CN114745480B - High-definition live broadcast and recording equipment for video course learning - Google Patents

High-definition live broadcast and recording equipment for video course learning Download PDF

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Publication number
CN114745480B
CN114745480B CN202210292864.XA CN202210292864A CN114745480B CN 114745480 B CN114745480 B CN 114745480B CN 202210292864 A CN202210292864 A CN 202210292864A CN 114745480 B CN114745480 B CN 114745480B
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CN
China
Prior art keywords
bottom plate
mounting bottom
plate
video
cover
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Active
Application number
CN202210292864.XA
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Chinese (zh)
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CN114745480A (en
Inventor
曾昆
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Shenzhen Fangyuanbao Information Technology Service Co ltd
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Shenzhen Fangyuanbao Information Technology Service Co ltd
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Priority to CN202210292864.XA priority Critical patent/CN114745480B/en
Publication of CN114745480A publication Critical patent/CN114745480A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B11/00Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
    • B08B11/04Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto specially adapted for plate glass, e.g. prior to manufacture of windshields
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/51Housings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/52Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108Rainwater harvesting

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Studio Devices (AREA)

Abstract

The application belongs to the technical field of multimedia recording, and particularly relates to high-definition live broadcasting and recording equipment for video course learning, which comprises a mounting bottom plate, a cover body hinged with the mounting bottom plate, and a camera shooting body connected with the upper end of the mounting bottom plate, wherein a glass cover body is arranged at the head of the camera shooting body, a water spraying part connected with the mounting bottom plate is arranged at the lower part of the front end of the camera shooting body, water is sprayed on the glass cover body by the water spraying part, a guide plate, a filter plate and a liquid collecting part are sequentially arranged at the lower end of the mounting bottom plate, the guide plate is connected with the mounting bottom and is used for changing the flow direction of sewage towards the filter plate, and a plurality of sucking parts for collecting dirt are arranged on the filter plate.

Description

High-definition live broadcast and recording equipment for video course learning
Technical Field
The application belongs to the technical field of multimedia recording, and particularly relates to high-definition live broadcast and recording equipment for video course learning.
Background
With the development of the mobile internet, educational video courses are more and more popular with students, and especially synchronous educational video courses. The whole recording flow of the large educational video course comprises material arrangement, courseware making, courseware auditing, courseware beautifying auditing, video recording, video editing and the like. The whole recording process is to dock with each teacher under the line of the docking person, then transmit data, and then upload the final education video course to the system by the docking person.
However, the live video and recording device in the prior art is not convenient to carry, especially in outdoor use, the surface of the lens is polluted by external foreign matters, so that the live video and recording quality is low.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides high-definition live broadcast and recording equipment for video course learning, which is used for solving the problems that the existing video live broadcast and recording equipment is not convenient to carry, and particularly in outdoor use, the surface of a lens is polluted by external foreign matters, so that the live broadcast recording quality is low.
In order to solve the technical problems, the application adopts the following technical scheme:
the utility model provides a live and record equipment of high definition for video course study, includes mounting plate, with mounting plate articulated lid, with the body of making a video recording that the mounting plate upper end is connected, the head of making a video recording the body is provided with the glass cover body, body front end lower part of making a video recording is provided with the water spray portion that is connected with mounting plate, water spray portion spouts the water liquor to the glass cover body, the mounting plate lower extreme has set gradually guide plate, filter and album liquid portion, the guide plate is connected with the mounting plate bottom and is used for changing the flow direction of sewage towards the filter, be provided with a plurality of suction portions that are used for collecting the filth on the filter.
Further, still be provided with the device that shakes that is connected with mounting plate between guide plate and the filter, be connected with the piece of scraping that overlaps in the filter upper end on the device that shakes, the device that shakes control is scraped and is moved the piece and is close to or keep away from the suction portion, adjustment filth and suction portion between the distance.
Further, the shaking device comprises a connecting push bar connected with the scraping piece, a limiting piece connected to the tail of the connecting push bar and a rocker arm mechanism, wherein the inner side of the limiting piece is in sliding connection with the mounting bottom plate, a bulge is arranged on the rocker arm mechanism, and a limiting through hole matched with the bulge is formed in the limiting piece.
Further, the rear side of the camera body is also provided with a pressing component for controlling the camera body to vertically move and a cleaning component arranged at the lower part of the glass cover body, the pressing component comprises a connecting seat connected with the upper end of the mounting base plate and an adjusting arm movably connected with the connecting seat, the other end of the adjusting arm is connected with the camera body, the cleaning component comprises a cleaning frame connected with the mounting base plate and a plurality of wheel bodies distributed on the edge of the cleaning frame, a plurality of wheel bodies form a concave cavity between every two of the wheel bodies, after the pressing component, the camera body moves in the concave cavity and contacts with the wheel bodies when descending, and foreign matters on the surface of the glass cover body are removed by the wheel bodies.
Further, the pressing assembly has therein an elastic member for restoring the regulating arm to an initial state.
Further, the camera shooting device further comprises a limiting frame which is connected to the mounting bottom plate and limits the camera shooting body to move vertically.
Further, still including rotating the cover, rotate the cover setting in the lower extreme of making a video recording the body and be connected with the clearance frame upper end, the glass cover is a plurality of, a plurality of the glass cover with rotate the edge vertical connection of cover, the outside of rotating the cover still is provided with and is used for the drive rotate the rotatory driving piece of cover, when the driving piece drove and rotate the cover body, the glass cover body is followed the front portion of making a video recording the body removes to the lateral part of making a video recording the body.
Further, the bottom of rotating the cover is provided with the bolt, clearance frame upper end central point puts and is equipped with the location passageway, rotate the cover through the cooperation of bolt, location passageway with clearance frame rotates to be connected.
Further, the guide plate is arc-shaped and is rotationally connected with the mounting bottom plate.
Compared with the prior art, the application has the following beneficial effects:
1. the camera body is arranged in the cavity formed by the surrounding of the mounting bottom plate and the cover body, so that the camera body can be prevented from being in collision contact with other equipment in an outdoor moving stage, and the components of the camera body are prevented from being damaged;
2. according to the application, the glass cover body is arranged outside the shooting body, if the surface of the shooting body needs to be cleaned, the pressing component can be pressed, so that the shooting body can keep a slow and stable up-down moving mode, the cleaning component is matched with the glass cover body, and the surface foreign matters of the shooting body are treated, thereby avoiding the possibility that the traditional lens cleaning needs to be stopped and the effects of live broadcasting and recording of video courses are influenced;
drawings
Fig. 1 is a schematic diagram of a left-view structure of an embodiment of a high-definition live broadcast and recording device for video lesson learning according to the present application;
fig. 2 is a schematic diagram of an exploded structure of a shaking device, an intermittent shaking assembly, and a cleaning assembly in an embodiment of a high-definition live broadcast and recording apparatus for video course learning according to the present application;
FIG. 3 is a schematic diagram of an explosion structure of a deflector and a swing transmission member in an embodiment of a high-definition live broadcast and recording apparatus for video course learning according to the present application;
fig. 4 is a schematic structural diagram of a cleaning assembly and a driving member in an embodiment of a high-definition live broadcast and recording device for video course learning according to the present application;
fig. 5 is a schematic structural diagram of the cooperation of the swing transmission member and the connection push bar in an embodiment of the high-definition live broadcast and recording device for video course learning according to the present application;
reference numerals in the drawings of the specification include:
the device comprises a mounting bottom plate 1, a cover body 10, a camera body 2, a glass cover body 20, a water spraying part 3, a guide plate 11, a guide rotating shaft 110, a filter plate 12, a liquid collecting part 13 and a suction part 14;
the device comprises a shaking device 4, a scraping piece 40, a connecting pushing bar 41, a tooth-shaped groove 410, a limiting piece 42, a rocker arm mechanism 43, a bulge 44 and a limiting through hole 45;
the pressing assembly 5, the connecting seat 50, the adjusting arm 51, the elastic piece 52, the limiting frame 53, the cleaning assembly 6, the cleaning frame 60, the positioning channel 61, the wheel body 62, the concave cavity 63, the rotating cover 64, the first notch 641, the second notch 642, the bolt 65, the driving piece 66, the driving head 661, the driving arm 662 and the poking protrusion 663;
intermittent rocker assembly 7, push-pull gear 71, intermittent reciprocating mechanism 72, swing driver 73, driving gear 74, driven gear 75, connecting toothed belt 76, and transmission shaft 77.
Detailed Description
In order that those skilled in the art will better understand the present application, the following technical scheme of the present application will be further described with reference to the accompanying drawings and examples.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the application, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Examples:
as shown in fig. 1-5, the high-definition live broadcast and recording device for video course learning of the application comprises a mounting base plate 1, a cover body 10 hinged with the mounting base plate 1, a camera shooting body 2 connected with the upper end of the mounting base plate 1, a glass cover body 20 arranged on the head of the camera shooting body 2, a water spraying part 3 connected with the mounting base plate 1 arranged at the lower part of the front end of the camera shooting body 2, a water spraying part 3 spraying water liquid to the glass cover body 20, a guide plate 11, a filter plate 12 and a liquid collecting part 13 arranged at the lower end of the mounting base plate 1 in sequence, wherein the guide plate 11 is connected with the mounting base and used for changing the flow direction of sewage towards the filter plate 12, a plurality of suction parts 14 used for collecting sewage are arranged on the filter plate 12, a shaking device 4 connected with the mounting base plate 1 is also arranged between the guide plate 11 and the filter plate 12, a scraping piece 40 lapped on the upper end of the filter plate 12 is connected on the shaking device 4, the shaking device 4 controls the scraping piece 40 to be close to or far away from the suction parts 14, and the distance between the sewage and the suction parts 14 is adjusted.
The camera body 2 is placed in a cavity formed by surrounding the mounting bottom plate 1 and the cover body 10, so that damage to components of the camera body 2 caused by collision with other equipment in an outdoor moving stage can be avoided, in addition, the water spraying part 3 sprays water to the glass cover body 20, dirt on the glass cover body 20 is cleaned and drained into the liquid collecting part 13 at the lower part along with the guide plate 11, the waste water can be poured in a concentrated manner at a later stage, impurities which are not easy to dissolve in the waste water are filtered by the filter plate 12, soap liquid can be placed in the water spraying part 3, and the generated foam is sucked by the suction part 14.
The shaking device 4 comprises a connecting push bar 41 connected with the scraping piece 40, a limiting piece 42 connected to the tail of the connecting push bar 41 and a rocker arm mechanism 43, wherein the inner side of the limiting piece 42 is in sliding connection with the mounting base plate 1, a protrusion 44 is arranged on the rocker arm mechanism 43, a limiting through hole 45 matched with the protrusion 44 is formed in the limiting piece 42, and when the shaking device is used, the shaking device can manually rotate the rocker arm mechanism 43 and provide power.
In order to prevent the filter plate 12 from being blocked by impurities, the connecting pushing bar 41 can be moved to the vicinity of the suction part 14 by the shaking device 4 to facilitate the function of the suction part 14.
The rear side of the camera body 2 is further provided with a pressing component 5 for controlling the camera body 2 to vertically move and a cleaning component 6 arranged at the lower part of the glass cover body 20, the pressing component 5 comprises a connecting seat 50 connected with the upper end of the mounting base plate 1 and an adjusting arm 51 movably connected with the connecting seat 50, the other end of the adjusting arm 51 is connected with the camera body 2, an elastic piece 52 for restoring the adjusting arm 51 to an initial state is arranged in the pressing component 5, in addition, a limiting frame 53 is connected to the mounting base plate 1, the camera body 2 can be limited to vertically move and prevent the camera body 2 from moving, the cleaning component 6 comprises a cleaning frame 60 connected with the mounting base plate 1 and a plurality of wheel bodies 62 distributed at the edge of the cleaning frame 60, a concave cavity 63 is formed between every two of the wheel bodies 62, after the pressing component 5, the camera body 2 moves in the concave cavity 63 and contacts with the wheel bodies 62, and foreign matters on the surface of the glass cover body 20 are removed by the wheel bodies 62.
According to the application, the glass cover body 20 is arranged outside the camera body 2, if the surface of the camera body 2 needs to be cleaned, the pressing component 5 can be pressed, so that the camera body 2 can keep a slow and stable up-and-down moving mode, the cleaning component 6 is matched with the glass cover body 20, and the surface foreign matters of the camera body are treated, so that the possibility that the camera body needs to be stopped when a traditional lens is cleaned and the live broadcasting and recording effects of video courses are influenced is avoided.
The rotating cover 64 is arranged at the lower end of the camera body 2 and is connected with the upper end of the cleaning frame 60, a plurality of glass covers are vertically connected with the edges of the rotating cover 64, a driving piece 66 for driving the rotating cover 64 to rotate is further arranged on the outer side of the rotating cover 64, and when the driving piece 66 drives the rotating cover 64 to rotate, the glass cover 20 moves from the front part of the camera body 2 to the side part of the camera body 2.
The rotating cover 64 is sequentially provided with a plurality of first notches 641 and a plurality of second notches 642 which are alternately spaced apart, the driving piece 66 comprises a driving head 661 and a driving arm 662 connected with the outer side of the driving head 661, a poking protrusion 663 is arranged on the driving arm 662, the driving head 661 and the poking protrusion 663 are respectively matched with the first notches 641 and the second notches 642, and when the driving piece 66 rotates, the driving arm 662 rotates the rotating cover 64 through the poking protrusion 663.
The driving piece 66 is adopted to enable the rotating cover 64 to rotate by a certain angle, so that the glass cover moves to the side of the camera body 2, and can be independently acted by the wheel body 62 under the condition that the view of the camera body 2 is not blocked, thereby avoiding the situation that the image in the cleaning process is recorded by the camera body 2 and affecting the live video effect.
The outer side of the shaking device 4 is further provided with an intermittent shaking assembly 7, the connecting pushing bar 41 is provided with a tooth groove 410, the intermittent shaking assembly 7 comprises a push-pull gear 71 meshed with the tooth groove 410 and an intermittent reciprocating mechanism 72 connected with the side surface of the push-pull gear 71, the intermittent reciprocating mechanism 72 is connected with a swinging transmission piece 73, a flow guide rotating shaft 110 is arranged in the flow guide plate 11, the flow guide plate 11 is arc-shaped and is movably connected with the mounting baseplate 1 through the flow guide rotating shaft 110, the outer side of the swinging transmission piece 73 is provided with a driving gear 74, a driven gear 75 connected with the flow guide rotating shaft 110 and a connecting toothed belt 76, the driving gear 74 and the driven gear 75 are connected through the connecting toothed belt 76, in addition, the outer side of the swinging transmission piece 73 can be provided with a transmission shaft 77, the transmission shaft 77 can be used for mounting the driving gear 74 and can be connected with the outer side of a driving head 661, and thus, power can be provided for the cleaning assembly 6 while intermittent deflection of the flow guide plate 11 is realized, and the rotation of the glass cover 20 is realized.
When the intermittent reciprocating mechanism 72 operates, the guide plate 11 can be driven to swing, sewage flowing down from the upper surface can be guided to the lower end filter plate 12, the sewage is prevented from flowing towards one direction, the integral filtering effect of the filter plate 12 is prevented from being influenced, and a plurality of suction parts 14 are enabled to play a role.
The bottom of the rotating cover 64 is provided with a bolt 65, a locating channel 61 is arranged at the center of the upper end of the cleaning frame 60, and the rotating cover 64 is rotationally connected with the cleaning frame 60 through the cooperation of the bolt 65 and the locating channel 61.
The foregoing is merely exemplary of the present application, and specific structures and features well known in the art will not be described in detail herein, so that those skilled in the art will be aware of all the prior art to which the present application pertains, and will be able to ascertain the general knowledge of the technical field in the application or prior art, and will not be able to ascertain the general knowledge of the technical field in the prior art, without using the prior art, to practice the present application, with the aid of the present application, to ascertain the general knowledge of the same general knowledge of the technical field in general purpose. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent.

Claims (6)

1. A high definition live broadcast and record equipment for video course study, its characterized in that: the device comprises a mounting bottom plate, a cover body hinged with the mounting bottom plate, and a camera shooting body connected with the upper end of the mounting bottom plate, wherein a glass cover body is arranged at the head of the camera shooting body, a water spraying part connected with the mounting bottom plate is arranged at the lower part of the front end of the camera shooting body, water is sprayed to the glass cover body by the water spraying part, a guide plate, a filter plate and a liquid collecting part are sequentially arranged at the lower end of the mounting bottom plate, the guide plate is connected with the mounting bottom and used for changing the flow direction of sewage towards the filter plate, and a plurality of suction parts for collecting sewage are arranged on the filter plate;
a shaking device connected with the installation bottom plate is further arranged between the guide plate and the filter plate, a scraping piece which is lapped at the upper end of the filter plate is connected to the shaking device, the shaking device controls the scraping piece to be close to or far away from the suction part, and the distance between dirt and the suction part is adjusted;
the shaking device comprises a connecting push bar connected with the scraping piece, a limiting piece connected to the tail part of the connecting push bar and a rocker arm mechanism, wherein the inner side of the limiting piece is in sliding connection with the mounting bottom plate, a bulge is arranged on the rocker arm mechanism, and a limiting through hole matched with the bulge is formed in the limiting piece;
the outer side of the shaking device is also provided with an intermittent shaking assembly, the connecting pushing bar is provided with a tooth-shaped groove, and the intermittent shaking assembly comprises a push-pull gear meshed with the tooth-shaped groove and an intermittent reciprocating mechanism connected with the side surface of the push-pull gear;
the intermittent reciprocating mechanism is connected with a swing transmission part, a flow guide rotating shaft is arranged in the flow guide plate, a driving gear, a driven gear connected with the flow guide rotating shaft and a connecting toothed belt are arranged on the outer side of the swing transmission part, and the driving gear and the driven gear are connected through the connecting toothed belt;
the guide plate is arc-shaped and is movably connected with the mounting bottom plate through the guide rotating shaft.
2. The high definition live and recording device for video lesson study of claim 1, wherein: the rear side of the camera body is also provided with a pressing component for controlling the camera body to vertically move and a cleaning component arranged at the lower part of the glass cover body, the pressing component comprises a connecting seat connected with the upper end of the mounting base plate and an adjusting arm movably connected with the connecting seat, the other end of the adjusting arm is connected with the camera body, the cleaning component comprises a cleaning frame connected with the mounting base plate and a plurality of wheel bodies distributed on the edge of the cleaning frame, a plurality of wheel bodies form a concave cavity between every two of the wheel bodies, after the pressing component, the camera body moves in the concave cavity and contacts with the wheel bodies when descending, and foreign matters on the surface of the glass cover body are removed by the wheel bodies.
3. The high definition live and recording device for video lesson study of claim 2, wherein: the pressing assembly is provided with an elastic piece which returns the adjusting arm to an initial state.
4. The high definition live and recording device for video lesson study of claim 2, wherein: the camera shooting device further comprises a limiting frame which is connected to the mounting bottom plate and limits the camera shooting body to move vertically.
5. The high definition live and recording device for video lesson study of claim 2, wherein: still including rotating the cover, rotate the cover setting in the lower extreme of body of making a video recording and be connected with the clearance frame upper end, the glass cover is a plurality of, a plurality of the glass cover with rotate the edge of cover and be connected perpendicularly, it still is provided with to rotate the outside of cover and be used for the drive rotate rotatory driving piece of cover, when the driving piece drove and rotate the cover body, the glass cover body is followed the front portion of body of making a video recording removes the lateral part of body of making a video recording.
6. The high definition live and recording device for video curriculum study of claim 5, wherein: the bottom of rotating the cover is provided with the bolt, clearance frame upper end central point puts and is equipped with the location passageway, rotate the cover through the cooperation of bolt, location passageway with clearance frame rotates to be connected.
CN202210292864.XA 2022-03-23 2022-03-23 High-definition live broadcast and recording equipment for video course learning Active CN114745480B (en)

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CN114745480B true CN114745480B (en) 2023-11-21

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WO2018223530A1 (en) * 2017-06-08 2018-12-13 深圳市鹰硕技术有限公司 Method for monitoring recording and broadcasting data learning based on internet
CN209674578U (en) * 2019-01-28 2019-11-22 水滴智慧科技(深圳)有限公司 A kind of smart classroom chemical experiment demonstration system
CN210780996U (en) * 2019-11-12 2020-06-16 湖北欣华生态畜禽开发有限公司 Automatic dust collector of surveillance camera head
CN213558607U (en) * 2020-11-05 2021-06-29 韶关市运德信息科技有限公司 A wiper device for outdoor surveillance camera machine
CN213938059U (en) * 2020-10-31 2021-08-10 甘肃柏隆电子商务科技有限责任公司 Security protection camera based on big data platform
CN113568258A (en) * 2021-07-20 2021-10-29 深圳方圆宝信息科技服务有限公司 Video course live broadcast and recording combined equipment

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TWM530261U (en) * 2016-07-18 2016-10-11 Protv Dev Inc Automobile rear-view mirror having driving record function

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012039349A1 (en) * 2010-09-22 2012-03-29 富士フイルム株式会社 Image capture device
WO2018223530A1 (en) * 2017-06-08 2018-12-13 深圳市鹰硕技术有限公司 Method for monitoring recording and broadcasting data learning based on internet
CN209674578U (en) * 2019-01-28 2019-11-22 水滴智慧科技(深圳)有限公司 A kind of smart classroom chemical experiment demonstration system
CN210780996U (en) * 2019-11-12 2020-06-16 湖北欣华生态畜禽开发有限公司 Automatic dust collector of surveillance camera head
CN213938059U (en) * 2020-10-31 2021-08-10 甘肃柏隆电子商务科技有限责任公司 Security protection camera based on big data platform
CN213558607U (en) * 2020-11-05 2021-06-29 韶关市运德信息科技有限公司 A wiper device for outdoor surveillance camera machine
CN113568258A (en) * 2021-07-20 2021-10-29 深圳方圆宝信息科技服务有限公司 Video course live broadcast and recording combined equipment

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