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A portable emergency teaching projection device

A projection device, portable technology, applied in projection devices, optics, educational appliances, etc., can solve the problems that affect the quality of teaching, the projector can no longer work, etc.

Active Publication Date: 2022-03-08
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing projection device can only be placed in a fixed position, cannot be effectively adjusted, and can be projected to different positions, and the projector can no longer work when the power is cut off, which affects the quality of teaching, so a portable Emergency teaching projection device to solve the problems raised in the above

Method used

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  • A portable emergency teaching projection device
  • A portable emergency teaching projection device
  • A portable emergency teaching projection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] see Figure 1-7 , an embodiment provided by the present invention: a portable emergency teaching projection device, including a projector 1, a limit frame 2, a receiving frame 3 and a sliding board 4, and the sliding board 4 is slidably connected to the bottom of the receiving frame 3 Inside, the limit frame 2 is movably installed on the upper part of the receiving frame 3, the projector 1 is plugged in the inside of the receiving frame 3, and the edges on both sides of the upper surface of the sliding board 4 are evenly fixed and connected with rubber teeth 42, and the two sides of the sliding board 4 The side is fixedly connected with a clamping plate 43 , one side of the sliding plate 4 is symmetrically fixedly connected with a limiting block 44 , and the other side of the sliding plate 4 is symmetrically fixedly connected with a clamping block 41 at both ends.

[0027] Specifically, the center of the top surface of the limit frame 2 is fixedly connected with a threa...

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PUM

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Abstract

The present invention relates to the technical field of projection equipment, in particular to a portable emergency teaching projection device, which includes a projector, a limit frame, a receiving frame and a sliding board. The frame is movably installed on the upper part of the receiving frame, and the projector is plugged into the inside of the receiving frame. The upper surface of the sliding board is evenly fixed with rubber teeth, and the two sides of the sliding board are fixedly connected with snap-in plates. The center of the top surface of the frame is fixedly connected with a threaded sleeve, one side of the limit frame is fixedly connected with a limit clamp, the inner center of the limit clamp is fixedly connected with a support rod, and the outer surface of the middle part of the support rod is rotated and sleeved with a pull ring . The invention can conveniently carry the emergency projection device, and can quickly install, store and use the spare equipment in the case of power failure, so as to avoid affecting the normal progress of teaching.

Description

technical field [0001] The invention relates to the technical field of projection teaching equipment, in particular to a portable emergency teaching projection device. Background technique [0002] Projectors are usually used in modern teaching activities to better display the teaching content to be presented and facilitate students to learn more intuitively. For teaching projectors, it is usually necessary to use a projection device to fix the projector on the ceiling of the classroom so that And keep the picture projected by the projector stable, and then connect the power supply of the teaching building, so that the teaching work can be carried out during class. [0003] The existing projection device can only be placed in a fixed position, cannot be effectively adjusted, and can be projected to different positions, and the projector can no longer work when the power is cut off, which affects the quality of teaching, so a portable An emergency teaching projection device ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16M11/04F16M7/00G03B21/54G09B5/02
CPCF16M11/04F16M11/043F16M7/00G03B21/54G09B5/02
Inventor 敖山崔艳唐朝生刘小燕徐敏彭雄飞申锦鹏
Owner HENAN POLYTECHNIC UNIV