A dust cover for circuit board components to facilitate heat dissipation

Abstract

This utility model discloses a dust cover for circuit board components that facilitates heat dissipation. A dustproof mesh is embedded within the collector shroud of the air intake shroud. The dustproof mesh is located on both sides of the large end of the collector shroud, with its pointed corner at the center of the small end. The upper end of a pressure relief pipe connects to the inner cavity of the pressurization chamber, and the lower side of the pressure relief pipe is sleeved on the upper side of the inner hole of a clamping pipe. A toothed nut is sleeved on the external thread on the upper side of the clamping pipe, and the lower end of the clamping pipe connects to the inner cavity of the shroud. A base plate is placed at the lower end of the shroud, with the circuit board components located on the upper side of the base plate and inside the shroud. Support legs are located on the lower side of the base plate, with the lower ends of the support legs resting on the circuit board, forming a ventilation gap between the shroud and the circuit board. This utility model's air intake shroud is positioned above the "component cluster," directly facing the direction of the cooling fan, collecting stronger and cooler cooling air for better air cooling performance. The dustproof mesh is a mirror-symmetrical double trapezoid with a V-shaped cross-section, increasing the area and reducing pressure loss during the pressurization process of the collector shroud. Even with reduced pore size, it still achieves both dust prevention and heat dissipation.

Description

Technical Field

[0001] This utility model belongs to the field of dustproof and heat dissipation technology of electrical components, and specifically relates to a dustproof cover for heat dissipation circuit board components. Background Technology

[0002] As circuit boards for small devices develop towards integration, miniaturization, and high precision, the demand for miniaturized circuit board components and high mounting density is increasing. However, due to their small size and surface area, miniature components have serious heat dissipation problems. Because of their miniaturization and the high mounting density of circuit boards in small devices, even power components do not have enough space to be equipped with individual fans. If custom miniature fans are made, they are too small and have their own heat dissipation problems. Usually, cooling fans are set in the casing and circuit board to draw in cold air from outside the device for air cooling.

[0003] When the cooling fan draws in cold air from outside the equipment for cooling, dust also enters the equipment and adheres to the circuit board components. Over time, the accumulated dust and impurities will affect the insulation and heat dissipation of the circuit board components, easily causing them to malfunction due to excessive temperature and reduced insulation. This problem is even more serious in harsh environments such as production workshops or construction sites where there are high temperatures and heavy dust.

[0004] Dust covers can effectively protect circuit board components from dust. However, the high density of components due to the integration and miniaturization of circuit boards creates a "component jungle," resulting in significant air resistance and hindering heat dissipation. Adding dust covers would further increase air resistance and make heat dissipation even more difficult. Balancing dust protection and air cooling for miniature components has become an unsolved problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dust cover for circuit board components that combines air cooling and dust prevention.

[0006] The specific solution of this utility model is as follows: A dust cover for circuit board components that facilitates heat dissipation includes: an exhaust hood, a pressure relief pipe, a toothed nut, a clamping pipe, a cover body, support feet, a base plate, circuit board components, and a dustproof net; the dustproof net is embedded in the cone-shaped conical structure of the large end of the exhaust hood, with both sides of the large end of the dustproof net located on the lateral sides of the large end of the exhaust hood and the pointed corner of the small end of the dustproof net located in the center of the small end of the concentrator; the upper end of the pressure relief pipe is connected to the inner cavity of the pressure boosting chamber through a through hole on the lower side of the pressure boosting chamber at the small end of the exhaust hood, and the lower side of the pressure relief pipe is sleeved on the upper side of the inner hole of the clamping pipe; the toothed nut is sleeved on the external thread on the upper side of the clamping pipe, and the lower end of the clamping pipe is connected to the inner cavity of the cover body through a through hole on the upper side of the cover body; the base plate is placed at the lower end of the cover body, the circuit board components are located on the upper side of the base plate and inside the cover body, the support feet are located on the lower side of the base plate, and the lower ends of the support feet are placed on the circuit board to support the cover body, forming a ventilation gap between the cover body and the circuit board.

[0007] The air intake hood includes a large-end collecting hood and a small-end pressurizing chamber, with the small end of the collecting hood connected to the left opening of the small-end pressurizing chamber.

[0008] The flow collector is a four-sided trapezoidal cone, larger on the left and smaller on the right, and transparent on both sides.

[0009] The pressurization chamber is rectangular, with an opening on the left side connecting to the small end of the manifold, and a through hole on the lower side connecting to the pressure relief pipe.

[0010] The toothed nut has an outer circle of evenly distributed pointed teeth, and the screw hole is a tapered pipe thread that matches the upper side of the clamping tube.

[0011] The upper thread of the clamping tube is a tapered tube thread that matches the threaded hole of the toothed nut, and the upper end is provided with two rectangular grooves that are symmetrically mirrored in the center.

[0012] The base plate is a grid plate, which facilitates the lead wires of circuit board components and the exhaust and pressure relief of the enclosure.

[0013] The dustproof net is a mirror-symmetrical double trapezoidal V-shaped cross-section structure.

[0014] Compared with existing related technologies, this utility model has the following advantages: This invention features excellent heat dissipation: the air intake shroud of this invention is a four-sided trapezoidal cone with a rectangular air inlet at its left end, which can fully improve space utilization and ensure the air inlet area; the air intake shroud is located above the "component jungle" and faces the air delivery direction of the cooling fan, which can better collect cooling air that is stronger and cooler than the "component jungle", and force it into the shroud through the high-pressure chamber of the pressurization chamber, thereby cooling the circuit board components inside the shroud and effectively improving the air cooling effect.

[0015] This invention has a good dustproof effect: the dustproof net is a mirror-symmetrical double trapezoidal V-shaped cross-section structure, which increases the ventilation area, effectively reduces drag, reduces pore size, and improves filtration accuracy.

[0016] This utility model can take into account both dust prevention and heat dissipation: the dustproof net is a mirror-symmetrical double trapezoidal V-shaped cross-section structure, which increases the ventilation area, effectively reduces drag, and reduces pressure loss during the flow collection and pressurization process of the flow collector. Even with reduced pore size, it can ensure that a high-pressure chamber is formed in the pressurization chamber, which forces the collected cooling air into the cover, thus taking into account both dust prevention and heat dissipation.

[0017] This invention is more suitable for small and micro components: Based on the installation space of the equipment housing and circuit board, the height of the exhaust hood can be adjusted by raising and lowering the pressure relief pipe, placing the exhaust hood above the "component jungle" to avoid interference between the exhaust hood and other circuit board components, thus occupying less space. This invention uses needle-nose pliers to tighten / loosen toothed nuts and to tighten / loosen the pressure relief pipe by extending and retracting the inner diameter of the clamping tube. Compared to a wrench, the tip of the needle-nose pliers is finer and sharper, and the inner side of the tip is also toothed, enabling operation of small nuts that are difficult to grip with a wrench. This is more conducive to nut miniaturization and the overall miniaturization of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a bottom view of the air intake cover of this utility model; Figure 3 This is a top view of the toothed nut of this utility model; Figure 4 This is a front view of the clamping tube of this utility model; Figure 5 This is a top view of the clamping tube of this utility model; Figure 6 This is a top view of the dustproof net of this utility model; Figure 7 This is a diagram showing the unfolded shape of the dustproof netting of this utility model. Detailed Implementation

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a dust cover for circuit board components that facilitates heat dissipation includes: an exhaust shroud 1, a pressure relief pipe 2, a toothed nut 3, a clamping pipe 4, a cover body 5, support legs 6, a base plate 7, circuit board components 8, and a dustproof net 9; the dustproof net 9 is embedded in the cone-shaped current collector 1-1 at the large end of the exhaust shroud 1, with the two sides of the large end of the dustproof net 9 located on the lateral sides of the large end of the current collector 1-1, and the pointed corner of the small end of the dustproof net 9 located in the center of the small end of the current collector 1-1; the upper end of the pressure relief pipe 2 extends through the small end of the exhaust shroud 1... The lower through hole of the pressure chamber 1-2 connects to the inner cavity of the pressure chamber 1-2. The lower side of the pressure relief pipe 2 is sleeved on the upper side of the inner hole of the clamping pipe 4. The toothed nut 3 is sleeved on the upper external thread of the clamping pipe 4. The lower end of the clamping pipe 4 is connected to the inner cavity of the cover 5 through the upper through hole of the cover 5. The base plate 7 is placed at the lower end of the cover 5. The circuit board component 8 is located on the upper side of the base plate 7 and inside the cover 5. The support leg 6 is located on the lower side of the base plate 7. The lower end of the support leg 6 is placed on the circuit board to support the cover 5 and form a ventilation gap between the cover 5 and the circuit board.

[0020] The air intake hood 1 includes: a large end collecting hood 1-1 and a small end pressurizing chamber 1-2, with the small end of the collecting hood 1-1 connected to the left opening of the small end pressurizing chamber 1-2.

[0021] The flow collector shroud 1-1 is a four-sided trapezoidal cone, larger on the left and smaller on the right, and transparent on both sides.

[0022] The pressurization chamber 1-2 is a rectangular body with an opening on the left side connected to the small end of the manifold 1-1 and a through hole on the lower side connected to the pressure relief pipe 2.

[0023] The toothed nut 3 has an outer circle of evenly distributed pointed teeth, and the screw hole is a tapered pipe thread that matches the upper side of the clamping tube 4.

[0024] The upper thread of the clamping tube 4 is a tapered tube thread that matches the screw hole of the toothed nut 3, and the upper end is provided with two rectangular grooves that are symmetrically mirrored in the center.

[0025] The base plate 7 is a grid plate, which facilitates the exhaust and pressure relief of the circuit board components 8 leads and the cover 5.

[0026] The dustproof net 9 is a mirror-symmetrical double trapezoidal V-shaped cross-section structure.

[0027] When installing this utility model on a circuit board, first use needle-nose pliers to loosen the toothed nut 3. According to the air supply direction of the cooling fan, rotate the pressure relief pipe 2 to adjust the angle of the air duct 1 so that it faces the air supply direction. According to the installation space of the equipment housing and the circuit board, adjust the height of the air duct 1 by raising and lowering the pressure relief pipe 2 so that the air duct 1 is placed above the "component jungle". After positioning, use needle-nose pliers to tighten the toothed nut 3. By squeezing the tapered pipe thread on the upper side of the clamping pipe 4, the inner diameter of the upper end of the clamping pipe 4 is reduced to clamp the pressure relief pipe 2 (such as a telescopic rod drag structure or a compass needle tip chuck) to achieve fastening.

[0028] The air intake shroud is located above the "component jungle" and faces the direction of the cooling fan's airflow. It can better collect cooling air that is stronger and cooler than the "component jungle". After the cooling air is collected and pressurized by the collector shroud 1-1, it enters the pressurization chamber 1-2 and forms a high-pressure chamber in the pressurization chamber 1-2. The high-pressure air in the high-pressure chamber is forced into the cover 5 through the pressure relief pipe 2 and clamping pipe 4 on the lower side of the pressurization chamber 1-2, increasing the air pressure in the inner cavity of the cover 5. The air pressure is then released through the exhaust gap between the base plate 7 and the circuit board, forming an airflow path of air intake shroud 1-pressure relief pipe 2-clamping pipe 4-cover 5-base plate 7.

[0029] Dust filter 9 filters out dust and impurities from the cooling air during the process of airflow collection and pressurization through the large end collector shroud 1-1 of the air duct 1. Dust filter 9 has a mirror-symmetrical double trapezoidal, V-shaped cross-section structure, effectively increasing the unfolded area (e.g., ...). Figure 7The increased ventilation area effectively reduces drag and pressure loss during the pressurization process of the shroud 1-1. Even with reduced pore size, it ensures the formation of a high-pressure chamber within the pressurization chamber 1-2, which forces the collected cooling air into the shroud 5, thus achieving both dust prevention and heat dissipation.

Claims

1. A dust cover for circuit board components that facilitates heat dissipation, comprising: The components include: an exhaust hood, a pressure relief pipe, a toothed nut, a clamping pipe, a hood body, support legs, a base plate, circuit board components, and a dustproof net. The lower side of the pressure relief pipe is sleeved onto the upper side of the inner hole of the clamping pipe. The toothed nut is sleeved onto the external thread on the upper side of the clamping pipe, and the lower end of the clamping pipe connects to the inner cavity of the hood body through a through hole on the upper side of the hood body. The base plate is placed at the lower end of the hood body, and the circuit board components are located on the upper side of the base plate and inside the hood body. The dustproof net is embedded in the cone of the large end of the exhaust hood's collector hood, with both sides of the large end of the dustproof net located on the lateral sides of the large end of the large end of the collector hood, and the pointed corner of the small end of the dustproof net located in the center of the small end of the collector hood. The upper end of the pressure relief pipe connects to the inner cavity of the pressurization chamber through a through hole on the lower side of the pressurization chamber at the small end of the exhaust hood. The support legs are located on the lower side of the base plate, and the lower ends of the support legs are placed on the circuit board.

2. The dust cover for circuit board components that facilitates heat dissipation according to claim 1, characterized in that: The air intake hood includes a large-end collecting hood and a small-end pressurizing chamber, with the small end of the collecting hood connected to the left opening of the small-end pressurizing chamber.

3. A dust cover for circuit board components that facilitates heat dissipation according to claim 1 or 2, characterized in that: The flow collector is a four-sided trapezoidal cone, larger on the left and smaller on the right, and transparent on both sides.

4. A dust cover for circuit board components that facilitates heat dissipation according to claim 3, characterized in that: The pressurization chamber is a rectangular body with an opening on the left side and a through hole on the lower side.

5. A dust cover for circuit board components that facilitates heat dissipation according to claim 4, characterized in that: The base plate is a grid plate.

6. A dust cover for circuit board components that facilitates heat dissipation according to claim 5, characterized in that: The dustproof net is a mirror-symmetrical double trapezoidal V-shaped cross-section structure.

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