Patent ID: 6633112
Filing Date: 2003-10-14
Classification: H01K

Abstract:
A filament array for an incandescent lamp comprising:at least five filament sections having their longitudinal axes parallel with one another and, when viewed in plan, being arranged substantially symmetrically in a polygonal configuration around the lamp axis; the filament sections being wound from a single wire and being electrically connected together in series by means of linking sections of said wire extending between corresponding ends of the filament sections, with alternate linking sections being positioned at opposite ends of the filament sections; the linking sections at ends of the array being supported by a set of support members extending from respective frame members; with electrical input and output of the array being through terminal wire sections on opposite or substantially opposite sides of the array; and the linking sections being configured such that said set of support members at each end of the array are substantially collinear, and said frame members each comprise a single straight member; the support members support the linking members substantially midway between filament sections, and the lines of support members at opposite ends of the filament array are inclined at an angle to one another; the frame members are aligned parallel with their respective support members so as to be inclined to one another at the same angle as the angle between the support members.