Light source lighting device including a constant-current supply that is connected to a light source and supplies a constant current of a substantially constant magnitude to the light source, and luminaire

A light source lighting device comprising:

• a constant-current supply part connected to a light source and subjected to drive control in order to supply a constant current of a substantially constant magnitude which matches the drive control, to the light source;
• a light source application voltage detection part that detects a light source application voltage which is a voltage applied to the light source;
• and
• a control part that checks a light source type of the light source connected to the constant-current supply part, based on the light source application voltage detected by the light source application voltage detection part, selects, from among drive information which describe constant-current value information corresponding to constant-current values to be supplied to the light source and which are held in advance for respective light source types, the drive information on the light source type indicated by a checking result of the light source type, and drive-controls the constant-current supply part based on the constant-current value information described on the drive information selected.