Display device

Abstract

The utility model relates to the technical field of projection equipment, in particular to a display device. The device comprises a bearing seat and a carrying plate, the carrying plate is fixed at the top of the bearing seat, an electric push rod is assembled at the top of the carrying plate, a projector is fixed at the output end of the electric push rod, a projection curtain is assembled on one side of the carrying plate, and an unfolding mechanism is assembled between the carrying plate and the projection curtain. An adjusting mechanism is assembled between the carrying plate and the electric push rod, the adjusting mechanism is used for adjusting the position of the projector, and the unfolding mechanism comprises a servo motor, a transmission screw rod, a round rolling column, a stretching rod and a dowel bar. According to the utility model, through the structural design of the unfolding mechanism and the adjusting mechanism, the device can be conveniently matched and used outdoors through the projector and the projection curtain, meanwhile, the projection curtain can be rolled up, and the angle of the projector is adjusted, so that a better projection effect of the projector is realized, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to a display device. Background Art

[0002] The projection device, also known as a "writing projector", is a projection optical instrument that provides a large-size screen. On the basis of a direct-projection slide projector, a reflector is added to change the light path so that the image of the slide placed flat on the object glass is projected onto the screen;

[0003] For example, a projection display device with a publication (announcement) number of CN207008275U solves the problem that the temperature in the projector housing is too high and people cannot detect it. The key points of its technical solution are that a first temperature detection unit for detecting the temperature change in the projector housing to output a first temperature detection signal, a first comparison unit coupled to the first temperature detection unit to receive the first temperature detection signal, a first control unit coupled to the first comparison unit to receive the first comparison signal and output a first control signal, a sound warning unit coupled to the first control unit to receive the first control signal and respond to the first control signal, and a first execution unit are provided in the projector housing;

[0004] In summary, it can be seen that the prior art has the following technical problems: during the use of the prior art, although the projector can be projected onto a screen, when it is displayed outdoors, an additional projection screen is required, which is inconvenient to operate. For this reason, we propose a display device. Utility Model Content

[0005] The purpose of the utility model is to provide a display device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A display device comprises a bearing seat and a carrying plate, wherein the carrying plate is fixed on the top of the bearing seat, an electric push rod is installed on the top of the carrying plate, a projector is fixed on the output end of the electric push rod, a projection screen is installed on one side of the carrying plate, an unfolding mechanism is installed between the carrying plate and the projection screen, and an adjustment mechanism is installed between the carrying plate and the electric push rod, and the adjustment mechanism is used to adjust the position of the projector.

[0008] Preferably, the unfolding mechanism includes a servo motor, a transmission screw, a circular winding column, a stretching rod and a force transmission rod, a servo motor is fixed to one end of the carrying plate, two ends of the inner bottom of the carrying plate are rotatably connected to a transmission screw through a bearing, one end of the servo motor passes through the inner side of the carrying plate and is fixed to the transmission screw, the outer side of the transmission screw is threadedly connected to the stretching rod, one side of the stretching rod is fixed to the projection screen, the top of the stretching rod is slidably connected to the force transmission rod, both ends of the force transmission rod are fixed to the inner side of the carrying plate, a circular winding column is fixed to the end of the projection screen away from the stretching rod, and both ends of the circular winding column are rotatably connected to the carrying plate.

[0009] Preferably, both ends of the circular winding column are sleeved with torsion spring sheets, one end of the torsion spring sheet is fixed to the circular winding column, and the other end of the torsion spring sheet is fixed to the inner side of the mounting plate.

[0010] Preferably, the adjusting mechanism includes a U-shaped load-bearing slot frame, a reduction motor, a movable arm, a force sliding column, a force moving frame and a transmission arm, a U-shaped load-bearing slot frame is fixed to one side of the mounting plate, a reduction motor is fixed to one side of the U-shaped load-bearing slot frame, a movable arm is fixed to the output end of the reduction motor, a force sliding column is fixed to one end of the movable arm, the outer side of the force sliding column is slidably connected to the force moving frame, a transmission arm is fixed to the top of the force moving frame, and the top of the transmission arm is assembled and connected to the electric push rod.

[0011] Preferably, a pin seat is fixed on the top of the mounting plate, the pin seat is rotatably connected to the electric push rod, a pulling column is fixed on the top of the transmission arm, a fixed frame is slidably connected to the outer side of the pulling column, and one end of the fixed frame is fixed to the electric push rod.

[0012] Preferably, a control mechanism is installed between the mounting plate and the projector, and the control mechanism is used to start and stop the projector.

[0013] Preferably, the control mechanism includes a first distance sensor, a controller and a second distance sensor, the first distance sensor is fixed to one side of the stretching rod, the controller is fixed to one end of the top of the mounting plate, the second distance sensor is fixed to the bottom of the projector, the second distance sensor is electrically connected to the first distance sensor through a wire, and the controller is electrically connected to the second distance sensor and the projector through a wire.

[0014] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0015] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0016] The utility model adopts the structural design of the unfolding mechanism and the adjusting mechanism, so that the device is convenient for outdoor use with a projector and a projection screen. At the same time, the projection screen can be rolled up, and the angle of the projector can be adjusted to achieve a better projection effect of the projector, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the servo motor and the mounting plate of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure of the circular winding column and the torsion spring sheet of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection structure of the U-shaped load-bearing trough frame and the carrying plate of the utility model;

[0022] Figure 5 It is a schematic diagram of the cutaway structure of the U-shaped load-bearing trough frame of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. bearing seat; 2. mounting plate; 3. electric push rod; 4. projector; 5. projection screen; 6. servo motor; 7. transmission screw; 8. round winding column; 9. stretching rod; 10. force transmission rod; 11. first distance sensor; 12. torsion spring; 13. U-shaped bearing slot frame; 14. reduction motor; 15. movable arm; 16. force sliding column; 17. force moving frame; 18. transmission arm; 19. pulling column; 20. fixed frame; 21. controller; 22. second distance sensor. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Example 1

[0027] Reference Figure 1-5 A display device includes a supporting base 1 and a carrying plate 2, the carrying plate 2 is fixed on the top of the supporting base 1, an electric push rod 3 is installed on the top of the carrying plate 2, a projector 4 is fixed on the output end of the electric push rod 3, a projection screen 5 is installed on one side of the carrying plate 2, an unfolding mechanism is installed between the carrying plate 2 and the projection screen 5, and an adjusting mechanism is installed between the carrying plate 2 and the electric push rod 3, and the adjusting mechanism is used to adjust the position of the projector 4.

[0028] The unfolding mechanism includes a servo motor 6, a transmission screw 7, a circular winding column 8, a stretching rod 9 and a force transmission rod 10. A servo motor 6 is fixed to one end of the mounting plate 2, and a transmission screw 7 is rotatably connected to the two ends of the inner bottom of the mounting plate 2 through a bearing. One end of the servo motor 6 passes through the inner side of the mounting plate 2 and is fixed to the transmission screw 7. The outer side of the transmission screw 7 is threadedly connected to the stretching rod 9. One side of the stretching rod 9 is fixed to the projection screen 5. The top of the stretching rod 9 is slidably connected to the force transmission rod 10. Both ends of the force transmission rod 10 are fixed to the inner side of the mounting plate 2. A circular winding column 8 is fixed to the end of the projection screen 5 away from the stretching rod 9. Both ends of the circular winding column 8 are rotatably connected to the mounting plate 2. When the servo motor 6 is started, the output end of the servo motor 6 drives the transmission screw 7 to rotate, thereby causing the stretching rod 9 to drive the projection screen 5 to move.

[0029] Both ends of the circular winding cylinder 8 are sleeved with torsion spring sheets 12, one end of the torsion spring sheets 12 is fixed to the circular winding cylinder 8, and the other end of the torsion spring sheets 12 is fixed to the inner side of the carrying plate 2. When the projection screen 5 is pulled and unfolded by the stretching rod 9, the projection screen 5 is wrapped around the outer side of the circular winding cylinder 8, so that the projection screen 5 drives the circular winding cylinder 8 to rotate, thereby tightening the torsion spring sheets 12 to generate a rotational force. Later, when the projection screen 5 needs to be stored, the stretching rod 9 drives the projection screen 5 to move back. At this time, the rotational force generated by the torsion spring sheets 12 causes the circular winding cylinder 8 to rotate and rewind the projection screen 5.

[0030] The adjustment mechanism includes a U-shaped load-bearing slot frame 13, a reduction motor 14, a movable arm 15, a force-applying sliding column 16, a force-applying moving frame 17 and a transmission arm 18. The U-shaped load-bearing slot frame 13 is fixed to one side of the mounting plate 2, the reduction motor 14 is fixed to one side of the U-shaped load-bearing slot frame 13, the movable arm 15 is fixed to the output end of the reduction motor 14, the force-applying sliding column 16 is fixed to one end of the movable arm 15, the outer side of the force-applying sliding column 16 is slidably connected to the force-applying moving frame 17, and the top of the force-applying moving frame 17 is fixed to the transmission arm 18. Arm 18, the top of the transmission arm 18 is assembled and connected with the electric push rod 3. When the angle of the projector 4 needs to be adjusted, the reduction motor 14 is started, and the output end of the reduction motor 14 drives the movable arm 15 and the force sliding column 16 to rotate, so that the force sliding column 16 pushes the force moving frame 17 and the transmission arm 18 to move upward through the inner side of the force moving frame 17, so that the transmission arm 18 drives the pulling column 19 to push the fixed frame 20 and the electric push rod 3 to rotate, thereby realizing the adjustment of the angle of the projector 4.

[0031] A pin seat is fixed on the top of the mounting plate 2, and the pin seat is rotatably connected to the electric push rod 3. A pulling column 19 is fixed on the top of the transmission arm 18, and a fixed frame 20 is slidably connected to the outer side of the pulling column 19. One end of the fixed frame 20 is fixed to the electric push rod 3. The pulling column 19 can move along the inner side of the fixed frame 20 under the action of external force, so that the pulling column 19 can push the fixed frame 20 to drive the electric push rod 3 to rotate.

[0032] Example 2

[0033] Embodiment 1 is further optimized, specifically, as Figure 1-4 As shown, a control mechanism is installed between the mounting plate 2 and the projector 4, and the control mechanism is used to start and stop the projector 4.

[0034] The control mechanism includes a first distance sensor 11, a controller 21 and a second distance sensor 22. The first distance sensor 11 is fixed on one side of the stretching rod 9, the controller 21 is fixed on one end of the top of the mounting plate 2, and the second distance sensor 22 is fixed on the bottom of the projector 4. The second distance sensor 22 is electrically connected to the first distance sensor 11 through a wire, and the controller 21 is electrically connected to the second distance sensor 22 and the projector 4 through a wire. When winding is required, the controller 21 has already set the distance threshold between the first distance sensor 11 and the second distance sensor 22. When the servo motor 6 is started, the output end of the servo motor 6 drives the transmission screw 7 to rotate, so that the stretching rod 9 drives the projection screen 5 to be wound up, and the first distance sensor 11 moves synchronously with the stretching rod 9. When the distance between the first distance sensor 11 and the second distance sensor 22 reaches the set threshold, the second distance sensor 22 transmits a signal to the controller 21, and the controller 21 controls the projector 4 to turn off after processing the signal.

[0035] From the above, we can know that:

[0036] The utility model aims at the technical problem that, in the process of using the existing technology, although the projector can be projected onto the screen, when displaying outdoors, an additional projection screen is required, which is inconvenient to operate; the technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solutions is:

[0037] When in use, first start the electric push rod 3 so that the output end of the electric push rod 3 drives the projector 4 to move. When it moves to the specified position, the distance threshold between the first distance sensor 11 and the second distance sensor 22 is set through the controller 21, and then the servo motor 6 is started. The output end of the servo motor 6 drives the transmission screw 7 to rotate. Because the transmission screw 7 is threadedly connected with the stretching rod 9, and the stretching rod 9 is slidably connected with the force transmission rod 10, the stretching rod 9 can drive the projection screen 5 to unfold. At the same time, the first distance sensor 11 moves synchronously with the stretching rod 9. When the distance between the first distance sensor 11 and the second distance sensor 22 reaches the set threshold, the second distance sensor 22 transmits a signal to the controller 21. The controller 21 controls the projector 4 to start after processing the signal, so that the projector 4 projects the image on the projection screen 5 for intuitive display.

[0038] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0039] The utility model makes it easy to use the device outdoors with a projector 4 and a projection screen 5 through the structural design of the unfolding mechanism and the adjusting mechanism. At the same time, the projection screen 5 can be rolled up, and the angle of the projector 4 can be adjusted to achieve a better projection effect of the projector 4, thereby improving the user experience.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A display device, characterized in that: The invention comprises a bearing seat (1) and a carrying plate (2), wherein the carrying plate (2) is fixed on the top of the bearing seat (1), an electric push rod (3) is mounted on the top of the carrying plate (2), a projector (4) is fixed on the output end of the electric push rod (3), a projection screen (5) is mounted on one side of the carrying plate (2), an unfolding mechanism is mounted between the carrying plate (2) and the projection screen (5), and an adjusting mechanism is mounted between the carrying plate (2) and the electric push rod (3), and the adjusting mechanism is used to adjust the position of the projector (4).

2. A display device according to claim 1, characterized in that: The unfolding mechanism comprises a servo motor (6), a transmission screw (7), a circular winding column (8), a stretching rod (9) and a force transmission rod (10). The servo motor (6) is fixed to one end of the carrying plate (2). The two ends of the inner bottom of the carrying plate (2) are rotatably connected to a transmission screw (7) through bearings. One end of the servo motor (6) passes through the inner side of the carrying plate (2) and is fixed to the transmission screw (7). The outer side of the transmission screw (7) is threadedly connected to the stretching rod (9). One side of the stretching rod (9) is fixed to the projection screen (5). The top of the stretching rod (9) is slidably connected to the force transmission rod (10). Both ends of the force transmission rod (10) are fixed to the inner side of the carrying plate (2). The circular winding column (8) is fixed to the end of the projection screen (5) away from the stretching rod (9). Both ends of the circular winding column (8) are rotatably connected to the carrying plate (2).

3. A display device according to claim 2, characterized in that: Both ends of the circular winding column (8) are sleeved with torsion spring sheets (12), one end of the torsion spring sheet (12) is fixed to the circular winding column (8), and the other end of the torsion spring sheet (12) is fixed to the inner side of the mounting plate (2).

4. A display device according to claim 1, characterized in that: The adjusting mechanism comprises a U-shaped bearing slot frame (13), a reduction motor (14), a movable arm (15), a force-applying sliding column (16), a force-applying moving frame (17) and a transmission arm (18); a U-shaped bearing slot frame (13) is fixed on one side of the carrying plate (2); a reduction motor (14) is fixed on one side of the U-shaped bearing slot frame (13); a movable arm (15) is fixed on the output end of the reduction motor (14); a force-applying sliding column (16) is fixed on one end of the movable arm (15); an outer side of the force-applying sliding column (16) is slidably connected to a force-applying moving frame (17); a transmission arm (18) is fixed on the top of the force-applying moving frame (17); and the top of the transmission arm (18) is assembled and connected to the electric push rod (3).

5. A display device according to claim 4, characterized in that: A pin seat is fixed on the top of the mounting plate (2), and the pin seat is rotatably connected to the electric push rod (3). A pulling column (19) is fixed on the top of the transmission arm (18), and a fixed frame (20) is slidably connected to the outer side of the pulling column (19), and one end of the fixed frame (20) is fixed to the electric push rod (3).

6. A display device according to claim 2, characterized in that: A control mechanism is installed between the mounting plate (2) and the projector (4), and the control mechanism is used to control the start and stop of the projector (4).

7. A display device according to claim 6, characterized in that: The control mechanism comprises a first distance sensor (11), a controller (21) and a second distance sensor (22); the first distance sensor (11) is fixed to one side of the stretching rod (9); the controller (21) is fixed to one end of the top of the mounting plate (2); the second distance sensor (22) is fixed to the bottom of the projector (4); the second distance sensor (22) is electrically connected to the first distance sensor (11) via a wire; and the controller (21) is electrically connected to the second distance sensor (22) and the projector (4) via a wire.

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