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A technology of projectors and drivers, which is applied in the direction of instruments, educational appliances, and electric-operated teaching aids. It can solve the problems of inconvenience, time, and cost for teachers in class, and achieve the effect of speeding up class efficiency and fast switching
Inactive Publication Date: 2017-11-03
刘焕雄
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[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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[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0020] see Figure 1-Figure 3 , the present invention provides a technical solution: a projector interactive device for teaching, its structure includes a bracket 1, a vent 2, a machine box 3, a voice device 4, a lens 5, an optical machine 6, a coil 7, a protector 8. Radiator 9, heat dissipation fan 10, control board 11, driver 12, said support 1 is provided with air vent 2, said machine box 3 is provided with voice device 4, said voice device 4 is formed by lead wire 401, transformer 402, a magnet 403, a voice coil 404, a diaphragm 405, a protective cover 406, and a casing 407. The lead wire 401 is tightly connected to the transformer 402, the transformer 402 is connected to the magnet 403, and the magnet 403 is connected to the voice coil 404. ...
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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 ...
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Application Information
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