A file projection display device for business training

Abstract

The application discloses a file projection display device for business training and belongs to the technical field of projection display equipment. The device comprises a support frame, the top of the support frame is fixedly connected with a display frame, the top of the display frame is provided with a projector body capable of adjusting an angle, the upper inner sides of the display frame are fixedly provided with a projection curtain, the front of the projection curtain is provided with a protection winding part on the display frame, the protection winding part comprises first winding drums and second winding drums which are slidably arranged on the two sides of the display frame, and a protection cover which is wound between the first winding drums and the second winding drums. When the protection cover is cleaned, the protection winding part can be moved downwards to the cleaning part, the protection cover is inserted into the sponge brush cover and is cleaned through the back-and-forth winding movement, and the device has the technical effects of automatically cleaning the projection curtain protection structure and ensuring the continuity of equipment work.

Description

Technical Field

[0001] This invention belongs to the technical field of projection display equipment, and in particular relates to a projection display device for business training documents. Background Technology

[0002] In the course of business training, the projection display of documents and materials is a core element, and electronic courseware and other content need to be clearly presented to the trainees through projection equipment.

[0003] Chinese patent CN211062224U discloses a multimedia display device for Japanese language teaching, including a housing, hinges, a projection board, a latch, a projector, a baffle, a magnetic strip, a drawer, a scanning camera, a tray slide, and a tray. The drawer can be pulled out, and a teacher's personal computer can be placed on top of it. The personal computer is connected to the projector and scanning camera via a cable, allowing pre-prepared teaching content to be projected onto the projection board. The tray can also be pulled out, and paper teaching materials can be placed on it. The scanning camera scans images from the paper teaching materials and projects them onto the left side of the projection board, facilitating teaching. The projector board can be opened and closed for convenient use when multimedia presentations are needed, and can be folded or removed when not in use, making it easy to use.

[0004] However, when dust appears on the projection panel, the aforementioned device requires manual cleaning to avoid affecting the display effect. This operation is time-consuming and laborious, and the device can only be used after cleaning, which greatly affects the continuity of the projection equipment's operation and consequently its efficiency. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a document projection display device for business training, which has the advantages of automatically cleaning the projection screen protective structure and ensuring the continuous operation of the equipment, and solves the problems of manual cleaning of dust on the projection board, cumbersome operation and reduced efficiency in the prior art.

[0006] This invention is implemented as follows: a document projection display device for business training includes a support frame, a display frame fixedly connected to the top of the support frame, an adjustable projector body mounted on the top of the display frame, a projection screen fixedly mounted between the upper inner sides of the display frame, and a protective winding component mounted on the display frame corresponding to the front of the projection screen. The protective winding component includes a first winding drum and a second winding drum slidably mounted on both sides of the display frame, and a protective cover wound between the first winding drum and the second winding drum. The protective cover penetrates both sides of the display frame and covers the front of the projection screen. Cleaning components for cleaning the protective cover are fixedly mounted on the two inner sides of the lower part of the display frame. The cleaning components include paired sponge brush sleeves. When cleaning the protective cover, the protective winding component can move downward to the cleaning component, and the protective cover is inserted between the sponge brush sleeves, and the cleaning operation is achieved by the rewinding motion.

[0007] As a preferred embodiment of the present invention, the protective cover is made of flexible transparent plastic material, and a positioning sliding hole is provided between the two sides of the front of the display frame. The protective cover is inserted into the positioning sliding hole, and when cleaning, the protective cover can also move down along the positioning sliding hole to the cleaning part.

[0008] This design allows the flexible, transparent plastic protective cover to effectively protect the projection screen from dust without blocking the projection light and affecting the display effect, and it is also easy to roll up. The positioning sliding holes facilitate the stable installation and precise guidance of the protective cover, ensuring that it can be stably inserted between the sponge brush sleeves during cleaning, avoiding displacement that could lead to incomplete cleaning.

[0009] In a preferred embodiment of the present invention, the upper and lower ends of the first winding drum and the second winding drum are both connected to guide plates via bearings. Limiting sliders are fixedly connected to the inner side of the guide plates. Limiting grooves are provided on both outer walls of the display frame. The limiting sliders slide along the limiting grooves. Both the limiting sliders and the limiting grooves are T-shaped structures.

[0010] With this setup, the guide plate provides stable support for the winding drum. The T-shaped limit slider works in conjunction with the limit groove to ensure that the winding drum slides smoothly up and down along the display frame, while preventing it from shifting forward or backward or falling off during the sliding process, thus ensuring the stability and reliability of the movement of the protective winding component.

[0011] As a preferred embodiment of the present invention, a rotary motor is fixedly installed at the top of the guide plate above, and the output end of the rotary motor is fixedly connected to the corresponding first take-up drum and second take-up drum. Telescopic cylinders are fixedly installed on both sides of the support frame, and the output end of the telescopic cylinders is fixedly connected to the corresponding lower guide plate.

[0012] This setup provides power for the winding action of the first and second winding drums, enabling automatic winding of the protective cover; it also facilitates the up-and-down movement of the drive guide plate and the winding drum as a whole, allowing the protective cover to switch between the protective and cleaning positions, thus simplifying operation.

[0013] As a preferred embodiment of the present invention, a PLC controller is fixedly installed on the top front of the display frame, and the rotary motor and the telescopic cylinder are electrically connected to the PLC controller.

[0014] This setup facilitates the control of the rotary motor and telescopic cylinder, enabling the lowering, cleaning, and resetting of the protective cover, thus achieving automated control of the cleaning process and improving equipment efficiency.

[0015] As a preferred embodiment of the present invention, a support base is fixedly connected to the top of the display frame, and an adjusting rod is connected between the inner sides of the support base via a bearing. The projector body is fixedly installed at the end of the adjusting rod, and a stepper motor is fixedly installed on the outer side of the support base. The output end of the stepper motor is fixedly connected to the adjusting rod, and the stepper motor is electrically connected to the PLC controller.

[0016] With this setup, the stepper motor can drive the adjustment rod to rotate precisely, thereby adjusting the projection angle of the projector body. This makes it easy for the projector body to be aligned with the projection screen for projection. In conjunction with the PLC controller, precise angle control can be achieved, making it flexible to use.

[0017] As a preferred embodiment of the present invention, the cleaning component further includes a cleaning box fixed to the lower inner side of the display frame, the sponge brush sleeve is inserted into the cleaning box, the top of the cleaning box is open and used to pour in cleaning liquid, and through holes are provided on opposite surfaces of the cleaning box. When cleaning, the sponge brush sleeve fits against the front and back of the protective cover.

[0018] With this design, cleaning solution can be placed in the cleaning box during cleaning. The cleaning solution soaks the sponge brush sleeve through the through-hole, allowing the protective cover to perform wet cleaning during the roll-up process, thus improving the cleaning effect. At the same time, the sponge brush sleeve adopts a plug-in installation, which is convenient for later disassembly and replacement, making it easy to use.

[0019] As a preferred embodiment of the present invention, a collection box is placed on the support frame corresponding to the lower part of the sponge brush sleeve.

[0020] This setup allows the collection box to collect cleaning fluid drips and dust and impurities that come off during the cleaning process, preventing contamination of equipment and the floor and keeping the environment clean.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The protective cover is located on the front of the projection screen, which can effectively block dust from adhering. By rolling up the protective cover, a clean protective cover can be automatically replaced and placed on the surface of the projection screen for continued display, ensuring the continuity of the display work. When the protective cover is completely dirty and needs to be cleaned, it can be moved to the cleaning unit, and a sponge brush sleeve soaked in cleaning solution can be used to clean the front and back of the protective cover simultaneously. With the retraction and rolling motion of the protective cover, the cleaning is thorough, thereby effectively ensuring the display effect and usage efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the split structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the top structure of the cleaning component provided in an embodiment of the present invention; Figure 4 This is a partial enlarged structural diagram of the adjusting support rod provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the cleaning box structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the guide plate structure provided in an embodiment of the present invention.

[0023] In the diagram: 1. Support frame; 2. Display frame; 201. Limiting slide groove; 202. Positioning slide hole; 3. Projection screen; 4. Projector body; 401. Adjusting rod; 402. Stepper motor; 403. Support base; 5. First winding drum; 6. Second winding drum; 7. Protective cover; 8. Guide plate; 801. Rotary motor; 802. Telescopic cylinder; 803. Limiting slider; 9. Sponge brush sleeve; 901. Cleaning box; 902. Through hole; 10. PLC controller; 11. Collection box. Detailed Implementation

[0024] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0025] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] refer to Figures 1 to 6As shown in the figure, an embodiment of the present invention provides a document projection display device for business training, including a support frame 1. A display frame 2 is fixedly connected to the top of the support frame 1. An adjustable projector body 4 is installed on the top of the display frame 2. A projection screen 3 is fixedly installed between the upper inner sides of the display frame 2. A protective winding component is installed on the display frame 2 corresponding to the front of the projection screen 3. The protective winding component includes a first winding drum 5 and a second winding drum 6 slidably installed on both sides of the display frame 2, and a protective cover 7 wound between the first winding drum 5 and the second winding drum 6. The protective cover 7 penetrates both sides of the display frame and covers the front of the projection screen 3. Cleaning components for cleaning the protective cover 7 are fixedly installed on the two inner sides of the lower part of the display frame 2. The cleaning components include a pair of sponge brush sleeves 9. When cleaning the protective cover 7, the protective winding component can move downward to the cleaning component, and the protective cover 7 is inserted between the sponge brush sleeves 9 and the cleaning operation is achieved by the rewinding motion.

[0027] Specifically, the protective cover 7 is made of flexible transparent plastic material, and a positioning sliding hole 202 is provided between the two sides of the front of the display frame 2. The protective cover 7 is inserted into the positioning sliding hole 202. When cleaning, the protective cover 7 can also move down along the positioning sliding hole 202 to the cleaning part.

[0028] Using the above solution, the flexible transparent plastic protective cover 7 can effectively protect the projection screen 3 from dust without blocking the projection light and affecting the display effect, and it is also easy to roll up; the positioning sliding hole 202 facilitates the stable installation and precise guidance of the protective cover 7, ensuring that the protective cover 7 can be stably inserted between the sponge brush sleeves 9 during cleaning, avoiding displacement that would lead to incomplete cleaning.

[0029] Specifically, the upper and lower ends of the first winding drum 5 and the second winding drum 6 are both connected to the guide plate 8 through bearings. The inner side of the guide plate 8 is fixedly connected to the limit slider 803. The outer walls on both sides of the display frame 2 are provided with limit grooves 201. The limit slider 803 slides along the limit groove 201. Both the limit slider 803 and the limit groove 201 are T-shaped structures.

[0030] Using the above scheme, the guide plate 8 provides stable support for the winding drum. The T-shaped limiting slider 803 cooperates with the limiting slide groove 201 to achieve smooth up and down sliding of the winding drum along the display frame 2, and prevents forward and backward displacement or falling off during the sliding process, thus ensuring the stability and reliability of the movement of the protective winding component.

[0031] Specifically, a rotary motor 801 is fixedly installed on the top of the guide plate 8 above. The output end of the rotary motor 801 is fixedly connected to the corresponding first take-up drum 5 and second take-up drum 6. Telescopic cylinders 802 are fixedly installed on both sides of the support frame 1. The output end of the telescopic cylinders 802 is fixedly connected to the corresponding lower guide plate 8.

[0032] The above scheme provides power for the winding action of the first winding drum 5 and the second winding drum 6, realizing the automatic winding of the protective cover 7; it facilitates the up-and-down movement of the drive guide plate 8 and the winding drum as a whole, and completes the switching of the protective cover 7 between the protective position and the cleaning position, which is convenient for operation.

[0033] Specifically, a PLC controller 10 is fixedly installed on the top front of the display frame 2, and the rotary motor 801 and the telescopic cylinder 802 are both electrically connected to the PLC controller 10.

[0034] The above solution facilitates the control of the rotary motor 801 and the telescopic cylinder 802, and facilitates a series of actions such as lowering, cleaning, and resetting the protective cover 7, thereby achieving automated control of the cleaning process and improving the efficiency of equipment use.

[0035] Specifically, a support base 403 is fixedly connected to the top of the display frame 2, and an adjusting rod 401 is connected between the inner sides of the support base 403 through a bearing. The projector body 4 is fixedly installed at the end of the adjusting rod 401. A stepper motor 402 is fixedly installed on the outer side of the support base 403. The output end of the stepper motor 402 is fixedly connected to the adjusting rod 401, and the stepper motor 402 is electrically connected to the PLC controller 10.

[0036] Using the above solution, the stepper motor 402 can drive the adjusting rod 401 to rotate precisely, thereby driving the projector body 4 to adjust the projection angle, making it convenient for the projector body 4 to be aligned with the projection screen 3 for projection. With the help of the PLC controller 10, the angle can be precisely controlled, making it flexible to use.

[0037] Specifically, the cleaning component also includes a cleaning box 901 fixed to the lower inner side of the display frame 2. The sponge brush sleeve 9 is inserted into the cleaning box 901. The top of the cleaning box 901 is open and used to pour in cleaning liquid. Through holes 902 are provided on the opposite surfaces of the cleaning box 901. When cleaning, the sponge brush sleeve 9 fits against the front and back of the protective cover 7.

[0038] Using the above solution, during cleaning, cleaning liquid can be placed in the cleaning box 901. The cleaning liquid soaks the sponge brush sleeve 9 through the through hole 902, so that the protective cover 7 can achieve wet cleaning during the rewinding process, thus improving the cleaning effect. At the same time, the sponge brush sleeve 9 adopts a plug-in installation, which is convenient for later disassembly and replacement, and is easy to use.

[0039] Specifically, a collection box 11 is placed on the support frame 1 below the sponge brush sleeve 9.

[0040] By adopting the above solution, the collection box 11 can collect the cleaning liquid dripping during the cleaning process and the dust and impurities that are cleaned up, so as to avoid contaminating the equipment and the ground and keep the working environment clean.

[0041] Working principle of the invention: In use, connect the computer containing electronic documents to the projector body 4 (this is existing technology and will not be elaborated further). The PLC controller 10 sends a command to the stepper motor 402, driving the adjusting rod 401 to rotate precisely to adjust the projection angle of the projector body 4, ensuring that the projection light is accurately projected onto the projection screen 3, thus realizing the projection display of documents. When dust adheres to the protective cover 7 and affects the display effect, the rotary motor 801 is started. The first winding drum 5 winds up the dirty protective cover 7, and the second winding drum 6 extends the clean protective cover 7 to the surface of the projection screen 3, automatically replacing the clean protective cover 7 and continuing the display, ensuring the continuity of the display work. When the protective cover 7 is completely dirty and needs to be cleaned, the telescopic cylinder 802 is started to move the entire protective winding component down to the cleaning component. The sponge brush sleeve 9, which is soaked in cleaning fluid, cleans the front and back of the protective cover 7 simultaneously. With the rewinding motion of the protective cover 7, the cleaning is thorough, thus effectively ensuring the display effect and usage efficiency.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A document projection display device for business training, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to a display frame (2). The top of the display frame (2) is equipped with an adjustable projector body (4). A projection screen (3) is fixedly installed between the upper inner sides of the display frame (2). A protective winding component is installed on the display frame (2) corresponding to the front of the projection screen (3). The protective winding component includes a first winding drum (5) and a second winding drum (6) slidably installed on both sides of the display frame (2), and a protective cover (7) wrapped between the first winding drum (5) and the second winding drum (6). The protective cover (7) passes through both sides of the display frame and covers the front of the projection screen (3). Cleaning components for cleaning the protective cover (7) are fixedly installed on both inner sides of the lower part of the display frame (2). The cleaning components include a pair of sponge brush sleeves (9). When cleaning the protective cover (7), the protective winding component can move downward to the cleaning component, and the protective cover (7) is inserted between the sponge brush sleeves (9) and the cleaning operation is achieved by rewinding.

2. The document projection display device for business training as described in claim 1, characterized in that: The protective cover (7) is made of flexible transparent plastic material. A positioning sliding hole (202) is provided between the two sides of the front of the display frame (2). The protective cover (7) is inserted into the positioning sliding hole (202). When cleaning, the protective cover (7) can also move down along the positioning sliding hole (202) to the cleaning part.

3. The document projection display device for business training as described in claim 1, characterized in that: The upper and lower ends of the first winding drum (5) and the second winding drum (6) are connected to the guide plate (8) through bearings. The inner side of the guide plate (8) is fixedly connected to the limit slider (803). The outer walls on both sides of the display frame (2) are provided with limit grooves (201). The limit slider (803) slides along the limit groove (201). Both the limit slider (803) and the limit groove (201) are T-shaped structures.

4. The document projection display device for business training as described in claim 3, characterized in that: A rotary motor (801) is fixedly installed at the top of the guide plate (8) above. The output end of the rotary motor (801) is fixedly connected to the corresponding first take-up drum (5) and second take-up drum (6). Telescopic cylinders (802) are fixedly installed on both sides of the support frame (1). The output end of the telescopic cylinder (802) is fixedly connected to the corresponding lower guide plate (8).

5. The document projection display device for business training as described in claim 4, characterized in that: A PLC controller (10) is fixedly installed on the top front of the display frame (2), and the rotary motor (801) and telescopic cylinder (802) are electrically connected to the PLC controller (10).

6. The document projection display device for business training as described in claim 5, characterized in that: The top of the display frame (2) is fixedly connected to a support base (403). An adjusting rod (401) is connected between the inner sides of the support base (403) through a bearing. The projector body (4) is fixedly installed at the end of the adjusting rod (401). A stepper motor (402) is fixedly installed on the outer side of the support base (403). The output end of the stepper motor (402) is fixedly connected to the adjusting rod (401). The stepper motor (402) is electrically connected to the PLC controller (10).

7. The document projection display device for business training as described in claim 1, characterized in that: The cleaning component also includes a cleaning box (901) fixed to the lower inner side of the display frame (2). The sponge brush sleeve (9) is inserted into the cleaning box (901). The top of the cleaning box (901) is open and used to pour in cleaning liquid. Through holes (902) are provided on the opposite surfaces of the cleaning box (901). When cleaning, the sponge brush sleeve (9) fits against the front and back of the protective cover (7).

8. The document projection display device for business training as described in claim 1, characterized in that: A collection box (11) is placed on the support frame (1) below the sponge brush sleeve (9).

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