Abstract: The present invention relates to a light source device including discharge tubes that emit light by discharging in a thin atmosphere, a method of producing the light source device, and a display apparatus in which the light source device is employed. This light source device includes discharge tubes and a heat conductive member that is brought into contact with the neighboring area of the electrodes of the discharge tubes so as to locally cool down the neighboring area of the electrodes. In the light source device, a low heat conductivity member having lower heat conductivity than the heat conductive member is interposed between the heat conductive member and the discharge tubes. With such a structure, the luminance in the entire light source device can be increased and made uniform, and the reliability of the light source device can be increased accordingly.

Abstract: A lighting apparatus for causing the light from a light source to enter the incident surface of a light guide plate and to project the light toward an object of illumination from the exit surface of the light guide plate extending in the direction perpendicular to the incident surface. The light source is made by placing a light-emitting diode on or near the light source rod extending in the longitudinal direction parallel to the incident surface of the light guide plate. The light source rod and the light guide plate are integrally made by forming a slot in a common plate.

Abstract: A box-shaped plastic housing of integrally molded resin comprises a flat-shaped bottom wall having a peripheral edge and an upright wall extending upwardly from the peripheral edge of the bottom wall. The bottom wall and the upright wall cooperatively define an integral box-shaped molded product. The thickness of the bottom wall is in the range of two-thirds to one-third with respect to the thickness of the upright wall. The bottom wall is provided with at least one rib on its inner surface. The housing is produced by an injection molding process using a mold having a mold cavity which is provided with a groove on the inner surface of the cavity corresponding to each rib.