Illumination apparatus having a plurality of semiconductor light-emitting devices

An illumination apparatus comprising:

• a flat board;
• a reflective layer disposed on the flat board, the reflective layer comprising a flat light reflective surface;
• a plurality of light-emitting elements, each of the plurality of light-emitting elements comprising a translucent substrate and a light-emitting layer, the substrate including a first surface and a second surface positioned on a reverse side of the first surface, the second surfaces of the translucent substrates being directly bonded to the flat light reflective surface by translucent adhesive layers, and the light-emitting layers being formed on the first surfaces and being thinner than the substrates;
• a wiring layer being provided on the flat board, the wiring layer being thinner than the substrates of the light-emitting elements;
• a single frame disposed on the reflective layer, the single frame surrounding all of the plurality of light-emitting elements and the wiring layer;
• and
• a sealing member disposed in a single a region surrounded by the single frame, the sealing member formed of a material having a light-transmitting property and covering all of the plurality of light-emitting elements, the wiring layer, and the flat light reflective surface;
• wherein the first surfaces of the substrates of the light-emitting elements protrude at a position higher than the wiring layer.