Illuminated display using ambient natrual or artificial light

Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness

Patent

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428134, 428137, 428168, 428172, 428213, 4285422, 428913, 40541, 40542, 40553, 40584, 40627, 156 67, 156209, 156219, 156250, 264167, 264241, 427 64, 427289, B32B 328, G09F 1300

Patent

active

055365582

ABSTRACT:
A display is constructed from translucent fluorescent plastic sheet material providing an ambient light capturing and intensifying light conduit. Area dimensions are selected appropriate to a sign or other display and a thickness is selected for structural support of the display and for capturing, intensifying and conducting ambient light along the thickness of the light conduit to intensify captured light as in a wave guide. A substantially opaque reflective layer is formed on one side of the light conduit. A decorative layer is formed over the reflective layer and is selected to provide a desired sign decor. Grooves are formed in the light conduit through the reflective decorative coating in the pattern of the selected display. The grooves are formed to a depth to intercept light captured in the light conduit. The grooves provide angled surfaces which refract, capture and illuminate light out of the light conduit. Some light refracted out of the light conduit at the angled surfaces illuminates the selected grooves of the display. Grooves formed in the light conduit are of a shape to provide refraction of captured concentrated light within the light conduit and preferably substantially semicircular cross section to better simulate the effect of neon. The edges of the light conduit can also be formed with a bevel angle edge. Displays can be formed in a variety of configurations including boxes, enclosures, shades, covers, table top displays and sign displays generally. A variety of colors and aesthetic effects is achieved by incorporating other layers opposite the reflective layer into the sign structure.

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patent: 5009019 (1991-04-01), Erlendsson et al.

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