PROBLEM TO BE SOLVED: To provide an endoscope system comprising a simplified configuration capable of prompting an operator to cool at least a contact site with an interior of an object at an insertion part without reducing the illumination light quantity and also without impeding the observation and treatment within the interior of the object.SOLUTION: The endoscope system comprises: an insertion part an observation window 11 a fluid nozzle 51 a temperature detection part 62 and an image processing part 65 which generates image signals of an object image and which when the temperature of the insertion part equal to or higher than a predetermined value is detected by the temperature detection part 62, superposes on the image signals an index image mimicking at least one of the shape and color of a stain adhered to the observation window 11 in such a manner that at least a part of the object image is hidden, and displays the superposed image on a monitor 36.COPYRIGHT: (C)2016,JPO&INPIT【課題】簡単な構成にて、照明光量を低下させることなく、操作者に対し挿入部における少なくとも被検体内への接触部位の冷却を行うよう、被検体内の観察、処置を阻害することなく促すことができる構成を具備する内視鏡システムを提供する。【解決手段】挿入部と、観察窓11と、流体ノズル51と、温度検出部62と、被写体像の画像信号を生成するとともに、挿入部の温度が所定の値以上となったことが温度検出部62によって検出されると、画像信号に対して、被写体像の少なくとも一部が隠れるように、観察窓11に付着する汚れに形状または色の少なくとも一方を擬態した指標画像を重畳させてモニタ36に表示させる画像処理部65と、を具備する。【選択図】図3
