Multi-functional laser chalk sleeve for teaching

Abstract

The invention relates to the technical field of a teaching appliance, in particular to a multi-functional laser chalk sleeve for teaching. The multi-functional laser chalk sleeve comprises a sleeve body; one end of the sleeve body is provided with a cavity for accommodating a chalk and is provided with a locking device for locking the chalk; the other end of the sleeve body is provided with a laser device; the laser device comprises a power supply, a laser lamp and a first switch which are connected in series; the sleeve body is sleeved with a hand protective casing; and a heating device is arranged in the hand protective casing. The multi-functional laser chalk sleeve for teaching is simple in structure, lowers the using cost, is easy to popularize, quite good in practicability and also quite convenient to operate, improves the work efficiency of teaching, prevents direct contact between fingers and the chalk in use and maintains the cleanness and sanitation in use. By arranging the laser device, a teacher can use the chalk more conveniently in class, so convenience is provided for teaching, and the teaching quality is improved. By arranging the heating device, the sleeve body ofthe multi-functional laser chalk sleeve can be heated when air temperature is relatively low, so a hand of a user is difficult to feel cold, and the user experience is greatly improved.

Description

Technical field [0001] The invention relates to the technical field of teaching appliances, in particular to a multifunctional laser chalk cover for teaching. Background technique [0002] Chalk is a common item for school teachers to write on blackboards. Nowadays, there are two main types of chalk used in China: ordinary chalk and dust-free chalk. The main ingredients are calcium carbonate and calcium sulfate, or a small amount of calcium oxide. Teachers often need to write and draw on the blackboard to explain. When writing, the fingers are in direct contact with the chalk, and the hands are often covered with white powder after a class, which causes pollution to the opponent and is detrimental to human health. [0003] In addition, when teachers are teaching, they often need to use chalk to write on the blackboard, turn books, or perform other operations. When the chalk is completed, the hand holding the chalk will be stained with a lot of dust. In addition, the teacher needs...

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.

Images