Led downlight apparatus

A LED downlight apparatus, comprising:

• a light source plate mounted with a plurality of LED chips on a bottom side of the light source plate;
• a heat sink comprising a heat contact part and a heat dissipating part, a bottom side of the heat contact part heat connected to a top side of the light source plate;
• a reflective cup comprising a neck portion heat connected to the heat dissipation part and comprising an inner reflective surface surrounding the light source plate for reflecting a light emitting from the light source plate to predetermined directions;
• and
• a driver container comprising a driver circuit electrically connected to the plurality of LED chips via a conductor path through a passing hole of the heat sink for supplying a driving current to the plurality of LED chips on the light source plate, wherein the light source plate has a heat dissipating substrate for conducting heat of the plurality of LED chips to the heat sink.