A projection display device

Abstract

The utility model provides a projection display device, which relates to the technical field of projection equipment, including a load-bearing rod, a reel rod is rotatably arranged inside the load-bearing rod, a projection screen is wound on the surface of the reel rod, a cloth support rod is installed at the bottom of the projection screen, a driving gear is fixed on the surface of the reel rod, a servo motor is mounted on the side of the load-bearing rod, the output end of the servo motor is fixedly connected to one end of the reel rod, a rotating rod is rotatably arranged inside the load-bearing rod, a cleaning roller is fixed on the surface of the rotating rod, and a driven gear is fixed on the surface of the rotating rod. When the utility model reels up the projection screen through the reel rod, the cleaning roller can be driven to rotate synchronously, and then the cleaning roller can roll and remove dust on the surface of the projection screen, so that dust removal is convenient and projection display is convenient. Secondly, the projection screen is driven to adjust its position by adjusting the lifting and lowering of the adjusting rod, so as to facilitate the adjustment of the comfortable viewing height of the projection screen and improve the viewing comfort.

Description

Technical Field

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

[0002] Software development is a program written on a computer. With the development of science and technology and the gradual improvement of people's living standards, the impact of software on people is becoming more and more important, and it has gradually become an irreplaceable part of life. In general, during the software development process, software engineers will regularly use projection display equipment to introduce software functions and development steps, so as to regularly summarize the software and discover software vulnerabilities, so as to further modify the software.

[0003] When the projection screen of a general projection display device is used, it needs to be lowered and unfolded through a winding device, and then the projector will project the image. When it is not needed, the projection screen will be rolled up. Therefore, dust will accumulate on the surface of the projection screen over a long period of time, causing a large amount of dust to fill the air when the screen is rolled up, affecting respiratory health. Secondly, the height of the screen remains in a fixed position after it is unfolded and cannot be adjusted, causing the viewer to maintain an uncomfortable upward posture for a long time.

[0004] Therefore, there is an urgent need for a projection display device that can solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and solve the problem proposed in the above background technology that dust will accumulate on the surface of the projection screen after a long time, resulting in a large amount of dust filling the air when the screen is rolled up, affecting respiratory health; secondly, the height of the screen after unfolding remains in a fixed position and cannot be adjusted, causing the viewer to maintain an uncomfortable upward posture for a long time.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a projection display device, including a load-bearing rod, a winding rod is rotatably arranged inside the load-bearing rod, a projection screen is wrapped on the surface of the winding rod, a cloth-supporting rod is installed at the bottom end of the projection screen, a driving gear is fixed on the surface of the winding rod, a servo motor is installed on the side of the load-bearing rod, the output end of the servo motor is fixedly connected to one end of the winding rod, a rotating rod is rotatably arranged inside the load-bearing rod, a cleaning roller is fixed on the surface of the rotating rod, a driven gear is fixed on the surface of the rotating rod, the driven gear is meshed with the driving gear, a top plate is installed inside the load-bearing rod, the cleaning roller is inserted between the cleaning roller and the top plate, an adjusting rod is fixed at the bottom end of the load-bearing rod, a support rod is sleeved on the surface of the adjusting rod, a fixing block is fixed on the surface of the support rod, and a buckle assembly is arranged inside the fixing block.

[0007] Preferably, the radial diameter of the driving gear is greater than the radial diameter of the driven gear.

[0008] Preferably, a vacuum cleaner is installed at the top of the load-bearing rod, and dust suction pipes at both ends of the vacuum cleaner are connected to dust hoods. The dust hood is arranged at the top of the load-bearing rod, and the dust hood is communicated with the inside of the load-bearing rod.

[0009] Preferably, the buckle assembly includes a pin arranged inside the fixed block, a baffle is fixed on the surface of the pin, a spring is sleeved on the surface of the baffle, two ends of the spring respectively abut against the surface of the baffle and the inner wall of the fixed block, a pulling block is fixed to one end of the pin outside the fixed block, and a circular hole is opened on the surface of the adjusting rod, and one end of the pin is inserted into the circular hole on the surface of the adjusting rod.

[0010] Preferably, one end of the latch pin that is inserted into the circular hole on the surface of the adjusting rod is chamfered.

[0011] Preferably, a stopper is fixed on the surface of the reeling rod, and the stopper is arranged on both sides of the projection screen on the surface of the reeling rod.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are: when the projection screen is rolled up by rotating the winding rod, the cleaning roller can be driven to rotate synchronously, and then the cleaning roller can roll and remove the dust on the surface of the projection screen, making dust removal convenient and convenient for projection display. Secondly, the projection screen can be adjusted in position by adjusting the lifting and lowering of the adjustment rod, so as to facilitate adjusting the comfortable viewing height of the projection screen and improve viewing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the three-dimensional structure of a device provided according to an embodiment of the utility model is shown;

[0014] Figure 2 A schematic diagram of the planar structure of a device provided according to an embodiment of the utility model is shown;

[0015] Figure 3 The embodiment provided according to the utility model is shown Figure 2 A schematic diagram of the enlarged structure in the middle.

[0016] Legend:

[0017] 1. Load-bearing rod; 2. Winding rod; 201. Projection screen; 202. Cloth supporting rod; 203. Driving gear; 204. Servo motor; 3. Rotating rod; 301. Cleaning roller; 302. Driven gear; 303. Top plate; 4. Vacuum cleaner; 401. Dust hood; 5. Adjusting rod; 501. Support rod; 6. Fixed block; 601. Latch; 602. Block; 603. Spring; 604. Pull block; 7. Block. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] like Figures 1 to 3 As shown, in the embodiment of the utility model: a projection display device, including a load-bearing rod 1, a winding rod 2 is rotatably arranged inside the load-bearing rod 1, a projection screen 201 is wound on the surface of the winding rod 2, a cloth support rod 202 is installed at the bottom end of the projection screen 201, a driving gear 203 is fixed on the surface of the winding rod 2, a servo motor 204 is installed on the side of the load-bearing rod 1, the output end of the servo motor 204 is fixedly connected to one end of the winding rod 2, a rotating rod 3 is rotatably arranged inside the load-bearing rod 1, a cleaning roller 301 is fixed on the surface of the rotating rod 3, a driven gear 302 is fixed on the surface of the rotating rod 3, the driven gear 302 is meshed with the driving gear 203, a top plate 303 is installed inside the load-bearing rod 1, the cleaning roller 301 is inserted between the cleaning roller 301 and the top plate 303, an adjusting rod 5 is fixed at the bottom end of the load-bearing rod 1, a support rod 501 is sleeved on the surface of the adjusting rod 5, a fixing block 6 is fixed on the surface of the support rod 501, and a buckle assembly is arranged inside the fixing block 6.

[0021] The radial diameter of the driving gear 203 is greater than that of the driven gear 302, so that the driven gear 302 can rotate rapidly by driving the rotating rod 3, and then the rotating rod 3 drives the cleaning roller 301 to rotate rapidly to clean the dust on the surface of the projection screen 201.

[0022] A vacuum cleaner 4 is installed at the top of the load-bearing rod 1. Dust suction pipes at both ends of the vacuum cleaner 4 are connected to dust hoods 401. The dust hood 401 is set at the top of the load-bearing rod 1. The dust hood 401 is communicated with the inside of the load-bearing rod 1. After the dust on the surface of the projection screen 201 is removed inside the load-bearing rod 1, the dust inside the load-bearing rod 1 is sucked away by the dust hood 401 due to the suction force generated by the vacuum cleaner 4 being powered on, thereby preventing the dust from diffusing into the surrounding air.

[0023] The buckle assembly includes a latch 601 arranged inside the fixed block 6, a blocking piece 602 is fixed on the surface of the latch 601, a spring 603 is sleeved on the surface of the blocking piece 602, two ends of the spring 603 respectively abut against the surface of the blocking piece 602 and the inner wall of the fixed block 6, a pulling block 604 is fixed to one end of the latch 601 outside the fixed block 6, and a circular hole is opened on the surface of the adjusting rod 5, and one end of the latch 601 is inserted into the circular hole on the surface of the adjusting rod 5.

[0024] One end of the latch 601 that is inserted into the circular hole on the surface of the adjusting rod 5 is chamfered, so that one end of the latch 601 can be quickly inserted into the circular hole on the surface of the adjusting rod 5 and fixed in position.

[0025] A stopper 7 is fixed on the surface of the reeling rod 2. The stopper 7 is arranged on both sides of the projection screen 201 on the surface of the reeling rod 2, so that both ends of the projection screen 201 remain neat when the projection screen 201 is reeled.

[0026] In summary, the working principle of the utility model is as follows: when in use, the servo motor 204 is powered on to drive the reeling rod 2 to rotate, and then the reeling rod 2 drives the projection screen 201 to reel up, and at the same time drives the driving gear 203 to rotate, and then the driven gear 302 meshing with the driving gear 203 is driven to rotate, and then the driven gear 302 drives the rotating rod 3 to rotate, so that the rotating rod 3 can roll and rub the surface of the projection screen 201, so that the dust accumulated on the surface of the projection screen 201 falls off. Then, the vacuum cleaner 4 is powered on to generate suction, and then the dust hood 401 can suck away the dust that has been cleaned and fallen off the projection screen 201 inside the load-bearing rod 1. Secondly, by pulling the latch 601, the pulling block 604 pulls one end of the latch 601 out of the round hole on the surface of the adjusting rod 5, thereby releasing the limiting effect on the adjusting rod 5, so that the adjusting rod 5 can be raised and lowered inside the supporting rod 501, and then the projection screen 201 is driven to adjust to a suitable height position, thereby improving the viewing comfort of the viewer.

[0027] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A projection display device, comprising a load-bearing rod (1), characterized in that: A reeling rod (2) is rotatably arranged inside the load-bearing rod (1), a projection screen (201) is wound around the surface of the reeling rod (2), a cloth-supporting rod (202) is installed at the bottom end of the projection screen (201), a driving gear (203) is fixed on the surface of the reeling rod (2), a servo motor (204) is mounted on the side of the load-bearing rod (1), an output end of the servo motor (204) is fixedly connected to one end of the reeling rod (2), a rotating rod (3) is rotatably arranged inside the load-bearing rod (1), a cleaning roller (301) is fixed on the surface of the rotating rod (3) A driven gear (302) is fixed on the surface of the rotating rod (3), and the driven gear (302) is meshed with the driving gear (203). A top plate (303) is installed inside the load-bearing rod (1), and the cleaning roller (301) is inserted between the cleaning roller (301) and the top plate (303). An adjusting rod (5) is fixed to the bottom end of the load-bearing rod (1), and a supporting rod (501) is sleeved on the surface of the adjusting rod (5). A fixing block (6) is fixed on the surface of the supporting rod (501), and a buckle assembly is arranged inside the fixing block (6).

2. A projection display device according to claim 1, characterized in that: The radial diameter of the driving gear (203) is greater than the radial diameter of the driven gear (302).

3. A projection display device according to claim 1, characterized in that: A vacuum cleaner (4) is installed at the top of the load-bearing rod (1); the vacuum pipes at both ends of the vacuum cleaner (4) are connected to a vacuum hood (401); the vacuum hood (401) is arranged at the top of the load-bearing rod (1); and the vacuum hood (401) is in communication with the interior of the load-bearing rod (1).

4. A projection display device according to claim 1, characterized in that: The buckle assembly comprises a latch (601) arranged inside the fixing block (6), a blocking piece (602) is fixed on the surface of the latch (601), a spring (603) is sleeved on the surface of the blocking piece (602), two ends of the spring (603) respectively abut against the surface of the blocking piece (602) and the inner wall of the fixing block (6), a pulling block (604) is fixed to one end of the latch (601) outside the fixing block (6), a circular hole is opened on the surface of the adjusting rod (5), and one end of the latch (601) is inserted into the circular hole on the surface of the adjusting rod (5).

5. A projection display device according to claim 4, characterized in that: One end of the latch pin (601) inserted into the circular hole on the surface of the adjusting rod (5) is chamfered.

6. A projection display device according to claim 1, characterized in that: A stopper (7) is fixed on the surface of the reeling rod (2), and the stopper (7) is arranged on both sides of the projection screen (201) on the surface of the reeling rod (2).

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