An annular light emitting unit emits light from the inside of a louver toward an outer circumference, with respect to the entire circumference direction. A surface emitting unit emits light in a vertical direction directed opposite to a casing. Light intensity of the surface emitting unit is greater than light intensity of the annular light emitting unit.

A soffit vent cover is provided comprising a four-sided frame assembly having an inner side and an outer side, each defining an open middle. A screen is attached to the inner side, and a vent panel with apertures is attached to the outer side, both covering the open middle. A continuous perimeter channel is formed along the side surfaces of the frame assembly, sized to house a light string comprising a plurality of lamps. A solar power system provides power to the light string, including a photovoltaic panel, charge controller, rechargeable battery, and main controller. Additional components include a photocell for automatic activation during low-light conditions, a timer for scheduled operation, a mode switch for selecting lighting patterns, and a radio transmitter for remote control. The illuminating soffit vent cover combines ventilation functionality with aesthetic illumination, enhancing residential curb appeal while maintaining proper attic airflow without complex electrical infrastructure.