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Projection screen winding device for teaching

A technology of rolling device and projection cloth, which is applied in the field of teaching supplies, can solve the problems of inconvenient carrying and inconvenient winding, and achieve the effects of convenient carrying, avoiding occupation, and simple operation

Inactive Publication Date: 2019-10-11
李明宸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A projection cloth rewinding device for teaching proposed by the present invention solves the problems of inconvenient rewinding and portability

Method used

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  • Projection screen winding device for teaching
  • Projection screen winding device for teaching
  • Projection screen winding device for teaching

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0027] refer to Figure 1-6 , a projection cloth rewinding device for teaching, comprising a metal storage box 1, a drive motor 2 is provided at one end of the metal storage box 1, a projection cloth 3 is provided at the middle position of the lower surface of the metal storage box 1, and the upper surface of the metal storage box 1 The top box 4 is fixedly connected to the surface, and the edge positions on both sides of the lower surface of the metal storage box 1 are fixedly connected to the first movable rod 5, and the lower ends of the two first movable rods 5 are movably connected to the first sleeve 6. The fixed plate 7 is fixedly connected between the first s...

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Abstract

The invention belongs to the technical field of teaching supplies, and particularly relates to a projection screen winding device for teaching. For the problems that an existing projection screen is inconvenient to wind and carry, the following scheme is provided now: the projection screen winding device comprises a metal storage box; a driving motor is arranged at one end of the metal storage box; the projection screen is arranged in the middle of the lower surface of the metal storage box; a top box is fixedly connected to the upper surface of the metal storage box; the edges of the two sides of the lower surface of the metal storage box are fixedly connected with first movable rods; and the lower ends of the two first movable rods are movably connected with first sleeve pipes. The winding device provided by the invention has the advantages that an emergency lighting device is additionally arranged, so that a teacher can use the emergency lighting device for emergency lighting beforeand after using a projector; the projection screen is additionally provided with a winding structure convenient to fold and fix, so that the projection screen is convenient to wind when not in use, and the occupation of storage space is avoided; and the device is convenient to carry and relatively practical.

Description

technical field [0001] The invention relates to the technical field of teaching supplies, in particular to a rolling device for projection cloth for teaching. Background technique [0002] Projection screens are used in movies, offices, home theaters, large conferences and other occasions to display images and video files. Divided into many specifications and sizes. At present, in the modern digital teaching environment, many schools often use projection cloth and projectors to facilitate explanations during teaching and greatly improve the quality of teaching. [0003] However, the existing projection cloth still has certain disadvantages. For example, it is usually fixed with a projection cloth in a fixed frame, or an electric projection cloth with a driving motor is fixed on the wall. , the former is inconvenient to rewind and take up a lot of space, and the latter is inconvenient to carry. At the same time, during the projection process, it needs to be in a dark enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/58F21V33/00
CPCF21V33/00G03B21/58
Inventor 李明宸
Owner 李明宸