Abstract: In one embodiment of the vehicular display system, the drawing unit operates when the vehicle speed is within a predetermined low speed area, starts an operation thereof when the vehicle speed becomes above a lower limit of the low speed area, and stops the operation thereof when the vehicle speed exceeds an upper limit of the low speed area.

Abstract: In one embodiment of the vehicular display system, the drawing unit operates when the vehicle speed is within a predetermined low speed area, starts an operation thereof when the vehicle speed becomes above a lower limit of the low speed area, and stops the operation thereof when the vehicle speed exceeds an upper limit of the low speed area.

Abstract: A carbon fiber bundle having high total fineness and extremely fine single fiber fineness is provided. The carbon fiber bundle includes continuous single fibers and satisfying the following (1) to (4): (1) a fineness of the single fiber is 0.0035-0.056 dtex; (2) a number of the single fibers in one carbon fiber bundle is 300-2500 thousand; (3) a strand strength of the carbon fiber bundle is 3000-10000 MPa; and (4) a strand elastic modulus of the carbon fiber bundle is 200-400 GPa.

Abstract: A carbon fiber manufacturing method with which high quality carbon fibers can be obtained. The carbon fiber manufacturing method includes introducing carbon fiber precursor fiber bundles that have been spread in sheet form into a flameproofing furnace, flameproofing the carbon fiber precursor fiber bundles introduced into the flameproofing furnace in a temperature range of 200° C. to 300° C., introducing the flameproofed fiber bundles obtained from the flameproofing treatment into a carbonization furnace, and carbonizing the flameproofed fiber bundles introduced into the carbonization furnace in a temperature range of 300° C. to 2500° C. The flameproofing furnace includes a heat-treatment chamber and a sealing chamber adjacent thereto and discharges air from the sealing chamber to outside of the flameproofing furnace. The space velocity (SV) (1/h) of hot air blown from the heat-treatment chamber into the sealing chamber satisfies relationship: 80?SV?400.

Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.

Abstract: Provided are carbon fibers which have a thicker single fiber fineness of the polyacrylonitrile-based precursor fiber bundles and lower production costs, and which have excellent mechanical properties. Also provided are: carbon fiber bundles having a single fiber fineness of 0.8-2.1 dtex, a strand strength of 4.9 GPa or greater, and a strand elastic modulus of 200 GPa or greater; carbon fiber bundles having a single fiber fineness of 0.8-2.5 dtex, a strand strength of 3.0 GPa or greater, and a strand elastic modulus of 240 GPa or greater; and an optimal method for producing said carbon fiber bundles. carbon fiber bundles having a single fiber fineness of 0.8-2.5 dtex, a strand strength of 3.0 GPa or greater, and a strand elastic modulus of 240 GPa or greater; and an optimal method for producing said carbon fiber bundles.

Abstract: An object of the present invention is to provide an oil agent composition which can improve the reduction in operability occurring when an oil agent composition containing a silicone compound is used as the main component and the reduction in the physical properties of the carbon fiber bundle occurring when a non-silicone-based oil agent composition is used. The oil agent composition for acrylic precursor fibers for carbon fibers of the present invention contains 1 to 10 wt % of a modified polydimethylsiloxane including a unit having a specific alkyl chain, at least one unit selected from the group consisting of a unit having a specific polyethylene oxide chain, a unit having a specific polyglycerin chain, and a unit having a specific polyether chain, and optionally a unit having a specific polydimethylsiloxyalkyl chain.

Abstract: The present invention provides: a carbon fiber sizing agent that can obtain a carbon fiber bundle having a superior effect of improving mechanical properties when composited using a resin; an aqueous dispersion thereof; a carbon fiber bundle; a sheet-shaped article having a carbon fiber bundle; and a composite material. The carbon fiber sizing agent contains: a compound (A) that is an ester of an unsaturated monobasic acid and an epoxy compound having a plurality of epoxy groups in the molecule, and that has at least one epoxy group in the molecule; a urethane acrylate oligomer (B) that is bifunctional and that has a tensile elongation rate of the cured product of at least 40%; and a polyurethane resin (C) having a tensile elongation rate of a dried coating film of 350-900% inclusive. The amounts of A-C contained satisfy the conditions described in the description. The aqueous dispersion disperses the sizing agent. The carbon fiber bundle contains 0.6-3.0 mass % inclusive of the sizing agent.

Abstract: A vehicular rear panel having a new configuration is provided. The vehicular rear panel according to an aspect of the present disclosure is made of a resin material and disposed on the rear vehicle body part. The vehicular rear panel includes: a light source which is at least partially disposed in the inside of the vehicular rear panel, a circuit which is at least partially provided in the vehicular rear panel to supply electric power to the light source, and a light emitting unit configured to emit light source light to the rear of the vehicle.

Abstract: The present invention relates to a carbon fiber bundle to which an amino group-containing modified polyolefin resin has applied, wherein the amount of applying amino group-containing modified polyolefin resin is 0.2 to 5.0% by mass. This carbon fiber bundle can be produced by applying 0.2 to 5.0% by mass of the amino group-containing modified polyolefin resin to the surface of the carbon fiber bundle. The present invention can exhibit excellent interface adhesion to a polyolefin resin, particularly to a polypropylene resin, and can provide a carbon fiber bundle useful for reinforcing the polyolefin resin and a method of producing the same.

Abstract: A method to prepare a carbon fiber bundle which can develop satisfactory interfacial adhesion to polyolefin-based resins, especially polypropylene resins, is provided. The carbon fiber bundle comprises a plurality of single fibers sized with a sizing agent comprising: a polymer having a main chain formed of carbon-carbon bonds, containing an acid group in at least part of side chains or at least a part of main chain ends, and having an acid value of 23 to 120 mg KOH/g as measured in accordance with ASTM D1386; or a polymer having a main chain formed of carbon-carbon bonds and containing at least either of an epoxy group and an ester group in at least a part of side chains or at least a part of main chain ends.

Abstract: A discharge lamp lighting device includes a discharge lamp, a circuit module configured to supply a voltage to the discharge lamp so as to turn on the discharge lamp, a case member configured to accommodate the circuit module, and a connecting member, in which the discharge lamp is mounted, configured to connect the discharge lamp to the circuit module. The circuit module includes a substrate. The connecting member is integrated with the substrate of the circuit module.

Abstract: Provided is a carbon fiber bundle for obtaining a fiber-reinforced plastic having high mechanical characteristics. An acrylonitrile swollen fiber for a carbon fiber having openings of 10 nm or more in width in the circumference direction of the swollen fiber at a ratio in the range of 0.3 openings/?m2 or more and 2 openings/?m2 or less on the surface of the swollen fiber, and the swollen fiber is not treated with a finishing oil agent. A precursor fiber obtained by treating the swollen fiber with a silicone-based finishing oil agent has a silicon content of 1700 ppm or more and 5000 ppm or less, and the silicon content is 50 ppm or more and 300 ppm or less after the finishing oil agent is washed away with methyl ethyl ketone by using a Soxhlet extraction apparatus for 8 hours. The fiber is preferably an acrylonitrile copolymer containing acrylonitrile in an amount of 96.0 mass % or more and 99.7 mass % or less and an unsaturated hydrocarbon having at least one carboxyl group or ester group in an amount of 0.

Abstract: Provided is a carbon fiber bundle for obtaining a fiber-reinforced resin having high mechanical characteristics. A carbon fiber bundle formed of single carbon fibers, each of which has no uneven surface structure of 0.6 ?m or more in length extending in the longitudinal direction of the single fiber; which has an uneven structure having a difference in height (Rp?v) of 5 to 25 nm between the highest portion and the lowest portion of the surface of the single fiber and having an average roughness Ra of 2 to 6 nm; and which has a ratio of the major axis to the minor axis (major axis/minor axis) of a cross-section of the single fiber of 1.00 to 1.01, wherein a mass of the single fiber per unit length falls within the range of 0.030 to 0.042 mg/m; a strand strength is 5900 MPa or more; a strand elastic modulus measured by the ASTM method is 250 to 380 GPa; and a knot tenacity is 900 N/mm2 or more.

Abstract: A pressure vessel includes a vessel body and a fiber reinforced plastic layer formed on the surface of the vessel body, wherein the fiber reinforced plastic layer include fiber reinforced plastic in which reinforcing fibers are impregnated with plastic, a strand elastic modulus of the reinforcing fiber is 305 GPa or higher, and a tensile elongation of the reinforcing fiber is 1.45 to 1.70%. A carbon fiber for a pressure vessel has a strand elastic modulus of 305 GPa or higher and a tensile elongation of 1.45 to 1.70%.

Abstract: An object of the present invention is to provide an oil agent composition which can improve the reduction in operability occurring when an oil agent composition containing a silicone compound is used as the main component and the reduction in the physical properties of the carbon fiber bundle occurring when a non-silicone-based oil agent composition is used. The oil agent composition for acrylic precursor fibers for carbon fibers of the present invention contains 1 to 10 wt % of a modified polydimethylsiloxane including a unit having a specific alkyl chain, at least one unit selected from the group consisting of a unit having a specific polyethylene oxide chain, a unit having a specific polyglycerin chain, and a unit having a specific polyether chain, and optionally a unit having a specific polydimethylsiloxyalkyl chain.

Abstract: A method to prepare a carbon fiber bundle which can develop satisfactory interfacial adhesion to polyolefin-based resins, especially polypropylene resins, is provided. The carbon fiber bundle comprises a plurality of single fibers sized with a sizing agent comprising: a polymer having a main chain formed of carbon-carbon bonds, containing an acid group in at least part of side chains or at least a part of main chain ends, and having an acid value of 23 to 120 mg KOH/g as measured in accordance with ASTM D1386; or a polymer having a main chain formed of carbon-carbon bonds and containing at least either of an epoxy group and an ester group in at least a part of side chains or at least a part of main chain ends.

Abstract: A thermoplastic resin composition, suitable for producing a molded article (carbon fiber reinforced composite molded article) is provided. Such a molded article has excellent mechanical properties, and is also superior in terms of production efficiency and economic cost, and is thus suitable for automotive parts, housing parts of a portable electric appliances, housing parts of common home electric appliances and the like.

Abstract: A discharge lamp lighting unit and vehicle headlamp are provided. The discharge lamp lighting unit includes a case body comprising a fitting portion and a projection portion, the fitting portion and the projection portion arranged in an L-shaped configuration, the discharge lamp being connected to the discharge lamp lighting unit at the fitting portion of the case body, and the projection portion projecting in the emergent light direction alongside of the discharge lamp; and a plurality of lighting circuit components, at least one of which is arranged in the projection portion. The vehicle headlamp includes a lamp unit which includes a discharge lamp which emits light, a reflector which reflects the light from the discharge lamp in an emergent light direction, and a holding projection which is provided at an end of the reflector at which the discharge lamp is mounted; and the discharge lamp lighting unit.

Abstract: A sizing agent for carbon fiber comprising either a component (A) and a component (B), or alternatively, a component (A?), a component (B?) and a component (D), each of which is described below. Component (A): an epoxy compound with at least 1 epoxy group within each molecule, and with a surface energy of 17 to 34 mJ/m2; component (B): an epoxy compound with at least 1 epoxy group within each molecule, and with a surface energy of at least 35 mJ/m2; component (A?): an epoxy compound with at least 2 epoxy groups within each molecule, and with a surface energy of 17 to 34 mJ/m2; component (B?): an epoxy compound with at least 2 epoxy groups within each molecule, and with a surface energy of at least 35 mJ/m2; and component (D): an anionic surfactant with an aryloxy group as a hydrophobic group, with an ammonium ion as a counter ion, and with an alkylene oxide addition quantity of no more than 10 moles.