A LED street light for smart cities

Abstract

The present application relates to the technical field related to lighting, and discloses an LED street lamp for smart cities. In order to solve the problem of poor heat dissipation and dust prevention of the street lamp, the power-connecting part of the lamp bead is placed in a relatively sealed liquid storage cavity, and a conductive liquid is introduced into the liquid storage cavity. Since the liquid storage cavity is relatively sealed, external dust is not easy to corrode the power-connecting part of the lamp bead, thereby ensuring the service life of the lamp bead. At the same time, during the lighting process of the lamp bead, the light box is continuously moved up and down to make the conductive liquid continuously flow in the liquid storage cavity, and the lamp bead through which the conductive liquid passes will light up, thereby ensuring that the lamp bead can work intermittently and avoiding continuous temperature rise due to its continuous work, thereby finally achieving efficient heat dissipation and dust prevention effects.

Description

Technical Field

[0001] The present application relates to the technical field related to lighting, and in particular to an LED street lamp for a smart city. Background Art

[0002] Municipal LED street lights are not only the core elements of modern lighting systems, but also rely on efficient and energy-saving LED light sources to significantly improve luminous efficiency, extend service life, and demonstrate excellent environmental protection and energy-saving characteristics, covering the city's nights with a bright and warm coat, greatly improving residents' night travel experience, while also adding a sense of modernity and vitality to the city, promoting the overall improvement of the city's image and a leap in the quality of life of residents.

[0003] However, in the wide application of LED street lights, their lifespan is significantly affected by temperature stability. In order to deal with the problem of continuous heating caused by long-term operation, the current design generally installs multiple heat sinks on the outside of LED street lights to reduce the operating temperature by increasing the heat exchange area. However, under extreme weather conditions, especially when the external temperature is high, the heat dissipation efficiency will be greatly reduced if it only relies on the natural heat exchange between the heat sink and the atmosphere.

[0004] In addition, since the heat sink is directly exposed to the external environment, the street lamps on both sides of the road are very vulnerable to dust. The long-term accumulation of dust not only affects the heat dissipation effect, but may also penetrate into the LED light board, causing problems such as reduced light efficiency and circuit short circuit, thereby seriously shortening the service life of the LED street lamp. Therefore, in the design and maintenance of LED street lamps, how to more effectively solve the heat dissipation and dust prevention problems has become a key challenge to improve the performance of street lamps and extend their service life. Summary of the invention

[0005] The present application proposes an LED street lamp for smart cities, which has the advantages of efficient heat dissipation and dust prevention, and is used to solve the problem of poor heat dissipation and dust prevention effects of street lamps mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: an LED street lamp for smart cities, comprising: a supporting lamp pole, a supporting cantilever is installed on the top, and a light box is fixedly installed on the end of the supporting cantilever, and a lamp bead is fixedly installed on the bottom of the light box; a liquid storage chamber is opened inside the light box, and the liquid storage chamber is filled with conductive liquid; a PLC controller is located at the end of the light box and is used to electrically control the entire machine; a power supply column is fixed inside the light box; an adjustment box is fixed inside the supporting lamp pole, and a driving piston is mounted inside the adjustment box, and the bottom of the driving piston is movably connected between the driving pull rod and the supporting cantilever; an exhaust pipe is fixed on the side of the adjustment box; a magnetic block is fixed on the bottom of the driving piston, and a coil located below the magnetic block is fixedly installed inside the adjustment box, and a lower detection point is fixedly installed on the bottom inside the adjustment box.

[0007] Furthermore, a reset push rod is movably installed at the bottom of the supporting cantilever, a reset push spring is connected between the reset push rod and the supporting cantilever, a reset stop block is fixedly installed on the inner side of the supporting lamp pole, and a cleaning push block located below the lamp box is fixedly installed on the side of the reset push rod.

[0008] Furthermore, the cross-sectional shape of the reset stopper is a right triangle.

[0009] Furthermore, an air equalizing plate is fixedly installed at one end of the exhaust pipe, an air intake pipe is fixedly installed at the side of the regulating box, and the end of the air intake pipe is connected to the outside after passing through the air filter drying box.

[0010] Furthermore, a pressure relief cylinder is fixedly installed in the middle of the light box, and a pressure relief hole is opened on the side of the pressure relief cylinder. A pressure relief piston is movably installed inside the pressure relief cylinder, and a limiting pressure spring is connected between the pressure relief piston and the pressure relief cylinder. A pressure relief push column is fixedly installed at the bottom of the pressure relief piston.

[0011] Furthermore, a liquid storage tank is fixedly installed on the top of the regulating box, an electromagnetic on-off valve is fixedly installed on the outside of the liquid storage tank, and liquid level detection contacts are symmetrically installed on both sides of the inner side of the light box. The liquid level detection contacts are electrically connected to the PLC controller.

[0012] Furthermore, a liquid storage cylinder is fixedly installed on the top of the driving piston, and a liquid discharge head is arranged at the bottom of the liquid storage tank.

[0013] Furthermore, an upper detection point is fixedly installed on the top inner side of the adjustment box, a limited motion slide is installed on the end of the supporting cantilever, and the limited motion slide and the reset push rod are fixedly connected, the limited motion slide and the driving pull rod are movably connected, a re-pressure retreat frame is fixedly installed on the end of the reset push rod, a baffle plate is movably installed on the end of the light box, and the baffle plate is connected to the supporting cantilever according to a tension spring, and the baffle plate is affected by the tension spring to block the air leakage hole opened at the end of the light box.

[0014] The present invention has the following beneficial effects:

[0015] The present application provides a smart city LED street lamp, which cleverly places the power connection part of the lamp bead in a relatively sealed liquid storage cavity and injects conductive liquid into the cavity. Due to the sealed design of the liquid storage cavity, the direct contact and erosion of the power connection part of the lamp bead by external dust is effectively isolated, thereby significantly extending the service life of the LED lamp bead.

[0016] During the lighting process, the light box can continuously move up and down. This movement causes the conductive liquid in the liquid storage chamber to produce a continuous reciprocating flow. Only when the conductive liquid flows through specific lamp beads will these lamp beads be lit, realizing the intermittent working mode of the lamp beads. This working mode not only reduces the continuous working time of the lamp beads and avoids the sharp rise in temperature caused by long-term work, but also naturally takes away the heat generated by the lamp beads through the flow of conductive liquid, realizing efficient heat dissipation.

[0017] In summary, this type of LED street light for smart cities, through its unique liquid storage cavity design and dynamic mechanism of the light box, not only effectively solves the dust prevention problem faced by traditional street lights, but also significantly improves the heat dissipation efficiency, ensures the stable operation and long life of the LED lamp beads, and provides a more reliable and efficient lighting solution for the construction of smart cities. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0019] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a schematic diagram of the overall external three-dimensional structure;

[0021] Figure 2 It is a schematic diagram of the overall internal three-dimensional structure;

[0022] Figure 3 for Figure 2 The enlarged structural diagram at F in the middle;

[0023] Figure 4 for Figure 2 The enlarged structural diagram at E in the middle;

[0024] Figure 5 It is a schematic diagram of the overall internal plan section structure;

[0025] Figure 6 This is a schematic diagram of the external three-dimensional structure of the light box;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the lamp bead.

[0027] In the figure: 1. Support lamp pole; 2. Light box; 200. Liquid storage chamber; 201. Air leakage hole; 202. Orifice plate; 3. PLC controller; 4. Support cantilever; 5. Pressure relief cylinder; 500. Pressure relief hole; 501. Pressure relief piston; 502. Pressure limiting spring; 503. Pressure relief push column; 6. Pressure-recovery rack; 7. Cleaning push block; 8. Liquid storage tank; 800. Liquid discharge head; 9. Air filter drying box; 10. Air suction pipe; 11. Reset block; 12. Drive rod; 120. Drive piston; 121. Liquid storage cylinder; 13. Limit slide; 14. Reset push rod; 140. Reset push spring; 15. Lamp bead; 16. Air equalizing plate; 17. Liquid level detection contact; 18. Power supply column; 19. Solenoid on-off valve; 20. Adjustment box; 21. Upper detection point; 22. Lower detection point; 23. Coil; 24. Magnetic block; 25. Exhaust pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0029] See also Figure 1 It can be seen that the support lamp pole 1 is fixed at a desired position by a flange at the bottom, a support cantilever 4 is hinged at the top of the support lamp pole 1, and a light box 2 is fixedly installed at the end of the support cantilever 4. Figure 2 and Figure 7 It can be seen that a liquid storage cavity 200 is provided inside the light box 2, and a lamp bead 15 is fixedly installed at the bottom of the light box 2. Since the lead wires of the lamp bead 15 are long and short, the longer part is inserted into the liquid storage cavity 200, and the shorter lead wire is connected to the PLC controller 3 fixed at the end of the light box 2 through the lead wire. A power transmission column 18 located at the bottom of the liquid storage cavity 200 is fixedly installed inside the light box 2, and the power transmission column 18 is connected to the PLC controller 3. In actual application, an appropriate amount of conductive liquid (such as electrolyte solution, liquid metal or other conductive liquid) is added to the liquid storage cavity 200. When the conductive liquid connects the power transmission column 18 and the long lead wire of the lamp bead 15, the PLC controller 3 is used to control and force the connected lamp bead 15 to emit light, which is used for lighting.

[0030] Combination Figure 2 , Figure 4 and Figure 5 It can be seen that an adjustment box 20 is fixed inside the support lamp pole 1, and a driving piston 120 is mounted inside the adjustment box 20, and the bottom of the driving piston 120 is movably connected between the driving pull rod 12 and the supporting cantilever 4. When the driving piston 120 moves up and down inside the adjustment box 20, the exhaust pipe 25 fixed on the side of the adjustment box 20 can be used to slowly exhaust air, thereby achieving the effect of damping the movement of the driving piston 120. Figure 4It can be seen that the exhaust pipe 25 is located on the upper and lower sides of the side of the regulating box 20. When the driving piston 120 moves up and down, a corresponding damping effect will be generated. A magnetic block 24 is fixedly installed at the bottom of the driving piston 120, and a coil 23 located below the magnetic block 24 is fixedly installed inside the regulating box 20. When the coil 23 is energized, due to the different directions of the current, it will form a repulsion / attraction phenomenon with the magnetic block 24. In the first embodiment, a lower detection point 22 is fixedly installed at the bottom of the inner side of the regulating box 20. When the driving piston 120 reaches the position of the lower detection point 22, the lower detection point 22 will input an electrical signal to the PLC controller 3, and the PLC controller 3 will force the coil 23 to work, forcing a magnetic repulsion phenomenon to occur between the coil 23 and the magnetic block 24, so that the magnetic block 24 pushes the driving piston 120 to move upward.

[0031] In specific application, a proper amount of conductive liquid is first injected into the liquid storage cavity 200. Due to the presence of the conductive liquid, the power transmission column 18 and the lamp bead 15 are connected, and the lamp bead 15 emits bright light for lighting.

[0032] At the same time, under the action of gravity of the magnetic block 24 and the driving piston 120, the driving rod 12 will be pushed downward, and the downward moving driving rod 12 will cause the reset push rod 14 to drive the lamp box 2 to deflect clockwise. At this time, the left side of the liquid storage chamber 200 is higher than the right side. Since the conductive liquid is fluid, the guide liquid will flow to the right. As the left side of the lamp box 2 is continuously lifted, the conductive liquid will separate from the lamp beads 15 on the left side in turn, which means that the lamp beads 15 will not work, thus avoiding the phenomenon of severe heat caused by the continuous work of the lamp beads 15. At the same time, as the conductive liquid flows, the heat generated by the lamp beads 15 on the left will be taken away, thereby cooling the lamp beads 15.

[0033] When the driving piston 120 moves downward and contacts the lower detection point 22, the coil 23 is driven by the PLC controller 3 to generate a magnetic force that repels the magnet 24. As the coil 23 pushes the magnet 24 upward, the driving rod 12 pulls the supporting cantilever 4 to deflect counterclockwise. At this time, the right side of the liquid storage chamber 200 is higher than the left side. As the conductive liquid flows, the left lamp bead 15 is forced to emit light, and the right lamp bead 15 is in a disconnected and cooled state. As the coil 23 is started, the PLC controller 3 will restrict its power-on time, and its power-on time may need to be adjusted. When the power-on countdown ends, the coil 23 will no longer provide upward magnetic force for the magnet 24. After that, the magnet 24 and the driving piston 120 will be affected by gravity and force the driving piston 120 to move downward again. This cycle will cause the conductive liquid in the liquid storage chamber 200 to flow back and forth left and right, so that the lamp bead 15 at the bottom of the light box 2 is periodically connected, so that the lamp bead 15 can perform lighting when it is turned on; when the power is off, it will cool down to avoid the phenomenon of continuous temperature rise due to its continuous operation. Example

[0034] Further improvements are made based on Example 1. Figure 5 and Figure 6 It can be seen that a reset push rod 14 is movably installed at the bottom of the supporting cantilever 4, and a reset push spring 140 is connected between the reset push rod 14 and the supporting cantilever 4. Due to the elastic force of the reset push spring 140, the end of the reset push rod 14 always has a tendency to move toward the inside of the supporting lamp pole 1. Correspondingly, a reset stopper 11 is fixedly installed on the inner side of the supporting lamp pole 1. The cross-sectional shape of the reset stopper 11 is a right-angled triangle. When the reset push rod 14 hits the inclined surface of the reset stopper 11, it will force the end of the supporting cantilever 4 to have a tendency to move downward, thereby further enhancing the downward pulling strength of the driving rod 12, and avoiding the failure of the light box 2 to deflect downward normally due to insufficient gravity of the driving piston 120 and the magnetic block 24.

[0035] On this basis, a cleaning push block 7 located below the lamp box 2 is fixedly installed on the side of the reset push rod 14. The cross-sectional shape of the cleaning push block 7 is an isosceles triangle. When the cleaning push block 7 is attached to the bottom of the light box 2 and slides, the cleaning push block 7 is used to scrape the surface of the lamp bead 15 to avoid poor lighting due to dust accumulation at the bottom of the lamp bead 15.

[0036] In actual application, when the driving piston 120 drives the driving pull rod 12 downward, the reset push rod 14 is pressed against the reset stop block 11 by the elastic force of the reset push spring 140. The clockwise deflection strength of the supporting cantilever 4 is increased due to the influence of the inclined surface of the reset stop block 11. At the same time, since the reset push rod 14 is pushed toward the reset stop block 11 by the elastic force of the reset push spring 140, the cleaning push block 7 will follow the reset push rod 14 to scrape the lamp beads 15 at the bottom of the lamp box 2, thereby scraping off the dust at the bottom of the lamp beads 15.

[0037] When the driving piston 120 moves upward due to the magnetic repulsion between the coil 23 and the magnet 24, the supporting cantilever 4 deflects counterclockwise, and then uses the inclined surface of the reset block 11 to push the reset push rod 14 to compress the reset push spring 140. The reset push rod 14 again drives the cleaning push block 7 to move in the opposite direction along the bottom of the lamp box 2, thereby scraping the bottom of the lamp bead 15 again, so as to ensure that the lamp bead 15 will not accumulate dust and cause poor lighting. Example

[0038] As a supplement to the first and second embodiments, in order to further dissipate the heat of the conductive liquid in the liquid storage cavity 200, please refer to Figure 3 , Figure 4 and Figure 5It can be clearly seen that an air-equalizing plate 16 located at the bottom of the liquid storage chamber 200 is fixedly installed at one end of the exhaust pipe 25. When the airflow in the exhaust pipe 25 enters the liquid storage chamber 200 through the exhaust pipe 25, the air-equalizing plate 16 is used to evenly disperse the airflow, so that it enters from the bottom of the conductive liquid in the form of aeration. An air intake pipe 10 is fixedly installed on the side of the regulating box 20, and the end of the air intake pipe 10 is connected to the outside after passing through the air filter drying box 9. The air filter drying box 9 generally contains components such as an activated carbon plate, a limestone plate, and a filter cotton plate, so as to ensure that the external airflow can be input into the regulating box 20 after purification. Specifically, in actual application, a one-way air valve needs to be installed at the connection between the regulating box 20, the air intake pipe 10, and the exhaust pipe 25, so as to ensure that the external airflow is unidirectionally input into the regulating box 20 through the air intake pipe 10, and can be unidirectionally discharged into the exhaust pipe 25 when the driving piston 120 moves.

[0039] from Figure 2 and Figure 3 It can be seen that a pressure relief cylinder 5 is fixedly installed in the middle of the light box 2, and a pressure relief hole 500 communicating with the inner cavity of the light box 2 is opened on the side of the pressure relief cylinder 5. A pressure relief piston 501 is movably installed inside the pressure relief cylinder 5, and a pressure limiting spring 502 is connected between the pressure relief piston 501 and the pressure relief cylinder 5. Under normal circumstances, the pressure relief piston 501 will pass over the pressure relief hole 500 due to the elastic force of the pressure limiting spring 502, preventing the pressure relief hole 500 from communicating with the outside. A pressure relief push column 503 extending from the middle part of the bottom of the light box 2 is fixedly installed at the bottom of the pressure relief piston 501. Figure 3 It can be seen that an elongated groove is provided at the bottom of the light box 2 and at the bottom end of the pressure relief tube 5. When the airflow inside the light box 2 is output from the pressure relief tube 5 to the outside, the airflow will be output from the elongated groove to the outside, so that the airflow can be evenly sprayed downward.

[0040] Specifically, when the driving rod 12 is placed at the lower detection point 22, the coil 23 is energized and starts the countdown. As the driving piston 120 moves upward, Figure 2 and Figure 4 It can be seen that the chamber space below the driving piston 120 becomes larger. At this time, the external airflow is sucked into the chamber through the air intake pipe 10 and the air filter drying box 9; similarly, the airflow in the chamber above the driving piston 120 is pressurized and input from the exhaust pipe 25 to the air equalizing plate 16, and after passing through the air equalizing plate 16, the airflow is injected into the conductive liquid in the liquid storage chamber 200, thereby achieving airflow cooling of the conductive liquid. When the driving piston 120 is in the upward process, the driving pull rod 12 will also pull the right end of the supporting cantilever 4 to deflect upward. When the supporting cantilever 4 is pulled to a horizontal position, the cleaning push block 7 is driven by the reset push rod 14 to move to the middle part of the bottom of the lamp box 2. At this time, the tip of the cleaning push block 7 will press against the pressure relief push column 503, from Figure 3It can be known that when the pressure relief push pin 503 pushes the pressure relief piston 501 upward to compress the pressure limiting spring 502, the pressure of the air flow input through the air equalizing plate 16 in the liquid storage chamber 200 is released downward from the pressure relief hole 500, and the air flow will blow downward evenly and quickly from the top of the cleaning push block 7, so that the dust remaining on the side of the cleaning push block 7 due to scraping is blown out, ensuring that the cleaning push block 7 is relatively clean.

[0041] When the coil 23 is energized, the reset push rod 14 is pushed to the inclined surface of the reset stop block 11 by the elastic force of the reset push spring 140, and the drive piston 120 is pulled downward through the drive pull rod 12. Similarly to the above, the external airflow will enter the chamber above the drive piston 120, and the airflow in the chamber below the drive piston 120 will be transported to the liquid storage chamber 200, and finally, after the cleaning push block 7 passes, the pressurized airflow will be released outward.

[0042] It can be seen that during the application of the third embodiment, the environment of the liquid storage chamber 200 can be ensured to be relatively closed to the outside, thereby avoiding the invasion of external impurities such as dust and causing the conductive liquid in the liquid storage chamber 200 to fail, thereby greatly improving the stability of the equipment operation. Example

[0043] Further improvement is made on the basis of the third embodiment. Since the conductive liquid may not be used normally due to loss or failure when used for a long time, in order to replenish it in time, please refer to Figure 2-Figure 5 It can be seen that a liquid storage tank 8 is fixedly installed on the top of the regulating box 20, and a sufficient amount of conductive liquid is poured into the liquid storage tank 8. The top of the liquid storage tank 8 is connected to the air filter drying box 9, so that the conductive liquid in the liquid storage tank 8 is easier to pour out. An electromagnetic on-off valve 19 for controlling the outflow of the conductive liquid in the liquid storage tank 8 is fixedly installed on the outside of the liquid storage tank 8. Correspondingly, liquid level detection contacts 17 are symmetrically installed on both sides of the inner side of the light box 2, and the two liquid level detection contacts 17 are located below the pressure relief hole 500 in the horizontal direction. The liquid level detection contacts 17 are electrically connected to the PLC controller 3. When the conductive liquid connects the power supply column 18 and the liquid level detection contacts 17, a signal will be input to the PLC controller 3, and the electromagnetic on-off valve 19 will be in a closed state after being processed by the PLC controller 3; on the contrary, when the liquid level detection contacts 17 and the power supply column 18 are not connected, the electromagnetic on-off valve 19 will be in an open state.

[0044] In specific implementation, under normal conditions, the height of the conductive liquid in the liquid storage chamber 200 is aligned with the liquid level detection contact 17, and the conductive liquid makes the liquid level detection contact 17 and the power transmission column 18 electrically connected. After receiving the signal, the PLC controller 3 will close the electromagnetic on-off valve 19, so that the conductive liquid in the liquid storage tank 8 will not be output. When the driving piston 120 moves up and down in the regulating box 20, the air blowing and cooling content mentioned in the above embodiment is realized.

[0045] It is common sense that when the light box 2 is relatively tilted, the conductive liquid will gather on one side of the liquid storage chamber 200, and therefore, the liquid level detection contact 17 and the power transmission column 18 will inevitably be electrically connected. When the light box 2 is in a horizontal state, if the height of the liquid surface is not enough to exceed the liquid level detection contact 17, the conductive liquid will not connect the liquid level detection contact 17 and the power transmission column 18. At this time, after receiving the signal, the PLC controller 3 will force the electromagnetic on-off valve 19 to open until the conductive liquid in the liquid storage tank 8 enters above the drive piston 120. When the driving piston 120 moves upward, since there is conductive liquid and airflow above the driving piston 120, the airflow will be located above the conductive liquid. As the driving piston 120 continues to move upward, the supporting cantilever 4 will deflect, so that the conductive liquid in the liquid storage chamber 200 will gather to the left side of the light box 2, and the liquid level detection contact 17 and the power supply column 18 will be connected again, and the electromagnetic on-off valve 19 will be closed. The driving piston 120 will pass the upper airflow and conductive liquid into the liquid storage chamber 200 through the exhaust pipe 25, so as to replenish the conductive liquid.

[0046] When the conductive liquid in the liquid storage chamber 200 has poor conductivity or other reasons, since the liquid level detection contact 17 and the power transmission column 18 are connected through the conductive liquid, if the conductive liquid makes its connection unstable due to partial failure or other reasons, it will still be opened by the electromagnetic on-off valve 19 as mentioned above and conductive liquid will be added to the liquid storage chamber 200. Since the conductive liquid added at this time will cause the height in the liquid storage chamber 200 to increase significantly, in order to avoid excessive conductive liquid causing the lamp bead 15 to be unable to be periodically connected normally, when the conductive liquid in the liquid storage chamber 200 is too high and exceeds the height of the pressure relief hole 500, as the pressure in the liquid storage chamber 200 increases, when the cleaning push block 7 passes the pressure relief push column 503, the pressure relief piston 501 is pushed upward by the pressure relief push column 503, forcing excessive conductive liquid to be discharged from the pressure relief hole 500, avoiding excessive total amount of conductive liquid in the liquid storage chamber 200. Example

[0047] Based on the fourth embodiment, the liquid storage tank 8 is placed on the top of the supporting lamp pole 1. When the conductive liquid in the liquid storage tank 8 is consumed, it is difficult for outsiders to quickly check. In order to solve this problem, Figure 2-Figure 5It can be seen that a liquid storage cylinder 121 is fixedly installed on the top of the driving piston 120, and a liquid discharge head 800 is provided at the bottom of the liquid storage tank 8, and the liquid discharge head 800 and the liquid storage cylinder 121 are in a nested relationship. Since the liquid storage cylinder 121 is located below the liquid discharge head 800, when the liquid discharge head 800 injects conductive liquid downward, the liquid storage cylinder 121 is filled first. In actual application, under normal conditions, when the conductive liquid in the liquid storage chamber 200 is reduced, the electromagnetic on-off valve 19 opens, and the conductive liquid in the liquid storage tank 8 enters the liquid storage cylinder 121, and overflows to the top of the driving piston 120 after it is filled. As the driving piston 120 moves upward, the liquid discharge head 800 will be inserted into the liquid storage cylinder 121, and the conductive liquid in the liquid storage cylinder 121 will flow back to the liquid storage tank 8 due to the opening of the electromagnetic on-off valve 19. At the same time, the chamber at the top of the driving piston 120 can only leak outward from the exhaust pipe 25, and the conductive liquid above the driving piston 120 will first enter the exhaust pipe 25, thereby completing the replenishment of the conductive liquid in the liquid storage chamber 200. As new conductive liquid is injected into the liquid storage chamber 200, the conductive liquid in the liquid storage chamber 200 can be used normally again. At this time, the connection between the liquid level detection contact 17 and the power supply column 18 forces the electromagnetic on-off valve 19 to close again. As the driving piston 120 continues to move upward, the conductive liquid in the liquid storage cylinder 121 will be squeezed. Since the conductive liquid cannot be compressed, the driving piston 120 is affected by the liquid release head 800 and cannot move further upward.

[0048] As the conductive liquid in the liquid storage tank 8 is continuously consumed during long-term use until it is used up, when the conductive liquid is lacking in the liquid storage chamber 200, even if the light box 2 is deflected and the liquid cannot connect the liquid level detection contact 17 and the power supply column 18 again, the electromagnetic on-off valve 19 will continue to be connected, and then the driving rod 12 will move further upward until the reset push rod 14 passes the reset block 11. After that, when the countdown of the coil 23 power-on is over, the reset push rod 14 will hit the right angle surface at the top of the reset block 11, so that the light box 2 is deflected upward. At this time, the light box 2 is always in a trend of pointing to the ground. During maintenance, since the light box 2 is always pointing to the ground, the maintenance personnel only need to observe the state of the light box 2 to know whether the conductive liquid in the liquid storage tank 8 is sufficient, which is convenient for the maintenance personnel to perform maintenance work at low altitude. Example

[0049] Based on the fifth embodiment, in order to provide a sound alarm, the Figure 2-Figure 5 As can be seen in the figure, an upper detection point 21 is fixedly installed on the top of the inner side of the regulating box 20. When the reset push rod 14 passes over the reset block 11, the driving piston 120 will be placed at the upper detection point 21, thereby inputting a signal to the PLC controller 3, thereby realizing the magnetic repulsion between the magnetic block 24 and the coil 23. Correspondingly, in combination with Figure 5 and Figure 6It can be seen that a limited slide 13 is installed at the end of the supporting cantilever 4, and the limited slide 13 and the reset push rod 14 are fixedly connected, so that the limited slide 13 can follow the movement of the reset push rod 14, and the limited slide 13 and the driving rod 12 are movably connected. When the reset push rod 14 moves up and down along the inclined surface of the reset block 11, the driving rod 12 and the limited slide 13 are connected, so that the driving rod 12 drives the supporting cantilever 4 to deflect up and down. When the reset push rod 14 moves to the top of the reset block 11, it will drive the limited slide 13 to disengage from the driving rod 12, and the movement of the driving rod 12 will not cause the supporting cantilever 4 to deflect.

[0050] Combination Figure 5 and Figure 6 It can be seen that a re-pressure retreat frame 6 is fixedly installed at the end of the reset push rod 14, and the cross-sectional shape of the re-pressure retreat frame 6 is a triangle. A baffle plate 202 is movably installed at the end of the light box 2, and the baffle plate 202 is connected to the supporting cantilever 4 according to a tension spring. Under normal circumstances, the baffle plate 202 is affected by the tension spring to block the air leakage hole 201 opened at the end of the light box 2.

[0051] When the reset push rod 14 passes over the reset block 11, it will cause the reset push rod 14 to pull the limit slide 13 away from the driving rod 12. At the same time, the cleaning push block 7 will pass over the baffle plate 202 and be located on its right side due to the elastic force of the reset push spring 140, and the re-pressure retreat frame 6 will be located below the pressure relief cylinder 5. According to the above, when the driving piston 120 continues to move upward, it will be placed at the upper detection point 21, thereby causing the coil 23 and the magnetic block 24 to be magnetically attracted. In this process, the driving piston 120 moves downward to input the airflow in the regulating box 20 into the light box 2, and the combined Figure 3 It can be seen that when the air flow pressure in the liquid storage chamber 200 increases, the pressure relief piston 501 located below the pressure relief hole 500 is affected by the air flow and further pushes the pressure relief push column 503 downward through the pressure relief piston 501. Since the re-pressure withdrawal frame 6 is located below the pressure relief push column 503 at this time, the pressure relief push column 503 will force the re-pressure withdrawal frame 6 to pull the reset push rod 14 to move to the left, thereby causing the cleaning push block 7 to push the baffle plate 202 upward on the inclined surface, and the air relief hole 201 is connected to the outside, causing the air flow in the liquid storage chamber 200 to leak out quickly. When the reset push rod 14 moves to the left, the reset push spring 140 is compressed. When the air flow in the liquid storage chamber 200 leaks out, the reset push rod 14 is pushed by the elastic force of the reset push spring 140 to hit the inner side of the supporting lamp pole 1, thereby causing the supporting lamp pole 1 to make a sound, so that outsiders can detect it based on the sound.

[0052] As the driving piston 120 moves downward, it will be placed at the lower detection point 22 again, causing magnetic repulsion between the coil 23 and the magnet 24, forcing the driving piston 120 to reciprocate up and down. Combined with the up and down movement of the driving piston 120, the air flow is continuously input into the liquid storage chamber 200, which causes the reset push rod 14 to continuously hit the inner side of the supporting lamp pole 1, thereby emitting a continuous sound.

Claims

1. A LED street lamp for smart city, characterized in that: include: A supporting lamp pole (1) is provided with a supporting cantilever (4) on the top, a light box (2) is fixedly installed on the end of the supporting cantilever (4), and a lamp bead (15) is fixedly installed on the bottom of the light box (2); A liquid storage cavity (200) is provided inside the light box (2), and the liquid storage cavity (200) is filled with a conductive liquid; A PLC controller (3), located at the end of the light box (2), and used for electrically controlling the entire machine; A power supply column (18) is fixed inside the light box (2); The regulating box (20) is fixed inside the supporting lamp pole (1), and a driving piston (120) is mounted inside the regulating box (20), and the bottom of the driving piston (120) is movably connected to the supporting cantilever (4) via the driving pull rod (12); An exhaust pipe (25) is fixed to a side of the regulating box (20); A magnetic block (24) is fixed to the bottom of the driving piston (120), a coil (23) located below the magnetic block (24) is fixedly installed inside the regulating box (20), and a lower detection point (22) is fixedly installed on the bottom of the inner side of the regulating box (20); A reset push rod (14) is movably mounted at the bottom of the supporting cantilever (4); a reset push spring (140) is connected between the reset push rod (14) and the supporting cantilever (4); a reset stopper (11) is fixedly mounted on the inner side of the supporting lamp pole (1); and a cleaning push block (7) located below the lamp box (2) is fixedly mounted on the side of the reset push rod (14); An air equalizing plate (16) is fixedly mounted on one end of the exhaust pipe (25), an air intake pipe (10) is fixedly mounted on the side of the regulating box (20), and the end of the air intake pipe (10) is connected to the outside after passing through the air filter drying box (9); A liquid storage tank (8) is fixedly mounted on the top of the regulating box (20), an electromagnetic on-off valve (19) is fixedly mounted on the outside of the liquid storage tank (8), and liquid level detection contacts (17) are symmetrically mounted on both sides of the inside of the light box (2), and the liquid level detection contacts (17) are electrically connected to the PLC controller (3).

2. The LED street light for smart city according to claim 1, characterized in that: The cross-sectional shape of the reset stopper (11) is a right triangle.

3. The LED street light for smart city according to claim 1, characterized in that: A pressure relief cylinder (5) is fixedly installed in the middle of the light box (2), and a pressure relief hole (500) is opened on the side of the pressure relief cylinder (5). A pressure relief piston (501) is movably installed inside the pressure relief cylinder (5), and a pressure limiting spring (502) is connected between the pressure relief piston (501) and the pressure relief cylinder (5). A pressure relief push column (503) is fixedly installed at the bottom of the pressure relief piston (501).

4. The LED street light for smart city according to claim 3, characterized in that: A liquid storage cylinder (121) is fixedly mounted on the top of the driving piston (120), and a liquid discharge head (800) is arranged at the bottom of the liquid storage box (8).

5. The LED street light for smart city according to claim 4, characterized in that: An upper detection point (21) is fixedly installed on the top of the inner side of the adjustment box (20), a limited motion slide (13) is installed on the end of the support cantilever (4), and the limited motion slide (13) and the reset push rod (14) are fixedly connected, the limited motion slide (13) and the driving pull rod (12) are movably connected, a re-pressure retreat frame (6) is fixedly installed on the end of the reset push rod (14), and a baffle plate (202) is movably installed on the end of the light box (2), and the baffle plate (202) is connected to the support cantilever (4) according to a tension spring, and the baffle plate (202) is affected by the tension spring to block the air leakage hole (201) opened at the end of the light box (2).

Images