CN2911821Y - Infrared sensing myopia indicator - Google Patents

Abstract

The utility model discloses an infrared sensing myopic alarm, which requires no earphone, and comprises a half-circle hoop (28), a box (9) comprising an infrared sensor, a sound alarming system, and a battery, and a joint block (22), wherein the joint block (22) and the half-circle hoop (28) constitute a sliding connection mechanism and the box (9) can move along the arc surface of the half-circle hoop (28) and can be connected at any position along the half-circle hoop (28).To use the device, the user can wear the half-circle hoop (28) and move the box (9) along the arc surface of the half-circle hoop (28) to the position in front of the ears or forehead to turn on the power, and adjusts the reflective distance of the infrared sensor to the close work prevention distance. In case that the visual distance is lower than the adjusted distance, the box (9) sounds an alarm whereas in case that the visual distance is higher than the adjusted distance, the box (9) keeps silence. The utility model is used for prevention of student myopia.

Description

Infrared sensing eye myopia prompting device

Technical field

The utility model relates to a kind of infrared sensing eye myopia prompting device, especially the infrared sensing eye myopia prompting device of being made up of infrared sensor and acoustic alarm system.

Background technology

Look closely to read be the main cause that forms myopia, for pre-myopia prevention, hypometropia prevention device has appearred, a kind of in the market acoustic alarm myopia of student prevention device of controlling by mercury cut-off on the ear that hangs over, when the end user bows when reaching certain inclination angle, mercury cut-off powers alarm, and the mode at this control head part inclination angle can not be controlled the distance of human eye to books effectively, when eyes far away apart from books, if the alarm of bowing can be reported to the police; When eyes are nearer apart from books is when myopia, if do not bow, alarm is not reported to the police, and such misleading reduces this myopia preventer fiduciary level, and pre-myopia prevention effect is not obvious.

On August 27th, 2003, notification number CN2569266Y China utility model patent instructions disclosed a kind of infrared and pre-myopia prevention eye protector of ultrasound wave sensing, this device has comprised a pileum or hemicycle hairpin, infrared and ultrasonic sensor and light, the assembling plastic casing of vibration alarming system is inlaid in the middle part of pileum or hemicycle hairpin, earphone is installed in the side lower part position of pileum or hemicycle hairpin, when putting on pileum or hemicycle hairpin, the plastics machine box of sensor is in end user's head forehead, earphone is in by end user's the ear, energized, sensor is faced toward the face of looking, in case sensor and the distance of looking face are less than the distance that adjusts, warning system is reported to the police immediately.This infrared or ultrasound wave sensing eye protector can make eye keep eye to protect sighting distance with myopia prevention.But, this eye protector infrared or the assembling plastic casing of ultrasound wave sensing and the different parts that earphone is installed in pileum or hemicycle hairpin respectively, draw the long lead of cloth at pileum or hemicycle hairpin inside from the assembling plastic casing to earphone, in order to draw the cloth lead, pileum needs double layer material to sew up interior empty threading, when making, hairpin should open the lead-in wire groove, want sealing groove after the wiring, therefore this eye protector production technology is comparatively complicated, moreover, the assembling plastic casing fixedly is inlaid in the middle part of pileum, and underaction is convenient during use.

The utility model content

The technical problems to be solved in the utility model provides and a kind ofly earphone is not set in addition, does not draw cloth than long lead, and technology is easy, more flexible infrared sensing eye myopia prompting device during use.

In order to solve above-mentioned technical matters, first kind of scheme of the utility model infrared sensing eye myopia prompting device comprises a semicircle hoop and the machine box of being made up of infrared sensor, acoustic alarm system and battery and connects piece with this machine box links together, the described piece that connects is connected with the semicircle hoop and is provided with sliding connection structure, and described machine box can move and be connected the arbitrary position on the semicircle hoop length along the lonely face of semicircle hoop.

This sliding connection structure can be at the described back side that connects piece the relative sliding recess of a pair of groove to be set, and the semicircle hoop inserts and is placed in described this sliding recess that connects piece from an end, and the described piece that connects can move along the lonely face of semicircle hoop.

This sliding connection structure can also be that the opposing sliding recess of a pair of groove is set at the back side that connects piece, have a strip groove in the lonely face width degree of semicircle hoop centre position along length, the described piece back side opposing sliding recess of groove that connects is placed in this strip groove of semicircle hoop, and the described piece that connects can move along the lonely face of semicircle hoop.

Connecing piece, to move the position that resides on the semicircle hoop length be that the machine box is connected the position on the semicircle hoop:

Moving the sidepiece that movable contact block resides in the semicircle hoop---the machine box is connected the sidepiece of semicircle hoop.

Moving the middle position that movable contact block resides in semicircle hoop length---the machine box is connected the middle position of semicircle hoop length.

This section continuation is made an explanation to above scheme: infrared sensor is reflective infrared remote-control emitter and receiver, the acoustic alarm system is made up of music integrated circuit and electroacoustic component, the electronic devices and components of infrared sensor harmony warning system and battery branch hyte are contained in the box and become the machine box, the front face of machine box is provided with transmitting aperture and receiver hole, the machine box is connected the front that connects piece, the sliding recess that connects the piece back side is connected on the lonely face of semicircle hoop, pushing away movable contact block makes the machine box reside in the sidepiece of semicircle hoop---and the machine box is connected the side of semicircle hoop, during use, semicircle hoop opening down, from the beginning down wear the top, adjust up and down by the ear that the machine box places the end user, the transmitting aperture of machine box upper sensor and receiver hole are positioned at the place ahead of machine box, infrared ray is to end user's direction of visual lines emission, when the eye that accesses less than sensor apart from the distance of looking face when human eye is protected reflective distance, the warning of sounding of acoustic alarm system in the machine box, the prompting end user draws back eyes and the distance of looking face, when the eye that accesses greater than sensor apart from the distance of looking face when human eye was protected reflective distance, the acoustic alarm system was in static state.

As a kind of improvement of first kind of scheme of the utility model, connect the piece front and have axis hole; Be provided with the hollow cylinder that evagination has only an end face in the bottom surface of machine box, the end face of hollow cylinder is provided with the diameter circular shaft littler than hollow cylinder diameter, and peripheral hardware a slice circular shaft locking plate bigger than diameter of round spindle, the circular shaft of machine box bottom surface is installed in the axis hole that connects the piece front, the circular shaft locking plate is fastened on the circular shaft end face, the machine box with connect piece for being rotationally connected such setting, make the front face of machine box can do circumferentially to rotate, adjust the sensing orientation of infrared sensor.

In order to solve above-mentioned technical matters, second kind of scheme of the utility model infrared sensing eye myopia prompting device comprises a semicircle hoop and the machine box of being made up of infrared sensor, acoustic alarm system and battery, one wall of described machine box is provided with sliding recess, the semicircle hoop inserts from an end and is placed in this sliding recess of described machine box one wall, and described machine box can move and be connected the arbitrary position on the semicircle hoop length along the lonely face of semicircle hoop.Semicircle hoop of this programme and infrared sensor, acoustic alarm system make identical with first kind of scheme with the machine box that battery is formed, the scheme of technical solution problem is similar, but this programme does not connect block part, so structure, the technology of second kind of scheme of the utility model are simpler.

Adopted after two kinds of schemes of the utility model infrared sensing eye myopia prompting device, earphone has not been set in addition, do not drawn the long earphone lead of cloth, simple in structure, technology is easy, so production and assembly are very convenient.The machine box is connected the hollow cylinder that is provided with machine box bottom surface with the semicircle hoop, and the machine box is gone out to extension from the lonely face of semicircle hoop, avoids ear temples or hair to disturb ultrared transmitting and receiving during use; The circular shaft of machine box bottom surface is connected with axis hole on connecing the piece front, can adjust the sensing orientation of infrared sensor; Connecing piece moves resident along the lonely face of semicircle hoop, thereby can adjust machine box link position on semicircle hoop length and adjust the machine box in the different use location of head part, can also adjust the high and low position on machine box side before end user's ear, to be suitable for the end user of different head dummy sizes, second kind of scenario-frame of the present utility model is firmly simple more, be fit to little child of age and use, so the utility model infrared sensing eye myopia prompting device uses and carries very convenient.

Description of drawings

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

Fig. 1 is the Infrared Remote-Control Sending/reception driving circuit figure of the utility model infrared sensing eye myopia prompting device.

Fig. 2 is the printing plate figure of circuit shown in Figure 1.

Fig. 3 is the skeleton view that the utility model infrared sensing eye myopia prompting device is removed the machine box of partly facing the wall and meditating.

Fig. 4 is the underside perspective view of machine box shown in Figure 3.

Fig. 5 is the circular shaft locking plate skeleton view of machine box shown in Figure 4 bottom surface circular shaft.

Fig. 6 is the skeleton view that first kind of scheme of the utility model infrared sensing eye myopia prompting device connects piece.

Fig. 7 is the one-piece construction synoptic diagram of first kind of scheme of the utility model infrared sensing eye myopia prompting device.

Fig. 8 is the another kind of sliding connection structure synoptic diagram of first kind of scheme of the utility model infrared sensing eye myopia prompting device.

Fig. 9 is the machine box of first kind of scheme of the utility model infrared sensing eye myopia prompting device and connects piece side connection diagram.

Figure 10 is the diapire face skeleton view of the box of machine as shown in Figure 3 of second kind of scheme of the utility model infrared sensing eye myopia prompting device.

Figure 11 is the one-piece construction synoptic diagram of second kind of scheme of the utility model infrared sensing eye myopia prompting device.

Embodiment

With reference to Fig. 1 circuit, the components and parts of infrared sensor emission, receiving circuit are installed on the bar printing plate, as shown in Figure 2.Provide in circuit elements device model and the Parameter Map 1, choose by the scale value among Fig. 1 during making, Fig. 2 right part part is the partly welding position of components and parts of sensor emission; Left part part is that sensor receives partly components and parts welding position, the upright printed panel left end edge that is contained in of power switch S, R3 and R5 select small-sized potentiometer to be installed in the position that Fig. 2 marks, the light emitting diode D6 of acoustic alarm indication will exceed one section when welding, its leading edge is stretched out from the box face, and the lead-in wire of power supply and sound signal is drawn by the track road surface.

As shown in Figure 3, the printed panel 2 of infrared sensing and driving warning circuit is installed in the front of the box of making of plastics or metal 1, the front face of box 1 has transmitting aperture 3, receiver hole 4, insert the infrared transmitting tube D2 that is welded in printed panel 2 relevant positions and send infrared light from transmitting aperture 3 ejaculations, as be reflected, then enter from receiver hole 4, the infrared receiving terminal IC1 that is inserted into printed panel 2 relevant positions receives; Box 1 rear is a battery flat 5, and packed battery is powered to the utility model; In box 1 front, have three holes, the release handle of potentiometer R3 and R5 is relative under the hole on the printed panel 2, and reflective distance is adjusted button 6, volume adjusting knob 7 is set on the release handle of potentiometer R3 and R5, and the light emitting diode D6 of acoustic alarm indication stretches out from another hole; Box left side wall is opened an oblong aperture, and the toggle of power switch 8 is installed on the switch S of hole from then on stretching out and dials on the handle; The power supply lead wire that printed panel 2 circuit surfaces are drawn connects on the battery pole piece that is welded in the battery flat 5, and the lead-in wire of IC2 sound signal connects on the piezo or earpieces that is welded in box 1 inside.

Referring to Fig. 4, rear, box 1 bottom surface is opened one and can be held the oblong aperture that battery is put into, and battery hatch 10 is buckled on the hole; Front, box 1 bottom surface is provided with the hollow cylinder 11 that has only an end face from the bottom surface evagination, the end face of hollow cylinder 11 is provided with the diameter circular shaft 12 littler than hollow cylinder diameter, circular shaft 12 and hollow cylinder 11 concentrics, away from sidewall one side that power switch 8 is arranged positive stop key 14 is set at circular shaft 12, on circular shaft 12 steps with respect to positive stop key 14 the opposing party positioning bead 13 is set, positioning bead 13 is arranged on by cutting lonely the seam on the shell fragment that surrounds in three weeks of step surface, circular shaft 12 end face centers are provided with a coil spring hole 15 that the end is arranged, spring hole 15 is close to towards two of box 1 front and rear wall and is had the gong silk and draw hole 16,17, trailing edge at step, cut an osculum and make the penetrable sound hole (not shown), electroacoustic component such as piezo or earpieces are placed in the hollow cylinder 11, and the box 1 after the assembling is a machine box 9 of the present utility model like this.

Fig. 5 is the circular shaft locking plate skeleton view of machine box 9 bottom surface circular shafts 12, and circular shaft locking plate 18 is circular, and diameter is greater than the diameter of circular shaft 12, and the center of circular shaft locking plate 18 has hoodle hole 19, and it is identical that its diameter and circular shaft 12 end face upper springs are cheated 15 diameters; Be close to for 19 liang in the hoodle hole, bores gong silk hole 20,21, and it is suitable that the gong silk of they and circular shaft 12 end faces draws hole 16,17.

Referring to Fig. 6, the longitudinal profile that connects piece 22 fronts can be made into square, and octagon or circle connect piece 22 back sides relative sliding recess of a pair of groove 23 vertically is set; The center that connects piece 22 fronts 24 is provided with and the identical connection axis hole 25 of machine box 9 bottom surface circular shafts 12 diameters, turn right along the hole week of axis hole 25 belows stopper slot 26 is set, past left side above axis hole 25, adjacent bores week is bored a registration hole 27, a stopper slot 26 and a registration hole 27 open with the lonely line of axis hole 25 concentrics on, and suitable with positive stop key 14, positioning bead 13 on the step on the circular shaft 12.

Certainly, position and top are turned right toward leftward position in the below that a stopper slot 26 and a registration hole 27 can not be arranged on axis hole 25, they can be arranged on the lonely line of axis hole 25 concentrics on other position, correspondingly the positive stop key on the circular shaft 12 14 and positioning bead 13 positions on the step will adapt to the change of stopper slot 26 and pilot hole 27.

The utility model be provided with one shown in Figure 7 with plastics or metal semicircle hoop 28, the outer lonely face of semicircle hoop 28 is opened the row shallow bore hole of the lonely end 29 discontinuously along length, shallow bore hole 29 is opened in the centre position of semicircle hoop 28 lonely face width degree, and is extended to the other end from an end.

Fig. 7 is the one-piece construction synoptic diagram of first kind of scheme of the utility model, machine box 9 bottom surface circular shafts 12 are fit in the axis hole 25 that connects piece 22 fronts 24, positive stop key 14 on the circular shaft 12 is plugged in the stopper slot 26 of axis hole 25 belows, positioning bead 13 on the step hits a pilot hole 27 that connects piece 22 positive 24 axis holes 25 tops, external circular shaft locking plate 18 is placed on circular shaft 12 end faces from connecing piece 22 back sides, gong silk hole 20 on the circular shaft locking plate 18,21 with circular shaft 12 end faces on the gong silk draw hole 16,17 is relative, with self tapping gong silk circular shaft locking plate 18 is fastened on circular shaft 12 end faces, like this, hoodle hole 19 on the circular shaft locking plate 18 connects with the spring hole 15 of circular shaft 12 end faces, a little spring is put into spring hole 15, place a hoodle on the spring, semicircle hoop 28 inserts from an end and connects the sliding recess 23 at piece 22 back sides, the outer lonely face of semicircle hoop 28 was pressed from hoodle, hoodle falls into the shallow bore hole of the lonely end 29 on the semicircle hoop 28 outer lonely faces, avoiding connecing piece 22 is free to slide on semicircle hoop 28, in order to prevent to fall outside machine box 9 is from semicircle hoop 28, buckle the end button 30 that the longitudinal section is U-shaped plastics or rubber system in the two ends of semicircle hoop 28.

The one-piece construction of the first kind of scheme of the utility model after assembling like this: the circular shaft 12 at machine box 9 back sides is installed in the axis hole 25 that connects piece 22 fronts 24, and the front face of machine box 9 can be done around circular shaft 12 centers circumferentially to rotate from adjusting the sensing orientation of sensor; Positive stop key 14 is plugged in the stopper slot 26, and positioning bead 13 hits pilot hole 27, to the circumferential rotation of machine box 9 and the orientation of adjusting can limit; Semicircle hoop 28 plug-in mountings are gone into and are placed in the sliding recess 23 that connects piece 22 back sides, when external force pushes away movable contact block 22, connect piece 22 and can shift to the other end from an end of semicircle hoop 28, connect piece 22 in the position on semicircle hoop 28 length with adjustment whereby along semicircle hoop 28 lonely faces---promptly be adjustment machine box 9 position on semicircle hoop 28 length.---make the machine box 9 resident arbitrary positions that are connected on semicircle hoop 28 length.As on the classroom time, can use hand push motivation box 9, make machine box 9 be connected semicircle hoop 28 sidepieces 35, be worn over head and go up the back and adjust up and down along semicircle hoop 28 lonely faces according to end user's head size that machine box 9 is put before end user's ear is other, turn down the warning volume can avoid noise other people; As at home, can in semicircle hoop 28 length, move at position 31 with hand push motivation box 9, machine box 9 is connected in semicircle hoop 28 length on the position 31, when putting on the utility model like this, machine box 9 is put the forehead the end user, can open big warning volume, allow the household participate in supervising end user's operating position, equally, in the kindergarten, allow preschool teacher's school supervise the end user.

Fig. 8 is the another kind of sliding connection structure synoptic diagram that this reality has novel first kind of scheme, connects piece 22 back sides opposing a pair of sliding recess 23 of groove vertically is set; Semicircle hoop 28 lonely face width degree centre positions have the strip groove 32 that the other end opening is sealed in one one end along length, at the interior lonely face of semicircle hoop 28.Sleeper beam 33 is set to be opened outside both sides to prevent the semicircle hoop, sleeper beam 33 has by the one side of strip groove 32 can allow the horizontal breach that passes through of sliding recess 23 I-shapeds, semicircle hoop 28 openings one end inserts in the sliding recess 23 the opposing sliding recess 23 of slide block 22 back side grooves is placed in the strip groove 32, when external force pushes away movable contact block 22, connect piece 22 and can shift to the other end from an end of semicircle hoop 28, the front that connects piece 22 is provided with identical with Fig. 6, flat shaft lock sheet 18 empty frame is from the side inserted, and connects piece 22 back sides and has fabrication hole and be used to stretch into bottle opener.

This reality has in the novel above embodiment, it is a rectangular parallelepiped that machine box 9 is not limited to, it can also be the molding body of various animals, these special-shaped machine boxes 9 can be connected front, side or the upper and lower end face that connects piece 22, connected mode is fastening with splicing or gong silk, connect piece 22 and be connected with special-shaped machine box 9 again with after semicircle hoop 28 is connected, the thickness face that has the machine box wall of transmitting aperture 3 and receiver hole 4 or special-shaped machine box wall and a semicircle hoop 28 substantially with towards.Fig. 9 is the machine box and meet the embodiment that piece 22 sides are connected, machine box 9 fronts have transmitting aperture 3, receiver hole 4, its back side with connect piece 22 sides and be connected, it is the animal-shaped of front that this embodiment can be applicable to machine box 9, transmitting aperture 3 and receiver hole 4 are as animal eyes, when machine box 9 is the galloping horse moulding, increase the thickness that connects piece 22, holding in the palm the horse belly with the upper surface that connects piece 22---this is the right flank with the upper surface junctor box 9 that connects piece 22.

Second kind of scheme embodiment of the utility model infrared sensing eye myopia prompting device:

Figure 10 is the machine box diapire face figure that this reality has second kind of scheme of new infrared sensing eye myopia prompting device, the installation of the front of machine box 9, front face, power switch 8, battery flat 5 and printed panel 2 and Fig. 3 and aforementioned identical, but the described method of Fig. 3 is implemented in the by specification; Machine box shown in Figure 10 9 diapire face rears are battery hatch 10, the position vertically is provided with a pair of sliding recess 23 in face of machine box 9 diapires, the center of 23 liang of groove joint faces of sliding recess is provided with hoodle 34, and hoodle 34 is arranged on the slot end that groove joint face three all slots form the strip shell fragment.This programme have one with the same semicircle hoop 28 of first kind of scheme of the utility model, semicircle hoop 28 usefulness plastics or metal manufacturing, lonely face is opened shallow bore hole of the lonely end 29 outside it, semicircle hoop 28 inserts from an end and is placed in the sliding recess 23 of machine box 9 diapire faces, the outer lonely face of semicircle hoop 28 was pressed from hoodle 34, hoodle 34 falls into the shallow bore hole of the lonely end 29 of semicircle hoop 28 outer lonely faces, when external force promotes machine box 9, machine box 9 can move along the lonely face of semicircle hoop 28 and the resident arbitrary position that is connected on semicircle hoop 28 length, in order to prevent to fall outside machine box 9 is from semicircle hoop 28, the two ends of semicircle hoop 28 is buckled end button 30.

One-piece construction such as the Figure 11 of second kind of scheme of the utility model after forming like this.Semicircle hoop 28 plug-in mountings are gone into and are placed in the sliding recess 23 of machine box 9 diapire faces, machine box 9 can move along the lonely face of semicircle hoop 28 and make it resident middle position 31 or the resident sidepiece 35 that is connected semicircle hoop 28 that is connected semicircle hoop 28 length, because semicircle hoop 28 directly is connected in the sliding recess 23 of machine box 9 diapire faces, the one-piece construction of second kind of scheme is more firm, is fit to the child and uses.

In second kind of scheme embodiment of the utility model, sliding recess 23 is not limited to the diapire face that is arranged on machine box 9; Sliding recess 23 can also be arranged on the side wall surface of machine box 9, here explain with Fig. 9: sliding recess 23 is arranged on the left side wall 36 or the bottom side wall 37 of machine box 9, the sliding recess 23 that machine box 9 is set like this is with after semicircle hoop 28 is connected, the thickness face that has the machine box wall of transmitting aperture 3 and receiver hole 4 and a semicircle hoop 28 substantially with towards.

Plated circuit is divided into infrared emission, receives to drive alarm two partly.Referring to Fig. 1, triode T1, T2 constitutes free-running multivibrator by the positive feedback of capacitor C1, oscillation frequency is determined by capacitor C 1, R1 and R2 are the biasing resistors of triode, also influence oscillation frequency, after C1 determines, fine tuning R1, adjust frequency and be 38KHz, pulse current flows through infrared transmitting tube D2, D2 launches the infrared pulse light of 38KHz, this light appears with transmitting aperture 3, adjust the resistance that knob 6 is adjusted R3 by adjusting reflective distance, the electric current of infrared transmitting tube D2 of flowing through changes, the power of its consumption also changes, infrared light intensity also and then changes, thereby reaches the purpose of adjusting the infrared external reflection distance, and the infrared light of reflection enters the back from receiver hole 4 and received by IC1, preposition amplification through IC1 inside, amplitude limit amplifies, detection, and 2 pin from IC1 after the shaping are exported negative pulse, T3 conducting drive IC 2 work makes the electroacoustic component BL warning of sounding, pilot light is sent in light emitting diode D6 energising simultaneously, when IC1 does not receive the infrared light of reflection, and 2 pin of IC1 output high level, T3 ends, and electroacoustic component BL and light emitting diode D6 no current are by being in static state.

Because machine box 9 of the present utility model can be connected arbitrary position on semicircle hoop 28 length, semicircle hoop 28 is worn on end user's the head, machine box 9 can be selected to put before head part's ear other, temple, use positions such as neck sidepiece and neck middle part, on the classroom, optimal selection is that machine box 9 is put before left ear other, can regulate knob 7 with volume like this and turn volume down, in order to avoid noise other people, circular shaft 12 owing to machine box 9 bottom surfaces is installed in the axis hole 25 that connects piece 22 fronts again, the front face that makes machine box 9 have transmitting aperture 3 and receiver hole 4 can be done circumferential rotation, when the face of looking is a computer screen or when holding up books and reading aloud, rotate machine box 9 and make the nearly level emission of infrared ray facing to the endways face of looking; When the face of looking at the moment when looking squarely face---as writing on the table, rotation machine box 9 makes infrared ray to tiltedly launching down facing to the face of looking on the desktop, the use sensitivity that machine box 9 can improve infrared sensor in the use of multiple diverse location of head part and state, thereby more effectively pre-myopia prevention.During use, choose the position of machine box 9 on semicircle hoop 28, be worn over semicircle hoop 28 openings on the head down, stir power switch 8 energized, rotating reflective distance adjusts button 6 to access end user's eyes is 33 centimetres reflective distance apart from the face of looking, when human eye apart from the distance of looking face during less than the reflective distance that accesses, the warning of sounding of the piezo of acoustic alarm, the light emitting diode of the prompting of acoustic alarm simultaneously sends pilot light, only draw back human eye and make it greater than behind the reflective distance that accesses with the distance of looking face, warning system just is in silent status.The utility model is used for the pre-myopia prevention of student.

Parts of the present utility model can also adopt other structures and mode, as the sliding recess 23 that connects piece 22 can adopt one section square tube to replace sliding recess 23, and square tube is inserted in semicircle hoop 28 and is slided; The shape of machine box 9 is not limited to rectangular parallelepiped or animals shaped, and the geometric form that can be other is as circular, flowers shape, and printed panel in the box and battery are settled thereupon and changed, and such conversion all drops within the protection domain of the present utility model.

Claims (10)

1. infrared sensing eye myopia prompting device, comprise a semicircle hoop (28) and the machine box of forming by infrared sensor, acoustic alarm system and battery (9) and connect piece (22) with this machine box (9) links together, it is characterized in that: described piece (22) and the semicircle hoop (28) of connecing interconnects and is provided with sliding connection structure, and described machine box (9) can move and be connected the arbitrary position on semicircle hoop (28) length along the lonely face of semicircle hoop (28).

2. according to the described infrared sensing eye myopia of claim 1 prompting device, it is characterized in that: described sliding connection structure is that the described back side that connects piece (22) is provided with the relative sliding recess of a pair of groove (23), semicircle hoop (28) is placed in described this sliding recess (23) that connects piece (22), and the described piece (22) that connects can move along the lonely face of semicircle hoop (28).

3. according to the described infrared sensing eye myopia of claim 1 prompting device, it is characterized in that: described sliding connection structure is that the described back side that connects piece (22) is provided with the opposing sliding recess of a pair of groove (23), have a strip groove (32) at the lonely face of semicircle hoop (28) along the length of semicircle hoop (28), described piece (22) the back side opposing sliding recess (23) of groove that connects is placed in this strip groove (32) of semicircle hoop (28), and the described piece (22) that connects can move along the lonely face of semicircle hoop (28).

4. according to the described infrared sensing eye myopia of claim 1 prompting device, it is characterized in that: the described piece (22) positive (24) that connects is provided with axis hole (25); Described machine box (9) bottom surface is provided with hollow cylinder (11), this hollow cylinder (11) end face is provided with circular shaft (12), and peripheral hardware circular shaft locking plate (18), described circular shaft (12) is installed in the axis hole (25) that connects piece (22) positive (24), and circular shaft locking plate (18) is fastened on the end face of circular shaft (12).

5. according to the described infrared sensing eye myopia of claim 4 prompting device, it is characterized in that: described axis hole (25) is along being provided with stopper slot (26) hole week, and adjacent bores week is bored a registration hole (27); Positive stop key (14) and positioning bead (13) are set respectively on described circular shaft (12) and the step thereof, and positive stop key (14) is plugged in the stopper slot (26), and positioning bead (13) hits a pilot hole (27).

6. according to each described infrared sensing eye myopia prompting device in the claim 1 to 5, it is characterized in that: described machine box (9) is connected the sidepiece (35) of semicircle hoop (28).

7. according to each described infrared sensing eye myopia prompting device in the claim 1 to 5, it is characterized in that: described machine box (9) is connected the middle position (31) of semicircle hoop (28) length.

8. infrared sensing eye myopia prompting device, comprise that a semicircle hoop (28) and the machine box of being made up of infrared sensor, acoustic alarm system and battery (9) is characterized in that: a wall of described machine box (9) is provided with sliding recess (23), semicircle hoop (28) is placed in the sliding recess (23) of described machine box (9) one walls, and described machine box (9) can move and be connected the arbitrary position on semicircle hoop (28) length along the lonely face of semicircle hoop (28).

9. according to the described infrared sensing eye myopia of claim 8 prompting device, it is characterized in that: described machine box (9) is connected the sidepiece (35) of semicircle hoop (28).

10. according to the described infrared sensing eye myopia of claim 8 prompting device, it is characterized in that: described machine box (9) is connected the middle position (31) of semicircle hoop (28) length.

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