During the electrodeposition and electrorefining processes of metals, the electrodes undergo severe corrosion effects. A protective device and included system are proposed, wherein the electrode protective device solves the problem, given that its design and material preferably fireproof and anticorrosive, protect the electrodes. The design encompasses the entire exterior shape of the electrode support bar including the straight parts of the electrode plate that arise from the area of the support bars on both sides.

An optical device includes: a case; a wiring substrate that passes through the case and that includes an insulating member and a conductor; at least one of components including a first component configured to perform at least one of: outputting a light; receiving a light; and varying optical properties, and a second component configured to electrically control the first component, the at least one of components being housed in the case and flip-chip mounted on the wiring substrate.

A sensor device includes a housing, a circuit substrate, a sensing element, and a sleeve. The sensor device further includes an inner cavity and a channel located on different sides of the circuit substrate, respectively. The sleeve has a cylinder wall located on a periphery of the channel. A tail end of the cylinder wall in an axial direction of the channel is sealably connected to the circuit substrate. The housing is provided with a matching part including an accommodation part and a first peripheral wall part forming the accommodation part. The sleeve is at least partially accommodated in the accommodation part. The first peripheral wall part is sealably connected to the cylinder wall. The inner cavity is not communicated with the channel. The sealing performance between the inner cavity of the sensor device and the channel is good. Also provided is a valve assembly having the sensor device.

Disclosed are a circuit board assembly and a rice cooker, where the circuit board assembly includes: a housing, including a circuit board bracket and a fireproof cover fixing and covering the circuit board bracket, where the fireproof cover and the circuit board bracket are enclosed to define a fireproof cavity; and a circuit board, mounted on the circuit board bracket and accommodated in the fireproof cavity. The present disclosure provides a fireproof cover made of a fireproof material on the circuit board. The fireproof cover and the circuit board bracket may be fixed and covered to define a fireproof cavity, and the circuit board may be accommodated in the fireproof cavity. In this way, the circuit board may be isolated from the outside, to prevent the fire from spreading when the circuit board catches fire, to ensure the safety of users' lives and property.

A display device includes an image display unit, a display case, and a heat insulating part. The image display unit has a display surface that displays an image and a display back surface opposite to the display surface. The display case has a case opposing surface opposing the display back surface and covering the display back surface. The heat insulating part is disposed between the display back surface and the case opposing surface to restrict heat from transferring from the display case to the image display unit. The heat insulating part being elastically deformed or flexibly stretched and deformed in accordance with a relative displacement of the image display unit with respect to the display case. The image display unit is fixed to the case opposing surface through the heat insulating part.

A heat-insulation device and an electronic product, the heat-insulation device is of a closed hollow structure, and includes a first cover body and a second cover body arranged opposite to each other; a vacuum cavity is formed in the heat-insulation device; the first cover body is made of a heat-conducting material; and a heat-conducting element is provided in the vacuum cavity, and a first end of the heat-conducting element is in contact with an inner wall surface of the first cover body.

An electronic device includes a device housing and heat generating electronics situated within the device housing. A thermally insulating screen defined by thermally insulating material is positioned on an exterior of the device housing. The thermally insulating screen defines a partition between the exterior of the device housing and external objects contacting the electronic device while allowing thermal energy from the heat generating electronics to dissipate through the device housing between instances of the thermally insulating material

A housing that can be provided on the inside with a lining, made of an open-pore material and preferably covering at least two sides of the housing, for the reduction of internal explosion pressure. In addition,. or alternatively, a molded body made of the open-pore material, in particular a bonded fiber material, can be arranged in the housing. Methods are used to provide an assembly of an open-pore material and a flameproof body in order to create an assembly that has a higher temperature class and/or a higher flameproofing class than those for which the flameproof body is designed.

A charger having a heat insulating structure is provided. The charger includes: a case having one side at which an opening is formed and the other side to which a terminal portion is coupled; a printed circuit board having a front surface and a rear surface on which electronic components are mounted, respectively, and inserted into the case through the opening of the case; a heat insulating member disposed inside the case and formed to cover the electronic components mounted on the rear surface of the printed circuit board to block heat generated from the electronic components of the printed circuit board from being transferred to an entire surface of the case; and a cover closing the opening of the case.

Disclosed are a circuit board assembly and a rice cooker, where the circuit board assembly includes: a housing, including a circuit board bracket and a fireproof cover fixing and covering the circuit board bracket, where the fireproof cover and the circuit board bracket are enclosed to define a fireproof cavity; and a circuit board, mounted on the circuit board bracket and accommodated in the fireproof cavity. The present disclosure provides a fireproof cover made of a fireproof material on the circuit board. The fireproof cover and the circuit board bracket may be fixed and covered to define a fireproof cavity, and the circuit board may be accommodated in the fireproof cavity. In this way, the circuit board may be isolated from the outside, to prevent the fire from spreading when the circuit board catches fire, to ensure the safety of users' lives and property.