When using the utility model the wind-bell can make agreeable sounds under the action of the wind force as the javelin moves which can suggest staff members on the playground to have attention .

本实用新型在使用时，随着标枪的运动，在风力的作用下， 风铃 会 发出 悦耳的响声，以提示运动场上的工作人员注意。