In order inside point 11 to cover the heat source 42,43,45,46 of the electronic image pickup unit 30 which distribution facilities is done endothermic section 55 distribution facilities it does endoscope device 1, endothermic doing the heat which occurs at the heat source 42,43,45,46, heat transfer doing with heat transfer section 52, it controls the electric noise of the image pickup picture is done in addition to the cloudiness prevention of external surface of the optical component which in the insertion section point with heat dissipation section 51 in point 11 the heat which heat transfer is done to heat the observation window 22 which distribution facilities is done, distribution facilities.内視鏡装置1は、先端部11内に配設された電子撮像ユニット30の熱源42,43,45,46を覆うように吸熱部55を配設し、熱源42,43,45,46で発生する熱を吸熱して、伝熱部52によって伝熱して、伝熱された熱を放熱部51により先端部11に配設された観察窓22を加熱するようにして、挿入部先端に配設される光学部材の外表面の曇り防止に加え、撮像画像の電気的ノイズを抑制する。
