An electronic lighting device, comprising a core which comprises: an enclosure comprising a cylindrical cavity and provided with a through hole on a top thereof; a flame sheet movably supported or suspended on the enclosure, wherein the flame sheet comprises an upper sheet which is of a flame-like shape, and the upper sheet is configured to expose above the top of the enclosure through the through hole of the enclosure, and wherein the flame sheet comprises a magnet at a lower end of the flame sheet; a light-emitting element installed on a sidewall of the enclosure such that an outgoing direction of a light from the light-emitting element is inclined upward and passing through the through hole of the enclosure, wherein the outgoing direction is intersected with a surface of the upper sheet, so that the light from the light-emitting element is projected on the surface of the upper sheet; and a swing mechanism disposed beneath the flame sheet and including a coil disposed adjacent to the magnet at the lower end of the flame sheet, wherein the coil of the swing mechanism is configured to produce a magnetic field which is opposite to that produced by the magnet at the lower end of the flame sheet to actuate the flame sheet to sway or swing, characterised in that: the through hole is a circular opening formed on a top of the cavity, and the enclosure comprises notches (381, 381') on the sidewall concaved inwardly and inclined at a certain angle with respect to the sidewall in such a way that an installation location for the light-emitting element is formed, and the installation location inclines toward and communicates with the opening. an enclosure comprising a cylindrical cavity and provided with a through hole on a top thereof; a flame sheet movably supported or suspended on the enclosure, wherein the flame sheet comprises an upper sheet which is of a flame-like shape, and the upper sheet is configured to expose above the top of the enclosure through the through hole of the enclosure, and wherein the flame sheet comprises a magnet at a lower end of the flame sheet; a light-emitting element installed on a sidewall of the enclosure such that an outgoing direction of a light from the light-emitting element is inclined upward and passing through the through hole of the enclosure, wherein the outgoing direction is intersected with a surface of the upper sheet, so that the light from the light-emitting element is projected on the surface of the upper sheet; and a swing mechanism disposed beneath the flame sheet and including a coil disposed adjacent to the magnet at the lower end of the flame sheet, wherein the coil of the swing mechanism is configured to produce a magnetic field which is opposite to that produced by the magnet at the lower end of the flame sheet to actuate the flame sheet to sway or swing, characterised in that: the through hole is a circular opening formed on a top of the cavity, and the enclosure comprises notches (381, 381') on the sidewall concaved inwardly and inclined at a certain angle with respect to the sidewall in such a way that an installation location for the light-emitting element is formed, and the installation location inclines toward and communicates with the opening.