PROBLEM TO BE SOLVED: To solve such a problem that insufficient cooling occurs if a roaring noise is generated or an abnormality occurs in temperature detection of a thermistor when a plurality of cooling fans are controlled by using a temperature sensor.SOLUTION: An endoscope light-source device, configured to have one or more temperature measurement positions in its inside, includes: one or more cooling means 108, 109 corresponding to the one or more temperature measurement positions a plurality of temperature measuring means 116, 105 first cooling-control-value calculating means 202, 203 for calculating control values of the cooling means on the basis of each measured temperature second cooling-control-value calculating means 202, 203 for calculating second cooling control values on the basis of the cooling efficiency, determined by the fan arrangement and the air flow, by multiplying the calculated first cooling control values by the cooling efficiency a cooling-control-value selecting means 204 that compares each second cooling control value based on each measured temperature so as to select the second cooling control value having the highest coolability and cooling control means 205, 206 for controlling all the cooling means on the basis of the selected second cooling control value.COPYRIGHT: (C)2012,JPO&INPIT【課題】温度センサを用いて複数の冷却ファンを制御する際に、うねり音が発生したり、またサーミスタの温度検出に異常を生じたとき、冷却不足を生じる。【解決手段】内視鏡光源装置内の1つ以上の温度測定位置があり、これに対応した1つ以上の冷却手段108,109と、複数の温度測定手段116,105と、測定された各々の温度に基づき冷却手段の制御値を算出する第1の冷却制御値算出手段202,203と、算出された第1の冷却制御値に対してファンの配置及び空気の流れ方で決まる冷却効率に基づき第2の冷却制御値を算出する第2の冷却制御値算出手段202,203と、温度測定された各々の温度に基づく各々の第2の冷却制御値を比較し、最も冷却能力が高い第2の冷却制御値を選択する冷却制御値選択手段204と、選択された第2の冷却制御値に基づき全冷却手段を制御する冷却制御手段205,206と、を備える。【選択図】図1
