PROBLEM TO BE SOLVED: To provide a desired endoscope comprising heat dissipation characteristics of an image sensor without newly installing a member having large volume and weight.SOLUTION: An endoscope comprises: an image sensor 54 disposed such that an imaging surface is substantially parallel with an insertion direction a heat dissipation substrate 57 having high thermal conductive layers 57A and 57B to a face direction and provided in the image sensor 54 such that the imaging surface is substantially parallel with the face direction and a connection member 72 allowing a second coating material 34C and a high thermal conductive layer 57B to transmit heat, wherein the second coating material coats a bundle of first coating materials 34B for coating signal lines 34A for transmitting signals to the image sensor 54.COPYRIGHT: (C)2014,JPO&INPIT【課題】体積や重量の大きい部材を新たに設けることなく、所望の撮像素子の放熱特性を備えた内視鏡を提供する。【解決手段】撮像面が挿入方向に略平行となるように配された撮像素子54と、面方向に高熱伝導層57A,57Bを備え、撮像面とその面方向が略平行になるように撮像素子54に設けられる放熱基板57と、撮像素子54との信号の伝達を担う信号線34Aを被覆する第一被覆材34Bの束をまとめて被覆する第二被覆材34Cと高熱伝導層57Bとを伝熱させる接続部材72と、を備えた。【選択図】図4