Abstract:
An apparatus for cooling an electronic image assembly with ambient gas and circulating gas is disclosed. A first fan may be positioned to force the circulating gas around the electronic image assembly in a closed loop while a second fan may be positioned to cause a flow of ambient gas. A structure is preferably positioned to allow the circulating gas to cross the flow of the ambient gas while substantially prohibiting the circulating gas from mixing with the ambient gas. A pair of manifolds may be placed along the sides of the electronic image assembly and may be in gaseous communication with a plurality of channels placed behind the electronic image assembly. A heat exchanger may be used in some exemplary embodiments.
Abstract:
An electronic display assembly is disclosed herein. An electronic display may be positioned within a housing where the display is cooled by a combination of airflows. A closed loop of isolated gas may be used with an open loop of ambient air which passes through the housing in order to cool the display. Preferably, the closed loop of isolated gas cools the front surface of the display while the open loop of ambient air cools the rear surface of the display. Preferably, the closed loop of isolated gas is not permitted to mix with the open loop of ambient air.
Abstract:
A sealed, transparent liquid crystal display (LCD) assembly is disclosed. The assembly preferably contains a front and a rear glass panel. The assembly also preferably has a spacer element that is positioned around a perimeter of, and sandwiched between, the front and rear glass panels, thereby providing a gaseous seal. The LCD panel is positioned between the front and rear glass panels. In an exemplary embodiment, a two way light guide would be used within the assembly.
Abstract:
The exemplary embodiments herein provide a method for controlling the luminance of an electronic display, including the steps of determining the sunset and sunrise times for the day and determining whether the present time is between sunrise and sunset or between sunset and sunrise. The backlight may be driven at a daytime level if the present time is between sunrise and sunset, while the backlight may be driven at a nighttime level if the present time is between sunset and sunrise. In some embodiments, artificial ambient sensor (AAS) data is used to determine the desired backlight or display luminance. The AAS data may be adjusted for a sunset or sunrise transition time, as well as for an approximate percentage of cloud cover in the sky.
Abstract:
A heat exchanger assembly for an electronic image assembly placed within a housing where ambient air surrounds the exterior of the housing and a rear plate may be placed behind a backlight to create a channel. An ambient air fan may be placed between two portions of a heat exchanger to force ambient air through the heat exchanger. The fan may also be positioned to also force ambient air through the channel. A circulating gas fan may also be placed within the housing to force circulating gas through at least one portion of the heat exchanger.
Abstract:
Disclosed herein is an electronic display assembly having a thermally conductive housing and a liquid crystal display positioned within the thermally conductive housing. An LED backlight may be positioned to illuminate the liquid crystal display and a thermal plate is preferably placed in conductive thermal communication with the LED backlight and with the thermally conductive housing. Heat from the LED backlight may be conductively transferred from the LED backlight to the housing. A fan may be positioned to force cooling air over the thermal plate or though one or more apertures within the thermal plate.
Abstract:
Exemplary embodiments disclosed herein provide a LCD assembly including an LED backlight, a liquid crystal display (LCD) placed in front of the LED backlight, a glass plate positioned between LED backlight and the LCD; and an optical film positioned between the glass plate and the LCD. In some embodiments, the glass plate is bonded to the rear side of the LCD, generally around the perimeter of the LCD. Preferred embodiments place a diffusing film within a cavity that is defined between the glass plate and the LCD. Some embodiments also bond the backlight cavity walls to the glass plate, on a side opposing the LCD.
Abstract:
The exemplary embodiments disclosed herein provide a transparent LCD which is placed between a front glass and a rear glass. A light guide is preferably positioned behind the LCD and contains an edge. A plurality of LEDs are positioned adjacent to the edge and a cavity is positioned on the opposite side of the LEDs as the light guide. Generally, light which is exiting the LEDs is permitted to enter both the light guide as well as the cavity. A graphic may be placed in front of the cavity and could be bonded to the front glass.
Abstract:
The exemplary embodiments herein provide a transparent LCD assembly having a liquid crystal cell with a front and rear polarizer. A light guide is preferably placed behind the LC cell and contains a plurality of LED positioned along an edge of the light guide. An additional polarizer may be placed behind the light guide and preferably bonded to the rear surface of the light guide. A front and rear glass may be used to surround the internal components. The additional polarizer can also be placed on the front or rear surfaces of the rear glass.
Abstract:
An electronic display assembly for suspending an electronic display from one or more elongate members is disclosed. A closed loop of circulating fluid, such as air, may be placed within a sealed electronics compartment. An open loop channel may permit fluid, such as ambient air, to pass through the assembly via a channel defined by the space between the back pan and the electronic display. A pair of passageways preferably extend vertically along the assembly and are configured to accommodate the passage of an elongate member. Clamps may be utilized within these passageways to secure the assembly to the elongate members.