| 摘要 |
PURPOSE: A play tool is provided to reduce power consumption and to be used as a material for energy education. CONSTITUTION: A play tool comprises: a mounting tool(110) having a settling unit capable of enabling a user to sit; a main spring(120) which elastically supports the mounting tool so that the mounting tool can be ascended and descended; and a converting unit which is arranged between the mounting tool and main spring, changes mechanical energy generated by the elevating action of for mounting tool into electrical energy, and supplies the transformed electrical energy to light source. |
