CN201549056U - Nearsightedness preventer - Google Patents
Nearsightedness preventer Download PDFInfo
- Publication number
- CN201549056U CN201549056U CN2009202671698U CN200920267169U CN201549056U CN 201549056 U CN201549056 U CN 201549056U CN 2009202671698 U CN2009202671698 U CN 2009202671698U CN 200920267169 U CN200920267169 U CN 200920267169U CN 201549056 U CN201549056 U CN 201549056U
- Authority
- CN
- China
- Prior art keywords
- photometry
- links
- light
- switch
- potentiometer
- 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
Links
Images
Abstract
The utility model discloses a nearsightedness preventer, which belongs to the technical field of electronic stationery. The nearsightedness preventer comprises an 'n'-shaped head band, a light and range measuring device is arranged on the head band and comprises a casing fixed on the head band, and a mercury switch, a vibrator, a light and range measuring converting switch, a power switch, a tripolar amplifying tube, a light measuring photocell, a positioner, a divider resistor and a battery are arranged inside the casing. The nearsightedness preventer has the advantages of having simple, light and convenient structure and integrating light measuring and range measuring functions, not only can test environmental light brightness fast and provide fine sight environments for users, but also can remind the users of keeping right distances during reading and writing processes, and is favorable for protecting eyes of the users.
Description
Technical field
The utility model discloses a kind of myopia preventer, belong to electronic stationery articles for use technical field.
Background technology
Student or the vast person of seeking knowledge of society have often ignored the protection eyes, with at the moment not noting sight line brightness, line-of-sight distance and read-write posture when urgently seeking knowledge.Also got high myopia when acquisition is well educated, this has brought a lot of puzzlements for from now on life, work.So vision protection is an important problems.At present, in the culture and education articles for use, known photometer or myopia preventer cost an arm and a leg, and carry because of its complex structure, the big inconvenience of volume, are difficult to popularization and application.
The utility model content
The utility model is at the deficiencies in the prior art, and it is a kind of simple for structure, light that purpose is to provide, and collects two functions of photometry and range finding, the myopia preventer of the effective vision protection of help user.
For realizing above purpose, the technical solution adopted in the utility model is: a kind of myopia preventer, it is characterized in that: comprise " n " type head hoop, one photometry distance measuring equipment is installed on the head hoop, this device comprises the housing that is fixed on the head hoop, is equipped with mercury cut-off, ticker, photometry range finding switch, power switch, three utmost point amplifier tubes, photometry photoelectric cell, potentiometer, divider resistance and battery in the housing;
Wherein, the positive pole of battery links to each other with power switch, its negative pole links to each other with ticker, base bleederresistance R1, the other end of ticker links to each other with the collector C of three utmost point amplifier tubes, R1 is composed in series base bleederresistance with R2 and connects with mercury cut-off, and base voltage connects the range finding end of photometry range finding switch through mercury cut-off;
The other end of power switch is with the emitter e series connection of divider resistance R2, three utmost point amplifier tubes, connect again potentiometer one end and the photronic positive terminal of photometry, the photronic negative pole end of photometry links to each other with potentiometer lever arm arrow, the other end of potentiometer links to each other with the photometry end of photometry range finding switch, all links to each other by lead with all parts in the upper shell.
The utility model further is set to,
Described housing is connected with head hoop by fixed screw.
One adjuster bar is installed on the described mercury cut-off and is extended to outside the housing.
The utlity model has simple for structure, light; integrate the photometry and pair advantage of a function of finding range; can do test efficiently to environmental light brightness; for the user provides good line-of-sight circumstances; can supervise again and remind the user in the read-write process, to keep correct distance, help protecting the user healthy with eye.
Below in conjunction with drawings and Examples the utility model is further described in detail.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model;
Fig. 2 is the one-piece construction synoptic diagram of the utility model photometry distance measuring equipment;
Fig. 3 is the circuit control principle figure of the utility model photometry distance measuring equipment.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, a kind of myopia preventer comprises " n " type head hoop 1, and a photometry distance measuring equipment is installed on the head hoop 1, and this device comprises the housing 2 on fixing and the head hoop 1, and housing 2 is connected with head hoop 1 by fixed screw 11.
Be equipped with mercury cut-off 3, ticker 4, photometry range finding switch 5, power switch 6, three utmost point amplifier tubes 7, photometry photoelectric cell 8, potentiometer 9, divider resistance 10 and battery 12 in the housing 2; One adjuster bar 31 is installed on the mercury cut-off 3 and is extended to outside the housing 2, photometry photoelectric cell 8 is installed with housing 2 one sides and is exposed and surface of shell, and power switch 6 is installed on the another side of housing.It is the corresponding surface of photometry photoelectric cell 8.
Wherein, the positive pole of battery 12 links to each other with power switch 6, its negative pole links to each other with ticker 4, base bleederresistance R1, the other end of ticker 4 links to each other with the collector C of three utmost point amplifier tubes 7, R1 is composed in series base bleederresistance 10 with R2 and connects with mercury cut-off 3, base voltage is through the range finding end of mercury cut-off 3 connection photometry range finding switches 5, and this section is connected to range-measuring circuit, all links to each other by lead 13 between each parts; The other end of power switch 6 is with the emitter e series connection of divider resistance R2, three utmost point amplifier tubes 7, connect the again positive terminal of potentiometer 9 one ends and photometry photoelectric cell 8, the negative pole end of photometry photoelectric cell 8 links to each other with potentiometer 9 lever arm arrows, the other end of potentiometer 9 links to each other with the photometry end of photometry range finding switch 5, this section is connected to light measuring circuit, and all links to each other by lead 13 between each parts.
Principle of work of the present utility model is: power-on switch 6, photometry is found range 5 groups of switches to the photometry end, at this moment the luminance brightness that receives of photometry photoelectric cell 8 is if reached 350 Luxs or greater than the useful luminance of 350 Luxs, the voltage of photometry photoelectric cell 8 is through potentiometer 9 and photometry range finding switch 5 to three utmost point amplifier tubes 7 base stages, make collector c and emitter e conducting, ticker 4 begins vibrations work, illustrates that this environmental light brightness has reached useful luminance.If the user thinks that brightness is not enough, can ticker 4 be quit work trimmer potentiometer 9 so, according to photometry photoelectric cell 8 ticker 4 work get final product with suitable brightness again, has surveyed the operating environment luminance brightness after, find range 5 groups of switches of photometry are held to finding range, regulate the parallactic angle of mercury cut-off adjuster bar 31, make user's binocular apart from 1 chi of books, mercury cut-off conducting when being equal to or less than 1 chi, at this moment the operating voltage of divider resistance 10 adds three utmost point amplifier tube base stages by mercury cut-off 3.Make collector and emitter conducting, ticker 4 is made vibration reminding, and the user is horse back vigilance then, just can raise the head, and the correct distance of maintenance and books, at this moment mercury cut-off 3 will cut off the base stage operating voltage, and ticker 4 is static.The utility model plays supervisory role to user's reading/writing distance, thereby reaches the purpose of vision protection, because three utmost point amplifier tube working times are short, and therefore also very power saving.
Claims (3)
1. myopia preventer, it is characterized in that: comprise " n " type head hoop (1), head hoop (1) is gone up a photometry distance measuring equipment is installed, this device comprises the housing (2) that is fixed on the head hoop (1), is equipped with mercury cut-off (3), ticker (4), photometry range finding switch (5), power switch (6), three utmost point amplifier tubes (7), photometry photoelectric cell (8), potentiometer (9), divider resistance (10) and battery (12) in the housing (2);
Wherein, the positive pole of battery (12) links to each other with power switch (6), its negative pole links to each other with ticker (4), base bleederresistance R1, the other end of ticker (4) links to each other with the collector C of three utmost point amplifier tubes (7), R1 is composed in series base bleederresistance (10) with R2 and connects with mercury cut-off (3), and base voltage connects the range finding end of photometry range finding switch (5) through mercury cut-off (3);
The other end of power switch (6) is with the emitter e series connection of divider resistance R2, three utmost point amplifier tubes (7), connect the again positive terminal of potentiometer (9) one ends and photometry photoelectric cell (8), the negative pole end of photometry photoelectric cell (8) links to each other with potentiometer (9) lever arm arrow, the other end of potentiometer (9) links to each other with the photometry end of photometry range finding switch (5), all links to each other by lead (13) with all parts in the upper shell (2).
2. a kind of myopia preventer according to claim 1 is characterized in that: described housing (2) is connected with head hoop (1) by fixed screw (11).
3. a kind of myopia preventer according to claim 1 is characterized in that: described mercury cut-off (3) is gone up installation one adjuster bar (31) and is extended to outside the housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202671698U CN201549056U (en) | 2009-11-17 | 2009-11-17 | Nearsightedness preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202671698U CN201549056U (en) | 2009-11-17 | 2009-11-17 | Nearsightedness preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201549056U true CN201549056U (en) | 2010-08-11 |
Family
ID=42604234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202671698U Expired - Fee Related CN201549056U (en) | 2009-11-17 | 2009-11-17 | Nearsightedness preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201549056U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559778A (en) * | 2013-11-15 | 2014-02-05 | 王宁利 | Visual load monitoring and alarming equipment and method |
| CN105866787A (en) * | 2016-05-27 | 2016-08-17 | 淮南联合大学 | Novel head-mounted distance measuring device |
-
2009
- 2009-11-17 CN CN2009202671698U patent/CN201549056U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559778A (en) * | 2013-11-15 | 2014-02-05 | 王宁利 | Visual load monitoring and alarming equipment and method |
| CN103559778B (en) * | 2013-11-15 | 2016-09-14 | 王宁利 | Depending on load monitoring and warning device and method |
| CN105866787A (en) * | 2016-05-27 | 2016-08-17 | 淮南联合大学 | Novel head-mounted distance measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201417180Y (en) | Temperature and humidity detection alarm | |
| CN201549056U (en) | Nearsightedness preventer | |
| CN106054622A (en) | Smart home ring control system based on Internet | |
| CN104570357A (en) | Radiograph observation instrument capable of being automatically switched on/off | |
| CN208579793U (en) | Internet of Things Intelligent environment monitoring system | |
| CN101697410B (en) | Short-circuit protection circuit adopted in battery charger circuit | |
| CN205015391U (en) | Medical stand -by power supply voltage detecting early warning circuit | |
| CN203911452U (en) | Sensitivity-adjustable communication base station with overvoltage protection | |
| CN205014098U (en) | Outdoor solar energy travel flashlight with intelligence electronic clock | |
| CN207162364U (en) | A kind of multifunctional intellectual old man desk lamp | |
| CN203038362U (en) | Stockout notification device capable of being conveniently installed on ordinary vending machine | |
| CN203424425U (en) | Intelligent integrator used for umbrella | |
| CN205960725U (en) | Take overcharge protection's charging indication circuit | |
| CN202472880U (en) | Microcomputer voice prompter for eyesight protection | |
| CN205642617U (en) | Portable luminance detector circuit | |
| CN104374472A (en) | Ambient light illumination detecting device | |
| CN204967348U (en) | Novel two couple portable power source of putting that fill | |
| CN220603891U (en) | Bracelet controller of multiparameter collection | |
| CN220732402U (en) | Power supply device for bracelet controller | |
| CN204887202U (en) | Intelligence surveillance camera machine | |
| CN204859655U (en) | LED breathes lamp circuit | |
| CN218497627U (en) | Alarm capable of automatically sensing ambient light intensity | |
| CN203981206U (en) | A kind of indoor temperature and humidity alarm switch device based on 51 single-chip microcomputers | |
| CN212646645U (en) | Gas concentration detection intelligent terminal | |
| CN204425750U (en) | A kind of Intelligent LED lamp control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20111117 |