Abstract: A cooling device includes a cylindrical body having thermal conductivity, a plurality of thermoelectric converters, and a feeder cable. The plurality of thermoelectric converters are arranged along a periphery of the cylindrical body and disposed dispersedly along an axis of the cylindrical body. The feeder cable connects two or more thermoelectric converters arranged along the periphery of the cylindrical body in series among the plurality of thermoelectric converters to form each of a plurality of sets of thermoelectric converters. And the feeder cable forms a circuit for power feeding of the each of the plurality of sets of thermoelectric converters. A voltage is applied individually to each of circuits that includes the circuit so that thermoelectric converters of the each of the circuits in the plurality of thermoelectric converters are driven.

Abstract: A roller device includes a roller, an electronic device, a slip ring, a hood member, and a duct. The electronic device is disposed in an interior of the roller. The slip ring supplies electric power to the electronic device. The hood member covers a region between a rotating shaft of the slip ring and an end portion of the roller. The duct covers the slip ring, and extends in a direction away from the roller.

Abstract: A thermoelectric conversion device for cooling an object includes a thermoelectric converter and a structure. The thermoelectric converter has a cooling surface and a heat generating surface. The cooling surface is for cooling the object. The heat generating surface is on a side opposite to the cooling surface. The structure removes heat from the heat generating surface. The structure includes a heat transfer member, a pipe through which water flows, and a heat radiation member. The heat transfer member is joined to the heat generating surface. The pipe is disposed on the heat transfer member. The heat radiation member extends inside the pipe from the heat transfer member. A kitchen unit includes a thermoelectric conversion device, a main body, and a cooling plate. The cooling plate is disposed on an upper surface of the main body, and is cooled by the thermoelectric converter.

Abstract: A sheet material cooling device includes a cylindrical body having an outer circumferential surface to be in contact with a sheet material, a cooling unit having a cooling surface in contact with an inner circumferential surface of the cylindrical body, and a first fastening member inserted from an outside of the cylindrical body toward an inside to attach the cooling unit to the cylindrical body in a state that the cooling surface is in contact with the inner circumferential surface.

Abstract: A thermoelectric conversion module includes a plurality of thermoelectric conversion elements; and a first metal substrate and a second metal substrate between which the plurality of thermoelectric conversion elements are sandwiched. The first metal substrate includes a plurality of divisional substrates. The plurality of divisional substrates are disposed with clearances left between each other.

Abstract: A thermoelectric conversion module according to the present disclosure includes a first substrate, a second substrate, and a peripheral thermoelectric conversion element group and a central thermoelectric conversion element group, each of which groups is disposed between the first substrate and the second substrate, and contains a plurality of thermoelectric conversion elements. The peripheral thermoelectric conversion element group is disposed in an area including peripheries of the first substrate and the second substrate, and the central thermoelectric conversion element group is disposed closer to a center of the first substrate and a center of the second substrate than the peripheral thermoelectric conversion element group. The plurality of thermoelectric conversion elements of the central thermoelectric conversion element group are disposed more densely than the plurality of thermoelectric conversion elements of the peripheral thermoelectric conversion element group.

Abstract: A sheet material cooling device includes a cylindrical body having an outer circumferential surface to be in contact with a sheet material, a cooling unit having a cooling surface in contact with an inner circumferential surface of the cylindrical body, and, a first fastening member inserted from an outside of the cylindrical body toward an inside to attach the cooling unit to the cylindrical body in a state that the cooling surface is in contact with the inner circumferential surface.

Abstract: A thermoelectric conversion module according to the present disclosure includes a first substrate, a second substrate, and a peripheral thermoelectric conversion element group and a central thermoelectric conversion element group, each of which groups is disposed between the first substrate and the second substrate, and contains a plurality of thermoelectric conversion elements. The peripheral thermoelectric conversion element group is disposed in an area including peripheries of the first substrate and the second substrate, and the central thermoelectric conversion element group is disposed closer to a center of the first substrate and a center of the second substrate than the peripheral thermoelectric conversion element group. The plurality of thermoelectric conversion elements of the central thermoelectric conversion element group are disposed more densely than the plurality of thermoelectric conversion elements of the peripheral thermoelectric conversion element group.

Abstract: The present invention relates to an optical component transmitting and/or reflecting light, which comprises at least two optical members and an adhesive layer bonding the optical members, said adhesive layer comprising a resin comprising a main chain having a siloxane bond as a repetition unit and a methyl group as a side chain. According to the optical component, it is possible to maintain its performance without deterioration of the adhesive layer, even when laser beams with high power are transmitted through and/or reflected by the adhesive layer.