A light source unit includes a light source portion including a mounting board, a light emitting element mounted on the mounting board, a rectangular solid sealing material for sealing the light emitting element, the sealing material including a first distance between the light emitting element and a top face thereof and a second distance between the light emitting element and a side face thereof, the first distance being greater than the second distance and a phosphor dispersed in the sealing material for radiating a wavelength conversion light by being excited by light emitted from the light emitting element, wherein a first light emitted through the top face of the sealing material is different in emission color from a second light emitted through the side face of the sealing material. The light source unit further includes an optical connection member including a reflection surface for reflecting light emitted from the side face of the sealing material, and a light guiding member including an end face through which light emitted through the top face of the sealing material and light reflected by the reflection surface of the optical connection member are inputted into the light guiding member.