LED lamp holder for smart city

Abstract

The LED lamp holder comprises a first shell, a second shell, a fixed part, a rotating pipe, a first translation pipe, a second translation pipe and an LED light-emitting unit, an image acquisition unit is installed at the rotating pipe, and an air quality sensor is installed at the second translation pipe. According to the lamp holder, the internal structure is compact, and due to the fact that the lamp holder is provided with the fan unit, the lamp holder has the good active heat dissipation effect. The image acquisition unit can monitor the environment and the air quality sensor, and can clean the sensor. And heat dissipation can be enhanced when needed, so that the heat dissipation effect of the lamp holder is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of LED lamp holders, and more specifically, to an LED lamp holder for a smart city. Background Art

[0002] As the global energy crisis intensifies and environmental awareness increases, people are beginning to seek more energy-saving and environmentally friendly lighting methods. LED lamp heads, with their high efficiency, energy saving and long life, have become an ideal choice to replace traditional lighting products, providing a more comfortable and convenient lighting environment for people's lives.

[0003] The existing LED lamp housing has a single function, which is only used to install the LED lighting unit, provide a stable installation platform for the LED lighting unit, and ensure that the lighting unit can work normally. A few lamp housings have the function of installing batteries. In addition, some high-power LED lamp holders, due to their high brightness and high energy consumption characteristics, will generate a lot of heat during operation. In order to ensure that the heat can be dissipated in time and prevent the LED lamp holder from being damaged or performance degradation due to overheating, the lamp housing can usually only be made very large so that there is a large space inside the lamp housing. This practice of increasing the size of the lamp housing will also bring some adverse effects, such as occupying more installation space, increasing the overall weight and cost, etc. In order to pursue the lightness of the product, some LED lamp holders will choose to make a lamp housing with a smaller volume and a more compact internal structure. However, due to the limitation of the internal space, the heat dissipation effect of the lamp housing is often poor, which can easily cause the LED lamp holder to overheat during operation, thereby affecting its service life and performance stability. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provide an LED lamp holder for a smart city.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: an LED lamp head, comprising a first shell, a second shell, a fixing part, a rotating tube, a first translation tube, a second translation tube and an LED light-emitting unit, the first shell and the second shell are fixedly connected, the fixing part comprises a fixing plate and a mounting tube fixedly connected to the fixing plate, the fixing plate is fixedly connected to the first shell; a first mounting seat and a second mounting seat are installed in the first shell, a first motor is installed at the first mounting seat, an electric telescopic rod is installed at the second mounting seat, the second shell has an installation inner cavity, a first installation channel and a second installation channel, the rotating tube is installed in the first installation channel and driven to rotate by the first motor, and an image acquisition unit is installed at the rotating tube; the second translation tube is inserted into the first translation tube, the first translation tube is inserted into the second installation channel, the end of the second translation tube is connected to the movable end of the electric telescopic rod, and an air quality sensor is installed at the second translation tube.

[0006] Furthermore, an internal temperature sensor is installed in the installation cavity.

[0007] Further, the first shell includes a rectangular frame-shaped surrounding shell and a first end plate fixedly connected to the surrounding shell; the second shell includes a top plate, a bottom plate, a second end plate, a first inner arc panel, a first outer arc panel, a second inner arc panel and a second outer arc panel, the first inner arc panel is fixedly connected to the top plate, the bottom plate and the second end plate, the first outer arc panel is fixedly connected to the top plate and the bottom plate, the second inner arc panel is fixedly connected to the top plate, the bottom plate and the second end plate, the second outer arc panel is fixedly connected to the top plate and the bottom plate, the bottom plate has a rectangular mounting opening, the LED light-emitting unit is installed at the rectangular mounting opening, the first outer arc panel and the first inner arc panel surround to form a first mounting channel, the second outer arc panel and the second inner arc panel surround to form the second mounting channel; the first end plate is fixedly connected to the top plate, the first outer arc panel and the second outer arc panel; the bottom plate has a first through hole array and a second through hole array, and the rectangular mounting opening is located between the first through hole array and the second through hole array.

[0008] Furthermore, the first shell includes a rectangular frame-shaped enclosure with rounded corners.

[0009] Further, the first inner arc panel has a first strip-shaped inner through hole, the first outer arc panel has a first strip-shaped outer through hole, the second outer arc panel has a second strip-shaped outer through hole, and the second inner arc panel has a second strip-shaped inner through hole; the rotating tube has a third strip-shaped through hole and a fourth strip-shaped through hole, the rotating tube is connected to the first mounting plate through a first connecting rod, the second translation tube is connected to the second mounting plate through a second connecting rod, one end of the second translation tube is connected to a closed plate, and the second translation tube has an open portion ; A shielding portion is also installed in the second installation channel, and the shielding portion includes a cylindrical translation block and a curved baffle fixedly connected to the translation block. A second motor is installed at the second mounting seat, and the second motor drives a screw rod. The translation block has a threaded hole that cooperates with the screw rod and a through hole passed by the electric telescopic rod. The curved baffle can be inserted between the first translation tube and the second translation tube. An air outlet nozzle connected to the internal space of the rotating tube is installed at the end of the rotating tube, and the first inner arc panel is connected to the fan unit through a third connecting rod.

[0010] Furthermore, the second mounting plate faces the open portion.

[0011] Furthermore, a valve is installed at the air outlet nozzle. Preferably, the valve is an electrically controlled valve.

[0012] Furthermore, the LED street lamp housing can be in a normal state, a cleaning state and a circulation state. In the normal state, the first inner through hole is blocked by the rotating tube, the first translation tube is retracted into the second installation channel, the second translation tube is retracted into the first translation tube, and the second outer through hole and the second inner through hole are both blocked by the first translation tube; in the cleaning state, the fourth through hole faces the first inner through hole, the electric telescopic rod is in its longest state, the translation block closes one end of the first translation tube away from the closing plate, and the fan unit is turned on; in the circulation state, the third through hole faces the first inner through hole, the fourth through hole faces the first outer through hole, the electric telescopic rod is in its longest state, the arc baffle blocks the second outer through hole, and the fan unit is turned on.

[0013] Furthermore, in the cleaning state, the air outlet nozzle can be aimed at the open portion to blow air.

[0014] The wind blown out can clean the debris at the sensor.

[0015] Furthermore, an ambient temperature sensor and an ambient humidity sensor are also installed at the second mounting plate; the end of the rotating tube has a mounting bevel, and the image acquisition unit is installed at the mounting bevel.

[0016] Furthermore, the inner side of the second installation channel has a first limiting slide groove, the outer side of the first translation tube has a first limiting slide block that cooperates with the first limiting slide groove, the inner side of the first translation tube has a second limiting slide groove, and the outer side of the second translation tube has a second limiting slide block that cooperates with the second limiting slide groove.

[0017] Furthermore, the electric telescopic rod is a multi-stage electric telescopic rod.

[0018] Furthermore, one end of the first limiting sliding groove close to the closing plate is closed, and one end of the second limiting sliding groove close to the closing plate is closed.

[0019] Thereby, the first translation tube is prevented from falling off from the second installation channel, and the second translation tube is prevented from falling off from the first translation tube.

[0020] Furthermore, a sealing gasket is provided at the closing plate.

[0021] Thereby, the sealing ability of the closing plate to the end of the second installation channel is increased.

[0022] Furthermore, the outer side of the second translation tube has an outer groove, and the arc baffle can be located in the outer groove.

[0023] Thus, the outer groove provides an accommodation space for the arc-surface baffle, thereby making the installation between the first translation tube and the second translation tube more compact.

[0024] Furthermore, the second translation tube is provided with a filter unit, and the electric telescopic rod passes through the filter unit.

[0025] This prevents debris from entering the first translation tube.

[0026] Furthermore, the first rotating tube includes a tube body and an end cover fixedly connected to the tube body, and the first motor is used to drive the end cover to rotate.

[0027] In some embodiments, the motor shaft of the first motor is connected to the end cap.

[0028] In other embodiments, the motor shaft of the first motor is connected to the end cover via a transmission mechanism.

[0029] Furthermore, the fixing portion also includes a rectangular frame-shaped insertion portion fixedly connected to the fixing plate and capable of being inserted into the surrounding shell, the mounting tube has a locking bolt, reinforcing ribs are connected between the fixing plate and the mounting tube, and the fixing plate and the second shell are fixedly connected by bolts.

[0030] Therefore, the fixed installation between the fixing portion and the first shell is more stable.

[0031] Furthermore, a battery is installed in the rotating tube.

[0032] The rotating tube makes it convenient to install the battery.

[0033] Beneficial effects:

[0034] 1. The lamp holder of the present application has a compact internal structure, but due to the fan unit, the lamp holder has a good active heat dissipation effect.

[0035] 2. The lamp head of the present application is equipped with an image acquisition unit, which can monitor the environment and the air quality sensor, and can clean the sensor.

[0036] 3. The lamp holder of the present application has the function of enhancing heat dissipation, and can perform enhanced heat dissipation when needed, thereby enhancing the heat dissipation effect of the lamp holder.

[0037] 4. The lamp holder of the present application has a rotating tube which facilitates installation of batteries, and the batteries can be kept at a suitable working temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the normal state;

[0039] Figure 2 This is another perspective diagram of the normal state;

[0040] Figure 3 It is a schematic diagram of the cleaning state;

[0041] Figure 4 It is a schematic diagram of another perspective of the cleaning state;

[0042] Figure 5 It is a schematic diagram of the circulation state;

[0043] Figure 6 This is a schematic diagram of the circulation state from another perspective;

[0044] Figure 7 A first-person perspective diagram of component separation;

[0045] Figure 8 This is an enlarged view of area A;

[0046] Fig. 9 This is an enlarged view of area B;

[0047] Fig.10 This is an enlarged view of area C;

[0048] Fig.11 A second perspective diagram for separating components;

[0049] Fig.12 This is an enlarged view of area D;

[0050] Fig.13 This is an enlarged view of area E;

[0051] Fig.14 This is an enlarged view of area F;

[0052] Fig.15 A third-view schematic diagram of component separation;

[0053] in Figure 2-6 For the sake of clarity, the fixing portion and the first shell are separated.

[0054] Description of reference numerals: first shell 1; surrounding shell 1.1; first end plate 1.2; second shell 2; top plate 2.1; bottom plate 2.2; first through hole array 2.2.1; second through hole array 2.2.2; first inner arc panel 2.3; first inner through hole 2.3.1; first outer arc panel 2.4; first outer through hole 2.4.1; second inner arc panel 2.5; second inner through hole 2.5.1; second outer arc panel 2.6; second outer through hole 2.6.1; second end plate 2.7; third connecting rod 2.8; first limiting slide groove 2.9; fixing part 3; fixing plate 3.1; mounting tube 3.2; inserting part 3.3; locking bolt 3.4; reinforcing rib 3.5; rotating tube 4; third through hole 4.1; Fourth through hole 4.2; first connecting rod 4.3; first mounting plate 4.4; air outlet nozzle 4.5; mounting bevel 4.6; tube body 4.7; end cover 4.8; first translation tube 5; first limit slide block 5.1; second limit slide groove 5.2; second translation tube 6; second mounting plate 6.1; closing plate 6.2; open portion 6.3; second limit slide block 6.4; outer groove 6.5; filter unit 6.6; LED light-emitting unit 7; first mounting seat 8; second mounting seat 9; electric telescopic rod 9.1; screw rod 9.2; image acquisition unit 10; air quality sensor 11; translation block 12.1; curved baffle plate 12.2; threaded hole 12.3; through hole 12.4; fan unit 13. DETAILED DESCRIPTION

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0056] The present invention provides an LED lamp holder for smart cities as shown in the figure, comprising a first shell 1, a second shell 2, a fixing part 3, a rotating tube 4, a first translation tube 5, a second translation tube 6 and an LED light-emitting unit 7, wherein the first shell 1 and the second shell 2 are fixedly connected, the fixing part 3 comprises a fixing plate 3.1 and a mounting tube 3.2 fixedly connected to the fixing plate 3.1, and the fixing plate 3.1 is fixedly connected to the first shell 1; a first mounting seat 8 and a second mounting seat 9 are installed in the first shell 1, a first motor is installed at the first mounting seat 8, and an electric telescopic rod 9.1 is installed at the second mounting seat 9; the second shell 2 has an installation inner cavity, a first installation channel and a second installation channel, the rotating tube 4 is installed in the first installation channel and driven to rotate by the first motor, and an image acquisition unit 10 is installed at the rotating tube 4; the second translation tube 6 is inserted into the first translation tube 5, the first translation tube 5 is inserted into the second installation channel, the end of the second translation tube 6 is connected to the movable end of the electric telescopic rod 9.1, and an air quality sensor 11 is installed at the second translation tube 6. An internal temperature sensor is installed in the installation cavity. The first shell 1 includes a rectangular frame-shaped enclosure 1.1 and a first end plate 1.2 fixedly connected to the enclosure 1.1; the second shell 2 includes a top plate 2.1, a bottom plate 2.2, a second end plate 2.7, a first inner arc panel 2.3, a first outer arc panel 2.4, a second inner arc panel 2.5 and a second outer arc panel 2.6, the first inner arc panel 2.3 is fixedly connected to the top plate 2.1, the bottom plate 2.2 and the second end plate 2.7, the first outer arc panel 2.4 is fixedly connected to the top plate 2.1 and the bottom plate 2.2, the second inner arc panel 2.5 is fixedly connected to the top plate 2.1, the bottom plate 2.2 and the second end plate 2.7, the second outer arc panel 2.6 is fixedly connected to the top plate 2.1, the bottom plate 2.2 and the second end plate 2.7 The plate 2.1 and the base plate 2.2 are fixedly connected, the base plate 2.2 has a rectangular mounting opening, the LED light-emitting unit is installed at the rectangular mounting opening, the first outer arc panel 2.4 and the first inner arc panel 2.3 surround to form a first mounting channel, the second outer arc panel 2.6 and the second inner arc panel 2.5 surround to form the second mounting channel; the first end plate 1.2 is fixedly connected to the top plate 2.1, the first outer arc panel 2.4 and the second outer arc panel 2.6; the base plate 2.2 has a first through hole array 2.2.1 and a second through hole array 2.2.2, the rectangular mounting opening is located between the first through hole array 2.2.1 and the second through hole array 2.2.2.

[0057] The first inner arc panel 2.3 has a first inner through hole 2.3.1 in the shape of a strip, the first outer arc panel 2.4 has a first outer through hole 2.4.1 in the shape of a strip, the second outer arc panel 2.6 has a second outer through hole 2.6.1 in the shape of a strip, and the second inner arc panel 2.5 has a second inner through hole 2.5.1 in the shape of a strip; the rotating tube 4 has a third through hole 4.1 in the shape of a strip and a fourth through hole 4.2 in the shape of a strip, the rotating tube 4 is connected to a first mounting plate 4.4 via a first connecting rod 4.3, the second translation tube 6 is connected to a second mounting plate 6.1 via a second connecting rod, A closing plate 6.2 is connected to one end of the second translation tube 6, and the second translation tube 6 has an open portion 6.3; a shielding portion is also installed in the second installation channel, and the shielding portion includes a cylindrical translation block 12.1 and a curved baffle 12.2 fixedly connected to the translation block 12.1; a second motor is installed at the second mounting seat 9, and the second motor drives a screw rod 9.2; the translation block 12.1 has a threaded hole 12.3 that cooperates with the screw rod 9.2 and a through hole 12.4 that is passed by the electric telescopic rod 9.1; the curved baffle 12.2 can be inserted into the first translation tube 5 and the second translation tube 6, an air outlet nozzle 4.5 connected to the internal space of the rotating tube 4 is installed at the end of the rotating tube 4, and the first inner arc panel 2.3 is connected to the fan unit 13 through the third connecting rod 2.8; the LED street lamp housing can be in a normal state, a cleaning state and a circulation state. In the normal state, the first inner through hole 2.3.1 is blocked by the rotating tube 4, the first translation tube 5 is retracted into the second installation channel, the second translation tube 6 is retracted into the first translation tube 5, and the second outer through hole 2.6.1 and the second inner through hole 2.5.1 are both blocked by the first translation tube 5 is blocked; in the cleaning state, the fourth through hole 4.2 faces the first inner through hole 2.3.1, the electric telescopic rod 9.1 is in the longest state, the translation block 12.1 closes the end of the first translation tube 5 away from the closing plate 6.2, and the fan unit 13 is turned on; in the circulation state, the third through hole 4.1 faces the first inner through hole 2.3.1, the fourth through hole 4.2 faces the first outer through hole 2.4.1, the electric telescopic rod 9.1 is in the longest state, the arc baffle 12.2 blocks the second outer through hole 2.6.1, and the fan unit 13 is turned on.

[0058] An ambient temperature sensor and an ambient humidity sensor are also installed at the second mounting plate 6.1; the end of the rotating tube 4 has a mounting bevel 4.6, and the image acquisition unit 10 is installed at the mounting bevel 4.6. The inner side of the second mounting channel has a first limiting slide groove 2.9, the outer side of the first translation tube 5 has a first limiting slider 5.1 that cooperates with the first limiting slide groove 2.9, the inner side of the first translation tube 5 has a second limiting slide groove 5.2, and the outer side of the second translation tube 6 has a second limiting slider 6.4 that cooperates with the second limiting slide groove 5.2. The outer side of the second translation tube 6 has an outer groove 6.5, and the arc baffle 12.2 can be located in the outer groove 6.5; the second translation tube 6 has a filter unit 6.6, and the electric telescopic rod 9.1 passes through the filter unit 6.6. The first rotating tube 4 includes a tube body 4.7 and an end cover 4.8 fixedly connected to the tube body, and the first motor is used to drive the end cover 4.8 to rotate. The fixing portion 3 also includes a rectangular frame-shaped insertion portion 3.3 fixedly connected to the fixing plate 3.1 and capable of being inserted into the surrounding shell 1.1. The mounting tube 3.2 is provided with a locking bolt 3.4. A reinforcing rib 3.5 is connected between the fixing plate 3.1 and the mounting tube 3.2. The fixing plate 3.1 and the second shell 2 are fixedly connected by bolts.

[0059] Working principle: As shown in the figure, the lamp housing of the present application can be installed with an LED light-emitting unit inside, and the heat dissipation fins of the LED light-emitting unit are located in the installation cavity, so that the heat dissipation airflow generated by the fan unit can pass over the heat dissipation fins, thereby producing a better heat dissipation effect. In addition, a battery can be installed in the rotating tube, and the heat dissipation airflow can also pass through the battery for heat dissipation. In low-temperature weather, the internal space of the rotating tube can also be in a relatively closed state, so that the heat of the battery is not easy to dissipate, so that the battery is at a suitable operating temperature. And the required sensors, such as ambient temperature sensors, ambient humidity sensors, and air quality sensors, can be installed at the second mounting plate. When not in use, the sensor can be retracted inside the second shell to protect the sensor, and when monitoring is required, it can be extended to perform monitoring.

[0060] Specifically, Figure 2 As shown, in the normal state, the first inner through hole is blocked by the rotating tube, and the first translation tube is retracted into the second installation channel, and the second translation tube is retracted into the first translation tube. At this time, the fan unit can be turned on or off. When turned on, air can enter from the second through hole array and exhaust from the first through hole array to achieve normal heat dissipation, and the fan unit is at a lower speed.

[0061] In the cleaning state, Figure 3 , 4As shown, at this time, the first translation tube is actually blocked by the translation block, and the second outer through hole is open. At this time, the fan unit is at a faster speed, and the air flow enters from the second outer through hole, passes through the second inner through hole, the first inner through hole, and the fourth through hole, and comes out from the air outlet nozzle, thereby cleaning up the debris at the sensor.

[0062] In the circulation state, Figure 5 , 6 As shown, at this time, the second outer through hole is blocked, the first inner through hole faces the third through hole, and the first outer through hole faces the fourth through hole. The airflow generated by the fan unit enters from the open portion of the second translation tube, passes through the second inner through hole and the third through hole, and comes out from the fourth through hole. In this flow state, the heat dissipation efficiency can be improved by increasing the speed of the fan unit. Therefore, when the temperature in the installation cavity is high, the flow state can be implemented to increase the heat dissipation effect on the LED light-emitting unit.

[0063] In addition, before performing air quality monitoring, the cleaning state is first performed to ensure that there is no debris blocking the sensor, and then the circulation state is performed to ensure that air from a farther distance enters the location of the sensor, avoiding the use of the lamp head affecting the nearby air, resulting in inaccurate environmental space monitoring data. During the continuous process of air quality monitoring, the circulation state can also be continued, and the fan unit rotates slowly, so that the air at the location of the sensor is circulating, making the monitored air quality more representative.

[0064] Furthermore, the image acquisition unit of the present application can rotate driven by the rotating tube, so as to obtain an image acquisition range with a larger viewing angle, and can also acquire images of the location where the sensor is located, thereby facilitating remote inspection of the lamp head.

[0065] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. An LED lamp holder for smart city, characterized in that: The invention comprises a first shell, a second shell, a fixing part, a rotating tube, a first translation tube, a second translation tube and an LED light-emitting unit, wherein the first shell and the second shell are fixedly connected, the fixing part comprises a fixing plate and a mounting tube fixedly connected to the fixing plate, and the fixing plate is fixedly connected to the first shell; a first mounting seat and a second mounting seat are installed in the first shell, a first motor is installed at the first mounting seat, an electric telescopic rod is installed at the second mounting seat, an installation inner cavity, a first installation channel and a second installation channel are provided in the second shell, the rotating tube is installed in the first installation channel and driven to rotate by the first motor, and an image acquisition unit is installed at the rotating tube; the second translation tube is inserted into the first translation tube, the first translation tube is inserted into the second installation channel, an end of the second translation tube is connected to the movable end of the electric telescopic rod, an air quality sensor is installed at the second translation tube, and an internal temperature sensor is installed in the installation inner cavity.

2. The LED lamp holder for smart city according to claim 1, characterized in that: The first shell includes a rectangular frame-shaped surrounding shell and a first end plate fixedly connected to the surrounding shell; the second shell includes a top plate, a bottom plate, a second end plate, a first inner arc panel, a first outer arc panel, a second inner arc panel and a second outer arc panel, the first inner arc panel is fixedly connected to the top plate, the bottom plate and the second end plate, the first outer arc panel is fixedly connected to the top plate and the bottom plate, the second inner arc panel is fixedly connected to the top plate, the bottom plate and the second end plate, the second outer arc panel is fixedly connected to the top plate and the bottom plate, the bottom plate has a rectangular mounting opening, the LED light-emitting unit is installed at the rectangular mounting opening, the first outer arc panel and the first inner arc panel surround to form a first mounting channel, the second outer arc panel and the second inner arc panel surround to form the second mounting channel; the first end plate is fixedly connected to the top plate, the first outer arc panel and the second outer arc panel; the bottom plate has a first through hole array and a second through hole array, and the rectangular mounting opening is located between the first through hole array and the second through hole array.

3. The LED lamp holder for smart city according to claim 2, characterized in that: The first inner arc panel has a first inner through hole in the shape of a strip, the first outer arc panel has a first outer through hole in the shape of a strip, the second outer arc panel has a second outer through hole in the shape of a strip, and the second inner arc panel has a second inner through hole in the shape of a strip; the rotating tube has a third through hole in the shape of a strip and a fourth through hole in the shape of a strip, the rotating tube is connected to the first mounting plate through a first connecting rod, the second translation tube is connected to the second mounting plate through a second connecting rod, one end of the second translation tube is connected to a closing plate, and the second translation tube has an open portion; a shielding portion is also installed in the second mounting channel, the shielding portion includes a cylindrical translation block and a curved baffle fixedly connected to the translation block, and the second mounting seat is installed A second motor is installed, and the second motor drives a screw rod. The translation block has a threaded hole matched with the screw rod and a through hole passed by the electric telescopic rod. The arc baffle can be inserted between the first translation tube and the second translation tube. The end of the rotating tube is equipped with an air outlet nozzle connected to the internal space of the rotating tube. The first inner arc panel is connected to the fan unit through a third connecting rod. The LED street lamp housing can be in a normal state, a cleaning state and a circulation state. In the normal state, the first inner through hole is blocked by the rotating tube, the first translation tube is retracted into the second installation channel, the second translation tube is retracted into the first translation tube, and the second outer through hole and the second inner through hole are both blocked by the first translation tube. In the cleaning state, the fourth through hole faces the first inner through hole, the electric telescopic rod is in its longest state, the translation block closes the end of the first translation tube away from the closing plate, and the fan unit is turned on; in the circulation state, the third through hole faces the first inner through hole, the fourth through hole faces the first outer through hole, the electric telescopic rod is in its longest state, the arc baffle blocks the second outer through hole, and the fan unit is turned on.

4. The LED lamp holder for smart city according to claim 3, characterized in that: An ambient temperature sensor and an ambient humidity sensor are also installed at the second installation plate; the end of the rotating tube has a mounting bevel, and the image acquisition unit is installed at the mounting bevel.

5. The LED lamp holder for smart city according to claim 3, characterized in that: The inner side of the second installation channel has a first limiting slide groove, the outer side of the first translation tube has a first limiting slide block that cooperates with the first limiting slide groove, the inner side of the first translation tube has a second limiting slide groove, and the outer side of the second translation tube has a second limiting slide block that cooperates with the second limiting slide groove.

6. The LED lamp holder for smart city according to claim 3, characterized in that: The outer side of the second translation tube is provided with an outer groove, and the arc baffle can be located in the outer groove; the second translation tube is provided with a filter unit, and the electric telescopic rod passes through the filter unit.

7. The LED lamp holder for smart city according to claim 3, characterized in that: The first rotating tube includes a tube body and an end cover fixedly connected to the tube body, and the first motor is used to drive the end cover to rotate.

8. The LED lamp holder for smart city according to claim 3, characterized in that: The fixing part also includes a rectangular frame-shaped insertion part fixedly connected to the fixing plate and capable of being inserted into the surrounding shell. The mounting tube is provided with a locking bolt. A reinforcing rib is connected between the fixing plate and the mounting tube. The fixing plate and the second shell are fixedly connected by bolts.

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