Backlight units with quick installation and removal of light emitting structures
View Patent ↗A backlight unit comprises a chassis having a bay, wall means defining the bay, an aperture opening to the bay, and an optical panel that includes at least one light management feature. The optical panel has one side forming a wall portion of the wall means. A light emitting structure is placed within the bay to light a two-dimensional area on the one side of the optical panel. The backlight unit also comprises a bracket for quick installation and removal of the light emitting structure through the aperture to and from the bay.
1. A backlight unit comprising:
a chassis having a bay, wall means defining the bay, an aperture opening to the bay, and an optical panel that includes at least one light management feature, the optical panel having one side forming a wall portion of the wall means;
a light emitting structure placed within the bay to light a two-dimensional area on the one side of the optical panel, the light emitting structure having at least one linear light source and a power control circuit coupled to the linear light source; and
a bracket for quick installation and removal of the light emitting structure through the aperture to and from the bay, the bracket having a support structure carrying the light emitting structure, the support structure having a frame for supporting the linear light source and a circuit mount having two portions for supporting the power control circuit,
the bay within the chassis including a first region for receiving the frame of the support structure and two second regions for receiving the two portions of the circuit mount of the support structure, respectively;
the at least one linear light source including a parallel arrangement of a plurality of linear lamps;
the frame having a predetermined line and two sides spaced along the predetermined line, and each of the two portions of the circuit mount extending from one of the two sides in a remote direction from the other of the two sides;
wherein, at the two sides, the frame holds two ends of each of the plurality of linear lamps, respectively, and the circuit mount holds the power control circuit;
the bracket including at least one light leak prevention feature;
the chassis including a guide for the frame of the support structure to slide relative to the chassis;
the light leak prevention feature including a second light shield arranged to cover a clearance between the frame of the support structure and the guide of the chassis;
wherein the first region includes guide spaces defined by the guide, the guide spaces are open to the second regions, respectively, and the second regions are greater in width than the guide spaces;
wherein the frame of the support structure within the guide defines within each of the guide spaces the clearance; and
wherein the support structure includes the second light shield between each of the two sides of the frame and the adjacent one of the two portions of the circuit mount.