To provide a control device for controlling pests at places where pests are easy to live, such as mechanical drive units in a food and drink factory, a pharmaceutical factory or the like, a narrow place in the interior of a switchboard or the like, which are difficult to clean, easily accumulate powder, dust, , Which can insect kill insects occurring and can effectively prevent its occurrence, and provides an insecticidal device using blue light.SOLUTION: A plurality of blue LED units 1 having a large number of LEDs 3 for blue irradiation which emit blue light in a wavelength range of 400 to 500 nm are arranged in the elongated housing 2 through a plurality of cords 4 of an appropriate length And are connected in series.BACKGROUND OF THE INVENTION【課題】飲食品工場や医薬品工場等における機械駆動部や配電盤等の内奥の狭い箇所等の、清掃がしにくくて粉体や塵埃等がたまりやすく、害虫が生息しやすい箇所における害虫の防除のために使用するのに好適で、発生している昆虫類を殺虫すると共にその発生を有効に防止し得る、青色光を用いた殺虫機器を提供する。【解決手段】長尺筐体2内に、400~500nmの波長範囲の青色光を放射する青色照射用LED3を多数一列に配備した青色LEDユニット1が複数、適宜長さのコード4を介して直列接続されて成る。【選択図】図1
