CN2441367Y - Short sightedness proof writing board - Google Patents

Abstract

The utility model discloses a myopia preventing writing board which is composed of a writing board 1, a limiting bracket 2 and a bearing frame 3, wherein the limiting bracket 2 forms a definite angle with the writing board, and the bearing frame 3 can bear the mandible of a student. The close range from the eyes of the student to a book is limited, and the function of myopia preventing can be realized. The utility model has the advantages of simple structure, convenient carrying, practicability, easy application and low cost.

Description

A kind of myopia prevention board

The utility model relates to a kind of myopia prevention board.

Myopia is a kind of children's frequently-occurring disease and a common disease, and children have suffered from after the myopia, needs wears glasses to correct eyesight, both influenced attractive in appearance, brought great inconvenience to living and studying again, this harmful effect is long-range, can continue people's all one's life even.Therefore, take effective measures to prevent that children from suffering from myopia is necessary.At present, the measure of myopia prevention illness in eye is more.As: the electronics myopia prevention device, when children saw written word, the eye distance books were too near, and this device will send sound prompting.Can remind the student too not near apart from books although it is so, but then, the sound has interrupted student's thinking, has disperseed the notice of study, and this device all is that volume is more portable mostly simultaneously.For another example, another kind of myopia prevention device its role is to prevent that health is too near desk when the student from reading a book, control the distance of student's eyes and books with this, yet the distance of health and desk is two different notions with the distance of eyes and books, thereby its effect is not very desirable.Also have, come correcting sitting postures with myopia prevention by wearing the back of the body braces of correcting attitude exactly, but wear for a long time, make student's muscle rigidity, be unfavorable for student's growth, also can seal out prickly heat summer.Therefore, but above-mentioned myopia prevention measure all has improvements.

The purpose of this utility model designs a kind of distance of passing through control student eyes to books exactly, thereby prevents myopia effectively, and portable myopia prevention board.

To achieve these goals, the utility model has been taked such measure, a kind of myopia prevention board, mainly form by board, end at board is fixed with the loose joint cover, and in the loose joint cover, the other end of limit bracket is connecting support bracket to an end of limit bracket by rotary axle box.

Take the utility model of above-mentioned measure, two states is arranged, a kind of state that is to use, another kind is a rounding state.When user mode, limit bracket and board shape have a certain degree, support bracket can prop up or support student's lower jaw, thereby have limited student's eyes to the mistake of books closely, play the effect that prevents myopia; When rounding state, limit bracket turns to board, facilitates like this and carries.The utility model is simple in structure, and is easy to carry, effective, implements easily, with low cost.

Below in conjunction with drawings and embodiments the utility model is described in further detail:

Fig. 1 is the utility model front view;

Fig. 2 is the utility model vertical view;

Fig. 3 is the utility model left view;

Fig. 4 is the utility model user mode reference view.

Shown in above-mentioned accompanying drawing, the utility model is made up of board 1, limit bracket 2 and support bracket 3, one end of board is being fixed loose joint cover 4 cylindraceous, " v " the font that limit bracket 2 is big up and small down, a little end has a turning cylinder 5, be enclosed within the loose joint cover 4, can overlap in 4 in loose joint and rotate, this moment, limit bracket 2 can be rotated thereupon, in addition, on this end, also has locating piece 6, when limit bracket 2 outwards opens to correct position, locating piece 6 just in time props up board 1, makes limit bracket 2 remain on the optimum position.Limit bracket 2 big ends are connecting support bracket 3, and the effect of support bracket 3 is to prop up or support student's lower jaw.Limit bracket 2 also can be rotated and draw in to the direction of board 1, and can be easy to carry this moment.Limit bracket 2 can have retractility, can stretch, and can reasonably adjust according to student's height like this.When the utility model uses, earlier limit bracket 2 is opened as above-mentioned position shown in the drawings, books can place on the board 1, support bracket 3 props up or support student's lower jaw, the eye distance books are near excessively in the time of so just can having limited the student and read a book, and prevented the bathomorphic generation of children effectively.

Claims (3)

1, a kind of myopia prevention board, mainly form by board, an end that it is characterized in that described board (1) is fixed with loose joint cover (4), and an end of limit bracket (2) is enclosed within the loose joint cover (4) by turning cylinder (5), and the other end of limit bracket (2) is connecting support bracket (3).

2, board according to claim 1 is characterized in that an end of limit bracket (2) is provided with locating piece (6).

3, board according to claim 1 is characterized in that limit bracket (2) can stretch.

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