Compact single-ended incandescent lamp having improved filament mount assembly专利检索-卤素灯白炽灯光源手电筒灯光专利检索查询-专利查询网

Compact single-ended incandescent lamp having improved filament mount assembly

阅读：217发布：2023-05-11

专利汇可以提供Compact single-ended incandescent lamp having improved filament mount assembly专利检索，专利查询，专利分析的服务。并且The coiled-coil filament of a single-ended halogen type lamp is suspended in generally coaxial position within a tubular envelope by a pair of rigid lead wires of unequal length that have smooth substantially straight ends which are slip-fitted into and hot clamped to singly-coiled legs provided at each end of the coiledcoil. An end segment of the longer lead wire is bent into a transversely-extending loop which is disposed in loose nesting relationship with the top of the bulb and thus also serves as an integral mount-positioning-and-bracing means. An optional bridge and anchored auxiliary support wire for the filament provide additional shock-proof protection. The simplicity of the resulting mount structure reduces the manufacturing cost of the lamp without affecting lamp quality or performance.，下面是Compact single-ended incandescent lamp having improved filament mount assembly专利的具体信息内容。

权利要求

1. A single-ended electric incandescent lamp comprising, in combination; an elongated tubular envelope of vitreous light-transmitting material that has a press seal at one end, a pair of spaced rigid lead-in conductors of unequal length hermetically embedded in said press seal and extending into said envelope, the inner end of the shorter conductor terminating at the presssealed end of the envelope and the longer conductor being offset toward and extending longitudinally along a side wall of the envelope and terminating in a transversely-disposed loop portion the free end whereof depends laterally toward the axis of said envelope, and a coiled-coil filament of refractory metal wire and substantially linear configuration having a singly-coiled leg at each end that extends directly from the filament barrel and encloses and is electrically fastened to the free end of one of the respective lead-in conductors so that said filament is thereby suspended by said conductors in a longitudinallyextending position within said envelope, the maximum width dimension of the traverse loop portion of said longer lead-in conductor relative to the minimum inner dimension of said tubular envelope which encloses said loop portion being such that said loop portion is in loose nesting relationship with the surrounding walls of said envelope and said longer conductor thereby serves both as a current-carrying support member for said filament and as a guide-and-bracing means for the filament mount structure.

2. The incandescent electric lamp of claim 1 wherein; the laterally-extending free end of said loop portion is generally L-shaped and oriented so that its tip segment is directed toward and is in substantial alignment with the envelope axis, and the legs at both ends of said linear coiled-coil filament extend longitudinally from the filament barrel and are substantially coaxial therewith.

3. The incandescent electric lamp of claim 1 wherein; said envelope is composed of quartz and contains a halogen atmosphere, said linear coiled-coil filament is composed of tungsten and disposed in substantially coaxial relationship with said envelope, and the part of said envelope that contains said filament is of cylindrical configuration and substantially uniform in diameter throughout its length.

4. The halogen-incandescent lamp of claim 3 wherein the leg of the coiled-coil filament that is located at the press-sealed end of the envelope extends longitudinally from the filament and the leg at the opposite end of said filament extends transversely relative to the filament axis.

5. The halogen-incandescent lamp of claim 3 wherein; the portions of said lead-in conductors that are located within said envelope comprise tungsten wires the free ends whereof are substantially straight and smaller than the inside diameter of the filament legs; and the free ends of said tungsten wires are locked in place within the respective filament legs by a plurality of primary turns in each of said legs which are clamped around and tightly trip the enclosed ends of said wires.

6. The halogen-incandescent lamp of claim 3 wherein; the end of said envelope opposite said press seal is terminated by a sealed depending tip, and the transverse loop portion of the longer lead-in conductor is of substantially circular configuration and spaced from the sealed tip of the envelope so that the latter is isolated from the filament mount structure.

7. The halogen-incandescent lamp of claim 3 wherein; portions of the lead-in conductors that are located between the press seal and the proximate leg of the coiled-coil filament are anchored in a quartz bridge member and said bridge member, conductors and filament thus comprise a unitary mount assembly, and the transverse loop portion of the longer lead-in conductor is of closed configuration and conformed so that the segMent thereof immediately adjacent its laterally-extending free end overlaps and overlies the segment that is immediately adjacent to the longitudinal-extending part of said conductor and thus constitutes the beginning of said loop portion.

8. The halogen-incandescent lamp of claim 7 wherein an auxiliary support wire is anchored in said bridge member, extends therefrom to a medial secondary turn of said coiled-coil filament, and has its free end coupled to said medial secondary turn.

9. The incandescent electric lamp of claim 1 wherein; said filament is held in suspended position within the envelope solely by said pair of spaced lead-in conductors, and the offset medial portion of the longer lead-in conductor is protectively encased in a tubular member of vitreous insulating material.

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Compact single-ended incandescent lamp having improved filament mount assembly

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