PROBLEM TO BE SOLVED: To provide a light source device that reduces an increase in temperature inside a light source unit by a light component of an unnecessary wavelength that is not used for observation light.SOLUTION: A light source device includes: a first LED 51 for emitting irradiation light OP1 for normal light observation a second LED 52 for emitting irradiation light OP2 for special light observation a radiation fin 57 for radiating the heat generated in the first LED 51 and the second LED 52 a heat pipe 56 for transmitting the heat to the radiation fin 57 and an optical filter 78 that can be disposed on an optical path of the irradiation light OP1 for normal light observation for transmitting the incident irradiation light OP1 for normal light observation and reflecting the incident irradiation light OP2 for special light observation. The heat pipe 56 is disposed at a position where unnecessary light OPx of the irradiation light OP1 for normal light observation that does not pass through the optical filter 78, but is reflected is incident.COPYRIGHT: (C)2014,JPO&INPIT【課題】光源ユニット内部における、観察用光に用いない不必要な波長の光成分による温度上昇を低減する光源装置を提供する。【解決手段】通常光観察用照射光OP1を出射する第1のLED51と、特殊光観察用照射光OP2を出射する第2のLED52と、第1のLED51および第2のLED52において発生する熱を放熱させるための放熱フィン57と、当該熱を放熱フィン57に伝達するヒートパイプ56と、通常光観察用照射光OP1の光路上に配置可能であって、入射する通常光観察用照射光OP1を透過させ、入射する特殊光観察用照射光OP2を反射させるための光学フィルタ78と、を備え、前記ヒートパイプ56は、光学フィルタ78を透過せず反射する通常光観察用照射光OP1の不要光OPxを入射する位置に配置される。【選択図】図2
