Abstract: A lost article prevention device includes a sensor, a communication device, and a controller. The sensor is configured to detect a state inside a vehicle cabin. The communication device is configured to receive alighting point information being information of an alighting point of a passenger. The controller is configured to determine whether or not a vehicle has arrived at the alighting point on a basis of the alighting point information, and determine whether or not a lost article of the passenger is present in the vehicle cabin on a basis of a detection result of the sensor. The controller releases a closed state of a door when the vehicle is determined to have arrived at the alighting point and the lost article is determined not to be present, and maintains the closed state of the door when the vehicle is determined to have arrived at the alighting point and the lost article is determined to be present.

Abstract: An organic solid up-conversion material contains a triplet sensitizer and an organic luminescent material. The triplet sensitizer and the organic luminescent material satisfy relations of a numerical formula (Numerical Formula 1) and a numerical formula (Numerical Formula 2), and the triplet sensitizer and the organic luminescent material form a solid solution crystal. T1(M1)?T1(M2)??(Numerical Formula 1) S1(M2)>S1(M1)??(Numerical Formula 2) (S1(M1) is the lowest singlet energy of the triplet sensitizer, T1(M1) is the lowest triplet energy of the triplet sensitizer, S1(M2) is the lowest singlet energy of the organic luminescent material, and T1(M2) is the lowest triplet energy of the organic luminescent material.

Abstract: A lost article prevention device includes a sensor, a communication device, and a controller. The sensor is configured to detect a state inside a vehicle cabin. The communication device is configured to receive alighting point information being information of an alighting point of a passenger. The controller is configured to determine whether or not a vehicle has arrived at the alighting point on a basis of the alighting point information, and determine whether or not a lost article of the passenger is present in the vehicle cabin on a basis of a detection result of the sensor. The controller releases a closed state of a door when the vehicle is determined to have arrived at the alighting point and the lost article is determined not to be present, and maintains the closed state of the door when the vehicle is determined to have arrived at the alighting point and the lost article is determined to be present.

Abstract: A foam molded body has a cylindrical shape, is produced by foaming a resin, and has a mass per unit area of 0.090 g/cm2 or less and an expansion ratio of from 3.4 to 40 times. A duct for an air conditioner and a duct for a vehicle air conditioner include a foam molded body that has a cylindrical shape, is produced by foaming a resin, and has a mass per unit area of 0.090 g/cm2 and an expansion ratio of from 3.4 to 40 times.

Abstract: A foam molded body has a cylindrical shape, is produced by foaming a resin, and has a mass per unit area of 0.090 g/cm2 or less and an expansion ratio of from 3.4 to 40 times. A duct for an air conditioner and a duct for a vehicle air conditioner include a foam molded body that has a cylindrical shape, is produced by foaming a resin, and has a mass per unit area of 0.090 g/cm2 and an expansion ratio of from 3.4 to 40 times.