LED street lamp with low light attenuation rate

Abstract

The invention discloses an LED street lamp with a low light attenuation rate, and relates to the technical field of LED street lamps. Comprising a lamp post, a solar panel, a lamp shell, a light decay protection device, an LED chip and an adjusting device, impurities in cooling liquid which is recycled for a long time are filtered through a filter plate, the impurities are prevented from entering a cooling pipe and being attached to the wall of the cooling pipe to affect LED heat dissipation, and the LED street lamp cannot generate light decay due to overheating; the first detector is matched with the second detector to detect the flow speed of cooling liquid on the two sides of the filter plate, so that attachments on the filter plate are detected, and when the attachments on the filter screen are higher than an index value, the automatic cleaning device is started to clean the filter screen. When the cooling liquid passes through the guide vanes, the resistance is reduced, the cooling liquid rotates, and when the cooling liquid rotates and passes through the cooling pipe, heat at the bottom end of the cooling pipe can be absorbed more uniformly, so that the situation that only the cooling liquid close to the bottom of the cooling pipe absorbs heat sufficiently, and the cooling liquid at the upper part absorbs heat incompletely and non-uniformly is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of LED street lamps, in particular to an LED street lamp with low light decay rate. Background Art

[0002] The light decay rate of LED street lamps refers to the rate at which the luminous intensity of LED street lamps gradually decreases over time during use. Light decay is an important indicator of the performance degradation of LED lamps. It not only affects the lighting effect, but is also directly related to the service life of LED street lamps. There are many factors that affect light decay, including the quality of the light-emitting chip, packaging process, heat dissipation, current drive, etc. Among them, street lamp heat dissipation is the factor that most affects light decay during the use of street lamps. If the heat is not dissipated in a timely and effective manner, the temperature of the light-emitting chip will increase, thereby accelerating the process of light decay. Therefore, good thermal management is the key to reducing the light decay rate.

[0003] However, although there are many heat dissipation methods currently used in street lamps, they are all overall heat dissipation methods, which not only wastes energy, but also cannot achieve high-precision heat dissipation for areas with different temperatures. Moreover, when liquid cooling is used to dissipate heat from LED chips, long-term use of the coolant will cause pipe blockage, making it impossible for the LED street lamp to dissipate heat normally, resulting in light decay. Summary of the invention

[0004] The object of the present invention is to provide an LED street lamp with low light decay rate to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low light decay rate LED street lamp, comprising a lamp post, a solar panel installed on the lamp post, a lamp shell installed on the lamp post, an LED chip installed in the lamp shell, a light decay protection device installed in the lamp shell, an adjustment device installed on the top of the LED chip, the adjustment device is connected to the light decay protection device, and the adjustment device is located between the light decay protection device and the LED chip; the light decay protection device comprises a liquid outlet box, a liquid inlet box and a plurality of cooling pipes, one end of the cooling pipe is connected to the inside of the liquid outlet box, the other end of the cooling pipe is connected to the inside of the liquid inlet box through the adjustment device, an infusion device is connected to the outside of the liquid inlet box, the liquid outlet box is connected to the infusion device through a pipeline, rotating seams are symmetrically provided at the top of the liquid inlet box, a sliding seam is provided at the bottom of the liquid inlet box, and sealing strips are provided in the rotating seam and the sliding seam.

[0006] A control system is installed in the lamp housing, which is used to control the entire LED street light; the infusion device is used to transport low-temperature coolant to the liquid inlet tank; the liquid outlet tank is used to circulate the internal high-temperature coolant to the infusion device through a pipeline, and the infusion device can cool the high-temperature coolant for recycling; the solar panel is used to convert solar energy into electrical energy to provide electrical energy for the LED street light; and the LED chip is used for lighting.

[0007] The light decay protection device also includes a plurality of first detectors and a plurality of second detectors, a first rotating rod and a second rotating rod are respectively installed in the rotating slit, the first detector is slidably installed at the top of the liquid inlet box, a first flow velocity probe is rotatably installed on the first detector, and the first flow velocity probe is rotatably connected to the first rotating rod, the second detector is slidably installed at the top of the liquid inlet box, a second flow velocity probe is rotatably installed on the second detector, and the second flow velocity probe is rotatably connected to the second rotating rod, a filter plate is installed in the liquid inlet box, an automatic cleaning device is installed in the liquid inlet box, and the automatic cleaning device is attached to the surface of the filter plate. The filter plate is used to filter impurities in the coolant that is circulated for a long time.

[0008] The control system turns on the infusion device, which inputs the coolant into the liquid inlet tank. The coolant flows through the first flow velocity probe, passes through the filter plate and flows through the second flow velocity probe. Under the impact of the coolant, the first flow velocity probe rotates around the first rotating rod, and the top of the first flow velocity probe swings, and drives the first sliding seat to slide on the top of the liquid inlet tank. The first sliding seat drives the iron core to slide. Similarly, the second sliding seat drives the induction coil to slide. Since the flow velocity of the coolant is lost when passing through the filter plate, the impact force on the second flow velocity probe is reduced. Therefore, the swing angle of the second flow velocity probe is smaller than the swing angle of the first flow velocity probe, and the corresponding induction coil The sliding distance is smaller than the sliding distance of the iron core. At this time, the distance between the two is relatively reduced. The iron core passes through the sliding hole on the second sliding seat and slides inside the induction coil, thereby generating an induced electromotive force. The induced electromotive force is transmitted to the control system through the wire. The control system monitors the change in the size of the induced electromotive force. When used for a long time, the filter plate is blocked, the flow rate of the coolant lost after passing through the filter plate increases, the swing angle of the second flow rate probe decreases, the distance between the iron core and the induction coil is closer than normal, and the generated induced electromotive force increases. The control system monitors the induced electromotive force and starts the automatic cleaning device when it is higher than the preset value.

[0009] The first detector includes a first sliding seat, which is slidably connected to the top of the liquid inlet box, an iron core is installed on the first sliding seat, and a first flow velocity probe is movably installed on one side of the first sliding seat; the second detector includes a second sliding seat, which is slidably installed on the top of the liquid inlet box, a coil cylinder is installed on the second sliding seat, an induction coil is wound on the coil cylinder, a second flow velocity probe is movably installed on one side of the second sliding seat, and a sliding hole corresponding to the size of the iron core is provided on the other side of the second sliding seat. The first sliding seat and the second sliding seat are both provided with strip grooves, and the first flow velocity probe and the second flow velocity probe slide and rotate on the strip grooves on the first sliding seat and the second sliding seat respectively.

[0010] The automatic cleaning device includes a cleaning box, a screw rod and a rack. The cleaning box is slidably installed in the liquid inlet box, a shovel is installed on the cleaning box, a cleaning shaft is rotatably installed in the cleaning box, a cleaning roller is installed on the cleaning shaft, one side of the cleaning shaft passes through the bottom end of the cleaning box and is installed with a transmission gear, the rack is installed at the bottom end of the liquid inlet box, the transmission gear meshes with the rack for transmission, a sliding block is installed at the bottom end of the cleaning box, the screw rod is rotatably installed at the bottom end of the cleaning box through a connecting piece, a thread is provided on the screw rod, an output motor is installed at one end of the screw rod, the sliding block passes through the sliding gap and is threadedly connected to the screw rod, an arc-shaped electric valve is installed in the cleaning box, and an air pump is connected to the outside of the cleaning box.

[0011] The control system turns on the drive motor, and the output shaft of the drive motor drives the lead screw to rotate. The lead screw drives the automatic cleaning device to slide along the sliding gap through the sliding block. When the automatic cleaning device slides, it drives the cleaning shaft to slide, and the cleaning shaft drives the transmission gear to move. The transmission gear rotates under the action of the rack, and the cleaning shaft drives the cleaning roller to rotate. The control system turns on the arc electric valve and the air pump, and the air pump extracts the gas in the cleaning box to generate negative pressure in the cleaning box, thereby generating suction in the cleaning box. When the automatic cleaning device slides over the filter plate, the cleaning roller cleans the surface of the filter plate, and the shovel plate removes the attachments on the surface of the filter plate. The cleaned attachments are sucked into the cleaning box, thereby realizing automatic cleaning of the filter plate, avoiding long-term blockage of the filter plate, and preventing the LED chip from overheating and causing light decay.

[0012] The adjusting device includes a plurality of pipeline supports, support bars, connecting rings and fixed rings. The pipeline support is located at the bottom end of the cooling tube, and the pipeline support is installed on the LED chip. The bottom end of the support bar is connected to the top of the LED chip, and a gas rod is installed on the top of the support bar. The gas rods are internally connected, and the gas rods are connected to the pipeline support through a conversion device. One end of the conversion device is connected to the inside of the pipeline support, and the other end of the conversion device is connected to the inside of the gas rod. The fixed ring is installed at one end of the cooling tube, and a gear ring is rotatably installed on the fixing ring. The connecting ring is rotatably connected to the gear ring, and the connecting ring is installed on the liquid inlet box. A guide assembly is installed on the fixing ring, and the guide assembly is meshed with the gear ring for transmission. An output pipe is installed on one side of the gas rod, and the output pipe is connected to the inside of the gas rod. A slider is installed at one end of the output pipe, and the slider is connected to the inside of the output pipe, and the slider is connected to the gear ring.

[0013] A plurality of pipe supports are provided at the bottom end of each cooling tube, and gaps are provided between the sliding supports. The plurality of pipe supports hold up the corresponding cooling tubes above. A first filling medium with a high thermal expansion coefficient is provided in the pipe supports. The pipe supports can transfer the heat emitted by the LED chip to the cooling tube; a second filling medium is provided in the gas rod.

[0014] When the heat generation of different parts of the LED chip is inconsistent due to long-term use, the heat generated by the LED chip heats the first filling medium in the pipe support. The first filling medium expands due to the heat and pushes the curved sliding rod to slide. The curved sliding rod drives the piston head to slide in the connecting shell, so that the second filling medium in the gas rod is compressed. The second filling medium pushes the connecting sliding rod to slide. The connecting sliding rod drives the gear ring to rotate through the connecting block. The gear ring drives the guide rotating rod to rotate through the guide gear. The guide rotating rod drives the guide blade to rotate. The guide blade rotates and changes its angle. A number of cooling tubes divide the surface of the LED chip into a number of heat dissipation areas. Each cooling tube has a certain cooling effect on the heat dissipation area. The higher the total heat generated by the LED chips in the corresponding area, the greater the total elongation of the bent sliding rod in the area, thereby increasing the compression of the second filling medium in the gas rod, and further increasing the extension of the connecting sliding rod, and ultimately making the rotation angle of the guide vane at the corresponding position larger. Compared with the normal state, the resistance encountered by the coolant when passing through the guide vane is reduced. Due to the spiral structure formed between the guide vanes, the flowing coolant rotates. When the coolant rotates through the cooling tube, it can absorb the heat at the bottom of the cooling tube more evenly, avoiding that only the coolant near the bottom of the cooling tube fully absorbs heat, while the coolant at the upper part absorbs heat incompletely and unevenly.

[0015] Since the cooling areas at the corresponding positions of different cooling tubes have different heat generation, the corresponding guide vanes have different rotation angles. In the area with high heat generation, the guide vanes have a large rotation angle, the resistance to the passage of coolant is small, and the generated rotation speed is higher. The water pressure at the guide component position is relatively small. In the area with low heat generation, the corresponding guide vanes have a small rotation angle, the resistance to the passage of coolant is large, the generated rotation speed is low, and the water pressure at the guide component position is relatively large. Due to the water pressure difference at different guide component positions, the coolant flows more to the area with lower water pressure, thereby achieving the effect of automatic distribution of coolant flow.

[0016] The conversion device includes a sliding shell and a connecting shell. The connecting shell is connected to the gas rod. One side of the sliding shell is connected to the pipeline support. A curved sliding rod is slidably installed in the sliding shell. A piston head is installed at one end of the curved sliding rod. The piston head is slidably connected to the inside of the connecting shell. The connecting shell is connected to the sliding shell.

[0017] The slider comprises an output shell, which is installed at one end of an output pipe. A connecting slide bar is slidably installed in the output pipe, and the connecting slide bar is connected to the gear ring.

[0018] A connecting rod is installed on the fixed ring, the connecting rod passes through the gear ring and is installed with a rotating drum, and a guide assembly is rotatably installed on the rotating drum; the gear ring is provided with gear teeth, the gear ring is provided with an arc groove, the connecting rod passes through the arc groove, a connecting block is installed on the gear ring, and the connecting block is connected to the connecting sliding rod; the guide assembly includes a guide rotating rod, the guide rotating rod is rotatably installed on the rotating drum, a guide blade is installed at one end of the guide rotating rod, and a guide gear is installed at the other end of the guide rotating rod, and the guide gear is meshed with the gear ring through the gear teeth for transmission.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Use the filter plate to filter impurities in the coolant that is used for a long time to prevent impurities from entering the cooling tube and adhering to the wall of the cooling tube, affecting the heat dissipation of the LED, so that the LED street lamp will not produce light decay due to overheating; use the first detector to cooperate with the second detector to detect the coolant flow rate on both sides of the filter plate, thereby realizing the detection of attachments on the filter plate, and when the attachments on the filter net are higher than the index value, start the automatic cleaning device to clean it.

[0021] 2. The sliding of the automatic cleaning device is used to remove the attachments on the surface of the filter plate, and the self-rotation of the cleaning roller is achieved through the rack and transmission gear to complete the cleaning of the surface of the filter plate, and the cleaned attachments are sucked into the cleaning box, thereby realizing automatic cleaning of the filter plate, avoiding long-term clogging of the filter plate, and preventing the LED chip from overheating and causing light decay.

[0022] 3. The first filling medium in the pipe support is used to convert the absorbed heat into the rotation of the gear ring, so that the guide vanes at the corresponding positions rotate. The resistance encountered by the coolant when passing through the guide vanes is reduced and rotation is generated. When the coolant rotates through the cooling pipe, it can absorb the heat at the bottom of the cooling pipe more evenly, avoiding the situation where only the coolant near the bottom of the cooling pipe absorbs heat fully, while the coolant at the top absorbs heat incompletely and unevenly.

[0023] 4. Use multiple sets of pipe supports and conversion devices to convert the heat in different heat dissipation areas into the rotation of the corresponding guide components, and achieve the purpose of automatic distribution of coolant flow through different water pressures at the positions of the guide components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall elevation view of the LED street lamp of the present invention;

[0025] Figure 2 It is an elevation view of the light decay protection device and the lamp housing of the present invention;

[0026] Figure 3 It is an elevation view of the light decay protection device of the present invention;

[0027] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A area;

[0028] Figure 5 It is an elevation view of the automatic cleaning device of the present invention;

[0029] Figure 6 is an elevation view of the regulating device of the present invention;

[0030] Figure 7 is an elevation view of the conversion device of the present invention;

[0031] Figure 8 For the present invention Figure 6 A partial enlarged view of the middle B area;

[0032] Fig. 9 It is an elevation view of the slider of the present invention.

[0033] In the figure: 1, lamp post; 2, solar panel; 3, lamp housing; 4, light decay protection device; 5, LED chip; 6, adjustment device; 41, liquid outlet box; 42, cooling pipe; 43, liquid inlet box; 44, first detector; 45, second detector; 46, rotating gap; 47, automatic cleaning device; 48, first rotating rod; 49, first flow velocity probe; 410, second flow velocity probe; 411, second rotating rod; 412, sliding gap; 441, first sliding seat; 442, iron core; 451, induction coil; 452, coil cylinder; 453, second sliding seat; 471, rack; 472, arc electric valve; 473, cleaning box; 474, shovel plate; 475, cleaning roller; 476, sliding block; 477, screw rod; 478, cleaning shaft; 479, transmission gear; 61, gas rod; 62, support bar; 63, conversion device; 64, pipe support; 65, slider; 66, output pipe; 67, guide assembly; 68, gear ring; 69, fixed ring; 631, curved sliding rod; 632, sliding shell; 633, connecting shell; 634, piston head; 651, connecting sliding rod; 652, output shell; 671, guide vane; 672, guide gear; 673, guide rotating rod; 681, arc groove; 682, gear teeth; 683, connecting block; 691, connecting rod; 692, rotating drum; 413, filter plate; 610, connecting ring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-9As shown, the present invention provides a technical solution for an LED street lamp with a low light decay rate: it includes a lamp post 1, a solar panel 2 is installed on the lamp post 1, a lamp shell 3 is installed on the lamp post 1, an LED chip 5 is installed in the lamp shell 3, a light decay protection device 4 is installed in the lamp shell 3, an adjustment device 6 is installed on the top of the LED chip 5, the adjustment device 6 is connected to the light decay protection device 4, and the adjustment device 6 is located between the light decay protection device 4 and the LED chip 5; the light decay protection device 4 includes a liquid outlet box 41, a liquid inlet box 43 and a plurality of cooling tubes 42, one end of the cooling tube 42 is connected to the inside of the liquid outlet box 41, and the other end of the cooling tube 42 is connected to the inside of the liquid inlet box 43 through the adjustment device 6, the liquid inlet box 43 is externally connected to an infusion device, the liquid outlet box 41 is connected to the infusion device through a pipeline, the top of the liquid inlet box 43 is symmetrically provided with rotating seams 46, the bottom of the liquid inlet box 43 is provided with a sliding seam 412, and sealing strips are provided in the rotating seam 46 and the sliding seam 412.

[0036] A control system is installed in the lamp housing 3, and the control system is used to control the entire LED street lamp; the infusion device is used to transport low-temperature coolant to the liquid inlet box 43; the liquid outlet box 41 is used to circulate the internal high-temperature coolant to the infusion device through a pipeline, and the infusion device can cool the high-temperature coolant and recycle it; the solar panel 2 is used to convert solar energy into electrical energy to provide electrical energy for the LED street lamp; the LED chip 5 is used for lighting.

[0037] The light decay protection device 4 further includes a plurality of first detectors 44 and a plurality of second detectors 45. A first rotating rod 48 and a second rotating rod 411 are respectively installed in the rotating slot 46. The first detector 44 is slidably installed at the top of the liquid inlet box 43. A first flow velocity probe 49 is rotatably installed on the first detector 44. The first flow velocity probe 49 is rotatably connected to the first rotating rod 48. The second detector 45 is slidably installed at the top of the liquid inlet box 43. A second flow velocity probe 410 is rotatably installed on the second detector 45. The second flow velocity probe 410 is rotatably connected to the second rotating rod 411. A filter plate 413 is installed in the liquid inlet box 43. An automatic cleaning device 47 is installed in the liquid inlet box 43. The automatic cleaning device 47 is attached to the surface of the filter plate 413. The filter plate 413 is used to filter impurities in the cooling liquid that is circulated for a long time.

[0038] The first detector 44 includes a first sliding seat 441, which is slidably connected to the top of the liquid inlet box 43, and an iron core 442 is installed on the first sliding seat 441. A first flow velocity probe 49 is movably installed on one side of the first sliding seat 441; the second detector 45 includes a second sliding seat 453, which is slidably installed on the top of the liquid inlet box 43, and a coil tube 452 is installed on the second sliding seat 453. An induction coil 451 is wound around the coil tube 452, a second flow velocity probe 410 is movably installed on one side of the second sliding seat 453, and a sliding hole corresponding to the size of the iron core 442 is provided on the other side of the second sliding seat 453.

[0039] The first sliding seat 441 and the second sliding seat 453 are both provided with strip grooves, and the first flow velocity measuring head 49 and the second flow velocity measuring head 410 slide and rotate on the strip grooves on the first sliding seat 441 and the second sliding seat 453 respectively.

[0040] The automatic cleaning device 47 includes a cleaning box 473, a screw rod 477 and a rack 471. The cleaning box 473 is slidably installed in the liquid inlet box 43. A shovel plate 474 is installed on the cleaning box 473. A cleaning shaft 478 is rotatably installed in the cleaning box 473. A cleaning roller 475 is installed on the cleaning shaft 478. One side of the cleaning shaft 478 passes through the bottom end of the cleaning box 473 and is installed with a transmission gear 479. The rack 471 is installed at the bottom end of the liquid inlet box 43. The transmission gear 479 is meshed with the rack 471 for transmission. A sliding block 476 is installed at the bottom end of the cleaning box 473. The screw rod 477 is rotatably installed at the bottom end of the cleaning box 473 through a connecting piece. A thread is provided on the screw rod 477. An output motor is installed at one end of the screw rod 477. The sliding block 476 passes through the sliding gap 412 and is threadedly connected to the screw rod 477. An arc-shaped electric valve 472 is installed in the cleaning box 473, and an air pump is externally connected to the cleaning box 473.

[0041] The adjusting device 6 includes a plurality of pipeline supports, a support strip 62, a connecting ring 610 and a fixing ring 69. The pipeline support is located at the bottom end of the cooling tube 42, and the pipeline support is installed on the LED chip 5. The bottom end of the support strip 62 is connected to the top end of the LED chip 5. A gas rod 61 is installed on the top end of the support strip 62. The gas rods 61 are internally connected. The gas rods 61 are connected to the pipeline support 64 through a conversion device 63. One end of the conversion device 63 is connected to the inside of the pipeline support 64, and the other end of the conversion device 63 is connected to the inside of the gas rod 61. The fixing ring 69 is fixed to the bottom end of the cooling tube 42. The fixed ring 69 is installed at one end of the cooling tube 42, a gear ring 68 is rotatably installed on the fixed ring 69, a connecting ring 610 is rotatably connected to the gear ring 68, the connecting ring 610 is installed on the liquid inlet box 43, a flow guide assembly 67 is installed on the fixed ring 69, the flow guide assembly 67 is meshed with the gear ring 68 for transmission, an output pipe 66 is installed on one side of the gas rod 61, the output pipe 66 is connected to the inside of the gas rod 61, a slider 65 is installed at one end of the output pipe 66, the slider 65 is connected to the inside of the output pipe 66, and the slider 65 is connected to the gear ring 68.

[0042] A plurality of pipe supports 64 are provided at the bottom end of each cooling tube 42, and gaps are provided between the sliding supports. The plurality of pipe supports 64 lift up the corresponding cooling tubes 42 above. A first filling medium with a high thermal expansion coefficient is provided in the pipe supports 64. The pipe supports 64 can transfer the heat emitted by the LED chip 5 to the cooling tube 42; a second filling medium is provided in the gas rod 61.

[0043] The conversion device 63 includes a sliding shell 632 and a connecting shell 633. The connecting shell 633 is connected to the gas rod 61. One side of the sliding shell 632 is connected to the pipeline support 64. A curved sliding rod 631 is slidably installed in the sliding shell 632. A piston head 634 is installed at one end of the curved sliding rod 631. The piston head 634 is slidably connected to the inside of the connecting shell 633. The connecting shell 633 is connected to the sliding shell 632.

[0044] The slider 65 includes an output housing 652 , which is installed at one end of an output tube 66 . A connecting slide bar 651 is slidably installed in the output tube 66 , and the connecting slide bar 651 is connected to the gear ring 68 .

[0045] A connecting rod 691 is installed on the fixed ring 69, and the connecting rod 691 passes through the gear ring 68 and is installed with a rotating drum 692, on which a guide assembly 67 is rotatably installed; the gear ring 68 is provided with gear teeth 682, and the gear ring 68 is provided with an arc groove 681, the connecting rod 691 passes through the arc groove 681, and a connecting block 683 is installed on the gear ring 68, and the connecting block 683 is connected to the connecting slide rod 651; the guide assembly 67 includes a guide rotating rod 673, which is rotatably installed on the rotating drum 692, a guide blade 671 is installed at one end of the guide rotating rod 673, and a guide gear 672 is installed at the other end of the guide rotating rod 673, and the guide gear 672 is meshed with the gear ring 68 through the gear teeth 682 for transmission.

[0046] The working principle of the present invention is as follows: the control system turns on the infusion device, and the infusion device inputs the cooling liquid into the liquid inlet box 43. The cooling liquid flows through the first flow velocity probe 49, and passes through the filter plate 413 and flows through the second flow velocity probe 410. Under the impact of the cooling liquid, the first flow velocity probe 49 rotates around the first rotating rod 48, and the top of the first flow velocity probe 49 swings, and drives the first sliding seat 441 to slide on the top of the liquid inlet box 43. The first sliding seat 441 drives the iron core 442 to slide. Similarly, the second sliding seat 453 drives the induction coil 451 to slide. Since the flow velocity of the cooling liquid is lost when passing through the filter plate 413, the impact force on the second flow velocity probe 410 is reduced. Therefore, the swing angle of the second flow velocity probe 410 is smaller than the swing angle of the first flow velocity probe 49. The corresponding sliding distance of the induction coil 451 is smaller than the sliding distance of the iron core 442. At this time, the distance between the two is relatively reduced. The iron core 442 passes through the sliding hole on the second sliding seat 453 and slides inside the induction coil 451, thereby generating an induced electromotive force. The induced electromotive force is transmitted to the control system through the wire. The control system monitors the change in the size of the induced electromotive force. When used for a long time, the filter plate 413 is blocked, the flow rate of the coolant lost after passing through the filter plate 413 increases, the swing angle of the second flow velocity probe 410 decreases, the distance between the iron core 442 and the induction coil 451 is closer than the normal value, and the generated induced electromotive force increases. The control system monitors the induced electromotive force, and when it is higher than the preset value, the automatic cleaning device 47 is started.

[0047] The control system starts the driving motor, and the output shaft of the driving motor drives the screw rod 477 to rotate. The screw rod 477 drives the automatic cleaning device 47 to slide along the sliding gap 412 through the sliding block 476. When the automatic cleaning device 47 slides, it drives the cleaning shaft 478 to slide, and the cleaning shaft 478 drives the transmission gear 479 to move. The transmission gear 479 rotates under the action of the rack 471, and the cleaning shaft 478 drives the cleaning roller 475 to rotate. The control system starts the arc electric valve 472 and the air pump, and the air pump extracts the gas in the cleaning box 473 to generate negative pressure in the cleaning box 473, thereby generating suction in the cleaning box 473. When the automatic cleaning device 47 slides over the filter plate 413, the cleaning roller 475 cleans the surface of the filter plate 413, and the shovel plate 474 scrapes off the attachments on the surface of the filter plate 413. The cleaned attachments are sucked into the cleaning box, thereby realizing automatic cleaning of the filter plate 413, avoiding long-term blockage of the filter plate 413, and preventing the LED chip 5 from overheating and causing light decay.

[0048] When the heat generated by different parts of the LED chip 5 is inconsistent due to long-term use, the heat generated by the LED chip 5 heats the first filling medium in the pipe support 64. The first filling medium expands due to the heat and pushes the curved slide rod 631 to slide. The curved slide rod 631 drives the piston head 634 to slide in the connecting shell 633, so that the second filling medium in the gas rod 61 is compressed. The second filling medium pushes the connecting slide rod 651 to slide. The connecting slide rod 651 drives the gear ring 68 to rotate through the connecting block 683. The gear ring 68 drives the guide rotating rod 673 to rotate through the guide gear 672. The guide rotating rod 673 drives the guide blade 671 to rotate. The guide blade 671 rotates to change the angle. The cooling tubes 42 divide the surface of the LED chip 5 into several parts. In the dry heat dissipation area, the higher the total heat generated by the LED chips 5 in the corresponding area of ​​each cooling tube 42, the greater the total elongation of the curved slide rod 631 in the area, thereby increasing the compression of the second filling medium in the gas rod 61, and further increasing the extension of the connecting slide rod 651, and finally making the guide blade 671 at the corresponding position rotate at a larger angle. Compared with the normal state, the resistance encountered by the coolant when passing through the guide blade 671 is reduced. Since the guide blades 671 form a spiral structure, the coolant flowing through it rotates. When the coolant rotates through the cooling tube 42, it can absorb the heat at the bottom of the cooling tube 42 more evenly, avoiding that only the coolant near the bottom of the cooling tube fully absorbs heat, while the coolant in the upper part absorbs heat incompletely and unevenly.

[0049] Since the cooling areas at the corresponding positions of different cooling tubes 42 have different heat generation, the corresponding guide blades 671 have different rotation angles. In the area with high heat generation, the guide blades 671 have a large rotation angle, small resistance to the passage of coolant, and a higher rotation speed, and the water pressure at the position of the guide component 67 is relatively small. In the area with low heat generation, the corresponding guide blades 671 have a small rotation angle, large resistance to the passage of coolant, and a lower rotation speed, and the water pressure at the position of the guide component 67 is relatively large. Due to the water pressure difference at different positions of the guide components 67, more coolant flows to the area with lower water pressure, thereby achieving the effect of automatic distribution of coolant flow.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A low light decay LED street light, characterized by: The LED street lamp comprises a lamp post (1), a solar panel (2) is mounted on the lamp post (1), a lamp housing (3) is mounted on the lamp post (1), an LED chip (5) is mounted in the lamp housing (3), a light decay protection device (4) is mounted in the lamp housing (3), an adjustment device (6) is mounted on the top of the LED chip (5), the adjustment device (6) is connected to the light decay protection device (4), and the adjustment device (6) is located between the light decay protection device (4) and the LED chip (5); the light decay protection device (4) comprises a liquid outlet box (4); 1), a liquid inlet box (43) and a plurality of cooling pipes (42), one end of the cooling pipe (42) is connected to the interior of the liquid outlet box (41), and the other end of the cooling pipe (42) is connected to the interior of the liquid inlet box (43) through an adjusting device (6), the liquid inlet box (43) is externally connected to an infusion device, and the liquid outlet box (41) is connected to the infusion device through a pipeline, the top of the liquid inlet box (43) is symmetrically provided with rotating seams (46), the bottom of the liquid inlet box (43) is provided with a sliding seam (412), and sealing strips are provided in the rotating seam (46) and the sliding seam (412).

2. The LED street lamp with low light decay rate according to claim 1, characterized in that: The light decay protection device (4) further comprises a plurality of first detectors (44) and a plurality of second detectors (45). A first rotating rod (48) and a second rotating rod (411) are respectively installed in the rotating slit (46). The first detector (44) is slidably installed at the top of the liquid inlet box (43). A first flow velocity measuring head (49) is rotatably installed on the first detector (44). The first flow velocity measuring head (49) is rotatably connected to the first rotating rod (48). The second detector (45) is slidably installed at the top of the liquid inlet box (43). A second flow velocity measuring head (410) is rotatably installed on the second detector (45). The second flow velocity measuring head (410) is rotatably connected to the second rotating rod (411). A filter plate (413) is installed in the liquid inlet box (43). An automatic cleaning device (47) is installed in the liquid inlet box (43). The automatic cleaning device (47) is in contact with the surface of the filter plate (413).

3. The LED street lamp with low light decay rate according to claim 2, characterized in that: The first detector (44) comprises a first sliding seat (441), the first sliding seat (441) is slidably connected to the top of the liquid inlet box (43), an iron core (442) is installed on the first sliding seat (441), and a first flow velocity probe (49) is movably installed on one side of the first sliding seat (441); the second detector (45) comprises a second sliding seat (453), the second sliding seat (453) is slidably installed on the top of the liquid inlet box (43), a coil tube (452) is installed on the second sliding seat (453), an induction coil (451) is wound on the coil tube (452), a second flow velocity probe (410) is movably installed on one side of the second sliding seat (453), and a sliding hole corresponding to the size of the iron core (442) is provided on the other side of the second sliding seat (453).

4. The LED street lamp with low light decay rate according to claim 2, characterized in that: The automatic cleaning device (47) comprises a cleaning box (473), a screw rod (477) and a rack (471). The cleaning box (473) is slidably mounted in the liquid inlet box (43). A shovel plate (474) is mounted on the cleaning box (473). A cleaning shaft (478) is rotatably mounted in the cleaning box (473). A cleaning roller (475) is mounted on the cleaning shaft (478). One side of the cleaning shaft (478) passes through the bottom end of the cleaning box (473) and is mounted with a transmission gear (479). The rack (471) is mounted on the liquid inlet box (43). 43), the transmission gear (479) is meshed with the rack (471) for transmission, a sliding block (476) is installed at the bottom of the cleaning box (473), the screw rod (477) is rotatably installed at the bottom of the cleaning box (473) through a connecting piece, the screw rod (477) is provided with a thread, an output motor is installed at one end of the screw rod (477), the sliding block (476) passes through the sliding gap (412) and is threadedly connected to the screw rod (477), an arc-shaped electric valve (472) is installed in the cleaning box (473), and an air pump is externally connected to the cleaning box (473).

5. The LED street lamp with low light decay rate according to claim 1, characterized in that: The regulating device (6) comprises a plurality of pipeline supports, a support strip (62), a connecting ring (610) and a fixing ring (69); the pipeline support is located at the bottom end of the cooling tube (42); the pipeline support is mounted on the LED chip (5); the bottom end of the support strip (62) is connected to the top end of the LED chip (5); a gas rod (61) is mounted on the top end of the support strip (62); the gas rods (61) are internally connected; the gas rods (61) are connected to the pipeline support (64) via a conversion device (63); one end of the conversion device (63) is internally connected to the pipeline support (64); the other end of the conversion device (63) is internally connected to the gas rod (61); the fixing ring (69) 9) is installed on one end of the cooling pipe (42), a gear ring (68) is rotatably installed on the fixed ring (69), the connecting ring (610) is rotatably connected to the gear ring (68), the connecting ring (610) is installed on the liquid inlet box (43), a guide component (67) is installed on the fixed ring (69), the guide component (67) and the gear ring (68) are meshed for transmission, an output pipe (66) is installed on one side of the gas rod (61), the output pipe (66) is connected to the inside of the gas rod (61), a slider (65) is installed on one end of the output pipe (66), the slider (65) is connected to the inside of the output pipe (66), and the slider (65) is connected to the gear ring (68).

6. The LED street lamp with low light decay rate according to claim 5, characterized in that: The conversion device (63) comprises a sliding shell (632) and a connecting shell (633), wherein the connecting shell (633) is connected to the gas rod (61), one side of the sliding shell (632) is connected to the pipeline support (64), a curved sliding rod (631) is slidably installed in the sliding shell (632), a piston head (634) is installed at one end of the curved sliding rod (631), the piston head (634) is slidably connected to the inside of the connecting shell (633), and the connecting shell (633) is connected to the sliding shell (632).

7. The LED street lamp with low light decay rate according to claim 5, characterized in that: The slider (65) comprises an output housing (652), wherein the output housing (652) is mounted on one end of an output tube (66), a connecting slide rod (651) is slidably mounted in the output tube (66), and the connecting slide rod (651) is connected to the gear ring (68).

8. The LED street lamp with low light decay rate according to claim 7, characterized in that: A connecting rod (691) is installed on the fixing ring (69), the connecting rod (691) passes through the gear ring (68) and is installed with a rotating drum (692), and a flow guide assembly (67) is rotatably installed on the rotating drum (692); The gear ring (68) is provided with gear teeth (682), the gear ring (68) is provided with an arc groove (681), the connecting rod (691) passes through the arc groove (681), the gear ring (68) is installed with a connecting block (683), and the connecting block (683) is connected to the connecting slide rod (651); the guide assembly (67) comprises a guide rotating rod (673), the guide rotating rod (673) is rotatably installed on the rotating drum (692), one end of the guide rotating rod (673) is installed with a guide blade (671), and the other end of the guide rotating rod (673) is installed with a guide gear (672), and the guide gear (672) is meshed with the gear ring (68) through the gear teeth (682) for transmission.

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