Abstract: A vehicular ceiling interior component includes a board member that is a plate member and configured as a ceiling of a vehicular compartment, and a reinforcing member having an elongated shape and extending in an elongated direction. The reinforcing member is disposed on a vehicular exterior side surface of the board member and made of material having a linear expansion coefficient greater than a linear expansion coefficient of material of the board member. The reinforcing member includes a first fixing portion and a second fixing portion each of which is fixed to the vehicular exterior side surface of the board member and that are arranged along the elongated direction, and a connection portion that connects the first fixing portion and the second fixing portion and is away from the vehicular exterior side surface of the board member.

Abstract: A shock absorber to be mounted on a vehicular exterior side of a trim member includes a plate member having a plate surface and to be mounted on a vehicular exterior surface of the trim member such that the plate surface of the plate member is along the vehicular exterior surface of the trim member, and at least two or more shock absorbing members that are arranged on a vehicular exterior surface of the plate member to be spaced from each other along the plate surface of the plate member.

Abstract: A shock absorber to be mounted on a vehicular exterior side of a trim member includes a plate member having a plate surface and to be mounted on a vehicular exterior surface of the trim member such that the plate surface of the plate member is along the vehicular exterior surface of the trim member, and at least two or more shock absorbing members that are arranged on a vehicular exterior surface of the plate member to be spaced from each other along the plate surface of the plate member.