公开(公告)号：US06871974B2

公开(公告)日：2005-03-29

申请号：US10607579

申请日：2003-06-27

申请人： Takafumi Kashiwagi ,  Yasuhiro Katou

发明人： Takafumi Kashiwagi ,  Yasuhiro Katou

IPC分类号： F21V7/04 ,  F21V8/00 ,  G01D11/28 ,  G02B6/00

CPC分类号： G02B6/0018 ,  G02B6/0036 ,  G02B6/0043

摘要： A lighting unit has a light guiding plate having a plurality of corner portions each of which is formed by intersecting adjacent two side surfaces. The side surface between a pair of the corner portions of the light guiding plate forms a light incident face Non-light-emitting portions of a light source correspond to the pair of the corner portions of the light guiding plate, and at least one of the corner portions has an inclined face in contact with the light incident face, the side surface adjacent to the light incident face, and at least one of the top surface and bottom surface, and inclined by an angle θ (90°

摘要翻译： 照明单元具有导光板，该导光板具有多个角部，每个角部通过相邻的两个侧表面相交而形成。 导光板的一对角部之间的侧面形成光入射面，光源的非发光部分对应于导光板的一对角部，并且至少一个 角部具有与光入射面，邻近光入射面的侧表面以及顶表面和底表面中的至少一个倾斜角度θ（90°<180°）的倾斜面 ）相对于顶表面或底表面。