Patent ID: 8066397
Filing Date: 2011-11-29
Classification: B43K

Abstract:
1. A light pen, adapted to allow a switch structure thereof to be more durable and dependable and have a shorter stroke, comprising: a pen shell being tubular; a luminescence element movably combined with said pen shell and provided with first and second pins; a first magnet movably installed in said pen shell; a second magnet fixed in said pen shell and positioned above said first magnet; an insulation isolator respectively engaged to said first and said second pins to allow said first and said second pins not to contact with each other; wherein, said pen shell is used for accepting a battery; two adjacent sides of said first and said second magnets have different magnetism, said first and said second magnets are always separated, and approach each other once an external force is exerted thereon; said first pin and said second pin of the luminescence element ordinarily respectively do not turn on a circuit which is constituted by a first terminal and a second terminal of the battery to allow said luminescence element not to radiate; when said first and said second magnets are near, said first pin and said second pin of said luminescence element respectively turn on said circuit constituted by said first terminal and said second terminal of said battery to allow said luminescence element to radiate; wherein a light guiding element is further installed in said pen shell and used for guiding light; a front end of said light guiding element is extended out of a lower end of said pen shell, a rear end thereof is thicker, and is lodged in said pen shell; said luminescence element is movably installed in said pen shell, a bottom thereof is positioned above said light guiding element; wherein said first pin is longer than said second pin; said first magnet is annular and disposed around an outside portion of said first pin and above said second pin.