Abstract: A lamp tube coupler is that an insulation terminal seat is respectively disposed to two ends of an expansible outer cylinder. A pair of electrode coupling members is disposed to each insulation terminal seat. The electrode coupling members corresponding to each other at the two ends of the expansible outer cylinder form a conduction mode through respective springs. While using every lamp tube coupler, the coupler is disposed between the two lamp tubes. The electrode coupling members at two ends are respectively inserted into the electrode sockets of the two lamp tubes to achieve the goal of cascading at least two lamp tubes.

Abstract: A method for manufacturing a semiconductor device is provided. A semiconductor substrate is etched to form a trench, a gate electrode is buried in the trench, an etch-back process thereon is performed to form a buried gate, and an insulating layer is formed at the entire surface with the trench. Subsequently, an ion implantation process with respect to the entire surface with the insulting layer is carried out, the dose amount in ion-implanted in the insulating layer of an upper portion of the semiconductor substrate is more than that of a sidewall in the trench. Therefore, when an etch process is performed to form a contact during a subsequent procedure, the short between the buried gate and the contact may be prevented using a difference between an etch rate of the insulating layer.

Abstract: A socket (10) for a double-ended lamp has a housing (12); a compression spring (14) within the housing (12); a lamp connector (16) comprising a body (18) with a first portion (20) contained entirely within the housing (12) and a second portion (22) extending beyond the housing (12) and having a given length L, the lamp connector (16) being subjected to an axial movement when a lamp is operatively positioned with the socket (10), the axial movement having a maximum distance AL that is less than the given length L.

Abstract: A coupling element (2) is proposed for the combining of at least two elongate lamps with in each case two ends. For this purpose, the coupling element (2) has a continuous receptacle area which is provided for receiving an end of each lamp. The receptacle area comprises a reflector (6) in order to reduce the luminance decrease in the region between the lamp ends. With one or a plurality of coupling elements according to the invention in conjunction with two or more elongate lamps, illumination systems having different luminous lengths can be realized in a modular manner.

Abstract: A connection portion (13) of an FFC (12) to be preliminarily arranged on a roof trim (10) is weld-fixed to cable connecting portions (25a, 26a) of a bus bar (25) and a spring terminal (26) of a room lamp (20). Simultaneously with the arrangement of the FFC (12) on a vehicle-body-panel-side portion of the roof trim, the room lamp (20) is mounted in the lamp mounting window.

Abstract: An adaptor circuit used to enable stable, flicker-free operation of T8-type fluorescent lamps in a lighting fixture which already has a standard two-lamp, series-sequence, 40 watt, rapid-start type ballast installed therein. The adaptor circuit contains an isolation transformer for controlling the voltage supplied by the ballast to the T8-type fluorescent lamps and a frequency selective impedance modifier circuit for controlling the operating current supplied by the ballast to the T8-type fluorescent lamps at preselected frequencies. In one embodiment, the frequency selective impedance modifier circuit substantially eliminates the third harmonic component of the fundamental frequency of the operating current.

Abstract: For converting a lamp with a screw-type base into a lamp with a bi-pin base, there is provided a cup-shaped adapter of electrical insulating material comprising a tubular body containing a bore that has internal threads threadedly receiving the external threads on the usual metal shell of the screw-type base. The adapter further comprises an end wall extending across the bore at one end of the tubular body and carrying two conductive pins extending through the end wall in laterally-spaced relation. First conductor within the adapter connected to one pin has a free end that engages the usual coniform end of the metal shell when the base is threaded into said bore, thereby establishing an electrical connection between the metal shell and said one pin. Second conductor connected to the other pin establishes an electrical connection between the usual eyelet of the base and the other pin when the base is threaded into said bore.

Abstract: An improved light socket for use with light bulbs of conventional design and threaded base, has a frame and a cup adapted to accept the light bulb base mounted for longitudinal motion within the frame between a first extended position and a second retracted position. Electrical contacts are provided for establishing electrical continuity with the bulb, the contacts being engaged with the bulb when the cup is in the second, retracted position and disengaged from the bulb when the cup is in the first, extended position. An engagement finger engages the bulb thread when the cup is in the retracted position to retain the bulb in the cup, and releases the bulb when the cup returns to the extended position.

Abstract: A connector for discharge electrodes of luminous gas tubes includes an insulative barrel receiving a power cable at one end for attachment to a fixed end of a resilient contact member. The opposite end of the barrel is open and threaded, to receive the crimped and headed tip of a gas tube having electrode conductors projecting therefrom. A lock element is applied to the crimped portion of the gas tube end and is axially captured thereon so that following insertion of the tube tip and lock element into the barrel open end, a cap surrounding the gas tube engages the threads of the barrel to radially and axially retain the tube tip within the barrel interior with its electrode conductors firmly biased against a displaceable end of the resilient contact member.

Abstract: An adaptor for extending tombstone style lamp sockets, as used with fluorescent lamps to permit the use of shorter lamps. The adaptors include pins which are rotated into the standard tombstone style socket and then further include contact openings in a plunger plate movable in a direction along the longitudinal axis of the fluorescent lamp to permit insertion of a fluorescent lamp without the need for rotating it into the tombstone socket.

Abstract: A wholly enclosed armature for fluorescent tubes, which is designed for outdoor use, has a transparent, cylindrically tubular cover member (18) which supports at the one end a permanent coupling housing (23) and at the opposite end supports an easily detechable end cover (22). A fluorescent tube-carrying support arrangement (24) is axially displaceably received in the cover member (18) between the coupling housing (23) and the end cover (22). The inner end of the support arrangement (24) is provided with guide members (42,43) of a first type which cooperate with guide members (47-49) of an equivalent second type on the coupling member. The support arrangement and the coupling member are provided with their respective contact members which form a current connection between the support arrangement and the coupling member and which are relatively moveable inwardly into and outwardly from engagement with each other guided by the said guide members (42,43; 47-49).