The endoscope is provided with: a hard metal leading end part that is provided on the leading end of a bending part and in which the observation optical component is fixed a leading end cover that is fixed integrally to the hard leading end part and configured using an insulating resin part, and which has a transparent illumination window and a light-emitting device-setting hole, which configure the illumination optical component a light-emitting device that is provided with a light-emitting part that is disposed in the light-emitting device-setting hole, faces the illumination window of the leading end cover and is fixed at a previously determined position, and with a conducting part that is positioned on the illumination window side of the opening of said light-emitting device-setting hole and faces the opening of said light-emitting device-setting hole a substrate cum heat-radiating part that has thermal conductivity, is connected to the conducting part of the light-emitting device and to which a power supply cable that supplies electric power is connected and a plate-shaped heat-radiating part that has thermal conductivity, one end of which is connected to the substrate and the other end of which protrudes from the substrate and radiates the heat conducted from the substrate.Linvention porte sur un endoscope comportant: une partie dextrémité avant en métal dur qui est disposée sur lextrémité avant dune partie de courbure et dans laquelle le composant optique dobservation est fixé un couvercle dextrémité avant qui est fixé dun seul tenant à la partie dextrémité avant dure et configuré à laide dune partie en résine isolante, et qui a une fenêtre déclairage transparente et un trou de réglage de dispositif démission de lumière, qui configurent le composant optique de léclairage un dispositif démission de lumière qui comporte une partie démission de lumière qui est disposée dans le trou de réglage de dispositif démission de lumière, qui est tournée vers la fenêtre dé
