Camera

Abstract

The invention provides a camera. The camera comprises an explosion-proof assembly and a thermal imaging intrinsic safety assembly. The explosion-proof assembly comprises an explosion-proof shell and a main control board arranged in the explosion-proof shell. The thermal imaging intrinsic safety assembly and the explosion-proof shell are assembled in a sealed mode and located outside the explosion-proof shell. The thermal imaging intrinsic safety assembly comprises a base, a thermal imaging intrinsic safety detector and a thermal imaging lens. The thermal imaging lens and the thermal imaging intrinsic safety detector are assembled on the two opposite sides of the base respectively. Wherein the thermal imaging lens is located on the side, away from the explosion-proof shell, of the base relative to the thermal imaging intrinsic safety detector, and the intrinsic safety detector is electrically connected with the main control board. According to the camera, the explosion-proof assembly and the thermal imaging intrinsic safety assembly are combined, the main control board is sealed in the explosion-proof shell, the thermal imaging intrinsic safety detector and the thermal imaging lens are integrated outside the explosion-proof shell, on the basis that the explosion-proof requirement is met, an expensive thermal imaging window and an explosion-proof thermal imaging lens can be omitted in the explosion-proof shell, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of monitoring equipment, and in particular to a camera. Background Art

[0002] In recent years, with the continuous development of society, the requirements for fire and explosion prevention of monitoring equipment have been continuously improved. Therefore, the fire and explosion prevention of monitoring equipment has become an important guarantee for safety work. In order to meet the explosion-proof requirements, ordinary cameras often use expensive explosion-proof lenses or windows in the explosion-proof housing, which is very expensive. Summary of the invention

[0003] The present application provides an improved camera.

[0004] The present application provides a camera, comprising:

[0005] A flameproof assembly, comprising a flameproof housing and a main control panel arranged in the flameproof housing; and

[0006] A thermal imaging intrinsically safe component is sealed and assembled with the flameproof enclosure and is located outside the flameproof enclosure; the thermal imaging intrinsically safe component includes a base, a thermal imaging intrinsically safe detector and a thermal imaging lens, the thermal imaging lens and the thermal imaging intrinsically safe detector are respectively assembled on opposite sides of the base, the thermal imaging lens is located on a side of the base away from the flameproof enclosure relative to the thermal imaging intrinsically safe detector, and the thermal imaging intrinsically safe detector is electrically connected to the main control board.

[0007] Preferably, a plurality of devices are provided on a side of the thermal imaging intrinsically safe detector facing away from the base, and surfaces of the plurality of devices are wrapped by adhesive sealing.

[0008] Preferably, the inductance value in the thermal imaging intrinsically safe detector is set to 40uj at most.

[0009] Preferably, the capacitance value in the thermal imaging intrinsically safe detector is set to 50uj at most.

[0010] Preferably, an electrical gap of a preset distance is provided between the thermal imaging intrinsically safe detector and the thermal imaging lens, so that the thermal imaging intrinsically safe detector and the thermal imaging lens are insulated from each other.

[0011] Preferably, the thermal imaging lens is wrapped by an insulating material so that the thermal imaging lens and the base are insulated from each other.

[0012] Preferably, the flameproof enclosure comprises a front shell and a barrel, the front shell is located at the front end face of the barrel; the front shell is sealed and connected to the barrel to form a flameproof cavity, and the main control board is assembled in the flameproof cavity; and the front end face of the front shell is provided with a concave cavity and a notch connected to the concave cavity, the thermal imaging intrinsically safe detector and the thermal imaging lens are both assembled in the concave cavity through the base, and the thermal imaging lens is arranged close to the notch relative to the thermal imaging intrinsically safe detector, and is aligned with the notch and sealed and assembled.

[0013] Preferably, the front shell is recessed on one side of the cylinder body to form the concave cavity, the concave cavity and the flameproof cavity are isolated from each other by a portion of the front shell, and the flameproof cavity is surrounded by the circumference of the concave cavity.

[0014] Preferably, the concave cavity includes a first concave cavity and a second concave cavity connected to the notch, and the first concave cavity and the second concave cavity are arranged in the axial direction of the concave cavity; the thermal imaging intrinsically safe detector, the thermal imaging lens and the base are all assembled in the first concave cavity, and the second concave cavity is filled with potting glue, and the potting glue seals the first concave cavity and the explosion-proof cavity.

[0015] Preferably, the thermal imaging intrinsically safe detector includes an intrinsically safe data line, the intrinsically safe data line passes through the potting glue and is electrically connected to the main control board, and the potting glue seals the intrinsically safe data line.

[0016] Preferably, the inner wall of the concave cavity is stepped, and the radial dimension of the first concave cavity is larger than the radial dimension of the second concave cavity.

[0017] Preferably, the dimension of the potting glue in the axial direction of the cavity is at least 20 mm.

[0018] Preferably, the front shell includes a front shell front end face and a front shell joint surface and a concave cavity forming surface connected to the front shell front end face; the barrel includes a barrel joint surface and a barrel rear wall connected to the barrel joint surface; the front shell joint surface is embedded in the barrel joint surface; wherein the front shell front end face, the front shell joint surface, the concave cavity forming surface, the barrel joint surface and the barrel rear wall together form the explosion-proof cavity, and the concave cavity is formed in the area where the concave cavity forming surface is away from the explosion-proof cavity.

[0019] Preferably, a potting groove is provided on the rear wall of the barrel; the potting groove is filled with potting glue, and the potting glue seals the explosion-proof cavity; the main control board includes a main control data line, and the main control data line passes through the potting glue in the potting groove and is connected to an external circuit.

[0020] Preferably, the front end surface of the front shell, the front shell joint surface and the concave cavity forming surface are integrally arranged.

[0021] Preferably, the barrel joint surface is integrally arranged with the barrel rear wall.

[0022] The camera of the embodiment of the present application. The camera is provided with a flameproof component and a thermal imaging intrinsically safe component which is sealed and assembled with the flameproof shell and is located outside the flameproof shell. The flameproof component includes a flameproof shell and a main control board arranged in the flameproof shell. The thermal imaging intrinsically safe component includes a base, a thermal imaging intrinsically safe detector and a thermal imaging lens, the thermal imaging lens and the thermal imaging intrinsically safe detector are respectively assembled on opposite sides of the base, the thermal imaging lens is located on the side of the base away from the flameproof shell relative to the thermal imaging intrinsically safe detector, and the thermal imaging intrinsically safe detector is electrically connected to the main control board. The camera of the present application combines the flameproof component and the thermal imaging intrinsically safe component, the thermal imaging intrinsically safe component is sealed and assembled with the flameproof shell and is arranged outside the flameproof shell, the main control board is sealed in the flameproof shell, the thermal imaging intrinsically safe detector and the thermal imaging lens are integrated outside the flameproof shell, on the basis of meeting the explosion-proof requirements, the expensive thermal imaging window and the flameproof thermal imaging lens in the flameproof shell can be discarded, the cost is reduced, so as to realize the development of low-cost explosion-proof cameras. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic structural diagram of a viewing angle of the camera of the present application.

[0024] Figure 2 Shown Figure 1 A schematic structural diagram of another viewing angle of the camera shown.

[0025] Figure 3 Shown Figure 1 A cross-sectional view of the camera is shown.

[0026] Figure 4 Shown Figure 3 A cross-sectional view of the explosion-proof assembly of the camera is shown.

[0027] Figure 5 Shown Figure 3 A cutaway view of the thermal imaging intrinsically safe components of the camera is shown.

[0028] Figure 6 Shown is a structural schematic diagram of an embodiment of the pan-tilt device of the present application.

[0029] The reference numerals are as follows:

[0030] Camera 1, flameproof assembly 11, flameproof housing 111, main control board 112, main control data line 1121, front shell 113, front shell front end face 1131, front shell joint surface 1132, cavity forming surface 1133, barrel 114, barrel joint surface 1141, barrel rear wall 1142, potting groove 1143, flameproof cavity 115, cavity 116, first cavity 1161, second cavity 1162, notch 117, visible light window 118, thermal imaging intrinsically safe assembly 12, base 121, thermal imaging intrinsically safe detector 122, device 1221, intrinsically safe data line 1222, thermal imaging lens 123, potting glue A, axial direction B of the cavity, radial direction C of the cavity, pan / tilt device 2, moving device 21. DETAILED DESCRIPTION

[0031] The camera of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0032] Figure 1 Shown is a schematic structural diagram of a viewing angle of the camera 1 of the present application. Figure 2 Shown Figure 1 The structure diagram of the camera 1 from another viewing angle is shown. Figure 3 Shown Figure 1 A cross-sectional view of the camera 1 is shown. Figure 4 Shown Figure 3 A cross-sectional view of the flameproof assembly 11 of the camera 1 is shown. Figure 5 Shown Figure 3 A cross-sectional view of the thermal imaging intrinsically safe component 12 of the camera 1 is shown.

[0033] Combination Figures 1 to 5 As shown, the camera 1 includes a flameproof component 11 and a thermal imaging intrinsically safe component 12. The flameproof component 11 includes a flameproof housing 111 and a main control board 112 arranged in the flameproof housing 111. The thermal imaging intrinsically safe component 12 is sealed and assembled with the flameproof housing 111 and is located outside the flameproof housing 111. The thermal imaging intrinsically safe component 12 includes a base 121, a thermal imaging intrinsically safe detector 122 and a thermal imaging lens 123. The thermal imaging lens 123 and the thermal imaging intrinsically safe detector 122 are respectively assembled on opposite sides of the base 121. Among them, the thermal imaging lens 123 is located on a side of the base 121 away from the flameproof housing 111 relative to the thermal imaging intrinsically safe detector 122. The thermal imaging lens 123 is arranged relative to the thermal imaging intrinsically safe detector 122 toward the front end surface of the flameproof housing 111, and the thermal imaging intrinsically safe detector 122 is electrically connected to the main control board 112.

[0034] In this embodiment, the base 121 of the thermal imaging intrinsically safe component 12 is used to fix and assemble the thermal imaging intrinsically safe detector 122 and the thermal imaging lens 123. The thermal imaging lens 123 can select an imaging lens with a working wavelength of 8 to 14um. The thermal imaging intrinsically safe detector 122 can be used as the intrinsically safe movement of the thermal imaging intrinsically safe component 12, which is used to convert the infrared radiation energy distribution of the object into an electronic image visible to the human eye, and then transmit the processed image data to the main control board 112. The main control board 112 receives the image data sent by the thermal imaging intrinsically safe detector 122 for processing. When processing the data, it may cause an explosion due to the generation of electric sparks and ignition of explosive gases. The flameproof housing 111 of the present application seals the main control board 112 inside, isolates the main control board 112 from the external flammable and explosive environment, and reduces the possibility of explosion caused by the generation of electric sparks igniting explosive gases. In the above scheme, the flameproof component 11 is provided with the flameproof housing 111 and the main control board 112, and the main control board 112 is sealed in the flameproof housing 111. The flameproof enclosure 111 can withstand the pressure generated by the explosion of the main control board 112 installed therein due to the ignition of the explosive mixture, and prevent the explosion from spreading to the outside, thereby isolating the main control board 112 from the external environment. The thermal imaging intrinsically safe component 12 is called an intrinsically safe component. The thermal imaging intrinsically safe component 12 can limit the energy of electric sparks or thermal effects that may be generated by the flameproof component 11 and the connecting wires exposed to the explosive environment to a level that cannot cause ignition.

[0035] The camera 1 of the present application combines an explosion-proof component 11 and a thermal imaging intrinsically safe component 12, and the thermal imaging intrinsically safe component 12 is sealed and assembled with the explosion-proof housing 111 and arranged outside the explosion-proof housing 111, and the main control board 112 is sealed in the explosion-proof housing 111, and the thermal imaging intrinsically safe component 12 is integrated with a thermal imaging intrinsically safe detector 122 and a thermal imaging lens 123. On the basis of meeting the explosion-proof requirements, the expensive thermal imaging window and the explosion-proof thermal imaging lens in the explosion-proof housing 111 can be discarded, thereby reducing costs and realizing the development of a low-cost explosion-proof camera 1, so that the explosion-proof camera 1 can be used in an explosive environment with high safety.

[0036] exist Figures 1 to 5 In the illustrated embodiment, the thermal imaging intrinsically safe detector 122 is fixed to the base 121 by means of screws or adhesives. The thermal imaging lens 123 is fixed to the base 121 by means of thread locking or adhesives. The fixing by means of screws or adhesives is firm and has good stability.

[0037] exist Figures 1 to 5In the illustrated embodiment, the surface of the thermal imaging lens 123 is wrapped with an insulating material, so that the thermal imaging lens 123 is insulated from the base 121. The insulating material may be insulating paint or other insulating materials, without limitation. The surface of the thermal imaging lens 123 is wrapped with insulating paint or other insulating materials, so that the thermal imaging lens 123 is insulated from the base 121, and the thermal imaging lens 123 is also insulated from the thermal imaging intrinsically safe detector 122, thereby improving safety.

[0038] exist Figures 1 to 5 In the illustrated embodiment, there is an electrical gap of a preset distance between the thermal imaging intrinsically safe detector 122 and the thermal imaging lens 123, so that the thermal imaging intrinsically safe detector 122 and the thermal imaging lens 123 are insulated from each other. An appropriate electrical gap is set between the thermal imaging intrinsically safe detector 122 and the thermal imaging lens 123 to improve the insulation between the thermal imaging intrinsically safe detector 122 and the thermal imaging lens 123 and improve safety. The above electrical gap can be designed according to actual needs and is not limited in this application.

[0039] exist Figures 1 to 5 In the illustrated embodiment, a plurality of devices 1221 are provided on the side of the thermal imaging intrinsically safe detector 122 facing away from the base 121, and the surfaces of the plurality of devices 1221 are wrapped by glue sealing. The devices 1221 here can be high-power devices or low-power devices, without limitation. The side of the thermal imaging intrinsically safe detector 122 where the device is provided is glue-sealed, and on the basis of meeting the requirements of the IIC ibT6 / IIIC ib T6 explosion-proof standards, the device surface temperature of the thermal imaging intrinsically safe detector 122 can be set to 85°C at most as required by T6, thereby reducing heat. The glue sealing treatment here can be thermal glue sealing to meet the temperature requirements.

[0040] exist Figures 1 to 5 In the illustrated embodiment, the inductance value in the thermal imaging intrinsically safe detector 122 is set to 40uJ at most. The capacitance value in the thermal imaging intrinsically safe detector 122 is set to 50uJ at most. Compared with related detectors, the inductance value and the capacitance value are both small, which can meet the requirements of IIC ib T6 / IIIC ib T6 explosion-proof standards.

[0041] In this embodiment, the inductance value of the thermal imaging intrinsically safe detector 122 can be represented by 1 / 2L(KU / R)2, and its size is ≤40uj. Wherein L represents inductance, which is a physical quantity that measures the ability of a coil to generate electromagnetic induction, and its unit is Henry (H). The thermal imaging intrinsically safe detector 122 reflects the characteristics of the inductance element in the detector circuit. U represents voltage, which is the reason for driving the directional movement of charges to form current, and its unit is volt (V). The thermal imaging intrinsically safe detector 122 refers to the relevant voltage value when the detector is working. R represents resistance, which is the magnitude of the conductor's resistance to current, and its unit is ohm (Ω). The thermal imaging intrinsically safe detector 122 refers to the resistance value or equivalent resistance of the resistor element in the circuit. K can be a coefficient related to the circuit characteristics or system. 40uj can be expressed as the limit value of the inductance energy, and its unit is microjoule. This inductance value represents the maximum inductance energy allowed by the thermal imaging intrinsically safe detector 122 of the thermal imaging intrinsically safe component 12, ensuring that energy sufficient to ignite explosive gas will not be generated under this condition.

[0042] In this embodiment, the capacitance value of the thermal imaging intrinsically safe detector 122 can be represented by 1 / 2CU2, and its size is ≤50uj. Wherein C represents capacitance, which is a physical quantity that characterizes the ability of a capacitor to hold charge, and its unit is farad (F). The thermal imaging intrinsically safe detector 122 refers to the capacitance value or equivalent capacitance of the capacitive element in the circuit. U is also a voltage, which is similar to the meaning in the inductance value formula, and is the voltage related to the capacitance in the detector circuit. 50uj is also the limiting value of the capacitance energy, and its unit is microjoule. This capacitance value represents the maximum capacitance energy allowed by the thermal imaging intrinsically safe detector 122 of the thermal imaging intrinsically safe component 12, ensuring that the energy stored in the capacitor of the thermal imaging intrinsically safe detector 122 will not cause danger when it is working.

[0043] The above-mentioned thermal imaging intrinsically safe detector 122 has smaller inductance and capacitance values ​​than related detectors, and can meet the requirements of IIC ib T6 / IIIC ib T6 explosion-proof standards. The camera 1 of the present application is provided with a thermal imaging intrinsically safe component 12 having the above-mentioned thermal imaging intrinsically safe detector 122. Compared with related cameras, the thermal imaging intrinsically safe component 12 meets the requirements of IIC ib T6 and IIIC ib T6 explosion-proof standards by controlling electrical gaps, reducing the power consumption and temperature rise of the detector, and encapsulating and isolating. In the case of meeting the requirements of explosion-proof standards, the thermal imaging intrinsically safe component 12 can select a low-cost thermal imaging lens 123, and the explosion-proof component 11 does not need to be provided with expensive windows and explosion-proof lenses, thus forming a low-cost camera that takes both intrinsic safety and explosion-proof into account.

[0044] It should be noted that explosion-proof equipment category IIC is explosion-proof equipment suitable for hydrogen and acetylene gas environments, and is also compatible with IIA / IIB scenarios. Explosion-proof equipment category IIIC is explosion-proof equipment suitable for dust and flammable flying catkins environments, and is also compatible with IIIA / IIIB scenarios. Equipment protection level ib means that the equipment has a "high" protection level and is not an ignition source under normal operation or expected failure conditions. It is difficult for cameras in related technologies to meet the requirements of IIC ib T6 and IIIC ib T6 explosion-proof standards.

[0045] exist Figures 1 to 5 In the illustrated embodiment, the flameproof housing 111 includes a front shell 113 and a barrel 114, wherein the front shell 113 is assembled to the barrel 114 and is located at the front end face of the barrel 114. The front end face can be understood as an end face that can obtain infrared radiation energy of objects in the external environment. The front shell 113 is sealed and connected to the barrel 114 to form a flameproof cavity 115, and the main control board 112 is assembled in the flameproof cavity 115. In this way, the flameproof cavity 115 formed by the front shell 113 and the barrel 114 can isolate the main control board 112 from the external environment, and can reduce the possibility of explosion caused by the main control board 112 generating electric sparks to ignite explosive gas.

[0046] exist Figures 1 to 5 In the illustrated embodiment, the front end surface of the front shell 113 is provided with a concave cavity 116 and a notch 117 connected to the concave cavity 116. The thermal imaging intrinsically safe detector 122 and the thermal imaging lens 123 are assembled in the concave cavity 116 through the base 121. The thermal imaging lens 123 is arranged close to the notch 117 relative to the thermal imaging intrinsically safe detector 122, and is aligned and sealed with the notch 117. In this embodiment, a thermal imaging window may not be provided at the notch 117 to save costs. In some other embodiments, an ordinary thermal imaging window may be provided at the notch 117 to play a protective role, which is lower in cost than the explosion-proof thermal imaging window in the related art. The thermal imaging lens 123 is aligned and sealed with the notch 117 to play a dustproof and waterproof role. The concave cavity 116 mainly seals the thermal imaging intrinsically safe detector 122 inside to meet the explosion-proof requirements. Through the explosion-proof component 11 and the thermal imaging intrinsically safe component 12, when the explosion-proof requirements are met, the thermal imaging lens 123 and the thermal imaging intrinsically safe detector 122 are integrated into the thermal imaging intrinsically safe component 12 and are located outside the explosion-proof component 11, so that the explosion-proof component 11 can abandon the expensive thermal imaging window and explosion-proof thermal imaging lens, and realize a low-cost explosion-proof camera 1.

[0047] In this embodiment, the camera 1 further includes a visible light window 118 and a visible light module (not shown) arranged corresponding to the visible light window 118. The visible light window 118 is arranged at the front end surface of the flameproof housing 111, and the visible light module is arranged inside the flameproof housing 111. The window 118 can be an impact-resistant visible light window, which is staggered with the thermal imaging lens 123 of the thermal imaging intrinsically safe component 12. The visible light module is responsible for capturing the visible light information in the scene. The visible light window provides a channel for the light to enter the camera, and performs preliminary filtering and refraction on the light, which plays a protective role, ensures that the light quality entering the camera 1 is good, and enables the camera to capture clear and accurate images that reflect the real situation of the scene, including rich information such as the color, shape, and details of the object, which will not be described in detail. Since the inductance and capacitance of the thermal imaging intrinsically safe detector 122 of the thermal imaging intrinsically safe component 12 are relatively low and can meet the explosion-proof requirements, in this embodiment, the explosion-proof component 11 can abandon the expensive thermal imaging window and explosion-proof thermal imaging lens to reduce costs. The thermal imaging intrinsically safe component 12 can also use low-cost visible light windows, visible light modules and thermal imaging lenses, and use them in combination with the thermal imaging intrinsically safe detector 122 to reduce the cost of the entire camera 1.

[0048] exist Figures 1 to 5 In the illustrated embodiment, the front shell 113 includes a front shell front end face 1131, a front shell joint face 1132 connected to the front shell front end face 1131, and a concave cavity forming face 1133. The front shell front end face 1131, the front shell joint face 1132, and the concave cavity forming face 1133 are enclosed together to form the front shell 113. Among them, the front shell joint face 1132 and the concave cavity forming face 1133 are located on the same side of the front shell front end face 1131. In this embodiment, the front shell front end face 1131, the front shell joint face 1132, and the concave cavity forming face 1133 are integrally arranged. The front shell front end face 1131, the front shell joint face 1132, and the concave cavity forming face 1133 are integrally arranged or integrally formed, which improves the integration of the front shell 113, has a simple structure, and is easy to assemble.

[0049] exist Figures 1 to 5 In the illustrated embodiment, the barrel 114 comprises a barrel joint surface 1141 and a barrel rear wall 1142 connected with the barrel joint surface 1141. The barrel joint surface 1141 and the barrel rear wall 1142 are enclosed together to form the barrel 114. Wherein, the front shell joint surface 1132 is embedded in the barrel joint surface 1141 and is arranged. It can also be said that the front shell joint surface 1132 abuts against the inner side of the barrel joint surface 1141, and the two are sealed and connected. In the present embodiment, the barrel joint surface 1141 is integrally arranged with the barrel rear wall 1142. The barrel joint surface 1141 and the barrel rear wall 1142 are integrally arranged or integrally formed, which improves the integration of the barrel 114, and has a simple structure and is easy to assemble.

[0050] exist Figures 1 to 5In the embodiment shown, the front shell front end face 1131, the front shell joint surface 1132, the cavity forming surface 1133, the barrel joint surface 1141 and the barrel rear wall 1142 enclose a flameproof cavity 115. In this embodiment, the flameproof cavity 115 enclosed by the front shell front end face 1131, the front shell joint surface 1132, the cavity forming surface 1133, the barrel joint surface 1141 and the barrel rear wall 1142 has a simple structure and good sealing. The main control board 112 is enclosed in the flameproof cavity 115 to improve safety. Figures 1 to 5 In the embodiment shown, a cavity 116 is formed in the area of ​​the cavity forming surface 1133 away from the flameproof cavity 115. The cavity forming surface 1133 is stepped, so that the surrounding wall of the formed cavity 116 is stepped, which is convenient for assembling the thermal imaging intrinsically safe detector 122 and the base 121. The thermal imaging intrinsically safe detector 122 is sealed in the cavity 116 to meet the explosion-proof requirements. In this way, through the flameproof assembly 11 and the thermal imaging intrinsically safe assembly 12, on the basis of meeting the explosion-proof requirements, the flameproof assembly 11 can abandon the expensive thermal imaging window and the flameproof thermal imaging lens, thereby reducing costs.

[0051] exist Figures 1 to 5 In the illustrated embodiment, the front shell 113 is recessed on one side of the barrel 114 to form a concave cavity 116, and the concave cavity 116 is isolated from the flameproof cavity 115 by a portion of the front shell 113, and the flameproof cavity 115 is surrounded by the circumference of the concave cavity 116. The concave portion of the front shell 113 on one side of the barrel 114 may be formed by being recessed in the axial direction B of the concave cavity 116, in the direction extending from the front shell 113 toward the barrel 114. In this way, the concave cavity 116 is recessed in the flameproof housing 111, and the thermal imaging intrinsically safe component 12 is assembled in the concave cavity 116, so that the thermal imaging intrinsically safe component 12 is accommodated in a portion of the flameproof housing 111 and is isolated from the flameproof housing 111, thereby making the front end of the camera 1 flush, and making the front end of the camera 1 flush and beautiful, and smaller in size.

[0052] exist Figures 1 to 5 In the illustrated embodiment, the cavity 116 includes a first cavity 1161 and a second cavity 1162 which are connected to the notch 117. The first cavity 1161 and the second cavity 1162 are arranged on the axial direction B of the cavity 116. The thermal imaging intrinsically safe detector 122, the thermal imaging lens 123 and the base 121 are all assembled in the first cavity 1161. The second cavity 1162 is filled with potting glue A, and the potting glue A seals the first cavity 1161 and the flameproof cavity 115. The second cavity 1162 is connected to the flameproof cavity 115 on one side and is sealed by the potting glue A, so that the sealing effect between the first cavity 1161 and the flameproof cavity 115 is better, and the isolation between the first cavity 1161 and the flameproof cavity 115 is achieved, meeting the flameproof requirements. Figures 1 to 5In the embodiment shown, a potting groove 1143 is provided on the rear wall 1142 of the barrel. The potting groove 1143 is filled with potting glue A, and the potting glue A seals the flameproof cavity 115 to isolate the flameproof cavity 115 from the external environment. The potting groove 1143 is convexly arranged on the rear wall 1142 of the barrel, and the flameproof cavity 115 is sealed from the external environment by filling the potting glue A therein, thereby meeting the explosion-proof requirements.

[0053] exist Figures 1 to 5 In the illustrated embodiment, the thermal imaging intrinsically safe detector 122 includes an intrinsically safe data line 1222, which is electrically connected to the main control board 112 through the potting glue A, and the potting glue A seals the intrinsically safe data line 1222. The potting glue A seals the intrinsically safe data line 1222, thereby improving the sealing performance. Figures 1 to 5 In the embodiment shown, the main control board 112 includes a main control data line 1121, which is connected to an external circuit through a potting compound A in a potting groove 1143. The main control data line 1121 is sealed by the potting compound A, so that the sealing performance is better and the explosion-proof effect is improved.

[0054] exist Figures 1 to 5 In the illustrated embodiment, the dimension of the potting glue A in the axial direction B of the cavity 116 is at least 20 mm. The axial direction B of the cavity 116 may be perpendicular to the thermal imaging lens 123. The dimension of the potting glue A in the axial direction B of the cavity 116 may be set to 20 mm or more. This arrangement allows the isolation of the intrinsically safe data line 1222 to be better, thereby achieving a better explosion-proof effect. Similarly, the dimension of the potting glue A in the axial direction of the potting groove 1143 may also be set to 20 mm or more. The axial direction of the potting groove 1143 is coaxial with the axial direction B of the cavity 116. This arrangement allows the isolation of the main control data line 1121 to be better, thereby achieving a better explosion-proof effect. In this way, the potting glue A seal is provided at the front and rear ends of the explosion-proof cavity 115, which not only improves the isolation of the explosion-proof cavity 115 from the thermal imaging intrinsically safe component 12, but also isolates it from the external environment, thereby playing a double sealing role and achieving a better sealing effect.

[0055] exist Figures 1 to 5In the illustrated embodiment, the inner wall of the concave cavity 116 is stepped. The radial dimension of the first concave cavity 1161 in the concave cavity 116 is greater than the radial dimension of the second concave cavity 1162 in the concave cavity 116. The radial dimensions of the first concave cavity 1161 and the second concave cavity 1162 in the concave cavity 116 may be the maximum dimensions of the first concave cavity 1161 and the second concave cavity 1162 in the radial direction C of the concave cavity 116. The radial direction C of the concave cavity 116 is arranged perpendicular to the axial direction B of the concave cavity 116. This arrangement facilitates the assembly of the thermal imaging intrinsically safe component 11 in the first concave cavity 1161, and the second concave cavity 1162 is mainly sealed with the intrinsically safe data line 1222 by the potting compound A. Since the intrinsically safe data line 1222 occupies little space in the radial direction C of the concave cavity 116, setting the dimension of the second concave cavity 1161 in the radial direction C of the concave cavity 116 to be smaller can save the amount of potting compound A and save costs.

[0056] In this embodiment, the first cavity 1161 is mainly used to assemble the thermal imaging intrinsically safe component 12, and the second cavity 1162 is mainly used to fill the potting glue A. The potting glue A is used to seal the first cavity 1161 and the flameproof cavity 115 on the one hand, and to seal the intrinsically safe data line 1222 on the other hand to meet the sealing requirements. In order to improve the flameproof effect, the potting glue A filled in the second cavity 1162 must be set to at least 20 mm in the axial B dimension of the cavity 116. There are size requirements for the potting glue A in the axial B of the cavity 116. It can not only be filled in the second cavity 1162, but also partially extend into the first cavity 1161, which is not limited in this application. Whether the potting glue A contacts the thermal imaging intrinsically safe detector 122, or whether a fixing frame is set to fix the base 121, is not required in this application. In addition, the device on the surface of the thermal imaging intrinsically safe detector 122 is sealed with a thermal glue to meet the temperature requirements of T6, which is different from the potting glue here and has a different function.

[0057] exist Figures 1 to 5In the illustrated embodiment, the camera 1 is composed of a flameproof component 11 and a thermal imaging intrinsically safe component 12. During assembly, the thermal imaging intrinsically safe component 12 is initially fixed to the flameproof component 11, and then potted with potting glue A to form a sealed system that is isolated from each other. The visible light window 118 is bonded to the front shell 113 by glue to form an adhesive joint surface. The intrinsically safe data line 1222 is potted in the front shell 113 by potting glue A to form a glue-sealed joint surface. The main control board 112 is fixed to the barrel 114 by screws, and the main control data line 1121 is potted in the barrel 114 by potting glue A to form a glue-sealed joint surface. The front shell 113 and the barrel 114 cooperate to form a joint surface through the front shell joint surface 1132 and the barrel joint surface 1141. In this way, the front shell 113, the visible light window 118, the potting glue A provided at the front end, the intrinsically safe data line 1222, the barrel 114, the main control data line 1121 and the potting glue A provided at the rear end are enclosed together to form a flameproof cavity 115. The main control board 112 is provided in the flameproof cavity 115 to seal the main control board 112 and isolate the main control board 112 from the external environment. By integrating the thermal imaging lens 123 and the thermal imaging intrinsically safe detector 122 with the thermal imaging intrinsically safe component 12, on the basis of meeting the requirements of the IIC ib T6 and IIIC ib T6 explosion-proof standards, the flameproof component 11 can abandon the expensive thermal imaging window and flameproof thermal imaging lens, thereby reducing costs.

[0058] In some other embodiments, the camera 1 further includes a visible light intrinsically safe component (not shown), which is assembled side by side with the thermal imaging intrinsically safe component 12 outside the flameproof enclosure 111. The visible light intrinsically safe component includes a base, a visible light intrinsically safe detector and a visible light module. The visible light lens and the visible light intrinsically safe detector are respectively assembled on opposite sides of the base. The visible light lens is located on the side of the base away from the flameproof enclosure relative to the visible light intrinsically safe detector. The visible light intrinsically safe detector is electrically connected to the main control board. Figures 1 to 5 The embodiment shown is similar, the main difference is that the visible light module in this solution is arranged outside the flameproof housing 111, and the visible light window can be omitted. The design concept of the visible light module is similar to the design concept of the thermal imaging intrinsically safe component 12, and will not be repeated here. With such a configuration, the camera 1 of the present application can not only improve the thermal imaging part, but also improve the visible light part, so as to realize the development of low-cost dual-light (for example, visible light and thermal imaging) explosion-proof cameras.

[0059] Figure 6 FIG. 2 is a schematic diagram of the structure of an embodiment of the pan / tilt device 2 of the present application. Figure 6 As shown, the pan-tilt device 2 includes a mobile device 21 and Figures 1 to 5The camera 1 shown in the embodiment. The camera 1 is assembled on the mobile device 21. The pan-tilt device 2 can be equipped with the camera 1 of the mobile device 21, and the mobile device 21 can drive the camera 1 to rotate left and right and / or up and down, so that the intrinsically safe and flameproof camera 1 can move freely in the horizontal and / or vertical directions, thus realizing a movable explosion-proof pan-tilt device. In some embodiments, the pan-tilt device 2 includes a monocular camera 1 or a multi-camera 1. Figure 6 In the embodiment shown, the pan / tilt device 2 includes a binocular camera 1. The explosion-proof camera 1 is used in the binocular explosion-proof pan / tilt device to realize a low-cost, intrinsically safe and flameproof explosion-proof pan / tilt.

[0060] It should be understood that the present application is not limited to the contents described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A camera, characterized in that: include: A flameproof assembly, comprising a flameproof housing and a main control panel arranged in the flameproof housing; and A thermal imaging intrinsically safe component is sealed and assembled with the flameproof enclosure and is located outside the flameproof enclosure; the thermal imaging intrinsically safe component includes a base, a thermal imaging intrinsically safe detector and a thermal imaging lens, the thermal imaging lens and the thermal imaging intrinsically safe detector are respectively assembled on opposite sides of the base, the thermal imaging lens is located on a side of the base away from the flameproof enclosure relative to the thermal imaging intrinsically safe detector, and the thermal imaging intrinsically safe detector is electrically connected to the main control board.

2. The camera according to claim 1, characterized in that A plurality of components are arranged on a side of the thermal imaging intrinsically safe detector facing away from the base, and surfaces of the plurality of components are wrapped by glue sealing.

3. The camera according to claim 1, characterized in that The inductance value in the thermal imaging intrinsically safe detector is set to be at most 40uj; and / or The capacitance value in the thermal imaging intrinsically safe detector is set to be 50uj at most.

4. The camera according to claim 1, characterized in that There is an electrical gap of a preset distance between the thermal imaging intrinsically safe detector and the thermal imaging lens, so that the thermal imaging intrinsically safe detector and the thermal imaging lens are insulated from each other; and / or The thermal imaging lens is wrapped by an insulating material so that the thermal imaging lens and the base are insulated from each other.

5. The camera according to claim 1, characterized in that The flameproof enclosure comprises a front shell and a barrel, wherein the front shell is located at the front end face of the barrel; the front shell is sealed and connected to the barrel to form a flameproof cavity, wherein the main control board is assembled in the flameproof cavity; and a concave cavity and a notch connected to the concave cavity are provided on the front end face of the front shell, wherein the thermal imaging intrinsically safe detector and the thermal imaging lens are both assembled in the concave cavity through the base, and the thermal imaging lens is arranged close to the notch relative to the thermal imaging intrinsically safe detector, and is aligned with the notch and sealed and assembled.

6. The camera according to claim 5, characterized in that The front shell is recessed on one side of the barrel to form the concave cavity, the concave cavity is isolated from the flameproof cavity by a portion of the front shell, and the flameproof cavity is surrounded by the periphery of the concave cavity.

7. The camera according to claim 5, characterized in that The concave cavity includes a first concave cavity and a second concave cavity connected to the notch, and the first concave cavity and the second concave cavity are arranged in the axial direction of the concave cavity; the thermal imaging intrinsically safe detector, the thermal imaging lens and the base are all assembled in the first concave cavity, and the second concave cavity is filled with potting glue, and the potting glue seals the first concave cavity and the explosion-proof cavity.

8. The camera according to claim 7, characterized in that The thermal imaging intrinsically safe detector comprises an intrinsically safe data line, the intrinsically safe data line passes through the potting glue and is electrically connected to the main control board, and the potting glue seals the intrinsically safe data line; and / or The inner wall of the concave cavity is stepped, and the radial dimension of the first concave cavity is larger than the radial dimension of the second concave cavity; and / or The dimension of the potting glue in the axial direction of the cavity is at least 20 mm.

9. The camera according to claim 5, characterized in that: The front shell includes a front shell front end face, a front shell joint surface connected to the front shell front end face, and a concave cavity forming surface; the barrel includes a barrel joint surface and a barrel rear wall connected to the barrel joint surface; the front shell joint surface is embedded in the barrel joint surface; wherein the front shell front end face, the front shell joint surface, the concave cavity forming surface, the barrel joint surface and the barrel rear wall together form the explosion-proof cavity, and the concave cavity is formed in the area of ​​the concave cavity forming surface facing away from the explosion-proof cavity.

10. The camera according to claim 9, characterized in that A potting groove is provided on the rear wall of the cylinder; the potting groove is filled with potting glue, and the potting glue seals the flameproof cavity; the main control board includes a main control data line, and the main control data line passes through the potting glue in the potting groove and is connected to an external circuit; and / or The front end surface of the front shell, the front shell joint surface and the concave cavity forming surface are integrally arranged; and / or The barrel joint surface is integrally arranged with the barrel rear wall.

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