Light fixture for use in hazardous environments having adapter ring for alternative ballast housing

An adapter ring for a lighting fixture specially adapted for use in hazardous locations, said lighting fixture including a mounting plate, a ballast housing, and bulb means, said mounting plate having a lower edge portion, said adapter ring comprising;

• a top portion adapted to engage said mounting plate, having first fastening means associated therewith for removably securing said adapter ring to said mounting plate, said top portion comprising a frustoconical section having an upper edge adapted to sealingly engage said lower edge portion of said mounting plate;
• and,
• a bottom portion adapted to engage a ballast housing, having second fastening means associated therewith for removably securing said adapter ring to said ballast housing, said bottom portion comprising a generally vertical section contiguous with said frustoconical section having a lower edge adapted to sealingly engage an upper edge portion of said ballast housing;
• said adapter ring being securable intermediate said mounting plate and said ballast housing.

A lighting fixture assembly for use in hazardous locations, comprising:

• a mounting plate, securable to a structure suitable for suspending said lighting fixture, having a lower edge;
• a ballast housing having an upper edge;
• an adapter ring for use with said ballast housing, having an upper edge sealingly engaged with said lower edge of said mounting plate, and having a lower edge sealingly engaged with said upper edge of said ballast housing, said adapter ring including first fastening means for removably securing said adapter ring to said mounting plate, and second fastening means for removably securing said adapter ring to said ballast housing, said first fastening means comprising a first hinge member for hingedly securing said adapter ring to said mounting plate, said adapter ring being selectively moveable between open and closed positions, and a first screw for retaining said adapter ring in said closed position;
• and
• bulb means associated with said ballast housing.

A lighting fixture for use in hazardous locations, comprising:

• a mounting plate, securable to a structure suitable for suspending said lighting fixture;
• an adapter ring, hingedly secured to said mounting plate and selectively moveable between open and closed positions;
• ballast housing means, hingedly secured to said adapter ring and selectively moveable between open and closed positions;
• and
• bulb means, operatively connected to said ballast housing means.