PROBLEM TO BE SOLVED: To provide an ear wearing tool with pulse sensor which enhances design freedom.SOLUTION: An ear wearing tool with pulse sensor 1 includes: a housing 3 a pulse sensor 5 and a light guide member 6. The housing includes an insertion part 11 capable of being inserted into an ear hole when the ear wearing tool is worn on a users ear, the insertion part including an exposure hole 12 facing an inner wall of the ear hole. The pulse sensor is attached to the housing, irradiates the inner wall of the ear hole with light with a light emitting element 21 and receives light returning from the inner wall of the ear hole with a light reception element, thereby capable of measuring the users pulse. The light guide member is long shaped and attached on the housing in a state in which one end 25 in a longitudinal direction is inserted into the exposure hole of the insertion part and the other end 26 in the longitudinal direction faces the pulse sensor so as to transmit light from the inner wall of the ear hole to the light reception element.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】設計自由度を高めることができる脈拍センサ付耳装着具を提供する。【解決手段】脈拍センサ付耳装着具1は、ハウジング3と、脈拍センサ5と、導光部材6とを備えている。前記ハウジングは、使用者の耳への装着時に耳孔に挿入可能な挿入部11を有し、前記耳孔の内壁に対向する露出孔12が前記挿入部に設けられている。前記脈拍センサは、前記ハウジングに取り付けられて、発光素子21により前記耳孔の内壁に向かって光を照射し且つ受光素子により前記耳孔の内壁から戻る光を受光することで使用者の脈拍を測定可能に構成されている。前記導光部材は、長尺状のものであり、前記発光素子から前記耳孔の内壁へ光を、又、前記耳孔の内壁から前記受光素子へ光を伝導可能なように、長手方向一端部25を前記挿入部の露出孔に挿入し且つ長手方向他端部26を前記脈拍センサに対向させた状態で前記ハウジングに取り付けられている。【選択図】図2