Optical transmitter of optical fiber television

Abstract

The utility model discloses an optical fiber television optical transmitter, which relates to the technical field of optical transmitters and comprises a casing, fixing rods are mounted at positions, close to four corners, of the lower end face in the casing, an optical transmitting circuit board is arranged between the upper ends of the fixing rods, and two mounting ports are formed in the upper end face of the casing. A first cooling fan is arranged in the mounting opening in one side, a second cooling fan is arranged in the mounting opening in the other side, and an exhaust assembly used for exhausting air is further arranged on the lower end face of the machine shell. Air entering the machine shell can be filtered through the arranged filter screen, then dust is prevented from entering the machine shell, meanwhile, the magnetic attraction frame and the iron frame are fixed in a magnetic attraction mode, and disassembly and cleaning can be conveniently carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of optical transmitters, in particular to an optical fiber television optical transmitter. Background Art

[0002] The function of the optical transmitter is to convert the HDB3 signal code sent from the multiplexing device into NRZ code; then encode the NRZ code into a code type suitable for transmission on the optical cable line; finally, perform electrical / optical conversion, convert the electrical signal into an optical signal and couple it into the optical fiber.

[0003] Prior art CN 207926598 U proposes a C-bandwidth optical transmitter device, including an optical transmitter body, both sides of the bottom of the optical transmitter body are fixedly connected to bases, and the center of the bottom of the optical transmitter body is fixedly connected to a shell. The device can achieve cooling of the optical transmitter through the cooperation of various components.

[0004] However, although the existing optical transmitter cooling components can automatically turn on or off according to the transmitter temperature, they need to be equipped with temperature detection electrical components during use, which undoubtedly increases the power consumption of the transmitter. At the same time, the heat dissipation rate cannot be adjusted accordingly according to the heat generated by the optical transmitter during use. In response to the above problems, we provide a fiber optic TV optical transmitter to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a fiber optic television optical transmitter to solve the problems in the prior art that the power consumption of the optical transmitter will be increased and the heat dissipation rate cannot be adjusted according to the heat generation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An optical fiber television transmitter comprises a casing, wherein fixing rods are installed at positions near four corners of the lower end surface of the casing, and an optical transmitting circuit board is arranged between the upper ends of the fixing rods. The upper end surface of the casing is provided with two mounting openings, a first cooling fan is arranged in the mounting opening on one side, and a second cooling fan is arranged in the mounting opening on the other side. The lower end surface of the casing is also provided with an exhaust assembly for exhausting air;

[0008] The lower end of the light emitting circuit board is provided with a control component for controlling the first cooling fan and the second cooling fan to start or shut down;

[0009] The upper end of the casing is also provided with a dustproof component for preventing dust from blowing into the casing.

[0010] As a further solution of the utility model: the control component includes a bracket, and the two brackets are respectively fixedly connected to a position near the middle of the lower end surface inside the casing, a first travel switch is installed on the bracket on one side, and a second travel switch is provided on the bracket on the other side, the first travel switch is electrically connected to the first cooling fan, and the second travel switch is electrically connected to the second cooling fan, and a trigger component for triggering the first travel switch and the second travel switch is provided at the lower end of the light emitting circuit board.

[0011] As a further solution of the utility model: the trigger component includes a heat-conducting block, which is fixedly connected to a position on one side of the lower end surface of the light-emitting circuit board, a sliding cavity is opened inside the heat-conducting block, a piston block is slidably connected inside the sliding cavity, a push rod slidably connected to the heat-conducting block is fixedly connected to one end surface of the piston block, a reset spring is passed through the position of the push rod in the sliding cavity, the cavity of the sliding cavity away from the reset spring is filled with alcohol, and a side of the heat-conducting block away from the alcohol is opened with an exhaust hole connected to the sliding cavity.

[0012] As a further solution of the utility model: at least three sealing rings are fixedly connected to the surface of the piston block.

[0013] As a further solution of the utility model: the dustproof component includes an iron frame, the iron frame is fixedly connected to the upper end surface of the casing, the installation openings are all located inside the iron frame, the iron frame is magnetically connected to a magnetic frame, and a filter is provided in the magnetic frame.

[0014] As a further solution of the utility model: both sides of the lower end surface of the casing are fixedly connected with mounting seats for mounting the casing, and both sides of the mounting seats are provided with mounting holes.

[0015] As a further solution of the utility model: the exhaust assembly includes exhaust ports, and the exhaust ports are opened at both sides of the lower end surface of the casing, and circular filters are provided in the exhaust ports.

[0016] As a further solution of the utility model: the side of the heat conductive block in contact with the light emitting circuit board is coated with an insulating coating.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model can push the push rod to move according to the temperature through the alcohol set. When the temperature is higher, the piston block will be pushed to move a greater distance. When the push rod touches the first stroke switch, the first cooling fan will start to work to dissipate heat. When the heat generation is too large, the push rod will continue to be pushed out and then touch the second stroke switch. When the second stroke switch is touched, the second cooling fan will start, thereby increasing the heat dissipation rate. During the working process, the number of fans will be automatically adjusted according to the heat generation, which is more energy-saving. At the same time, no electrical components are needed when sensing the temperature, which further reduces the power consumption of the transmitter.

[0019] 2. The utility model can filter the air entering the casing through the filter screen, thereby preventing dust from entering the casing. At the same time, the magnetic frame and the iron frame are fixed by magnetic attraction, which can be easily disassembled and cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the structure when the filter screen in the utility model is removed.

[0022] Figure 3 It is a schematic diagram of the bottom structure of the utility model.

[0023] Figure 4 It is a schematic diagram of the internal structure of the casing in the utility model.

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the heat conducting block in the utility model.

[0025] Among them: 1. Casing; 2. Magnetic frame; 3. Filter; 4. Iron frame; 5. First cooling fan; 6. Exhaust hole; 7. Mounting seat; 8. Mounting port; 9. Second cooling fan; 10. Fixing rod; 11. Light emitting circuit board; 12. Round filter; 13. Exhaust port; 14. Second travel switch; 15. First travel switch; 16. Bracket; 17. Push rod; 18. Heat conducting block; 19. Sliding chamber; 20. Alcohol; 21. Piston block; 22. Sealing ring; 23. Reset spring. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] See also Figure 1-Figure 5 In an embodiment of the utility model, a fiber optic television optical transmitter includes a casing 1, wherein fixing rods 10 are installed at positions near the four corners of the lower end surface of the casing 1, and an optical emitting circuit board 11 is arranged between the upper ends of the fixing rods 10. Two mounting openings 8 are provided on the upper end surface of the casing 1, and a first cooling fan 5 is arranged in the mounting opening 8 on one side, and a second cooling fan 9 is arranged in the mounting opening 8 on the other side. An exhaust assembly for exhausting air is also provided on the lower end surface of the casing 1; the exhaust assembly can cooperate with the first cooling fan 5 and the second cooling fan 9 to form a circulation channel for air in the casing 1, thereby facilitating heat dissipation; the optical emitting circuit board 11 is composed of an input interface, a light source, a driving circuit, a monitoring circuit, a control circuit, and the like.

[0029] A control component for controlling the start or shut down of the first cooling fan 5 and the second cooling fan 9 is provided at the lower end of the light emitting circuit board 11; the control component includes a bracket 16, and the two brackets 16 are respectively fixedly connected to a position near the middle of the lower end surface inside the casing 1. A first travel switch 15 is installed on the bracket 16 on one side, and a second travel switch 14 is provided on the bracket 16 on the other side. The first travel switch 15 is electrically connected to the first cooling fan 5, and the second travel switch 14 is electrically connected to the second cooling fan 9. A trigger component for triggering the first travel switch 15 and the second travel switch 14 is provided at the lower end of the light emitting circuit board 11.

[0030] During operation, the trigger component will operate according to the heat generated by the light emitting circuit board 11, and then touch the first travel switch 15 and the second travel switch 14. When the first travel switch 15 is touched, the first cooling fan 5 starts, and when the second travel switch 14 is touched, the second cooling fan 9 starts.

[0031] The trigger assembly includes a heat-conducting block 18, which is fixedly connected to a position on one side of the lower end surface of the light-emitting circuit board 11, a sliding cavity 19 is provided inside the heat-conducting block 18, a piston block 21 is slidably connected inside the sliding cavity 19, a push rod 17 slidably connected to the heat-conducting block 18 is fixedly connected to one end surface of the piston block 21, a reset spring 23 is penetrated through the push rod 17 located in the sliding cavity 19, the cavity of the sliding cavity 19 away from the reset spring 23 is filled with alcohol 20, and a vent 6 connected to the sliding cavity 19 is provided on the side of the heat-conducting block 18 away from the alcohol 20; at least three sealing rings 22 are fixedly connected to the surface of the piston block 21; and an insulating coating is applied to the side of the heat-conducting block 18 in contact with the light-emitting circuit board 11. The three sealing rings 22 can ensure the sealing of the alcohol 20.

[0032] When the temperature of the light emitting circuit board 11 rises, the alcohol 20 will push the push rod 17 to move. When the push rod 17 touches the first travel switch 15, the first cooling fan 5 will start to work to dissipate heat. When the heat generation is too large, the push rod 17 will continue to be pushed out and then touch the second travel switch 14. When the second travel switch 14 is touched, the second cooling fan 9 will start, thereby increasing the heat dissipation rate, so that during the operation, the number of fans will be automatically adjusted according to the heat generation.

[0033] The upper end of the casing 1 is also provided with a dustproof component for preventing dust from blowing into the casing 1. The dustproof component includes an iron frame 4, which is fixedly connected to the upper end surface of the casing 1. The mounting openings 8 are all located inside the iron frame 4. A magnetic frame 2 is magnetically connected to the iron frame 4, and a filter 3 is provided inside the magnetic frame 2.

[0034] The filter 3 provided can filter the air entering the casing 1, thereby preventing dust from entering the casing 1. Meanwhile, the magnetic frame 2 and the iron frame 4 are fixed by magnetic attraction, thereby facilitating disassembly and cleaning.

[0035] Both sides of the lower end surface of the casing 1 are fixedly connected with mounting seats 7 for mounting the casing 1, and both sides of the mounting seats 7 are provided with mounting holes; the provided mounting seats 7 and mounting holes facilitate the installation and fixation of the casing 1.

[0036] Example 2

[0037] The difference from Example 1 is that the exhaust component includes an exhaust port 13, and the exhaust port 13 is opened on both sides of the lower end surface of the casing 1. A circular filter 12 is provided in the exhaust port 13. The opened exhaust port 13 can be used for exhaust, and the set circular filter 12 can block dust and prevent external dust from entering the interior of the casing 1.

[0038] The working principle of the utility model is: when in use, when the light emitting circuit board 11 generates heat during operation, the circular filter screen 12 and the mounting port 8 provided can be used for ventilation and heat dissipation with the outside world, when the ventilation of the circular filter screen 12 and the mounting port 8 is not enough to cool down the light emitting circuit board 11, the expansion of the alcohol 20 will push the push rod 17 to move, and when the push rod 17 touches the first stroke switch 15, the first cooling fan 5 will start to work for heat dissipation, when the heat generation is too large, the push rod 17 will continue to be pushed out, and then touch the second stroke switch 14, and when the second stroke switch 14 is touched, the second cooling fan 9 will start, thereby increasing the heat dissipation rate, so that during the working process, the number of fans will be automatically allocated according to the heat generation, so that the working process is more energy-saving, when the temperature drops, the volume of the alcohol 20 will gradually decrease, the push rod 17 and the piston block 21 will gradually reset under the action of the reset spring 23, the push rod 17 and the second stroke switch 14 and the first stroke switch 15 are separated successively, and after separation, the second stroke switch 14 and the first stroke switch 15 contacts are reset to automatically turn off the first cooling fan 5 and the second cooling fan 9.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although the present specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An optical fiber television transmitter, comprising a housing (1), wherein fixing rods (10) are installed at positions near four corners of the lower end surface of the housing (1), and an optical transmission circuit board (11) is provided between the upper ends of the fixing rods (10), characterized in that: The upper end surface of the housing (1) is provided with two mounting openings (8), a first cooling fan (5) is arranged in the mounting opening (8) on one side, and a second cooling fan (9) is arranged in the mounting opening (8) on the other side, and an exhaust assembly for exhausting air is also arranged on the lower end surface of the housing (1); A control component for controlling the start or shut down of the first cooling fan (5) and the second cooling fan (9) is provided at the lower end of the light emitting circuit board (11); The upper end of the casing (1) is also provided with a dustproof component for preventing dust from blowing into the casing (1).

2. The optical fiber television transmitter according to claim 1, characterized in that: The control component comprises a bracket (16), wherein the two brackets (16) are respectively fixedly connected to a position close to the middle of the lower end surface of the casing (1), a first travel switch (15) is installed on the bracket (16) on one side, and a second travel switch (14) is installed on the bracket (16) on the other side. The first travel switch (15) is electrically connected to the first cooling fan (5), and the second travel switch (14) is electrically connected to the second cooling fan (9). A trigger component for triggering the first travel switch (15) and the second travel switch (14) is provided at the lower end of the light emitting circuit board (11).

3. The optical fiber television transmitter according to claim 2, characterized in that: The trigger assembly comprises a heat conducting block (18), the heat conducting block (18) being fixedly connected to a position on one side of the lower end surface of the light emitting circuit board (11), a sliding cavity (19) being provided inside the heat conducting block (18), a piston block (21) being slidably connected inside the sliding cavity (19), a push rod (17) being fixedly connected to one end surface of the piston block (21) being slidably connected to the heat conducting block (18), a reset spring (23) being inserted through a position of the push rod (17) located inside the sliding cavity (19), alcohol (20) being filled in the cavity of the sliding cavity (19) away from the reset spring (23), and an exhaust hole (6) communicating with the sliding cavity (19) being provided on a side of the heat conducting block (18) away from the alcohol (20).

4. The optical fiber television transmitter according to claim 3, characterized in that: At least three sealing rings (22) are fixedly connected to the surface of the piston block (21).

5. The optical fiber television transmitter according to claim 1, characterized in that: The dustproof component comprises an iron frame (4), the iron frame (4) is fixedly connected to the upper end surface of the casing (1), the mounting openings (8) are all located inside the iron frame (4), the iron frame (4) is magnetically connected to a magnetic frame (2), and a filter screen (3) is provided inside the magnetic frame (2).

6. The optical fiber television transmitter according to claim 1, characterized in that: Mounting seats (7) for mounting the casing (1) are fixedly connected to both sides of the lower end surface of the casing (1), and mounting holes are provided on both sides of the mounting seat (7).

7. The optical fiber television transmitter according to claim 1, characterized in that: The exhaust assembly comprises an exhaust port (13), wherein the exhaust port (13) is provided at positions on both sides of the lower end surface of the casing (1), and a circular filter screen (12) is provided in each of the exhaust ports (13).

8. The optical fiber television transmitter according to claim 3, characterized in that: The side of the heat conducting block (18) in contact with the light emitting circuit board (11) is coated with an insulating coating.

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