| 摘要 |
<P>PROBLEM TO BE SOLVED: To miniaturize and thin a linear light source device capable of obtaining linear light having high luminance and little uneven luminance. <P>SOLUTION: A plurality of light emitting elements 5 are disposed along the longitudinal direction of a slender and square bar-shaped printed board 4, a reflectors 6 are disposed on both sides of each light emitting element 5 so as to alternate with each light emitting element 5, The facing surfaces 6a of both reflectors 6 are slanted so that an open area becomes larger as it goes toward the light emitting direction of each light emitting element 5, a light transmitting resin sealing material is filled in a recessed part formed by the light emitting elements 5 and the reflectors 6 to form a trapezoidal column-shaped or a trapezoidal cone-shaped resin sealing layer 10, a region from the end face adjacent to the mounting surface of the printed board 4 to the tip part of the reflector 6 is coated with a belt-like reflecting member comprising a reflection sheet 1 or the deposition film 12, and the rectangular cross section of the resin sealing layer 10 located between the tip parts of the reflectors 6 is positioned on the same surface. <P>COPYRIGHT: (C)2008,JPO&INPIT |
