A LED street light with low light decay rate

Abstract

The present invention discloses an LED street lamp with low light decay rate, which relates to the technical field of LED street lamps. It includes a lamp post, a solar panel, a lamp housing, a light decay protection device, an LED chip and an adjustment device. The present invention uses a filter plate to filter impurities in the long-term circulating coolant to prevent the impurities from entering the cooling tube and adhering to the wall of the cooling tube, thereby affecting the heat dissipation of the LED, so that the LED street lamp will not produce light decay due to overheating; a first detector is used in conjunction with a second detector to detect the flow rate of the coolant on both sides of the filter plate, thereby detecting the attachments on the filter plate, and when the attachments on the filter net are higher than the index value, the automatic cleaning device is activated to clean it. When the coolant passes through the guide vane, the resistance it encounters is reduced and it 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 top absorbs heat incompletely and unevenly.

Description

Technical Field

[0001] The present 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 LED streetlight light decay rate refers to the rate at which the luminous intensity of an LED streetlight decreases over time during use. Luminous decay is a key indicator of LED lamp performance degradation, affecting not only the lighting effect but also the lifespan of the LED streetlight. Many factors influence luminous decay, including the quality of the light-emitting chip, packaging process, heat dissipation, and current drive. Heat dissipation is the most significant factor affecting luminous decay during use. Failure to dissipate heat effectively and promptly will cause the light-emitting chip temperature to rise, accelerating the process of luminous decay. Therefore, good thermal management is key to reducing luminous decay.

[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 objectives, the present invention provides the following technical solutions: an LED street lamp with low light decay rate, comprising a lamp post, a solar panel installed on the lamp post, a lamp housing installed on the lamp post, an LED chip installed in the lamp housing, a light decay protection device installed in the lamp housing, 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 several cooling pipes, one end of the cooling pipe is connected to the interior of the liquid outlet box, and the other end of the cooling pipe is connected to the interior of the liquid inlet box through the adjustment device, an infusion device is connected to the outside of the liquid inlet box, and 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 inside 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 through the pipeline to the infusion device, which can cool the high-temperature coolant and recycle it; the solar panel is used to convert solar energy into electrical energy to provide electricity for the LED street light; and the LED chip is used for lighting.

[0007] The light attenuation 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 slot. The first detector is slidably mounted on the top of the liquid inlet tank. A first flow velocity probe is rotatably mounted on the first detector and is rotatably connected to the first rotating rod. The second detector is slidably mounted on the top of the liquid inlet tank. A second flow velocity probe is rotatably mounted on the second detector and is rotatably connected to the second rotating rod. A filter plate is installed in the liquid inlet tank, and an automatic cleaning device is installed in the liquid inlet tank. The automatic cleaning device is bonded to the surface of the filter plate. The filter plate is used to filter impurities in the long-term circulating coolant.

[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 tank and is equipped with an iron core. A first flow velocity probe is movably mounted on one side of the first sliding seat. The second detector includes a second sliding seat, which is slidably mounted on the top of the liquid inlet tank and is equipped with a coil barrel around which an induction coil is wound. A second flow velocity probe is movably mounted 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. Strip grooves are provided on both the first and second sliding seats, and the first and second flow velocity probes slide and rotate on the strip grooves of the first and second sliding seats, 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 is meshed 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 screw to rotate. The 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. 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 clogging of the filter plate, and preventing the LED chip from overheating and causing light decay.

[0012] The adjusting device includes several pipe supports, support bars, connecting rings and fixed rings. The pipe support is located at the bottom end of the cooling pipe, and the pipe 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 pipe support through a conversion device. One end of the conversion device is connected to the inside of the pipe 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 pipe, 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] Several pipe supports are provided at the bottom of each cooling tube, and gaps are provided between the sliding supports. Several pipe supports support 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 LED chip generates inconsistent heat in different parts 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. Several cooling tubes divide the surface of the LED chip into several heat dissipation areas. Each cooling tube has a certain cooling effect on the LED chip. 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. Since the guide vanes form a spiral structure, 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 corresponding positions of different cooling tubes have different heat generation, the corresponding guide blades have different rotation angles. In areas with high heat generation, the guide blades have large rotation angles, small resistance to coolant passing through, and a higher rotation speed. The water pressure at the guide component position is relatively small. In areas with low heat generation, the corresponding guide blades have small rotation angles, large resistance to coolant passing through, and a lower rotation speed. 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 areas 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 mounted on one end of an output tube. A connecting slide rod is slidably mounted in the output tube and 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 slide 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 engaged 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 circulated for a long time to prevent impurities from entering the cooling pipe and adhering to the wall of the cooling pipe, 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 and 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 filter plate surface. 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 fully absorbs heat, while the coolant at the upper part absorbs heat incompletely and unevenly.

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

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

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

[0026] Figure 3 This 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 area A in the middle;

[0028] Figure 5 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] Figure 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 slit; 47. automatic cleaning device; 48. first rotating rod; 49. first flow velocity probe; 410. second flow velocity probe; 411. second rotating rod; 412. sliding slit; 441. first sliding seat; 442. iron core; 451. induction coil; 452. coil bobbin; 453. second sliding seat; 471. rack; 472. arc-shaped 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. Bending slide rod; 632. Sliding housing; 633. Connecting housing; 634. Piston head; 651. Connecting slide rod; 652. Output housing; 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 provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall 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 low light decay rate: it includes a lamp post 1, a solar panel 2 is installed on the lamp post 1, a lamp housing 3 is installed on the lamp post 1, an LED chip 5 is installed in the lamp housing 3, a light decay protection device 4 is installed in the lamp housing 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 pipes 42, one end of the cooling pipe 42 is connected to the inside of the liquid outlet box 41, and the other end of the cooling pipe 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 a rotating seam 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, which is used to control the entire LED street lamp; the infusion device is used to deliver low-temperature coolant to the liquid inlet tank 43; the liquid outlet tank 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 electricity for the LED street lamp; the LED chip 5 is used for lighting.

[0037] The optical decay protection device 4 also 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 mounted in a rotating slot 46. The first detector 44 is slidably mounted on the top of the liquid inlet tank 43. A first flow velocity probe 49 is rotatably mounted on the first detector 44 and is rotatably connected to the first rotating rod 48. The second detector 45 is slidably mounted on the top of the liquid inlet tank 43. A second flow velocity probe 410 is rotatably mounted on the second detector 45 and is rotatably connected to the second rotating rod 411. A filter plate 413 is mounted in the liquid inlet tank 43. An automatic cleaning device 47 is mounted in the liquid inlet tank 43 and is bonded to the surface of the filter plate 413. The filter plate 413 is used to filter impurities in the long-term circulating coolant.

[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, and a second flow velocity probe 410 is movably installed on one side of the second sliding seat 453. 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 of 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 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 several pipe supports, support bars 62, connecting rings 610 and fixing rings 69. The pipe support is located at the bottom end of the cooling tube 42, and the pipe support is installed on the LED chip 5. The bottom end of the support bar 62 is connected to the top of the LED chip 5. The top of the support bar 62 is equipped with a gas rod 61. The gas rods 61 are internally connected. The gas rods 61 are connected to the pipe support 64 through a conversion device 63. One end of the conversion device 63 is connected to the inside of the pipe support 64, and the other end of the conversion device 63 is connected to the inside of the gas rod 61. The fixed ring 69 is installed at one end of the cooling tube 42, and 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. The guide component 67 is installed on the fixed ring 69. The guide component 67 is engaged 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. There is a gap between the sliding supports. The plurality of pipe supports 64 support the corresponding cooling tube 42 above. A first filling medium with a high thermal expansion coefficient is provided in the pipe support 64. The pipe support 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 pipe 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 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 .

[0045] A connecting rod 691 is installed on the fixed ring 69, which passes through the gear ring 68 and is installed with a rotating drum 692, and a guide assembly 67 is rotatably installed on the rotating drum 692; 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 651; the guide assembly 67 includes a guide rotating rod 673, which is rotatably installed on the rotating drum 692, and 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 engaged 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 coolant into the liquid inlet box 43. The coolant 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 coolant, 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 coolant will be 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. Angle, 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, and 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, which 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 starts the automatic cleaning device 47 when it is higher than the preset value.

[0047] The control system turns on the drive motor, and the output shaft of the drive 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. The cleaning shaft 478 drives the transmission gear 479 to move. The transmission gear 479 rotates under the action of the rack 471. The cleaning shaft 478 drives the cleaning roller 475 to rotate. The control system turns on the arc electric valve 472 and the air pump. The air pump extracts the gas in the cleaning box 473, creating a 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 clogging of the filter plate 413, and preventing the LED chip 5 from overheating and causing light decay.

[0048] When the LED chip 5 generates inconsistent heat in different parts 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 and changes its 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 generation of 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 making the compression of the second filling medium in the gas rod 61 greater, and the extension of the connecting slide rod 651 longer, and finally making the rotation angle of the guide blade 671 at the corresponding position larger, and 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 corresponding positions of different cooling tubes 42 have different heat generation, the corresponding guide blades 671 rotate at different angles. In areas with high heat generation, the guide blades 671 rotate at a large angle, the resistance to the coolant passing through is small, and the generated rotation speed is higher. The water pressure at the position of the guide component 67 is relatively small. In areas with low heat generation, the corresponding guide blades 671 rotate at a small angle, the resistance to the coolant passing through is large, and the generated rotation speed is low. 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, the coolant flows more to the area with lower water pressure, thereby achieving the effect of automatic distribution of the coolant flow.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed 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 tubes (42), one end of the cooling tube (42) is communicated with the interior of the liquid outlet box (41), and the other end of the cooling tube (42) is communicated with 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 a rotating seam (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); The light decay protection device (4) further comprises a plurality of first detectors (44) and a plurality of second detectors (45), wherein a first rotating rod (48) and a second rotating rod (411) are respectively installed in the rotating slot (46), wherein the first detector (44) is slidably installed at the top of the liquid inlet box (43), wherein a first flow velocity probe (49) is rotatably installed on the first detector (44), and the first flow velocity probe (49) is rotatably connected to the first rotating rod (48), wherein the second detector (45) is slidably installed at the top of the liquid inlet box (43), wherein a second flow velocity probe (410) is rotatably installed on the second detector (45), and the second flow velocity probe (410) is rotatably connected to the second rotating rod (411), wherein a filter plate (413) is installed in the liquid inlet box (43), wherein an automatic cleaning device (47) is installed in the liquid inlet box (43), and wherein the automatic cleaning device (47) is in contact with the surface of the filter plate (413).

2. The low light decay LED street light according to claim 1, characterized in that: The first detector (44) includes 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) includes a second sliding seat (453), the second sliding seat (453) is slidably installed on the top of the liquid inlet box (43), a coil barrel (452) is installed on the second sliding seat (453), an induction coil (451) is wound around the coil barrel (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).

3. The low light decay LED street light according to claim 1, characterized in that: 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 on 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, 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).

4. The low light decay LED street light according to claim 1, characterized in that: The regulating device (6) includes a plurality of pipe supports, a support bar (62), a connecting ring (610) and a fixing ring (69), wherein the pipe support is located at the bottom end of the cooling pipe (42), the pipe support is mounted on the LED chip (5), the bottom end of the support bar (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 bar (62), the gas rods (61) are internally connected, the gas rods (61) are connected to the pipe support (64) through a conversion device (63), one end of the conversion device (63) is internally connected to the pipe support (64), the other end of the conversion device (63) is internally connected to the gas rod (61), and the fixing ring (69) is connected to the pipe support (64). 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 assembly (67) is installed on the fixed ring (69), the guide assembly (67) and the gear ring (68) are meshed and driven, an output pipe (66) is installed on one side of the gas rod (61), the output pipe (66) is communicated with the inside of the gas rod (61), a slider (65) is installed on one end of the output pipe (66), the slider (65) is communicated with the inside of the output pipe (66), and the slider (65) is connected to the gear ring (68).

5. The low light decay LED street light according to claim 4, characterized in that: The conversion device (63) includes a sliding housing (632) and a connecting housing (633), wherein the connecting housing (633) is connected to the gas rod (61), and one side of the sliding housing (632) is connected to the pipe support (64). A curved sliding rod (631) is slidably installed in the sliding housing (632), and 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 housing (633), and the connecting housing (633) is connected to the sliding housing (632).

6. The low light decay LED street light according to claim 4, characterized in that: The slider (65) includes an output housing (652), 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).

7. The low light decay LED street light according to claim 6, characterized in that: The fixing ring (69) is provided with a connecting rod (691), the connecting rod (691) passes through the gear ring (68) and is provided with a rotating drum (692), and the rotating drum (692) is provided with a flow guide assembly (67) rotatably mounted 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), and the gear ring (68) is provided with a connecting block (683) The connecting block (683) is connected to the connecting slide rod (651); the guide assembly (67) includes a guide rotating rod (673), the guide rotating rod (673) is rotatably mounted on the rotating drum (692), one end of the guide rotating rod (673) is mounted with a guide blade (671), and the other end of the guide rotating rod (673) is mounted 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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