摘要:
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of the discharge tube on the molding core is completed, the segmented molding core is shrunk radially, and then is withdrawn from the coiled discharge tube axially.
摘要:
A fluorescent lamp comprises a discharge tube disposed substantially in a plane and shaped at least in part to define a substantial portion of the boundary of a zone in the plane. The part of the tube defining the boundary includes at least one straight portion. The discharge tube has a central axis and sealed ends provided with electrodes and at least two tube sections running substantially parallel to each other. Each tube section has at least one blind-sealed end and the tube sections are connected in series through bridges in the vicinity of the blind-sealed ends to define a single continuous discharge space to be excited by electrical power supplied to the electrodes. A lamp support housing is positioned within the zone and the ends of the discharge tube as well as the blind-sealed ends of the tube sections are re-entrant into the zone. The ends of the discharge tube are received in the lamp support housing. The lamp support housing carries means suitable for mechanically and electrically connecting to a socket and include lead-in wires connecting the electrodes directly or through an operating circuit to the means suitable for electrically connecting to a socket.
摘要:
A bulb-shaped outer envelope for accommodating at least one lamp including a light-emitting body and a control gear is disclosed. The envelope has a substantially spherical section for receiving the light-emitting body, and an elongated end section for receiving at least a part of the control gear components. The elongated end section is provided with a neck section. A substantially tubular neck-extension portion connects to an inner surface portion of and protruding from the neck section. The neck-extension portion is suitable for accommodating a remaining part of the control gear components. In a method for the manufacture of a glass outer envelope, a flare that is normally used in the manufacture of incandescent lamps is turned around by 180°, put into a skirted bulbous envelope, melted into the envelope while the skirt is detached and the flare is formed into a neck-extension portion. A self-ballasted compact fluorescent lamp with the bulb-shaped outer envelope is also disclosed. A part of the ballast components are disposed in the neck-extension portion of the outer envelope.
摘要:
An electric lamp comprises a bulb-shaped outer envelope made of a glass material with a substantially spherical portion for receiving at least a part of at least one light source and an elongated end portion for receiving at least a part of an electronic control gear for energizing the light sources. A base portion attached to the bulb-shaped envelope comprises connecting means for connecting the electronic control gear to an associated power supply. The base portion is provided with a base plate for closing the base portion and the connecting means are pin connectors embedded in the base plate of the base portion. A method of manufacturing a lamp with pin connectors is also disclosed. In this method, an outer envelope made of a glass material is connected to a base portion that has a base plate with embedded pin connectors. A lamp that comprises a bulb-shaped outer envelope made of a plastic material and has a base portion with pin connectors is also provided.
摘要:
An electrode-to-ballast interconnect is provided in combination with a fluorescent lamp including a discharge tube bent substantially in a plane. The discharge tube is shaped at least in part to define a substantial portion of the boundary of a zone in the plane. The part of the tube defining the boundary includes at least one straight portion. The discharge tube has a symmetry axis in the plane and sealed tube ends provided with electrodes, and the tube ends re-enter said zone. A base housing is laid within said zone and receives the tube ends. The base housing includes a ballast circuit which is located at least partly on a circuit board positioned substantially parallel to the plane. The electrode-to-ballast interconnect comprises electrode-in-leads which are connected to each electrode and embedded in the tube ends. Terminals are anchored in and protruding from the circuit board. The electrode-in-leads are pre-formed to a shape suitable for connecting to the terminals. Means is formed in the circuit board for urging the electrode-in-leads to the terminals during assembly. The electrode-in-leads and the terminals are joined electrically and mechanically. The base housing protrudes at most half of the outer diameter of the discharge tube from the space defined thereby.
摘要:
The present invention relates to a low-pressure discharge lamp (1) including a discharge tube (20) and a base (5) providing for mechanical and electrical connection of the discharge lamp (1). The discharge tube (20) sealed in a gas-tight manner at its both ends is bent substantially in one plane so that the discharge tube (20) has straight (2) and arc-shaped portions (3), and the base (5) connected to the ends of the discharge tube (20) includes at least cathode leads of the discharge tube (20) and electrical connectors (15) connected to said leads. At least one component ensuring mechanical connection to a lampholder is formed on the base (5). The components of the discharge lamp (1) ensuring mechanical connection to the lampholder (16) are placed in a space bordered by the discharge tube (20). A lampholder (16) of the discharge lamp (1) includes components ensuring electrical and mechanical connection to the discharge lamp (1). The components of the lampholder (16) providing for mechanical connection to the discharge lamp (1) are placed in a space bordered by the discharge tube (20) in a position in which the lampholder (16) is connected to the discharge lamp (1).
摘要:
A compact fluorescent lamp comprises a discharge tube arrangement with at least one discharge tube. The tube is formed of glass, encloses a discharge volume filled with a discharge gas and has a fluorescent phosphor coating disposed on the inner surface of the tube. The tube forms a continuous arc path and is provided with electrodes disposed at each end of the arc path. The lamp also comprises a ballast circuit connected to the electrodes by lead-in wires and to a supply voltage by lead-out wires for controlling the current in the tube. A bulb shaped outer envelope has a substantially spherical portion enclosing the tube arrangement and an elongated end portion enclosing the ballast circuit. The end portion of the outer envelope having an open end on a base side is closed and terminated by a closing means of the same material as the outer envelope. The closing means is provided with a tubular opening. The lead-out wires are isolated from each other and led through the tubular opening to a base for connecting said lamp to said supply voltage through a socket.A method for manufacturing a compact fluorescent lamp as described above is also disclosed. In the proposed method, the open end of the elongated portion of the outer envelope is closed and terminated with a closing means comprising a tubular opening for leading through the lead-out wires.
摘要:
This compact fluorescent lamp includes a discharge tube arrangement with at least one discharge tube formed of glass and enclosing a discharge volume filled with a discharge gas. A ballast circuit is connected to the electrodes disposed at each end of a continuous arc path for controlling the current in the tube. A substantially spherical portion of an outer envelope encloses the tube arrangement and an elongated end portion encloses the ballast circuit. The end portion of the outer envelope is closed and sealed by a seal formed of the same material as the material of the outer envelope.In the associated method of manufacture, the envelope is separated by cutting along a circumferential line into an upper part and a lower part, the ballast circuit introduced into the lower part and respective lead-in wires and the lead-out wires are short and need not be insulated. The ballast circuit and the discharge tube arrangement are held and supported in the outer envelope by the connecting wires and fixing means.
摘要:
There is provided a cap and socket arrangement for compact fluorescent lamps. The lamp comprises a discharge tube arrangement made of glass and having sealed ends being positioned at one end of the lamp. A continuous arc path is formed inside the discharge tube between two electrodes disposed at one end of the lamp. At least one of the sealed ends is also provided with an amalgam fill. The sealed ends of the discharge tube arrangement are received in the cap, and the cap comprises contact members and a protruding fitting member for being received in the socket. The socket has a hollow member for receiving the fitting member of the cap, and contact elements for receiving the contact members of the cap. The fitting member and the socket are provided with matching positioning elements for determining the position of the cap with respect to the socket and thereby determining the spatial position of the electrode with respect to the amalgam. The fitting member of the cap of the lamp may comprise an asymmetric groove and the socket may be provided with an asymmetric key element to be associated with the asymmetric groove of the cap.
摘要:
The invention relates to a base for compact fluorescent lamp comprising a body and a cap which are fixed to each other along an outside connection surface, a discharge tube is fixed in the cap and metal pins ensuring a releasable electrical contact are fixed in the body Electrode inleads of the discharge tube are connected to the metal pins, and a connection hollow ensuring an also releasable mechanical joint is formed in the body Extensions as elongations of the wall of the connection hollow are formed inside the base where at least one opening is formed in the extensions and some of the electrode inleads are connected to the metal pins through the opening. Another aspect of the invention is that the extensions are formed inside the base as an elongation of the wall of the connection hollow, and some of the electrode inleads are passed through between the extensions and then are connected to the metal pins.