LED street lamp with convection heat dissipation function
By designing a convection heat dissipation structure in LED street lamps and using the deflector and stirring plate to increase the entry rate of cold air, the problem of poor heat dissipation effect of existing LED street lamps is solved, and more efficient heat dissipation and extended service life are achieved.
Patent Information
- Application Number
- CN202420993611.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The heat dissipation effect of existing LED street lights is poor, resulting in a shortening of the service life of LED lights.
An LED street light with convection heat dissipation function was designed, using a flow guide plate, air inlet, flow guide, heat dissipation fin and air outlet to form a convection channel, and the stirring plate is driven by a motor to increase the entry rate of cold air.
It improves the heat dissipation efficiency of LED street lamps, extends the service life of LED lamps, and saves energy through automatic control motors.
Smart Images
Figure CN222669929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of LED street lamps, in particular to an LED street lamp with a convection heat dissipation function. Background Art
[0002] Street lights refer to lamps that provide lighting for roads. They generally refer to lamps within the range of road lighting in traffic lighting and are widely used in various places where lighting is needed.
[0003] LED has been recognized and widely used by the society for its advantages of high efficiency, energy saving, safety, reliability and long service life. With the emergence of high-brightness and high-power LEDs, the application fields have gradually expanded. Now it is also widely used in road lighting with good results.
[0004] Existing LED street lights need to work for a long time, and their internal controllers and other components will generate a lot of heat when working for a long time. However, the heat dissipation structure in LED street lights usually uses a single radiator or a radiator plus a fan. The radiator plus a fan will increase the cost and require additional heating. The existing single radiator usually uses heat conduction and heat dissipation to increase the contact area between the heat sink and the external air to dissipate heat, but the air cannot convect vertically, so the heat dissipation effect is poor, which greatly reduces the service life of the LED lamp. Utility Model Content
[0005] The utility model aims to provide an LED street lamp with a convection heat dissipation function which effectively improves the heat dissipation efficiency.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] An LED street lamp with convection heat dissipation function comprises a lampshade and an LED lamp board installed inside the lampshade, a connecting end is fixed at one end of the lampshade, the connecting end is used for threaded connection to a lamp pole, a guide plate is fixed inside the lampshade, two guide plates are provided, the two guide plates are arranged in a central symmetrical shape, the guide plates are composed of a parallel portion parallel to the top of the lampshade and an inclined portion integrated with the parallel portion, a heat flow channel is formed between the two inclined portions, the inclined portion of one of the guide plates faces the top of the lampshade, an air inlet section is arranged below the guide plate with the inclined portion facing the top of the lampshade, a plurality of air inlets are arranged at positions corresponding to the air inlet section of the lampshade, a heat dissipation fin fixed inside the lampshade is arranged above the other guide plate, and an air outlet slot is arranged at positions corresponding to the heat dissipation fins of the lampshade.
[0008] Furthermore, a partition plate fixed inside the lampshade is provided inside the air inlet zone, and a plurality of partition plates are provided along the length direction of the lampshade. The plurality of partition plates divide the air inlet zone into a plurality of air inlet areas, and each air inlet area corresponds to one of the air inlets.
[0009] Furthermore, a plurality of guide ports are provided on the guide plate located above the air inlet area, and each air inlet area includes one air inlet and one guide port.
[0010] By adopting the above technical solution, cold air can easily enter the top of the guide plate.
[0011] Furthermore, the lampshade is rotatably connected to a rotating shaft on the side, the rotating shaft extends toward the inside of the lampshade and passes through all the partition plates. The rotating shaft and the partition plates are rotatably connected, and a stirring plate is fixed to the outside of the rotating shaft. A stirring plate is arranged along the axial and circumferential directions of the rotating shaft, and all the stirring plates are disposed inside each air inlet area.
[0012] By adopting the above technical solution, the air inlet area is divided into multiple air inlet areas, and the air inlet and the guide port are matched one by one, thereby reducing flow obstruction and improving air inlet efficiency.
[0013] Furthermore, one end of the rotating shaft extends out along the side of the lampshade, and the extended end of the rotating shaft is connected to a motor, the motor electrical signal is connected to a temperature sensor, the temperature sensor is electrically connected to the LED light board, and the temperature sensor is also electrically connected to a PLC control module, the PLC control module is integrated on the LED light board, and the temperature sensor controls the opening and closing of the motor through the PLC control module.
[0014] By adopting the above technical solution, the opening and closing of the motor can be automatically controlled. When the temperature inside the lampshade is high, it will automatically turn on, saving energy and achieving automatic control.
[0015] Furthermore, a dustproof net is fixed inside the air outlet slot.
[0016] By adopting the above technical solution, dust accumulation at the air outlet slot can be avoided, thereby preventing the air outlet slot from affecting the air outlet.
[0017] Furthermore, a protective cover fixed to the side of the lampshade is arranged outside the motor, the motor is screwed inside the protective cover, and a plurality of heat dissipation holes are arranged at the bottom of the protective cover.
[0018] By adopting the above technical solution, the motor is protected by the protective cover, and heat dissipation holes are arranged at the bottom of the protective cover to take into account the heat dissipation of the motor when it is in use. At the same time, the heat dissipation holes are arranged at the bottom to prevent rainwater from entering, thereby further protecting the motor.
[0019] In summary, the beneficial technical effects of the utility model are:
[0020] 1. The convection channel is formed by using the heat flow channel between the air inlet, the air guide and the two guide plates, the heat dissipation fins and the air outlet slots. Cold air enters through the air inlet, driving the internal hot air to be discharged through the air outlet slots along the heat dissipation fins. At the same time, the stirring plate driven by the motor is stirred to increase the cold air entry rate and improve the overall heat dissipation performance inside the lampshade.
[0021] 2. The temperature sensor and PLC control module are used to automatically control the opening and closing of the motor. When the temperature inside the lampshade is high, it will automatically turn on, saving energy and automatic control;
[0022] 3. The motor is protected by a protective cover, and heat dissipation holes are set at the bottom of the protective cover to take into account the heat dissipation of the motor when it is in use. At the same time, the heat dissipation holes are set at the bottom to prevent rainwater from entering and further protect the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:
[0024] Figure 1 This is a schematic diagram of the structure of an LED street lamp with convection heat dissipation function in this embodiment;
[0025] Figure 2 This is a schematic diagram of the internal structure of a lampshade of an LED street lamp with a convection heat dissipation function according to this embodiment;
[0026] Figure 3 This is an LED street lamp with convection heat dissipation function in this embodiment. Figure 1 Schematic diagram from another perspective;
[0027] Figure 4 It is a schematic diagram of the exploded structure of an LED lamp board of an LED street lamp with convection heat dissipation function in this embodiment.
[0028] In the figure, 1. lampshade; 2. LED light board; 3. connection end; 4. guide plate; 5. air inlet section; 6. air inlet; 7. heat dissipation fins; 8. air outlet; 9. partition plate; 10. guide port; 11. rotating shaft; 12. stirring plate; 13. motor; 14. temperature sensor; 15. PLC control module; 16. dust net; 17. protective cover; 18. heat dissipation hole. DETAILED DESCRIPTION
[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] See also Figure 1-4 The utility model provides a technical solution: an LED street lamp with convection heat dissipation function, comprising a lampshade 1 and an LED lamp board 2 installed inside the lampshade 1, wherein a connecting end 3 is fixed at one end of the lampshade 1, and the connecting end 3 is used to be threadedly connected to a lamp pole, and a guide plate 4 is fixed inside the lampshade 1, wherein two guide plates 4 are provided, and the two guide plates 4 are centrally symmetrically arranged, wherein the guide plates 4 are composed of a parallel portion parallel to the top of the lampshade 1 and an inclined portion integrated with the parallel portion, and a heat flow channel is formed between the two inclined portions, wherein the inclined portion of one guide plate 4 faces the top of the lampshade 1, and an air inlet section 5 is arranged below the guide plate 4 having the inclined portion facing the top of the lampshade 1, and a plurality of air inlets 6 are arranged at positions corresponding to the air inlet section 5 of the lampshade 1, and a heat dissipation fin 7 fixed inside the lampshade 1 is arranged above the other guide plate 4, and an air outlet slot 8 is arranged at positions corresponding to the heat dissipation fin 7 of the lampshade 1.
[0032] A partition plate 9 fixed inside the lampshade 1 is provided inside the air inlet section 5 , and a plurality of partition plates 9 are provided along the length direction of the lampshade 1 . The plurality of partition plates 9 divide the air inlet section 5 into a plurality of air inlet areas, and each air inlet area corresponds to one of the air inlets 6 .
[0033] At the same time, a plurality of guide ports 10 are provided on the guide plate 4 located above the air inlet area 5 , and each air inlet area includes one air inlet 6 and one guide port 10 .
[0034] In this embodiment, a large amount of heat is generated when the lampshade 1 is working, and then the lampshade 1 is filled with hot air at this time, and the density of hot air is small, so the hot air rises to the top area of the lampshade 1 along the two guide plates 4, and at the same time, the cold air outside the lampshade 1 enters the air inlet section 5 along the air inlet 6, and then merges with the hot air through the guide port 10 above the air inlet section 5. At this time, the cold air continues to enter the air inlet area, and then blows the hot air along the position of the heat dissipation fins 7, and absorbs heat through the heat dissipation fins 7. After the heat is absorbed by the heat dissipation fins 7, the heat is discharged through the air outlet slots 8 to form convection.
[0035] A rotating shaft 11 is rotatably connected to the side of the lampshade 1. The rotating shaft 11 extends into the interior of the lampshade 1 and passes through all the partition plates 9. The rotating shaft 11 is rotatably connected to the partition plates 9. A stirring plate 12 is fixed to the outside of the rotating shaft 11. A number of stirring plates 12 are arranged along the axial and circumferential directions of the rotating shaft 11. All stirring plates 12 are disposed inside each air inlet area.
[0036] The above-mentioned air inlet space is partitioned by a partition plate 9, so that each air guide port 10 corresponds to each air inlet port 6. At the same time, a stirring plate 12 is arranged inside each air inlet area. In the present embodiment, the rotation direction of the stirring plate 12 is clockwise, which can continuously guide the cold air outside the lampshade 1 into the air inlet area. Compared with the air inlet space without using the partition plate 9, the air inlet speed of each air inlet area is increased, thereby accelerating the convection speed and improving the heat dissipation efficiency.
[0037] At the same time, a dustproof net 16 is arranged at the air outlet slot 8 to prevent excessive dust from entering, thereby ensuring smooth air outlet at the air outlet slot 8.
[0038] As an implementation mode, one end of the rotating shaft 11 extends out along the side of the lampshade 1, and the extended end of the rotating shaft 11 is connected to a motor 13. The motor 13 is electrically connected to a temperature sensor 14. The temperature sensor 14 is electrically connected to the LED lamp board 2. The temperature sensor 14 is also electrically connected to a PLC control module 15. The PLC control module 15 is integrated on the LED lamp board 2. The temperature sensor 14 controls the opening and closing of the motor 13 through the PLC control module 15.
[0039] The above-mentioned temperature sensor 14 and PLC control module 15 are both existing products and can be used directly. When in use, when the temperature inside the lampshade 1 reaches the sensing critical value of the temperature sensor 14, the temperature sensor 14 excites an electrical signal, and controls the motor 13 to turn on through the PLC control module 15. As the motor 13 turns on, the motor 13 drives the rotating shaft 11 to rotate. When the rotating shaft 11 rotates, the rotating shaft 11 drives the stirring plate 12 to rotate, forming the above-mentioned convection channel.
[0040] Furthermore, a protective cover 17 fixed to the side of the lampshade 1 is provided outside the motor 13 , the motor 13 is screwed inside the protective cover 17 , and a plurality of heat dissipation holes 18 are provided at the bottom of the protective cover 17 for protecting and dissipating heat from the motor 13 .
[0041] The working principle of the utility model is as follows: a convection channel is formed by utilizing the heat flow channel between the air inlet 6, the guide port 10 and the two guide plates 4, the heat dissipation fins 7 and the air outlet slots 8, and cold air enters along the air inlet 6, driving the internal hot air to be discharged through the air outlet slots 8 along the heat dissipation fins 7, and at the same time, the stirring plate 12 is driven by the motor 13 to stir and increase the cold air entry rate, thereby improving the overall heat dissipation performance inside the lampshade 1. At the same time, the motor 13 is automatically opened and closed by the PLC control module 15, and heat removal can be automatically performed when the inside of the lampshade 1 is overheated.
[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0043] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An LED street lamp with convection heat dissipation function, comprising a lampshade (1) and an LED lamp board (2) installed inside the lampshade (1), wherein a connecting end (3) is fixed at one end of the lampshade (1), and the connecting end (3) is used for threaded connection with a lamp pole, characterized in that: A guide plate (4) is fixed inside the lampshade (1), two guide plates (4) are provided, and the two guide plates (4) are arranged in a central symmetrical shape. The guide plate (4) is composed of a parallel portion parallel to the top of the lampshade (1) and an inclined portion integrally arranged with the parallel portion, and a heat flow channel is formed between the two inclined portions. The inclined portion of one of the guide plates (4) faces the top of the lampshade (1), and an air inlet section (5) is provided below the guide plate (4) having the inclined portion facing the top of the lampshade (1). The lampshade (1) is provided with a plurality of air inlets (6) at positions corresponding to the air inlet sections (5). A heat dissipation fin (7) fixed inside the lampshade (1) is provided above the other guide plate (4), and an air outlet slot (8) is provided at positions corresponding to the heat dissipation fin (7) of the lampshade (1).
2. The LED street lamp with convection heat dissipation function according to claim 1, characterized in that: The air inlet section (5) is provided with a partition plate (9) fixed inside the lampshade (1), and a plurality of partition plates (9) are provided along the length direction of the lampshade (1). The plurality of partition plates (9) divide the air inlet section (5) into a plurality of air inlet areas, and each air inlet area corresponds to one of the air inlets (6).
3. The LED street lamp with convection heat dissipation function according to claim 2, characterized in that: A plurality of guide ports (10) are provided on the guide plate (4) located above the air inlet area (5), and each air inlet area includes an air inlet (6) and a guide port (10).
4. The LED street lamp with convection heat dissipation function according to claim 2, characterized in that: The lampshade (1) is rotatably connected to a rotating shaft (11) on the side thereof. The rotating shaft (11) extends into the interior of the lampshade (1) and passes through all the partition plates (9). The rotating shaft (11) and the partition plates (9) are rotatably connected. A stirring plate (12) is fixed to the outside of the rotating shaft (11). A plurality of stirring plates (12) are arranged along the axial and circumferential directions of the rotating shaft (11). All the stirring plates (12) are arranged inside each air inlet area.
5. The LED street lamp with convection heat dissipation function according to claim 4, characterized in that: One end of the rotating shaft (11) extends out along the side of the lampshade (1); the extended end of the rotating shaft (11) is connected to a motor (13); the motor (13) is electrically connected to a temperature sensor (14); the temperature sensor (14) is electrically connected to the LED lamp board (2); the temperature sensor (14) is also electrically connected to a PLC control module (15); the PLC control module (15) is integrated on the LED lamp board (2); the temperature sensor (14) controls the opening and closing of the motor (13) through the PLC control module (15).
6. The LED street lamp with convection heat dissipation function according to claim 1, characterized in that: A dustproof net (16) is fixed inside the air outlet slot (8).
7. The LED street lamp with convection heat dissipation function according to claim 5, characterized in that: The motor (13) is provided with a protective cover (17) fixed to the side of the lampshade (1) outside, the motor (13) is screwed inside the protective cover (17), and the bottom of the protective cover (17) is provided with a plurality of heat dissipation holes (18).