Abstract: The present invention provides a functional film including a copolymer that contains a repeating unit represented by Formula (I) and a repeating unit represented by Formula (II) shown in the description, or a crosslinked reaction product derived from the copolymer; a polarizing plate having this functional film; and a display device.

Abstract: Provided is a water barrier panel device which includes a control member controlling a water barrier panel. The water barrier panel device includes a water barrier panel which blocks passage of water, a water collection pit which is configured to permit inflow of water, a water collection bucket which is moved in a vertical direction based on an amount of accumulated water, an interlocking mechanism which interlocks the water barrier panel and the water collection bucket, and a control member which controls movement of the water barrier panel.

Abstract: Provided is a water blocking board apparatus which can improve reliability of the operation of a water blocking board, the apparatus having: a water blocking board configured to ascend from a road surface to block water; a water blocking board accommodating pit formed under the road surface so as to accommodate the board; a water collecting pit configured to let water to flow thereinto upon flooding; a water collecting bucket which accumulates water having flown into the water collecting pit and is configured to descend in the water collecting pit by the weight of the accumulated water; and a transmission mechanism which connects the board and the bucket and converts a descending force of the bucket into an ascending force of the board, at least one of the mechanism and the bucket being provided with a device for inhibiting inclination of the bucket.

Abstract: Provided is a water blocking board apparatus which can improve reliability of the operation of a water blocking board, the apparatus having: a water blocking board configured to ascend from a road surface to block water; a water blocking board accommodating pit formed under the road surface so as to accommodate the board; a water collecting pit configured to let water to flow thereinto upon flooding; a water collecting bucket which accumulates water having flown into the water collecting pit and is configured to descend in the water collecting pit by the weight of the accumulated water; and a transmission mechanism which connects the board and the bucket and converts a descending force of the bucket into an ascending force of the board, at least one of the mechanism and the bucket being provided with a device for inhibiting inclination of the bucket.