LED power supply with temperature control, adjustment, heat dissipation and dust prevention functions

Abstract

The invention discloses a temperature-controlled, adjustable, heat-dissipating and dustproof LED power supply, and relates to the technical field of LED power supplies, a group of opposite side walls of a power supply shell are arranged as heat-dissipating side plates, heat-dissipating holes A in array arrangement are formed in the heat-dissipating side plates, and the inner side surfaces of the heat-dissipating side plates are slidably connected with baffles capable of opening and closing the heat-dissipating holes A; hydraulic rods corresponding to the baffles are arranged in the shell, the driving ends of the hydraulic rods are hinged to the baffles, the hydraulic rods are filled with mineral wax media, and the mineral wax media are configured to be melted into a liquid state at the specified temperature and control the movable ends of the hydraulic rods to drive the baffles to open the heat dissipation holes A; temperature control and heat dissipation adjustment are achieved, and the contradiction between heat dissipation and dust prevention is balanced to a certain degree.

Description

Technical Field

[0001] This invention relates to the field of LED power supply technology, specifically to an LED power supply with temperature control, heat dissipation, and dust prevention. Background Technology

[0002] As a core component of LED lighting systems, the long-term reliability and stability of LED driver power supplies are crucial. The electronic components inside the power supply, especially power devices, generate heat during operation. If this heat cannot be dissipated in time, the component temperature will rise sharply, accelerating aging, light decay, and even causing malfunctions and fires.

[0003] Currently, a common heat dissipation solution involves creating numerous ventilation holes or grilles on the power supply casing to enhance airflow. However, while this "always-on" design offers cooling benefits, it also presents a significant dust problem. Dust, lint, and insects in the air can easily enter the casing through these ventilation holes. Dust covering the PCB board and components can form an insulating layer, actually worsening heat dissipation.

[0004] To address dust control issues, some existing technologies attempt to use temperature-controlled valves or electrically controlled louvers, employing sensors to detect temperature and control motors or solenoid valves to open and close ventilation openings. While these solutions are conceptually advanced, the introduction of electronic control systems significantly increases costs. Many other existing solutions involve adding dust filters or cotton to the inside of the ventilation holes. However, these structures are themselves prone to dust clogging, creating new problems. Some high-end solutions use internal fans with filters or electrically controlled cleaning mechanisms, but the additional motors bring extra power consumption and even additional heat sources, indicating room for improvement in these technologies.

[0005] Therefore, there is an urgent need in this field for an LED power supply heat dissipation and dust prevention technology that can respond to internal temperature, balance heat dissipation and dust prevention requirements, and simultaneously possess high reliability and low cost. Summary of the Invention

[0006] The purpose of this invention is to provide a non-electrically controlled LED power supply that can balance the conflict between heat dissipation and dust prevention to a certain extent.

[0007] The technical solution adopted in this invention is: A temperature-controlled, heat-dissipating, and dust-proof LED power supply includes a housing with a built-in PCB board and wiring. A set of opposing sidewalls of the housing are configured as heat dissipation side plates, which have heat dissipation holes A arranged in an array. A baffle that can open and close the heat dissipation holes A is slidably connected to the inner side of the heat dissipation side plate. Hydraulic rods are respectively arranged inside the housing corresponding to the baffles. The driving end of the hydraulic rod is hinged to the baffle. The hydraulic rod is filled with a mineral wax medium, which is configured to melt into a liquid state at a specified temperature and control the moving end of the hydraulic rod to drive the baffle to open the heat dissipation hole A. A core technical aspect of this invention is that the hydraulic rod is encapsulated with a specially formulated mineral wax medium. This medium is proportioned so that its phase change temperature matches the upper limit of the ideal operating temperature of the LED power supply. When the temperature inside the housing is below a set threshold, the mineral wax remains solid, the hydraulic rod is in a contracted state, and the baffle completely seals the heat dissipation hole A, achieving complete sealing and dust prevention. When the power supply generates heat, causing the internal temperature to rise to the melting point of the mineral wax, the mineral wax melts into a liquid state and expands in volume, driving the piston of the hydraulic rod to extend. The piston pushes the baffle to slide, thereby gradually opening the heat dissipation hole A.

[0008] Preferably, the baffle plate, corresponding to the heat dissipation side plate, is synchronously provided with an array of heat dissipation holes B. The relative positions of the baffle plate and the heat dissipation side plate are configured such that: when the hydraulic rod drive end is in the retracted state, heat dissipation holes A and B are staggered; when the hydraulic rod drive end is in the extended state, heat dissipation holes A and B are aligned and connect the inside of the housing to the outside. As a further optimization of the present invention, the baffle plate is also provided with an array of heat dissipation holes B. The relative positions of the baffle plate and the heat dissipation side plate are precisely configured: when the mineral wax medium inside the hydraulic rod is solid, the drive end is in the retracted state, and heat dissipation holes A and B are completely staggered, forming a seal; when the hydraulic rod is extended and the baffle plate is moved to its maximum stroke, the two sets of heat dissipation holes are completely aligned, forming the maximum heat dissipation channel connecting the inside and outside of the housing.

[0009] Preferably, the heat dissipation side plate is rotatably connected to the housing. When the hydraulic rod drives the baffle to open the heat dissipation hole A, the baffle moves closer to the top of the housing and pushes the heat dissipation side plate to rotate outward relative to the top of the housing, forming an inclined side wall. That is, the housing is wider at the top and narrower at the bottom at this time. As a further optimization of the invention, the inclined heat dissipation side plate can effectively prevent settled dust from adhering to the side wall when the heat dissipation hole A is open, thereby preventing this dust from entering the housing with the airflow. This balances the contradiction between heat dissipation and dust prevention to a certain extent. Although it cannot completely prevent dust from entering through the heat dissipation hole, considering the opening and closing state of the heat dissipation hole and the inclined arrangement of the heat dissipation side wall when open, it can significantly reduce dust entering the housing compared to the traditional normally open technical solution.

[0010] Preferably, the heat dissipation hole A is divided into upper and lower parts along the direction from the top to the bottom of the housing. The axis of the heat dissipation hole A in the upper part is inclined towards the top of the housing, and the axis of the heat dissipation hole A in the lower part is inclined towards the bottom of the housing. As a further optimization of the present invention, the heat dissipation hole A on the heat dissipation side plate is divided into upper and lower groups. The axis of the upper part of the hole is inclined towards the top of the housing, creating a path that facilitates the dissipation and exhaust of hot air. The axis of the lower part of the hole is inclined towards the bottom of the housing, creating a path that can, to some extent, prevent dust from entering with cold air. This improves heat dissipation efficiency while balancing the contradiction between heat dissipation and dust prevention.

[0011] Preferably, torsion spring baffles are provided at the top and bottom of the housing, corresponding to both ends of the heat dissipation side plate. The torsion spring baffles abut against the outer wall of the heat dissipation side plate to maintain the closed state between the tilted rear end of the heat dissipation side plate and the housing. Since the area of ​​the heat dissipation side plate itself remains unchanged, it will lose its sealing state with the housing after rotating at a certain angle. As a further optimization of the present invention, torsion spring baffles are additionally provided to abut against the heat dissipation baffle. When the heat dissipation baffle rotates, the torsion spring baffle that abuts against it rotates accordingly, but it can still maintain a seal between it and the housing. When the heat dissipation side plate returns to its original position, the torsion spring baffle returns to its original position under the action of the torsion spring.

[0012] Preferably, the bottom surface of the housing is provided with a limiting groove corresponding to the lower end of the baffle. When the hydraulic rod is in the retracted state, the lower end of the baffle engages with the limiting groove. As a further optimization of the present invention, the baffle in the engaging state can effectively prevent the heat dissipation side plate from rotating in the non-working state. When the baffle is pushed upward by the hydraulic rod, it disengages from the limiting groove, and then the heat dissipation baffle is driven to rotate.

[0013] Preferably, each end of the slot extends a mounting groove perpendicular to the baffle, and a return spring is provided in the mounting groove. One end of the return spring is hinged to the bottom of the mounting groove, and the other end is fixedly connected to the baffle. As a further optimization of the present invention, when the driving end of the hydraulic rod extends, it drives the baffle to stretch the spring; when the driving end of the hydraulic rod retracts, the spring assists in resetting the baffle.

[0014] Preferably, a filter screen is provided on the side of the baffle near the heat dissipation side plate, and a brush strip is provided on the side of the heat dissipation side plate corresponding to the baffle. The limiting groove is a through groove without a bottom. The brush strip can clean the filter screen when the baffle and the side plate slide relative to each other, and the swept dust is discharged from the housing through the limiting groove. As a further optimization of the present invention, a certain degree of self-cleaning function is also integrated. During the up and down sliding of the baffle, the brush strip will passively scrape the surface of the filter screen, and the removed dust will be discharged from the housing through the through groove, realizing the automation of maintenance.

[0015] Preferably, the baffle is provided with T-shaped grooves on both sides in the horizontal direction, and the heat dissipation side plate is provided with corresponding T-shaped sliding strips.

[0016] Preferably, the LED power supply further includes a photosensor and a multi-channel connector, the photosensor and the multi-channel connector being electrically connected to the PCB board respectively, and the multi-channel connector and the housing end being sealed together via waterproof glue injection.

[0017] The technical solution provided by this invention has the following significant advantages compared with the prior art: 1. To a certain extent, this invention balances the conflict between heat dissipation and dust prevention, changing the traditional design dilemma between "always open for heat dissipation (dust ingress)" and "always closed for dust prevention (overheating)." At low temperatures, it is completely sealed to prevent dust from entering; at high temperatures, it automatically opens and optimizes airflow for efficient heat dissipation. This shift from static compromise to dynamic self-adaptation balances the conflict between heat dissipation and dust prevention.

[0018] 2. The pure mechanical temperature control solution driven by mineral wax phase change eliminates the need for additional electronic components such as electronic sensors, controllers, or external power supplies, reducing costs and eliminating risks such as circuit failure and electromagnetic interference. It is especially suitable for LED power supply applications in harsh conditions such as outdoor, industrial, and tunnel environments, and its lifespan is matched with that of the main power supply unit.

[0019] 3. The tilted design of the heat dissipation side panels and the tilted duct design in the upper and lower sections actively create a chimney effect that facilitates natural convection, allowing hot and cold air to flow in a directional and orderly manner. Compared to ordinary vertical sidewalls with the same opening area, the actual heat dissipation performance of this structure is significantly improved when open.

[0020] 4. It features self-maintenance capabilities. The filter and brush strip design ensures that the filter is cleaned with each temperature control opening and closing process, greatly slowing down the rate of filter clogging. Dust is also more easily discharged from the casing, preventing accumulation inside and reducing the frequency of manual cleaning and maintenance costs.

[0021] 5. The structure is compact and highly integrated. All temperature control, drive, opening and closing, and cleaning functions are highly integrated inside the power supply housing without changing the external installation dimensions and interfaces. This facilitates the upgrading and replacement of existing products, and users do not need to change their usage habits.

[0022] The technical solution of the present invention will be further described in detail below through embodiments. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a side sectional view of the present invention along direction A; Figure 3 It is a display Figure 2 Enlarged schematic diagram of the heat dissipation side plate, baffle and hydraulic rod; Figure 4 This is a top view showing the limiting slot and reset spring parts in this invention; Figure 5 This is a top view showing the sliding connection between the heat dissipation side plate and the baffle in this invention.

[0024] Figure label: 1. Housing; 2. Heat dissipation side plate; 201. Heat dissipation hole A; 202. Brush strip; 203. T-shaped slide bar; 3. Baffle; 301. Heat dissipation hole B; 302. Filter screen; 4. Hydraulic rod; 5. Limiting slot; 6. Torsion spring baffle; 7. Mounting slot; 8. Return spring; 9. Rotating shaft. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the appendix in the embodiments of the present application will be described below. Figure 1-5 This application provides a clear and complete description of the technical solutions in specific embodiments. Unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "comprising" or "including" as used in this invention mean that the element or object preceding the term covers the element or object listed after the term and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. If a structure has a central axis or a hollow chamber, then the "inner side" of the structure refers to the side of the structure closest to the central axis of the structure or located inside the hollow chamber; the "outer side" of the structure refers to the side of the structure away from the central axis of the structure.

[0026] Example 1 This embodiment provides a basic structure for a temperature-controlled, heat-dissipating, and dust-proof LED power supply. The housing 1 is integrally formed from aluminum alloy and has an overall rectangular structure. The housing 1 has a mounting base for mounting a PCB board inside, which is fixed to the bottom plate of the housing 1 by screws. The two opposite sidewalls along the length of the housing 1 are set as heat dissipation side plates 2. The heat dissipation side plates 2 are separately designed from the main body of the housing 1 and are rotatably connected to the main body of the housing 1 by a pivot 9.

[0027] The heat dissipation side plate 2 has a matrix of heat dissipation holes A201. The heat dissipation holes A201 are rectangular strips, spaced apart along the height of the heat dissipation side plate 2. The total area of ​​the heat dissipation holes A201 accounts for 35%-50% of the total area of ​​the heat dissipation side plate 2. The heat dissipation side plate 2 is made of aluminum alloy or stainless steel. A baffle 3 is located inside the heat dissipation side plate 2 and is arranged parallel to it. The baffle 3 is made of aluminum alloy sheet, with T-shaped grooves stamped on its horizontal edges. T-shaped sliding strips 203 are welded to the heat dissipation side plate 2 at positions corresponding to the edges of the baffle 3. The T-shaped sliding strips 203 cooperate with the T-shaped grooves, allowing the baffle 3 to slide freely along the longitudinal direction of the heat dissipation side plate 2. The protrusion height of the T-shaped sliding strips 203 matches the depth of the grooves, with a sliding gap of 0.1-0.3 mm between them. During assembly, the T-shaped groove of the baffle 3 is inserted into the end of the T-shaped slide bar 203 of the heat dissipation side plate 2, so that the T-shaped slide bar 203 is embedded in the T-shaped groove to form a sliding fit. The T-shaped cross-section fit structure not only restricts the baffle 3 from disengaging from the heat dissipation side plate 2 in the normal direction, but also allows the baffle 3 to slide freely along the slide bar direction.

[0028] Hydraulic rod 4 is housed inside housing 1, and its cylinder is fixed to the inner wall of housing 1 via a bracket. The cylinder is filled with a mineral wax medium, filling 60%-80% of its volume. The mineral wax medium is selected from microcrystalline wax or paraffin wax with a phase change temperature of 45-65 degrees Celsius. Its phase change temperature is precisely controlled by adjusting the carbon chain length distribution of the wax to match the upper limit of the ideal operating temperature of the LED power supply. It is worth noting that the technology for precisely controlling the phase change temperature of the mineral wax medium by adjusting the carbon chain length distribution is existing technology with a sufficiently mature research and application history. Mineral wax media with specific phase change temperatures can be directly purchased through commercial channels or obtained through known methods in the corresponding field. Therefore, the instruction manual does not elaborate on the formulation of the mineral wax medium itself.

[0029] One end of the piston rod of hydraulic rod 4 is inserted into the cylinder body and contacts the mineral wax medium, while the other end protrudes from the cylinder body as the drive end. The drive end is connected to baffle 3 by ball joint hinge, and the ball joint hinge seat is fixed in the middle position of baffle 3. When the mineral wax is in a solid state, the piston rod is in the retracted state; when the temperature inside the housing 1 rises to the melting point of the mineral wax, the mineral wax melts and expands in volume, and the pressure generated pushes the piston rod out, thereby causing baffle 3 to slide upward along the T-shaped groove, opening the heat dissipation hole A201.

[0030] Example 2 This embodiment, based on embodiment 1, further defines the mating structure between the heat dissipation hole B301 on the baffle 3 and the heat dissipation hole A201 on the heat dissipation side plate 2. Corresponding to the position of the heat dissipation side plate 2, the baffle 3 has heat dissipation holes B301 arranged in a matrix. The heat dissipation holes B301 are also rectangular strip-shaped holes. Their height and spacing are the same as those of the heat dissipation holes A201. The relative positions of the baffle 3 and the heat dissipation side plate 2 satisfy the following: when the driving end of the hydraulic rod 4 is fully retracted, the heat dissipation holes A201 and B301 are vertically misaligned. At this time, the heat dissipation hole A201 is completely blocked by the solid part of the baffle 3, completely isolating the inside and outside of the housing 1, achieving a sealed dustproof environment. The stroke design of the piston rod of the hydraulic rod 4 is adapted to the diameters of the two heat dissipation holes. That is, when the driving end of the hydraulic rod 4 is fully extended, the baffle 3 slides upward relative to the heat dissipation side plate 2 by this stroke distance, and the heat dissipation holes A201 and B301 are completely aligned and overlapped, forming the largest heat dissipation channel penetrating the inside and outside of the housing 1. By using the misalignment and alignment of these double-layered holes, the heat dissipation channel can be opened gradually. When the hydraulic rod 4 is in a partially extended state, the heat dissipation hole A201 and the heat dissipation hole B301 partially overlap, forming a partially opened heat dissipation channel, thus achieving continuous adjustment of the heat dissipation.

[0031] Example 3 This embodiment, based on Embodiment 1 or Embodiment 2, further defines the rotatable connection structure between the heat dissipation side plate 2 and the housing 1, and the linkage mechanism for the baffle 3 to push the heat dissipation side plate 2 to rotate. The heat dissipation side plate 2 and the main body of the housing 1 are rotatably connected by a rotating shaft 9, which is located at the lower edge or middle of the heat dissipation side plate 2 and extends horizontally along the length of the heat dissipation side plate 2. The rotating shaft 9 is made of stainless steel round rod, with its two ends inserted into the pre-set shaft holes on the end plates at both ends of the housing 1. Copper bushing bearings are provided in the shaft holes to reduce rotational friction. The heat dissipation side plate 2 is fixedly connected to the rotating shaft 9 and can rotate relative to the housing 1 around the rotating shaft 9. To ensure smooth operation, the hinge point between the hydraulic rod 4 and the baffle 3 is located at a position slightly below the middle of the heat dissipation side plate 2. At the same time, the contact surface between the baffle 3 and the top of the heat dissipation side plate 2 can be set as an inclined surface. When the baffle 3 moves upward, under the action of thrust, it will drive the heat dissipation side plate 2 to tilt outward. With the inclined surface, the vertical upward movement of the baffle 3 is converted into a synchronous outward rotation movement of the two more quickly. When the hydraulic rod 4 is fully extended and the baffle 3 moves up to its maximum stroke, the heat dissipation side plate 2 rotates outward by 10-20 degrees relative to the main body of the housing 1, and the housing 1 is in a state of being wider at the top and narrower at the bottom. The inclined heat dissipation side plate 2 can effectively prevent naturally settled dust from adhering and reduce the possibility of dust entering the housing 1 with the airflow.

[0032] To better balance heat dissipation and dust prevention, the heat dissipation holes A201 on the heat dissipation side plate 2 are divided into upper and lower groups along the top to bottom direction of the shell 1. The heat dissipation holes A201 located in the upper part of the heat dissipation side plate 2 have their axes inclined towards the top of the shell 1 relative to the normal direction of the heat dissipation side plate 2, with an inclination angle of 15-30 degrees; the heat dissipation holes A201 located in the lower part of the heat dissipation side plate 2 have their axes inclined towards the bottom of the shell 1 relative to the normal direction of the heat dissipation side plate 2, with an inclination angle of the same 15-30 degrees. The inclined heat dissipation holes A201 are achieved by adjusting the punch angle during the punching process of the heat dissipation side plate 2, or by forming them in one step using laser cutting, EDM, or other methods. The upward inclination of the axis of the upper part of the heat dissipation holes A201 matches the natural upward direction of the hot air inside the shell 1, creating a channel path that facilitates the dissipation and exhaust of hot air, enhancing the chimney effect; the downward inclination of the axis of the lower part of the heat dissipation holes A201 can, to a certain extent, prevent dust from entering with the cold air, improving the dust prevention effect.

[0033] To provide sealing and stability, torsion spring baffles 6 are respectively provided on the top and bottom plates of the housing 1 at both ends corresponding to the heat dissipation side plates 2. The torsion spring baffles 6 are made of stainless steel spring steel plates, with one end hinged to the top or bottom plate of the housing 1 via a torsion spring, and the other end being a free end. The initial preload of the torsion spring ensures that the free end of the torsion spring baffle 6 always maintains elastic contact with the outer wall of the heat dissipation side plate 2. When the heat dissipation side plate 2 is in the initial position flush with the main body of the housing 1, the free end of the torsion spring baffle 6 is in contact with the outer wall of the heat dissipation side plate 2, sealing any gaps that may exist between the heat dissipation side plate 2 and the top and bottom plates of the housing 1. When the heat dissipation side plate 2 rotates outward around the pivot 9, the upper edge of the heat dissipation side plate 2 moves outward. The torsion spring baffle 6 rotates outward under the push of the outer wall of the heat dissipation side plate 2. The torsion spring undergoes torsional deformation to store elastic potential energy. At the same time, the free end of the torsion spring baffle 6 always maintains contact with the outer wall of the heat dissipation side plate 2, continuously sealing the gap between the end of the heat dissipation side plate 2 and the housing 1. This ensures that no dust leakage gap will be generated between the end of the heat dissipation side plate 2 and the housing 1 at any rotation angle. The same applies to the lower end of the heat dissipation side plate 2, only in the opposite direction, which will not be elaborated here. When the temperature inside the housing 1 drops, the mineral wax solidifies, the hydraulic rod 4 retracts, the baffle 3 moves down, and the heat dissipation side plate 2 returns to its initial position, the torsion spring releases its elastic potential energy, driving the torsion spring baffle 6 to automatically reset and continue to maintain a close and sealed state with the outer wall of the heat dissipation side plate 2.

[0034] Meanwhile, the torsion spring baffle 6 also serves to limit the degree of movement, preventing the heat dissipation side plate 2 from accidentally opening outward due to external force or vibration when not in operation. Furthermore, a limiting groove 5 is provided on the inner bottom surface of the housing 1, corresponding to the lower end of the baffle 3. The limiting groove 5 extends horizontally along the width direction of the baffle 3, with the groove width slightly greater than the thickness of the baffle 3. The two side walls of the limiting groove 5 are designed as upwardly expanding slopes, facilitating the automatic insertion of the lower end of the baffle 3 into the groove during the reset process. When the hydraulic rod 4 is in the fully retracted state, the baffle 3 moves down to the lowest position under the combined action of gravity and the reset spring 8, and the lower edge of the baffle 3 is embedded in the limiting groove 5 and engaged with it. In the engaged state, the baffle 3 is constrained by the two side walls of the limiting groove 5 and cannot move horizontally, thereby effectively limiting the rotation of the heat dissipation side plate 2 and preventing the heat dissipation side plate 2 from accidentally opening inward due to external force or vibration when not in operation. When the hydraulic rod 4 extends and the baffle 3 slides upward, the lower edge of the baffle 3 disengages from the limiting slot 5, releasing the rotation constraint on the heat dissipation side plate 2. At this time, the push rod on the upper part of the baffle 3 can push the heat dissipation side plate 2 to rotate outward. This linkage sequence of unlocking before rotation ensures that the rotation of the heat dissipation side plate 2 and the upward movement of the baffle 3 are synchronized and coordinated, avoiding interference between the mechanisms.

[0035] The aforementioned return spring 8 is implemented by the following structure: Both ends of the limiting groove 5 extend into mounting grooves 7 perpendicular to the baffle 3. A return spring 8 is installed within the mounting grooves 7. The return spring 8 is a tension spring. One end of the return spring 8 is hinged to a hook seat at the bottom of the mounting groove 7 via a hook, and the hook seat is welded to the bottom of the mounting groove 7. The other end of the return spring 8 is also hinged to a connecting seat on the baffle 3 via a hook. When the baffle 3 is in its initial position within the limiting groove 5, the return spring 8 is in its natural state or slightly pre-stretched state. When the driving end of the hydraulic rod 4 extends and drives the baffle 3 to slide upwards, the connecting seat on the baffle 3 moves upwards, stretching the return spring 8, which then elongates and stores elastic potential energy. When the temperature inside the housing 1 decreases and the mineral wax solidifies and shrinks, the driving force of the hydraulic rod 4 weakens or disappears. At this time, the return spring 8 releases its elastic potential energy to generate a restoring force, assisting the piston rod of the hydraulic rod 4 to retract, and simultaneously driving the baffle 3 to slide downwards and reset, causing the lower edge of the baffle 3 to re-embed into the limiting groove 5. The reset spring 8 improves the reliability and response speed of the baffle 3 reset.

[0036] Example 4 This embodiment also includes a self-cleaning structure for the filter screen 302 and the brush strip 202. A filter screen 302 is provided on the side of the baffle 3 near the heat dissipation side plate 2. The filter screen 302 is made of stainless steel wire mesh or nylon mesh with a mesh size of 40-80. The filter screen 302 is fixed to the edge of the baffle 3 through its frame. The filter screen 302 covers the entire area of ​​the heat dissipation holes B301 on the baffle 3, used to filter dust and debris from the air entering the housing 1 through the holes. A brush strip 202 is provided on the side of the heat dissipation side plate 2 corresponding to the filter screen 302 of the baffle 3. The brush strip 202 extends horizontally along the width direction of the heat dissipation side plate 2 and is fixed to the heat dissipation side plate 2. Specifically, a brush strip 202 is provided below each row of heat dissipation holes A201. The brush strip 202 is densely covered with short bristles, and the free ends of the bristles are in contact with the surface of the filter screen 302. To minimize gaps between the baffle 3 and the heat dissipation side plate 2, in this embodiment, the limiting groove 5 is designed as a through-groove structure without a bottom, penetrating the bottom plate of the housing 1, thus connecting the interior of the housing 1 with the outside at the position of the limiting groove 5. When the hydraulic rod 4 drives the baffle 3 to slide up and down, the baffle 3 undergoes relative displacement with respect to the heat dissipation side plate 2. The brush strip 202 fixed on the heat dissipation side plate 2 performs a scraping motion relative to the filter screen 302 on the baffle 3, and the brush bristles scrape off the dust adhering to the surface of the filter screen 302. The scraped-off dust falls along the surface of the filter screen 302 under the action of gravity and is eventually discharged outside the housing 1 through the through-groove structure of the limiting groove 5. This self-cleaning structure ensures that each temperature control cycle accompanies a cleaning process for the filter 302, maintaining its permeability and significantly slowing down the clogging process. It's worth noting that, thanks to the advanced technical features of this invention, the dust on the filter 302 is inherently less than that in traditional solutions. Furthermore, each change involves scraping, so even in a single change, the scraping motion doesn't repeatedly scrape like a motor-driven scraper in other existing electronic control technologies, nor does it significantly reduce the scraping effect, thus maintaining the cleanliness of the filter 302. Simultaneously, because the filter 302 has relatively little dust, the bottom channel is sufficient to meet the dust discharge requirements.

[0037] Example 5 This embodiment, based on any of the foregoing embodiments, further defines the integrated structure of the LED power supply's light sensor and multi-channel connector. The LED power supply also includes a light sensor, which is disposed on the top wall of housing 1, with its photosensitive surface facing the external environment. The light sensor is electrically connected to the PCB board inside housing 1 via wires, which pass through pre-drilled holes in the wall of housing 1, and the holes are sealed with waterproof adhesive. The light sensor is used to detect the ambient light intensity, providing a signal input for the automatic dimming control of the LED lighting system. The LED power supply also includes a multi-channel connector, disposed at the end of housing 1, for connecting external power input lines and LED load output lines. The multi-channel connector includes a connector body and multiple conductive terminals. The connector body is injection molded from engineering plastic and has multiple mutually isolated terminal cavities inside. The conductive terminals are made of tin-plated copper and are respectively disposed in each terminal cavity. Each conductive terminal is electrically connected to a corresponding circuit node on the PCB board via wires. The connection between the multi-channel connector body and the end of housing 1 is achieved using a waterproof adhesive sealing method. Specifically, the end of the housing 1 is provided with a mounting hole for installing a multi-channel connector. The diameter of the mounting hole is slightly larger than the outer diameter of the connector body. After the connector body is inserted into the mounting hole, waterproof sealant is injected into the annular gap between the connector body and the mounting hole. After the sealant cures, it forms a waterproof sealing layer to prevent external moisture and dust from entering the interior of the housing 1 through the connector mounting area. The sealant can be silicone sealant, polyurethane sealant, or epoxy resin sealant, and it should have good elasticity and weather resistance after curing.

[0038] It should be noted that the various embodiments of the present invention can be implemented individually or in combination.

[0039] It should also be noted that, for this invention, the core inventive concept is the adoption of an electrically control-free heat dissipation state switching method and the balancing of the contradiction between heat dissipation and dust prevention. The design of the hydraulic rod 4 using mineral wax medium in conjunction with the baffle 3 and the heat dissipation holes is the main technical feature of this invention and is described in detail in the specification. Some other conventional mechanical structures and connection methods are briefly or omitted in the specification. Apart from this, the basic functions of the LED power supply remain unchanged in the specification. It should be understood that the LED power supply involved in this invention includes not only the structures mentioned in the specification, but also all the necessary structures to realize its basic functions, as well as other unmentioned but reasonable structures and components in the field of LED power supply technology or known to those skilled in the art.

[0040] Finally, it should be noted that the described embodiments are merely some, not all, of the embodiments of the present invention. Those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents; that is, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A temperature-controlled, heat-dissipating, and dust-proof LED power supply, comprising a housing with a built-in PCB board and wiring, characterized in that, A set of opposing sidewalls of the housing are configured as heat dissipation side plates, which have heat dissipation holes A arranged in an array. A baffle that can open and close the heat dissipation holes A is slidably connected to the inner side of the heat dissipation side plate. Hydraulic rods are respectively provided inside the housing corresponding to the baffles. The driving end of the hydraulic rod is hinged to the baffle. The hydraulic rod is filled with a mineral wax medium, which is configured to melt into a liquid state at a specified temperature and control the moving end of the hydraulic rod to drive the baffle to open the heat dissipation hole A.

2. The LED power supply according to claim 1, characterized in that, Corresponding to the heat dissipation side plate, the baffle is provided with heat dissipation holes B arranged in an array. The relative positions of the baffle and the heat dissipation side plate are configured such that when the hydraulic rod drive end is in the retracted state, heat dissipation holes A and B are staggered; when the hydraulic rod drive end is in the extended state, heat dissipation holes A and B are aligned and connect the inside of the housing to the outside.

3. The LED power supply according to claim 1, characterized in that, The heat dissipation side plate is rotatably connected to the housing. When the hydraulic rod drives the baffle to open the heat dissipation hole A, the baffle moves closer to the top of the housing and pushes the heat dissipation side plate to rotate outward relative to the top of the housing to form an inclined side wall.

4. The LED power supply according to claim 3, characterized in that, The heat dissipation hole A is divided into upper and lower parts along the direction from the top to the bottom of the housing. The axis of the heat dissipation hole A in the upper part is inclined towards the top of the housing; the axis of the heat dissipation hole A in the lower part is inclined towards the bottom of the housing.

5. The LED power supply according to claim 3, characterized in that, The top and bottom of the housing are provided with torsion spring baffles corresponding to the two ends of the heat dissipation side plate. The torsion spring baffles abut against the outer wall of the heat dissipation side plate to keep the rear end of the heat dissipation side plate in a closed state with the housing.

6. The LED power supply according to claim 3, characterized in that, The bottom surface of the housing is provided with a limiting groove corresponding to the lower end of the baffle. When the hydraulic rod is in the retracted state, the lower end of the baffle is engaged with the limiting groove.

7. The LED power supply according to claim 6, characterized in that, At both ends of the slot, mounting grooves perpendicular to the baffle extend, and a return spring is provided in the mounting groove. One end of the return spring is hinged to the bottom of the mounting groove, and the other end is fixedly connected to the baffle.

8. The LED power supply according to claim 6, characterized in that, A filter screen is provided on the side of the baffle near the heat dissipation side plate, and a brush strip is provided on the side of the heat dissipation side plate corresponding to the baffle. The limiting slot is a through slot without a bottom. The brush strip can clean the filter screen when the baffle and the side plate slide relative to each other, and the cleaned dust is discharged from the housing through the limiting slot.

9. The LED power supply according to claim 1, characterized in that, The baffle has T-shaped grooves on both sides in the horizontal direction, and the heat dissipation side plate has corresponding T-shaped sliding strips.

10. The LED power supply according to any one of claims 1-9, characterized in that, The LED power supply also includes a light sensor and a multi-channel connector. The light sensor and the multi-channel connector are electrically connected to the PCB board, and the multi-channel connector and the housing end are connected by waterproof glue sealing.

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