A plug-in connection assembly of a light-emitting diode (LED) display device, an LED box assembly and the LED display device are provided. The plug-in connection assembly of an LED display device includes a first plug-in connection member; a second plug-in connection member spaced apart from the first plug-in connection member; and an intermediate structure arranged between the first plug-in connection member and the second plug-in connection member, wherein the intermediate structure includes a third plug-in connection member and a fourth plug-in connection member that are spaced apart from each other, and a driving member for driving the third plug-in connection member and the fourth plug-in connection member to move. When the driving member is in an initial position, the third plug-in connection member and the fourth plug-in connection member are close to each other, the third plug-in connection member is separated from the first plug-in connection member, and the fourth plug-in connection member is separated from the second plug-in connection member. When the driving member is in a pushing position, the third plug-in connection member and the fourth plug-in connection member are away from each other, the third plug-in connection member is connected with the first plug-in connection member in a plug-in manner, and the fourth plug-in connection member is connected with the second plug-in connection member in a plug-in manner. The technical solution of the disclosure effectively solves the problem of insecurity caused because wires are distributed at backs of LED boxes.

A position adjustment device for a display module and a display device including the same are provided. A position adjustment device for a display module includes: a first direction control module including a first stage to which a display module is fixable, the first stage being movable in a first direction; a second direction control module coupled to the first direction control module and including a second stage movable in a second direction perpendicular to the first direction, and a first controller coupled to the second stage; and a third direction control module coupled to the second direction control module and including a third stage movable in a third direction perpendicular to the first direction and crossing the second direction, and a second controller coupled to the third stage.

A welding system includes power conversion circuitry configured to convert input power to weld power and a first housing surface. The first housing surface includes a first mating geometry configured to mate with a first complementary geometry of a first modular surface of a first modular component of the welding system.

An inverter unit includes an inverter and an inverter housing. The inverter drives an electric motor and includes at least one power module and a printed circuit board. The power module converts a High Voltage (HV) Direct Current (DC) to a three-phase Alternating Current (AC) that drives the electric motor. The power module includes lead frames to be received in apertures formed on the PCB. The PCB configured with electronic components mounted thereon controls the electric motor. The inverter housing includes a front head and a cover. The cover in conjunction with the front head defines an enclosure for receiving the inverter. The inverter unit includes support elements to support the power module in a hanging configuration with respect to the PCB.

A detachable cover module includes a bezel body, a button, and a sliding member. The button is pivotally connected to the bezel body. The button includes a pushing member. The sliding member includes a connecting portion and a guiding element. When the button is pressed in a first direction, the pushing member pushes the guiding element, so that the connecting portion moves from a position protruding outward from the bezel body toward a position not protruding outward from the bezel body. When the button is not pressed, the connecting portion of the sliding member is normally maintained at the position protruding outward from the bezel body. The detachable cover module is adapted to be pivotally connected to a body of a chassis to selectively expose or cover an opening of the chassis body.

The present invention relates to a packaging unit for a substrate, a package stack with such packaging units and a process for packaging a substrate. The packaging unit for a substrate comprises a first shell, a substrate and a second shell. The substrate is inserted into the first shell, and the second shell is mounted on the first shell so that a first side of the substrate is surrounded by the first shell and an opposite, second side of the substrate is covered by the second shell. A metal deposit is applied to the second side of the substrate and an adhesive point is arranged on the metal deposit. The second shell is supported on the first shell in such a way that the second shell is only in contact with the substrate outside the adhesive point.

Tiled displays having display tiles, are described as well as methods of making and/or operating tiled displays and tiles. Methods and devices are described for a tiled display having tiles lying in an X-Y plane, the methods and devices being for setting or adjusting the position of neighbouring tiles in a tiled display to reduce differences in the Z direction between tiles of a tiled display, whereby the tiles lie in the X-Y plane.

A display system comprises a display of one or more display surfaces, each formed from a plurality of display modules arranged in proximity. Each display module comprising light-emitting elements configured to collectively display information. The display system also comprises one or more tension members and one or more base supporting members connected to the one or more tension members and positioned proximate to one or more of the display modules located at a vertical base of the display. The one or more base supporting members are coupled to the display modules located at the vertical base such that the one or more base supporting members provide underlying support to the plurality of display modules. The one or more tension members and the one or more base supporting members support the weight of the display when the one or more tension members are connected to a support structure.

An electronic device includes a first housing including a first side surface, a second housing including a second side surface that may face at least a portion of the first side surface, a first magnet group disposed adjacent to the first side surface in the first housing and including a first designated pattern along a lengthwise direction, and a second magnet group disposed adjacent to the second side surface in the second housing and including a second designated pattern along a lengthwise direction, wherein the first designated pattern of the first magnet group and the second designated pattern of the second magnet group are alternately magnetized with an N pole or an S pole, and wherein the first housing and the second housing are coupled together to be rotatable by the first magnet group and the second magnet group.

A closed system for placing installations, especially electrical ones

The closed system for placing installations is formed by interconnected chamber modules (1, 2, 3, 4, 5) of a rectangular top view. In the connection area, the adjacent modules (1,2,3,4,5) are provided with lowered edges which overlap, and in the overlap area vertical through holes (9) are provided for module (1,2,3,4,5) fasteners. The fasteners consist of screws (11) and nuts (12). The lowered edges are provided in the horizontal abutting surfaces with horizontal coaxial passages (10). These passages (10) connect the chambers (6) of adjacent modules (1,2,3,4,5) and cables pass through them. The passages (10) are provided with a sealing grommet (13) which is made of a resilient material. The chamber modules (1,2,3,4,5) consist of two caps (7, 8) attached to each other.