Double-frequency low-noise amplifier convenient for heat dissipation

Abstract

The utility model relates to the technical field of low-noise amplifiers, and discloses a double-frequency low-noise amplifier convenient for heat dissipation, which comprises a low-noise amplifier body, four connecting blocks are fixedly connected to the outer surface of the low-noise amplifier body, fixing rods are fixedly connected to the surfaces of the two sides of each connecting block, and the fixing rods are fixedly connected to the outer surface of the low-noise amplifier body. The driving assembly is operated to drive the four sliding rods to slide in the four fixing rods correspondingly, finally, the silica gel heat conduction pad makes contact with the low-noise amplifier body, and then heat generated by the low-noise amplifier body is conducted through the silica gel heat conduction pad; the problem that some existing double-frequency low-noise amplifiers are low in heat dissipation efficiency is solved, workers can conveniently use the low-noise amplifier according to actual practicability, when effective heat dissipation efficiency cannot be obtained through natural wind, a silica gel heat conduction pad conducts heat generated by a low-noise amplifier body through a driving assembly, and the heat dissipation efficiency of the low-noise amplifier is improved. Therefore, the heat dissipation efficiency and effect of the low-noise amplifier body are improved as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of low-noise amplifiers, in particular to a dual-frequency low-noise amplifier which is convenient for heat dissipation. Background Art

[0002] Low noise amplifier, an amplifier with a very low noise figure, is generally used as a high-frequency or intermediate-frequency preamplifier for various types of radio receivers, as well as an amplifier circuit for highly sensitive electronic detection equipment.

[0003] Some existing dual-band low noise amplifiers have more electronic components inside, so they will emit more heat after long-term use. The existing heat dissipation methods are usually natural wind heat dissipation or heat dissipation by setting heat dissipation fins. However, in actual use, the heat dissipation efficiency and effect are poor. If the air circulation is poor, it will greatly affect the heat dissipation efficiency of the dual-band low noise amplifier, and then affect the normal use of the dual-band low noise amplifier, and the practicality is low. In view of this, we propose a dual-band low noise amplifier that is easy to dissipate heat to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a dual-frequency low-noise amplifier that is easy to dissipate heat, thereby solving the problem of low heat dissipation efficiency of some existing dual-frequency low-noise amplifiers.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-band low-noise amplifier that is easy to dissipate heat, comprising a low-noise amplifier body, the outer surface of the low-noise amplifier body is fixedly connected with four connecting blocks, both side surfaces of the connecting blocks are fixedly connected with fixed rods, the interior of the fixed rods is slidably connected with sliding rods, the upper surface of the sliding rods is fixedly connected with a damper, the upper surface of the damper is fixedly connected with a heat sink, a spring is fixedly connected between the heat sink and the sliding rod, the spring is sleeved on the outer surface of the damper, the side surfaces of the two heat sinks facing the low-noise amplifier body are both provided with silicone thermal pads, a cavity is opened inside the left rear connecting block, and a driving component is arranged inside the cavity.

[0008] Preferably, the driving assembly includes a bidirectional threaded rod, which is rotatably connected inside the cavity, and both ends of the bidirectional threaded rod are rotated to penetrate into the interior of the fixed rod, and two sliding rods are respectively threadedly mounted on two opposite threads of the bidirectional threaded rod.

[0009] Preferably, the outer surface of the bidirectional threaded rod is sleeved with a first bevel gear, the outer surface of the first bevel gear is meshingly connected with a second bevel gear, the interior of the second bevel gear is sleeved with a driving rod, and the driving rod rotates to pass through the connecting block.

[0010] Preferably, ventilation grooves are provided on the surfaces of the two opposite sides of the two heat sinks, and the silicone thermal pads are arranged inside the ventilation grooves. Ventilation holes are provided on the front and rear surfaces of the heat sinks, and the ventilation holes and the ventilation grooves are connected.

[0011] Preferably, the two vents in the middle of the rear side are each provided with a cooling fan, and the cooling fan is fixedly installed inside the vents through an external frame.

[0012] Preferably, a first rotating shaft is fixedly connected to the surface of the heat dissipation fan, a driving motor is fixedly connected to the rear surface of the heat dissipation plate, and an output shaft of the driving motor rotates and penetrates into the interior of the heat dissipation plate.

[0013] Preferably, the output shaft of the driving motor is fixedly connected to the second rotating shaft, the outer surface of the second rotating shaft is sleeved with two first pulleys, the outer surfaces of the two first rotating shafts are sleeved with second pulleys, and the outer surface transmission sleeves of the first pulleys and the second pulleys are provided with belts.

[0014] Preferably, heat dissipation fins are provided on the surface of the low noise amplifier body.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a dual-frequency low-noise amplifier that is easy to dissipate heat and has the following beneficial effects:

[0017] 1. The dual-band low-noise amplifier that is easy to dissipate heat, by operating the driving component to drive the four sliding rods to slide inside the four fixed rods respectively, finally realizes the contact between the silicone thermal pad and the low-noise amplifier body, and then conducts the heat generated by the low-noise amplifier body through the silicone thermal pad, solves the problem of low heat dissipation efficiency of some existing dual-band low-noise amplifiers, and is convenient for staff to use according to actual practicality. When effective heat dissipation efficiency cannot be obtained through natural wind, the silicone thermal pad is used to conduct the heat generated by the low-noise amplifier body through the driving component, thereby improving the heat dissipation efficiency and effect of the low-noise amplifier body as much as possible, ensuring the normal use of the low-noise amplifier body, and having good practicality and heat dissipation effect, and simple operation.

[0018] 2. The dual-band low-noise amplifier that is easy to dissipate heat has a damper and a spring arranged so that when the low-noise amplifier body falls, the heat sink will first contact the ground, and then the device will be buffered by the damper and the spring, thereby avoiding damage to the electronic components inside the low-noise amplifier body as much as possible and ensuring the safety of the device.

[0019] 3. The dual-frequency low-noise amplifier that is easy to dissipate heat, by starting the driving motor, finally discharges the heat generated by the silicone thermal pad through the vents, further improving the thermal conductivity of the silicone thermal pad, thereby improving the heat dissipation efficiency of the low-noise amplifier body, and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a dual-frequency low-noise amplifier that is easy to dissipate heat in the utility model;

[0021] Figure 2 This is a rear view of a dual-frequency low-noise amplifier that is easy to dissipate heat according to the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the low noise amplifier body of the utility model;

[0023] Figure 4 It is a cross-sectional schematic diagram of the connection block of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the heat dissipation plate of the utility model;

[0025] Figure 6 It is a cross-sectional schematic diagram of the heat dissipation plate of the utility model;

[0026] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0027] In the figure: 1. low noise amplifier body; 2. connecting block; 3. fixing rod; 4. sliding rod; 5. damper; 6. spring; 7. heat sink; 8. silicone thermal pad; 9. cavity; 10. bidirectional threaded rod; 11. first bevel gear; 12. second bevel gear; 13. driving rod; 14. ventilation groove; 15. ventilation port; 16. first rotating shaft; 17. driving motor; 18. second rotating shaft; 19. first pulley; 20. second pulley; 21. belt; 22. heat sink fin; 23. cooling fan. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-Figure 7 The utility model provides a technical solution: a dual-frequency low-noise amplifier that is easy to dissipate heat, comprising a low-noise amplifier body 1, four connecting blocks 2 are fixedly connected to the outer surface of the low-noise amplifier body 1, both side surfaces of the connecting blocks 2 are fixedly connected to fixed rods 3, the interior of the fixed rods 3 is slidably connected to sliding rods 4, the upper surface of the sliding rods 4 is fixedly connected to a damper 5, the upper surface of the damper 5 is fixedly connected to a heat sink 7, a spring 6 is fixedly connected between the heat sink 7 and the sliding rod 4, the spring 6 is sleeved on the outer surface of the damper 5, and the side surfaces of the two heat sinks 7 facing the low-noise amplifier body 1 are both provided with a silicone thermal pad 8, a cavity 9 is opened inside the left rear side connecting block 2, and a driving component is arranged inside the cavity 9. When the staff needs to further improve the heat dissipation efficiency of the low-noise amplifier body 1, the four sliding rods 4 are driven by operating the driving component to drive them to dissipate heat. Slide inside the four fixed rods 3, and the movement of the sliding rod 4 drives the movement of the damper 5, and the movement of the damper 5 drives the movement of the heat sink 7, and the movement of the heat sink 7 drives the movement of the silicone thermal pad 8, so as to finally achieve contact between the silicone thermal pad 8 and the low noise amplifier body 1, and then conduct the heat generated by the low noise amplifier body 1 through the silicone thermal pad 8. The above structure solves the problem of low heat dissipation efficiency of some existing dual-band low noise amplifiers, which is convenient for staff to use according to actual practicality. When effective heat dissipation efficiency cannot be obtained through natural wind, the silicone thermal pad 8 is driven by the driving component to conduct the heat generated by the low noise amplifier body 1, thereby improving the heat dissipation efficiency and effect of the low noise amplifier body 1 as much as possible, ensuring the normal use of the low noise amplifier body 1, and having good practicality and heat dissipation effect and simple operation.

[0030] By setting the damper 5 and the spring 6, when the low noise amplifier body 1 falls, the heat sink 7 will first contact the ground, and then the device will be buffered by the damper 5 and the spring 6, thereby avoiding damage to the internal electronic components of the low noise amplifier body 1 as much as possible and ensuring the safety of the device.

[0031] Furthermore, the driving assembly includes a bidirectional threaded rod 10, which is rotatably connected to the inside of the cavity 9, and both ends of the bidirectional threaded rod 10 are rotated to pass through the inside of the fixed rod 3, and the two sliding rods 4 are respectively threadedly sleeved on the two opposite threads of the bidirectional threaded rod 10, and the outer surface of the bidirectional threaded rod 10 is sleeved with a first bevel gear 11, and the outer surface of the first bevel gear 11 is meshingly connected with a second bevel gear 12, and the interior of the second bevel gear 12 is sleeved with a driving rod 13, and the driving rod 13 is rotated to pass through the connecting block 2, and the second bevel gear 12 is driven to rotate by rotating the driving rod 13, and the first bevel gear 11 is driven to rotate by the rotation of the second bevel gear 12, and the bidirectional threaded rod 10 is driven to rotate by the rotation of the first bevel gear 11, and the two sliding rods 4 are respectively driven to slide inside the two fixed rods 3 by the rotation of the bidirectional threaded rod 10, thereby finally realizing the movement of the heat sink 7.

[0032] Furthermore, ventilation grooves 14 are provided on the surfaces of the opposite sides of the two heat sinks 7, and the silicone thermal pads 8 are arranged inside the ventilation grooves 14. Ventilation holes 15 are provided on the front and rear side surfaces of the heat sink 7, and the vents 15 are connected to the ventilation grooves 14. Cooling fans 23 are provided inside the two middle vents 15 on the rear side, and the cooling fans 23 are fixedly installed inside the vents 15 through an external frame. The surface of the cooling fans 23 is fixedly connected to a first rotating shaft 16, and the rear surface of the heat sink 7 is fixedly connected to a driving motor 17, and the output shaft of the driving motor 17 rotates and penetrates into the interior of the heat sink 7. The output shaft of the driving motor 17 is fixedly connected to a second rotating shaft 18, and the outer surface of the second rotating shaft 18 is sleeved with two first pulleys 19, and the outer surfaces of the two first rotating shafts 16 are sleeved A second pulley 20 is provided, and a belt 21 is provided on the outer surface transmission sleeve of the first pulley 19 and the second pulley 20. By starting the driving motor 17, the rotation of the output shaft of the driving motor 17 will drive the rotation of the second rotating shaft 18, and the rotation of the second rotating shaft 18 will drive the rotation of the two first pulleys 19. At this time, the two second pulleys 20 will be driven to rotate under the transmission of the belt 21. The rotation of the two second pulleys 20 will respectively drive the rotation of the two first rotating shafts 16, and the rotation of the first rotating shaft 16 will drive the rotation of the cooling fan 23, and finally the heat generated by the silicone thermal pad 8 is discharged through the vent 15. The thermal conductivity of the silicone thermal pad 8 is further improved through the above structure, thereby improving the heat dissipation efficiency of the low-noise amplifier body 1, and the practicality is high.

[0033] Furthermore, the surface of the low noise amplifier body 1 is provided with heat dissipation fins 22 , and the heat dissipation efficiency and effect of the low noise amplifier body 1 are improved through the cooperation of the heat dissipation fins 22 and the silicone thermal pad 8 .

[0034] Working principle:

[0035] When the dual-band low-noise amplifier that is easy to dissipate heat is in use, the four sliding rods 4 are driven to slide inside the four fixed rods 3 respectively by operating the driving assembly, the movement of the sliding rods 4 drives the movement of the damper 5, the movement of the damper 5 drives the movement of the heat sink 7, and the movement of the heat sink 7 drives the movement of the silicone thermal pad 8, and finally the silicone thermal pad 8 is brought into contact with the low-noise amplifier body 1, and the heat generated by the low-noise amplifier body 1 is conducted through the silicone thermal pad 8.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-frequency low-noise amplifier that is easy to dissipate heat, comprising a low-noise amplifier body (1), characterized in that: Four connecting blocks (2) are fixedly connected to the outer surface of the low-noise amplifier body (1), and both side surfaces of the connecting blocks (2) are fixedly connected to fixing rods (3), and the interior of the fixing rods (3) is slidably connected to a sliding rod (4), and the upper surface of the sliding rod (4) is fixedly connected to a damper (5), and the upper surface of the damper (5) is fixedly connected to a heat sink (7), and a spring (6) is fixedly connected between the heat sink (7) and the sliding rod (4), and the spring (6) is sleeved on the outer surface of the damper (5), and the surfaces of the two heat sinks (7) facing the low-noise amplifier body (1) are both provided with a silicone thermal pad (8), and a cavity (9) is opened inside the left rear connecting block (2), and a driving component is arranged inside the cavity (9).

2. A dual-frequency low noise amplifier for heat dissipation according to claim 1, characterized in that: The driving assembly comprises a bidirectional threaded rod (10), the bidirectional threaded rod (10) is rotatably connected inside the cavity (9), both ends of the bidirectional threaded rod (10) are rotatably inserted into the interior of the fixed rod (3), and two sliding rods (4) are respectively threadedly sleeved on two opposite threads of the bidirectional threaded rod (10).

3. A dual-frequency low noise amplifier for heat dissipation according to claim 2, characterized in that: The outer surface of the bidirectional threaded rod (10) is sleeved with a first bevel gear (11), the outer surface of the first bevel gear (11) is meshingly connected with a second bevel gear (12), the interior of the second bevel gear (12) is sleeved with a driving rod (13), and the driving rod (13) rotates to pass through the connecting block (2).

4. The dual-frequency low noise amplifier for heat dissipation according to claim 1, characterized in that: The surfaces of the two heat sinks (7) on one side opposite to each other are each provided with a ventilation groove (14), a silicone thermal pad (8) is arranged inside the ventilation groove (14), and the surfaces of the front and rear sides of the heat sink (7) are each provided with a ventilation opening (15), and the ventilation opening (15) and the ventilation groove (14) are connected.

5. A dual-frequency low noise amplifier for heat dissipation according to claim 4, characterized in that: The two ventilation openings (15) in the middle of the rear side are both provided with cooling fans (23), and the cooling fans (23) are fixedly installed inside the ventilation openings (15) through an external frame.

6. A dual-frequency low noise amplifier for heat dissipation according to claim 5, characterized in that: The surface of the heat dissipation fan (23) is fixedly connected to a first rotating shaft (16), the rear surface of the heat dissipation plate (7) is fixedly connected to a driving motor (17), and the output shaft of the driving motor (17) rotates and penetrates into the interior of the heat dissipation plate (7).

7. A dual-frequency low noise amplifier for heat dissipation according to claim 6, characterized in that: The output shaft of the driving motor (17) is fixedly connected to a second rotating shaft (18), the outer surface of the second rotating shaft (18) is sleeved with two first belt pulleys (19), the outer surfaces of the two first rotating shafts (16) are sleeved with second belt pulleys (20), and the outer surface transmission sleeves of the first belt pulleys (19) and the second belt pulleys (20) are provided with belts (21).

8. The dual-frequency low noise amplifier for heat dissipation according to claim 1, characterized in that: The surface of the low noise amplifier body (1) is provided with heat dissipation fins (22).

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