TRACK INSPECTING DEVICE

PROBLEM TO BE SOLVED: To make easily drivable an illumination system, to reduce heat generation, and to make it possible to pick up a clear, good-visibility image by using an LED as the generation source of a flash. SOLUTION: An illumination module 510 is fitted to a vehicle body, and it is constituted of an LED holder 511 extended in the longitudinal direction of a rail 20 and an LED 512 serving as a luminous source. Every time an inspecting/measuring vehicle passes through a rail gap 22, a camera 31 is triggered by a trigger section 430 in response to the detection signal of a laser reception section 42, and the LED 512 is pulse-driven. A flash light is emitted from the LED 512 toward a rail top face and the rail gap 22 to brightly illuminate there. The rail top face is photographed by the camera 31 when it is illuminated. Most of disturbance light is removed by a filter 520, and a clear image is obtained based on the illumination light from the LED 512 and thereby the rail gaps 22 are selected and intermittently photographed via small electric power at ordinary temperature.