Projector with efficient heat dissipation

Abstract

The invention discloses an efficient heat dissipation projector, and belongs to the technical field of projectors, the efficient heat dissipation projector comprises a shell, a projector main body is fixedly mounted on the inner wall of the shell, and a lens electrically connected with the projector main body is embedded in the side wall of the shell. According to the scheme, the memory alloy wire is arranged, after the projector is used and closed, the temperature of the projector body is gradually reduced, then the temperature of the memory alloy wire is gradually reduced, the memory alloy wire is shrunk, the sealing plate is driven to move downwards in the shrunk process of the memory alloy wire, and the sealing plate is gradually separated from the switch in the downward moving process of the sealing plate; at the moment, the motor is powered off and stops rotating, so that the projector can be continuously cooled after the use of the projector is finished; and meanwhile, the air inlet is gradually blocked in the process that the sealing plate moves downwards, so that external dust is effectively prevented from being attached to the surface of the filter plate when the projector is not used and influencing normal air suction of the shell through the filter screen, and the effect of improving the heat dissipation effect of the projector is achieved.

Description

Technical Field

[0001] This invention relates to the field of projector technology, and more specifically, to a projector with high-efficiency heat dissipation. Background Technology

[0002] A projector, also known as a projector, is a device that projects images or videos onto a screen. It can be connected to computers, VCD players, DVD players, Blu-ray players, game consoles, DV cameras, etc., through various interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools, and entertainment venues. A projector generally consists of a projection imaging system and an optical magnification system. To obtain high-quality, high-definition projected images during the projection process, high brightness output must be ensured. This requires the projector to use a high-power, high-brightness light source. However, after prolonged operation, a high-power light source will inevitably accumulate a large amount of heat inside the projector. If this heat cannot be dissipated quickly enough, the resulting high temperature will greatly affect the projector's working efficiency, and prolonged operation under high temperatures will also significantly shorten the projector's lifespan.

[0003] Chinese Patent No. CN213457627U discloses a projector with efficient heat dissipation function. The projector uses a drive motor to drive a fan to circulate the main body of the device, thereby achieving the effect of heat dissipation. Cooling mechanisms are fixedly installed on both sides of the main body of the device. The flow of coolant in the cooling mechanism absorbs the heat emitted by the main body of the device, thereby achieving the effect of cooling. The fan also blows on the cooling mechanism, so that the coolant in the cooling mechanism always maintains a low temperature and the cooling effect is not reduced.

[0004] Chinese patent CN211826873U discloses a projector with high-efficiency heat dissipation. The heat is conducted to the heat sink assembly through heat dissipation strips. The cooling fan blows the air inside the housing outward, carrying away the heat from the heat sink assembly. Through the heat dissipation strips, the heat from the optical engine components can be quickly dissipated, thereby improving the heat dissipation efficiency and the heat dissipation capacity of the projector.

[0005] While the aforementioned patents can improve heat dissipation to some extent, they all have certain limitations. Most existing heat dissipation devices rely on fan blades for cooling, and most fan blades stop rotating after the projector is turned off. However, the projector temperature remains high at this time, and the projector may be damaged due to overheating after the fan blades stop rotating. Furthermore, the air intake cannot be sealed after the projector cools down, allowing external dust to easily adhere to the inside of the projector or the surface of the filter at the air intake, thus affecting the projector's heat dissipation performance. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a projector with high-efficiency heat dissipation, which can improve the heat dissipation effect of the projector.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A projector with high-efficiency heat dissipation includes a housing, a projector body fixedly mounted on the inner wall of the housing, and a lens electrically connected to the projector body embedded in the side wall of the housing.

[0009] The heat dissipation mechanism includes symmetrically arranged air inlets and exhaust outlets on the housing. A motor is fixedly installed on the inner bottom wall of the housing. A fan blade that mates with the exhaust outlet is fixedly installed on the output end of the motor. A filter screen is embedded in the exhaust outlet. A filter plate that mates with the air inlet is provided on the housing. An installation groove communicating with the air inlet is opened on the housing. A sliding groove is symmetrically opened on the side wall of the installation groove. An elastic pad is fixedly installed on the bottom wall of the sliding groove. A sealing plate is fixedly installed on the top wall of the elastic pad, and the sealing plate slides in fit with the installation groove. A shape memory alloy wire is fixedly installed between the sealing plate and the bottom wall of the sliding groove. A heat conduction rod is fixedly installed between the projector body and the shape memory alloy wire. A switch electrically connected to the motor is fixedly installed on the top wall of the installation groove.

[0010] Furthermore, a heat dissipation pipe is fixedly installed on the top wall of the shell, and a heat dissipation box is fixedly installed on the bottom wall of the shell, with coolant inside the heat dissipation box. A first connecting pipe is fixedly installed on the heat dissipation pipe, and a horizontal pipe is fixedly installed at the end of the first connecting pipe away from the heat dissipation pipe. A second connecting pipe communicating with the heat dissipation box is fixedly installed at the end of the horizontal pipe away from the first connecting pipe. A water supply box is fixedly installed on the inner bottom wall of the heat dissipation box, and a water inlet valve is inserted into the side wall of the water supply box. A water supply pipe extending into the water supply box is inserted into the top of the heat dissipation pipe.

[0011] Furthermore, a piston plate is slidably installed inside the water supply box, and a drain valve with an input end connected to the outside is fixedly installed at the bottom end of the water supply pipe. A first push rod is fixedly installed on the top wall of the piston plate, and the top wall of the first push rod is inclined. A second push rod is fixedly installed on the output end of the motor. A first spring is fixedly installed between the top wall of the piston plate and the water supply box.

[0012] Furthermore, a rotating rod is uniformly and rotatably installed on the horizontal pipe, and a turbulence vane is fixedly installed on the rotating rod. An impeller that mates with the horizontal pipe is fixedly installed at the end of the rotating rod away from the fan blade.

[0013] Furthermore, an elastic airbag is fixedly installed on the inner wall of the housing, and the filter screen is fixedly connected to the side wall of the elastic airbag. Inclined blocks that cooperate with the fan blades are symmetrically fixedly installed on the filter screen.

[0014] Furthermore, a brush plate is embedded in the side wall of the sealing plate.

[0015] Furthermore, a vertical groove communicating with the housing is provided on the side wall of the mounting groove. A connecting rod that is fixedly connected to the sealing plate is slidably installed in the vertical groove. An air blowing rod is fixedly installed on the bottom wall of the connecting rod. A first air groove is provided on the air blowing rod. An exhaust groove is provided on the first air groove. A second air groove communicating with the first air groove is provided on the connecting rod.

[0016] Furthermore, a linkage groove is provided on the housing, and an air inlet valve and an air outlet valve are respectively inserted on the elastic airbag. The output end of the air outlet valve is connected to the linkage groove. An elastic diaphragm connected to the linkage groove is fixedly installed on the side wall of the housing, and a pressure valve is inserted on the elastic air diaphragm.

[0017] Furthermore, a telescopic tube extending into the second air groove is fixedly installed on the top wall of the linkage groove, and a vertical rod extending out of the second air groove is inserted into the top wall of the second air groove, and a second spring is fixedly installed between the vertical rod and the second air groove.

[0018] Furthermore, a collection box is detachably installed on the bottom wall of the housing, a brush rod is rotatably installed inside the collection box, a gear is fixedly installed on the shaft of the brush rod, a rack that meshes with the gear is fixedly installed on the sealing rod, and a spring is fixedly installed between the shaft of the brush rod and the collection box.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) This solution uses a memory alloy wire. When the projector is finished and turned off, the temperature of the projector body gradually decreases. Then the temperature of the memory alloy wire gradually decreases and it contracts. During the contraction of the memory alloy wire, the sealing plate moves downward. During the downward movement of the sealing plate, it gradually disengages from the switch. At this time, the motor is powered off and stops rotating, so that the projector can continue to dissipate heat after it is finished. At the same time, the air inlet is gradually blocked during the downward movement of the sealing plate, which effectively prevents external dust from adhering to the surface of the filter plate when the projector is not in use and affecting the normal air intake of the shell through the filter screen, thus improving the heat dissipation effect of the projector.

[0021] (2) In this solution, the piston plate and the first spring cooperate to gradually contact the inclined surface of the first push rod during the rotation of the second push rod and apply a pushing force to the first push rod. Then, under the action of the pushing force, the first push rod drives the piston plate to move downward. During the downward movement of the first push rod, the coolant in the water supply box is squeezed and flows into the heat dissipation pipe through the drain valve and water supply pipe, and then flows back into the heat dissipation box through the first connecting pipe, horizontal pipe and second connecting pipe. During the process of the coolant passing through the heat dissipation pipe, it can absorb the heat of the projector body. Then, when the first push rod and the second push rod are disengaged, the first spring contracts and drives the piston plate to move upward. During the upward movement of the piston plate, the water supply box draws coolant from the heat dissipation box through the water inlet valve. That is, during the rotation of the motor, it can drive the coolant to flow in the heat dissipation pipe, thereby improving the heat dissipation effect of the projector.

[0022] (3) This solution uses the combination of rotating rod, impeller and turbulence blades. When the coolant passes through the horizontal pipe, it will hit the impeller and drive the impeller to rotate. Then, when the impeller rotates, the rotating rod will drive the turbulence blades to rotate. When the turbulence blades rotate, the airflow entering the housing can be dispersed, so that the airflow can fully contact the projector body, which can improve the heat dissipation effect.

[0023] (4) This solution sets up a brush plate, which moves downward as the sealing plate moves downward. During the downward movement of the brush plate, it gradually contacts the filter plate and cleans the dust on the surface of the filter plate. During the rotation of the turbulence blade, it gradually contacts the inclined surface of the inclined block and applies a thrust to the inclined block. Then, under the action of the thrust, the inclined block moves the filter plate. When the turbulence blade disengages from the inclined block, the elastic airbag extends and drives the filter plate to reset. During the shaking of the filter plate, some of the dirt on the surface of the filter plate can be disengaged from the filter plate. At the same time, the dirt on the surface of the filter plate can be loosened, making it easier for the brush plate to clean it, thus improving the cleaning effect.

[0024] (5) This solution opens an exhaust groove. During the compression of the elastic airbag, the airflow flows through the exhaust valve and the linkage groove into the elastic membrane and causes the elastic membrane to expand. Then, during the downward movement of the sealing plate, the vertical rod moves downward. During the upward movement of the vertical rod, it gradually disengages from the telescopic tube. At this time, the elastic membrane contracts and drives the gas through the linkage groove, telescopic tube, first air groove, second air groove, and exhaust groove to blow onto the filter plate. In other words, the filter plate can be blown with air during the cleaning process of the brush plate, thereby improving the cleaning effect of the filter plate.

[0025] (6) This solution sets up a brush rod, which drives the rack to move downward as the sealing rod moves downward. As the rack moves downward, it gradually comes into contact with the gear and drives the brush rod to rotate. As the brush rod rotates, the spring gradually accumulates power. When the sealing rod enters the collection box, the brush plate comes into contact with the brush rod. At this time, the rack teeth disengage from the gear. Then the spring resets and drives the brush rod to rotate. During the rotation of the brush rod, the bristles on the brush plate can be cleaned, thereby improving the cleaning effect of the brush plate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a cross-sectional view of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 For the present invention Figure 2 Enlarged view at point B in the middle;

[0030] Figure 5 This is a side view of the combination of the water supply pipe and piston plate of the present invention;

[0031] Figure 6 This is a side view of the combination of the horizontal pipe, the first connecting pipe, and the second connecting pipe of the present invention;

[0032] Figure 7 This is a side view of the combination of the sealing plate, elastic pad, rack, and gear of the present invention;

[0033] Figure 8 This is a side view of the combination of the brush rod and the spring of the present invention.

[0034] Explanation of the labels in the diagram:

[0035] 1. Housing; 2. Projector body; 3. Lens; 4. Motor; 5. Filter screen; 6. Filter plate; 7. Elastic pad; 8. Sealing plate; 9. Mounting groove; 10. Shape memory alloy wire; 11. Heat conduction rod; 12. Switch; 13. Heat sink; 14. Water supply box; 15. Inlet valve; 16. Water supply pipe; 17. Piston plate; 18. Drain valve; 19. First push rod; 20. Second push rod; 21. First spring; 22. Rotating rod; 23. Baffle vane; 24. Impeller; 25. Elastic airbag; 26. Inclined... 27. Brush plate; 28. Linking rod; 29. ​​Air blower; 30. First air groove; 31. Exhaust groove; 32. Second air groove; 33. Linking groove; 34. Inlet valve; 35. Exhaust valve; 36. Elastic membrane; 37. Pressure valve; 38. Telescopic tube; 39. Vertical rod; 40. Second spring; 41. Collection box; 42. Brush rod; 43. Gear; 44. Rack; 45. Spring; 46. Heat dissipation pipe; 47. First connecting pipe; 48. Second connecting pipe; 49. Fan blade; 50. Horizontal pipe. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1 to 8 A projector with high-efficiency heat dissipation includes a housing 1, a projector body 2 fixedly installed on the inner wall of the housing 1, and a lens 3 electrically connected to the projector body 2 embedded on the side wall of the housing 1.

[0038] The heat dissipation mechanism includes an air inlet and an exhaust outlet symmetrically arranged on the housing 1. A motor 4 is fixedly installed on the inner bottom wall of the housing 1. A fan blade 49 that cooperates with the exhaust outlet is fixedly installed on the output end of the motor 4. A filter screen 5 is embedded in the exhaust outlet. A filter plate 6 that cooperates with the air inlet is provided on the housing 1. An installation groove 9 that communicates with the air inlet is provided on the housing 1. A sliding groove is symmetrically provided on the side wall of the installation groove 9. An elastic pad 7 is fixedly installed on the bottom wall of the sliding groove. A sealing plate 8 is fixedly installed on the top wall of the elastic pad 7, and the sealing plate 8 slides with the installation groove 9. A shape memory alloy wire 10 is fixedly installed between the sealing plate 8 and the bottom wall of the sliding groove. A heat conduction rod 11 is fixedly installed between the projector body 2 and the shape memory alloy wire 10. A switch 12 that is electrically connected to the motor 4 is fixedly installed on the top wall of the installation groove 9.

[0039] Initially, the elastic pad 7 is compressed, and the shape memory alloy wire 10 is in a freely extended state at room temperature. Then, as the projector is used, the temperature of the projector body 2 gradually increases. This temperature is transferred to the surface of the shape memory alloy wire 10 through the heat-conducting rod 11, causing the wire to extend. The elastic pad 7 then extends, causing the sealing plate 8 to move upwards. During this upward movement, the sealing plate 8 gradually loses contact with the air inlet. Simultaneously, as the sealing plate 8 moves upwards, it gradually contacts and presses against the switch 12. Then, under the action of the switch 12, the motor 4 is started, driving the fan blade 49 to rotate. During the rotation of the fan blade 49, the airflow in the housing 1 flows outwards along with the solid filter screen 5, reducing the pressure inside the housing 1. Then, the housing 1... The filter plate 6 and air inlet draw air from the outside. When the projector is finished and turned off, the temperature of the projector body 2 gradually decreases. Then, the temperature of the shape memory alloy wire 10 gradually decreases and it contracts. During the contraction of the shape memory alloy wire 10, the sealing plate 8 moves downward. During the downward movement of the sealing plate 8, it gradually disengages from the switch 12. At this time, the motor 4 is de-energized and stops rotating, so that the projector can continue to dissipate heat after the projector is finished, which improves the heat dissipation effect of the projector. During the downward movement of the sealing plate 8, the air inlet is gradually blocked, which effectively prevents external dust from adhering to the surface of the filter plate 6 when the projector is not in use and affecting the normal air intake of the housing 1 through the filter screen 5, thus improving the heat dissipation effect of the projector.

[0040] like Figure 2 , Figure 5 , Figure 6 As shown, a heat dissipation pipe 46 is fixedly installed on the top wall of the housing 1, and a heat dissipation box 13 is fixedly installed on the bottom wall of the housing 1. The heat dissipation box 13 is filled with coolant. A first connecting pipe 47 is fixedly installed on the heat dissipation pipe 46. A horizontal pipe 50 is fixedly installed at the end of the first connecting pipe 47 away from the heat dissipation pipe 46. A second connecting pipe 48 communicating with the heat dissipation box 13 is fixedly installed at the end of the horizontal pipe 50 away from the first connecting pipe 47. A water supply box 14 is fixedly installed on the inner bottom wall of the heat dissipation box 13. A water inlet valve 15 is inserted into the side wall of the water supply box 14. A water supply pipe 16 extending into the water supply box 14 is inserted into the top of the heat dissipation pipe 46.

[0041] A piston plate 17 is slidably installed inside the water supply box 14, and a drain valve 18 with an input end connected to the outside is fixedly installed at the bottom end of the water supply pipe 16. A first push rod 19 is fixedly installed on the top wall of the piston plate 17, and the top wall of the first push rod 19 is inclined. A second push rod 20 is fixedly installed on the output end of the motor 4. A first spring 21 is fixedly installed between the top wall of the piston plate 17 and the water supply box 14.

[0042] A rotating rod 22 is uniformly mounted on the horizontal pipe 50. A turbulence vane 23 is fixedly mounted on the rotating rod 22. An impeller 24 that cooperates with the horizontal pipe 50 is fixedly mounted at the end of the rotating rod 22 away from the fan blade 49.

[0043] By adopting the above technical solution, the second push rod 20 is driven to rotate during the operation of the motor 4. During the rotation of the second push rod 20, it gradually contacts the inclined surface of the first push rod 19 and applies a pushing force to the first push rod 19. Then, under the action of the pushing force, the first push rod 19 drives the piston plate 17 to move downward. At this time, the first spring 21 is stretched and has a tendency to recover. During the downward movement of the first push rod 19, the coolant in the water supply box 14 is squeezed and flows through the drain valve 18 and the water supply pipe 16 to the heat dissipation pipe 46 and flows back to the heat dissipation box 13 through the first connecting pipe 47, the horizontal pipe 50 and the second connecting pipe 48. During the process of the coolant passing through the heat dissipation pipe 46, it can absorb the heat of the projector body 2. Then, when the first push rod 19 and the second push rod 20 are no longer in contact, the first spring 21 contracts and drives the piston plate 17 to move upward. During the upward movement of the piston plate 17, the water supply box 14 draws coolant from the heat dissipation box 13 through the water inlet valve 15. That is, during the rotation of the motor 4, the coolant can be driven to flow in the heat dissipation pipe 46, thereby improving the heat dissipation effect of the projector.

[0044] As the coolant passes through the horizontal pipe 50, it impacts the impeller 24 and causes the impeller 24 to rotate. Then, as the impeller 24 rotates, it drives the baffle 23 to rotate through the rotating rod 22. During the rotation of the baffle 23, the airflow entering the housing 1 can be dispersed, so that the airflow can fully contact the projector body 2, thereby improving the heat dissipation effect.

[0045] like Figure 2 , Figure 3 As shown, an elastic airbag 25 is fixedly installed on the inner side wall of the housing 1, and the filter screen 5 is fixedly connected to the side wall of the elastic airbag 25. An inclined block 26 that cooperates with the fan blade 49 is symmetrically fixedly installed on the filter screen 5.

[0046] A brush plate 27 is embedded in the side wall of the sealing plate 8.

[0047] By adopting the above technical solution, during the process of the housing 1 drawing in external airflow through the filter plate 6, the filter plate 6 can block dust in the airflow, thereby effectively preventing dust from adhering to the surface of the projector body 2 and affecting the heat dissipation effect. Then, during the downward movement of the sealing plate 8, the brush plate 27 moves downward, gradually contacting the filter plate 6 and cleaning the dust on the surface of the filter plate 6, thereby effectively preventing dust from affecting the normal airflow through the filter plate 6 and improving the heat dissipation effect.

[0048] As the turbulence vane 23 rotates, it gradually comes into contact with the inclined surface of the inclined block 26 and applies a pushing force to the inclined block 26. Under the action of the pushing force, the inclined block 26 drives the filter plate 6 to move and squeezes the elastic airbag 25. When the turbulence vane 23 disengages from the inclined block 26, the elastic airbag 25 extends and drives the filter plate 6 to reset. During the shaking of the filter plate 6, some of the dirt on the surface of the filter plate 6 can be separated from the filter plate 6, and the dirt on the surface of the filter plate 6 can be loosened, making it easier for the brush plate 27 to clean it, thus improving the cleaning effect.

[0049] like Figure 2 , Figure 3 , Figure 4 As shown, a vertical groove communicating with the housing 1 is provided on the side wall of the mounting groove 9. A connecting rod 28 fixedly connected to the sealing plate 8 is slidably installed in the vertical groove. An air blowing rod 29 is fixedly installed on the bottom wall of the connecting rod 28. A first air groove 30 is provided on the air blowing rod 29. An exhaust groove 31 is provided on the first air groove 30. A second air groove 32 communicating with the first air groove 30 is provided on the connecting rod 28.

[0050] The housing 1 has a linkage groove 33. An air inlet valve 34 and an air outlet valve 35 are respectively inserted into the elastic airbag 25, and the output end of the air outlet valve 35 is connected to the linkage groove 33. An elastic membrane 36 connected to the linkage groove 33 is fixedly installed on the side wall of the housing 1, and a pressure valve 37 is inserted into the elastic air membrane.

[0051] A telescopic tube 38 extending into the second air groove 32 is fixedly installed on the top wall of the linkage groove 33. A vertical rod 39 extending out of the second air groove 32 is inserted into the top wall of the second air groove 32, and a second spring 40 is fixedly installed between the vertical rod 39 and the second air groove 32.

[0052] By adopting the above technical solution, in the initial state, the second spring 40 is in a stretched state. During the extension of the elastic airbag 25, air is drawn in from the outside through the air inlet valve 34. Then, during the compression of the elastic airbag 25, the airflow flows through the exhaust valve 35 and the linkage groove 33 into the elastic membrane 36, causing the elastic membrane 36 to expand. Then, during the downward movement of the sealing plate 8, the vertical rod 39 moves downward. At this time, the second spring 40 gradually contracts and drives the vertical rod 39 to move upward. During the upward movement of the vertical rod 39, it gradually disengages from the telescopic tube 38. The elastic membrane 36 contracts and drives gas through the linkage groove 33, telescopic tube 38, first air groove 30, second air groove 32, and exhaust groove 31 to blow air onto the filter plate 6. This means that air can be blown onto the filter plate 6 during the cleaning process of the brush plate 27, thereby improving the cleaning effect of the filter plate 6. At the same time, by setting a pressure valve 37, when the pressure inside the elastic membrane 36 reaches the maximum limit, the excess gas inside the elastic membrane 36 flows to the outside through the pressure valve 37, thereby effectively preventing the elastic membrane 36 from being damaged due to excessive airflow pressure and affecting the normal extension of the elastic airbag 25.

[0053] As the sealing plate 8 moves upward, it causes the vertical rod 39 to come into contact with the vertical groove. Then, the vertical groove pushes the vertical rod 39 downward. At this time, the second spring 40 is stretched, and as the vertical rod 39 moves downward, it gradually seals the telescopic tube 38, thus preparing it for the next operation.

[0054] like Figure 2 , Figure 7 , Figure 8 As shown, a collection box 41 is detachably installed on the bottom wall of the housing 1. A brush rod 42 is rotatably installed inside the collection box 41. A gear 43 is fixedly installed on the rotating shaft of the brush rod 42. A rack 44 that meshes with the gear 43 is fixedly installed on the sealing rod. A spring 45 is fixedly installed between the rotating shaft of the brush rod 42 and the collection box 41.

[0055] By adopting the above technical solution, the sealing rod moves downward, driving the rack 44 to move downward. As the rack 44 moves downward, it gradually comes into contact with the gear 43, which in turn drives the brush rod 42 to rotate. As the brush rod 42 rotates, the spring 45 gradually accumulates power. When the sealing rod enters the collection box 41, the brush plate 27 comes into contact with the brush rod 42. At this time, the teeth of the rack 44 disengage from the gear 43. Then the spring 45 resets and drives the brush rod 42 to rotate. During the rotation of the brush rod 42, the bristles on the brush plate 27 can be cleaned, thereby improving the cleaning effect of the brush plate 27.

[0056] Usage: When the projector is in use, the temperature of the projector body 2 gradually increases. At this time, the temperature is transferred to the surface of the memory alloy wire 10 through the heat conduction rod 11, causing the memory alloy wire 10 to stretch. Then, the elastic pad 7 stretches and moves the sealing plate 8 upward. During the upward movement of the sealing plate 8, it gradually loses contact with the air inlet. At the same time, the sealing plate 8 gradually contacts and presses the switch 12. Then, under the action of the switch 12, the motor 4 is started and drives the fan blade 49 to rotate. During the rotation of the fan blade 49, the airflow in the housing 1 flows outward with the solid filter screen 5, reducing the pressure inside the housing 1. Then, the housing 1 draws air from the outside through the filter plate 6 and the air inlet. When the projector is finished using... After the projector body 2 is turned off, the temperature of the shape memory alloy wire 10 gradually decreases and it contracts. During the contraction of the shape memory alloy wire 10, the sealing plate 8 moves downward. During the downward movement of the sealing plate 8, it gradually disengages from the switch 12. At this time, the motor 4 is de-energized and stops rotating, so that the projector can continue to dissipate heat after use. During the downward movement of the sealing plate 8, the air inlet is gradually blocked. During the process of the coolant passing through the horizontal pipe 50, it will hit the impeller 24 and drive the impeller 24 to rotate. During the rotation of the impeller 24, the rotating rod 22 drives the baffle 23 to rotate. During the rotation of the baffle 23, the airflow entering the housing 1 can be dispersed.

[0057] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A projector with high-efficiency heat dissipation, characterized in that, Includes a housing (1), on the inner wall of the housing (1) a projector body (2) is fixedly installed, and a lens (3) electrically connected to the projector body (2) is embedded on the side wall of the housing (1); The heat dissipation mechanism includes an air inlet and an exhaust outlet symmetrically arranged on the housing (1). A motor (4) is fixedly installed on the inner bottom wall of the housing (1). A fan blade (49) that cooperates with the exhaust outlet is fixedly installed on the output end of the motor (4). A filter screen (5) is embedded in the exhaust outlet. A filter plate (6) that cooperates with the air inlet is provided on the housing (1). An installation groove (9) communicating with the air inlet is opened on the housing (1). Sliding grooves are symmetrically opened on the side wall of the installation groove (9). An elastic pad (7) is fixedly installed on the bottom wall of the slide groove, and a sealing plate (8) is fixedly installed on the top wall of the elastic pad (7). The sealing plate (8) slides in fit with the mounting groove (9). A memory alloy wire (10) is fixedly installed between the sealing plate (8) and the bottom wall of the slide groove. A heat-conducting rod (11) is fixedly installed between the projector body (2) and the memory alloy wire (10). A switch (12) electrically connected to the motor (4) is fixedly installed on the top wall of the mounting groove (9).

2. The projector with high-efficiency heat dissipation according to claim 1, characterized in that: A heat dissipation pipe (46) is fixedly installed on the top wall of the housing (1), and a heat dissipation box (13) is fixedly installed on the bottom wall of the housing (1). The heat dissipation box (13) is filled with coolant. A first connecting pipe (47) is fixedly installed on the heat dissipation pipe (46). A horizontal pipe (50) is fixedly installed at the end of the first connecting pipe (47) away from the heat dissipation pipe (46). A second connecting pipe (48) communicating with the heat dissipation box (13) is fixedly installed at the end of the horizontal pipe (50) away from the first connecting pipe (47). A water supply box (14) is fixedly installed on the inner bottom wall of the heat dissipation box (13). A water inlet valve (15) is inserted into the side wall of the water supply box (14). A water supply pipe (16) extending into the water supply box (14) is inserted into the top of the heat dissipation pipe (46).

3. The projector with high-efficiency heat dissipation according to claim 2, characterized in that: A piston plate (17) is slidably installed inside the water supply box (14), and a drain valve (18) with an input end connected to the outside is fixedly installed at the bottom end of the water supply pipe (16). A first push rod (19) is fixedly installed on the top wall of the piston plate (17), and the top wall of the first push rod (19) is inclined. A second push rod (20) is fixedly installed on the output end of the motor (4). A first spring (21) is fixedly installed between the top wall of the piston plate (17) and the water supply box (14).

4. A projector with high-efficiency heat dissipation according to claim 2, characterized in that: A rotating rod (22) is uniformly rotatably mounted on the horizontal pipe (50). A turbulence vane (23) is fixedly mounted on the rotating rod (22). An impeller (24) that cooperates with the horizontal pipe (50) is fixedly mounted at the end of the rotating rod (22) away from the fan blade (49).

5. A projector with high-efficiency heat dissipation according to claim 1, characterized in that: An elastic airbag (25) is fixedly installed on the inner wall of the housing (1), and the filter (5) is fixedly connected to the side wall of the elastic airbag (25). An inclined block (26) that cooperates with the fan blade (49) is symmetrically fixedly installed on the filter (5).

6. A projector with high-efficiency heat dissipation according to claim 1, characterized in that: The side wall of the sealing plate (8) is fitted with a brush plate (27).

7. A projector with high-efficiency heat dissipation according to claim 1, characterized in that: The mounting groove (9) has a vertical groove on its side wall that communicates with the housing (1). A connecting rod (28) that is fixedly connected to the sealing plate (8) is slidably installed in the vertical groove. An air blowing rod (29) is fixedly installed on the bottom wall of the connecting rod (28). A first air groove (30) is provided on the air blowing rod (29). An exhaust groove (31) is provided on the first air groove (30). A second air groove (32) that communicates with the first air groove (30) is provided on the connecting rod (28).

8. A projector with high-efficiency heat dissipation according to claim 5, characterized in that: The housing (1) has a linkage groove (33), and the elastic airbag (25) is respectively equipped with an air inlet valve (34) and an air outlet valve (35). The output end of the air outlet valve (35) is connected to the linkage groove (33). An elastic membrane (36) connected to the linkage groove (33) is fixedly installed on the side wall of the housing (1), and a pressure valve (37) is inserted on the elastic membrane.

9. A projector with high-efficiency heat dissipation according to claim 8, characterized in that: A telescopic tube (38) extending into the second air groove (32) is fixedly installed on the top wall of the linkage groove (33). A vertical rod (39) extending out of the second air groove (32) is inserted into the top wall of the second air groove (32), and a second spring (40) is fixedly installed between the vertical rod (39) and the second air groove (32).

10. A projector with high-efficiency heat dissipation according to claim 1, characterized in that: A collection box (41) is detachably installed on the bottom wall of the housing (1). A brush rod (42) is rotatably installed inside the collection box (41). A gear (43) is fixedly installed on the shaft of the brush rod (42). A rack (44) that meshes with the gear (43) is fixedly installed on the sealing rod. A spring (45) is fixedly installed between the shaft of the brush rod (42) and the collection box (41).

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