PROBLEM TO BE SOLVED: To provide a liquid medicine detector capable of making a lamp indicating medication light or blink precisely in response to liquid medicine flowing downward while forming a liquid column, even in a situation where a drip tube is easy to become dim.SOLUTION: In a liquid medicine detector, a luminous element 11a and a light receiving element 11b sandwich a falling locus of liquid medicine 120, and a notification part such as an in-medication lamp 21a notifies a user of the medication of the liquid medicine 120 on the basis of a signal inputting from the light receiving element 11b. Further, the liquid medicine detector includes a signal input part which inputs the signal to the notification part when an intermittent signal output from a sensor 11 consisting of the luminous element 11a and the light receiving element 11b becomes shorter than a certain interval, during the subsequent period when the signal is not output from the sensor 11.COPYRIGHT: (C)2016,JPO&INPIT【課題】点滴筒が曇り易い状況であっても、液柱を形成して流下する薬液に対して投薬を示すランプを精度よく点灯又は点滅させることのできる薬液検出装置を提供する。【解決手段】発光素子11a及び受光素子11bで薬液120の落下軌跡を挟み、受光素子11bからの信号の入力に基づいて薬液120の投薬を投薬中ランプ21a等の報知部で報知する。更に、この発光素子11aと受光素子11bよりなるセンサ11から出力される断続信号が一定間隔よりも短くなると、その後のセンサ11から信号が未出力の間、報知部に信号を入力する信号入力部を備える。【選択図】図2
