JPS60157153A - Compact-type fluorescent lamp - Google Patents

Abstract

PURPOSE:To reduce the size of the stabilizer and reduce the weight of a compact-type fluorescent lamp, which is formed by placing an inner envelope inside an outer envelope and has a meander groove working as a discharging path, by igniting the lamp by using one of the electrodes as an anode. CONSTITUTION:An inner envelope 3 is placed inside an outer envelope 2 to form an emission encircling case 1'. The inner envelope 3' is provided with a meander groove 7 working as a discharge path and electrodes are placed in both ends of the groove 7. Next, after the inner surface of the groove 7 is coated with a phosphor 14, mercury and a rare gas are charged thereby constituting a compact-type fluorescent lamp. Here, an electrode 8' which is one of the above electrodes and consisting of a simple member not having a coil-like form, is directly attached to a bottom lid 5 made of a metallic material. The electrode 8' is used as an anode when igniting the lamp by a d.c. ignition system. As a result, the size and the weight of the lamp can be reduced by using a resistance 17 as the stabilizer. Additionally, it is possible to obtain a lamp in which no flickering occurs by preventing any cataphoresis.

Description

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

BACKGROUND OF THE INVENTION Conventional Structures and Problems With the advent of the energy-saving era, various compact fluorescent lamps have been proposed as energy-saving light sources to replace low-efficiency incandescent light bulbs. Figure 1 shows the inventors' patent application 1986-1.
This figure shows the structure of a compact fluorescent lamp proposed in No. 00867 and others.

Inside the container outer body 2 made of a translucent glass material and having a spherical or cylindrical curved outer shape, the container inner body 3 made of the same material is inserted and overlapped to form an arc tube container. 1 is formed. In the opening 4 of the container outer body 2, a lid 5 made of a metal material such as Nutenrenu is fitted with a glass frit 6.
Hermetically sealed. Further, the container inner body 3 is provided with a continuous meandering groove 7 that serves as a discharge path. Two coil electrodes 8 and 9 are held at both ends of the groove 7 by internal lead wires 10 and 11.
．． 11 are connected to external conductors 12 and 13, respectively. In this case, the inner leads 10.11 are also connected to the enclosure outer body 2.
The opening 4 is hermetically sealed. Container outer body 2
A phosphor 14 is coated on a part or all of the inner surface of the container inner body 3 and the outer surface of the container inner body 3 . In the above structure, the groove 7
The container inner body 3 and the region 16 surrounded by the lid 6 are in a spatially electrically conductive state. Therefore, the container outer body 2 and the lid 5
The entire interior of the luminous envelope 1 surrounded by is evacuated to vacuum through the exhaust tube 16, and then filled with excess mercury and a rare gas mainly composed of argon.

Now, the inventor studied a fluorescent lamp device in which the above-mentioned compact fluorescent lamp and a ballast are combined and integrated.

However, when a normal choke-type ballast is used as the ballast, there is a problem in that the weight of the compact fluorescent lamp device in which the ballast is integrated into a heavy lamp increases. Since incandescent light bulbs are extremely light, this can be said to be one of the obstacles to the widespread use of such fluorescent lamp devices as a replacement for light bulbs.

OBJECTS OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a compact fluorescent lamp device that is lighter, more reliable, and more easily mass-produced than conventional devices.

DESCRIPTION OF THE INVENTION The inventors have studied a compact fluorescent lamp device that satisfies the above objectives. As a result, we first came up with the idea of using DC lighting instead of the conventional AC lighting. In other words, in the DC lighting method, there is no restriking voltage for the lamp during AC lighting, so the lamp voltage can be set high, and a lightweight resistance ballast can be applied to the same lamp input. The inventor also discovered that even when the compact fluorescent lamp shown in Fig. 1 is lit with direct current, unlike a normal fluorescent lamp, mercury moves from the anode to the cathode during lighting, a phenomenon called cataphoresis. It has been found that this does not occur.

Based on this, a DC lighting method can be applied to the lamp shown in FIG. 1, and the weight of the ballast can be reduced as described above. Next, the inventors considered improving the compact fluorescent lamp shown in FIG. 1 by adapting it to a DC lighting system and making it more reliable and mass-producible. As a result, by adopting a structure in which the anode is directly attached to the lid made of the metal material, and by simplifying the anode structure itself and the anode mounting structure, we achieved the goal of being lightweight, reliable, and mass-producible. We succeeded in realizing a compact fluorescent lamp device.

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

FIG. 2 shows the structure of a compact fluorescent lamp according to the invention. Since the lamp according to the present invention is lit with direct current as described above, there is no need to use a coil electrode as in the conventional anode, and a simple anode may be used. That is, in the lamp of this embodiment, the anode consists of a rod-shaped anode 8'. The anode 8' is directly welded to the lid 6 made of metal material.

The outer conductor 12' of the anode 8' is welded to a suitable location on the outer surface of the lid 6.

In such a structure, there is no sealing process using a glass frit for the anode 8', which improves mass productivity and reduces costs. Furthermore, since the glass frit sealing portion of the anode is removed, defects such as leaks are more likely to occur, so the reliability of the lamp as a whole is improved.

FIG. 3 shows the construction of an apparatus using a fluorescent lamp having the structure shown in FIG. 17 is a resistor ballast, 18 is a rectifier bridge, 19 is a 60 μF smoothing capacitor, and 20 is a lamp starting device. As a lamp starting device,
For example, a small coil and a groin coil connected in series are used.

The table below compares the specifications and characteristics of the device of the present invention with conventional devices.

(See the following margin 2) In the above table, in addition to the fact that the lamp of the present invention is lightened by direct current using a resistance ballast and is lightened, the lamp efficiency (not including ballast loss) itself is It is noteworthy that this is approximately 20% higher than that of conventional lamps.There are two reasons for this.One is that when a fluorescent lamp is lit with direct current, the lamp efficiency increases by about 10% compared to when lit with alternating current. be.

Another reason is that, as mentioned above, with DC lighting it is possible to design a higher pump voltage and lower lamp current for the same lamp input than with AC lighting, and this low lamp current design also improves lamp efficiency. This is an increase of approximately 10%. In this way, another advantage of lighting a compact fluorescent lamp with direct current is an increase in lamp efficiency.
Even with the device of the present invention using a resistive ballast, a relatively high overall efficiency (including stability and ballast losses) is achieved.

Another advantage of the device according to the invention is that flicker-free light can be obtained due to direct current lighting.

It should be noted that it is not always necessary to integrate the lamp and the lighting circuit in the device, and even if the two are separated, for example by holding the lamp in a lighting fixture, it will be lightweight and reliable. It is possible to realize a compact fluorescent lamp device that is excellent in mass production and is free from flickering light.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention provides a light-emitting envelope in which a curved envelope outer body and an envelope inner body are overlapped, and a groove forming a discharge path is provided in a meandering manner. A lid made of a metal material is sealed to the opening of the outer body of the container, and a fluorescent lamp with an anode attached directly to the lid is operated using a direct current lighting method, thereby achieving light weight, reliability, and mass production. Therefore, it is possible to provide a compact fluorescent lamp device with excellent performance and no flickering of light.

[Brief explanation of the drawing]

Figures 1a and 1b are a partially cutaway front view of a conventional compact fluorescent lamp, and a cross-sectional view taken along line X-X in a;
FIG. 2 is a partially cutaway front view of a compact fluorescent lamp according to the present invention, and FIG. 3 is a lighting circuit diagram of a compact fluorescent lamp device according to an embodiment of the present invention. 1'... Luminous envelope, 2... Outer body of the enclosure, 3... Inner body of the enclosure, 4... Opening, 6 ...Lid, 6...Glass frit,
7...Groove, 8'...Anode, 10.11
...Inner lead wire, 13...Outer conductor, 14...Fluorescent material, 15...Space region, 17...Resistor , 18... Rectifier bridge, 19... Smoothing capacitor, 20...
... Lamp starting device. Name of agent: Patent attorney Toshio Nakao and one other person JP
, 1st page (Otsul) Male 2 (2) Figure 3

Claims (1)

[Claims] A light-emitting container is formed by overlapping a curved container outer body and a container inner body, 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 all or part of the inner surface of the outer body of the container and the outer surface of the inner surface of the container, and mercury is provided inside the light-emitting container. A compact fluorescent lamp in which a lid made of a metal material is sealed to the opening of the outer body of the container, and several electrodes are attached directly to the inside of the lid. A compact fluorescent lamp device, characterized in that the one electrode is used as an anode to light the compact fluorescent lamp with direct current.