CN2308879Y - Electronic indicating instrument for reading and writing distance - Google Patents
Electronic indicating instrument for reading and writing distance Download PDFInfo
- Publication number
- CN2308879Y CN2308879Y CN 97239755 CN97239755U CN2308879Y CN 2308879 Y CN2308879 Y CN 2308879Y CN 97239755 CN97239755 CN 97239755 CN 97239755 U CN97239755 U CN 97239755U CN 2308879 Y CN2308879 Y CN 2308879Y
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- earphone
- receiving box
- tube
- loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Images
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- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
The utility model relates to an electronic indicating instrument for reading and writing distance, in which an emission receiving box is installed in a left plastic fixing clamp via a rotation shaft; a loudspeaker is arranged in an earphone; a battery, a circuit board, and a voice board are arranged in a plastic case and are split with the earphone; the leg wires of an emission tube, a receiving tube and the speaker are connected with the circuit board through quads. The indicating earphone section has light weight, and is not limited by environment or place while in use, having convenient carrying, reliable working performance, small size, and easy popularization.
Description
The utility model relates to a kind of utensil-reading/writing distance electronic reminding instrument that is used to protect juvenile's eyesight, prevents myopia.
Protect juvenile's eyesight, prevent that myopia from being the important topic that current educational circles, medical circle are both at home and abroad extremely paid close attention to; In recent years, existing multiple juvenile's myopia-preventing instrument comes out, and mercury-wetted contact formula sight protectio instrument and desk lamp type myopia-preventing instrument are wherein arranged.The former is by mercury-wetted contact in the mercury tube that is fixed on head " connection " or ", and disconnection " is controlled; When head tilted, mercury flowed in pipe, makes mercury and contacting, and circuit working sends alarm.Carefully regulate when this kind utensil is worn, keep the optimum position, moreover when head swung, mercury also can out of trim, sends mistake and points out, and influences the student and learns energy to guarantee mercury and level; A kind of protecting instrument in back must regulate desk lamp and people's position relation when writing, and power consumption is bigger, carries also inconvenient.
The purpose of this utility model provides a kind of reading/writing distance electronic reminding instrument, and this prompting instrument volume is little, the power consumption few, and is split type because of it, earphone portion is in light weight, easy to use, reliable working performance.
The purpose of this utility model is to realize like this, this reading/writing distance electronic reminding instrument is by earphone bracket, a left side, right plastics geometrical clamp, loudspeaker, infrared transmitting tube, infrared receiving tube, plastic casing, quad, battery, wiring board, the voice plate, compositions such as emission receiving box, have circular hole in plastics geometrical clamp side, left side, emission receiving box one side is fixed with rotating shaft, rotating shaft is inserted plastics fixedly in the circular hole, in the emission receiving box diaphragm plate is set, the front of emission receiving box is divided into two parts, this two parts face is respectively inner concave, and a face has a hole, be equipped with an infrared receiving tube in the hole, have two holes on another face, be equipped with two infrared transmitting tubes in the hole; Rotating shaft upper edge axis has groove, and groove runs through the rotating shaft end face, and the rotating shaft front end is provided with projection; Wiring board, voice plate, battery are packed in the plastic casing, and infrared transmitting tube, infrared receiving tube payment to a porter and loudspeaker payment to a porter are connected with wiring board in the plastic casing by quad.
This prompting instrument earphone portion is in light weight, and the user can use for a long time, has only the user to hear because of loudspeaker sends verbal cue, so be not subjected to the restriction in environment, place; No matter students in middle and primary schools all can use in family or in the classroom.
Fig. 1 is the utility model synoptic diagram;
Fig. 2 is the plastic casing side view;
Fig. 3 is the circuit working principle schematic:
Fig. 4 is emission receiving box cut-open view.
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 3, by IG
1And peripheral circuit constitutes the about 40KH of frequency of operation
zModulation wave generator, O
1And BG
1The combined type photoelectric detector is carried out the detection of distance (setting value), IG
2Amplify IG in advance
3Finish frequency-selecting and amplification, and control BG
2On off state, IC
4, BG
3, circuit bank such as SP becomes sound prompt function, K switch is used for setting and needs the actual range that detects.When user's head and book, this distance during less than setting value, BG
1Just can receive by book, reach the light modulated that desktop reflects, through IG
2, IG
3Amplification and frequency-selecting after IG
3Export a low level, make BG
2By conducting state again for ending, thereby make IG
4Triggered and finished a work period, can be heard in the earphone (SP) " new line ", " and noted myopia " etc. voice suggestion, when the user lifted head, circuit stopped voice suggestion, entered monitor state, otherwise will export voice suggestion continuously.
As Fig. 1; 2; shown in 4; earphone portion is interted on a left side by slim steel ring set 1; right two plastics geometrical clamps 2; on 3; steel ring set 1 can be in plastics geometrical clamp inner side slot sliding extension; two infrared transmitting tubes 6 and one receive only pipe 7 and are contained in the emission receiving box 4; one side of emission receiving box 4 is fixed with rotating shaft 9; in the hole on the left of rotating shaft 9 is inserted on the plastics geometrical clamp 3; the rotating shaft front end has groove; groove runs through its front end end face; and rotating shaft 9 front ends are provided with projection; rotating shaft 9 can suitably be rotated in the hole; regulate emission angle; two infrared transmitting tubes 6 link to each other with loudspeaker payment to a porter in the left side earphone 11 from left side plastics geometrical clamp 3 inner side slots with a payment to a porter 10 that receives only pipe 7; link to each other with wiring board 15 by a quad 12 then; battery 14; in the plastic casings 13 of packing into such as wiring board 15 and voice plate; plastic casing 13 tops are provided with 2 gear switch knobs 16; its effect has two: one; as power switch; two; scalable sight protectio distance; 1 grade is 25 ± 3cm; 2 grades is 33 ± 3cm, and elastic force folder 17 is installed at plastic casing 13 back sides.
Claims (1)
1. reading/writing distance electronic reminding instrument, by earphone bracket, a left side, right plastics geometrical clamp, loudspeaker, infrared transmitting tube, receiving tube, the emission receiving box, quad, battery, wiring board, the voice plate, compositions such as plastic casing, loudspeaker is packed in the earphone of left side, it is characterized in that: have circular hole in a side plastics geometrical clamp side, emission receiving box one side is fixed with rotating shaft, rotating shaft is inserted plastics fixedly in the circular hole, in the emission receiving box diaphragm plate is set, the front of emission receiving box is divided into two parts, these two parts are respectively inner concave, and a face has a hole, an infrared receiving tube is installed in the hole, have two holes on another face, be equipped with two infrared transmitting tubes in the hole; Rotating shaft upper edge axis has groove, and groove runs through the rotating shaft end face, and the rotating shaft front end is provided with projection; Wiring board, voice plate, battery are packed in the plastic casing, and infrared transmitting tube, receiving tube payment to a porter and loudspeaker payment to a porter are connected with wiring board by quad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97239755 CN2308879Y (en) | 1997-06-26 | 1997-06-26 | Electronic indicating instrument for reading and writing distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97239755 CN2308879Y (en) | 1997-06-26 | 1997-06-26 | Electronic indicating instrument for reading and writing distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2308879Y true CN2308879Y (en) | 1999-02-24 |
Family
ID=33949670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97239755 Expired - Fee Related CN2308879Y (en) | 1997-06-26 | 1997-06-26 | Electronic indicating instrument for reading and writing distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2308879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493471A (en) * | 2019-08-28 | 2019-11-22 | 重庆医药高等专科学校 | One kind is corrected sitting posture pre- myopia prevention system and method based on intelligent mobile terminal |
-
1997
- 1997-06-26 CN CN 97239755 patent/CN2308879Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493471A (en) * | 2019-08-28 | 2019-11-22 | 重庆医药高等专科学校 | One kind is corrected sitting posture pre- myopia prevention system and method based on intelligent mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |