Dustproof circuit board

Abstract

The utility model relates to the field of circuit boards, in particular to a dustproof circuit board which comprises a circuit board body, a first fixing plate and a second fixing plate, the first fixing plate is installed on the lower side of the circuit board body, the second fixing plate is installed on the upper side of the circuit board body, most heat of the circuit board body is transmitted downwards through a heat conduction silica gel sheet, and a fireproof coating layer is arranged in the middle. A first side plate and a second side plate are installed on the upper side of the circuit board body, a first filter screen is installed on the first side plate, a second filter screen is installed on the second side plate, and heat dissipation dustproof films are installed on the inner sides of the first side plate and the second side plate. A small part of heat dissipated upwards can be effectively dissipated, and dust is effectively prevented from falling into the circuit board main body.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, in particular to a dustproof circuit board. Background Art

[0002] A circuit board (PCB) can be called a printed circuit board or printed circuit board. A circuit board is composed of an integrated circuit, a quartz oscillator, a fine-tuning capacitor and a printed circuit board. The names of circuit boards include ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, etc. Circuit boards make circuits miniaturized and intuitive, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. In electronic equipment, it is mainly used to connect various electronic components and plays the role of a structural support. A Chinese patent discloses a dustproof circuit board (authorization announcement number CN 219812396 U), this patented technology can transfer part of the heat of the circuit board body downward to the heat conductive sheet, and then transfer it to each heat exchange fin, and finally exchange heat with the air through the heat exchange fins, so as to achieve heat dissipation of the circuit board body, and at the same time, the remaining part of the heat of the circuit board body is dissipated from the dust filter at the upper end of the mounting frame, and because the dust filter can block the dust, in this solution, by setting the mounting frame, the dust filter and the heat conductive sheet on the upper and lower surfaces of the circuit board body, the dust is blocked by the mounting frame, the dust filter and the heat conductive sheet, so as to achieve dustproof treatment of the circuit board, and at the same time, under the action of the heat conductive sheet and the dust filter, the circuit board body can still have a good heat dissipation effect, but the mounting frame and the dust filter can only isolate part of the dust, and cannot isolate all the dust, and the designed heat dissipation structure is simple. Therefore, those skilled in the art provide a dustproof circuit board to solve the problems raised in the above background technology. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a dustproof circuit board, including a circuit board body, a first fixing plate, and a second fixing plate. The first fixing plate is installed on the lower side of the circuit board body, and the second fixing plate is installed on the upper side of the circuit board body.

[0004] Preferably: the circuit board body is provided with No. 1 screw holes at four vertex corners, the No. 1 fixing plate is provided with No. 2 screw holes at four vertex corners, the No. 2 fixing plate is provided with No. 3 screw holes at four vertex corners, and the circuit board body, the No. 1 fixing plate and the No. 2 fixing plate are fixedly installed by nuts;

[0005] Preferably: a slot plate is installed in the middle of the first fixing plate, and an assembly slot is provided in the slot plate;

[0006] Preferably: a heat-conducting silicone sheet is installed on the uppermost layer in the assembly groove, a fire-retardant coating layer is installed on the lower side of the heat-conducting silicone sheet, and a heat-dissipating resin layer is installed on the lower side of the fire-retardant coating layer;

[0007] Preferably: a bottom plate is installed on the lower side of the heat dissipation resin layer, and a plurality of heat dissipation holes of the same size are provided on the bottom plate;

[0008] Preferably: a No. 2 side plate is installed on the left and right sides of the middle position of the No. 2 fixing plate, and a No. 2 filter screen is installed on the No. 2 side plate;

[0009] Preferably: a No. 1 side plate is installed on both sides of the middle position of the No. 2 fixing plate, a No. 1 filter is installed on the No. 1 side plate, a No. 2 card plate is installed on the upper side of the inner wall of the No. 1 side plate, and a No. 3 card plate is installed on the upper side of the No. 2 card plate;

[0010] Preferably: a first card board is installed in the middle of the circuit board body, and heat dissipation and dustproof films are installed on the side ends of the first card board and the second card board;

[0011] Preferably: a top plate is installed on the upper side of the No. 1 side plate and the No. 2 side plate, a No. 3 filter is installed on the top plate, and a heat dissipation and dustproof film is installed between the top plate and the No. 3 card plate.

[0012] Technical effects and advantages of the utility model:

[0013] 1. Most of the heat of the circuit board body is transferred downward through the thermal conductive silicone sheet. A fire-retardant coating layer is provided in the middle to prevent excessive heat from causing a fire. The heat is transferred to the heat dissipation resin layer and dissipated through the heat dissipation holes.

[0014] 2. Side panels No. 1 and No. 2 are installed on the upper side of the circuit board body. Filter No. 1 is installed on side panel No. 1, and filter No. 2 is installed on side panel No. 2. Heat dissipation and dust-proof films are installed on the inside, which can effectively dissipate a small part of the heat dissipated upwards and effectively isolate dust from falling into the circuit board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a dustproof circuit board provided in an embodiment of the present application. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of a dustproof circuit board provided in an embodiment of the present application. Figure 2 ;

[0017] Figure 3 is a schematic diagram of the cross-sectional structure of a dustproof circuit board provided in an embodiment of the present application;

[0018] Figure 4 It is a schematic diagram of the explosion structure of a dustproof circuit board provided in an embodiment of the present application.

[0019] In the figure: 1. circuit board body; 2. No. 1 fixing plate; 3. No. 2 fixing plate; 4. No. 1 side plate; 5. No. 2 side plate; 6. top plate; 7. slot plate; 8. bottom plate; 9. nut; 10. heat dissipation resin layer; 11. fire retardant coating layer; 12. thermal conductive silicone sheet; 13. heat dissipation dustproof film; 101. No. 1 screw hole; 102. No. 1 card board; 201. No. 2 screw hole; 202. assembly slot; 301. No. 3 screw hole; 401. No. 1 filter; 402. No. 2 card board; 403. No. 3 card board; 501. No. 2 filter; 601. No. 3 filter; 801. heat dissipation hole. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0021] Example

[0022] See also Figure 1 to Figure 4 In this embodiment, a dustproof circuit board is provided, including a circuit board body 1, a first fixing plate 2, and a second fixing plate 3. The first fixing plate 2 is installed on the lower side of the circuit board body 1, and the second fixing plate 3 is installed on the upper side of the circuit board body 1;

[0023] Specifically, the circuit board body 1 is provided with No. 1 screw holes 101 at four vertex positions, the No. 1 fixing plate 2 is provided with No. 2 screw holes 201 at four vertex positions, and the No. 2 fixing plate 3 is provided with No. 3 screw holes 301 at four vertex positions. The circuit board body 1, the No. 1 fixing plate 2 and the No. 2 fixing plate 3 are fixedly installed by nuts 9;

[0024] A slot plate 7 is installed in the middle of the first fixing plate 2, and a mounting groove 202 is provided in the slot plate 7;

[0025] A heat-conducting silicone sheet 12 is installed on the uppermost layer in the assembly groove 202, a fire-retardant coating layer 11 is installed on the lower side of the heat-conducting silicone sheet 12, and a heat-dissipating resin layer 10 is installed on the lower side of the fire-retardant coating layer 11;

[0026] A bottom plate 8 is installed on the lower side of the heat dissipation resin layer 10, and a plurality of heat dissipation holes 801 of the same size are provided on the bottom plate 8;

[0027] The second side plate 5 is installed on the left and right sides of the middle position of the second fixing plate 3, and the second filter screen 501 is installed on the second side plate 5;

[0028] A No. 1 side plate 4 is installed at both sides of the middle position of the No. 2 fixing plate 3, a No. 1 filter screen 401 is installed on the No. 1 side plate 4, a No. 2 clamping plate 402 is installed on the upper side of the inner wall of the No. 1 side plate 4, and a No. 3 clamping plate 403 is installed on the upper side of the No. 2 clamping plate 402;

[0029] A first card board 102 is installed in the middle of the circuit board body 1, and heat dissipation and dustproof films 13 are installed on the side ends of the first card board 102 and the second card board 402;

[0030] A top plate 6 is installed on the upper sides of the No. 1 side plate 4 and the No. 2 side plate 5 , a No. 3 filter screen 601 is installed on the top plate 6 , and a heat dissipation and dustproof film 13 is installed between the top plate 6 and the No. 3 card plate 403 .

[0031] The working principle of the utility model is:

[0032] When using a dustproof circuit board, most of the heat of the circuit board body 1 is transferred downward through the thermal conductive silicone sheet 12, and a fire-retardant coating layer 11 is provided in the middle to prevent fire caused by excessive heat. The heat is transferred to the heat dissipation resin layer 10 and dissipated through the heat dissipation holes 801. A side panel No. 1 4 and a side panel No. 2 5 are installed on the upper side of the circuit board body 1, a filter No. 1 401 is installed on the side panel No. 1 4, and a filter No. 2 501 is installed on the side panel No. 2 5. Heat dissipation and dust-proof films 13 are installed on the inner sides, which can effectively dissipate a small part of the heat dissipated upward and effectively isolate dust from falling into the circuit board body 1.

[0033] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A dustproof circuit board, characterized in that: The circuit board comprises a circuit board body (1), a first fixing plate (2), and a second fixing plate (3), wherein the first fixing plate (2) is mounted on the lower side of the circuit board body (1), and the second fixing plate (3) is mounted on the upper side of the circuit board body (1).

2. A dustproof circuit board according to claim 1, characterized in that: The circuit board body (1) is provided with No. 1 screw holes (101) at four vertex positions, the No. 1 fixing plate (2) is provided with No. 2 screw holes (201) at four vertex positions, and the No. 2 fixing plate (3) is provided with No. 3 screw holes (301) at four vertex positions. The circuit board body (1), the No. 1 fixing plate (2) and the No. 2 fixing plate (3) are fixedly installed by nuts (9).

3. A dustproof circuit board according to claim 2, characterized in that: A slot plate (7) is installed in the middle of the first fixing plate (2), and a mounting slot (202) is provided in the slot plate (7).

4. The dustproof circuit board according to claim 3, characterized in that: A heat-conducting silicone sheet (12) is installed at the top layer in the assembly groove (202), a fire-retardant coating layer (11) is installed at the bottom of the heat-conducting silicone sheet (12), and a heat-dissipating resin layer (10) is installed at the bottom of the fire-retardant coating layer (11).

5. The dustproof circuit board according to claim 4, characterized in that: A bottom plate (8) is installed on the lower side of the heat dissipation resin layer (10), and a plurality of heat dissipation holes (801) of the same size are provided on the bottom plate (8).

6. The dustproof circuit board according to claim 2, characterized in that: A second side plate (5) is installed on the left and right sides of the middle position of the second fixing plate (3), and a second filter screen (501) is installed on the second side plate (5).

7. The dustproof circuit board according to claim 6, characterized in that: A No. 1 side plate (4) is installed at both sides of the middle position of the No. 2 fixing plate (3), a No. 1 filter screen (401) is installed on the No. 1 side plate (4), a No. 2 clamping plate (402) is installed on the upper side of the inner wall of the No. 1 side plate (4), and a No. 3 clamping plate (403) is installed on the upper side of the No. 2 clamping plate (402).

8. The dustproof circuit board according to claim 2, characterized in that: A first card board (102) is installed in the middle of the circuit board body (1), and heat dissipation and dustproof films (13) are installed on the side ends of the first card board (102) and the second card board (402).

9. The dustproof circuit board according to claim 7, characterized in that: A top plate (6) is installed on the upper sides of the No. 1 side plate (4) and the No. 2 side plate (5), a No. 3 filter screen (601) is installed on the top plate (6), and a heat dissipation and dustproof film (13) is installed between the top plate (6) and the No. 3 card plate (403).

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