To provide an endoscope, etc. that can efficiently release heat generated by an imaging element, etc. without comprising a complicated structure.SOLUTION: An endoscope comprises a flexible pipe that has flexibility, a tip part that includes an imaging part, and a bendable curved part that connects the flexible pipe and the tip part. The tip part comprises a cylinder body that houses the imaging part, a case that internally fits and holds the cylinder body, a heat conduction sheet interposed between the cylinder body and the case to transfer generated heat in the cylinder body to the case, and a locking part that locks a through hole provided in the heat conduction sheet to fix the heat conduction sheet to the cylinder body.SELECTED DRAWING: Figure 2【課題】複雑な構成を備えることなく、撮像素子等が発する熱を効率良く放出できる内視鏡等を提供する。【解決手段】内視鏡は、可撓性を有する可撓管と、撮像部を有する先端部と、可撓管及び先端部を連結する屈曲可能な湾曲部とを備える。先端部は、撮像部を収納する筒体と、筒体を内嵌保持する筐体と、筒体及び筐体の間に介在され、筒体内の発生熱を筐体に伝える熱伝導シートと、熱伝導シートに設けられた貫通孔を係止して熱伝導シートを筒体に固定する係止部とを有する。【選択図】図2