Lighting apparatus

A lighting apparatus comprising:

• an LED unit formed in an elongated shape, said LED unit being provided with a plurality of lighting units on one surface in the thickness direction thereof, each of said lighting units having a LED chip;
• a main body;
• a reflective plate made of metal and configured to control the light from said LED unit to be an intended distribution, said reflective plate being held by said main body;
• a lighting device configured to light said LED unit, said lighting device being replaceably attached to said main body;
• and
• a heat radiation block to which said LED unit being replaceably attached and configured to dissipate the heat generated in said LED unit, said heat radiation block being arranged at the other surface side in the thickness direction of said LED unit,
• wherein
• said reflective plate has an installation portion for installing said LED unit,
• said heat radiation block is held by said reflective plate,
• said LED unit has a flat portion at its light extracting surface from said lighting unit, and
• said flat portion is in the same plane with a surrounding area of said installation portion in a reflective surface of said reflective plate.