Multifunctional laser chalk sleeve

Abstract

The invention relates to the technical field of teaching tools, in particular to a multifunctional laser chalk sleeve. The multifunctional laser chalk sleeve comprises a sleeve body, and a hollow cavity for containing chalk is formed in one end of the sleeve body, the end part is provided with a clamping device used for clamping the chalk, a laser device is arranged at the other end of the sleevebody, and the laser device comprises a power source, laser lamps and a first switch, wherein the power source, the laser lamps and the first switch are connected in series; a hand protection sleeve sleeves the sleeve body; and a heating device is arranged in the hand protection sleeve. The multifunctional laser chalk sleeve is simple in structure, low in use cost, easy to popularize and good in practicability, direct contact between fingers and the chalk during use is avoided, and cleanness and sanitation during use are kept. By arranging the laser device, teachers can use the multifunctionallaser chalk sleeve more conveniently in class, teaching is facilitated, and teaching quality is improved. By arranging the heating device, the sleeve body of the multifunctional laser chalk sleeve canbe heated when the temperature is low, so that the hands are not easy to freeze, and the user experience degree is greatly improved.

Description

technical field [0001] The invention relates to the technical field of teaching appliances, in particular to a multifunctional laser chalk set. Background technique [0002] Chalk is a common article used by school teachers to write on blackboards. Now, the chalks used in China mainly include ordinary chalk and dust-free chalk. The main components are calcium carbonate and calcium sulfate, or contain a small amount of calcium oxide. Teachers often need to write and draw on the blackboard to explain. When writing, finger directly contacts with chalk, often after a class, hands are full of white powder, which pollutes hands and is unfavorable to people's health. [0003] And when the teacher is teaching, he often needs to use chalk to write on the blackboard, turn over the book, or perform other operations. After writing with chalk, the hand holding the chalk will be stained with a lot of dust. In addition, when the teacher is giving lectures, he needs to give instructions o...

AI Technical Summary

Problems solved by technology

In addition, when the teacher is giving lectures, he needs to give instructions on the corresponding position on the blackboard. In the lower position on the blackboard, the teacher is used to using the pointer to make instructions. In the higher position on the blackboard, it is difficult for ordinary pointers to make instructions. It is necessary to use a laser pointer to indicate separately. Therefore, the teacher needs to prepare chalk, pointer, and laser pointer before class, which increases some unnecessary work and brings a lot of trouble at the same time.

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