LCD projection device for reducing external dust erosion based on music teaching
A projection device and music teaching technology, which is applied in music teaching aids, projection devices, educational appliances, etc., can solve the problems of reducing the service life of projection devices, affecting heat dissipation effect, and reducing heat dissipation performance, so as to improve maintenance safety and accelerate heat dissipation effect , Improve the cooling effect
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[0039] as attached figure 1 to attach Figure 8 Shown:
[0040] The invention provides an LCD projection device based on music teaching to reduce external dust erosion, comprising: a fixed top base 1; the fixed top base 1 is designed in a circular disc shape, and the fixed top base 1 is fixed on the roof of the music classroom in advance On the inner wall, the fixed top base 1 is a lifting device, and the inner side of the fixed top base 1 is provided with a scissor lifting frame that can be lifted and folded, and the lifting frame is electrically controlled by a micro-drive motor and a driving screw. The lifting structure design is convenient Control the projection device placement box 4 to move up and down through the up and down setting, so that the staff can adjust and repair the LCD projection device 9 from the ground, effectively improving the convenience and maintenance safety of the LCD projection device 9 adjustment and repair; fixed The bottom side of the top base ...
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