The invention relates generally to illuminated signs (100) having multiple point light sources such as light emitting diode arrays as the illumination source for legend-bearing face panels and particularly to diffuser structure mountable in relation to such an array for facilitating an even distribution of light within such a sign to improve illumination of the typically translucent legend disposed on such a face panel. In particular, the invention employs a clear diffuser holder (120) that is secured to the inside surface of el the face panel thereby providing a means of removeably attaching a diffuser (130). The invention permits interchangeably employing diffusers of different colors while providing resistance to vandalism.

An instrument cluster, in particular for a vehicle, has a dial with a plurality of graphic areas, which are backlit by a device provided with at least one light source, with a front light-guiding element having a front face at least partially covered by a back surface of the dial, and with a rear light-guiding element; the latter has a receiving portion facing said light source and a transmitting portion, which transmits and guides the light received by the receiving portion and is spaced apart from and faces a rear face of the front light-guiding element; the rear face of the front light-guiding element has an optical compensation system, having curved convex or curved concave lens surfaces, for varying the intensity of the light transmitted from said transmission portion to the different graphic areas.

Provided is a side light-emitting type display device having a frame member. The side light-emitting display device having a frame member includes a display assembly configured to guide light to a side surface of the display assembly while displaying an image using light emitted from light sources; a transparent frame member which is configured to surround and fix the display assembly and through which the light guided to the side surface of the display assembly is transmitted; and a side display member provided on a side surface of the transparent frame member, and configured to display information of the image using the light guided to the side surface of the display assembly.

A lighting device for use on apparel includes a main body portion and a raised graphic portion at the front of the main body. Inside the device there is a graphic element in the raised portion that is translucent. Behind the graphic element and inside the main body of the device there is one or more lighting elements, a control circuit, and a battery. There is a power connector at a side of the main body, or in a remote connector, to charge the battery, and one or more switches either at the side of the main body or on the remote connector to allow a person to control the lighting operation of the device. The device is molded in the form of the graphic element and the graphic element, lighting element, battery, and circuitry are embedded in the molded body.

There is provided an automobile display device including: a transmitting member that is made of a light-transmitting resin, that includes, at a rear face side thereof, an irradiated portion to which light from a light source is irradiated, and that includes, at a front face side thereof, a display portion emitting light by transmitting the light that has been irradiated to the irradiated portion, plural through holes being formed at portions of the transmitting member excluding the display portion during primary molding of two-color molding; and a non-transmitting member that is made of a non-light-transmitting resin, that is filled into the through holes and provided at the front face side and the rear face side of the transmitting member during secondary molding of the two-color molding, and that exposes the irradiated portion and the display portion.

A system, apparatus and method for light diffusion and testing fixtures. The system includes remote derangement controls to test the operation of a battery backup system associated with a fixture. The light fixture may incorporate light diffusion features including back mounted light sources, channeled corners in a translucent material and/or pitted surfaces of a translucent material. The system may further include remote monitoring elements and/or sensors to evaluate proper operation of the light diffusion characteristics of a fixture during operation of the battery backup system.

An illumination assembly includes a light pipe and a light engine. The light pipe has a first edge portion including a light inlet, a first surface including a first light outlet, and a second edge portion including a second light outlet. The light engine is attached to the first edge portion and includes a light source adapted to direct light into the light inlet, whereby light subsequently exits the light pipe through the first light outlet and the second light outlet. The illumination assembly can be used as part of an illuminated sign assembly to provide backlighting and downlighting.

A light source assembly for use with a sign is provided. The light source assembly includes a set of light emitting diodes disposed on a substrate. The light source assembly includes a pair of brackets configured to secure the substrate. Furthermore, at least one bracket of the pair of brackets includes a set of lenses where each lens overlaps with a light emitting diode of the set of light emitting diodes, and the substrate is mounted perpendicularly to a backing surface of the sign.

A system, apparatus and method for light diffusion and testing fixtures. The system includes remote derangement controls to test the operation of a battery backup system associated with a fixture. The light fixture may incorporate light diffusion features including back mounted light sources, channeled corners in a translucent material and/or pitted surfaces of a translucent material. The system may further include remote monitoring elements and/or sensors to evaluate proper operation of the light diffusion characteristics of a fixture during operation of the battery backup system.

A backlight unit includes a light source part configured to emit a light and a reflective sheet disposed under the light source part. The light source part includes a first light source block including a plurality of light sources with first distances therebetween and a second light source block including a plurality of light sources with second distances therebetween. The first distances increase or decrease as the light sources of the first light source block are closer to an end portion of the first light source block than to a center portion of the first light source block, and the second distances increase as the light sources of the second light source block axe closer to an end portion of the second light source block than to a center portion of the second light source block.