Optical semiconductor lighting apparatus

An optical semiconductor lighting apparatus, comprising:

• a housing comprising a first end portion and a second end portion, wherein the first and second end portions comprise two separate pieces forming a plurality of outer vents therebetween;
• a light source module disposed inside the housing, the light source module comprising a plurality of optical semiconductor elements;
• a reflector forming at least a portion of the second end portion of the housing, wherein:
• the reflector comprises a first surface configured to reflect light emitted from the light source module and a second surface formed opposite to the first surface;
• the second surface is exposed to ambient air;
• and
• the reflector is coupled to a plurality of end portion supports disposed on the second end portion, each of the end portion supports being separated from one another by the plurality of outer vents, respectively;
• a fan disposed inside the housing adjacent to the light source module, wherein:
• the fan is disposed above the plurality of outer vents with respect to air flow from the fan;
• the fan is configured to rotate in a first direction whereby air is blown through the plurality of outer vents towards the light source module and is ejected over the second surface of the reflector;
• an inner vent disposed in a base plate along an axis that is at an acute angle with respect to a vertical line, the inner vent being disposed between the light source module and the outer vent.