PROBLEM TO BE SOLVED: To provide a heat radiation structure of an endoscope distal end efficiently radiating heat and having a small endoscope distal end.SOLUTION: The heat radiation structure of the endoscope distal end includes: an imaging device 22 provided at an imaging device section 18 of the endoscope a shield member 40 and a circuit board 24 provided on a backside of the imaging device 22. The shield member 40 covers peripheries of transmission cables 28. A cavity 34 is provided on a surface in an opposite side of the imaging device 22 of the circuit board 24. The transmission cable 28 fetches an image signal from the imaging device 22. The cavity 34 includes a thermoelement 36 for radiating heat generated from the imaging device 22. A connection plate in the heat radiation side of the thermoelement 36 is joined with the shield member 40.COPYRIGHT: (C)2014,JPO&INPIT【課題】効率的に放熱し、かつ、内視鏡先端部が小さい内視鏡先端部の放熱構造を提供する。【解決手段】内視鏡先端部の放熱構造は、内視鏡の撮像素子部18に設けられた撮像素子22と、シールド部材40と、撮像素子22の裏面に設けられた回路基板24とを備える。シールド部材40は伝送ケーブル28の周囲を覆う。キャビティ34は、回路基板24の撮像素子22とは反対側の面に設けられる。伝送ケーブル28は、撮像素子22からの画像信号を取出す。キャビティ34には、撮像素子22から発せられた熱を放射する熱電素子36を有する。熱電素子36の放熱側の接続板は、シールド部材40と接合する。【選択図】図2
