Patent ID: 8006738

Claim:
A window up-and-down-winding-type shielding apparatus for a conveyance that has a shielding member movable in an up-and-down direction for forming a shading screen at a window part of the conveyance and that causes the shielding member to be moved in the up-and-down direction to adjust a shading range of the window part, the window up-and-down-winding-type shielding apparatus comprising: a pair of guide rails that are provided at both sides of the window part of the conveyance and that extends in the up-and-down direction so as to be parallel to each other; a moving member that is supported by the guide rails along the guide rails so as to be movable in the up-and-down direction and that is connected to a lower end of the shielding member; a winding mechanism that has a rotation section for retractably winding the shielding member at an upper end of the guide rails; a biasing force application means that applies a biasing force to the rotation section of the winding mechanism in a direction along which the shielding member is wound; a motion conversion mechanism that converts the movement of the moving member in the up-and-down direction along the guide rails to a rotational motion; and a two-direction clutch that includes an axis member and that is capable of switching between a free rotation direction where rotation of the axis member in one direction is allowed and a limited rotation direction where the rotation of the axis member in other direction is limited, wherein the two-direction clutch is attached to the moving member and the axis member included in the two-direction clutch is coordinated with the motion conversation mechanism to have a rotational motion in the accordance with the up-and-down movement of the moving member.