従来の太陽電池を電源としたソーラー照明灯は，20W蛍光灯他を光源に使用した市場価格100〜150万円前後の，高額なものが大多数であった。当本部では光源に白色高輝度LEDを特殊電球に組込んだ，市場価格50万円強の低価格製品2機種を開発，商品化した。約15年の使用が期待できる通電電流値に制御することにより，消費電力を10W以下とし太陽電池を小型化，蓄電池及びコントローラを本体内に収納した，スリムな一体型のソーラー照明灯である。

　Most of the conventional solar street lights using 20W fluorescent lamps as light sources were expensive. Their market prices were between 1,000,000 to 1,500,000 yen. We have developed two types of solar street lights with special high-luminance white LED lamps and realized low price of nearly 500,000 yen. To apply the controlled direct current at the LEDs, the life time was expected to become about 15 years. Due to the low energy consumption of less than 10W, a photovoltaic module size was able to be smaller and we realized the slim pole solar street light which the controller and the batteries were all set in.