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 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.

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.

A modular light emitting diode (LED) mounting configuration is provided including a light source module having a plurality of pre-packaged LEDs arranged in a serial array. The module includes a heat conductive body portion adapted to conduct heat generated by the LEDs to an adjacent heat sink. As a result, the LEDs are able to be operated with a higher current than normally allowed. Thus, brightness and performance of the LEDs is increased without decreasing the life expectancy of the LEDs. The LED modules can be used in a variety of illumination applications employing one or more modules.

A modular light emitting diode (LED) mounting configuration is provided including a light source module having a plurality of pre-packaged LEDs arranged in a serial array. The module includes a heat conductive body portion adapted to conduct heat generated by the LEDs to an adjacent heat sink. As a result, the LEDs are able to be operated with a higher current than normally allowed. Thus, brightness and performance of the LEDs is increased without decreasing the life expectancy of the LEDs. The LED modules can be used in a variety of illumination applications employing one or more modules.

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.

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.