VEHICLE INTERIOR LAMP

A vehicle interior lamp (1) includes a housing (10) attachable to the interior ceiling (2) of a vehicle and having an opening (13), a room light lens (21) arranged at the opening (13), a compartment (17) provided in the housing (10) and surrounding the opening (13), a light-emitting diode (31) arranged in a corner of the compartment (17) and emitting light toward the room light lens (21), and a reflector (15) arranged inside the compartment (17). The thickness of the room light lens (21) reduces as the distance from the light-emitting diode (31) increases. The room light lens (21) is provided with a protrusion (21g).