Patent ID: 7530713
Filing Date: 2009-05-12
Classification: F21V,G06F

Abstract:
1. A panel assembly comprising: A panel comprising a base and a bent plate perpendicular to the base, a light-pervious board disposed on the bent plate of the panel; a light sources spaced from said bent plate and facing said light pervious board; a light-reflecting member comprising a top wall, a bottom wall parallel to the top wall, and a generally embowed sidewall connecting the top wall and the bottom wall, an opening opposite to the light-pervious board being defined by edges of the top wall, bottom wall and sidewall, for reflecting some rays from the light source on the light-pervious board through the opening thereof, a folded board having two parallel sidewalls perpendicularly extending up from the top wall of the light-reflecting member and defining a receiving slot; and a light-shielding board, received in the receiving slot of the light-reflecting member, being movable along a direction perpendicular to the top wall of the light-reflecting member, wherein when the light-shielding board is positioned in an upper position, the opening of the light-reflecting member is exposed, and when the light-shielding board is positioned in a lower position, the opening of the light-reflecting member is covered and said light rays are blocked by said light-shielding board.