Teaching projection light source structure and projector

Abstract

The teaching projection light source structure comprises a projector body, a mounting frame, a light path adjusting disc, a cleaning assembly and a driving part, the mounting frame is fixedly connected to the top of the projector body, and an annular frame is fixedly connected to the left end of the mounting frame; the light path adjusting disc is rotationally connected to the left end of the annular frame and used in cooperation with the lens part of the projector. According to the teaching projection light source structure and the projector, a plurality of filter disc mounting grooves are formed in the light path adjusting disc, and a strong light brightening filter and a weak light brightening filter are arranged, so that the light path adjusting disc can be driven to rotate by utilizing the driving piece according to the intensity change of ambient light such as a classroom, and the corresponding filters are quickly switched; the problem that an existing projector is fuzzy in picture details under strong light and low in color deviation and contrast ratio under weak light is effectively solved, high-quality projection pictures can be stably provided under any complex light conditions, and the requirements of diversified teaching scenes are met.

Description

Technical Field

[0001] The invention relates to the technical field of projectors, and in particular to a teaching projection light source structure and a projector. Background Art

[0002] In the field of education and teaching, projectors are an indispensable device that can project images or videos onto the screen, providing teachers and students with an intuitive and rich way to display teaching resources. With the continuous advancement of educational informatization, the performance requirements for teaching projectors are also increasing.

[0003] Existing projectors have poor adaptability in different lighting environments. In low-light environments, although the projector image can be seen clearly, due to the uncertainty of ambient light interference, the image is prone to color deviation and reduced contrast, and cannot achieve the ideal visual effect; in strong light environments, the projector image will be obscured by the surrounding strong light, resulting in blurred image details and difficulty in meeting the needs of users. Whether it is a classroom in a teaching scenario or a conference room for a business meeting, the lighting conditions are complex and changeable, which makes it difficult for the projector to stably provide high-quality projection images.

[0004] Secondly, when analyzing specific content in the projected image, the projector also exposes obvious defects. Taking chemistry teaching as an example, chemical elements often have unique color characteristics. These colors are crucial for students to understand chemical principles and identify chemical reactions. However, existing projectors cannot highlight the corresponding colors when projecting some chemical elements, which makes it difficult for students to accurately obtain key information from the image, seriously affecting the teaching effect.

[0005] In view of this, a teaching projection light source structure and a projector are proposed. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a teaching projection light source structure and a projector, which solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a teaching projection light source structure and a projector, including a projector body, a mounting frame, an optical path adjustment disk, a cleaning component and a driving member; The mounting frame is fixedly connected to the top of the projector body, and a ring frame is fixedly connected to the left end of the mounting frame. The optical path adjustment disk is rotatably connected to the left end of the ring frame and is used in conjunction with the lens part of the projector. The cleaning assembly is arranged inside the cross bars at both ends of the mounting frame, and is used to clean the dust on the surface of the projector body. The driving member is arranged inside the top of the annular frame, and is used to drive the rotation of the optical path adjustment disk and the position of the cleaning assembly. The optical path adjustment disk includes a plurality of filter mounting slots opened on the side, a strong light brightening filter, a weak light dimming filter, a red filter and a blue filter arranged inside the filter mounting slots, and a protective cover arranged at the mounting slot for limiting the filter. A sealing member for preventing light leakage is provided on the side of the filter mounting slot away from the protective cover.

[0008] The present invention has the following beneficial effects: The teaching projection light source structure and projector are provided with a plurality of filter installation slots on the optical path adjustment disk, and equipped with a strong light brightening filter and a weak light dimming filter. According to the intensity change of ambient light such as the classroom, the optical path adjustment disk can be driven by a driving member to rotate, and the corresponding filter can be quickly switched, which effectively solves the problem of blurred picture details under strong light, color deviation and reduced contrast under weak light of the existing projector. No matter what complex light conditions are, high-quality projection pictures can be stably provided to meet the needs of diversified teaching scenes. A teaching projection light source structure and projector, wherein a red filter and a blue filter are arranged in the optical path adjustment disk. When a color deviation occurs in the projection image, the corresponding filter can be switched for correction according to different color deviation conditions by rotating the optical path adjustment disk. Especially when teaching involves content with high requirements for color accuracy, such as displaying the color characteristics of chemical elements in chemistry teaching, the corresponding colors can be highlighted, helping students to accurately obtain key information and significantly improving the teaching effect. A teaching projection light source structure and a projector, wherein a cleaning component is arranged inside the cross bars at both ends of a mounting frame, and includes a bent rod, bristles, an air inlet, a dust collecting cylinder and a fan, etc., and a driving member can drive a second gear rod to rotate through a gear, a gear rod and other structures while driving an optical path adjustment disk to rotate, so that the bent rod moves on the second gear rod, and the bristles are used to clean dust on the surface of the projector body, and at the same time, the fan sucks dust into the dust collecting cylinder through the air inlet, so as to keep the projector clean and reduce the influence of dust on the projection effect and equipment performance; The teaching projection light source structure and projector are provided with a cooling cylinder at the lens part of the projector body, and the coolant tank is connected to the cooling cylinder through a water outlet pipe. A water pump is used to circulate the coolant to take away the heat of the lens, so as to prevent the image quality from decreasing due to the increase of the lens temperature. In addition, the water outlet pipe is connected to a cleaning cover. When the filter needs to be cleaned, the coolant can be introduced into the cleaning cover to clean the filter by controlling the solenoid valve, so as to ensure the stable performance of the filter and extend the service life. The teaching projection light source structure and projector are provided with seals at the optical path adjustment disk and the filter installation groove, including a sealing block, a spring 1 and a sealing layer, which can effectively prevent light leakage and ensure the quality of the projection picture. The contact part between the cleaning cover and the protective cover is provided with a rubber ring and a spring 2. When cleaning the filter, the rubber ring cooperates with the groove of the protective cover to play a sealing role, prevent the leakage of the coolant, and protect the filter and the optical path adjustment disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the decomposition structure of the present invention; Figure 3 This is a schematic diagram of the back structure of the annular frame of the present invention; Figure 4 This is a schematic cross-sectional view of the annular frame of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the cleaning cover of the present invention; Figure 6 This is a schematic diagram of the rear view structure of the annular frame of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the bent rod of the present invention; Figure 8 This is a schematic diagram of the back structure of the optical path adjustment plate of the present invention; Fig. 9 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Fig.10 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0010] Among them, 1. Projector body; 2. Mounting frame; 3. Optical path adjustment plate; 4. Ring frame; 5. Filter installation slot; 6. Strong light brightening filter; 7. Weak light dimming filter; 8. Red filter; 9. Blue filter; 10. Protective cover; 11. Motor; 12. Gear rod; 13. Tooth pattern layer; 14. Adjustment wheel; 15. Adjustment rod; 16. Electric telescopic rod; 17. First gear rod; 18. Second gear rod; 19. Bending rod; 20. Brush; 21. Air inlet; 22. Dust collecting cylinder; 23. Fan; 24. Cooling cylinder; 25. Water outlet pipe 1; 26. Cleaning cover; 27. Water outlet pipe 2; 28. Coolant tank; 29. ​​Water outlet pipe 3; 30. Surrounding drainage chamber; 31. Water pump; 32. Water outlet pipe 4; 33. Solenoid valve 1; 34. Solenoid valve 2; 35. Sealing block; 36. Spring 1; 37. Sealing layer; 38. Rubber ring; 39. Groove; 40. Spring 2; 41. Filter cover. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] See also Figures 1 to 10 The present invention provides a teaching projection light source structure and a projector; the structure includes a projector body 1, a mounting frame 2, an optical path adjustment disk 3, a cleaning component and a driving member, wherein the mounting frame 2 is fixedly connected to the top of the projector body 1, and an annular frame 4 is fixedly connected to the left end of the mounting frame 2, and the optical path adjustment disk 3 is rotatably connected to the left end of the annular frame 4 and is used in conjunction with the lens part of the projector to adjust the light.

[0013] like Figure 1-2 As shown, when the projector body 1 and the mounting bracket 2 are installed, the lens part of the projector body 1 abuts against one side of the optical path adjustment disk 3, a threaded hole is opened on the upper surface of the projector body 1, and the bottom of the right end of the mounting bracket 2 and the back side of the annular frame 4 are connected to the threaded hole through bolts, thereby fixing the optical path adjustment disk 3.

[0014] The cleaning component is arranged inside the cross bars at both ends of the mounting frame 2, and is used to clean the dust on the surface of the projector body 1. The mounting frame 2 is arranged in an H shape, and a mounting hole is opened on the upper surface of the cross plate of the mounting frame 2, which is convenient for connection with external bracket equipment to facilitate the rapid installation of the projector equipment. The driving member is arranged inside the top of the annular frame 4, and is used to drive the optical path adjustment disk 3 to rotate and adjust the use position of the cleaning component; it is convenient to adjust its use position according to the heat dissipation of the projector equipment, and it is also convenient to clean the dust on its surface to maintain the heat dissipation effect.

[0015] The optical path adjustment disk 3 includes a plurality of filter mounting slots 5 opened on the side, a strong light brightening filter 6, a weak light dimming filter 7, a red filter 8 and a blue filter 9 arranged inside the filter mounting slot 5, and a protective cover 10 arranged at the mounting slot 5 for limiting the filter. A sealing member for preventing light leakage is provided on the side of the filter mounting slot 5 away from the protective cover 10.

[0016] like Figure 1-2 As shown, four circular filter installation grooves 5 of the same size are evenly opened on the side of the optical path adjustment disk 3, and corresponding filters are arranged in sequence inside. The diameter of the filter is smaller than the inner diameter of the filter installation groove 5, which is convenient for use with the lens part of the projector body 1. The circumference of the filter installation groove 5 is provided with a thread, and it is threadedly connected with the protective cover 10, which is convenient for the later disassembly and replacement of the internal filter.

[0017] The driving member includes a motor 11 fixedly connected to the side of the annular frame 4 close to the mounting frame 2, and a gear rod 12 arranged at the output end of the motor 11, the gear rod 12 extends to the inside of the annular frame 4, the circumferential portion of the optical path adjustment disk 3 is provided with a toothed layer 13, and is meshed with the gear at the left end of the gear rod 12, an adjusting wheel 14 is provided on the surface of the gear rod 12 close to the motor 11, an adjusting rod 15 is sleeved on the surface of the adjusting wheel 14, the top end of the adjusting rod 15 passes through a slideway opened at the top of the annular frame 4 and extends to the outside, an electric telescopic rod 16 is provided on the upper surface of the annular frame 4, and the output end of the electric telescopic rod 16 is fixedly connected to one side of the top end of the adjusting rod 15.

[0018] like Figure 3-4 As shown, starting the motor 11 can drive the gear rod 12 to rotate. Since the other end of the gear rod 12 is meshed and connected with the toothed layer 13 on the circumference of the optical path adjustment disk 3 through the gear, the optical path adjustment disk 3 is synchronously driven to rotate, so that the filter inside the filter installation slot 5 overlaps with the lens part of the projector body 1, which is convenient for realizing fast switching of different filters according to the usage scenario; Starting the electric telescopic rod 16 can drive the adjustment rod 15 to move to the right, and synchronously drive the adjustment wheel 14 to mesh with the first gear rod 17. At this time, when the gear rod 12 rotates, the first gear rod 17 and the second gear rod 18 are synchronously driven to rotate, and the curved rod 19 moves along the thread direction, and the dust on the surface of the projector body 1 is cleaned by the bristles 20 arranged on its surface. When the electric telescopic rod 16 is started again, the adjustment wheel 14 can be driven to separate from the first gear rod 17. At this time, when the optical path adjustment disk 3 is rotated, the curved rod 19 will not be affected, so it is convenient to adjust according to the use requirements; The bristles 20 are made of soft and elastic nylon material, which can effectively clean the dust on the surface of the projector body 1 without scratching the surface of the device. The fan 23 is started, and at this time, negative pressure is formed inside the dust collecting cylinder 22, and the dust swept by the bristles 20 is sucked into the dust collecting cylinder 22 through the air inlet 21, and is discharged after being filtered by the filter cover 41 at one end of the dust collecting cylinder 22, which can not only dissipate heat for the projector body 1, but also centrally process the dust on its surface to ensure the cleanliness of the surrounding environment; A first gear rod 17 for use with the adjusting wheel 14 is provided inside the annular frame 4, near the position of the adjusting wheel 14. A second gear rod 18 is rotatably connected inside the cross bars at both ends of the mounting frame 2. One end of the second gear rod 18 is meshedly connected to the bottom end of the first gear rod 17. The cleaning assembly includes a bent rod 19 threadedly connected to the surface of the second gear rod 18 and bristles 20 provided on one side of the bent rod 19 near the projector. An air inlet hole 21 is provided on the side of the bent rod 19 near the bristles 20. A dust collecting barrel 22 is provided at the end of the bent rod 19 away from the mounting frame 2. A fan 23 is provided inside the dust collecting barrel 22. A filter cover 41 is detachably connected to one end of the dust collecting barrel 22.

[0019] The part where the second gear rod 18 is connected to the first gear rod 17 is meshed and connected through a bevel gear, and the second gear rod 18 is a reciprocating screw rod, and a slideway is provided on the surface, and a pin is provided at the part where the bent rod 19 is connected to it. When the second gear rod 18 rotates, the bent rod 19 moves along the slideway on the surface of the reciprocating screw rod through the pin.

[0020] The inner wall of the filter cover 41 is provided with a thread that is compatible with the outer wall of the dust collecting barrel 22. The filter cover 41 is connected to the dust collecting barrel 22 by threaded connection, which is convenient for quickly cleaning the dust inside the dust collecting barrel 22 at a later time.

[0021] The lens part of the projector body 1 is connected to the mounting groove 5, and a cooling tube 24 is provided on the surface of the lens. A water outlet pipe 25 is provided on the top of the cooling tube 24. The other end of the water outlet pipe 25 passes through the center of the optical path adjustment disk 3 and is fixedly connected to a cleaning cover 26.

[0022] The cleaning hood 26 is arranged at a position close to the protective hood 10 along the first direction, and the bottom of the cleaning hood 26 is fixedly connected to a water outlet pipe 27, and the bottom of the projector body 1 is fixedly connected to a coolant tank 28, and the other end of the water outlet pipe 27 is fixedly connected to the surface of the coolant tank 28, and the bottom of the cooling cylinder 24 is fixedly connected to a water outlet pipe 3 29, and the other end of the water outlet pipe 3 29 passes through the inner bottom wall of the annular frame 4 and is fixedly connected to the side of the coolant tank 28. The cleaning hood 26 is concave and is connected to the water outlet pipe 1 25 and the water outlet pipe 2 27.

[0023] The cooling cylinder 24 is made of aluminum alloy with good thermal conductivity, which can quickly transfer the heat generated by the lens. When the water pump 31 is working, the coolant is pumped out from the coolant tank 28 and sent into the surrounding drainage cavity 30 through the outlet pipe three 29. The coolant flows in the surrounding drainage cavity 30, absorbs the heat generated by the lens, and then flows back to the coolant tank 28 from the outlet pipe two 27 through the outlet pipe one 25 and the outlet pipe four 32, thereby realizing the circulation and cooling of the coolant.

[0024] A surrounding drainage chamber 30 is provided inside the cooling cylinder 24, one end of the surrounding drainage chamber 30 is connected to the water outlet pipe 1 25, and the other end is connected to the water outlet pipe 3 29. A water pump 31 is provided at the end of the water outlet pipe 3 29 close to the coolant tank 28. A water outlet pipe 4 32 is fixedly connected to the surface of the water outlet pipe 1 25 close to the cleaning cover 26, and the other end of the water outlet pipe 4 32 is fixedly connected to the surface of the water outlet pipe 3 29 close to the cleaning cover 26. An end of the water outlet pipe 4 32 close to the water outlet pipe 1 25 and an end of the water outlet pipe 1 25 close to the cleaning cover 26 are respectively provided with a solenoid valve 1 33 and a solenoid valve 2 34.

[0025] When it is necessary to clean the optical filter on the optical path adjustment disk 3, the electromagnetic valve 1 33 is closed, and the electromagnetic valve 2 34 is opened. The coolant is drawn out from the coolant tank 28, and sent to the surrounding drainage cavity 30 through the outlet pipe 3 29, and then enters the interior of the cleaning cover 26 through the outlet pipe 1 25 to rinse the optical filter. The rinsed coolant flows back to the coolant tank 28 through the outlet pipe 2 27 to achieve the cleaning function of the optical filter. When the projector lens is continuously cooled, the solenoid valve 2 34 is closed and the solenoid valve 1 33 is opened. At this time, the coolant enters the water outlet pipe 4 32 after passing through the water outlet pipe 1 25, and then flows back to the interior of the coolant tank 28 through the water outlet pipe 2 27.

[0026] The sealing member includes a sealing block 35 disposed inside the optical path adjustment disk 3 and along the circumference of the filter installation groove 5. A spring 36 is disposed on one side of the sealing block 35, and a sealing layer 37 is fixedly connected on the other side. When the optical path adjustment disk 3 is rotated to the projector lens part, the sealing block 35 cooperates with the spring 36 and the sealing layer 37 to make the filter fit closely with the projector lens part, thereby preventing light leakage and maintaining the quality of the picture. like Figure 8 As shown, in order to keep the optical path adjustment disk 3 better aligned with the projector lens when rotating, T-shaped protrusions are provided on the inner wall and the edge of the sealing block 35, which can provide some buffer when rotating and reduce damage to the projector body 1.

[0027] A rubber ring 38 is clamped on one side of the cleaning cover 26 close to the protective cover 10, and a groove 39 for use with the rubber ring 38 is opened on the side of the protective cover 10. A spring 2 40 is fixedly connected to the other side of the rubber ring 38. When the filter is switched, the protective cover 10 rotates to the inner side of the cleaning cover 26, and the rubber ring 38 is buckled into the inside of the groove 39 with the cooperation of the spring 2 40, thereby avoiding leakage of the cleaning cover 26 when in use.

[0028] The motor 11, the electric telescopic rod 16, the fan 23, the water pump 31, and the solenoid valve mentioned above are all existing well-known technologies and are only cited here, and the specific structure is not described in detail.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0030] In the present invention, the working steps of the device are as follows: 1. Low-light environment: If the classroom or the use environment is dark, start the drive component, drive the gear rod 12 to rotate through the motor 11, and then rotate the optical path adjustment disk 3, switch the low-light reduction filter 7 to the working position that matches the projector lens, and improve the color accuracy and contrast of the picture; Strong light environment: When the light is strong, operate the driver in the same way to switch to the strong light brightening filter 6, so that the projected image is clear and the details are not covered; 2. When it is necessary to project a specific chemical element and highlight its color, operate the driving member to switch the red filter 8 or the blue filter 9 to the working position, so as to highlight the color of the corresponding element and facilitate students to obtain key information; 3. Start the cleaning assembly regularly, the electric telescopic rod 16 works, pushes the adjustment rod 15 to move, drives the adjustment wheel 14 and the first gear rod 17 to rotate, and then rotates the second gear rod 18, and the curved rod 19 moves along the slideway on its surface, and the surface of the projector body 1 is cleaned by the bristles 20, and the fan 23 works synchronously to suck the dust into the dust collecting cylinder 22. Clean the dust in the dust collecting cylinder 22 regularly, remove the filter cover 41, pour out the dust and then install it; 4. Start the water pump 31, close the solenoid valve 2 34, open the solenoid valve 1 33, and the coolant is drawn out from the coolant tank 28, and sent into the surrounding drainage cavity 30 through the outlet pipe 3 29, and then the coolant enters the outlet pipe 4 32 through the outlet pipe 1 25, and then flows back to the inside of the coolant tank 28 through the outlet pipe 2 27 to form a circulation, so as to continuously cool down the projector lens part to maintain the quality of the picture.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A teaching projection light source structure and a projector, characterized in that: It comprises a projector body (1), a mounting frame (2), an optical path adjustment disk (3), a cleaning component and a driving component; The mounting frame (2) is fixedly connected to the top of the projector body (1); an annular frame (4) is fixedly connected to the left end of the mounting frame (2); the optical path adjustment disk (3) is rotatably connected to the left end of the annular frame (4) and is used in conjunction with the lens portion of the projector; The cleaning assembly is arranged inside the cross bars at both ends of the mounting frame (2) and is used to clean dust on the surface of the projector body (1); the driving member is arranged inside the top of the annular frame (4) and is used to drive the optical path adjustment disk (3) to rotate and position the cleaning assembly; The optical path adjustment disk (3) comprises a plurality of filter installation slots (5) provided on the side, a strong light brightening filter (6), a weak light brightening filter (7), a red filter (8) and a blue filter (9) provided inside the filter installation slots (5), and a protective cover (10) provided at the installation slots (5) for limiting the position of the filters, and a sealing member for preventing light leakage is provided on a side of the filter installation slots (5) away from the protective cover (10).

2. The teaching projection light source structure and projector according to claim 1, characterized in that: The driving member comprises a motor (11) fixedly connected to a side of the annular frame (4) close to the mounting frame (2), and a gear rod (12) provided at the output end of the motor (11); a toothed layer (13) is provided at a circumferential portion of the optical path adjustment disk (3) and is meshedly connected to a gear at the left end of the gear rod (12).

3. The teaching projection light source structure and projector according to claim 2, characterized in that: An adjusting wheel (14) is provided on the surface of one end of the gear rod (12) close to the motor (11), an adjusting rod (15) is sleeved on the surface of the adjusting wheel (14), the top end of the adjusting rod (15) passes through a slideway provided at the top of the annular frame (4) and extends to the outside, an electric telescopic rod (16) is provided on the upper surface of the annular frame (4), and an output end of the electric telescopic rod (16) is fixedly connected to one side of the top end of the adjusting rod (15).

4. The teaching projection light source structure and projector according to claim 3, characterized in that: A first gear rod (17) for use with the adjusting wheel (14) is provided inside the annular frame (4) and near the adjusting wheel (14); a second gear rod (18) is rotatably connected inside the cross bars at both ends of the mounting frame (2); one end of the second gear rod (18) is meshedly connected with the bottom end of the first gear rod (17); The cleaning assembly comprises a bent rod (19) threadedly connected to the surface of the second gear rod (18) and bristles (20) arranged on one side of the bent rod (19) close to the projector; an air inlet hole (21) is provided on the side of the bent rod (19) close to the bristles (20); a dust collecting cylinder (22) is provided at one end of the bent rod (19) away from the mounting frame (2); a fan (23) is provided inside the dust collecting cylinder (22); and a filter cover (41) is detachably connected to one end of the dust collecting cylinder (22).

5. The teaching projection light source structure and projector according to claim 4, characterized in that: The lens portion of the projector body (1) is in communication with the mounting groove (5), and a cooling tube (24) is provided on the surface of the lens. A water outlet pipe (25) is provided on the top of the cooling tube (24). The other end of the water outlet pipe (25) passes through the center of the optical path adjustment disk (3) and is fixedly connected to a cleaning cover (26).

6. The teaching projection light source structure and projector according to claim 5, characterized in that: The cleaning cover (26) is arranged at a position close to the protective cover (10) along the first direction, the bottom of the cleaning cover (26) is fixedly connected to a water outlet pipe 2 (27), the bottom of the projector body (1) is fixedly connected to a coolant tank (28), the other end of the water outlet pipe 2 (27) is fixedly connected to the surface of the coolant tank (28), and the bottom of the cooling cylinder (24) is fixedly connected to a water outlet pipe 3 (29), the other end of the water outlet pipe 3 (29) passes through the inner bottom wall of the annular frame (4) and is fixedly connected to the side of the coolant tank (28).

7. A teaching projection light source structure and projector according to claim 6, characterized in that: A surrounding drainage chamber (30) is provided inside the cooling cylinder (24); one end of the surrounding drainage chamber (30) is connected to a water outlet pipe 1 (25), and the other end is connected to a water outlet pipe 3 (29); a water pump (31) is provided at one end of the water outlet pipe 3 (29) close to the coolant tank (28).

8. The teaching projection light source structure and projector according to claim 7, characterized in that: A water outlet pipe 4 (32) is fixedly connected to the surface of the water outlet pipe 1 (25) at one end near the cleaning cover (26), and the other end of the water outlet pipe 4 (32) is fixedly connected to the surface of the water outlet pipe 3 (29) at one end near the cleaning cover (26). An end of the water outlet pipe 4 (32) near the water outlet pipe 1 (25) and an end of the water outlet pipe 1 (25) near the cleaning cover (26) are respectively provided with a solenoid valve 1 (33) and a solenoid valve 2 (34).

9. The teaching projection light source structure and projector according to claim 8, characterized in that: The sealing member comprises a sealing block (35) arranged on the inner side of the optical path adjustment disk (3) and arranged along the circumference of the filter installation groove (5); a spring (36) is provided on one side of the sealing block (35) and a sealing layer (37) is fixedly connected on the other side.

10. A teaching projection light source structure and projector according to claim 9, characterized in that: A rubber ring (38) is clamped on one side of the cleaning cover (26) close to the protective cover (10), a groove (39) for use with the rubber ring (38) is provided on the side of the protective cover (10), and a second spring (40) is fixedly connected to the other side of the rubber ring (38).

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