US Patent 10488035 Illumination device and display screen apparatus thereof

An illumination device connected to a display screen having a front display surface and a rear installation surface parallel to each other includes a light source, a mounting plate, and a support mechanism. The light source emits light to form an illumination area defined by a first illumination boundary close to the front display surface and a second illumination boundary away from the front display surface. The mounting plate is detachably attached to the rear installation surface. The support mechanism is connected to the light source and the mounting plate respectively, for keeping the first illumination boundary parallel to the front display surface or inclined outwardly at a first inclined angle relative to the front display surface.