| 摘要 |
PROBLEM TO BE SOLVED: To enjoy a change with unexpectedness by incorporating light emitting elements flashing according to a relation to a knocking operation in upper and lower positions. SOLUTION: The knock type ballpoint pen comprises a casing body 11 having light transmission properties, a ballpoint holder 21 telescopically housing a point 22a in the body 11, and a light transmission knocking cylinder 31 having two light emitting elements 52, 56 lighting in the case of closing a built-in battery circuit at the time of writing to receive a writing pressure at the time of mostly advancing the holder 21 and telescopically held in the body 11 to telescopically operate the holder 21. Thus, the two elements 52, 56 can flash in response to movement of the holder 21. |
