Lighting fixture

A cooled and protected lighting fixture comprising:

• a housing having an opening, and containing a fan, at least one heat-generating light bulb to produce light at the opening;
• a transparent or translucent refractor having proximal and distal openings positioned with its proximal opening at the housing opening;
• and
• a protective lens assembly positioned at the distal opening of the refractor and disposed across the housing opening,
• the protective lens assembly including a bottom clear lens at the distal end of the assembly having a central opening and spaced from a top clear lens to provide a first ventilation gap between the lenses while blocking direct access to the interior of the housing, the top lens having an outer edge spaced from the border of the distal opening of the refractor to form a second ventilation gap encircling the top lens,
• whereby the fan may be operated to cool the light bulb by moving air through the opening in the bottom lens to the first and second ventilation gaps and across the bulb.

A lighted facility comprising:

• an at least partially enclosed space having an upper supporting section;
• and
• at least one lighting fixture attached to the supporting section,
• the lighting fixture including
• (1) a housing having a light opening and containing a fan and at least one heat-generating light bulb to produce light at the light opening;
• and
• (2) a protective lens assembly below the housing opening,
• (3) the protective lens assembly including a top clear or translucent solid lens and a bottom clear or translucent lens having a central opening for passing air into the protective lens assembly, the bottom lens being spaced from the top lens to provide a first ventilation gap between the lenses while protecting the interior of the housing, and
• a transparent refractor having proximal and distal openings positioned with its proximal opening at the housing opening,
• the protective lens assembly being positioned with the bottom lens of the assembly at the distal opening of the refractor and the outer edge of the top lens spaced from the border of the distal opening of the refractor to form the second ventilation gap encircling the top lens,
• (4) whereby the fan may be operated to cool the light bulb by moving air through the central opening in the bottom lens to the first and second ventilation gaps and across the bulb.