Title: Shortsightedness preventing appliance for pupil
Application Number: 98106782 Application Date: 1998.02.15
Publication Number: 1194137 Publication Date: 1998.09.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A61H5/00,G08B21/00
Applicant(s) Name: Cui Long Address: 161005
Inventor(s) Name:
Attorney & Agent:
Abstract:
     The shortsightedness preventing appliance has a structure designed based on the obliquity of pen. During writing, when the distance between eye and desk reduces, the obliquity of pen to horizontal plane of desk will increase gradually, and when the obliquity reaches certain amount, the oblique switch inside the pen is connected to contact and the line and the IC is turned on so that the LED or sounder sends out light or sound alarm signal. The said appliance ensures pupil's correct writing posture and prevents bent vertebra and shortsightedness. It may be combined with various kinds of pens.
Time: 10
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