Abstract: According to one embodiment, an illumination device, in which a plurality of light guides include a plurality of light guide pairs, each of the plurality of light guide pairs includes a first light guide and a second light guide, the plurality of light guide pairs are connected with their long sides opposed to each other, a plurality of laser light source elements include a plurality of first light source elements arranged to be opposed to a first side surface on a short side of the first light guide of the light guide pair, and a plurality of second light source elements arranged to be opposed to a second side surface of the second light guide of the light guide pair.

Abstract: The present invention provides a composite that has good initial adhesion and good adhesion after high temperature and high humidity aging. Provided is a composite including: a topping rubber composition having a fatty acid content of 0.8% by mass or less; and an adherend plated with a copper-containing layer.

Abstract: The present invention provides a composite that has good initial adhesion and good adhesion after high temperature and high humidity aging. Provided is a composite including: a topping rubber composition having a fatty acid content of 0.8% by mass or less; and an adherend plated with a copper-containing layer.

Abstract: The present invention provides a composite that has good initial adhesion and good adhesion after high temperature and high humidity aging. Provided is a composite including: a topping rubber composition having a fatty acid content of 0.8% by mass or less; and an adherend plated with a copper-containing layer.

Abstract: There is provided a steel cord including a steel wire and a plating layer that covers the steel wire and has Cu, Zn, and Co, wherein Cu and Zn are alloyed and a region covered with Co and a region not covered with Co are mixed on the outermost surface of the plating layer.

Abstract: A plurality of belt layers are laminated in a radial direction. The belt layer includes a plurality of steel cords arranged in parallel and aligned in a row, and rubber. The steel cords have a 1×4 structure in which 4 filaments are stranded. [Tensile rigidity]×[number of ends] is 10,000 N/% or greater and 20,000 N/% or less, and an interface rigidity is 2.5 MPa or higher and 5.0 MPa or lower.

Abstract: A tire includes a steel cord having a plated coating layer, rubber covering the steel cord, the plated coating layer including Cu and Zn, and a bonding layer including Cu2S and CuS provided closer to the rubber than an interface between the steel cord and the rubber, wherein a molar ratio Cu2S/CuS of Cu2S and CuS included in the bonding layer is 1.0 or higher.

Abstract: A tire having a rubber body in which a steel cord is embedded, wherein a layer composed of ZnxCoyO is formed at the interface between the steel cord and the rubber body and x+y is 5/6 or more and 1 or less.

Abstract: A tire that includes a band and a belt, the band is layered outward of the belt in a radial direction of the tire, the belt includes two or more layers layered in the radial direction of the tire, the band includes a rubber composition and a polyester cord, each of the two or more layers of the belt includes a rubber composition and a cord, and a gauge between the cords of two adjacent layers is not greater than 0.40 mm.

Abstract: Provided is a tire that is lightweight and excellent in riding characteristics while suppressing an increase in cost. A plurality of belt layers 7 are superimposed in a radial direction. The belt layers 7 include a plurality of steel cords 10 arranged in parallel in a row and rubber 11. The steel cords 10 have a 1×4 structure in which four filaments 20 are twisted, and when a center-to-center distance between the steel cords 10 in at least two of the belt layers 7 adjacent in the radial direction is T, and an average diameter of virtual circumscribed circles of the steel cords 10 having the 1×4 structure is D, 1.25?T/D?2.25.

Abstract: A tire having a rubber body in which a steel cord is embedded, wherein a layer composed of ZnxCoyO is formed at the interface between the steel cord and the rubber body and x+y is 5/6 or more and 1 or less.

Abstract: The present invention provides a composite that has good initial adhesion and good adhesion after high temperature and high humidity aging. Provided is a composite including: a topping rubber composition having a fatty acid content of 0.8% by mass or less; and an adherend plated with a copper-containing layer.

Abstract: Provided are a rubber composition that shows a balanced improvement in fuel economy, abrasion resistance, and wet grip performance while having good processability, and a pneumatic tire including a tread formed from the rubber composition. The present invention relates to a rubber composition containing: a copolymer synthesized by copolymerization of a conjugated diene monomer and a compound represented by the formula (1) below; and carbon black and/or silica, wherein R11 and R12 are the same as or different from each other and each represent a hydrogen atom or a C1-C30 hydrocarbon group.

Abstract: There is provided a steel cord including a steel wire and a plating layer that covers the steel wire and has Cu, Zn, and Co, wherein Cu and Zn are alloyed and a region covered with Co and a region not covered with Co are mixed on the outermost surface of the plating layer.

Abstract: A cord-rubber composite 11 comprises a cord array 12 of parallel steel cords 14, and an unvulcanized topping rubber 13 coating the cord array 12 and having a complex elastic modulus E* of not less than 5 MPa after vulcanization. The code array has a surface area parameter S (mm) of not less than 60 mm. The surface area parameter s (mm) is defined by the following expression: S=D×Pi×E, wherein E is a cord count of the steel cords 14 per 5 cm width of the cord-rubber composite 11 in a direction orthogonal to longitudinal directions of the steel cords, and D is an average outer diameter (mm) of the steel cords per the 5 cm width.

Abstract: Provided are a rubber composition that shows a balanced improvement in fuel economy, abrasion resistance, and wet grip performance while having good processability, and a pneumatic tire including a tread formed from the rubber composition. The present invention relates to a rubber composition containing: a copolymer synthesized by copolymerization of a conjugated diene monomer and a compound represented by the formula (1) below; and carbon black and/or silica, wherein R11 and R12 are the same as or different from each other and each represent a hydrogen atom or a C1-C30 hydrocarbon group.

Abstract: Provided are pneumatic tires having good processability and achieving a balanced improvement in wet-grip performance, fuel economy, abrasion resistance, flex fatigue resistance, and durability. The invention relates to a pneumatic tire including at least one selected from the group consisting of a tread, a sidewall, and a tire internal component, the at least one being formed from a rubber composition containing carbon black, silica, and an emulsion-polymerized rubber that has an acetone extractable content of at most 2.5% by mass when determined by an acetone extraction method; or a pneumatic tire including at least one selected from the group consisting of a tread, a sidewall, and a tire internal component, the at least one being formed from a rubber composition containing carbon black, silica, and an emulsion-polymerized rubber that has a soap content of at most 2.5% by mass and an organic acid content of at most 2.5% by mass.

Abstract: Provided is a pneumatic tire including an inner liner on a tire inner side of a carcass ply laid between a pair of bead parts, the inner liner having a first layer made of a first polymer composition, the first polymer composition containing not less than 0.5 parts by mass and not more than 70 parts by mass of at least one selected from the group consisting of liquid polyisoprene, a maleic anhydride adduct of liquid polyisoprene, and a maleic acid monomethyl ester adduct of liquid polyisoprene, relative to 100 parts by mass of a styrene-isobutylene-styrene triblock copolymer.

Abstract: A speaker includes a vibration board and at least one illuminant. The vibration board is made of translucent resin, and provided with light diffusing patterns on at least one side thereof. The illuminant is disposed behind the vibration board in a circular manner.