LED lamp active heat dissipation device with intelligent air guide structure

Abstract

The invention relates to the technical field of lighting equipment, and discloses an LED lamp active heat dissipation device with an intelligent air guide structure, a lamp shell, an LED chip and a power pack, a plurality of vent holes are formed in the outer wall of the lamp shell, an air window assembly is installed in the lamp shell and used for opening the vent holes along with temperature rise, a sterilization assembly is installed on the outer side of the lamp shell, and the LED chip is installed on the lamp shell. The lamp shell is used for optimizing the surrounding environment of the lamp, and an auxiliary heat dissipation assembly is installed in the middle of the lamp shell. The air window assembly comprises a supporting block, the supporting block is fixedly connected to the inner wall of the lamp shell, a thermal expansion metal sheet is fixedly connected to the outer side of the supporting block, and a sliding rod is installed on the outer side of the thermal expansion metal sheet. When the temperature in the lamp reaches 60-65 DEG C through the temperature control switch, the thermistor trigger circuit in the lamp starts the cooling fan, the air window starts to be opened at the same time, air flowing can be rapidly improved under the assistance of the cooling fan, and therefore the cooling effect is further improved.

Description

Technical Field

[0001] This invention relates to the field of lighting equipment technology, specifically to an active heat dissipation device for LED lamps with an intelligent airflow structure. Background Technology

[0002] High-power LED lighting devices, such as industrial and mining lamps, floodlights, streetlights, and wall washer lights, are widely used due to their high luminous efficacy and long lifespan. However, the core LED chip generates a significant amount of heat during operation, making heat dissipation crucial for ensuring stable performance and extending the lifespan of the lighting fixture. Currently, the most mainstream heat dissipation method in the industry is a passive cooling structure. This involves using a high thermal conductivity metal housing and integrated heat sink fins to conduct the heat generated by the LED chip to the surface of the lamp, which is then dissipated into the surrounding environment via natural air convection.

[0003] However, this traditional passive cooling method has its inherent limitations. In some enclosed or semi-enclosed environments, where the lighting fixtures are installed in poorly ventilated locations, or in hot climates, the surrounding air circulation is poor, and the efficiency of natural convection cooling is significantly reduced. This can cause heat to accumulate inside the lighting fixture, resulting in excessively high junction temperatures for the LED chips, which in turn leads to accelerated light decay, a significantly shortened lifespan, and even serious problems such as burnout and failure due to overheating.

[0004] To address the aforementioned issues, existing technologies primarily focus on two aspects of improvement. One approach is to strengthen the passive cooling structure, such as by significantly increasing the number and area of ​​heat sink fins or employing components with higher thermal conductivity, such as heat pipes. However, this method significantly increases the manufacturing cost, size, and overall weight of the luminaire, while offering limited improvement in heat dissipation, ultimately remaining dependent on external wind conditions. Another approach is to introduce fans into the luminaire for forced air cooling. However, most existing active cooling solutions operate at a constant fan speed, unable to dynamically adjust according to the luminaire's real-time operating temperature. This not only results in unnecessary energy consumption and operating noise but also increases the complexity of the control system, failing to achieve truly intelligent thermal management.

[0005] In summary, there is a lack of an active heat dissipation solution in the existing technology that can intelligently respond to temperature changes, has a simple structure, low cost, and extremely low energy consumption. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an active heat dissipation device for LED lamps with an intelligent airflow structure, solving the problem of a lack of active heat dissipation solutions that are intelligently responsive to temperature changes, simple in structure, low in cost, and have extremely low energy consumption.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an active heat dissipation device for LED lamps with an intelligent airflow structure, comprising: The lamp housing, LED chip, and power supply unit are provided. The outer wall of the lamp housing has multiple ventilation holes. The inside of the lamp housing is equipped with a wind window assembly to open the ventilation holes as the temperature rises. The outside of the lamp housing is equipped with a disinfection assembly to optimize the environment around the lamp. The middle of the lamp housing is equipped with an auxiliary heat dissipation assembly. The windshield assembly includes a support block, which is fixedly connected to the inner wall of the lamp housing. A thermally expanding metal sheet is fixedly connected to the outer side of the support block. A sliding rod is installed on the outer side of the thermally expanding metal sheet. A reset assembly is installed in the middle of the sliding rod. A connecting plate is fixedly connected to the outer periphery of the sliding rod. A baffle is fixedly connected to the end of the connecting plate. The baffle is in contact with the inner wall of the lamp housing.

[0008] Preferably, the reset assembly includes a round rod, which is fixedly connected to the inner wall of the lamp housing on the side away from the support block. A sliding rod is slidably connected to the outer periphery of the round rod. A sliding groove is provided in the middle of the sliding rod, and the round rod is slidably connected to the middle of the sliding groove. A blocking block is fixedly connected to the outer periphery of the sliding rod, and a compression spring is sleeved on the outer periphery of the round rod.

[0009] Preferably, the auxiliary heat dissipation component includes a cooling fan and a temperature control switch, wherein the cooling fan is fixedly connected inside the lamp housing, and the temperature control switch is installed on the inner wall of the lamp housing.

[0010] Preferably, the disinfection component includes a housing and a fragrance box. The housing is fixedly connected to the outside of the lamp housing, and the fragrance box is slidably connected to the middle of the housing. A limiting groove is formed in the middle of the housing, and a limiting block is fixedly connected to the outside of the fragrance box. The limiting block is slidably connected to the middle of the limiting groove.

[0011] Preferably, a second magnetic block is fixedly connected to the inner wall of the outer shell, and a first magnetic block is fixedly connected to the end of the fragrance box, with the second magnetic block in contact with the first magnetic block.

[0012] Preferably, a heat dissipation fin is installed at the bottom of the lamp housing, a circulation pipe is installed in the middle of the lamp housing, and the corner of the circulation pipe is located on the outside of the lamp housing.

[0013] Preferably, the lamp housing is made of aluminum alloy with high thermal conductivity.

[0014] Preferably, a filter screen is installed in the middle of the ventilation hole.

[0015] Preferably, a protrusion is provided at the bottom of the lamp housing, and the protrusion is located in the gap of the heat dissipation fins.

[0016] Preferably, a wind speed sensor is installed on the inner wall of the ventilation hole, and a piezoelectric ceramic vibrating plate is installed in the middle of the filter screen.

[0017] This invention provides an active heat dissipation device for LED lamps with an intelligent airflow structure. It has the following beneficial effects: 1. This invention utilizes the temperature rise of the LED inside the lamp during operation to cause the thermally expanding metal sheet to bend and deform. This causes the sliding rod to move the baffle away from blocking the ventilation hole, forming a chimney effect path to guide the hot airflow to be discharged quickly. When the temperature reaches 70℃-80℃, the thermally expanding metal sheet bends completely, thereby causing the baffle to move completely away, maximizing ventilation efficiency and quickly dissipating heat. When the temperature drops to 50℃-60℃, the reset component pushes the baffle back to close the ventilation hole, thereby preventing moisture and dust from entering the lamp and ensuring the lamp's service life.

[0018] 2. This invention uses a temperature control switch to activate the cooling fan when the temperature inside the lamp reaches 60℃-65℃. At the same time, the vents open, and with the assistance of the cooling fan, the airflow speed can be quickly increased, thereby further improving the heat dissipation effect.

[0019] 3. The present invention has an outer shell installed on the outside of the lamp housing, which allows the fragrance box to be quickly inserted. The fragrance and disinfection molecules emitted by the fragrance box optimize the environment. At the same time, as the temperature of the lamp increases, the diffusion effect of the fragrance and disinfection molecules can be further enhanced. With the air duct and cooling fan turned on, the diffusion effect of the fragrance and disinfection molecules is maximized.

[0020] 4. This invention optimizes the micro airflow of passive heat dissipation by installing protrusions in the gaps between the heat dissipation fins at the bottom of the lamp housing. These protrusions can actively disrupt the stable thermal boundary layer attached to the surface of the fins, induce air turbulence, thereby significantly enhancing the mixing and exchange efficiency of hot and cold air, improving the convective heat transfer coefficient, and effectively improving the overall heat dissipation performance of the lamp with minimal structural cost.

[0021] 5. This invention employs an intelligent self-cleaning function. Through a wind speed sensor and a piezoelectric ceramic vibrating plate, it can automatically monitor and resolve the problem of filter clogging. When the lamp is used for a preset time or when the airflow weakens due to the accumulation of dust, flying insects, etc., the wind speed sensor detects the weakening airflow and automatically triggers high-frequency vibration to clean the filter, ensuring long-term unobstructed airflow. This not only guarantees stable and efficient heat dissipation performance throughout the entire life cycle of the lamp, but also greatly reduces the frequency and cost of subsequent manual maintenance. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention; Figure 2This is a schematic diagram of the cross-sectional structure of the lamp housing of the present invention; Figure 3 This is a schematic diagram of the circulation pipe structure of the present invention; Figure 4 This is a schematic diagram of the windshield assembly structure of the present invention; Figure 5 This is a schematic diagram of the reset component structure of the present invention; Figure 6 This is a schematic diagram of the disinfection component structure of the present invention; Figure 7 This is a schematic diagram of the fragrance box structure of the present invention; Figure 8 This is a schematic diagram of the outer shell structure of the present invention; Figure 9 This is a schematic diagram of the ventilation hole structure of the present invention.

[0023] The components include: 1. Lamp housing; 2. Filter screen; 3. Circulation pipe; 4. LED chip; 5. Support block; 6. Thermal expansion metal sheet; 7. Sliding rod; 8. Ventilation hole; 9. Cooling fan; 10. Temperature control switch; 11. Connecting plate; 12. Compression spring; 13. Baffle; 14. Heat dissipation fins; 15. Resistance block; 16. Round rod; 17. Sliding groove; 18. Outer shell; 19. Fragrance box; 20. Magnetic block one; 21. Limiting block; 22. Limiting groove; 23. Magnetic block two; 24. Power supply group; 25. Protrusion; 26. Wind speed sensor; 27. Piezoelectric ceramic vibrating plate. Detailed Implementation

[0024] The following is combined with Figure 1 - Appendix Figure 9 The present invention will be further described in detail below.

[0025] This invention provides an active heat dissipation device for LED lamps with an intelligent airflow structure, comprising: The lamp housing 1, LED chip 4 and power supply group 24 are provided. The outer wall of the lamp housing 1 has multiple ventilation holes 8. The lamp housing 1 is equipped with a wind window assembly to open the ventilation holes 8 as the temperature rises. The lamp housing 1 is equipped with a disinfection assembly on the outside to optimize the environment around the lamp. The lamp housing 1 is equipped with an auxiliary heat dissipation assembly in the middle. In one specific embodiment, by combining passive mechanical thermal drive with active electronic heat dissipation and integrating environmental optimization functions, a multi-level, intelligent thermal management effect is achieved. Under normal operating temperature or standby conditions, the ventilation opening 8 is physically sealed by the air vent assembly, effectively preventing external dust, moisture, and water vapor from entering the lamp housing 1. This protects the delicate and environmentally sensitive LED chip 4 and power supply unit 24 from damage, ensuring long-term stable operation and electrical safety of the lamp. When the lamp's internal temperature rises significantly due to prolonged high-power operation, the air vent assembly automatically opens the ventilation opening 8, establishing an efficient air convection channel for rapid heat dissipation. Simultaneously, the disinfection component utilizes the synergistic effect of heat and airflow to provide additional air quality improvement to the illuminated space during lamp operation. The auxiliary heat dissipation component, acting as a second-level heat dissipation guarantee, activates when the air vent assembly is open, working in conjunction with it to achieve a more powerful active heat dissipation effect.

[0026] Please see the appendix Figure 2 - Appendix Figure 4 The windshield assembly includes a support block 5, which is fixedly connected to the inner wall of the lamp housing 1. A thermal expansion metal sheet 6 is fixedly connected to the outer side of the support block 5. A slide rod 7 is installed on the outer side of the thermal expansion metal sheet 6. A reset assembly is installed in the middle of the slide rod 7. A connecting plate 11 is fixedly connected to the outer periphery of the slide rod 7. A baffle 13 is fixedly connected to the end of the connecting plate 11. The baffle 13 contacts the inner wall of the lamp housing 1. A filter screen 2 is installed in the middle of the ventilation hole 8. In one specific embodiment, the windshield assembly forms the passive intelligent air guiding core. Under normal temperature conditions, the baffle 13, under the pre-tightening force of the reset assembly, adheres to the inner wall of the lamp housing 1 and completely seals the ventilation hole 8. As the lamp is started and running, the LED chip 4 generates a large amount of heat. When the internal temperature of the lamp housing 1 gradually rises to a preset threshold of 60°C, the thermally expanding metal sheet 6 installed on the support block 5 deforms due to the heat. This metal sheet is composed of two metal layers with significantly different coefficients of thermal expansion. After heating, the side with the larger coefficient of expansion elongates more, causing the entire metal sheet to undergo precise and predictable bending deformation towards the side with the smaller coefficient of expansion. The thrust generated by this deformation acts on the slide rod 7, overcoming the resistance of the reset assembly and driving the slide rod 7 to move. The slide rod 7 drives the baffle 13 to move synchronously through the connecting plate 11, causing the baffle 13 to gradually move away from the ventilation hole 8, thereby opening the air duct. This process creates a chimney effect path, where hot air inside the lamp, due to its lower density, naturally rises and exits through the sequential ventilation holes 8. Simultaneously, cooler external air enters through the ventilation hole 8 on the other side, forming continuous natural convection and guiding the hot airflow out rapidly. When the temperature continues to rise, for example, reaching 70℃-80℃, the thermally expanded metal sheet 6 reaches its maximum bending degree, thereby causing the baffle 13 to completely move away from the ventilation hole 8, maximizing the airflow area and achieving the most efficient ventilation and heat dissipation. Conversely, when the lamp is turned off or the load decreases, and the internal temperature drops to the safe range of 50℃-60℃, the thermally expanded metal sheet 6 gradually cools and returns to its original shape, reducing its deformation thrust. At this time, the elastic potential energy stored in the reset assembly is released, pushing the slide rod 7 to move in the opposite direction, thereby causing the baffle 13 to reset and close the ventilation hole 8 again. This process is entirely driven by physical laws, requiring no additional power supply or control, achieving a low-cost, high-reliability intelligent switching function. Meanwhile, the filter screen 2 installed at the ventilation hole 8 can effectively prevent larger debris such as flying insects and willow catkins from entering the lamp housing 1 when the air duct is open, thus protecting the internal structure.

[0027] Please see the appendix Figure 5 The reset assembly includes a round rod 16, which is fixedly connected to the inner wall of the lamp housing 1 on the side away from the support block 5. A slide rod 7 is slidably connected to the outer periphery of the round rod 16. A slide groove 17 is provided in the middle of the slide rod 7. The round rod 16 is slidably connected to the middle of the slide groove 17. A stop block 15 is fixedly connected to the outer periphery of the slide rod 7. A compression spring 12 is sleeved on the outer periphery of the round rod 16. In one specific embodiment, the reset assembly ensures the accuracy and recoverability of the windshield assembly's movement. The round rod 16, acting as a fixed guide rail, provides a stable sliding path for the slide rod 7. The cooperation between the slide groove 17 and the round rod 16 further ensures that the slide rod 7 will not deflect or jam during reciprocating motion. The compression spring 12 is pre-compressed and mounted on the round rod 16, with one end abutting against a fixed point on the inner wall of the lamp housing 1 and the other end abutting against the stop block 15 on the slide rod 7. In the initial state, the elastic force of the compression spring 12 pushes the slide rod 7 to its limit position, ensuring that the baffle 13 seals the ventilation hole 8. When the thrust generated by the thermal deformation of the thermally expanded metal sheet 6 exceeds the preload of the compression spring 12, the slide rod 7 begins to be pushed, further compressing the compression spring 12 and storing mechanical energy in the form of elastic potential energy. When the temperature decreases, the thrust of the thermally expanded metal sheet 6 weakens and becomes less than the reaction force of the compression spring 12. The compression spring 12 releases the stored energy, pushing the stop block 15, thereby causing the slide rod 7 to smoothly reset. By precisely selecting the stiffness coefficient and preload of the compression spring 12, the temperature threshold for opening and closing the windshield can be accurately set, achieving a perfect match with the performance of the thermal expansion metal sheet 6.

[0028] Please see the appendix Figure 2 - Appendix Figure 3 The auxiliary heat dissipation components include a cooling fan 9 and a temperature control switch 10. The cooling fan 9 is fixedly connected inside the lamp housing 1, and the temperature control switch 10 is installed on the inner wall of the lamp housing 1. In one specific embodiment, when the lamp is in an extreme high-temperature environment or operates continuously at full load, and natural convection alone cannot effectively control the temperature, forced air cooling is provided through an auxiliary heat dissipation component. A temperature control switch 10 is strategically installed on the inner wall of the lamp housing 1. It integrates a high-precision thermistor or bimetallic contact. When the internal temperature of the lamp housing 1 reaches a threshold of 60℃-65℃, the circuit inside the temperature control switch 10 is triggered, connecting the power supply group 24 to power the cooling fan 9. The cooling fan 9 then rotates at high speed, forcibly drawing cool air from outside the lamp into the lamp housing 1 through the ventilation holes 8. The air flows over the heated LED chip 4, the power supply group 24, and the inner surface of the lamp housing 1, efficiently removing heat through forced convection, and quickly expelling the hot air from the ventilation holes 8 on the other side. This structure achieves coordinated operation; the fan only starts when necessary, avoiding unnecessary energy consumption and noise, while also ensuring forced ventilation when the air duct is open, greatly improving the airflow speed and heat exchange efficiency, thereby further enhancing the heat dissipation effect.

[0029] Please see the appendix Figure 6 - Appendix Figure 8The disinfection component includes a housing 18 and a fragrance box 19. The housing 18 is fixedly connected to the outside of the lamp housing 1, and the fragrance box 19 is slidably connected to the middle of the housing 18. A limiting groove 22 is opened in the middle of the housing 18. A limiting block 21 is fixedly connected to the outside of the fragrance box 19. The limiting block 21 is slidably connected to the middle of the limiting groove 22. A magnetic block 23 is fixedly connected to the inner wall of the housing 18. A magnetic block 20 is fixedly connected to the end of the fragrance box 19. The magnetic block 23 is in contact with the magnetic block 20. In one specific embodiment, the disinfection component adds an environmental optimization function to the lamp. Users can easily replace or refill the fragrance box 19 with fragrance, disinfectant, or mosquito repellent ingredients. During installation, align the limiting block 21 on the side of the fragrance box 19 with the limiting groove 22 on the outer shell 18 and smoothly push it in. This guide rail design ensures convenient and accurate installation. When the fragrance box 19 is pushed into place, the magnetic block 20 at its end attracts the magnetic block 23 on the inner wall of the outer shell 18, producing a soft click and providing a clear sense of positioning. Simultaneously, the strong magnetic force ensures that the fragrance box 19 will not loosen or fall off during long-term use and vibration. More importantly, the disinfection component and the lamp's heat dissipation system form a clever linkage. The heat generated when the lamp is working is conducted to the outer shell 18, gently heating the fragrance box 19, which significantly increases the evaporation rate of the fragrance or disinfectant molecules inside. When the cooling fan 9 is activated, the generated airflow actively blows these volatile molecules into the surrounding environment, greatly expanding the diffusion range and efficiency, thus maximizing the effect of improving air quality.

[0030] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 6 The lamp housing 1 is made of high thermal conductivity aluminum alloy. A heat dissipation fin 14 is installed at the bottom of the lamp housing 1. A circulation pipe 3 is installed in the middle of the lamp housing 1. The corner of the circulation pipe 3 is located on the outside of the lamp housing 1. In one specific embodiment, the lamp housing 1, made of high thermal conductivity aluminum alloy, can improve heat conduction, giving the lamp housing 1 itself a good heat dissipation effect. At the same time, the heat dissipation effect is further improved by the heat dissipation fins 14. Furthermore, the cooling water inside the circulation pipe 3 can absorb the heat inside the lamp housing 1, thereby slowing down the rate of temperature rise inside the lamp housing 1. Since the corner of the circulation pipe 3 is located on the outside of the lamp housing 1, the cooling water can exchange heat with the ambient temperature when it gets too hot. Moreover, the cooling fan 9 can quickly expel the heat absorbed by the cooling water.

[0031] Please see the appendix Figure 6 The bottom of the lamp housing 1 is provided with a protrusion 25, which is located in the gap of the heat dissipation fins 14; In one specific embodiment, when air flows over the smooth surface of the heat dissipation fins 14, a thermal boundary layer is formed. This layer of air flows slowly and has low heat transfer efficiency, which hinders the full heat exchange between the heat dissipation fins 14 and the outside air. The protrusions 25 located at the gaps between the heat dissipation fins 14 can actively disrupt this stable boundary layer. The protrusions 25 will cause the flowing air to generate small vortices and turbulence. This disturbance allows cooler outside air to come into contact with the fin surface, thereby increasing the convective heat transfer coefficient and improving the heat dissipation effect.

[0032] Please see the appendix Figure 8 A wind speed sensor 26 is installed on the inner wall of the ventilation hole 8, and a piezoelectric ceramic vibrating plate 27 is installed in the middle of the filter screen 2. In one specific embodiment, intelligent self-cleaning prevents clogging of the filter 2 after prolonged use. When the pores of the filter 2 are clogged with dust, dead insects, and other contaminants, ventilation efficiency is severely affected, thus jeopardizing heat dissipation. To address this, the system incorporates two monitoring mechanisms: an internal timer that automatically initiates the cleaning process after the lamp has accumulated 500 hours of operation; and a wind speed sensor 26 installed on the inner wall of the ventilation hole 8 for real-time monitoring. When the cooling fan 9 is running, if the airflow speed detected by the wind speed sensor 26 is significantly lower than normal, the system determines that the filter 2 is clogged. Regardless of the triggering condition, the micro-drive circuit applies a high-frequency alternating voltage to the piezoelectric ceramic vibrating plate 27 fixed at the center of the filter 2. Under the alternating electric field, the piezoelectric ceramic material undergoes high-frequency micro-mechanical expansion and contraction, generating high-frequency vibration. This vibrational energy is directly transmitted to the entire filter 2, causing it to vibrate violently, effectively shaking off dust and contaminants adhering to the mesh and pores, allowing them to detach from the lamp under gravity or airflow. This automated maintenance function ensures that the air duct remains unobstructed, guaranteeing that the luminaire maintains efficient heat dissipation performance throughout its entire lifespan, and reducing the frequency and cost of manual maintenance.

[0033] Working principle: Under normal temperature conditions, the baffle 13 will seal the ventilation hole 8 to prevent dust and moisture from entering the lamp and damaging the LED chip 4 and power supply group 24. When the temperature of the LED inside the lamp rises during operation, the thermal expansion metal sheet 6 on the support block 5 will bend and deform. During the deformation process, the thermal expansion metal sheet 6 will push the slide rod 7. The slide rod 7 will drive the baffle 13 to move through the connecting plate 11 to open the ventilation hole 8, forming a chimney effect path to guide the hot airflow to be discharged quickly. When the temperature reaches a certain height, the bending arc of the thermal expansion metal sheet 6 is maximized, thereby driving the baffle 13 to move completely away, maximizing ventilation efficiency and thus quickly dissipating heat. When the temperature drops, the deformation force of the thermal expansion metal sheet 6 decreases, so that the reset component can push the baffle 13 to reset and seal the ventilation hole 8 through the slide rod 7, preventing dust and moisture from entering the lamp housing 1, thereby ensuring the service life of the lamp.

[0034] This invention sets the trigger temperature of the thermistor inside the temperature control switch 10 to be the same as the deformation temperature of the thermal expansion metal sheet 6. When the temperature inside the lamp housing 1 reaches the deformation condition of the thermal expansion metal sheet 6, the thermistor inside the temperature control switch 10 will trigger the circuit and start the cooling fan 9, thereby increasing the speed at which outside air enters the lamp housing 1 through the ventilation hole 8 and the speed at which heat is discharged from the lamp housing 1, thus improving the heat dissipation effect in high-temperature environments.

[0035] This invention inserts the fragrance box 19 into the outer shell 18. Under the action of the limiting block 21 and the limiting groove 22, the fragrance box 19 can be quickly installed on the outside of the lamp housing 1. At the same time, the mutual attraction of the magnetic block 23 and the magnetic block 20 can improve the stability of the fragrance box 19 after installation. Thus, under the action of the fragrance and disinfection molecules emitted by the fragrance box 19, the air quality can be improved. Furthermore, as the temperature rises during the use of the lamp and the air duct and cooling fan 9 are turned on, the diffusion effect of the fragrance and disinfection molecules is maximized, increasing the range of air quality improvement.

[0036] This invention optimizes the structure of the heat dissipation fins 14 to enhance passive heat dissipation. When air flows over the surface of the traditionally smooth heat dissipation fins 14, a slow-flowing thermal boundary layer is naturally formed. This thermal boundary layer acts as an insulation layer, hindering the full and efficient heat exchange between the surface of the heat dissipation fins 14 and the outside cold air. However, the protrusions 25 located at the bottom of the lamp housing 1 in the gaps between the heat dissipation fins 14 act as turbulence-disrupting elements. When the natural convection of air passes through, its smooth flow path is actively disrupted, thereby breaking the stable thermal boundary layer and generating tiny vortices and turbulence in the airflow. This controlled disturbance forcibly promotes the contact and mixing of cooler outside air with the hot surface of the heat dissipation fins 14, significantly improving the convective heat transfer coefficient. Ultimately, with extremely low structural cost, this effectively enhances the overall heat dissipation capacity of the lamp.

[0037] This invention, through its intelligent self-cleaning principle, avoids the problem of reduced heat dissipation efficiency caused by dust clogging of the filter 2. It determines the cleaning timing in two ways: first, through a preset timer mode, the cleaning program is automatically initiated after the lamp has accumulated a preset working time; second, through real-time monitoring by a wind speed sensor 26 installed on the inner wall of the ventilation hole 8. When the cooling fan 9 starts, if the sensor detects that the airflow speed is significantly lower than the normal threshold, the system determines that the filter 2 is clogged. Once the cleaning program is triggered, the micro-drive circuit applies a high-frequency alternating voltage to the piezoelectric ceramic vibrating plate 27 installed in the middle of the filter 2. Due to its inverse piezoelectric effect, the piezoelectric ceramic vibrating plate 27 generates rapid and minute mechanical vibrations. This high-frequency vibration is directly transmitted to the entire filter 2, and the vigorous shaking effectively shakes off dust, insects, and other contaminants attached to the mesh of the filter 2, causing them to detach from the lamp under gravity or airflow. This process ensures the continuous unobstructed flow of the heat dissipation airflow, guaranteeing the lamp's efficient heat dissipation performance throughout its entire lifespan and preventing performance degradation or damage due to untimely manual maintenance.

Claims

1. An active heat dissipation device for LED lamps with an intelligent airflow structure, characterized in that, include: The lamp housing (1), LED chip (4) and power supply group (24) are provided. The outer wall of the lamp housing (1) is provided with multiple ventilation holes (8). The lamp housing (1) is equipped with a wind window assembly to open the ventilation holes (8) as the temperature rises. The lamp housing (1) is equipped with a disinfection assembly on the outside to optimize the environment around the lamp. The lamp housing (1) is equipped with an auxiliary heat dissipation assembly in the middle. The windshield assembly includes a support block (5), which is fixedly connected to the inner wall of the lamp housing (1). A thermal expansion metal sheet (6) is fixedly connected to the outer side of the support block (5). A slide rod (7) is installed on the outer side of the thermal expansion metal sheet (6). A reset assembly is installed in the middle of the slide rod (7). A connecting plate (11) is fixedly connected to the outer periphery of the slide rod (7). A baffle (13) is fixedly connected to the end of the connecting plate (11). The baffle (13) is in contact with the inner wall of the lamp housing (1).

2. The LED lamp active heat dissipation device with intelligent airflow structure according to claim 1, characterized in that, The reset assembly includes a round rod (16), which is fixedly connected to the inner wall of the lamp housing (1) on the side away from the support block (5). The slide rod (7) is slidably connected to the outer periphery of the round rod (16). A slide groove (17) is provided in the middle of the slide rod (7). The round rod (16) is slidably connected to the middle of the slide groove (17). A stop block (15) is fixedly connected to the outer periphery of the slide rod (7). A compression spring (12) is sleeved on the outer periphery of the round rod (16).

3. The active heat dissipation device for LED lamps with an intelligent airflow structure according to claim 1, characterized in that, The auxiliary heat dissipation component includes a cooling fan (9) and a temperature control switch (10). The cooling fan (9) is fixedly connected inside the lamp housing (1), and the temperature control switch (10) is installed on the inner wall of the lamp housing (1).

4. The LED lamp active heat dissipation device with intelligent airflow structure according to claim 3, characterized in that, The disinfection component includes a housing (18) and a fragrance box (19). The housing (18) is fixedly connected to the outside of the lamp housing (1). The fragrance box (19) is slidably connected to the middle of the housing (18). A limiting groove (22) is opened in the middle of the housing (18). A limiting block (21) is fixedly connected to the outside of the fragrance box (19). The limiting block (21) is slidably connected to the middle of the limiting groove (22).

5. The LED lamp active heat dissipation device with intelligent airflow structure according to claim 4, characterized in that, The inner wall of the outer shell (18) is fixedly connected to a magnetic block two (23), and the end of the fragrance box (19) is fixedly connected to a magnetic block one (20). The magnetic block two (23) is in contact with the magnetic block one (20).

6. The LED lamp active heat dissipation device with intelligent airflow structure according to claim 1, characterized in that, The lamp housing (1) is equipped with heat dissipation fins (14) at the bottom, and a circulation pipe (3) is installed in the middle of the lamp housing (1). The corner of the circulation pipe (3) is located on the outside of the lamp housing (1).

7. The LED lamp active heat dissipation device with intelligent airflow structure according to claim 1, characterized in that, The lamp housing (1) is made of high thermal conductivity aluminum alloy.

8. The active heat dissipation device for LED lamps with an intelligent airflow structure according to claim 1, characterized in that, A filter screen (2) is installed in the middle of the ventilation hole (8).

9. The LED lamp active heat dissipation device with intelligent airflow structure according to claim 6, characterized in that, The bottom of the lamp housing (1) is provided with a protrusion (25), which is located in the gap of the heat dissipation fins (14).

10. An active heat dissipation device for LED lamps with an intelligent airflow structure according to claim 8, characterized in that, A wind speed sensor (26) is installed on the inner wall of the ventilation hole (8), and a piezoelectric ceramic vibrating plate (27) is installed in the middle of the filter screen (2).

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