Projector interaction device for teaching

Abstract

The invention discloses a projector interactive device for teaching, the structure of which includes a bracket, a vent, a machine box, a voice device, a lens, an optical machine, a coil, a protector, a radiator, a cooling fan, a control board, and a driver. The bracket is provided with a vent, and the machine box is provided with a voice device, the voice device is composed of a lead wire, a transformer, a magnet, a voice coil, a diaphragm, a protective cover, and a casing, and the lead wire is tightly connected with the transformer , the transformer is connected to the magnet, the magnet is connected to the voice coil, the voice coil is connected to the diaphragm, and the diaphragm is tightly connected to the protective cover. The beneficial effect of the present invention is that a voice device is provided, Through the lead wire connection, the transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The direct definition of connecting the voice coil is the coil through the audio current, and the sound is transmitted with the diaphragm, so that the teacher can switch quickly during class. And it will not take more time, which speeds up the efficiency of class.

Description

technical field [0001] The invention is a projector interactive device used for teaching, which belongs to the field of teaching equipment. Background technique [0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools, and entertainment venues. According to different working methods, there are different types such as CRT, LCD, and DLP. [0003] The application number disclosed in the prior art is: CN201520219929.3 The present invention provides a portable projector, which is characterized in that the portable projector includes a projector body, a projector handle, a first projector heat dissipation port, a projection port and Projector bracket; the handle of the projector is set on the top of the projector body, the first projector ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a projector interactive device for teaching, so as to solve the problem that the above-mentioned equipment cannot be controlled by voice, which makes it inconvenient for the teacher to go to class and takes more time.

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