CN2228340Y - Multi-function electronic nearsight prevention device - Google Patents

Abstract

The utility model relates to a multi-function electronic myopia prevention device, which can be used for keeping correct reading and writing posture for primary and middle school students, and the utility model can prevent myopia phenomenon and humpback phenomenon. The utility model is composed of a cover-turning type box body which is provided with a sound and light alarm circuit, and a block of pressure sensing plate which can be installed on the front porch of a desk; the sensing plate is communicated with the alarm circuit in the box body through the connection line of a plug. When the chest of the human body is supported on the sensing plate, the alarm circuit is triggered by a sensing signal to emit sound and flashing to alarm to prompt users to keep correct reading and writing posture.

Description

The multifunction electronic nearsight prevention device

This utility model belongs to eye health assistive device technical field, relates to the electronics nearsight prevention device that a kind of primary and secondary students of helping keep correct read-write posture.

Keep and form the reading and writing posture that holds water to teenager particularly primary and secondary students be vital.According to relevant medical science demonstration, healthy human eye during object, does not need eye muscle to regulate substantially object is imaged on the retina well beyond watching 5～6 meters, but, will regulate by eye muscle during with interior object 5 meters of observations, and at this moment eye muscle is contraction state.Object is from must be near more, and eye muscle shrinks just strong more, is easy to generate fatigue more.Primary and secondary students are in body development period, often unconscious croucs during reading and writing, and chest along (even tiltedly lying prone on the table), makes eyes very near apart from books near table, in the course of time, promptly causes hypometropia, also easily causes the flexural deformation of spinal column simultaneously.At present, because of the sighting distance of reading and writing and fault cause phenomenons such as primary and secondary students' visual deterioration and the crooked hunchback of cervical vertebra, caused the extensive attention of various circles of society.Past, though also taked some measures to be corrected, adjust the tables and chairs height as school and make it supporting, or utilize enforceable rectifier for reading and writing posture (as body support machine, retaining jaw device etc.) this type of phenomenon, but owing to do not have the guided bone correcting, thereby also all fail to get a desired effect.

The purpose of this utility model is to provide a kind of scientific structure, intelligentized eye health instrument-multifunction electronic nearsight prevention device easy to use, in order to overcome the defective of prior art, fully guarantee particularly correct sighting distance and the posture during primary and secondary students' reading and writing of user, and then guarantee the normal development of their vision health and even health spinal column effectively.

From the angle of school hygiene's health science, generally require the student from form for a short time when study just sitting, straighting up and keep one's chin up, chest is from least 10 centimeters of desktops and the eyes good habit from about 30 centimeters of books.This utility model promptly is to design for satisfying this requirement.It is made of the logical pressure sensitive plate in warning circuit Electricity Federation in the flip-shell box body that is provided with acousto-optic warning circuit in and one and the box body, in the use, the pressure sensitive plate is installed in the forward position of desk.After circuit is connected, one when those who read and write's chest after live tablet, induced signal promptly triggers warning circuit and sends the sound and light alarm signal, keeps correct posture to point out the those who read and write.When making, box body is made the writing case form with Reading rack, on box body, join simultaneously with illuminating lamp jewelry, make it become the ideal schooling apparatus of handsome in appearance a, diverse in function.

Compared with prior art, that device described in the utility model has is simple in structure, easy to use, cost is low and intelligent degree advantages of higher, for user primary and secondary students' user particularly, life-time service can once you form a habit, it comes natural to you, form correct read-write sighting distance and posture, guarantee that it grows up healthy and sound in all respects.

Below with reference to accompanying drawing this utility model content is described further.

Fig. 1 is the utilization structure sketch map of an embodiment of this utility model.

Fig. 2 is the working line figure of the interior set acousto-optic warning circuit of box body among Fig. 1.

As shown in the figure, this multifunction electronic nearsight prevention device has a shape is installed in student's desk forward position like the box body 1 of common plastics writing case and available screw pressure sensitive plate 2, in box body 1, be provided with an acousto-optic warning circuit, this circuit is communicated with pressure sensitive plate 2 by a removable plug line 3, and the pick off on the pressure sensitive plate 2 can be a pressing type key switch.In the box body set acousto-optic warning circuit as shown in Figure 2, it is made of power switch circuit 4 and sound light control circuit 5, described power switch circuit comprises one by commutation diode D ₁～D ₄And K switch ₁The logical alternating current switching circuit of forming and one are by battery E and K switch ₂The dc switch circuit that constitutes, described sound light control circuit 5 is LM556 dual time-base ic IC by model ₁, voice storage integrated chip IC ₂, speaker Y, flash of light warning light L ₂And resistance R ₂～R ₆, capacitor C ₃～C ₇Constitute a wherein integrated IC ₁The 6th foot and tablet trigger telegraph key K ₅Connect, the 9th foot is through resistance R ₅With warning light L ₂Connect, the 14th foot is by a K switch ₄Insert the positive terminal of speaker Y, speech chip IC ₂Trigger end and tablet trigger telegraph key K ₅Connect and drive speaker Y work simultaneously.During actual the use, use plug line 3 with the acousto-optic warning circuit in the box body 1 and the key switch K of tablet 2 ₅Connected, look and adopt alternating current or the galvanic situation K that closes a switch ₁Or K ₂, K then closes a switch ₄When user crouch down owing to health too leans forward table along on after, tablet 2 is squeezed, key switch K ₅Connect, so integrated IC in the sound light control circuit 5 ₁And IC ₂Work drives the speaker Y and the flash lamp L that are located on box body 1 side plate ₂Send voice and bright alarm signal, point out user will note the read-write posture that keeps correct.Under general classroom learning environment, disturb for preventing voice, can be with K switch ₄Disconnect and make speaker Y not send the sound.Except that above-mentioned structure is provided with, also can connect one at battery E the two poles of the earth in sound light control circuit 5 by K switch ₃With midget lamp L ₁The lighting circuit of forming 6 can solve the temporary lighting problem of meeting when the student learns after having a power failure like this in classroom or family.Number in the figure 7 is renovated spring book clamp on the inner panel for being located at box body 1, also can be provided with one and push and plug slot type curriculum schedule (being hidden by books among Fig. 1) on renovating inner plate surface; Label 8 is for being located at the switch (K of box body 1 front side ₁～K ₄) key position plate; 9 is a dial-type week schedule display window.

Claims (4)

1, a kind of primary and secondary students of helping keep correct read-write posture and prevent its multifunction electronic nearsight prevention device near-sighted and bow-backed phenomenon, it is characterized in that it constitutes by being provided with the flip-shell box body (1) of acousto-optic warning circuit and pressure sensitive plate (2) that one can be installed in the desk forward position in one, tablet (2) is by plug line (3) and the interior warning circuit of box body (1) UNICOM.

2, electronics nearsight prevention device as claimed in claim 1 is characterized in that acousto-optic warning circuit set in the box body is made of power switch circuit (4) and sound light control circuit (5), and wherein power switch circuit comprises one by commutation diode D ₁～D ₄And K switch ₁The logical alternating current switching circuit of forming and one are by battery E and K switch ₂The dc switch circuit that constitutes, sound light control circuit (5) is LM556 dual time-base ic IC by model ₁, voice storage integrated chip IC ₂, speaker Y, flash of light warning light L ₂And resistance R ₂～R ₆, capacitor C ₃～C ₇Constitute, wherein IC ₁The 6th foot and tablet trigger telegraph key K ₅Connect, the 9th foot is through resistance R ₅With warning light L ₂Connect, the 14th foot is by a K switch ₄Insert the positive terminal of speaker Y, speech chip IC ₂Trigger end and tablet trigger telegraph key K ₅Connect and drive speaker Y work simultaneously.

3, electronics nearsight prevention device as claimed in claim 2 is characterized in that battery E the two poles of the earth connect one by K switch in sound light control circuit (5) ₃With midget lamp L ₁The lighting circuit of forming (6).

4, electronics nearsight prevention device as claimed in claim 1 is characterized in that renovating at box body and is provided with an auxiliary spring book clamp (7) on the inner panel.

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