CN116229768A - A multimedia device for public security education - Google Patents

Abstract

The invention discloses a multimedia equipment for public security education, which belongs to the field of projection equipment, and comprises a mounting case, a winding roller is installed inside the mounting case, a foreground film is wound on the winding roller, and a foreground film is wound on the bottom of the mounting case. There is a film outlet, and one end of the foreground film passes through the installation shell through the film outlet, and the end of the foreground film outside the installation shell is fixedly connected with a weight rod. In the present invention, the winding motor is turned on to unfold the foreground film, and then the power motor is turned on to insert the background cloth into the placement bag. When the lower end of the background cloth is inserted into the hidden groove, the foreground film will be covered by the background cloth from the rear end. The projector can then project the influence onto the foreground film. After the background cloth is inserted into the placement bag, the tape measure strip in the background cloth will play a supporting role. At this time, the entire foreground film is in a state of tension. Wrinkles on the foreground film can be eliminated, and at the same time, the entire foreground film is no longer soft and has a certain degree of wind resistance.

Description

A multimedia device for public security education

technical field

The invention relates to the field of projection equipment, in particular to a multimedia equipment for public security education.

Background technique

Projectors are often used in multimedia teaching, and the images are projected onto the projection cloth for display through the projector. However, the current projection cloth has a single structure, and the projection cloth is greatly affected by the environment when it is used. Shaking requires closing the doors and windows, and closing the doors and windows will seriously affect the indoor air environment, and the projection cloth is prone to wrinkles during the rolling process, and the folds cannot be flattened under the gravity of the projection cloth itself when it is used next time, so there are wrinkles The place will seriously affect the projection effect.

A Chinese patent discloses a multimedia device for educational informatization (authorized notification number CN114755881A). In the process of opening the curtain in this patent, the power part two simultaneously forces the screen to pass through the power part one, and is driven by the power part one. The combined vertical shaft mechanisms are vertically connected to partition the curtain modularly from the longitudinal direction of the curtain shake, and cooperate with gravity suspension, so that the overall hanging projection of the curtain is more stable and effectively avoids the problem of it being shaken by the wind. However, This patent is troublesome to use. When the information on the blackboard needs to be displayed, the curtain needs to be rolled up. In this patent, the unfolding and folding of the curtain is very troublesome, and the excessive number of rolling of the curtain will also affect the service life of the curtain. Therefore, the present invention provides a multimedia device for public security education to solve the problems raised above.

Contents of the invention

The purpose of the present invention is to provide a public security education multimedia equipment to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

A multimedia device for public security education, comprising an installation shell, a winding roller is installed inside the installation shell, a foreground film is wound on the winding roller, a film outlet is opened at the lower end of the installation shell, and the foreground film One end of the foreground film passes through the installation shell through the film outlet, and one end of the foreground film outside the installation shell is fixedly connected with a weight bar, and a background providing device is installed on the rear side of the winding roller;

The foreground film includes several transparent films, which are connected by connecting belts, the lower ends of the connecting belts are fixedly connected with the weight bar, and the rear ends of the transparent films are fixedly connected with placement bags;

The background providing device includes several roll-up shells, and background cloths are wound inside the roll-up shells. The width of the background cloths corresponds to the width of the placement bag, and the background cloths are respectively inserted in the placement bags. A tape measure is pasted inside the background cloth.

As a further solution of the present invention, a cleaning plate is also installed inside the installation shell, the cleaning plate is slidably connected with the installation shell, and the left end of the cleaning plate runs through the shell wall of the installation shell, and the foreground film is removed from the cleaning plate The interior passes through, and the interior of the cleaning board is fixedly connected with cleaning cotton, through which the surface of the foreground film can be cleaned.

As a further solution of the present invention, both upper and lower ends of the storage bag are in an open state, and an elastic frame is fixedly connected to the opening of the upper end of the storage bag.

As a further solution of the present invention, a support roller is also installed inside the installation shell, through which the foreground film can be perpendicular to the film outlet, and a support roller is also installed at the lower end of the installation shell, through which the foreground film can be The background cloth is perpendicular to the mouth of the bag, so that the background cloth can enter into the bag with the bag.

As a further solution of the present invention, a winding shaft is rotatably connected inside the winding shell, and several winding shafts are connected to each other, and the background cloth is wound on the winding shaft.

As a further solution of the present invention, a plurality of sliding grooves are provided on the inner shell wall of the rewinding shell, and a slider is slidably connected in the sliding groove, and a supporting spring is installed on one end of the slider, and the supporting spring located in the sliding groove.

As a further solution of the present invention, resisting blocks are installed between the sliders, and the resisting blocks are located on the left and right sides of the winding shaft.

Compared with prior art, the beneficial effect of the present invention is:

1. When the present invention is used, turn on the winding motor to unroll the foreground film, and then turn on the power motor to insert the background cloth into the placement bag. When the lower end of the background cloth is inserted into the hidden groove, the foreground film will be covered by the background cloth from the rear end. At this time, the projector can project the influence on the foreground film. After inserting the background cloth into the placement bag, the tape measure strip in the background cloth will play a supporting role. At this time, the entire foreground film is in a state of tension. Through In this way, the wrinkles on the foreground film can be eliminated, and at the same time, the entire foreground film is no longer soft and has certain wind resistance.

2. When the present invention is used, the entire foreground film can be made transparent again by turning on the power motor to roll the background cloth, thereby preventing the background cloth from blocking the information content on the blackboard. In this way, when it is necessary to display the information on the blackboard There is no need to pack up the entire foreground film, which can greatly increase the service life of the foreground film.

Description of drawings

FIG. 1 is a schematic structural diagram of a public security education multimedia device.

Fig. 2 is a split diagram of a multimedia device for public security education.

Fig. 3 is a structural diagram of a foreground film and a background providing device in a multimedia equipment for public security education.

Fig. 4 is an internal structure diagram of a multimedia device for public security education.

Fig. 5 is an internal structure diagram of a background providing device in a public security education multimedia device.

Fig. 6 is an enlarged view of A in Fig. 3 in a multimedia device for public security education.

Fig. 7 is a structural diagram of a cleaning board in a public security education multimedia device.

Fig. 8 is a structural diagram of a background cloth in a public security education multimedia device.

In the figure: 1. Installation shell; 2. Winding roller; 3. Foreground film; 4. Winding motor; 5. Cleaning plate; 6. Support roller; 7. Background providing device; 8. Power motor; 9. Background cloth ;10, baffle; 300, transparent film; 301, connecting belt; 302, counterweight bar; 303, hidden groove; 304, placing bag; 305, elastic frame; 501, cleaning cotton; Volume shell; 701, winding shaft; 702, discharge opening; 703, cleaning roller; 704, chamfering mouth; 705, tape measure strip; 706, slider;

Detailed ways

Embodiment one:

Please refer to Fig. 1, 2, 3, 6, 7, 8, in the embodiment of the present invention, a kind of public security education multimedia equipment, comprises installation shell 1, and the right end of installation shell 1 is equipped with winding motor 4, and the inside of installation shell 1 A winding roller 2 is installed, and the interior of the installation shell 1 is symmetrically fixedly connected with a fixed plate, the winding roller 2 is connected with the fixed plate in rotation, the winding roller 2 is connected with the winding motor 4, and the winding roller 2 is wound with a foreground film 3 The lower end of the installation shell 1 is provided with a film outlet, and one end of the foreground film 3 passes through the installation shell 1 through the film outlet, and the end of the foreground film 3 outside the installation shell 1 is fixedly connected with a counterweight rod 302, and the end of the installation shell 1 A cleaning plate 5 is also installed inside, and the cleaning plate 5 is slidingly connected with the installation shell 1, and the left end of the cleaning plate 5 runs through the shell wall of the installation shell 1, the foreground film 3 passes through the inside of the cleaning plate 5, and the inside of the cleaning plate 5 is fixedly connected There is a cleaning cotton 501, the surface of the foreground film 3 can be cleaned through the cleaning cotton 501, the lower end of the cleaning cotton 501 is provided with an anti-dropping opening 502, and the back side of the winding roller 2 is equipped with a background providing device 7;

The foreground film 3 comprises several transparent films 300, connected by connection strips 301 between several transparent films 300, the connection strips 301 and the transparent films 300 are pasted together, and the width of the connection strips 301 is less than 5 mm, and the lower ends of the connection strips 301 are connected to the Heavy bar 302 is fixedly connected, and the rear end of transparent film 300 is all fixedly connected with placement bag 304, and placement bag 304 is also made of transparent material, and the upper and lower ends of placement bag 304 are all in open state, and the upper end opening of placement bag 304 An elastic frame 305 is fixedly connected, and the elastic frame 305 is made of copper material. The upper end of the counterweight bar 302 is provided with a number of hidden grooves 303, and the hidden grooves 303 correspond to the placement pockets 304;

The background providing device 7 includes several roll-up shells 700, the number of roll-up shells 700 is the same as the number of transparent films 300, and the roll-up shells 700 correspond to the transparent films 300, and the roll-up shells 700 are all wrapped with background cloth 9, connecting belt The material of 301 is the same as that of the background cloth 9, the width of the background cloth 9 corresponds to the width of the placement bag 304, and the background cloth 9 is respectively inserted in the placement bag 304, and the lower ends of the background cloth 9 are all located in the hidden groove 303, A tape measure bar 705 is all pasted in the background cloth 9, (the material of the tape measure bar 705 is the same as the tape material for measuring distance in daily life).

Embodiment two:

Please refer to Fig. 4, 5, in conjunction with the basis of embodiment 1, the lower end of installation shell 1 is positioned at the film exit place and is also fixedly connected with baffle plate 10, and the inside of installation shell 1 is also equipped with support roller 6, can make by support roller 6 The foreground film 3 is perpendicular to the film outlet, and the lower end of the installation shell 1 is also equipped with a support roller 6. The background cloth 9 can be perpendicular to the pocket of the placement bag 304 by the support roller 6, so that the background cloth 9 can enter the belt placement bag 304. , the lower end of the installation shell 1 is also provided with a chamfered opening 704, through which the background cloth 9 can enter the placement bag 304 more smoothly;

The lower end of the rewinding shell 700 is provided with a discharge port 702, and the inside of the rewinding shell 700 is rotatably connected with a rewinding shaft 701, and several rewinding shafts 701 are connected to each other, and the right end of the installation shell 1 is fixedly connected with a power motor 8, and the power motor 8 is connected with the rewinding shaft 701, and the power motor 8 can drive the rewinding shaft 701 to rotate. The background cloth 9 is wound on the rewinding shaft 701. The inner shell wall of the rewinding shell 700 is provided with a number of sliding grooves. Block 706, a supporting spring 707 is installed on one end of the sliding block 706, and the supporting spring 707 is located in the sliding groove, and a resisting block 708 is also installed between the sliding blocks 706, and the resisting block 708 is positioned at the left and right sides of the rewinding shaft 701. 708 can make the background cloth 9 be rolled more tightly, avoiding that the tape measure bar 705 affects the rolling of the background cloth 9, and the background cloth 9 can also be guided by the resisting block 708 so that the background cloth 9 can move toward the winding shell 700. Moving outside, two cleaning rollers 703 are rotatably connected inside the winding shell 700 , and the background cloth 9 passes through the cleaning rollers 703 and the discharge port 702 in sequence.

The working principle of the present invention is:

When the present invention is in use, turn on the winding motor 4 to unroll the foreground film 3, and then turn on the power motor 8 to insert the background cloth 9 into the placement bag 304 (the background cloth 9 will only be wound under the support roller 6 when it is wound) It will not be completely rolled into the winding shell 700) When the lower end of the background cloth 9 is inserted into the hidden groove 303, the foreground film 3 will be covered by the background cloth 9 from the rear end, and the projector can project the influence to the foreground On the film 3, after the background cloth 9 is inserted into the placement bag 304, the tape measure strip 705 in the background cloth 9 will play a supporting role. At this time, the entire foreground film 3 is in a state of tension, and the foreground can be eliminated in this way. Wrinkles on the film 3, and at the same time make the entire foreground film 3 no longer soft and have a certain wind resistance in this way;

Rolling up the background cloth 9 by turning on the power motor 8 can make the whole foreground film 3 become transparent again, thereby preventing the background cloth 9 from blocking the information content on the blackboard. In this way, it is not necessary to display the information on the blackboard The entire foreground film 3 is put away, thereby greatly increasing the service life of the foreground film 3;

After use, the foreground film 3 can be put away, and the cleaning plate 5 can clean the foreground film 3 during the packing process. When the upper pocket of the bag 304 passes through the cleaning plate 5, the elastic frame 305 will be compressed deformation, so as to prevent the elastic frame 305 from affecting the winding of the foreground film 3 .

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (7)

1. A multimedia equipment for public security education, comprising an installation shell (1), characterized in that, the inside of the installation shell (1) is equipped with a winding roller (2), and the winding roller (2) is wound with a foreground film (3), the lower end of the installation shell (1) is provided with a film outlet, one end of the foreground film (3) passes through the installation shell (1) through the film outlet, and the foreground film (3) is located One end outside the installation shell (1) is fixedly connected with a counterweight rod (302), and a background providing device (7) is installed on the rear side of the winding roller (2); The foreground film (3) includes several transparent films (300), and the several transparent films (300) are connected by connecting belts (301), and the lower ends of the connecting belts (301) are all connected with the weight bars (302) Fixedly connected, the rear end of the transparent film (300) is fixedly connected with a placement bag (304); The background providing device (7) includes several roll-up shells (700), and a background cloth (9) is wound inside the roll-up shells (700), and the width of the background cloth (9) is the same as that of the placement bag (304). Corresponding to the width, and the background cloth (9) is respectively inserted in the placement bag (304), and a tape measure strip (705) is pasted in the background cloth (9). 2. A kind of multimedia equipment for public security education according to claim 1, characterized in that, the inside of the installation shell (1) is also equipped with a cleaning plate (5), and the cleaning plate (5) is connected with the installation shell (1) ) sliding connection, and the left end of the cleaning plate (5) runs through the shell wall of the installation shell (1), the foreground film (3) passes through the inside of the cleaning plate (5), and the inside of the cleaning plate (5) A cleaning cotton (501) is fixedly connected, and the surface of the foreground film (3) can be cleaned by the cleaning cotton (501). 3. A kind of multimedia equipment for public security education according to claim 1, characterized in that, the upper and lower ends of the placement bag (304) are in an open state, and the upper opening of the placement bag (304) is fixedly connected Elastic frame (305). 4. A kind of multimedia equipment for public security education according to claim 1, characterized in that, the inside of the installation shell (1) is also equipped with support rollers (6), by which the foreground film (3) can be ) is perpendicular to the film outlet, and the lower end of the installation shell (1) is also equipped with a support roller (6), by which the background cloth (9) can be made to be perpendicular to the sack of the placement bag (304), and then It is convenient for background cloth (9) to enter in the belt placement bag (304). 5. A kind of multimedia equipment for public security education according to claim 1, characterized in that, the inside of the rewinding shell (700) is connected to a rewinding shaft (701) in rotation, and several rewinding shafts (701) are connected to each other , the background cloth (9) is wound on the winding shaft (701). 6. A kind of public security education multimedia equipment according to claim 5, is characterized in that, on the inner shell wall of described rewinding shell (700), offer some sliding grooves, slide block ( 706), a supporting spring (707) is installed at one end of the slider (706), and the supporting spring (707) is located in the sliding groove. 7. A kind of multimedia equipment for public security education according to claim 6, characterized in that, a resisting block (708) is also installed between the sliders (706), and the resisting block (708) is located on the winding shaft (701 ) on the left and right sides.

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