CN2789851Y - Microcomputer vision protection instrument for students - Google Patents
Microcomputer vision protection instrument for students Download PDFInfo
- Publication number
- CN2789851Y CN2789851Y CN 200520019430 CN200520019430U CN2789851Y CN 2789851 Y CN2789851 Y CN 2789851Y CN 200520019430 CN200520019430 CN 200520019430 CN 200520019430 U CN200520019430 U CN 200520019430U CN 2789851 Y CN2789851 Y CN 2789851Y
- Authority
- CN
- China
- Prior art keywords
- circuit board
- control circuit
- power supply
- switch
- alarm
- 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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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A micro-computer vision-protective instrument for students comprises a dolphin-shaped casing. An alarm, a control circuit board, a power switch, a mercury switch and a power supply are arranged in the dolphin-shaped casing. The alarm is connected to the control circuit board and is controlled by the control circuit board. The power switch is connected to the power supply and the control circuit board via conducting wires, and the mercury switch is connected between the power switch and the power supply in series. The mercury switch is turned on or off according to the change of the angle formed between the power switch and the power supply. The micro-computer vision-protective instrument for students, which is provided by the utility model, is hung on the ears when in use; as long as read-write posture is incorrect and the distance between the head and the tabletop is less than 35 to 45 centimeters, the mercury switch is automatically switched into conduction, the alarm is turned on with alarming sound, and then the user has to correct the read-write posture; only when the read-write posture is correct, the mercury switch is turned off, and the alarming sound stops automatically. Thereby, the utility model prevents people against myopia, crookback and bending vertebral columns.
Description
Technical field
The utility model mainly is cultural goods, especially a kind of micro computer student eyesight protection instrument.
Background technology
Reading and writing needs correct read-write posture, especially teenager.The incorrect eye strain that easily causes of read-write posture causes hypopsia, and severe patient can form myopia, hunchback, spinal curvature.
Summary of the invention
The micro computer student eyesight protection instrument that the purpose of this utility model just provides a kind of novel structure, is skillfully constructed.
Micro computer student eyesight protection instrument of the present utility model comprises dolphin shape shell; be provided with alarm, control circuit board, power switch, mercury cut-off, power supply in the dolphin shape shell; alarm links to each other with control circuit board; control by control circuit board; power switch links to each other with power supply and control circuit board by lead; be connected in series mercury cut-off between power switch and the power supply, mercury cut-off is opened closed according to the variation of its angle.
Micro computer student eyesight protection instrument of the present utility model; during use it is hung on the ear, during people's reading and writing, in case read-write posture is incorrect; when head is lower than the 35-45 centimetre from the desktop distance; the automatic conducting of mercury cut-off meeting, alarm start also sends chimes of doom, and the user must correct read-write posture this moment; have only the read-write posture of working as correct; mercury cut-off closure, chimes of doom just can stop automatically, thereby guarantee that people are not near-sighted, the back of the body is not hunchbacked, backbone is not crooked.
Description of drawings
Accompanying drawing is the utility model structural representation.
Embodiment
A kind of micro computer student eyesight protection instrument comprises dolphin shape shell 1; be provided with alarm 2, control circuit board 7, power switch 3, power supply 5 in the dolphin shape shell 1; alarm 2 links to each other with control circuit board 7; by control circuit board 7 controls; power switch 3 links to each other with power supply 5 and control circuit board 7 by lead 6; be connected in series mercury cut-off 4 between power switch 3 and the power supply 5, mercury cut-off 4 is opened closed according to the variation of its angle.
Claims (1)
1, a kind of micro computer student eyesight protection instrument comprises dolphin shape shell (1); it is characterized in that: be provided with alarm (2), control circuit board (7), power switch (3), power supply (5) in the dolphin shape shell (1); alarm (2) links to each other with control circuit board (7); power switch (3) links to each other with power supply (5) and control circuit board (7) by lead (6), is connected in series mercury cut-off (4) between power switch (3) and the power supply (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520019430 CN2789851Y (en) | 2005-05-11 | 2005-05-11 | Microcomputer vision protection instrument for students |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520019430 CN2789851Y (en) | 2005-05-11 | 2005-05-11 | Microcomputer vision protection instrument for students |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2789851Y true CN2789851Y (en) | 2006-06-21 |
Family
ID=36790186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520019430 Expired - Fee Related CN2789851Y (en) | 2005-05-11 | 2005-05-11 | Microcomputer vision protection instrument for students |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2789851Y (en) |
-
2005
- 2005-05-11 CN CN 200520019430 patent/CN2789851Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Nie Hui Document name: Notification of Termination of Patent Right |
|
| 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 |