Display device for mathematical modeling teaching

Abstract

The invention discloses a display device for mathematical modeling teaching, and relates to the technical field of holographic display, the display device comprises a base, the top of the base is fixedly provided with a stereo projection table, the top of the stereo projection table is fixedly provided with an imaging mirror, the top of the imaging mirror is provided with a ceiling, and the top of the ceiling is provided with a display screen. An auxiliary projection mechanism is arranged at the bottom of the ceiling; the auxiliary projection mechanism comprises an isolation unit, the auxiliary projection mechanism further comprises a light curtain unit, and the auxiliary projection mechanism further comprises a demagnetization unit. According to the display device for mathematical modeling teaching, by arranging the isolation unit, projection picture flickering or color distortion caused by temperature change can be avoided; the joint isolation of the two air curtains can effectively prevent dust, insects and other pollutants from entering, the refractive index of electromagnetic waves is changed, the interference of part of electromagnetic waves on the stereoscopic projection table can be reduced, and the cleaning effect of reducing dust in a room can also be achieved.

Description

Technical Field

[0001] This invention relates to the field of holographic display technology, specifically to a display device for teaching mathematical modeling. Background Technology

[0002] A teaching display device is a device that uses stereoscopic projection to display images in three dimensions at the center of an imaging mirror. It is mainly used in teaching demonstrations, digital exhibition halls, outdoor exhibitions, and other environments to present exhibits in a three-dimensional form, supporting 360-degree display without blind spots, and conveying more information through dynamic images.

[0003] In the use of a stereoscopic projection stand, the light source at the bottom of the stand needs to be activated to project an image upwards onto the top plane of the stand. The image is then refracted by an imaging mirror in the center of the stand, allowing it to be projected onto the center of the mirror and forming a three-dimensional exhibit. During this process, the resulting image is highly susceptible to interference from the external environment. This includes blurring caused by dust stirred up by people walking around and falling onto the imaging mirror, interference from external electromagnetic waves on the projection instrument, and interference from ambient light on the light source's imaging. All of these factors can lead to poor final imaging results and reduced projection quality.

[0004] By combining the above problems, we can see that the existing mathematical modeling teaching demonstration devices on the market are difficult to avoid the problems mentioned above when in use. Even if they can be solved, they require the use of external tools, which makes it impossible to achieve the desired effect. Therefore, we propose a mathematical modeling teaching demonstration device. Summary of the Invention

[0005] The purpose of this invention is to provide a demonstration device for teaching mathematical modeling, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a display device for teaching mathematical modeling, comprising a display device, the display device comprising a base, a stereoscopic projection platform fixedly mounted on the top of the base, an imaging mirror fixedly mounted on the top of the stereoscopic projection platform, a ceiling provided on the top of the imaging mirror, and an auxiliary projection mechanism provided at the bottom of the ceiling. The auxiliary projection mechanism includes an isolation unit, which is disposed on the top of the base and is used in conjunction with a stereoscopic projection table. The auxiliary projection mechanism also includes a light curtain unit, which is located at the bottom of the ceiling and is used in conjunction with the isolation unit.

[0007] Preferably, the isolation unit includes a first air curtain machine, the bottom of which is fixedly installed to the top of the base. A fixing plate is fixedly installed on one side of the first air curtain machine, a heat radiation plate is fixedly installed on one side of the fixing plate, and the other side of the fixing plate is fixedly installed to the surface of the stereoscopic projection stage. One side of the heat radiation plate is adapted to the top air outlet of the first air curtain machine. A second air curtain machine is fixedly installed at the bottom of the ceiling, the air outlet of the second air curtain machine is adapted to the air outlet of the first air curtain machine, and the air outlet of the second air curtain machine is adapted to the top of the stereoscopic projection stage.

[0008] Preferably, an air-guiding frame is fixedly installed at the bottom of the ceiling, and ventilation openings are provided on one side and at the bottom of the air-guiding frame. The bottom of the air-guiding frame is adapted to the top of the first air curtain machine, and a snap-on filter screen is installed at the ventilation opening on one side of the air-guiding frame.

[0009] Preferably, a support plate is fixedly connected to the inner wall of the air-guiding frame, a first rotary motor is fixedly installed on the top of the support plate, a transmission wheel is fixedly connected to the output shaft of the first rotary motor, multiple transmission wheels are provided, the outer surfaces of the multiple transmission wheels are all meshed with the same transmission belt, a rotating shaft is fixedly connected to the bottom of the multiple transmission wheels, a suction fan is fixedly connected to the bottom of the multiple rotating shafts, the bottom of the multiple suction fans is adapted to the top of the same first air curtain machine, and the outer surfaces of the multiple rotating shafts are rotatably connected to the inside of the same support plate.

[0010] Preferably, the light curtain unit includes a support column, the top of which is fixedly connected to the bottom of the ceiling, a mounting plate fixedly connected to the bottom of the support column, a light ring on the top of the mounting plate, the top of the light ring being fixedly installed to the bottom of the ceiling, a refractor on one side of the light ring, and multiple refractors, each of which has a bracket fixedly connected to one side, and one side of the bracket being fixedly connected to the support column.

[0011] Preferably, a stretchable light-blocking cloth is fixedly connected to the top of the mounting plate, and multiple stretchable light-blocking cloths are provided, with the bottom of each of the multiple stretchable light-blocking cloths being adapted to the bottom of the refractor.

[0012] Preferably, a second rotary motor is fixedly installed on the top of the mounting plate, and a blower fan is fixedly connected to the top of the second rotary motor. The top of the blower fan is adapted to the bottom of the light ring, and a protective frame is provided on the outer surface of the blower fan. The bottom of the protective frame is fixedly connected to the top of the mounting plate.

[0013] Preferably, the auxiliary projection mechanism further includes a demagnetizing unit, which is located at the bottom of the ceiling and is used in conjunction with the isolation unit.

[0014] Preferably, the demagnetizing unit includes a high-voltage generator, one side of which is fixedly installed with a bracket, and the other side of which is fixedly installed with a needle-shaped electrode. A guide plate is provided at the bottom of the needle-shaped electrode, and the bottom of the guide plate is fixedly installed with the top of the interior of the stereoscopic projection stage. A mixing air vent is provided on one side of the stereoscopic projection stage.

[0015] Preferably, multiple guide plates and mixing ports are provided, and one side of each of the multiple mixing ports is adapted to the top of the first air curtain machine.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting up an isolation unit, can avoid projected image flickering or color distortion caused by temperature changes. The combined isolation of the two air curtains can effectively block pollutants such as dust and insects from entering. At the same time, the air inside the external hot air curtain expands due to heat, its density decreases, and the medium becomes rarefied, causing its refractive index to change. Due to the change in refractive index, electromagnetic waves directed inward, i.e. towards the stereoscopic projection table, change their propagation direction, which can reduce some electromagnetic wave interference to the stereoscopic projection table and also achieve a cleaning effect that reduces dust in the room. This invention provides different solutions for dark and bright environments by setting up a light curtain unit. In dark environments, it provides light while avoiding the influence of its own light on the stereoscopic projection stage. In bright environments, it projects an overlapping area of ​​light through a refracting mirror, interfering with external light and reducing the brightness of the overlapping area. This improves the visual effect of the stereoscopic projection in the imaging mirror for people standing near the area. Furthermore, it provides a stretchable light-blocking cloth so that when the stereoscopic image projected by the imaging mirror is large, the area illuminated by the light ring can be reduced, thus avoiding interference with the imaging in the imaging mirror. This invention, by setting up a demagnetizing unit, allows positive and negative ions to move downwards together in the airflow, amplifying their adsorption of static electricity and their influence on electromagnetic wave scattering. It can neutralize static electricity through positive and negative ions, thereby scattering electromagnetic waves and further reducing the impact of the external environment on the stereoscopic projection stage. At the same time, when combined with an air curtain, the resulting ion cold air curtain can serve as an auxiliary to the hot air curtain to further isolate the effects of electromagnetic waves. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the auxiliary projection mechanism of the present invention; Figure 3 This is a schematic diagram of the isolation unit portion of the present invention; Figure 4 This is a partial cross-sectional view of the isolation unit of the present invention; Figure 5 For the present invention Figure 4Enlarged view of point A; Figure 6 This is a top view of the light curtain unit structure of the present invention; Figure 7 This is a bottom view schematic diagram of the light curtain unit of the present invention; Figure 8 This is a schematic diagram of light refraction in the lamp ring of the present invention; Figure 9 This is an exploded structural diagram of the demagnetizing unit of the present invention.

[0018] In the diagram: 1. Display device; 11. Base; 12. Stereoscopic projection platform; 13. Imaging mirror; 14. Ceiling; 2. Auxiliary projection mechanism; 21. Isolation unit; 2101. First air curtain machine; 2102. Fixing plate; 2103. Heat radiation plate; 2104. Air intake frame; 2105. Clip-on filter screen; 2106. First rotary motor; 2107. Transmission belt; 2108. Transmission wheel; 2109. Rotating shaft; 2110. Suction fan; 2111. Support plate; 2112. Second air curtain machine; 22. Light curtain unit; 2201. Support column; 2202. Mounting plate; 2203. Bracket; 2204. Refractor; 2205. Lamp ring; 2206. Stretchable blackout cloth; 2207. Protective frame; 2208. Second rotary motor; 2209. Blowing fan; 23. Demagnetizing unit; 2301. High voltage generator; 2302. Needle electrode; 2303. Guide plate; 2304. Mixing air outlet. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-9 The present invention provides a technical solution: a display device for teaching mathematical modeling, including a display device 1, the display device 1 including a base 11, a stereoscopic projection table 12 fixedly installed on the top of the base 11, an imaging mirror 13 fixedly installed on the top of the stereoscopic projection table 12, a ceiling 14 provided on the top of the imaging mirror 13, and an auxiliary projection mechanism 2 provided at the bottom of the ceiling 14. The auxiliary projection mechanism 2 includes an isolation unit 21, which is located on the top of the base 11 and is used in conjunction with the stereoscopic projection table 12.

[0021] As a further definition of the auxiliary projection mechanism 2 of the present invention, the isolation unit 21 includes a first air curtain machine 2101. The bottom of the first air curtain machine 2101 is fixedly installed on the top of the base 11. A fixing plate 2102 is fixedly installed on one side of the first air curtain machine 2101, and a heat radiation plate 2103 is fixedly installed on one side of the fixing plate 2102. The other side of the fixing plate 2102 is fixedly installed on the surface of the stereoscopic projection stage 12. One side of the heat radiation plate 2103 is adapted to the top air outlet of the first air curtain machine 2101. A second air curtain machine 2112 is fixedly installed at the bottom of the ceiling 14. The air outlet of the second air curtain machine 2112 is adapted to the air outlet of the first air curtain machine 2101 and the top of the stereoscopic projection stage 12. The first air curtain machine 2101 generates an air curtain above, separating the stereoscopic projection stage 12 and the imaging mirror 13. The air curtain is surrounded by multiple air curtains at its center. The hot area generated by the heat radiation plate 2103 is mixed with the airflow of the first air curtain machine 2101, turning the air curtain into a hot air curtain. At the same time, the second air curtain machine 2112 generates an air curtain below. The cold air curtain generated by the second air curtain machine 2112 is located between the stereoscopic projection stage 12 and the hot air curtain. It is used to prevent the hot air curtain from heating the area inside the stereoscopic projection stage 12, avoiding interference and preventing the projected image from flickering or color distortion due to temperature changes. The combined isolation of the two air curtains can effectively block dust, insects and other pollutants from entering. At the same time, the air inside the external hot air curtain expands when heated, the density decreases and the medium becomes rarefied, which changes its refractive index. Due to the change in refractive index, the electromagnetic waves inward, i.e. towards the stereoscopic projection stage 12, change their propagation direction, which can reduce some of the electromagnetic waves' interference with the stereoscopic projection stage 12. A draft frame 2104 is fixedly installed at the bottom of the ceiling 14. Ventilation openings are provided on one side and at the bottom of the draft frame 2104. The bottom of the draft frame 2104 is adapted to the top of the first air curtain machine 2101. A snap-fit ​​filter screen 2105 is installed at the ventilation opening on one side of the draft frame 2104. A support plate 2111 is fixedly connected to the inner wall of the air-guiding frame 2104. A first rotary motor 2106 is fixedly installed on the top of the support plate 2111. A transmission wheel 2108 is fixedly connected to the output shaft of the first rotary motor 2106. Multiple transmission wheels 2108 are provided. The outer surfaces of multiple transmission wheels 2108 are all meshed with the same transmission belt 2107. A rotating shaft 2109 is fixedly connected to the bottom of multiple transmission wheels 2108. A suction fan 2110 is fixedly connected to the bottom of multiple rotating shafts 2109. The bottom of multiple suction fans 2110 is adapted to the top of the same first air curtain machine 2101. The outer surfaces of multiple rotating shafts 2109 are rotatably connected to the inside of the same support plate 2111.

[0022] The specific implementation of this embodiment is as follows: When a display is required, the stereoscopic projection stage 12 is opened to generate a stereoscopic projection inside the imaging mirror 13. The first air curtain machine 2101 and the heat radiation plate 2103 are turned on to locally heat the top of the first air curtain machine 2101 and gradually raise the air curtain temperature to a hot air curtain state. The second air curtain machine 2112 is started, and the cold air curtain and the hot air curtain are parallel. The hot air curtain projected by the first air curtain machine 2101 is vertically upward and reaches the position of the ceiling 14. At this time, the hot air curtain enters the interior of the air guide frame 2104 through the air vents and its own hollow structure, and enters the interior from the bottom of the air guide frame 2104. Then it flows out from the other side of the air guide frame 2104. After being filtered by the snap-on filter 2105, the dust brought up by the hot air curtain during the movement is absorbed inside. The airflow escapes from the position parallel to the ceiling 14. At the same time, the first rotary motor 2106 is turned on to drive the transmission wheel 2108 to rotate, so that the transmission belt 2107 connects to the drive wheel 2108. Multiple drive wheels 2108 rotate together. At this time, the drive wheels 2108 are connected to the rotating shaft 2109 at their bottom and rotate. The suction fan 2110 draws air upward from the bottom position, that is, it draws the airflow from the position of the hot air curtain into the air guide frame 2104. The parallel isolation of the double air curtain can avoid the flickering or color distortion of the projected image caused by temperature changes. The joint isolation of the two air curtains can effectively block the entry of pollutants such as dust and insects and reduce the influence of electromagnetic waves. At the same time, the upward hot air curtain will carry dust in the process of rising. The dust will also be completely adsorbed by the snap-on filter 2105, achieving the cleaning effect of reducing dust in the room. At the same time, it can avoid the problem of collision and chaotic airflow caused by the irregular escape of the hot air curtain after rising. The guidance of the air guide frame 2104 and the adsorption of the suction fan 2110 can guide the hot airflow of the hot air curtain out in a regular manner, accelerate the escape speed of the hot airflow, and avoid the problem of continuous swirling near the stereoscopic projection table 12, causing the temperature of that local area to rise rapidly.

[0023] Example 2: Please refer to Figures 1-9 The present invention provides a technical solution: a demonstration device for teaching mathematical modeling. The present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0024] As a further limitation of the auxiliary projection mechanism 2 of the present invention, the auxiliary projection mechanism 2 also includes a light curtain unit 22, which is disposed at the bottom of the ceiling 14 and is used in conjunction with the isolation unit 21. The light curtain unit 22 includes a support column 2201, the top of which is fixedly connected to the bottom of the ceiling 14. A mounting plate 2202 is fixedly connected to the bottom of the support column 2201. A light ring 2205 is mounted on the top of the mounting plate 2202. The top of the light ring 2205 is fixedly mounted to the bottom of the ceiling 14. A refractor 2204 is mounted on one side of the light ring 2205. Multiple refractors 2204 are provided, and a bracket 2203 is fixedly connected to one side of each refractor 2204. One side of the bracket 2203 is fixedly connected to the support column 2201. The support column 2201 at the bottom of the ceiling 14 provides initial light blocking to the mounting plate 2202 at the top of the imaging mirror 13. The light ring 2205 serves as the light source, projecting light to the outside. When the ambient environment is dark, the light ring 2205 can be used as a light source to illuminate the surrounding area, and the mounting plate 2202 can prevent the top light from being projected into the inside of the imaging mirror 13, thereby enhancing the imaging effect of the stereoscopic projection stage 12. When the ambient environment is bright, the light ring 2205, through the refraction of the refracting mirror 2204 and the blocking of the mounting plate 2202, projects an overlapping light area within the original light source coverage area. When there is an angle difference between the external light and the overlapping light under refraction, the brightness of the overlapping area will decrease, thereby reducing the influence of the external light on the light within the range refracted by the refracting mirror 2204, which in turn reduces the influence on the light of the stereoscopic projection stage 12 within its coverage area. This reduces the interference of ambient light on the light source imaging and further improves the imaging clarity. A stretchable light-blocking cloth 2206 is fixedly connected to the top of the mounting plate 2202. Multiple stretchable light-blocking cloths 2206 are provided, and the bottom of each stretchable light-blocking cloth 2206 is adapted to the bottom of the refractor 2204. A second rotary motor 2208 is fixedly installed on the top of the mounting plate 2202. A blower fan 2209 is fixedly connected to the top of the second rotary motor 2208. The top of the blower fan 2209 is adapted to the bottom of the light ring 2205. A protective frame 2207 is provided on the outer surface of the blower fan 2209. The bottom of the protective frame 2207 is fixedly connected to the top of the mounting plate 2202.

[0025] The specific implementation of this embodiment is as follows: The light ring 2205 provides different solutions for dark and bright environments. In dark environments, it provides illumination while avoiding the influence of its own light on the stereoscopic projection platform 12. In bright environments, the refraction mirror 2204 projects an overlapping light area through refraction, interfering with external light and reducing the brightness of the overlapping area. This improves the stereoscopic projection visual effect on the imaging mirror 13 for people standing near this area. However, in dark environments, when the light ring 2205 provides illumination, the large size of the stereoscopic image projected by the stereoscopic projection platform 12 means that the mounting plate 2202 alone cannot adequately prevent upper light from affecting the lower image. In this case, the stretchable blackout cloth 220 is opened. 6. At this time, the stretchable blackout cloth 2206 rises, reducing the area illuminated by the lamp ring 2205 and avoiding interference with the imaging inside the imaging mirror 13. At the same time, the stretchable blackout cloth 2206 itself is parallel to the two air curtains. The rising stretchable blackout cloth 2206 also prevents the air curtain from escaping to the top of the stereoscopic projection stage 12 during movement, thus preventing the formation of an air vortex at its bottom. When the stretchable blackout cloth 2206 is not in use, the second rotary motor 2208 is activated, and the blower fan 2209 guides the escaping air to the upward position. After colliding with the center of the ceiling 14, the air diffuses outward and merges with the air curtain projected downward by the second air curtain machine 2112, thus avoiding the problem of unstable air curtain formation.

[0026] Example 3: Please refer to Figures 1-9 The present invention provides a technical solution: a demonstration device for teaching mathematical modeling. The present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0027] As a further limitation of the auxiliary projection mechanism 2 of the present invention, the auxiliary projection mechanism 2 also includes a demagnetizing unit 23, which is disposed at the bottom of the ceiling 14 and is used in conjunction with the isolation unit 21. The demagnetizing unit 23 includes a high-voltage generator 2301. One side of the high-voltage generator 2301 is fixedly installed with the bracket 2203, and the other side of the high-voltage generator 2301 is fixedly installed with a needle-shaped electrode 2302. A guide plate 2303 is provided at the bottom of the needle-shaped electrode 2302. The bottom of the guide plate 2303 is fixedly installed with the top inside the stereoscopic projection stage 12. A mixing air vent 2304 is opened on one side of the stereoscopic projection stage 12. With the establishment of the demagnetizing unit 23, the high-voltage generator 2301 and the needle-shaped electrode 2302 can lose or gain electrons in the air molecules to form positive and negative ions. The positive and negative ions neutralize static electricity and scatter electromagnetic waves, further reducing the influence of the external environment on the stereoscopic projection stage 12. Multiple guide plates 2303 and mixing ports 2304 are provided, and one side of each mixing port 2304 is adapted to the top of the first air curtain machine 2101.

[0028] The specific implementation of this embodiment is as follows: The high-voltage generator 2301 and needle electrode 2302 are activated in a low-pressure environment. A high-voltage electric field causes air molecules to lose or gain electrons, forming positive and negative ions. These ions move naturally outward with the airflow. A cold air curtain generated by the continuously operating second air curtain machine 2112 carries the ions downward along with the airflow, increasing their adsorption of static electricity and their influence on electromagnetic wave scattering. The resulting ion cold air curtain can serve as an auxiliary to the hot air curtain, further isolating the effects of electromagnetic waves. Simultaneously, the ion cold air curtain descends vertically into the interior of the stereoscopic projection stage 12, and then passes through the guide plate 23... After being guided, the airflow emerges from the opening of the mixing vent 2304. The airflow rises after mixing with the external hot air curtain, and is blown outward together after being guided by the air intake frame 2104. At the same time, the lifespan of positive and negative ions is usually 4-5 minutes in clean air, and they generate heat energy during neutralization. The heat energy airflow after neutralization of ions emerges from the mixing vent 2304 and rises together with the airflow of the hot air curtain. This can prevent the cold air curtain itself and the position of the stereoscopic projection stage 12 from continuously heating up, keeping the interior at a normal temperature and avoiding affecting the imaging. At the same time, it can neutralize static electricity and further isolate electromagnetic waves, making the imaging clearer.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A presentation device for teaching mathematical modeling, comprising a presentation device (1), characterized in that: The display device (1) includes a base (11), the top of the base (11) is fixedly installed with a stereoscopic projection table (12), the top of the stereoscopic projection table (12) is fixedly installed with an imaging mirror (13), the top of the imaging mirror (13) is provided with a ceiling (14), the bottom of the ceiling (14) is provided with an auxiliary projection mechanism (2); The auxiliary projection mechanism (2) includes an isolation unit (21), the isolation unit (21) is arranged on the top of the base (11), and the isolation unit (21) is used in combination with the stereoscopic projection table (12); The auxiliary projection mechanism (2) further includes a light curtain unit (22), the light curtain unit (22) is arranged on the bottom of the ceiling (14), and the light curtain unit (22) is used in combination with the isolation unit (21).

2. The display device for teaching mathematical modeling according to claim 1, characterized in that: The isolation unit (21) includes a first air curtain machine (2101), the bottom of the first air curtain machine (2101) is fixedly installed on the top of the base (11), one side of the first air curtain machine (2101) is fixedly installed with a fixed plate (2102), one side of the fixed plate (2102) is fixedly installed with a heat radiation plate (2103), the other side of the fixed plate (2102) is fixedly installed on the surface of the stereoscopic projection table (12), one side of the heat radiation plate (2103) is matched with the top air outlet of the first air curtain machine (2101), the bottom of the ceiling (14) is fixedly installed with a second air curtain machine (2112), the air outlet of the second air curtain machine (2112) is matched with the air outlet of the first air curtain machine (2101), and the air outlet of the second air curtain machine (2112) is matched with the top of the stereoscopic projection table (12).

3. The display device for teaching mathematical modeling according to claim 2, wherein: The bottom of the ceiling (14) is fixedly installed with an air guide frame (2104), the bottom and one side of the air guide frame (2104) are provided with air vents, the bottom of the air guide frame (2104) is matched with the top of the first air curtain machine (2101), and the air vent on one side of the air guide frame (2104) is installed with a clamping type filter screen (2105).

4. The display device for teaching mathematical modeling according to claim 3, wherein: The inner wall of the air guide frame (2104) is fixedly connected with a support plate (2111), the top of the support plate (2111) is fixedly installed with a first rotary motor (2106), the output shaft of the first rotary motor (2106) is fixedly connected with a transmission wheel (2108), a plurality of transmission wheels (2108) are provided, the outer surfaces of the plurality of transmission wheels (2108) are all engaged with the same transmission belt (2107), the bottoms of the plurality of transmission wheels (2108) are all fixedly connected with rotating shafts (2109), the bottoms of the plurality of rotating shafts (2109) are all fixedly connected with air suction fans (2110), the bottoms of the plurality of air suction fans (2110) are all matched with the top of the same first air curtain machine (2101), and the outer surfaces of the plurality of rotating shafts (2109) are all rotationally connected with the inner part of the same support plate (2111).

5. The display device for teaching mathematical modeling according to claim 1, wherein: The light curtain unit (22) includes a support column (2201), the top of which is fixedly connected to the bottom of the ceiling (14), and a mounting plate (2202) is fixedly connected to the bottom of the support column (2201). A light ring (2205) is provided on the top of the mounting plate (2202), and the top of the light ring (2205) is fixedly installed to the bottom of the ceiling (14). A refractor (2204) is provided on one side of the light ring (2205), and multiple refractors (2204) are provided. A bracket (2203) is fixedly connected to one side of each of the multiple refractors (2204), and one side of the bracket (2203) is fixedly connected to the support column (2201).

6. The display device for teaching mathematical modeling according to claim 5, wherein: The top of the mounting plate (2202) is fixedly connected with a stretchable light-blocking cloth (2206), and multiple stretchable light-blocking cloths (2206) are provided, the bottom of each of the multiple stretchable light-blocking cloths (2206) being adapted to the bottom of the refractor (2204).

7. The display device for teaching mathematical modeling according to claim 5, wherein: A second rotary motor (2208) is fixedly installed on the top of the mounting plate (2202). A blower fan (2209) is fixedly connected to the top of the second rotary motor (2208). The top of the blower fan (2209) is adapted to the bottom of the lamp ring (2205). A protective frame (2207) is provided on the outer surface of the blower fan (2209). The bottom of the protective frame (2207) is fixedly connected to the top of the mounting plate (2202).

8. The display device for teaching mathematical modeling according to claim 1, wherein: The auxiliary projection mechanism (2) also includes a demagnetizing unit (23), which is located at the bottom of the ceiling (14) and is used in conjunction with the isolation unit (21).

9. The display device for teaching mathematical modeling according to claim 8, wherein: The demagnetizing unit (23) includes a high-voltage generator (2301). One side of the high-voltage generator (2301) is fixedly installed with a bracket (2203). A needle-shaped electrode (2302) is fixedly installed on the other side of the high-voltage generator (2301). A guide plate (2303) is provided at the bottom of the needle-shaped electrode (2302). The bottom of the guide plate (2303) is fixedly installed with the top inside the stereoscopic projection stage (12). A mixing air inlet (2304) is opened on one side of the stereoscopic projection stage (12).

10. The display device for teaching mathematical modeling according to claim 9, wherein: The guide plate (2303) and the mixing air inlet (2304) are provided in multiple ways, and one side of each of the multiple mixing air inlets (2304) is adapted to the top of the first air curtain machine (2101).

Images