Lighting apparatus

An illuminating device comprising:

• a light source module including a substrate and at least one light emitting device package mounted on the substrate;
• a heat radiator including a heat radiating plate having a cavity provided at a center thereof open toward a front surface thereof and receiving the light source module therein and a plurality of ventilation holes disposed along an edge of the cavity, and a plurality of heat radiating fins extending to a rear surface of the heat radiating plate and disposed in a radial manner along an edge of the heat radiating plate to dissipate heat generated by the light source module, and positioned between the plurality of ventilation holes to form ventilation channels therebetween communicating with the plurality of ventilation holes;
• a cooler fixed to the heat radiator to be in contact with ends of the heat radiating fins and including a plurality of air jet holes in a surface thereof such that air is blown to the heat radiator;
• and
• an electrical connector connected to the light source module and the cooler and supplying an external electrical signal to the at least one light emitting device package and the cooler.