CN2794870Y - Dustless blackboard - Google Patents

Abstract

The utility model relates to a dustless blackboard, which comprises a blackboard and a magnet pen, wherein iron powder is arranged in a sandwich layer, the back face of the blackboard is provided with a strip-shaped magnet, the bottom side of the blackboard is provided with a slide way, the strip-shaped magnet is leftwards and rightwards slid in the slide way, and the surface of the blackboard is provided with an electronic clock. When the utility model is used, the magnet pen is used for writing on the surface of the blackboard and the iron powder is absorbed on the inner surface of the blackboard by the magnet pen to form handwriting and patterns. When the utility model is cleaned, the iron powder is absorbed back in the sandwich layer again by the strip-shaped magnet, and dust pollution is avoided. The electronic clock of the surface of the blackboard can also provide correct time for teachers and students. The utility model has the advantages of simple structure, convenience, sanitation safe use, etc., prevents dust pollution by the adsorption function of the magnet to the iron powder and protects the body heath of users.

Description

Dust-free blackboard

Technical field the utility model relates to a kind of study article, especially a kind of dust-free blackboard.

The technical background blackboard is school's necessary tool, and teachers and students are by the blackboard study and work.But all there is deficiency in present blackboard, and that must use chalk to write on blackboard exactly, certainly will cause great dust pollution like this, if things go on like this will seriously influence the healthy of Faculty and Students; And the classroom that has now do not have clock and watch, and teachers and students do not know correct time, very inconvenience.

The summary of the invention the purpose of this utility model provides a kind of dust-free blackboard, and being used to solve normal blackboard can't the dustproof problem.

For achieving the above object, the utility model dust-free blackboard, have the plastic blackboard of interlayer and the pen that nib has magnet in the middle of comprising, in interlayer, be provided with one deck iron powder, a bar magnet vertically is installed at the blackboard back side, be provided with a slideway on the blackboard base, bar magnet can horizontally slip in slideway, on the blackboard surface electronic clock is installed.

After adopting said structure, the user uses the magnet pen to write on the blackboard surface, thereby by the magnet of nib the iron powder of blackboard interlayer is adsorbed on blackboard surface formation writing and figure; In when cleaning, can be in slideway mobile bar magnet, by bar magnet iron powder is sucked back in the interlayer again, just can not see any writing and figure again on the blackboard surface like this; And the electronic clock on blackboard surface can also provide correct time for teachers and students.

The utility model has the advantages that: simple in structure, convenient and healthy, safe in utilization, by magnet the suction-operated of iron powder has been prevented dust pollution, protected the healthy of user, but also can provide correct time for the user.

Description of drawings Fig. 1 is the overall structure schematic diagram of the utility model dust-free blackboard.

The specific embodiment as shown in Figure 1, the utility model dust-free blackboard, have the plastic blackboard 1 of interlayer and the pen 2 that nib has magnet in the middle of comprising, in interlayer, be provided with one deck iron powder 3, a bar magnet 4 vertically is installed at blackboard 1 back side, be provided with a slideway 5 on blackboard 1 base, bar magnet 4 can horizontally slip in slideway 5, on blackboard 1 surface an electronic clock 6 is installed.When using, the pen 2 that the user uses nib to have magnet is write on blackboard 1 surface, because scribble iron powder 3 in the interlayer, so magnet pen 2 is adsorbed on iron powder 3 on blackboard 1 inner surface, thereby form writing and figure, students can be observed at the outer surface of blackboard 1; When cleaning blackboard 1, the user sucks back iron powder 3 in the interlayer by bar magnet 4 again, the user only needs that move left and right bar magnet 4 can be clean blackboard 1 removing surface in slideway 5, guaranteed the cleaning of blackboard 1, and in the process of cleaning, also avoided the dust pollution that causes by chalk, for user's health provides guarantee; And the electronic clock 6 that is installed in blackboard 1 surface can also provide correct time for teachers and students, effectively raises learning efficiency.

Claims (1)

1, a kind of dust-free blackboard, have the plastic blackboard (1) of interlayer and the pen (2) that nib has magnet in the middle of comprising, it is characterized in that: in interlayer, be provided with one deck iron powder (3), at blackboard (1) back side bar magnet (4) is installed vertically, be provided with a slideway (5) on blackboard (1) base, bar magnet (4) assigns in the slideway (5) and can horizontally slip, and on blackboard (1) surface an electronic clock (6) is installed.