Intelligent dimming LED street lamp and luminous flux and color rendering index collaborative optimization method thereof

Abstract

The invention discloses an intelligent dimming LED street lamp and a luminous flux and color rendering index collaborative optimization method thereof, and belongs to the technical field of LED street lamps. The intelligent dimming LED street lamp comprises a lampshade and cooling fins evenly fixed to the top of the lampshade, LED lamp panels are evenly installed at the bottom of the lampshade, a control switch is installed at the inner top of the lampshade, and a variable resistor is installed at the inner end of the lampshade; the LED lamp panel, the control switch and the variable resistor are connected in series through wires, and a sliding mechanism for adjusting the resistance of the variable resistor is arranged at the front end of the lampshade. The LED lamp panel, the control switch and the variable resistor are connected in series, then a sliding mechanism composed of the control bin, the spiral bimetallic strip and the sliding rod is utilized, in the using process, according to the change of the temperature in the lampshade, mechanical transmission control over the brightness of the street lamp is conducted through physical deformation of materials, and compared with a sensor electronic control scheme, the brightness of the street lamp is controlled. The system has the remarkable advantages of no need of electric drive, high extreme environment adaptability, low maintenance cost, immediate passive response and the like.

Description

Technical Field

[0001] The present invention relates to an LED street lamp, in particular to an intelligent dimming LED street lamp and a method for synergistically optimizing its luminous flux and color rendering index. The present invention also relates to a dimming method, in particular to a method for synergistically optimizing the luminous flux and color rendering index of an intelligent dimming LED street lamp, belonging to the technical field of LED street lamps. Background Art

[0002] At present, during the use of intelligent dimming LED street lamps, most of them are electronically controlled through sensors. When using an electronic control scheme to adjust the brightness of street lamps, there is a strong dependence on the power system, and a stable power supply or energy storage device needs to be equipped. It is easy to fail in scenarios without power, power outage, or unstable power supply, and energy storage components such as batteries have problems of aging and attenuation. Its electronic components (sensors, chips, circuits) are prone to performance drift, short circuit, or failure in extreme environments (such as high humidity, strong vibration, or salt spray corrosion), and additional protection measures are required; the maintenance cost is relatively high. The lifespan of sensors and electronic modules is limited, and regular maintenance and replacement are required, especially when working on high-altitude lamp poles, which is difficult and costly; in addition, the complex software and hardware system may be affected by electromagnetic interference and cause misoperation, there are risks of software vulnerabilities, signal delay, or failure of the multi-sensor fusion strategy, and improper handling of electronic waste is likely to cause environmental pollution. Overall, there are limitations in minimalism, environmental adaptability, and long-term reliability.

[0003] Therefore, an intelligent dimming LED street lamp and a method for synergistically optimizing its luminous flux and color rendering index are designed to optimize the above problems. Summary of the Invention

[0004] The main objective of the present invention is to provide an intelligent dimming LED street lamp and a collaborative optimization method for its luminous flux and color rendering index. By connecting an LED lamp board, a control switch, and a variable resistor in series, and then using a sliding mechanism composed of a control chamber, a spiral bimetal strip, and a sliding rod, during use, according to the change in the temperature inside the lampshade, mechanical transmission is carried out using the physical deformation of the material to control the brightness of the street lamp. Compared with the sensor electronic control scheme, it has significant advantages such as no need for power drive, strong adaptability to extreme environments, low maintenance cost, and instant passive response. By symmetrically arranging protective shutters composed of an upper shutter, a lower shutter, a groove, a reset spring, and a rubber sealing plate at the top of the lampshade, it can form protection for the top of the lampshade during use. Moreover, the upper shutter and the lower shutter are hinged, and the lower shutter can automatically swing downward in snowy weather, effectively avoiding snow accumulation. Additionally, when the protective shutter is in use, it is used in conjunction with a rotating mechanism composed of a vertical rod, a slot, a worm, a worm gear, a rotating rod, and a protective cover. The sliding rod slides vertically inside the slot, so that when the temperature inside the lampshade is too high, the protective shutter can be automatically controlled to rotate upward, and the protective shutter can be used as a wind guide plate to guide the flowing gas to directly blow on the heat sink, improving the heat dissipation effect during use. By providing an inner sleeve and an outer sleeve at the end of the lampshade, and then cooperating with a telescopic mechanism composed of an adjustment chamber, a screw rod, a threaded hole, a shaft rod, an impeller, an air inlet cover, a first bevel gear, a first hairspring, a second bevel gear, a ratchet, a chute, a rack, a driven gear, a mounting rod, a door panel, a second hairspring, a telescopic slot, a trapezoidal insert block, and an extrusion spring, during the use of the street lamp, by the transmission cooperation of mechanical parts, according to the magnitude of the wind speed, the inner sleeve can be controlled to slide inside the outer sleeve, adjusting the length of the support arm to protect the street lamp and improving the functionality of use.

[0005] The objective of the present invention can be achieved by adopting the following technical solutions:

[0006] An intelligent dimming LED street lamp, comprising a lampshade and heat sinks uniformly fixed on the top of the lampshade;

[0007] The bottom of the lampshade is uniformly equipped with an LED lamp board, the inner top of the lampshade is equipped with a control switch, the inner end of the lampshade is equipped with a variable resistor, the LED lamp board, the control switch, and the variable resistor are connected in series through wires, and a sliding mechanism for adjusting the resistance of the variable resistor is provided at the front end of the lampshade, and the sliding mechanism controls the sliding of the drag block on the variable resistor through the change in the temperature inside the lampshade;

[0008] Both sides of the top of the lampshade are provided with brackets, and protective shutters are rotatably installed on the brackets. The two groups of protective shutters are symmetrical to each other, and a rotating mechanism for controlling the relative swing of the protective shutters is provided at the front end of the top of the lampshade;

[0009] The end of the lampshade is fixed with an inner sleeve, and the end of the inner sleeve is horizontally slidably provided with an outer sleeve. One end of the lampshade close to the inner sleeve is provided with a telescopic mechanism, and the telescopic mechanism controls the inner sleeve to slide inside the outer sleeve.

[0010] Preferably: The telescopic mechanism includes a control chamber, a spiral bimetal sheet, and a sliding rod. The control chamber is opened inside the lampshade. The bottom end of the control chamber is fixed with a spiral bimetal sheet. The top end of the spiral bimetal sheet is vertically fixed with a sliding rod. The drag block on the variable resistor is rotatably connected to the sliding rod through a bearing.

[0011] Preferably: The sliding mechanism includes a vertical rod, a slot, a worm, a worm gear, a rotating rod, and a shield. The top end of the control chamber is vertically rotatably installed with a vertical rod. The inner bottom end of the vertical rod is provided with a slot. The sliding rod is vertically slidably arranged inside the slot. The top end of the vertical rod is fixed with a worm. The rotating rods are rotatably installed on the brackets. One end of the rotating rod is fixedly connected to the protective shutter. The other end of the rotating rod is fixed with a worm gear meshing with the worm. A shield is provided at the top of the lampshade and outside the worm gear.

[0012] Preferably: The protective shutter includes an upper shutter, a lower shutter, a groove, and a return spring. The end of the upper shutter is fixedly connected to the rotating rod. The bottom end of the upper shutter is hingedly installed with a lower shutter. Grooves are opened on the opposite sides of the upper shutter and the lower shutter. A return spring is fixed between the ends of the two grooves.

[0013] Preferably: A rubber sealing plate is arranged along the length direction on the side edge of the upper shutter, and the rubber sealing plates on the outer sides of the two upper shutters are mutually attached.

[0014] Preferably: The telescopic mechanism includes an adjustment chamber, a screw rod, a threaded hole, and a driving component. The adjustment chamber is opened at the end of the inside of the lampshade. The end of the lampshade is rotatably installed with a screw rod through a bearing. One end of the screw rod is located inside the adjustment chamber, and the other end of the screw rod passes through the inside of the inner sleeve. A threaded hole matching with the screw rod is opened inside the outer sleeve. A driving component for controlling the rotation of the screw rod is arranged inside the adjustment chamber.

[0015] Preferably: The driving component includes a shaft rod, an impeller, an air inlet cover, a first bevel gear, a first clockwork spring, a second bevel gear, and a positioning release part. The shaft rod is vertically rotatably installed at the bottom end of the adjustment chamber. The top end of the shaft rod extends to the top of the lampshade. An impeller is installed at the top end of the shaft rod. An air inlet cover is arranged outside the impeller. Air ports are evenly opened on the outer side of the air inlet cover. A first bevel gear is fixed at the inner top of the adjustment chamber where the shaft rod is located. A first clockwork spring is fixed between the bottom end of the shaft rod and the inner wall of the adjustment chamber. A second bevel gear meshing with the first bevel gear is installed at the end of the screw rod. A positioning release part for controlling the one-way rotation and reset of the shaft rod is arranged inside the adjustment chamber.

[0016] Preferably, the positioning and releasing member includes a ratchet wheel, a sliding groove, a rack, a driven gear, a mounting rod, a door plate, a second clockwork spring, a telescopic groove, a trapezoidal insert block and a compression spring. The ratchet wheel is horizontally fixed on the shaft rod. Sliding grooves are evenly arranged in an annular array on the side of the adjustment chamber. Racks are slidably arranged inside the sliding grooves. Driven gears are meshingly installed on the sides of the racks. Mounting rods are fixed to the tops of the driven gears. The mounting rods extend to the air ports inside the air inlet hood. The mounting rods are rotatably connected to the air inlet hood. A door plate for blocking the air ports is fixed to the top of the mounting rod. A second clockwork spring is provided between the mounting rod and the side of the sliding groove. Telescopic grooves are formed at one ends of the racks close to the ratchet wheel. Trapezoidal insert blocks are slidably arranged inside the telescopic grooves. Compression springs are provided between the trapezoidal insert blocks and the inner ends of the telescopic grooves.

[0017] Preferably, wear-resistant coatings are applied to one ends of the trapezoidal insert blocks close to the ratchet wheel. The trapezoidal insert blocks are distributed in an annular array. There are four groups of trapezoidal insert blocks, and the included angle between adjacent trapezoidal insert blocks is 90°.

[0018] The present invention also provides a method for synergistically optimizing the luminous flux and color rendering index of an intelligent dimming LED street lamp, including the following steps:

[0019] Step 1: During installation, the end of the outer sleeve is fixed on the lamp post. The LED lamp board is powered on and generates heat. Part of the heat diffuses outward through the heat sink. The heat that is not dissipated in time causes the temperature inside the lamp cover to rise.

[0020] Step 2: When the temperature inside the lamp cover rises and exceeds the threshold of 70 °C, the telescopic mechanism controls the slider on the variable resistor to slide, increasing the resistance on the variable resistor and reducing the usage brightness of the LED lamp board. After the temperature inside the lamp cover drops, the telescopic mechanism controls the slider on the variable resistor to reset, reducing the resistance on the variable resistor and increasing the usage brightness of the LED lamp board.

[0021] Step 3: When the brightness of the LED lamp board decreases, the rotating mechanism controls the two protective shutters to rotate in opposite directions. After the two protective shutters rotate, they form a V shape, guiding the horizontally flowing air towards the heat sink direction and accelerating the cooling rate.

[0022] Step 4: In strong wind weather, the sliding mechanism is driven by the wind force to control the inner sleeve to slide inside the outer sleeve, shortening the lamp arm to reduce wind resistance and decreasing the lighting radius. When the wind is small, the sliding mechanism controls the inner sleeve to reset, extending the lamp arm and increasing the lighting radius.

[0023] The beneficial effects of the present invention are:

[0024] An intelligent dimming LED street lamp provided by the present invention and a method for synergistically optimizing luminous flux and color rendering index. By connecting an LED lamp board, a control switch, and a variable resistor in series, and then using a sliding mechanism composed of a control chamber, a spiral bimetal sheet, and a sliding rod, during use, according to the change in the temperature inside the lampshade, mechanical transmission is carried out using the physical deformation of the material to control the brightness of the street lamp. Compared with the sensor electronic control scheme, it has significant advantages such as no need for power drive, strong adaptability to extreme environments, low maintenance cost, and instant passive response;

[0025] By symmetrically arranging a protective shutter composed of an upper shutter, a lower shutter, a groove, a return spring, and a rubber sealing plate at the top of the lampshade, protection can be formed for the top of the lampshade during use. The upper shutter and the lower shutter are hinged, and the lower shutter can be automatically adjusted to swing downward in snowy weather, effectively avoiding snow accumulation. In addition, when the protective shutter is in use, it is used in conjunction with a rotating mechanism composed of a vertical rod, a slot, a worm, a worm wheel, a rotating rod, and a protective cover. The sliding rod slides vertically inside the slot, so that when the temperature inside the lampshade is too high, the protective shutter can be automatically controlled to rotate upward, and the protective shutter is used as a wind guide plate, which can guide the flowing gas to directly blow on the heat sink, improving the heat dissipation effect during use;

[0026] By providing an inner sleeve and an outer sleeve at the end of the lampshade, and then cooperating with a telescopic mechanism composed of an adjustment chamber, a screw rod, a threaded hole, a shaft rod, an impeller, an air inlet cover, a first bevel gear, a first clockwork spring, a second bevel gear, a ratchet, a chute, a rack, a driven gear, a mounting rod, a door panel, a second clockwork spring, a telescopic groove, a trapezoidal insert block, and a compression spring, during the use of the street lamp, through the transmission cooperation of mechanical parts, the inner sleeve can be controlled to slide inside the outer sleeve according to the wind speed, adjust the length of the support arm, protect the street lamp, and improve the functionality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view cross-sectional view of a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention;

[0028] Figure 2 It is a front view of a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention;

[0029] Figure 3 It is a partial structural diagram of the end of the lampshade of a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention;

[0030] Figure 4 It is a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention Figure 1 Enlarged view at A;

[0031] Figure 5 In a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention Figure 1 The enlarged view at position B in;

[0032] Figure 6 In a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention Figure 3 The enlarged view at position C in;

[0033] Figure 7 The structural diagram of the protective shield in a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention;

[0034] Figure 8 The circuit control diagram of a preferred embodiment of an intelligent dimming LED street lamp and a method for synergistically optimizing luminous flux and color rendering index of the present invention.

[0035] In the figure: 1, lamp cover; 101, heat sink;

[0036] 2, LED lamp board; 3, control switch; 4, variable resistor;

[0037] 5, sliding mechanism; 501, control chamber; 502, spiral bimetal; 503, slide rod;

[0038] 6, bracket;

[0039] 7, protective shield; 701, upper shield; 702, lower shield; 703, groove; 704, return spring; 705, rubber seal plate;

[0040] 8, rotating mechanism; 801, vertical rod; 802, slot; 803, worm; 804, worm wheel; 805, rotating rod; 806, protective cover;

[0041] 9, inner sleeve;

[0042] 10, outer sleeve;

[0043] 11, telescopic mechanism; 1101, adjustment chamber; 1102, screw; 1103, threaded hole; 1104, shaft rod; 1105, impeller; 1106, air inlet hood; 1107, first bevel gear; 1108, first clockwork spring; 1109, second bevel gear; 1110, ratchet; 1111, chute; 1112, rack; 1113, driven gear; 1114, mounting rod; 1115, door panel; 1116, second clockwork spring; 1117, telescopic groove; 1118, trapezoidal insert block; 1119, extrusion spring. Detailed implementation manners

[0044] To make the technical solution of the present invention clearer and more definite to those skilled in the art, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. However, the implementation manners of the present invention are not limited thereto.

[0045] As Figures 1 - 8 shown, this embodiment provides an intelligent dimming LED street lamp, which includes a lamp cover 1 and heat sinks 101 uniformly fixed on the top of the lamp cover 1;

[0046] The bottom of the lamp cover 1 is uniformly installed with an LED lamp board 2, and a control switch 3 is installed on the inner top of the lamp cover 1;

[0047] The control switch 3 adopts a normally closed mechanical temperature control switch with a bimetallic contact inside. When the temperature exceeds 80 °C (10 °C higher than the brightness adjustment threshold), the contact disconnects, cutting off the power supply of the LED lamp board 2 to achieve overheat protection; when the temperature drops to 60 °C, the contact resets and closes.

[0048] A variable resistor 4 is installed at the inner end of the lamp cover 1. The LED lamp board 2, the control switch 3 and the variable resistor 4 are connected in series through wires, and a 10A fuse is connected in series in the circuit to prevent excessive current caused by poor contact of the variable resistor slider or short circuit of the line. The rated voltage of the fuse is 250V, and the fusing time < 0.1s;

[0049] A sliding mechanism 5 for adjusting the resistance of the variable resistor 4 is provided at the front end of the lamp cover 1. The sliding mechanism 5 controls the sliding of the slider on the variable resistor 4 through the change of the internal temperature of the lamp cover 1;

[0050] Brackets 6 are provided on both sides of the top of the lamp cover 1, and protective shutters 7 are rotatably installed on the brackets 6. The two groups of protective shutters 7 are symmetrical to each other, and a rotating mechanism 8 for controlling the relative swing of the protective shutters 7 is provided at the front end of the top of the lamp cover 1;

[0051] An inner sleeve 9 is fixed at the tail end of the lamp cover 1, an outer sleeve 10 is horizontally slidably arranged at the end of the inner sleeve 9, and a telescopic mechanism 11 is provided at one end of the lamp cover 1 close to the inner sleeve 9. The telescopic mechanism 11 controls the sliding of the inner sleeve 9 inside the outer sleeve 10.

[0052] Overall working principle: During installation, the end of the outer sleeve 10 is fixed to the lamp post. The LED lamp board 2 is powered on and generates heat. Part of the heat diffuses outward through the heat sink 101. The heat that is not dissipated in time causes the temperature inside the lamp cover 1 to rise. When the temperature inside the lamp cover 1 rises and exceeds the threshold of 70°C, the sliding mechanism 5 controls the slider on the variable resistor 4 to slide, increasing the resistance on the variable resistor 4 and reducing the usage brightness of the LED lamp board 2. After the temperature inside the lamp cover 1 drops, the sliding mechanism 5 controls the slider on the variable resistor 4 to reset, reducing the resistance on the variable resistor 4 and increasing the usage brightness of the LED lamp board 2. When the brightness of the LED lamp board 2 decreases, the rotating mechanism 8 controls the two groups of protective shutters 7 to rotate in the opposite direction. After the two groups of protective shutters 7 rotate, they form a V shape, guiding the horizontally flowing air towards the heat sink 101 to accelerate the cooling rate. In strong wind weather, when the wind speed is greater than level 6, the telescopic mechanism 11 is driven by the wind force to control the inner sleeve 9 to slide into the inner part of the outer sleeve 10, shortening the lamp arm to reduce wind resistance and decreasing the lighting radius. When the wind is weak, the telescopic mechanism 11 controls the inner sleeve 9 to reset, extending the lamp arm and increasing the lighting radius;

[0053] It is determined through thermal simulation experiments that when the power of the LED lamp board 2 is 100W, after the temperature inside the lamp cover 1 exceeds 70°C, the decline in the LED light efficiency exceeds 15%, and the life attenuation accelerates (for every 10°C exceeding the threshold, the life is shortened by 50%). Therefore, 70°C is set as the brightness adjustment trigger point to balance the lighting effect and the device life;

[0054] According to the "Load Code for Building Structures", a level 6 wind corresponds to a basic wind pressure of approximately 0.25 kN / m². At this time, the wind moment on the lamp arm exceeds 50 N·m, which may cause structural fatigue damage. The wind moment below level 4 is less than 20 N·m and has no significant impact on structural safety. Through wind tunnel experiments, it is verified that after the inner sleeve 9 shrinks, the wind resistance coefficient of the lamp arm is reduced by 40% - 50%, effectively reducing the structural load.

[0055] In this embodiment, the sliding mechanism 5 includes a control chamber 501, a helical bimetal 502, and a sliding rod 503. The control chamber 501 is opened inside the lamp cover 1. The bottom end of the control chamber 501 is fixed with a helical bimetal 502. The top end of the helical bimetal 502 is vertically fixed with a sliding rod 503. The slider on the variable resistor 4 is rotatably connected to the sliding rod 503 through a bearing. The helical bimetal 502 is made of copper-nickel alloy / iron-nickel alloy, with a thickness of 0.3 - 0.5 mm, an outer helical diameter of 20 - 30 mm, and an inner diameter of 5 - 8 mm, and is fixed to the sliding rod 503 by top welding.

[0056] Local working principle: When the temperature inside the lamp cover 1 rises and exceeds the threshold value of 70°C, the spiral bimetal 502 will deform, and the top or the apex will extend upward, thereby driving the slider on the variable resistor 4 to move upward, increasing the resistance and reducing the brightness of the LED lamp board 2. When the temperature drops, the spiral bimetal 502 resets, reducing the resistance and increasing the brightness of the LED lamp board 2. When the temperature reaches 70°C ± 5°C, the axial elongation of the spiral bimetal 502 is 3 - 5 mm, driving the slide rod 503 to move upward, causing the slider of the variable resistor 4 to slide, and the resistance value increases by 10 - 15 Ω. When the temperature drops to 50°C ± 5°C, the bimetal resets, and the resistance value returns to the initial state.

[0057] In this embodiment, the rotating mechanism 8 includes a vertical rod 801, a slot 802, a worm 803, a worm gear 804, a rotating rod 805, and a shield 806. The top end of the control chamber 501 is vertically rotatably installed with a vertical rod 801. The inner bottom end of the vertical rod 801 is provided with a slot 802. The slide rod 503 is vertically slidably arranged inside the slot 802. The top end of the vertical rod 801 is fixed with a worm 803. The rotating rods 805 are rotatably installed on the brackets 6. One end of the rotating rod 805 is fixedly connected to the protective shutter 7. The other end of the rotating rod 805 is fixed with a worm gear 804 meshing with the worm 803. A shield 806 is provided on the top of the lamp cover 1 and outside the worm gear 804.

[0058] Local working principle: The cooperation between the slide rod 503 and the slot 802 is a sliding fit with a rectangular cross-section. When the spiral bimetal 502 deforms and elongates, it will rotate simultaneously. The spiral bimetal 502 drives the rotation of the slide rod 503, thereby controlling the rotation of the vertical rod 801. The vertical rod 801 will control the rotation of the worm 803. The worm 803 will control the two worm gears 804 to rotate in opposite directions, thereby controlling the protective shutter 7 to swing upward by 45° - 60° with the rotating rod 805 as the axis, forming a V-shaped air guiding structure on the top of the lamp cover 1 to guide the wind towards the direction of the heat sink 101.

[0059] In this embodiment, the protective shutter 7 includes an upper shutter 701, a lower shutter 702, a groove 703, and a return spring 704. The end of the upper shutter 701 is fixedly connected to the rotating rod 805. The bottom end of the upper shutter 701 is hingedly installed with a lower shutter 702. Grooves 703 are provided on the opposite sides of the upper shutter 701 and the lower shutter 702. A return spring 704 is fixed between the ends of the two grooves 703.

[0060] Local working principle: In the normal use state of the protective shutter 7, the elastic coefficient of the return spring 704 is 5-10 N / m. In the initial state, it is in a stretched state, so that the upper shutter 701 and the lower shutter 702 are kept horizontally fitted. When there is snow accumulation on the tops of the upper shutter 701 and the lower shutter 702 in rainy or snowy weather and the weight of the snow accumulation exceeds 5 kg / m², the lower shutter 702 will be squeezed downward, and the lower shutter 702 will swing downward by 20°-30° around the hinge axis, and the snow accumulation will slide off. Then it will reset under the action of the spring. When the protective shutter 7 is rotationally controlled by the rotating mechanism 8, the upper shutter 701 and the lower shutter 702 will rotate upward.

[0061] In this embodiment, a rubber sealing plate 705 is provided along the length direction of the side edge of the upper shutter 701, and the rubber sealing plates 705 on the outer sides of the two groups of upper shutters 701 are fitted to each other.

[0062] Local working principle: The rubber sealing plate 705 is made of chloroprene rubber and has a trapezoidal cross-section (upper base width 8 mm, lower base width 12 mm, height 5 mm). When installed, it is fixed to the side edge of the upper shutter 701 through an adhesive. The two groups of sealing plates are tightly fitted through a wedge groove tenon structure, and the waterproof grade reaches IP65. The use of the rubber sealing plate 705 can increase the sealing performance between the two groups of protective shutters 7 and improve the protection effect at the top.

[0063] In this embodiment, the telescopic mechanism 11 includes an adjustment chamber 1101, a screw 1102, a threaded hole 1103 and a driving component. The adjustment chamber 1101 is opened at the tail end inside the lamp housing 1. The screw 1102 is rotatably installed at the tail end of the lamp housing 1 through a bearing. One end of the screw 1102 is located inside the adjustment chamber 1101, and the other end of the screw 1102 passes through the inside of the inner sleeve 9. A threaded hole 1103 matching the screw 1102 is opened inside the outer sleeve 10, and a driving component for controlling the rotation of the screw 1102 is provided inside the adjustment chamber 1101.

[0064] Local working principle: When used in strong wind weather, the driving component controls the rotation of the screw 1102, and the screw 1102 moves toward the inside of the threaded hole 1103, while the inner sleeve 9 linearly slides toward the inside of the outer sleeve 10 to reduce the length of the lamp arm. After the wind speed decreases, the driving component controls the screw 1102 to rotate in the reverse direction to reset the inner sleeve 9.

[0065] In this embodiment, the drive assembly includes a shaft rod 1104, an impeller 1105, an air inlet hood 1106, a first bevel gear 1107, a first clockwork spring 1108, a second bevel gear 1109 and a positioning and releasing member. The shaft rod 1104 is vertically and rotatably installed at the bottom end of the adjustment chamber 1101. The top end of the shaft rod 1104 extends to the top of the lamp housing 1. An impeller 1105 is installed at the top end of the shaft rod 1104. An air inlet hood 1106 is arranged outside the impeller 1105. Air ports are evenly formed in the outer side of the air inlet hood 1106. A first bevel gear 1107 is fixed to the inner top of the adjustment chamber 1101 where the shaft rod 1104 is located. A first clockwork spring 1108 is fixed between the bottom end of the shaft rod 1104 and the inner wall of the adjustment chamber 1101. A second bevel gear 1109 meshing with the first bevel gear 1107 is installed at the end of the screw rod 1102. A positioning and releasing member for controlling the one-way rotation and reset of the shaft rod 1104 is arranged inside the adjustment chamber 1101.

[0066] Local working principle: When the wind is strong and the wind speed exceeds level six (10.8 - 13.8 m / s), the air flow enters the interior of the air inlet hood 1106 to control the rotation of the impeller 1105. The rotation of the impeller 1105 will control the rotation of the screw rod 1102 through the mutual transmission between the gears. The inner sleeve 9 contracts into the outer sleeve 10 at a speed of 10 - 15 mm / s until it is shortened to the shortest length. At the same time, the first clockwork spring 1108 will be compressed. After the length of the lamp arm is reduced, the position of the shaft rod 1104 is limited by the positioning and releasing member. Due to the certain fluctuation of the wind speed, when the wind speed decreases slightly, the shaft rod 1104 will be limited due to the existence of the positioning and releasing member. When the wind speed drops to level four, the positioning and releasing member will release the positioning state of the shaft rod 1104, and the shaft rod 1104 will reset under the elastic force of the first clockwork spring 1108, driving the reverse rotation of the screw rod 1102.

[0067] In this embodiment, the positioning and releasing member includes a ratchet wheel 1110, a chute 1111, a rack 1112, a driven gear 1113, a mounting rod 1114, a door plate 1115, a second hairspring 1116, a telescopic groove 1117, a trapezoidal insert block 1118 and a compression spring 1119. The ratchet wheel 1110 is horizontally fixed on the shaft rod 1104. The side of the adjustment chamber 1101 is evenly provided with chutes 1111 in an annular array. Racks 1112 are slidably arranged inside the chutes 1111. Driven gears 1113 are meshingly installed on the sides of the racks 1112. Mounting rods 1114 are fixed to the tops of the driven gears 1113. The mounting rods 1114 extend to the air ports inside the air inlet hood 1106. The mounting rods 1114 are rotatably connected to the air inlet hood 1106. A door plate 1115 for blocking the air ports is fixed to the top of the mounting rod 1114. A second hairspring 1116 is provided between the mounting rod 1114 and the side of the chute 1111. Telescopic grooves 1117 are opened at one ends of the racks 1112 close to the ratchet wheel 1110. Trapezoidal insert blocks 1118 are slidably arranged inside the telescopic grooves 1117. Compression springs 1119 are provided between the trapezoidal insert blocks 1118 and the inner ends of the telescopic grooves 1117.

[0068] Local working principle: In the case of low wind speed, the door plate 1115 blocks the air ports of the air inlet hood 1106, and the trapezoidal insert block 1118 does not contact the side of the ratchet wheel 1110. When the wind speed is greater than level four, the door plate 1115 will be pushed open by the wind force, and the gas enters the inside of the air inlet hood 1106. The door plate 1115 drives the mounting rod 1114 to rotate, the mounting rod 1114 drives the driven gear 1113 to rotate, and the rotation of the driven gear 1113 will push the rack 1112 outwards, inserting the trapezoidal insert block 1118 into the tooth grooves on the outside of the ratchet wheel 1110. The tooth profile of the ratchet wheel 1110 is an involute tooth profile, the module is 2, the number of teeth is 24, the inclined surface angle of the trapezoidal insert block 1118 is 45°, the insertion depth when it fits with the tooth surface of the ratchet wheel 1110 is 3 - 5 mm, and the elastic coefficient of the compression spring 1119 is 20 - 30 N / m, ensuring that the insert block can be reliably inserted into the tooth grooves of the ratchet wheel 1110 when the wind speed ≥ level six, preventing the shaft rod 1104 from reversing, and ensuring that after the wind speed is greater than level six, the shaft rod 1104 can only drive the ratchet wheel 1110 to rotate unidirectionally. After the length of the lamp arm is reduced, due to the certain fluctuation of the wind force, before the wind force is greater than level four, the door plate 1115 will not reset, the shaft rod 1104 is in a limited state, and the length of the lamp arm is fixed. When the wind speed is less than level four, the door plate 1115 will reset under the action of the second hairspring 1116, pulling out the trapezoidal insert block 1118 from the tooth grooves on the outside of the ratchet wheel 1110, releasing the locking state of the shaft rod 1104, and the shaft rod 1104 can reset.

[0069] In this embodiment, the ends of the trapezoidal inserts 1118 close to the ratchet 1110 are coated with wear-resistant coatings. The trapezoidal inserts 1118 are distributed in an annular array. There are four groups of trapezoidal inserts 1118, and the included angle between adjacent trapezoidal inserts 1118 is 90°.

[0070] Local working principle: Through the setting of multiple groups of trapezoidal inserts 1118, the limiting stability of the ratchet 1110 can be ensured.

[0071] As Figures 1 - 8 shown, this embodiment provides an intelligent dimming LED street lamp luminous flux and color rendering index collaborative optimization method, and the process is as follows:

[0072] Step 1: During installation, the end of the outer sleeve 10 is fixed on the lamp post. The LED lamp board 2 is powered on and generates heat. Part of the heat diffuses outward through the heat sink 101, and the heat that is not dissipated in time causes the temperature inside the lamp cover 1 to rise.

[0073] Step 2: When the temperature inside the lamp cover 1 rises and exceeds the threshold of 70 °C, the sliding mechanism 5 controls the slider on the variable resistor 4 to slide, increasing the resistance on the variable resistor 4 and reducing the usage brightness of the LED lamp board 2. After the temperature inside the lamp cover 1 drops, the sliding mechanism 5 controls the slider on the variable resistor 4 to reset, reducing the resistance on the variable resistor 4 and increasing the usage brightness of the LED lamp board 2.

[0074] Step 3: When the brightness of the LED lamp board 2 decreases, the rotating mechanism 8 controls the two groups of protective shutters 7 to rotate in the opposite direction. After the two groups of protective shutters 7 rotate, they form a V shape, guiding the horizontally flowing air flow towards the direction of the heat sink 101 to accelerate the cooling rate.

[0075] Step 4: In strong wind weather, the telescopic mechanism 11 is driven by the wind force to control the inner sleeve 9 to slide into the inner part of the outer sleeve 10, shortening the lamp arm to reduce wind resistance and decreasing the lighting radius. When the wind is small, the telescopic mechanism 11 controls the inner sleeve 9 to reset, extending the lamp arm and increasing the lighting radius.

[0076] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, all belong to the protection scope of the present invention.

Claims

1. An intelligent dimming LED street lamp, comprising a lamp cover (1) and heat sinks (101) uniformly fixed on the top of the lamp cover (1); It is characterized in that: LED lamp boards (2) are uniformly installed at the bottom of the lamp cover (1), a control switch (3) is installed at the inner top of the lamp cover (1), a variable resistor (4) is installed at the inner end of the lamp cover (1), the LED lamp boards (2), the control switch (3) and the variable resistor (4) are connected in series through wires, a sliding mechanism (5) for adjusting the resistance of the variable resistor (4) is provided at the front end of the lamp cover (1), and the sliding mechanism (5) controls the sliding of the slider on the variable resistor (4) through the change of the internal temperature of the lamp cover (1); Brackets (6) are provided on both sides of the top of the lamp cover (1), and protective shutter plates (7) are rotatably installed on the brackets (6). The two groups of protective shutter plates (7) are symmetrical to each other, and a rotating mechanism (8) for controlling the relative swing of the protective shutter plates (7) is provided at the front end of the top of the lamp cover (1); An inner sleeve (9) is fixed to the tail end of the lamp cover (1), an outer sleeve (10) is horizontally slidably arranged at the end of the inner sleeve (9), and a telescopic mechanism (11) is provided at one end of the lamp cover (1) close to the inner sleeve (9). The telescopic mechanism (11) controls the sliding of the inner sleeve (9) inside the outer sleeve (10).

2. The intelligent dimming LED street lamp according to claim 1, wherein: The sliding mechanism (5) includes a control chamber (501), a spiral bimetal sheet (502) and a sliding rod (503). The control chamber (501) is opened inside the lamp cover (1), the spiral bimetal sheet (502) is fixed to the bottom end of the control chamber (501), the sliding rod (503) is vertically fixed to the top end of the spiral bimetal sheet (502), and the slider on the variable resistor (4) is rotatably connected to the sliding rod (503) through a bearing.

3. The intelligent dimming LED street lamp according to claim 2, wherein: The rotating mechanism (8) includes a vertical rod (801), a slot (802), a worm (803), a worm gear (804), a rotating rod (805) and a protective cover (806). The vertical rod (801) is vertically rotatably installed at the top end of the control chamber (501), a slot (802) is opened at the inner bottom end of the vertical rod (801), the sliding rod (503) is vertically slidably arranged inside the slot (802), the worm (803) is fixed to the top end of the vertical rod (801), the rotating rods (805) are rotatably installed on the brackets (6), one end of the rotating rod (805) is fixedly connected to the protective shutter plate (7), the other end of the rotating rod (805) is fixed with a worm gear (804) meshing with the worm (803), and a protective cover (806) is provided on the top of the lamp cover (1) and outside the worm gear (804).

4. The intelligent dimming LED street lamp according to claim 3, wherein: The protective shutter plate (7) includes an upper shutter plate (701), a lower shutter plate (702), a groove (703) and a return spring (704). The end of the upper shutter plate (701) is fixedly connected to the rotating rod (805), the lower shutter plate (702) is hingedly installed at the bottom end of the upper shutter plate (701), grooves (703) are opened on the opposite side edges of the upper shutter plate (701) and the lower shutter plate (702), and a return spring (704) is fixed between the ends of the two groups of grooves (703).

5. The intelligent dimming LED street lamp according to claim 4, wherein: A rubber sealing plate (705) is provided along the length direction of the side edge of the upper shutter (701), and the rubber sealing plates (705) on the outer sides of the two groups of upper shutters (701) are in mutual contact.

6. The intelligent dimming LED street lamp according to claim 1, wherein: The telescopic mechanism (11) includes an adjustment chamber (1101), a screw rod (1102), a threaded hole (1103) and a drive assembly. The adjustment chamber (1101) is opened at the tail end inside the lamp housing (1). The screw rod (1102) is rotatably installed at the tail end of the lamp housing (1) through a bearing. One end of the screw rod (1102) is located inside the adjustment chamber (1101), and the other end of the screw rod (1102) passes through the inside of the inner sleeve (9). A threaded hole (1103) matching the screw rod (1102) is opened inside the outer sleeve (10). A drive assembly for controlling the rotation of the screw rod (1102) is provided inside the adjustment chamber (1101).

7. An intelligent dimming LED street lamp according to claim 1, characterized in that: The drive assembly includes a shaft rod (1104), an impeller (1105), an air inlet cover (1106), a first bevel gear (1107), a first clockwork spring (1108), a second bevel gear (1109) and a positioning release member. The shaft rod (1104) is vertically and rotatably installed at the bottom end of the adjustment chamber (1101), and the top end of the shaft rod (1104) extends to the top of the lamp housing (1). The top end of the shaft rod (1104) is provided with an impeller (1105). An air inlet cover (1106) is provided outside the impeller (1105). Air ports are evenly opened on the outer side of the air inlet cover (1106). A first bevel gear (1107) is fixed at the inner top of the adjustment chamber (1101) where the shaft rod (1104) is located. A first clockwork spring (1108) is fixed between the bottom end of the shaft rod (1104) and the inner wall of the adjustment chamber (1101). A second bevel gear (1109) meshing with the first bevel gear (1107) is installed at the end of the screw rod (1102). A positioning release member for controlling the one-way rotation and reset of the shaft rod (1104) is provided inside the adjustment chamber (1101).

8. An intelligent dimming LED street lamp according to claim 7, characterized in that: The positioning and releasing member includes a ratchet wheel (1110), a chute (1111), a rack (1112), a driven gear (1113), a mounting rod (1114), a door panel (1115), a second clockwork spring (1116), a telescopic groove (1117), a trapezoidal insert block (1118) and a compression spring (1119). The ratchet wheel (1110) is horizontally fixed on the shaft rod (1104). The side of the adjustment chamber (1101) is evenly provided with chutes (1111) in an annular array. Racks (1112) are slidably arranged inside the chutes (1111). Driven gears (1113) are meshingly installed on the sides of the racks (1112). Mounting rods (1114) are fixed to the tops of the driven gears (1113). The mounting rods (1114) extend to the air ports inside the air inlet hood (1106). The mounting rods (1114) are rotatably connected to the air inlet hood (1106). A door panel (1115) for blocking the air ports is fixed to the top of the mounting rod (1114). A second clockwork spring (1116) is provided between the mounting rod (1114) and the side of the chute (1111). Telescopic grooves (1117) are formed at one ends of the racks (1112) close to the ratchet wheel (1110). Trapezoidal insert blocks (1118) are slidably arranged inside the telescopic grooves (1117). Compression springs (1119) are provided between the trapezoidal insert blocks (1118) and the inner ends of the telescopic grooves (1117).

9. The intelligent dimming LED street lamp according to claim 8, wherein: Wear-resistant coatings are applied to one ends of the trapezoidal insert blocks (1118) close to the ratchet wheel (1110). The trapezoidal insert blocks (1118) are distributed in an annular array. There are four groups of trapezoidal insert blocks (1118), and the included angle between adjacent trapezoidal insert blocks (1118) is 90°.

10. A method for collaborative optimization of luminous flux and color rendering index of an intelligent dimming LED street lamp, based on an intelligent dimming LED street lamp according to any one of claims 1-9, characterized in that, It includes the following steps: Step 1: During installation, fix the end of the outer sleeve (10) on the lamp post. The LED lamp board (2) is powered on and generates heat. Part of the heat diffuses outward through the heat sink (101). The heat that is not dissipated in time causes the temperature inside the lamp cover (1) to rise; Step 2: When the temperature inside the lamp cover (1) rises and exceeds the threshold of 70 °C, the sliding mechanism (5) controls the slider on the variable resistor (4) to slide, increasing the resistance on the variable resistor (4) and reducing the usage brightness of the LED lamp board (2). After the temperature inside the lamp cover (1) drops, the sliding mechanism (5) controls the slider on the variable resistor (4) to reset, reducing the resistance on the variable resistor (4) and increasing the usage brightness of the LED lamp board (2); Step 3: When the brightness of the LED lamp board (2) decreases, the rotating mechanism (8) controls the two protective shutter plates (7) to rotate in the reverse direction. After the two protective shutter plates (7) rotate, they form a V shape to guide the horizontally flowing air towards the direction of the heat sink (101), accelerating the cooling rate; Step 4: In strong wind weather, use the wind force to drive the telescopic mechanism (11) to control the inner sleeve (9) to slide into the inner part of the outer sleeve (10), shortening the lamp arm to reduce wind resistance and decreasing the lighting radius. When the wind is small, the telescopic mechanism (11) controls the inner sleeve (9) to reset, extending the lamp arm and increasing the lighting radius.

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