Abstract:
The exemplary embodiments disclosed herein provide a heat exchanger assembly for cooling power module bricks, having a plurality of heat exchanger layers where a top layer is in conductive thermal communication with the power module brick. A series of metallic plates are preferably positioned within each heat exchanger layer and are preferably aligned with the power module brick. A circulating fan may be positioned to force circulating gas across the power module brick and through the heat exchanger. An external air fan may be positioned to force external air through the heat exchanger. Pass through junctions may be positioned near edges of the heat exchanger to permit the circulating gas to cross paths with the external air without allowing the two gas flows to mix with one another.
Abstract:
The exemplary embodiments herein provide a system for cooling an electronic display where a plate is positioned behind the electronic display, the space between the plate and the electronic display defining a first channel. A first fan is preferably positioned to force a first flow of external air through the first channel. A heat exchanger is preferably positioned adjacent to the plate where the space between the heat exchanger and the plate defines a second channel; and a second fan is preferably positioned to force a second flow of external air through the second channel and through the heat exchanger. A continuous heat sink may be placed within the first channel. Pass through gaskets may be used to ensure the external air may cross paths with the circulating gas without permitted the external air and circulating gas to mix.
Abstract:
A system and method for altering the characteristics of a display based on environmental data is disclosed. Exemplary embodiments provide a light sensor, an environmental processing unit which is adapted to receive electrical signals from the light sensor and generate an environmentally-reactive control signal (Sa), an image signal processor which accepts Sa and an encoded image signal (Se) and generates a pre-decoding image signal (Sp), and an image signal decoder which accepts Sp and generates a decoded image signal for the display. The environmentally-reactive control signal (Sa) may contain the instantaneous value of the desired display black level Sb. Alternatively or additionally, the environmentally-reactive control signal (Sa) may contain a signal linearity modification value.
Abstract:
A system and method for controlling subsections of an LED backlight for a liquid crystal display (LCD). Exemplary embodiments analyze the histograms for each subsection of the LCD which corresponds with the subsections of the LED backlight in order to produce a proper luminance for the backlight subsection. The proper luminance may be less than the maximum or typical luminance that is produced by common LED backlights. By reducing the luminance the resulting display can have less power consumption, longer lifetime, and higher contrast ratios. The original subpixel voltages for the LCD are re-scaled based on the proper luminance for the backlight subsection. Virtual backlight data may be created to simulate the luminance at each subpixel and the virtual backlight data may be used to re-scale the original subpixel voltages. The virtual backlight data may be used to blend between adjacent subsections of the LED backlight which may be producing different levels of luminance.
Abstract:
Exemplary embodiments provide a lighting system for a transparent LCD having opposing vertical edges, the system having a mullion lighting assembly positioned adjacent to each vertical edge of the transparent LCD, each mullion lighting assembly having sidewalls defining a center channel. A plurality of LEDs are positioned along the sidewall of each mullion assembly and on a side of the sidewall that opposes the center channel. The LEDs are preferably placed in conductive thermal communication with the sidewall. A fan is positioned to draw cooling air through the center channel. A lens may be positioned adjacent to the LEDs to collimate the light. Louvers may be used to direct the emitted light away from the LCD, so as to reflect off the goods within a display case or the cavity within the display case. Some embodiments may use a flange to direct the emitted light away from the LCD.
Abstract:
Display assemblies with condensation control are disclosed. A cover is positioned forward of an electronic display layer located within a housing. Fans and sensors are located at an airflow pathway extending within the housing. A controller receives readings from the sensors, determines which of the readings is, relatively, highest, and drives each of said fans based on the relatively highest one of the readings in accordance with a control scheme for each of the fans, where the control scheme is dependent upon the readings.
Abstract:
Display assemblies and related systems and methods are disclosed for reducing circuit breaker trips. Electronic equipment of the display assembly, including an electronic display, is interposed between external power source(s) and circuit breaker(s). A controller receives data from power monitoring equipment electrically interposed between the circuit breaker(s) and the electronic equipment. Where the power consumption exceeds a predetermined threshold, which is established below the trip threshold, the controller causes the electronic equipment to adjust operations to reduce power consumption, thereby reducing the likelihood of the circuit breaker(s) tripping.
Abstract:
Display assemblies for preventing delamination of an optical stack are disclosed. A continuous, interconnected airflow pathway includes each of a first, second, and third airflow passageways, where the first airflow passageway is located, at least in part, forward of the optical stack, the second airflow passageway is located, at least in part, rearward of the optical stack, and the third airflow passageway is located, at least in part, rearward of the second airflow passageway. One or more fan units are positioned along the continuous, interconnected airflow pathway, and when activated, push gas through the continuous, interconnected airflow pathway, including into the first and second airflow passageways to generate compressive forces by the gas at the optical stack.
Abstract:
Display assemblies providing electric vehicle charging are disclosed which include side assemblies connected to a frame having an electronic display and power supplies and electric vehicle charging equipment, including internal and external components. The electric vehicle charging equipment and the one or more side assemblies are each connectable to an external power supply in a manner which electrically separates power supplied to at least a bulk energy storage device of the electric vehicle charging equipment from power supplied to at least an electronic display subassembly power supply of the one or more side assemblies.