JPS6047364A - Compact type fluorescent lamp - Google Patents

Abstract

PURPOSE:To prevent generation of leakage by projecting the end parts of a luminous tube outside a metal substrate while providing the sticking face between glass frit and the metal substrate outside. CONSTITUTION:The end parts 4' and 5' of a luminous tube are projected outside a metal substrate 6, while said projected end parts 4' and 5' are stuck to the outer surface of the metal substrate 6 with glass frit 14. And a ring 15 made of the same quality with the metal substrate 6 is provided in order to prevent glass frit 14 from flowing of the sticking surface. In said construction, the sticking face between glass frit 14 and the metal substrate 6 is compressed by the atmospheric pressure so that leakage of the glass frit 14 from the sticking surface can be completely suppressed.

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 the energy-saving era, the low efficiency of incandescent light bulbs that have been widely used in the past has become a problem, and there is a growing demand for the development of high-efficiency compact discharge lamps that can replace incandescent light bulbs. has been done.

Among the children, type c' belongs to low-pressure mercury vapor electric lamp,
Patent Application No. 1983-101913 (Japanese Unexamined Patent Publication No. 64-44)
A new type I type fireworks lamp is proposed in Japanese Patent Publication No. 370).

This fluorescent lamp is shown in FIG.
As shown in 111I, a spherical or +d cylindrical curved surface 7 is placed inside a container 1 made of Schiff 5 glass material, 2-
0-shaped tubes 2 and 3, which form an arc tube made by bending glass thin tubes, are held, and in this case, the two 0-shaped tubes
One end portions 4 and 5 of the shaped tube 2.3 are sealed to a metal substrate 6, for example, with a glass frit, and electrodes 7 and 8 made of tungsten are provided inside the end portions 4 and 5. It is provided. On the other hand, the container 1
The opening is sealed to the periphery of the metal substrate 60 by, for example, a glass frit. The inner surfaces of the U-shaped tubes 2 and 3 are coated with a phosphor 9, and the inside of the envelope 10, which is composed of the envelope 1 and the metal substrate, is vacuumed.
It was then sealed with a rare gas, mainly argon, and mercury. Furthermore, in the inner part 11 of the container 1,
A white diffusion phase material 11 is applied.

This makes the brightness of the outer surface of the container 1 more uniform. In the new compact fluorescent lamp, a series of electrical discharges is formed between the electrodes 7 and 8 through the 0-shaped tubes 2 and 3, and this mercury resonance line of 41 and 2537 mercury resonance lines is transmitted by the phosphor 9 to the hj visible light. has been converted to This operation is basically the same as that of a normal fluorescent lamp. In addition, new (
The feature of the compact yt<fluorescent rung is that during steady lighting, the bottom of the mercury vapor is regulated by the coldest point source in the container 1, where the bottom is in contact with the outside air.As a result, the vapor pressure increases excessively. The advantage is that it is possible to realize a lamp with high efficiency and high luminous flux while being more compact than conventional lamps. By the way, in the conventional tube shown in Fig. 2, which has already been put into practical use, a double U-shaped tube 12 made by doubly bending a thin tube is inserted into an outer tube globe 13 at external pressure.
It's confusing. In such a case, double U-shaped pipe 12i1
, the completed fluorescent lamp itself is hermetically sealed, and the mercury vapor pressure during steady operation rises excessively from the optimum level (6 to 10 x 1 QTOrr) I: from the Y1 bundle plane. Therefore, there was a problem in that the Lang efficiency decreased and it was difficult to realize a compact lamp with high luminous flux.

Now, the inventors have developed various 1, jl, and 1 impact lamps with the basic structure shown in FIG.
I did it. As a result, it was found that leakage was particularly likely to occur at the glass frit sealed portion between the j> group substrate 6 and the ends 4.6 of the O-shaped tubes 2 and 3 forming the arc tube, as shown in FIG. From this leak! Further investigation into the cause of 1 revealed that the adhesive force between the metal substrate 6 and the IF glass frit was not originally sufficient, and leakage occurred at the part where the two were sealed together.Purpose of the InventionThis Invention The purpose of the present invention is to provide a highly reliable compact fireworks lamp that completely prevents the occurrence of leaks.

91 of the IS luminous tube outside the metal substrate)
1. Protrude part 1 of the glass frit and metal substrate.
1. A drawing surface is provided on the outside of the metal substrate, and the glass frit sealing surface is compressed by atmospheric pressure. I don't want to receive it.
It is a small thing, and because of this, r+iI glass fritz]
・It is possible to prevent leakage from the sealing surface.

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

FIG. 3 shows a ml-shaped lamp according to an embodiment of the present invention. As shown in FIG. The protruding ends 4' and 5/ are connected to the glass frit 14-('O sealed to the outer surface of the metal substrate 6).
A sealing surface between the glass frit 14 and the metal substrate 6 is provided on the outer surface of the metal plates. In order to prevent the glass frit 14 from flowing out from the sealing surface, a metal ring 15 made of the same material as the substrate is used.
There are 7 bars.

In such a structure, the glass frit 14 and the metal base ijV,
Since the sealing surface 6 was compressed by atmospheric pressure, the leakage 6 at the sealing surface of the glass frit 14 could be completely suppressed. In this case, glass/IJノ)・14
The adhesion force Qj of the ends 4' and 5' of the arc tube was strong, and no leakage occurred.

In 11 days, we made an initial prototype as shown in Figure 4.
If the structure of the sealing part is as follows:
-Since it is sealed on the inner surface of the plate 6, the sealing surface of the crow frit receives a force in the direction of pricking due to the atmospheric pressure Q, which causes leakage.

1). In the structure shown in Figure 3, 2 in Figure 1 is used as an arc tube.
A double U-shaped tube 16 is used instead of the two O-shaped tubes 2 and 3, and in this case, the mercury vapor pressure is regulated by the coldest point temperature of the container 1. The front 16 is provided with a through hole 17. 1. Adopting a double U-shaped tube 16 like this. This simplifies the assembly process when manufacturing lamps.

A spherical container is used instead of the container 1 shown in FIG. 1.

The specifications and characteristics of a compact fluorescent lamp based on the present invention and implemented using the structure shown in FIG. 3 are summarized in the table below.

An initial luminous flux of about 810/1 m, which is equivalent to the luminous flux of a 60 W incandescent light bulb, was obtained. It has been realized 11 times.

In addition, in FIG. 3, instead of the metal ring 15,
As shown in FIG. 5, four parts 18 may be provided by molding on the eleventh part of the 'yl> group substrate 6 to prevent the glass slit 14 from flowing out.

As described in detail, the present invention adopts a structure in which the sealing surface between the glass slit and the metal substrate is compressed under atmospheric pressure (fH), so that one loop of the sealing surface It is possible to provide a highly reliable CONOVAC type 1 fluorescent lamp with Ilh-blocking.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional compact fluorescent lamp;
The figure shows a cross section of a compact fluorescent lamp that has been put into practical use. FIG. 5 is a sectional view of a main part of a compact fluorescent lamp according to another embodiment of the present invention. 1... Container, 4'+ 5', one end, 6... Metal substrate, 7, 8-, Pole: 9, Fluorescent material, 11...
Enlarged iiQ (, Eye-1113... Outer tube glove, 14
・Glass frit, 15... Metal ring, 16 Double U'7' shaped tube, 1. Communication hole, 18- Recess. Name of one junior patent attorney: Toshi Nakao, male, 6 koku or 1
Nagoya University) Satoshi So

Claims (1)

[Claims] The opening of a curved glass container is sealed with a metal substrate to form an envelope. The end of the tube is sealed to the gold H1 substrate with a glass frit, and the inside of the glass container and the arc tube are in mutual communication with each other, and a rare gas and mercury are sealed therein.
21. In a compact fluorescent lamp in which a fluorescent tube is formed on the inner surface of the arc tube, the end of the arc tube (1) is made to protrude from the outside of the metal substrate, and this protruding end is A compact fluorescent lamp characterized in that: the glass frit covers the outer surface of the metal substrate.