Low-frequency filter

Abstract

The low-frequency filter comprises a box body module and a filtering module, the filtering module is arranged in the box body module, the box body module comprises a main body, a front plate and a heat dissipation unit, and the main body is provided with a first side plate, a second side plate, a bottom plate and a rear plate which are integrally formed. The bottom plate and the rear plate are both located between the first side plate and the second side plate, the top of the first side plate is provided with a first ventilation and heat dissipation area, and the bottom of the first side plate is provided with a second ventilation and heat dissipation area. According to the low-frequency filter disclosed by the utility model, the main body, the front plate and the heat dissipation unit are linked, after the heat dissipation fan is started, the temperature in the heat dissipation device can be quickly dissipated from the ventilation heat dissipation areas of the side plates and the rear plate, and the low-frequency filter has the advantages of stable structure, high safety, efficient heat dissipation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and particularly relates to a low-frequency filter. Background Art

[0002] A low-frequency filter is an electronic filter, and its main function is to allow low-frequency signals to pass through while blocking or reducing the transmission of high-frequency signals. In signal processing, low-frequency filters are usually used to remove high-frequency noise or interference in signals and retain useful low-frequency components. Many of the existing casings of low-frequency filters lack a heat dissipation structure, so that the circuit board continuously heats up during the operation of the filter, cannot be effectively cooled, has certain potential safety hazards and is prone to damage components.

[0003] Therefore, in view of the above problems, further improvements are made. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a low-frequency filter, which is linked by a main body, a front panel and a heat dissipation unit. After the cooling fan is started, the temperature in the radiator can be quickly dissipated from the ventilation and heat dissipation areas of the side panels and the rear panel. It has the advantages of stable structure, high safety and efficient heat dissipation.

[0005] To achieve the above object, the utility model provides a low-frequency filter, including a box body module and a filtering module, wherein the filtering module is built in the box body module, and:

[0006] The box body module includes a main body, a front panel and a heat dissipation unit. The main body is provided with integrally formed first side panels, second side panels, a bottom plate and a rear panel. The bottom plate and the rear panel are both located between the first side panels and the second side panels. The top of the first side panels is provided with a first ventilation and heat dissipation area, and the bottom of the first side panels (the side close to the bottom plate) is provided with a second ventilation and heat dissipation area. The top of the second side panels is provided with a third ventilation and heat dissipation area, and the bottom of the second side panels (the side close to the bottom plate) is provided with a fourth ventilation and heat dissipation area. The bottom of the rear panel is provided with a fifth ventilation and heat dissipation area;

[0007] The front panel is fixedly installed between the first side panels and the second side panels, and the front panel is provided with an air inlet area, a display area, a first handle and a second handle. The display area is located above the air inlet area, and both the air inlet area and the display area are located between the first handle and the second handle;

[0008] The heat dissipation unit includes a fan mounting plate and a plurality of cooling fans. The fan mounting plate is fixedly installed between the first side panels and the second side panels, and the fan mounting plate is located inside the front panel. The cooling fans are fixedly installed on the fan mounting plate;

[0009] The filtering module includes a circuit board, a heat sink, and a plurality of connection terminals connected to the circuit board. The heat sink is mounted on the circuit board and is located on the side of the heat dissipation fan away from the front panel.

[0010] As a further preferred technical solution of the above technical solution, the rear panel is provided with a connection terminal installation area, and the connection terminal is located in the connection terminal installation area.

[0011] As a further preferred technical solution of the above technical solution, the blowing direction of the heat dissipation fan faces the rear panel.

[0012] As a further preferred technical solution of the above technical solution, the box body module further includes a cover plate, and the cover plate covers the main body.

[0013] As a further preferred technical solution of the above technical solution, a plurality of heat dissipation racks are provided on the outside of the cover plate. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a low-frequency filter of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the main body of a low-frequency filter of the present invention.

[0016] Figure 3 It is a schematic structural diagram of a low-frequency filter of the present invention.

[0017] Figure 4 It is a schematic structural diagram of a low-frequency filter of the present invention.

[0018] The reference numerals include: 100, main body; 110, first side plate; 111, first ventilation and heat dissipation area; 112, second ventilation and heat dissipation area; 120, second side plate; 121, third ventilation and heat dissipation area; 122, fourth ventilation and heat dissipation area; 130, bottom plate; 140, rear plate; 141, fifth ventilation and heat dissipation area; 142, connection terminal installation area; 200, front panel; 210, air inlet area; 220, display area; 230, first handle; 240, second handle; 300, heat dissipation unit; 310, fan mounting plate; 320, heat dissipation fan; 400, filtering module; 410, circuit board; 420, heat sink; 430, connection terminal. Detailed Description of the Invention

[0019] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variants. The basic principles defined in the following description of the present utility model can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0020] The present utility model discloses a low-frequency filter. The specific embodiments of the utility model will be further described below in conjunction with the preferred embodiments.

[0021] In the embodiments of the present utility model, those skilled in the art should note that the circuit boards and the like involved in the present utility model can be regarded as the prior art.

[0022] Preferred embodiment.

[0023] As Figures 1-4 shown, the present utility model discloses a low-frequency filter, including a box body module and a filtering module 400. The filtering module is built in the box body module 400, wherein:

[0024] The box body module includes a main body 100, a front plate 200 and a heat dissipation unit 300. The main body 100 is provided with an integrally formed first side plate 110, a second side plate 120, a bottom plate 130 and a rear plate 140. The bottom plate 130 and the rear plate 140 are both located between the first side plate 110 and the second side plate 120. The top of the first side plate 110 is provided with a first ventilation and heat dissipation area 111, and the bottom of the first side plate 110 (the side close to the bottom plate) is provided with a second ventilation and heat dissipation area 112. The top of the second side plate 120 is provided with a third ventilation and heat dissipation area 121, and the bottom of the second side plate 120 (the side close to the bottom plate) is provided with a fourth ventilation and heat dissipation area 122. The bottom of the rear plate 140 is provided with a fifth ventilation and heat dissipation area 141;

[0025] The front plate 200 is fixedly installed between the first side plate 110 and the second side plate 120, and the front plate 200 is provided with an air inlet area 210, a display area 220, a first handle 230 and a second handle 240. The display area 220 is located above the air inlet area 210, and both the air inlet area 210 and the display area 220 are located between the first handle 230 and the second handle 240;

[0026] The heat dissipation unit 300 includes a fan mounting plate 310 and a plurality of heat dissipation fans 320. The fan mounting plate 310 is fixedly installed between the first side plate 110 and the second side plate 120 and the fan mounting plate 310 is located inside the front plate 200. The heat dissipation fans 320 are fixedly installed on the fan mounting plate 310;

[0027] The filtering module 400 includes a circuit board 410, a radiator 420, and a plurality of connection terminals 430 connected to the circuit board 410. The radiator 420 is installed on the circuit board 410 and the radiator 420 is located on the side of the heat dissipation fan 320 away from the front plate 200.

[0028] Specifically, the rear plate 140 is provided with a connection terminal installation area 142, and the connection terminals 430 are located in the connection terminal installation area 142.

[0029] More specifically, the blowing direction of the heat dissipation fan 320 faces the rear plate 140.

[0030] Furthermore, the box body module further includes a cover plate (not shown), and the cover plate covers the main body.

[0031] Even further, a plurality of heat dissipation racks are provided on the outside of the cover plate.

[0032] Preferably, start the heat dissipation fan, introduce normal temperature air from the air inlet area, and then blow out the hot air that has passed through the radiator and risen from the ventilation and heat dissipation areas of the side plates and the rear plate on both sides, reducing the temperature of the radiator and the circuit board. Air can be discharged from both sides and the rear, achieving efficient heat dissipation.

[0033] It is worth mentioning that technical features such as the circuit board involved in the patent application of the present utility model should be regarded as the prior art. For the specific structures, working principles, and possible control methods and spatial arrangement methods of these technical features, conventional selections in the art can be adopted, and they should not be regarded as the inventive points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0034] For those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A low-frequency filter, characterized in that, It includes a box body module and a filtering module, and the filtering module is built in the box body module, wherein: The box body module includes a main body, a front panel and a heat dissipation unit. The main body is provided with integrally formed first side plates, second side plates, a bottom plate and a rear plate. The bottom plate and the rear plate are both located between the first side plates and the second side plates. The top of the first side plates is provided with a first ventilation and heat dissipation area and the bottom of the first side plates is provided with a second ventilation and heat dissipation area. The top of the second side plates is provided with a third ventilation and heat dissipation area and the bottom of the second side plates is provided with a fourth ventilation and heat dissipation area. The bottom of the rear plate is provided with a fifth ventilation and heat dissipation area; The front panel is fixedly installed between the first side plates and the second side plates, and the front panel is provided with an air inlet area, a display area, a first handle and a second handle. The display area is located above the air inlet area and both the air inlet area and the display area are located between the first handle and the second handle; The heat dissipation unit includes a fan mounting plate and a plurality of heat dissipation fans. The fan mounting plate is fixedly installed between the first side plates and the second side plates and the fan mounting plate is located inside the front panel. The heat dissipation fans are fixedly installed on the fan mounting plate; The filtering module includes a circuit board, a radiator and a plurality of connection ends connected to the circuit board. The radiator is installed on the circuit board and the radiator is located on the side of the heat dissipation fans away from the front panel.

2. The low-frequency filter according to claim 1, characterized in that The rear plate is provided with a connection end installation area, and the connection ends are located in the connection end installation area.

3. The low-frequency filter according to claim 2, wherein The blowing direction of the heat dissipation fans is towards the rear plate.

4. The low-frequency filter according to claim 3, wherein The box body module further includes a cover plate, and the cover plate covers the main body.

5. A low-frequency filter according to claim 4, characterized in that, A plurality of heat dissipation racks are provided on the outside of the cover plate.

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