A display unit includes a transparent or translucent layer with a display side and a rear side, with an opaque or semitransparent layer on the display side, containing a plurality of apertures, a plurality of illuminants which are present at, or at a distance from, the rear side of the transparent or translucent layer, at least partly embedded in the layer, wherein at least one illuminant is substantially behind one of the apertures in each case configured and designed to emit light in the direction of and through the aperture, a transparent or translucent lamination ply adjoining the opaque or semitransparent layer and covering the plurality of apertures, and a transparent or translucent protective layer adjoining this lamination ply. Also disclosed are a display apparatus and a traffic guidance system comprising such a display unit, and use of the display unit as a media energy façade or a daylight display.

A LED sign which can be programmed to display a desired message can be made utilizing a sign kit comprising (1) one or more faces, wherein each face is comprised of a plurality light emitting diodes; (2) a receiver having erasable, programmable read-only memory and a USB printer port plug; (3) a power supply; and (4) a USB flash drive which is adapted to connecting to the receiver through the USB printer port plug; wherein the USB flash drive is programmed to reset the erasable, programmable read-only memory of the receiver by erasing any preexisting data which may reside in the read-only memory of the receiver and to program the erasable, programmable read-only memory with auto executing script to set the desired message to be displayed. The LED sign can be mounted on a trailer for display as the sign is moving or for display in a stationary location.

A combination signboard having the characteristics of low cost, ease of fabrication, maintenance and replacement is disclosed to include a signboard body having multiple through holes, multiple display devices detachably mounted on the signboard body, each display device including a mount having a recessed portion and multiple countersunk holes located in the recessed portion, a light guide plate positioned in the recessed portion, a light source module sandwiched between the light guide plate and the recessed portion and connection members made in the form of a screw bolt and respectively mounted in the countersunk holes of the mount, and locking members made in the form of a screw nut and respectively threaded onto the screw bolt-shaped connection members to detachably lock the display devices to the signboard body.

Light emitting diode (LED) light tubes having rotatable end cap assemblies are described. The LED light tubes include a hollow tube and a circuit board with LED chips thereon. The end cap assemblies are provided on either end of the tube. Each end cap assembly includes a socket cap, a plug having a plug body and at least one connector, and an end cap body, one end of which engages one of the ends of the hollow tube. A cam locking mount that is positioned within the plug body and on the opposite side has projections to be positioned in the bore of the end cap body. A rotation cam is seated in the cam locking mount and provides for controlled rotation of the LED tube relative to the end caps. Methods of installing the LED light tubes in new installations and retrofit installations and for use in sign assemblies are also described.

The present invention relates to a transparent electronic display board that is capable of uniform optical output and, more particularly, to a transparent electronic display board that is capable of uniform optical output wherein the pattern width and length are adjusted according to the sheet resistance of a transparent electrode of the transparent electronic display board, wherein a driving voltage applied to a light-emitting device can be uniformly supplied within a constant range, and wherein multiple light sources disposed in the transparent electronic display board can emit light at uniform intensity.

The invention relates to devices and methods that help deliver dynamic messages, including advertisements on placards, medallions, and lighted campaign signs. The augmented placard of the invention includes two components: a corrugated yard sign and a medallion. A stand holds the corrugated yard sign in a specific position. The corrugated yard design displays the first message, while the emblem contains the second message. The second message is preferably independent of the first message but may be related to the first message. The medallion embeds on the corrugated yard sign by a connecting element that provides a temporary attachment between the medallion and the corrugated yard sign. The placard can contain more than one medallion attached to it. Furthermore, the placard has the provision for attachment of an illumination source to maintain the visibility of the messages in any condition, including when it is dark.

An LED module is disclosed, which includes one or more LED light sources and one or more lenses. Each lens includes a lens body. The lens body includes an inner cavity having an incident surface, an emergent surface, and a reflective surface extending between the incident surface and the emergent surface for providing total internal reflection. One LED light source is situated in the inner cavity. Light emitted from the LED light source is transmitted by the incident surface. At least portion of transmitted light by the incident surface is reflected by the reflective surface to the emergent surface so as to provide a narrow light beam angle perpendicular to a length direction of the LED module. The emergent surface has a plurality of micro structures for enlarging a light viewing angle in the length direction. A sign box using one or more LED modules is also disclosed.

There is a provided a lighting system comprising a first cable and a second cable for receiving a voltage difference. The first cable extends between a first pair of installation locations and the second cable extends between a second pair of installation locations. The lighting system also comprises a plurality of light emitting diode (LED) strips, each LED strip electrically connected to and extending between the first cable and second cable. The lighting system also comprises a cable tensioner system coupled to the first cable and second cable for adjusting the tension of the first cable and second cable.

A stop sign brake light for vehicles includes a main body having an octagonal shape, a reflective border and the word STOP that is positioned along the center of the main body. A plurality of lighted elements are along an entirety of the reflective border and the word STOP, and a controller having a wiring harness for connecting to a vehicle power source.

A light-emitting sign comprising a light source for emitting light, in which the light-emitting sign may be thin (e.g., comparable to a conventional non-light-emitting sign) while creating a desired visual effect using the light emitted by the light source. This may be achieved, for example, by the light source being thin itself and/or by having an external device connected to the light-emitting sign and implementing certain functionalities (e.g., powering and/or controlling the light source).