CN2419051Y - White blackboard - Google Patents

Abstract

The utility model relates to a teaching white blackboard. The utility model is characterized in that no chalk is needed when writing on the blackboard; pens which are made of wooden bars or other materials are used; no dust is generated, and the effect of black board and white characters is obtained all the same.

Description

White blackboard

The utility model relates to teaching blackboard, a kind of White blackboard that does not particularly use chalk to write.

Present known blackboard must use chalk last writing, so certainly lead to dust, dust influences the healthy of teacher.

The purpose of this utility model provides a kind of writing without chalk, does not produce dust, does not influence the healthy White blackboard of teacher.

The new purpose of this practicality is achieved in that with piece transparent material (as glass) makes the plate face, and the one side of pole-face is coated the black grease, and this face is defined as the front; Another side is with the emery cloth sanding and coat white paint, and this face is defined as the back side.The plate face is contained on the framework, on the reinforcement of plate face back side framework, some fluorescent tubes is installed as required.

The pen of doing with timber or other materials when writing scrapes off the black grease on the plate face front, appears the white at the back side, forms white writing, and the light that fluorescent tube sends makes writing more clear to strengthen white.With hairbrush black grease brush all both can when wiping word.

Owing to adopted such scheme, do not produce dust when on White blackboard, writing, use chalk to write so thoroughly solved now with blackboard, the dust of wearing and tearing influences the healthy problem of teacher.

The utility model is compared structurally complicated with the blackboard that uses now, but use cost is coated with a grease and just can uses for a long time well below now using blackboard.It has solved existing with the insurmountable dust problem of blackboard.

Below in conjunction with drawings and Examples the utility model is described in detail.

Accompanying drawing is a schematic diagram of the present utility model

Among the figure: 1. black grease; 2. transparent panel face; 3. white paint; 4. framework; 5. framework reinforcement; 6. fluorescent tube.

Transparent panel face 2 is fixed on the framework 4 among the figure, and fluorescent tube 6 is contained on the framework reinforcement 5.Black grease 1 is coated in the front of transparent panel face 2, back side emery cloth sanding coated white lacquer 3 again, and the light that fluorescent tube 6 sends makes white writing more clear.

The black grease is made by vaseline and carbon black at the trial in person, its easily make dirty hand and clothes, the method that solves is: but one, White blackboard is made free lifting, make that part of plate face that need write be in the optimum height that the teacher writes, make teacher and plate face leave certain distance; Two, make the special fat of be difficult for making dirty hand and clothes.

Claims (1)

1. A kind of teaching White blackboard comprises transparent panel face, framework, fluorescent tube, it is characterized in that: transparent panel face front is coated black grease, back side sanding and painted white, it is contained on the framework, and fluorescent tube is contained on the muscle of framework at the transparent panel face back side.

Images