電光でんこう Common Noun English jmdict 1 noun (common) (futsuumeishi) lightning 2 noun (common) (futsuumeishi) electric illumination;light from an electric source
電光掲示板でんこうけいじばん Noun English jmdict 1 noun (common) (futsuumeishi) electric noticeboard;electric scoreboard;electric bulletin board