An infrared laser module with an explosion-proof structure

Abstract

The present invention discloses an infrared laser module with an explosion-proof structure, specifically relating to the technical field of lasers, including an explosion-proof housing, an infrared laser generating assembly, and a base assembly. A converging chamber is provided at the top of the explosion-proof housing; a connecting pipe group is also provided inside the explosion-proof housing, and an air inlet area is provided on the explosion-proof housing. A partition plate is fixedly installed in the air inlet area. The connecting pipe group includes an air outlet pipe structure and an air inlet pipe structure, and the air outlet pipe structure and the air inlet pipe structure are connected by a connecting pipe. By setting the connecting pipe group, a plurality of connecting channels evenly distributed in the inner cavity of the explosion-proof housing are formed. A plurality of air outlet pipe structures form a heat dissipation structure in the converging chamber, and continuous air flow is formed in the connecting pipe, so as to effectively dissipate heat while ensuring the relative isolation of the internal and external spaces of the explosion-proof housing, improve the safety and stability of the module during use, and increase the service life of the module.

Description

Technical Field

[0001] The present invention relates to the technical field of lasers, and more specifically, to an infrared laser module with an explosion-proof structure. Background Art

[0002] An infrared laser module is a device capable of emitting infrared laser light, and generally includes a laser generator (laser diode), a drive circuit, and corresponding optical components, etc. These components work together to generate an infrared light beam with a specific wavelength, and are widely used in fields such as security monitoring, ranging and mapping, industrial manufacturing and inspection, the medical field, and scientific research.

[0003] Among them, in the field of security monitoring, especially in low-light or no-light environments, the infrared laser module can serve as an efficient light source. The laser generator emits an infrared laser beam, and various optical elements (such as lenses, mirrors, etc.) are used to shape the laser so as to uniformly irradiate within the required range. After the emitted infrared laser irradiates the target object, according to the material and color characteristics of the object surface, part of the light will be reflected back. The reflected infrared light is captured by a sensor (such as a CCD or CMOS sensor in a surveillance camera), and then processed into visual image information. In this way, even in the absence of visible light, the monitoring system can obtain clear images, greatly enhancing the night vision ability of the system, and is especially suitable for application scenarios that require long-distance or high-precision monitoring.

[0004] In short, the infrared laser fill light uses an efficient infrared laser light source and precise optical design to provide a powerful auxiliary lighting function under low-light conditions, enabling the monitoring system to operate effectively in an almost completely dark environment. At the same time, due to the use of a more directional laser technology, compared with the traditional infrared LED fill light solution, it can significantly reduce power consumption while maintaining a high brightness.

[0005] Among them, in some working environments where there are dangerous substances such as flammable and explosive gases, steam or dust (such as storage areas of chemical plants, etc.), these places are relatively large and require a large monitoring distance. Therefore, it is necessary to use infrared laser modules in conjunction with monitoring systems. However, the safety protection level required in these places is also relatively high. If the electronic equipment of the infrared laser module fails or unexpected phenomena occur during operation, it is easy to generate electric sparks, or some electronic components have too high operating temperatures and cause combustion or explosion. This is harmless under normal conditions, but it will cause greater impact in environments where flammable substances exist. In severe cases, even large-scale explosions or fires may occur. Therefore, in order to ensure the safety of the use of infrared laser modules, it is necessary to equip the module with corresponding explosion-proof structures, such as using a sturdy metal shell to encapsulate the electrical components of the infrared laser module and isolate the infrared laser module from external flammable substances. In this way, even if the infrared laser module fails, the combustible substances leaked from the outside will not burn. At the same time, this shell can withstand the explosion pressure when an explosion occurs inside, and prevent the flame from spreading to the external environment, effectively avoiding the impact of the explosion caused by the failure of internal electronic components on the external environment.

[0006] However, for some large infrared laser modules, although the explosion-proof structure provides effective isolation protection to prevent the entry of foreign substances, at the same time, the heat generated by the electronic components in the infrared laser module during operation is difficult to be exchanged with the external environment in a timely manner, resulting in an increase in the overall temperature of the infrared laser module.

[0007] Among them, although the explosion-proof structure can effectively protect the safety of the equipment and will not cause a major impact, in a relatively high temperature environment, the quantum efficiency inside the laser generator (laser diode) will be reduced, resulting in a reduction in the output light power. In extreme cases, excessively high operating temperatures may prevent the laser diode from achieving the expected output power, thereby affecting the performance of the entire system. At the same time, prolonged exposure to high temperatures will accelerate the aging process of the laser diode and other electronic components, resulting in a significant shortening of their service life. Therefore, if the infrared laser module needs to be used continuously for a long time, the internal temperature of the infrared laser module will continue to rise, and there will not be enough time and space to dissipate the heat, which will in turn affect the normal use of the equipment and pose certain safety hazards. Summary of the invention

[0008] The present invention provides an infrared laser module with an explosion-proof structure, and aims to solve the problem that: although the existing explosion-proof structure effectively isolates and protects the infrared laser module to prevent the entry of foreign substances, at the same time, the heat emitted by the electronic components in the infrared laser module during operation is difficult to be exchanged with the external environment in a timely manner, resulting in an increase in the overall temperature of the infrared laser module, affecting the safety of the module.

[0009] To achieve the above object, the present invention provides the following technical solutions: An infrared laser module with an explosion-proof structure, comprising an explosion-proof housing, an infrared laser generating component, and a base component. The infrared laser generating component is installed inside the explosion-proof housing, and a converging chamber is provided at the top of the explosion-proof housing;

[0010] A connecting pipe group is further provided inside the explosion-proof housing, and an air inlet area is provided on the explosion-proof housing. The air inlet area is located in the area of the explosion-proof housing away from the infrared laser generating component, and a partition plate is fixedly installed in the air inlet area;

[0011] The connecting pipe group includes an air outlet pipe structure and an air inlet pipe structure. The air outlet pipe structure and the air inlet pipe structure are connected by a connecting pipe. The top of the air outlet pipe structure penetrates the top wall of the converging chamber and communicates with the outside, and the air outlet pipe structure extends downward in the converging chamber. The air inlet pipe structure penetrates the partition plate and communicates with the outside.

[0012] In a preferred embodiment, a retaining flange is fixedly connected to the edge of the top wall of the converging chamber. The height of the retaining flange is higher than the height of the part of the air outlet pipe structure outside the top wall of the converging chamber, so that a water collecting trough is formed at the top of the converging chamber under the enclosure of the retaining flange. The air outlet pipe structure is a metal heat-conducting structure, and the connecting pipe is arranged in the area of the explosion-proof housing close to the heat-generating area of the infrared laser generating component.

[0013] In a preferred embodiment, a fan assembly is further provided in the air inlet area. The fan assembly includes a fan. The fan is rotatably arranged in the air inlet area. Each air inlet pipe structure is located behind the fan. The fan assembly further includes a fan motor. The fan motor is fixedly installed inside the partition plate. The output shaft of the fan motor penetrates the partition plate and is fixedly connected to the fan. A seal is provided between the output shaft of the fan motor and the partition plate.

[0014] In a preferred embodiment, the infrared laser generating component includes a laser output lens. A laser output port is provided on the explosion-proof housing. The laser output port is a protruding cylindrical structure, and the laser output lens of the infrared laser generating component is located in the laser output port.

[0015] In a preferred embodiment, a lens protection assembly is provided in the laser output port. The lens protection assembly includes a protection lens. A piston lens frame is fixedly installed outside the protection lens. The piston lens frame is slidably arranged in the laser output port, and a sealing structure is provided between the piston lens frame and the laser output port. At the same time, a buffer elastic member is provided between the piston lens frame and the laser output port.

[0016] In a preferred embodiment, a pressure relief structure is provided in the explosion-proof housing. The pressure relief structure includes a fixed air outlet pipe. The fixed air outlet pipe is also connected with a connecting pipe and an air inlet pipe structure. The fixed air outlet pipe is fixedly installed in the top wall of the converging chamber, and an elastic bladder is connected between the fixed air outlet pipe and the connecting pipe.

[0017] In a preferred embodiment, the pressure relief structure further includes a floating exhaust pipe, which is also connected with a connecting pipe and an intake pipe structure. A piston hole is provided in the top wall of the converging chamber. A floating piston is fixedly installed outside the floating exhaust pipe, and the floating piston is slidably installed in the piston hole to form a piston structure. An elastic limiting member is provided at the bottom of the piston hole.

[0018] In a preferred embodiment, the base assembly includes a support plate, and the explosion-proof housing is installed on the support plate. The base assembly further includes a mounting seat, a Z-axis rotation adjustment assembly, and a Y-axis rotation adjustment assembly. The Z-axis rotation adjustment assembly is installed on the mounting seat, the Y-axis rotation adjustment assembly is installed on the Z-axis rotation adjustment assembly, and the support plate is fixedly installed on the Y-axis rotation adjustment assembly.

[0019] In a preferred embodiment, the bottom of the explosion-proof housing is fixedly connected with a self-locking rotating shaft. A self-locking shaft sleeve is fixedly installed in the support plate. The self-locking rotating shaft passes through the self-locking shaft sleeve and is rotationally matched with the self-locking shaft sleeve. An inner collar is rotatably installed outside the self-locking rotating shaft. An outer collar is provided in the self-locking shaft sleeve. The inner collar is located inside the outer collar, and a plurality of centering elastic members are provided between the outer collar and the inner collar. A locking convex key is fixedly connected to one side of the self-locking rotating shaft close to the laser output port. A plurality of engaging grooves are provided in the inner wall of the self-locking shaft sleeve, and the locking convex key and the engaging grooves are engaged with each other.

[0020] In a preferred embodiment, the self-locking rotating shaft is arranged away from the laser output port, and sailboards are fixedly connected to both sides of the explosion-proof housing.

[0021] The beneficial effects of the present invention are as follows: By providing a communication pipe group to form a plurality of communication channels evenly distributed in the inner cavity of the explosion-proof housing, while ensuring the isolation between the outside air and the internal space of the explosion-proof housing, a plurality of exhaust pipe structures form a heat dissipation structure in the converging chamber. Heat is absorbed through the exhaust pipe structure. Especially when the air inside the exhaust pipe structure is heated, it has an upward trend, thereby taking the heat outwards. At the same time, the air near the intake pipe structure enters the connecting pipe, thereby forming a heat convection, that is, a continuous air flow is formed in the connecting pipe, and heat is evenly absorbed in the internal area of the explosion-proof housing. Thus, effective heat dissipation is carried out while ensuring the relative isolation between the inside and outside spaces of the explosion-proof housing, improving the safety and stability of the module during use and increasing the service life of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional view of the present invention.

[0023] Figure 2 is a schematic structural view of the infrared laser generating assembly inside the explosion-proof housing of the present invention.

[0024] Figure 3 This is a schematic structural diagram of the present invention with a fan assembly provided in the air inlet area.

[0025] Figure 4 This is a schematic structural diagram of the present invention after adding a lens protection assembly to the laser output port.

[0026] Figure 5 This is a schematic structural diagram of one of the pressure relief structures of the present invention.

[0027] Figure 6 This is a schematic structural diagram of a pressure relief structure of the present invention.

[0028] Figure 7 This is a schematic structural diagram of the present invention after adding a self-unlocking protection assembly between the explosion-proof housing and the base assembly.

[0029] Figure 8 This is a schematic structural diagram of the present invention after adding a sailboard to the explosion-proof housing.

[0030] Figure 9 This is a schematic diagram of the cooperation between the self-locking rotating shaft and the self-locking shaft sleeve of the present invention.

[0031] Figure 10 This is a transverse sectional view of the cooperation area between the self-locking rotating shaft and the self-locking shaft sleeve of the present invention.

[0032] Reference numerals are: 1. Explosion-proof housing; 11. Laser output port; 12. Converging chamber; 121. Enclosing flange; 122. Piston hole; 123. Elastic limiting member; 13. Air inlet area; 14. Partition plate; 15. Protective net plate; 16. Protective lens; 161. Piston lens frame; 162. Buffer elastic member; 17. Sailboard; 18. Self-locking rotating shaft; 181. Locking convex key; 2. Infrared laser generating assembly; 21. Laser output lens; 3. Base assembly; 31. Support plate; 32. Mounting seat; 33. Z-axis rotation adjustment assembly; 34. Y-axis rotation adjustment assembly; 35. Self-locking shaft sleeve; 351. Inner sleeve ring; 352. Outer sleeve ring; 353. Centering elastic member; 354. Engaging groove; 4. Connecting pipe group; 41. Air outlet pipe structure; 411. Fixed air outlet pipe; 412. Floating air outlet pipe; 42. Air inlet pipe structure; 43. Connecting pipe; 44. Elastic capsule; 45. Floating piston; 5. Fan; 51. Fan motor. Detailed Embodiments

[0033] The following further describes the present application in conjunction with the accompanying drawings. It is necessary to point out here that the following detailed embodiments are only used for further explaining the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0034] Refer to the accompanying drawings of the specificationFigures 1 to 10 , an infrared laser module with an explosion-proof structure, comprising an explosion-proof housing 1, an infrared laser generating component 2 and a base component 3. The infrared laser generating component 2 is installed inside the explosion-proof housing 1, and the explosion-proof housing 1 is installed on the base component 3. Among them, the explosion-proof housing 1 is made of high-strength metal material, and the wall thickness is greater than that of the housing of a general traditional infrared laser module, so as to achieve enhanced protection. At the same time, according to requirements, corresponding protective coatings (such as explosion-proof coatings or fire-proof coatings) or other enhanced protection structures can be set on the inner and outer walls of the explosion-proof housing 1. The explosion-proof housing 1 can be set in the form of a combination of multiple split structures to facilitate the installation of the infrared laser generating component 2, but the connection strength and tightness of multiple split structural parts need to be strengthened. Finally, the formed explosion-proof housing 1 effectively wraps and protects the infrared laser generating component 2. At the same time, the explosion-proof housing 1 is subjected to an overall sealing treatment to isolate the inner and outer cavities of the explosion-proof housing 1, thereby blocking the further influence on the external dangerous environment when an accident occurs to the infrared laser generating component 2, and also isolating the influence of external accidents on the infrared laser generating component 2, realizing effective internal and external explosion-proof protection for the infrared laser generating component 2.

[0035] The infrared laser generating component 2 is mainly composed of a laser generator (such as a laser diode), a drive circuit and optical elements. The finally generated infrared laser is emitted after being processed by the optical elements, that is, emitted through the laser output lens 21. Therefore, an opening for the laser to emit needs to be reserved on the explosion-proof housing 1. At the same time, however, a certain protection for the laser output lens 21 is also required. Therefore, a laser output port 11 is provided on the explosion-proof housing 1. The laser output port 11 is a protruding cylindrical structure, and the laser output lens 21 of the infrared laser generating component 2 is located in the laser output port 11.

[0036] It should be noted that the above infrared laser generating component 2 is a common solution in infrared laser technology, and there will be slight differences when applied in various fields, but the principle is basically the same. Regarding the specific details of the infrared laser generating component 2, they are all common devices in the prior art. Therefore, this embodiment will not be explained in too much detail.

[0037] Since the explosion-proof housing 1 completely isolates the infrared laser generating component 2 from the outside, in order to ensure the corresponding heat dissipation effect of the infrared laser generating component 2 and avoid the temperature inside the explosion-proof housing 1 exceeding the normal operating temperature range of the device, the following technical solutions are provided in this embodiment. Specifically, refer to the attached drawings of the specification Figure 1 and Figure 2, a convergence chamber 12 is provided at the top of the explosion-proof housing 1. The convergence chamber 12 is relatively empty and no corresponding electronic components are provided, thus reserving a safety space for the explosion-proof housing 1. The heat generated by the device can relatively gather towards the convergence chamber 12. At the same time, a connecting pipe group 4 is also provided inside the explosion-proof housing 1, and an air inlet area 13 is provided on the explosion-proof housing 1. The air inlet area 13 is arranged on the side or bottom area of the explosion-proof housing 1, or the air inlet area 13 can be arranged on both the side and the bottom. A partition plate 14 is fixedly installed in the air inlet area 13. The connecting pipe group 4 includes an air outlet pipe structure 41 and an air inlet pipe structure 42. The air outlet pipe structure 41 and the air inlet pipe structure 42 are connected by a connecting pipe 43. The top of the air outlet pipe structure 41 penetrates the top wall of the convergence chamber 12 and communicates with the outside, and the air outlet pipe structure 41 extends downward in the convergence chamber 12. The air inlet pipe structure 42 penetrates the partition plate 14 and communicates with the outside, thus forming a plurality of communication channels evenly distributed in the inner cavity of the explosion-proof housing 1. However, at the same time, the outside air is isolated from the internal space of the explosion-proof housing 1. When the module is in use, a plurality of air outlet pipe structures 41 form a heat dissipation structure in the convergence chamber 12. Heat is absorbed through the air outlet pipe structure 41. Especially after the air inside the air outlet pipe structure 41 is heated, it has an upward trend, thus taking the heat outwards. At the same time, the air near the air inlet pipe structure 42 enters the connecting pipe 43, thus forming a heat convection, that is, a continuous air flow is formed in the connecting pipe 43, and heat is evenly absorbed in the internal area of the explosion-proof housing 1, so as to effectively dissipate heat while ensuring the relative isolation of the internal and external spaces of the explosion-proof housing 1, improve the safety and stability of the module during use, and increase the service life of the module.

[0038] Based on the above principle, in order to further improve the heat dissipation effect, the air outlet pipe structure 41 is a metal heat conduction structure, such as a copper pipe. The connecting pipe 43 and the air inlet pipe structure 42 can use metal materials, or other materials. For example, the connecting pipe 43 can use a copper pipe or an aluminum pipe. During actual assembly, according to the distribution of each unit module of the infrared laser generating component 2, the connecting pipe 43 is bent and shaped to make the connecting pipe 43 fully close to each heating unit in the infrared laser generating component 2 for sufficient heat dissipation. At the same time, the copper pipe or the aluminum pipe also has a certain flexibility. When assembling the explosion-proof housing 1, the respective pipes can be adjusted accordingly to ensure that after the air outlet pipe structure 41 is installed on the top wall of the convergence chamber 12, the split structure can be assembled without being affected by the connecting pipe 43 (for example, the explosion-proof housing 1 is provided with an upper and lower split structure, with the convergence chamber 12 area as the cover. After the infrared laser generating component 2 and the air inlet pipe structure 42 are pre-installed, the connecting pipe 43 is bent and pressed in the corresponding area, and then the air outlet pipe structure 41 is passed through and installed on the top plate of the convergence chamber 12, and then the cover is buckled. At this time, each connecting pipe 43 can be adaptively deformed without hindering the cover from being closed). In addition, the connecting pipe 43 can also adopt a flexible pipe structure, such as a thin pipe structure made of high-temperature resistant rubber.

[0039] Further, to enhance the air flow heat dissipation effect in the connecting pipe group 4, the present embodiment also provides the following technical solution. Referring to the accompanying Figure 3 drawings, a fan assembly is further provided in the air inlet area 13. The fan assembly includes a fan 5 which is rotatably arranged in the air inlet area 13. Among them, each air inlet pipe structure 42 is located at the rear side of the fan 5 (i.e., the side of the fan 5 close to the inner cavity of the explosion-proof housing 1). The fan assembly further includes a fan motor 51 which is fixedly installed inside the partition plate 14. The output shaft of the fan motor 51 penetrates through the partition plate 14 and is fixedly connected to the fan 5. A seal such as an O-ring is provided between the output shaft of the fan motor 51 and the partition plate 14, so that the fan motor 51 is also located in the inner cavity of the explosion-proof housing 1, realizing the isolation of the electrical connection point of the fan motor 51 from the outside, and further realizing the synchronous protection of the fan motor 51.

[0040] At the same time, in order to prevent external sundries from blocking the air inlet pipe structure 42 and also prevent the occurrence of accidents in the external environment such as explosion, resulting in flying stones and other structures hitting the fan 5 and causing damage to it, the present embodiment also fixedly installs a protective net plate 15 at the external port of the air inlet area 13. The protective net plate 15 is a thick metal plate structure with a mesh structure.

[0041] In the above embodiment, the laser output lens 21 can be directly fixedly installed in the laser output port 11 and a corresponding sealing structure is provided. However, based on this solution, the outermost lens of the laser output lens 21 is directly exposed. If an accident occurs in the external environment, resulting in an explosion and generating flying stones, and the flying stones directly hit the lens of the laser output lens 21, on the one hand, it will cause damage to the laser output lens 21, and on the other hand, it will cause the explosion-proof housing 1 to communicate with the outside through the laser output lens 21, and cause damage to the corresponding electronic components of the infrared laser generating assembly 2, forming electric sparks or even small explosions. At this time, since an accident has occurred in the external environment and flammable substances already exist around the outside of the explosion-proof housing 1, it is more likely to cause a secondary explosion caused by the infrared laser generating assembly 2, reducing the protection effect.

[0042] Therefore, to solve the above problems, the present embodiment also provides the following technical solution. Referring to the accompanying Figure 4, a lens protection component is provided in the laser output port 11. The lens protection component includes a protection lens 16. An external fixed installation of the protection lens 16 is a piston lens frame 161. The piston lens frame 161 is slidably arranged in the laser output port 11. And a sealing structure is provided between the piston lens frame 161 and the laser output port 11. At the same time, a buffer elastic member 162 is provided between the piston lens frame 161 and the laser output port 11. The buffer elastic member 162 is used to provide an elastic force for the piston lens frame 161 to move outward from the laser output port 11, thereby forming a buffer support. Even if there is a flying stone impact, it will first impact on the protection lens 16, and according to the elastic buffer of the buffer elastic member 162, the impact force will be buffered, thereby forming a certain protection for the laser output lens 21, and also reducing the probability of the protection lens 16 being broken, improving the protection performance of the module.

[0043] Further, in the above embodiment, since the explosion-proof housing 1 is relatively isolated inside and outside, and the amount of internal air is certain, when there is a large temperature difference in the module, the internal air pressure will also change. Especially when an accident occurs and there is a flying stone impact on the protection lens 16, since the protection lens 16 and the piston lens frame 161 form a piston structure, the protection lens 16 will compress the air inside the explosion-proof housing 1. At the same time, the internal air pressure of the explosion-proof housing 1 increases. On the one hand, it is easy to block the buffer movement of the protection lens 16. On the other hand, too high air pressure will affect the normal operation of some electronic components. For this reason, a pressure relief structure is also provided in the explosion-proof housing 1 in this embodiment. Refer to the attached Figure 5 , this embodiment provides a solution for one of the pressure relief structures. The pressure relief structure includes a fixed air outlet pipe 411. The fixed air outlet pipe 411 is one of the air outlet pipe structures 41. The fixed air outlet pipe 411 is fixedly installed in the top wall of the converging chamber 12. An elastic capsule 44 (made of high-temperature resistant rubber or other high-temperature resistant elastic materials) is connected between the fixed air outlet pipe 411 and the connecting pipe 43. The elastic capsule 44 has the elasticity to maintain the initial state. Therefore, when the internal air pressure of the explosion-proof housing 1 changes, the elastic capsule 44 will produce corresponding deformation to adapt to the air pressure, thereby avoiding excessive internal air pressure in the explosion-proof housing 1.

[0044] In addition, refer to the attached Figure 6, this embodiment also provides another pressure relief structure, which includes a floating exhaust pipe 412. The floating exhaust pipe 412 is also one of the exhaust pipe structures 41. A piston hole 122 is provided in the top wall of the converging chamber 12. A floating piston 45 is fixedly installed outside the floating exhaust pipe 412. The floating piston 45 is slidably installed in the piston hole 122 to form a piston structure. An elastic limiting member 123 (such as an elastic ring or an elastic protrusion) is provided at the bottom of the piston hole 122, and a rigid limiting structure is provided at the top of the piston hole 122. During installation, the floating exhaust pipe 412 is inserted into the piston hole 122 from bottom to top so that the floating piston 45 can cross the elastic limiting member 123. When the air pressure inside the explosion-proof housing 1 changes, the floating piston 45 can produce corresponding floating to adapt to the air pressure inside the explosion-proof housing 1. The size of the piston hole 122 can be set according to requirements to ensure that the floating piston 45 does not protrude from the piston hole 122 under the maximum change range of the air pressure inside the explosion-proof housing 1.

[0045] It should be noted that the above two pressure relief structure solutions are not mutually independent. They can be used alone or in combination. The number of the connecting pipe groups 4 does not need to be as dense as shown in the attached drawings of this application specification. The actual number and size of the connecting pipe groups 4 can be set according to requirements, and the number of the corresponding fixed exhaust pipes 411 and floating exhaust pipes 412 can be set. The rest of the exhaust pipe structures 41 all adopt relatively long downward extending structures to ensure effective heat exchange.

[0046] Further, referring to the attached drawings of the specification Figure 5 , a retaining flange 121 is fixedly connected to the edge of the top wall of the converging chamber 12. The height of the retaining flange 121 is higher than the height of the part of the exhaust pipe structure 41 outside the top wall of the converging chamber 12. Thus, a water collecting trough is formed at the top of the converging chamber 12 under the enclosure of the retaining flange 121. When it rains, rainwater can flow reversely through the exhaust pipe structure 41. Further enhancing the heat dissipation effect.

[0047] It should be noted that the above solutions are all based on the fact that the air or other gases remain in the inner cavity of the explosion-proof housing 1. However, since the explosion-proof housing 1 is relatively sealed, therefore, in order to improve the protection effect, a liquid can also be injected into the explosion-proof housing 1 to improve the heat dissipation effect, such as injecting a hydraulic oil or other liquids that do not affect the use of electronic components.

[0048] Further, referring to the attached drawings of the specification Figure 1The base assembly 3 includes a support plate 31, and the explosion-proof shell 1 is installed on the support plate 31. The base assembly 3 also includes a mounting seat 32, a Z-axis rotation adjustment assembly 33 and a Y-axis rotation adjustment assembly 34. The mounting seat 32 is used to connect with the mounting equipment in the module usage scenario. The Z-axis rotation adjustment assembly 33 is installed on the mounting seat 32 to adjust the left and right directions of the explosion-proof shell 1. The Y-axis rotation adjustment assembly 34 is installed on the Z-axis rotation adjustment assembly 33 to adjust the pitch angle of the explosion-proof shell 1. The support plate 31 is fixedly installed on the Y-axis rotation adjustment assembly 34, wherein the Z-axis rotation adjustment assembly 33 and the Y-axis rotation adjustment assembly 34 are both ordinary rotation adjustment assemblies, such as servo motors. The difference is that a corresponding explosion-proof protection structure is also provided on the outside of the assembly.

[0049] In this embodiment, the explosion-proof housing 1 can be directly fixedly connected to the support plate 31, but this solution is not suitable for accidents. For example, the explosion direction is located in front of the infrared laser generating assembly 2, and the flying stones also come to the front, and the weakest part of the module itself is located in the front. Therefore, if there is continuous flying stones, there is a possibility of accidents. Therefore, this embodiment also provides the following solution, refer to the attached manual Figures 7 to 10 A self-locking shaft 18 is fixedly connected to the bottom of the explosion-proof shell 1, and a self-locking sleeve 35 is fixedly installed in the support plate 31. The self-locking shaft 18 passes through the self-locking sleeve 35 and rotates with the self-locking sleeve 35. An inner sleeve ring 351 is rotatably installed on the outer side of the self-locking shaft 18, and an outer sleeve ring 352 is arranged in the self-locking sleeve 35. The inner sleeve ring 351 is located on the inner side of the outer sleeve ring 352, and multiple groups of centering elastic members 353, such as springs, are arranged between the outer sleeve ring 352 and the inner sleeve ring 351. The multiple groups of centering elastic members 353 are used to provide an elastic force for the self-locking shaft 18 to be coaxial with the self-locking sleeve 35, so that the self-locking shaft 18 and the self-locking sleeve 35 are coaxially arranged without external force. At the same time, the self-locking A locking cam 181 is fixedly connected to one side of the rotating shaft 18 close to the laser output port 11. The locking cam 181 can be an elastic structure. A plurality of engaging grooves 354 are arranged in the inner wall of the self-locking sleeve 35. The locking cam 181 engages with the engaging grooves 354. When subjected to external impact, especially when the front of the laser output port 11 is impacted, the explosion-proof housing 1 can relatively retreat, and the locking cam 181 leaves the engaging groove 354. At this time, if the impact force at the impact point is offset, the explosion-proof housing 1 can be driven to deflect, so that the laser output port 11 deviates from the direction of the flying stone point (the explosion-proof housing 1 of this module is thick in texture, so when it rotates, it can rotate a certain angle due to inertia).

[0050] In addition, to enhance the deflection effect of the explosion-proof housing 1 during the impact of flying stones, the present embodiment further provides the following solution. The self-locking rotating shaft 18 is arranged away from the laser output port 11, and sailboards 17 are fixedly connected to both sides of the explosion-proof housing 1. Therefore, the distance between the laser output port 11 and the rotation center is relatively large, and it is more likely to generate deflection during impact. It is almost impossible to have a force along the length direction of the laser output port 11, that is, along the lever arm direction of the laser output port 11 from the self-locking rotating shaft 18. Most of them will deviate. Even if there are flying stones along the length direction of the laser output port 11, when the flying stones hit the sailboards 17, the explosion-proof housing 1 will also generate deflection, and try to make the side wall (with higher strength) direction of the explosion-proof housing 1 face the flying stone point to improve the protection effect.

[0051] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An infrared laser module with an explosion-proof structure, comprising an explosion-proof housing (1), an infrared laser generating assembly (2) and a base assembly (3), wherein the infrared laser generating assembly (2) is installed inside the explosion-proof housing (1), and is characterized in that: A convergence chamber (12) is provided on the top of the explosion-proof housing (1); A connecting pipe group (4) is further provided in the explosion-proof housing (1), and an air inlet area (13) is further provided on the explosion-proof housing (1). The air inlet area (13) is provided in an area of ​​the explosion-proof housing (1) away from the infrared laser generating assembly (2), and a partition plate (14) is fixedly installed in the air inlet area (13); The connecting pipe group (4) comprises an air outlet pipe structure (41) and an air inlet pipe structure (42), wherein the air outlet pipe structure (41) and the air inlet pipe structure (42) are connected via a connecting pipe (43), the top of the air outlet pipe structure (41) penetrates the top wall of the convergence chamber (12) and is connected to the outside, and the air outlet pipe structure (41) is arranged to extend downward in the convergence chamber (12), and the air inlet pipe structure (42) penetrates the partition plate (14) and is connected to the outside; The edge of the top wall of the convergence chamber (12) is fixedly connected with a blocking flange (121), the height of the blocking flange (121) being higher than the height of the air outlet pipe structure (41) located at the outer portion of the top wall of the convergence chamber (12), so that the top of the convergence chamber (12) forms a water collecting trough under the blocking of the blocking flange (121), the air outlet pipe structure (41) is a metal heat-conducting structure, and the connecting pipe (43) is arranged in the explosion-proof housing (1) near the heating area of ​​the infrared laser generating assembly (2); A fan assembly is also provided in the air inlet area (13), the fan assembly comprising a fan (5), the fan (5) being rotatably provided in the air inlet area (13), each of the air inlet pipe structures (42) being located at the rear side of the fan (5), the fan assembly further comprising a fan motor (51), the fan motor (51) being fixedly mounted on the inner side of the partition plate (14), the output shaft of the fan motor (51) passing through the partition plate (14) and being fixedly connected to the fan (5), and a sealing member being provided between the output shaft of the fan motor (51) and the partition plate (14).

2. The infrared laser module with explosion-proof structure according to claim 1, characterized in that: The infrared laser generating assembly (2) comprises a laser output lens (21); the explosion-proof housing (1) is provided with a laser output port (11); the laser output port (11) is a protruding cylindrical structure; the laser output lens (21) of the infrared laser generating assembly (2) is located in the laser output port (11).

3. The infrared laser module with explosion-proof structure according to claim 2, characterized in that: A lens protection assembly is arranged in the laser output port (11), the lens protection assembly comprising a protection lens (16), a piston lens frame (161) is fixedly mounted on the outside of the protection lens (16), the piston lens frame (161) is slidably arranged in the laser output port (11), a sealing structure is arranged between the piston lens frame (161) and the laser output port (11), and a buffer elastic member (162) is arranged between the piston lens frame (161) and the laser output port (11).

4. The infrared laser module with explosion-proof structure according to claim 3, characterized in that: A pressure relief structure is provided in the explosion-proof housing (1), the pressure relief structure comprising a fixed air outlet pipe (411), the fixed air outlet pipe (411) also being connected to a connecting pipe (43) and an air inlet pipe structure (42), the fixed air outlet pipe (411) being fixedly installed in the top wall of the convergence chamber (12), and an elastic sac (44) being connected between the fixed air outlet pipe (411) and the connecting pipe (43).

5. The infrared laser module with explosion-proof structure according to claim 4, characterized in that: The pressure relief structure further comprises a floating air outlet pipe (412), the floating air outlet pipe (412) is also connected to a connecting pipe (43) and an air inlet pipe structure (42), a piston hole (122) is provided in the top wall of the convergence chamber (12), a floating piston (45) is fixedly installed on the outside of the floating air outlet pipe (412), the floating piston (45) is slidably installed in the piston hole (122) to form a piston structure, and an elastic limiter (123) is provided at the bottom of the piston hole (122).

6. The infrared laser module with explosion-proof structure according to claim 5, characterized in that: The base assembly (3) comprises a support plate (31), the explosion-proof housing (1) is mounted on the support plate (31), the base assembly (3) further comprises a mounting seat (32), a Z-axis rotation adjustment assembly (33) and a Y-axis rotation adjustment assembly (34), the Z-axis rotation adjustment assembly (33) being mounted on the mounting seat (32), the Y-axis rotation adjustment assembly (34) being mounted on the Z-axis rotation adjustment assembly (33), and the support plate (31) being fixedly mounted on the Y-axis rotation adjustment assembly (34).

7. The infrared laser module with explosion-proof structure according to claim 6, characterized in that: A self-locking shaft (18) is fixedly connected to the bottom of the explosion-proof housing (1), a self-locking sleeve (35) is fixedly installed in the support plate (31), the self-locking shaft (18) passes through the self-locking sleeve (35) and rotatably cooperates with the self-locking sleeve (35), an inner sleeve ring (351) is rotatably installed on the outer side of the self-locking shaft (18), an outer sleeve ring (352) is provided in the self-locking sleeve (35), the inner sleeve ring (351) is located on the inner side of the outer sleeve ring (352), and a plurality of groups of centering elastic members (353) are provided between the outer sleeve ring (352) and the inner sleeve ring (351), a locking convex key (181) is fixedly connected to a side of the self-locking shaft (18) close to the laser output port (11), a plurality of groups of engaging grooves (354) are provided in the inner wall of the self-locking sleeve (35), and the locking convex key (181) and the engaging grooves (354) are engaged with each other.

8. The infrared laser module with explosion-proof structure according to claim 7, characterized in that: The self-locking rotating shaft (18) is arranged away from the laser output port (11), and sailboards (17) are fixedly connected to both sides of the explosion-proof housing (1).

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