LED explosion-proof lamp

Abstract

The application relates to the field of explosion-proof lamps, in particular to an LED explosion-proof lamp, which comprises an explosion-proof lamp shell, a light source cavity arranged in the explosion-proof shell, a light source plate arranged in the light source cavity, and a plurality of heat dissipation fins fixedly connected in an annular array at the top end of the explosion-proof lamp shell; a power supply shell, a power supply cavity and a wiring cavity arranged in the power supply shell; and a dust concentration detection mechanism used for detecting the dust concentration in air; the dust concentration detection mechanism, the potentiometer and the processor are arranged; the potentiometer adjusts the brightness of the light source plate according to the dust concentration detected by the dust concentration detection mechanism; when the dust concentration is relatively large, the brightness of the explosion-proof lamp is increased, the brightness of the working environment is improved, the staff can conveniently observe the environment; when the dust concentration is relatively small, the brightness of the explosion-proof lamp is reduced, the power consumption is reduced, the heat generation of the explosion-proof lamp is reduced, and the service life of the explosion-proof lamp is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of explosion-proof lamps, in particular to a LED explosion-proof lamp. BACKGROUND

[0002] The design and material selection of explosion-proof street lamps are specially considered to ensure safe use in flammable and explosive environments, and they usually have multiple functions such as explosion-proof, corrosion-proof, and waterproof, which can ensure the normal operation of the lighting system in harsh environmental conditions.

[0003] For example, the application number CN201711298689.0 discloses a lamp wire-free connection structure and an explosion-proof LED lamp, which comprises an upper wiring member capable of being electrically connected with the power line led out from the upper shell of the lamp, a lower wiring member capable of being electrically connected with the electric wire led out from the lower shell of the lamp, and the upper wiring member and the lower wiring member are electrically connected in a plug-in manner, and the upper wiring member and the lower wiring member realize wire-free connection, and the upper wiring member is provided with a quick disassembly structure capable of being detachably connected with the upper shell of the lamp.

[0004] The existing explosion-proof lamp still has the following shortcomings in actual use: for example, when the explosion-proof lamp is used in a coal mine environment, the lighting effect of the explosion-proof lamp is easily affected by the dust content in the coal mine. When the dust content in the air is large, the light emitted by the explosion-proof lamp is easily blocked, reducing the lighting brightness, and vice versa. The brightness of the existing explosion-proof lamp is usually adjusted manually, which is not convenient for automatically adjusting the brightness of the explosion-proof lamp according to the dust content in the environment.

[0005] Therefore, the present application provides a LED explosion-proof lamp to solve the above problems. SUMMARY

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a LED explosion-proof lamp, comprising:

[0007] An explosion-proof lamp shell is provided with a light source cavity in the explosion-proof shell, a light source plate is arranged in the light source cavity, and a plurality of heat dissipation fins are fixedly connected in an annular array at the top end of the explosion-proof lamp shell.

[0008] A power supply shell is provided with a power supply cavity and a wiring cavity in the power supply shell.

[0009] A dust concentration detection mechanism is used to detect the dust concentration in the air.

[0010] A potentiometer is arranged in the power supply shell, the power supply shell is internally provided with a processor, the processor is electrically connected with the dust concentration detection mechanism, the processor is used for receiving concentration data detected by the dust concentration detection mechanism, and concentration values are generated by processing different concentration data, the processor generates corresponding control signals according to different concentration values, and the potentiometer adjusts the size of the circuit resistance based on the control signals.

[0011] Preferably, the dust concentration detection mechanism comprises:

[0012] Two detection tubes are arranged at the top end of the explosion-proof lamp shell.

[0013] Two laser dust sensors are arranged in the two detection tubes respectively, used for acquiring concentration signals in the detection tubes and sending the concentration signals to the processor.

[0014] The air suction mechanism is used for driving the detection tube to suck in and discharge air.

[0015] Preferably, the air suction mechanism comprises:

[0016] Two flow sensors are arranged in the two detection tubes respectively, used for acquiring flow signals in the detection tubes and sending the flow signals to the processor.

[0017] Preferably, two ends of the two detection tubes are fixedly connected with a plurality of heat dissipation fins on the path, and the temperature of the explosion-proof lamp shell is transmitted to the detection tube through the heat dissipation fins to heat the detection tube.

[0018] Preferably, the air suction mechanism comprises:

[0019] A machine shell is fixed to the outside of the explosion-proof lamp shell, a partition plate is fixedly connected in the machine shell, a mounting pipe is fixedly connected between the partition plate and the machine shell, and a fan blade is rotatably connected in the mounting pipe.

[0020] A first servo motor is used for driving the fan blade to rotate.

[0021] Two first communication pipes are connected with the detection tubes at one end and rotatably connected with the end of the mounting pipe at the other end.

[0022] Preferably, the air suction mechanism comprises:

[0023] An annular air pipe is fixed to the end of the heat dissipation fin through a mounting ring, and a plurality of exhaust pipes are fixedly connected to the outer wall of the annular air pipe at the middle positions of the two heat dissipation fins.

[0024] An air inlet pipe is fixedly communicated with the annular air pipe at one end, and a second communicating pipe is connected at the other end, the other end of the second communicating pipe is penetratingly communicated with the casing and the mounting pipe, and the casing and the mounting pipe are rotatably connected.

[0025] Preferably, further comprising:

[0026] A sealing disc is rotatably connected in the mounting pipe, and a first air hole matched with the first communicating pipe and a second air hole matched with the second communicating pipe are formed in the side wall of the sealing disc.

[0027] A rotary driving mechanism is used to drive the sealing disc to rotate to switch the communicating state of the first air hole and the second air hole.

[0028] Preferably, the rotary driving mechanism comprises:

[0029] A first gear is rotatably connected with the mounting pipe at the inner ring of the first gear penetratingly communicated with the mounting pipe, and the inner ring of the first gear is fixedly connected with the outer ring wall of the sealing disc.

[0030] A second gear is engaged with the first gear.

[0031] A second servo motor is used to drive the second gear to rotate.

[0032] Preferably, further comprising:

[0033] A first mounting cavity and a second mounting cavity are formed in the detecting pipe.

[0034] A fixed seat is fixedly connected with the outer side wall of the detecting pipe, a fixed plate is fixedly connected with the top end of the fixed seat through bolts, and the laser dust sensor and the flow sensor are respectively arranged in the first mounting cavity and the second mounting cavity and fixedly connected with the fixed plate.

[0035] Preferably, further comprising two second filter screens, the two second filter screens are fixedly connected with the side wall of the sealing disc at positions corresponding to the two first air holes.

[0036] Compared with the prior art, the present application has the following beneficial effects:

[0037] Firstly, the dust concentration detection mechanism, the potentiometer and the processor are arranged, the potentiometer adjusts the brightness of the light source plate according to the dust concentration detected by the dust concentration detection mechanism, the brightness of the explosion-proof lamp is increased when the dust concentration is large, the brightness of the working environment is improved, the staff can observe the environment conveniently, the brightness of the explosion-proof lamp is reduced when the dust concentration is small, the power consumption is reduced, the heat generation of the explosion-proof lamp is reduced, and the service life of the explosion-proof lamp is improved.

[0038] Two, the present application can obtain two groups of concentration data by setting two detection tubes, a laser dust sensor and a flow sensor, and the concentration value is obtained by processing the two groups of concentration parameters by the average method, thereby improving the detection result.

[0039] Three, the present application is connected with the heat dissipation fin, so that the temperature of the explosion-proof lamp shell is transmitted to the detection tube through the heat dissipation fin, thereby heating the detection tube, reducing the relative humidity and inhibiting the condensation, thereby reducing the interference of water vapor on the laser dust sensor and further improving the precision of detecting dust concentration.

[0040] Four, the present application is connected with the heat dissipation fin, so that the temperature of the explosion-proof lamp shell is transmitted to the detection tube through the heat dissipation fin, thereby heating the detection tube, reducing the relative humidity and inhibiting the condensation, thereby reducing the interference of water vapor on the laser dust sensor and further improving the precision of detecting dust concentration.

[0041] Five, by setting the fixing seat and the fixing plate, since the fixing plate is fixed on the fixing seat by bolts, when the laser dust sensor and the flow sensor are damaged or need to be cleaned, it is convenient to disassemble and install. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0043] Figure 2 It is a sectional view of the explosion-proof lamp shell and the power supply shell of the present application;

[0044] Figure 3 It is an explosion view of the explosion-proof lamp shell of the present application;

[0045] Figure 4 It is a connection diagram of the machine shell and the explosion-proof bottom plate in the present application;

[0046] Figure 5 It is a connection diagram of the detection tube and the fixing seat in the present application;

[0047] Figure 6 It is a connection diagram of the ring-shaped air pipe and the exhaust pipe of the present application;

[0048] Figure 7 It is a sectional view of the machine shell in the present application;

[0049] Figure 8 It is a connection diagram of the mounting pipe and the fan in the present application;

[0050] Figure 9 It is a connection diagram of the mounting pipe and the sealing disc in the present application;

[0051] Figure 10The connection diagram of the sealing disc and the fan blade in the application.

[0052] In the figure: explosion-proof bottom plate 1, tempered glass 2, explosion-proof panel 3, light source cavity 301, heat dissipation fin 302, light source plate 4, explosion-proof shell 5, power supply cavity 501, rear cover 6, wiring cavity 601, wiring cover 7, potentiometer 8, detection tube 9, first mounting cavity 901, second mounting cavity 902, fixing seat 10, fixing plate 11, laser dust sensor 12, flow sensor 13, filter grid 14, machine shell 15, partition plate 16, second servo motor 17, mounting tube 18, first filter screen 19, fan blade 20, first servo motor 21, first communication tube 22, annular air pipe 23, exhaust pipe 24, air inlet pipe 25, second communication tube 26, sealing disc 27, first air hole 2701, second filter screen 2702, second air hole 2703, first gear 28, second gear 29, processor 30. DETAILED DESCRIPTION

[0053] The following description is used to disclose the application so that those skilled in the art can implement the application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art.

[0054] As shown in the LED explosion-proof lamp, comprising: Figures 1 to 10

[0055] Explosion-proof lamp shell, explosion-proof shell is provided with light source cavity 301, light source cavity 301 is provided with light source plate 4, explosion-proof lamp shell top annular array fixedly connected with a plurality of heat dissipation fins 302;

[0056] Power shell, power shell is provided with power supply cavity 501 and wiring cavity 601;

[0057] Dust concentration detection mechanism, dust concentration detection mechanism is used for detecting dust concentration in the air;

[0058] Potentiometer 8, potentiometer 8 is arranged in the power shell, the power shell is provided with processor 30, the processor 30 is electrically connected with the dust concentration detection mechanism, the processor 30 is used for receiving the concentration data detected by the dust concentration detection mechanism, and the concentration value is generated according to the concentration data of different dust, the processor 30 generates corresponding control signal according to different concentration value, and the potentiometer 8 adjusts the size of circuit resistance based on the control signal, so as to adjust the size of circuit output current;

[0059] Wherein the processor comprises the following configuration:

[0060] Data receiving unit, receiving the concentration data detected by the dust concentration detection mechanism;

[0061] Data processing unit, the concentration data is processed and the concentration value is generated; ​

[0062] The first control unit generates a corresponding control signal according to different concentration values to control the size of the current output by the potentiometer 8.

[0063] Specifically, in the prior art, the lighting effect of the explosion-proof lamp is easily affected by the dust content in the coal mine during use in the coal mine environment. When the dust content in the air is large, the light emitted by the explosion-proof lamp is easily blocked, reducing the brightness. Conversely, the light blocking of the explosion-proof lamp is reduced. However, the brightness of the existing explosion-proof lamp is usually adjusted manually, which is not convenient for automatically adjusting the brightness of the explosion-proof lamp according to the dust content in the environment. The technical solution can solve the above problems, and the specific operation is as follows:

[0064] During use of the explosion-proof lamp, the dust concentration detection mechanism detects the dust concentration in the environment every certain period of time (such as once every 1 hour), and generates dust concentration data. Then the dust concentration detection mechanism sends the dust concentration data to the processor 30. The data receiving unit in the processor 30 receives the concentration data detected by the dust concentration detection mechanism. After receiving the concentration data, the data processing unit in the processor 30 processes the concentration data and generates a concentration value. Then, according to different concentration values, the first control unit in the processor 30 generates a corresponding control signal (for example, a first PWM dimming signal when the dust concentration value is large, and a second PWM dimming signal when the dust concentration value is small). The potentiometer 8 adjusts (increases or decreases) the resistance according to the corresponding control signal (first PWM dimming signal or second PWM dimming signal) to adjust the size of the output current of the circuit, thereby adjusting the brightness of the light source board 4. When the dust concentration is large, the brightness of the explosion-proof lamp is increased to improve the brightness of the working environment, making it easier for workers to observe the environment. When the dust concentration is small, the brightness of the explosion-proof lamp is reduced to reduce power consumption, thereby reducing the heat generation of the explosion-proof lamp and improving the service life of the explosion-proof lamp.

[0065] As a further embodiment of the invention, the dust concentration detection mechanism comprises:

[0066] Two detection tubes 9 are arranged at the top end of the explosion-proof lamp shell, and the two ends of the two detection tubes 9 are fixedly connected with the plurality of heat dissipation fins 302 after penetrating through the plurality of heat dissipation fins 302 on the path;

[0067] Two laser dust sensors 12 are arranged in the two detection tubes 9 respectively, for acquiring the concentration signal in the detection tube 9 and sending the concentration signal to the processor 30;

[0068] Two flow sensors 13 are arranged in the two detection tubes 9 respectively, for acquiring the flow signal in the detection tube 9 and sending the flow signal to the processor 30;

[0069] The air suction mechanism is used to drive the detection tubes 9 to suck in and discharge air;

[0070] The processor 30 further comprises a second control unit for controlling the air suction mechanism;

[0071] It should be noted that the concentration data comprises a flow signal and a concentration signal;

[0072] Specifically, when it is needed to detect the dust concentration in the environment, the second control unit in the processor 30 starts the air suction mechanism to drive the two detection tubes 9 to discharge air for a period of time (for example, 1 minute), so as to avoid the blockage of the end of the detection tube 9 and clean the dust remaining in the detection tube 9 in the last detection process, thereby improving the subsequent detection accuracy.

[0073] After the cleaning, the second control unit in the processor 30 drives the air suction mechanism to drive the two detection tubes 9 to suck in the external air for a fixed time (for example, 1 minute), so that the dust in the external air enters the detection tubes 9, and then the flow signals Q A and Q B and the concentration signals S A and S B of the two detection tubes 9 are detected by the flow sensor 13 and the laser dust sensor 12, respectively.

[0074] Subsequently, the flow signals Q A , Q B and the concentration signals S A , S B of the two detection tubes 9 are sent to the processor 30, which are received by the data receiving unit of the processor 30. After receiving the concentration data, the data processing unit in the processor 30 processes the concentration data to generate two groups of concentration parameters of the two detection tubes 8, and processes the two groups of concentration parameters by the average method to obtain a concentration value. Subsequently, the first control unit in the processor 30 generates a corresponding control signal according to the different concentration values.

[0075] The potentiometer 8 increases or decreases the resistance size according to the corresponding control signal, so as to adjust the output current size of the circuit, so that the explosion-proof lamp enhances the brightness when the dust concentration is large, improves the brightness of the working environment, and facilitates the observation of the environment by the staff. When the dust concentration is small, the explosion-proof lamp reduces the brightness to reduce the power consumption, thereby being conducive to reducing the heat generation of the explosion-proof lamp and improving the service life of the explosion-proof lamp.

[0076] It should be noted that, since the detection tube 9 is connected with the heat dissipation fin 302, the temperature of the explosion-proof lamp shell is transmitted to the detection tube 9 through the heat dissipation fin 302, so as to heat the detection tube 9, reduce the relative humidity and inhibit the dew, thereby facilitating to reduce the interference of water vapor on the laser dust sensor 12, and further improve the precision of detecting the dust concentration.

[0077] As a further embodiment of the present application, the air suction mechanism comprises:

[0078] The machine shell 15 is fixed outside the explosion-proof lamp shell, and the partition plate 16 is fixedly connected in the machine shell 15. The mounting pipe 18 is fixedly connected between the partition plate 16 and the machine shell 15.

[0079] The fan blade 20 is rotatably connected in the mounting pipe 18.

[0080] The first servo motor 21 is fixedly connected on the side wall of the end portion of the mounting pipe 18. The output shaft of the first servo motor 21 is fixedly connected with the shaft of the fan blade 20.

[0081] The two first communication pipes 22 are connected with the detection tube 9 at one end, and are rotatably communicated with the machine shell 15 and the end portion of the mounting pipe 18 at the other end.

[0082] Specifically, by setting the machine shell 15, the fan blade 20 and the first servo motor 21, when the concentration needs to be detected, the second control unit in the processor 30 starts the first servo motor 21. The output shaft of the first servo motor 21 reversely rotates first to drive the two detection tubes 9 to exhaust, on the one hand to avoid the end portion of the detection tube 9 from being blocked, and on the other hand to clean the dust remaining in the detection tube 9 in the last detection process, so as to improve the subsequent detection precision.

[0083] After a period of cleaning, the second control unit in the processor 30 controls the output shaft of the first servo motor 21 to rotate in the positive direction. Under the connection of the first communication pipe 22, the two detection tubes 9 suck the external air, so as to detect the dust content in the external air.

[0084] As a further embodiment of the present application, it further comprises:

[0085] The annular air pipe 23 is fixed to the end portion of the heat dissipation fin 302 through the mounting ring.

[0086] The plurality of exhaust pipes 24 are annularly arrayed and fixedly communicated on the outer side wall of the annular air pipe 23. The exhaust pipe 24 is located between the two heat dissipation fins 302.

[0087] The air inlet pipe 25 is fixedly communicated with the annular air pipe 23 at one end, and extends to the machine shell 15 at the other end.

[0088] A second communication pipe 26, one end of the second communication pipe 26 penetrates the outer wall of the shell 15 and is connected with the air inlet pipe 25, and the other end penetrates the end of the mounting pipe 18 and is in rotational communication with the end of the mounting pipe 18;

[0089] Further comprising:

[0090] A sealing disc 27, the sealing disc 27 is rotatably connected in the mounting pipe 18, and a side wall of the sealing disc 27 is provided with a first air hole 2701 matched with the first communication pipe 22 and a second air hole 2703 matched with the second communication pipe 26;

[0091] A rotary driving mechanism, the rotary driving mechanism is used for driving the sealing disc 27 to rotate to switch the communication state of the first air hole 2701 and the second air hole 2703;

[0092] The rotary driving mechanism comprises:

[0093] A first gear 28, the inner ring of the first gear 28 penetrates the mounting pipe 18 and is rotatably connected with the mounting pipe 18, and the inner ring of the first gear 28 is fixedly connected to the outer ring wall of the sealing disc 27;

[0094] A second gear 29, the second gear 29 is engaged with the first gear 28;

[0095] A second servo motor 17, the second servo motor 17 is fixedly connected in the shell 15, and the output shaft of the second servo motor 17 is fixedly connected with the shaft of the second gear 29;

[0096] The processor 30 further comprises a third control unit for controlling the rotary driving mechanism;

[0097] Specifically, when the dust concentration is large, the brightness of the explosion-proof lamp increases, the power consumption of the explosion-proof lamp increases, and the temperature of the explosion-proof lamp increases, and if the temperature is too high, the explosion-proof lamp is prone to damage, and the technical solution can solve the above problems, and the specific operation is as follows:

[0098] Scenario one: by setting the annular air pipe 23 and exhaust pipe 24, when the dust concentration is large, the second control unit of the processor 30 controls the first servo motor 21 to continue to drive the fan blade 20 to rotate reversely, and the third control unit of the processor 30 starts the second servo motor 17, so that the second servo motor 17 drives the second gear 29 to rotate forwardly, under the action of the mutual meshing of the second gear 29 and the first gear 28, the first gear 28 drives the sealing disc 27 to rotate, so that the two first air holes 2701 are sealed with the two first communication pipes 22 respectively, the second air hole 2703 is communicated with the second communication pipe 26, so that the air flow formed by the rotation of the fan blade 20 enters the annular air pipe 23 through the second communication pipe 26, and finally is discharged through the several exhaust pipes 24, thereby air cooling the heat dissipation fins 302 to reduce the temperature of the explosion-proof lamp, thereby reducing the damage of the high power consumption to the explosion-proof lamp and improving the service life of the explosion-proof lamp;

[0099] When it is needed to re-detect the dust concentration, the third control unit of the processor 30 controls the second servo motor 17, so that the second servo motor 17 drives the second gear 29 to rotate reversely first, thereby driving the first gear 28 to rotate the sealing disc 27, so that the two first air holes 2701 are communicated with the two first communication pipes 22 respectively, and the second air hole 2703 is sealed with the second communication pipe 26, so that the air flow formed by the rotation of the fan blade 20 enters the detection pipe 9 through the first communication pipe 22, and finally blows the dust remaining in the detection pipe 9 out of the detection pipe 9, so as to clean the dust remaining in the detection pipe 9, thereby improving the accuracy of detecting the dust concentration;

[0100] After cleaning, the second control unit of the processor 30 controls the first servo motor 21 to rotate forwardly, and the same operation as described above is completed to detect the dust concentration;

[0101] Scenario two: when the dust concentration is small, the third control unit of the processor 30 controls the first servo motor 21 to be closed, and the fan blade 20 stops rotating to reduce power loss;

[0102] When it is needed to re-detect the dust concentration, the second control unit of the processor 30 controls the first servo motor 21 to rotate reversely first to clean the dust remaining in the detection pipe 9, and after cleaning, the second control unit of the processor 30 controls the first servo motor 21 to rotate forwardly, and the same operation as described above is completed to detect the dust concentration.

[0103] It should be noted that the outer wall of the first servo motor 21 and the second servo motor 17 is provided with an explosion-proof shell

[0104] It needs to be explained that the first communication pipe 22 is connected with the detection pipe 9 through screwing, and the second communication pipe 26 is connected with the air inlet pipe 25 through screwing, so as to facilitate installation and disassembly.

[0105] As a further embodiment of the present application, the first installation cavity 901 and the second installation cavity 902 are arranged in the detection pipe 9, the laser dust sensor 12 is arranged in the first installation cavity 901, and the flow sensor 13 is arranged in the second installation cavity 902.

[0106] The fixed seat 10 is fixedly connected to the outer side wall of the detection pipe 9, the fixed plate 11 is fixedly connected to the top end of the fixed seat 10 through a bolt, and the laser dust sensor 12 and the flow sensor 13 are fixedly connected to the bottom end of the fixed plate 11.

[0107] Specifically, the fixed seat 10 and the fixed plate 11 are arranged, and since the fixed plate 11 is fixed to the fixed seat 10 through a bolt, when the laser dust sensor 12 and the flow sensor 13 are damaged or need to be cleaned, they can be easily disassembled and installed.

[0108] As a further embodiment of the present application, the first filter screen 19 is fixedly connected to the end of the installation pipe 18, and in the process of reverse rotation of the fan blade 20, the dust in the external air is filtered through the first filter screen 19, so as to prevent the dust from entering the detection pipe 9.

[0109] As a further embodiment of the present application, the two second filter screens 2702 are fixedly connected to the side wall of the sealing disc 27 at positions corresponding to the two first air holes 2701, and in the process of forward rotation of the fan blade 20, the dust in the detection pipe 9 is filtered through the second filter screen 2702, so as to prevent the dust from entering the machine shell 15.

[0110] As a further embodiment of the present application, the filter grid 14 is fixedly connected to the end of the detection pipe 9, and in the process of forward rotation of the fan blade 20, the flying fluff and insects and other impurities in the air are filtered through the filter grid 14, so as to reduce the interference of the detected dust concentration.

[0111] The explosion-proof lamp shell specifically comprises:

[0112] The explosion-proof bottom plate 1 is fixedly connected with the tempered glass 2 at the top end, and the machine shell 15 is fixedly connected to the explosion-proof bottom plate 1 through a bolt.

[0113] The explosion-proof panel 3 is fixedly connected to the top end of the explosion-proof bottom plate 1 through a bolt, a plurality of heat dissipation fins 302 are fixedly connected in an annular array at the top end of the explosion-proof panel 3, and the light source plate 4 is fixedly connected to the inner top end of the explosion-proof panel 3.

[0114] The power supply shell comprises:

[0115] The explosion-proof shell 5 is fixedly connected to the top end of the explosion-proof panel 3 by bolts;

[0116] The rear cover 6 is fixedly connected to the top end of the explosion-proof shell 5 by bolts;

[0117] The wiring cover 7 is fixedly connected to the top end of the rear cover 6 by bolts;

[0118] Specifically, by arranging the explosion-proof panel 3, the explosion-proof shell 5 and the wiring shell, the explosion-proof lamp is convenient to disassemble and assemble.

[0119] The working principle of the present application is as follows: during the use of the explosion-proof lamp, the dust concentration detection mechanism detects the dust concentration in the environment every certain period of time (for example, once every 1 hour), and generates dust concentration data, then the dust concentration detection mechanism sends the dust concentration data to the processor 30, the data receiving unit in the processor 30 receives the concentration data detected by the dust concentration detection mechanism, after receiving the concentration data, the data processing unit in the processor 30 processes the concentration data and generates a concentration value, then the first control unit in the processor 30 generates a corresponding control signal according to different concentration values (for example, a first PWM dimming signal when the dust concentration value is large, and a second PWM dimming signal when the dust concentration value is small), the potentiometer 8 adjusts (increases or decreases) the output current according to the corresponding control signal (the first PWM dimming signal or the second PWM dimming signal), so as to adjust the brightness of the light source panel 4, so that the explosion-proof lamp enhances the brightness when the dust concentration is large, improves the brightness of the working environment, and facilitates the observation of the environment by the workers, and the explosion-proof lamp reduces the brightness when the dust concentration is small, reduces the power consumption, so as to facilitate the reduction of the heat generation of the explosion-proof lamp, and improve the service life of the explosion-proof lamp.

[0120] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An LED explosion-proof lighting fixture, characterized in that, include: An explosion-proof lamp housing, wherein a light source cavity (301) is provided inside the explosion-proof lamp housing, and a light source plate (4) is provided inside the light source cavity (301). Several heat dissipation fins (302) are fixedly connected to the top of the explosion-proof lamp housing in a ring array. A power supply housing, wherein a power supply cavity (501) and a wiring cavity (601) are provided inside the power supply housing. A dust concentration detection mechanism is used to detect the dust concentration in the air. A potentiometer (8) is provided inside the power supply housing. The power supply housing has a built-in processor (30). The processor (30) is electrically connected to the dust concentration detection mechanism. The processor (30) is used to receive the concentration data detected by the dust concentration detection mechanism, and to process the concentration data of different dusts to generate a concentration value. Then, the processor (30) generates a corresponding control signal according to different concentration values. The potentiometer (8) adjusts the resistance of the circuit based on the control signal. The dust concentration detection mechanism includes: two detection tubes (9), which are disposed at the top of the explosion-proof lamp housing; and a ventilation mechanism for driving the detection tubes (9) to draw in and exhaust air. The exhaust mechanism includes: a housing (15), which is fixed to the outside of the explosion-proof lamp housing, a partition (16) is fixedly connected inside the housing (15), an installation tube (18) is fixedly connected between the partition (16) and the housing (15), and a fan blade (20) is rotatably connected inside the installation tube (18); a first servo motor (21) for driving the fan blade (20) to rotate; and two first connecting tubes (22), one end of which is connected to a detection tube (9), and the other end of which passes through the rear side wall of the housing (15) and communicates with the end of the installation tube (18). It also includes: an annular air pipe (23), which is fixed to the end of the heat dissipation fin (302) by a mounting ring, and the outer wall of the annular air pipe (23) is fixedly connected to several exhaust pipes (24) at the middle position of the two heat dissipation fins (302); an air inlet pipe (25), one end of which is fixedly connected to the annular air pipe (23), and the other end is connected to a second connecting pipe (26), the other end of which passes through the housing (15) and is connected to the end of the mounting pipe (18); It also includes: a sealing disc (27), which is rotatably connected inside the mounting tube (18), and its side wall is provided with a first air hole (2701) adapted to the first connecting tube (22) and a second air hole (2703) adapted to the second connecting tube (26); a rotary drive mechanism, which is used to drive the sealing disc (27) to rotate to switch the connection state of the first air hole (2701) and the second air hole (2703).

2. The LED explosion-proof lighting fixture according to claim 1, characterized in that; The dust concentration detection mechanism further includes two laser dust sensors (12), which are respectively installed in two detection tubes (9) to acquire the concentration signal in the detection tubes (9) and send the concentration signal to the processor (30).

3. The LED explosion-proof lighting fixture according to claim 2, characterized in that, Also includes: Two flow sensors (13) are respectively installed in two detection tubes (9) to acquire the flow signal in the detection tubes (9) and send the flow signal to the processor (30).

4. The LED explosion-proof lighting fixture according to claim 3, characterized in that, The two detection tubes (9) are connected to several heat dissipation fins (302) through several heat dissipation fins (302) at both ends, and the heat of the explosion-proof lamp shell of the heat dissipation fins (302) is transferred to the detection tubes (9) to heat the detection tubes (9).

5. The LED explosion-proof lighting fixture according to claim 4, characterized in that, The rotary drive mechanism includes: a first gear (28), the inner ring of the first gear (28) passes through the mounting tube (18) and is rotatably connected to the mounting tube (18), and the inner ring of the first gear (28) is fixedly connected to the outer ring wall of the sealing disc (27); a second gear (29), the second gear (29) meshes with the first gear (28); and a second servo motor (17), the second servo motor (17) drives the second gear (29) to rotate.

6. The LED explosion-proof lighting fixture according to claim 5, characterized in that, Also includes: The first mounting cavity (901) and the second mounting cavity (902) are located inside the detection tube (9); the fixed seat (10) is fixedly connected to the outer wall of the detection tube (9), and the top of the fixed seat (10) is fixedly connected to the fixed plate (11) by bolts. The laser dust sensor (12) and the flow sensor (13) are respectively located in the first mounting cavity (901) and the second mounting cavity (902) and are fixedly connected to the fixed plate (11).

7. An LED explosion-proof lighting fixture according to claim 6, characterized in that, It also includes two second filters (2702), which are fixedly connected to the side wall of the sealing disc (27) at the positions of the two first air holes (2701).

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