Patent ID: 7880390

Claim:
A vehicular room illuminating lamp, comprising: a plurality of illumination units including light sources which are applied with voltages through wires for individual modes and individually irradiate seat positions in a cabin of a vehicle, the seat positions being close to respective doors of the vehicle; a first switch selecting any of an all-lights-on mode, a door mode and a light-off mode and outputting a mode selection signal; and a controller that receives the mode selection signal of the first switch and door open/close signals of the plurality of doors, applies the voltages to all of the wires for the individual modes when the all-lights-on mode is selected, applies the voltage only to the wire for the individual mode connected to the illumination unit corresponding to the door indicated to be open by the door open/close signal when the door mode is selected, and does not apply the voltage to any of the wires for the individual modes irrespective of states of the door open/close signals when the light-off mode is selected.