| 摘要 |
Provided is an illuminating device, from which constant illuminance can be obtained in a short time, even when the illuminating device is used for a street light or the like at a cold place, for instance, at a temperature below zero, even the illuminating device uses a cold cathode light emitting body having high light emitting efficiency and a long service life. In the illuminating device, a cold cathode light emitting body (7) extends in a tube main body (4) in the tube axis direction, and a heat generating means (40) for warming the cold cathode light emitting body (7) when a current is carried is arranged inside the tube main body (4). |
