A display device for science and technology information propaganda
Patent Information
- Application Number
- CN202522550449.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-01
AI Technical Summary
Existing LED display screens used for science and technology information promotion have low heat dissipation efficiency during long-term use, and the dustproof mesh is prone to clogging, resulting in poor heat dissipation and high maintenance costs.
A heat dissipation box with a ring-shaped dustproof net and a self-cleaning mechanism was designed. The ring-shaped dustproof net is rotated by airflow to achieve self-cleaning. Combined with the opening and closing plate, the working mode is automatically switched, and the heat dissipation path is adjusted according to pressure changes to avoid dust blockage.
It achieves efficient heat dissipation, reduces maintenance costs and operational complexity, and enhances the intelligence and practicality of the device.
Smart Images
Figure CN224935968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of information dissemination technology, and in particular to a display device for disseminating scientific and technological information. Background Technology
[0002] In the field of science and technology information dissemination, LED display screens are widely used in exhibitions, science museums, and commercial complexes due to their advantages such as clear display, good visual effects, and convenient information updates. However, existing LED display devices for science and technology information dissemination still have the following problems that urgently need to be solved after long-term use: LED display screens generate a lot of heat during continuous operation. If this heat cannot be dissipated in time, the internal temperature of the screen will rise, which will not only reduce the luminous efficiency of the LED beads and shorten their lifespan, but may also cause screen flickering, color distortion and other malfunctions, affecting the normal display of scientific and technological information. On the other hand, the heat dissipation structure of existing display devices mostly relies on fixed fans and heat dissipation holes. To prevent dust from entering the device through the heat dissipation holes and adhering to the heat dissipation components, such as heat dissipation fins, dust filters are usually installed. However, dust filters are easily blocked by dust after long-term use, resulting in poor heat dissipation channels and further reducing the heat dissipation effect. Moreover, cleaning the dust filters manually requires disassembling the device, which is cumbersome and has high maintenance costs. Therefore, a scientific and technological information promotion display device is proposed to solve the above problems. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a display device for promoting scientific and technological information, which aims to improve the problem of low heat dissipation efficiency mentioned above.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a display device for promoting scientific and technological information, including an LED display screen, wherein a heat dissipation mechanism is provided on the back of the LED display screen; The heat dissipation mechanism includes a heat dissipation box, which is fixedly connected to the back of the LED display screen. An air inlet hood is fixedly connected to the top of the heat dissipation box, and an air outlet hood is fixedly connected to the bottom of the heat dissipation box. A fan is fixedly connected inside the heat dissipation box at the position of the air inlet hood. A partition is fixedly connected to the inner wall of the heat dissipation box, which divides the heat dissipation box into two areas. The area near the LED display screen is the heat dissipation chamber, and the other area is the drive chamber. Ventilation vents are opened at the top and bottom of the partition. The inner wall of the heat dissipation box is fixedly connected to heat dissipation fins at the position of the heat dissipation chamber, and the heat dissipation fins are embedded inside the LED display screen. The inner wall of the heat dissipation box is rotatably connected to an annular dustproof net, and the annular dustproof net surrounds the outside of the heat dissipation fins. A disc is fixedly connected to the annular dustproof net, and several air-absorbing plates are fixedly connected to the disc, and the several air-absorbing plates are distributed in a ring array.
[0005] As a further description of the above technical solution: a cleaning roller is rotatably connected to the inner wall of the heat sink, the cleaning roller is in contact with the surface of the annular dustproof net, a first toothed ring is sleeved and connected to the outer wall of the annular dustproof net, the first toothed ring is meshed with a first gear, and the first gear is rotatably connected to the inner wall of the heat sink, a second toothed ring is rotatably connected to the surface of the first gear, the second toothed ring is meshed with a second gear, and the second gear is coaxially and fixedly connected to the cleaning roller.
[0006] As a further description of the above technical solution: the annular dustproof net, the first toothed ring, the first gear, the second toothed ring, the second gear, and the cleaning roller are all located inside the heat dissipation chamber of the heat dissipation box.
[0007] As a further description of the above technical solution: the opening of the air inlet hood is located at the bottom, and an intercepting rod is fixedly connected to the opening of the air inlet hood.
[0008] As a further description of the above technical solution: the structure of the air outlet hood is the same as that of the air inlet hood.
[0009] As a further description of the above technical solution: the inner wall of the heat sink is hinged with a hinged plate, which is located below the fan.
[0010] As a further description of the above technical solution: both the opening and closing plate and the air vent plate are located inside the drive compartment of the heat dissipation box.
[0011] As a further description of the above technical solution: connecting rods are respectively hinged to both sides of the opening and closing plate, and sliders are respectively hinged to the ends of the two connecting rods away from the opening and closing plate. Slide grooves are respectively opened on both sides of the inner wall of the heat dissipation box for the slider to slide, and a spring is fixedly connected between the slider and the inner wall of the slide groove.
[0012] This utility model has the following beneficial effects: I. In this utility model, an annular dustproof net is set inside the heat dissipation chamber to surround the heat dissipation fins. This net can intercept dust in the air and prevent dust from adhering to the surface of the heat dissipation fins and affecting the heat dissipation effect. Furthermore, the potential energy of air flow drives the annular dustproof net to rotate, causing the windward and leeward sides of the annular dustproof net to continuously switch. When the airflow passes through the leeward side, the outward blowing direction can clear the filter holes of the dustproof net. Moreover, the rotation of the annular dustproof net can drive the cleaning roller to rotate synchronously, and perform rolling cleaning on the surface of the dustproof net. This design achieves the self-cleaning purpose of the annular dustproof net, eliminating the need for frequent manual disassembly and cleaning, and greatly reducing maintenance costs and operational complexity.
[0013] II. In this utility model, under normal conditions, the opening and closing plate remains closed under the action of spring tension, dividing the drive chamber into an independent area. Airflow directly enters the heat dissipation chamber through the ventilation port of the partition, ensuring normal heat dissipation efficiency and avoiding wear on the connecting parts caused by the continuously rotating annular dustproof net. When the annular dustproof net is blocked by dust, causing the airflow resistance in the heat dissipation chamber to increase and the pressure to rise, the pressure will overcome the spring tension and open the opening and closing plate, allowing airflow to enter the drive chamber and flow through the baffle plate, driving the annular dustproof net to rotate and triggering the cleaning structure. The working mode can be automatically switched according to the pressure change inside the heat dissipation box, and the cleaning function can be activated in time when the dustproof net is blocked, without the need for additional power control, thus improving the intelligence and practicality of the device. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of the overall appearance of this utility model; Figure 2 This is a schematic diagram of the heat dissipation box in this utility model; Figure 3 This is a partial cross-sectional view of the heat dissipation box in this utility model; Figure 4 This is a schematic diagram of the heat dissipation chamber area in the heat dissipation box of this utility model; Figure 5 In this utility model Figure 4 Enlarged view of A in the middle; Figure 6 This is a schematic diagram of the structure of the heat dissipation fins and the annular dustproof mesh in this utility model; Figure 7 This is a schematic diagram of the drive compartment area in the heat sink of this utility model; Figure 8 In this utility model Figure 7 A magnified view of B in the middle.
[0015] Legend: 1. LED display screen; 2. Heat sink; 3. Air inlet cover; 4. Air outlet cover; 5. Partition; 51. Ventilation opening; 6. Disc; 61. Air baffle; 62. Opening plate; 621. Slide; 622. Slider; 623. Connecting rod; 624. Spring; 7. Heat dissipation fins; 71. Annular dustproof net; 72. First gear ring; 73. First gear; 74. Second gear ring; 75. Second gear; 76. Cleaning roller; 8. Fan. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Reference Figure 1 , Figure 2 , Figure 6 This utility model provides an embodiment of a technology information promotion display device, including an LED display screen 1. A heat dissipation mechanism is provided on the back of the LED display screen 1, including a heat dissipation box 2. The heat dissipation box 2 is fixedly connected to the back of the LED display screen 1. An air inlet shroud 3 is fixedly connected to the top of the heat dissipation box 2, and an air outlet shroud 4 is fixedly connected to the bottom of the heat dissipation box 2. A fan 8 is fixedly connected inside the heat dissipation box 2 at the position of the air inlet shroud 3. A partition 5 is fixedly connected to the inner wall of the heat dissipation box 2, dividing the heat dissipation box 2 into two areas: the area near the LED display screen 1 is the heat dissipation chamber, and the other area is the drive chamber. Ventilation openings 51 are respectively provided at the top and bottom of the partition 5. After the fan 8 is started, cold air outside the heat dissipation box 2 enters the heat dissipation box 2 through the air inlet shroud 3 for heat dissipation and is discharged at the air outlet shroud 4. A fan 8 is fixedly connected to the inner wall of the heat dissipation box 2 at the position of the heat dissipation chamber. Heat dissipation fins 7 are embedded inside the LED display screen 1 to improve the heat dissipation effect of the LED display screen 1. A ring-shaped dustproof net 71 is rotatably connected to the inner wall of the heat dissipation box 2 and surrounds the outside of the heat dissipation fins 7. It can intercept dust in the air and prevent dust from adhering to the heat dissipation fins 7 and affecting the heat dissipation effect. A disc 6 is fixedly connected to the ring-shaped dustproof net 71, and several baffles 61 are fixedly connected to the disc 6. The baffles 61 are arranged in a ring array. When the airflow inside the heat dissipation box 2 passes through the baffles 61, the airflow potential energy will drive the disc 6 connected to the baffles 61 to rotate, and drive the ring-shaped dustproof net 71 below the disc 6 to rotate. During the rotation, the windward and leeward sides of the ring-shaped dustproof net 71 will continuously switch. When the airflow passes through the leeward side of the ring-shaped dustproof net 71, the airflow blown from the inside to the outside can clear the filter holes on the leeward side of the ring-shaped dustproof net 71.
[0018] Reference Figure 4 , Figure 5A cleaning roller 76 is rotatably connected to the inner wall of the heat sink 2. The cleaning roller 76 contacts the surface of the annular dustproof net 71. A first toothed ring 72 is sleeved on the outer wall of the annular dustproof net 71. The first toothed ring 72 is meshed with a first gear 73, and the first gear 73 is rotatably connected to the inner wall of the heat sink 2. A second toothed ring 74 is rotatably connected to the surface of the first gear 73. The second toothed ring 74 is meshed with a second gear 75, and the second gear 75 is coaxially fixedly connected to the cleaning roller 76. By setting the first toothed ring 72 on the annular dustproof net 71... When the annular dustproof net 71 rotates, it will drive the first toothed ring 72 to rotate together. When the first toothed ring 72 rotates, it will drive the second toothed ring 74 connected to the first gear 73 to rotate through the meshing first gear 73. And through the second gear 75 meshing with the second toothed ring 74, it will drive the cleaning roller 76 to rotate. When the cleaning roller 76 rotates, it will clean the annular dustproof net 71. The annular dustproof net 71, the first toothed ring 72, the first gear 73, the second toothed ring 74, the second gear 75, and the cleaning roller 76 are all located inside the heat dissipation chamber of the heat dissipation box 2.
[0019] Reference Figure 3 The opening of the air inlet hood 3 is located at the bottom, which can prevent rain. An intercepting rod is fixedly connected to the opening of the air inlet hood 3 to intercept foreign objects. The structure of the air outlet hood 4 is the same as that of the air inlet hood 3.
[0020] Reference Figure 3 , Figure 7 , Figure 8 The inner wall of the heat sink 2 is hinged with a hinged plate 62, which is located below the fan 8. Both the hinged plate 62 and the baffle plate 61 are located inside the drive compartment of the heat sink 2. In its normal state, the hinged plate 62 divides the drive compartment of the heat sink 2 into two independent areas. Air entering through the air intake shroud 3 does not pass through the baffle plate 61 inside the drive compartment but directly enters the heat sink through the vent 51. Connecting rods 623 are hinged to both sides of the hinged plate 62, and sliders 622 are hinged to the ends of the two connecting rods 623 furthest from the hinged plate 62. The inner wall has grooves 621 on both sides for sliding the slider 622. A spring 624 is fixedly connected between the slider 622 and the inner wall of the groove 621. When the annular dustproof net 71 is blocked, the air flow path of the annular dustproof net 71 descends, and the pressure inside the heat sink 2 rises. The pressure overcomes the tension of the spring 624 and pushes the opening plate 62 open, allowing air to enter the area where the baffle plate 61 is located. The potential energy of the air flow drives the disc 6 connected to the baffle plate 61 to rotate, so as to achieve the purpose of automatic cleaning according to the pressure change of the heat sink 2.
[0021] Working Principle: Conventional Heat Dissipation Process: When the LED display screen 1 generates heat during operation, the fan 8 at the top air intake shroud 3 of the heat dissipation box 2 is activated; the fan 8 generates negative pressure, drawing cold air from outside the heat dissipation box 2 into the drive chamber through the air intake shroud 3; at this time, the opening and closing plate 62 remains closed under the tension of the springs 624 on both sides, preventing the cold air in the drive chamber from entering the area where the baffle plate 61 is located, but instead entering the heat dissipation chamber through the ventilation opening 51 at the top of the partition plate 5; when the cold air flows through the annular dustproof net 71 surrounding the heat dissipation fins 7, the dust is intercepted by the dustproof net, and the cleaned cold air comes into full contact with the heat dissipation fins 7 embedded in the LED display screen 1, absorbing the heat from the screen body conducted by the fins; finally, it is discharged from the exhaust shroud 4 at the bottom of the heat dissipation box 2, forming a complete heat dissipation cycle and achieving the cooling of the LED display screen 1. Dustproof mesh self-cleaning process: When the annular dustproof mesh 71 accumulates a large amount of dust after long-term use, causing increased airflow resistance and internal pressure in the heat dissipation chamber, the pressure acts on the surface of the opening and closing plate 62, overcoming the tension of the springs 624 on both sides and pushing the opening and closing plate 62 to rotate around the hinge point; thus connecting the upper and lower areas of the drive chamber; at this time, part of the cold air drawn in by the fan 8 enters the heat dissipation chamber through the vent 51, and the other part enters the area where the baffle plate 61 is located. The airflow impacts the baffle plate 61, generating rotational potential energy, which drives the disc 6 and the annular dustproof mesh 71 fixedly connected to it to rotate around the heat dissipation fins 7; when the annular dustproof mesh 71 rotates, the first toothed ring 72 on its outer wall rotates synchronously, driving the first gear 73 to rotate through meshing, and the second... The second toothed ring 74 on the surface of the gear 73 rotates with it, and drives the cleaning roller 76 to rotate through the meshing second gear 75; the cleaning roller 76 is in close contact with the surface of the annular dustproof net 71, and wipes and cleans the dust on the surface of the dustproof net during the rotation; at the same time, the rotating annular dustproof net 71 causes the windward side of the annular dustproof net 71 to switch between the windward side and the leeward side. The filter holes of the annular dustproof net 71 on the leeward side can be cleared by the airflow blowing from the inside to the outside, which can further improve the air permeability of the dustproof net; when the annular dustproof net 71 is cleaned, the air flow resistance in the heat dissipation chamber decreases and the pressure drops. The opening and closing plate 62 closes again under the return tension of the spring 624, and the device returns to the normal heat dissipation mode.
[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A display device for promoting scientific and technological information, comprising an LED display screen (1), characterized in that, The LED display screen (1) is provided with a heat dissipation mechanism on its back; The heat dissipation mechanism includes a heat dissipation box (2), which is fixedly connected to the back of the LED display screen (1). An air inlet cover (3) is fixedly connected to the top of the heat dissipation box (2), and an air outlet cover (4) is fixedly connected to the bottom of the heat dissipation box (2). A fan (8) is fixedly connected inside the heat dissipation box (2) at the position of the air inlet cover (3). A partition (5) is fixedly connected to the inner wall of the heat dissipation box (2). The partition (5) divides the heat dissipation box (2) into two areas. The area near the LED display screen (1) is the heat dissipation chamber, and the other area is the drive chamber. Ventilation openings (51) are respectively opened at the top and bottom of the partition (5). The inner wall of the heat sink (2) is fixedly connected to a heat dissipation fin (7) at the position of the heat dissipation chamber, and the heat dissipation fin (7) is embedded in the interior of the LED display screen (1). The inner wall of the heat sink (2) is rotatably connected to an annular dustproof net (71), and the annular dustproof net (71) surrounds the outside of the heat dissipation fin (7). A disc (6) is fixedly connected to the annular dustproof net (71), and several wind-absorbing plates (61) are fixedly connected to the disc (6), and the several wind-absorbing plates (61) are distributed in a ring array.
2. The display device for promoting scientific and technological information according to claim 1, characterized in that: A cleaning roller (76) is rotatably connected to the inner wall of the heat sink (2). The cleaning roller (76) is in contact with the surface of the annular dustproof net (71). A first toothed ring (72) is sleeved and connected to the outer wall of the annular dustproof net (71). The first toothed ring (72) is meshed with a first gear (73), and the first gear (73) is rotatably connected to the inner wall of the heat sink (2). A second toothed ring (74) is rotatably connected to the surface of the first gear (73). The second toothed ring (74) is meshed with a second gear (75), and the second gear (75) is coaxially fixedly connected to the cleaning roller (76).
3. The display device for promoting scientific and technological information according to claim 2, characterized in that: The annular dustproof net (71), the first toothed ring (72), the first gear (73), the second toothed ring (74), the second gear (75), and the cleaning roller (76) are all located inside the heat dissipation chamber of the heat dissipation box (2).
4. The display device for promoting scientific and technological information according to claim 1, characterized in that: The opening of the air inlet hood (3) is located at the bottom, and an intercepting rod is fixedly connected to the opening of the air inlet hood (3).
5. A display device for promoting scientific and technological information according to claim 4, characterized in that: The structure of the air outlet hood (4) is the same as that of the air inlet hood (3).
6. A display device for promoting scientific and technological information according to claim 1, characterized in that: The inner wall of the heat sink (2) is hinged with a hinge plate (62), which is located below the fan (8).
7. A display device for promoting scientific and technological information according to claim 6, characterized in that: The opening and closing plate (62) and the vent plate (61) are both located inside the drive compartment of the heat sink (2).
8. A display device for promoting scientific and technological information according to claim 6, characterized in that: Connecting rods (623) are hinged to both sides of the opening and closing plate (62), and sliders (622) are hinged to the ends of the two connecting rods (623) away from the opening and closing plate (62). Slide grooves (621) are provided on both sides of the inner wall of the heat dissipation box (2) for the sliders (622) to slide. A spring (624) is fixedly connected between the slider (622) and the inner wall of the slide groove (621).