High-definition LCD projector with self-cleaning lens module

Abstract

The application relates to a high-definition LCD projector with a self-cleaning lens module. The air flow curtain in a sag state plays the role of effectively closing and isolating the lens from external dust for a long time. When needed, the air flow is bidirectionally flowed on the air flow curtain, the air flow is sprayed to the lens surface in a ring-shaped dispersion state, the surface dust of the lens is blown away, the air containing dust is backflowed to the air flow curtain, the lens is blown away again after purification, the frequency of personnel climbing for cleaning is reduced, the risk of personnel climbing for cleaning is reduced, the dust removal filter element and the water tank are combined, the backflowing air is double purified, the cleaning effect on the lens is effectively improved, the dust removal filter element is placed in the water tank to be wet, the manual cleaning process of the lens is realized, personnel do not need to carry cleaning tools when cleaning the lens, and the inconvenience and danger of personnel climbing are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to an LCD projector, in particular to a high-definition LCD projector with a lens module self-cleaning function applied to the projection field. BACKGROUND

[0002] The LCD projector is a high-tech product brought by the development of liquid crystal technology, lighting technology and integrated circuit. The key technology of the LCD projector is the manufacture of the liquid crystal panel. The LCD projector utilizes the photoelectric effect of the liquid crystal, that is, the arrangement of the liquid crystal molecules is changed under the action of the electric field, which influences the light transmittance or reflectivity of the liquid crystal unit, thereby influencing the optical properties thereof, and a picture with different gray levels and colors is generated.

[0003] The Chinese patent CN201910418374.8 discloses a computer multimedia teaching device for ideological and political education. The lens maintenance device is combined with the supercharged cleaning device. Before use, the dust on the lens surface is removed by using the supercharged airflow, then the surface condensation water mist is scraped off, and the anti-fog agent is applied on the lens surface to prevent the lens of the projector from being foggy and causing the teacher's courseware projection to be blurred on the screen, thereby improving the clarity of the multimedia equipment projection. After use, the chalk dust adhered to the lens surface is removed, the lens is sealed and stored to avoid lens scratches and prolong the service life of the multimedia equipment.

[0004] Since the most important thing of the LCD projector is the clarity of the projected image, the projector installed at a high altitude is prone to dust adhesion during use. Due to the installation height, the cleaning personnel need to use climbing equipment to clean the lens, which is not only inconvenient to operate but also causes great safety hazards to the personnel. The structure for cleaning the lens in the above-mentioned disclosed patent is relatively complex, and the direct contact process with the lens is long, which is easy to cause damage to the lens.

[0005] APPLICATION CONTENT

[0006] In view of the above prior art, the technical problem to be solved by the application is that the lens of the LCD projector installed at a high altitude is prone to dust adhesion and is not easy to be manually cleaned by human, which easily causes great safety hazards to the personnel for cleaning.

[0007] In order to solve the above problems, the application provides a high-definition LCD projector with a lens module self-cleaning function, which comprises a projector body and a lens fixedly connected to the side end of the projector body, the upper end of the projector body is fixedly connected with a top plate, the outer end of the top plate is fixedly connected with an electric push rod, the telescopic end of the electric push rod is connected with a dust removal curtain, the dust removal curtain comprises a gas guide horizontal rod connected with the electric push rod, the outer end of the gas guide horizontal rod is fixedly connected with a gas flow curtain, the gas flow curtain vertically falls on the side end of the projector body and is located on the outer side of the lens, the lower end of the gas flow curtain is fixedly connected with a bottom rod, the upper end of the projector body is also fixedly connected with a gas pump, the air inlet end and the air outlet end of the gas pump are fixedly connected with an air inlet pipe and an air outlet pipe respectively, and the two ends of the air outlet pipe and the air inlet pipe are connected with the two ends of the gas guide horizontal rod respectively.

[0008] In the high-definition LCD projector with a lens module self-cleaning function, the gas flow curtain in the sagging state covers the outer side of the lens, which can effectively close and isolate the lens from the external dust, and the closed state of the gas flow curtain on the lens is maintained before the projector body is used, through the bidirectional flow of the gas flow on the gas flow curtain, on the one hand, the gas flow is sprayed to the surface of the lens in a ring-shaped dispersed state, and the surface dust is blown away, on the other hand, the gas with dust around the lens is backflowed to the gas flow curtain, and after being purified, the lens is blown away again, compared with the prior art, the application provides a dust prevention and cleaning method which is simple to operate for the LCD projector lens at a high altitude, effectively reduces the frequency of personnel climbing for cleaning, and reduces the risk of personnel climbing for cleaning.

[0009] As a further supplement of the application, the gas flow curtain comprises a waterproof cloth fixedly connected between the gas guide horizontal rod and the bottom rod, one end of the waterproof cloth close to the lens is fixedly connected with a gas dispersion ring, a gas collection ring, an air inlet sleeve and an air outlet sleeve, the gas dispersion ring surrounds the outside of the gas collection ring in a notched ring structure, one end of the air inlet sleeve is fixedly connected with the gas dispersion ring and communicates with each other, one end of the air outlet sleeve penetrates through the notch of the gas dispersion ring and is fixedly connected with the gas collection ring and communicates with each other, a plurality of uniformly distributed gas dispersion holes are formed in the outer end of the gas dispersion ring, and a plurality of uniformly distributed gas collection holes are formed in the outer end of the gas collection ring.

[0010] As a further supplement of the application, one end of the gas guide horizontal rod close to the air outlet pipe is provided with an air inlet groove, and one end of the air inlet sleeve away from the gas dispersion ring is fixedly penetrated through the gas guide horizontal rod and communicates with the air inlet groove.

[0011] As a further supplement of the application, one end of the gas guide horizontal rod close to the air inlet pipe is provided with an air outlet groove, one end of the air outlet sleeve away from the gas collection ring is fixedly penetrated through the gas guide horizontal rod and communicates with the air outlet groove, and a dust removal filter element is arranged in the air outlet groove.

[0012] As a further supplement of the application, the upper end edge of the projector body is fixedly connected with a backing plate, the backing plate is located on the upper side of the lens, and the gas flow curtain is located on the upper side of the backing plate.

[0013] As a further supplement to the present application, the lower end of the projector body is fixedly connected with a positioning plate, and the outer surfaces of the positioning plate and the bottom rod are coated with a magnetic coating.

[0014] As a further improvement of the present application, the upper end of the projector body is fixedly connected with a water tank, the inside of the water tank contains cleaning water, and the air outlet pipe fixedly penetrates through one pair of side ends of the water tank and extends into the inside of the cleaning water.

[0015] As a further improvement of the present application, a plurality of uniformly distributed mesh holes are arranged on the air outlet pipe and located inside the water tank, the side of the air outlet pipe close to the air pump is lower than the liquid level of the cleaning water, and the side of the air outlet pipe away from the air pump is higher than the liquid level of the cleaning water.

[0016] As a further improvement of the present application, a water inlet is formed in the upper end of the water tank, and a sealing plug is threadedly connected in the inside of the water inlet.

[0017] As a further improvement of the present application, the end of the air outlet pipe is threadedly connected with the inside of the air inlet groove, the end of the air inlet pipe is threadedly connected with the inside of the air outlet groove, the end of the electric push rod away from the top plate is fixedly connected with a screw rod, the side end of the air guide cross rod is provided with a T-shaped joint, the T-shaped end of the T-shaped joint penetrates through the air guide cross rod and is rotationally connected in the inside thereof, and the open end of the T-shaped joint is threadedly connected with the outer end of the screw rod.

[0018] In summary, the air flow curtain in the sag state can effectively close and isolate the lens from the external dust for a long time, and when needed, the air flow can flow in two directions on the air flow curtain, so that the air flow is dispersed in a ring shape and sprayed to the surface of the lens, the dust on the surface of the lens is blown away, and the gas containing dust is returned to the air flow curtain and cleaned again to blow the lens, thereby effectively reducing the frequency and risk of personnel climbing for cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the first embodiment of the present application Figure 1 ;

[0020] Figure 2 is a perspective view of the air flow curtain in the first embodiment of the present application

[0021] Figure 3 is a perspective view of the first embodiment of the present application Figure 2 ;

[0022] Figure 4 isometric view of the air curtain in the first embodiment of the present application when conveying air;

[0023] Figure 5 partial sectional view of the air diffuser ring in the first embodiment of the present application;

[0024] Figure 6 partial sectional view of the air collecting ring in the first embodiment of the present application;

[0025] Figure 7 isometric view of the second embodiment of the present application;

[0026] Figure 8 partial top view of the air guide crossbar and the electric push rod in the second embodiment of the present application;

[0027] Figure 9 isometric view of the third embodiment of the present application;

[0028] Figure 10 front view of the water tank in the third embodiment of the present application;

[0029] Figure 11 isometric view of the air curtain in the third embodiment of the present application;

[0030] Figure 12 schematic view of the structure when manually cleaning the dust removal filter element in the third embodiment of the present application.

[0031] Explanation of reference numerals in the drawings:

[0032] 1 projector body, 2 lens, 3 top plate, 4 electric push rod, 401 screw rod, 5 air guide crossbar, 501 air inlet groove, 502 air outlet groove, 503 dust removal filter element, 504 T-shaped joint, 6 air curtain, 61 waterproof cloth, 62 air diffuser ring, 6201 air diffuser hole, 63 air collecting ring, 6301 air collecting hole, 64 air inlet sleeve, 65 air outlet sleeve, 7 bottom rod, 8 air pump, 9 air outlet pipe, 901 mesh, 10 air inlet pipe, 11 pad plate, 12 positioning plate, 13 water tank. DETAILED DESCRIPTION

[0033] The three embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] First embodiment:

[0035] The present application provides a high-definition LCD projector with a lens module self-cleaning function. Please refer to Figure 1 and Figure 3The utility model relates to a projection device, including projector body 1 and fixedly connected to the lens 2 of projector body 1 side end, the upper end of projector body 1 is fixedly connected with top plate 3, the outer end of top plate 3 is fixedly connected with electric push rod 4, and the telescopic end of electric push rod 4 is connected with dust curtain.

[0036] Please refer to Figure 1 Dust curtain includes the air guide crossbar 5 of electric push rod 4 connection, the outer end of air guide crossbar 5 is fixedly connected with air flow curtain 6, and air flow curtain 6 vertically falls in the side end of projector body 1 and is located the outside of lens 2, and the lower end of air flow curtain 6 is fixedly connected with bottom rod 7, and the upper end of projector body 1 is also fixedly connected with air pump 8, and electric push rod 4 and air pump 8 are electrically connected with the remote control device of control projector body 1, and also are controlled by the remote control device, realize the opening and closing of electric push rod 4 and air pump 8, and the air inlet end and air outlet end of air pump 8 are fixedly connected with air inlet pipe 10 and air outlet pipe 9 respectively, and the two ends of air outlet pipe 9 and air inlet pipe 10 are connected with the two ends of air guide crossbar 5 respectively.

[0037] Please refer to Figure 2 Air flow curtain 6 includes waterproof cloth 61 fixedly connected between air guide crossbar 5 and bottom rod 7, and one end of waterproof cloth 61 near lens 2 is fixedly connected with air dispersing ring 62, air collecting ring 63, air inlet sleeve 64 and air outlet sleeve 65, and the four are made of air-tight flexible material, such as flexible rubber material, to realize gas flow while effectively maintaining the flexibility of air flow curtain 6, air dispersing ring 62 surrounds air collecting ring 63 outside in notch ring structure, one end of air inlet sleeve 64 is fixedly connected with air dispersing ring 62 and communicates, and one end of air outlet sleeve 65 passes through the notch of air dispersing ring 62 and is fixedly connected with air collecting ring 63 and communicates;

[0038] Combined with Figure 4 And Figure 5 A plurality of air dispersing holes 6201 are formed in the outer end of air dispersing ring 62, and when air is introduced into air dispersing ring 62 by air inlet sleeve 64, the air can be dispersed outward through air dispersing holes 6201 to blow off dust on the surface of lens 2, combined with Figure 4 And Figure 6 A plurality of air collecting holes 6301 are formed in the outer end of air collecting ring 63, and under the action of air suction, the air after blowing off dust can enter air collecting ring 63 through air collecting holes 6301, and then enter air outlet sleeve 65 to be collected, the ring structure of air dispersing ring 62 can make the air be dispersed to the surface of lens 2 in multiple areas, improving the cleaning efficiency of lens 2, the aperture of air collecting holes 6301 is larger than that of air dispersing holes 6201, on the one hand, the air is blown to lens 2 in small flow and gently, and on the other hand, the air with dust can smoothly pass through air collecting holes 6301 into air collecting ring 63.

[0039] Please refer to Figure 2An air inlet groove 501 is provided at one end of the air guide crossbar 5 near the air outlet pipe 9. The end of the air inlet sleeve 64 furthest from the air diffuser ring 62 is fixedly inserted through the air guide crossbar 5 and communicates with the air inlet groove 501. Figure 2 and Figure 4 An air outlet groove 502 is provided at one end of the air guide bar 5 near the air inlet pipe 10. The end of the air outlet sleeve 65 away from the air collection ring 63 is fixedly inserted through the air guide bar 5 and communicates with the air outlet groove 502. A dust removal filter element 503 is placed inside the air outlet groove 502.

[0040] Combination Figure 1 and Figure 4 When the air pump 8 is started, it delivers gas into the air outlet pipe 9. The gas enters the air inlet sleeve 64 through the air inlet groove 501 and is finally blown out onto the surface of the lens 2 through the air diffuser 6201, causing the dust on the surface to fall off and flow with the airflow. At the same time, the air pump 8 draws gas from the air inlet pipe 10, creating a negative pressure inside the air inlet pipe 10 and the air outlet sleeve 65 connected to it. This causes the air collecting ring 63 to draw in the airflow carrying dust around the lens 2. The airflow flows through the air collecting hole 6301 into the air collecting ring 63 and the air outlet sleeve 65. When it enters the air outlet groove 502, the airflow is filtered by the dust removal filter element 503. The dust in the airflow adheres to the dust removal filter element 503, and the airflow, which has been restored to a certain degree of cleanliness, enters the air inlet pipe 10 through the air outlet groove 502. Then, it is delivered to the air outlet pipe 9 again by the air pump 8 for cleaning the lens 2.

[0041] Please see Figure 3 A pad 11 is fixedly connected to the upper edge of the projector body 1. The pad 11 is located directly above the lens 2, and the airflow screen 6 is located above the pad 11. When the airflow screen 6 is moved to the upper part of the projector body 1, the pad 11 supports the airflow screen 6, making it less likely for the airflow screen 6 to come into contact with the upper part of the projector body 1 and to avoid dust accumulation on its upper part. On the other hand, the pad 11 also acts as a stop and position for the bottom rod 7, keeping the bottom rod 7 in a suspended state. When the airflow screen is lowered again... When the airflow screen 6 is in use, the gravity of the base rod 7 allows the airflow screen 6 to hang down smoothly. The lower end of the projector body 1 is fixedly connected to the positioning plate 12. The outer surfaces of the positioning plate 12 and the base rod 7 are coated with a magnetic coating. Through the magnetic attraction between the base rod 7 and the positioning plate 12, after the airflow screen 6 hangs down, the inner surface of the airflow screen 6 can come into close contact with the surface of the projector body 1 under the action of the base rod 7. When this application is not in use, the airflow screen 6 effectively seals and isolates the lens 2 from external dust.

[0042] The application covers the outside of the lens 2 by the air curtain 6 in the sagging state, can play an effective closing, isolation effect of external dust to the lens 2, and before using the projector body 1, the air curtain 6 keeps the closed state of the lens 2, through the two-way flow of air on the air curtain 6, on the one hand, the air is sprayed to the surface of the lens 2 in a ring-shaped dispersion state, and the surface dust is blown away, on the other hand, the gas with dust around the lens 2 is backflowed to the air curtain 6, and the lens 2 is blown away again after purification, compared with the prior art, the application provides a dust prevention and simple cleaning means for the LCD projector lens at high altitude, effectively reduces the frequency of personnel high cleaning, and reduces the risk of personnel high cleaning.

[0043] The second embodiment is as follows:

[0044] The embodiment is based on the embodiment 1, and the connection mode of the electric push rod 4, the air outlet pipe 9 and the air inlet pipe 10 with the air guide horizontal rod 5 is limited: combined Figure 2 And Figure 7 The end of the air outlet pipe 9 is internally screwed with the air inlet groove 501, the end of the air inlet pipe 10 is internally screwed with the air outlet groove 502, combined Figure 8 One end of the electric push rod 4 away from the top plate 3 is fixedly connected with a screw rod 401, the side end of the air guide horizontal rod 5 is provided with a T-shaped joint 504, the T-shaped end of the T-shaped joint 504 penetrates through the air guide horizontal rod 5 and is rotationally connected in the air guide horizontal rod 5, the open end of the T-shaped joint 504 is screwed with the outer end of the screw rod 401, through the rotation of the T-shaped joint 504 in the air guide horizontal rod 5, the T-shaped joint 504 is conveniently screwed on the outer end of the screw rod 401.

[0045] Through the above screw connection mode, the detachable installation of the air guide horizontal rod 5 is realized, that is, the disassembly of the air curtain 6 is realized, when the air curtain 6 is blocked outside the lens 2 for a long time, the air curtain 6 will also be attached with a large amount of dust, at this time, the air curtain 6 can be disassembled and cleaned, and a new air curtain 6 can be installed on the projector body 1.

[0046] The third embodiment is as follows:

[0047] The embodiment is based on the embodiment 2, and the water tank 13 for secondary purification of air is additionally arranged, so that the cleanliness of the air used for cleaning the lens 2 is further ensured, and the specific arrangement is as follows: please refer to Figure 9 The upper end of the projector body 1 is fixedly connected with the water tank 13, the water tank 13 internally contains clean water, please refer to Figure 8The air outlet pipe 9 is fixed through a pair of side ends of the water tank 13 and extends into the inside of the cleaning water, and the two connection positions of the air outlet pipe 9 with the water tank 13 are located on the upper side of the cleaning water. The air outlet pipe 9 is provided with a ventilation area composed of a plurality of uniformly distributed mesh holes 901 and located on the inside of the water tank 13. The side of the ventilation area close to the air pump 8 is lower than the liquid level of the cleaning water, and the side of the ventilation area away from the air pump 8 is higher than the liquid level of the cleaning water.

[0048] In the embodiment 1, the gas with dust is filtered and purified by the dust removal filter element 503 when passing through the air outlet groove 502, so that the airflow is restored to a certain degree of cleanliness, and then is transmitted into the air outlet pipe 9 for blowing the lens 2. However, the purification effect of the dust removal filter element 503 on the airflow is limited. Therefore, in order to further improve the cleaning effect on the lens 2, the water tank 13 is provided for the airflow to provide a second purification effect on the basis of the dust removal filter element 503, and the specific implementation is as follows:

[0049] As shown in Figure 10 , since part of the mesh holes 901 are located in the inside of the cleaning water, the cleaning water enters the inside of the air outlet pipe 9 through the mesh holes 901. When the gas is transmitted to the ventilation area where the mesh holes 901 are located, the gas enters the cleaning water, and then is overflowed outward through part of the mesh holes 901 in the cleaning water. The dust ions in the gas dissolve in the water to realize secondary purification. The purified gas is overflowed from the surface of the cleaning water, enters the inside of the air outlet pipe 9 through the mesh holes 901 exposed on the outside of the cleaning water, and is transmitted into the airflow curtain 6 for blowing the lens 2.

[0050] In addition, the upper end of the water tank 13 is provided with a water inlet, and a sealing plug is threadedly connected in the inside of the water inlet. In this embodiment, in combination with the settings of the dust removal filter element 503 and the water tank 13, a convenient manual cleaning mode is also provided for the lens 2. The dust removal filter element 503 can be wound by a textile fiber gauze with good filtering performance, such as polypropylene fiber and defatted cotton fiber. The specific manual cleaning is as follows:

[0051] When the application is used for long-term suspension in high altitude, and the cleaning effect cannot meet the clarity by the airflow blowing mode of the embodiment 1 during the period without manual cleaning by personnel, in this case, personnel need to use a climbing device for viewing and manual cleaning. In general, the cleaning personnel need to carry cleaning tools for climbing operation, which has certain inconvenience and danger.

[0052] However, in this embodiment, the cleaning personnel can not need to carry cleaning tools when climbing, such as Figure 11 and Figure 12As shown, when the personnel reaches the height where the projector body 1 is located, the air guide crossbar 5 and the air inlet pipe 10 can be manually loosened and separated, the dust removal filter element 503 is taken out and unfolded into a cloth shape, then the water inlet of the water tank 13 is opened, the cloth-shaped dust removal filter element 503 is placed in the water tank 13 to be wetted, and the lens 2 surface can be manually wiped and cleaned through the wetted dust removal filter element 503, that is, the manual cleaning process of the lens 2 can be realized without carrying cleaning tools, the inconvenience and danger of personnel climbing are reduced, and after cleaning, a new dust removal filter element 503 is placed in the air outlet groove 502, and the air inlet pipe 10 is connected to the air outlet groove 502.

[0053] In combination with the current actual demand, the above-mentioned embodiments adopted by the present application are not limited to the above, various changes made within the knowledge range of those skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A high-definition LCD projector with a self-cleaning lens module, comprising a projector body (1) and a lens (2) fixedly connected to the side of the projector body (1), characterized in that: The projector body (1) is fixedly connected to a top plate (3) at the upper end. An electric push rod (4) is fixedly connected to the outer end of the top plate (3). A dust removal curtain is connected to the telescopic end of the electric push rod (4). The dust removal curtain includes an air guide bar (5) connected to the electric push rod (4). An airflow screen (6) is fixedly connected to the outer end of the air guide bar (5). The airflow screen (6) hangs vertically on the side of the projector body (1) and is located outside the lens (2). A bottom rod (7) is fixedly connected to the lower end of the airflow screen (6). An air pump (8) is also fixedly connected to the upper end of the projector body (1). An air inlet pipe (10) and an air outlet pipe (9) are fixedly connected to the air inlet end and the air outlet end of the air pump (8), respectively. The two ends of the air outlet pipe (9) and the air inlet pipe (10) are respectively connected to the two ends of the air guide bar (5). The airflow curtain (6) includes a waterproof cloth (61) fixedly connected between the air guide crossbar (5) and the bottom bar (7). The waterproof cloth (61) is fixedly connected to a diffuser ring (62), a collecting ring (63), an air inlet sleeve (64), and an air outlet sleeve (65) at one end near the lens (2). The diffuser ring (62) surrounds the outside of the collecting ring (63) with a notched ring structure. One end of the air inlet sleeve (64) is fixedly connected to and communicates with the diffuser ring (62). One end of the air outlet sleeve (65) passes through the notch of the diffuser ring (62) and is fixedly connected to and communicates with the collecting ring (63). The outer end of the diffuser ring (62) is provided with a plurality of evenly distributed diffuser holes (6201). The outer end of the collecting ring (63) is provided with a plurality of evenly distributed collecting holes (6301). The air guide crossbar (5) has an air inlet groove (501) at one end near the air outlet pipe (9). The end of the air inlet sleeve (64) away from the air dispersing ring (62) is fixedly inserted through the air guide crossbar (5) and communicates with the air inlet groove (501). The end of the air guide crossbar (5) near the air inlet pipe (10) has an air outlet groove (502). The end of the air outlet sleeve (65) away from the air collecting ring (63) is fixedly inserted through the air guide crossbar (5) and communicates with the air outlet groove (502).

2. A high-definition LCD projector with self-cleaning lens module according to claim 1, characterized in that: A dust removal filter element (503) is placed inside the air outlet slot (502).

3. A high-definition LCD projector with a self-cleaning lens module according to claim 1, characterized in that: A pad (11) is fixedly connected to the upper edge of the projector body (1). The pad (11) is located directly above the lens (2), and the airflow screen (6) is located above the pad (11).

4. A high-definition LCD projector with self-cleaning lens module according to claim 1, characterized in that: The lower end of the projector body (1) is fixedly connected to a positioning plate (12), and the outer surfaces of the positioning plate (12) and the base rod (7) are coated with a magnetic coating.

5. A high-definition LCD projector with self-cleaning lens module according to claim 1, characterized in that: A water tank (13) is fixedly connected to the upper end of the projector body (1). The water tank (13) contains clean water. The air outlet pipe (9) is fixedly connected through a pair of side ends of the water tank (13) and extends into the clean water.

6. A high-definition LCD projector with self-cleaning lens module according to claim 5, characterized in that: The vent pipe (9) is provided with a ventilation area consisting of multiple evenly distributed mesh holes (901) located inside the water tank (13). The side of the ventilation area near the air pump (8) is lower than the liquid level of the clean water, and the side of the ventilation area away from the air pump (8) is higher than the liquid level of the clean water.

7. A high-definition LCD projector with a self-cleaning lens module according to claim 5, characterized in that: The water tank (13) has a water inlet at the top, and the water inlet is internally threaded with a sealing plug.

8. A high-definition LCD projector with self-cleaning lens module according to claim 1, characterized in that: The end of the air outlet pipe (9) is threadedly connected to the inside of the air inlet groove (501), the end of the air inlet pipe (10) is threadedly connected to the inside of the air outlet groove (502), the end of the electric push rod (4) away from the top plate (3) is fixedly connected to a screw rod (401), the side end of the air guide crossbar (5) is provided with a T-shaped connector (504), the T-shaped end of the T-shaped connector (504) passes through the air guide crossbar (5) and is rotatably connected inside it, and the open end of the T-shaped connector (504) is threadedly connected to the outer end of the screw rod (401).

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