When generating electricity by rotation of a roller to cause a light emitting part to emit light, the rotation of the roller became heavy due to the load thereof, causing the massaging feel to be dull. A rod-shaped roller (30) with a polygonal cross section is rotatably joined to a handle (10) around an axis of rotation (ax) which runs along the longitudinal direction of the roller, and light emitting parts (32B-1 to 3, 32D-1 to 3, 32F-1 to 3) provided on side faces (31B, 31D, 31F) of the roller (30) are made to emit light by a built-in battery contained in the roller (30) or the handle (10). Iontophoresis is also possible by attaching iontophoresis electrodes to the sides of the roller and energizing them.本發明的問題在於若要使發光部發光而利用滾子的旋轉進行發電,則由於該負載會使滾子的旋轉變沉重,而只能得到笨拙的按摩感覺。為了解決此問題,將剖面為多角形且本身為棒狀體的滾子30,以沿著其長度方向的旋轉軸ax為中心,相對於手柄10,連結成旋轉自如,並藉由配備在滾子30或手柄10中的內裝電池,使設在此滾子30的側面31B、31D、31F上的發光部32B-1~3、32D-1~3、32F-1~3發光。將離子導入電極安裝在滾子的側面上,若對該離子導入電極通電則可導入離子。10‧‧‧手柄30‧‧‧滾子31‧‧‧方筒31a‧‧‧光窗32‧‧‧發光部33‧‧‧LED34‧‧‧構裝基板34a‧‧‧中央基板34b‧‧‧分支基板35‧‧‧支軸36‧‧‧按鈕電池ax‧‧‧旋轉中心
