Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.

In one general aspect, the subject matter described in this specification can be embodied in a display case door that includes an insulated panel assembly that is transparent to visible light. The door further includes a door frame extending about and secured to a peripheral edge of the insulated panel assembly, an electronic display overlaying the insulated panel assembly, and at least one display retainer secured to the door frame and having a coupling end that mates with the electronic display to releasably secure the display to the door frame.

A wall panel system including a first wall panel, the first panel including at least a first panel hook portion. The system also including a second wall panel having a different configuration than the first wall panel. The second panel includes at least a second panel hook portion and a third panel hook portion opposing the second panel hook portion. The first wall panel is configured to engage with the second wall panel to create a wall panel assembly.

A method for reducing sweating in a temperature-controlled display device includes receiving values of an ambient temperature, a door frame temperature, and relative humidity. The method can also include estimating a value of a dewpoint temperature using the values of the ambient temperature and the relative humidity. The method can also include determining control decisions for a door frame heater of the temperature-controlled display device using the value of the dewpoint temperature and the door frame temperature, and transitioning the door frame heater between an on-state and an off-state using the control decisions to maintain the value of the door frame temperature at or above the value of the dewpoint temperature.

A modular shelving system includes a plurality of shelves, each shelf having a length and defining a first passage, a second passage, a first channel, and a second channel that each extend the full length of their respective shelf The system also includes a plurality of bars, each bar defining a length and including a first bar opening at a first end and a second bar opening at a second end opposite the first end, and a plurality of connectors, each connector including at least two male portions, each male portion sized and shaped to be received in one of the first passage, the second passage, the first bar opening, and the second bar opening to interconnect each of the plurality of shelves and each of the plurality of bars.

A display case door includes a sealed glass unit assembly, a door frame, and an electronic display. The sealed glass unit assembly includes a sealed glass unit and a subframe extending about and coupled to the sealed glass unit. The subframe includes a set of two or more subframe rails configured to hold the sealed glass unit. The door frame is coupled to the subframe and configured to support the sealed glass unit assembly in the door frame. The electronic display is coupled to the door frame in front of the sealed glass unit. The door frame is configured to couple with a display case enclosure in an opening of the display case enclosure.

A display case door includes an insulated panel assembly, a door frame, and one or more mounting blocks. The insulated panel assembly is transparent to visible light. The door frame extends about and is coupled to the insulated panel assembly. The one or more mounting blocks are coupled to and extend inwardly from the door frame. The electronic display assembly includes an electronic display, and one or more side brackets coupled to the electronic display. At least one of the side brackets of the electronic display assembly is coupled to at least one of the one or more mounting blocks. The electronic display is at least partially supported on at least one of the one or more mounting blocks.

An in-airport guitar kiosk and related methods for allowing air travelers an opportunity to relax and play guitar before or after flights (to improve the passenger journey) as well as the opportunity to try a novel travel guitar uniquely suited for air travel.

A transparent electronic display layer is placed between a front and rear transparent layer. A light guide is positioned behind the transparent electronic display layer and has an outer edge. Lighting elements are positioned adjacent to the outer edge. A cavity is positioned adjacent to and on an opposing side of the lighting elements as compared to the light guide such that light exiting the lighting elements enters both the light guide and the cavity. A graphic may be provided at the cavity.

A wall panel system including a first wall panel, the first panel including at least a first panel hook portion. The system also including a second wall panel having a different configuration than the first wall panel. The second panel includes at least a second panel hook portion and a third panel hook portion opposing the second panel hook portion. The first wall panel is configured to engage with the second wall panel to create a wall panel assembly.