JPS59134553A - Fluorescent lamp - Google Patents

Abstract

PURPOSE:To secure a compact type fluorescent lamp capable of preventing the occurrence of a leak or a crack as well as making its highly efficient mass production realizable, by installing a concave part carrying a hole in the peripheral part of a cover to be sealed to the opening part of a luminous envelope, while setting electrode parts to this concave part before sealing. CONSTITUTION:Each of concave parts 16 of the same type is installed in two spots along the peripheral part of a cover 15 and in addition, this concave part 16 is provided with a hole 17. In time of lamp production, solidified electrode parts as one body in advance with a glass piece 18 are inserted through the hole 17, then the glass piece 18 is set so as to cause it to enter the concave part 16 of the cover 15, and afterward a part of the glass piece 18 is sealed to the concave part 16 by means of a glass frit 5. In case of a suchlike lamp, as an ample amount of the glass frit 5 is filled up in the concave part 16, the occurrence of a leak is extremely as small as negligible and, what is more, also any cracks in the sealing part can be prevented throughout a span of its service life. Moreover, an assembling process of the solidified electrode parts to a luminous envelope 1 is exceptionally easy whereby automation is also attainable, thus highly efficient mass production can be brought to fruition.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to compact fluorescent lamps.

Conventional configurations and their problemsAs we enter an era of energy saving, the low efficiency of the incandescent light bulbs that have been widely used in the past has become a problem. There is a demand for the development of discharge lamps.

The inventors have already proposed, in Japanese Patent Publication No. 57-37105, a new compact fluorescent lamp that can replace an incandescent light bulb and meets the above requirements.

For example, as shown in FIGS. 1a and 1b, the basic structure of this fluorescent lamp is as follows. A light-emitting container 1 is constructed by inserting a container inner body 3 made of the same material inside the body 2 and overlapping them.

The openings 4 of the container outer body 2 and the container inner body 3 are mutually
For example, they are hermetically sealed using galanufritt 5 or the like.

Further, in the inner body 3 of the container, a groove 6 for forming a discharge path is provided in a meandering manner so as to form one continuous discharge path, and two electrodes 7 and 8 are provided at both ends of the groove 6. are held by inner leads 9, 10, and outer conductors 11, 12 are connected to the inner leads 9, 10, respectively. A part or all of the inner surface of the container outer body 2 and the outer surface of the container inner body 3 are coated with a fluorescent material 13 . Further, the inside of the luminous envelope 1 is evacuated to a vacuum through an exhaust pipe 14, and surplus mercury and rare gas are sealed inside.

Next, regarding the above-mentioned basic structure, during the subsequent manufacturing process, a problem arose in which the inner body 3 of the container was damaged by atmospheric pressure, and the inventors filed a Japanese Patent Application No. 1983-1999 to prevent this problem. No. 100871, etc., proposed an improved structure. An example is shown in FIG. In the figure, a lid 15 made of a metal material is sealed with a glass frit 6 along the periphery of the opening 4 of the container outer body 2. As shown in FIG. Then, instead of the exhaust pipe 14 that was sealed to a part of the opening 4 in FIG. 1, a similar exhaust pipe 14' is installed on the lid 15.
The glass frit 5 is sealed to the center of the glass. Furthermore, unlike the structure shown in FIG.
The opening is not hermetically sealed to the opening 4 of the container outer body 2, but is merely fixed υ, and is therefore surrounded by the container outer body 2 and the container inner body 3. The space region 16 surrounded by the container inner body 3 and the lid 16 is in communication with the space region 16 surrounded by the container inner body 3 and the lid 16. Then, the container outer body 2 and the lid 1 are passed through the exhaust pipe 14'.
The entire area surrounded by 5 is evacuated to a vacuum, and a rare gas is filled in with excess mercury.

With this structure, atmospheric pressure is not applied to the container inner body 3, so damage can be completely prevented.

The inventors continued to study the commercialization of a compact fluorescent lamp based on the improved structure shown in FIG. At this stage, it was discovered that the furnace that airtightly seals the two electrodes is one of the key points in suppressing leaks and cracks, especially in the sealed area, and realizing a highly efficient mass production process. .

OBJECTS OF THE INVENTION An object of the present invention is to provide a compact fluorescent lamp that can prevent leaks and cracks and seal electrode parts with high efficiency.

Structure of the Invention The inventors have studied in detail the structure of the electrode sealing part that achieves the above object. As a result, recesses were created at two locations around the lid that corresponded to the locations where the electrode components should be sealed, and holes were then drilled in the two recesses, and the electrode components were inserted into those locations and sealed. It has become clear that it is possible to produce a compact fluorescent lamp that is free from leaks and cracks and has high mass production efficiency.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 3a and 3b show the structure of a sealed part of an electrode part of a fluorescent lamp according to an embodiment of the present invention. In this case, the lid 15 is F
It is made of a metal material having a composition of 50% e-50% Ni, and has a shape different from that shown in FIG. It takes 1i
Recesses 16 of the same shape are provided at two locations along the periphery of F15, and holes 17 are further bored in these recesses 16. In the production of lamps, an electrode component pre-integrated with a glass piece 18 as shown in FIG. 5 seals the glass piece 18 in the recess 16.

It was also confirmed that in the lamp according to the present invention, since the four parts 16 are filled with a sufficient amount of glass frit 5, the occurrence of leakage is extremely small, and cranking of the sealed part can be prevented throughout the lamp's life.

Furthermore, a major feature of this structure is that the process of assembling the electrode parts to the light emitting envelope 1 during production is extremely simple, and of course can be automated, resulting in highly efficient mass production.

Next, the specifications of a fluorescent lamp mass-produced based on the present invention and the results of its tests are shown in the table below.

As can be seen from the above table, this fluorescent lamp can obtain a luminous flux of about 9201 m with an input of 18 W, and is clearly an energy-saving lamp that can replace a light bulb. Furthermore, this lamp exhibited no leaks or cracks throughout its lifespan of over 6,000 hours, and showed high production efficiency in mass production tests.

As described in detail, the present invention provides a concave portion having a hole in the periphery of the lid that is sealed to the opening of the light emitting envelope, and sets and seals the electrode component in the concave portion. By doing so, it is possible to provide a compact fluorescent lamp which can suppress the occurrence of leaks and cracks and which can be mass-produced with high efficiency.

[Brief explanation of drawings]

Fig. 1(a) and [Y]) are a partially cutaway longitudinal cross-sectional view and a cross-sectional view taken along the same <X-X line, respectively, of a conventional compact fluorescent lamp, and Fig. 2 is a compact fluorescent lamp with an improved structure. Partially cut away vertical cross-sectional view of the lamp, Fig. 3 (ia), (b) 1.
... Luminous enclosure, 2... Outer body of the container, 3.
... Container inner body, 4 ... Opening, 5 ...
...Galanufrith, 6... Groove, 7,8.
...Electrode, 9,1o...Internal lead wire,
11, 12... External conductor, 13... Fluorescent material, 14'... Exhaust pipe, 15...
・Lid, 16... Recess, 17... Hole, 1
8... Glass pieces. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure ((L) (b) 2nd rlA

Claims (1)

[Claims] A light-emitting container is provided, in which a curved container outer body and a container inner body are overlapped, and at least a meandering groove forming a discharge path is provided in the container inner body, and the groove is provided with a meandering groove for forming a discharge path. electrodes are provided at both ends of the container, and a phosphor is further coated on a part or all of the inner surface of the outer container body or the outer surface of the inner container body,
and in a fluorescent lamp in which a rare gas and mercury are sealed inside the groove, a lid having a recessed portion having a hole is bonded to the opening of the light emitting envelope, an electrode component is set in the recessed portion, and the A fluorescent lamp characterized in that the electrode is positioned in the groove through a hole, and the electrode part is sealed in the recess.