Linear light source device and planar light source device

A linear light source device which is to be arranged on a side surface of a light guiding plate to form a planar light source device, comprising:

• a wiring substrate in a rectangular shape and having a wiring pattern formed thereon;
• a plurality of light emitting elements arranged on a principal surface the wiring substrate in a longitudinal direction of the wiring substrate and connected with the wiring pattern on the wiring substrate;
• and
• a sealing resin that seals the light emitting elements,
• wherein an external connection terminal is arranged on a back surface of the wiring substrate that is opposite to the principal surface of the wiring substrate where the light emitting elements are arranged,
• wherein the external connection terminal is arranged in a central portion of the second surface in the longitudinal direction of the wiring substrate such that a first distance between a center point of the wiring substrate and the external connection terminal is less than a second distance between the center point and an edge on a width side of the wiring substrate, and
• wherein the external connection terminal is connected with the wiring pattern,
• the linear light source device further comprising a connector that is electrically connected to the external connection terminal by pushing the connector toward the external connection terminal so that a warp of the wiring substrate is modified.