LED module

An LED module comprising:

• a circuit board;
• a first light-emitting circuit which comprises a first LED group emitting light in a first color, and is mounted on the circuit board;
• a second light-emitting circuit which comprises a second LED group emitting light in a second color, a third LED group emitting light in a third color, a switch element, and a current detection element, and is mounted on the circuit board;
• and
• a first electrode, a second electrode, a third electrode, and a fourth electrode which are formed on the circuit board, wherein
• the second light-emitting circuit comprises a first current path through which a current output from the second LED group is input to one end of the current detection element, and a second current path through which a current output from the third LED group passes via the switch element and is input to one end of the current detection element,
• the first electrode and the second electrode are connected to the first light-emitting circuit,
• the third electrode is connected to the second LED group and the third LED group,
• the fourth electrode is connected to the other end of the current detection element,
• a threshold voltage for light emission of the second LED group is set to be larger than a threshold voltage for light emission of the third LED group, and
• the switch element controls a current flowing through the second current path in accordance with a current flowing via the current detection element.