Abstract:
A capacitively coupled fluorescent lamp package having a capacitively coupled fluorescent lamp having cylindrical ceramic tubes is disclosed. The lamp package further includes an electronic driver or inverter circuit for driving the lamp and supply nodes for receiving a supply voltage. The inverter circuit is a conventional inverter circuit, such as, for example, current-fed push-pull, voltage-fed push-pull, active clamped Flyback, and voltage-fed half-bridge inverter circuits, used in conventional CCFLs. A ballast circuit may be connected to the inverter circuit for properly ballasting the lamp.
Abstract:
A compact fluorescent lamp in the shape of a conventional light bulb. The exterior and interior surfaces of the lamp are formed by the front and back surfaces of an envelope which defines a cavity whose surface is coated with phosphor. There is a gas discharge channel having at least two electrodes, is located within the cavity for receiving a discharge or ionizable gas. A ballast housed in the cavity is electrically connected to the two electrodes, and when connected to a screw-base, the base is in electrical contact with the ballast.
Abstract:
A warm white fluorescent lamp wherein the visual clarity index of said lamp is in a range from 121 to 145 inclusive, the correlated color temperature of its light color is in a range from 2700 K to 3150 K inclusive, and the chromaticity point of said light color is located within a chromaticity range where distance of chromaticity point from the Planckian locus on the CIE 1960 uv chromaticity diagram is not less than -0.005 and not greater than +0.005.
Abstract:
There is provided an improved fluorescent lamp comprising a tubular glass bulb, an internal electrode provided inside of said tubular glass bulb, a fluorescent layer provided on an inner surface of said tubular glass bulb, an external electrode having an opening portion and provided on an outer surface of said tubular glass bulb, and a heat radiation sheet fitly provided on said tubular glass bulb, in which a temperature rise in the glass bulb caused by heat generated by discharge at the time of lighting is inhibited by the heat radiation function of the heat radiation sheet and a reduction in the illuminance caused thereby can also be inhibited.
Abstract:
A systematic configuration of compact fluorescent lamps of different power levels determines the operating parameters for normal operation of each respective lamp in a single-type ballast.
Abstract:
Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor diameter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m or less in an amount of 5 wt % or less.
Abstract:
A high reliability, low power lamp for use in illuminating traffic signal indicators, comprising a "serpentine grid structure" comprising a first and a second overlapping neon light source. The two neon light sources are placed in close proximity to one another, thus allowing each light source to be illuminated more rapidly due to the reduced length of each tube and the interaction of each tube with the other. The physical layout of the indicator is preferably designed to enhance the operation of the neon tube by causing heat generated by the power supply to raise the temperature of the air surrounding the neon tube.
Abstract:
The invention relates to a single-ended discharge lamp having a lamp envelope comprising at least two tube legs, and a housing portion designed for mechanical and electrical connection to a lamp socket, which housing portion consists of a tube supporting part, a connection part and a screw base, which parts are linked together. Holes are made in the tube supporting part into which holes the legs of the lamp envelope are placed and the ends of the legs of the lamp envelope being inside the housing portion are fixed with a bonding material applied to the outside lamp envelope portion of the tube supporting part which portion surrounds the lamp envelope. The essential feature of the invention is that the ends of the tube legs of the lamp envelope being inside the housing portion are fixed to the tube supporting part with a bonding material being also applied to the inside portion of the tube support part, which inside portion is bordered by the tube legs.
Abstract:
A fluorescent-lighting adaptor assembly for a fluorescent lamp which has at least one light-emitting tube, a base, and electrical contacts on said base includes an electrical adaptor and a heat sink. The electrical adaptor includes an enclosure and electrical sockets configured to receive the lamp contacts on the enclosure. The enclosure defines at least two housing portions radially separated by at least one window and a ballast in at least one of the housing portions. The heat sink includes a wall surrounding the light-emitting tube, a heat coupling surface of the wall facing the light-emitting tube and configured to couple heat between the light-emitting tube and the wall, and a heat dissipation surface. The heat dissipation surface of the wall is positioned in the window between the enclosure portions and is configured to dissipate heat to the atmosphere.
Abstract:
A fluorescent lamp is disclosed containing a deposit of a dried metal hydride-containing paste. The dried metal hydride-containing paste has a decomposition temperature higher than the temperature present during normal lamp operation. At the end of the lamp life, an increase in lamp temperature decomposes the metal hydride-containing paste and releases hydrogen within the lamp. The presence of hydrogen causes the lamp to extinguish passively without significant end heating or glass cracking.