LAMPHOLDER ASSEMBLY

This invention relates to a lampholder assembly for one or more fluorescent lamps having a single lamp cap. The assembly comprises at least one lampholder module, which lampholder module comprises a part for receiving the lamp (the lamp part) and a narrower part supporting the lamp part (the support part), as well as at least one ballast. According to the invention, the assembly comprises a base plate for mounting thereon the lampholder module and the ballast, a caplike member, and a cover plate. The caplike member has a top surface which, when said caplike member has been mounted, is disposed in a plane below the lamp part of the lampholder module. Said top surface has an opening provided therein, formed to have a broad portion and an adjacent narrower portion, in such a way that at least the lamp part of the lampholder module can extend through said opening when the caplike member is being mounted. Further, said opening is provided in a location such that when the cap has been mounted, the support part of the lampholder module is disposed in the narrower portion of the opening, which narrower portion itself is narrower than the lamp part of the lampholder module. The cover plate is of suitable dimensions for covering the broader portion of said opening, which broader portion, when said cap has been mounted, is disposed before the support part of the lampholder module. Finally there are provided means for attaching said cover plate, said caplike member and said base plate to each other. L'invention se rapporte à un ensemble porte-lampe pour une ou plusieurs lampes fluorescentes, qui comporte une seule douille. L'ensemble comprend au moins un module porte-lampe, lequel est composé d'une pièce destinée à recevoir la lampe (soit la boîte pour la lampe) et d'une pièce plus étroite soutenant la boîte pour la lampe (soit la pièce de support), ainsi qu'au moins un ballast. Selon la présente invention l'ensemble comprend une plaque de base sur laquelle est montée le module porte-lampe et le ballast, un élément douille ainsi qu'une plaque de couverture. L'élément douille présente une surface supérieure qui, lorsque l'élément douille est monté, se situe dans un plan au-dessous de la boîte pour la lampe du module porte-lampe. Dans cette surface supérieure est ménagée une ouverture, conçue de façon à présenter une partie large et une partie adjacente plus étroite, de sorte qu'au moins la boîte pour la lampe du module porte-lampe peut traverser cette ouverture, lorsqu