Illumination device

An illumination device comprising:

• a light source;
• a diffuser having a scattering structure to scatter light that has entered the diffuser, and having at least one light entrance surface, a first light exit surface from which first outgoing light including scattered light produced by the scattering structure goes out, and a second light exit surface from which second outgoing light different from the first outgoing light goes out, and receiving incoming light from the light source and producing the first and second outgoing light;
• a sunshine formation portion provided at least at one position around the diffuser, having a light-transmitting member, and performing by using the second outgoing light;
• a turning portion to guide the second outgoing light toward the sunshine formation portion;
• a light-blocking portion provided at least at one position between the first light exit surface and the sunshine formation portion, wherein
• the first outgoing light goes out from the first light exit surface to a space faced with the first light exit surface,
• at least a part of the second outgoing light is oriented by the turning portion, to go out from the sunshine formation portion toward the space, and
• the light-blocking portion is provided for inhibiting the first outgoing light from entering the sunshine formation portion via the space, and for inhibiting the second outgoing light from entering the diffuser.