Lighting device for operation panel and electronic device

A lighting device that illuminates an operation panel from a back thereof, the operation panel comprising a plurality of operation keys arranged in a plane, the operation keys each having at least one display area capable of transmitting light, the display areas on the operation panel being divided into a plurality of groups, each having at least one display area, the lighting device comprising:

• at least two sheet-shaped lightguide members corresponding to the plurality of groups, respectively, the sheet-shaped lightguide members being stacked at a back of the operation panel;
• and
• at least one light source provided to face at least one edge of each of the sheet-shaped lightguide members to emit light through the edge of the each sheet-shaped lightguide member that guides the light;
• the each sheet-shaped lightguide member having at least one light-emitting area that deflects and emits the guided light toward the at least one display area of the corresponding group.