Abstract: A reflector molded of a synthetic resin for a lighting device mounted on a vehicle is provided, wherein a slit is transversely formed directly below a joint line defined by a reflective surface and an upper flat surface of the reflector with an optical axis as a center in order to minimize or eliminate the undesirable thermal deformation of the reflector when a light source is continuously turned on for a time longer than a predetermined one. Usually, the extent of transverse extension of the slit is determined with the optical axis of the reflector as a center depending on a quantity of electricity consumed by the light source, a distance between the light source and the upper flat surface and an area of the upper flat surface.

Abstract: A device for fitting a vehicle headlight with a lamp includes a flange receiving portion for receiving a bayonet flange of the lamp, three recesses formed on the flange receiving portion for receiving three outer pawls radially projecting from the bayonet flange, and a substantially circular retainer spring made of a piano wire, a stainless steel wire or the like and adapted to be fastened to the flange receiving portion by threadably tightening three screws. Three substantially U-shaped retaining portions are formed along the retainer spring in an equally spaced relationship when viewed in a circumferential direction so as to enable each outer pawl to be firmly clamped between a bottom of each recess and a corresponding retaining portion of the retaining ring. When the lamp is fitted in the headlight, it is turned to a predetermined insertion position from the initial position wherein the outer pawls are initially received in the recesses formed on the flange receiving portion.

Abstract: A headlight mounting and adjustment mechanism particularly suited for use in a motor vehicle for adjusting the direction in which the headlight is aimed includes a headlight assembly elastically yieldably supported by a headlight support at one location. A dual adjustment device is provided for effecting the up-and-down or vertical adjustment and also the left-to-right or horizontal adjustment of the headlight assembly.

Abstract: A ship's hull block consisting of a skin plate, and longitudinal and transverse members fastened thereto by tack welds, is erected in the upright position so that the flat, strength welding of the joints or intersections between the longitudinal and transverse members may be carried out.