| 主权项 |
1. A lighting device comprising:
a housing having a top opening and a bottom opening; an optical plate disposed in the top opening; a heat sink disposed in the bottom opening, wherein the heat sink includes a base and a projection at the base; a driving unit received in the housing, the driving unit disposed between the optical plate and the heat sink, and the driving unit to receive external electric power, wherein the driving unit includes a circuit board and a plurality of parts on the circuit board; a light source received in the housing, the light source disposed between the optical plate and the driving unit, and the light source is electrically connected to the driving unit, wherein the light source includes a substrate and a light emitting device on the substrate, and a reflector received in the housing, the reflector being between the optical plate and the light source, wherein the reflector includes:
a reflecting portion that reflects light from the light source to the optical plate, anda support that supports the reflecting portion, the support extending from a surface of the reflector to the base of the heat sink, the support to be provided adjacent to a side edge of the substrate, the support to pass through a hole of the circuit board of the driving unit and the support to be provided at the base of the heat sink, wherein the substrate of the light source is on the projection of the heat sink, wherein the circuit board of the driving unit is disposed on the base of the heat sink, wherein the housing is coupled to the base of the heat sink, wherein the substrate of the light source is separated from the circuit board of the driving unit, wherein a diameter of the projection is less than a diameter of the base, wherein the projection is disposed between the plurality of parts of the driving unit, and wherein the projection contacts a top surface of the base. |
