Self-ventilation projection lamp and ventilation method thereof

Abstract

The invention discloses a self-ventilation projection lamp and a ventilation method thereof. The self-ventilation projection lamp comprises a shell, an air inlet, an air outlet, an air outlet, a light source, a light source and a light source, the lampshade covers the opening of the shell, a light source assembly is arranged on the side, close to the shell, of the lampshade, and the light source assembly is fixedly connected to the inner wall of the shell and provided with a temperature sensor used for detecting the temperature of the light source assembly; the ventilation assembly is arranged corresponding to the ventilation hole and comprises a ventilation box, ventilation holes are formed corresponding to the ventilation hole, a movable groove is formed in the ventilation box, an electromagnet is arranged on the top wall of the movable groove, a sliding iron block is slidably connected into the movable groove, and an elastic piece is fixedly connected to the end, back on to the electromagnet, of the sliding iron block; one end of the elastic piece away from the sliding iron block is connected to the bottom wall of the movable groove; the sliding iron block abuts against the electromagnet in the initial state, and when the temperature rises, the electromagnet correspondingly weakens the magnetic force according to feedback of the temperature sensor, so that the sliding iron block gradually gets away from the electromagnet, and the vent hole is opened.

Description

Technical Field

[0001] The present invention relates to the technical field of floodlights, and in particular to a self-ventilating floodlight and a ventilation method thereof. Background Art

[0002] In modern lighting equipment, floodlights are an important light source and are widely used in outdoor lighting, landscape lighting, architectural lighting, stage lighting and other fields. Floodlights usually need to work at high power to provide strong light output. However, floodlights under high-power working conditions tend to generate a lot of heat. If the heat dissipation is not sufficient, it will lead to faster light decay, shortened service life, and even cause safety hazards.

[0003] Floodlights are usually placed outdoors. In order to prevent rain and other things from entering the lamp, the traditional floodlights are sealed. Although this improves the waterproof performance, it also reduces the heat dissipation effect, causing excessive heat accumulation in the lamp. With the increase in the power demand for floodlights, existing floodlights usually use passive heat dissipation methods, such as installing heat dissipation fins on the sealed lamp body and using high thermal conductivity materials. However, passive heat dissipation methods often fail to effectively dissipate the heat generated by the lamp to the outside world, and are still prone to causing excessive temperatures inside the lamp.

[0004] Therefore, it is necessary to provide a self-ventilating floodlight and a ventilation method thereof to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a self-ventilating floodlight and a ventilation method thereof, aiming to solve the technical problems mentioned in the above background technology.

[0006] The present invention adopts the following technical solutions: A self-ventilating floodlight, comprising: A shell, one end of which is provided with an opening, a receiving chamber is provided in the shell, and two opposite sides of the shell are provided with ventilation holes; A lampshade, covering the opening of the housing, wherein a light source assembly is disposed on a side of the lampshade close to the housing, the light source assembly is fixedly connected to an inner wall of the housing, and is provided with a temperature sensor for detecting the temperature of the light source assembly; A ventilation component is arranged on the outside of the shell, and the ventilation component includes a ventilation box, the ventilation box is provided with a ventilation hole connected to the ventilation hole, a movable groove is arranged in the ventilation box, an electromagnet is arranged on the top wall of the movable groove, a sliding iron block is slidably connected in the movable groove, an elastic member is fixedly connected to the end of the sliding iron block facing away from the electromagnet, and the end of the elastic member away from the sliding iron block is connected to the bottom wall of the movable groove, wherein the electromagnet is electrically connected to the temperature sensor, the sliding iron block abuts against the electromagnet, and when the sliding iron block is away from the electromagnet, the ventilation hole is opened.

[0007] Furthermore, an air intake channel is also provided in the ventilation box, and the air intake channel is connected with the movable groove and the vent, and the air intake channel is obliquely downward toward the bottom of the shell, and an end of the air intake channel away from the shell is detachably connected with a dustproof net, wherein the bottom wall of the air intake channel is provided with a waterproof step, and the waterproof step passes through the bottom end of the ventilation box.

[0008] Furthermore, a thrust bearing is also provided in the ventilation hole, a fixed portion of the thrust bearing is fixedly connected to the ventilation hole, and a rotating portion of the thrust bearing is fixedly connected to the ventilation box; A counterweight is provided at the bottom of the ventilation box, wherein when the shell rotates, the ventilation box rotates around the axis of the thrust bearing so that the air intake passage remains obliquely downward toward the bottom of the shell.

[0009] Furthermore, a hair dryer and an exhaust fan are respectively provided in the two ventilation holes, the air outlet of the hair dryer faces the accommodating chamber, and the air outlet of the exhaust fan faces the ventilation hole; A temperature switch is also provided on an end surface of the light source assembly away from the lampshade, and the temperature switch is electrically connected to the hair dryer and the exhaust fan.

[0010] Furthermore, a circulation component is arranged in the accommodating chamber, and the circulation component includes a blower and an arc-shaped air guide plate. The blower is fixedly arranged on the inner wall of the shell, and the blower is electrically connected to the temperature switch. The air guide plate is arranged on a side of the accommodating chamber away from the blower, and the air guide plate is arranged corresponding to the air outlet of the blower, and the arc-shaped opening of the air guide plate faces the middle of the accommodating chamber.

[0011] Furthermore, the light source assembly includes a base, which is fixedly connected to the inner wall of the shell, and the base has a plurality of lamp cups extending away from the lampshade, the lamp cups are coated with a reflective coating on one side facing the lampshade, and lamp beads are fixedly arranged on the side of the lamp cups facing the lampshade.

[0012] Furthermore, a serpentine heat dissipation pipe is fixedly arranged on one side of the base away from the lampshade, the serpentine heat dissipation pipe is arranged around the lamp cup, and the serpentine heat dissipation pipe is connected to one end of the accommodating chamber away from the lampshade; A cooling fin is provided at one end of the accommodating chamber away from the lampshade, and the heating end surface of the cooling fin is attached to the inner wall of the shell. A cooling fin array is provided at one end of the shell facing away from the lampshade. The shell is provided with a plurality of slots corresponding to the cooling fin array, and the cooling fin array is plugged into the slots and fixedly connected to the shell.

[0013] The present application also provides a ventilation method for a self-ventilation floodlight, which is applied to any of the above-mentioned self-ventilation floodlights, comprising: Configure the preset temperature threshold for normal operation of the light source component; Acquire the current temperature value of the light source assembly and the current current value of the electromagnet through a temperature sensor, and compare the current temperature value with the preset temperature threshold; When the current temperature value is less than or equal to the preset temperature threshold, the current current value is kept unchanged, and the electromagnet continues to attract the sliding iron block to keep the vent hole closed; When the current temperature value is greater than the preset temperature threshold, the current current value is reduced, the electromagnet reduces the magnetic force to release the sliding iron block, and the elastic member pulls the sliding iron block to move away from the electromagnet to open the vent hole.

[0014] Furthermore, the step of configuring a preset temperature threshold for normal operation of the light source assembly includes: According to the type and power parameters of the light source assembly, a standard temperature range for normal operation of the light source assembly is obtained, and the highest value in the standard temperature range is selected as the highest standard temperature value; Testing the temperature data of the light source assembly under different working conditions, obtaining a safe temperature range for normal operation of the light source assembly, and selecting the highest value in the safe temperature range as the highest safe temperature value; respectively configuring weights for the maximum standard temperature value and the maximum safe temperature value; Based on the weights of the highest standard temperature value and the highest safety temperature value, the highest standard temperature value and the highest safety temperature value are weightedly fused and calculated to obtain the preset temperature threshold.

[0015] Furthermore, the step of testing the temperature data of the light source assembly under different working conditions to obtain a safe temperature range for normal operation of the light source assembly includes: Testing the light source assembly based on different ambient temperatures, different load levels and different ventilation conditions, screening the temperature data of normal operation of the light source assembly, and forming a temperature data set; Analyzing the temperature data set and removing outliers; The maximum value and the minimum value in the temperature data set are selected as the safe temperature range.

[0016] Beneficial effects: In the present invention, the sliding iron block in the ventilation assembly is initially in contact with the electromagnet, and is connected to the temperature sensor arranged in the light source assembly through the electromagnet, so that when the temperature in the light source assembly rises, the electromagnet will weaken the magnetic force accordingly according to the feedback of the temperature sensor, so that the sliding iron block is driven by the elastic member and gradually moves away from the electromagnet, opening the air vent, so that the air vent and the ventilation hole are connected, so that the floodlight can realize the self-ventilation function, and the hot air inside the lamp is discharged when the temperature rises, thereby solving the problem of excessive temperature inside the lamp due to poor sealing and heat dissipation in traditional floodlights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a self-ventilating floodlight of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of a self-ventilating floodlight of the present invention; Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 is a structural schematic diagram of a light source assembly of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of a self-ventilating floodlight of the present invention from another direction; Figure 6 This is a partial schematic diagram of a self-ventilating floodlight of the present invention. Figure 7 This is a schematic diagram of the overall structure of a self-ventilating floodlight of the present invention from another direction. Figure 8 This is a schematic diagram of a flow chart of a self-ventilating floodlight ventilation method of the present invention. Among them: 1. Shell; 101. Accommodating chamber; 2. Lampshade; 3. Light source assembly; 31. Base; 32. Lamp cup; 33. Lamp bead; 4. Temperature sensor; 5. Ventilation assembly; 51. Ventilation box; 52. Ventilation hole; 53. Movable slot; 54. Electromagnet; 55. Sliding iron block; 56. Elastic part; 57. Air intake channel; 58. Waterproof step; 6. Dustproof net; 7. Thrust bearing; 8. Counterweight; 9. Hair dryer; 10. Exhaust fan; 11. Temperature switch; 12. Blower; 13. Air guide plate; 14. Serpentine heat pipe; 15. Refrigeration plate; 16. Heat dissipation fin array.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] Embodiment 1: Reference Figures 1 to 4 The present invention proposes a self-ventilating floodlight, comprising: a housing 1, one end of the housing 1 is provided with an opening, a receiving chamber 101 is provided in the housing 1, and ventilation holes are provided on opposite sides of the housing 1; a lampshade 2 covering the opening of the housing 1, a light source assembly 3 being provided on a side of the lampshade 2 close to the housing 1, the light source assembly 3 being fixedly connected to the inner wall of the housing 1, and a temperature sensor 4 for detecting the temperature of the light source assembly 3; The ventilation component 5 is arranged on the outer side of the shell 1, and the ventilation component 5 includes a ventilation box 51. The ventilation box 51 is provided with a vent 52 connected to the ventilation hole. A movable groove 53 is arranged in the ventilation box 51. The top wall of the movable groove 53 is provided with an electromagnet 54. A sliding iron block 55 is slidably connected in the movable groove 53. An elastic member 56 is fixedly connected to the end of the sliding iron block 55 facing away from the electromagnet 54. The end of the elastic member 56 away from the sliding iron block 55 is connected to the bottom wall of the movable groove 53, wherein the electromagnet 54 is electrically connected to the temperature sensor 4, and the sliding iron block 55 abuts against the electromagnet 54. When the sliding iron block 55 is away from the electromagnet 54, the vent 52 is opened.

[0024] In the above embodiment, the housing 1 is the outer shell of the floodlight, one end of which is open, and the interior is hollow to form a receiving chamber 101, and ventilation holes are provided on the two side walls of the housing 1. The lampshade 2 covers the opening of the housing 1, and the light source assembly 3 is fixedly arranged on the inner wall of the opening of the housing 1. The temperature sensor 4 is attached to the back of the light source assembly 3 to monitor the working temperature of the light source assembly 3 in real time.

[0025] The ventilation box 51 is close to the outer shell, and the ventilation box 51 can be connected to the outside world. The ventilation hole 52 is opened to achieve connection with the ventilation hole. The movable groove 53 is set on the inner side of the ventilation hole 52 for the sliding iron block 55 to move therein. The top wall of the movable groove 53 is installed with an electromagnet 54, and the bottom wall of the movable groove 53 is connected to an elastic member 56. The electromagnet 54 can change its magnetic force by adjusting the current. The elastic member 56 is preferably a tension spring. The electromagnet 54 is initially attracted to the sliding iron block 55 to isolate the ventilation hole 52 from the outside world. The tension spring is in a stretched state. When the current in the electromagnet 54 becomes smaller, the magnetic force of the electromagnet 54 will weaken. Under the pull of the tension spring, the sliding iron block 55 can gradually move away from the electromagnet 54, so that the ventilation hole 52 is connected to the outside world.

[0026] To sum up, in the present invention, the sliding iron block 55 in the ventilation assembly 5 is initially in contact with the electromagnet 54, and is connected to the temperature sensor 4 arranged in the light source assembly 3 through the electromagnet 54, so that when the temperature in the light source assembly 3 rises, the electromagnet 54 will weaken the magnetic force accordingly according to the feedback of the temperature sensor 4, so that the sliding iron block 55 is driven by the elastic member 56 and gradually moves away from the electromagnet 54, opening the vent 52, so that the vent 52 is connected with the ventilation hole, so that the floodlight can realize the self-ventilation function, and the hot air inside the lamp is discharged when the temperature rises, thereby solving the problem of excessive temperature inside the lamp due to poor sealing and heat dissipation in traditional floodlights.

[0027] In another embodiment, the present invention further provides a control circuit for controlling the working state of the ventilation component 5. The control circuit includes a temperature sensor 4, an electromagnet 54 driving circuit and a microprocessor. The temperature sensor 4 monitors the temperature of the light source component 3 in real time and transmits the temperature signal to the microprocessor. The microprocessor determines whether the ventilation component 5 needs to be started according to the temperature signal, and sends a control signal to the electromagnet 54 driving circuit. The electromagnet 54 driving circuit controls the current passing through the electromagnet 54 according to the instructions of the microprocessor, thereby realizing precise control of the ventilation component 5.

[0028] In one embodiment, an air intake channel 57 is further provided in the ventilation box 51, and the air intake channel 57 is connected with the movable groove 53 and the vent hole 52, and the air intake channel 57 is obliquely downward toward the bottom of the shell 1, and the end of the air intake channel 57 away from the shell 1 is detachably connected to a dustproof net 6, wherein the bottom wall of the air intake channel 57 is provided with a waterproof step 58, and the waterproof step 58 passes through the bottom end of the ventilation box 51.

[0029] In the above embodiment, the air inlet channel 57 of the ventilation box 51 is inclined downward from the inside to the outside to ensure that moisture from the environment is prevented from entering when air flows into the ventilation box 51. The end of the air inlet channel 57 away from the housing 1 is detachably connected to the dustproof net 6 by threaded connection or snap-on method to prevent dust and debris from entering the interior of the ventilation box 51, thereby ensuring ventilation effect and extending the service life of the equipment.

[0030] A waterproof step 58 is provided on the bottom wall of the inclined air inlet passage 57 to prevent rainwater or liquid from entering the interior of the ventilation box 51 from the air inlet passage 57. The waterproof step 58 is horizontally opened in the air inlet passage 57, and a flow channel penetrating the bottom end of the ventilation box 51 is opened at the bottom of the waterproof step 58 to ensure that in the case of heavy rain, the liquid can flow along the waterproof step 58 to the outside of the ventilation box 51 instead of entering the housing 1, thereby improving the waterproof performance of the device.

[0031] In one example, a thrust bearing 7 is further provided in the ventilation hole, a fixed portion of the thrust bearing 7 is fixedly connected to the ventilation hole, and a rotating portion of the thrust bearing 7 is fixedly connected to the ventilation box 51; a counterweight 8 is provided at the bottom of the ventilation box 51, wherein when the shell 1 rotates, the ventilation box 51 rotates around the axis of the thrust bearing 7 to keep the air intake passage 57 obliquely downward toward the bottom of the shell 1.

[0032] In the above embodiment, the fixed outer ring of the thrust bearing 7 fits the ventilation hole, and the rotating part of the thrust bearing 7 is flush with the outer side surface of the shell 1, so that it can be connected to the ventilation box 51 to avoid a gap between the ventilation box 51 and the shell 1.

[0033] The setting of the counterweight 8 ensures that the ventilation box 51 can remain stable when the housing 1 rotates. When the housing 1 rotates due to a change in the installation angle or an external force, the gravity of the counterweight 8 enables the ventilation box 51 to adjust around the axis of the thrust bearing 7, thereby keeping the air inlet channel 57 always obliquely downward toward the bottom of the housing 1. Even when the housing 1 is tilted, the ventilation box 51 can still effectively guide the air flow while maintaining the waterproof function.

[0034] In one embodiment, a hair dryer 9 and an exhaust fan 10 are respectively provided in the two ventilation holes, the air outlet of the hair dryer 9 is toward the accommodating chamber 101, and the air outlet of the exhaust fan 10 is toward the ventilation hole 52; a temperature switch 11 is also provided on an end surface of the light source assembly 3 away from the lampshade 2, and the temperature switch 11 is electrically connected to the hair dryer 9 and the exhaust fan 10.

[0035] In the above embodiment, the blower 9 and the exhaust fan 10 are integrated into the ventilation system to further optimize the heat dissipation performance of the floodlight. The air outlet of the blower 9 faces the accommodating chamber 101, and can blow external cold air into the interior of the lamp body to help reduce the temperature of the light source assembly 3. The exhaust fan 10 is located near the vent 52 and is responsible for extracting the hot air inside the lamp body, thereby forming an effective air circulation.

[0036] The temperature switch 11 is arranged on an end face of the light source assembly 3 away from the lampshade 2, that is, on the same end face as the temperature sensor 4, and works in conjunction with the temperature sensor 4. The temperature switch 11 is of a normally closed type, and is automatically triggered when the temperature of the light source assembly 3 exceeds a predetermined threshold, and the blower 9 and the exhaust fan 10 are started, so that even when the ambient temperature is high or the workload of the light source assembly 3 is large, the internal temperature of the lamp can be kept within an appropriate range, thereby preventing the electronic components of the floodlight from being damaged or the performance from being degraded due to overheating.

[0037] refer to Figure 2 and Figure 5-6In one embodiment, a circulation component is provided in the accommodating chamber 101, and the circulation component includes a blower 12 and an arc-shaped air guide plate 13. The blower 12 is fixedly arranged on the inner wall of the shell 1, and the blower 12 is electrically connected to the temperature switch 11. The air guide plate 13 is arranged on a side of the accommodating chamber 101 away from the blower 12, and the air guide plate 13 is arranged corresponding to the air outlet of the blower 12, and the arc-shaped opening of the air guide plate 13 faces the middle of the accommodating chamber 101.

[0038] In the above embodiment, the blower 12 of the circulation assembly is responsible for circulating the cold air introduced by the hair dryer 9 in the receiving chamber 101, and the cold air is evenly distributed in the entire chamber through the guidance of the arc-shaped air guide plate 13. The arc-shaped air guide plate 13 makes the air flow smoother and avoids the uneven temperature caused by direct convection of cold and hot air. At the same time, the arc opening faces the middle of the receiving chamber 101, which helps to evenly transport the cold air to the surrounding of the light source assembly 3, thereby improving the heat dissipation efficiency.

[0039] In addition, the blower 12 is also electrically connected to the temperature switch 11 to ensure that it automatically starts when the temperature of the light source assembly 3 exceeds a predetermined threshold, so that air circulation is formed in the accommodating chamber 101, and cold air is fully utilized to further enhance the heat dissipation effect. The setting of the temperature switch 11 enables the system to intelligently adjust the working state according to the actual temperature conditions, which not only ensures the heat dissipation requirements of the lamp, but also avoids unnecessary energy consumption.

[0040] In one embodiment, the light source assembly 3 includes a base 31, the base 31 is fixedly connected to the inner wall of the shell 1, the base 31 has a plurality of lamp cups 32 extending away from the lampshade 2, the lamp cups 32 are coated with a reflective coating on the side facing the lampshade 2, and lamp beads 33 are fixedly arranged on the side facing the lampshade 2.

[0041] In the above embodiment, the base 31 in the light source assembly 3 serves as the basis of the entire assembly and is fixedly connected to the inner wall of the housing 1 to ensure the stability of the light source assembly 3. A plurality of lamp cups 32 extend away from the side of the lampshade 2, so that the light of the lamp beads 33 in each lamp cup 32 can be focused to a certain extent, thereby making the total light source distribution more uniform and improving the lighting efficiency. The number of lamp cups 32 can be adjusted according to actual application requirements. The side of the lamp cup 32 facing the lampshade 2 is coated with a reflective coating to enhance the reflection effect of the light, making the light more concentrated and improving the lighting brightness.

[0042] refer to Figure 5-7In one embodiment, a serpentine heat dissipation pipe 14 is fixedly provided on a side of the base 31 away from the lampshade 2, the serpentine heat dissipation pipe 14 is arranged around the lamp cup 32, and the serpentine heat dissipation pipe 14 is connected to an end of the accommodating chamber 101 away from the lampshade 2; a cooling fin 15 is provided at an end of the accommodating chamber 101 away from the lampshade 2, and the heating end surface of the cooling fin 15 is attached to the inner wall of the shell 1, and a heat dissipation fin array 16 is provided at an end of the shell 1 facing away from the lampshade 2, and a plurality of slots are provided on the shell 1 corresponding to the heat dissipation fin array 16, and the heat dissipation fin array 16 is plugged into the slots and fixedly connected to the shell 1.

[0043] In the above embodiment, the serpentine heat dissipation pipe 14 and the cooling sheet 15 work together. The serpentine heat dissipation pipe 14 surrounds each lamp cup 32, and can effectively transfer the heat generated by the lamp beads 33 in the light source assembly 3 to the side of the accommodating chamber 101 away from the light source assembly 3, that is, the inner side of the housing 1, through the serpentine heat dissipation pipe 14, and transfer it to the outside through the housing 1. The heating end surface of the cooling sheet 15 is close to the inner wall of the housing 1, and the semiconductor refrigeration effect is used to quickly transfer the heat from the accommodating chamber 101 area to the outside of the housing 1.

[0044] The heat dissipation fin array 16 is inserted into the slot at the end of the housing 1 facing away from the lampshade 2, and is fixedly connected to the housing 1 to form a large heat dissipation surface. When the cooling fin 15 is working, the heat dissipation fin array 16 can quickly dissipate heat to the external environment, thereby effectively reducing the temperature of the accommodating chamber 101, ensuring that the lamp can still maintain good heat dissipation performance under long-term working conditions.

[0045] Embodiment 2: refer to Figure 8 The present application also provides a ventilation method for a self-ventilating floodlight, which is applied to any of the self-ventilating floodlights described above, and the method comprises: S1: configuring a preset temperature threshold for normal operation of the light source assembly 3; S2: obtaining the current temperature value of the light source assembly 3 and the current current value of the electromagnet 54 through the temperature sensor 4, and comparing the current temperature value with the preset temperature threshold; S3: when the current temperature value is less than or equal to the preset temperature threshold, the current current value is kept unchanged, the electromagnet 54 continues to attract the sliding iron block 55, and the vent hole 52 is kept closed; S4: When the current temperature value is greater than the preset temperature threshold, the current current value is reduced, the electromagnet 54 reduces the magnetic force to release the sliding iron block 55, and the elastic member 56 pulls the sliding iron block 55 to move away from the electromagnet 54 to open the vent hole 52.

[0046] In the above embodiment, the preset temperature threshold in S1 can be set according to the actual use environment and the heat dissipation capacity of the light source assembly 3 to ensure stable operation of the lamp under different working conditions. For example, if the lamp is used in a high temperature environment, the preset temperature threshold can be set relatively low to avoid damage caused by overheating of the light source assembly 3.

[0047] In step S2, the temperature sensor 4 monitors the temperature of the light source assembly 3 in real time and transmits the data to the control unit. The control unit determines whether to start the ventilation mechanism according to the preset temperature threshold. At the same time, the control unit also monitors the current value of the electromagnet 54 to ensure that the electromagnet 54 works normally.

[0048] In step S3, when the temperature of the light source assembly 3 is lower than or equal to the preset temperature threshold, the control unit keeps the current value of the electromagnet 54 unchanged, ensuring that the electromagnet 54 continues to attract the sliding iron block 55, so that the vent 52 remains closed. This can prevent external pollutants such as dust and moisture from entering the interior of the lamp, affecting the service life and lighting effect of the lamp.

[0049] In step S4, when the temperature of the light source assembly 3 exceeds the preset temperature threshold, the control unit reduces the current value of the electromagnet 54, so that the magnetic force of the electromagnet 54 is reduced. Under the force of the elastic member 56, the sliding iron block 55 moves away from the electromagnet 54, and the vent 52 is opened. At this time, the outside air can enter the interior of the lamp through the vent 52, taking away the excess heat, thereby reducing the temperature of the light source assembly 3. The opening and closing of the vent 52 is achieved by the cooperation of the electromagnet 54 and the sliding iron block 55, ensuring the rapid and reliable ventilation process.

[0050] In addition, the ventilation method in this embodiment can also be combined with other heat dissipation measures to further improve the heat dissipation efficiency. By comprehensively using a variety of heat dissipation means, it can be ensured that the lamp can maintain good heat dissipation performance in various complex environments, extend its service life, and improve the lighting effect.

[0051] Wherein, in step S1, the step of configuring the preset temperature threshold for normal operation of the light source assembly 3 includes: S21: acquiring a standard temperature range for normal operation of the light source assembly 3 according to the type and power parameters of the light source assembly 3, and selecting the highest value in the standard temperature range as the highest standard temperature value; S22: Testing the temperature data of the light source assembly 3 under different working conditions, obtaining a safe temperature range for normal operation of the light source assembly 3, and selecting the highest value in the safe temperature range as the highest safe temperature value; S23: configuring weights for the highest standard temperature value and the highest safety temperature value respectively; S24: Based on the weights of the highest standard temperature value and the highest safety temperature value, a weighted fusion calculation is performed on the highest standard temperature value and the highest safety temperature value to obtain the preset temperature threshold.

[0052] In S21, the type and power parameters of the light source assembly 3 can be obtained according to the relevant technical manual or product specification of the lamp. After obtaining these parameters, the highest value in the standard temperature range is selected as the highest standard temperature value to ensure that the light source assembly 3 can still work normally under the worst conditions.

[0053] In S22, it is crucial to test the temperature data of the light source assembly 3 under different working conditions. These working conditions include ambient temperature, humidity, air flow velocity, etc. By simulating these conditions, the safe temperature range of the light source assembly 3 in actual use can be more accurately obtained. For example, the LED light source assembly 3 can be tested in an environment of high temperature, high humidity, and low airflow to ensure that it can still maintain stable operation under extreme conditions. After obtaining the safe temperature range, the highest value therein is selected as the highest safe temperature value to ensure the safe operation of the light source assembly 3 in various complex environments.

[0054] In S23, weights are configured for the maximum standard temperature value and the maximum safe temperature value in order to balance the difference between the standard temperature range and the actual test data. The weights may be configured based on the type of light source assembly 3, the use environment, and the manufacturer's recommendations. For example, for an LED light source assembly 3 used in a high temperature environment, a higher weight may be given to the maximum safe temperature value to ensure its reliability in actual use.

[0055] Finally, in S24, a weighted fusion calculation is performed based on the weights of the highest standard temperature value and the highest safe temperature value to obtain the final preset temperature threshold. This preset temperature threshold will serve as the upper temperature limit for the normal operation of the light source assembly 3. Once the temperature exceeds this threshold, the system will take corresponding heat dissipation measures, such as adjusting the fan speed, starting the heat dissipation module, etc., to ensure the stable operation and extend the service life of the light source assembly 3. Through this method of comprehensively considering the standard temperature range and actual test data, the preset temperature threshold can be set more accurately, thereby improving the overall performance and reliability of the lamp.

[0056] In step S22, the step of testing the temperature data of the light source assembly 3 under different working conditions and obtaining the safe temperature range for normal operation of the light source assembly 3 includes: S31: testing the light source assembly 3 based on different ambient temperatures, different load levels and different ventilation conditions, screening the temperature data of the normal operation of the light source assembly 3, and forming a temperature data set; S32: Analyze the temperature data set and remove abnormal values; S33: Select the maximum value and the minimum value in the temperature data set as the safe temperature range.

[0057] In 31, the light source assembly 3 is tested based on different ambient temperatures, different load levels and different ventilation conditions, and a series of experimental design methods, such as orthogonal experimental design or response surface method, can be used to ensure the comprehensiveness and accuracy of the test results. Through this method, the influence of different factors on the temperature of the light source assembly 3 can be systematically evaluated, so as to find the best combination of working conditions.

[0058] In S32, analyzing the temperature data set and removing outliers is a critical step. Outliers may be caused by accidental errors or equipment failures during the test process, so statistical methods such as box plot analysis, Z score analysis or IQR (interquartile range) method are needed to identify and remove these outliers. Ensuring the accuracy of the data set is the basis for subsequent analysis and decision-making.

[0059] In S33, the maximum and minimum values ​​in the temperature data set are selected as the safe temperature range to ensure that the light source assembly 3 can work normally under the most extreme conditions. However, in order to more accurately determine the safe temperature range, a statistical analysis method can be further used, such as calculating the mean and standard deviation of the temperature data set, and setting a reasonable safety factor based on these statistical data. For example, the safe temperature range can be set to the mean plus or minus two times the standard deviation to ensure that more than 95% of normal operation conditions are covered.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-ventilating floodlight, characterized in that: include: A shell, one end of which is provided with an opening, a receiving chamber is provided in the shell, and two opposite sides of the shell are provided with ventilation holes; A lampshade, covering the opening of the housing, wherein a light source assembly is disposed on a side of the lampshade close to the housing, the light source assembly is fixedly connected to an inner wall of the housing, and is provided with a temperature sensor for detecting the temperature of the light source assembly; A ventilation component is arranged on the outside of the shell, and the ventilation component includes a ventilation box, the ventilation box is provided with a ventilation hole connected to the ventilation hole, a movable groove is arranged in the ventilation box, an electromagnet is arranged on the top wall of the movable groove, a sliding iron block is slidably connected in the movable groove, an elastic member is fixedly connected to the end of the sliding iron block facing away from the electromagnet, and the end of the elastic member away from the sliding iron block is connected to the bottom wall of the movable groove, wherein the electromagnet is electrically connected to the temperature sensor, the sliding iron block abuts against the electromagnet, and when the sliding iron block is away from the electromagnet, the ventilation hole is opened.

2. A self-ventilating floodlight according to claim 1, characterized in that: An air intake channel is also provided in the ventilation box, and the air intake channel is connected with the movable groove and the vent, and the air intake channel is obliquely downward toward the bottom of the shell, and an end of the air intake channel away from the shell is detachably connected to a dustproof net, wherein the bottom wall of the air intake channel is provided with a waterproof step, and the waterproof step passes through the bottom end of the ventilation box.

3. A self-ventilating floodlight according to claim 2, characterized in that: A thrust bearing is also provided in the ventilation hole, a fixed portion of the thrust bearing is fixedly connected to the ventilation hole, and a rotating portion of the thrust bearing is fixedly connected to the ventilation box; A counterweight is provided at the bottom of the ventilation box, wherein when the shell rotates, the ventilation box rotates around the axis of the thrust bearing so that the air intake passage remains obliquely downward toward the bottom of the shell.

4. A self-ventilating floodlight according to claim 1, characterized in that: A hair dryer and an exhaust fan are respectively arranged in the two ventilation holes, the air outlet of the hair dryer faces the accommodating chamber, and the air outlet of the exhaust fan faces the ventilation hole; A temperature switch is also provided on an end surface of the light source assembly away from the lampshade, and the temperature switch is electrically connected to the hair dryer and the exhaust fan.

5. A self-ventilating floodlight according to claim 4, characterized in that: A circulation component is arranged in the accommodating chamber, and the circulation component includes a blower and an arc-shaped air guide plate. The blower is fixedly arranged on the inner wall of the shell, and the blower is electrically connected to the temperature switch. The air guide plate is arranged on a side of the accommodating chamber away from the blower, and the air guide plate is arranged corresponding to the air outlet of the blower, and the arc-shaped opening of the air guide plate faces the middle of the accommodating chamber.

6. The self-ventilating floodlight according to claim 1, characterized in that: The light source assembly includes a base, which is fixedly connected to the inner wall of the shell, and has a plurality of lamp cups extending from the base away from the lampshade. The side of the lamp cups facing the lampshade is coated with a reflective coating, and the side of the lamp cups facing the lampshade is fixedly provided with lamp beads.

7. A self-ventilating floodlight according to claim 6, characterized in that: A serpentine heat dissipation pipe is fixedly arranged on one side of the base away from the lampshade, the serpentine heat dissipation pipe is arranged around the lamp cup, and the serpentine heat dissipation pipe is connected to one end of the accommodating chamber away from the lampshade; A cooling fin is provided at one end of the accommodating chamber away from the lampshade, and the heating end surface of the cooling fin is attached to the inner wall of the shell. A cooling fin array is provided at one end of the shell facing away from the lampshade. The shell is provided with a plurality of slots corresponding to the cooling fin array, and the cooling fin array is plugged into the slots and fixedly connected to the shell.

8. A ventilation method for a self-ventilating floodlight, applied to the self-ventilating floodlight as claimed in any one of claims 1 to 7, characterized in that: include: Configure the preset temperature threshold for normal operation of the light source component; Acquire the current temperature value of the light source assembly and the current current value of the electromagnet through a temperature sensor, and compare the current temperature value with the preset temperature threshold; When the current temperature value is less than or equal to the preset temperature threshold, the current current value is kept unchanged, and the electromagnet continues to attract the sliding iron block to keep the vent hole closed; When the current temperature value is greater than the preset temperature threshold, the current current value is reduced, the electromagnet reduces the magnetic force to release the sliding iron block, and the elastic member pulls the sliding iron block to move away from the electromagnet to open the vent hole.

9. A self-ventilating floodlight ventilation method according to claim 8, characterized in that: The step of configuring a preset temperature threshold for normal operation of the light source assembly comprises: According to the type and power parameters of the light source assembly, a standard temperature range for normal operation of the light source assembly is obtained, and the highest value in the standard temperature range is selected as the highest standard temperature value; Testing the temperature data of the light source assembly under different working conditions, obtaining a safe temperature range for normal operation of the light source assembly, and selecting the highest value in the safe temperature range as the highest safe temperature value; respectively configuring weights for the maximum standard temperature value and the maximum safe temperature value; Based on the weights of the highest standard temperature value and the highest safety temperature value, the highest standard temperature value and the highest safety temperature value are weightedly fused and calculated to obtain the preset temperature threshold.

10. A self-ventilating floodlight ventilation method according to claim 9, characterized in that: The step of testing the temperature data of the light source assembly under different working conditions to obtain the safe temperature range for normal operation of the light source assembly comprises: Testing the light source assembly based on different ambient temperatures, different load levels and different ventilation conditions, screening the temperature data of normal operation of the light source assembly, and forming a temperature data set; Analyzing the temperature data set and removing outliers; The maximum value and the minimum value in the temperature data set are selected as the safe temperature range.

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