A vehicle illumination device includes a light source and a long light guide body that extends linearly in a direction of entry of light from one end thereof disposed so as to be adjacent to the light source and radiates light from a linear light-emitting face, the light guide body having formed thereon projecting parts arranged in a longitudinal direction on a back face of the light-emitting face and extending in a direction orthogonal to the direction of entry of light. The widths of the projecting part vary in accordance with the distance from the light source. Provided is a vehicle illumination device that enables light emission with uniform luminance in the longitudinal direction to be realized while improving the productivity of a light guide body.

Disclosed is a cabin system configured to acquire first information about a first user and second information about a second user through a communication device, to specify each of the first user and the second user based on image data received from an internal camera or an external camera, to provide a control signal to a display or a speaker such that content is provided to a user based on an electrical signal generated by an input device, to determine a first boarding seat of the first user among seats according to the first information and to determine a second boarding seat of the second user among the seats according to the second information, and to determine the posture of the first boarding seat according to the first information and to determine the posture of the second boarding seat according to the second information.

A light pipe is provided that includes a light transmissive medium having an input at one end and configured to be operatively coupled to a light source, wherein the light transmissive medium defines a first portion connected to a second portion via a first bend portion of about 90°, and a series of prisms formed in the light transmissive medium, each prism having a V-shaped groove with an incline angle of about 45°, wherein each prism has a depth and a length that increases from the first portion to the second portion, and wherein a separation gap between adjacent prisms decreases from the first portion to the second portion. The light pipe may have third and fourth portions and form a U-shape.

A light pipe is provided that includes a light transmissive medium having an input at one end and configured to be operatively coupled to a light source, wherein the light transmissive medium defines a first portion connected to a second portion via a first bend portion of about 90°, and a series of prisms formed in the light transmissive medium, each prism having a V-shaped groove with an incline angle of about 45°, wherein each prism has a depth and a length that increases from the first portion to the second portion, and wherein a separation gap between adjacent prisms decreases from the first portion to the second portion. The light pipe may have third and fourth portions and form a U-shape.

A photoluminescent aircraft floor path marking system includes at least a flexible track having a housing incorporating a flexible, pliable, photoluminescent portion in which the track is bendable to a radius of 1 m or less and the track has a length of at least 2 m, where the track is pliable such that it can retain a rolled or bent radius. The track may be bendable to a radius of from 0.01 m to 1.0 m or optionally from 0.01 m to 0.5 m. The flexible track may be provided in lengths of from 3 m or greater or greater than 10 m. A flexible protective layer may be provided. The flexible housing may include a holder for the photoluminescent material.

A photoluminescent aircraft floor path marking system includes at least a flexible track having a housing incorporating a flexible, pliable, photoluminescent portion in which the track is bendable to a radius of 1 m or less and the track has a length of at least 2 m, where the track is pliable such that it can retain a rolled or bent radius. The track may be bendable to a radius of from 0.01 m to 1.0 m or optionally from 0.01 m to 0.5 m. The flexible track may be provided in lengths of from 3 m or greater or greater than 10 m. A flexible protective layer may be provided. The flexible housing may include a holder for the photoluminescent material.

An aircraft includes an aircraft cabin having a number of rows of seats, at least one aisle, and at least one exit. An emergency lighting system having a first and second lines on opposing sides of the aisle, each line comprising a non-continuous series of photoluminescent markers separated by at least a longitudinal distance in the direction of the respective line. An exit path identifier is arranged to guide passengers from the aisle to the exit. Each line comprises an alternating series of first and second markers. The first photoluminescent markers have a first length and the second markers have a second length, the first length either the same as or shorter than the second length. At least the second markers are located on or adjacent to a seat adjacent to the aisle and the first markers are arranged to block the non-exit paths.

A utility rail for a vehicle, includes an inward surface with a utility void, an outward surface opposite to the inward surface, and a light void that is open to the exterior of the utility rail and that is separate from the utility void. A light is received in the light void and has an emitter from which light is emitted from the at least one light void to illuminate an area adjacent to the utility rail. The utility rail may be a one-piece metal extrusion and the light void may be a downward facing channel provided in the extruded rail.

This document describes a pedestrian alert system that can draw a driver's attention to a pedestrian on or near a roadway. The described pedestrian alert system can help prevent collisions with pedestrians and other objects in poor visibility environments or when drivers may be distracted. For example, a system can determine a presence of an object in or near a travel path of a host vehicle. The system can also determine the object's position relative to the host vehicle and control a light bar to provide an indication of the object. The indication can have specific characteristics to indicate the object's position relative to the host vehicle. In this way, the described pedestrian alert system can utilize sensors to focus a driver's attention on an object before a potential crash occurs and reduce the number of traffic-related deaths.

A light guide includes a rod-shaped first light guide portion including a prism surface including a prism to reflect internally propagating light and output the light to an outside along a lengthwise direction thereof, a rod-shaped second light guide portion including a light intake portion to take in light from a light source, and a rod-shaped intermediate light guide portion between the first light guide portion and the second light guide portion provided such that side surfaces thereof are connected to side surfaces of the first light guide portion and the second light guide portion. A thickness of the intermediate light guide portion is smaller than a thickness of the first light guide portion and a thickness of the second light guide portion. A side surface of the intermediate light guide portion on a side of the prism surface is continuous with the prism surface in a same plane.