CN222547356U - A bus station screen power supply control system and communication mainboard - Google Patents
A bus station screen power supply control system and communication mainboard Download PDFInfo
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- CN222547356U CN222547356U CN202420667185.0U CN202420667185U CN222547356U CN 222547356 U CN222547356 U CN 222547356U CN 202420667185 U CN202420667185 U CN 202420667185U CN 222547356 U CN222547356 U CN 222547356U
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- 238000004891 communication Methods 0.000 title claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 114
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 13
- 229910001416 lithium ion Inorganic materials 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 229920001821 foam rubber Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本实用新型涉及公交站接屏技术领域，具体是一种公交站接屏电源控制系统与通讯主板，包括有RS232电路、RS485电路和LED电路，所述RS232电路、RS485电路和LED电路相互并联，并电性连接DC5V电源电路，且所述DC5V电源电路通过24V电源电路电性连接外部电源P3，同时所述RS232电路电性连接端口P2，所述RS485电路电性连接端口P1。本实用新型的公交站接屏电源控制系统通过DC5V电源电路和24V电源电路将外部电源进行转换，并为后续各功能模块进行供电，从而通过提供稳定的电源电压，减少运行过程中出现不稳定或者短路的情况，进而可以避免原复杂的连接元件由于不利于控制电路，而造成大多数元件发生损坏的情况。
The utility model relates to the technical field of bus station screen connection, specifically a bus station screen connection power supply control system and a communication mainboard, including an RS232 circuit, an RS485 circuit and an LED circuit, wherein the RS232 circuit, the RS485 circuit and the LED circuit are connected in parallel with each other and electrically connected to a DC5V power supply circuit, and the DC5V power supply circuit is electrically connected to an external power supply P3 through a 24V power supply circuit, while the RS232 circuit is electrically connected to port P2, and the RS485 circuit is electrically connected to port P1. The bus station screen connection power supply control system of the utility model converts the external power supply through a DC5V power supply circuit and a 24V power supply circuit, and supplies power to subsequent functional modules, thereby reducing the instability or short circuit during operation by providing a stable power supply voltage, thereby avoiding the situation where the original complex connection elements are not conducive to the control circuit, causing most of the components to be damaged.
Description
Technical Field
The utility model relates to the technical field of bus station screen connection, in particular to a bus station screen connection power supply control system and a communication main board.
Background
With the rapid development of electronic products, more demands are being made on control devices. For example, the display content of the on-bus station screen is not simply displayed with several lines, but is a graphic display mode with richer pictures, more friendly interfaces and stronger functions. The Chinese patent publication No. CN207250105U discloses a double-control main board and a double-screen advertising machine, which solves the problem that the two-screen information interaction sharing cannot be realized because of the lack of necessary information interaction units and the isolated content displayed by the two screens. On the other hand, by using a simple control unit, a power supply unit and a screen design circuit, the circuit is simply overlapped to design a double-screen or even multi-screen advertising machine, so that the defects of idle resources of other devices in the device can be caused.
The utility model patent of China with the publication number of CN213818031U discloses an anti-electromagnetic interference connection structure for a display screen and a control main board of a set top box, which is arranged through a specific technical structure, and practically solves the technical defects that information is displayed through a liquid crystal display screen, the liquid crystal display screen is connected with the main board in the set top box through a cable, a large amount of electromagnetic waves can be generated in the operation process of the set top box, the cable connected between the main board and the liquid crystal display screen can be interfered by the electromagnetic waves, the display screen finally displays a fuzzy graph and the like, but the station screen power supply control and the communication main board with similar structures have a plurality of defects in actual use, such as the situation that a chip and accessories are burnt out due to unstable voltage frequently occurs in the use process, and the original design is found to be too complex in use, so that resources are wasted. Therefore, a power control and communication motherboard for a docking station is needed to solve these problems.
Disclosure of utility model
The utility model aims to provide a bus station screen power supply control system and a communication main board so as to solve the problems in the background technology.
The technical scheme is that the bus station screen power supply control system comprises an RS232 circuit, an RS485 circuit and an LED circuit, wherein the RS232 circuit, the RS485 circuit and the LED circuit are connected in parallel and are electrically connected with a DC5V power supply circuit, the DC5V power supply circuit is electrically connected with an external power supply P3 through a 24V power supply circuit, meanwhile, the RS232 circuit is electrically connected with a port P2, and the RS485 circuit is electrically connected with a port P1.
Further, the 24V power supply circuit includes a chip U1, a BOOT port of the chip U1 is electrically connected to a capacitor C4, the capacitor C4 is electrically connected to a SW port of the chip U1 and an inductor L1, the inductor L1 is electrically connected to a resistor R6, a capacitor C5, a capacitor C6, a capacitor C7, a cathode of a diode D5, a cathode of the diode D6 and a DC5V power supply circuit, and meanwhile, the resistor R6 is electrically connected to the resistor R5 and a VOUT/FB port of the chip U1, and the resistor R5 is electrically connected to a PGND port of the chip U1, the capacitor C5, the capacitor C6, the capacitor C7, an anode of the diode D5 and an anode of the diode D6;
The VIN port of the chip U1 is electrically connected with a resistor R4, a capacitor C2, a capacitor C8, a capacitor C9, a cathode of a diode D3, a cathode of the diode D4 and an external power supply P3, the resistor R4 is electrically connected with the EN/CLKIN port of the chip U1 and the resistor R2, the VCC port of the chip U1 is electrically connected with the capacitor C3, and meanwhile, the capacitor C3 is electrically connected with the resistor R2, the capacitor C8, the capacitor C9, an anode of the diode D3 and an anode of the diode D4.
Further, the DC5V power supply circuit includes a chip U5, a VIN port of the chip U5 is electrically connected to the 24V power supply circuit, a resistor R35, a capacitor C30, a capacitor C31 and a cathode of a diode D10, an EN port of the chip U5 is electrically connected to the resistor R35 and the resistor R37, a COMP port of the chip U5 is electrically connected to the capacitor C34 and the resistor R39, and the resistor R39 is electrically connected to the capacitor C35, and an SS port of the chip U5 is electrically connected to the capacitor C36;
The BOOT port of the chip U5 is electrically connected with the capacitor C29, the capacitor C29 is electrically connected with the cathode of the diode D7, the PH port of the chip U5 is electrically connected with the inductor L3, the inductor L3 is electrically connected with the cathode of the diode D7, the resistor R36, the capacitor C15, the capacitor C16, the capacitor C17, the cathode of the diode D9, the RS232 circuit, the RS485 circuit and the LED circuit, the capacitor C15, the capacitor C16, the capacitor C17 and the diode D9 are mutually connected in parallel, and are electrically connected with the 5V power supply port, the resistor R36 is electrically connected with the resistor R38, and the resistor R38 is electrically connected with the resistor R40 and the VSENSE port of the chip U5.
Furthermore, the RS232 circuit includes a chip U2, a c1+ port of the chip U2 is electrically connected to a C1-port of the chip U2 through a capacitor C1, a c2+ port of the chip U2 is electrically connected to a C2-port of the chip U2 through a capacitor C10, a v+ port of the chip U2 is electrically connected to a V-port of the chip U2 through a capacitor C11 and a capacitor C12, a VCC port of the chip U2 is electrically connected to an inductor L3 and a capacitor C13, a T1OUT port of the chip U2 is electrically connected to a T1OUT signal output port, an R1IN port of the chip U2 is electrically connected to an R1IN signal input port through a resistor R3, and a T1IN port of the chip U2 is electrically connected to the T1IN signal input port through a resistor R7, and simultaneously, a GND port of the chip U2, the capacitor C11, and the capacitor C12 are all grounded.
Further, the RS485 circuit includes a chip U3, an RE port of the chip U3 is electrically connected to a resistor R27, a collector of a transistor Q2, and a DE port of the chip U3, a base of the transistor Q2 is electrically connected to a resistor R25 and a resistor R26, both the resistor R25 and a DI port of the chip U3 are electrically connected to an R1OUT signal output port, the resistor R26 is electrically connected to an emitter of the transistor Q2, and an RO port of the chip U3 is electrically connected to a T1IN signal input port;
The VCC port of the chip U3 is electrically connected with the capacitor C14, the A A port of the chip U3 is electrically connected with the resistor R12 and the resistor R13, the resistor R12 is electrically connected with the resistor R11, the COM-A3 communication port and the 2 port of the rectifier bridge D8, the resistor R13 is electrically connected with the resistor R14 and the B B port of the chip U3, and the resistor R14 is electrically connected with the resistor R15 and the 1 port of the rectifier bridge D8;
The VCC port, the resistor R11 and the resistor R27 of the chip U3 are electrically connected with the inductor L3, and the emitter of the transistor Q2, the resistor R15, the resistor R26, the capacitor C14, the 3 port of the rectifier bridge D8 and the GND port of the chip U3 are all grounded.
Further, the LED circuit includes a light emitting diode D11, a cathode of the light emitting diode D11 is grounded, and an anode of the light emitting diode D11 is electrically connected to the inductor L3 through a resistor R8.
The utility model provides a bus station connects screen communication mainboard, is including carrying out bus station connects screen power control system's circuit board main part, the lower extreme of circuit board main part is provided with the mounting panel, the upper end of circuit board main part is provided with lithium ion battery and protection component, protection component sets up the upper end at lithium ion battery, just protection component passes through the curb plate to be fixed the upper end at the mounting panel, lithium ion battery electric connection has curved terminal, curved terminal sets up the upper end side at the circuit board main part.
Still further, the protection components is including protection casing and spring, the circuit board main part sets up the lower extreme at the protection casing, the upper end of protection casing is provided with the fixed block, the fixed block runs through the lower extreme of protection casing, and with the circuit board main part is linked together, the spring sets up the lower extreme at the circuit board main part.
Furthermore, both ends of the circuit board main body are fixed at the upper end of the mounting plate through a supporting seat and a screw rod, the supporting seat is arranged at the lower end of the screw rod, the screw rod is fixedly connected with the supporting seat through a screw cap, and meanwhile, an insulating gasket is sleeved on the outer side of the screw rod;
The spring sets up the side at the supporting seat, simultaneously the upper end of spring is provided with the backup pad, the upper end of backup pad is provided with the foam-rubber cushion, the foam-rubber cushion sets up the lower extreme at the circuit board main part, just the lower extreme of circuit board main part is laminated with the upper end of foam-rubber cushion mutually.
Still further, the ventilation groove has been seted up to one side lower extreme of fixed block, the ventilation groove is seted up at the upper end middle part of protection casing, simultaneously the inside of ventilation groove is provided with the dust screen, the upper end of dust screen is provided with radiator fan and temperature control diode, temperature control diode sets up the lower extreme at radiator fan, just radiator fan passes through the inside of screw fixation at the ventilation groove.
Compared with the prior art, the utility model provides the bus station screen power supply control system and the communication main board by improving, and has the following improvements and advantages:
The bus station screen-connected power supply control system converts an external power supply through the DC5V power supply circuit and the 24V power supply circuit and supplies power for the following functional modules, so that unstable or short-circuit conditions in the running process are reduced by providing stable power supply voltage, and the condition that most elements are damaged due to the fact that the control circuit is not facilitated by the original complex connecting elements can be avoided;
According to the bus station screen-connection communication main board, the components of the bus station screen-connection power supply control system, the bent wire holder and the lithium ion battery are arranged on the circuit board main body, so that the switch of the circuit board main body can be controlled through the switch triode, meanwhile, the voltage can work through the power inductor, when the voltage value changes greatly, the inductor can resist the change of current, and therefore the current limiting effect can be achieved.
Drawings
The utility model is further explained below with reference to the drawings and examples:
FIG. 1 is a system block diagram of a bus station screen power control system of the present utility model;
FIG. 2 is a circuit diagram of a 24V power supply circuit of the present utility model;
FIG. 3 is a circuit diagram of a DC5V power supply circuit of the present utility model;
FIG. 4 is a circuit diagram of an RS232 circuit of the present utility model;
FIG. 5 is a circuit diagram of an RS485 circuit of the utility model;
FIG. 6 is a circuit diagram of an LED circuit of the present utility model;
FIG. 7 is a top cross-sectional view of the bus stop screen communication motherboard of the present utility model;
FIG. 8 is a side cross-sectional view of a bus stop screen communication motherboard of the present utility model;
FIG. 9 is a partial side cross-sectional view of a mounting block of the present utility model;
FIG. 10 is a front view of the shield of the present utility model;
FIG. 11 is a partial top view of the mounting plate of the present utility model;
Reference numerals illustrate:
1. Mounting plate, 101, circuit board main body, 102, lithium ion battery, 103, bent binding post, 2, protection component, 201, side plate, 202, protection cover, 203, supporting seat, 204, screw rod, 205, insulating gasket, 206, nut, 207, spring, 208, supporting plate, 209, foam-rubber cushion, 3, fixing block, 301, ventilation groove, 302, cooling fan, 303, screw, 304, dust screen, 305, temperature control diode.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.
Example 1
Referring to fig. 1-6, the embodiment provides a bus station screen power control system, which comprises an RS232 circuit, an RS485 circuit and an LED circuit. The RS232 circuit, the RS485 circuit and the LED circuit are connected in parallel, and the parallel circuit among the RS232 circuit, the RS485 circuit and the LED circuit is electrically connected with an external power supply P3 through a DC5V power supply circuit and a 24V power supply circuit, wherein the DC5V power supply circuit is electrically connected with the 24V power supply circuit, and the 24V power supply circuit is electrically connected with the external power supply P3. Specifically, the RS232 circuit and the RS485 circuit are connected to each other, and perform information interaction, and meanwhile, the RS232 circuit is electrically connected to the port P2, and the RS485 circuit is electrically connected to the port P1.
In this embodiment, the 24V power supply circuit includes a chip U1, a BOOT port of the chip U1 is electrically connected to a capacitor C4, the capacitor C4 is electrically connected to a SW port of the chip U1 and an inductor L1, the inductor L1 is electrically connected to a resistor R6, a capacitor C5, a capacitor C6, a capacitor C7, a cathode of a diode D5, a cathode of the diode D6 and a DC5V power supply circuit, meanwhile, the resistor R6 is electrically connected to the resistor R5 and a VOUT/FB port of the chip U1, and the resistor R5 is electrically connected to a PGND port of the chip U1, the capacitor C5, the capacitor C6, the capacitor C7, an anode of the diode D5 and an anode of the diode D6. The VIN port of the chip U1 is electrically connected with a resistor R4, a capacitor C2, a capacitor C8, a capacitor C9, a cathode of a diode D3, a cathode of the diode D4 and an external power supply P3, the resistor R4 is electrically connected with the EN/CLKIN port of the chip U1 and the resistor R2, the VCC port of the chip U1 is electrically connected with the capacitor C3, and meanwhile, the capacitor C3 is electrically connected with the resistor R2, the capacitor C8, the capacitor C9, an anode of the diode D3 and an anode of the diode D4.
In this embodiment, the DC5V power supply circuit includes a chip U5, a VIN port of the chip U5 is electrically connected to the 24V power supply circuit, a resistor R35, a capacitor C30, a capacitor C31 and a cathode of a diode D10, an EN port of the chip U5 is electrically connected to the resistor R35 and the resistor R37, a COMP port of the chip U5 is electrically connected to the capacitor C34 and the resistor R39, and the resistor R39 is electrically connected to the capacitor C35, and an SS port of the chip U5 is electrically connected to the capacitor C36. The BOOT port of the chip U5 is electrically connected with the capacitor C29, the capacitor C29 is electrically connected with the cathode of the diode D7, the PH port of the chip U5 is electrically connected with the inductor L3, the inductor L3 is electrically connected with the cathode of the diode D7 and the resistor R36, the capacitor C15, the capacitor C16, the capacitor C17, the cathode of the diode D9, the RS232 circuit, the RS485 circuit and the LED circuit, the capacitor C15, the capacitor C16, the capacitor C17 and the diode D9 are mutually connected in parallel, and are electrically connected with the 5V power supply port, the resistor R36 is electrically connected with the resistor R38, and the resistor R38 is electrically connected with the resistor R40 and the VSENSE port of the chip U5.
IN this embodiment, the RS232 circuit includes a chip U2, a c1+ port of the chip U2 is electrically connected to a C1-port of the chip U2 through a capacitor C1, a c2+ port of the chip U2 is electrically connected to a C2-port of the chip U2 through a capacitor C10, a v+ port of the chip U2 is electrically connected to a V-port of the chip U2 through a capacitor C11 and a capacitor C12, a VCC port of the chip U2 is electrically connected to an inductor L3 and a capacitor C13, a T1OUT port of the chip U2 is electrically connected to a T1OUT signal output port, a R1IN port of the chip U2 is electrically connected to a R1IN signal input port through a resistor R3, a T1IN port of the chip U2 is electrically connected to a T1IN signal input port through a resistor R7, and a GND port of the chip U2, the capacitor C11, the capacitor C12 and the capacitor C13 are all grounded.
In this embodiment, the RS485 circuit includes a chip U3, and the chip U3The port is electrically connected with the resistor R27, the collector of the transistor Q2 and the DE port of the chip U3, the base of the transistor Q2 is electrically connected with the resistor R25 and the resistor R26, the resistor R25 and the DI port of the chip U3 are electrically connected with the R1OUT signal output port, the resistor R26 is electrically connected with the emitter of the transistor Q2, and the RO port of the chip U3 is electrically connected with the T1IN signal input port. The VCC port of the chip U3 is electrically connected with the capacitor C14, the A A port of the chip U3 is electrically connected with the resistor R12 and the resistor R13, the resistor R12 is electrically connected with the resistor R11, the COM-A3 communication port and the 2 port of the rectifier bridge D8, the resistor R13 is electrically connected with the resistor R14 and the B B port of the chip U3, and the resistor R14 is electrically connected with the resistor R15 and the 1 port of the rectifier bridge D8. The VCC port of the chip U3, the resistor R11 and the resistor R27 are electrically connected with the inductor L3, and the emitter of the transistor Q2, the resistor R15, the resistor R26, the capacitor C14, the 3 port of the rectifier bridge D8 and the GND port of the chip U3 are all grounded.
In this embodiment, the LED circuit includes a light emitting diode D11, a cathode of the light emitting diode D11 is grounded, and an anode of the light emitting diode D11 is electrically connected to the inductor L3 through a resistor R8.
Specifically, the DC5V power supply circuit and the 24V power supply circuit realize the conversion of a system power supply from 24V- >5V voltage and supply power to each functional unit. The TTL interfaces in the RS485 circuit and the RS232 circuit are connected with each other, so that the function of mutually converting the communication level between the RS485 circuit and the RS232 circuit can be realized. Meanwhile, the LED circuit has a power supply indication function, and whether the power supply of the main board is normal or not can be observed through the LED indicator lamp when the LED circuit is electrified.
Example 2
Referring to fig. 7-11, the present embodiment provides a bus station screen communication motherboard, which includes a circuit board main body 101 for implementing the bus station screen power control system in embodiment 1. In the present embodiment, the upper end of the circuit board main body 101 is provided with a lithium ion battery 102, a bent terminal 103, and a protection assembly 2. The protection component 2 is disposed at an upper end of the lithium ion battery 102, and the protection component 2 is fixed at an upper end of the mounting plate 1 through a side plate 201, the lithium ion battery 102 is electrically connected with a bent terminal 103, and the bent terminal 103 is disposed at an upper end side edge of the circuit board main body 101. Specifically, the lithium ion battery 102 is electrically connected between the bent terminal 103 and the self-restoring fuse, so that it can play a role of protection. That is, the protected positive-stage electricity is transmitted to the VCC port of the power output port through the bent terminal 103, and the other end of the lithium ion battery 102 is connected in parallel with the negative electrode of the bent terminal 103, so that the filtering and voltage stabilizing effects of the power supply can be better performed, and the stable operation of the rear-stage module can be ensured.
In this embodiment, the guard assembly 2 includes a guard 202 and a spring 207. Wherein the circuit board main body 101 is arranged at the lower end of the protective cover 202, the upper end of the protective cover 202 is provided with a fixed block 3, and the fixed block 3 penetrates through the lower end of the protective cover 202 and is communicated with the circuit board main body 101, and the spring 207 is arranged at the lower end of the circuit board main body 101. Further, both ends of the circuit board main body 101 are fixed at the upper end of the mounting plate 1 through the supporting seat 203 and the screw rod 204, the supporting seat 203 is arranged at the lower end of the screw rod 204, the screw rod 204 is fixedly connected with the supporting seat 203 through the nut 206, and meanwhile, the insulating gasket 205 is sleeved on the outer side of the screw rod 204. The spring 207 is arranged on the side of the supporting seat 203, meanwhile, a supporting plate 208 is arranged at the upper end of the spring 207, a foam cushion 209 is arranged at the upper end of the supporting plate 208, the foam cushion 209 is arranged at the lower end of the circuit board main body 101, and the lower end of the circuit board main body 101 is attached to the upper end of the foam cushion 209. Specifically, the arrangement of the insulating spacer 205 can avoid the influence of the metal conductivity of the nut 206 on the normal operation of the circuit, and the elastic force of the spring 207 acts on the supporting plate 208, so that the supporting plate 208 can perform a damping supporting function on the circuit board main body 101, thereby avoiding the damage to the circuit board main body 101 caused by larger vibration during the driving process of the bus.
Specifically, the four sides of the circuit board main body 101 are opened through the screw rod 204 and mounted on the top of the supporting seat 203, then the insulating spacer 205 is sleeved on the outer side of the screw rod 204 and positioned on the top of the circuit board main body 101, and then the screw cap 206 is rotatably mounted on the top of the screw rod 204, so that the circuit board main body 101 can be fixedly mounted on the top of the supporting seat 203. And then the protective cover 202 is rotated between the side plates 201, so that the protective cover 202 covers the top of the circuit board main body 101, and the circuit board main body 101 is protected, and the overall protection performance of the device is improved.
Further, a ventilation groove 301 is formed in the lower end of one side of the fixing block 3, the ventilation groove 301 is formed in the middle of the upper end of the protective cover 202, a dust screen 304 is arranged in the ventilation groove 301, a cooling fan 302 and a temperature control diode 305 are arranged at the upper end of the dust screen 304, the temperature control diode 305 is arranged at the lower end of the cooling fan 302, and the cooling fan 302 is fixed in the ventilation groove 301 through a screw 303. Specifically, the heat dissipation fan 302 is fixedly mounted inside the fixing block 3 by the screw 303, so that the heat dissipation fan 302 can dissipate heat of the circuit board main body 101, and further, the short circuit of the circuit board main body 101 due to overheat is avoided. Meanwhile, the ventilation groove 301 can radiate heat to the circuit board main body 101, and the dust-proof screen 304 can prevent dust from being accumulated in the protective cover 202, so that the heat radiation effect of electronic components on the surface of the circuit board main body 101 is ensured. Meanwhile, when the temperature of the mounting board 1 is higher, the temperature control diode 305 controls the heat dissipation fan 302 to conduct heat dissipation treatment on the mounting board 1, so that the condition that the circuit board main body 101 is short-circuited due to the fact that the working temperature of the mounting board 1 is too high is avoided. It should be noted that, the information interaction between the heat dissipation fan 302 and the temperature control diode 305 is a conventional information interaction means in the prior art, so the description will not be repeated in this embodiment.
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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420667185.0U CN222547356U (en) | 2024-04-02 | 2024-04-02 | A bus station screen power supply control system and communication mainboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420667185.0U CN222547356U (en) | 2024-04-02 | 2024-04-02 | A bus station screen power supply control system and communication mainboard |
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| Publication Number | Publication Date |
|---|---|
| CN222547356U true CN222547356U (en) | 2025-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420667185.0U Active CN222547356U (en) | 2024-04-02 | 2024-04-02 | A bus station screen power supply control system and communication mainboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222547356U (en) |
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- 2024-04-02 CN CN202420667185.0U patent/CN222547356U/en active Active
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