CN211580083U

CN211580083U - Video shooting and recording device

Info

Publication number: CN211580083U
Application number: CN202020700515.3U
Authority: CN
Inventors: 李东旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-09-25
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a video shooting recording device, including clipboard and camera, the clipboard is fixed on the frame, the camera sets up the place ahead at the clipboard, the camera is connected with the control cabinet, the control cabinet sets up the one side at the clipboard, the clipboard is transparent, the demonstration person is located clipboard rear writing, still include the mirror image subassembly, the mirror image subassembly is close to the camera setting, the mirror image subassembly is the level crossing, the homonymy of level crossing mirror surface is arranged in to camera and clipboard, form the contained angle between the camera lens plane of level crossing and camera, the demonstration order adjustment that the camera caught the writing of blackboard is demonstration person's writing order. Shoot and record device, the camera sees through the transparent clipboard and can catch the blackboard writing on demonstration person and the clipboard simultaneously, the demonstration person is towards the viewer all the time, combines through blackboard writing, slide, has promoted the interactive effect of online teaching greatly.

Description

Video shooting and recording device

Technical Field

The utility model relates to a shoot and record the device, especially relate to a video shooting records device.

Background

In recent years, recording and broadcasting systems are more and more widely applied, the requirements of real-time recording, live broadcasting, later-period on-demand and the like of various activities in various industries are rapidly increased, and recorded video files are used for recording, learning and sharing. In particular, in the industries of schools and education and training, the construction of high-quality video resources is the key direction of the information construction of school education, such as video recording of video resources of high-quality classes, micro-classes, fine-quality classes and the like. Therefore, it is very urgent to generate a video course resource with high appreciation and good effect. However, the current support of this demanding productized application throughout the video recording industry has not met the expectations of users.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a video shooting recording device to solve the technical problem who mentions in the background art.

In order to achieve the above object, the utility model discloses a video shooting recording device's concrete technical scheme as follows:

the utility model provides a video shooting recording device, including clipboard and camera, the clipboard is fixed on the frame, the camera sets up the place ahead at the clipboard, the camera is connected with the control cabinet, the control cabinet sets up the one side at the clipboard, the clipboard is transparent, the demonstration person is located clipboard rear writing, still include the mirror image subassembly, the mirror image subassembly is close to the camera setting, the mirror image subassembly is the level crossing, the homonymy of level crossing mirror surface is arranged in to camera and clipboard, form the contained angle between the camera lens plane of level crossing and camera, the demonstration order adjustment that the mirror image subassembly caught the camera to the writing of blackboard writing is the order of demonstrating person.

Further, the angle between the plane mirror and the lens plane of the camera is 30 ° to 60 °.

Furthermore, the writing board is a transparent board made of glass or acrylic materials.

Furthermore, the shooting and recording device further comprises a background light source, the background light source comprises a top lamp and a light supplement lamp, the top lamp is arranged behind the demonstrator, the top lamp is a rear top lamp with a reflector curtain, the light supplement lamp is arranged close to the writing board, and the number of the writing tools and the number of the light supplement lamps to be started are determined according to the color of the reflector curtain.

Further, the light filling lamps include two sets of, and two sets of light filling lamps set up the left and right sides at the clipboard relatively, and every light filling lamp of group all includes key lamp and auxiliary lamp, and key lamp and auxiliary lamp set up respectively in the front and rear of clipboard.

Further, when the color of the reflector curtain is white, the writing tool is a water color pen, and 0-2 groups of light supplement lamps are turned on.

Further, when the color of the reflector curtain is non-white, the writing tool is a highlighter, and at least 1 group of light supplement lamps is turned on.

Further, the lateral wall of clipboard sets up LED lamp area, and LED lamp area is white lamp area, and LED lamp area sets up on the relative limit of clipboard or the four sides of clipboard.

Furthermore, the frame is made of metal materials, a groove for fixing the writing board is formed in the inner edge of the frame, and a buffer layer is arranged between the writing board and the groove.

Furthermore, the shooting and recording device further comprises a microphone and a prompter, wherein the microphone is used for amplifying the sound of the presenter, the microphone is connected with the loudspeaker, and the prompter is arranged on one side of the camera.

The utility model discloses a video shooting records device has following advantage:

video shooting record device set up transparent clipboard, the demonstration person is at the clipboard rear, the camera sees through transparent clipboard and can catch the blackboard-writing on demonstration person and the clipboard simultaneously for the demonstration person still can be towards the viewer when the blackboard-writing, and combine and viewer's interdynamic through materials such as blackboard-writing, slide, promoted online teaching's interactive effect greatly, the device simple structure, the blackboard-writing that makes the demonstration person write through the mirror image subassembly normally shows, the maintenance cost is low.

Drawings

Fig. 1 is a schematic structural view of the video shooting and recording apparatus of the present invention;

fig. 2 is a top view of the video recording device of the present invention;

FIG. 3 is a schematic structural view of the writing board of the present invention fixed to the frame;

FIG. 4 is a light path diagram of the present invention when the writing board is not writing;

FIG. 5 is a diagram of the light path of the writing board according to the present invention;

FIG. 6 is a light path diagram of the present invention without mirror image components;

fig. 7 is a light path diagram of the present invention after reflection by the plane mirror.

The reference numbers in the figures illustrate: 1. a writing board; 2. a frame; 3. a capture component; 31. a camera; 32. a console; 4. a light supplement lamp; 5. a loudspeaker; 6. a dome light; 7. a prompter device; 8. an LED light strip; 9. a buffer layer.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model discloses a video shooting recording device, including clipboard 1 and record subassembly 3, clipboard 1 is fixed on frame 2, record subassembly 3 includes camera 31 and control cabinet 32, camera 31 sets up the place ahead at clipboard 1, control cabinet 32 sets up the one side at clipboard 1, camera 31 is connected with control cabinet 32, clipboard 1 is transparent, still include the mirror image subassembly, the mirror image subassembly is close to the setting of camera 31, the presenter is located the rear writing blackboard writing of clipboard 1, the demonstration order that the camera 31 caught the blackboard writing adjusts the order of writing for the presenter.

The imaging principle of the camera 31 is the same as that of the eyeball of human eye, and after the light is captured by the lens of the camera 31, the light is captured by the photosensitive imaging sheet (transistor or other electronic element) of the camera 31 in the form of reverse image through the lens. As shown in fig. 6, if the presenter writes 123456 series of numbers, with the presenter facing straight ahead as a frame of reference, the number 1 is on the right side of the presenter and the number 6 is on the left side, and the image captured by the camera 31 is inverted with the number 1 on the left side and the number 6 on the right side. That is, the order of presentation of the board book as seen by the viewer is reversed from the order of writing by the presenter.

The mirror image component is a plane mirror, the camera 31 and the writing board 1 are arranged on the same side of the mirror surface of the plane mirror, and an included angle is formed between the plane mirror and the lens plane of the camera 31. The angle between the plane mirror and the lens plane of the camera 31 is between 30 ° and 60 °, preferably 45 °. As shown in fig. 7, when the presenter writes 123456 series of numbers with the presenter facing straight ahead as the frame of reference, the number 1 on the presenter's right side and the number 6 on the left side, and the camera 31 passes through a flat mirror placed at 45 degrees to the lens plane, the captured image is the number 1 on the right side and the number 6 on the left side, which is the same as the position seen by the presenter. With the assistance of the plane mirror, the image captured by the camera 31 is a vertically inverted image, and the characters are displayed in the correct order.

In addition, the mirror assembly may be a mirror component built into the camera 31 or mirror software built into the computer, so that the viewer sees the board book written in the normal order from left to right. At this time, the lens of the camera 31 is disposed to face the tablet 1.

The writing board 1 is a transparent board made of glass or acrylic materials, such as a low-iron ultra-white glass board, 1m × 2m or other sizes can be selected, the thickness of the writing board 1 is 0.5-1 cm, and preferably, the thickness of the writing board 1 is 1 cm.

The background light source comprises a top lamp 6 and a light supplement lamp 4, the top lamp 6 is arranged at the rear of a presenter, the top lamp 6 is a rear top lamp 6 with a polyester film reflector curtain and illuminates from the oblique rear of the presenter, the presenter writes on the writing board 1 by using a writing tool, the light supplement lamp 4 is arranged close to the writing board 1, and the writing tool is selected according to the color of the reflector curtain and the number of the light supplement lamp 4 is determined.

The light filling lamp 4 includes two sets ofly, and two sets of light filling lamps 4 set up in the left and right sides of clipboard 1 relatively, and every light filling lamp 4 of group all includes key lamp and auxiliary lamp, and key lamp and auxiliary lamp set up in the front and back of clipboard 1 for illuminating demonstration person and blackboard writing, according to the colour of background, confirm whether the light filling lamp 4 opens and the quantity opened. Fill light 4 is placed at a sufficient distance from tablet 1 so that camera 31 does not see their image on tablet 1.

When the color of the reflector curtain is white, a water color pen is selected, and 0-2 groups of light supplement lamps 4 are started; when the color of the reflector curtain is non-white, a highlighter is selected for writing, at least 1 group of light supplement lamps 4 are started, and a 6mm thick-head highlighter is used for achieving the best effect.

As shown in fig. 3, when the background is non-white, such as black, green, etc., the recording device further includes an LED strip 8 disposed on the sidewall of the tablet 1. The LED lamp strip 8 is a 12V or 220V voltage-driven white lamp strip, the LED lamp strip 8 is arranged on the opposite side of the writing board 1 or the four sides of the writing board 1, light emitted by the LED lamp strip 8 enters from the edge of the writing board 1, and the light is transmitted to all parts of the writing board 1 through total reflection in the writing board 1 to light the writing board 1.

When the demonstrator is not writing on the writing board 1, the light emitted from the LED lamp strip 8 is totally reflected in the writing board 1, and when the demonstrator is located behind the writing board 1 and writes on the writing board by the writing pen, the light emitted from the LED lamp strip 8 is reflected or refracted by the writing board and overflows to the outside of the writing board 1, and is recorded by the camera 31 after being mirrored by the mirror image component. The camera 31 can catch the presenter and the writing on the writing board 1 simultaneously through the transparent writing board 1, so that the presenter can still read the viewer when writing on the writing board, and the interaction effect of online teaching is greatly improved by combining the materials such as writing on the writing board and slides with the viewer.

LED lamp area 8 is connected with the brightness control ware electricity, and the brightness control ware can adjust the luminance of LED lamp area 8 voltage or electric current in order to adjust LED lamp area 8, helps controlling the luminance of clipboard 1 to promote the quality that the video was shot.

The frame 2 is the frame 2 made of materials such as timber, metal, the inner edge of frame 2 sets up the recess of fixed clipboard 1, behind the recess was arranged in on clipboard 1 each side, set up buffer layer 9 such as heat-conducting glue, bubble cotton between clipboard 1 and the recess. Preferably, the frame 2 is a metal frame 2 made of materials such as aluminum or steel, and the metal frame 2 is favorable for heat dissipation of the LED strip 8. The bottom of the frame 2 is provided with a supporting leg which can be a fixed supporting leg or a liftable supporting leg.

Besides, the writing board 1 can be fixed by the fixing holes and the bolts, and the fixing modes of the writing board 1 are various and are not described any more.

The environment light can reflect to the shooting signal source (camera 31/camera) through the glass face, and the light that monitoring computer screen or prompter 7 emitted also can reflect to the shooting signal source through the glass face, and this shooting recorder still includes the polaroid of setting in camera 31 camera lens department, and the polaroid can filter the polarized light that reflects to the shooting signal source from the glass face to promote the shooting effect.

In order to make the presenter sound, the shooting and recording device further includes a microphone for amplifying the presenter's voice, the microphone being connected to the loudspeaker 5. The microphone can be a wired professional microphone, so that the environmental noise can be effectively reduced, or a wireless microphone with a transmitter and a receiver is selected, and noise reduction cotton or noise reduction foam can be pasted on the wall surface in a space with larger echo, so that the echo is reduced.

Both the camera 31 and the microphone are connected to a console 32, the console 32 comprising at least one computer with a monitor, on which a video switcher is mounted that combines signals from the camera 31, microphone and other video sources with the prepared slides.

Total Internal Reflection (TIR), is an optical phenomenon. When light enters a medium with a lower refractive index from a medium with a higher refractive index, as shown in fig. 4, when light enters an air medium from a glass medium, the beads of the LED strip 8 are regarded as point light sources, and when the LED strip 8 is lighted, the incident angle of the light is larger than the critical angle (41.8 degrees) of the light entering the air from the glass calculated according to Snell's Law, so that the refracted light will disappear, and all the incident light will be reflected without entering the medium with the lower refractive index.

As shown in fig. 5, after writing on the writing board 1 by using the highlighter, the notes of the highlighter leave traces on the glass, which can be understood as a third medium other than glass and air, and the light in the writing board 1 no longer enters the air directly from the original glass at the traces, but passes through the trace medium left by the highlighter, thereby changing the medium route in the light propagation path, i.e. from the original glass-air to the glass-fluorescent trace-air, according to snell's law, the refraction medium and the refraction index in the equation change, so that the light is no longer totally reflected at the positions written by the fluorescence, and the colored particles in the ink also reflect the light to the front of the writing board 1, and then are captured by the camera 31.

In order to achieve the best shooting and recording effect, the shooting and recording device further comprises a prompter 7, wherein the prompter 7 is arranged on one side of the camera 31 and can be a large-size computer screen or a television.

The application also provides a video shooting and recording method, which mainly comprises the following steps:

setting the placing positions of the writing board 1 and the camera 31 according to the type of the mirror image assembly;

the camera 31 is turned on and the presenter writes the blackboard writing behind the writing board 1 and the mirror image assembly adjusts the presentation sequence in which the camera 31 captures the blackboard writing to the presentation sequence of the presenter.

In order to make the camera 31 shoot a clear picture, the recording method further includes a supplementary lighting step:

the number of the writing tools and the fill light 4 to be turned on is determined according to the color of the reflector curtain,

when the color of the reflector curtain is white, writing by using a water color pen, and starting 0-2 groups of light supplement lamps 4;

when the color of the reflector curtain is non-white, a fluorescent pen is used for writing, and at least 1 group of light supplement lamps 4 and the LED lamp strip 8 are started.

The recording method can be widely applied to various scenes such as video course recording, conference live broadcasting, live broadcasting tape delivery and the like.

This shoot and record device sets up transparent clipboard 1, and the presenter is in clipboard 1 rear, and camera 31 sees through transparent clipboard 1 and can catch the blackboard writing on presenter and clipboard 1 simultaneously for the presenter still can face the viewer when the blackboard writing, and combine and the viewer is interactive through materials such as blackboard writing, slide, has promoted the interactive effect of online teaching greatly. Meanwhile, the recording device is simple in structure, and the blackboard writing written by the presenter can be normally displayed through the mirror image assembly.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a video shooting recording device, including clipboard (1) and camera (31), clipboard (1) is fixed on frame (2), camera (31) set up the place ahead in clipboard (1), camera (31) are connected with control cabinet (32), control cabinet (32) set up the one side in clipboard (1), a serial communication port, clipboard (1) is transparent, the presenter is located clipboard book behind clipboard (1), still include the mirror image subassembly, the mirror image subassembly is close to camera (31) and sets up, the mirror image subassembly is the level crossing, the homonymy of level crossing mirror surface is arranged in to camera (31) and clipboard (1), form the contained angle between the camera lens plane of level crossing and camera (31), the demonstration order that the mirror image subassembly caught the clipboard book with camera (31) is adjusted to the writing order of presenter.

2. A video recording device according to claim 1, characterized in that the angle between the plane mirror and the lens plane of the camera (31) is between 30 ° and 60 °.

3. Device according to claim 1, characterized in that said writing board (1) is a transparent plate made of glass or acrylic.

4. The video shooting and recording device according to claim 1, characterized in that the shooting and recording device further comprises a background light source, the background light source comprises a ceiling lamp (6) and a fill-in light (4), the ceiling lamp (6) is arranged behind the presenter, the ceiling lamp (6) is a rear ceiling lamp (6) with a reflector curtain, the fill-in light (4) is arranged close to the writing board (1), and the number of the writing tools and the number of the fill-in light (4) to be turned on are determined according to the color of the reflector curtain.

5. The video shooting and recording device according to claim 4, wherein the light supplement lamps (4) comprise two groups, the two groups of light supplement lamps (4) are oppositely arranged on the left side and the right side of the writing board (1), each group of light supplement lamps (4) comprises a key lamp and an auxiliary lamp, and the key lamp and the auxiliary lamp are respectively arranged in front of and behind the writing board (1).

6. A video recording arrangement as claimed in claim 5, characterized in that, when the reflector curtain is white, the writing instrument is a water color pen and the number of light supplement lamps (4) is 0-2 groups.

7. A video recording arrangement as claimed in claim 5, characterized in that the writing means are highlighters and the fill lights (4) are activated in at least 1 group when the reflector shade is non-white.

8. The video recording device according to claim 7, wherein the side wall of the writing board (1) is provided with an LED strip (8), the LED strip (8) is a white strip, and the LED strip (8) is arranged on the opposite sides of the writing board (1) or on the four sides of the writing board (1).

9. A video recording device according to claim 1, characterized in that the frame (2) is a frame (2) made of a metal material, the inner edge of the frame (2) is provided with a groove for fixing the writing board (1), and a buffer layer (9) is arranged between the writing board (1) and the groove.

10. Video recording device according to claim 1, characterized in that it further comprises a microphone for amplifying the presenter's voice and an prompter (7), the microphone being connected to the loudspeaker (5), the prompter (7) being arranged on the side of the camera (31).