JPS604548B2 - light bulb mount - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a light bulb, and more particularly to an improvement of an IJ-wire for a light bulb.

[Prior art]

In the prior art, steel or various steel alloys have been used as materials for light bulb leads.

A recurring problem was weakening or tempering of the copper during the glass forming process. For example, when manufacturing incandescent lamps, the lead wire and exhaust pipe are inserted into a flare, and the small diameter end of the flare is heated and pressed to form what is known as a stem.
The push-down operation of the stem softens the lead wire to such an extent that the knot wire is used to ensure reliability of the lamp, particularly against shocks.

The small disk forming and tying steps add to the manufacturing process of the lamp, increasing cost and increasing the source of production losses (rejected lamps). Various metals have been tried for keys or copper alloy leads;
Suitable ones were not seen and served.

Metals or alloys that can withstand stem pressure at high temperatures are
The resistance is too high, which adversely affects the efficiency of the lamp. Although larger diameter wires alleviate this problem somewhat, this solution introduces other problems, namely increased cost and sealing problems. OBJECTS OF THE INVENTION It is an object of the present invention to provide a mount for a light bulb that can withstand high stem pressing temperatures and has a wire lead wire of acceptable diameter and resistance characteristics.

[Structure of the Invention] The present invention includes a flare, an exhaust pipe inserted into the flare, and at least two exhaust pipes inserted into the flare.
a hanging wire, the flare being pressed and sealed at one end around the exhaust pipe and the lead wire; and at least one flare connected to one end of each of the IJ-wires; In the light bulb mount made of a heat-resistant metal filament, the IJ
- The dwyer is a light bulb mount made of dispersion-strengthened steel, characterized in that the dispersion-strengthened copper consists of high-purity copper and fine particles of achromatic aluminum oxide dispersed throughout the steel matrix.

As the above object is achieved by the present invention, the dispersion-strengthened steel wire can withstand high pressure sealing temperatures and when used as an internal lead wire, the strength of this lead wire makes it possible to connect the wire. The need is removed.

For a more complete understanding of the invention, reference is made to the accompanying drawings below.

FIG. 1 shows a completed mount according to the prior art.

The mount has a flare 1 with an exhaust pipe 12 and lead wires 13, 14 inserted into the flare. As known to those skilled in the art, each lead 13,
14 consists of three segments of conductive material.
Specifically, each lead wire is generally a short dull wire (
It has an outer conductor connected to an inner conductor via an iron-nickel alloy (copper coated wire). This damaged wire is placed on the pressing part to seal between the inside and outside of the glass envelope of the lamp. As shown in Figure 1, the upper part of the stem is
Inserted into the glass outer envelope.

Therefore, the portions of the lead wires 13, 14 extending upward from the pressing portion 15 constitute internal lead wires, while the portions of the lead wires 13, 14 extending downward from the pressing portion 15 constitute external lead wires. Each end of the internal lead wire is a heat-resistant filament 1, typically made of tungsten.
6 at each end.

Surrounding the central portion of the filament 16 is a support line 17. Surrounding the lead wires 13 and 14, respectively, are connecting wires 18 and 19, and the other ends of these wires are
Glass 4 disk 20' formed at the end of the exhaust stem
This is embedded. According to the prior art of low wattage gas-filled incandescent lamps, the leads 13, 14 are generally made of nickel-coated copper or a copper alloy. According to the invention shown in FIG. 2, the internal or external leads are made of dispersion strengthened steel.
It consists of what are known as copper lines. Dispersion strengthening of metals is known in the art, in particular dispersion strengthened steel wire is known in the art and is available from SCM-Corporati
on's GIiddenMetals Division
The same material is also available as "GIidCOP" AL-20 from GTESylvania, lm. From DSC20
Available as 0. This line may be used for either internal or external lead wires. For example, a 10 mil diameter wire may be used as the inner lead wire, and an 18 mil diameter wire may be used as the outer lead wire. As is known to those skilled in the art, at least the outer surface of the inner lead has a nickel coating to eliminate contamination within the lamp due to contaminant radiation from the copper surface during lamp operation. The above dispersion strengthened copper wire is
It has been discovered that the flame used to soften flares and exhaust pipes prior to pressing does not soften or anneal them.

As a result, the lead wires in the finished mount are, according to the invention, more rigid than hitherto, so that there is no need to provide tie wires 18, 19 or even central support wire 17. Therefore, the completed mount according to the present invention simply includes the flare 11, the exhaust pipe 12, and
It consists of lead wires 1, 14 and a suitable filament 16. Thus, the construction of the mount of the present invention is simplified without compromising lamp performance. The resistance and diameter of the aforementioned leads are equal to those of the prior art leads.
Furthermore, lamps according to the invention can be manufactured with high sealing temperatures. Having described the invention in detail above, it will be apparent to those skilled in the art that various modifications can be made within the spirit and scope of the invention.

For example, although the preferred embodiment has been described as an internal lead for a standard incandescent lamp, the lead of the present invention is equally applicable to small, luminous, high brightness, high wattage incandescent lamps. Embodiments of this invention are shown below.

1. A light bulb in which the light bulb is an incandescent lamp, and the dispersion-strengthened steel wire constitutes a lead wire inside the light bulb.

2. An incandescent lamp in which the internal lead wire is coated with nickel.

3. An incandescent lamp consisting of a heat-resistant filament whose ends are connected to each of the lead wires, and in which at least one overriding lead wire or at least two of the lead wires and the filament are unsupported.

4. A mount in which the filament is coated with an electron-emitting substance when used in a discharge lamp.

5. A mount in which the lead wires form inner and outer portions, and the outer portion is made of the dispersion-strengthened steel.

6. A mount in which the lead wires form inner and outer parts, and the inner part is made of the dispersion-strengthened steel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a mount for an incandescent lamp according to the prior art, and FIG. 2 shows a mount for an incandescent lamp according to the invention. 11...Flare, 12...Exhaust pipe, 1
3, 14... Lead wire, 15... Pressing part, 16... Filament. Anti-9/〃92

Claims (1)

[Claims] 1 a flare, an exhaust pipe inserted into the flare, and at least two lead wires inserted into the flare;
The flare is pressed and sealed at one end around the exhaust pipe and the lead wire, and the light bulb mount comprises at least one heat-resistant metal filament connected to one end of each of the lead wires. , wherein the lead wire is formed of dispersion-strengthened copper, the dispersion-strengthened copper comprising high-purity copper and fine particles of insoluble aluminum oxide dispersed throughout the copper matrix.