Active heat dissipation street lamp distribution cabinet
By introducing active heat dissipation from external air and vacuum interlayer insulation, combined with solar power generation, the heat dissipation and noise pollution problems of street light distribution cabinets in high-temperature environments are solved, achieving efficient heat dissipation and insulation effects, while improving the power generation efficiency of solar panels.
Patent Information
- Application Number
- CN202610884159.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-18
- Publication Date
- 2026-08-25
AI Technical Summary
Existing street light distribution cabinets have poor heat dissipation in high-temperature environments, which can easily lead to the aging of electronic components and cause serious noise pollution. Traditional heat dissipation methods are inefficient and easily introduce dust, affecting power generation efficiency and increasing maintenance costs.
External air is introduced by an induced draft fan, and active heat dissipation is achieved through Tesla valve flow channels and heat dissipation holes. Combined with vacuum jacket insulation and peristaltic pump air extraction to create a vacuum state, noise pollution is reduced, and solar panels are used to generate electricity. Dust is removed to improve power generation efficiency.
It achieves efficient active heat dissipation and insulation, reduces noise pollution, improves the power generation efficiency of solar panels, reduces the frequency of manual maintenance, and ensures the stability and safety of the internal environment of the distribution cabinet.
Smart Images
Figure CN122638870A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power distribution cabinet technology, specifically an active heat dissipation street light power distribution cabinet. Background Technology
[0002] Street light distribution cabinets are usually installed on outdoor roadsides and integrate various electrical components for street light control. In high-temperature environments in summer or when street lights are under heavy load, the internal temperature of the distribution cabinet rises sharply, which can easily lead to accelerated aging of electronic components and pose a fire hazard.
[0003] Traditional power distribution cabinets rely mainly on natural ventilation or simple forced exhaust fans for heat dissipation. However, the heat dissipation effect of hot and humid air outside is poor, and dust can easily enter the cabinet, causing secondary pollution. Solar panels are often installed on the top of the power distribution cabinet for auxiliary power supply, which can enable the fan to use clean energy. However, the surface of the solar panels is easily covered by fallen leaves and dust, which affects the power generation efficiency and increases the cost of manual cleaning.
[0004] Many distribution cabinets are installed near residential areas, and the noise pollution generated by the internal contactors, relays and other equipment during operation bothers the surrounding residents. Therefore, there is a need for a street light distribution cabinet that can actively and efficiently dissipate heat and also has heat insulation and noise reduction functions. Summary of the Invention
[0005] The purpose of this invention is to provide an active heat dissipation street light distribution cabinet to solve the problem that existing distribution cabinets lack independent heat dissipation technology.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an active heat dissipation street light distribution cabinet, comprising an outer shell, a top cover, and an inner liner, wherein an outer cabinet door is hinged to the outer shell, the top cover is located on the upper part of the outer shell, an inner cabinet door is hinged to the inner liner, and there is a sandwich between the inner liner and the outer shell. An electrical mounting plate is installed in the inner liner, which divides the inner liner into a front compartment and a rear compartment. An exhaust fan is installed in the front compartment. Several Tesla valve flow channels are vertically opened on the side of the electrical mounting plate facing the rear compartment. Several heat dissipation holes are also opened on the electrical mounting plate. A back plate is attached to the side of the electrical mounting plate facing the rear compartment. The back plate has through holes that coincide with the heat dissipation holes. An air inlet is opened below the back plate, connecting each Tesla valve flow channel. An air outlet pipe is set above the back plate, connecting each Tesla valve flow channel. Each air outlet pipe passes through the inner liner and the outer shell and connects to the inside of the top cover.
[0007] Furthermore, the induced draft fan is installed on the bottom plate of the inner liner. The exhaust port of the induced draft fan penetrates both the inner liner and the outer shell. A filter screen is installed on the outer shell corresponding to the exhaust port. The main shaft of the induced draft fan penetrates the bottom plate of the inner liner, and a driven bevel gear is connected to the main shaft. A cabin enclosure penetrating the bottom plate of the outer shell is installed below the bottom plate of the inner liner. A servo motor is installed in the cabin enclosure. The servo motor is connected to the bottom plate of the inner liner via a bracket. A driving bevel gear is installed on the motor shaft of the servo motor, and the driving bevel gear meshes with the driven bevel gear. The control system controls the rotation of the servo motor. The driving bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the induced draft fan to operate. Air outside the power distribution cabinet is drawn into the inner liner by the induced draft fan, increasing the air pressure in the front compartment. The airflow passes through the heat dissipation holes into the rear compartment. The airflow enters the Tesla valve channel from the air inlet at the bottom of the back panel. After passing through the Tesla valve channel, the airflow flows out from the air outlet pipe at the top of the back panel and enters the top cover. By installing an exhaust fan to introduce outside air into the electrical distribution cabinet, the airflow flows from the front compartment to the rear compartment, dissipating the heat generated by the electrical appliances connected to the electrical mounting plate. The residual heat airflow is then discharged into the top cover through the Tesla valve channel opened inside the electrical mounting plate, thus achieving self-heating of the electrical distribution cabinet.
[0008] Furthermore, several of the aforementioned heat dissipation holes are located at the positions of the raindrop-shaped resistance blocks in the Tesla valve flow channels. The side of the electrical mounting plate facing the rear compartment is wider at the bottom and narrower at the top. The Tesla valve flow channels are deeper at the bottom and shallower at the top. The Tesla valve flow channels are in a conducting state from bottom to top and a flow-blocking state from top to bottom. Airflow flows from bottom to top in the Tesla valve flow channels. As the Tesla valve flow channel grooves become shallower, the flow cross-section decreases, resulting in an increase in airflow velocity and a decrease in air temperature, thereby achieving further heat dissipation for the electrical mounting plate. When the distribution cabinet does not require heat dissipation, the external air flowing into the distribution cabinet from the top cover encounters significant resistance. By setting the Tesla valve flow channels, the heat dissipation airflow is made to flow in one direction, preventing the external environment from affecting the internal temperature of the distribution cabinet in the opposite direction.
[0009] Furthermore, the top of the cover is herringbone shaped, with solar panels installed on both sides of the top. An air vent is formed at the ridge of the top of the cover, and a herringbone-shaped air guide cover is installed above the ridge. The length of the air guide cover is greater than the length of the air vent, and a gap is left between the air guide cover and the top of the cover. The solar panels generate electricity using solar energy, which is stored in a battery and used to power a servo motor for heat dissipation. The cooled airflow flows out from the air vent at the ridge in the top cover. Blocked by the air guide cover, the airflow is directed to both sides of the top cover, blowing over the surface of the solar panels. The air guide cover further utilizes the cooling airflow to remove fallen leaves or dust from the surface of the solar panels, preventing shading and improving the power generation efficiency of the solar panels.
[0010] Furthermore, a sealing ring is provided on the side of the outer cabinet door that contacts the outer shell, and a sealing ring is also provided on the side of the inner cabinet door that contacts the inner liner. The opening direction of the inner cabinet door is opposite to that of the outer cabinet door.
[0011] Furthermore, the inner liner is installed inside the outer shell via a pair of spacers. Both the bottom plate of the inner liner and the bottom plate of the outer shell have wiring grooves, which are connected by the spacers. The streetlight cable enters the distribution cabinet through the wiring grooves and connects to the electrical appliances on the electrical mounting plate.
[0012] Furthermore, an electronically controlled clutch is installed below the inner liner bottom plate. A linkage bevel gear is installed on the input shaft of the electronically controlled clutch, and a peristaltic pump is connected to the output shaft of the electronically controlled clutch. The linkage bevel gear, the electronically controlled clutch, and the peristaltic pump are all located in the engine room enclosure. The linkage bevel gear meshes with the driven bevel gear. The negative pressure end of the peristaltic pump is connected to the interlayer, and the positive pressure end of the peristaltic pump penetrates the cabin enclosure and the outer shell. A filter screen is also installed on the outer shell corresponding to the positive pressure end. After the outer and inner cabinet doors are closed, the interlayer is a sealed space. The control system controls the electronic clutch to connect the input shaft and the output shaft. The driven bevel gear drives the linkage bevel gear to rotate, which in turn drives the peristaltic pump to operate. The peristaltic pump draws air out of the interlayer and discharges it outside the distribution cabinet. The air pressure in the interlayer decreases, forming a near-vacuum state. After the air in the interlayer is drawn out, the temperature of the external environment no longer transfers to the inner liner, achieving self-insulation. At the same time, the operating noise of the connected electrical appliances can only propagate along the inner liner wall and cannot spread to the surroundings, reducing noise pollution and achieving the effect of further controlling the internal temperature of the distribution cabinet.
[0013] Furthermore, a pressure sensor is installed in the interlayer. The pressure sensor detects the air pressure in the interlayer. When the interlayer is close to a vacuum, the electronically controlled clutch is disengaged, and the peristaltic pump stops operating. When the vacuum level in the interlayer decreases, the electronically controlled clutch is re-engaged, and the peristaltic pump is started to pump air.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes an induced draft fan to draw in external air, which flows sequentially through the front compartment, the heat dissipation holes of the electrical mounting plate, the rear compartment, and the Tesla valve flow channel before being discharged, directly cooling the electrical components and achieving active heat dissipation. The Tesla valve flow channel adopts a structure that is deeper at the bottom and shallower at the top. As the airflow rises, the flow cross-section gradually decreases, the flow velocity increases, and the temperature decreases, further enhancing the heat absorption effect on the electrical mounting plate. When the distribution cabinet does not require heat dissipation, the Tesla valve flow channel strongly obstructs the reverse airflow, effectively preventing external hot and humid air or dust from flowing back into the cabinet from the top cover, ensuring the long-term stability of the cabinet's internal environment.
[0015] 2. By installing a peristaltic pump to remove the air sandwiched between the inner liner and the outer shell, the vacuum layer blocks heat conduction and convection, preventing heat from the external environment from reaching the inner liner, thus achieving active insulation. Simultaneously, noise generated by the internal electrical appliances cannot propagate through the air in the vacuum, significantly reducing noise and preventing disturbance to nearby residential areas.
[0016] 3. The solar panels installed on both sides of the top cover convert solar energy into electrical energy and store it in the battery to power the exhaust fan and peristaltic pump. No external power supply is required, making it suitable for decentralized installation scenarios with street light distribution cabinets. The airflow after heat dissipation is discharged from the air outlet of the top cover, guided by the air guide cover and blown over the surface of the solar panel. The originally discarded residual airflow is used to remove fallen leaves, dust and other obstructions on the panel surface, which improves the power generation efficiency of the solar panel and reduces the frequency of manual maintenance. Attached Figure Description
[0017] Figure 1 This is a first schematic diagram of the overall appearance structure of the present invention; Figure 2 This is a second schematic diagram of the overall appearance structure of the present invention; Figure 3 This is a schematic diagram of the top cover portion of the present invention; Figure 4 This is a schematic diagram of the structure of the cabin enclosure portion of the present invention; Figure 5 This is a schematic diagram of the electrical mounting plate of the present invention; Figure 6 This is a schematic diagram of the structure of the back plate of the present invention; Figure 7 This is a schematic diagram of the flow channel of the Tesla valve of the present invention; Figure 8 This is a schematic diagram of the structure of the temporal part of the cabin enclosure of the present invention.
[0018] In the diagram: 1. Outer shell; 2. Outer cabinet door; 3. Top cover; 4. Air vent cover; 5. Pad block; 6. Inner liner; 7. Inner cabinet door; 8. Exhaust fan; 9. Cabin enclosure; 10. Wiring trough; 11. Servo motor; 12. Driving bevel gear; 13. Driven bevel gear; 14. Linkage bevel gear; 15. Electrically controlled clutch; 16. Peristaltic pump; 17. Electrical mounting plate; 18. Back panel; 19. Air inlet; 20. Air outlet duct; 21. Tesla valve flow channel. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] like Figures 1-8 As shown in Embodiment 1 of the present invention: an active heat dissipation street light distribution cabinet includes an outer shell 1, a top cover 3, and an inner liner 6. An outer cabinet door 2 is hinged to the outer shell 1, the top cover 3 is located on the upper part of the outer shell 1, and an inner cabinet door 7 is hinged to the inner liner 6. There is a sandwich between the inner liner 6 and the outer shell 1. A sealing ring is provided on the side of the outer cabinet door 2 that contacts the outer shell 1, and a sealing ring is also provided on the side of the inner cabinet door 7 that contacts the inner liner 6. The opening direction of the inner cabinet door 7 is opposite to the opening direction of the outer cabinet door 2. The inner liner 6 is installed inside the outer shell 1 by a pair of pads 5. Wiring grooves 10 are provided on both the bottom plate of the inner liner 6 and the bottom plate of the outer shell 1. The two wiring grooves 10 are connected by the pads 5. The street light cable enters the distribution cabinet through the wiring grooves 10 provided on the bottom plate of the outer shell 1 and the bottom plate of the inner liner 6. The two wiring grooves 10 are connected to each other through the internal channel of the pads 5. The cable is connected to various electrical appliances through the wiring grooves 10, and then the gap between the cable and the wiring groove 10 is sealed with waterproof material.
[0021] An electrical mounting plate 17 is installed in the inner liner 6, which separates the inner liner 6 into a front compartment and a rear compartment. An exhaust fan 8 is installed in the front compartment and is mounted on the bottom plate of the inner liner 6. The exhaust port of the exhaust fan 8 passes through the inner liner 6 and the outer shell 1. A filter screen is installed on the outer shell 1 at the exhaust port. The main shaft of the exhaust fan 8 passes through the bottom plate of the inner liner 6 and is connected to a driven bevel gear 13. A cabin enclosure 9 is installed below the bottom plate of the inner liner 6 and passes through the bottom plate of the outer shell 1. A servo motor 11 is installed in the cabin enclosure 9 and is connected to the bottom plate of the inner liner 6 by a bracket. A driving bevel gear 12 is installed on the motor shaft of the servo motor 11 and meshes with the driven bevel gear 13. When the weather turns hot in summer or the streetlights are under heavy load, the internal temperature of the distribution cabinet rises. The control system starts the servo motor 11, which drives the driven bevel gear 13 to rotate through the active bevel gear 12, thereby rotating the main shaft of the induced draft fan 8. A filter screen prevents the induced draft fan 8 from sucking in debris. After the induced draft fan 8 starts running, the air outside the distribution cabinet is drawn into the front compartment of the inner liner 6, increasing the air pressure in the front compartment. Under pressure, the air enters the rear compartment through several heat dissipation holes on the electrical mounting plate 17, and the heat generated by various electrical appliances is carried away by the high-speed airflow.
[0022] Five Tesla valve flow channels 21 are vertically opened on the side of the electrical mounting plate 17 facing the rear compartment. Several heat dissipation holes are also opened on the electrical mounting plate 17. A back plate 18 is attached to the side of the electrical mounting plate 17 facing the rear compartment. A through hole overlapping the heat dissipation holes is opened on the back plate 18. An air inlet 19 connecting each Tesla valve flow channel 21 is opened below the back plate 18. An air outlet duct 20 connecting each Tesla valve flow channel 21 is set above the back plate 18. Each air outlet duct 20 passes through the inner liner 6 and the outer shell 1 and connects to the inside of the top cover 3. Several heat dissipation holes are opened at the position of the raindrop-shaped block of the Tesla valve flow channel 21. The side of the electrical mounting plate 17 facing the rear compartment is wider at the bottom and narrower at the top. The Tesla valve flow channel 21 is deeper at the bottom and shallower at the top. The Tesla valve flow channel 21 is in a conducting state from bottom to top and in a blocking state from top to bottom. After passing through the heat dissipation holes, the airflow does not exit directly but continues to enter the vertically opened Tesla valve channels 21 through the air inlet 19 below the back panel 18. Each Tesla valve channel 21 is open from bottom to top. Because the channel cross-section is deeper at the bottom and shallower at the top, the flow cross-section gradually decreases. As the airflow rises along the channel, the flow velocity continuously increases. According to Bernoulli's principle, the kinetic energy of the airflow increases while its internal energy decreases. Therefore, the temperature of the airflow decreases. When the airflow passes through the back of the electrical mounting plate 17, it can further absorb the heat conducted by the plate, enhancing the heat dissipation effect.
[0023] When the power distribution cabinet does not require heat dissipation or the external environment is harsh, the Tesla valve flow channel 21 is in a resistant state from top to bottom. The raindrop-shaped block in the flow channel causes strong turbulence and pressure loss in the reverse flow, preventing external air from flowing back into the power distribution cabinet from the air outlet slot of the top cover 3, avoiding the entry of moisture or dust. External air cannot flow back into the rear compartment from the air outlet 20, which also further prevents the temperature inside the cabinet from rising, ensuring the stability of the internal environment of the power distribution cabinet.
[0024] The top of the top cover 3 is V-shaped, and solar panels (not shown in the figure) are installed on both sides of the top of the top cover 3. An air vent is formed at the ridge of the top of the top cover 3, and a V-shaped air guide cover 4 is installed above the ridge. The length of the air guide cover 4 is greater than the length of the air vent, and a gap is left between the air guide cover 4 and the top of the top cover 3. The airflow finally flows into the interior of the top cover 3 from the air outlet duct 20 on the upper part of the back panel 18, and then exits from the air vent. After being blocked by the air guide cover 4, it is split to both sides of the top cover 3, blowing over the surface of the solar panels installed on both sides of the top cover 3. The exhaust airflow is used to blow away fallen leaves and dust on the solar panels, improving the power generation efficiency of the solar panels. The electrical energy generated by the solar panels is stored in a battery and used to power electrical equipment such as the servo motor 11, achieving energy self-sufficiency.
[0025] Embodiment 2 of the present invention: Based on Embodiment 1, a mechanism is added that can evacuate the interlayer to a vacuum state, such as... Figure 4 and Figure 8As shown, due to the extremely low thermal conductivity and convective heat transfer capacity of the vacuum layer, heat from the external environment cannot be transferred to the inner liner 6 through the outer shell 1, thus achieving active heat insulation in this embodiment. At the same time, the operating noise generated by the connected electrical appliances cannot propagate in the vacuum and can only be transferred downwards to the ground along the solid structure of the inner liner 6, reducing noise pollution radiated in all directions and avoiding disturbing the residential areas near the installation location of the street light distribution cabinet.
[0026] The specific contents are as follows: a pressure sensor is installed in the interlayer, an electronically controlled clutch 15 is installed below the bottom plate of the inner liner 6, a linkage bevel gear 14 is installed on the input shaft of the electronically controlled clutch 15, and a peristaltic pump 16 is connected to the output shaft of the electronically controlled clutch 15. The linkage bevel gear 14, the electronically controlled clutch 15 and the peristaltic pump 16 are all located in the cabin enclosure 9. The linkage bevel gear 14 meshes with the driven bevel gear 13. The negative pressure end of the peristaltic pump 16 is connected to the interlayer, and the positive pressure end of the peristaltic pump 16 penetrates the cabin enclosure 9 and the outer shell 1. A filter screen is also installed on the outer shell 1 corresponding to the positive pressure end. Sealing rings are installed between the outer cabinet door 2 and the outer shell 1, and between the inner cabinet door 7 and the inner liner 6. When both cabinet doors are closed, the interlayer becomes a sealed chamber. The control system activates the electronically controlled clutch 15, engaging its input and output shafts. Simultaneously, the driven bevel gear 13 drives the linkage bevel gear 14 to rotate, thereby driving the peristaltic pump 16. The peristaltic pump 16 continuously pumps air out of the interlayer, causing the interlayer pressure to drop rapidly until it approaches a vacuum. A pressure sensor monitors the interlayer pressure in real time. When the pressure drops to a set threshold, the control system disengages the electronically controlled clutch 15, and the peristaltic pump 16 stops operating to save energy. If the interlayer vacuum decreases due to aging of the sealing rings or material venting, the sensor will trigger the electronically controlled clutch 15 again, restarting the peristaltic pump 16 for replenishment pumping, ensuring long-term heat insulation.
[0027] The working principle of this invention is as follows: the street light cable enters the power distribution cabinet through the wiring groove 10 opened on the bottom plate of the outer shell 1 and the bottom plate of the inner liner 6. The two wiring grooves 10 are connected to each other through the internal channel of the pad block 5. The cable is connected to various electrical appliances through the wiring groove 10. Then, the gap between the cable and the wiring groove 10 is sealed with waterproof material.
[0028] When the weather turns hot in summer or the streetlights are under heavy load, the internal temperature of the distribution cabinet rises. The control system starts the servo motor 11, which drives the driven bevel gear 13 to rotate through the active bevel gear 12, thereby rotating the main shaft of the induced draft fan 8. A filter screen prevents the induced draft fan 8 from sucking in debris. After the induced draft fan 8 starts running, the air outside the distribution cabinet is drawn into the front compartment of the inner liner 6, increasing the air pressure in the front compartment. Under pressure, the air enters the rear compartment through several heat dissipation holes on the electrical mounting plate 17, and the heat generated by various electrical appliances is carried away by the high-speed airflow.
[0029] After passing through the heat dissipation holes, the airflow does not exit directly but continues to enter the vertically opened Tesla valve channels 21 through the air inlet 19 below the back panel 18. Each Tesla valve channel 21 is open from bottom to top. Because the channel cross-section is deeper at the bottom and shallower at the top, the flow cross-section gradually decreases. As the airflow rises along the channel, the flow velocity continuously increases. According to Bernoulli's principle, the kinetic energy of the airflow increases while its internal energy decreases. Therefore, the temperature of the airflow decreases. When the airflow passes through the back of the electrical mounting plate 17, it can further absorb the heat conducted by the plate, enhancing the heat dissipation effect.
[0030] When the power distribution cabinet does not require heat dissipation or the external environment is harsh, the Tesla valve flow channel 21 is in a resistant state from top to bottom. The raindrop-shaped block in the flow channel causes strong turbulence and pressure loss in the reverse flow, preventing external air from flowing back into the power distribution cabinet from the air outlet slot of the top cover 3, avoiding the entry of moisture or dust. External air cannot flow back into the rear compartment from the air outlet 20, which also further prevents the temperature inside the cabinet from rising, ensuring the stability of the internal environment of the power distribution cabinet.
[0031] The airflow ultimately flows into the top cover 3 from the air outlet duct 20 at the top of the back panel 18, and then exits from the air outlet slot. After being blocked by the air guide cover 4, it is split to both sides of the top cover 3, blowing over the surface of the solar panels installed on both sides of the top cover 3. The exhaust air is used to blow away fallen leaves and dust on the solar panels, improving the power generation efficiency of the solar panels. The electrical energy generated by the solar panels is stored in the battery and used to power electrical equipment such as the servo motor 11, achieving energy self-sufficiency.
[0032] Sealing rings are provided between the outer cabinet door 2 and the outer shell 1, and between the inner cabinet door 7 and the inner liner 6 of the distribution cabinet. When both cabinet doors are closed, the interlayer becomes a sealed chamber. The control system activates the electronically controlled clutch 15, engaging its input and output shafts. The driven bevel gear 13 simultaneously drives the linkage bevel gear 14 to rotate, thereby driving the peristaltic pump 16 to operate. The peristaltic pump 16 continuously extracts air from the interlayer, causing the interlayer air pressure to drop rapidly, eventually approaching a vacuum state. The vacuum layer has extremely low thermal conductivity and convective heat transfer capacity, and heat from the external environment cannot be transferred to the inner liner 6 through the outer shell 1. This embodiment achieves active heat insulation. At the same time, the operating noise generated by the connected electrical appliances cannot propagate in the vacuum and can only be transmitted downwards along the solid structure of the inner liner 6 to the ground, reducing noise pollution radiated in all directions and avoiding disturbing the residential areas near the street light distribution cabinet installation location. The air pressure sensor monitors the interlayer pressure in real time. When the pressure drops to a set threshold, the control system disengages the electronically controlled clutch 15, and the peristaltic pump 16 stops operating to save energy. If the vacuum level of the interlayer decreases due to reasons such as aging of the sealing ring or material venting, the sensor will trigger the electronically controlled clutch 15 to engage again, restarting the peristaltic pump 16 to perform replenishment pumping, ensuring long-term heat insulation effect.
[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A street light distribution cabinet with active heat dissipation, characterized in that: It includes an outer shell (1), a top cover (3) and an inner liner (6). An outer cabinet door (2) is hinged to the outer shell (1), the top cover (3) is located on the upper part of the outer shell (1), and an inner cabinet door (7) is hinged to the inner liner (6). There is a sandwich between the inner liner (6) and the outer shell (1). An electrical mounting plate (17) is installed in the inner liner (6). The electrical mounting plate (17) divides the inner liner (6) into a front compartment and a rear compartment. An exhaust fan (8) is installed in the front compartment. Several Tesla valve flow channels (21) are vertically opened on the side of the electrical mounting plate (17) facing the rear compartment. Several heat dissipation holes that run through the front and rear are also opened on the electrical mounting plate (17). A back plate (18) is attached to the side of the electrical mounting plate (17) located in the rear compartment. A through hole that coincides with the heat dissipation hole is opened on the back plate (18). An air inlet (19) connecting each Tesla valve flow channel (21) is opened below the back plate (18). An air outlet pipe (20) connecting each Tesla valve flow channel (21) is provided above the back plate (18). Each air outlet pipe (20) passes through the inner liner (6) and the outer shell (1) and is connected to the inside of the top cover (3).
2. The street light distribution cabinet with active heat dissipation according to claim 1, characterized in that: The blower (8) is installed on the bottom plate of the inner liner (6). The exhaust port of the blower (8) passes through the inner liner (6) and the outer shell (1). The outer shell (1) is provided with a filter screen at the exhaust port. The main shaft of the blower (8) passes through the bottom plate of the inner liner (6). A driven bevel gear (13) is connected to the main shaft. A cabin enclosure (9) that passes through the bottom plate of the outer shell (1) is provided below the bottom plate of the inner liner (6). A servo motor (11) is installed in the cabin enclosure (9). The servo motor (11) is connected to the bottom plate of the inner liner (6) through a bracket. An active bevel gear (12) is installed on the motor shaft of the servo motor (11). The active bevel gear (12) meshes with the driven bevel gear (13).
3. The street light distribution cabinet with active heat dissipation according to claim 1, characterized in that: Several of the aforementioned heat dissipation holes are opened at the position of the raindrop-shaped block of the Tesla valve flow channel (21). The side of the electrical mounting plate (17) facing the rear compartment is wider at the bottom and narrower at the top. The Tesla valve flow channel (21) is deeper at the bottom and shallower at the top. The Tesla valve flow channel (21) is in a conducting state from bottom to top and in a flow-blocking state from top to bottom.
4. The street light distribution cabinet with active heat dissipation according to claim 3, characterized in that: The top of the top cover (3) is shaped like a herringbone. Solar panels are installed on both sides of the top of the top cover (3). An air outlet groove is opened at the ridge of the top of the top cover (3). An air guide cover (4) with a herringbone shape is also installed above the ridge of the top cover (3). The length of the air guide cover (4) is greater than the length of the air outlet groove. There is a gap between the air guide cover (4) and the top of the top cover (3).
5. The street light distribution cabinet with active heat dissipation according to claim 2, characterized in that: A sealing ring is provided on the side of the outer cabinet door (2) that contacts the outer shell (1), and a sealing ring is also provided on the side of the inner cabinet door (7) that contacts the inner liner (6). The opening direction of the inner cabinet door (7) is opposite to the opening direction of the outer cabinet door (2).
6. The street light distribution cabinet with active heat dissipation according to claim 1, characterized in that: The inner liner (6) is installed inside the outer shell (1) by a pair of pads (5). Both the bottom plate of the inner liner (6) and the bottom plate of the outer shell (1) are provided with wiring grooves (10), and the two wiring grooves (10) are connected by the pads (5).
7. A street light distribution cabinet with active heat dissipation according to any one of claims 2-6, characterized in that: An electronically controlled clutch (15) is installed below the bottom plate of the inner liner (6). A linkage bevel gear (14) is installed on the input shaft of the electronically controlled clutch (15). A peristaltic pump (16) is connected to the output shaft of the electronically controlled clutch (15). The linkage bevel gear (14), the electronically controlled clutch (15) and the peristaltic pump (16) are all located in the cabin enclosure (9). The linkage bevel gear (14) meshes with the driven bevel gear (13), the negative pressure end of the peristaltic pump (16) is connected to the interlayer, the positive pressure end of the peristaltic pump (16) penetrates the cabin enclosure (9) and the outer shell (1), and the outer shell (1) is also provided with a filter screen corresponding to the positive pressure end.
8. The street light distribution cabinet with active heat dissipation according to claim 7, characterized in that: A pressure sensor is installed in the interlayer.