A retractable intelligent projection device for classrooms

Abstract

The invention relates to a shrinkable intelligent projection device special for classrooms. The device comprises two T-shaped supports, wherein two installation pillars are symmetrically arranged between the two T-shaped supports, a mobile motor is installed on the installation pillar on the back sides of the two T-shaped supports through a motor base, the output end of the mobile motor is connected with a lead screw, and the tail end of the lead screw is installed on the installation pillar located on the front sides of the two T-shaped supports; a sliding block is installed in the middle of the lead screw through threads, two limiting slide rods are symmetrically welded to the left end and right end of the sliding block, the two limiting slide rods are connected with two limiting slide chutes respectively in a sliding fit mode, and the two limiting slide chutes are symmetrically installed between the two installation pillars; the mobile motor drives the lead screw to rotate, and the lead screw drives the sliding block to make horizontal forward-backward movement steadily through limiting movement between the limiting slide rods and the limiting slide chutes. By the adoption of the device, shrinkable projection can be achieved, and hiding effect is good.

Description

technical field [0001] The invention relates to the field of e-commerce, in particular to a retractable intelligent projection device for classrooms. Background technique [0002] The so-called e-commerce refers to a kind of commercial activity centered on commodity exchange by means of information network technology; it can also be understood as the activity of conducting transaction activities and related services in the form of electronic transactions on the Internet, intranets and value-added networks. Transform all aspects of traditional business activities into electronic, networked and informatized. [0003] With the continuous invention of e-commerce, many colleges and universities set up e-commerce colleges to teach e-commerce to students in the classroom; the existing e-commerce teaching method generally consists of teachers giving PPT lectures on the existing ordinary multimedia teaching platform, and PPT It is said that e-commerce products generally need to be d...

AI Technical Summary

Problems solved by technology

[0003] With the continuous invention of e-commerce, many colleges and universities set up e-commerce colleges to teach e-commerce to students in the classroom; the existing e-commerce teaching method generally consists of teachers giving PPT lectures on the existing ordinary multimedia teaching platform, and PPT It is said that e-commerce products generally need to be displayed on projection equipment. In the existing projection equipment, the projection screen is usually shrunk and placed above the blackboard, and the projector is placed on the top of the classroom wall. They are all exposed in the classroom and have no shadow hiding function.

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