Our minds automatically think wax candle when we think of a candle because that's the most common meaning of candle, but candle comes from the Latin word candere which means to glow, shine or shoot out light.
candle (n.)
Old English
candel "lamp, lantern, candle," an early ecclesiastical borrowing from Latin
candela "a light, torch, candle made of tallow or wax," from
candere "to shine," from PIE root
*kand- "to glow, to shine, to shoot out light" (source also of Sanskrit
cand- "to give light, shine,"
candra- "shining, glowing, moon;" Greek
kandaros "coal;" Welsh
cann "white;" Middle Irish
condud "fuel").
Do I think lamp stand would be a better word... yes I do, but who am I to decide the words that God uses in his word. Just because I think another word would have been better deosn't mean another word would serve God's purposes. There is a reason why the KJV translators used candle and candlestick, but I don't know that reason yet... I'm sure there is a golden nugget hidden in those words though.