| 摘要 |
<p>PURPOSE:To erase data on together with a drawing by projecting a contactor from an end surface of a board surface erasing material arranged in a case with a spring arranged in the case as to a blackboard eraser for an electronic blackboard used for a remote conference system. CONSTITUTION:A storage recessed part 20a is formed at one position of the case 20 made of an insulator, the spring 21 and contactor 22 which is sectioned in a T shape are arranged therein, and the board surface erasing material 23 made of sponge which presses the contactor 22 against the spring 21 is built in the case 20. Then the contactor 22 has its tip projected from the end surface of the erasing material 23 while piercing the center of the board erasing material 23. When this blackboard eraser is slid on the surface of the electronic blackboard, the tip of the contactor 2 is on the same plane with the erasing material 23, but the spring 21 applied force so that a switch element arranged on the blackboard surface is turned on all the time. The drawing is erased in erasure mode with the erasing material 23, and data corresponding to it is erased by detecting the position by turning on the switch element with the contactor 22.</p> |
