connected to the upper side wall of the dust box 101, and the rubber pad 102 is arranged in multiple circles, so that it can adapt to notebooks of different sizes, so that the rubber pad 102 can fully fit with the bottom of the notebook to prevent external air from directly entering the notebook, a centrifugal fan 103 is fixedly connected to the lower side wall of the dust box 101, and a plurality of filter components 2 for filtering air are arranged inside the dust box 101, a branch pipe 105 is connected between the plurality of filter components 2, and a duct 104 is connected between the branch pipe 105 and the centrifugal fan 103, and when the centrifugal fan 103 is started, external air enters the filter component 2 through the duct 104 and the branch pipe 105.

[0043] The filter assembly 2 includes a wind tube 201, a filter cartridge 202 is arranged in the middle of the wind tube 201, a scraper block 203 is slidably connected inside the wind tube 201, an annular block 204 is fixedly connected to the wind tube 201, a movable sleeve 205 is slidably connected to the wind tube 201, a telescopic tube 206 is fixedly connected between the annular block 204 and the movable sleeve 205, a dust removal assembly 3 is arranged inside the wind tube 201 to drive the scraper block 203 and the movable sleeve 205 to move together, a same valve assembly 4 is fixedly connected between the multiple wind tubes 201, and the dust removal assembly 3 includes two rotating rods 301 rotatably connected to the lower side wall of the wind tube 201, and the two rotating rods 301 are The two winding discs 302 are fixedly connected, and a pull rope 303 is wound around the plurality of winding discs 302, and the two sets of pull ropes 303 are fixedly connected to the scraper block 203 and the movable sleeve 205 respectively. Since the two winding discs 302 fixed on the rotating rod 301 have the same diameter, when the two winding discs 302 rotate at the same time, the scraper block 203 and the movable sleeve 205 can move at the same time, and the lower inner wall of the wind tube 201 is fixedly connected to two dustproof shells 304, and the rotating rod 301 is located inside the dustproof shell 304, and the pull rope 303 runs through the dustproof shell 304. The lower ends of the two rotating rods 301 are fixedly connected to belt gears 305. The two belt gears The same toothed belt 306 is sleeved between the wheels 305. When the two belt gears 305 rotate in the same direction through the toothed belt 306, the two rotating rods 301 drive the winding disc 302 to rotate, so that the two sets of winding discs 302 can unwind and rewind the pull rope 303 respectively when rotating, thereby preventing the winding disc 302 from being unable to rotate due to the restriction of the pull rope 303. A worm gear 307 is fixedly connected to the lower side wall of one of the belt gears 305, and a worm 308 meshing with the worm gear 307 is rotatably connected between the inner walls on the left and right sides of the dustproof box 101. When the rotating rod 301 rotates, it can be rotated through the belt gear 305 and the toothed belt 30 6 drives another rotating rod 301 to rotate. During the rotation of the two rotating rods 301, the two winding discs 302 can respectively wind up and unwind the pull rope 303, and then the two pull ropes 303 respectively pull the movable sleeve 205 and the scraper block 203 to move. When the movable sleeve 205 and the scraper block 203 move to the filter cylinder 202, the air introduced into the air cylinder 201 will bypass the scraper block 203 and enter from the outside of the filter cylinder 202, thereby effectively back-blowing the dust on the inner wall of the filter cylinder 202, so that the dust can be blown away, and the dust with strong adhesion that cannot be blown away will also be scraped away under the push of the scraper block 203.

[0044] The valve assembly 4 includes a motor 401 fixedly connected to the side wall of the dustproof box 101, and the output end of the motor 401 is fixedly connected to the worm 308, the worm 308 is fixedly connected to a first pulley 402, a plurality of air cylinders 201 are connected to a same valve cylinder 403, a valve column 404 is rotatably connected inside the valve cylinder 403, one end of the valve column 404 is rotatably connected to a second pulley 405 through a damping bearing, a belt 406 is sleeved between the second pulley 405 and the first pulley 402, a plurality of valve holes 407 corresponding to the air cylinders 201 are drilled on the belt 406, a ventilation assembly 5 is fixedly connected to the valve column 404, In the initial state, the valve hole 407 is not connected to the air duct 201, so the air introduced into the air duct 201 can only be discharged after being filtered by the filter cartridge 202. When the motor 401 is started, the worm 308 starts to rotate, and the worm 308 drives multiple worm wheels 307 to rotate together, so that the worm wheels 307 can drive the belt gear 305 and the rotating rod 301 to rotate. At the same time, the worm 308 drives the valve column 404 to rotate under the action of friction through the first pulley 402 and the second pulley 405, so that the valve hole 407 is connected to the air duct 201. At this time, the air introduced into the air duct 201 will blow the cleaned dust into the dust collecting component 7.

[0045] It is worth noting that since the second pulley 405 is rotatably connected to the valve column 404 through a damping bearing, the second pulley 405 drives the valve column 404 to rotate through friction. During the rotation of the valve column 404, the thrust cylinder 502 will be driven to rotate together. By limiting the thrust cylinder 502 through the adjustment port 501, the valve column 404 can only rotate 90 degrees. Therefore, after the valve column 404 rotates to connect the valve hole 407 with the wind cylinder 201, the valve column 404 will no longer continue to rotate.

[0046] Example 2: Please refer to Figures 8 to 10Based on Example 1, the ventilation component 5 includes a plurality of adjustment ports 501 opened on the valve cylinder 403 and located between the two air cylinders 201. A plurality of thrust cylinders 502 corresponding to the adjustment ports 501 are fixedly connected to the side wall of the valve column 404. The adjustment ports 501 can limit the thrust cylinder 502 so that the thrust cylinder 502 has a range of 90 degrees of upward rotation. A dustproof net 503 is installed on the upper side wall of the dustproof box 101. A baffle 504 located on the lower side of the dustproof net 503 is slidably connected to the lower inner wall of the dustproof box 101. A fixing plate 505 is fixedly connected to the lower inner wall of the dustproof box 101. Two plug rods 506 are fixedly connected to the side wall of the baffle 504. The two plug rods 506 both penetrate the fixing plate 505 and are fixedly connected to a spring plate 50 7. A spring 508 is fixedly connected between the spring plate 507 and the fixed plate 505. When the dust inside the air duct 201 is cleaned, the telescopic tube 206 will block the filter cartridge 202, so that the air introduced into the air duct 201 is no longer completely filtered and discharged through the filter cartridge 202. At this time, the notebook is in a poorly ventilated state. To change this situation, when the valve column 404 drives the thrust cylinder 502 to rotate, the thrust cylinder 502 can not only limit the angle of the valve column 404, but also push the baffle 504 so that the baffle 504 no longer blocks the dust net 503. At this time, the dust box 101 is connected to the interior through the dust net 503, so that the external air passes through the dust net 503 before entering the notebook.

[0047] Wind speed sensors 6 are fixedly connected to the inside of multiple air ducts 104, and the wind speed sensors 6 are electrically connected to the motor 401 through a microcomputer and a controller. When a large amount of dust accumulates inside the filter cartridge 202, the ventilation of the filter cartridge 202 will deteriorate. At this time, the air intake of the air duct 104 will also decrease. At the same time, the wind speed will be monitored by the wind speed sensor 6, and the monitored value will be processed by a microprocessor. When the wind speed value is less than the set value, the motor 401 will be started through the controller, thereby automatically cleaning the dust inside the filter cartridge 202.

[0048] A dust collecting assembly 7 for collecting dust is provided on the rear side of the dustproof box 101. The dust collecting assembly 7 includes a dust collecting box 701 which is plugged into one end of multiple air tubes 201 through multiple sleeves. A dust collecting net 702 is installed on the side wall of the dust collecting box 701. During the cleaning process of the dust inside the filter cylinder 202, the blown air and the dust will be blown into the dust collecting box 701 together, and the dust in the air will be effectively blocked by the dust collecting net 702, so that the dust collecting box 701 can collect dust, which is convenient for the user to clean the dust regularly, and can also be used to inform the user of the amount of dust in the current air environment.

[0049] Among them, the centrifugal fan 103, the motor 401, and the wind speed sensor 6 are all existing technologies, and their structural principles will not be repeated. At the same time, the device also includes a power supply, a switch, a controller, a power supply cable and other devices, which are not the main technologies and will not be described in detail.

[0050] The working principle of the present invention is:

[0051] When the present invention is in use, the user can first start the centrifugal fan 103 to allow external air to enter the filter assembly 2 through the air duct 104 and the branch pipe 105, so that the filter cartridge 202 can filter dust in the air, ensuring that the airflow flowing through the filter cartridge 202 not only helps the notebook dissipate heat, but also effectively reduces the entry of dust.

[0052] When too much dust accumulates inside the filter cartridge 202, its inner wall needs to be cleaned. At this time, the user can start the motor 401 to drive the worm 308 through the worm wheel 307 to drive the belt gear 305 to rotate. The belt gear 305 further drives the two rotating rods 301 inside the air cylinder 201 to rotate in the same direction through the toothed belt 306. In this way, the two winding disks 302 can respectively wind up and unwind the pull rope 303, so that the pull rope 303 can pull the movable sleeve 205 and the scraper block 203 to move together. When the movable sleeve 205 and the scraper block 203 move into the filter cartridge 202, the air introduced into the air cylinder 201 will bypass the scraper block 203 and enter from the outside of the filter cartridge 202, forming The reverse airflow effectively blows away the dust on the inner wall of the filter cartridge 202. Some dust with strong adhesion will also be scraped off under the push of the scraper block 203. At the same time, when the worm 308 rotates, it drives the second pulley 405 to rotate through the first pulley 402 and the belt 406, and the second pulley 405 drives the valve column 404 to rotate through the friction force of the damping bearing, so that the valve hole 407 is connected with the air cylinder 201. At this time, the introduced air will blow the cleaned dust into the dust box 701, and the dust in the air will be filtered through the dust collecting net 702, so that the dust box 701 plays the role of collecting dust, which is convenient for users to clean dust regularly and can be used to help users estimate the amount of dust in the current air.

[0053] When the valve column 404 drives the thrust cylinder 502 to rotate, the thrust cylinder 502 pushes the baffle 504, driving the baffle 504 to move. At this time, the dust box 101 is connected to the interior through the dust net 503, so that the external air enters the notebook after being filtered by the dust net 503, avoiding affecting the heat dissipation of the notebook.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat dissipation and dust prevention device for a notebook computer, comprising a blowing assembly (1), characterized in that: The air blowing assembly (1) comprises a dustproof box (101), the upper side wall of the dustproof box (101) is fixedly connected to a rubber pad (102), the lower side wall of the dustproof box (101) is fixedly connected to a centrifugal fan (103), a plurality of filter assemblies (2) are arranged inside the dustproof box (101), a branch pipe (105) is connected between the plurality of filter assemblies (2), and a wind duct (104) is connected between the branch pipe (105) and the centrifugal fan (103); The filter assembly (2) comprises a wind tube (201), a filter cartridge (202) is arranged in the middle of the wind tube (201), a scraper block (203) is slidably connected inside the wind tube (201), an annular block (204) is fixedly connected to the wind tube (201), a movable sleeve (205) is slidably connected to the wind tube (201), a telescopic tube (206) is fixedly connected between the annular block (204) and the movable sleeve (205), a dust removal assembly (3) is arranged inside the wind tube (201) for driving the scraper block (203) and the movable sleeve (205) to move together, and a same valve assembly (4) is fixedly connected between a plurality of wind tubes (201).

2. A heat dissipation and dust prevention device for a notebook computer according to claim 1, characterized in that: The dust removal assembly (3) comprises two rotating rods (301) rotatably connected to the lower side wall of the wind tube (201), two winding discs (302) are fixedly connected to the two rotating rods (301), a plurality of winding discs (302) are wound with a pull rope (303), and two groups of pull ropes (303) are fixedly connected to the scraper block (203) and the movable sleeve (205), respectively.

3. The heat dissipation and dust prevention device for a notebook computer according to claim 2, characterized in that: Two dustproof shells (304) are fixedly connected to the lower inner wall of the wind tube (201), and the rotating rod (301) is located inside the dustproof shell (304), and the pull rope (303) is arranged to penetrate the dustproof shell (304).

4. The heat dissipation and dust prevention device for a notebook computer according to claim 3, characterized in that: The lower ends of the two rotating rods (301) are fixedly connected to belt gears (305), and a toothed belt (306) is sleeved between the two belt gears (305). A worm gear (307) is fixedly connected to the lower side wall of one of the belt gears (305), and a worm (308) meshing with the worm gear (307) is rotatably connected between the inner walls on the left and right sides of the dustproof box (101).

5. The heat dissipation and dust prevention device for a notebook computer according to claim 3, characterized in that: The valve assembly (4) comprises a motor (401) fixedly connected to the side wall of the dustproof box (101), and the output end of the motor (401) is fixedly connected to the worm (308).

6. The heat dissipation and dust prevention device for a notebook computer according to claim 5, characterized in that: A first pulley (402) is fixedly connected to the worm gear (308); a plurality of the air cylinders (201) are connected to a same valve cylinder (403); a valve column (404) is rotatably connected inside the valve cylinder (403); one end of the valve column (404) is rotatably connected to a second pulley (405); a belt (406) is sleeved between the second pulley (405) and the first pulley (402); a plurality of valve holes (407) corresponding to the air cylinders (201) are bored on the belt (406); and a ventilation assembly (5) is fixedly connected to the valve column (404).

7. The heat dissipation and dust prevention device for a notebook computer according to claim 6, characterized in that: The ventilation assembly (5) comprises a plurality of regulating ports (501) bored on the valve cylinder (403), and a plurality of thrust cylinders (502) respectively corresponding to the regulating ports (501) are fixedly connected to the side wall of the valve column (404).

8. The heat dissipation and dust prevention device for a notebook computer according to claim 7, characterized in that: A dustproof net (503) is installed on the upper side wall of the dustproof box (101); a baffle (504) located on the lower side of the dustproof net (503) is slidably connected to the lower inner wall of the dustproof box (101); a fixing plate (505) is fixedly connected to the lower inner wall of the dustproof box (101); two plug rods (506) are fixedly connected to the side wall of the baffle (504); both of the two plug rods (506) pass through the fixing plate (505) and are fixedly connected to a spring plate (507); a spring (508) is fixedly connected between the spring plate (507) and the fixing plate (505).

9. The heat dissipation and dust prevention device for a notebook computer according to claim 1, characterized in that: A wind speed sensor (6) is fixedly connected inside each of the plurality of air ducts (104), and the wind speed sensor (6) is electrically connected to the motor (401).

10. The heat dissipation and dust prevention device for a notebook computer according to claim 8, characterized in that: A dust collecting assembly (7) is arranged on the rear side of the dustproof box (101), and the dust collecting assembly (7) comprises a dust collecting box (701) plugged into a plurality of air cylinders (201), and a dust collecting net (702) is installed on the side wall of the dust collecting box (701).

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