An illuminated vehicular sign is provided including a vehicle and luminescent planar sheet. The luminescent planar sheet is constructed to provide illuminated alpha-numeric characters which are mounted to the horizontal planar surfaces of a vehicle. The alpha-numeric characters are mounted substantially horizontally so as to be seen from the air such as by helicopters or planes. The illuminated vehicle sign includes a switching system electrically connected to the luminescent planar panels for selectively controlling the transfer of power from said power source to the luminescent planar panels. The switching system including one or more adjustable variable resistors electrically connected to the luminescent planar panels for allowing one to selectively adjust the wattage provided to them.

Embodiments herein describe systems and methods for visually identifying a wheeled robot and associating the wheeled robot with a company or brand. Some embodiments provide a cover, casing, or skin that may be removably attached to the wheeled robot. The casing may feature a pattern, logo, or visuals that are associated with the company. The casing may further conform to features of the movable robot such that the casing does not impede the robot from moving and performing functions, such as transporting objects. The casing may further have a flap that removably attaches to the casing to allow access to the wheeled robot.

A passenger communication lighting display on or adjacent a touch bar on a passenger door of a transit vehicle comprises a display that can be controlled to display multiple colors continuous or blinking, and a control means causing the display to be dark when the door is closed, the display to be a first color when the operator has authorized opening, the display to flash a second color when the passenger has requested the door be opened, the display to be blinking the second color when the door is opening, the display to be continuously the second color when the door is resting in the open position, and the display to be blinking a third color while the door is closing.

A sign board lighting assembly is provided and includes a pair of solar powered lighting modules positionally opposed at front and rear sides of a sign bar adapted by hardware to hang the sign board, each lighting module including a housing supporting a solar collection array, an energy storage medium, an illumination grid, connected together by electrical trace or wire, and an optical switching element connected to the tracing or wiring between the energy storage medium and the illumination grid, the optical switching element operable according to an optically detected threshold level of ambient natural light to open and to close a circuit in the tracing or wiring between the energy storage medium and the illumination grid.

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.

An integrated lighting system to efficiently manage battery life with indoor and outdoor modes by charging a battery during the day, turning on lights at peak night hours, and protecting the battery from overvoltage/leakage. The system comprises circuitry operable to connect to the battery and the LED light sources, the circuitry comprising a solar cell, a timer circuit, and a protection circuit. The solar cell charges the battery during daylight hours. The timer circuit regulates time periods during the day to turn on the LED light source. The overcharge circuit prevents damage from possible overcharge/leakage.

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).

A light guide plate according to one or more embodiment is formed of a panel transparent to visible light, and includes: a plurality of first prisms arranged along one surface of the light guide plate and distributed in a first pattern to reflect the visible light emitted from a first light source and entering the light guide from an input surface toward another surface of the light guide plate; and a plurality of second prisms arranged in a second pattern to reflect the visible light emitted from a second light source and entering the light guide from the input surface toward said other surface of the light guide plate. Each first prism includes a reflection surface directly facing the first light source, and each second prism includes a reflection surface directly facing the second light source.

Systems, kits and methods are disclosed which facilitate more dynamic and visually impactful backlighting of fabric panel displays. A perimeter frame assembly has a front edge, a rear edge, and a backlight cavity disposed therebetween. A front perimeter groove extends along the front edge. A display panel includes a flexible textile display substrate removably mounted in tension across the backlight cavity. A planar array of independently-activatable point light elements distributed in mutually-orthogonal X and Y directions is disposed within the backlight cavity at a gap distance from the display substrate. The gap distance is orthogonal to the X and Y directions. A controller is in data communication with the planar array for programmably controlling sequential activation and deactivation of the point light elements independently of one another. The display substrate may have a dye sublimated printed textile graphic thereon, and the point light elements may be white LEDs.