CN206294248U - Dual camera video and audio recording arrangement - Google Patents
Dual camera video and audio recording arrangement Download PDFInfo
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- CN206294248U CN206294248U CN201621386940.XU CN201621386940U CN206294248U CN 206294248 U CN206294248 U CN 206294248U CN 201621386940 U CN201621386940 U CN 201621386940U CN 206294248 U CN206294248 U CN 206294248U
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Abstract
A kind of dual camera video and audio recording arrangement, including base, support bar, main CCD camera assembly, and secondary CCD camera assembly.The bottom connect base of the support bar, is rotatably coupled the bottom of main CCD camera assembly at the top of the support bar, the bottom of the secondary CCD camera assembly is rotatably coupled the top of main CCD camera assembly.At least sound pick-up for gathering audio signal for audio is included is provided with the base.The utility model has Voice ＆ Video recording function concurrently simultaneously.The utility model is set by dual camera to be realized simultaneously shooting with video-corder two regions, and the angle of two cameras can be adjusted arbitrarily, substantially meet the live application scenario demand shot with video-corder in real time.
Description
Technical field
The utility model is related to signal collecting device, more particularly to audio frequency and video camera-shooting and recording device.
Background technology
In application scenarios such as public security organs, procuratorial organs and people's court, hearing and banks, the collection demand of live real-time video and sound increasingly shows
Write.Prior art professional audiovisual camera-shooting and recording device is excessively professional, requires operator height, expensive, is unsuitable for being widely used in
Live recording is recorded a video, and easy camera and sound pick-up outfit are although simple to operate, but generally existing can only realize sound-recording function
Or recording function, video recording scene is single, video recording angle can not be adjusted etc. deficiency are only realized, cause prior art not
Application scenario can be shot with video-corder suitable for real-time live audio frequency and video very well, use environment is very restricted.
Utility model content
The technical problems to be solved in the utility model is to avoid the deficiencies in the prior art part and propose that one kind has concurrently and take the photograph
Picture, sound-recording function, integrated two camera head, and the dual camera video and audio recording arrangement that camera angle can be adjusted arbitrarily.
The utility model solves the technical problem can be realized by using following technical scheme：
Design, manufacture a kind of dual camera video and audio recording arrangement, including base, support bar, be provided with main camera
Main CCD camera assembly, and it is provided with the secondary CCD camera assembly of secondary camera.The bottom connect base of the support bar, the support
The bottom of main CCD camera assembly is rotatably coupled at the top of bar, the bottom of the secondary CCD camera assembly is rotatably coupled master and takes the photograph
As the top of head assembly, enable main camera that no more than 280 degree of angles are rotated in the horizontal plane at the center of excessively main camera, and
And in the vertical plane at the center of excessively main camera rotation be not more than 20 degree angles, enable secondary camera excessively pair camera in
The horizontal plane rotation of the heart is not more than 360 degree, and rotation is not more than 25 degree of angles in the vertical plane at the center of excessively secondary camera.Institute
State at least sound pick-up being provided with base for gathering audio signal for audio is included.
To realize the regulation for shooting with video-corder angle to main camera, the main CCD camera assembly also main shooting shell including tubulose
Body, is arranged on the support axostylus axostyle at top in the pipe of main shooting housing, to be fixedly connected on support bar, is respectively fixedly connected with capping
The main camera settings that are two mouths of pipe and being rotatably mounted around support axostylus axostyle two ends respectively of main shooting housing and main shooting top
Lid, be arranged on it is main shooting housing in, the mainboard fixture for fixedly mounting main camera, and at least one rotate push-and-pull key.
The main shooting housing is provided through the main shooting viewfinder window and push-and-pull through hole of the tube wall of the main shooting housing, and two turns
Axle depression；The mainboard fixture sets two trunnion axis that the inside pipe wall of oriented main shooting housing is protruded horizontally up；By inserting respectively
Enter two trunnion axis in two rotating shaft depressions, the mainboard fixture is rotatably connected in main shooting housing, and the rotation is pushed away
Key is drawn to be fixedly connected mainboard fixture through push-and-pull through hole, rotate push-and-pull key by push-and-pull moves in push-and-pull through hole, makes installation
Main camera mainboard fixture can in perpendicular relatively main shooting housing into rotation；Axostylus axostyle two is supported by being sleeved on
The main camera settings and main shooting top cover at end, by rotating main shooting housing to support axostylus axostyle as axle rotates, make to be installed with main taking the photograph
As the mainboard fixture of head being capable of relative support axostylus axostyle rotation in the horizontal plane.
Specifically, the main shooting housing includes being provided with main shooting viewfinder window, push-and-pull through hole and two rotating shaft depressions
Fore shell, and rear shell.The fore shell and rear shell link together and form the main shooting housing of tubulose.
It is additional illumination, the main CCD camera assembly also includes an at least light compensating lamp, and lampshade.The main shooting housing
On be machined with around it is main shooting viewfinder window set, at least one through this it is main shooting housing printing opacity through hole, the printing opacity lead to
Hole is covered by lampshade, the light compensating lamp being arranged in main shooting housing is projected light by printing opacity through hole and lampshade.
In main camera capping space between the two, the main shooting are kept in moving process in main shooting viewfinder
Head assembly also includes being machined with thereon the camera lens catch of positioning through hole.The positioning through hole is sleeved on main camera, is taken the photograph in master
During picture head is with mainboard fixture rotation process, camera lens catch is set to cover viewfinder window all the time.
It is dust and water protection, the main CCD camera assembly also includes main shooting packing ring and main shooting sealing ring.The master takes the photograph
As packing ring and main shooting sealing ring are installed in the middle of the bottom mouth of pipe of main shooting housing and main camera settings.
To realize the regulation for shooting with video-corder angle to secondary camera, the secondary CCD camera assembly is also sealed including its bottom mouth of pipe
Secondary shooting pedestal close, tubulose, rotational fixture is fixedly connected on the tumbler of secondary shooting base bottom, and for sealing
The secondary shooting top cover of the top mouth of pipe of the secondary shooting pedestal of lid.The pipe that the pair images pedestal is provided through on the secondary shooting pedestal
The secondary shooting viewfinder of wall, the secondary camera is arranged in secondary shooting pedestal, and can be regarded from pair shooting viewfinder collection
Frequency signal.The rotational fixture includes two fixed subcomponents, and the part of same diameter is both provided with the top of fixed subcomponent
Spherical recesses, when two fixed subcomponents link together, the centre of sphere of respective spherical calotte depression overlaps and is fixed rotating
The top of part synthesizes a part of spherical rotation depression；The tumbler includes the pedestal for being fixedly connected secondary shooting base bottom
Connecting portion, and it is connected to the pedestal connecting portion bottom, dome shape rotation ball seat；The bottom of the rotational fixture is fixed
The top of main CCD camera assembly is connected, rotation ball seat is bound round in the spherical calotte depression of two fixed subcomponents, so that turning
Dynamic ball seat is installed in rotation on spherical calotte and rotates in depression, and the secondary shooting pedestal can either be rotated in the horizontal plane,
Can be in vertical rotation in surface.
It is dust and water protection, the secondary CCD camera assembly also includes secondary shooting packing ring.The secondary shooting packing ring is installed in pair
Image between the top mouth of pipe of pedestal and secondary shooting top cover.
It is tamper, the secondary CCD camera assembly also includes lamina tecti.The lamina tecti is in tabular, and covering is taken the photograph installed in pair
As the top of top cover.
Specifically, the base includes base shell and base plate.Base shell and base plate close into a use
In the floor installation chamber of installing device.The base is additionally provided with the interface for realizing power supply connection and signal input output
Component；An at least loudspeaker, and balancing weight are also equipped with the base.
Compared with the existing technology compared with the utility model " dual camera video and audio recording arrangement " has technical effect that：
Have Voice ＆ Video recording function concurrently simultaneously；Set by dual camera and realize simultaneously taking the photograph two regions
Record, and the angle of two cameras can be adjusted arbitrarily, substantially meet the live application scenario demand shot with video-corder in real time.
Brief description of the drawings
Fig. 1 is the orthographic projection schematic front view of the utility model " dual camera video and audio recording arrangement " preferred embodiment；
Fig. 2 is the orthographic projection schematic rear view of the preferred embodiment；
Fig. 3 is that the orthographic projection of the preferred embodiment is right regarding schematic diagram；
Fig. 4 is the local axonometric projection schematic diagram of the main CCD camera assembly 1 of the preferred embodiment；
Fig. 5 is the local axonometric projection schematic diagram of the secondary CCD camera assembly 2 of the preferred embodiment；
Fig. 6 is the decomposing state axonometric projection schematic diagram of the secondary CCD camera assembly 2 of the preferred embodiment；
Fig. 7 is the decomposing state axonometric projection schematic diagram of the main CCD camera assembly 1 of the preferred embodiment；
Fig. 8 is the decomposing state axonometric projection schematic diagram of the base 3 of the preferred embodiment.
Specific embodiment
It is described in further detail below in conjunction with preferred embodiment shown in accompanying drawing.
The utility model proposes a kind of dual camera video and audio recording arrangement, as shown in Figures 1 to 8, including base 3, branch
Strut 4, is provided with the main CCD camera assembly 1 of main camera 11, and the secondary CCD camera assembly 2 for being provided with secondary camera 21.Institute
The bottom connect base 3 of support bar 4 is stated, the top of the support bar 5 is rotatably coupled the bottom of main CCD camera assembly 1, described
The bottom of secondary CCD camera assembly 2 is rotatably coupled the top of main CCD camera assembly 1, as shown in figure 4, enabling main camera 11
No more than 280 degree of angles are rotated in the horizontal plane at the center of excessively main camera 11 along arrow M1, and is taken the photograph in master excessively along arrow M2
As rotation is not more than 20 degree of angles in the vertical plane at first 11 center, as shown in figure 5, enabling secondary camera 21 along arrow N1 in mistake
The horizontal plane rotation at the center of secondary camera 21 is not more than 360 degree, and along arrow N2 in the perpendicular of the center of excessively secondary camera 21
Face interior rotation directly and be not more than 25 degree of angles.Be provided with the base 3 for audio signal is gathered for audio is included at least one
Sound pick-up.
The utility model has Voice ＆ Video recording function concurrently simultaneously.Set by dual camera and realized simultaneously to Liang Ge areas
Domain is shot with video-corder, and the angle of two cameras can be adjusted arbitrarily, substantially meets the live application scenario demand shot with video-corder in real time.
To realize the regulation for shooting with video-corder angle to main camera 11, the utility model preferred embodiment, as shown in Figure 1 to Figure 4, with
And shown in Fig. 7, the main CCD camera assembly 1 also main shooting housing 12 including tubulose is arranged in the pipe of main shooting housing 12
, the support axostylus axostyle 13 at top that is being fixedly connected on support bar 4, be respectively fixedly connected with two mouths of pipe of the main shooting housing 12 of capping
And main camera settings 14 that are being rotatably mounted around support axostylus axostyle 13 two ends respectively and main shooting top cover 15, be arranged on master and take the photograph
As the mainboard fixture 16 in housing 12, for fixedly mounting main camera 11, and at least one rotation push-and-pull key 17.In Fig. 7
Not shown main camera 11.The main shooting housing 12 is provided through the main shooting viewfinder of the tube wall of the main shooting housing 12
Mouth 121 and push-and-pull through hole 122, and two rotating shaft depressions 123.The mainboard fixture 16 sets the pipe of oriented main shooting housing 12
Two trunnion axis 161 that inwall is protruded horizontally up.By two trunnion axis 161 inserted respectively in two rotating shaft depressions 123, the mainboard is consolidated
Determine part 16 to be rotatably connected in main shooting housing 12, the rotation push-and-pull key 17 is fixedly connected master through push-and-pull through hole 122
Plate fixture 16, rotates push-and-pull key 17 and is moved in push-and-pull through hole 122 by push-and-pull, consolidates the mainboard for being installed with main camera 11
Determining part 16 can rotate in perpendicular relative to main shooting housing 12.By the main shooting bottom for being sleeved on support axostylus axostyle 13 two ends
Seat 14 and main shooting top cover 15, by rotating main shooting housing 12 to support axostylus axostyle 13 to be rotated for axle, make to be installed with main camera
11 mainboard fixture 16 relative support axostylus axostyle 13 can rotate in the horizontal plane.
The utility model preferred embodiment, as shown in fig. 7, the main shooting housing 12 includes being provided with main shooting viewfinder
The mouth 121, fore shell 128 of the rotating shaft depression 123 of push-and-pull through hole 122 and two, and rear shell 129；The fore shell 128 and rear shell 129 connect
It is connected together and forms the main shooting housing 12 of tubulose.
The utility model preferred embodiment, as shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 7, the main CCD camera assembly 1 is also included extremely
A few light compensating lamp, and lampshade 125.It is described it is main shooting housing 12 on be machined with around it is main shooting viewfinder window 121 set, extremely
Few one is covered through the main printing opacity through hole 124 for imaging housing, the printing opacity through hole 124 by lampshade 125, makes to be arranged on main shooting
Light compensating lamp in housing 12 can project light by printing opacity through hole 124 and lampshade 125.The utility model preferred embodiment is configured
Two printing opacity through holes 124 and two lampshades 125, correspondingly set two sets of light compensating lamps.
The utility model preferred embodiment, as shown in Figure 1 and Figure 7, the main CCD camera assembly 1 also includes being machined with thereon
The camera lens catch 18 of positioning through hole 181.The positioning through hole 181 is sleeved on main camera 11, in main camera 11 with master
In the rotation process of plate fixture 16, camera lens catch 18 is set to cover viewfinder window 121 all the time.
The utility model preferred embodiment, as shown in fig. 7, the main CCD camera assembly 1 also includes the main shooting He of packing ring 191
Main shooting sealing ring 192.The main shooting packing ring 191 and main shooting sealing ring 192 are installed in the lower tube of main shooting housing 12
In the middle of mouth and main camera settings 14, both for decorating, and for realizing the dustproof and waterproof to main shooting housing 12.
To realize the regulation for shooting with video-corder angle to secondary camera 21, such as the utility model preferred embodiment, Fig. 2, and Fig. 6
Shown, the secondary CCD camera assembly 2 also includes secondary shooting pedestal 22 that its bottom mouth of pipe is closed, tubulose, rotational fixture
23, the tumbler 24 of secondary shooting base bottom is fixedly connected on, and for covering the pair of the top mouth of pipe of secondary shooting pedestal 22
Shooting top cover 25.Secondary camera 21 not shown in Fig. 6.The pipe that the pair images pedestal is provided through on the secondary shooting pedestal 22
The secondary shooting viewfinder 221 of wall, the secondary camera 21 is arranged in secondary shooting pedestal 22, and can be from pair shooting viewfinder
221 collection vision signals.The rotational fixture 23 includes two fixed subcomponents 231, and the top of fixed subcomponent 231 is all set
There is the spherical calotte depression 2311 of same diameter, when two fixed subcomponents 231 link together, respective spherical calotte depression
2311 centre of sphere overlaps and synthesizes a part of spherical rotation depression at the top of rotational fixture 23.The tumbler 24 includes using
The pedestal connecting portion 241 of the bottom of pedestal 22 is imaged in pair is fixedly connected, and is connected to the bottom of pedestal connecting portion 241, ball
The rotation ball seat 242 of planar.The bottom of the rotational fixture 23 is fixedly connected the top of main CCD camera assembly 1, that is, leads
The main shooting top cover 15 of CCD camera assembly 1, makes rotation ball seat 242 be bound round in the spherical calotte depression of two fixed subcomponents 231,
Rotated in depression so that rotating ball seat 242 and being installed in rotation on spherical calotte, the secondary shooting pedestal 22 can either be in water
Rotation with surface, it is also possible in vertical rotation in surface.
The utility model preferred embodiment, as shown in fig. 6, the secondary CCD camera assembly 2 also includes secondary shooting packing ring 26.Institute
State secondary shooting packing ring 26 to be installed between the top mouth of pipe of secondary shooting pedestal 22 and secondary shooting top cover 25, both for decorating, use again
In the dustproof and waterproof for realizing imaging pair pedestal 22.
The utility model preferred embodiment, as shown in fig. 6, the secondary CCD camera assembly 2 also includes lamina tecti 27.The top
Cover plate 27 is in tabular, and covering is arranged on the top of secondary shooting top cover 25, both for decorating, and for preventing pair shooting top cover 25
Tear open.
The utility model preferred embodiment, as shown in figure 8, the base 3 includes base shell 31 and base plate 32.Bottom
Seat shell 31 and base plate 32 close into one is used for the floor installation chamber of installing device.The base 3 be additionally provided with for
Realize the interface module 33 of power supply connection and signal input output.It is also equipped with least in floor installation chamber in the base 3
One loudspeaker, and balancing weight 34.Because the dual camera video and audio recording arrangement is in thin-high shape, in order to prevent being touched easily
Hit and overturn, the balancing weight can reduce equipment entirety center of gravity, improve equipment stable in placement.
Claims (10)
1. a kind of dual camera video and audio recording arrangement, it is characterised in that：
Including base, support bar is provided with the main CCD camera assembly of main camera, and the secondary camera for being provided with secondary camera
Component；
The bottom connect base of the support bar, is rotatably coupled the bottom of main CCD camera assembly, institute at the top of the support bar
The bottom for stating secondary CCD camera assembly is rotatably coupled the top of main CCD camera assembly, enables main camera in excessively main camera
Center horizontal plane in rotation be not more than 280 degree of angles, and rotated in the vertical plane at the center of excessively main camera and be not more than
20 degree of angles, enable horizontal plane rotation of the secondary camera at the center of excessively secondary camera to be not more than 360 degree, and in excessively secondary shooting
Rotation is not more than 25 degree of angles in the vertical plane at the center of head；
At least sound pick-up for gathering audio signal for audio is included is provided with the base.
2. dual camera video and audio recording arrangement according to claim 1, it is characterised in that：
The main CCD camera assembly also includes
The main shooting housing of tubulose,
The support axostylus axostyle at top in the pipe of main shooting housing, to be fixedly connected on support bar is arranged on,
It is respectively fixedly connected with the masters that are two mouths of pipe and being rotatably mounted around support axostylus axostyle two ends respectively of the main shooting housing of capping
Camera settings and main shooting top cover,
Be arranged on it is main shooting housing in, the mainboard fixture for fixedly mounting main camera,
And at least one rotate push-and-pull key；
The main shooting housing is provided through the main shooting viewfinder window and push-and-pull through hole of the tube wall of the main shooting housing, and
Two rotating shaft depressions；The mainboard fixture sets two trunnion axis that the inside pipe wall of oriented main shooting housing is protruded horizontally up；By point
Two trunnion axis in two rotating shaft depressions are not inserted, and the mainboard fixture is rotatably connected in main shooting housing, described turn
Dynamic push-and-pull key is fixedly connected mainboard fixture through push-and-pull through hole, and rotate push-and-pull key by push-and-pull moves in push-and-pull through hole, makes
Be installed with main camera mainboard fixture can in perpendicular relatively main shooting housing into rotation；By being sleeved on support shaft
The main camera settings at bar two ends and main shooting top cover, by rotating main shooting housing to support axostylus axostyle as axle rotates, make to be installed with
The mainboard fixture of main camera being capable of relative support axostylus axostyle rotation in the horizontal plane.
3. dual camera video and audio recording arrangement according to claim 2, it is characterised in that：
The main shooting housing includes being provided with the fore shell of main shooting viewfinder window, push-and-pull through hole and two rotating shaft depressions, Yi Jihou
Shell；The fore shell and rear shell link together and form the main shooting housing of tubulose.
4. dual camera video and audio recording arrangement according to claim 2, it is characterised in that：
The main CCD camera assembly also includes an at least light compensating lamp, and lampshade；
It is described it is main shooting housing on be machined with around it is main shooting viewfinder window set, at least one through this it is main shooting housing it is saturating
Light through hole, the printing opacity through hole is covered by lampshade, enable the light compensating lamp being arranged in main shooting housing by printing opacity through hole and
Lampshade projects light.
5. dual camera video and audio recording arrangement according to claim 2, it is characterised in that：
The main CCD camera assembly also includes being machined with thereon the camera lens catch of positioning through hole；
The positioning through hole is sleeved on main camera, in main camera is with mainboard fixture rotation process, keeps off camera lens
Piece can cover viewfinder window all the time.
6. dual camera video and audio recording arrangement according to claim 2, it is characterised in that：
The main CCD camera assembly also includes main shooting packing ring and main shooting sealing ring；
The main shooting packing ring and main shooting sealing ring are installed in the middle of the bottom mouth of pipe of main shooting housing and main camera settings.
7. dual camera video and audio recording arrangement according to claim 1, it is characterised in that：
The secondary CCD camera assembly also includes secondary shooting pedestal that its bottom mouth of pipe is closed, tubulose, and rotational fixture is fixed
The tumbler of secondary shooting base bottom is connected to, and for covering the secondary shooting top cover of the top mouth of pipe of secondary shooting pedestal；
The secondary shooting viewfinder of the tube wall of pair shooting pedestal, the secondary camera peace are provided through on the secondary shooting pedestal
In pair shooting pedestal, and can be from pair shooting viewfinder collection vision signal；
The rotational fixture includes two fixed subcomponents, and the spherical calotte of same diameter is both provided with the top of fixed subcomponent
Depression, when two fixed subcomponents link together, the centre of sphere of respective spherical calotte depression overlap and in rotational fixture
Top synthesizes a part of spherical rotation depression；The tumbler includes the pedestal connection for being fixedly connected secondary shooting base bottom
Portion, and it is connected to the pedestal connecting portion bottom, dome shape rotation ball seat；The bottom of the rotational fixture is fixedly connected
The top of main CCD camera assembly, makes rotation ball seat be bound round in the spherical calotte depression of two fixed subcomponents, so that rotating ball
Seat is installed in rotation on spherical calotte and rotates in depression, and the secondary shooting pedestal can either be rotated in the horizontal plane, it is also possible to
In vertical rotation in surface.
8. dual camera video and audio recording arrangement according to claim 7, it is characterised in that：
The secondary CCD camera assembly also includes secondary shooting packing ring；
The secondary shooting packing ring is installed between the top mouth of pipe of secondary shooting pedestal and secondary shooting top cover.
9. dual camera video and audio recording arrangement according to claim 7, it is characterised in that：
The secondary CCD camera assembly also includes lamina tecti；
The lamina tecti is in tabular, and covering is arranged on the top of secondary shooting top cover.
10. dual camera video and audio recording arrangement according to claim 1, it is characterised in that：
The base includes base shell and base plate；Base shell and base plate close into one is used for the bottom of installing device
Seat installs chamber；
The base is additionally provided with the interface module for realizing power supply connection and signal input output；It is also equipped with the base
An at least loudspeaker, and balancing weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386940.XU CN206294248U (en) | 2016-12-16 | 2016-12-16 | Dual camera video and audio recording arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386940.XU CN206294248U (en) | 2016-12-16 | 2016-12-16 | Dual camera video and audio recording arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206294248U true CN206294248U (en) | 2017-06-30 |
Family
ID=59105373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621386940.XU Active CN206294248U (en) | 2016-12-16 | 2016-12-16 | Dual camera video and audio recording arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206294248U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756724A (en) * | 2019-01-17 | 2019-05-14 | 深圳市迪威泰实业有限公司 | A kind of portable binocular finance dedicated video camera |
| CN110107835A (en) * | 2019-06-04 | 2019-08-09 | 佛山市南海亮明电器有限公司 | A kind of rotatable outdoor lights of camera |
| CN113206945A (en) * | 2021-05-11 | 2021-08-03 | 深圳市日航新技术有限公司 | Distributed audio and video acquisition device |
-
2016
- 2016-12-16 CN CN201621386940.XU patent/CN206294248U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756724A (en) * | 2019-01-17 | 2019-05-14 | 深圳市迪威泰实业有限公司 | A kind of portable binocular finance dedicated video camera |
| CN110107835A (en) * | 2019-06-04 | 2019-08-09 | 佛山市南海亮明电器有限公司 | A kind of rotatable outdoor lights of camera |
| CN113206945A (en) * | 2021-05-11 | 2021-08-03 | 深圳市日航新技术有限公司 | Distributed audio and video acquisition device |
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