An audio-visual system may include a housing comprising an open upper end and a storage space, an audio-visual device installed inside the housing and exposable through the open upper end, and a lifting device configured to expose or store the audio-visual device inside the housing through the open upper end. The audio-visual device may include a display, a speaker, and a processor configured to control the audio-visual system to operate in a first mode for outputting media art content while the display is stored in the housing according to a first event, operate in a second mode for outputting audio content through the speaker while part of the display is exposed through the open upper end according to a second event, and operate in a third mode for outputting a visual content while the entire display is exposed through the open upper end according to a third event.

Provided is a fixing apparatus which enables, when a large display is used in front of a console, easy and smooth detachment of the display itself, including touch sensor groups which respectively detect a contact with or a close approach to a display unit which is supported by a casing and which includes a display surface, from the display surface F side, and detect a contact with or a close approach to the display unit from the back surface side; and a control unit which enables detachment of the display unit from a joining arm which couples the casing and the display unit, in the case where the display unit is fixed to the joining arm, and when the contact with or the close approach from the display surface side is detected and the contact with or the close approach from the back surface side is detected.

Provided is a fixing apparatus which enables, when a large display is used in front of a console, easy and smooth detachment of the display itself, including touch sensor groups which respectively detect a contact with or a close approach to a display unit which is supported by a casing and which includes a display surface, from the display surface F side, and detect a contact with or a close approach to the display unit from the back surface side; and a control unit which enables detachment of the display unit from a joining arm which couples the casing and the display unit, in the case where the display unit is fixed to the joining arm, and when the contact with or the close approach from the display surface side is detected and the contact with or the close approach from the back surface side is detected.

An eyeglass-type video display device 1A includes a video output unit 12 configured to output video light, a first optical member 13 configured to receive the video light output from the video output unit 12 and emit the video light, and a second optical member 14 configured to receive the video light emitted from the first optical member 13 and project the video light in a direction oblique to the incident plane of the lens 50, wherein the incident plane of the first optical member 13 is arranged to be inclined to the incident plane of the lens 50 so as to suppress the distortion of the video on the incident plane of the lens 50 caused by the video light projected in a direction oblique to the incident plane of the lens 50 from the second optical member 14.

Disclosed is a host box and a split-type television, wherein the host box includes a box body and a cover plate, a circuit board is mounted within the box body, the circuit board includes an external line interface, and the box body is provided with an aperture corresponding to the external line interface; the cover plate is movably mounted at the aperture, and the cover plate can open the aperture so that the external line is directly connected to the external line interface, or the cover plate can close the aperture.

Disclosed is a host box and a split-type television, wherein the host box includes a box body and a cover plate, a circuit board is mounted within the box body, the circuit board includes an external line interface, and the box body is provided with an aperture corresponding to the external line interface; the cover plate is movably mounted at the aperture, and the cover plate can open the aperture so that the external line is directly connected to the external line interface, or the cover plate can close the aperture.

A display device includes first and second support members arranged along a first direction, a joint part therebetween, a hinge member adjacent to facing sides of the first and second support members that extends in a second direction crossing the first direction, and that includes two rotation axes, and a flexible display module on the first and second support members and the joint part. The joint part includes a first joint unit that extends in the second direction and a plurality of second joint units arranged in the first direction, where the first joint unit is interposed between the plurality of second joint units. The second joint units extend in the second direction, and each of the second joint units has recesses between side and top surfaces thereof and that extend in the second direction.

Provided is a display device or a display system capable of displaying images along a curved surface, a display device or a display system capable of displaying images seamlessly in the form of a ring, or a display device or a display system that is suitable for increasing in size. The display device includes a display panel. The display panel includes a first part and a second part and is flexible. The first part can display images. The second part can transmit visible light. The display panel is curved so that the second part and the first part overlap with each other.

A display device includes a display panel, a main circuit board facing a rear surface of the display panel and including a first main segment, a second main segment, and a first sub-segment disposed between the first main segment and the second main segment, and flexible printed circuit boards which electrically connects the display panel and the main circuit board. A first cut-away portion is defined between the first main segment and the second main segment, the first main segment is bent along a first bending line defining a boundary between the first main segment and the first sub-segment, and the second main segment is bent along a second bending line defining a boundary between the second main segment and the first sub-segment.

Mounting systems can attach electronic devices to a wall such as a wall of a television or a wall of a building. Electronic devices can generate a substantial amount of heat that can be trapped by mounting systems. The mount ventilation systems described herein can allow cool air to flow around electronic devices.