There is provided a display panel including: a light guide structure layer having a light exiting side and configured to enable internal light to be emitted from a preset position; a display structure layer on the light exiting side and including a light adjusting structure, a black matrix and a reflection matrix positioned on a side, away from the light guide structure layer, of the light adjusting structure, the light adjusting structure is configured to control light emitted from the preset position to enter an area where the black matrix is positioned and/or an area where the reflection matrix is positioned; a light absorption structure layer on a side of the light adjusting structure away from the black matrix and configured to absorb light reflected by the black matrix and allow light reflected by the reflection matrix to pass through. A display device is further provided.

Display device is provided and includes display panel; and illumination device provided on rear surface side of display panel, wherein illumination device includes light sources, and light guiding member arranged at rear surface side of display panel, light guiding member has holes which penetrates the light guiding member, light sources are housed in corresponding hole, rear surface of light guiding member has first inclined surface inclined upwardly from light source housed in one of holes, front surface side of light guiding member has second inclined surface inclined upwardly from light source housed in one of the holes, and angle of first inclined surface to center line of one of holes is greater than angle of second inclined surface to center line.

Disclosed are embodiments of a drone with a flattened tubular part protrudingly mounted on a module located on the fuselage of the drone, where the free distal end of the drone may also include a Pitot tube dynamic pressure front air intake. An internal duct may further connect the air intake to a pressure sensor mounted on the module. The tubular part may be mobile with respect to the module and may further include a means or mechanism for the mechanical coupling to a contractor mounted on the module. The tubular part may further include a light guide in light communication with a luminescent element mounted in the vicinity or at the level of the proximal end thereof. The tubular part may also include two sectionalized portions that are nested and in continuation of each other, where the base portion may be permanently linked to the module and a removable protruding portion may be located at the top base portion, which may include a front air intake and an internal duct.

An illumination device according to one or more embodiments may include: a light guide plate unit comprising a front light guide plate and a rear light guide plate arranged in a depth direction at a predetermined interval, and a light projecting unit arranged at a side of the light guide plate unit. The light projecting unit may comprise an LED in an amount of one piece among the front light guide plate and the rear light guide plate; and a moving mechanism configured to cause the light guide plate unit to reciprocate in the depth direction to cause a light incident surface of either one of the front light guide plate and the rear light guide plate to be opposed to the light projecting unit.

Provided is a display device. The display device includes a display panel, a light guide plate disposed behind the display panel, a light source module configured to emit light toward the light guide plate, a mounting housing on which the light source module is mounted, the mounting housing being made of a metal material, a back cover configured to cover the mounting housing from a rear side, a lower cover bent forward from a lower end of the back cover to cover the mounting housing from a lower side, a guide frame configured to surround a circumference of the display panel and cover the lower cover, a decor panel including a lower panel configured to cover the guide frame from a lower side and a front panel extending upward from a front end of the lower panel, a screw coupled to the lower cover by sequentially passing through the lower panel and the guide frame, and a heat insulating member disposed between a head of the screw and the lower panel.

A billboard which is formed as a dasher board (600) and adapted for use in a video content replacement system (400) is described. The dasher board (600) comprises at least one non-visible radiation source (604) arranged to emit non-visible radiation toward a light guide plate (602). The light guide plate (602) is arranged to distribute the non-visible radiation over the light guide plate (602) and radiate the non-visible radiation away from the dasher board (600). An area of the light guide plate (602) over which non-visible light is distributed from is correlated to an area of the dasher board (600) which is to be replaced in the video content replacement system (400). There is also described is a billboard (700) similarly adapted for use in a video content replacement system (400) and which comprises an electronic display, as well as a method of retrofitting an existing billboard (10) ready for use in a video content replacement system (400).

A daylight illumination system for integration into a building or larger vehicle comprises a translucent facade element (800) containing a glass sheet and a light redirection element (302 or 708), and a light transport channel (801) for guiding light about horizontally into an interior of the building, the light transport channel comprising one opening attached to the interior side of said facade element and at least one opening towards the interior of the building, characterised in that the light redirection element (302 or 708) is formed as a structured polymer film or sheet attached to a glass sheet of the facade element (800) and is configured for changing the direction of incident light into the about horizontal light transport channel.

A backlight module includes a circuit board, a light-emitting unit, a light-reflecting plate, a light guide plate, and a light-shielding sheet. The light-emitting unit is disposed on the circuit board. The light-reflecting plate is disposed above the circuit board. The light guide plate is disposed above the light-reflecting plate and includes a single-key light guide area. The single-key light guide area includes an accommodating hole and a light-blocking structure. The accommodating hole runs through the single-key light guide area and accommodates the light-emitting unit. The light-blocking structure and the light-emitting unit are arranged in a direction. The light-shielding sheet is disposed above the light guide plate.

A household refrigeration appliance has a receiving compartment for food and a planar lighting module for lighting the receiving compartment. The lighting module has a first lighting sub-module with a first plate-shaped light guide and a separate, second lighting sub-module directly adjoining the first sub-module and having a second plate-shaped light guide. The first light guide has a first edge and the second light guide has a first edge. The first edges are arranged facing one another and in a direction at right angles to a plane defined by the lighting module, an offset is formed between the first edges, so that in this direction the first edges are arranged at a distance from one another perpendicular to the plane.

A light-emitting module includes a two-dimensional array of a plurality of light-emitting units. Each of the light-emitting units includes a lightguide plate, a light source, and a light diffusing layer. The light guide plate has a first surface and a first hole portion. The first hole portion has at least one lateral surface and an opening at the first surface. The light source is provided at least partially inside the first hole portion. The light source includes a light-emitting element. The light diffusing layer covers part of the at least one lateral surface of the first hole portion.