Abstract:
An incandescent automotive lamp having a glass envelope with a polyetherimide sleeve attached to a press-sealed end of the glass envelope. The sleeve includes a base portion having an interior passage that permits the sleeve to be slid onto the press-sealed end. Attached to the base portion of the sleeve are a pair of opposed locking members, with each locking member having a free, cantilevered end located near the bottom side of the base portion. When the sleeve is assembled onto the press-sealed end of the glass envelope, the free end engages an associated bearing surface on the press-sealed end which inhibits the sleeve from sliding back off the glass envelope. The polyetherimide sleeve is capable of withstanding relative high temperature operation of the lamp without outgassing of the plastic, and the locking members allow secure attachment of the sleeve to the glass envelope without cracking of the polyetherimide material.
Abstract:
A lamp cap with a spring cup for retaining a lamp burner, for which it is proposed that the spring cup has at least three spring legs which each have substantially only one degree of freedom. The spring legs are arranged such that the three degrees of freedom enable a displacement possibility of the spring cup in a displacement plane and are linearly independently aligned in this displacement plane.
Abstract:
A foamable copolymer based coupling is provided for securely affixing a light emitting glass lamp in a metal base to form a lamp assembly. The copolymer is preferably selected from ethylene vinyl acetate, ethylene methyl acrylate, and combinations thereof. The foamable coupling may be placed around one end of the glass lamp or in the lamp base before the lamp and base are matingly engaged. The assembled lamp is then heated to a temperature, which causes the foamable coupling to expand and securely affix the lamp in the base.
Abstract:
This invention concerns a compact fluorescent lamp with a double helix shaped discharge tube in which the two strands of the helix are constituted by two helix shaped tube portions. These tube portions define a central axis of the discharge tube. The double helix formed by the discharge tube has a central section and a first end section. These sections are defined along the central axis, and the lamp base for receiving ends of the tube portions is disposed at the first end section. An inner diameter of the central section of the helix is larger than an inner diameter of the first end section. The invention further relates to a method and apparatus for manufacturing coiled shaped discharge tubes, in particular the above described discharge tube of the discharge lamp. A radially segmented molding core is used for manufacturing the discharge tube. Once the coiling of the discharge tube on the molding core is completed, the segmented molding core is shrunk radially, and then is withdrawn from the coiled discharge tube axially.
Abstract:
Disclosed is a halogen lamp supporting device including a base having accommodating holes into which fitting end plates of a halogen lamp are respectively fitted and slits which are defined at opposite sides of each fitting slot, and elastic supporting members each having supporting strips which are tightly fitted around an associated end of the halogen lamp and fixing levers which are integrally formed with one of the supporting strips and fitted into the slits of the base to support the halogen lamp, the accommodating holes being defined in the base at halogen lamp supporting positions, respectively, so that the fitting end plate and the elastic supporting member can be simultaneously accommodated in each accommodating hole, and the slits, into which the fixing levers are to be fitted, being defined on bottom surfaces of the accommodating holes.
Abstract:
The invention relates to an optical radiator, especially for ultraviolet or infrared radiation, with a lamp bulb socketed without cement on one end, from which at least two connecting wires are brought through pinches, one at the top and the other at the bottom of the lamp bulb, the first connecting wire being affixed at the upper end of the lamp bulb to a stiff support bow, and the lower end of the stiff support bow being brought as a terminal pin through a first bore in a lamp base and is fastened to the latter by an anti-extraction lock. The invention is addressed to the problem of offering an optical radiator which can be made quickly and at low cost from a minimal number of parts. The problem is solved in that the second connecting wire at the bottom end of the lamp bulb is carried loosely through a second bore in the lamp base.
Abstract:
The elongate bulb (1) of the lamp, which defines a longitudinal axis (A), is closed at opposite ends by sealing parts (6; 32), with in each case one cap being fitted at one end, the cap having an electrical contact element (13; 25) which is connected in an electrically conductive manner to a supply conductor (15; 21) leading to a luminous means, the contact element being accommodated in a tubular extension (11; 22) of the sealing part; the contact element (13; 25) has an attachment part (14; 24) which is directed inward toward the lamp interior and is equipped with at least two barbs (20; 26) which are in contact with the tubular extension (11; 21).
Abstract:
A lamp for an automobile includes a lamp (10) and a base portion (30) to which the lamp (10) is mounted, in which the lamp (10) includes: a bulb (20); lead wires (11) extending from a base of the bulb (20); and a pinch seal portion (22) formed in the base of the bulb (20) for fixing the lead wires (11), and the base portion (30) includes a resin adapter (40) having a pair of adapter half bodies (40A, 40B) adapted to be placed onto the pinch seal portion (22) from left and right side portions of the pinch seal portion (22) in a transverse direction and mounted on the pinch seal portion (22).
Abstract:
A lamp includes a base, light emitting diodes and a transparent covering unit. The base has a convexly curved surface. The transparent covering unit has a convexly curved surface on a first side, and several outwardly facing flat sections on an opposite second side, which is faced with the convexly curved surface of the base. The light emitting diodes are arranged on the convexly curved surface of the base to be each perpendicular to a corresponding one of the flat sections; thus, light emitted from the light emitting diodes can be refracted to focus when passing through the transparent covering unit, providing increased illumination.
Abstract:
An improvement to the usable lifetime of a lamp includes the use of a primary filament, a backup filament, and a means to switch portions of the backup filament into the current flow path after a portion of the primary filament open circuits. Using bypass shunts, which do not become electrically conductive until a portion of the primary filament open circuits, an open circuited portion of the primary filament can be electrically replaced with an associated backup filament portion to keep the lamp lit. The shunts in one embodiment are made of oxidized wire and are wrapped around the primary and backup filaments, in a spaced-apart relation, forming filament pairs consisting of a primary filament segment and its associated backup filament segment. In another embodiment, support brackets are used to not only support the primary and backup filaments, but are also used to provide the bypass shunt function as well.