The present invention provides an endoscope device. Even at a state that an LED driven by large current, the LED can be sufficiently cooled, and bright irradiation can be performed for an endoscopy object. The endoscope device comprises the following components: a metal mounting substrate (4) which is configured at a front end of an insertion part (2) and is provided with a projection (12) that projects to the front side a flexible substrate (7) which is configured to a position except for the projection (12) on the mounting substrate (4) and is provided with an electrode pad (7b) at the surface side, while the back side is jointed with the mounting substrate (4) through thermal conductive jointing material (17) and an LED package (6) which is provided with electrodes (6c) that are welded on the electrode pads (7b) of the flexible substrate (7). Furthermore, the back part (6d) except for the electrodes (6c) on the LED package is jointed with a front surface of the projection (12) of the mounting substrate (4).
