Environment-friendly blackboard for high school teaching
An environmentally friendly blackboard and high school technology, applied in the field of teaching supplies, can solve the problems of affecting learning, teachers and students' physical health, unclear reflection observation, chalk dust, etc., and achieve the effect of saving resources, fast speed and easy viewing
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[0030] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] see Figure 1-4 As shown, an embodiment provided by the present invention; a kind of environment-friendly blackboard for high school teaching, including a fixed base 1, a writing board 3, an electric telescopic rod 4, a controller 6, a cooling fan 9, a brightness adjuster 16 and a central processing unit 19. An electric telescopic rod 4 is installed on the upper part of the fixed base 1. A blackboard case 2 is installed on the upper end of the electric ...
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