An intelligent projector with electronic whiteboard function

Abstract

The invention discloses an intelligent projector with an electronic whiteboard function, comprising a projector and a screen structure, wherein the screen structure is installed in a placement cover arranged opposite to the projector, the screen structure comprises a first rotating shaft and a white screen, lifting rods are symmetrically fixedly connected on both sides of the placement cover, a first rotating shaft is rotatably connected in the placement cover, a first placement tube is fixedly sleeved on the periphery of the first rotating shaft, a white screen is wound on the first placement tube, one end of the white screen passes through the lower end opening of the placement cover, and a first bottom rod is fixedly connected, a first motor is installed on the top of the placement cover, a writing mechanism is also rotatably connected in the placement cover, and the writing mechanism and the white screen are movably fitted. When the present invention is used, the key parts can be marked or supplemented by handwriting on the writing mechanism, which is more convenient to use, and the stability during writing can be improved by setting the lifting rod, and the fixing method is flexible and convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of projectors, in particular to an intelligent projector with an electronic whiteboard function. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals.

[0003] Projectors are widely used in teaching, office, home viewing and various exhibitions. While they are convenient to use, in the prior art, general projectors are not convenient for real-time annotation and supplement of the projected content during the projection process. Conventional operation methods can only be performed through computers, which lacks real-time interactive display. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent projector with an electronic whiteboard function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A smart projector with an electronic whiteboard function comprises a projector and a screen structure, wherein the screen structure is installed in a placement cover arranged opposite to the projector, the screen structure comprises a first rotating shaft and a white screen, lifting rods are symmetrically and fixedly connected on both sides of the placement cover, the lower end of the placement cover is opened, a first rotating shaft is rotatably connected inside the placement cover, a first placement tube is fixedly sleeved on the periphery of the first rotating shaft, a white screen is wound around the first placement tube, one end of the white screen passes through the lower end opening of the placement cover and is fixedly connected with a first bottom rod, the first bottom rod is assembled and connected to the end of the lifting rod, a first motor is installed on the top of the placement cover, the output end of the first motor and the periphery of the first rotating shaft are matched through a pulley transmission, a writing mechanism is also rotatably connected in the placement cover, and the writing mechanism and the white screen are movably fitted.

[0007] Furthermore, the writing mechanism is located on a side of the placement cover close to the projector, and the writing mechanism includes a second rotating shaft and a flexible whiteboard. A second placement tube is fixedly sleeved on the periphery of the second rotating shaft, and a flexible whiteboard is wrapped around the second placement tube. One end of the flexible whiteboard passes through the lower opening of the placement cover and is fixedly connected with a second bottom rod, which is movably clamped at the end of the lifting rod. A second motor is installed on the top of the placement cover, and the output end of the second motor and the periphery of the second rotating shaft are matched through a pulley transmission.

[0008] Furthermore, the projector, the first motor and the second motor are all electrically connected via a PC terminal.

[0009] Furthermore, a pressure sensor is provided on the side of the white screen away from the flexible whiteboard, and the pressure sensor is electrically connected to the projector via a PC terminal.

[0010] Furthermore, the lifting rod includes an outer tube, a connecting tube and a sliding rod. The outer tube is fixedly connected to both sides of the upper cover. A connecting tube is slidingly fitted in the outer tube. There are multiple groups of connecting tubes, and the multiple groups of connecting tubes are sleeved in stages. A sliding rod is slidingly fitted in the connecting tube. A connecting block is fixedly connected to the end of the sliding rod. The connecting block is connected and fitted to the first bottom rod and the second bottom rod.

[0011] Furthermore, the outer tube, the connecting tube and the sliding rod are movably sleeved together through sliding grooves and sliding blocks.

[0012] Furthermore, a through hole is horizontally provided in the connection block, and the first bottom rod horizontally passes through the through hole and is fixed by a nut sleeved on the end of the first bottom rod. A limiting hole is also embedded in the end surface of the connection block, the opening of the limiting hole is a strip structure, the inside of the limiting hole is a cylindrical cavity, and the inner diameter of the limiting hole is the same as the opening length.

[0013] Furthermore, the two ends of the second bottom rod are rotatably connected with limiting protrusions through bearings, the limiting protrusions and the limiting holes are arranged opposite to each other, and the ends of the limiting protrusions and the openings of the limiting holes have the same shape, and the thickness of the ends of the limiting protrusions is the same as the inner depth of the limiting holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the computer is electrically connected to the projector and the first motor and the writing mechanism placed in the upper cover; when projecting, the projector is projected onto a white screen; when writing is required, the writing mechanism is controlled to descend; key parts can be underlined or supplemented by handwriting or other pens on the writing mechanism; the use is more convenient; the stability during writing can be improved by setting the lifting rod; the fixing method is flexible and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the structure of an intelligent projector with electronic whiteboard function.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure in the AA direction.

[0017] Figure 3 for Figure 1 Schematic diagram of the structure in the BB direction.

[0018] Figure 4 The figure is a structural schematic diagram of a lifting rod in an intelligent projector with an electronic whiteboard function.

[0019] Figure 5 The present invention is a structural schematic diagram of a limiting protrusion in an intelligent projector with an electronic whiteboard function.

[0020] Figure 6 The figure is a structural diagram of a connection block in an intelligent projector with an electronic whiteboard function.

[0021] In the figure: 1-projector, 2-placement cover, 21-first rotating shaft, 22-first placement cylinder, 23-first motor, 24-white screen, 25-first bottom rod, 26-second rotating shaft, 27-second placement cylinder, 28-second motor, 29-flexible whiteboard, 3-lifting rod, 31-outer cylinder, 32-connecting cylinder, 33-sliding rod, 34-connecting block, 35-through hole, 36-limiting hole, 4-second bottom rod, 41-limiting protrusion. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figures 1 to 3 In an embodiment of the present invention, an intelligent projector with an electronic whiteboard function comprises a projector 1 and a screen structure, wherein the screen structure is installed in a placement cover 2 arranged opposite to the projector 1, the screen structure comprises a first rotating shaft 21 and a white screen 24, lifting rods 3 are symmetrically fixedly connected on both sides of the placement cover 2, the lower end of the placement cover 2 is opened, a first rotating shaft 21 is rotatably connected in the placement cover 2, a first placement tube 22 is fixedly sleeved on the periphery of the first rotating shaft 21, a white screen 24 is wound around the first placement tube 22, one end of the white screen 24 passes through the lower end opening of the placement cover 2, and a first bottom rod 25 is fixedly connected, the first bottom rod 25 is assembled and connected to the end of the lifting rod 3, a first motor 23 is installed on the top of the placement cover 2, the output end of the first motor 23 and the periphery of the first rotating shaft 21 are matched through a pulley transmission, a writing mechanism is also rotatably connected in the placement cover 2, and the writing mechanism and the white screen 24 are movably fitted.

[0025] The writing mechanism is located on the side of the placement cover 2 close to the projector 1. The writing mechanism includes a second rotating shaft 26 and a flexible whiteboard 29. The second rotating shaft 26 is fixedly sleeved with a second placement tube 27 on the periphery. The flexible whiteboard 29 is wound around the second placement tube 27. One end of the flexible whiteboard 29 passes through the lower end opening of the placement cover 2 and is fixedly connected with a second bottom rod 4. The second bottom rod 4 is movably connected to the end of the lifting rod 3. A second motor 28 is installed on the top of the placement cover 2. The output end of the second motor 28 and the periphery of the second rotating shaft 26 are matched through a pulley transmission. When in use, the second motor 28 is controlled to rotate to drive the second bottom rod 4 at the end of the flexible whiteboard 29 to rise and fall. When the second bottom rod 4 is flush with the first bottom rod 25, the end of the second bottom rod 4 can be connected to the lifting rod 3, so as to write on the surface of the flexible whiteboard 29. The flexible whiteboard 29 can be made of transparent polymer flexible material, which is easy to roll and easy to wipe dirt.

[0026] The projector 1 , the first motor 23 , and the second motor 28 are all electrically connected via a PC terminal, and the forward and reverse rotations of the first motor 23 and the second motor 28 and the projection of the projector 1 are controlled by terminal signals.

[0027] A pressure sensor is provided on the side of the white screen 24 away from the flexible whiteboard 29, and the pressure sensor and the projector 1 are electrically connected through the PC terminal. The pressure generated by writing on the surface of the flexible whiteboard 29 is transmitted to the white screen 24. After the electrical signal is fed back to the PC terminal, a corresponding curve is generated on the file projected by the PC terminal, and is projected onto the flexible whiteboard 29 through the projector 1, thereby producing a writing effect of an electronic whiteboard.

[0028] Example 2

[0029] See also Figures 4 to 6 In an embodiment of the present invention, a smart projector with an electronic whiteboard function is provided. On the basis of Embodiment 1, the lifting rod 3 includes an outer tube 31, a connecting tube 32 and a sliding rod 33. The outer tube 31 is fixedly connected to both sides of the upper cover 2. The outer tube 31 is provided with a connecting tube 32 for sliding cooperation. The connecting tube 32 is provided with a plurality of groups, and the plurality of groups of connecting tubes 32 are sleeved and cooperated with each other step by step. The connecting tube 32 is provided with a sliding rod 33 for sliding cooperation. The end of the sliding rod 33 is fixedly connected with a connecting block 34, and the connecting block 34 is connected and cooperated with the first bottom rod 25 and the second bottom rod 4.

[0030] The outer tube 31, the connecting tube 32 and the sliding rod 33 are movably connected with each other through the sliding groove and the sliding block. As the first motor 23 and the second motor 28 drive the white curtain 24 and the flexible white board 29 to rise and fall, the outer tube 31, the connecting tube 32 and the sliding rod 33 can be extended and retracted accordingly, and finally the support for the white curtain 24 can be maintained and the movable limit of the second bottom rod 4 at the end of the flexible white board 29 can be facilitated.

[0031] The connecting block 34 is provided with a through hole 35 horizontally therethrough, and the first bottom rod 25 horizontally passes through the through hole 35 and is fixed by a nut sleeved on the end of the first bottom rod 25. The end surface of the connecting block 34 is also embedded with a limiting hole 36, the opening of the limiting hole 36 is a strip structure, the inside of the limiting hole 36 is a cylindrical cavity, and the inner diameter of the limiting hole 36 is the same as the opening length.

[0032] The two ends of the second bottom rod 4 are rotatably connected by bearings to provide limiting protrusions 41, the limiting protrusions 41 and the limiting holes 36 are arranged opposite to each other, and the end of the limiting protrusion 41 and the opening shape of the limiting hole 36 are the same, the thickness of the end of the limiting protrusion 41 and the inner depth of the limiting hole 36 are the same, when the flexible whiteboard 29 is lowered, wait until the second bottom rod 4 and the first bottom rod 25 are flush, align the limiting protrusion 41 with the limiting hole 36 and insert it, and then rotate the limiting protrusion 41 to fix the flexible whiteboard 29 on one side of the white curtain 24, which is convenient for writing and more stable to use.

[0033] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An intelligent projector with an electronic whiteboard function, comprising a projector (1) and a screen structure, wherein the screen structure is installed in a placement cover (2) arranged opposite to the projector (1), characterized in that: The curtain structure comprises a first rotating shaft (21) and a white curtain (24); lifting rods (3) are symmetrically fixedly connected to the two sides of the placement cover (2); the lower end of the placement cover (2) is provided with an opening; the first rotating shaft (21) is rotatably connected inside the placement cover (2); a first placement tube (22) is fixedly sleeved on the periphery of the first rotating shaft (21); the white curtain (24) is wound around the first placement tube (22); one end of the white curtain (24) passes through the lower end opening of the placement cover (2) and is fixedly connected to a first bottom rod (25); the first bottom rod (25) is assembled and connected to the ends of the lifting rods (3); a first motor (23) is installed on the top of the placement cover (2); the output end of the first motor (23) and the periphery of the first rotating shaft (21) are matched through a pulley transmission; a writing mechanism is also rotatably connected in the placement cover (2); the writing mechanism and the white curtain (24) are movably fitted; The writing mechanism is located on a side of the placement cover (2) close to the projector (1), and comprises a second rotating shaft (26) and a flexible whiteboard (29); a second placement tube (27) is fixedly sleeved on the periphery of the second rotating shaft (26); a flexible whiteboard (29) is wound around the second placement tube (27); one end of the flexible whiteboard (29) passes through the lower opening of the placement cover (2) and is fixedly connected to a second bottom rod (4); the second bottom rod (4) is movably clamped to the end of the lifting rod (3); A pressure sensor is provided on the side of the white screen (24) away from the flexible whiteboard (29), and the pressure sensor is electrically connected to the projector (1) via a PC terminal; The lifting rod (3) comprises an outer cylinder (31), a connecting cylinder (32) and a sliding rod (33); the outer cylinder (31) is fixedly connected to two sides of the upper cover (2); the connecting cylinder (32) is slidably provided in the outer cylinder (31); the sliding rod (33) is slidably provided in the connecting cylinder (32); a connecting block (34) is fixedly provided at the end of the sliding rod (33); the connecting block (34) is connected and fitted to the first bottom rod (25) and the second bottom rod (4); The connecting block (34) is provided with a through hole (35) extending horizontally therethrough, the first bottom rod (25) passing horizontally through the through hole (35) and being movably limited and fixed by a nut sleeved on the end of the first bottom rod (25); the end surface of the connecting block (34) is also provided with a limiting hole (36) embedded therein, the opening of the limiting hole (36) being a strip-shaped structure, the inside of the limiting hole (36) being a cylindrical cavity, the inner cavity diameter of the limiting hole (36) being the same as the opening length; The second bottom rod (4) is rotatably connected at both ends via bearings to form a limiting protrusion (41), the limiting protrusion (41) and the limiting hole (36) are arranged opposite to each other, and the end of the limiting protrusion (41) and the opening of the limiting hole (36) have the same shape, and the thickness of the end of the limiting protrusion (41) and the inner cavity depth of the limiting hole (36) are the same.

2. The intelligent projector with electronic whiteboard function according to claim 1, characterized in that: A second motor (28) is mounted on the top of the placement cover (2), and an output end of the second motor (28) and the periphery of the second rotating shaft (26) are matched via a pulley transmission.

3. The intelligent projector with electronic whiteboard function according to claim 2, characterized in that: The projector (1), the first motor (23) and the second motor (28) are all electrically connected via a PC terminal.

4. The intelligent projector with electronic whiteboard function according to claim 2, characterized in that: The connecting tubes (32) are provided in a plurality of groups, and the plurality of groups of connecting tubes (32) are sleeved and matched with each other in a step-by-step manner.

5. The intelligent projector with electronic whiteboard function according to claim 4, characterized in that: The outer cylinder (31), the connecting cylinder (32) and the sliding rod (33) are movably sleeved together through a sliding groove and a sliding block.

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