To provide a light source of comparatively low cost and with a high radiation effect.

A plurality of LEDs 22 lighting on with supply of power from a lighting board are arranged on the main face of a wiring board 21. Heat sinks 23 are provided along an outer periphery face of the wiring board 21 having the LEDs 22 arranged. The heat sinks 23 may be comparatively easily formed without the use of any specific molding die, and heat may be efficiently radiated with the heat sinks 23, since heat is transferred directly to the heat sinks 23 from the wiring board 21.