Radio frequency signal modulator

Abstract

The utility model relates to the field of modulators, in particular to a radio frequency signal modulator, which comprises a modulator shell and a positioning and fixing assembly, four foot pads are symmetrically arranged at the lower end of the modulator shell, two heat dissipation mounting grooves are symmetrically formed in two sides of the lower end of the modulator shell, heat dissipation assemblies are movably inserted in the two heat dissipation mounting grooves, and the positioning and fixing assembly is arranged in the modulator shell. The heat dissipation assembly comprises a heat dissipation plate and a damping slot, two heat dissipation mounting grooves matched with the heat dissipation assembly are formed in the bottom of the modulator shell, then maintenance windows are formed in the heat dissipation mounting grooves and an inner cavity of the modulator shell, and through the maintenance windows formed in a large area, when electronic elements in the modulator shell need to be overhauled, the electronic elements can be maintained conveniently and rapidly. Under the cooperation of the positioning and fixing assembly, the operation is simpler and more convenient when the heat dissipation plate is opened and closed, the filter cotton arranged in the heat dissipation assembly can filter a large amount of dust in the air circulation in the modulator shell, and the modulator shell is convenient to detach, replace and maintain.

Description

Technical Field

[0001] This utility model relates to the field of modulators, specifically a radio frequency signal modulator. Background Technology

[0002] Radio frequency signal modulator is short for adjacent channel modulator. Its function is to modulate the video and audio signals provided by the signal source (which can be a digital TV set-top box, satellite engineering receiver DVS-398, DVD player, computer, camera, TV demodulator and other AV signal sources) into a stable high-frequency radio frequency oscillation signal. The video is modulated by amplitude modulation and the audio is modulated by frequency modulation.

[0003] The existing patent CN207099211U discloses a multi-carrier modulation device for television communication, including a modulator body. Heat sinks are provided on both sides of the upper surface of the modulator body. A control panel is mounted on the front of the modulator body. The surface of the control panel is provided with a TS input interface, an LCD screen, indicator lights, and operation buttons. This modulator supports single-frequency network mode and multi-frequency network mode, meets high-quality radio frequency modulation specifications, and supports transmission stream packet mode and burst mode. Because the modulator has heat dissipation components on its body to ensure good performance, these components are often in the form of a fan combined with a ventilation window. The ventilation window is an open design, which allows a large amount of dust to enter during later use. Furthermore, in the event of a malfunction, disassembling and repairing the casing of the existing equipment is time-consuming and laborious, making it inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a radio frequency signal modulator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a radio frequency signal modulator, comprising:

[0006] The modulator housing has four symmetrical feet at its lower end and two symmetrical heat dissipation mounting slots on both sides of its lower end. A heat dissipation component is movably inserted into each of the two heat dissipation mounting slots. The heat dissipation component includes a heat dissipation plate and a damping slot.

[0007] The positioning and fixing component is located between two heat dissipation mounting slots of the modulator housing. The positioning and fixing component includes two control knobs, each of which is movably connected to two fixing blocks, and the two fixing blocks are respectively inserted into one side of the two heat dissipation plates.

[0008] Preferably, each of the heat dissipation mounting slots has a maintenance window connected to the inner cavity of the modulator housing, and the cross-sectional area of ​​the maintenance window is smaller than the cross-sectional area of ​​the heat dissipation mounting slot.

[0009] Preferably, each of the two heat dissipation mounting slots has two symmetrically arranged assembly pin holes on opposite sides, and two symmetrically arranged connecting pins on one side of the heat dissipation plate, with the two connecting pins respectively movably inserted into the two assembly pin holes.

[0010] Preferably, a filling groove is provided inside the heat sink on the side away from the connecting pin, and the filter cotton is horizontally inserted into the filling groove.

[0011] Preferably, the modulator housing is horizontally supported by a support beam located between two heat dissipation mounting slots. Two damping slots are symmetrically provided on the support beam, and one side of each of the two control knobs is damped and inserted into the two damping slots.

[0012] Preferably, the control knob has spring telescopic grooves extending through both sides. Two fixed blocks are horizontally movably inserted into the two spring telescopic grooves on one side and are provided with constraint blocks. Each constraint block is provided with a fixed spring on one side. The length of the spring telescopic groove extending out of the control knob is less than the depth of the spring telescopic groove. The damping slot is connected to the two heat dissipation mounting slots and has clearance grooves. The two fixed blocks movably pass through the two clearance grooves and are inserted into the filling grooves of the two heat dissipation plates. The side of the fixed blocks inserted into the filling grooves is an inclined surface.

[0013] Preferably, a suction cup is embedded on one side of the control knob extending from the damping slot, and the height of the suction cup from the modulator housing after being pressed against the table surface is equal to the height of the foot.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Two heat dissipation mounting slots that mate with the heat dissipation assembly are provided at the bottom of the modulator housing. Then, maintenance windows are opened in the heat dissipation mounting slots and the inner cavity of the modulator housing. Through the large maintenance windows, the electronic components inside the modulator housing can be quickly opened for maintenance when they need to be repaired. With the help of the positioning and fixing components, the operation is simpler and more convenient when the heat dissipation plate is opened and closed. The filter cotton installed in the heat dissipation assembly can filter a large amount of dust and dirt through air circulation inside the modulator housing and is easy to replace and maintain. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view showing the connection between the heat sink and the modulator housing of this utility model.

[0018] Figure 3 This is a schematic diagram of the side-cut structure of this utility model;

[0019] Figure 4 This utility model Figure 3 Schematic diagram of part A;

[0020] Figure 5 This is a schematic diagram showing the positional relationship of the clearance groove in this utility model;

[0021] Figure 6 This utility model Figure 5 Schematic diagram of part B.

[0022] In the diagram: 1. Modulator housing; 2. Heat dissipation mounting slot; 3. Heat dissipation plate; 4. Assembly pin hole; 5. Connecting pin; 6. Filling slot; 7. Damping slot; 8. Control knob; 9. Spring telescopic slot; 10. Fixing block; 11. Constraint block; 12. Fixing spring; 13. Leaving slot; 14. Suction cup; 15. Maintenance window; 16. Foot pad; 17. Filter cotton. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see the appendix Figures 1-6 This application provides the following technical solutions.

[0025] Example 1: A radio frequency signal modulator includes a modulator housing 1. Four feet 16 are symmetrically provided at the lower end of the modulator housing 1. Two heat dissipation mounting slots 2 are symmetrically provided on both sides of the lower end of the modulator housing 1. Each heat dissipation mounting slot 2 is connected to the inner cavity of the modulator housing 1 and has a maintenance window 15. The cross-sectional area of ​​the maintenance window 15 is smaller than that of the heat dissipation mounting slot 2. When it is necessary to maintain or repair the electronic components inside the modulator housing 1, the large maintenance window 15 can be used for quick repair operations. The electronic components inside the modulator housing 1 are mounted on the top of the inner cavity by bolts and dissipate heat from below, reducing the possibility of dust entering the heat dissipation mounting slot 2.

[0026] Both heat dissipation mounting slots 2 are equipped with heat dissipation components that can be movably inserted into each other. The heat dissipation components include heat dissipation plates 3 and damping slots 7. Two assembly pin holes 4 are symmetrically provided on opposite sides of the two heat dissipation mounting slots 2. Two connecting pins 5 are symmetrically provided on one side of the heat dissipation plate 3. The two connecting pins 5 are movably inserted into the two assembly pin holes 4 respectively. A filling groove 6 is opened through the heat dissipation plate 3 on the side away from the connecting pins 5. Filter cotton 17 is horizontally inserted into the filling groove 6. When the heat dissipation plate 3 is connected to the heat dissipation mounting slot 2, the heat dissipation plate 3 can block the position of the maintenance window 15. At the same time, the filter cotton 17 can filter dust from the heat dissipation holes opened on the heat dissipation plate 3, further preventing dust from entering the inner cavity of the modulator housing 1. The mating insertion between the filling groove 6 and the filter cotton 17 makes it convenient to replace the filter cotton 17.

[0027] The positioning and fixing component is set to fix the heat sink 3 stably in the heat sink mounting slot 2. The positioning and fixing component is set between the two heat sink mounting slots 2 of the modulator housing 1. The positioning and fixing component includes two control knobs 8. Two fixing blocks 10 are movably inserted into each of the two control knobs 8. The two fixing blocks 10 are respectively inserted into one side of the two heat sinks 3. The modulator housing 1 is horizontally provided with a support beam between the two heat sink mounting slots 2. Two damping slots 7 are symmetrically opened on the support beam. One side of the two control knobs 8 is respectively damped and inserted into the two damping slots 7. The control knobs 8 are damped and rotated through the damping insertion of the damping slots 7 and through the common damping rubber ring. After the control knobs 8 are rotated to a certain angle, they can be damped and positioned by themselves.

[0028] Both sides of the control knob 8 are provided with spring telescopic grooves 9. Two fixed blocks 10 are horizontally inserted into the two spring telescopic grooves 9 on one side and are provided with constraint blocks 11. Each constraint block 11 is provided with a fixed spring 12 on one side. The length of the spring telescopic grooves 9 extending out of the control knob 8 is less than the depth of the spring telescopic grooves 9. The damping slot 7 is connected to the two heat dissipation mounting slots 2 and is provided with clearance slots 13. The two fixed blocks 10 are movably inserted through the two clearance slots 13 and are inserted into the filling slots 6 of the two heat dissipation plates 3. The side of the fixed blocks 10 inserted into the filling slots 6 is inclined. When the heat dissipation plate 3 is inserted into the heat dissipation mounting slot 2 from the flipped state, as the heat dissipation plate 3 descends, the heat dissipation plate 3 contacts the inclined surface above the fixed blocks 10 inserted into the heat dissipation mounting slot 2, pushing the fixed blocks 10 to squeeze the fixed springs 12 to retract until the heat dissipation plate 3 is in a horizontal position. At this time, the fixed blocks 10 are horizontally inserted into the filling slots 6 under the elastic force of the fixed springs 12, positioning the reversible movement of the heat dissipation plate 3. The operation is simple and convenient.

[0029] When the modulator housing 1 needs to be inspected through the maintenance window 15, the control knob 8 with the damping ring is rotated horizontally in the damping slot 7. As the control knob 8 rotates, the fixing block 10 rotates from the heat dissipation mounting slot 2 into the relief slot 13. The heat sink 3 can be flipped open normally, which facilitates the replacement of the damping slot 7 and the electronic components inside the modulator housing 1. When the control knob 8 needs to be disassembled and replaced, first open the heat sink 3, then point the fixing block 10 toward the heat dissipation mounting slot 2, use a pusher or a thin rod to push the fixing block 10 into the spring telescopic slot 9 completely, and then pull out the control knob 8.

[0030] In Example 2, based on Example 1, a suction cup 14 is embedded on one side of the control knob 8 extending from the damping slot 7. After the suction cup 14 is pressed against the table, the height of the distance between it and the modulator housing 1 is equal to the height of the pad 16. When the modulator housing 1 is in a normal position, in order to avoid the shaking of the placement table caused by external impact and the modulator housing 1 falling, the suction cup 14 is adsorbed to the placement table, which can improve the placement safety and stability of the modulator housing 1.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radio frequency signal modulator, characterized in that, include: Modulator housing (1), the lower end of the modulator housing (1) is symmetrically provided with four pads (16), and two heat dissipation mounting slots (2) are symmetrically opened on both sides of the lower end of the modulator housing (1). Heat dissipation components are movably inserted into the two heat dissipation mounting slots (2), and the heat dissipation components include heat dissipation plate (3) and damping slot (7). The positioning and fixing component is located between the two heat dissipation mounting slots (2) of the modulator housing (1). The positioning and fixing component includes two control knobs (8), and two fixing blocks (10) are movably inserted into each of the two control knobs (8). The two fixing blocks (10) are respectively inserted into one side of the two heat dissipation plates (3).

2. The radio frequency signal modulator according to claim 1, characterized in that: The heat dissipation mounting groove (2) is connected to the inner cavity of the modulator housing (1) and has a maintenance window (15), and the cross-sectional area of ​​the maintenance window (15) is smaller than the cross-sectional area of ​​the heat dissipation mounting groove (2).

3. The radio frequency signal modulator according to claim 2, characterized in that: Two assembly pin holes (4) are symmetrically provided on opposite sides of the two heat dissipation mounting slots (2), and two connecting pins (5) are symmetrically provided on one side of the heat dissipation plate (3). The two connecting pins (5) are respectively movably inserted into the two assembly pin holes (4).

4. The radio frequency signal modulator according to claim 3, characterized in that: A filling groove (6) is provided inside the heat sink (3) on the side away from the connecting pin (5), and the filter cotton (17) is horizontally inserted into the filling groove (6).

5. A radio frequency signal modulator according to claim 4, characterized in that: The modulator housing (1) is horizontally supported by a support beam located between two heat dissipation mounting slots (2). Two damping slots (7) are symmetrically opened on the support beam. One side of the two control knobs (8) is respectively damped and inserted into the two damping slots (7).

6. A radio frequency signal modulator according to claim 5, characterized in that: The control knob (8) has spring telescopic grooves (9) extending through both sides. Two fixed blocks (10) are horizontally inserted into the two spring telescopic grooves (9) on one side and are provided with constraint blocks (11). Each constraint block (11) is provided with a fixed spring (12). The length of the spring telescopic groove (9) extending out of the control knob (8) is less than the depth of the spring telescopic groove (9). The damping slot (7) is connected to the two heat dissipation mounting slots (2) and is provided with clearance slots (13). The two fixed blocks (10) are movably inserted through the two clearance slots (13) and inserted into the filling slots (6) of the two heat dissipation plates (3). The side of the fixed blocks (10) inserted into the filling slots (6) is an inclined surface.

7. A radio frequency signal modulator according to claim 6, characterized in that: The control knob (8) extends out of the damping slot (7) and is fitted with a suction cup (14). After the suction cup (14) is pressed against the table, the height of the distance between the suction cup (1) and the modulator housing (1) is equal to the height of the foot (16).

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