LED surface light source equipment with safety protection

Abstract

The present invention discloses an LED surface light source device with safety protection, which relates to the technical field of LED surface light source devices, including a bracket, a shell is arranged on the top of the bracket, a display panel is fixedly connected to the shell, the display panel seals the inside of the shell into an operation chamber, the inside of the operation chamber is fixedly connected with an LED surface light source body, a ventilation chamber is provided in the middle section of the bottom of the shell, the operation chamber is connected with the ventilation chamber through a ventilation slot, a filter is fixedly connected to the inside of the ventilation slot, an upper plate is slidably fitted on the bottom of the operation chamber, a lower cylinder is slidably fitted on the top of the ventilation chamber, and the upper plate and the lower cylinder are correspondingly distributed up and down. The LED surface light source device with safety protection can achieve the purpose of filtering and automatic cleaning at the same time by arranging structures such as a square tube, a lower tube, a vertical tube, a pull plate, an upper plate and a suction mechanism, so as to ensure the heat dissipation effect of the LED surface light source body and improve safety performance.

Description

Technical Field

[0001] The invention relates to the technical field of LED surface light source equipment, and in particular to an LED surface light source equipment with safety protection. Background Art

[0002] At outdoor construction sites, pedestrians are often reminded by setting up warning light boxes, which mainly include a front cover, a box body, and a light source component arranged in the box body. In places where the ambient light is weak, the light source component inside it emits light to illuminate the warning screen, making the warning screen eye-catching and easy to attract people's attention, thereby achieving a good reminder purpose.

[0003] In the above-mentioned light box structure, the box body and the front cover usually form a closed cavity, and the light source assembly is encapsulated in the cavity. In actual use, the light source assembly is in a working state for a long time, especially in underground or indoor environments, where the light source assembly is basically in a lighting state with uninterrupted power supply. When the light source assembly is in working state, a certain amount of heat will be generated inside the assembly. In the prior art, a heat dissipation port is usually opened on the box body, and a filter plate is provided. However, after long-term use, the filter plate is prone to clogging, resulting in the heat generated by the light source assembly being difficult to exchange to the outside of the light box and gradually accumulating. In severe cases, the light source assembly may even be burned, causing serious safety accidents.

[0004] Therefore, it is necessary to propose an LED surface light source device with safety protection to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an LED surface light source device with safety protection to solve the problem that in the prior art, a heat dissipation port is usually opened on the box body and a filter plate is provided, but after long-term use, the filter plate is prone to clogging, resulting in the heat generated by the light source component being difficult to exchange to the outside of the light box and gradually accumulating. In severe cases, the light source component may even be burned, causing serious safety accidents.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an LED surface light source device with safety protection, comprising a bracket, a shell is arranged on the top of the bracket, a display panel is fixedly connected to the shell, the display panel seals the interior of the shell as an operation chamber, the interior of the operation chamber is fixedly connected to the LED surface light source body, a ventilation chamber is opened in the middle section of the bottom of the shell, the operation chamber is connected to the ventilation chamber through a ventilation groove, a filter is fixedly connected to the interior of the ventilation groove, an upper plate is slidably fitted to the bottom of the operation chamber, and a lower cylinder is slidably fitted to the top of the ventilation chamber The upper plate and the lower tube are correspondingly distributed up and down, and a plurality of first circular holes are penetrated through the upper surface of the lower tube, a recovery bin is provided at the bottom of the running bin, and a through groove is provided at the bottom of the recovery bin close to the ventilation bin, and the through groove is connected with the ventilation bin, and a square tube is slidably connected inside the through groove, and the lower tube is connected with the square tube, and a vertical tube is slidably connected inside the recovery bin, and the vertical tube is connected with the square tube, and a pull plate is fixedly connected between the top of the vertical tube and the upper plate, and the pull plate is slidably fitted on the bottom of the running bin, and a suction mechanism cooperating with the vertical tube is arranged between the bracket and the shell.

[0007] Preferably, the suction mechanism includes a coil, a first tube body, a second tube body, a pump body and a processing box, the coil is fixedly connected to the inner wall of the operation chamber, the coil is located on the side of the operation chamber away from the display panel, the top of the coil passes through the shell, the first tube body is connected between the vertical cylinder and the coil, the pump body is fixedly connected to the bracket, the processing box is connected to the air inlet end of the pump body, and the second tube body is connected between the top of the coil and the processing box.

[0008] Preferably, an air charging bin is formed between the square tube, the vertical tube, the pull plate and the inner wall of the recovery bin, the vertical tube is connected to the air charging bin through a second circular hole, a first solenoid valve is fixedly installed on the second circular hole, and a fourth solenoid valve is fixedly installed inside the square tube.

[0009] Preferably, a spring is fixedly connected to a side of the vertical cylinder facing away from the inflation bin, and an end of the spring away from the vertical cylinder is fixedly connected to the inner wall of the recovery bin.

[0010] Preferably, a plurality of third circular holes are formed on a side of the coiled tube facing the display panel, a plurality of temperature sensors are fixedly connected to the inner wall of the operating chamber, and the plurality of temperature sensors are distributed in a one-to-one correspondence with the plurality of third circular holes.

[0011] Preferably, the ventilation slots are provided in plurality and the plurality of ventilation slots are evenly distributed.

[0012] Preferably, the filter screen is fixedly connected to the top of the ventilation slot.

[0013] Preferably, the pump body has two air outlet ends, one of which is connected to a third tube body, an end of the third tube body away from the pump body is connected to the external atmospheric environment, and a second solenoid valve is fixedly installed on the third tube body, and the other air outlet end is connected to a fourth tube body, an end of the fourth tube body away from the pump body is connected to an airbag, the airbag is fixedly connected to the top of the bracket, and a third solenoid valve is fixedly installed on the fourth tube body.

[0014] Preferably, a tilt sensor is fixedly connected to the top of the bracket.

[0015] Preferably, an outer box is fixedly connected to the bottom of the shell, the outer box is located on a side of the shell close to the display panel, the outer box is connected to the ventilation bin, and the top of the outer box is connected to a suction hopper.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention can achieve the purpose of filtering and automatic cleaning at the same time by setting structures such as square tube, lower tube, vertical tube, pull plate, upper plate and suction mechanism, ensure the heat dissipation effect of the LED surface light source body, and improve safety performance;

[0018] 2. During the cleaning process, the upper plate and the lower tube will only block a single ventilation slot, without affecting the external air entering the shell through other ventilation slots, thus ensuring ventilation efficiency;

[0019] 3. When the pump body sucks the impurities accumulated in the lower half of the ventilation slot through the first circular hole, the suction wind force is also concentrated in the processing space, and will not interfere with the airflow entering the shell;

[0020] 4. The pump body extracts heat through the second tube body, the coil and the third circular hole at the corresponding position to improve the pertinence of heat dissipation;

[0021] 5. The coiled tube, the third circular hole and other structures are set up to ensure that the heat generated by the LED surface light source body is sucked away at the first time, and the heat flow will not affect other electronic components, thereby improving the efficiency of heat dissipation;

[0022] 6. Multiple third circular holes, temperature sensors and other structures are set up, which can be opened according to the heating position, and not all third circular holes are opened directly, so as to improve the utilization efficiency of the pump body and ensure the suction effect;

[0023] 7. Ventilation bins, outer boxes, suction hoppers and other structures are provided, and the opening direction of the suction hoppers can be used to suck dust from the display panel, thereby achieving the purpose of heat dissipation and dust removal;

[0024] 8. The pump body sucks mosquitoes through the outer box, suction bucket and other structures, and transports them to the inside of the processing box for crushing through the lower tube, square tube and other structures, and uses the light source provided by the LED surface light source body to kill mosquitoes;

[0025] 9. The pump body inflates the airbag through the fourth tube body to expand it, thereby unloading and buffering the force when the bracket falls over, thereby improving the safety performance of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the LED surface light source device with safety protection of the present invention.

[0027] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure in the middle.

[0028] Figure 3 It is a schematic diagram of the structure of the shell, display panel, outer box and suction bucket of the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the housing, display panel and LED surface light source body of the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the shell, the coil and the third circular hole of the present invention.

[0031] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C in the middle.

[0032] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure at point D in the middle.

[0033] Figure 8 For the present invention Figure 5 Enlarged schematic diagram of the structure at point E in the middle.

[0034] Fig. 9 It is a schematic diagram of the shell, the first tube body and the pull plate structure of the present invention.

[0035] Fig.10 It is a schematic diagram of the shell, square tube, vertical tube and pull plate structure of the present invention.

[0036] Fig.11 It is a schematic diagram of the structure of the shell, ventilation slots and recovery bin of the present invention.

[0037] Fig.12 It is a schematic diagram of the structure of the lower tube, upper plate and vertical tube of the present invention.

[0038] In the figure: 1. bracket; 2. shell; 3. operation chamber; 4. display panel; 5. LED surface light source body; 6. ventilation chamber; 7. ventilation slot; 8. filter; 9. through slot; 10. square tube; 11. lower tube; 12. first circular hole; 13. vertical tube; 14. recovery chamber; 15. charging chamber; 16. second circular hole; 17. first solenoid valve; 18. pull plate; 19. upper plate; 20. outer box; 21. suction bucket; 22. snake pipe; 23. first tube body; 24. third circular hole; 25. temperature sensor; 26. second tube body; 27. pump body; 28. third tube body; 29. ​​second solenoid valve; 30. fourth tube body; 31. third solenoid valve; 32. airbag; 33. tilt sensor; 34. processing box; 35. spring; 36. fourth solenoid valve. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clarify the technical solutions in the embodiments of the present invention; it is clearly described in detail. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention provides Figure 1-Figure 12 The LED surface light source device with safety protection shown in the figure includes a bracket 1, a shell 2 is arranged on the top of the bracket 1, the bracket 1 includes a support foot, a support rod and other structures, and the support rod has a lifting function, and the shell 2 can be set on the bracket 1 through a rotating frame, and its tilt angle can be adjusted to improve the applicability of the overall device. A display panel 4 is fixedly connected to the shell 2, and the display panel 4 seals the interior of the shell 2 into an operating chamber 3, and the interior of the operating chamber 3 is fixedly connected to an LED surface light source body 5, and the shell 2 protects the LED surface light source body 5. Specifically, the display panel 4 is provided with words such as "Attention to safety", "Caution", and "Construction in progress", which can be adjusted according to specific usage conditions; when the LED surface light source body 5 is running, the light source it generates will illuminate the display panel 4, so that the device has a reminder effect.

[0041] Considering the heat dissipation effect inside the shell 2, a ventilation bin 6 is provided in the middle section of the bottom of the shell 2, and the operation bin 3 is connected to the ventilation bin 6 through a ventilation slot 7. The ventilation slot 7 is provided in multiple numbers, and the multiple ventilation slots 7 are evenly distributed. The bottom of the shell 2 is fixedly connected to an outer box 20, which is located on the side of the shell 2 close to the display panel 4, and the outer box 20 is connected to the ventilation bin 6. The top of the outer box 20 is connected to a suction hopper 21, and the suction hopper 21 is provided to expand the suction area; and the suction hopper 21 opens upward, and the dust on the display panel 4 can be sucked and cleaned.

[0042] In order to prevent dust and other impurities in the external air from entering the interior of the housing 2, a filter 8 is fixedly connected to the interior of the ventilation slot 7, and the filter 8 is fixedly connected to the top of the ventilation slot 7. The filter 8 is arranged at the top of the ventilation slot 7, so that impurities can be attached and accumulated in the lower half of the ventilation slot 7, which is convenient for subsequent cleaning.

[0043] Specifically, when external air enters the interior of the operating chamber 3 through the ventilation slots 7, the filter 8 will filter the impurities in the external air, and the impurities will be accumulated in the lower half of the ventilation slots 7 under the action of suction.

[0044] In order to realize automatic cleaning of impurities in the ventilation slot 7, an upper plate 19 is slidably fitted on the bottom of the operating bin 3, and a lower cylinder 11 is slidably fitted on the top of the ventilation bin 6. The upper plate 19 and the lower cylinder 11 are correspondingly distributed up and down, and the length of the upper plate 19 and the length of the lower cylinder 11 are slightly longer than the length of the ventilation slot 7. When the upper plate 19 and the lower cylinder 11 slide to the upper and lower ends of one of the ventilation slots 7 respectively, a processing space can be formed between the upper plate 19, the ventilation slot 7, and the lower cylinder 11; a plurality of first circular holes 12 are opened through the upper surface of the lower cylinder 11, and impurities are sucked out through the first circular holes 12;

[0045] A recovery bin 14 is provided at the bottom of the operation bin 3. A through slot 9 is provided at the bottom of the recovery bin 14 near the ventilation bin 6. The through slot 9 is connected to the ventilation bin 6. A square tube 10 is slidably connected inside the through slot 9. The lower tube 11 is connected to the square tube 10. A vertical tube 13 is slidably connected inside the recovery bin 14. The vertical tube 13 is connected to the square tube 10. A pull plate 18 is fixedly connected between the top of the vertical tube 13 and the upper plate 19. The pull plate 18 slides and fits the bottom of the operation bin 3. The width of the pull plate 18 is greater than the width of the recovery bin 14, so as to cover the top of the recovery bin 14. When in use, rubber pads may be provided between the through slot 9 and the square tube 10, between the pull plate 18 and the top of the recovery bin 14, and between the vertical tube 13 and the recovery bin 14 to reduce wear and improve sealing.

[0046] In order to realize the synchronous movement of the upper plate 19, the lower tube 11 and other structures, the square tube 10, the vertical tube 13, the pull plate 18 and the inner wall of the recovery bin 14 form a gas filling bin 15, and the vertical tube 13 is connected to the gas filling bin 15 through the second circular hole 16, and the first electromagnetic valve 17 is fixedly installed on the second circular hole 16. When the first electromagnetic valve 17 is opened, the vertical tube 13 is connected to the gas filling bin 15. A fourth electromagnetic valve 36 is fixedly installed inside the square tube 10.

[0047] A suction mechanism that cooperates with the vertical tube 13 is arranged between the bracket 1 and the shell 2. The suction mechanism includes a coil 22, a first tube body 23, a second tube body 26, a pump body 27 and a processing box 34. A filtering device is arranged inside the processing box 34, including a filter plate and other structures, which can filter impurities; a crushing device can also be arranged, including a crushing knife and other structures, which can crush the sucked mosquitoes; in addition, the first tube body 23 and the second tube body 26 are retractable. The coil 22 is fixedly connected to the inner wall of the operation chamber 3, and the coil 22 is located on the side of the operation chamber 3 away from the display panel 4. The top of the coil 22 passes through the shell 2, and the first tube body 23 is connected between the vertical tube 13 and the coil 22. The pump body 27 is fixedly connected to the bracket 1, and the processing box 34 is connected to the air inlet end of the pump body 27, and the second tube body 26 is connected between the top of the coil 22 and the processing box 34.

[0048] Considering that the heat generation at different positions of the LED surface light source body 5 is inconsistent, in order to ensure the pertinence and effect of heat dissipation, a plurality of third circular holes 24 are opened on the side of the coil 22 facing the display panel 4. In specific use, the structure of the coil 22 and the position of the third circular holes 24 can be adjusted according to the characteristics of the heating position of the LED surface light source body 5 to ensure that the third circular holes 24 correspond to the position that is easy to heat and has high heat.

[0049] A plurality of temperature sensors 25 are fixedly connected to the inner wall of the operation chamber 3 . The plurality of temperature sensors 25 are distributed in a one-to-one correspondence with the plurality of third circular holes 24 . An electromagnetic control valve (not shown in the figure) is arranged inside the third circular hole 24 .

[0050] Specifically, a controller can be set up to connect between the electromagnetic control valve and the temperature sensor 25 at the same position. When the temperature sensor 25 detects that the regional temperature exceeds the set threshold, this information is transmitted to the controller, and the controller controls the electromagnetic control valve to open. The controller and its control principle are common existing technologies and will not be elaborated here.

[0051] During operation, when the LED surface light source body 5 generates heat during operation, the temperature sensor 25 corresponding to the heat generation position opens the electromagnetic control valve in the third circular hole 24 at the same position through the controller, and the pump body 27 absorbs the heat through the second tube body 26, the coil 22 and the third circular hole 24 at the corresponding position, thereby improving the targeted heat dissipation.

[0052] At the same time, the coil 22, the third circular hole 24 and other structures can ensure that the heat generated by the LED surface light source body 5 is sucked away at the first time, and the heat flow will not affect other electronic components, thereby improving the efficiency of heat dissipation;

[0053] By providing a plurality of third circular holes 24 , temperature sensors 25 and other structures, they can be opened specifically according to the heating positions, and not all the third circular holes 24 are directly opened, thereby improving the utilization efficiency of the pump body 27 and ensuring the suction effect.

[0054] During this process, external air will be supplied into the operation chamber 3 through the ventilation slot 7 to achieve air circulation and improve the safety performance of the LED surface light source body 5. The filter 8 will filter impurities in the external air and accumulate them in the lower half of the ventilation slot 7 under the action of suction.

[0055] Furthermore, when it is necessary to clean the impurities inside the ventilation slot 7, the first solenoid valve 17 is opened, and the pump body 27 sucks the gas inside the gas filling chamber 15 through the second tube body 26, the coil 22, the first tube body 23, the vertical tube 13 and the second circular hole 16, so that the vertical tube 13 moves toward the ventilation chamber 6, and with the cooperation of the square tube 10 and the pull plate 18, the upper plate 19 and the lower tube 11 move synchronously;

[0056] The upper plate 19 and the lower tube 11 are respectively located at the upper and lower ends of the ventilation slot 7 near the air filling chamber 15, so that a processing space is formed between the upper plate 19, the ventilation slot 7 and the lower tube 11. Then the first electromagnetic valve 17 is closed and the fourth electromagnetic valve 36 is opened. The pump body 27 sucks the impurities accumulated in the lower half of the ventilation slot 7 through the second tube body 26, the coil 22, the first tube body 23, the vertical tube 13, the square tube 10, the lower tube 11 and the first circular hole 12, so as to automatically clean the impurities;

[0057] The impurities are filtered inside the processing box 34 , and the filtered gas is discharged from the third tube 28 .

[0058] Further, after the cleaning of the single ventilation slot 7 is completed, the fourth solenoid valve 36 is closed again, and the first solenoid valve 17 is opened, and the pump body 27 continues to suck the gas inside the inflation bin 15 through the second tube body 26, the coil 22, the first tube body 23, the vertical tube 13 and the second circular hole 16, so that the vertical tube 13 continues to move toward the ventilation bin 6, and with the cooperation of the square tube 10 and the pull plate 18, the upper plate 19 and the lower tube 11 continue to move synchronously;

[0059] The upper plate 19 and the lower tube 11 are respectively located at the upper and lower ends of the next ventilation slot 7, and then the impurities inside the ventilation slot 7 are cleaned;

[0060] According to the above steps, all impurities in the ventilation slots 7 are cleaned to ensure the filtering and ventilation effects of the filter screen 8.

[0061] The present invention can achieve the purpose of filtering and automatic cleaning at the same time by arranging structures such as square tube 10, lower tube 11, vertical tube 13, pull plate 18, upper plate 19 and suction mechanism, ensure the heat dissipation effect of LED surface light source body 5 and improve safety performance.

[0062] During the above cleaning process, the upper plate 19 and the lower tube 11 only block a single ventilation slot 7, and do not affect the external air from entering the interior of the housing 2 through other ventilation slots 7, thereby ensuring ventilation efficiency;

[0063] When the pump body 27 sucks the impurities accumulated in the lower half of the ventilation slot 7 through the first circular hole 12 , the suction wind force is also concentrated in the processing space and will not interfere with the airflow entering the shell 2 .

[0064] Considering that dust and other impurities are easily attached to the display panel 4 during the use of the device, a ventilation chamber 6, an outer box 20, a suction hopper 21 and other structures are provided, and the opening direction of the suction hopper 21 can suck the dust on the display panel 4, thereby achieving the purpose of heat dissipation and dust removal;

[0065] In addition, considering that mosquitoes and the like will approach the display panel 4 when the LED surface light source body 5 emits bright light, the pump body 27 sucks the mosquitoes through the outer box 20, the suction bucket 21 and other structures, and transports them to the interior of the processing box 34 for crushing through the lower tube 11, the square tube 10 and other structures, thereby utilizing the light source provided by the LED surface light source body 5 to kill mosquitoes.

[0066] In order to achieve structural reset of the vertical cylinder 13, square cylinder 10, pull plate 18, upper plate 19 and lower cylinder 11, a spring 35 is fixedly connected to the side of the vertical cylinder 13 facing away from the inflation bin 15, and the end of the spring 35 away from the vertical cylinder 13 is fixedly connected to the inner wall of the recovery bin 14.

[0067] Specifically, after the device has completed heat dissipation, the first solenoid valve 17 is opened, and external gas can be replenished into the interior of the inflation chamber 15. The reset elastic force of the spring 35 will assist the vertical tube 13, square tube 10, pull plate 18, upper plate 19 and lower tube 11 in resetting the structures for the next use.

[0068] The pump body 27 has two air outlet ends, one of which is connected to the third tube body 28. The end of the third tube body 28 away from the pump body 27 is connected to the external atmospheric environment. The second solenoid valve 29 is fixedly installed on the third tube body 28. In the normal heat dissipation and automatic cleaning stage, the third tube body 28 is used and the second solenoid valve 29 is opened.

[0069] The other air outlet end is connected to the fourth tube body 30, and the end of the fourth tube body 30 away from the pump body 27 is connected to the airbag 32, which is fixedly connected to the top of the bracket 1, and the third solenoid valve 31 is fixedly installed on the fourth tube body 30. When in use, the airbags 32 are arranged at multiple positions on the top of the bracket 1. In the normal use state, the airbags 32 shrink and do not affect the normal use of the equipment; in the protection state, the airbags 32 expand and protect the equipment.

[0070] A tilt sensor 33 is fixedly connected to the top of the bracket 1. Specifically, a controller can be set to connect between the second solenoid valve 29, the third solenoid valve 31 and the tilt sensor 33. When the tilt sensor 33 detects that the tilt angle of the bracket 1 exceeds the set threshold, the information is transmitted to the controller. The controller controls the second solenoid valve 29 to close and the third solenoid valve 31 to open. The pump body 27 inflates the airbag 32 through the fourth tube body 30 to make it expand and become larger, thereby unloading force and buffering when the bracket 1 falls, thereby improving the safety performance of the overall equipment. The controller and its control principle are existing common technologies and are not elaborated here.

[0071] Working principle: When the LED surface light source body 5 generates heat during operation, the temperature sensor 25 corresponding to the heat generation position opens the electromagnetic control valve in the third circular hole 24 at the same position through the controller, and the pump body 27 absorbs the heat through the second tube body 26, the coil 22 and the third circular hole 24 at the corresponding position; in this process, external air will be replenished into the interior of the operating chamber 3 through the ventilation groove 7 to achieve air circulation and improve the safety performance of the LED surface light source body 5.

[0072] The filter 8 will filter the impurities in the external air, and the impurities will be accumulated in the lower half of the ventilation slot 7 under the action of suction.

[0073] When it is necessary to clean the impurities, open the first solenoid valve 17, and the pump body 27 sucks the gas inside the air filling bin 15 through the second tube body 26, the coil 22, the first tube body 23, the vertical tube 13 and the second circular hole 16, so that the vertical tube 13 moves toward the ventilation bin 6, and with the cooperation of the square tube 10 and the pull plate 18, the upper plate 19 and the lower tube 11 move synchronously, and are respectively located at the upper and lower ends of the ventilation slot 7 close to one side of the air filling bin 15, so that a processing space is formed between the upper plate 19, the ventilation slot 7 and the lower tube 11. Then close the first solenoid valve 17, open the fourth solenoid valve 36, and the pump body 27 sucks the impurities accumulated in the lower half of the ventilation slot 7 through the second tube body 26, the coil 22, the first tube body 23, the vertical tube 13, the square tube 10, the lower tube 11 and the first circular hole 12, so as to realize automatic cleaning of the impurities;

[0074] The impurities are filtered inside the processing box 34 , and the filtered gas is discharged from the third tube 28 .

[0075] After the cleaning is completed, the fourth solenoid valve 36 is closed again, and the first solenoid valve 17 is opened. The pump body 27 sucks the gas inside the gas filling chamber 15 through the second tube body 26, the coil 22, the first tube body 23, the vertical tube 13 and the second circular hole 16, so that the vertical tube 13 continues to move toward the ventilation chamber 6, and with the cooperation of the square tube 10 and the pull plate 18, the upper plate 19 and the lower tube 11 continue to move synchronously and are respectively located at the upper and lower ends of the next ventilation slot 7, completing the cleaning of impurities inside the ventilation slot 7;

[0076] According to the above steps, the impurities inside all the ventilation slots 7 are cleaned. In the above cleaning steps, the upper plate 19 and the lower tube 11 will only block a single ventilation slot 7, and will not affect the external air from entering the shell 2 through other ventilation slots 7, thereby ensuring the ventilation efficiency; and when the pump body 27 sucks the impurities accumulated in the lower half of the ventilation slot 7 through the first circular hole 12, the suction wind force is also concentrated in the processing space, and will not interfere with the airflow entering the shell 2.

[0077] After the device has finished cooling, the restoring force of the spring 35 will assist the vertical tube 13, the square tube 10, the pull plate 18, the upper plate 19 and the lower tube 11 in restoring the structure.

[0078] When the bracket 1 topples over, the inclination sensor 33 detects that the inclination angle of the bracket 1 exceeds the set threshold and transmits this information to the controller. The controller controls the second solenoid valve 29 to close and the third solenoid valve 31 to open. The pump body 27 inflates the airbag 32 through the fourth tube body 30 to make it expand and enlarge, thereby unloading force and buffering when the bracket 1 topples over, thereby improving the safety performance of the overall equipment.

Claims

1. An LED surface light source device with safety protection, comprising a bracket (1), characterized in that: A shell (2) is arranged on the top of the bracket (1), a display panel (4) is fixedly connected to the shell (2), the display panel (4) seals the interior of the shell (2) into an operating chamber (3), the interior of the operating chamber (3) is fixedly connected to an LED surface light source body (5), a ventilation chamber (6) is provided in the middle section of the bottom of the shell (2), the operating chamber (3) is connected to the ventilation chamber (6) via a ventilation slot (7), a filter screen (8) is fixedly connected to the interior of the ventilation slot (7), an upper plate (19) is slidably fitted on the bottom of the operating chamber (3), a lower tube (11) is slidably fitted on the top of the ventilation chamber (6), the upper plate (19) and the lower tube (11) are arranged correspondingly up and down, and the upper surface of the lower tube (11) is penetrated by a A plurality of first circular holes (12); a recovery bin (14) is provided at the bottom of the operating bin (3); a through groove (9) is provided at the bottom of the recovery bin (14) on the side close to the ventilation bin (6); the through groove (9) is connected to the ventilation bin (6); a square tube (10) is slidably connected inside the through groove (9); the lower tube (11) is connected to the square tube (10); a vertical tube (13) is slidably connected inside the recovery bin (14); the vertical tube (13) is connected to the square tube (10); a pull plate (18) is fixedly connected between the top of the vertical tube (13) and the upper plate (19); the pull plate (18) is slidably fitted on the bottom of the operating bin (3); and a suction mechanism cooperating with the vertical tube (13) is provided between the bracket (1) and the shell (2).

2. The LED surface light source device with safety protection according to claim 1, characterized in that: The suction mechanism comprises a coil (22), a first tube body (23), a second tube body (26), a pump body (27) and a processing box (34); the coil (22) is fixedly connected to the inner wall of the operation chamber (3); the coil (22) is located on a side of the operation chamber (3) away from the display panel (4); the top end of the coil (22) passes through the housing (2); the first tube body (23) is connected between the vertical cylinder (13) and the coil (22); the pump body (27) is fixedly connected to the bracket (1); the processing box (34) is connected to the air inlet end of the pump body (27); and the second tube body (26) is connected between the top end of the coil (22) and the processing box (34).

3. The LED surface light source device with safety protection according to claim 2, characterized in that: An air charging chamber (15) is formed between the square tube (10), the vertical tube (13), the pull plate (18) and the inner wall of the recovery chamber (14); the vertical tube (13) is connected to the air charging chamber (15) via a second circular hole (16); a first electromagnetic valve (17) is fixedly mounted on the second circular hole (16); and a fourth electromagnetic valve (36) is fixedly mounted inside the square tube (10).

4. The LED surface light source device with safety protection according to claim 3, characterized in that: A spring (35) is fixedly connected to a side of the vertical cylinder (13) facing away from the inflation bin (15), and an end of the spring (35) away from the vertical cylinder (13) is fixedly connected to the inner wall of the recovery bin (14).

5. The LED surface light source device with safety protection according to claim 4, characterized in that: A plurality of third circular holes (24) are formed on a side of the coiled tube (22) facing the display panel (4), a plurality of temperature sensors (25) are fixedly connected to the inner wall of the operating chamber (3), and the plurality of temperature sensors (25) are distributed in a one-to-one correspondence with the plurality of third circular holes (24).

6. The LED surface light source device with safety protection according to claim 1, characterized in that: The ventilation slots (7) are arranged in a plurality, and the plurality of ventilation slots (7) are evenly distributed.

7. The LED surface light source device with safety protection according to claim 1, characterized in that: The filter screen (8) is fixedly connected to the top of the ventilation slot (7).

8. The LED surface light source device with safety protection according to claim 2, characterized in that: The pump body (27) has two air outlet ends, one of which is connected to a third tube body (28), one end of the third tube body (28) away from the pump body (27) is connected to the external atmospheric environment, a second solenoid valve (29) is fixedly mounted on the third tube body (28), and the other air outlet end is connected to a fourth tube body (30), one end of the fourth tube body (30) away from the pump body (27) is connected to an air bag (32), the air bag (32) is fixedly connected to the top of the bracket (1), and a third solenoid valve (31) is fixedly mounted on the fourth tube body (30).

9. The LED surface light source device with safety protection according to claim 8, characterized in that: A tilt sensor (33) is fixedly connected to the top of the bracket (1).

10. The LED surface light source device with safety protection according to claim 1, characterized in that: An outer box (20) is fixedly connected to the bottom of the shell (2); the outer box (20) is located on a side of the shell (2) close to the display panel (4); the outer box (20) is connected to the ventilation bin (6); and the top of the outer box (20) is connected to a suction hopper (21).

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