Light emitting module

A light emitting module comprising:

• a module body having a first side and a second side opposite to the first side;
• a light source unit located at the first side of the module body;
• an air hole formed through the module body from the first side of the module body to the second side of the module body for allowing air to flow therethrough;
• and
• an optical cover covering the light source unit, the optical cover having a cover hole at a location corresponding to the air hole,
• wherein the optical cover comprises:
• a partition wall protruding from a first side of the optical cover, the partition wall extending into the first side of the module body to seal the light source unit;
• and
• a pair of fitting wings protruding outward from opposite ends of the optical cover, the fitting wings being inserted into the module body.