A light-emitting device includes a substrate, an induction coil and at least one light-emitting unit. The induction coil is located on a side of the substrate, and the induction coil includes turns of conductive wiring disposed helically around a central region. The at least one light-emitting unit is located on a side of the induction coil away from the substrate. The light-emitting unit includes a first electrode and a second electrode, one of which is connected to an innermost turn of conductive wiring in the induction coil, and another one of which is connected to an outermost turn of conductive wiring in the induction coil. An area of a portion the central region covered by the at least one light-emitting unit in a direction perpendicular to the substrate is less than or equal to 50% of an area of the central region.