A construction engineering safety monitoring and supervision device
By designing a construction engineering safety monitoring and supervision device including a mounting base, multiple sets of filters and a hydraulic system, the problem of poor image clarity caused by the spot effect of construction site surveillance cameras has been solved, and high-quality monitoring effects have been achieved. in a variety of environments.
Patent Information
- Application Number
- CN202411620237.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2044-11-14
AI Technical Summary
At the construction site, the surveillance camera has a spot effect after light passes through the safety protection net, resulting in poor image clarity and details, and low monitoring quality, especially in strong wind environments.
A construction engineering safety monitoring and supervision device is designed, including a mounting base, multiple sets of filters, a lens motor, a swing motor and a micro-hydraulic system. By controlling the rotation of the camera and the adjustment of the filter combination, the impact of light spots on the image is eliminated, and the automatic adjustment and stable installation of the filter are achieved through the hydraulic system and magnetic outer ring.
It effectively eliminates the impact of light spots on camera images, improves the clarity and quality of monitoring, and is suitable for different light spot environments, especially in strong wind conditions.
Smart Images

Figure CN119155536B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of monitoring cameras, and in particular to a construction engineering safety monitoring and supervision device. Background Art
[0002] With the rapid development of science and technology Internet of Things, the management requirements of smart construction sites are becoming higher and higher. If construction site managers want to manage the construction site in all aspects, they need to customize reasonable smart site solutions.
[0003] During the construction process, it is necessary to use safety nets to fully enclose buildings, especially high-rise buildings, to effectively prevent personal injury and falling objects, prevent fires caused by welding sparks, reduce noise and dust pollution, and achieve civilized construction, environmental protection, and beautification of the city. In addition, safety nets are installed on scaffolding, and construction personnel are on the scaffolding, located inside the safety nets. This requires that surveillance cameras be installed inside the safety nets. Light passing through the safety nets is prone to produce a spot effect, which interferes with the clarity and details of the camera image, resulting in poor monitoring quality. In the document (application number: CN201720321488.7), a A camera device for improving shooting clarity, by placing a polarizing plate and a lens in front of a main camera, when the light is too strong, the polarizing plate can filter out the light that interferes with the main camera; when the light is too weak, since the light emitted by the fill light mechanism is mainly white light, the main camera can use infrared light with an wavelength of 850nm, and only a small part of the white light can be effectively used. The lens can gather the light with a wavelength of 850nm in the white light and inject it into the main camera to provide the main camera with shooting, thereby effectively improving the shooting clarity. However, the device simply installs a polarizing plate filter in front of the camera, and the light adjustment is limited. In particular, in a windy environment, the light spot shakes, and the filter types are single, and the anti-light spot effect is poor. Summary of the invention
[0004] The purpose of the present invention is to solve the above problems and provide a construction engineering safety monitoring and supervision device.
[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:
[0006] A construction engineering safety monitoring and supervision device comprises a mounting seat and a plurality of filter groups, wherein a camera is rotatably mounted on the bottom of the mounting seat, a lens motor is fixedly mounted on the outer side of the mounting seat, and a delivery end of the lens motor is connected to the camera;
[0007] A swing motor is fixedly installed inside the mounting seat, a swing rod is fixedly installed at the output end of the swing motor, a replacement fork rod is hinged on the outer side of the swing rod, the replacement fork rod can always remain horizontal, side clamp rods are arranged on both sides of the inner wall of the replacement fork rod, the side clamp rods can automatically extend and retract, a positive clamp rod is arranged on the inner wall of the replacement fork rod close to the swing rod, the positive clamp rod can automatically extend and retract, the width of the side clamp rod and the length of the positive clamp rod are both greater than the length of the swing rod, and the ends of the side clamp rod and the positive clamp rod close to the inside of the replacement fork rod are both triangular in design;
[0008] A retractable filter slip ring is arranged on the outside of the camera lens, and a magnetic outer ring is arranged on the outside of the filter. The magnetic outer rings can adsorb to each other and to the filter slip ring, and the outer side of the magnetic outer ring is designed to be conical.
[0009] Furthermore, a first gear is fixedly installed inside the mounting seat, a second gear is rotatably installed outside the rocker arm, a third gear is fixedly installed outside the replacement fork rod, and a rotation center of the third gear coincides with a hinge center of the replacement fork rod.
[0010] Furthermore, a micro hydraulic system is fixedly installed inside the mounting seat, side hydraulic grooves are provided on both sides of the inner wall of the replacement fork rod, side clamp rods are sealingly and slidably connected in the side hydraulic grooves, and spring 1 is arranged between the side clamp rod and the inner wall of the side hydraulic groove, and a positive hydraulic groove is provided on the inner wall of the replacement fork rod close to the rocker arm, the positive clamp rod is sealingly and slidably connected in the positive hydraulic groove, and spring 2 is also arranged between the positive clamp rod and the inner wall of the positive hydraulic groove, the elastic force of spring 2 is greater than the elastic force of spring 1, the side hydraulic groove and the positive hydraulic groove are both connected to the micro hydraulic system, and the side clamp rod is designed to be inclined away from the rocker arm.
[0011] Furthermore, a mounting groove is provided on the outer side of the camera lens, the filter slip ring is slidably connected in the mounting groove, a tension spring is provided between the filter slip ring and the inner wall of the mounting groove, a plurality of groups of annular grooves are provided on the outer side of the filter slip ring, the annular grooves correspond to the number of filters, a clamping rod is slidably connected to the inside of the mounting groove, the clamping rod can be clamped in the annular groove, an electromagnet is fixedly installed inside the mounting groove, and a clamping spring is provided between the electromagnet and the clamping rod.
[0012] Furthermore, the internal thread of the mounting groove is connected with a ring, a sliding cavity is provided on the inner side of the ring, the filter slip ring is slidably connected in the sliding cavity, the interior of the ring is hollow, the electromagnet is installed in the ring, and the clamping rod is slidably connected in the ring.
[0013] Furthermore, a replacement opening is formed through the bottom of the mounting seat, and soft bristles are arranged inside the replacement opening.
[0014] Furthermore, the plurality of groups of filters are polarizing filters.
[0015] Furthermore, the filter is a combined filter.
[0016] Furthermore, a cover plate is provided on the top of the mounting seat, and the cover plate is fixed on the mounting seat by screws.
[0017] The beneficial effects of the present invention are as follows:
[0018] The present invention controls the camera to rotate upward, and then adjusts the number of filters through the coordinated use of a swing rod and a replacement fork rod, thereby changing the combination of filters, eliminating the influence of light spots of different intensities on the camera image, and achieving high monitoring quality.
[0019] The present invention controls the camera to rotate downward and utilizes the gravity of the filter to automatically adjust the distance between the filter and the lens, thereby eliminating the influence of the filter thickness on the lens focal length, and has a good adjustment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;
[0021] Figure 2 It is a schematic diagram of the internal structure of the mounting base of the present invention;
[0022] Figure 3 is a filter switching schematic diagram of the present invention;
[0023] Figure 4 It is a schematic diagram of the structure of the swing rod and the replacement fork rod of the present invention;
[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of replacing the fork rod of the present invention;
[0025] Figure 6 It is a schematic structural diagram of the side clamping rod of the present invention;
[0026] Figure 7 It is an exploded diagram of the camera of the present invention;
[0027] Figure 8 It is a schematic diagram of the filter structure of the present invention;
[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the sleeve ring of the present invention;
[0029] Fig.10 It is a schematic diagram of the filter slip ring structure of the present invention.
[0030] Figure numerals: 1. mounting base; 2. lens motor; 3. camera; 31. mounting slot; 4. swing motor; 5. swing arm; 51. first gear; 52. second gear; 6. replacement fork rod; 61. third gear; 62. side clamping rod; 63. front clamping rod; 7. micro hydraulic system; 8. filter; 81. magnetic outer ring; 9. sleeve ring; 91. electromagnet; 92. clamping rod; 93. retaining spring; 10. filter slip ring; 101. annular slot; 11. tension spring; 12. soft bristles. DETAILED DESCRIPTION
[0031] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0032] Embodiment 1, as Figure 1-Figure 10 As shown, a construction engineering safety monitoring and supervision device includes a mounting base 1 and a plurality of filter groups 8, a camera 3 is rotatably mounted on the bottom of the mounting base 1, a lens motor 2 is fixedly mounted on the outer side of the mounting base 1, and a delivery end of the lens motor 2 is connected to the camera 3;
[0033] A swing motor 4 is fixedly installed inside the mounting seat 1, and a swing rod 5 is fixedly installed at the output end of the swing motor 4. A replacement fork rod 6 is hinged on the outer side of the swing rod 5, and the replacement fork rod 6 can always remain horizontal. Side clamping rods 62 are arranged on both sides of the inner wall of the replacement fork rod 6, and the side clamping rod 62 can automatically extend and retract. A positive clamping rod 63 is arranged on the inner wall of the replacement fork rod 6 close to the swing rod 5, and the positive clamping rod 63 can automatically extend and retract. The width of the side clamping rod 62 and the length of the positive clamping rod 63 are both greater than the length of the swing rod 5, and the ends of the side clamping rod 62 and the positive clamping rod 63 close to the inside of the replacement fork rod 6 are both triangular in design;
[0034] A retractable filter slip ring 10 is arranged on the outside of the camera 3 lens, and a magnetic outer ring 81 is arranged on the outside of the filter 8. The magnetic outer rings 81 can be adsorbed on each other and on the filter slip ring 10, and the outer side of the magnetic outer ring 81 is designed to be conical.
[0035] By setting multiple groups of filters 8, when the spot contrast is large, the lens motor 2 drives the camera 3 to rotate upward, toward the inside of the mounting seat 1, and at this time, the control swing rod 5 swings downward, and the swing rod 5 drives the replacement fork rod 6 to swing downward, and the replacement fork rod 6 always remains horizontal, and the replacement fork rod 6 drives the filter 8 to descend, and the filter 8 is adsorbed on the filter slip ring 10, and then the side clamp rod 62 and the positive clamp rod 63 are controlled to retract, and the control swing rod 5 swings upward, and the swing rod 5 drives the replacement fork rod 6 to rise. When the replacement fork rod 6 rises to above the required number of filters 8, the side clamp rod 62 and the positive clamp rod 63 are controlled to extend. Since the ends of the side clamp rod 62 and the positive clamp rod 63 close to the inside of the replacement fork rod 6 are both triangular in design, and the outer side of the magnetic outer ring 81 is conical in design, the side clamp rod 62 and the positive clamp rod 6 3 can be easily inserted between adjacent magnetic outer rings 81, and then the two sets of side clamping rods 62 continue to be inserted, and the positive clamping rod 63 does not continue to be inserted, but only plays a supporting role. The two sets of side clamping rods 62 separate the magnetic outer ring 81, and the two ends are evenly stressed, and the magnetic outer ring 81 will not deviate. At the same time, since the upper magnetic outer ring 81 is located on the upper surface of the two sets of side clamping rods 62, but only on the inclined surface of the positive clamping rod 63, the magnetic outer ring 81 is slightly inclined toward the positive clamping rod 63 and obliquely pressed on the positive clamping rod 63. The storage of the magnetic outer ring 81 is more stable, and the number of filters 8 used can be controlled, which is suitable for different light spot environments. The specific replacement logic is to first stack all the filters 8 together, and then remove a certain number of them according to needs, so that the center position of the filter 8 stacking can be guaranteed to remain unchanged;
[0036] When the filter 8 is thin, it needs to be close to the lens to obtain the best optical effect. When the filter 8 is stacked, its thickness is large, which easily affects the focal length of the camera 3. It is necessary to have a certain distance between the filter 8 and the lens. Therefore, the present invention can not only provide an adsorption platform for the filter 8 through the setting of the filter slip ring 10, but also control the distance between the filter 8 and the lens, so that the filter 8 can achieve the best optical effect.
[0037] The present invention controls the lifting and lowering of the replacement fork rod 6 by the swing of the rocker arm 5. Compared with the straight up and down lifting structure, the driving source can be arranged horizontally, which can greatly save the occupied space and has a compact structure. At the same time, the replacement fork rod 6 can not only stably drive the filter 8 to rise and fall, but also drive the filter 8 to move horizontally, and move relative to the camera 3. It only needs to rise a short distance, which will not interfere with the rotation of the camera 3, and further improve the space utilization.
[0038] Furthermore, a cover plate is provided on the top of the mounting base 1, and the cover plate is fixedly mounted on the mounting base 1 by screws, so as to facilitate the installation and maintenance of the internal micro hydraulic system 7 and other components.
[0039] Embodiment 2, based on the above embodiment, provides a method for replacing the horizontal structure of the fork rod 6;
[0040] like Figure 2-Figure 4 As shown, a first gear 51 is fixedly installed inside the mounting seat 1, a second gear 52 is rotatably installed on the outer side of the rocker arm 5, a third gear 61 is fixedly installed on the outer side of the replacement fork rod 6, and the rotation center of the third gear 61 coincides with the hinge center of the replacement fork rod 6.
[0041] The swing motor 4 drives the swing rod 5 to swing, and the swing rod 5 drives the replacement fork rod 6 to swing. At the same time, the swing rod 5 drives the second gear 52 to rotate around the first gear 51, and the second gear 52 rotates. The second gear 52 drives the third gear 61 to rotate, and the third gear 61 drives the replacement fork rod 6 to swing relative to the swing rod 5, and in the opposite direction to the swing direction of the swing rod 5, so that the replacement fork rod 6 can always remain horizontal, the filter 8 is stably lifted, and the structure is compact.
[0042] Embodiment 3, based on the above embodiment, provides a telescopic structure in which a side clamping rod 62 has a front clamping rod 63;
[0043] like Figure 2-Figure 6 As shown, a micro hydraulic system 7 is fixedly installed inside the mounting seat 1, side hydraulic grooves are provided on both sides of the inner wall of the replacement fork rod 6, and the side clamp rod 62 is sealingly and slidably connected in the side hydraulic grooves, and a spring 1 is arranged between the side clamp rod 62 and the inner wall of the side hydraulic groove, and a positive hydraulic groove is provided on the inner wall of the replacement fork rod 6 close to the rocker arm 5, and the positive clamp rod 63 is sealingly and slidably connected in the positive hydraulic groove, and a spring 2 is also arranged between the positive clamp rod 63 and the inner wall of the positive hydraulic groove, and the elastic force of the spring 2 is greater than the elastic force of the spring 1, and the side hydraulic groove and the positive hydraulic groove are both connected to the micro hydraulic system 7, and the side clamp rod 62 is designed to be inclined away from the rocker arm 5.
[0044] Liquid is injected into the side hydraulic groove and the positive hydraulic groove through the micro hydraulic system 7. At this time, the hydraulic pressure is greater than the pulling force of spring 2 and spring 1. Under the action of hydraulic pressure, the side clamp rod 62 and the replacement fork rod 6 are extended at the same time, and the side clamp rod 62 and the positive clamp rod 63 can be easily inserted between adjacent magnetic outer rings 81. At this time, spring 2 is stretched to the same limit force as the hydraulic pressure, the positive clamp rod 63 does not extend, and the side clamp rod 62 continues to extend, so as to separate the magnetic outer ring 81. It should be noted that when the swing rod 5 swings to the horizontal, the replacement fork rod 6 is located above all filters 8. As the swing rod 5 swings downward, the positive clamp rod 63 is initially The initial position is far away from the filter 8, so the pressure of the micro-hydraulic system 7 needs to increase so that the positive clamping rod 63 can be stably inserted between the adjacent magnetic outer rings 81. The control logic is that the greater the downward swing angle of the swing arm 5, the greater the pressure of the micro-hydraulic system 7. At the same time, when the swing arm 5 swings downward, the narrow end of the side clamping rod 62 gradually approaches the center of the camera 3, and the distance between the side clamping rod 62 and the filter 8 also increases. Therefore, after the pressure is high, the side clamping rod 62 and the positive clamping rod 63 increase the extension distance at the same time to be inserted between the filters 8, ensuring that the side clamping rod 62 and the positive clamping rod 63 can be inserted between the filters 8 and the clamping support is stable.
[0045] Embodiment 4, on the basis of the above embodiment, further includes: a mounting groove 31 is provided on the outer side of the lens of the camera 3, the filter slip ring 10 is slidably connected in the mounting groove 31, a tension spring 11 is provided between the filter slip ring 10 and the inner wall of the mounting groove 31, a plurality of groups of annular grooves 101 are provided on the outer side of the filter slip ring 10, the number of the annular grooves 101 corresponds to the number of filters 8, a clamping rod 92 is slidably connected inside the mounting groove 31, the clamping rod 92 can be clamped in the annular groove 101, an electromagnet 91 is fixedly installed inside the mounting groove 31, and a clamping spring 93 is provided between the electromagnet 91 and the clamping rod 92.
[0046] When the filter 8 is thin, it needs to be close to the lens to obtain the best optical effect. When the filter 8 is stacked and used, its thickness is large, which is easy to affect the focal length of the camera 3. It is necessary to have a certain distance between the filter 8 and the lens. Therefore, the present invention can not only provide an adsorption platform for the filter 8 through the setting of the filter slip ring 10, but also control the lens motor 2 to drive the camera 3 to rotate downward when the number of filters 8 is changed. The electromagnet 91 is energized, and the electromagnet 91 generates a magnetic force to drive the clamping rod 92 away from the annular groove 101. The filter slip ring 10 descends under the gravity of the filter 8, and the annular groove 101 corresponding to the number of filters 8 descends to the position of the clamping rod 92. Then the electromagnet 91 is de-energized, and the retaining spring 93 pushes the clamping rod 92 to be inserted into the annular groove 101, thereby automatically completing the adjustment of the distance between the filter 8 and the lens. The structure is simple and the adjustment is convenient.
[0047] Embodiment 5, based on the above embodiment, further includes: the internal thread of the mounting groove 31 is connected with a ring 9, the inner side of the ring 9 is provided with a sliding cavity, the filter slip ring 10 is slidably connected in the sliding cavity, the interior of the ring 9 is hollow designed, the electromagnet 91 is installed in the ring 9, and the clamping rod 92 is slidably connected in the ring 9.
[0048] Through the arrangement of this embodiment, the clamping rod 92 and the electromagnet 91 are pre-installed in the collar 9, and then the collar 9 is screwed into the mounting groove 31. At the same time, the filter slip ring 10 is first installed in the mounting groove 31, and then the collar 9 is installed, which is convenient for installation.
[0049] Embodiment 6, on the basis of the above embodiment, further includes: a replacement port is opened through the bottom of the mounting base 1, and soft bristles 12 are arranged inside the replacement port. Through this design, when the camera 3 is flipped upward, the soft bristles 12 can clean the surface of the filter 8 without scraping the filter 8. The surface of the filter 8 is cleaned before adjusting the filter 8, thereby further improving the light processing effect of the filter 8.
[0050] Embodiment 7, based on the above embodiment, further includes that the plurality of groups of filters 8 are all polarization filters. Through the configuration of this embodiment, four groups of filters 8 can be provided, and the quantity can be adjusted in a wide range.
[0051] Embodiment 8, on the basis of the above embodiment, further includes that the filter 8 is a combination filter. Through the setting of this embodiment, two groups of filters 8 can be set, and the two groups of filters 8 can be ND and polarization composite filters, or UV and polarization composite filters. Therefore, the polarization composite filter or the combination filter can be used alone. ND and polarization composite filter: combining the functions of neutral density (ND) filter and polarization filter, it can not only reduce the amount of light entering the lens, but also eliminate reflection and enhance color contrast. It is suitable for situations where there is wind outside and the light spot is shaking. UV and polarization composite filter: combining the functions of UV filter and polarization filter, it can be used to protect the lens, but also reduce reflection and enhance image clarity. It is suitable for complex environments where the lens is easily damaged.
[0052] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A construction engineering safety monitoring and supervision device, comprising a mounting base (1) and a plurality of filter groups (8), characterized in that: A camera (3) is rotatably mounted on the bottom of the mounting seat (1), a lens motor (2) is fixedly mounted on the outer side of the mounting seat (1), and a delivery end of the lens motor (2) is connected to the camera (3); A swing motor (4) is fixedly mounted inside the mounting seat (1), a swing rod (5) is fixedly mounted on the output end of the swing motor (4), a replacement fork rod (6) is hingedly connected to the outer side of the swing rod (5), the replacement fork rod (6) can always remain horizontal, side clamp rods (62) are arranged on both sides of the inner wall of the replacement fork rod (6), the side clamp rods (62) can automatically extend and retract, and a positive clamp rod (63) is arranged on the inner wall of the replacement fork rod (6) close to the swing rod (5), the positive clamp rod (63) can automatically extend and retract. The width of the side clamping rod (62) and the length of the front clamping rod (63) are both greater than the length of the swing rod (5); the ends of the side clamping rod (62) and the front clamping rod (63) close to the inside of the replacement fork rod (6) are both triangular in design; a retractable filter slip ring (10) is provided on the outside of the camera (3) lens; a magnetic outer ring (81) is provided on the outside of the filter (8); the magnetic outer rings (81) can be adsorbed to each other and to the filter slip ring (10); and the outer side of the magnetic outer ring (81) is conical in design; A first gear (51) is fixedly installed inside the mounting seat (1), a second gear (52) is rotatably installed on the outer side of the swing rod (5), a third gear (61) is fixedly installed on the outer side of the replacement fork rod (6), the rotation center of the third gear (61) coincides with the hinge center of the replacement fork rod (6), a micro hydraulic system (7) is fixedly installed inside the mounting seat (1), side hydraulic grooves are provided on both sides of the inner wall of the replacement fork rod (6), a side clamping rod (62) is sealingly slidably connected in the side hydraulic grooves, and a spring 1 is provided between the side clamping rod (62) and the inner wall of the side hydraulic groove, a positive hydraulic groove is provided on the inner wall of the replacement fork rod (6) close to the swing rod (5), a positive clamping rod (63) is sealingly slidably connected in the positive hydraulic groove, and a spring 2 is also provided between the positive clamping rod (63) and the inner wall of the positive hydraulic groove, the elastic force of the spring 2 is greater than the elastic force of the spring 1, the side hydraulic groove and the positive hydraulic groove are both connected to the micro hydraulic system (7), the side The clamping rod (62) is designed to be inclined in a direction away from the swing rod (5); a mounting groove (31) is provided on the outer side of the lens of the camera (3); the filter slip ring (10) is slidably connected in the mounting groove (31); a tension spring (11) is provided between the filter slip ring (10) and the inner wall of the mounting groove (31); a plurality of groups of annular grooves (101) are provided on the outer side of the filter slip ring (10); the number of the annular grooves (101) corresponds to the number of filters (8); and the mounting grooves ( The mounting groove (31) is internally slidably connected to a clamping rod (92), the clamping rod (92) being capable of being clamped in an annular clamping groove (101), the internal threaded connection of the mounting groove (31) being a sleeve ring (9), the inner side of the sleeve ring (9) being provided with a sliding cavity, the filter slip ring (10) being slidably connected in the sliding cavity, the interior of the sleeve ring (9) being of hollow design, an electromagnet (91) being installed in the sleeve ring (9), and a retaining spring (93) being provided between the electromagnet (91) and the clamping rod (92).
2. A construction engineering safety monitoring and supervision device according to claim 1, characterized in that: A replacement opening is provided through the bottom of the mounting seat (1), and soft bristles (12) are arranged inside the replacement opening.
3. A construction engineering safety monitoring and supervision device according to claim 1, characterized in that: The multiple groups of filters (8) are all polarizing filters.
4. A construction engineering safety monitoring and supervision device according to claim 1, characterized in that: The filter (8) is a combined filter.
5. A construction engineering safety monitoring and supervision device according to claim 1, characterized in that: A cover plate is provided on the top of the mounting seat (1), and the cover plate is fixedly mounted on the mounting seat (1) by means of screws.
Citation Information
Patent Citations
Monitoring lens capable of eliminating influence of light reflection
CN114815448A
Improve shooting definition's camera device
CN206559493U