JPH0447947B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD OF THE INVENTION The present invention relates to compact fluorescent lamps. Conventional configurations and their problems In the era of energy conservation, the low efficiency of conventionally widely used incandescent light bulbs has become a problem, and recently there has been a demand for the development of high-efficiency compact discharge lamps that can replace incandescent light bulbs. ing. The inventors have already proposed, in Japanese Patent Publication No. 57-37105 and other documents, a new compact fluorescent lamp that meets the above requirements and can replace the heat-generating light bulb. As shown in FIGS. 1a and 1b, the basic structure of this fluorescent lamp is, for example, as shown in FIGS. 1a and 1b. The light-emitting container 1 is constructed by inserting the container inner body 3 made of the same material into the inside of the container and overlapping each other. The openings 4 of the container outer body 2 and the container inner body 3 are hermetically sealed to each other, for example by a glass frit 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 grooves are provided at both ends of the groove 6.
Two electrodes 7 and 8 are held by inner lead wires 9 and 10, and outer conductors 11 and 12 are connected to the inner lead wires 9 and 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 occurred in which the container inner body 3 was damaged by atmospheric pressure, and the inventors filed a patent application to prevent this problem. 57-100871, etc., we proposed an improved structure. An example is shown in Figure 2. In the figure, a lid 15 made of a metal material is placed along the periphery of the opening 4 of the container outer body 2.
are sealed by glass frit 5. In place of the exhaust pipe 14 sealed to a part of the opening 4 in FIG. 1, a similar exhaust pipe 14' is sealed to the center of the lid 15 with the same glass frit 5. Furthermore, unlike the structure shown in FIG. 1, the opening of the container inner body 3 is not hermetically sealed to the opening 4 of the container outer body 2, but is merely fixed. Therefore, the area surrounded by the container outer body 2 and the container inner body 3, the container inner body 3 and the lid 1
A spatial region 16 surrounded by 5 is in communication. Then, the entire area surrounded by the container outer body 2 and the lid 15 is evacuated through the exhaust pipe 14', and the rare gas is sealed together 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 how to airtightly seal the two electrodes was one of the key points in suppressing leaks and cracks, especially at the bonding part, 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 to achieve the above object. the result,
Leakage can be prevented by creating recesses at two locations around the lid that correspond to the areas where the electrode components should be sealed, and by drilling holes in these recesses and inserting and attaching the electrode components into these recesses. It has become clear that it is possible to realize a compact fluorescent lamp that is free from cracks 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. 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 shown in FIGS. 3a and 3b. in this case,
The lid 15 is made of a metal material having a composition of 50% Fe-50% Ni, and has a shape different from that shown in FIG. Recesses 16 of the same shape are provided at two locations along the periphery of the lid 15, and a hole 17 is further bored in the recess 16. In the production of lamps,
Through the hole 17, a piece of glass 1 as shown in FIG.
At step 8, insert the pre-integrated electrode component, set the glass piece 18 so that it fits into the recess 16 of the lid 15, and then insert the glass piece 18 into the recess 1 with the glass frit 5.
6, the glass piece 18 is sealed. It has also been confirmed that in the lamp according to the present invention, since a sufficient amount of glass frit 5 is filled in the recess 16, there is very little leakage and cracking of the sealed portion 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.

[Table] As you can see from the table above, this fluorescent lamp
A luminous flux of approximately 920m is obtained with an input of 18W,
It is clear that it is an energy-saving lamp that can replace light bulbs. Furthermore, the lamp did not experience any leaks or cracks throughout its lifespan of over 6,000 hours, and demonstrated high production efficiency in mass production tests. Effects of the Invention As explained above, the present invention provides a recess with a hole in the periphery of the lid that is sealed to the opening of the luminous envelope, and sets and seals the electrode component in the recess. As a result, it is possible to provide a compact fluorescent lamp that can suppress the occurrence of leaks and cracks and can be mass-produced with high efficiency.

[Brief explanation of the drawing]

Figures 1a and 1b are a partially cutaway vertical cross-sectional view of a conventional compact fluorescent lamp, and the same X-X
Linear sectional view, Figure 2 is a partially cut away longitudinal sectional view of a compact fluorescent lamp with an improved structure, Figures 3a and b.
4 is a cutaway longitudinal sectional view and a sectional view taken along the line X--X of a fluorescent lamp according to an embodiment of the present invention, respectively, and FIG. 4 is a perspective view showing an example of an electrode component. 1... Luminous envelope, 2... Enclosure outer body, 3...
Container inner body, 4...Opening, 5...Glass frit, 6...Groove, 7, 8...Electrode, 9, 10...Inner lead wire, 11, 12...Outer conductor, 13...
Fluorescent body, 14'...exhaust pipe, 15...lid, 16...
... recess, 17 ... hole, 18 ... glass piece.

Claims (1)

[Claims] 1. A light-emitting container is provided with a curved container outer body and a container inner body overlapping each other, and at least a meandering groove for forming a discharge path is provided in the container inner body, and the Electrodes are provided at both ends of the groove, and a phosphor is coated on a portion or the entirety of the inner surface of the outer container body or the outer surface of the inner container body, and a rare gas is provided inside the groove. and a fluorescent lamp filled with mercury, in which a lid having a concave portion having a hole is joined to the opening of the light-emitting envelope, an electrode component is set in the concave portion, and the electrode is inserted into the groove through the hole. 1. A fluorescent lamp, wherein the electrode part is sealed in the recessed part.