Troffer light fixture retrofitting kit and method to install the same

1. A retrofit kit for a lay-in troffer LED luminaire comprising:

a first and a second set of connecting beams, the first set of connecting beams comprising two beams arranged in a parallel orientation, each beam of the first set of connecting beams further comprising a long wall, a short wall, each wall being perpendicular from the other, and at least one elongated edge depending from the short wall, pointing away from, and parallel to, the long wall;

the second set of connecting beams also comprising two beams, arranged in a parallel orientation and each connecting beam further comprising a long wall, a short wall, each wall being perpendicular from the other, and at least one elongated edge depending from the short wall, pointing away from, and parallel to, the long wall, each beam of the second set of connecting beams being oriented in a perpendicular manner with respect to each of the first set of connecting beams;

multiple engaging means consisting of coupling retainers and clamping hooks that engage each set of connecting beams to each other to form a quadrangular bracket capable of containing the troffer, wherein at least the elongated edges of the first set of connecting beams are supported by supporting plates of a frame engaging to a ceiling;

a body, and

compressible and extendable fastening means placed at the lateral sides of the troffer, wherein the first or second set of connecting beams further comprise connecting holes near four corners of the troffer, the fastening means are compressed and loosen into the connecting holes when the fastening means align with the holes to make the troffer connect to the ceiling through the allocation with the bracket, wherein the fastening means comprises a bar and a fixing base which is connected to the body, the fixing base comprising a guide portion that comprises internal first guide hole for the bar to slide through, the fixing base further comprising a retaining portion arranged along the sliding direction of the bar, a springing means being arranged between the bar and the retaining portion, the bar further comprising a first protrusion having a radial area less than the bar and oriented towards the connecting hole.

2. The retrofit kit for a lay-in troffer LED luminaire of claim 1 wherein the body comprises a rectangular cross section, the bracket with the connecting beams placed at the sides of the body that encases the body, multiple connecting holes being capsule-shaped or round-shaped and being located on either one of the beams of the first or the second set of connecting beams, which receive the fastening means passing through.

3. The retrofit kit for a lay-in troffer LED luminaire of claim 1 wherein a supporting plate of the frame is capable of supporting at least the three of the four sides of the elongated edge, excluding the side of the elongated edge that points toward the body resulting in a structure that secures the connecting beams in the frame in a seamless and stable manner both in a transverse and longitudinal directions.

4. The retrofit kit for a lay-in troffer LED luminaire of claim 1 wherein the body further comprises:

a lateral plate arranged between the connecting hole and the fastening means; and

a middle hole that allows the first protrusion to pass through, the middle hole being arranged in the lateral plate, and

wherein a radial area of the middle hole is between radial areas of the first protrusion and the bar, the relative structural arrangement of the lateral plate and the middle hole preventing the bar from moving outside of the body.

5. The retrofit kit for a lay-in troffer LED luminaire of claim 1 wherein a radial area of the connecting hole measuring between radial areas of the first protrusion and the bar, resulting in a limitation of the radial area of the connecting hole that prevents the bar from moving outside of the bracket.

6. The retrofit kit for a lay-in troffer LED luminaire of claim 1 wherein an end of the bar oriented towards the retaining portion comprises a second protrusion having a radial area smaller than the bar, the springing means is sheathed outside the second protrusion, and the retaining portion comprises a second guiding hole that allows the second protrusion to pass through it.

7. The retrofit kit for a lay-in troffer LED luminaire of claim 6 wherein the springing means is a spring sheathed outside the second protrusion.

8. The retrofit kit for a lay-in troffer LED luminaire of claim 1 wherein the retaining portion comprises a second protrusion having a radial area smaller than the bar, the springing means is sheathed outside the second protrusion, and the end of the bar oriented towards the retaining portion comprises a blind hole for receiving the second protrusion.

9. A method to install a retrofit kit for a lay-in troffer LED luminaire according to claim 1 comprising the steps of:

arranging the elongated edge of each of the connecting beams immediately above the supporting plate of the frame, thus enabling the frame to support at least two of the connecting beams;

buckling the clamping hook on each of the beams of the connecting beams into the coupling retainer, so that the connecting beams matched with each other to form the rectangular bracket;

compressing the fastening means and placing the body in the bracket so that when the fastening means aligns with the connecting hole, the fastening means loosen; and

allowing two fastening means at one end of each beam of the first set or second set of connecting beams to loosen first and buckle on the bracket, connecting the wires, and the two remaining fastening means at an opposite end of each beam of the first set or second set of connecting beams to become compressed and then released to complete the encasing of the body by the bracket.

10. The method of claim 9 , further comprising:

providing electricity to the body through wiring.

11. A retrofit kit for a lay-in troffer LED luminaire comprising:

a first and a second set of connecting beams,

the first set of connecting beams comprising two beams arranged in a parallel orientation, each beam of the first set of connecting beams further comprising a long wall and a short wall, each wall being perpendicular to the other, and at least one elongated edge depending from the short wall, pointing away from and parallel to, the long wall,

the second set of connecting beams also comprising two beams arranged in a parallel orientation and each connecting beam further comprising a long wall and a short wall, each wall being perpendicular to the other, and at least one elongated edge depending from the short wall, pointing away from and parallel to, the long wall, each beam of the second set of connecting beams being oriented in a perpendicular manner with respect to each of the first set of connecting beams;

coupling retainers and clamping hooks configured to engage each set of connecting beams to each other to form a quadrangular bracket capable of containing the troffer, wherein at least the elongated edges of the first set of connecting beams are supported by supporting plates of a frame configured to engage to a ceiling;

a body; and

compressible and extendable fasteners placed at the lateral sides of the troffer, wherein the first or second set of connecting beams further comprise connecting holes near four corners of the troffer, the fasteners are compressed and loosen into the connecting holes when the fasteners align with the holes to make the troffer connect to the ceiling through the allocation with the bracket, wherein the fasteners comprise a bar and a fixing base which is connected to the body, the fixing base comprising a guide portion that comprises internal first guide hole for the bar to slide through, the fixing base further comprising a retaining portion arranged along the sliding direction of the bar, a spring being arranged between the bar and the retaining portion, the bar further comprising a first protrusion having a radial area less than the bar and oriented towards the connecting hole.