SUNLIGHT CONCENTRATING APPARATUS

摘要

A sunlight concentrating apparatus includes a plate-like reflecting part, with an upper reflection surface extending in an axial and a width direction, and a lower surface having a central linear region fixed to a main shaft part. A pair of bending mechanisms bend the reflection surface by moving opposite end portions in a central normal direction in accordance with a rotation of the main shaft part. The reflecting part includes a mirror plate and a support plate thereon. In the support plate, the ratio between the distance in the width direction from each end portion in the width direction and the second moment of area at this distance is constant between the end portion and the central linear region, allowing the reflection surface to be bent in an are shape.

主权项

1. A sunlight concentrating apparatus for concentrating sunlight onto a heat collecting part, comprising;
a main shaft part that is long in a predetermined axial direction; a plate-like reflecting part having an upper surface that is a reflection surface extending in said axial direction and a width direction perpendicular to said axial direction, and having a lower surface in which a central linear region that extends in said axial direction at approximately a center in said width direction is fixed to said main shaft part; a main shaft supporter for supporting said main shaft part rotatably about a central axis parallel to said axial direction; a rotating mechanism for rotating said main shaft part to tilt said reflection surface; and a pair of bending mechanisms for bending said reflection surface by moving opposite end portions in said width direction of said reflecting part in a similar manner in a central normal direction in accordance with rotation of said main shaft part, said central normal direction being a direction perpendicular to said axial direction and said width direction of said reflection surface, wherein said reflecting part has a cross-sectional shape that is perpendicular to said width direction and that changes along said width direction to bend said reflection surface in a generally arc shape.