Abstract: A lamp capable of efficiently dissipating heat generated in a semiconductor light-emitting element is provided. A lamp which emits light includes: a mounting board on which a semiconductor light-emitting element is mounted; a first housing thermally coupled with the mounting board; and a second housing including a power receiving unit which receives power for causing the semiconductor light-emitting element to emit light. The first housing is disposed closer to an illuminated area than the second housing is, and includes a first exposed surface exposed at least to the illuminated area.

Abstract: A lamp capable of efficiently dissipating heat generated in a semiconductor light-emitting element is provided. A lamp which emits light includes: a mounting board on which a semiconductor light-emitting element is mounted; a first housing thermally coupled with the mounting board; and a second housing including a power receiving unit which receives power for causing the semiconductor light-emitting element to emit light. The first housing is disposed closer to an illuminated area than the second housing is, and includes a first exposed surface exposed at least to the illuminated area.

Abstract: A fluorescent lamp has an amalgam container settled inside an exhaust pipe extending from an end portion of a bulb to which electrodes are attached at both end portions. The amalgam container contains amalgam inside and has an opening portion through which the contained amalgam cannot go out and a part for determining the position of the amalgam, wherein the opening portion is located on the side where the exhaust pipe is cut and sealed. This configuration makes it possible to prevent the amalgam from outflowing into an exhaust equipment. In addition, the mercury vapor pressure is maintained optimally, and high luminous efficiency is obtained.

Abstract: A fluorescent lamp has an amalgam container settled inside an exhaust pipe extending from an end portion of a bulb to which electrodes are attached at both end portions. The amalgam container contains amalgam inside and has an opening portion through which the contained amalgam cannot go out and a part for determining the position of the amalgam, wherein the opening portion is located on the side where the exhaust pipe is cut and sealed. This configuration makes it possible to prevent the amalgam from outflowing into an exhaust equipment. In addition, the mercury vapor pressure is maintained optimally, and high luminous efficiency is obtained.

Abstract: In a method for manufacturing a fluorescent lamp, four dual tubes that are previously manufactured are held at a distance in such a manner that the dual tubes can move horizontally. Four portions for connection are simultaneously heated, and two of the dual tubes are simultaneously moved horizontally to form bridge portions to provide tube assemblies. Furthermore, annealing after bridge connection and the connection of tube assemblies with a bridge are performed simultaneously. Thus, a compact fluorescent lamp comprising eight glass tubes that are connected with bridges to form continuous discharge paths can be obtained. According to the manufacturing method, bridge connection can be performed in a small space and with high productivity, and a fluorescent lamp having a good quality with minor variations in the quality of the bridge portions can be provided.