A street lamp

Abstract

The present invention relates to a street lamp, which comprises a lamp post and a lighting lamp, wherein a lifting seat and a lifting member for driving the lifting seat to move are arranged in the lamp post, a plurality of storage slots are provided on the lifting seat, the lighting lamp is rotatably connected in the storage slots, and a pushing component for pushing the lighting lamp to rotate is arranged on the lifting seat, when lighting, the lifting seat and the lighting lamp are both located outside the lamp post, and the lighting lamp is in a horizontal state, and when storing, the lifting seat and the lighting lamp are both located inside the lamp post, and the lighting lamp is in a vertical state. The present invention has the effect of extending the service life of the lighting lamp.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting equipment, and in particular to a street lamp. Background Art

[0002] Street lights refer to lamps that provide lighting for roads. They generally refer to lamps within the road surface lighting range in traffic lighting. Street lights are widely used in various places where lighting is needed.

[0003] A Chinese patent with announcement number CN113883453A discloses a retractable solar street light, which includes a mounting base, two mounting grooves that penetrate left and right and open upward, a rotating shaft rotatably connected between the front and rear walls of the mounting groove, a mounting rod fixedly provided on the rotating shaft, a fixing module that can fix the mounting rod is provided in the mounting groove, and a first telescopic rod is fixedly provided on the top surface of the mounting rod; the present invention uses solar energy as the energy supply of the street light to reduce energy consumption, and at the same time, when encountering severe weather such as typhoons, the rod body can be retracted to reduce the wind force it receives, and even if it collapses, the impact range can be reduced. At the same time, a rescue platform can be provided in the event of a flood, and a telescopic frame is pulled to form a platform for people to temporarily stay between the front and rear first telescopic rods and the second telescopic rod, so that rescue personnel can provide centralized assistance.

[0004] With respect to the above-mentioned related technologies, in the prior art, the staff uses the cooperation of the first telescopic rod and the second telescopic rod to adjust the height of the lamp body, thereby achieving the effect of storing the lamp body. However, the lamp body in the prior art is located outside both before and after storage, and the lamp body is affected by the external environment on the outside. The surface of the lamp body is easily covered with dust. After being affected by rain or morning dew, dust will accumulate on the surface of the lamp body, thereby reducing the lighting effect of the lamp body and affecting the heat dissipation effect of the lamp body. A lamp body with poor heat dissipation effect will increase the internal temperature of the lamp body, affecting the power generation power of the lamp source, and may also accelerate the sublimation rate of the filament. The material inside the filament is reduced due to sublimation, and the filament gradually becomes thinner and increases the resistance. At this time, the filament is prone to breakage after being instantly energized, thereby shortening the service life of the lamp body. Summary of the invention

[0005] In order to extend the service life of a lighting lamp, the present application provides a street lamp.

[0006] This application provides the following technical solutions for street lamps:

[0007] A street lamp comprises a lamp post and a lighting lamp, wherein a lifting seat and a lifting component for driving the lifting seat to move are arranged inside the lamp post, a plurality of storage grooves are opened on the lifting seat, the lighting lamp is rotatably connected in the storage grooves, and a pushing component for pushing the lighting lamp to rotate is arranged on the lifting seat. When lighting, the lifting seat and the lighting lamp are both located outside the lamp post, and the lighting lamp is in a horizontal state; when storing, the lifting seat and the lighting lamp are both located inside the lamp post, and the lighting lamp is in a vertical state.

[0008] By adopting the above technical solution, when using, the staff uses the lifting member to push the lifting seat up, driving the illuminating lamp to rise. In this process, the illuminating lamp is assisted by the force of the pushing component to rotate until the illuminating lamp is separated from the lamp post and the illuminating lamp is in a horizontal state; when storing, the staff uses the lifting member to lower the lifting seat. In this process, the illuminating lamp resists the top of the lamp post and rotates in the opposite direction until it completely enters the storage groove. When the lifting seat completely enters the lamp post, the storage of the illuminating lamp is realized. The staff realizes the use and storage of the illuminating lamp through the cooperation of the lifting member and the lifting seat, so that the illuminating lamp can be stored in the lamp post when no lighting is needed, and the dust on the surface of the illuminating lamp will be scraped off during the flipping process. At the same time, inside the lamp post, the possibility of the illuminating lamp being affected by external rain or morning dew and the possibility of dirt covering the illuminating lamp is reduced, so that the illuminating lamp maintains a good lighting effect, and the internal temperature of the illuminating lamp is normalized, so that the filament inside the illuminating lamp maintains a normal consumption process. Compared with the prior art, the possibility of filament breakage is reduced and the service life of the illuminating lamp is extended.

[0009] Optionally, a connecting seat is provided on the lifting seat, one end of the lighting lamp is rotatably connected to the connecting seat, and a locking assembly is provided on the lifting seat, the locking assembly includes a rotating frame, a limiting arc rod, a fixed round block and a moving block, the moving block is slidably fitted on the connecting seat, and an adjusting assembly for adjusting the position of the moving block is provided on the connecting seat, one end of the rotating frame is rotatably connected to the moving block, the limiting arc rod is connected to the other end of the rotating frame, and the fixed round block is connected to the position of the lifting seat corresponding to the rotating frame, and a limiting arc groove matching the shape of the limiting arc rod is opened on the surface of the fixed round block, and when the connecting seat is locked, the limiting arc rod is partially embedded in the limiting arc groove.

[0010] By adopting the above technical solution, when locking the connecting seat, the staff sets the connecting seat on the lifting seat, and then pushes the moving block through the adjustment component to drive the moving frame to move, so that the limiting arc rod moves and rotates, and then pulls the moving block in the opposite direction to make the limiting arc rod partially embedded in the limiting arc groove, thereby driving the connecting seat to press against the lifting seat, thereby realizing the installation of the connecting seat.

[0011] Optionally, the adjustment assembly includes an adjusting bolt and a limiting block, the limiting block is connected to the moving block, a limiting groove is opened on the connecting seat, the moving block is slidingly fitted in the limiting groove through the limiting block, the adjusting bolt is rotatably connected to the connecting seat, the adjusting bolt passes through the moving block, and is threadably fitted with the moving block.

[0012] By adopting the above technical solution, when adjusting the moving block, the staff uses a tool to rotate the adjusting bolt, and through the cooperation between the limiting block and the limiting groove, the moving block moves along the direction of the limiting groove, thereby achieving the effect of adjusting the moving block.

[0013] Optionally, the pushing assembly includes a fixed tube, a pushing column, a pushing plate and a pushing spring. Two receiving grooves are provided, and the two receiving grooves are arranged opposite to each other. The fixed tube is passed through the two receiving grooves. Both ends of the fixed tube are opened and are connected with limiting rings. The pushing plates slide and cooperate with two pieces in the fixed tube. One end of the pushing column is connected to the pushing plate, and the other end slides and cooperates with the limiting ring. The pushing spring is provided in the fixed tube and is located between the two pushing plates. When the lighting lamp is stored, the pushing column contacts the lighting lamp, and the pushing spring is in a compressed state.

[0014] By adopting the above technical solution, the lighting lamp cannot be turned over normally in the storage slot. The staff uses the force of the push spring to press the push plate, so that the push column presses against the lighting lamp. When the lighting lamp is partially moved out of the lamp column, the lighting lamp rotates under the force of the push column, and then gradually rotates under its own weight, achieving the effect of the push component assisting the lighting lamp to rotate.

[0015] Optionally, a photovoltaic panel is installed on the top of the lifting seat, a battery box is installed in the lamp post, a controller is built in the battery box, and the photovoltaic panel and the lighting lamp are electrically connected to the controller.

[0016] By adopting the above technical solutions, the staff used photovoltaic panels and battery boxes to achieve the effect of self-generation and self-use of electricity, saving power consumption for urban construction. Even if a large-scale power outage occurs, the street lights can also provide their own power for lighting, ensuring the safety of people's night travel.

[0017] Optionally, a plurality of thermal imagers are mounted on the lamp post, and the lighting lamp has an internal atmosphere light, the power usage of the atmosphere light is lower than the power usage of the lighting lamp, and the atmosphere light and the thermal imager are both electrically connected to the controller.

[0018] By adopting the above technical solution, the staff can use the thermal imager to detect the movement of people within a certain range around, that is, send an electrical signal to the controller to power on the atmosphere light of the control system. On the basis of providing basic lighting, it increases the theme atmosphere effect, while reducing the output power of the lighting and reducing the power consumption of the battery box.

[0019] Optionally, a voice control module is installed on the lamp post, and the voice control module is electrically connected to the controller.

[0020] By adopting the above technical solution, the staff uses the voice control module to detect the surrounding sounds. When the surrounding sounds exceed the rated decibels, the voice control module sends an electrical signal to the control system, so that the control system controls the lifting component to start, so that the lighting lamp is moved out of the lamp post and turned on; if the sound is less than or equal to the rated decibel, the lighting lamp is turned off; when there is no sound at all, the lighting lamp or atmosphere lamp is turned off, and the lifting component is started to store the lighting lamp into the lamp post.

[0021] Optionally, a rubber roller is rotatably connected to the top of the lamp post at a position corresponding to the lighting lamp.

[0022] By adopting the above technical solution, the top of the lamp post will scrape off the dust on the surface of the lamp during the movement and flipping of the lamp, but there is also the possibility of damaging the surface of the lamp. The staff uses the rubber roller to contact the surface of the lamp. While the rubber roller is squeezed and rotated by the lamp, it will also wipe off the dust on the surface of the lamp to a certain extent through friction, reducing the possibility of damage to the surface of the lamp.

[0023] Optionally, a connecting block is connected to the bottom end of the lifting seat, an avoidance groove is opened on the inner wall of the lamp post at a position corresponding to the connecting block, the connecting block is slidably fitted in the avoidance groove, and a stop block is connected to the top of the avoidance groove.

[0024] By adopting the above technical solution, when lighting, the lifting seat moves, driving the connecting block to move until the connecting block abuts against the stopper, thereby limiting the rising stroke of the lifting seat and reducing the possibility of the lifting seat moving out of the lamp post.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When in use, the staff uses the lifting member to push the lifting seat up, driving the lamp to rise. During this process, the lamp is assisted by the force of the pushing component to rotate until the lamp is detached from the lamp post and the lamp is in a horizontal state; when storing, the staff uses the lifting member to lower the lifting seat. During this process, the lamp hits the top of the lamp post and rotates in the opposite direction until it completely enters the storage slot. When the lifting seat is completely in the lamp post, the lamp is stored. The staff realizes the use and storage of the lamp through the cooperation of the lifting member and the lifting seat, so that the lamp can be stored in the lamp post when it is not needed, and the dust on the surface of the lamp will be scraped off during the flipping process. At the same time, inside the lamp post, the possibility of the lamp being affected by external rain or morning dew and covered with dirt is reduced, so that the lamp maintains a good lighting effect while normalizing the internal temperature of the lamp, so that the filament inside the lamp maintains a normal consumption process. Compared with the existing technology, the possibility of filament breakage is reduced and the service life of the lamp is extended;

[0027] 2. When locking the connecting seat, the staff sets the connecting seat on the lifting seat, and then pushes the moving block through the adjustment component to drive the moving frame to move, so that the limiting arc rod moves and rotates, and then pulls the moving block in the opposite direction to make the limiting arc rod partially embedded in the limiting arc groove, thereby driving the connecting seat to press against the lifting seat, and realizing the installation of the connecting seat;

[0028] 3. The staff uses the force of the push spring to apply pressure to the push plate, so that the push column presses against the lamp. When the lamp is partially moved out of the lamp column, the lamp rotates due to the force of the push column, and then gradually rotates due to its own weight, achieving the effect of the push component assisting in pushing the lamp to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the street lamp in the embodiment of the present application.

[0030] Figure 2 It is a cross-sectional view used to reflect the internal structure of the street lamp in the embodiment of the present application.

[0031] Figure 3 It is a cross-sectional view used to reflect the structure of the connecting block and the blocking block in the embodiment of the present application.

[0032] Figure 4 It is a cross-sectional view used to illustrate the structure of the lifting seat, the locking assembly and the adjusting assembly in the embodiment of the present application.

[0033] Figure 5 yes Figure 2 Enlarged view of point A in the middle.

[0034] Figure 6 yes Figure 2 Enlarged view of point B in the middle.

[0035] Figure 7 It is a lighting status diagram of the street lamp in the embodiment of the present application.

[0036] Explanation of the reference numerals: 1. lamp post; 11. block; 12. lifting member; 13. battery box; 14. rubber roller; 15. voice control module; 16. thermal imager; 2. lighting lamp; 21. connecting seat; 3. lifting seat; 31. connecting block; 32. photovoltaic panel; 4. locking assembly; 41. rotating frame; 42. limiting arc rod; 43. fixed round block; 44. moving block; 5. adjusting assembly; 51. adjusting bolt; 52. limiting block; 6. pushing assembly; 61. fixing tube; 62. pushing column; 63. pushing plate; 64. pushing spring. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0038] The present application embodiment discloses a street lamp. Figure 1 , Figure 2 and Figure 3 The street lamp comprises a lamp post 1 and a lighting lamp 2. The lamp post 1 is a rectangular column, and the top of the lamp post 1 is open. A lifting seat 3 is vertically slidably matched inside the lamp post 1, and connecting blocks 31 are fixedly connected to the two opposite side walls of the lifting seat 3. An avoidance groove is opened at the position of the lamp post 1 corresponding to the connecting block 31, and a stopper 11 is fixedly connected to the top of the avoidance groove. The cooperation between the connecting block 31 and the stopper 11 is used to limit the moving stroke of the lifting seat 3.

[0039] Reference Figure 1 and Figure 2 , there are several storage slots on the lifting seat 3. In this embodiment, two storage slots are taken as an example, and the two storage slots are arranged opposite to each other. A lifting member 12 for driving the lifting seat 3 to move is arranged in the lamp post 1. The lifting member 12 is an electric push rod. The lifting member 12 is installed in the lamp post 1. A first inspection door is arranged at the position of the lamp post 1 corresponding to the lifting member 12. The output end of the lifting member 12 is fixedly connected to the lifting seat 3. A photovoltaic panel 32 is installed at the top of the lifting seat 3. A battery box 13 is installed at the bottom of the lamp post 1. The battery box 13 has a built-in controller. The photovoltaic panel 32 and the lifting member 12 are both electrically connected to the controller. A second inspection door is arranged at the position of the lamp post 1 corresponding to the battery box 13. There are several ventilation slots on the lamp post 1 for assisting the heat dissipation of the battery box 13.

[0040] Reference Figure 2 and Figure 4, a connecting seat 21 is hinged at one end of the lighting lamp 2, a locking groove is provided on the receiving groove, and the connecting seat 21 is embedded in the locking groove. Two sets of locking components 4 are arranged between the connecting seat 21 and the lifting seat 3, and the locking component 4 includes a rotating frame 41, a limiting arc rod 42, a fixed round block 43 and a moving block 44. A receiving groove is provided on the connecting seat 21, and the moving block 44 is arranged in the receiving groove. An adjustment component 5 is arranged in the receiving groove, and the adjustment component 5 includes an adjusting bolt 51 and a limiting block 52. The limiting block 52 is fixedly connected to several blocks on the moving block 44, and two blocks are taken as an example in this embodiment. A limiting groove is provided at the position of the containing groove corresponding to the limiting block 52, and the limiting block 52 is slidably fitted in the limiting groove. A mounting block is fixedly connected at the notch of the containing groove, and the adjusting bolt 51 is rotatably connected to the mounting block. The adjusting bolt 51 passes through the moving block 44 and is threadedly fitted with the moving block 44.

[0041] Reference Figure 2 and Figure 4 One end of the rotating frame 41 is rotatably connected to the moving block 44, and the limiting arc rod 42 is fixedly connected to the other end of the rotating frame 41. A connecting groove is provided at the position of the lifting seat 3 corresponding to the moving block 44, and the fixed round block 43 is fixedly connected in the connecting groove. A limiting arc groove matching the shape of the limiting arc rod 42 is provided on the arc wall of the fixed round block 43. When stored, a gap is left between the top of the lighting lamp 2 and the top of the storage groove.

[0042] When locking the connecting seat 21, the staff will embed the connecting seat 21 in the locking groove, and then rotate the adjusting bolt 51 to move the moving block 44, drive the moving frame to move to the specified position, and then rotate the moving frame to make the limiting arc rod 42 enter the connecting groove, and then rotate the adjusting bolt 51 in the opposite direction to make the moving block 44 move in the opposite direction, drive the limiting arc rod 42 to move, until the limiting arc rod 42 is partially embedded in the limiting arc groove, so that the connecting seat 21 is pressed against the lifting seat 3, and the installation of the connecting seat 21 is realized.

[0043] Reference Figure 2 and Figure 5 A pushing assembly 6 is provided on the lifting seat 3, and the pushing assembly 6 includes a fixed tube 61, a pushing column 62, a pushing plate 63 and a pushing spring 64. The fixed tube 61 is inserted between the two receiving grooves, and the two ends of the fixed tube 61 are opened and fixedly connected with a limiting ring. The pushing plate 63 slides in the fixed tube 61, one end of the pushing column 62 is fixedly connected to the pushing plate 63, and the other end slides with the limiting ring. The pushing spring 64 is arranged in the fixed tube 61 and is located between the two pushing plates 63. When the lighting lamp 2 completely enters the receiving groove, the other end of the pushing column 62 presses against the lighting lamp 2, and the pushing spring 64 is in a compressed state.

[0044] The staff uses the force of the push spring 64 to apply pressure to the push plate 63, so that the push column 62 presses against the lighting lamp 2. When the lighting lamp 2 is partially moved out of the lamp column 1, the lighting lamp 2 rotates under the influence of the push column 62, and then gradually rotates under its own weight, achieving the effect of the push component 6 assisting in pushing the lighting lamp 2 to rotate.

[0045] Reference Figure 6 and Figure 7 The top of the lamp post 1 is rotatably connected to the position of the lighting lamp 2. The rubber roller 14 is used to assist in resisting the lighting lamp 2 to reduce the possibility of damage to the surface of the lighting lamp 2 due to friction when the lighting lamp 2 rotates. A voice control module 15 and a plurality of thermal imagers 16 are installed on the surface of the lamp post 1. The lighting lamp 2 has an ambient light built in. The voice control module 15, the thermal imager 16 and the ambient light are all electrically connected to the controller.

[0046] The street lamp of this embodiment is mainly applicable to, but not limited to, parks, leisure squares and other recreational places, and is not applicable to roads where vehicles are traveling.

[0047] The implementation principle of a street lamp in an embodiment of the present application is as follows: when the voice control module 15 detects a sound and the thermal imager 16 detects a heat source, the voice control module 15 and the thermal imager 16 both send an electrical signal to the controller, so that the control system controls the electric push rod to start, so that the lifting seat 3 rises. In this process, the push column 62 is pressed by the ejection spring force to press the lighting lamp 2, so that the lighting lamp 2 rotates during the rising process, and the lighting lamp 2 hits the rubber roller 14. Then the lighting lamp 2 is separated from the lamp post 1 and is in a horizontal state. If the sound is lower than or equal to the specified decibel of the voice control module 15 at this time, the atmosphere lamp is powered on. If the sound is higher than the specified decibel of the voice control module 15, the lighting lamp 2 is powered on. After a period of time, when there is no sound around and no thermal imaging, the voice control module 15 and the thermal imager 16 both send an electrical signal to the controller, so that the control system starts the electric push rod to lower the lifting seat 3. When the lighting lamp 2 descends, it hits the rubber roller 14 and rotates until the lifting seat 3 completely enters the lamp post 1, thereby achieving the effect of automatic use and storage of the lighting lamp 2.

[0048] The staff realizes the use and storage of the lighting lamp 2 through the cooperation of the lifting member 12 and the lifting seat 3, so that the lighting lamp 2 can be stored in the lamp post 1 when it is not needed for lighting, and the dust on the surface of the lighting lamp 2 will be scraped off during the flipping process. At the same time, inside the lamp post 1, the possibility of the lighting lamp 2 being affected by external rain or morning dew and the dirt covering the lighting lamp 2 is reduced. On the one hand, the lighting lamp 2 maintains a good lighting effect, and on the other hand, the internal temperature of the lighting lamp 2 is normalized, so that the internal filament of the lighting lamp 2 maintains a normal consumption process. Compared with the existing technology, the possibility of filament breakage is reduced, and the service life of the lighting lamp 2 is extended.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A street lamp, characterized in that: The invention comprises a lamp post (1) and a lighting lamp (2), wherein a lifting seat (3) and a lifting member (12) for driving the lifting seat (3) to move are arranged in the lamp post (1), a plurality of storage slots are opened on the lifting seat (3), the lighting lamp (2) is rotatably connected in the storage slots, and a driving component (6) for driving the lighting lamp (2) to rotate is arranged on the lifting seat (3). When lighting, the lifting seat (3) and the lighting lamp (2) are both located outside the lamp post (1), and the lighting lamp (2) is in a horizontal state. When stored, the lifting seat (3) is in a horizontal state. The lowering seat (3) and the illuminating lamp (2) are both located inside the lamp post (1), and the illuminating lamp (2) is in a vertical state; a connecting seat (21) is provided on the lifting seat (3), and one end of the illuminating lamp (2) is rotatably connected to the connecting seat (21); a locking assembly (4) is provided on the lifting seat (3), and the locking assembly (4) comprises a rotating frame (41), a limiting arc rod (42), a fixed round block (43) and a moving block (44); the moving block (44) is slidably matched on the connecting seat (21), and the connecting seat (21) is connected to the lowering seat (3). The connecting seat (21) is provided with an adjusting component (5) for adjusting the position of the moving block (44); one end of the rotating frame (41) is rotatably connected to the moving block (44); the limiting arc rod (42) is connected to the other end of the rotating frame (41); the fixed round block (43) is connected to the position of the lifting seat (3) corresponding to the rotating frame (41); the surface of the fixed round block (43) is provided with a limiting arc groove matching the shape of the limiting arc rod (42); when the connecting seat (21) is locked, the limiting arc rod (42) is partially embedded in the limiting arc groove; the adjusting assembly (5) includes an adjusting bolt (51) and a limiting block (52), the limiting block (52) is connected to the moving block (44), the limiting groove is opened on the connecting seat (21), the moving block (44) is slidably engaged in the limiting groove through the limiting block (52), the adjusting bolt (51) is rotatably connected to the connecting seat (21), and the adjusting bolt (51) passes through the moving block (44) and is threadedly engaged with the moving block (44).

2. The street lamp according to claim 1, characterized in that: The pushing assembly (6) comprises a fixed tube (61), a pushing column (62), a pushing plate (63) and a pushing spring (64). Two receiving grooves are provided, and the two receiving grooves are arranged opposite to each other. The fixed tube (61) is inserted between the two receiving grooves. Both ends of the fixed tube (61) are opened and connected with limiting rings. The pushing plates (63) are slidably matched with two pieces in the fixed tube (61). One end of the pushing column (62) is connected to the pushing plate (63), and the other end is slidably matched with the limiting ring. The pushing spring (64) is arranged in the fixed tube (61) and is located between the two pushing plates (63). When the lighting lamp (2) is stored, the pushing column (62) contacts the lighting lamp (2), and the pushing spring (64) is in a compressed state.

3. The street lamp according to claim 1, characterized in that: A photovoltaic panel (32) is installed on the top of the lifting seat (3), a battery box (13) is installed in the lamp post (1), a controller is built in the battery box (13), and the photovoltaic panel (32) and the lighting lamp (2) are both electrically connected to the controller.

4. The street lamp according to claim 3, characterized in that: A plurality of thermal imagers (16) are installed on the lamp post (1); the lighting lamp (2) has a built-in atmosphere lamp; the power consumption of the atmosphere lamp is lower than that of the lighting lamp (2); and the atmosphere lamp and the thermal imager (16) are both electrically connected to the controller.

5. The street lamp according to claim 3, characterized in that: A voice control module (15) is installed on the lamp post (1), and the voice control module (15) is electrically connected to the controller.

6. The street lamp according to claim 1, characterized in that: A rubber roller (14) is rotatably connected to the top of the lamp post (1) at a position corresponding to the lighting lamp (2).

7. The street lamp according to claim 1, characterized in that: The bottom end of the lifting seat (3) is connected to a connecting block (31), an escape groove is provided on the inner wall of the lamp post (1) at a position corresponding to the connecting block (31), the connecting block (31) is slidably fitted in the escape groove, and a stopper (11) is connected to the top end of the escape groove.

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