Intelligent multimedia equipment for visual communication design

Abstract

The invention relates to the technical field of holographic projection equipment, in particular to intelligent multimedia equipment for visual communication design, which comprises a projection unit and a lifting unit, and is characterized in that a holographic projector is arranged in a box body, holographic projection glass is fixedly connected to the lower part of a top plate, and a cross rod is rotatably connected to the inner wall of the box body; and push rods movably penetrate through the swing rods in a penetrating mode, and the ends, away from the swing rods, of the push rods are hinged to the lower surfaces of the side plates. Compared with the prior art, the lifting unit is arranged, a motor is used for driving a worm to drive a worm gear to rotate for transmission, swing rods at the two ends of a cross rod can swing upwards along with rotation of the cross rod, under the action of a guide rod, a push rod can be pushed to slide and push a side plate upwards, and the purpose of driving the holographic projector to ascend automatically is achieved; and in the ascending process, the side plates on the two sides of the holographic projector are pushed by the four push rods, so that the ascending stability is ensured, and the convenience of the holographic projection equipment in the use process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of holographic projection devices, and in particular to an intelligent multimedia device for visual communication design. Background Art

[0002] Holographic projection is a type of 3D technology, which refers to the technology of recording and reproducing the real three-dimensional image of an object using the interference principle. Holographic projection devices belong to intelligent multimedia devices. In the application of visual communication design, holographic projection devices are needed to project products, so as to understand the products more comprehensively and specifically.

[0003] In the prior art, a holographic projection device is proposed in a Chinese patent document with the publication number CN114740682B, a portable 3D holographic projection device, which includes a protective shell. A 3D holographic projector is arranged inside the protective shell, and a cross beam is fixed at the bottom of the protective shell. A first traveling wheel and a second traveling wheel are respectively installed at the left end and the right end of the cross beam. The first traveling wheel is rotationally connected to one end of a connecting column, and the other end of the connecting column is slidably connected to the cross beam. A driving plate is rotatably installed on the part of the cross beam on the right side of the first traveling wheel. By setting the driving plate, it can be rotated by the rightward movement when the first traveling wheel collides with a stone, and when the driving plate rotates, it can push a push-away plate to rotate through a pushing bar. The push-away plate will push the stone on the left side of the first traveling wheel away from the first traveling wheel, thereby avoiding the stone from affecting the traveling speed of the entire device, and at the same time, it can avoid the internal electronic components from being damaged due to the sudden drop in the speed of the device. However, when this solution is actually used, there are still the following deficiencies:

[0004] Portable holographic projection devices usually place the main body in a storage box, and a cover plate is provided on the top of the box to cover the storage box. When in use, the cover plate needs to be opened first, and then the device needs to be manually taken out of the box. The operation is quite inconvenient. Moreover, during the manual taking and placing process, the staff cannot ensure that their arms can always be in a balanced and stable state, resulting in poor stability of the holographic projection device during the taking process. It is very easy to touch the inner wall of the storage box, and there is a risk of damaging the device. Therefore, the present application provides an intelligent multimedia device for visual communication design to meet the need of realizing the automatic lifting of the holographic projection device and ensuring the stability during the lifting process. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an intelligent multimedia device for visual communication design to solve the problem of poor stability of the holographic projection device during the taking process.

[0006] Based on the above purpose, the present invention provides an intelligent multimedia device for visual communication design, including a projection unit and a lifting unit;

[0007] Among them, the projection unit includes a box body, inside which there is a holographic projector. At the four corners around the top of the holographic projector, there are longitudinal beams fixedly connected. At the top ends of the longitudinal beams, there is a top plate fixedly connected. At the lower part of the top plate, there is a holographic projection glass fixedly connected.

[0008] Among them, the lifting unit includes side plates fixedly connected to the sides of the holographic projector. At the bottom of the box body, there is a motor fixedly connected. At the driving end of the motor, there is a worm fixedly connected. Inside the inner wall of the box body, there is a cross bar rotatably connected. At both ends of the cross bar, there are swing rods fixedly sleeved. Inside the swing rods, there is a push rod movably inserted. One end of the push rod away from the swing rod is hinged to the lower surface of the side plate.

[0009] Among them, on the side inner wall of the box body, there is an anti-falling component arranged, and on the bottom inner wall of the box body, there is an emergency braking component arranged.

[0010] Among them, inside the top plate, there is a shielding unit arranged.

[0011] Preferably, in the middle of the outer surface of the cross bar, there is a worm gear fixedly sleeved. The worm gear is meshed and connected with the worm. Inside the side of the swing rod, there is a guide rod movably inserted. The guide rod is movably connected with the end of the push rod extending into the swing rod. The end of the guide rod away from the push rod is rotatably connected to the inner wall of the box body.

[0012] Preferably, the anti-falling component includes a short rod fixedly connected in the groove on the side of the side plate. Inside the side inner wall of the box body, there is a cavity opened. Inside the inner wall of the cavity, there is a shaft rod rotatably connected. In the middle of the outer surface of the shaft rod, there is a cross hook fixedly sleeved. The cross hook is placed directly below the short rod. On the outer surface of the shaft rod, there is a torsion spring sleeved. One end of the torsion spring is fixedly connected to the outer surface of the shaft rod, and the other end is fixedly connected to the inner wall of the cavity. On the inner wall of the cavity, there is a limiting rod fixedly connected. On the outer surface of the limiting rod, there is a seesaw movably sleeved. The end of the seesaw extending into the cavity is hinged to the end of the cross hook.

[0013] Preferably, the emergency braking component includes a base fixedly connected to the bottom inner wall of the box body. On the outer surface of the base, there is a round rod movably inserted. One end of the round rod close to the cross bar is fixedly connected with an arc-shaped plate. The end of the round rod away from the arc-shaped plate is fixedly connected with a cross-shaped plate. On the side of the cross-shaped plate, there is an extension block fixedly connected. On the lower surface of the extension block, there is a pendulum ball fixedly connected. On the outer surface of the round rod, there is a spring sleeved. On the inner wall of the arc-shaped plate, there is a friction strip fixedly connected.

[0014] Preferably, on the side of the guide rod, there is a trigger rod fixedly connected. The trigger rod is aligned with the middle of the cross-shaped plate.

[0015] Preferably, the shielding unit includes a central rod, a strip plate, a folding light-shielding plate, an extension assembly disposed inside the top plate, and a supplementary assembly acting on the extension assembly. The central rod is rotatably connected to the inner wall of the top plate. The strip plate is fixedly sleeved on the outer surface of the central rod. The folding light-shielding plate is disposed on the side of the strip plate. One side of the folding light-shielding plate away from the strip plate is hinged to the inner wall of the top plate.

[0016] Preferably, the extension assembly includes a driving rod movably penetrating through the side of the longitudinal beam. One end of the driving rod extending out of the longitudinal beam is fixedly connected to a first gear. The inner wall of the box body is fixedly connected to a rack. The first gear is meshed with the rack. One end of the driving rod extending deep into the longitudinal beam is fixedly connected to a driving wheel. A transmission rod movably penetrates through the inside of the longitudinal beam. The bottom end of the transmission rod is fixedly connected to a driven wheel. The driven wheel is meshed with the driving wheel.

[0017] Preferably, the top end of the transmission rod penetrates through the bottom of the top plate and extends deep into the top plate. The top end of the transmission rod is fixedly connected to a transmission wheel. A second gear is fixedly sleeved on the outer surface of the central rod. The second gear is meshed with the transmission wheel.

[0018] Preferably, the supplementary assembly includes a straight rod slidably connected to the inner wall of the top plate. One end of the straight rod is fixedly connected to a hollow rod. Inner rods are slidably inserted through both ends of the hollow rod. One end of the inner rod extending out of the hollow rod is fixedly connected to a sliding seat. A single-end slider is slidably connected to the upper part of the sliding seat. The top end of the single-end slider is hinged to the end of the strip plate.

[0019] Preferably, a double-end slider is slidably connected to the middle of the straight rod. Diagonal tension rods are hinged to both ends of the double-end slider. One end of the diagonal tension rod away from the double-end slider is hinged to the side of the single-end slider. An elastic light-shielding cloth is fixedly connected to the side of the diagonal tension rod. The side of the elastic light-shielding cloth is fixedly connected to the outer surfaces of the sliding seat and the straight rod.

[0020] Advantages of the present invention:

[0021] 1. For this intelligent multimedia device for visual communication design, by setting up a lifting unit, the motor is used to drive the worm to drive the worm wheel to rotate for transmission. The swing rods at both ends of the cross bar will swing upward as the cross bar rotates. Under the action of the guiding rod, it will push the push rod to slide and push the side plate upward, achieving the purpose of automatically driving the holographic projector to rise. During the rising process, the side plates on both sides of the holographic projector are pushed by four push rods, ensuring the stability of the rise and improving the convenience during the use of the holographic projection device.

[0022] 2. This kind of intelligent multimedia device used for visual communication design is provided with an anti-falling component. During the rising process of the holographic projector, the horizontal hook is squeezed and flipped and placed at the bottom of the short rod, so that the short rod can be supported. When the holographic projector suddenly falls, the emergency braking component is provided. When the holographic projector falls due to a fault during the lifting process, the inertia generated by the collision of the trigger rod with the cross rod drives the pendulum ball to swing, thereby pushing the arc plate to be clamped on the outer surface of the cross rod, causing the cross rod to decelerate and stop rotating under the action of friction, thereby avoiding damage caused by the direct fall of the holographic projector and improving the safety performance of the device.

[0023] 3. This kind of intelligent multimedia equipment for visual communication design is provided with an extension component and a supplementary component. During the rising process of the holographic projector, the meshing of gear 1 and the rack triggers the rotation of the active rod, which drives the strip plate to rotate under the transmission of the transmission structure, thereby pulling the folding shading plate to unfold and block the external light. At the same time, the strip plate drives the hollow rod to move, thereby stretching the elastic shading cloth under the action of the inclined rod to ensure that the shading range can cover the four sides of the top plate, thereby improving the clarity of the image displayed by the holographic projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the cutaway structure of the box body of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the lifting unit of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the anti-falling component of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the emergency brake assembly of the present invention;

[0030] Figure 6 This is a schematic diagram of the matching structure of the holographic projector and the box body of the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the longitudinal beam of the present invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the top plate of the present invention;

[0033] Figure 9 This is a schematic structural diagram of the stretching component of the present invention;

[0034] Figure 10 This is a schematic structural diagram of the supplementary component of the present invention.

[0035] The markings in the figure are:

[0036] 11. Box body; 12. Holographic projector; 13. Longitudinal beam; 14. Top plate; 15. Holographic projection glass; 21. Side plate; 22. Motor; 23. Worm; 24. Cross bar; 25. Worm gear; 26. Swing rod; 27. Push rod; 28. Guide rod; 31. Short rod; 32. Shaft rod; 33. Horizontal hook; 34. Torsion spring; 35. Limit rod; 36. Seesaw; 41. Base; 42. Round rod; 43. Arc plate; 44. Friction strip; 45. Cross plate; 46. Extension block; 47. Swing ball; 48. Spring; 49. Trigger rod; 51. Central rod; 52. Strip plate; 53. Folding light-shielding plate; 61. Driving rod; 62. Gear 1; 63. Rack; 64. Transmission rod; 65. Driving wheel; 66. Driven wheel; 67. Transmission wheel; 68. Gear 2; 71. Hollow rod; 72. Straight rod; 73. Inner rod; 74. Slide base; 75. Single-end slider; 76. Oblique pull rod; 77. Double-end slider; 78. Elastic light-shielding cloth. Detailed implementation manners

[0037] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0038] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] As Figures 1 to 10 shown, an intelligent multimedia device for visual communication design includes a projection unit and a lifting unit;

[0040] The projection unit includes a box body 11, inside which there is a holographic projector 12. At the four corners around the top of the holographic projector 12, there are vertical beams 13 fixedly connected. At the top end of the vertical beams 13, there is a top plate 14 fixedly connected. At the lower part of the top plate 14, there is a holographic projection glass 15 fixedly connected.

[0041] After the holographic projector 12 rises to a specified height, the holographic projection glass 15 is also completely exposed. At this time, after the holographic projector 12 is powered on, it can display the set object inside the holographic projection glass 15 for visitors to watch.

[0042] As Figure 2 and Figure 3 shown, the lifting unit includes a side plate 21 fixedly connected to the side of the holographic projector 12. At the bottom of the box body 11, there is a motor 22 fixedly connected. The driving end of the motor 22 is fixedly connected with a worm 23. The inner wall of the box body 11 is rotatably connected with a cross bar 24. At both ends of the cross bar 24, there are swing rods 26 fixedly sleeved. Inside the swing rod 26, there is a push rod 27 movably inserted. One end of the push rod 27 away from the swing rod 26 is hinged to the lower surface of the side plate 21. In the middle of the outer surface of the cross bar 24, there is a worm gear 25 fixedly sleeved. The worm gear 25 is meshed and connected with the worm 23. A guide rod 28 is movably inserted into the side of the swing rod 26. The guide rod 28 is movably connected with one end of the push rod 27 extending into the swing rod 26. The end of the guide rod 28 away from the push rod 27 is rotatably connected to the inner wall of the box body 11.

[0043] The motor 22 drives the worm 23 and the worm gear 25 to rotate and drives the cross bar 24 to rotate. The swing rods 26 at both ends of the cross bar 24 will swing upward as the cross bar 24 rotates. During the rotation of the swing rod 26, the guide rod 28 will rotate upward, and then will push the push rod 27 to slide and push the side plate 21 upward, achieving the purpose of driving the holographic projector 12 to rise automatically. During the rising process, the side plates 21 on both sides of the holographic projector 12 are pushed by four push rods 27, ensuring the stability of the rise and avoiding the situation of reverse rotation during the lifting process, improving the convenience during the use of the holographic projection device.

[0044] As Figure 2 、 Figure 3 and Figure 4 shown, the anti-falling component includes a short rod 31 fixedly connected to the groove on the side of the side plate 21. There is a cavity opened on the side inner wall of the box body 11. The inner wall of the cavity is rotatably connected with a shaft rod 32. In the middle of the outer surface of the shaft rod 32, there is a cross hook 33 fixedly sleeved. The cross hook 33 is placed directly below the short rod 31. A torsion spring 34 is sleeved on the outer surface of the shaft rod 32. One end of the torsion spring 34 is fixedly connected to the outer surface of the shaft rod 32, and the other end is fixedly connected to the inner wall of the cavity. A limiting rod 35 is fixedly connected to the inner wall of the cavity. A seesaw 36 is movably sleeved on the outer surface of the limiting rod 35. One end of the seesaw 36 extending into the cavity is hinged to the end of the cross hook 33.

[0045] During the rising process of the holographic projector 12, the short rod 31 will push the horizontal hook 33 to rotate around the shaft 32 when it contacts the horizontal hook 33. After the short rod 31 exceeds the horizontal hook 33, it will slide downward and reset under the action of the rebound force of the torsion spring 34, so that the horizontal hook 33 is placed at the lower part of the short rod 31, which can support the short rod 31 and can support the holographic projector 12 when it falls suddenly.

[0046] like Figure 2 , Figure 3 and Figure 5 As shown, the emergency brake assembly includes a base 41 fixedly connected to the inner wall of the bottom of the box body 11, a round rod 42 is movably inserted into the outer surface of the base 41, an end of the round rod 42 close to the cross bar 24 is fixedly connected to an arc plate 43, an end of the round rod 42 away from the arc plate 43 is fixedly connected to a cross plate 45, an extension block 46 is fixedly connected to the side of the cross plate 45, a swing ball 47 is fixedly connected to the lower surface of the extension block 46, a spring 48 is sleeved on the outer surface of the round rod 42, a friction strip 44 is fixedly connected to the inner wall of the arc plate 43, a trigger rod 49 is fixedly connected to the side of the guide rod 28, and the trigger rod 49 is aligned with the middle of the cross plate 45;

[0047] During the falling process of the holographic projector 12, if a structural failure occurs and causes the holographic projector 12 to fall, the rapid swing of the guide rod 28 will drive the trigger rod 49 to collide with the cross plate 45, and the swing ball 47 will collide with the cross rod first due to inertia, and then will swing rapidly toward the base 41 under the action of the collision force, and the inertia of the swing ball 47 will accelerate the movement of the cross plate 45, and then will push the arc plate 43 to be connected to the outer surface of the cross bar 24, and the friction strip 44 on the inner wall of the arc plate 43 can increase the friction with the cross bar 24, so that the cross bar 24 decelerates and stops rotating under the action of friction, and then the descent speed of the holographic projector 12 can be reduced until it stops, which plays an emergency brake in the event of a sudden fall, avoids damage caused by the direct fall of the holographic projector 12, and improves the safety performance of the device.

[0048] like Figures 6 to 10 As shown, the shielding unit includes a central rod 51, a strip plate 52, a folding shading plate 53, an extension component arranged inside the top plate 14, and a supplementary component acting on the extension component. The central rod 51 is rotatably connected to the inner wall of the top plate 14, the strip plate 52 is fixedly sleeved on the outer surface of the central rod 51, the folding shading plate 53 is arranged on the side of the strip plate 52, and the side of the folding shading plate 53 away from the strip plate 52 is hinged to the inner wall of the top plate 14. The folding shading plate 53 is distributed along the outer surface of the longitudinal beam 13 to ensure that the shading range is maximized.

[0049] The stretching component includes a driving rod 61 that movably penetrates through the side of the longitudinal beam 13. One end of the driving rod 61 extending out of the longitudinal beam 13 is fixedly connected to a first gear 62. The inner wall of the box body 11 is fixedly connected to a rack 63. The first gear 62 is meshed with the rack 63. One end of the driving rod 61 extending deep into the longitudinal beam 13 is fixedly connected to a driving wheel 65. A transmission rod 64 movably penetrates through the inside of the longitudinal beam 13. The bottom end of the transmission rod 64 is fixedly connected to a driven wheel 66. The driven wheel 66 is meshed with the driving wheel 65. The top end of the transmission rod 64 penetrates through the bottom of the top plate 14 and extends deep into the top plate 14. The top end of the transmission rod 64 is fixedly connected to a transmission wheel 67. A second gear 68 is fixedly sleeved on the outer surface of the central rod 51. The second gear 68 is meshed with the transmission wheel 67;

[0050] The supplementary component includes a straight rod 72 slidably connected to the inner wall of the top plate 14. One end of the straight rod 72 is fixedly connected to a hollow rod 71. Inner rods 73 are slidably inserted through both ends of the hollow rod 71. One end of the inner rod 73 extending out of the hollow rod 71 is fixedly connected to a sliding seat 74. A single-end slider 75 is slidably connected to the upper part of the sliding seat 74. The top end of the single-end slider 75 is hinged to the end of the strip-shaped plate 52. A double-end slider 77 is slidably connected to the middle of the straight rod 72. Oblique pull rods 76 are hinged to both ends of the double-end slider 77. One end of the oblique pull rod 76 away from the double-end slider 77 is hinged to the side of the single-end slider 75. An elastic light-shielding cloth 78 is fixedly connected to the side of the oblique pull rod 76. The side of the elastic light-shielding cloth 78 is fixedly connected to the outer surfaces of the sliding seat 74 and the straight rod 72;

[0051] When the holographic projector 12 rises to near the top of the box body 11, the meshing of the first gear 62 and the rack 63 triggers the rotation of the driving rod 61. Driven by the transmission structure, the strip-shaped plate 52 rotates. During the movement of the strip-shaped plate 52, it will pull the folding light-shielding plate 53 to unfold, which can block the external light and reduce the influence of the external light on the holographic projection glass 15. And during the movement, the strip-shaped plate 52 will drive the single-end slider 75 to slide in the sliding seat 74. And during the movement of the single-end slider 75, it will pull the oblique pull rod 76 to move. The other end of the oblique pull rod 76 is limited by the double-end slider 77, ensuring the stability of the oblique pull rod 76 during the movement. The oblique pull rod 76 will stretch the elastic light-shielding cloth 78. The sliding seat 74 and the hollow rod 71 are connected by the inner rod 73. After the single-end slider 75 slides to the end, it will stretch the inner rod 73 to extend out of the hollow rod 71, so as to ensure that the elastic light-shielding cloth 78 can cover the parts that the light-shielding plate cannot cover, ensuring that the light-shielding range can cover the four sides of the top plate 14. In a light-shielded environment, the holographic projector 12 can accurately present the originally set colors, giving the audience a better visual experience.

[0052] When the technical solution provided by the present invention is used and it is necessary to take the holographic projector 12 for visual communication design display, the motor 22 is started to drive the worm 23 to rotate. During the rotation of the worm 23, the two side worm wheels 25 are synchronously driven to rotate in the opposite direction and drive the cross bar 24 to rotate. The swing rods 26 at both ends of the cross bar 24 will swing upward as the cross bar 24 rotates. A push rod 27 slides inside the swing rod 26 and is hinged to the lower part of the side plate 21. One end of the push rod 27 extending into the cross bar 24 is hinged to the guide rod 28. During the rotation of the swing rod 26, the guide rod 28 will rotate upward, and then push the push rod 27 to slide and push the side plate 21 upward, achieving the purpose of automatically raising the holographic projector 12. During the rising process, the two side plates 21 of the holographic projector 12 are pushed by the four push rods 27 to ensure the stability of the rise. At the same time, the structure of the worm wheel 25 and the worm 23 has a self-locking function, which can avoid the reverse rotation during the lifting process and improve the convenience during the use of the holographic projection device. After the holographic projector 12 rises to the specified height, the holographic projection glass 15 is completely exposed from the box body 11. At this time, after the holographic projector 12 is powered on, the set object can be displayed in the holographic projection glass 15 for the visitors to watch;

[0053] During the rising process of the holographic projector 12, the short rod 31 in the middle of the side plate 21 will push the horizontal hook 33 to rotate around the shaft 32 when it contacts the horizontal hook 33, and then squeeze the torsion spring 34. After the short rod 31 exceeds the horizontal hook 33, it will slide downward and reset under the action of the rebound force of the torsion spring 34, so that the horizontal hook 33 is placed at the lower part of the short rod 31, and the short rod 31 can be supported, and the holographic projector 12 can be supported when it suddenly falls. In addition, an active rod 61 extends from the side of the longitudinal beam 13, and a gear 62 is fixed to the end of the active rod 61. When the holographic projector 12 rises to the top near the box body 11, the gear 62 and the rack 6 3 meshes, and then drives the gear 1 62 to rotate and drives the driving wheel 65 to rotate through the active rod 61. The transmission of the driven wheel 66 and the transmission rod 64 can drive the transmission wheel 67 at the top of the transmission rod 64 to rotate. Gears 2 68 are arranged on both sides of the transmission wheel 67. The two gears 2 68 will rotate at the same time under the drive of the transmission wheel 67, and then drive the center rod 51 in the middle of the gear 2 68 to rotate synchronously. The strip plate 52 will rotate to the outside of the top plate 14 with the rotation of the center rod 51 until it abuts against the strip plate 52 on the other side. During the movement of the strip plate 52, the folding sunshade plate 53 will be pulled to unfold, so that the light from the outside can be reflected. The holographic projection glass 15 is shielded to reduce the influence of external light on the holographic projection glass 15, making the bright part of the projection brighter and the dark part darker, thereby significantly improving the brightness contrast of the image. In a light-shielded environment, there is no color interference from external light, and the holographic projector 12 can accurately present the originally set color, and the color is more vivid and realistic, with a higher degree of restoration, so that the audience can get a better visual experience. In the process of the strip plate 52 rotating outward, the hollow rod 71 will be driven to move outward, and under the limit pull of the straight rod 72, it is ensured to be in a straight line motion trajectory, and in the process of movement, the strip plate 52 will drive the single-end slider 75 in the slide seat 74 The single-end slider 75 will slide, and the diagonal rod 76 will be pulled to move during the movement. The other end of the diagonal rod 76 is limited by the double-end slider 77, so that the stability of the diagonal rod 76 is guaranteed during the movement. The diagonal rod 76 will stretch the elastic shading cloth 78. The sliding seat 74 and the hollow rod 71 are connected by the inner rod 73. After the single-end slider 75 slides to the end, the inner rod 73 will be stretched out from the hollow rod 71, thereby ensuring that the elastic shading cloth 78 can cover the parts that the shading plate cannot cover, and ensuring that the shading range can cover the surroundings of the top plate 14, thereby improving the clarity of the image displayed by the holographic projector 12;

[0054] After the display is completed, the motor 22 can be started to rotate in the reverse direction to store the holographic projector 12 in the box body 11. Under the reverse rotation of the driving wheel 65, the strip plate 52 can be driven to rotate into the top plate 14, so that the folding shading plate 53 and other structures can be folded and stored in the top plate 14. When the side plate 21 is close to the horizontal hook 33, the rocker 36 is pressed downward. The other end of the rocker 36 is limited by the limit rod 35 and pushes the horizontal hook 33 to move upward. The horizontal hook 33 rotates around the shaft rod 32 and loses the supporting effect on the short rod 31, so that the short rod 31 can fall vertically, and the push rod 27 will gradually be collected in the swing rod 26. During the falling process of the holographic projector 12, if a structural failure occurs and causes the holographic projector 12 to fall, the rapid swing of the guide rod 28 will drive the trigger rod 49 to collide with the cross plate 45. After the collision, the cross plate 45 will push the round rod 42 to move in the base 41. At the same time, the swing ball 47 is The inertia will first collide with the cross bar, and then under the action of the collision force, it will quickly swing toward the base 41, and use the inertia of the pendulum ball 47 to accelerate the movement of the cross plate 45, which will then push the arc plate 43 to be clamped on the outer surface of the cross bar 24. The friction strip 44 on the inner wall of the arc plate 43 can increase the friction with the cross bar 24, causing the cross bar 24 to decelerate and stop rotating under the action of the friction force, thereby reducing the descending speed of the holographic projector 12 until it stops, which plays an emergency brake in the event of a sudden fall, avoids damage caused by the direct fall of the holographic projector 12, and improves the safety performance of the device. However, when the holographic projector 12 lands smoothly, the trigger rod 49 will slowly push the cross plate 45, and the swing amplitude of the pendulum ball 47 is negligible, so no inertial swing can be generated. Under the action of the spring 48, a gap will be left between the arc plate 43 and the cross bar 24, which will not interfere with the normal operation of the cross bar 24.

[0055] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0056] Therefore, any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent multimedia device for visual communication design, characterized in that: It includes a projection unit and a lifting unit; The projection unit comprises a box (11), a holographic projector (12) is arranged inside the box (11), longitudinal beams (13) are fixedly connected at the corners around the top of the holographic projector (12), a top plate (14) is fixedly connected at the top of the longitudinal beam (13), and a holographic projection glass (15) is fixedly connected at the bottom of the top plate (14); The lifting unit comprises a side plate (21) fixedly connected to the side of the holographic projector (12); a motor (22) is fixedly connected to the bottom of the box (11); a worm (23) is fixedly connected to the driving end of the motor (22); a cross bar (24) is rotatably connected to the inner wall of the box (11); a rocker (26) is fixedly sleeved at both ends of the cross bar (24); a push rod (27) is movably inserted inside the rocker (26); and one end of the push rod (27) away from the rocker (26) is hinged to the lower surface of the side plate (21); Wherein, the side inner wall of the box body (11) is provided with an anti-falling component, and the bottom inner wall of the box body (11) is provided with an emergency brake component; Wherein, a shielding unit is arranged inside the top plate (14).

2. The intelligent multimedia device for visual communication design according to claim 1, characterized in that: A worm wheel (25) is fixedly sleeved on the middle part of the outer surface of the cross bar (24), and the worm wheel (25) is meshingly connected with the worm (23). A guide rod (28) is movably inserted into the side of the swing rod (26), and the guide rod (28) is movably connected to one end of the push rod (27) that penetrates into the swing rod (26). The end of the guide rod (28) that is away from the push rod (27) is rotatably connected to the inner wall of the box body (11).

3. The intelligent multimedia device for visual communication design according to claim 1, characterized in that: The anti-falling component comprises a short rod (31) fixedly connected to a groove on a side edge of the side plate (21); a cavity is formed on the inner wall of the side edge of the box body (11); a shaft rod (32) is rotatably connected to the inner wall of the cavity; a horizontal hook (33) is fixedly sleeved on the middle part of the outer surface of the shaft rod (32); the horizontal hook (33) is placed directly below the short rod (31); a torsion spring (34) is sleeved on the outer surface of the shaft rod (32); one end of the torsion spring (34) is fixedly connected to the outer surface of the shaft rod (32); and the other end is fixedly connected to the inner wall of the cavity; a limiting rod (35) is fixedly connected to the inner wall of the cavity; a seesaw (36) is movably sleeved on the outer surface of the limiting rod (35); one end of the seesaw (36) extending deep into the cavity is hinged to the end of the horizontal hook (33).

4. The intelligent multimedia device for visual communication design according to claim 1, characterized in that: The emergency brake assembly comprises a base (41) fixedly connected to the inner wall of the bottom of the box body (11); a round rod (42) is movably inserted into the outer surface of the base (41); an end of the round rod (42) close to the cross bar (24) is fixedly connected to an arc plate (43); an end of the round rod (42) away from the arc plate (43) is fixedly connected to a cross plate (45); an extension block (46) is fixedly connected to the side of the cross plate (45); a swing ball (47) is fixedly connected to the lower surface of the extension block (46); a spring (48) is sleeved on the outer surface of the round rod (42); and a friction strip (44) is fixedly connected to the inner wall of the arc plate (43).

5. The intelligent multimedia device for visual communication design according to claim 2, characterized in that: A trigger rod (49) is fixedly connected to the side of the guide rod (28), and the trigger rod (49) is aligned with the middle of the cross plate (45).

6. The intelligent multimedia device for visual communication design according to claim 1, characterized in that: The shielding unit comprises a central rod (51), a strip plate (52), a folding shading plate (53), an extension component arranged inside the top plate (14), and a supplementary component acting on the extension component, wherein the central rod (51) is rotatably connected to the inner wall of the top plate (14), the strip plate (52) is fixedly sleeved on the outer surface of the central rod (51), the folding shading plate (53) is arranged on the side of the strip plate (52), and the side of the folding shading plate (53) away from the strip plate (52) is hinged to the inner wall of the top plate (14).

7. The intelligent multimedia device for visual communication design according to claim 6, characterized in that: The extension assembly comprises an active rod (61) movably passing through the side of the longitudinal beam (13); one end of the active rod (61) extending out of the longitudinal beam (13) is fixedly connected to a gear 1 (62); the inner wall of the box body (11) is fixedly connected to a rack (63); the gear 1 (62) is meshingly connected with the rack (63); one end of the active rod (61) extending into the longitudinal beam (13) is fixedly connected to a driving wheel (65); a transmission rod (64) movably passes through the interior of the longitudinal beam (13); the bottom end of the transmission rod (64) is fixedly connected to a driven wheel (66); the driven wheel (66) is meshingly connected with the driving wheel (65).

8. The intelligent multimedia device for visual communication design according to claim 7, characterized in that: The top end of the transmission rod (64) penetrates through the bottom of the top plate (14) and penetrates into the interior of the top plate (14); the top end of the transmission rod (64) is fixedly connected to a transmission wheel (67); a second gear (68) is fixedly sleeved on the outer surface of the center rod (51); and the second gear (68) is meshingly connected to the transmission wheel (67).

9. The intelligent multimedia device for visual communication design according to claim 6, characterized in that: The supplementary component comprises a straight rod (72) slidably connected to the inner wall of the top plate (14); the end of the straight rod (72) is fixedly connected to a hollow rod (71); both ends of the hollow rod (71) are slidably inserted with inner rods (73); one end of the inner rod (73) extending out of the hollow rod (71) is fixedly connected to a sliding seat (74); the upper part of the sliding seat (74) is slidably connected to a single-end slider (75); the top end of the single-end slider (75) is hinged to the end of the strip plate (52).

10. The intelligent multimedia device for visual communication design according to claim 9, characterized in that: The middle part of the straight rod (72) is slidably connected to a double-end slider (77), both ends of the double-end slider (77) are hinged with an inclined rod (76), one end of the inclined rod (76) away from the double-end slider (77) is hinged to the side of the single-end slider (75), the side of the inclined rod (76) is fixedly connected to an elastic blackout cloth (78), and the side of the elastic blackout cloth (78) is fixedly connected to the outer surface of the sliding seat (74) and the straight rod (72).

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