A light-emitting device, comprising: a reflector formed of a housing having an opening at an upper portion thereof; a pair of an anode electrode terminal and a cathode electrode terminal; and a first light-emitting portion on which first light-emitting elements are mounted and a second light-emitting portion on which second light-emitting elements are mounted, the first light-emitting portion and the second light-emitting portion being arranged in parallel inside the reflector so as to be electrically connected in parallel to leads of the anode electrode terminal and the cathode electrode terminal inside the reflector and being adjacent to each other inside the reflector, wherein the first light-emitting portion includes a first resistance member inside the reflector, and wherein a color temperature of light emitted from the opening of the reflector in which the first light-emitting portion and the second light-emitting portion are disposed can be adjusted by using power supply from a single power source, characterized in that the pair of the anode electrode terminal and the cathode electrode terminal is disposed on a side wall or a bottom surface of the housing, and the light-emitting device further comprises: an electrostatic capacity member arranged and electrically connected in parallel with the first light-emitting portion and the second light-emitting portion inside the reflector; and a second resistance member arranged and electrically connected in series with the first light-emitting portion, the second light-emitting portion, and the electrostatic capacity member inside the reflector. a reflector formed of a housing having an opening at an upper portion thereof; a pair of an anode electrode terminal and a cathode electrode terminal; and a first light-emitting portion on which first light-emitting elements are mounted and a second light-emitting portion on which second light-emitting elements are mounted, the first light-emitting portion and the second light-emitting portion being arranged in parallel inside the reflector so as to be electrically connected in parallel to leads of the anode electrode terminal and the cathode electrode terminal inside the reflector and being adjacent to each other inside the reflector, wherein the first light-emitting portion includes a first resistance member inside the reflector, and wherein a color temperature of light emitted from the opening of the reflector in which the first light-emitting portion and the second light-emitting portion are disposed can be adjusted by using power supply from a single power source, characterized in that the pair of the anode electrode terminal and the cathode electrode terminal is disposed on a side wall or a bottom surface of the housing, and the light-emitting device further comprises: an electrostatic capacity member arranged and electrically connected in parallel with the first light-emitting portion and the second light-emitting portion inside the reflector; and a second resistance member arranged and electrically connected in series with the first light-emitting portion, the second light-emitting portion, and the electrostatic capacity member inside the reflector. an electrostatic capacity member arranged and electrically connected in parallel with the first light-emitting portion and the second light-emitting portion inside the reflector; and a second resistance member arranged and electrically connected in series with the first light-emitting portion, the second light-emitting portion, and the electrostatic capacity member inside the reflector.