CN207257181U

CN207257181U - A kind of dustless projection blackboard

Info

Publication number: CN207257181U
Application number: CN201721028948.3U
Authority: CN
Inventors: 鄢楚楚
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-17
Filing date: 2017-08-17
Publication date: 2018-04-20
Anticipated expiration: 2027-08-17

Abstract

It the utility model is related to a kind of dustless projection blackboard, including frame (1), transparent back panel (2), screen-rollong (3), driving roller (4), driven roller (5), hairbrush (6), motor (8) and retarder (9), it is characterized in that, the frame (1) is used to be installed on the basis of metope, the driving roller (4) and driven roller (5) is rotatably mounted on the upper and lower side of frame (1) by bearing respectively, the hairbrush (6) has two, it is separately mounted to the outside of the upper and lower side of frame (1) and the plastic cloth positioned at screen-rollong (3), for removing the writing on plastic cloth surface, motor (8) can drive driving roller (4) to rotate by retarder (9).The dustless projection blackboard of the utility model, it is simple in structure, environmentally friendly, multi-functional, there is motor-driven screen-rollong, circulation erasing is carried out to the screen of Student oriented, have LED light to form backlight after screen, do not hinder eye, the backlight after screen can close, and be projected for watching.

Description

A kind of dustless projection blackboard

Technical field

Teaching equipment material technical field is the utility model is related to, more particularly to a kind of dustless projection blackboard.

Background technology

In each classroom, there is an essential equipment, that is, blackboard.The brush that present blackboard has most original exists Black blackboard on wall, also has the green blackboard of hung on a wall, the blank also write using black marker, is more had advanced Touch screen electronic blackboard.It is second of blackboard that classroom is most common at present, and this blackboard is cheap, and easy for installation, but usually Classroom teaching has inconvenience, it still uses chalk-writing first, and the dust that chalk produces can bring a series of strong Kang Wenti, this is all a kind of potential hazard to student and teacher.Secondly, this blackboard also needs to teacher or student uses by hand Blackboard eraser erasing out handwriting, not only aggravates work load to teacher, and also the learning efficiency to student also brings along certain influence.Also With the presence of this blackboard and classroom used one huge contradiction of projecting apparatus now, on this series of problems student and religion Teacher has an intimate knowledge, and when outdoor light is relatively dark or evening, the lamp that teacher needs to open classroom front row illuminates blackboard So as to which student can be allowed to see the word write on blackboard, but after front-seat lamp is opened, light will influence whether projecting apparatus Drop shadow effect, so the front-seat lamp of the switch of teacher back and forth can be frequently seen, come be easy to make student see clearly the word on blackboard or Ppt on projecting apparatus, so also can the unnecessary teaching load for aggravating teacher.

Therefore, classroom of the prior art is primarily present following two problems with blackboard：1) used now on classroom black Plate is mostly tradition chalk-writing blackboard, and this blackboard not only needs to go to wipe by hand, but also dust is to the health of teachers Influence also very big；2) projecting apparatus in classroom and blackboard are generally all there are a contradiction now, at night or outdoor optical Line turns on light than needing to open the lamp at classroom front row in the case of dark and influences whether the viewing effect of projecting apparatus, does not turn on light Word on blackboard is not seen again.

Utility model content

The goal of the invention of the utility model is to provide a kind of simple in structure, environmentally friendly, multi-functional dustless projection blackboard, this is black Plate has motor-driven screen-rollong, and circulation erasing is carried out to the screen of Student oriented, has LED light to form backlight after screen, does not hinder , the backlight after screen can close, and be projected for watching.

The concrete technical scheme of the utility model is a kind of dustless projection blackboard, including frame, transparent back panel, screen-rollong, master Dynamic roller, driven roller, hairbrush, motor and retarder, it is characterised in that the frame is used to be installed on the basis of metope, The driving roller and driven roller are rotatably mounted on the upper and lower side of frame, driving roller and driven roller by bearing respectively Rotation axis it is parallel to the ground, the screen-rollong is formed by one piece of white square plastic cloth is end to end, screen-rollong set master On dynamic roller and driven roller and it is tensioned, the transparent back panel is fixed on frame and is adjacent to one section of screen-rollong in Student oriented Below, the outside for being printed with two, being separately mounted to the upper and lower side of frame and the plastic cloth positioned at screen-rollong, for removing The engine base of the writing on plastic cloth surface, the motor and retarder is fixedly mounted on frame, and motor can by retarder Driving roller is driven to rotate.

Further, multiple LED light are further included, multiple LED light are evenly arranged in transparent back panel, for shining Bright screen-rollong.

Further, the distance between rotation axis of the rotation axis of the driving roller and driven roller can be with Adjustment, for being tensioned screen-rollong.

Further, the LED light has switch, and when going to school and leaving school, which also can use the computer control on classroom Make into line flicker.

Further, write using marker on the plastic cloth of screen-rollong.

The beneficial effects of the utility model are：1) the dustless projection blackboard of the utility model has motor-driven screen-rollong, Circulation erasing can be carried out to the writing on the screen of Student oriented, hygienic environment-protecting, reduces labor intensity；2) there is LED light after screen Backlight is formed, does not hinder eye, the backlight after screen can close, and be projected for watching, and not have to thus switch indoor light repeatedly, Influence student's study；3) backlight after screen can flicker under computer control, go to school and leave school the time for reminding.

Brief description of the drawings

Fig. 1 is the front view of the dustless projection blackboard of the utility model；

Fig. 2 is the sectional view of the dustless projection blackboard of the utility model；

In figure, 1- frames, 2- transparent back panels, 3- screen-rollongs, 4- driving rollers, 5- driven rollers, 6- hairbrush, 7-LED lamps, 8- Motor, 9- retarders.

Embodiment

The technical solution of the utility model is further described with reference to Figure of description.

As shown in attached drawing 1-2, a kind of dustless projection blackboard of the utility model, including frame 1, transparent back panel 2, screen-rollong 3, Driving roller 4, driven roller 5, hairbrush 6, multiple LED light 7, motor 8 and retarder 9.

The frame 1 is used to be installed on the basis of metope.

The driving roller 4 and driven roller 5 are rotatably mounted on the upper and lower side of frame 1 by bearing respectively, actively roll The rotation axis of wheel 4 and driven roller 5 is parallel to the ground, and the screen-rollong 3 is end to end by one piece of white square plastic cloth Form.Square plastic cloth best surfaces frosted, be translucent shape.On the driving roller 4 and driven roller 5 that 3 sets of screen-rollong and it is tensioned. Vertical sliding slot can be set on the frame 1 of 5 both sides of driving roller 4 and driven roller, and driving roller 4 and driven roller 5 can be Fixed after suitable position is slided into sliding slot.In this way, the rotation axis of the driving roller 4 and the rotation axis of driven roller 5 The distance between line can adjust, for being tensioned screen-rollong 3.

The transparent back panel 2 is fixed on frame 1 and is adjacent to behind one section of screen-rollong 3 of Student oriented, transparent back panel 2 It can be made of organic glass.

The hairbrush 6 has two, is separately mounted to the outside of the upper and lower side of frame 1 and the plastic cloth positioned at screen-rollong 3.When When motor 8 drives the rotation of driving roller 4 by retarder 9,3 driving roller 4 of screen-rollong is driven around driving roller 4 and driven roller 5 Loopy moving, the surface of the plastic cloth of swiped through screen-rollong 3 at this time of hairbrush 6, removes the word that marker is write on the plastic cloth of screen-rollong 3 Mark.

The motor 8 and the engine base of retarder 9 are fixedly mounted on frame 1, and motor 8 can be driven by retarder 9 Driving roller 4 rotates.

Multiple LED light 7 are evenly arranged in transparent back panel 2, and installation method can be with gluing.For illuminating screen-rollong 3, The writing of convenient writing can be seen clearly by student.The LED light 7 have switch, when carrying out projector, can manually by LED light 7 is closed, and makes projection clear and legible, without the light for closing classroom.LED light 7 can pass through existing control circuit and class The teaching electronic brain connection of one's parents, when going to school and leaving school, which also can use the computer on classroom to control into line flicker, remind student Attend class or finish class with teacher.

The dustless projection blackboard of the utility model can be mounted side by side three, can be by middle dustless projection when such as projecting The LED light 7 of blackboard is closed, and is projected with projector alignment, and at this time, two dustless projection blackboards can also carry out writing on the blackboard on side.

Claims

1. a kind of dustless projection blackboard, including frame (1), transparent back panel (2), screen-rollong (3), driving roller (4), driven roller (5), hairbrush (6), motor (8) and retarder (9), it is characterised in that the frame (1) is used to be installed on the basis of metope, The driving roller (4) and driven roller (5) is rotatably mounted on the upper and lower side of frame (1), driving roller by bearing respectively (4) and driven roller (5) rotation axis it is parallel to the ground, the screen-rollong (3) is by one piece of white square plastic cloth head and the tail Connect and form, on the driving roller (4) and driven roller (5) of screen-rollong (3) set and be tensioned, the transparent back panel (2) is fixed on frame On frame (1) and it is adjacent to behind one section of screen-rollong (3) of Student oriented, the hairbrush (6) there are two, is separately mounted to frame (1) outside of upper and lower side and the plastic cloth positioned at screen-rollong (3), for removing the writing on plastic cloth surface, the motor (8) It is fixedly mounted on the engine base of retarder (9) on frame (1), motor (8) can drive driving roller (4) by retarder (9) Rotate.

A kind of 2. dustless projection blackboard according to claim 1, it is characterised in that multiple LED light (7) are further included, it is described Multiple LED light (7) be evenly arranged in transparent back panel (2), for illuminating screen-rollong (3).

3. any one a kind of dustless projection blackboard according to claim 1-2, it is characterised in that existed using marker Write on the plastic cloth of screen-rollong (3).