Mounting structure for a high pressure sodium lamp

摘要

A mounting arrangement for auxiliary operating components for a high-pressure vapor discharge lamp in a standard inverted cup-shaped mounting structure for an incandescent street lamp comprises a U-shaped bracket attached by a leg of the bracket to the interior of the structure with one leg of the bracket being centrally located in an open end of the structure. A holder for the lamp is attached to the leg of the bracket located in the open end and a reflecting metallic heat shield closes the remaining portion of the open end. One of the auxiliary components is a capacitor which is attached to the other side of this leg and in the interior of the structure by a mounting strap which spaces the capacitor from contact with other components and the structure to limit transfer of heat to the capacitor. In order to further limit transfer of heat to the capacitor, the mounting strap is provided with a plurality of small indentations spaced so the indentations support the capacitor within the strap, only the outside surface of the capacitor being in contact with the bottom of the indentations.