A ring-connected expandable LED smart street light

Abstract

The present invention discloses a ring-connected expandable LED smart street lamp, which relates to the technical field of smart street lamps, including a lamp pole; a lamp body; a photovoltaic panel; a protection mechanism, which includes a slider, a telescopic rod is rotatably connected to the slider, one end of the telescopic rod is rotatably connected to the photovoltaic panel, and two protection plates are symmetrically slidably connected to a fixed plate; a cleaning mechanism, which includes a cross bar slidably connected to the fixed plate, a brush is fixedly connected to the cross bar, and the brush abuts against the photovoltaic panel; the slider slides on the fixed plate in a first direction to first drive the photovoltaic panel to rotate to a horizontal state, and when the photovoltaic panel is in a horizontal state, the cross bar is passively driven to move laterally, and the photovoltaic panel is cleaned by the brush, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel; as the slider continues to move, the two protection plates are passively driven to move closer to and abut against each other, and the two protection plates cover the outside of the photovoltaic panel, thereby protecting the photovoltaic panel in a horizontal state, thereby preventing damage to the photovoltaic panel caused by severe weather such as hail.

Description

Technical Field

[0001] The present invention relates to the technical field of smart street lamps, and in particular to a ring-connected expandable LED smart street lamp. Background Art

[0002] Smart street lights will be based on road lighting poles, integrating public security, traffic signals, communications, traffic signs, etc., realizing multiple poles into one, reducing road poles, and releasing public space resources; at the same time, as an important carrier for smart city construction, smart street lights will serve as the port of the Internet of Things and play a greater "complex" role; as the most densely and evenly distributed information infrastructure in the city, street light poles are considered to be the best carrier for outdoor coverage of 5G base stations. Driven by the construction of smart cities and 5G base stations, they will gradually change from a single lighting function to a new type of public infrastructure.

[0003] For example, the publication number is: CN211475780U, and the name is: "A solar photovoltaic panel street light". It can sense the direction of the sun through a light sensor. Under the action of the control box, the power source can be controlled to drive the column to rotate, thereby driving the photovoltaic panel to rotate to face the sun to ensure a stronger light intensity. A lifting mechanism is provided on the lower pillar, so that the device can be lifted and lowered, which is more convenient when maintenance is required. A sealed door is provided on the control hole, and a lock hole is also provided on the sealed door, which can play a protective role. The lock hole can lock the sealed door to prevent someone from casually damaging the control hole device. An articulated seat for hingedly connecting the column and the photovoltaic panel is provided between the column and the photovoltaic panel, so that the angle of the photovoltaic panel can be adjusted. Before installation, adjust it according to the light conditions of the use area and location, and select a suitable angle.

[0004] The shortcomings of the prior art, such as that including the above-mentioned patent, are as follows: 1. Since the photovoltaic panels are exposed on the side of the road, the dust raised by passing cars will adhere to the photovoltaic panels, and because of the exposure, there may also be bird droppings. Whether it is dust or bird droppings, they will block the photovoltaic panels and affect the photoelectric conversion efficiency of the photovoltaic panels; 2. When encountering severe weather, such as hail, the photovoltaic panels lack protection, so that the hail will directly hit the exposed photovoltaic panels, causing damage to the photovoltaic panels. Summary of the invention

[0005] The purpose of the present invention is to provide a ring-connected expandable LED smart street lamp to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a ring-connected expandable LED smart street lamp, comprising:

[0007] Light poles;

[0008] A lamp body, which is fixedly connected to the lamp pole;

[0009] A photovoltaic panel, which is rotatably connected to the light pole via a fixing plate;

[0010] The protection mechanism comprises a slider slidably connected to a fixed plate, a telescopic rod rotatably connected to the slider, one end of the telescopic rod is rotatably connected to the photovoltaic panel, and two protection plates are symmetrically slidably connected to the fixed plate;

[0011] The cleaning mechanism comprises a cross bar slidably connected to the fixed plate, a brush is fixedly connected to the cross bar, and the brush abuts against the photovoltaic panel;

[0012] When the slider slides along the first direction, it has a first stroke and a second stroke respectively;

[0013] In the first stroke: the telescopic rod is driven to extend, so that the photovoltaic panel is rotated from an inclined state to a horizontal state, and the brush is triggered to clean the photovoltaic panel in the horizontal state;

[0014] In the second stroke: the two protection plates are driven to approach and abut each other, thereby protecting the photovoltaic panel.

[0015] Furthermore, a slide groove is provided on the fixed plate, the slider is slidably connected in the slide groove, a screw rod is rotatably connected to the fixed plate, and the screw rod is threadedly connected to the slider.

[0016] Furthermore, both protective plates are fixedly connected with abutment rods, and two through grooves are symmetrically opened on the fixed plate. The two abutment rods are slidably connected in the two through grooves one by one. Two guide frames are fixedly connected to the slider, and both guide frames have guide grooves. The two guide grooves are slidably abutted with the two abutment rods one by one.

[0017] Furthermore, the guide groove is composed of a holding section and a moving section connected to each other.

[0018] Furthermore, the cleaning mechanism also includes two cleaning components, each of which includes a guide rail fixedly connected to the fixed plate, a translation block slidably connected to the guide rail, a spring is arranged between the translation block and the guide rail, and the two translation blocks are fixedly connected to the cross bar.

[0019] Furthermore, the cleaning assembly also includes a gear fixedly connected to the photovoltaic panel, a rack is vertically slidably connected to the fixed plate, the gear is meshed with the rack, and the top of the rack is abutted against the translation block.

[0020] Furthermore, an abutment plate is fixedly connected to the photovoltaic panel, and the abutment plate is abutted and matched with the cross bar.

[0021] Furthermore, it also includes a water spray mechanism, which includes a water tank fixedly connected to the lamp pole, a first water discharge hole is opened on the water tank, and a first bevel gear fixedly connected to the screw rod, a second bevel gear is rotatably connected in the lamp pole, the first bevel gear is meshed with the second bevel gear, a rotating shaft is fixedly connected to the second bevel gear, the rotating shaft passes through and extends to the outside of the lamp pole, and is fixedly connected to a water discharge plate, the water discharge plate is rotatably abutted against the water tank, a second water discharge hole is opened on the water discharge plate, and the second water discharge hole is communicated and coordinated with the first water discharge hole.

[0022] Furthermore, a motor for driving the screw rod to rotate is fixedly connected inside the lamp pole.

[0023] Furthermore, the invention further comprises a driving mechanism, which comprises a first pulley fixedly connected to the screw rod, a second pulley rotatably connected inside the lamp pole, a belt is arranged between the first pulley and the second pulley, and a shifting rod is fixedly connected to the second pulley.

[0024] In the above technical solution, the present invention provides a ring-connected expandable LED smart street lamp:

[0025] By sliding the slider on the fixed plate in a first direction, the photovoltaic panel is first driven to rotate to a horizontal state. When the photovoltaic panel is in a horizontal state, the cross bar is passively driven to move laterally, and the photovoltaic panel is cleaned by a brush, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel. With the continuous movement of the slider, the two protective plates are driven to passively move closer to each other and abut against each other. The two protective plates cover the outside of the photovoltaic panel, thereby protecting the photovoltaic panel in a horizontal state and preventing damage to the photovoltaic panel caused by severe weather such as hail.

[0026] In the process of rotating the photovoltaic panel to open or close, the gear, rack and translation block cooperate to make the rack abut against the translation block or release the abutment with the translation block; when the rack abuts against the translation block, it can prevent the cross bar from always abutting against the photovoltaic panel due to the elastic force of the spring, which may cause damage to the photovoltaic panel in the long run. By releasing the abutment between the rack and the translation block, the brush is driven to clean the photovoltaic panel due to the elastic force of the spring.

[0027] The power generated by the rotation of the screw can drive the water discharge plate to rotate through the power transmission of the first bevel gear, the second bevel gear and the rotating shaft. During the rotation of the water discharge plate, the second water discharge hole will be connected with the first water discharge hole of the water reservoir, so that the water in the water reservoir can flow down through the second water discharge hole and the first water discharge hole and fall on the photovoltaic panel. Since the photovoltaic panel is in a tilted state at this time, the water will flow from one end of the photovoltaic panel to the other end, and then be cleaned by the subsequent cleaning mechanism, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0029] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a cross-sectional structure of a lamp pole provided in an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the structure of a fixing plate and a protection mechanism provided in an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the bottom structure of a fixing plate provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the guide frame structure provided by an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the structure of a fixed plate, a photovoltaic panel, and a protection mechanism provided in an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the photovoltaic panel and cleaning mechanism provided in an embodiment of the present invention;

[0036] Figure 8 A schematic diagram of the cleaning mechanism structure provided by an embodiment of the present invention;

[0037] Fig. 9 A schematic diagram of the structure of a water spray mechanism provided in an embodiment of the present invention;

[0038] Fig.10 This is a schematic diagram of the local enlarged structure of location A provided in an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Lamp pole; 2. Lamp body; 3. Photovoltaic panel; 31. Abutment plate; 4. Fixed plate; 41. Slide groove; 42. Through groove; 5. Protection mechanism; 51. Screw; 52. Slider; 53. Telescopic rod; 54. Protection plate; 55. Abutment rod; 56. Guide frame; 561. Holding section; 562. Moving section; 6. Cleaning mechanism; 61. Guide rail; 62. Translation block; 63. Spring; 64. Crossbar; 65. Brush; 66. Gear; 67. Rack; 7. Water spraying mechanism; 71. First bevel gear; 72. Second bevel gear; 73. Rotating shaft; 74. Drain plate; 741. Second drain hole; 75. Reservoir; 751. First drain hole; 8. Driving mechanism; 81. First pulley; 82. Second pulley; 83. Belt; 84. Drag lever. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] See also Figure 1-10 An embodiment of the present invention provides a ring-connected expandable LED smart street lamp, comprising: a lamp pole 1; a lamp body 2, which is fixedly connected to the lamp pole 1; a photovoltaic panel 3, which is rotatably connected to the lamp pole 1 through a fixing plate 4; wherein the fixing plate 4 is fixedly connected to the lamp pole 1.

[0043] The protection mechanism 5 includes a slider 52 slidably connected to the fixed plate 4, a telescopic rod 53 is rotatably connected to the slider 52, one end of the telescopic rod 53 is rotatably connected to the photovoltaic panel 3, and two protection plates 54 are symmetrically slidably connected to the fixed plate 4.

[0044] It is worth mentioning that when the photovoltaic panel 3 is in an open and tilted state, the telescopic rod 53 is in a vertical state, and the length of the telescopic rod 53 is the shortest at this time; when the photovoltaic panel 3 is in a horizontal state, the length of the telescopic rod 53 is the longest.

[0045] The specific sliding manner of the slider 52 on the fixed plate 4 is as follows: a slide groove 41 is provided on the fixed plate 4, the slider 52 is slidably connected in the slide groove 41, a screw rod 51 is rotatably connected to the fixed plate 4, and the screw rod 51 is threadedly connected to the slider 52.

[0046] The two protection plates 54 are fixedly connected with abutment rods 55, and two through grooves 42 are symmetrically opened on the fixed plate 4. The two abutment rods 55 are slidably connected in the two through grooves 42 one by one. The slider 52 is fixedly connected with two guide frames 56, and the two guide frames 56 have guide grooves. The two guide grooves are slidably abutted with the two abutment rods 55 one by one; specifically, the guide groove is composed of a retaining section 561 and a moving section 562 connected to each other.

[0047] During operation, when the photovoltaic panel 3 is stored and protected, the screw 51 rotates, driving the slider 52 to slide laterally in the slide groove 41 along the first direction, so that the length of the telescopic rod 53 is extended. At the same time, the photovoltaic panel 3 rotates around the rotation axis between it and the fixed plate 4, and rotates from a tilted open state to a horizontal storage state.

[0048] When the slider 52 slides along the first direction, the two guide frames 56 are driven to move synchronously. When the retaining section 561 abuts against the abutment rod 55, the positions of the two protective plates 54 remain stationary, and the cleaning mechanism 6 completes the cleaning within this time period. When the slider 52 continues to slide, the moving section 562 abuts against the abutment rod 55, driving the two protective plates 54 to approach and abut against each other. The two protective plates 54 cover the outer side of the photovoltaic panel 3, thereby completing the protection of the photovoltaic panel 3.

[0049] The cleaning mechanism 6 includes a cross bar 64 slidably connected to the fixed plate 4, and a brush 65 is fixedly connected to the cross bar 64, and the brush 65 abuts against the photovoltaic panel 3; specifically, the cleaning mechanism 6 also includes two cleaning components, each of which includes a guide rail 61 fixedly connected to the fixed plate 4, and the guide rail 61 is slidably connected to a translation block 62, and a spring 63 is arranged between the translation block 62 and the guide rail 61; the spring 63 is a tension spring; the two translation blocks 62 are both fixedly connected to the cross bar 64.

[0050] During use, when the photovoltaic panel 3 is in a tilted open state, the cross bar 64 abuts against the photovoltaic panel 3. When the photovoltaic panel 3 is in a horizontally stored state, the cross bar 64 and the photovoltaic panel 3 are out of abutment, and the spring 63 restores its elastic deformation, driving the translation block 62 to slide laterally on the guide rail 61, and the translation block 62 drives the cross bar 64 and the brush 65 to move horizontally synchronously, and the cleaning of the photovoltaic panel 3 is completed through the abutment of the brush 65 with the photovoltaic panel 3.

[0051] Preferably, an abutment plate 31 is fixedly connected to the photovoltaic panel 3 , and the abutment plate 31 abuts and cooperates with the cross bar 64 .

[0052] It is worth mentioning that: through the abutment between the abutment plate 31 and the cross bar 64, it can be ensured that the cross bar 64 always maintains an abutment state with the photovoltaic panel 3. Therefore, when the photovoltaic panel 3 is rotated and opened from a horizontal state, the photovoltaic panel 3 rotates and the photovoltaic panel 3 abuts against the cross bar 64, which will pull the spring 63 to produce elastic deformation and extend, thereby achieving: when the photovoltaic panel 3 is opened, the brush 65 cleans the photovoltaic panel 3 again, and at the same time, the cross bar 64 and the brush 65 are reset to prepare for the next cleaning.

[0053] Preferably, the cleaning assembly also includes a gear 66 fixedly connected to the photovoltaic panel 3 , a rack 67 is vertically slidably connected to the fixed plate 4 , the gear 66 is meshed with the rack 67 , and the top of the rack 67 is abutted against the translation block 62 .

[0054] It can be understood that in order to avoid the cross bar 64 always abutting against the photovoltaic panel 3 when the photovoltaic panel 3 is in the open state, which may cause damage to the photovoltaic panel 3 in the long run; the cross bar 64 is locked by the mutual cooperation of the rack 67, the gear 66, and the translation block 62, thereby avoiding the cross bar 64 from abutting against the photovoltaic panel 3 for a long time.

[0055] When in use, during the process of the photovoltaic panel 3 rotating from the inclined state to the horizontal state, the gear 66 rotates synchronously with the photovoltaic panel 3, and the gear 66 drives the rack 67 to move vertically downward by meshing with the rack 67, so that the rack 67 is disengaged from the translation block 62, and the photovoltaic panel 3 is cleaned by the elastic force of the spring 63; when the photovoltaic panel 3 is rotated from the horizontal state to the inclined state, according to the principle described above, the top of the photovoltaic panel 3 drives the translation block 62 to slide horizontally on the guide rail 61 through the abutment with the cross bar 64, and at the same time, the gear 66 drives the rack 67 to move vertically upward, and when the photovoltaic panel 3 is fully in the inclined open state, the top of the rack 67 abuts against the translation block 62.

[0056] When the slider 52 slides along the first direction, it has a first stroke and a second stroke respectively;

[0057] In the first stroke: the telescopic rod 53 is extended to rotate the photovoltaic panel 3 from the inclined state to the horizontal state, and the brush 65 is triggered to clean the photovoltaic panel 3 in the horizontal state;

[0058] In the second stroke: the two protection plates 54 are driven to approach and abut each other, thereby protecting the photovoltaic panel 3 .

[0059] Preferably, a water spraying mechanism 7 is also included, which is used to store rainwater and spray water on the photovoltaic panel 3 when the photovoltaic panel 3 is rotated open and before the cleaning mechanism 6 starts working, thereby enhancing the cleaning effect.

[0060] Specifically, it includes a water reservoir 75 fixedly connected to the lamp pole 1, and a first water discharge hole 751 is opened on the water reservoir 75. It also includes a first bevel gear 71 fixedly connected to the screw 51. A second bevel gear 72 is rotatably connected in the lamp pole 1. The first bevel gear 71 is meshed with the second bevel gear 72. A rotating shaft 73 is fixedly connected to the second bevel gear 72. The rotating shaft 73 passes through and extends to the outside of the lamp pole 1, and is fixedly connected to a water discharge plate 74. The water discharge plate 74 is rotatably abutted against the water reservoir 75. A second water discharge hole 741 is opened on the water discharge plate 74. The second water discharge hole 741 is connected and matched with the first water discharge hole 751.

[0061] When the screw 51 rotates, the slider 52 moves along the second direction on the fixed plate 4, that is, when the photovoltaic panel 3 is in the process of rotating and storing, the force of the rotation of the screw 51 drives the water discharge plate 74 to rotate through the power transmission of the first bevel gear 71, the second bevel gear 72 and the rotating shaft 73. As the water discharge plate 74 rotates, the second water discharge hole 741 will rotate to the position of the first water discharge hole 751 and communicate with the first water discharge hole 751, so that the water in the water reservoir 75 can flow down through the first water discharge hole 751 and the second water discharge hole 741. At this time, the photovoltaic panel 3 is in a tilted state. After the water flows down, it will flow from one end of the photovoltaic panel 3 to the other end, and then the photovoltaic panel 3 will be cleaned by the subsequent cleaning mechanism 6, thereby improving the cleaning effect.

[0062] It should be noted that during the rotation of the water down hole 74, initially, the second water down hole 741 is staggered with the first water down hole 751, and the second water down hole 741 is located on one side of the first water down hole 751. As the rotation proceeds, the second water down hole 741 is connected to the first water down hole 751, and then the second water down hole 741 moves to the other side of the first water down hole 751 as it rotates. In this way, water in the water reservoir 75 can be saved to prevent too much water from flowing out of the water reservoir 75 at once.

[0063] Preferably, a filter is provided at the bottom of the water reservoir 75 , and the filter is used to filter debris such as leaves to prevent the debris from clogging the first water discharge hole 751 , thereby causing poor water flow in the water reservoir 75 .

[0064] The power for the screw rod 51 to rotate is: a motor for driving the screw rod 51 to rotate is fixedly connected inside the lamp pole 1 .

[0065] As a parallel embodiment: the power for the rotation of the screw rod 51 can also be manually driven, specifically, it also includes a driving mechanism 8, which includes a first pulley 81 fixedly connected to the screw rod 51, a second pulley 82 rotatably connected inside the lamp pole 1, a belt 83 is provided between the first pulley 81 and the second pulley 82, and a lever 84 is fixedly connected to the second pulley 82.

[0066] An inspection door is hinged on the lamp pole 1, and the second pulley 82 is located inside the inspection door. When the screw 51 needs to be driven to rotate, the lever 84 is held to drive the second pulley 82 to rotate around its own rotation axis, and the screw 51 is driven to rotate through the power transmission of the belt 83 and the first pulley 81.

[0067] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ring-connected expandable LED smart street light, characterized in that: include: Light pole (1); A lamp body (2) fixedly connected to the lamp pole (1); A photovoltaic panel (3) which is rotatably connected to the lamp pole (1) via a fixing plate (4); A slide groove (41) is provided on the fixed plate (4), a slide block (52) is slidably connected in the slide groove (41), a screw rod (51) is rotatably connected to the fixed plate (4), and the screw rod (51) is threadedly connected to the slide block (52); A protection mechanism (5) comprising a slider (52) slidably connected to the fixed plate (4), a telescopic rod (53) rotatably connected to the slider (52), one end of the telescopic rod (53) being rotatably connected to the photovoltaic panel (3), and two protection plates (54) symmetrically slidably connected to the fixed plate (4); The two protection plates (54) are both fixedly connected with abutment rods (55), the fixed plate (4) is symmetrically provided with two through grooves (42), the two abutment rods (55) are respectively slidably connected in the two through grooves (42) in a one-to-one correspondence, the slider (52) is fixedly connected with two guide frames (56), the two guide frames (56) are both provided with guide grooves, and the two guide grooves are respectively slidably abutted against the two abutment rods (55) in a one-to-one correspondence; A cleaning mechanism (6) comprising a crossbar (64) slidably connected to the fixed plate (4), a brush (65) being fixedly connected to the crossbar (64), and the brush (65) being in contact with the photovoltaic panel (3); The cleaning mechanism (6) further comprises two cleaning components, each of which comprises a guide rail (61) fixedly connected to the fixed plate (4), the guide rail (61) being slidably connected to a translation block (62), a spring (63) being provided between the translation block (62) and the guide rail (61), and the two translation blocks (62) being fixedly connected to a crossbar (64); It also includes a water spray mechanism (7), which includes a water reservoir (75) fixedly connected to the lamp post (1), a first water discharge hole (751) being provided on the water reservoir (75), and a first bevel gear (71) fixedly connected to the screw rod (51), a second bevel gear (72) being rotatably connected inside the lamp post (1), the first bevel gear (71) meshing with the second bevel gear (72), a rotating shaft (73) being fixedly connected to the second bevel gear (72), the rotating shaft (73) passing through and extending to the outside of the lamp post (1), and a water discharge plate (74) being fixedly connected thereto, the water discharge plate (74) being rotatably abutted against the water reservoir (75), a second water discharge hole (741) being provided on the water discharge plate (74), and the second water discharge hole (741) being communicated and matched with the first water discharge hole (751); When the slider (52) slides along the first direction, it has a first stroke and a second stroke respectively; In the first stroke: the telescopic rod (53) is driven to extend in length, so that the photovoltaic panel (3) is rotated from an inclined state to a horizontal state, and the brush (65) is triggered to clean the photovoltaic panel (3) in the horizontal state; In the second stroke: the two protection plates (54) are driven to approach and abut each other, thereby protecting the photovoltaic panel (3).

2. The ring-connected expandable LED smart street light according to claim 1, characterized in that: The guide groove is composed of a holding section (561) and a moving section (562) which are connected to each other.

3. The ring-connected expandable LED smart street light according to claim 1, characterized in that: The cleaning assembly also includes a gear (66) fixedly connected to the photovoltaic panel (3), a rack (67) vertically slidably connected to the fixed plate (4), the gear (66) meshing with the rack (67), and the top of the rack (67) abuttingly cooperating with the translation block (62).

4. The ring-connected expandable LED smart street light according to claim 1, characterized in that: An abutment plate (31) is fixedly connected to the photovoltaic panel (3), and the abutment plate (31) abuts and cooperates with the crossbar (64).

5. The ring-connected expandable LED smart street light according to claim 1, characterized in that: A motor for driving the screw rod (51) to rotate is fixedly connected inside the lamp pole (1).

6. The ring-connected expandable LED smart street light according to claim 1, characterized in that: It also includes a driving mechanism (8), which includes a first pulley (81) fixedly connected to the screw rod (51), a second pulley (82) rotatably connected inside the lamp pole (1), a belt (83) is provided between the first pulley (81) and the second pulley (82), and a shifting rod (84) is fixedly connected to the second pulley (82).

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