Abstract: A lighting fixture assembly includes a base having a plate and a peripheral wall which has recesses defined in an inner periphery thereof. The plate has connection slots in which V-shaped clamp members are respectively received. Each clamp member has a C-shaped connection end which includes an opening and two extensions extend from two ends of the connection end at an angle. Two parts each have an insertion and a frame is connected on the insertion. Each frame is connected with light tubes thereon. Each insertion has protrusions for being engaged with the recesses and positioning rods for being slidably inserted through the connection slots and engaged with the V-shaped clamp members. The two parts can be replaced by different shapes of parts.

Abstract: A novel fluorescent lamp adaptor that safely converts an existing fluorescent lighting fixture that was designed to hold a “2D” 4-pin series fluorescent lamp to one that uses a “2C” series twin circular fluorescent lamp. The use of a type “2C” fluorescent lamp is advantageous because of its compactness, and greater efficiency, which is commensurate with a longer operational life.

Abstract: A fluorescent lamp, particularly of annular shape, with a tube-shaped disrge vessel has a base with contact pins, in which the two ends of the vessel face each other. The contact pins are essentially arranged in the annular plane of the lamp on both sides of the base. The mount belonging thereto has a U-shaped profile. The arms of the mount are provided with recesses for taking up and making contact with the contact pins of the base. This makes possible a linear motion when inserting the base into the mount. Retaining springs on the mount and recesses on the base belonging thereto make possible a locking of the base with the mount. Another advantage is the small structural height of the lamp including the mount.

Abstract: A lamp device includes a ring-shaped bulb, terminated at a prescribed annular length, each terminated portion of which is formed in a linear shape so as to make the bulb axis of one of the terminated portions coincide with that of the other terminated portion, and a base structure rotatably mounted around the opposite terminated portions of the bulb. Thus, the location of the bulb can be adjusted to a desirable position by the rotation of the bulb when the lamp device is attached to an external supporting device.

Abstract: A ring-shaped glass bulb includes a ring-shaped light permeable hollow body having opposite ends each disposed at a prescribed distance from one to the other, and a filament arranged in the hollow body of the bulb. The outer-most edge portion of the outer ring edge of one of the ends of the bulb is disposed at at least the intersecting point between an outer circumferential line extending from the outer-most edge portion of the outer ring edge of the other end of the bulb and a tangent line extending from the inner-most edge portion of the inner ring edge of the other end of the bulb. A desirable prescribed distance between the opposite ends of the bulb is equal to or greater than 30 mm.