| 摘要 |
PURPOSE:To reduce oppressive sensation on a user and also temperature increase of a lighting unit by arranging a lighting fixture such that chassis at its upper face overlaps a base at its edge portion and a remaining wide chassis portion is protruded outside of the base and providing a chassis portion apart from the edge portion of the base with the lighting unit. CONSTITUTION:A lighting fixture 26 is arranged in such a way that a portion of its chassis 27 overlaps an edge portion of a base 23 and a remaining chassis portion wider than the portion is protruded outside of the base 23, each being supported by the edge portion of the base 23. A lighting unit 31 is situated so as to thermally touch the inner face of the chassis 27 so that the longitudinal direction is set along the direction orthogonal to a line B-B which is a bisector of the edge portion of the base 23 and its center is matched with the center of the lighting fixture 26. Therefore, the base 23 and a fitting plate are made small. Further, heat produced by the lighting unit 31 is easily transferred to a portion of the chassis 27 protruded outside of the base 23 and is transmitted quickly. Accordingly, oppressive sensation on a user is lessened and temperature increase of the lighting unit 31 is restricted. |
