Low-energy-consumption high-brightness outdoor LED court lamp

Abstract

The application relates to the technical field of lighting devices, in particular to a low-energy-consumption high-brightness outdoor LED court lamp which comprises a lamp body assembly, a heat conduction module, an optical adjustment assembly and a power supply control unit. The lamp body assembly adopts an aluminum alloy shell and a fin-shaped heat dissipation structure, the heat conduction module is in cooperative action with a heat dissipation substrate through a heat pipe to quickly dissipate heat, the optical adjustment assembly optimizes light distribution by using a reflector and a lens group, and the power supply control unit reduces energy consumption by using a constant current driving chip and a high-efficiency switching power supply. The application can effectively solve the problems of high energy consumption and insufficient heat dissipation under high brightness of the existing lamps, significantly improve the light efficiency and prolong the service life, and is suitable for night lighting of various sports grounds.

Description

Technical Field

[0001] This utility model belongs to the field of lighting equipment technology, specifically a low-energy-consumption, high-brightness outdoor LED stadium light. Background Technology

[0002] Outdoor LED stadium lights provide essential illumination for sports fields at night or in low-light environments. Their brightness and energy consumption directly impact performance and operating costs. Currently, common stadium light designs primarily achieve high brightness by increasing LED chip power or the number of lights, such as the multi-module combination used in some existing technologies to enhance light output. However, this approach often results in a significant increase in energy consumption, and insufficient heat dissipation leads to accelerated light decay, affecting lifespan. Furthermore, while some lights incorporate energy-saving designs, this usually comes at the cost of reduced brightness, making it difficult to meet the intensity requirements of professional stadiums. Therefore, reducing energy consumption and optimizing heat dissipation while maintaining high brightness has become a pressing technical challenge. Utility Model Content

[0003] This utility model relates to the field of lighting equipment technology, and in particular to a low-energy-consumption, high-brightness outdoor LED stadium light. Addressing the problems of significantly increased energy consumption and accelerated light decay due to insufficient heat dissipation in existing outdoor LED stadium lights when achieving high-brightness illumination, this utility model provides a low-energy-consumption, high-brightness outdoor LED stadium light that effectively solves the technical problems of excessive energy consumption under high-brightness output and shortened lifespan due to insufficient heat dissipation in existing lamps.

[0004] This invention provides a low-energy-consumption, high-brightness outdoor LED sports field light, which provides efficient and energy-saving lighting for sports fields. The sports field light includes: a lamp body assembly, a heat-conducting module, an optical adjustment assembly, and a power supply control unit. The lamp body assembly has an internal space to accommodate the light source and achieves a compact structure through an integrated design; the heat-conducting module is used to quickly conduct the heat generated by the light source to the external environment; the optical adjustment assembly is used to optimize light distribution and improve luminous efficiency; and the power supply control unit is used to provide a stable driving current to the light source and reduce power loss.

[0005] The lamp assembly includes a housing and a light source board. The housing is made of aluminum alloy, and its outer surface has multiple fin-shaped heat dissipation structures. These fin-shaped heat dissipation structures are evenly distributed along the length of the housing, with a spacing of 5mm to 8mm between each fin to ensure smooth airflow and enhance heat dissipation. The light source board is fixed to the bottom surface inside the housing. The light source board has multiple LED chips arranged in a matrix, with a spacing of 10mm to 15mm between adjacent LED chips to avoid localized overheating. The light source board and the housing are connected by a thermally conductive silicone layer with a thickness of 1mm to 2mm, which fills the gap between them and improves heat conduction efficiency.

[0006] The heat-conducting module includes a heat pipe and a heat dissipation substrate. One end of the heat pipe is tightly attached to the back of the light source board, and the other end extends into the finned heat dissipation structure of the outer casing. The heat pipe is filled with a thermally conductive medium, which forms a circulating flow path inside the heat pipe to quickly transfer the heat generated by the light source board to the finned heat dissipation structure. The heat dissipation substrate is fixed to the bottom of the outer casing. The heat dissipation substrate is made of copper and has multiple micropores on its surface. The diameter of the micropores is 0.5 mm to 1 mm, which further enhances the heat dissipation area and accelerates heat diffusion.

[0007] The optical adjustment assembly includes a reflector and a lens group. The reflector is positioned above the light source plate. The inner surface of the reflector is polished and coated with a high-reflectivity coating with a reflectivity of not less than 95%, used to concentrate and reflect the light emitted by the LED chip to the target area. The lens group is located in front of the reflector and consists of multiple independent lenses, each corresponding to one LED chip. The surface of each independent lens is specially curved to distribute light evenly and eliminate glare. The lens group is fixed to the front end of the housing via a snap-fit ​​structure, which includes an elastic arm and a limiting protrusion. The elastic arm cooperates with the limiting protrusion to achieve quick installation and removal of the lens group.

[0008] The power supply control unit includes a drive circuit board and a power module. The drive circuit board is fixed to the rear of the housing and has a constant current drive chip. The constant current drive chip provides a stable drive current to the LED chip, with an output current fluctuation range not exceeding ±2%. The power module is electrically connected to the drive circuit board and adopts a high-efficiency switching power supply design with a conversion efficiency of not less than 90%. It is used to convert the external input voltage into a DC voltage suitable for the LED chip's operation. The input terminal of the power module has a filter circuit, which includes an inductor and a capacitor connected in series to suppress high-frequency interference signals in the input voltage.

[0009] The low-energy-consumption, high-brightness outdoor LED stadium light provided by this invention effectively enhances heat dissipation and extends the lifespan of the light fixture during operation due to the aluminum alloy shell and finned heat dissipation structure of the lamp body components. The heat-conducting module, through the synergistic effect of heat pipes and a heat dissipation substrate, rapidly conducts the heat generated by the light source board to the external environment, thus avoiding light decay caused by insufficient heat dissipation. The optical adjustment component, through the cooperation of a reflector and lens group, concentrates and evenly distributes the light emitted by the LED chip, thereby improving luminous efficiency and meeting the lighting intensity requirements of professional stadiums. The power supply control unit, through the design of a constant current drive chip and a high-efficiency switching power supply, provides a stable drive current to the LED chip and reduces power loss, thus achieving low-energy operation. Therefore, the low-energy-consumption, high-brightness outdoor LED stadium light of this invention can significantly reduce energy consumption while ensuring high brightness output, and possesses excellent heat dissipation performance and luminous efficiency, making it widely applicable to nighttime lighting scenarios in various sports venues.

[0010] In the above technical solution, the connection and positional relationships between the components are clearly defined. For example, the light source board is connected to the outer shell through a thermally conductive silicone layer, one end of the heat pipe is attached to the light source board and the other end extends into the fin-shaped heat dissipation structure, and the lens assembly is fixed to the front end of the outer shell through a snap-fit ​​structure. These all demonstrate specific installation methods and technical means. These technical features, combined together, achieve the technical objectives of this utility model and solve the shortcomings of the prior art mentioned in the background section. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention, showing the external shape of the stadium light and the arrangement of its main modules.

[0012] Figure 2 This is an exploded view of the present invention, which focuses on showing the internal connection relationship and positional distribution of the lamp body assembly, the heat conduction module and the optical adjustment assembly.

[0013] Figure 3This is a magnified view of a portion of the lamp assembly, showing in detail the fin-shaped heat dissipation structure of the housing and the matrix LED chip layout of the light source board.

[0014] Figure 4 This is a schematic diagram of the heat dissipation module, highlighting the connection between the heat pipe and the heat dissipation substrate and its role in the heat dissipation path.

[0015] Figure 5 This is an exploded view of the optical adjustment components, showing the specific structure and installation method of the reflector, lens group, and snap-fit ​​structure.

[0016] Figure 6 This is a circuit block diagram of the power supply control unit. Briefly explain the functional composition and electrical connection relationship of the drive circuit board and power module.

[0017] The attached figures are labeled as follows:

[0018] 1. Lamp body assembly; 2. Housing; 3. Light source board; 4. Fin-shaped heat dissipation structure; 5. LED chip; 6. Thermally conductive silicone layer; 7. Thermally conductive module; 8. Heat pipe; 9. Heat dissipation substrate; 10. Optical adjustment assembly; 11. Reflector; 12. Lens group; 13. Snap-fit ​​structure; 14. Power supply control unit; 15. Driver circuit board; 16. Power module. Detailed Implementation

[0019] This utility model provides a low-energy-consumption, high-brightness outdoor LED stadium light, the specific implementation of which is described in conjunction with the attached diagram. Figure 1 To be continued Figure 6 Please provide a detailed explanation. For example... Figure 1 As shown, the overall structure of the stadium light includes a lamp body assembly 1, a heat conduction module 7, an optical adjustment assembly 10, and a power supply control unit 14. The connection relationships, positional distribution, and specific construction of each module are shown in the attached drawings and will be described in detail below.

[0020] The lamp body assembly 1 is the core structural component of the stadium light, mainly composed of the outer shell 2 and the light source board 3. The outer shell 2 is made of aluminum alloy, which has excellent thermal conductivity and mechanical strength. The outer surface of the outer shell 2 has multiple fin-shaped heat dissipation structures 4, which are evenly distributed along the length of the shell, with a spacing of 5mm to 8mm between adjacent fins. This design ensures smooth airflow while increasing the heat dissipation area, thereby improving heat dissipation efficiency. Figure 3As shown, the light source board 3 is fixed to the bottom surface inside the housing 2. Multiple LED chips 5 are mounted on the light source board 3, arranged in a matrix pattern with a spacing of 10mm to 15mm between adjacent chips. This layout effectively prevents localized overheating. The light source board 3 and the housing 2 are connected by a thermally conductive silicone layer 6, which is 1mm to 2mm thick. This layer fills the gap between the two and improves heat conduction efficiency. The thermally conductive silicone layer 6 must meet high thermal conductivity requirements to ensure rapid heat transfer to the housing 2.

[0021] The heat dissipation module 7 further enhances the heat dissipation performance of the lamp, and its specific structure is as follows: Figure 4 As shown. The heat-conducting module 7 includes a heat pipe 8 and a heat dissipation substrate 9. One end of the heat pipe 8 is tightly attached to the back of the light source plate 3, and the other end extends into the finned heat dissipation structure 4 of the outer shell 2. The heat pipe 8 is filled with a thermally conductive medium, which forms a circulating flow path inside the heat pipe 8 to quickly transfer the heat generated by the light source plate 3 to the finned heat dissipation structure 4. The installation of the heat pipe 8 must ensure tight contact between it and the light source plate 3 and the finned heat dissipation structure 4 to reduce thermal resistance. The heat dissipation substrate 9 is fixed to the bottom of the outer shell 2. The heat dissipation substrate 9 is made of copper and has multiple micropore structures on its surface, with a diameter of 0.5 mm to 1 mm. The micropore structure design further increases the heat dissipation area and accelerates the diffusion of heat to the external environment. The heat dissipation substrate 9 is fixed to the outer shell 2 by bolts or welding to ensure the stability of the connection.

[0022] The optical adjustment component 10 is used to optimize light distribution and improve light efficiency, and its specific structure is as follows: Figure 5 As shown. The optical adjustment assembly 10 includes a reflector 11 and a lens group 12. The reflector 11 is located above the light source plate 3, and its inner surface is polished and coated with a high-reflectivity coating with a reflectivity of not less than 95%. The reflector 11 is fixed to the front end of the housing 2 by a snap-fit ​​structure, which includes an elastic arm and a limiting protrusion. The elastic arm and the limiting protrusion cooperate to achieve quick installation and removal of the reflector 11. The lens group 12 is located in front of the reflector 11 and consists of multiple independent lenses, each corresponding to an LED chip 5. The surface of the independent lens is specially curved to distribute light evenly and eliminate glare. The lens group 12 is also fixed to the front end of the housing 2 by a snap-fit ​​structure 13. The design of the snap-fit ​​structure 13 is similar to that of the reflector 11, facilitating maintenance and replacement.

[0023] The power supply control unit 14 provides stable power support for the entire lighting fixture, and its specific circuit block diagram is as follows: Figure 6As shown. The power supply control unit 14 includes a drive circuit board 15 and a power module 16. The drive circuit board 15 is fixed to the rear of the housing 2 and has a constant current drive chip on it. The constant current drive chip provides a stable drive current for the LED chip 5, and its output current fluctuation range does not exceed ±2%. The selection of the constant current drive chip must meet the requirements of high precision and high stability to ensure that the LED chip 5 is always in the optimal operating state. The power module 16 is electrically connected to the drive circuit board 15. The power module 16 adopts a high-efficiency switching power supply design with a conversion efficiency of not less than 90%. The input terminal of the power module 16 is equipped with a filter circuit, which includes an inductor and a capacitor connected in series to suppress high-frequency interference signals in the input voltage. The design of the filter circuit must balance the filtering effect and size constraints to meet the overall compactness requirements of the lamp.

[0024] In actual operation, the working principle of the stadium lights is as follows: When an external power source is connected, the power module 16 converts the input voltage into a DC voltage suitable for the operation of the LED chip 5, and provides a stable driving current to the LED chip 5 through the constant current driving chip on the drive circuit board 15. After the LED chip 5 is powered on, it emits light, which is then concentrated and reflected by the reflector 11 and evenly distributed by the lens group 12 before being projected onto the target area. During this process, the heat generated by the LED chip 5 is transferred to the outer shell 2 through the thermally conductive silicone layer 6, and then conducted to the finned heat dissipation structure 4 through the heat pipe 8 and the heat dissipation substrate 9, and finally dissipated to the external environment through natural convection or forced air cooling. The synergistic effect between the modules ensures that the lamp maintains low energy consumption and good heat dissipation performance while outputting high brightness.

[0025] In the above embodiments, the connection relationships, positional relationships, and mutual cooperation relationships between the various components are described in detail. For example, the light source plate 3 is connected to the outer shell 2 through the thermally conductive silicone layer 6, one end of the heat pipe 8 is attached to the light source plate 3 and the other end extends into the fin-shaped heat dissipation structure 4, and the lens group 12 is fixed to the front end of the outer shell 2 through the snap-fit ​​structure 13, etc. These specific installation methods and technical means together achieve the technical objectives of this utility model and solve the shortcomings existing in the prior art.

[0026] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the implementation principle of this utility model is provided in conjunction with specific application scenarios.

[0027] In practical applications, this low-energy, high-brightness outdoor LED court light is installed on the lighting poles of basketball courts. Its operation involves the following steps:

[0028] First, after the lamp is installed, the external power supply is connected to the power supply control unit 14, and the power module 16 is then activated. The power module 16 uses its internal high-efficiency switching power supply design to convert the input AC voltage into a DC voltage suitable for the LED chip 5. During this process, the inductors and capacitors in the filter circuit work together to effectively suppress high-frequency interference signals in the input voltage, ensuring the stability of the output voltage. Subsequently, the constant current driver chip on the driver circuit board 15 receives the DC voltage from the power module 16 and converts it into a stable drive current, providing precise power supply support for the LED chip 5 on the light source board 3. The output current fluctuation range of the constant current driver chip is strictly controlled within ±2%, thereby ensuring that the LED chip 5 is always in optimal operating condition.

[0029] Secondly, after the LED chip 5 is powered on, it begins to emit light. The light is first reflected by the inner surface of the reflector 11. The inner surface of the reflector 11 is polished and coated with a high-reflectivity coating, with a reflectivity of no less than 95%, which can concentrate most of the light to reflect to the target area. Next, the light is further optimized and distributed by the lens group 12. Each independent lens corresponds to one LED chip 5, and its special curved surface design can evenly distribute the light and eliminate the light spot phenomenon caused by the point light source characteristics of the LED chip 5. This design of the optical adjustment component 10 significantly improves the light efficiency, making the lighting on the court surface more uniform and without obvious dark areas.

[0030] Meanwhile, the heat generated by the LED chip 5 during operation is rapidly transferred to the housing 2 through the thermally conductive silicone layer 6. The thermally conductive silicone layer 6, with a thickness of 1mm to 2mm, has a high thermal conductivity that ensures efficient heat conduction to the finned heat dissipation structure 4 of the housing 2. One end of the heat pipe 8 is tightly attached to the back of the light source board 3, while the other end extends into the finned heat dissipation structure 4. The heat-conducting medium within the heat pipe 8 forms a circulating flow path under the influence of temperature difference, rapidly transferring heat to the finned heat dissipation structure 4. Furthermore, the heat dissipation substrate 9 is fixed to the bottom of the housing 2, and its microporous structure further increases the heat dissipation area, accelerating the diffusion of heat to the external environment. Through natural convection or forced air cooling, the heat is ultimately dissipated into the surrounding air, effectively preventing light decay caused by insufficient heat dissipation.

[0031] Finally, for ease of maintenance, the optical adjustment assembly 10 of the luminaire is secured with a snap-fit ​​structure. When it is necessary to replace or clean the reflector 11 or lens assembly 12, the operator only needs to gently press the elastic arm to separate it from the limiting protrusion, allowing for quick disassembly of the relevant components. This design not only improves maintenance efficiency but also reduces maintenance costs.

[0032] The above steps demonstrate the operating principle and specific procedures of this invention in practical applications. Through the synergistic effect between the modules, the luminaire achieves high brightness output, low energy consumption, and excellent heat dissipation performance, meeting the requirements of professional sports fields for lighting intensity and stability. Simultaneously, the luminaire's overall structure is compact, facilitating installation and maintenance, and making it suitable for nighttime lighting scenarios in various sports venues.

[0033] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are prior art, and will not be described further here.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-energy-consumption, high-brightness outdoor LED sports field light, used to provide efficient and energy-saving lighting for sports fields, the sports field light comprising a lamp body assembly (1), a heat-conducting module (7), an optical adjustment assembly (10), and a power supply control unit (14), characterized in that: The lamp assembly (1) includes a housing (2) and a light source plate (3). The housing (2) is made of aluminum alloy and has multiple fin-shaped heat dissipation structures (4) on its outer surface. The fin-shaped heat dissipation structures (4) are evenly distributed along the length of the housing (2) and the spacing between adjacent fins is 5 mm to 8 mm. The light source plate (3) is fixed to the bottom surface inside the housing (2). The light source plate (3) has multiple LED chips (5) arranged in a matrix. The spacing between adjacent LED chips (5) is 10 mm to 15 mm. The light source plate (3) is connected to the housing (2) through a thermally conductive silicone layer (6) with a thickness of 1 mm to 2 mm. The heat-conducting module (7) includes a heat pipe (8) and a heat dissipation substrate (9). One end of the heat pipe (8) is tightly attached to the back of the light source board (3), and the other end extends into the fin-shaped heat dissipation structure (4) of the outer shell (2). The heat pipe (8) is filled with a heat-conducting medium. The heat dissipation substrate (9) is fixed to the bottom of the outer shell (2). The heat dissipation substrate (9) is made of copper material and has multiple micropore structures on its surface. The diameter of the micropore structures is 0.5 mm to 1 mm. The optical adjustment assembly (10) includes a reflector (11) and a lens group (12). The reflector (11) is located above the light source plate (3). The inner surface of the reflector (11) is coated with a coating with a reflectivity of not less than 95%. The lens group (12) is located in front of the reflector (11). The lens group (12) is composed of multiple independent lenses, each of which corresponds to an LED chip (5). The lens group (12) is fixed to the front end of the outer shell (2) by a snap-fit ​​structure (13). The power supply control unit (14) includes a drive circuit board (15) and a power module (16). The drive circuit board (15) is fixed to the rear of the housing (2). A constant current drive chip is provided on the drive circuit board (15). The output current fluctuation range of the constant current drive chip does not exceed ±2%. The power module (16) is electrically connected to the drive circuit board (15). The power module (16) adopts a switching power supply design with a conversion efficiency of not less than 90%. The input terminal of the power module (16) is provided with a filter circuit, which includes an inductor and a capacitor connected in series.

2. The outdoor LED stadium light according to claim 1, characterized in that: The height of the finned heat dissipation structure (4) is 20 mm to 30 mm, and the width between adjacent fins is 5 mm to 8 mm.

3. The outdoor LED stadium light according to claim 1, characterized in that: The number of heat pipes (8) is 2 to 4, and the diameter of the heat pipes (8) is 6 mm to 8 mm.

4. The outdoor LED stadium light according to claim 1, characterized in that: The inner surface of the reflector (11) is polished. The reflector (11) is fixed to the front end of the outer shell (2) by a snap-fit ​​structure, which includes an elastic arm and a limiting protrusion.

5. The outdoor LED stadium light according to claim 1, characterized in that: The surface of each individual lens in the lens group (12) is curved, and the diameter of the individual lens is 10 mm to 15 mm.

6. The outdoor LED stadium light according to claim 1, characterized in that: The thickness of the heat dissipation substrate (9) is 2 mm to 3 mm, and the heat dissipation substrate (9) is fixed to the bottom of the outer shell (2) by bolts or welding.

7. The outdoor LED stadium light according to claim 1, characterized in that: The input voltage range of the power module (16) is AC 100V to 240V, and the output voltage of the power module (16) is DC 24V to 48V.

8. The outdoor LED stadium light according to claim 1, characterized in that: The outer shell (2) has a length of 300 mm to 500 mm, a width of 200 mm to 300 mm, and a height of 100 mm to 150 mm.

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