A beam welding method in a vehicular lighting device where a transparent cover is mounted on a housing so as to cover its front face is characterized in that a transparent cover and a housing each includes a joining part. A folded side-wall structure can be unfolded to start the formation of the trays, and a folded bottom panel or two-panel structure unfolds and fits snugly into the side-wall structure to stabilize the side-wall and hold the carrier erect while it is resting on a flat surface, thus to make unfolding and loading the carrier quicker and easier. By terminating the call, the call module comprising malicious code is prevented from sending itself or a copy of itself to other host computer systems thus preventing the spread of the call module.