Light emitting device and lighting instrument including the same

A lighting instrument, comprising:

• a power supply connector to supply power;
• a heat sink coupled to the power supply connector;
• a light emitting module that includes a light emitting device mounted on a circuit board and is fixed to the heat sink;
• and
• a reflector that is coupled to the heat sink and reflects light emitted by the light emitting module, wherein the light emitting device includes:
• a second electrode layer;
• a light emitting structure including a second conductive semiconductor layer, an active layer and a first conductive semiconductor layer, which is provided on the second electrode layer;
• a first electrode layer including a pad part and an electrode part connected to the pad part, which is provided on the light emitting structure;
• and
• a current blocking layer arranged between the second electrode layer and the light emitting structure, wherein a part of the current block layer overlaps to correspond to the first electrode layer,
• wherein a width of one part of the current blocking layer corresponding to a first area of the electrode part, is greater than a width of another part of the current blocking layer corresponding to a second area of the electrode part, wherein the first area is closer to the pad part than the second area in a length direction of the electrode part.