LED explosion-proof lamp

Abstract

The invention 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 is formed in the explosion-proof lamp shell, a light source plate is arranged in the light source cavity, and a plurality of cooling fins are fixedly connected to the top end of the explosion-proof lamp shell in an annular array mode. A power supply cavity and a wiring cavity are formed in the power supply shell; the dust concentration detection mechanism is used for detecting the dust concentration in the air; according to the explosion-proof lamp, 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, so that the brightness of the explosion-proof lamp is enhanced when the dust concentration is large, the working environment brightness is improved, and workers can conveniently observe the environment; when the dust concentration is small, the brightness of the explosion-proof lamp is reduced, the power consumption is reduced, the heating value of the explosion-proof lamp is reduced, and the service life of the explosion-proof lamp is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of explosion-proof lamps, and particularly to an LED explosion-proof lamp. Background Art

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

[0003] For example, the invention patent with the application number CN201711298689.0 discloses a wireless connection structure for lamps and an explosion-proof LED lamp, including an upper wiring component that can be electrically connected to the power supply wire led out from the upper housing of the lamp, and a lower wiring component that can be electrically connected to the wire led out from the lower housing of the lamp. The upper wiring component and the lower wiring component can be electrically connected in a pluggable manner, realizing wireless connection between the upper wiring component and the lower wiring component. The upper wiring component has a quick disassembly and assembly structure that can be detachably connected to the upper housing of the lamp.

[0004] The existing explosion-proof lamps still have the following deficiencies in actual use: for example, during the use of explosion-proof lamps in a coal mine environment, the lighting effect of the explosion-proof lamps is easily affected by the dust content in the coal mine. When the dust content in the air is large, it is easy to block the light emitted by the explosion-proof lamps, reducing the lighting brightness. On the contrary, it will reduce the blocking of the light of the explosion-proof lamps. However, the brightness of the existing explosion-proof lamps is usually adjusted manually, which is not convenient to automatically adjust the brightness of the explosion-proof lamps according to the dust content in the environment.

[0005] Therefore, the present invention proposes an LED explosion-proof lamp to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an LED explosion-proof lamp, including: An explosion-proof lamp housing, a light source cavity is arranged inside the explosion-proof housing, a light source board is arranged inside the light source cavity, and several heat dissipation fins are fixedly connected in an annular array at the top of the explosion-proof lamp housing; A power supply housing, a power supply cavity and a wiring cavity are arranged inside the power supply housing; A dust concentration detection mechanism, which is used to detect the dust concentration in the air; A potentiometer, the potentiometer is arranged inside the power supply housing, a processor is arranged inside the power supply housing, the processor is electrically connected to the dust concentration detection mechanism, the processor is used to receive the concentration data detected by the dust concentration detection mechanism, and generate a concentration value according to the concentration data of different dusts. 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.

[0007] Preferably, the dust concentration detection mechanism includes: Two detection tubes, which are arranged at the top of the explosion-proof lamp housing; Two laser dust sensors, which are respectively arranged in the two detection tubes, used to obtain the concentration signal in the detection tube and send the concentration signal to the processor; An air extraction mechanism, which is used to drive the detection tube to inhale and discharge air.

[0008] Preferably, it further includes: Two flow sensors, which are respectively arranged in the two detection tubes, used to obtain the flow signal in the detection tube and send the flow signal to the processor.

[0009] Preferably, both ends of the two detection tubes respectively penetrate through several heat dissipation fins on the path and are fixedly connected to the several heat dissipation fins, and the temperature of the explosion-proof lamp housing is transmitted to the detection tubes through the heat dissipation fins to heat the detection tubes.

[0010] Preferably, the air extraction mechanism includes: A housing, which is fixed on the outside of the explosion-proof lamp housing. A partition is fixedly connected inside the housing. An installation pipe is fixedly connected between the partition and the housing. A fan blade is rotatably connected inside the installation pipe; A first servo motor, used to drive the fan blade to rotate; Two first communication pipes, one end of each of the two first communication pipes is connected to the detection tube, and the other end penetrates through the end of the installation pipe and is rotatably connected to the end of the installation pipe.

[0011] Preferably, it further includes: An annular air pipe, which is fixed to the end of the heat dissipation fin through an installation ring. A plurality of exhaust pipes are fixedly communicated on the outer side wall of the annular air pipe at the middle position between the two heat dissipation fins; An air inlet pipe, one end of which is fixedly communicated with the annular air pipe, and the other end is connected with a second communication pipe. The other end of the second communication pipe penetrates through the housing and the installation pipe and is rotatably connected to the housing and the installation pipe.

[0012] Preferably, it further includes: A sealing disc, which is rotatably connected inside the installation pipe. First air holes adapted to the first communication pipe and second air holes adapted to the second communication pipe are opened on its side wall; A rotation driving mechanism, which is used to drive the sealing disc to rotate to switch the communication state between the first air hole and the second air hole.

[0013] Preferably, the rotation driving mechanism includes: The first gear, the inner ring of the first gear passes through the installation pipe and is rotatably connected to the installation pipe, and the inner ring of the first gear is fixedly connected to the outer wall of the sealing disc; The second gear, the second gear meshes with the first gear; The second servo motor, the second servo motor drives the second gear to rotate.

[0014] Preferably, it further includes: The first installation cavity and the second installation cavity, the first installation cavity and the second installation cavity are opened in the detection pipe; The fixed seat, the fixed seat is fixedly connected to the outer side wall of the detection pipe, the top of the fixed seat is fixedly connected with a fixing plate by bolts, and the laser dust sensor and the flow sensor are respectively arranged in the first installation cavity and the second installation cavity and are fixedly connected to the fixing plate.

[0015] Preferably, it further includes two second filter screens, and the two second filter screens are respectively fixedly connected to the side wall of the sealing disc corresponding to the positions of the two first air holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: First, by setting the dust concentration detection mechanism, the potentiometer and the processor, the potentiometer adjusts the brightness of the light source plate according to the dust concentration detected by the dust concentration detection mechanism, so that the explosion-proof lamp enhances the brightness when the dust concentration is large, improves the brightness of the working environment, and is convenient for the staff to observe the environment. When the dust concentration is small, the explosion-proof lamp reduces the brightness and reduces the power consumption, which is beneficial to reducing the heat generation of the explosion-proof lamp and improving the service life of the explosion-proof lamp.

[0017] Second, by setting two detection pipes, the laser dust sensor and the flow sensor, two groups of concentration data can be obtained, and the concentration value is obtained by processing the two groups of concentration parameters by the averaging method, which improves the detection result.

[0018] Third, since the detection pipe is connected to the heat dissipation fins, the temperature of the explosion-proof lamp housing is transmitted to the detection pipe through the heat dissipation fins, thereby heating the detection pipe, reducing the relative humidity and suppressing condensation, which is beneficial to reducing the interference of water vapor on the laser dust sensor and further improving the accuracy of detecting the dust concentration.

[0019] Fourth, by setting the annular air pipe and the exhaust pipe, when the dust concentration is large, the airflow formed by the rotation of the fan blade enters the annular air pipe through the second communication pipe and is finally discharged through several exhaust pipes, thereby air-cooling the heat dissipation fins to reduce the temperature of the explosion-proof lamp, which is beneficial to reducing the damage caused by excessive power consumption to the explosion-proof lamp and improving the service life of the explosion-proof lamp.

[0020] V. By setting the fixed seat and the fixed plate, since the fixed plate is fixed to the fixed seat by bolts, it is convenient to disassemble and install when the laser dust sensor and the flow sensor are damaged or need to be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the explosion-proof lamp housing and the power supply housing of the present invention; Figure 3 is an exploded view of the explosion-proof lamp housing of the present invention; Figure 4 is a schematic diagram of the connection between the housing and the explosion-proof bottom plate of the present invention; Figure 5 is a schematic diagram of the connection between the detection tube and the fixed seat of the present invention; Figure 6 is a schematic diagram of the connection between the annular air pipe and the exhaust pipe of the present invention; Figure 7 is a cross-sectional view of the housing of the present invention; Figure 8 is a schematic diagram of the connection between the installation pipe and the fan blade of the present invention; Figure 9 is a schematic diagram of the connection between the installation pipe and the sealing disc of the present invention; Figure 10 is a schematic diagram of the connection between the sealing disc and the fan blade of the present invention.

[0022] In the figure: explosion-proof bottom plate 1, toughened glass 2, flameproof panel 3, light source cavity 301, heat dissipation fins 302, light source board 4, flameproof housing 5, power supply cavity 501, rear cover 6, wiring cavity 601, wiring cover 7, potentiometer 8, detection tube 9, first installation cavity 901, second installation cavity 902, fixed seat 10, fixed plate 11, laser dust sensor 12, flow sensor 13, filter grid 14, housing 15, partition 16, second servo motor 17, installation pipe 18, first filter net 19, fan blade 20, first servo motor 21, first communication pipe 22, annular air pipe 23, exhaust pipe 24, intake pipe 25, second communication pipe 26, sealing disc 27, first air hole 2701, second filter net 2702, second air hole 2703, first gear 28, second gear 29, processor 30. DETAILED DESCRIPTION OF THE INVENTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The following preferred embodiments are only examples, and those skilled in the art can think of other obvious variations.

[0024] As Figures 1 to 10 shown, an LED explosion-proof lamp includes: Explosion-proof lamp housing, a light source cavity 301 is arranged inside the explosion-proof housing, a light source board 4 is arranged inside the light source cavity 301, and several heat dissipation fins 302 are fixedly connected in an annular array at the top end of the explosion-proof lamp housing; Power supply housing, a power supply cavity 501 and a wiring cavity 601 are arranged inside the power supply housing; Dust concentration detection mechanism, which is used to detect the dust concentration in the air; Potentiometer 8, the potentiometer 8 is arranged inside the power supply housing, a processor 30 is arranged inside the power supply housing, 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 process the concentration data according to different dust concentration data to generate a concentration value, the processor 30 generates a corresponding control signal according to different concentration values, and the potentiometer 8 adjusts the size of the circuit resistance based on the control signal, thereby adjusting the size of the circuit output current; Among them, the processor includes the following configurations: Data receiving unit, which receives the concentration data detected by the dust concentration detection mechanism; Data processing unit, which processes the concentration data and generates a concentration value; First control unit, which generates a corresponding control signal according to different concentration values to control the output current size of the potentiometer 8; Specifically, in the prior art, during the use of explosion-proof lamps in coal mine environments, the lighting effect of explosion-proof lamps is easily affected by the dust content in coal mines. When the dust content in the air is large, it is easy to block the light emitted by the explosion-proof lamp, reducing the lighting brightness. On the contrary, it will reduce the blocking of the light of the explosion-proof lamp. However, the brightness of existing explosion-proof lamps 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. This technical solution can solve the above problems, and the specific operation is as follows: During the use of the explosion-proof lamp, the dust concentration in the environment is detected by a dust concentration detection mechanism at regular intervals (e.g., detected once every 1 hour), and dust concentration data is generated. Subsequently, 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. Subsequently, the first control unit in the processor 30 generates corresponding control signals according to different concentration values (for example, generates a first PWM dimming signal when the dust concentration value is large, and generates 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 (the first PWM dimming signal or the second PWM dimming signal), and adjusts the magnitude of the output current of the circuit, thereby adjusting the brightness of the light source board 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 staff to observe the environment. When the dust concentration is small, the explosion-proof lamp reduces the brightness and reduces the power consumption, which is conducive to reducing the heat generation of the explosion-proof lamp and improving the service life of the explosion-proof lamp.

[0025] As a further implementation of the invention, the dust concentration detection mechanism includes: Two detection tubes 9 are arranged at the top of the explosion-proof lamp housing. Both ends of the two detection tubes 9 respectively penetrate through several heat dissipation fins 302 on the path and are fixedly connected to the several heat dissipation fins 302. Two laser dust sensors 12 are respectively arranged in the two detection tubes 9, used to obtain the concentration signal in the detection tube 9 and send the concentration signal to the processor 30. Two flow sensors 13 are respectively arranged in the two detection tubes 9, used to obtain the flow signal in the detection tube 9 and send the flow signal to the processor 30. An air extraction mechanism is used to drive the detection tube 9 to inhale and exhaust air. The processor 30 further includes a second control unit for controlling the air extraction mechanism. It should be noted that: the concentration data includes the flow signal and the concentration signal. Specifically, by setting two detection tubes 9, laser dust sensors 12 and flow sensors 13, when it is necessary to detect the dust concentration in the environment, the second control unit in the processor 30 starts the air extraction mechanism and first drives the two detection tubes 9 to exhaust air for a period of time (e.g., 1 minute). On the one hand, it avoids blockage at the end of the detection tube 9, and on the other hand, it cleans the dust remaining in the detection tube 9 during the previous detection process, thereby improving the subsequent detection accuracy. After cleaning, the second control unit in the processor 30 drives the exhaust mechanism to suck in outside air through the two detection tubes 9 for a fixed time (e.g., 1 minute), so that dust in the outside air enters the detection tubes 9, and then the flow sensors 13 and the laser dust sensors 12 respectively detect the flow signals Q A and Q B in the two detection tubes 9, as well as the concentration signals S A and S B ; Subsequently, the flow signals Q A 、Q B in the two detection tubes 9 and the concentration signals S A 、S B are sent to the processor 30 and 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 and generates two sets of concentration parameters for the two detection tubes 8, and processes the two sets of concentration parameters by the averaging method to obtain the concentration value. Subsequently, the first control unit in the processor 30 generates corresponding control signals according to different concentration values; The potentiometer 8 increases or decreases the resistance according to the corresponding control signal, thereby adjusting the output current of the circuit, so that the explosion-proof lamp enhances the brightness when the dust concentration is relatively high, improves the working environment brightness, facilitates the staff to observe the environment, and the explosion-proof lamp reduces the brightness and power consumption when the dust concentration is relatively low, thereby helping to reduce the heat generation of the explosion-proof lamp and improve the service life of the explosion-proof lamp.

[0026] It should be noted that since the detection tube 9 is connected to the heat dissipation fins 302, the temperature of the explosion-proof lamp housing is transmitted to the detection tube 9 through the heat dissipation fins 302, thereby heating the detection tube 9, reducing the relative humidity and suppressing condensation, which is beneficial to reducing the interference of water vapor on the laser dust sensor 12 and further improving the accuracy of detecting the dust concentration.

[0027] As a further implementation of the present invention, the exhaust mechanism includes: A housing 15, which is fixed outside the explosion-proof lamp housing. A partition 16 is fixedly connected inside the housing 15, and an installation pipe 18 is fixedly connected between the partition 16 and the housing 15; A fan blade 20, which is rotatably connected inside the installation pipe 18; A first servo motor 21, which is fixedly connected to the side wall of the end of the installation pipe 18. The output shaft of the first servo motor 21 is fixedly connected to the shaft of the fan blade 20; Two first communication pipes 22, one end of the two first communication pipes 22 is connected to the detection tube 9, and the other end penetrates through the housing 15 and is rotatably communicated with the end of the housing 15 and the installation pipe 18; Specifically, by setting the housing 15, the fan blades 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 rotates reversely first, driving the two detection tubes 9 to exhaust. On the one hand, it avoids blockage at the end of the detection tubes 9. On the other hand, it cleans the residual dust in the detection tubes 9 during the previous detection process, thereby improving the subsequent detection accuracy. After cleaning for a period of time, the second control unit in the processor 30 controls the output shaft of the first servo motor 21 to rotate forward. Under the connection of the first connecting pipe 22, the two detection tubes 9 suck in the outside air, thereby detecting the dust content in the outside air.

[0028] As a further implementation of the present invention, it further includes: An annular air pipe 23, and the annular air pipe 23 is fixed to the end of the heat dissipation fins 302 through a mounting ring; Several exhaust pipes 24, one end of the several exhaust pipes 24 is fixedly connected in an annular array to the outer side wall of the annular air pipe 23, and the exhaust pipes 24 are located between the two heat dissipation fins 302; An air inlet pipe 25, one end of the air inlet pipe 25 is fixedly connected to the annular air pipe 23, and the other end extends towards the housing 15; A second connecting pipe 26, one end of the second connecting pipe 26 penetrates the outer side wall of the housing 15 and is connected to the air inlet pipe 25, and the other end penetrates the end of the mounting pipe 18 and is rotationally connected to the end of the mounting pipe 18; It further includes: A sealing disc 27, the sealing disc 27 is rotatably connected in the mounting pipe 18, and its side wall is provided with a first air hole 2701 adapted to the first connecting pipe 22 and a second air hole 2703 adapted to the second connecting pipe 26; A rotation driving mechanism for driving the sealing disc 27 to rotate to switch the communication state between the first air hole 2701 and the second air hole 2703; The rotation driving mechanism includes: A first gear 28, the inner ring of the first gear 28 penetrates the mounting pipe 18 and is rotatably connected to 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; A second gear 29, the second gear 29 meshes with the first gear 28; A second servo motor 17, the second servo motor 17 is fixedly connected in the housing 15, and the output shaft of the second servo motor 17 is fixedly connected to the second gear 29; The processor 30 further includes a third control unit for controlling the rotation driving mechanism; Specifically, when the dust concentration is relatively high, the brightness of the explosion-proof lamp increases, and the power consumption of the explosion-proof lamp increases, causing the temperature of the explosion-proof lamp to rise. If the temperature is too high, it is likely to cause damage to the explosion-proof lamp. This technical solution can solve the above problems, and the specific operation is as follows; Scenario 1: By setting the annular air pipe 23 and the exhaust pipe 24, when the dust concentration is relatively high, the second control unit of the processor 30 controls the first servo motor 21 to continue driving the fan blade 20 to rotate in the reverse direction, 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 forward. Under the meshing action 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 respectively misaligned and sealed with the two first connecting pipes 22, and the second air hole 2703 is communicated with the second connecting 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 connecting pipe 26 and is finally discharged through several exhaust pipes 24, thereby performing air cooling on the heat dissipation fins 302 to reduce the temperature of the explosion-proof lamp, which is beneficial to reducing the damage caused by excessive power consumption to the explosion-proof lamp and improving the service life of the explosion-proof lamp; When it is necessary 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 first drives the second gear 29 to rotate in the reverse direction, so that the first gear 28 drives the sealing disc 27 to rotate, so that the two first air holes 2701 are respectively communicated with the two first connecting pipes 22, and the second air hole 2703 is misaligned and sealed with the second connecting pipe 26, so that the air flow formed by the rotation of the fan blade 20 enters the detection pipe 9 through the first connecting pipe 22 and finally blows the residual dust in the detection pipe 9 out of the detection pipe 9 to clean the residual dust in the detection pipe 9, thereby improving the accuracy of detecting the dust concentration; After the cleaning is completed, the second control unit of the processor 30 controls the first servo motor 21, so that the first servo motor 21 rotates forward, and according to the same operation as above, the dust concentration detection is completed; Scenario 2: When the dust concentration is relatively low, the third control unit of the processor 30 controls the first servo motor 21 to turn off, and the fan blade 20 stops rotating to reduce power consumption; When it is necessary to re-detect the dust concentration, the second control unit of the processor 30 controls the first servo motor 21 to rotate in the reverse direction first to clean the residual dust in the detection pipe 9. After the cleaning is completed, the second control unit of the processor 30 controls the first servo motor 21 to rotate forward, and according to the same operation as above, the dust concentration detection is completed.

[0029] It should be noted that explosion-proof casings are provided on the outer walls of the first servo motor 21 and the second servo motor 17 It should also be noted that the first connecting pipe 22 is connected to the detection pipe 9 by means of threads, and the second connecting pipe 26 is connected to the air inlet pipe 25 by means of threads, so as to facilitate installation and disassembly.

[0030] As a further embodiment of the present invention, the first installation cavity 901 and the second installation cavity 902 are provided 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. The fixing seat 10 is fixedly connected to the outer side wall of the detection pipe 9. The top end of the fixing seat 10 is fixedly connected with a fixing plate 11 by bolts. The laser dust sensor 12 and the flow sensor 13 are fixedly connected to the bottom end of the fixing plate 11. Specifically, by providing the fixing seat 10 and the fixing plate 11, since the fixing plate 11 is fixed to the fixing seat 10 by bolts, it is convenient to disassemble and install when the laser dust sensor 12 and the flow sensor 13 are damaged or need to be cleaned.

[0031] As a further embodiment of the present invention, it further includes a first filter screen 19, and the first filter screen 19 is fixedly connected to the end of the installation pipe 18; during the reverse rotation of the fan blade 20, the dust in the outside air is filtered by the first filter screen 19 to prevent the dust from entering the detection pipe 9.

[0032] As a further embodiment of the present invention, it further includes two second filter screens 2702, and the two second filter screens 2702 are respectively fixedly connected to the side wall of the sealing disc 27 corresponding to the positions of the two first air holes 2701; during the forward rotation of the fan blade 20, the dust in the detection pipe 9 is filtered by the second filter screen 2702 to prevent the dust from entering the machine shell 15.

[0033] As a further embodiment of the present invention, it further includes a filter grid 14, and the filter grid 14 is fixedly connected to the end of the detection pipe 9; during the forward rotation of the fan blade 20, impurities such as flying flocs and insects in the air are filtered by the filter grid 14 to reduce the interference of detecting the dust concentration.

[0034] The explosion-proof lamp housing specifically includes: The explosion-proof bottom plate 1, a tempered glass 2 is fixedly connected to the inner top end of the explosion-proof bottom plate 1, and the machine shell 15 is fixedly connected to the explosion-proof bottom plate 1 by bolts. The flameproof panel 3 is fixedly connected to the top end of the explosion-proof bottom plate 1 by bolts. Several heat dissipation fins 302 are fixedly connected to the top end of the flameproof panel 3 in a circular array, and the light source board 4 is fixedly connected to the inner top end of the flameproof panel 3. The power supply housing includes: Explosion-proof housing 5, the explosion-proof housing 5 is fixedly connected to the top of the explosion-proof panel 3 by bolts; Rear cover 6, the rear cover 6 is fixedly connected to the top of the explosion-proof housing 5 by bolts; Wiring cover 7, the wiring cover 7 is fixedly connected to the top of the rear cover 6 by bolts; Specifically, by providing the explosion-proof panel 3, the explosion-proof housing 5 and the wiring housing, it is convenient to disassemble and assemble the explosion-proof lamp.

[0035] Working principle of the present invention: During the use of the explosion-proof lamp, the dust concentration in the environment is detected by the dust concentration detection mechanism at regular intervals (such as once every 1 hour), and dust concentration data is generated. Subsequently, 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, through the data processing unit in the processor 30, the concentration data is processed and a concentration value is generated. Subsequently, the first control unit in the processor 30 generates corresponding control signals according to different concentration values (for example, a first PWM dimming signal is generated when the dust concentration value is large, and a second PWM dimming signal is generated 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), thereby adjusting the brightness of the light source board 4, so that the explosion-proof lamp increases the brightness when the dust concentration is large, improves the brightness of the working environment, and is convenient for the staff to observe the environment. When the dust concentration is small, the explosion-proof lamp reduces the brightness and reduces the power consumption, which is beneficial to reducing the heat generation of the explosion-proof lamp and improving the service life of the explosion-proof lamp.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An LED explosion-proof lamp, characterized in that, Including: An explosion-proof lamp housing, a light source cavity (301) is arranged inside the explosion-proof housing, a light source board (4) is arranged inside the light source cavity (301), and several heat dissipation fins (302) are fixedly connected in an annular array at the top end of the explosion-proof lamp housing; A power supply housing, a power supply cavity (501) and a wiring cavity (601) are arranged inside the power supply housing; A dust concentration detection mechanism for detecting the dust concentration in the air; A potentiometer (8), the potentiometer (8) is arranged inside the power supply housing, a processor (30) is arranged inside the power supply housing, the processor (30) is electrically connected to the dust concentration detection mechanism, the processor (30) is used for receiving the concentration data detected by the dust concentration detection mechanism, processing the concentration data according to different dusts to generate a concentration value, and then the processor (30) generates a corresponding control signal according to different concentration values, and the potentiometer (8) adjusts the size of the circuit resistance based on the control signal.

2. An LED explosion-proof lamp according to claim 1, characterized in that, The dust concentration detection mechanism includes: Two detection tubes (9), the two detection tubes (9) are arranged at the top end of the explosion-proof lamp housing; Two laser dust sensors (12), the two laser dust sensors (12) are respectively arranged inside the two detection tubes (9) for acquiring the concentration signal inside the detection tubes (9) and sending the concentration signal to the processor (30); An air extraction mechanism for driving the detection tubes (9) to inhale and exhaust air.

3. An LED explosion-proof lamp according to claim 2, characterized in that, It also includes: Two flow sensors (13), the two flow sensors (13) are respectively arranged inside the two detection tubes (9) for acquiring the flow signal inside the detection tubes (9) and sending the flow signal to the processor (30).

4. An LED explosion-proof lamp according to claim 2, characterized in that, Both ends of the two detection tubes (9) respectively penetrate through several heat dissipation fins (302) on the path and are fixedly connected to the several heat dissipation fins (302), and the temperature of the explosion-proof lamp housing is transmitted to the detection tubes (9) through the heat dissipation fins 302 to heat the detection tubes (9).

5. An LED explosion-proof lamp according to claim 2, characterized in that, The air extraction mechanism includes: A housing (15), the housing (15) is fixed on the outside of the explosion-proof lamp housing, a partition (16) is fixedly connected inside the housing (15), an installation pipe (18) is fixedly connected between the partition (16) and the housing (15), and a fan blade (20) is rotatably connected inside the installation pipe (18); A first servo motor (21) for driving the fan blade (20) to rotate; Two first communication pipes (22), one ends of the two first communication pipes (22) are connected to the detection tubes (9), and the other ends penetrate through the rear side wall of the housing (15) and are communicated with the end of the installation pipe (18).

6. An LED explosion-proof lamp according to claim 5, characterized in that, It also includes: An annular air pipe (23), the annular air pipe (23) is fixed at the end of the heat dissipation fins (302) through an installation ring, and several exhaust pipes (24) are fixedly communicated on the outer side wall of the annular air pipe (23) at the middle position between the two heat dissipation fins (302); An air inlet pipe (25), one end of the air inlet pipe (25) is fixedly communicated with the annular air pipe (23), the other end is connected with a second communication pipe (26), and the other end of the second communication pipe (26) penetrates through the housing (15) and is communicated with the end of the installation pipe (18).

7. An LED explosion-proof lamp according to claim 6, characterized in that, It also includes: A sealing disc (27) is rotatably connected inside the installation pipe (18), and a first air hole (2701) adapted to the first communication pipe (22) and a second air hole (2703) adapted to the second communication pipe (26) are provided on its side wall; A rotation driving mechanism is used to drive the sealing disc (27) to rotate to switch the communication state between the first air hole (2701) and the second air hole (2703).

8. An LED explosion-proof lamp according to claim 7, characterized in that, The rotation driving mechanism includes: A first gear (28), the inner ring of the first gear (28) penetrates through the installation pipe (18) and is rotatably connected to the installation pipe (18), and the inner ring of the first gear (28) is fixedly connected to the outer wall of the sealing disc (27); A second gear (29) that meshes with the first gear (28); A second servo motor (17) that drives the second gear (29) to rotate.

9. An LED explosion-proof lamp according to claim 3, characterized in that, It further includes: A first installation cavity (901) and a second installation cavity (902) are provided inside the detection pipe (9); A fixed seat (10) is fixedly connected to the outer side wall of the detection pipe (9). The top of the fixed seat (10) is fixedly connected with a fixing plate (11) by bolts. The laser dust sensor (12) and the flow sensor (13) are respectively arranged in the first installation cavity (901) and the second installation cavity (902) and are fixedly connected to the fixing plate (11).

10. An LED explosion-proof lamp according to claim 7, characterized in that, It further includes two second filter meshes (2702), and the two second filter meshes (2702) are respectively fixedly connected to the side wall of the sealing disc (27) corresponding to the positions of the two first air holes (2701).

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