JPH05208852A - Method for joining and container therefor - Google Patents

Abstract

PURPOSE:To prevent parts other than a joining part from deteriorating due to heating by selectively heating only the joining part and carrying out the joining. CONSTITUTION:The tip of an opening which is a joining end in-a valve body (12a) of a fluorescent lamp 11 is covered with a lid part (21b) through a metal- frit glass 17, which is then irradiated with radiofrequency waves from a radiofrequency induction heating coil 18 to generate heat in a metal (17b) by radiofrequency induction heating. A frit glass (17a) around the metal is melted to fuse the lid part (12b) to the valve body (12a).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method and a container suitable for manufacturing a bulb or the like made of ceramic or glass for fluorescent lamps, etc. And regarding containers.

[0002]

2. Description of the Related Art Generally, there is a fluorescent lamp constructed as shown in FIG. In this fluorescent lamp 1, a pair of electrodes 3a and 3b and a partition wall 4 that regulates a discharge path between the electrodes 3a and 3b are erected on an inner bottom portion of a bulb 2 which is a closed container made of glass or the like. . Further, the bulb 2 has a phosphor film 5 deposited on the inner peripheral surface of the upper portion thereof.
A proper amount of mercury and a rare gas are sealed inside.

In the conventional manufacturing method of the fluorescent lamp 1 having such a structure, first, a pair of electrodes 3 are formed on the inner bottom of a glass main body 2a having a cylindrical shape with a bottom such as a circular shape or a rectangular shape.
While a and 3b and the partition wall 4 are provided upright, a fluorescent substance film 5 is previously attached to the inner peripheral surface of the glass lid portion 2b.

Next, as shown in FIG. 4, the frit glass 6 is applied on the open end of the valve body 2a and the lid portion 2b is placed thereon, and the lid portion 2b is placed in the heating furnace 7 and kept at, for example, about 500.degree. Heat at high temperature.

As a result, the frit glass 6 is melted, and thereafter, the lid 2b can be integrally and airtightly bonded, that is, sealed by cooling and solidifying the frit glass 6.

[0006]

However, in such a conventional manufacturing method, the entire valve 2 is heated by the heating furnace 7.
Since the heating is performed at 1, the phosphor film 5 and the emitters 8a and 8b of the electrodes 3a and 3b are thermally deteriorated, which causes a problem that the lamp characteristics are deteriorated.

Therefore, the present invention has been made in consideration of such circumstances, and an object thereof is to selectively heat only a joint portion of a closed container such as a valve to prevent thermal deterioration of a portion other than the joint portion. It is to provide a joining method and a container that can prevent the above.

[0008]

In order to solve the above-mentioned problems, the present application is constructed as follows.

The invention according to claim 1 of the present application (hereinafter, referred to as the first
Of the invention), a joining member having a metal embedded in frit glass is interposed between the joining surfaces of the members to be joined, and the joining member is irradiated with high frequency to join the joining surfaces. Characterize.

The invention according to claim 2 of the present application (hereinafter referred to as the second invention) is a bottomed cylindrical container body and a lid which is joined to the opening end of the container body and closes the opening end. And a joining member that is embedded in the frit glass and is interposed between the joining surfaces of the container body and the lid to join the two.

Furthermore, the invention according to claim 3 of the present application (hereinafter referred to as the third invention) is such that the joining member according to the first or second invention is a frit on the outer peripheral surface of the metal which generates heat by high frequency induction heating. It is characterized by being coated with glass.

[0012]

[Action]

<First Invention> A joining member is interposed between joining surfaces of members to be joined, and the joining portion is irradiated with a high frequency.

Then, the metal of the joining member generates heat by high frequency induction heating to melt the frit glass around it,
The joining surfaces are fused and the joining surfaces are integrally sealed by cooling and solidifying.

Therefore, according to the present invention, since only the joining member is selectively heated, it is possible to prevent thermal deterioration of the portion other than the joining portion.

Moreover, since the metal is embedded in the joining member, the mechanical strength of the joined portion after joining can be improved.

<Second Invention> The lid member can be easily and airtightly sealed to the container body by irradiating the joining member with a high frequency to heat the metal in the frit glass by high frequency induction heating.

<Third Invention> Since the joining member of the first or second invention can be formed by a simple method of simply coating the outer peripheral surface of the metal with frit glass, the first or second invention is provided. The effect of the invention can be achieved at a low cost, and the strength of the joint can be enhanced by the metal.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a longitudinal cross section of an essential part of an embodiment in which the first invention and the second invention of the present application are applied to a fluorescent lamp. In the figure, the fluorescent lamp 11 has a circular or rectangular bottomed shape. A pair of electrodes 13a and 13b and a partition wall 14 that regulates a discharge path between the electrodes 13a and 13b are provided upright on the inner bottom portion of the cylindrical glass-made bulb 12. Emitters 15a and 15b are applied to the outer peripheral edges of the electrodes 13a and 13b, respectively.

Further, the bulb 12 has a phosphor film 16 deposited on the inner peripheral surface of the upper portion in the figure, and an appropriate amount of mercury and rare gas is enclosed in the bulb 12.

The bulb 12 has a circular or square bottomed tubular shape, and a lid 12b is sealed on the open end of a glass valve body 12a via a metal frit glass 17 according to the third invention shown in FIG. It is composed by wearing.

Next, this joining method will be described.

The metal frit glass 17 is shown in FIG.
As shown in, metal 1 that generates heat by high frequency induction heating
The outer peripheral surface of 7a is coated with frit glass 17b.

First, the metal frit glass 17 is
As shown in FIG. 1, the upper end of the opening of the valve body 12a and the lid portion 1
It is interposed between 2b and 2b.

Next, this metal frit glass 17
Then, a high frequency is irradiated from the high frequency induction heating coil 18.
Then, the metal 17a in the metal frit glass 17
Generate heat by high-frequency induction heating, and the frit glass 17b around it melts, and the valve body 12a and the lid 12b
The joining surfaces of are fused together.

After that, the frit glass 17b is cooled and solidified, and the lid portion 12b is airtightly joined, that is, sealed to the valve body 12a.

Therefore, according to the present embodiment, only the metal frit glass 17 which is a joining member and its surroundings are heated, and the pair of electrodes 13a and 13b other than this joining portion, their emitters 15a and 15b, and the phosphor film 16 are heated. Since these are not heated, deterioration due to these heatings can be prevented.

Since the metal 17b is embedded in the metal / frit glass 17, the mechanical strength of the joint can be increased.

Further, since the heating furnace 7 (see FIG. 4) for accommodating the entire valve 12 is not required, the equipment cost can be reduced.

In the above embodiment, the plate-shaped metal 17b is used.
The case where the metal frit glass 17 is formed by coating the outer peripheral surface of the frit glass 17a has been described, but the present invention is not limited to this. For example, as shown in FIG. A plurality of fine metal particles 18a may be embedded, or a plurality of small metal pieces may be embedded. In this case, the plurality of fine metal particles 18a may be partially exposed to the outside.

Further, although the present invention has been described in the above embodiment in which the glass members are joined to each other like the glass bulb 12 of the fluorescent lamp 11, the present invention is such that the glass member, the ceramic member and the metal are appropriately combined. Alternatively, it can be applied to the case where these same members are joined together.

[0032]

As described above, according to the present invention, the joining member having the metal embedded in the frit glass is interposed between the joining surfaces of the members to be joined, and the metal is irradiated with a high frequency to perform induction heating. By heating the frit glass, the frit glass is melted and the bonding surfaces are sealed together, so only the bonding part is selectively heated and the other parts are not heated, so deterioration of other parts due to heating is prevented. In addition to being able to do, because the metal is embedded in the frit glass,
The mechanical strength of the joint can be increased.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an embodiment including the first and second inventions of the present application.

FIG. 2 is a longitudinal sectional view of an embodiment of the third invention of the present application.

FIG. 3 is a vertical cross-sectional view of another embodiment of the second invention of the present application.

FIG. 4 is a diagram showing a conventional fluorescent lamp joining process.

[Explanation of symbols]

 11 Fluorescent Lamp 12 Bulbs 13a, 13b Electrodes 14 Partition Walls 15a, 15b Emitter 16 Phosphor Film 17 Metal Frit Glass (Joining Member) 17a, 19 Metal 17b Frit Glass 18 High Frequency Heating Coil

Claims (3)

[Claims] 1. A joining member having a metal embedded in frit glass is interposed between joining surfaces of members to be joined, and the joining member is irradiated with high frequency to join the joining surfaces. And joining method. 2. A container body having a bottomed cylindrical shape, a lid portion joined to an opening end of the container body to close the opening end, and a container body and the lid portion joined by metal-burying in a frit glass. A joining method, comprising: a joining member interposed between the surfaces and joining the two. 3. The joining member according to claim 1 or 2,
A joining method or container, characterized in that the outer peripheral surface of a metal that generates heat by high-frequency induction heating is coated with frit glass.