Writing board with eye protection function

Abstract

The invention discloses a writing board with an eye protection function, which belongs to the technical field of environment-friendly teaching aids and teenager myopia prevention and control, and mainly comprises a blackboard, an electronic screen, tiny dust chalk and a blackboard purification dust collector, the blackboard has the characteristics of no glare and easiness in writing and erasing; the tiny dust chalk has the characteristics of no dust floating during writing and easiness in writing and erasing; the blackboard purifier main machine box body is connected with a blackboard brush head through a telescopic pipe according to the principles of vacuum mute dust collection, fine powder aggregation and centrifugal water film purification and is installed under a blackboard. The main machine has the advantages of being large in suction force, small in sound, high in plate surface cleanliness, high in purification precision, not prone to damage after fine dust PM2.5 is sucked and the like. Dust does not float during brushing, so that occupational diseases of teachers can be prevented; as the blackboard is brushed cleanly, the contrast effect of writing on the blackboard is good, eyes are not prone to fatigue, and myopia prevention and control are facilitated. The blackboard eraser has the advantages that occupational diseases of teachers can be prevented, myopia of students can be prevented, electronic products are prevented from being damaged by moisture when the blackboard is wiped with water, and the blackboard eraser is cost-saving and effective.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly teaching aids and juvenile myopia prevention and control, in particular to a writing board with eye protection function, which is mainly composed of a blackboard, an electronic screen, dust chalk (or a film-forming water-based pen), and a blackboard purification vacuum cleaner. Background Art

[0002] In the field of teaching equipment, with the rapid development of teaching modernization, informatization and dataization, although many progress has been made, there are still some problems that need to be solved. For example, the myopia rate of young students has increased sharply and remains high. After analyzing the reasons, it is generally recognized that it is mainly due to excessive reliance on electronic teaching products and whiteboard pens and water-soluble chalk blackboard teaching.

[0003] The existing technology is mainly proposed from the technical perspective of dust-free blackboards, which mainly solves the problem of dust floating when brushing the blackboard for teaching convenience. As for the prevention and control of myopia among teenagers, not much consideration has been given. Therefore, the problem of eye damage caused by existing technology has not been prevented before, and there is no good way to solve it. Therefore, the myopia rate of students has increased sharply and remains high.

[0004] The prior art does not have such a writing board with eye protection function when taking classes in a large classroom.

[0005] For example: The multifunctional writing board CN201520233453.9 for preventing myopia is used by students to control their sitting posture and the distance from their eyes to the small writing board. Its shortcomings include: it cannot solve the problem of how to protect the eyes with writing boards in large classrooms.

[0006] For example: use a traditional blackboard plus ordinary chalk plus an ordinary blackboard brush. Use ordinary chalk to write on the blackboard and use an ordinary blackboard brush to wipe it. It looks convenient and cheap. Disadvantages: dust will fly when wiping, and teachers are prone to occupational diseases. It is difficult to wipe clean if more than one-third of the board is covered.

[0007] The existing dust-free teaching aid technology is environmentally friendly and dust-free, but it does not protect the eyes.

[0008] For example, the advantage of using electronic products for teaching is that they are dust-free, but they are generally recognized to be harmful to the eyes. There are blue light removal technologies, such as anti-blue light films, which only solve a small part of the damage to the eyes caused by electronic products. There are still flicker, light radiation, and various rays that can damage the eyes.

[0009] For example, writing on a whiteboard with a whiteboard pen has the advantage of being dust-free. However, writing on a whiteboard with a water-based pen is difficult to achieve, and it is difficult to write Chinese characters well. The whiteboard has glare, which can easily cause students' eye fatigue and myopia. When writing on a whiteboard with a film-forming water-based pen, it is difficult to wipe it clean with an ordinary blackboard eraser.

[0010] For example: use water-soluble chalk to write on a blackboard or a green board with a PVC film. The advantage is that it is dust-free. But when you wipe it dry, it cannot be wiped clean, and you must use water to wash and wipe it. If you write too much, over time, and with less water, it will be more difficult to wipe it clean. After it dries, it will be gray, and the contrast effect of writing on the blackboard again will be poor, which can easily cause eye fatigue and myopia. At the same time, the moisture generated by a wet cloth and a water wiper is relatively harmful to adjacent metal electrical appliances or electronic products. It is well known that dust and moisture often cause computer crashes, blue screens and other malfunctions, and accelerate the aging of electronic products.

[0011] For example: the centrifugal powder collection double barrel vacuum eraser CN200820086203.7 is mainly used as the core equipment of the dust-free blackboard. The advantage is that it can brush more cleanly than the handheld vacuum, but not very clean. After wiping, it is always gray and hazy, and it has the disadvantages of loud noise and poor durability. This technology does not solve the common problems of the existing technology that the fine dust is easy to break and the writing board is not wiped clean.

[0012] The existing blackboard purification vacuum cleaner CN201010576659.3 technology has better solved the problems of the existing technology of easily damaging the fine dust and not being able to be wiped clean, but it is mainly the core equipment of the dust-free blackboard. This technology has not better solved the common problems of the existing technology of easily damaging the fine dust and not being able to be wiped clean.

[0013] These problems not only affect the teaching environment and teaching quality, but also bring many obstacles to the development of environmentally friendly teaching aids and the technical field of youth myopia prevention and control. Summary of the invention

[0014] The purpose of the present invention is to provide a writing board with eye protection function to solve the problem in the prior art that students' myopia and teachers' occupational disease prevention and control cannot be achieved at the same time, and has other advantages or characteristics, such as: avoiding the harm of moisture to electronic products when wiping the blackboard with water, and improving performance and greatly reducing costs.

[0015] To achieve the above object, the present invention provides the following technical solutions:

[0016] A writing board with eye protection function, consisting of a blackboard, an electronic screen and a blackboard purification vacuum cleaner;

[0017] The blackboard includes a first blackboard and a second blackboard, which are respectively arranged on the left and right sides of the electronic screen;

[0018] The blackboard cleaning vacuum cleaner comprises a blackboard cleaning vacuum cleaner host, the interior of the blackboard cleaning vacuum cleaner host is divided into a host upper box body and a host lower box body by a partition;

[0019] The host upper box is provided with a host switch and a knob switch on the outside, and an exhaust fan and an inverted U-shaped corrugated air duct are provided inside, wherein one end of the inverted U-shaped corrugated air duct is provided as an air outlet, and the other end is provided as an air inlet;

[0020] The interior of the main engine lower box is provided with a first filter cylinder and a second filter cylinder, the first filter cylinder is provided with an L-shaped right straight pipe, the bottom end of the right straight pipe is provided with a right elbow, the main engine air inlet provided at the top thereof passes through the main engine upper box, and is connected to the blackboard brush head through a telescopic tube, the second filter cylinder is provided with an L-shaped left straight pipe, the bottom end of the left straight pipe is provided with a left elbow, the left straight pipe is connected with the air outlet of the inverted U-shaped corrugated air guide pipe, the air inlet of the inverted U-shaped corrugated air guide pipe is located at the inner top of the first filter cylinder, and a pipeline guide plate is provided at the air inlet;

[0021] A main engine exhaust port is arranged at the middle position of the partition.

[0022] Furthermore, the thickness of the blackboard purification vacuum cleaner host does not exceed 16 cm, an observation window is provided at the lower part of the outer front side thereof, and a power cord and a socket are provided in conjunction therewith, and the host is installed directly below the blackboard through a back frame.

[0023] Furthermore, the exhaust fan is provided with an exhaust window, the air inlet of which is located at the top of the second filter cylinder and is provided with a dust filter bag.

[0024] Furthermore, the blackboard brush head is a special anti-static blackboard brush head which uses animal hair that does not generate static electricity as a brush and plant fiber as a brush core, and is provided with a brush head wall hanging card for hanging.

[0025] Furthermore, the movable radius of the telescopic tube is 3.6 m.

[0026] Furthermore, the blackboard includes a flat board, a push-pull board, a lifting board or an electric lifting board.

[0027] Furthermore, the writing board with eye protection function is equipped with a dust-proof chalk or a film-forming water-based pen.

[0028] The writing board with eye protection function of the present invention has the following beneficial effects:

[0029] It can prevent occupational diseases of teachers, prevent myopia of students, and avoid the harm of moisture to electronic products when wiping with water. More importantly, the use of this invention can directly or indirectly prevent myopia of students, which is cost-saving and effective.

[0030] The existing technology, including electronic products, whiteboard pens, film-forming water-based pens, water-soluble chalks, electric blackboard erasers (blackboard purification vacuum cleaners) and other teaching aids, is mainly considered from the technical perspective of dust-free blackboards. The main purpose is to facilitate teaching and solve the problem of dust when brushing the blackboard. As for the problem of myopia among adolescents, not much consideration has been given to it. At the same time, another beneficial function produced by the optimized combination of the new generation of blackboard purification vacuum cleaners and the above-mentioned teaching aids has not yet been discovered: eye protection function.

[0031] It is well known that if the blackboard is brushed clean, the contrast effect will be good when writing on it again, which will prevent eyes from getting tired and help prevent myopia. Theory and practice have proved that a writing board with eye protection function does have this function, which seeks benefits and avoids harm, focuses on prevention, is effective and inexpensive, and the more it is popularized, the more obvious the eye protection effect will be.

[0032] Application scenarios: Suitable for various schools and educational institutions as dust-free classrooms and for the prevention and control of myopia among children and adolescents. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural diagram of a writing board with eye protection function according to a first embodiment of the present invention;

[0034] Figure 2 It is a front view of a blackboard purification vacuum cleaner involved in a writing board with eye protection function of the present invention;

[0035] Figure 3 It is a working cross-sectional view of a blackboard purification vacuum cleaner involved in a writing board with eye protection function of the present invention;

[0036] Figure 4 It is a schematic diagram of the working principle of a filter cylinder of a blackboard purification vacuum cleaner involved in a writing board with eye protection function of the present invention;

[0037] Figure 5 It is a schematic diagram of the working principle of the inverted U-shaped corrugated air guide pipe with guide plate described in the blackboard purification vacuum cleaner of the present invention;

[0038] Figure 6 This is a front view of a second embodiment of a writing board with eye protection function according to the present invention.

[0039] in,

[0040] 1. First blackboard; 2. Second blackboard; 3. Electronic screen; 4. Blackboard purification vacuum cleaner host; 5. Telescopic tube; 6. Blackboard brush head; 7. Brush head wall mount card; 8. Host switch; 9. Power cord and socket; 10. Observation window; 11. Host lower box; 12. Inverted U-shaped corrugated air duct; 13. First filter cylinder; 14. Second filter cylinder; 15. Left straight pipe; 16. Right straight pipe; 17. Right elbow; 18. Left elbow; 19. Dust filter bag; 20. Exhaust fan; 21. Exhaust window; 22. Host exhaust port; 23. Host air inlet; 24. Pipe guide plate; 25. Fine dust and water droplets; 26. Coarse dust and dust-containing water droplets; 27. Coarse water-containing dust and dust-containing water droplets; 28. Coarse dust and dust-containing water droplets; 29. ​​Inverted U-shaped corrugated air duct air outlet; 30. Inverted U-shaped corrugated air duct air inlet; 31. Main unit upper box; 32. Tap water; 33. Knob switch; 37. Transparent cylinder; 38. Elbow air outlet; 39 Wind and water in centrifugal motion; 40. Partition; 601. The rear blackboard on the left side of the lifting plate; 602. The rear blackboard on the right side of the lifting plate; 603. Electronic screen; 604. When the front blackboard of the lifting plate rises to the top. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0043] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The present invention provides a writing board with eye protection function, which is composed of a blackboard, an electronic screen and a blackboard purification vacuum cleaner;

[0045] The blackboard includes a first blackboard 1 and a second blackboard 2, which are respectively arranged on the left and right sides of the electronic screen 3;

[0046] The blackboard cleaning vacuum cleaner comprises a blackboard cleaning vacuum cleaner main unit 4, the interior of the blackboard cleaning vacuum cleaner main unit 4 is divided into a main unit upper box body 31 and a main unit lower box body 11 by a partition 40;

[0047] The main unit upper box 31 is provided with a main unit switch 8 and a knob switch 33 on the outside, and an exhaust fan 20 and an inverted U-shaped corrugated air duct 12 are provided inside thereof, one end of the inverted U-shaped corrugated air duct 12 is provided with an air outlet 29, and the other end is provided with an air inlet 30;

[0048] The interior of the main engine lower box 11 is provided with a first filter cylinder 13 and a second filter cylinder 14. The first filter cylinder 13 is provided with an L-shaped right straight pipe 16, and the bottom end of the right straight pipe 16 is provided with a right elbow 17. The main engine air inlet 23 provided at the top thereof passes through the main engine upper box 31 and is connected to the blackboard brush head 6 through the telescopic pipe 5. The second filter cylinder 14 is provided with an L-shaped left straight pipe 15, and the bottom end of the left straight pipe 15 is provided with a left elbow 18. The inverted U-shaped corrugated air duct outlet 29 is connected to the left straight pipe 15. The inverted U-shaped corrugated air duct air inlet 30 is located at the inner top of the first filter cylinder 13, and the air inlet 30 thereof is provided with a pipeline guide plate 24;

[0049] A main unit exhaust port 22 is disposed in the middle of the partition plate 40 .

[0050] Furthermore, the thickness of the blackboard purification vacuum cleaner host 4 does not exceed 16 cm, and an observation window 10 is provided at the lower part of the outer front side thereof, and a power cord and a socket 9 are provided in a matching manner, and are installed directly below the blackboard through a back frame.

[0051] Furthermore, the exhaust fan 20 is provided with an exhaust window 21 , and the air inlet thereof is located at the top of the second filter cylinder 14 and is provided with a dust filter bag 19 .

[0052] Furthermore, the blackboard brush head 6 is an anti-static special blackboard brush head which uses animal hair that does not generate static electricity as a brush and plant fiber as a brush core, and is provided with a brush head wall hanging card 7 for hanging.

[0053] Furthermore, the movable radius of the telescopic tube 5 is 3.6 m.

[0054] Furthermore, the blackboard includes a flat board, a push-pull board, a lifting board or an electric lifting board.

[0055] Furthermore, the writing board with eye protection function is equipped with a dust-free chalk or a film-forming water-based pen.

[0056] Specific:

[0057] The writing board with eye protection function prevents students from myopia from the source through the following methods of seeking benefits and avoiding harm and the principle of prevention first:

[0058] 1. The invention can be used to clean the surface of the object by brushing and sucking it cleanly with high purification accuracy, thereby preventing dust from flying and preventing occupational diseases of teachers. The chalk writing on the green board (blackboard) can be cleaned by brushing, and the writing can be done as soon as it is erased. The contrast effect of writing on the blackboard again is good. Compared with other teaching aids, the eyes are not easily fatigued, which is conducive to preventing myopia.

[0059] 2. The use of this invention allows teachers and students to easily and safely transition to an environmentally friendly and healthy chalk blackboard teaching environment for teaching and learning, without over-reliance on electronic product teaching (accounting for less than 30% of the total class hours), reducing the chance of eye injury; and without over-reliance on other blackboard writing tools that are dust-free but difficult to write well and difficult to wipe clean, thereby reducing the chance of poor contrast effects and eye fatigue, and achieving the purpose of preventing students from myopia.

[0060] The special brush head for blackboard purification vacuum cleaner involved in the writing board with eye protection function adopts animal hair as the brush and plant fiber material as the brush core, and has the following effects: static electricity is not easy to generate when wiping the blackboard, the board surface is highly clean, the brushing is cleaner, the contrast effect of writing on the blackboard is good, the eyes are not easily fatigued, and it is beneficial to the prevention and control of myopia.

[0061] The blackboard purification vacuum cleaner host involved in the writing board with eye protection function adopts vacuum silent vacuuming, aggregates fine powder into agglomerates, and centrifugal water film purification principles, and has the effects of: sucking fine dust PM2.5 without the characteristics of being difficult to break, no secondary pollution, and greatly extending the service life, thereby improving cost performance and reducing costs.

[0062] The blackboard, electronic screen, dust chalk and blackboard purification vacuum cleaner involved in the writing board with eye protection function are optimized in combination, which is also an application innovation, especially with the cooperation and support of a new generation of blackboard purification vacuum cleaner, which jointly produce beneficial effects: when in use, it can be brushed quickly and cleanly without dust, and the effect is immediate, which can prevent occupational diseases of teachers, prevent myopia of students, and avoid the harm of moisture to electronic products when wiping the blackboard with water, thereby bringing better economic and social benefits.

[0063] The following is a specific implementation example of the present invention, which is now combined with the accompanying drawings to illustrate its specific application and effect. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown:

[0064] Embodiment 1:

[0065] The method for optimizing the combination of a writing board with eye protection function is as follows:

[0066] Overall structure: The present invention relates to a writing board with eye protection function, which is mainly composed of a first blackboard 1, a second blackboard 2, an electronic screen 3, dust chalk, and a blackboard purification vacuum cleaner.

[0067] Part 1: First blackboard 1, second blackboard 2

[0068] It is flat, wear-resistant, and glare-free. When writing with dry chalk or dust chalk, it does not slip and is easy to write and erase.

[0069] Component 2: Electronic screen 3

[0070] As an auxiliary tool for modern teaching, it plays an irreplaceable role in distance education and resource sharing. However, if it does not exceed 30% of the class time, the advantages outweigh the disadvantages; otherwise, the disadvantages outweigh the advantages. Try to use eye-damaging electronic screens as little as possible in teaching, and the use of electronic products should account for less than 30% of the total class time. Try to use blackboard teaching as much as possible, accounting for more than 70% of the total class time. This fully complies with the teaching rules and is beneficial to protecting students' eyes.

[0071] Component 3: Dust chalk (blackboard writing tool)

[0072] For blackboard writing, use dry chalk that does not fly away dust and is easy to write and erase: dust-free chalk; if dust is emitted when brushing, use the special blackboard brush head that comes with a blackboard purification vacuum cleaner, which is quick and clean. Try to use less or no water-based pens that are difficult to wipe clean, or water-soluble chalk for blackboard writing; use dust-free chalk (dry chalk) that is easy to write and erase for blackboard writing to avoid the harm of moisture to electronic products when erasing the blackboard with water, which is beneficial to protecting students' eyes.

[0073] Part 4: Blackboard Purification Vacuum Cleaner

[0074] The thickness of the blackboard purification vacuum cleaner host 4 is ≤16cm. It is installed with a back frame just below the first blackboard 1 and the second blackboard 2, 1.2m to the left of the first blackboard 1. The lower end of the blackboard purification vacuum cleaner host 4 is preferably 20cm from the ground; the telescopic tube 5 has an active radius of 3.6m, which can brush the farthest writing on the upper right side of the second blackboard 2. A special blackboard brush head 6 that does not generate static electricity when wiping the blackboard is used. A special blackboard brush with a suction force greater than 13KPa, a sound less than 59 decibels, a purification accuracy higher than 99.6%, a high board cleanliness, fine dust absorption that is not easy to break, no secondary pollution, and a long service life of 3-5 years is used to wipe the blackboard. It is healthy and eye-protecting, and is cost-saving and effective.

[0075] Embodiment 2:

[0076] When brushing the blackboard (the rear blackboard 601 on the left side of the lifting plate, the rear blackboard 602 on the right side of the lifting plate, or the first blackboard 1, the second blackboard 2), pick up the blackboard brush head 6 that does not generate static electricity to wipe the blackboard, the power of the blackboard purification vacuum cleaner host 4 will be automatically turned on, and under the action of the exhaust fan 20, the dust brushed off and the air are mixed, and then pass through the suction port of the blackboard brush head 6, the telescopic tube 5, the right straight tube 16, the right elbow 17 and the elbow outlet 38, enter the first filter cylinder 13 and push the tap water 32 to perform high-speed centrifugal movement The wind and water 39 in centrifugal motion force the air to fully contact the water, that is, close contact, strong collision, and repeated friction. At this time, about 90% of the dust and odor are instantly captured by the water film. Then, under the action of the duct guide plate 24, the air is sent from the first filter cylinder 13 through the air inlet 30 of the duct guide plate 24, and continues to move forward in a tornado shape along the inverted U-shaped corrugated air guide pipe 12 with the guide plate, and is sent to the second filter cylinder 14 again through the left straight pipe 15 and the left elbow 18 for centrifugal dehydration and dust removal;

[0077] In the inverted U-shaped corrugated air duct 12 with a guide plate, the air containing a small amount of dust further collides and adheres with the water droplets, and moves forward with centrifugal motion; under the action of the strong force of water molecules, the fine dust and water droplets 25 quickly adhere to form a mass (coarser dust and dust-containing water droplets 26, coarser water-containing dust and dust-containing water droplets 27) and become coarse dust and dust-containing water droplets 28 much larger than Pm2.5, and are sent to the second filter cylinder 14 for centrifugal dehydration and dust removal treatment; under the action of the exhaust fan 20, the purified air enters the dust filter bag 19 again for fine filtration, and then is discharged from the main machine exhaust port 22 through the exhaust window 21; if too much dust is sucked, it can be replaced with tap water 32.

[0078] The first filter cylinder 13 is provided with a water level warning line mark, and is filled with about 500 ml of water (tap water) each time, which can be checked at any time through the observation window 10.

[0079] In the present invention, the blackboard, the electronic screen, the dust chalk (or the film-forming water-based pen), and the blackboard purification vacuum cleaner are inseparable; if a writing board and dust chalk that are easy to write and erase are not used, but a water-based pen or water-based chalk that is difficult to wipe clean is used for writing on the blackboard, no matter how strong the suction of the blackboard purification vacuum cleaner is and how good the special brush head for the blackboard is, it is difficult to wipe the blackboard clean; if a writing board and dust chalk that are easy to write and erase are used for writing on the blackboard, but an electric blackboard brush with low suction and poor brushing is used as a matching device, it is also difficult to brush and suck the blackboard clean, and the above two methods cannot achieve the eye protection effect; if there is no matching electronic screen, the classroom will lack liveliness, intuition and resource sharing.

[0080] In summary, the key technologies and innovations of the present invention are:

[0081] 1. Key technologies

[0082] Blackboard Purification Vacuum Cleaner Technology

[0083] Principle: Vacuuming and silent dust collection, agglomerating fine powder into agglomerates, and centrifugal water film purification;

[0084] Function: strong suction, low noise, clean brushing, fine dust Pm2.5 is not easy to break, can quickly suck away the dust brushed and purify it thoroughly.

[0085] Optimized combination technology:

[0086] In the present invention, the first blackboard 1, the second blackboard 2, the electronic screen 3, the dust chalk (or the film-forming water-based pen), and the blackboard purification vacuum cleaner are optimized in combination, and the effect is remarkable. The four support each other and work together to produce a new effect, namely: it can prevent occupational diseases of teachers and prevent myopia of students. The four are optimized in combination and cannot be used separately. If separated, there is no eye protection effect.

[0087] If you use ordinary blackboard brushes to wipe 10,000 large blackboards, to achieve the same cleaning effect, you will need at least 30,000 brushes, and at one yuan each, it will cost 30,000 yuan; if you use a blackboard purification vacuum cleaner as a matching device, instead of ordinary blackboard brushes to wipe 10,000 large blackboards, one machine is enough, and its comprehensive cost is less than 1 / 10 of the total price of 30,000 ordinary blackboard brushes, which greatly reduces costs, improves timeliness, and works together to produce an eye protection function.

[0088] 2. Innovation

[0089] 1. Use a blackboard vacuum cleaner as a companion to an eye-protection writing board

[0090] It is well known that if the blackboard is not wiped clean and is gray, the contrast effect of writing on the blackboard will be poor. Over time, students' eyes will easily become tired and myopic.

[0091] If you use the anti-static brush head of the blackboard purification vacuum cleaner to wipe the blackboard, it is fast and clean, and can quickly purify fine dust Pm2.5. Beneficial effect: It solves the common problem that the school blackboard is either dusty, which makes teachers prone to occupational diseases, or it cannot be wiped clean.

[0092] The writing board with eye protection function solves the common problems that have long troubled teachers in the education field, such as blackboard teaching that cannot be cleaned cleanly, dust is floating, the contrast effect is not good, and it is easy to cause eye fatigue and myopia.

[0093] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A writing board with eye protection function, characterized in that: It consists of a blackboard, an electronic screen and a blackboard purification vacuum cleaner; The blackboard includes a first blackboard and a second blackboard, which are respectively arranged on the left and right sides of the electronic screen; The blackboard cleaning vacuum cleaner comprises a blackboard cleaning vacuum cleaner host, the interior of the blackboard cleaning vacuum cleaner host is divided into a host upper box body and a host lower box body by a partition; The host upper box is provided with a host switch and a knob switch on the outside, and an exhaust fan and an inverted U-shaped corrugated air duct are provided inside, wherein one end of the inverted U-shaped corrugated air duct is provided as an air outlet, and the other end is provided as an air inlet; The interior of the main engine lower box is provided with a first filter cylinder and a second filter cylinder, the first filter cylinder is provided with an L-shaped right straight pipe, the bottom end of the right straight pipe is provided with a right elbow, the main engine air inlet provided at the top thereof passes through the main engine upper box, and is connected to the blackboard brush head through a telescopic tube, the second filter cylinder is provided with an L-shaped left straight pipe, the bottom end of the left straight pipe is provided with a left elbow, the left straight pipe is connected with the air outlet of the inverted U-shaped corrugated air guide pipe, the air inlet of the inverted U-shaped corrugated air guide pipe is located at the inner top of the first filter cylinder, and a pipeline guide plate is provided at the air inlet; A main engine exhaust port is arranged at the middle position of the partition.

2. The writing board with eye protection function according to claim 1, characterized in that: The thickness of the blackboard purification vacuum cleaner host does not exceed 16 cm, an observation window is arranged at the lower part of the outer front side thereof, and a power cord and a socket are arranged in a matching manner, and the host is installed directly below the blackboard through a back frame.

3. The writing board with eye protection function according to claim 1, characterized in that: The exhaust fan is provided with an exhaust window, and its air inlet is located at the top of the second filter cylinder and is provided with a dust filter bag.

4. The writing board with eye protection function according to claim 1, characterized in that: The blackboard brush head is a special anti-static blackboard brush head which uses animal hair that does not generate static electricity as a brush and plant fiber as a brush core, and is provided with a brush head wall hanging card for hanging.

5. The writing board with eye protection function according to claim 1, characterized in that: The movable radius of the telescopic tube is not less than 3.6m.

6. The writing board with eye protection function according to claim 1, characterized in that: The blackboard includes a flat board, a push-pull board, a lifting board or an electric lifting board.

7. The writing board with eye protection function according to claim 1, characterized in that: The writing board with eye protection function is equipped with a dust-free chalk or a film-forming water-based pen.

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