An adjustable projection device for multimedia teaching

Abstract

The invention provides an adjustable projection device for multimedia teaching, which includes a projector and a guide rail. A chute is provided on the inner side of the guide rail. A hydraulic rod is welded on the bottom of the projector, and a hydraulic rod is arranged on one side of the hydraulic rod. A telescopic tube, the other side of the hydraulic rod is provided with a motor, the top of the motor is installed with a telescopic rod through a bolt, the top of the telescopic rod is welded with a gear, and one side of the chute is provided with tooth patterns, so There is a sliding sleeve on the top of the telescopic tube. The adjustable projection device for multimedia teaching can use the large heat capacity of the cooling water to increase its local heat dissipation rate, and simultaneously use two heat dissipation methods to dissipate heat at the same time without consuming electric energy. No noise, easy to use in classrooms, can prevent dust from affecting the heat dissipation efficiency of heat dissipation pipes and cooling pipes, can prevent a large amount of dust from accumulating at the bottom of the filter, does not require regular cleaning by personnel, saves manpower consumption, and is suitable for multimedia teaching Use it with projection.

Description

An adjustable projection device for multimedia teaching technical field [0001] The present invention relates to the technical field of projection equipment, in particular to an adjustable projection device for multimedia teaching. Background technique Projection equipment is the equipment commonly used in multimedia teaching classrooms, and the patent application number is the invention patent of CN92105738.5. Advantage, sliding projectors for wall projection and frosted glass plate projection are disclosed, existing projection equipment basically has a projection It has the advantages of high image definition, ability to perform keystone correction, light weight, easy installation and fixation, firm structure, and long service life. It meets the requirements for the use of teaching materials for screen projection. However, for the existing projection equipment, on the one hand, when working It will generate a lot of heat, especially the projection lamp. Since the pr...

AI Technical Summary

Problems solved by technology

[0002] Projection equipment is a commonly used equipment in multimedia teaching classrooms. The patent application number is CN92105738.5, which discloses a sliding projector for wall projection and frosted glass plate projection. The existing projection equipment basically has high projection clarity. , Capable of trapezoidal correction, light weight, easy to install and fix, firm structure, long service life, etc., can meet the requirements for using teaching materials for projection and playback. However, for existing projection equipment, on the one hand, it will Generate more heat, especially the projection lamp, because the projection lamp needs sufficient brightness, which will generate a lot of heat. Ordinary projectors often use fans to dissipate heat, which not only consumes power but also generates noise, which is not conducive to ensuring the quietness of the classroom , on the other hand, when dissipating heat, it will cause the dust in the air to adhere to the heat dissipation mechanism, which will easily affect the heat conduction efficiency of the heat dissipation mechanism. On the other hand, when using the filter mechanism to filter the air to ensure the heat dissipation efficiency of the heat dissipation mechanism , it is easy to cause the filter screen to be blocked, requiring personnel to clean it regularly, thereby increasing manpower consumption

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