Abstract: A vapor chamber includes a main body sheet having a first main body surface and a second main body surface provided on an opposite side to the first main body surface, a space provided on the first main body surface of the main body sheet, a first sheet laminated on the first main body surface of the main body sheet and covering the space, and a retracted portion retracted toward the space beyond an outer periphery of the main body sheet or an outer periphery of the first sheet in a plan view.

Abstract: A body sheet for a vapor chamber includes a first body surface, a second body surface disposed opposite to the first body surface, and a penetration space extending from the first body surface to the second body surface. The penetration space extends in a first direction in plan view. As seen in a cross section perpendicular to the first direction, the penetration space includes a first opening positioned on the first body surface and a second opening positioned on the second body surface. The second opening extends from a region overlapping with the first opening in plan view to a position overlapping with the first groove in plan view.

Abstract: A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in this space, the enclosed space including: a plurality of condensate flow paths through which a fluid that is the working fluid in a condensing state flows; and vapor flow paths through which a vapor that is the working fluid in a vaporizing state flows, wherein each of projecting parts with which each of the vapor flow paths is provided has a projecting amount varying in an extending direction of the vapor flow paths; a pitch for opening parts that allow the vapor flow paths and the condensate flow paths to communicate varies in the extending direction of the vapor flow paths; or wall parts that separate the flow paths each have a given relationship with a transverse cross section of a given flow path.

Abstract: A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in this space, the enclosed space including: a plurality of condensate flow paths through which a fluid that is the working fluid in a condensing state flows; and vapor flow paths through which a vapor that is the working fluid in a vaporizing state flows, wherein each of projecting parts with which each of the vapor flow paths is provided has a projecting amount varying in an extending direction of the vapor flow paths; a pitch for opening parts that allow the vapor flow paths and the condensate flow paths to communicate varies in the extending direction of the vapor flow paths; or wall parts that separate the flow paths each have a given relationship with a transverse cross section of a given flow path.

Abstract: A wick sheet for a vapor chamber is sandwiched between a first sheet and a second sheet of the vapor chamber that encloses a working fluid. The wick sheet for a vapor chamber includes a sheet body having a first body surface and a second body surface, a penetration space that penetrates the sheet body, a first groove assembly that is disposed on the second body surface and that communicates with the penetration space, and the second groove assembly that is disposed on the first body surface and that communicates with the penetration space. The flow channel cross-sectional area of a second mainstream groove of the second groove assembly is greater than the flow channel cross-sectional area of a first mainstream groove of the first groove assembly.

Abstract: Cover film has a base material layer and a surface layer chemically bonded to the base material layer, where the surface layer includes a polyurethane resin X1 containing urethane and urea units and a polyorganosiloxane group in the molecule, the polyurethane resin X1 is a reaction product of a non-yellowing-type isocyanate component B1 with an active hydrogen component A1 including a compound a1-1, the base material layer includes a polyurethane resin X2 having a urethane bond in the molecule, and the polyurethane resin X2 is a reaction product of a non-yellowing-type isocyanate component B2 with an active hydrogen component A2 which does not include the compound a1-1, and has a certain crosslinking point concentration and also has a certain elastic recovery rate.

Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.

Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.

Abstract: An object transfer device includes: a motor; a motor drive circuit; an encoder that detects a motor output shaft rotation angle; a drive system that transmits motion of the output shaft to an object; an origin sensor that detects arrival of a predetermined site of the drive system interlocked with the object at a predetermined position; a drive circuit-including servo amplifier that records a current position of the object based on detection by the encoder and the origin sensor, and controls the object to a target position; an absolute position holder that acquires an absolute position of the predetermined site based on detection by the encoder at least while the drive circuit is off; and a power saving controller that is bidirectionally communicable with the servo amplifier and can resume servo control with the absolute position as a current position of the predetermined site when the drive circuit is on.

Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.

Abstract: A polyimide film includes a polyimide in which a specific amount of molecular framework containing one or two silicon atoms in its main chain, wherein a total light transmittance measured in accordance with JIS K7361-1 is 85% or more; wherein a yellowness index calculated in accordance with JIS K7373-2006 is 30 or less; wherein a glass transition temperature is in a temperature range of from 150° C. to 400° C.; and wherein a tensile elastic modulus at 25° C. obtained by measuring a 15 mm×40 mm test piece at a tensile rate of 10 mm/min and a chuck distance of 20 mm in accordance with JIS K7127, is 1.8 GPa or more.

Abstract: A wick sheet for a vapor chamber includes a sheet body having a first body surface and a second body surface, a first vapor flow channel portion, a liquid flow channel portion provided on the second body surface, and the second vapor flow channel portion provided on the first body surface. The sheet body includes a land portion having the longitudinal direction being a first direction, and the first vapor flow channel portion is disposed around the land portion. The second vapor flow channel portion includes a vapor flow channel groove extending from one of side edges of the land portion to the other side edge in a second direction orthogonal to the first direction.

Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.

Abstract: Included are a plurality of first flow paths, and second flow paths arranged between adjacent ones of the first flow paths; and a layer including grooves constituting the first flow paths and the second flow paths, and a layer laminated on the insides of the grooves, and constituting inner surfaces of the first flow paths and the second flow paths.

Abstract: A motor-driven compressor includes a compression mechanism, an electric motor, an inverter, a housing, and a cover defining an accommodation chamber with the housing to accommodate the inverter. The cover includes a plate-shaped body wall and insertion holes extending through a periphery of the body wall. The body wall includes a first surface opposed to the inverter in the accommodation chamber, a second surface, a first thickness portion having a first thickness, and a second thickness portion located around at least one of the insertion holes. The second thickness portion has a second thickness that is smaller than the first thickness and is obtained by recessing the body wall from the first surface toward the second surface.

Abstract: A vapor chamber having an enclosure which a working fluid is sealed in, the enclosure including: a first flow path; and a fluid flow path part that is adjacent to the first flow path.

Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.

Abstract: A scroll compressor is provided. An orbiting angle of the orbiting scroll when the compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is completed is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with the arcuate portion of the fixed spiral wall before compression is completed is referred to as a distal end contact initiation angle. The formation point distance reaches a minimum value at least at one of a first orbiting angle or a second orbiting angle.

Abstract: A wick sheet for a vapor chamber is sandwiched between a first sheet and a second sheet of the vapor chamber that encloses a working fluid. The wick sheet for a vapor chamber includes a sheet body having a first body surface and a second body surface, a penetration space that penetrates the sheet body, a first groove assembly that is disposed on the second body surface and that communicates with the penetration space, and the second groove assembly that is disposed on the first body surface and that communicates with the penetration space. The flow channel cross-sectional area of a second mainstream groove of the second groove assembly is greater than the flow channel cross-sectional area of a first mainstream groove of the first groove assembly.

Abstract: A first header tank and a second header tank of a cold-storage heat exchanger are located away from each other. Refrigerant tubes include refrigerant passages through which the first header tank and the second header tank communicate with each other. The refrigerant tubes are spaced away from each other. Cold energy containers storing cold energy storage members are provided to close air passage portions defined between the refrigerant pipes. A region including the air passage portions are separated into a first region including a center part of the region and a second region that is remaining part of the region. A proportion of the cold energy containers in the second region is larger than that in the first region.