CN1074823A - Myopia preventer - Google Patents
Myopia preventer Download PDFInfo
- Publication number
- CN1074823A CN1074823A CN 92108020 CN92108020A CN1074823A CN 1074823 A CN1074823 A CN 1074823A CN 92108020 CN92108020 CN 92108020 CN 92108020 A CN92108020 A CN 92108020A CN 1074823 A CN1074823 A CN 1074823A
- Authority
- CN
- China
- Prior art keywords
- child
- liquid
- myopia
- myopia prevention
- preventer
- 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.)
- Pending
Links
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The present invention is a kind of instrument of pre-myopia prevention.Be fixed in child's forehead during use.When child's head leans forward or all will give a warning when crooked to left and right.Cardinal principle is, utilizes liquid to trigger relevant electronic circuit with the relative motion of container and the electric conductivity of liquid, reminds the child to keep correct read-write posture to reach, thus the purpose of pre-myopia prevention.
Description
The present invention is a kind of instrument of pre-myopia prevention, keeps correct status when being suitable for children's handwriting practicing reading, thereby reaches the purpose of pre-myopia prevention.
Existing myopia prevention desk lamp is the function that gives the alarm when child's head excessively leans forward of tool only, then can't be warned when its head is crooked towards the next door.
The present invention utilizes the surface of conducting liquid to remain the characteristics of level, and the electric conductivity that reaches himself triggers relevant circuit, and then sends corresponding caution signals.
The use system of this myopia preventer is affixed on child's forehead with it and fixes, as shown in drawings, when child's head excessively leans forward, front end liquid level perpendicular to the conducting liquid (3) in the closed container (2) of forehead will rise, the heart line of lead (10), (11) is exposed to the inwall of closed container (2), when they simultaneously when flooding, have just been connected the positive pole of battery (5) by conductive liquid (3), the electric current lead (10) of flowing through at this moment.(11) and buzzer (4) get back to the negative pole of battery (5), buzzer warning.In like manner, when child's head to the left or to the right partially the time, the conducting liquid (3) that is parallel in the closed container (1) of forehead will be connected lead (6), (7) or (8), (9), the same warning of buzzer (4).
Conducting liquid (3) can be silver nitrate solution or hydrargyrum etc.
Claims (2)
1, a kind of myopia preventer is characterized in that:
Be fixed in usefulness person's head front during-use.
2, according to the myopia preventer of claim 1, it is characterized in that:
-utilize the liquid and the relative motion of container to change the break-make of relevant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108020 CN1074823A (en) | 1992-01-28 | 1992-01-28 | Myopia preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108020 CN1074823A (en) | 1992-01-28 | 1992-01-28 | Myopia preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1074823A true CN1074823A (en) | 1993-08-04 |
Family
ID=4943148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92108020 Pending CN1074823A (en) | 1992-01-28 | 1992-01-28 | Myopia preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074823A (en) |
-
1992
- 1992-01-28 CN CN 92108020 patent/CN1074823A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |