Fan blade and fan device

The utility model discloses a fan blade and a fan device, the fan blade comprises a rotating head and a blade body connected to the rotating head, the blade body comprises an inner contour and an outer contour, the inner contour and the outer contour are in smooth transition, and the vertical projection shapes of the inner contour and the outer contour are Archimedes spiral lines. According to the foldable fan, the rotating head and the blades are integrated, so that the fan blades are easy to fold, the vertical projection shapes of the inner contours and the outer contours of the fan blades are Archimedes spiral lines, the lengths of the fan blades of the foldable fan are increased, the inner contours and the outer contours are in smooth transition, the fan blows air smoothly, and noise generated by the fan is reduced. 本实用新型公开了一种扇叶及风扇装置，其中，所述扇叶包括转头和连接于所述转头的叶片，所述叶片包括内轮廓和外轮廓，所述内轮廓和外轮廓之间平滑过渡，所述内轮廓和外轮廓的垂直投影形状均为阿基米德螺旋线。本实用新型通过转头和叶片一体化使扇叶易收拢，扇叶的内轮廓和外轮廓的垂直投影形状均为阿基米德螺旋线，使可收拢风扇的扇叶的长度增加，且内轮廓和外轮廓之间平滑过渡，风扇吹风平顺，降低了风扇产生的噪