Abstract:
An adapter for providing a recessed lamp in a screw-type lampholder. This adapter has an electrical contact-making device, via which an electrical connection is produced between a screw base, which can be introduced into the screw-type lampholder, of the adapter and the recessed lamp once the recessed lamp has been introduced into the adapter. Furthermore, the adapter has a switchable electrical connecting device, via which, in the state in which there is no mechanical connection between an enveloping bulb for the recessed lamp and the adapter, an electrical connection is not produced between the screw base and the recessed lamp, and via which, in the state in which the recessed lamp is surrounded, at least in sections, by the enveloping bulb, an electrical connection is produced between the screw base and the recessed lamp. As a result, the recessed lamp in the adapter can only be operated with the enveloping bulb placed thereon.
Abstract:
A mounting board has a board, retaining members mounted on the upper surface of the board, and a part retained by the retaining members. The part is mounted such that at least a part thereof is arranged below the lower surface of the board, and that the part is electrically connected to the board through the retaining members. Such an arrangement as described above eliminates the need of connecting the discharge gap element to the board by using lead wires, and of mounting it on the upper surface of the board. This lowers the height of the board and admits an elevated part.
Abstract:
A lampholder has an outer sleeve centered on an axis and having a radially inwardly projecting lug having an axially inwardly directed end face and an inner core adapted to fit with a lamp, fittable inside the sleeve, and formed with an axially inwardly directed face axially alignable and engageable with the outer-sleeve end face on rotation of the core in the sleeve in a predetermined sense in a fully inserted position of the inner core in the sleeve. Interengageable retaining formations on the core and on the sleeve inhibit rotation of the core in the sleeve opposite to the predetermined sense when the faces are axially aligned with and engage each other.
Abstract:
A lock-in compact fluorescent lamp (CFL) adaptor that would be screwed into the socket of a conventional incandescent lamp assembly. It has an adaptor casing whose respective top wall, bottom wall and outer side walls form an electrical components chamber for a ballast, a printed circuit board, and electrical wiring. A CFL post member socket is formed in the top wall of the adaptor casing. An electrical contact base is connected to the bottom wall of the adaptor casing and it has a conventional externally threaded outer electrical contact surface that would be received into a conventional incandescent lamp socket. The adaptor has structure to prevent unauthorized removal of the compact fluorescent lamp from the adaptor. The adaptor casing also has a pair of vertically oriented slots for receiving and capturing the bottom legs of a harp used with a lamp assembly. One alternative embodiment of the adaptor has a removable electrical contact base. Another alternative embodiment has an adaptor designed to function with a compact fluorescent lamp having an inverted base structure.
Abstract:
A clamping structure of projection lamp comprises a shade assembly, a lamp cup and a clamping tongue. The shade assembly has an insulating body with two grooves on two outer walls thereof. The lamp cup has two leads connected to the shade assembly. The lamp cup has two grooves on two outer walls thereof. The clamping tongue has a resilient main body having a plurality of upper arms and lower arms on two opposite sides thereof. The upper arm has upper clamping part and the lower arm has lower clamping part. The upper clamping parts of the upper arms clamp the grooves of the shade assembly and the lower clamping parts of the lower arms clamp the grooves of the lamp cup such that the lamp cup is elastically connected to the shade assembly.
Abstract:
A lamp holder includes a base and two electrical contacts for forming a connection with a bulb having an envelope around an electrical filament having two wires extending therefrom. Each wire forms a loop protruding from the envelope, the two loops being at opposed ends of the envelope. Each electrical contact of the lamp holder has a wire with a hook at its free end and formed to engage one of the two loops of the bulb, so that a shorter one of the wires engages the one of said two loops at the nearer end of the bulb and the other larger spring wire engages the other of said two loops at the far end of the bulb, in a manner that induces a spring tension in the wire. Thus, the bulb is held suspended between, and in electrical contact with, the two loops.
Abstract:
A festoon lamp holder has a base provided with recesses either side of probes. A cap permanently fits to the base to provide a water-tight seal with an electrical cable passing in use through the holder. Power is provided from the cable conductors via feed-throughs for a bulb. A globe surrounds the bulb and provided with seals forms a gas-tight chanber for the bulb.
Abstract:
A bulb holder for receiving therein a bulb which has two wires extending downward from the bulb has a body and an adapter connected to the body and having two engaging legs extending downward from a bottom of the adapter to the body for electrical connection with the body and two compartments defined in the adapter by an insulator plate which is formed with the adapter for receiving therein a respective one of the two wires of the bulb. The insulator plate is able to avoid undesirable contact between the two wires.
Abstract:
A discharge lamp is constructed by attaching a base to an outer tube, the base has a spiral feed member and a dotted feed member, and the shortest creeping clearance distance between the spiral feed member and the dotted feed member is defined to at least 6.0 mm. A socket for discharge lamp is constructed by providing a spiral receiving member and a contact piece in an insulating socket body, and the shortest clearance distance between the spiral receiving member and the contact piece is defined to at least 5.0 mm. A socket for discharge lamp is constructed by providing a spiral receiving member and a contact piece in an insulating socket body, and the shortest clearance distance between a socket reference line and the contact piece is defined to at least 19.6 mm.
Abstract:
A halogen lampholder includes a base, a locking spring, two clipping members, two sliding members, a bottom cover, an outer shell and an outer ring. The base is assembled with the locking spring, the clipping members and the sliding members and then, with the bottom cover and the outer shell orderly. The base has a vertical plugging chamber for a fitting portion and two conducting teeth of a lamp to plug in. The locking spring clamps the fitting portion of the lamp. The clipping members connect with the conducting teeth. The sliding members are placed in the base to restrain the locking spring. The bottom cover restrains the locking spring and the clipping members. The outer shell covers the bottom cover, combined with an outer ring and a power-wire tube for a power wire to pass through and reach the clipping members.