A light-emitting device (10, 20, 30) comprising: a fluorescent plate having a first surface and a second surface opposite to the first surface and configured to emit fluorescent light; a first light source disposed such that the first surface of the fluorescent plate can be irradiated with first light; a second light source disposed such that the second surface of the fluorescent plate can be irradiated with second light; a reflector having a light passing hole through which the second light can pass and a concave reflecting surface covering at least a region irradiated with the second light on the second surface of the fluorescent plate; and a lens disposed in a space closer to the first surface of the fluorescent plate, the lens collecting reflected light of the first light off the first surface of the fluorescent plate and fluorescent light emitted from the fluorescent plate excited by the first light and the second light; wherein: the reflector is located only on the side of the second surface of the fluorescent plate, an opening portion of the reflector is entirely covered with the fluorescent plate, a regularly reflected light of the first light reflected off the first surface of the fluorescent plate travels along an optical axis of the light-emitting device (10, 20, 30), and the first surface of the fluorescent plate is disposed in the irradiation direction of the light-emitting device (10, 20, 30); characterized in that the fluorescent plate is configured to emit fluorescent light by laser irradiation; the first light source is a first laser light source emitting the first light as first laser light; the second light source is a second laser light source emitting the second light as second laser light; and the fluorescent plate has a planar shape and is disposed with respect to the light emission surface of the first laser light source by about 45 degrees. a fluorescent plate having a first surface and a second surface opposite to the first surface and configured to emit fluorescent light; a first light source disposed such that the first surface of the fluorescent plate can be irradiated with first light; a second light source disposed such that the second surface of the fluorescent plate can be irradiated with second light; a reflector having a light passing hole through which the second light can pass and a concave reflecting surface covering at least a region irradiated with the second light on the second surface of the fluorescent plate; and a lens disposed in a space closer to the first surface of the fluorescent plate, the lens collecting reflected light of the first light off the first surface of the fluorescent plate and fluorescent light emitted from the fluorescent plate excited by the first light and the second light; wherein: the reflector is located only on the side of the second surface of the fluorescent plate, an opening portion of the reflector is entirely covered with the fluorescent plate, a regularly reflected light of the first light reflected off the first surface of the fluorescent plate travels along an optical axis of the light-emitting device (10, 20, 30), and the first surface of the fluorescent plate is disposed in the irradiation direction of the light-emitting device (10, 20, 30); characterized in that the fluorescent plate is configured to emit fluorescent light by laser irradiation; the first light source is a first laser light source emitting the first light as first laser light; the second light source is a second laser light source emitting the second light as second laser light; and the fluorescent plate has a planar shape and is disposed with respect to the light emission surface of the first laser light source by about 45 degrees. the reflector is located only on the side of the second surface of the fluorescent plate, an opening portion of the reflector is entirely covered with the fluorescent plate, a regularly reflected light of the first light reflected off the first surface of the fluorescent plate travels along an optical axis of the light-emitting device (10, 20, 30), and the first surface of the fluorescent plate is disposed in the irradiation direction of the light-emitting device (10, 20, 30); characterized in that the fluorescent plate is configured to emit fluorescent light by laser irradiation; the first light source is a first laser light source emitting the first light as first laser light; the second light source is a second laser light source emitting the second light as second laser light; and the fluorescent plate has a planar shape and is disposed with respect to the light emission surface of the first laser light source by about 45 degrees.