Abstract: A plurality of light emitting diode pellets arranged on a base are surrounded by a partition member and an outer frame member fixed on the base to mount an elongated lens on the opening portion thereof. A certain number of partition members are arranged between the base and the lens having recessed portions so as to partition each pellet or groups of several pellets. The upper ends of the partition members are inserted into recessed portions of the lens. Thus, when an arbitrary light emitting diode pellet is energized, light from the energized pellet does not spread to the non-light emitting pellet portions, thus clearly discriminating between the light emitting portions and non-light emitting portions.

Abstract: A headlamp unit having a high intensity discharge lamp disposed at about the focus of a parabolic reflector and an incandescent lamp disposed at about the focus of a parabolic reflector.

Abstract: A sealed beam type reflective lamp has an envelope comprising a front lens and a reflector on the inner surface of which is formed a metal reflective film, and a tungsten coil filament arranged inside the front lens. The lamp has excellent converging effect and its light beam does not spread even if the filament is brought closer to the front lens. The front lens consists of a central circular lens element and a plurality of concentric ring-shaped prism elements. The inner surfaces of these prism elements define a stepped inner surface of the front lens. An angle formed by an inner surface of the prism lens element and the central axis of the lamp is greater than that of the prism lens element situated outward thereof. The step difference of the inner surfaces of the adjacent prism lens elements is 0.6 mm or less.

Abstract: A baseless incandescent lamp assembly comprises a baseless incandescent lamp including a flattened seal section and a pair of external lead wires, a main socket body including a lamp holding chamber to contain the flattened seal section of said baseless incandescent lamp, and a pair of conductive holding members provided in the lamp holding chamber of the main socket body and holding the flattened seal section. Said external lead wires are held and electrically connected to the conductive holding members by being pressed between the conductive holding members and the inner surfaces of the lamp holding chamber.

Abstract: A socket for holding a baseless incandescent lamp to be in electrical contact with terminals of said incandescent lamp, includes a socket body having a receiving cavity with a rectangular section into which a squeezed portion of said baseless incandescent lamp is to be fitted,a pair of terminal members attached to said socket body and to be brought in electrical contact with the terminals of said incandescent lamp when the squeezed portion of said incandescent lamp is fitted in said receiving cavity, andtwo pairs of ribs formed as a unit with said socket body and protruding from a facing pair of inner side faces of the receiving cavity of said socket body so that the projected ends of said ribs may elastically engage said squeezed portion in the vicinity of an exhaust tube of the lamp, the projected ends of two among said ribs squeezing themselves between said exhaust tube and the terminals of said incandescent lamp, thereby preventing said terminals from moving toward said exhaust tube.

Abstract: A method for manufacturing a baseless incandescent lamp assembly comprises a step for molding a conductive plate material into a continuous holding member chain including a number of facing pairs of holding members on both sides of a belt-like coupling section, a holding step for causing a flattened seal section of a baseless incandescent lamp to be held between the paired holding members, a step for cutting off the paired holding members from the coupling section while keeping the flattened seal section of the baseless incandescent lamp between the holding members, and a step for inserting the holding members holding the flattened seal section of the baseless incandescent lamp therebetween into a lamp holding chamber of a main socket body, thereby fixing the holding members to said main socket body.

Abstract: A method for manufacturing a baseless incandescent lamp assembly comprises a step for holding a flattened seal section of a baseless incandescent lamp between a pair of holding members, a step for inserting the holding members into a lamp holding chamber of a main socket body while keeping the flattened seal action of the baseless incandescent lamp between the holding members, and a step for softening part of said main socket body by heating to deform the same, thereby forming caulked portions to prevent the inserted holding members from slipping out of the lamp holding chamber.

Abstract: A halogen incandescent lamp performing halogen cycle in operation, comprising a bulb formed of light-transmitting material in which gas containing halogen atoms and inert gas are enclosed, a tungsten filament with working temperature of 2,800.degree. K. or more contained in the bulb, at least a pair of lead-in wires connected to or integrally formed on both ends of the tungsten filament, respectively, and having a part sealed in the bulb, the lamp characterized in that the light-transmitting material is aluminosilicate glass having a strain point of 660.degree. C. or higher and an average thermal expansion coefficient of 41.times.10.sup.-7 to 48.times.10.sup.-7 cm/cm/.degree.C. at a temperature of 100.degree. to 300.degree. C., and that at least filament-side seal portions of the lead-in wires have a diameter of 0.2 to 0.6 mm.

Abstract: A method of manufacturing a sealed-beam type electric bulb comprises steps of inserting external lead wires of a halogen lamp having a filament inside into two through holes formed in a plastic base plate, filling said through holes with a flowable adhesive, shifting said halogen lamp so that said filament is positioned at a predetermined position, curing said adhesive to bond said external lead wires to said plastic base plate after shifting said halogen lamp thereby fixing the halogen lamp to said plastic base plate and inserting said plastic base plate with said halogen lamp mounted thereon into an opening formed at the rear end portion of a plastic reflector, and fixing said plastic base plate at the rear end of said reflector, thereby positioning said halogen lamp within said reflector.

Abstract: A sealed beam lamp is provided, comprising a lamp envelope comprised of a reflector having an open front and a lens attached to the edge of the reflector, and a halogen bulb attached to the lamp envelope so as to face the lens and having a straight filament arranged along a direction of the diameter thereof and substantially parallel with the lens and a bulb envelope whose upper end surface portion is covered with a light-shielding layer except for those side wall portions of the bulb envelope facing the ends of the straight filaments.

Abstract: A socket for electrically and mechanically connecting a baseless lamp comprises a cylindrical main body having a peripheral wall and, a bottom wall to receive said one end of said lamp, engaging segments and an insulating engaging flange protruding from the outer periphery of the peripheral wall of the main body and capable of holding a printed wiring board therebetween, a groove and slot assembly for leading out lead wires of the lamp with one end inserted in the main body from the main body through said bottom wall and fixedly holding part of said lead wires on a surface of said engaging flange which faces said engaging segments.

Abstract: A tubular incandescent lamp which comprises an elongate transparent envelope; and a plurality of small lamps linearly arranged and extending lengthwise through the envelope, each of said small lamps containing a helically coiled filament and wherein the difference between the inner diameter of the envelope and the outer diameter of the respective lamps is chosen to be 2 mm or less.