Energy-saving dimmable LED street lamp

Abstract

This invention discloses an energy-saving dimming LED street light, specifically relating to the field of energy-saving lighting equipment technology. It includes symmetrically hinged lamp holders, on which a low-brightness lamp panel, a medium-brightness lamp panel, and a high-brightness lamp panel are sequentially installed, distributed from one adjacent side to the other. The two lamp holders are driven to rotate, switching between a "V" shape and a "∧" shape distribution. When switched to the "∧" shape, the high-brightness lamp panel is turned off. The energy-saving dimming LED street light provided by this invention expands the illumination surface of the low-brightness, medium-brightness, and high-brightness lamp panels by rotating the two lamp holders into a "V" shape, and then turns them off again to a "∧" shape, reducing the brightness of the street light. Simultaneously, the illumination surface of the low-brightness and medium-brightness lamp panels narrows. Then, a diffused light plate rotates and is positioned below the "∧" shaped lamp holder, further weakening the brightness around the illuminated surface to reduce the impact on nearby residents' rest.

Description

Technical Field

[0001] This invention relates to the field of energy-saving lighting equipment technology, and specifically to an energy-saving dimming LED street light. Background Technology

[0002] LED streetlights have the advantage of low energy consumption compared to traditional lighting equipment. They can significantly reduce power consumption while providing the same light output, thereby reducing electricity costs.

[0003] According to Chinese Patent Publication No. CN202190448U, published on April 11, 2012, a PWM temperature-controlled street light is disclosed, which consists of a lamp housing, an aluminum substrate, a temperature probe, a pulse width modulation circuit connection, a PWM constant current drive circuit, and LEDs. An aluminum substrate is disposed inside the lamp housing, and a temperature probe and several LEDs are mounted on the aluminum substrate. The temperature probe is connected to the pulse width modulation circuit through a connecting wire. The pulse width modulation circuit is connected to the PWM constant current drive circuit, and the PWM constant current drive circuit is connected to the LEDs.

[0004] In the prior art, including the aforementioned patents, the use of LED streetlights currently involves adjusting the brightness of the streetlights. PWM (Pulse Width Modulation) control technology, as a mature technology, can effectively control the brightness of the lights, thereby achieving energy-saving effects. As for streetlights within residential communities, due to the large number of residents using LEDs, effective adjustments are needed. To increase the illumination area of ​​LEDs, two lighting methods are generally adopted: one is to increase the height of the LEDs, and the other is to use an upward tilt angle to increase the illumination area of ​​the LEDs to cope with the peak traffic period from 6:00 to 10:00 AM. However, this method of LED deployment has certain drawbacks. For lower-floor residents within the LED illumination area, the fixed tilt angle causes the light to continuously shine into their homes, especially during the period from 10:00 PM to 6:00 AM the next morning, which is mostly the residents' rest time. During this period, the continuous illumination from the streetlights will affect the residents' rest. Although PWM (Pulse Width Modulation) control technology can reduce the brightness of the light, because the LED body has a fixed tilt angle, it still has a wide light radiation area even at low illumination levels, so it will still have a certain impact on the rest of residents in a large area near the LED body. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving dimming LED street light to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving dimming LED street light, comprising a lamp frame symmetrically hinged, wherein a low-brightness lamp panel, a medium-brightness lamp panel, and a high-brightness lamp panel are sequentially installed on the two lamp frames from one adjacent side to the other.

[0007] The two lamp holders are driven to flip and switch between two distribution states: "V" shape and "∧" shape. When switching to the "∧" shape, the high-brightness lamp panel is turned off.

[0008] It also includes a rotatable diffused light panel, which is located below the lamp holder when switched to the “∧” shape.

[0009] Preferably, there are two diffused light plates, which are fixedly installed on the lamp holder respectively, and the distance between the ends of the two diffused light plates is adjustable when switching between the "V" shape and the "∧" shape distribution states.

[0010] Preferably, a hanging plate is fixedly installed on the outer wall of the hinge shaft on the lamp holder, and a lamp cover is arranged on the lamp holder. A pulling member for deflecting the hinge shaft is fixedly connected between the main electric push rod fixedly installed inside the lamp cover and the two hanging plates.

[0011] Preferably, the pulling member is fixedly installed on the positioning block provided at the output end of the main electric push rod, and the clamping plate hinged inside the lampshade is movably disposed within the toothed row provided on the positioning block.

[0012] Preferably, a lever is slidably disposed in the sliding cavity opened on the lampshade and is movably connected to the card plate, and the lampshade is provided with a single air valve and a fine pore respectively communicating with the sliding cavity. After the positioning block pushes the lever to reset, the single air valve closes and the card plate disengages from the toothed rack.

[0013] Preferably, the lampshade has air inlets on the opposite outer walls on both sides, located on one side of the lamp holder. The lampshade has elastic plates that are symmetrically fixed inside and inclined inward to block the air inlets. A narrow air vent is provided on the elastic plate near the lamp holder.

[0014] Preferably, the heat dissipation plate consists of a short plate and a long plate arranged in a symmetrical hinged configuration. When the two lamp holders are in a "V" shape, the short plate is attached to the high-brightness lamp plate, and when the two lamp holders are in a "∧" shape, the lamp holders push the heat dissipation plate so that the long plate is attached to the low-brightness lamp plate and the medium-brightness lamp plate.

[0015] Preferably, the elastic plate is movable on the heat dissipation plate, and the air guide and air intake openings on the short plate are connected when the two lamp holders are in the "∧" shape.

[0016] Preferably, the mounting block includes a mounting block with reflective walls symmetrically arranged on its two outer walls. The elastic reflectors symmetrically and movably arranged inside the mounting block extend out of the bottom of the mounting block when the two lamp holders are in the "∧" position.

[0017] Preferably, when the two lamp holders switch from a "V" shape to a "∧" shape, their ends respectively push against the protrusions provided on the elastic reflector, and the protrusions deform to drive the bottom end of the elastic reflector to extend out of the bottom of the mounting block.

[0018] In the above technical solution, the energy-saving dimming LED street light provided by the present invention has the following beneficial effects: by flipping the two lamp holders into a "V" shape to expand the illumination surface of the low-brightness lamp panel, the medium-brightness lamp panel and the high-brightness lamp panel, and by flipping the two lamp holders again into a "∧" shape and turning off the high-brightness lamp panel, the brightness of the street light is reduced, and the illumination surface of the low-brightness lamp panel and the medium-brightness lamp panel is narrowed. Then, by rotating the diffused light plate to be located below the "∧" shaped lamp holder, the brightness of the surrounding area of ​​the light illumination surface is further weakened, so as to reduce the impact on the rest of the surrounding residents. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the light pole provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the side structure of a lamp post provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom structure of the lampshade provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the lampshade provided in an embodiment of the present invention;

[0024] Figure 5 This is an enlarged cross-sectional structural diagram of the lampshade portion provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the lamp holder provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the positioning block provided in an embodiment of the present invention;

[0027] Figure 8 Provided for embodiments of the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 9 Provided for embodiments of the present invention Figure 3 Enlarged structural diagram at point B;

[0029] Figure 10 Provided for embodiments of the present invention Figure 4 Enlarged structural diagram at point C;

[0030] Figure 11 Provided for embodiments of the present invention Figure 10 Enlarged structural diagram at point D;

[0031] Figure 12 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point E;

[0032] Figure 13 Provided for embodiments of the present invention Figure 6 Enlarged structural diagram at point F;

[0033] Figure 14 Provided for embodiments of the present invention Figure 12 Enlarged structural diagram at point G;

[0034] Figure 15 Provided for embodiments of the present invention Figure 13 Enlarged structural diagram at point H;

[0035] Figure 16 This is a schematic cross-sectional view of the low-brightness lamp panel and the medium-brightness lamp panel provided in an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Lamp post; 2. Cleaning pad; 3. Lamp holder; 4. Main electric push rod; 5. Clamping plate; 6. Flexible reflector; 7. Long plate; 11. Lampshade; 12. Storage cavity; 13. Extension platform; 14. Heat outlet; 15. Mounting block; 16. Guide groove; 17. Air inlet; 18. Functional cavity; 19. Reflector wall; 31. High-brightness lamp panel; 32. Medium-brightness lamp panel; 33. Low-brightness lamp panel; 34. Diffuse light translucent panel; 35. Fitting sponge pad; 36. Hinge shaft; 37. Hanger 38. Plate; 39. First torsion spring; 40. Pulling component; 41. First guide shaft; 42. Second guide shaft; 43. Phase change shaft; 44. Positioning block; 45. Slide plate; 46. Pulling spring; 47. Toothed rack; 51. Waist groove; 52. Second torsion spring; 53. Lever; 54. Protruding rod; 55. Extension rod; 56. Slide cavity; 57. Single air valve; 58. Fine pore; 61. Protrusion; 71. Short plate; 72. Air guide; 73. Elastic plate; 74. Narrow air outlet. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1-16 As shown, an energy-saving dimming LED street light includes a lamp holder 3 that is symmetrically hinged. A low-brightness lamp panel 33, a medium-brightness lamp panel 32 and a high-brightness lamp panel 31 are sequentially installed on the two lamp holders 3, distributed from one side to the other.

[0040] The two lamp holders 3 are driven to flip and switch between two distribution states: "V" shape and "∧" shape. When switching to the "∧" shape, the high-brightness lamp panel 31 is turned off.

[0041] It also includes a rotatable diffused light plate 34, which is located below the lamp holder 3 when switched to the “∧” shape.

[0042] Specifically, the system includes a lamp post 1 and a lampshade 11 bolted to its top. Two lamp holders 3 are symmetrically hinged within the lampshade 11. A low-brightness lamp panel 33, a medium-brightness lamp panel 32, and a high-brightness lamp panel 31 are respectively bolted or screwed to the two lamp holders 3. During peak pedestrian traffic hours from 6 PM to 10 PM, the two lamp holders 3 are rotated synchronously, causing adjacent ends of the two lamp holders 3 to fold down in a V-shape. At this time, the low-brightness lamp panel 33, the medium-brightness lamp panel 32, and the high-brightness lamp panel 31 protrude further from the lampshade 11 to expand their illumination area. Furthermore, because the low-brightness lamp panel 33 is located on the adjacent side of the two lamp holders 3, [the illumination area is further expanded]. Figure 8 As shown, when standing on the side of the lamp post 1, one can first see the low-brightness lamp panel 33 and the medium-brightness lamp panel 32, which are flipped into a "V" shape. Then, as the pedestrian gradually approaches the lamp post 1, they gradually move below the lamp cover 11 and can then see the high-brightness lamp panel 31. Therefore, by first seeing the low-brightness lamp panel 33 and the medium-brightness lamp panel 32, and then seeing the high-brightness lamp panel 31 as they approach the lamp post 1, the brightness perceived by the pedestrian gradually increases. This reduces the instantaneous glare caused by the full brightness of the streetlight hitting the pedestrian's eyes while walking, allowing the pedestrian to gradually accept the brightness of the light.

[0043] Furthermore, during the period from 10 PM to 6 AM the next morning when residents are asleep, the two lamp holders 3 are simultaneously flipped up, so that adjacent ends of the two lamp holders 3 flip upwards to form a shape similar to "∧". At this time, the high-brightness lamp panel 31 is turned off to reduce the brightness of the streetlights, thereby saving energy. The two lamp holders 3 are also flipped into the lampshade 11 to narrow the illumination surface of the low-brightness lamp panel 33 and the medium-brightness lamp panel 32. Simultaneously, the lampshade 11 can also shield the low-brightness lamp panel 33 and the medium-brightness lamp panel 32 to reduce light pollution to surrounding residents. Furthermore, since the two lamp holders 3 are simultaneously flipped up at one end to form a shape similar to "∧", the light illumination surfaces of the low-brightness lamp panel 33 and the medium-brightness lamp panel 32 on the two lamp holders 3 intersect, and the brightness in the intersection area will be enhanced. Therefore, when the street light illumination surface is reduced and the high-brightness lamp panel 31 is turned off to reduce the light intensity, the light from the low-brightness lamp panel 33 and the medium-brightness lamp panel 32 is converged to reduce the illumination surface. At the same time, the light intensity in the area where their illumination surfaces intersect is increased, so that when some pedestrians need street lights, the street lights can provide a light with sufficient intensity, thereby improving the applicability of the street lights.

[0044] Furthermore, when the two lamp holders 3 switch to the “∧” shape, the diffused light plate 34 rotates to be located below the lamp holder 3. The diffused light plate 34 then weakens the illumination brightness of the surrounding area by the low-brightness lamp plate 33 and the medium-brightness lamp plate 32 on the lamp holder 3 to a certain extent, thereby further reducing the impact of light pollution on the surrounding residents.

[0045] The two lamp holders 3 can be rotated by being driven by motors respectively; or by being driven by electric push rods in conjunction with connecting rods respectively; or by other methods known to those skilled in the art for controlling the rotation of the two lamp holders 3.

[0046] The diffuser plate 34 can be rotated manually, driven by a motor, or by any other method known to those skilled in the art.

[0047] The high-brightness light board 31 can be turned off by connecting the low-brightness light board 33, the medium-brightness light board 32, and the high-brightness light board 31 to the circuit via an STM32 microcontroller. The STM32 microcontroller is electrically connected to the power supply for the streetlights. By using the timer and circuit switch on the STM32 microcontroller, at 6 PM, the STM32 microcontroller, in conjunction with the circuit switch, simultaneously turns on the low-brightness light board 33, the medium-brightness light board 32, and the high-brightness light board 31. It can also control the motor or electric push rod used to drive the lamp holder 3 to rotate. At this time, the two lamp holders 3 are driven to rotate into a "V" shape, and the low-brightness light board 33, the medium-brightness light board 32, and the high-brightness light board 31 are lit up respectively. At 10 PM, the STM32 microcontroller again controls the motor or electric push rod used to drive the lamp holder 3 to rotate into a "∧" shape. At the same time, the STM32 microcontroller uses the program in its chip to control the circuit switch and turn off the high-brightness light board 31 separately. At 6:00 AM, the STM32 microcontroller again controls the circuit switch to turn off the remaining low-brightness LED board 33 and medium-brightness LED board 32.

[0048] Alternatively, the motors or electric push rods that control the flipping of the low-brightness lamp panel 33, medium-brightness lamp panel 32, and high-brightness lamp panel 31, as well as the control lamp holder 3 and the diffused light transmission panel 34, are respectively connected to the control circuit board and control switch set on the lamp post 1 by control lines or wire circuits. The control circuit board and control switch are respectively connected to a remote control computer terminal. The computer terminal sends instructions to drive the control switch to open the motor or electric push rod, or to open the low-brightness lamp panel 33, medium-brightness lamp panel 32, and high-brightness lamp panel 31, so as to control the lamp at any time.

[0049] The control methods using STM32 microcontrollers, control circuit boards, and computer terminals are well-known to those skilled in the art and will not be elaborated upon here.

[0050] The diffused light transparent panel 34 is a frosted plastic panel.

[0051] The low-brightness light panel 33, the medium-brightness light panel 32, and the high-brightness light panel 31 are LED light panels.

[0052] In the above technical solution, the illumination surface of the low-brightness lamp panel 33, the medium-brightness lamp panel 32, and the high-brightness lamp panel 31 is expanded by flipping the two lamp holders 3 into a "V" shape. Then, the high-brightness lamp panel 31 is turned off by flipping the two lamp holders 3 again into a "∧" shape. At this time, the brightness of the street light is reduced, and the illumination surface of the low-brightness lamp panel 33 and the medium-brightness lamp panel 32 is narrowed. Then, the diffused light plate 34 is rotated and positioned below the "∧" shaped lamp holder 3, thereby further weakening the brightness around the illumination surface of the light, so as to reduce the impact on the rest of the surrounding residents.

[0053] As a further embodiment of the present invention, there are two diffused light plates 34, which are respectively fixedly installed on the lamp holder 3, and the distance between the ends of the two diffused light plates 34 is adjustable when switching between the "V" shape and the "∧" shape distribution states.

[0054] Specifically, the lampshade 11 has a storage cavity 12 at its bottom, and the two lamp holders 3 are respectively hinged to the inner wall of the storage cavity 12. The two diffused light plates 34 are respectively fixedly installed on opposite ends of the two lamp holders 3. The lamp holders 3 are aluminum alloy frames, and the diffused light plates 34 are fixedly installed on the lamp holders 3 with screws.

[0055] Furthermore, when the two lamp holders 3 are driven to rotate into a "V" shape, the two diffused light plates 34 are respectively attached to the lampshade 11, and the distance between the ends of the two diffused light plates 34 is at its maximum, thus avoiding obstruction of the low-brightness lamp panel 33, the medium-brightness lamp panel 32, and the high-brightness lamp panel 31, affecting their illumination. When the two lamp holders 3 are driven to rotate again into a "∧" shape, the lamp holders 3 are stored in the storage cavity 12, thereby narrowing the illumination range of the low-brightness lamp panel 33, the medium-brightness lamp panel 32, and the high-brightness lamp panel 31. At the same time, the two diffused light plates 34 rotate and swing downwards synchronously. After the two diffused light plates 34 stop swinging downwards, the distance between the ends of the two diffused light plates 34 is at its minimum. Figure 13 As shown, by using two diffused light panels 34, the light emitted outward from the low-brightness light panel 33 and the medium-brightness light panel 32 is blocked, and the light is diffused and weakened, so as to further reduce the impact of light pollution on surrounding residents.

[0056] As another embodiment of the present invention, a hanging plate 37 is fixedly installed on the outer wall of the hinge shaft 36 provided on the lamp holder 3, and a lamp cover 11 is arranged on the lamp holder 3. A pulling member 39 for deflecting the hinge shaft 36 is fixedly connected between the main electric push rod 4 fixedly installed inside the lamp cover 11 and the two hanging plates 37.

[0057] Specifically, the pulling component 39 is a nylon rope or a steel wire rope. The hanging plate 37 is fixedly welded to the hinge shaft 36, and the main electric push rod 4 is fixedly installed on the lampshade 11 by bolts and nuts. The bottom of the lampshade 11 is symmetrically arranged with extension platforms 13 on both sides of the opening of the storage cavity 12. The extension platform 13 has a functional cavity 18. The hanging plate 37 is located in the functional cavity 18. The outer wall of the hinge shaft 36 is fitted with a first torsion spring 38, and the two ends of the first torsion spring 38 are fixedly installed on the inner wall of the functional cavity 18 and the hanging plate 37, respectively. The two ends of the first torsion spring 38 are hooked onto the hanging rings provided on the inner wall of the functional cavity 18 and the hanging plate 37, respectively. The functional cavity 18 is symmetrically arranged with a first guide shaft 41 and a second guide shaft 42, and the functional cavity 18 is also rotatably arranged with a phase-changing shaft 43. The traction members 39 on the two hanging plates 37 move on the two first guide shafts 41 and the two second guide shafts 42 respectively, and then simultaneously attach to the phase-changing shaft 43. When the main electric push rod 4 pushes the two traction members 39 to make the traction members 39 pull the two hanging plates 37 to swing, the two hinge shafts 36 deflect respectively and make the two lamp holders 3 switch from "∧" shape to "V" shape, and the first torsion spring member 38 deforms and stores force.

[0058] Furthermore, when the main electric push rod 4 retracts to its original position, the first torsion spring 38 releases its stored force to drive the lamp holder 3 to reset and switch the lamp holder 3 from a "V" shape to a "∧" shape. Then, through the extension and retraction of the main electric push rod 4, the two lamp holders 3 are simultaneously switched between the "V" shape and the "∧" shape, so as to quickly and synchronously adjust the angle of the lamp holder 3 and the light angle.

[0059] As another embodiment of the present invention, the traction member 39 is fixedly installed on the positioning block 44 provided at the output end of the main electric push rod 4, and the card plate 5 hinged inside the lamp cover 11 is movably disposed in the toothed rack 47 provided on the positioning block 44.

[0060] Specifically, the positioning block 44 is fixedly installed on the output end of the main electric push rod 4 using bolts and nuts. A second torsion spring 52 is sleeved on the hinge rod of the clamping plate 5. The two ends of the second torsion spring 52 are respectively fixedly installed on the inner wall of the functional cavity 18 and on the clamping plate 5. The two ends of the second torsion spring 52 are respectively hooked onto the hanging rings provided on the inner wall of the functional cavity 18 and on the clamping plate 5. The second torsion spring 52 drives the end of the clamping plate 5 to fit against the toothed rack 47. Figure 11As shown, when the main electric push rod 4 pushes the positioning block 44 to move, the positioning block 44 pulls the two pulling members 39, causing the pulling members 39 to pull the two hanging plates 37 to swing. While the positioning block 44 moves, the locking plate 5 switches between the teeth of the gear 47. When the main electric push rod 4 pushes the positioning block 44 and the two lamp holders 3 switch from a "∧" shape to a "V" shape, the first torsion spring 38 deforms and stores power. Simultaneously, the locking plate 5 is located on the side of the last tooth of the gear 47. When power to the main electric push rod 4 is stopped, although the first torsion spring 38 releases its stored power, the locking plate 5 pushes against the last tooth of the gear 47 to prevent the positioning block 44 from resetting and to maintain the "V" shape of the two lamp holders 3. Stopping power to the main electric push rod 4 reduces power consumption and wear caused by prolonged use. This saves energy and extends the service life of the main electric push rod 4.

[0061] As another embodiment of the present invention, a lever 53 is slidably disposed in the sliding cavity 56 opened on the lampshade 11 and is movably connected to the card plate 5. The lampshade 11 is provided with a single air valve 57 and a fine pore 58 respectively connected to the sliding cavity 56. After the positioning block 44 pushes the lever 53 to reset, the single air valve 57 is closed and the card plate 5 is disengaged from the toothed rack 47.

[0062] Specifically, the card plate 5 has a waist groove 51, and the protruding rod 54 on the lever 53 moves within the waist groove 51. An extension rod 55 is fixedly installed on the lever 53, and the extension rod 55 and the lever 53 are integrally formed. A sliding plate 45 is slidably installed on the positioning block 44, and a tension spring 46 is fixedly installed between the positioning block 44 and the sliding plate 45. The fine pore 58 is connected to the functional cavity 18.

[0063] When the main electric push rod 4 pushes the positioning block 44 to move so that the two lamp holders 3 switch from a "∧" shape to a "V" shape, the clamping plate 5 pushes the last tooth of the toothed rack 47 to prevent the positioning block 44 from resetting after the main electric push rod 4 stops supplying power. In this state, in order to enable the positioning block 44 to reset when needed, the main electric push rod 4 is supplied with power and continues to push the positioning block 44 to move. At this time, since the pulling member 39 can no longer be pulled, the pulling spring 46 deforms and stores force as the positioning block 44 moves, and the positioning block 44 pushes the extension rod 55. Then the extension rod 55 drives the lever 53 to compress the slide cavity 56. At this time, the single vent valve 57 opens so that the gas in the slide cavity 56 is discharged from the slide cavity 56 along the single vent valve 57 and the fine pore 58. At the same time, the lever 53 slides so that the protruding rod 54 slides in the waist groove 51 and moves the clamping plate 5 to flip and disengage from the toothed rack 47, and the second torsion spring 52 deforms and stores force.

[0064] Then, by driving the main electric push rod 4 to retract to its original position again, the single vent valve 57 is closed. As the second torsion spring 52 and the tension spring 46 release their stored force, the air in the functional cavity 18 can only slowly enter the sliding cavity 56 through the fine pores 58, thereby causing the locking plate 5 to slowly reset. During the slow reset of the locking plate 5, the retraction of the main electric push rod 4 can prevent the locking plate 5 from blocking the reset of the positioning block 44. At the same time, the extension and retraction of the main electric push rod 4, combined with the push of the locking plate 5 to lock the positioning block 44 and the slow release to unlock, realizes the operation of driving, fast locking and unlocking of the positioning block 44, so that the state of the two lamp holders 3 can still be maintained when the power supply to the main electric push rod 4 is stopped.

[0065] As the preferred embodiment of the present invention, the lampshade 11 has air inlets 17 on the opposite outer walls on both sides, located on one side of the lamp holder 3. The lampshade 11 is symmetrically fixedly installed with elastic plates 73 that are inclined inward and used to block the air inlets 17. A narrow air inlet 74 is provided on the elastic plate 73 near the lamp holder 3.

[0066] Specifically, the elastic plate 73 is fixedly installed on the inner wall of the storage cavity 12 with screws, the air inlet 17 is connected to the storage cavity 12, and the two lamp holders 3 are located on one side of the air inlet 17 inside the storage cavity 12.

[0067] like Figure 12 As shown, when the two lamp holders 3 are in a "V" shape, the elastic plate 73, the inner wall of the storage cavity 12, and the enclosure of the lamp holder 3 gradually narrow the channel from the air inlet 17 to the narrow air outlet 74. According to the septum effect, when airflow or liquid flows through a narrow terrain, the flow velocity increases due to the narrowing of the channel. When external air enters the air inlet 17, the wind speed increases as the channel gradually narrows. Since the narrow air outlet 74 is close to the high-brightness lamp panel 31 on the lamp holder 3, it is convenient to use the airflow flowing through the narrow air outlet 74 to dissipate heat from the high-brightness lamp panel 31, thereby improving the service life of the high-brightness lamp panel 31.

[0068] As another embodiment of the present invention, a heat dissipation plate consisting of a short plate 71 and a long plate 7 is symmetrically hinged. When the two lamp holders 3 are in a "V" shape, the short plate 71 is attached to the high-brightness lamp plate 31, and when the two lamp holders 3 are in a "∧" shape, the lamp holders 3 push the heat dissipation plate so that the long plate 7 is attached to the low-brightness lamp plate 33 and the medium-brightness lamp plate 32.

[0069] Specifically, when the two lamp holders 3 are in a "V" shape, the short plate 71 on the heat sink is attached to the high-brightness lamp plate 31, thereby transferring the heat from the high-brightness lamp plate 31 to the short plate 71 and gradually to the long plate 7. At this time, the heat sink is used to dissipate heat from the high-brightness lamp plate 31, thereby improving the heat dissipation effect of the high-brightness lamp plate 31. When the two lamp holders 3 switch from a "V" shape to a "∧" shape, the upward movement of the lamp holders 3 pushes the heat sink plate upward as well. When the two lamp holders 3 are in the "∧" shape, the long plate 7 on the heat sink plate is respectively attached to the low-brightness lamp plate 33 and the medium-brightness lamp plate 32, while the short plate 71 is detached from the high-brightness lamp plate 31 due to the upward movement of the heat sink plate. At this time, when the two lamp holders 3 are in the "∧" shape, the high-brightness lamp plate 31 is off, while the low-brightness lamp plate 33 and the medium-brightness lamp plate 32 still provide illumination and generate heat. This allows the heat from the low-brightness lamp plate 33 and the medium-brightness lamp plate 32 to be transferred to the long plate 7 and gradually to the short plate 71. At this time, the heat sink plate is used again to dissipate heat from the low-brightness lamp plate 33 and the medium-brightness lamp plate 32. The heat sink plate can achieve the same effect on the high-brightness lamp plate 31 and the low-brightness lamp plate 32 as the state of the two lamp holders 3 switches. The heat dissipation is achieved by switching between the high-brightness light board 31 and the medium-brightness light board 32, thereby effectively utilizing the heat dissipation plate to extend the service life of the high-brightness light board 31, the low-brightness light board 33, and the medium-brightness light board 32. Compared to a single heat dissipation component that simultaneously acts on the high-brightness light board 31, the heat dissipation plate only dissipates heat from the high-brightness light board 31 when it is in use, avoiding the impact of heat from the low-brightness light board 33 and the medium-brightness light board 32 on the heat dissipation of the high-brightness light board 31, thus improving the heat dissipation effect. When the high-brightness light board 31 does not need to dissipate heat, the heat dissipation plate is switched to the low-brightness light board 33 and the medium-brightness light board 32 to fully utilize the heat dissipation plate, thereby achieving a better heat dissipation effect without the need for expensive heat dissipation components such as complex heat dissipation fins.

[0070] As another embodiment of the present invention, the elastic plate 73 is movable on the heat dissipation plate, and the air guide 72 and air inlet 17 opened on the short plate 71 when the two lamp holders 3 are in the shape of "∧" are connected.

[0071] Specifically, such as Figure 14 As shown, when the two lamp holders 3 are in a "V" shape, the end of the elastic plate 73 is attached to the short plate 71. The elasticity of the elastic plate 73 then presses against the short plate 71, making the short plate 71 fit more tightly against the high-brightness lamp panel 31 for heat dissipation. Simultaneously, because the end of the elastic plate 73 is attached to the short plate 71, the narrow air vent 74 faces the short plate 71. Therefore, when there is airflow in the air inlet 17, air is blown onto the short plate 71 through the narrow air vent 74 to dissipate heat. At the same time, as... Figure 12 and Figure 14As shown, the top of the lampshade 11 is provided with a heat dissipation port 14 that connects to the storage cavity 12. When the short plate 71 is attached to the high-brightness lamp plate 31, the long plate 7 is kept in a downward tilted state. After the short plate 71 is cooled by blowing air through the narrow air vent 74, the airflow can flow under the guidance of the tilted state of the long plate 7. The blowing air is then used to cool the long plate 7 as well. Under the guidance of the long plate 7, the blowing air is better directed to the heat dissipation port 14 for rapid discharge, which accelerates the flow of air in the storage cavity 12 and improves the overall heat dissipation effect of the heat sink.

[0072] Then, when the two lamp holders 3 switch from a "V" shape to a "∧" shape, the high-brightness lamp panel 31 turns off. At the same time, a heat sink is placed on the lamp holder 3 and the long plate 7 on the heat sink is attached to the low-brightness lamp panel 33 and the medium-brightness lamp panel 32. At this time, as Figure 15 As shown, the elastic plate 73 is pushed and deformed, and is used to keep the short plate 71 pressed down, so that the long plate 7 fits more tightly against the low-brightness light plate 33 and the medium-brightness light plate 32. The narrow air vent 74 is blocked, and the air guide vent 72 is exposed. The exposed air guide vent 72 allows the airflow along the air inlet 17 to directly dissipate heat on the surface of the long plate 7, thereby achieving more effective heat dissipation for the long plate 7. By switching between the narrow air vent 74 and the air guide vent 72, airflow heat dissipation is achieved at different positions of the short plate 71 and the long plate 7, so as to achieve the most direct and better heat dissipation for the long plate 7 or the short plate 71 at the contact position of the heat dissipation plate of the low-brightness light plate 33, the medium-brightness light plate 32 and the high-brightness light plate 31.

[0073] As another embodiment of the present invention, it includes a mounting block 15, and the mounting block 15 is symmetrically provided with reflective walls 19 on opposite sides of the outer wall. The elastic reflector 6 symmetrically and movably arranged inside the mounting block 15 extends out of the bottom of the mounting block 15 when the two lamp holders 3 are in the "∧" position.

[0074] Specifically, the top of the elastic reflector 6 is fixed to the mounting block 15 with screws, and the elastic reflector 6 is movably set in the guide groove 16 opened on the mounting block 15. The cleaning cotton pad 2 fixed to the mounting block 15 with glue is attached to the reflective surface of the elastic reflector 6.

[0075] Two light fixtures 3 are each fixedly mounted with a sponge pad 35 at one adjacent end, and the sponge pad 35 is glued to the light fixture 3. The sponge pad 35 moves along the reflector wall 19, which is coated with a reflective coating, such as a reflective metallic coating. The elastic reflector 6 is a smooth, elastic stainless steel plate. The cleaning pad 2 can clean the reflective surface of the moving elastic reflector 6, while the sponge pad 35 can move with the light fixture 3 to scrape and clean the reflector wall 19.

[0076] Furthermore, when the two lamp holders 3 are in a "V" shape, the sponge pads 35 on the two lamp holders 3 are respectively attached to the reflector wall 19. At this time, the mounting block 15 and the two lamp holders 3 and their low-brightness lamp panels 33, medium-brightness lamp panels 32 and high-brightness lamp panels 31 relatively block and seal the bottom opening of the storage cavity 12. At this time, when the low-brightness lamp panel 33, medium-brightness lamp panel 32 and high-brightness lamp panel 31 emit light and dissipate heat, the hot air in the storage cavity 12 will flow upward and be discharged along the heat exhaust port 14. When the hot air in the storage cavity 12 is discharged, the outside air enters the storage cavity 12 through the air inlet 17 and the narrow air outlet 74. When the outside air enters the storage cavity 12, the blower air flowing out of the narrow air outlet 74 will dissipate heat on the short board 71, thereby improving the heat dissipation effect on the short board 71.

[0077] Then, when the two light fixtures 3 switch from a "V" shape to a "∧" shape, the two diffused light panels 34 simultaneously flip and swing downwards to block the light emanating outwards from the low-brightness light panel 33 and the medium-brightness light panel 32. Simultaneously, the bottom end of the elastic reflector 6 extends outwards from the bottom of the mounting block 15, and the reflective surface and reflective wall 19 of the elastic reflector 6 face the low-brightness light panel 33 and the medium-brightness light panel 32, respectively. At this time, the light emanating from the low-brightness light panel 33 and the medium-brightness light panel 32 is refracted through the reflective surface and reflective wall 19 of the elastic reflector 6. Figure 16 As indicated by the arrows and dashed lines representing light rays and refracted rays, the refracted rays are less bright than the light source and increase the illumination area of ​​the streetlight. Simultaneously, the refracted rays are blocked by the diffuser panel 34 and tilted downwards, thus minimizing the impact of the refracted rays on residents and expanding the scattering area. This provides a diffused, weak light to the surrounding environment at night, offering a basic and adequate visible light for pedestrians. This allows for dimming and better applicability of the streetlights at night without needing to adjust the power of the low-brightness panel 33 or the medium-brightness panel 32, or using LEDs with PWM pulse width modulation. This ensures a certain level of basic luminous radiation on the road surface and reduces the impact of light on the sleep of nearby residents.

[0078] As a further preferred embodiment of the present invention, when the two lamp holders 3 switch from a “V” shape to a “∧” shape, their ends respectively push against the protrusions 61 provided on the elastic reflector 6. The protrusions 61 deform to drive the bottom end of the elastic reflector 6 to extend out of the bottom of the mounting block 15.

[0079] Specifically, the elastic reflector 6 is located on the swing path of the lamp holder 3. When the two lamp holders 3 switch from a "V" shape to a "∧" shape, the adjacent ends of the two lamp holders 3 respectively squeeze the protrusion 61. Since the top of the elastic reflector 6 is fixedly installed on the mounting block 15, the protrusion 61 that is squeezed and deformed will drive the bottom end of the elastic reflector 6 to extend out of the bottom of the mounting block 15. Thus, when the lamp holder 3 is in the "∧" shape, the low-brightness lamp plate 33 and the medium-brightness lamp plate 32 on it can irradiate and refract the reflective surface of the elastic reflector 6 that extends out of the bottom of the mounting block 15.

[0080] Furthermore, when the two light holders 3 switch from a "∧" shape to a "V" shape, the protrusion 61 restores its deformation to drive the elastic reflector 6 to retract back into the mounting block 15. The swing of the two light holders 3 is then used to control the deformation of the elastic reflector 6, so that the elastic reflector 6 can be exposed for reflection when needed and stored away when not needed to reduce dust accumulation on its reflective surface and its impact on the refraction effect.

[0081] Working principle: When the time is between 6 PM and 10 PM, the low-brightness lamp panel 33, medium-brightness lamp panel 32, and high-brightness lamp panel 31 are energized to emit light. Then, the main electric push rod 4 pushes the positioning block 44 to move, cooperating with the two pulling parts 39 to pull the hanging plate 37, and causing the two lamp holders 3 to rotate. At this time, the two lamp holders 3 switch from a "∧" shape to a "V" shape to expand the illumination area of ​​the low-brightness lamp panel 33, medium-brightness lamp panel 32, and high-brightness lamp panel 31. At the same time, the short plate 71 is attached to the high-brightness lamp panel 31 to dissipate heat. In addition, the clamping plate 5 pushes the last tooth of the toothed rack 47 to prevent the positioning block 44 from resetting after the main electric push rod 4 stops supplying power.

[0082] When the time reaches 10 o'clock, the high-brightness light panel 31 is turned off by cutting off the power, and the main electric push rod 4 is powered on again to continue to push the positioning block 44 to move. The positioning block 44 pushes the extension rod 55 and causes the lever 53 to compress the slide cavity 56. Then, the main electric push rod 4 retracts to its original position. At this time, the single vent valve 57 is closed, and the air in the functional cavity 18 can only slowly enter the sliding cavity 56 through the fine pores 58, so that the clamping plate 5 slowly resets. At this time, the retraction of the main electric push rod 4 can prevent the clamping plate 5 from blocking the reset of the positioning block 44. When the two lamp holders 3 switch from the "V" shape to the "∧" shape, the lamp holder 3 swings up to push the heat dissipation plate and makes the long plate 7 on the heat dissipation plate fit against the low-brightness lamp plate 33 and the medium-brightness lamp plate 32 to dissipate heat. At the same time, the lamp holder 3 squeezes the protrusion 61 to deform and makes the bottom end of the elastic reflector 6 extend out of the bottom of the mounting block 15. At this time, the low-brightness lamp plate 33 and the medium-brightness lamp plate 32 can irradiate and refract the reflective surface of the elastic reflector 6 extending out of the bottom of the mounting block 15. The two diffused light transparent plates 34 are flipped down and moved closer to block the light, thereby narrowing the illumination range of the light and minimizing the impact of the light on residents, so as to improve the overall applicability of the light.

[0083] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An energy-saving dimming LED street light, characterized in that, The lamp holder (3) is symmetrically hinged and has a low-brightness lamp plate (33), a medium-brightness lamp plate (32) and a high-brightness lamp plate (31) installed on each of the two lamp holders (3) in sequence from one side to the other. The two lamp holders (3) are driven to flip and switch between two distribution states: "V" shape and "∧" shape. When switching to the "∧" shape, the high-brightness lamp panel (31) is turned off. It also includes a rotatable diffused light plate (34), which is located below the lamp holder (3) when switched to the "∧" shape; The diffused light plate (34) weakens the ambient light intensity of the low-brightness light plate (33) and medium-brightness light plate (32) on the lamp holder (3) to a certain extent.

2. The energy-saving dimming LED street light according to claim 1, characterized in that, The diffused light-transmitting plates (34) are two in number and are fixedly installed on the lamp holder (3). The distance between the ends of the two diffused light-transmitting plates (34) is adjustable when switching between the "V" shape and the "∧" shape distribution states.

3. The energy-saving dimming LED street light according to claim 1, characterized in that, A hanging plate (37) is fixedly installed on the outer wall of the hinge shaft (36) provided on the lamp holder (3), and a lamp cover (11) is arranged on the lamp holder (3). A main electric push rod (4) fixedly installed inside the lamp cover (11) and a pulling member (39) for deflecting the hinge shaft (36) are fixedly connected between the two hanging plates (37).

4. The energy-saving dimming LED street light according to claim 3, characterized in that, The pulling member (39) is fixedly installed on the positioning block (44) at the output end of the main electric push rod (4), and the card plate (5) hinged inside the lamp cover (11) is movably installed in the toothed rack (47) on the positioning block (44).

5. An energy-saving dimming LED street light according to claim 4, characterized in that, A lever (53) is slidably disposed in the sliding cavity (56) on the lampshade (11) and is movably connected to the card plate (5). The lampshade (11) is provided with a single air valve (57) and a fine pore (58) respectively connected to the sliding cavity (56). After the positioning block (44) pushes the lever (53) to reset, the single air valve (57) closes and the card plate (5) disengages from the toothed rack (47).

6. The energy-saving dimming LED street light according to claim 3, characterized in that, The lampshade (11) has air inlets (17) on the opposite outer walls on both sides, located on one side of the lamp holder (3). The lampshade (11) has elastic plates (73) that are symmetrically fixed inside, tilted inward to block the air inlets (17), and a narrow air inlet (74) is provided on the elastic plate (73) near the lamp holder (3).

7. The energy-saving dimming LED street light according to claim 1, characterized in that, The heat dissipation plate consists of a short plate (71) and a long plate (7) arranged in a symmetrical hinge configuration. When the two lamp holders (3) are in a "V" shape, the short plate (71) is attached to the high-brightness lamp plate (31), and when the two lamp holders (3) are in a "∧" shape, the lamp holders (3) push the heat dissipation plate so that the long plate (7) is attached to the low-brightness lamp plate (33) and the medium-brightness lamp plate (32).

8. An energy-saving dimming LED street light according to claim 6, characterized in that, The elastic plate (73) is movable on the heat dissipation plate, and the air duct (72) and air inlet (17) opened on the short plate (71) of the two lamp holders (3) in the "∧" shape are connected.

9. An energy-saving dimming LED street light according to claim 1, characterized in that, Includes a mounting block (15), and the mounting block (15) is symmetrically provided with reflective walls (19) on both sides of the outer wall. The elastic reflector (6) symmetrically and movably arranged inside the mounting block (15) extends out of the bottom of the mounting block (15) when the two lamp holders (3) are in the "∧" position.

10. An energy-saving dimming LED street light according to claim 1, characterized in that, When the two lamp holders (3) switch from "V" shape to "∧" shape, their ends respectively push the protrusions (61) provided on the elastic reflector (6), and the protrusions (61) deform to drive the bottom end of the elastic reflector (6) to extend out of the bottom of the mounting block (15).

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