Patent Number: 6,308,444

Title: Light illuminated display board and lampshade using light refraction and reflection effect of transparent acrylic plastic plates

Abstract: A light illuminated display board and a lampshade using a light refraction and reflection effect in laminated transparent acrylic plastic plates is disclosed. The plastic plates are precisely cut at their four edge surfaces to form specifically angled and segmented edge surfaces individually having two to five surface segments. At least one of opposite surfaces of each plastic plate is inscribed with desired letters, symbols, figures or a combination of them. The display board or the lampshade of this invention thus clearly displays the desired letters, symbols, figures or the combination of them on its display surface while illuminating them using a variety of color light beams. Due to heat dissipating bodies set between the light bulbs and the angled and segmented edge surfaces of the plastic plates, heat of the light bulbs is actively and effectively dissipated to the surroundings, and so the display board or the lampshade is thus usable for a lengthy period of time without being thermally distorted or damaged. Each transparent acrylic plastic plate is also provided with grooves having a V-shaped cross-section, scratched areas, and specifically cut color sheets, thereby accomplishing a desired clear displaying effect in addition to a cubic effect for the letters, symbols or figures to be displayed on the display surface.

Inventors: Ki; Kil Woong (Nowon-Ku, Seoul,139-224, KR)

Assignee:

International Classification: F21V 8/00 (20060101); F21V 1/22 (20060101); F21V 1/00 (20060101); F21V 1/04 (20060101); F21S 10/00 (20060101); F21S 6/00 (20060101); G09F 13/00 (20060101); G09F 013/18 (); G01D 011/28 (); F21V 007/04 (); F21V 009/00 (); F21V 029/00 ()

Expiration Date: 10/30/2018