CN2278395Y - Slide show blackboard-writing teaching aid - Google Patents

Abstract

The utility model belongs to a novel slide show blackboard-writing teaching aid. The utility model is mainly composed of a filament lamp, a light-gathering cover, a convex lens, a glass sliver, and a sunshade. The key is composed of in that strong point light source is utilized, the slide show blackboard-writing method replaces the ordinary blackboard writing by chalk. The utility model has the advantages of reasonable design, simple manufacturing technique, convenient operation, labour saving in writing, sanitation and cleanliness, no powder pollution, and clear words and images on the blackboard. The vision of the teachers and the students can be protected, and the physical and mental health of the teachers and the students can be kept when the utility model is used for a long time. The damage to the bodies and the minds from the chalk can be avoided absolutely. The utility model can be widely used for all schools and universities. The utility model is a novel blackboard-writing teaching aid.

Description

Magic lantern Repeatedly-usable board for writing educational instrument

The utility model belongs to a kind of novel writing on the blackboard teaching aid.

Big both at home and abroad at present, the blackboard for education that middle and primary schools generally use, it is wooden blackboard, Glass blackboard, cement blackboard etc., but all adopt chalk writing, the Main Ingredients and Appearance of chalk is a lime, because chalk is to do matter, when the neutralization of writing on the blackboard process erases the board, the chalk foam flies upward everywhere, polluted classroom environment, make Faculty and Students all breathe the air that chalk pollutes, it is reported, for many years aged teacher particularly is engaged in teaching, breathing problem is in various degree all arranged, illness in eye and skin disease etc., blackboard also is not easy to wipe clean in addition, during writing on the blackboard, makes the student look very unclear again, long-time eye muscle is easy to fatigue, cause student eyesight undesired, have a strong impact on the healthy of Faculty and Students, numerous teachers urgently wish to have a kind of novel Repeatedly-usable board for writing educational instrument to come out.

The purpose of this invention is to provide a kind of junior that utilizes, the method for hand-written projection upper plate replaces the magic lantern Repeatedly-usable board for writing educational instrument of common writing on the blackboard.

The utility model mainly contains: 1. incandescent lamp 2. snoots 3. convex lens

4. glass slit 5. hand-written carriage 6. scrubbing brushes 7. fixed screws 8. light shields

9. saturating word figure light exit 10. is gone into viewport and is constituted.Key is that polishing single radial cut snoot (2) rear portion is equipped with two convex lens (3) in the middle part of incandescent lamp (1) is installed in the cuboid, at the preceding light shield (8) that is connected with of snoot (2), the top has rectangle to go into viewport (10), there is the saturating word of rectangle in the front, figure light exit (9), the top of light shield inside are equipped with roller scrubbing brush (6), and the middle part is equipped with hand-written carriage (5), the bottom is equipped with glass slit (4), all links to each other with the fixed screw (7) of its both sides by fixing.Glass slit (4) be by 8 blocks of strip glass with many wire and screw (7) bottom in light shield (8) that is linked and packed, glass slit (4) can be rotated 0--360 degree angle.Hand-written carriage (5) is a rectangle structure, and the centre has a rectangle to show mouth.Key of the present invention is with incandescent lamp (1) light of penetrating, be organized into a branch of parallel high light by convex lens (3), light sees through when scribbling the glass slit (4) of black ink, the teacher writes in glass slit with stylus, (the stroke place of word does not have printing ink) word, figure can reflect on over there the complete pitch-dark plate, reach the purpose of writing on the blackboard.When the utility model uses, this assiatant instrument is placed on above the desk blackboard, when the teacher needs writing on the blackboard, be sitting in desk and simultaneously open incandescent lamp (1), hold stylus, eye fixation is gone into viewport (10), hand is placed on the hand-written carriage (5), write and be coated with on the glass slit of full black ink (4), write and finish, (4) are push-jump to saturating word, figure light exit (9) is located, the word figure writing on the blackboard of writing just is presented on the blackboard on opposite, changes plate as need, can locate to scrubbing brush (6) glass slit (4) is push-jump, scrubbing brush can be flat with the printing ink brush, push-jump again to the original place, the push-jump tour of glass slit (4) is got ready and time is used again.

Description of drawings:

1. incandescent lamp 2. snoots 3. convex lens 4. glass slit

5. hand-written carriage 6. scrubbing brushes 7. screws 8. light shields

9. saturating word, figure light exit 10. is gone into viewport

Fig. 1 is the utility model generalized section

Fig. 2 is the utility model front schematic view

Fig. 3 is the utility model glass slit schematic diagram

Fig. 4 is the hand-written carriage schematic diagram of the utility model

The utility model has the advantage of, mainly by incandescent lamp, snoot, convex lens, Glass slit, light shield consist of, and key is to utilize junior, hand-written projection upper plate Method replace common chalk writing. The utility model is reasonable in design, and manufacturing process is simple, Easy for operation, to write laborsavingly, clean hygiene does not have powder to pollute, the blackboard literal Figure is clear, and long-term use can be protected the eyesight of Faculty and Students, and physical and mental health is stopped Chalk to the infringement of Faculty and Students bodies and minds, be widely used in ten million big primary school, the whole nation, It is a kind of novel teaching board teaching aid.

Claims (3)

1. magic lantern Repeatedly-usable board for writing educational instrument, by incandescent lamp (1), snoot (2), convex lens (3), light shield formations such as (8), it is characterized in that polishing single radial cut snoot (2) rear portion is equipped with incandescent lamp (1) in cuboid, the middle part is equipped with two convex lens (3), at the preceding light shield (8) that is connected with of snoot (2), the top has rectangle to go into viewport (10), there is rectangle phantom view light exit (9) in the front, the light shield inner upper is equipped with roll-type scrubbing brush (6), the middle part is equipped with hand-written carriage (5), and the bottom is equipped with glass slit (4) and all is connected to a fixed with the fixed screw (7) of its both sides.

2. magic lantern Repeatedly-usable board for writing educational instrument according to claim 1 is characterized in that glass slit (4) is to be linked and packed with many wire and fixed screw (7) by 8 blocks of strip glass to form, rotatable 0--360 angle.

3. magic lantern Repeatedly-usable board for writing educational instrument according to claim 1 is characterized in that hand-written carriage (5) is a rectangle structure, and the centre has a rectangle to show mouth.

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