A high reliability indicator circuit board that prevents overheating damage

Abstract

The utility model discloses a high-reliability indicator circuit board that prevents overheating damage, which relates to the technical field of circuit boards, and includes a main body, a heat sink is slidably arranged around the main body, and a thermistor is fixedly arranged at the lower end of the heat sink, a bracket is fixedly arranged inside the heat sink, and fans are rotatably arranged on both sides of the bracket, a base is fixedly arranged on one side of the upper end of the main body, and an electrode plate 1 is fixedly arranged on the upper end of the base. Compared with the existing ordinary circuit boards, the high-reliability indicator circuit board that prevents overheating damage, when in use, the temperature of the main body can be absorbed by the heat sink and dissipated to the surroundings, and as the temperature of the main body continues to rise, the resistance of the thermistor decreases, and as the resistance decreases, the fan starts, and the higher the temperature, the faster the fan speed, so that the air passing through the heat sink can be increased, so that heat can be provided for the main body, ensuring that it can have a good working state under normal conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a high-reliability indicator circuit board which is resistant to overheating damage. Background Art

[0002] High-frequency circuit boards are special circuit boards with higher electromagnetic frequencies. Generally speaking, high frequency can be defined as a frequency above 1GHz. Its physical properties, precision, and technical parameters are very high. They are often used in automotive anti-collision systems, satellite systems, radio systems, and other fields.

[0003] As the application number is 201920367478.6, the utility model discloses a high-frequency circuit board, including a circuit board body, a positioning hole, a fixing component and a rubber strip, the surface of the circuit board body is provided with a high-frequency circuit, the positioning holes are symmetrically distributed on both sides of the circuit board body, the surface of the positioning hole is fixedly connected to the welding plate, the notches are symmetrically distributed on both sides of the circuit board body, the interior of the notches is fixedly connected to the fixing component, the fixing component includes a fixing plate, a toothing, a rotating shaft, a pressing plate and a buckle, and the back of the circuit board body is fixedly connected to the rubber strip. This high-frequency circuit board is provided with positioning holes on both sides of the circuit board body and combined with the fixing component, so that the circuit board is more convenient when positioning and fixing. It only needs to position and fit the positioning holes, then use the welding plate for welding connection, then insert the fixing plate into the notch, and press the buckle at the bottom of the pressing plate into the slot to complete the installation of the circuit board. The operation is simple and easy, and the practicability is strong, but the circuit board is not convenient for controlling the temperature when in use, and it is not convenient to provide protection when the temperature is too high.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a high-reliability indicator circuit board that prevents overheating damage is proposed. Utility Model Content

[0005] The utility model aims to provide a high-reliability indicator circuit board which is resistant to overheating damage, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a high-reliability indicator circuit board that prevents overheating damage, including a main body, a heat sink is slidably arranged around the main body, and a thermistor is fixedly arranged at the lower end of the heat sink, a bracket is fixedly arranged inside the heat sink, and fans are rotatably arranged on both sides of the bracket, a base is fixedly arranged on one side of the upper end of the main body, and an electrode plate is fixedly arranged on the upper end of the base.

[0007] Preferably, pads are arranged around the electrode plate 1 through the base, and an electrode plate 2 is arranged above the electrode plate 1, and the base is provided with two upper and lower ones in total. Preferably, the electrode plate 1 is arranged at one end opposite to the base and contacts each other, the pads are fixed to the base by glue, and the lower end of the electrode plate 2 is fixedly connected to the upper end of the base.

[0008] Preferably, the upper end of the second electrode plate is provided with a groove, the thickness of the two ends of the heat dissipation plate is greater than that of the main body and wraps the main body, and through holes are provided inside both ends of the heat dissipation plate.

[0009] Preferably, the bracket is located inside the through hole of the heat sink, and the bracket is located above the thermistor, and a motor is built inside the bracket for driving the fan.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model is provided with a main body, a heat sink, a thermistor, a bracket and a fan. When in use, the temperature of the main body can be absorbed by the heat sink and dissipated to the surroundings. As the temperature of the main body continues to rise, the resistance of the thermistor decreases. As the resistance decreases, the fan starts. The higher the temperature, the faster the fan speed. In this way, more air can pass through the heat sink, so as to provide heat dissipation for the main body and ensure that it can have a good working state under normal working conditions.

[0012] 2. The utility model is provided with a base, electrode plate 1, pad and electrode plate 2. If the temperature of the main body continues to rise after the fan is started, the pad located between the bases will expand due to the heat, so that the electrode plates 1 will move away from each other. In this way, the circuit can be cut off in time under high temperature conditions to avoid damage to the main body due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the heat dissipation plate of the utility model;

[0015] Figure 3 This is a schematic diagram of the bottom structure of the pile bottom of the utility model;

[0016] Figure 4 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 5 For this utility model Figure 2 Enlarged structural diagram at B in the middle.

[0018] In the figure: 1. main body; 2. heat sink; 3. thermistor; 4. bracket; 5. fan; 6. base; 7. electrode plate 1; 8. pad; 9. electrode plate 2. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-Figure 4 As shown, a high-reliability indicator circuit board for preventing overheating damage comprises a main body 1, a heat sink 2 is slidably arranged around the main body 1, and a thermistor 3 is fixedly arranged at the lower end of the heat sink 2, a bracket 4 is fixedly arranged inside the heat sink 2, and fans 5 are rotatably arranged on both sides of the bracket 4, a base 6 is fixedly arranged on one side of the upper end of the main body 1, and an electrode plate 7 is fixedly arranged on the upper end of the base 6. When in use, the temperature of the main body 1 can be absorbed by the heat sink 2 and dissipated to the surroundings, and as the temperature of the main body 1 continues to rise, the resistance of the thermistor 3 becomes smaller, and as the resistance becomes smaller, the fan 5 is started, and the higher the temperature, the faster the speed of the fan 5, so that the air passing through the heat sink 2 can be increased, so that heat can be provided for the main body 1, ensuring that it can have a good working state under normal working conditions;

[0021] Furthermore, the thermistor 3 is a negative temperature coefficient resistor, so that the resistance can be reduced when the temperature increases.

[0022] like Figure 2 and Figure 5 As shown, pads 8 are provided around the electrode plate 1 7 through the base 6, and an electrode plate 2 9 is provided above the electrode plate 1 7. The base 6 is provided with two upper and lower electrodes. The electrode plates 1 7 are provided at the opposite end of the base 6 and contact each other. The pads 8 and the base 6 are fixed by glue. The lower end of the electrode plate 2 9 is fixedly connected to the base 6 at the upper end. The upper end of the electrode plate 2 9 is provided with a groove. The thickness of the two ends of the heat sink 2 is greater than that of the main body 1, and the main body 1 is wrapped. Through holes are provided inside the two ends of the heat sink 2. The bracket 4 is located inside the through hole of the heat sink 2, and the bracket 4 is located above the thermistor 3. A motor is built in the bracket 4 for driving the fan 5. If the temperature of the main body 1 continues to rise after the fan 5 is started, the pads 8 between the bases 6 expand due to the heat, so that the electrode plates 1 7 are moved away from each other. In this way, the circuit can be cut off in time under high temperature conditions to avoid damage to the main body 1 due to excessive temperature.

[0023] Furthermore, the grooves on the electrode plate 2 9 can provide convenience when soldering the wires and prevent the solder from overflowing.

[0024] Furthermore, the cushion block 8 is made of polytetrachloroethylene, which has a large thermal expansion in a high temperature environment, so that the power supply can be cut off in time when the temperature is too high.

[0025] Working principle: When using the high-reliability indicator circuit board that prevents overheating damage, first, when in use, the temperature of the main body 1 can be absorbed by the heat sink 2 and dissipated to the surroundings, and as the temperature of the main body 1 continues to rise, the resistance of the thermistor 3 becomes smaller, and as the resistance becomes smaller, the fan 5 starts, and the higher the temperature, the faster the fan 5 rotates, so that more air passing through the heat sink 2 can be added, so that heat can be provided for the main body 1, ensuring that it can have a good working state under normal working conditions; finally, if the temperature of the main body 1 continues to rise after the fan 5 is started, the pad 8 located between the base 6 expands due to heat, so that the electrode plates 7 are separated from each other, so that the circuit can be cut off in time under high temperature conditions to avoid the main body 1 from being damaged due to excessive temperature. This is the working principle of the high-reliability indicator circuit board that prevents overheating damage.

Claims

1. A high reliability indicator circuit board that is resistant to overheating damage, comprising a main body (1), characterized in that: A heat sink (2) is slidably arranged around the main body (1), and a thermistor (3) is fixedly arranged at the lower end of the heat sink (2); a bracket (4) is fixedly arranged inside the heat sink (2), and fans (5) are rotatably arranged on both sides of the bracket (4); a base (6) is fixedly arranged on one side of the upper end of the main body (1), and an electrode plate (7) is fixedly arranged at the upper end of the base (6).

2. A high reliability indicator circuit board that prevents overheating damage according to claim 1, characterized in that: Pads (8) are arranged around the electrode plate 1 (7) through the base (6), and an electrode plate 2 (9) is arranged above the electrode plate 1 (7). The base (6) is provided with two upper and lower ones in total.

3. A high reliability indicator circuit board for preventing overheating damage according to claim 2, characterized in that: The electrode plate 1 (7) is arranged at an end opposite to the base (6) and contacts each other, the cushion block (8) is fixed to the base (6) by glue, and the lower end of the electrode plate 2 (9) is fixedly connected to the upper end of the base (6).

4. A high reliability indicator circuit board for preventing overheating damage according to claim 3, characterized in that: The upper end of the electrode plate 2 (9) is provided with a groove, the thickness of the two ends of the heat dissipation plate (2) is greater than that of the main body (1), and the main body (1) is wrapped, and through holes are provided inside the two ends of the heat dissipation plate (2).

5. A high reliability indicator circuit board for preventing overheating damage according to claim 4, characterized in that: The bracket (4) is located inside the through hole of the heat sink (2), and the bracket (4) is located above the thermistor (3). A motor is built into the bracket (4) for driving the fan (5).

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