PROBLEM TO BE SOLVED: To provide an electronic endoscope which effectively dissipates heat generated in a tip portion and secures electromagnetic compatibility (EMC) by preventing emission of electromagnetic wave generated from an imaging device.SOLUTION: An electronic endoscope 1 includes: an insertion portion 2 with a tip portion 11 an imaging unit 30 provided to the tip portion 11 and having solid-state imaging devices 42, 45 and electronic parts 43, 46 a metal shield frame 48 provided to the imaging unit 30 and covering the solid-state imaging devices 42, 45 and the electronic parts 43, 46 and heat dissipation members 61, 62, 63 provided in the insertion portion 2, connected to the metal shield frame 48, transferring and dissipating heat of the imaging unit 30 to the proximate end side of the insertion portion 2, and set to a length L which does not coincide with a node and antinode of a wavelength of a drive frequency of the solid-state imaging device 42, 45.COPYRIGHT: (C)2014,JPO&INPIT【課題】 先端部で発生する熱を良好に放熱すると共に、撮像装置から発生する電磁波の放射を抑制して電磁両立性(EMC)を確保した電子内視鏡の提供。【解決手段】 電子内視鏡1は、先端部11を備えた挿入部2と、先端部11に設けられ、固体撮像素子42,45および電子部品43,46を有する撮像ユニット30と、撮像ユニット30に設けられ、固体撮像素子42,45および電子部品43,46を覆う金属シールド枠48と、挿入部2内に設けられ、金属シールド枠48と接続されて撮像ユニット30の熱を挿入部2の基端側へ伝熱して放熱し、固体撮像素子42,45の駆動周波数の波長の節または腹と一致しない長さLに設定された放熱部材61,62,63と、を具備する。【選択図】図9
