Induction type city LED street lamp

Abstract

The utility model discloses an inductive city LED street lamp relates to city lighting technical field. It includes the installation board with the opening, the support plate, the rotating rod, the installation roll of the sleeve in the rotating rod, the lamp plate and the drive assembly, and installation roll is equipped with the screw thread curved slide groove, and the drive assembly contains the power suite, the moving pole and the ball head, and the ball head and the slide groove are adapted to slide, the installation board is connected L shape lamp stand, and the lamp stand is equipped with the compound sensor, and the sensor is connected through the electrical control system with the drive motor, the lamp plate with the singlechip as the core. Sensor accurate detection pedestrian and vehicle, and control system receives signal, and control lamp plate on-off and drive assembly action, and through the ball head and the slide groove cooperation drive installation roll rotation, realize lamp plate irradiation angle self -adaptation adjustment. The utility model discloses stable structure, adjusts smoothly, can accurate matching road lighting demand, reduces the waste of electric energy, improves the intelligentization and energy -saving nature of city lighting.

Description

Technical Field

[0001] This utility model relates to the field of urban lighting technology, and in particular to an induction-type urban LED street light. Background Technology

[0002] As a crucial component of municipal infrastructure, urban streetlights play a vital role in providing nighttime road illumination and ensuring travel safety. Currently, most urban LED streetlights on the market employ fixed-angle lighting designs. Once installed, the direction and range of the light panel are difficult to adjust, making it impossible to flexibly adapt to changes in road width, pedestrian flow, and lighting needs in special scenarios (such as intersection corners and pedestrian areas). This can easily lead to problems such as excessive lighting in some areas causing energy waste, and insufficient lighting in others creating blind spots.

[0003] Meanwhile, traditional LED streetlights are mostly in a continuous, always-on mode, maintaining the same brightness regardless of whether there are pedestrians or vehicles on the road. This results in a significant amount of wasted energy, which is inconsistent with the current urban development concept of energy conservation and emission reduction. Although some sensor-operated streetlights have human or vehicle sensing functions, they often only achieve on / off control or simple brightness adjustment, lacking a mechanism for coordinated adaptation with the lighting angle. This still results in insufficient lighting accuracy and low energy utilization. In addition, the driving structure of existing sensor-operated streetlights is relatively complex, and problems such as jamming and poor positioning accuracy are prone to occur during adjustment, affecting the stability and lifespan of use. Utility Model Content

[0004] The purpose of this utility model is to provide an induction-type urban LED street light, which aims to solve the problems of existing urban LED street lights having fixed lighting angles, being unable to flexibly adapt to different lighting needs, having limited sensing functions, low energy utilization, and unstable adjustment structures.

[0005] To achieve the above objectives, this utility model employs an induction-type urban LED street light, comprising a mounting plate with openings on both sides, with support plates at both ends of each opening, and a rotating rod between the two support plates. A hollow mounting roller is fitted onto the rotating rod, and a lamp plate is positioned on the lower side of the mounting roller. A drive assembly for controlling the rotation of the two mounting rollers is provided on the mounting plate. Each of the two mounting rollers has a threaded, curved groove at one end. The drive assembly includes a power kit mounted on the mounting plate, with a moving rod on the power kit. Both ends of the moving rod are welded with ball heads, which are adapted to and slide in contact with the grooves.

[0006] The power kit includes a support frame, one end of which is equipped with a drive motor. The output end of the drive motor is provided with a threaded rod extending into the support frame. The threaded rod is threadedly connected to a connecting seat in the middle of the moving rod. Guide posts are welded to both ends of the support frame. The guide posts are located on the horizontal side of the threaded rod and slide through the connecting seat.

[0007] The mounting plate is provided with a top cover, and both ends of the top cover have curved surfaces, which cover the two mounting rollers respectively. The curvature of the curved surfaces is adapted to the rotating rollers.

[0008] The mounting plate has a connecting frame at one end, and an L-shaped lamp holder is welded to the end of the connecting frame away from the mounting plate.

[0009] The vertical section of the lamp holder, near the mounting plate, is equipped with a sensor for monitoring the presence of pedestrians.

[0010] Beneficial effects: The lighting angle is flexible and adjustable, with strong adaptability: Through the cooperative design of the drive component and the mounting roller, when the drive motor drives the threaded rod to rotate, the connecting seat moves horizontally along the guide column, which in turn causes the ball heads at both ends of the moving rod to slide within the threaded curved grooves of the mounting roller, forcing the mounting roller to rotate around the rotating rod, thus achieving precise adjustment of the illumination angle of the lamp panel. The illumination direction and range of the lamp panel can be flexibly adjusted according to changes in road width and lighting needs, effectively eliminating blind spots, avoiding over-illumination, and improving lighting adaptability.

[0011] Sensor-based collaborative control for energy saving and environmental protection: The sensors on the light fixture can monitor whether there are pedestrians or vehicles on the road in real time. When pedestrians or vehicles are detected, the sensors send signals to control the light panel to switch to high light mode. At the same time, the angle of the light panel can be adjusted by the drive components according to the distribution of pedestrian and vehicle traffic to achieve precise lighting. When no pedestrians or vehicles are detected on the road, the light panel automatically switches to low light mode or maintains the current angle for low power consumption, which greatly reduces the consumption of unnecessary power and conforms to the concept of energy conservation and emission reduction.

[0012] Stable and reliable structure with long service life: The drive assembly adopts a structure with threaded rod and guide column to ensure the stability and accuracy of the connecting seat movement. The sliding contact between the ball head and the slide groove reduces friction and jamming during the adjustment process, improving the smoothness of adjustment. The waterproof and corrosion-resistant design of the top cover and the wear-resistant and lubricated structure at the rotating rod and guide column effectively protect the internal components from environmental erosion and wear, extending the overall service life of the equipment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the induction-type urban LED street light of this utility model.

[0015] Figure 2 This is a structural schematic diagram of the lamp plate and mounting plate of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure below the top cover of this utility model.

[0017] 101-Lamp holder, 102-Sensor, 103-Connecting frame, 104-Mounting plate, 105-Support frame, 106-Drive motor, 107-Threaded rod, 108-Guide column, 109-Connecting seat, 110-Moving rod, 111-Ball head, 112-Slide groove, 113-Support plate, 114-Rotating rod, 115-Mounting roller, 116-Lamp panel, 117-Top cover. Detailed Implementation

[0018] Please see Figures 1-3 ,in, Figure 1 This is a structural schematic diagram of the induction-type urban LED street light of this utility model. Figure 2 This is a structural schematic diagram of the lamp plate and mounting plate of this utility model. Figure 3 This is a schematic diagram of the structure below the top cover of this utility model.

[0019] This utility model provides an induction-type urban LED street light, including a mounting plate 104 with openings on both sides. Support plates 113 are provided at both ends of the openings. A rotating rod 114 is provided between the two support plates 113. A hollow mounting roller 115 is sleeved on the rotating rod 114. A lamp plate 116 is provided on the lower side of the mounting roller 115. A drive assembly for controlling the rotation of the two mounting rollers 115 is provided on the mounting plate 104. A threaded, curved groove 112 is provided at one opposite end of each of the two mounting rollers 115. The drive assembly includes a power kit mounted on the mounting plate 104. A moving rod 110 is provided on the power kit. Ball heads 111 are welded to both ends of the moving rod 110. The ball heads 111 are adapted to the grooves 112 and slide in contact with the grooves 112.

[0020] In this embodiment, the mounting plate 104 is made of high-strength cold-rolled steel plate, possessing sufficient load-bearing capacity to support the overall structure. The width of its two side openings matches the length of the mounting roller 115, ensuring that the mounting roller 115 will not shift or jam when rotating. The support plate 113 is fixed to the mounting plate 104 by full welding, and reinforcing ribs are added at the bottom connection to further improve the support stability and prevent deformation due to stress after long-term use. The rotating rod 114 is made of high-quality round steel, with a surface treated for corrosion resistance and wear resistance. Both ends are connected to the support plate 113 through bearings, ensuring smooth rotation and reducing wear from long-term use, thus extending the service life of the components.

[0021] In this embodiment, the mounting roller 115 is made of seamless steel pipe, which is sturdy and lightweight, facilitating flexible rotation. A reasonable gap is reserved between the inner wall of the mounting roller 115 and the rotating rod 114 to ensure unimpeded rotation while preventing excessive gap from causing the mounting roller 115 to wobble. The lamp plate 116 is fixed to the lower side of the mounting roller 115 with bolts evenly distributed to ensure a secure installation of the lamp plate 116. A heat-conducting pad is placed between the lamp plate 116 and the mounting roller 115 to quickly conduct the heat generated by the lamp plate 116 during operation, preventing overheating from affecting its performance or causing damage. The lamp plate 116 uses a substrate material with high thermal conductivity, and the LED beads welded to its surface are carefully selected to ensure suitable color temperature and high color rendering index, providing clear and natural lighting effects to meet the needs of urban road lighting. The lamp plate 116 maintains a stable lighting brightness at all times.

[0022] Furthermore, the power kit includes a support frame 105, which is integrally formed from an aluminum alloy profile, combining lightweight and high strength characteristics. This reduces the overall structural weight while providing stable support. One end of the support frame 105 is bolted to a drive motor 106. The drive motor 106 is a DC geared motor, with its rated voltage, power, and reduction ratio designed to ensure sufficient output torque to drive the mounting roller 115 to rotate, while achieving a slow and smooth adjustment speed to avoid unstable lighting caused by excessively rapid angle adjustments. The output end of the drive motor 106 is connected to a threaded rod 107 via a coupling. The threaded rod 107 is a trapezoidal threaded screw with high thread precision, ensuring the accuracy of the movement of the connecting seat 109 and reducing adjustment errors.

[0023] In this embodiment, the connecting seat 109 is injection molded from a wear-resistant material, and has a threaded hole inside that matches the threaded rod 107. Guide sleeves are provided at both ends of the threaded hole to reduce frictional loss between the threaded rod 107 and the connecting seat 109. The connecting seat 109 and the moving rod 110 are fixed by welding. The moving rod 110 is made of stainless steel, which has good strength and corrosion resistance. The ball heads 111 at both ends are made of high-strength bearing steel and are hardened, resulting in high hardness and strong wear resistance, capable of withstanding the pressure and friction when in contact with the slide groove 112. The slide groove 112 is precision machined, with a reasonable design for groove width, depth, and thread helix angle, and a uniform and smooth spiral trajectory, ensuring that the ball heads 111 slide smoothly in the slide groove 112 without jamming, thus achieving smooth rotation of the mounting roller 115.

[0024] Furthermore, the guide post 108 is made of stainless steel with a finely polished surface, resulting in low roughness and reducing sliding friction with the connecting seat 109. Both ends of the guide post 108 are firmly fixed to the support frame 105 and maintain a reasonable center distance from the threaded rod 107, ensuring smooth movement of the connecting seat 109 along the guide post 108 and preventing offset, thus guaranteeing the accuracy of angle adjustment. A linear bearing is embedded in the portion of the guide post 108 that passes through the connecting seat 109, further reducing sliding friction, improving the smoothness of the connecting seat 109's movement, and reducing component wear.

[0025] In this embodiment, the top cover 117 is made of die-cast aluminum alloy with a surface coated with an anti-corrosion coating, providing excellent weather resistance, water resistance, and corrosion resistance, effectively resisting the erosion of external environmental factors such as rainwater, dust, and ultraviolet rays. The curved surfaces at both ends of the top cover 117 are adapted to the shape of the mounting roller 115, and sealing strips are pasted on the inner side of the curved surfaces. The sealing strips are made of a material with good elasticity and strong sealing performance. When the mounting roller 115 rotates, the sealing strips are always in close contact with the surface of the mounting roller 115, preventing rainwater, dust, and other impurities from entering the internal structure and protecting the drive assembly and the mounting roller 115 from damage.

[0026] Furthermore, one end of the mounting plate 104 is fixed to the connecting bracket 103 by full welding. The connecting bracket 103 is made of channel steel, which has high strength. A triangular reinforcing plate is set at the weld point with the mounting plate 104 to further improve the connection strength and prevent loosening after long-term use. The end of the connecting bracket 103 away from the mounting plate 104 is welded and fixed to the L-shaped lamp holder 101. The lamp holder 101 is made of seamless steel pipe, which is sturdy. A flange is set at the bottom of the lamp holder 101, and mounting holes are opened on the flange to facilitate the overall fixing of the street light to the street light pole, making the installation convenient and secure.

[0027] In this embodiment, sensor 102, as the core component of street light sensing control, is a composite sensor combining infrared human body sensing and microwave vehicle sensing. This type of sensor integrates the advantages of two detection technologies: infrared human body sensing technology identifies pedestrians by detecting the infrared radiation emitted by the human body, while microwave vehicle sensing technology utilizes the Doppler effect to accurately identify the movement trajectory of vehicles (including motor vehicles and non-motor vehicles) by emitting microwave signals and receiving frequency changes in reflected signals. Sensor 102 has a detection range of 0-8m, covering the width of the main pedestrian and vehicle lanes on urban roads; its detection angle is 120°, and by adjusting the bracket angle, it can achieve full coverage of the area below and in front of the street light, avoiding blind spots. Simultaneously, sensor 102 has a built-in anti-interference module that effectively filters interference from direct sunlight, swaying leaves, wind, rain, and other environmental factors, reducing the probability of false triggering and ensuring the accuracy of the detection results. Sensor 102's operating voltage is compatible with the street light's DC power supply system, and its response time is ≤0.5s, enabling it to quickly detect the appearance and departure of objects on the road, ensuring timely execution of subsequent control actions.

[0028] From an electrical control perspective, the entire street light control system uses a built-in STM32 series microcontroller as the core control unit, constructing a complete control link of "sensor 102 signal acquisition - data processing - actuator driving". Specifically, the sensor 102 and the microcontroller interact via the I2C communication protocol. The sensor 102 transmits the detected "presence or absence of a passing object" signal (output in high or low level form) to the microcontroller in real time. The microcontroller has a pre-set control logic program that first filters and judges the validity of the received signal, eliminates instantaneous interference signals, and after confirming that the signal is a valid trigger, generates the corresponding control command according to the preset control rules.

[0029] For controlling the drive motor 106, the microcontroller outputs a PWM (Pulse Width Modulation) signal to the motor drive module (using the L298N driver chip). This module converts the low-power control signal output by the microcontroller into a high-power drive signal, enabling the start / stop, forward / reverse rotation, and speed regulation of the DC geared motor. For example, when the microcontroller receives a "passing object" signal from the sensor 102, it outputs a forward PWM signal, driving the motor 106 to rotate the threaded rod 107, thereby adjusting the angle of the lamp board 116. When it receives a "no passing object" signal and meets the delay condition, it outputs a reverse PWM signal, driving the motor 106 to reset the lamp board 116. Simultaneously, the motor drive module has a built-in overcurrent protection function. When the motor load is too high (such as a sudden increase in current due to mechanical jamming), it automatically cuts off the output to prevent motor burnout and ensure circuit safety.

[0030] For the control of the lamp board 116, the microcontroller controls the on / off state of the lamp board 116 through the control relay module. The normally open contact of the relay is connected in series in the power supply circuit of the lamp board 116. When the microcontroller outputs a high-level signal, the relay coil is energized, the normally open contact closes, and the lamp board 116 is powered on and begins to work; when the microcontroller outputs a low-level signal, the relay coil is de-energized, the contact opens, and the lamp board 116 stops working. To ensure the stability of the power supply to the lamp board 116, a voltage regulator module (using an LM1117 series voltage regulator) is also included in the circuit to stabilize the input DC voltage at the rated operating voltage of the lamp board 116, preventing voltage fluctuations from affecting the lifespan of the LED beads. In addition, the control unit also has a reserved communication interface (such as an RS485 interface), which can be expanded to connect to the city's smart lighting system to realize remote status monitoring (such as the working status of the lamp board 116, and the detection data of sensor 102) and remote control (such as manually adjusting the angle of the lamp board 116 and setting the sensitivity of sensor 102), improving the intelligent management level of streetlights.

[0031] The power supply of the entire electrical control system adopts a dual-protection design of "mains power conversion - energy storage backup": 220V mains power is converted into two DC voltages of 12V and 24V by a switching power supply, which power the sensor 102, the microcontroller (12V) and the drive motor 106 and the lamp board 116 (24V) respectively; at the same time, a lithium battery energy storage module is connected in parallel in the circuit. When the mains power is interrupted, the energy storage module can automatically switch the power supply to ensure the short-term operation of the sensor 102 and the control unit and avoid functional failure due to power failure.

[0032] Furthermore, the control unit is also equipped with a delay control function, which is implemented through a timer inside the microcontroller. When the sensor 102 switches from the "object present" state to the "object absent" state, the microcontroller starts the timer to begin timing. The timing duration can be preset by the program (the default is set to 30 seconds, which can be adjusted according to the frequency of road traffic). If the sensor 102 does not detect an object again during the timing period, the microcontroller will output the command to power off the light board 116 and reverse the motor after the timing ends. This avoids frequent switching on and off of the light board 116 and frequent starting and stopping of the motor due to the absence of an object for a short period of time (such as a pedestrian passing by quickly), reducing component wear and improving the user experience.

[0033] Working principle: In practical application, the street light device is first fixedly installed on the street light pole next to the city road through the flange at the bottom of the light holder 101. The 220V mains power is connected, and the switching power supply converts the mains power into 12V and 24V DC voltage, which power the sensor 102, control unit, drive motor 106 and light board 116 respectively. The system enters standby state. At this time, the light board 116 is in the power-off state, and the sensor 102 begins to monitor the road area in real time.

[0034] When sensor 102 detects a pedestrian or vehicle entering the monitoring range, it immediately transmits a valid trigger signal to the microcontroller. After signal verification, the microcontroller generates two control commands: one command controls the relay module to close, turning on the power to the lamp panel 116 to start lighting with stable brightness; the other command controls the motor drive module to output a forward rotation signal, starting the motor 106 and causing the threaded rod 107 to rotate forward. Since the connecting seat 109 is threadedly connected to the threaded rod 107 and limited by the guide post 108, the rotation of the threaded rod 107 is converted into the connecting seat 109 moving along the guide post 108 towards the mounting roller 115. The connecting seat 109 drives the moving rod 110 to move synchronously. The ball heads 111 at both ends of the moving rod 110 slide in the threaded curved groove 112 of the mounting roller 115. With the help of the spiral guiding effect of the groove 112, the mounting roller 115 is forced to rotate clockwise around the rotating rod 114, thereby causing the lamp panel 116 to deflect downward, accurately covering the road area where the object is located.

[0035] When a pedestrian or vehicle leaves the monitoring range, sensor 102 transmits a "no object passing" signal to the microcontroller. The microcontroller starts its internal timer to begin a delay. If no trigger signal is received again during the delay, the microcontroller generates a reset command after the timeout: one command controls the motor drive module to output a reverse signal, driving motor 106 to rotate the threaded rod 107 in the opposite direction. The connecting seat 109 moves along the guide post 108 away from the mounting roller 115, the ball head 111 slides in the opposite direction in the groove 112, the mounting roller 115 rotates counterclockwise around the rotating rod 114, and the lamp panel 116 gradually resets to the initial angle. After the lamp panel 116 has reset (the microcontroller determines the reset status by the motor rotation time), another command controls the relay module to disconnect, the lamp panel 116 is powered off, and the system returns to standby mode, waiting for the next trigger.

[0036] Throughout the operation, the overcurrent protection and anti-interference design of the electrical control system ensured the stability and safety of the circuit; the efficient collaboration between sensor 102 and control unit enabled the function of "lighting up when someone / vehicle is present, turning off after a delay when no one / vehicle is present + adaptive angle adjustment", which not only met the needs of road lighting, but also minimized energy waste, in line with the development requirements of urban green lighting.

[0037] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A sensor-activated urban LED street light, characterized in that, The device includes a mounting plate (104) with openings on both sides, with a support plate (113) at both ends of the openings, a rotating rod (114) between the two support plates (113), a hollow mounting roller (115) sleeved on the rotating rod (114), a lamp plate (116) on the lower side of the mounting roller (115), and a drive assembly for controlling the rotation of the two mounting rollers (115) on the mounting plate (104). Each of the two mounting rollers (115) has a threaded curved groove (112) at one end. The drive assembly includes a power kit on the mounting plate (104). The power kit has a moving rod (110). Both ends of the moving rod (110) are welded with ball heads (111). The ball heads (111) are adapted to the grooves (112) and slide in contact with the grooves (112).

2. The induction-type urban LED street light as described in claim 1, characterized in that, The power kit includes a support frame (105), one end of which is provided with a drive motor (106). The output end of the drive motor (106) is provided with a threaded rod (107) extending into the support frame (105). The threaded rod (107) is threadedly connected to a connecting seat (109) in the middle of the moving rod (110). Guide posts (108) are welded to both ends of the support frame (105). The guide posts (108) are located on the horizontal side of the threaded rod (107) and slide through the connecting seat (109).

3. The induction-type urban LED street light as described in claim 2, characterized in that, A top cover (117) is provided above the mounting plate (104). Both ends of the top cover (117) have curved surfaces and cover the two mounting rollers (115) respectively. The curvature of the curved surfaces is adapted to the mounting rollers (115).

4. The induction-type urban LED street light as described in claim 3, characterized in that, A connecting frame (103) is provided at one end of the mounting plate (104), and an L-shaped lamp holder (101) is welded to the end of the connecting frame (103) away from the mounting plate (104).

5. The induction-type urban LED street light as described in claim 4, characterized in that, A sensor (102) for monitoring the presence or absence of pedestrians is provided at one end of the vertical section of the lamp holder (101) near the mounting plate (104).

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