Adjustable compact recessed lighting assembly with hangar bars

A compact recessed lighting system, comprising:

• a fire-resistant junction box having (i) a unified casting in which a light source module for emitting light is attached to a top inside surface of the unified casting and a driver circuit for powering the light source module is coupled to the unified casting, wherein the unified casting is at least partially positioned inside the fire-resistant junction box;
• and (ii) a first plurality of electrical wires coupled to the driver circuit and inside the fire-resistant junction box together with the unified casting, the first plurality of electrical wires to be connected inside the junction box to a second plurality of electrical wires from an electrical system of a building to deliver AC power to the driver circuit;
• a plurality of hangar bars for holding the junction box, along with the light source module and driver circuit housed therein, in a gap between beams in a structure, wherein the junction box is moveably coupled to the hangar bars such that the junction box is configured to slide along the hangar bars and move along an axis perpendicular to the hangar bars;
• and
• a plurality of hangar bar holders for coupling the junction box, along with the light source module and driver circuit housed therein, to the hangar bars, wherein each of the hangar bar holders includes a hangar bar holder railing structure that is configured to slide along a corresponding hangar bar;
• wherein the junction box has a sidewall and a top end that surrounds a cavity,
• wherein the sidewall defines a bottom opening of the junction box,
• wherein the junction box includes a plurality of holes each for receiving an attachment mechanism of a corresponding one of the plurality of hangar bar holders, wherein the attachment mechanism allows the junction box, along with the light source module and driver circuit, to move along the axis perpendicular to the hangar bars to ensure that a frontmost surface of the unified casting is flush or sufficiently close to a ceiling or wall through which the compact recessed lighting system is installed.

A recessed lighting system, comprising:

• a single fire-resistant junction box to contain both a light source module and at least one electrical connection to couple the light source module to an electrical system of a building or structure in which the recessed lighting system is installed;
• a unified casting disposed in the single fire-resistant junction box, the unified casting containing at least the light source module;
• a driver disposed in the single fire-resistant junction box and coupled to the light source module to provide power to the light source module;
• a first plurality of wires coupled to the driver and disposed in the single fire-resistant junction box to electrically connect the driver to the electrical system of the building or structure in which the recessed lighting system is installed;
• and
• a plurality of hangar bars coupled to the single fire-resistant junction box to hold the single fire-resistant junction box in a gap between beams in the building or structure in which the recessed lighting system is installed, wherein the single fire-resistant junction box is moveably coupled to the plurality of hangar bars to adjust a position of the single fire-resistant junction box in a direction perpendicular to a ceiling or wall of the building or structure in which the recessed lighting system is installed.