JPS5966047A - Ignitor of fluorescent lamp - Google Patents

Abstract

PURPOSE:To prevent flickering condition at the time of igniting a fluorescent lamp by igniting it with a DC power where a meandering groove is provided in order to form a discharge path on an internal bulb body and it is combined with a curved external bulb body. CONSTITUTION:A luminous bulb 1 is formed by lapping an internal bulb body 3 provided with one meandering groove 6 serving as a discharge path, over the internal surface of a curved external bulb body 2. A couple of electrodes 7 are provided, and also a phosphor 10 is applied to the internal surface of external bulb body 2 and the external surface of internal bulb body 3. Moreover, mercury and a rare gas are sealed within the bulb 1, thereby forming a fluorescent lamp. This lamp is ignited with DC power converted from AC power 13 with a full- wave rectifying circuit 15. Accordingly, flickering phenomenon which is seen when a lamp is ignited by the AC power can be eliminated, and generation of cataphoresis phenomenon of mercury can also be suppressed, ensuring excellent igniting condition.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application The present invention relates to a compact fluorescent lamp point t'l device.

Conventional configuration and problems Incandescent light bulbs exhibit warm, pleasant light colors and excellent color rendering, are easy to use, and are compact, high-intensity lamps that make it easy to control light distribution when combined with lighting equipment. It has features such as easy lighting, and has been widely used for general lighting in homes, stores, etc. however,
As we enter an era of energy saving, the only drawback of incandescent light bulbs, their low efficiency, has become a problem, and recently there has been a demand for the development of small, high-efficiency discharge lamps that can replace incandescent light bulbs! There are 1.

The inventors anticipated such a situation and developed the
-37105 and other publications, proposed a new compact fluorescent lamp to replace incandescent light bulbs.

As shown in FIGS. 1(a) and 1(b), this fluorescent lamp has an outer container made of transparent glass material 1 having a spherical or cylindrical curved outer shape. A light-emitting container 1 is formed by inserting a container inner body 3 made of the same material into the body 2 and overlapping them. The enclosure outer body 2 and the enclosure inner body 3 are hermetically sealed to each other by, for example, a glass frit 5. In the inner body 3 of the container, a groove 6 that forms a discharge path is provided in a meandering manner so as to form one continuous discharge path, and two electrodes are installed at both ends of the groove 6. 7 is inside F
jlS is held by a lead wire 8 and further connected to an external conductor 9. 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 fluorescent light 10.
It is coated with 11 coats. In addition, 8+(v
r JJ+ It is evacuated to a vacuum via the trachea 11, and surplus mercury and rare gas are sealed.

Now, the inventors have carried out detailed measurements regarding the practical properties of the fluorescent lamp mentioned above. As a result, it was found that there was one problem. In other words, when such a fluorescent lamp was turned on at a low ambient temperature of 0 to 1oC, a noticeable flicker of light was observed and measured in the eyes for 2 to 8 minutes after lighting, and the results of the evaluation test It has been determined that such flickering may become a practical problem depending on the place of use. Next, the inventors analyzed this flickering phenomenon.As a result, it was found that this is not a phenomenon caused by moving stripes, which has been conventionally observed and measured, but that the discharge arc is stabilized when the image point is fired for an AC point. 11. We found that the flow fluctuates and the light flickers.Furthermore, when we investigated the phenomenon in which the stabilization time of the discharge arc fluctuates, we found that the mechanism of its occurrence itself was unclear. However, it has been found that such a phenomenon occurs conspicuously in the fluorescent lamp having a meandering radiation path according to the present invention.In other words, such a flickering phenomenon is not observed in ordinary straight-tube and ring-shaped fluorescent lamps. could not.

OBJECTS OF THE INVENTION An object of the present invention is to provide a lighting device for a fluorescent lamp that can prevent the above-mentioned flickering phenomenon from rain.

DESCRIPTION OF THE INVENTION In accordance with the present invention, such a fluorescent lamp is operated in countercurrent.

The inventors have carried out detailed aspects of achieving the objects stated above, so that the fluorescent lamps to which the present invention relates are operated using direct current rather than direct current operation as usual. Point with:
] It was found that the flickering phenomenon described in item 1 can be completely prevented from rain, and even more! 1. It has been found that, even when such a fluorescent lamp is turned on with direct current, no hin occurs during the mercury blackout phenomenon.

DESCRIPTION OF THE EMBODIMENTS Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.

The inventors prototyped a fluorescent rung 4 having the structure shown in FIG. Table 1 shows an example of the lamp used.

Such a fluorescent lamp is operated at 60 Hz using a conventional inductance ballast 12, as shown in FIG.

100v power supply 13/Kotokoro, No. 1 of Table 2
, '1.!+'l'l (1-withstand temperature 25℃) shown in IJ''I is not obtained./This Table 2 From Table 2, a luminous flux of approximately 900 Qm is obtained with a rung input of 18W. It is clear that this type of fluorescent lamp is useful as an energy-saving light source to replace light bulbs.

However, when I turned on this lamp in a place where the ambient temperature was as low as 5°C, I noticed a flicker of light in my eyes for about 4 minutes immediately after I turned on the lamp. is.

In this case, when I observed the lamp's F4, I-i, I-i, I found that the re-ignition part 14 of the lamp's F4 was fluctuating, as shown in Figure 3, and the discharge arc was stable. It turns out that time fluctuates through cycles/ζ.

In addition, in FIG. 3, the Vs tl-d, 'weight voltage waveform is shown as 7j.

- As shown in Fig. 4, the full-wave rectifier circuit 15 converts alternating current into direct current, and then the DC point) and fr (as observed and measured when using the above-mentioned alternating current point) °r, flickering tv, observation, measurement, of course, lamp electric 11
His shape never changed. Furthermore, as shown in the second term, the lamp efficiency was increased by approximately % compared to the case of DC lighting at the d-AC point t'J.

Next, the inventors anticipated that when such a fluorescent lamp was lit with direct current using the circuit shown in FIG. 4, the mercury catharsis phenomenon would occur, as in a normal fluorescent lamp, and so the above circuit was constructed. The aging test was conducted by 1-J. However, contrary to expectations, it was confirmed that the mercury cathode phenomenon caused by the direct current point did not occur in such a fluorescent rung. It can be said that this type of fluorescent lamp has a structure unique to this type of fluorescent lamp, in which the cathode and anode are in communication with each other despite a narrow gap. In other words, even if mercury does not collect at the cathode due to cataphoresis, it will move to the anode region through diffusion.

In addition, in the case of [DC willpower], the 51st Pl - still the 6th Pl.
As shown in the figure, a resistance ballast 16 may be used instead of the inductance ballast for lighting. Note that the flickering phenomenon becomes more pronounced when AC lighting is performed using a resistance ballast. However, if a resistive ballast is used, the ballast loss will increase and the overall efficiency of the device including the ballast loss will inevitably be much lower than the lamp efficiency. A so-called integral structure lamp, which is constructed integrally with the lamp and can be used as an IT point in a light bulb socket, can reduce the weight and provide a practical advantage.

As described in detail, the present invention includes: 1. It is possible to provide a compact fluorescent lamp spotting device that prevents light flickering even at low temperatures and improves lamp efficiency.

[Brief explanation of the drawing]

FIGS. 1(aJ and 1b) are a partially cut away vertical cross-sectional view and a cross-sectional view taken along line X-X of a fluorescent lamp related to the present invention, respectively;
Figure 2 shows a circuit showing the lighting of a conventional fluorescent rung and J-equipment.
Figure 1+d and Figure-C showing a lighting device for a fluorescent lamp according to the present invention. 1... Luminous envelope, 2... Enclosure outer body, 3... Container 1111 e)) Inner body, 4-open n1l (, 5... Glass frit, 6 Groove, 7... Electrode, 8...
・Internal lead wire, 9... Outer conductor, 10... Fluorescent material, 11...° Exhaust! gH112...-Inductance stabilizer, 13...Electrical 6111, . 15
・Full wave rectifier circuit, 16. ・Resistance stabilizer. Agent's name: 1 Toshi Nakao and 1 other person
Figure 1 Figure 2/2 Figure 3 Figure 4/2 Figure 5/2

Claims (1)

[Claims] A container outer body having a curved surface shape and a container inner body are overlapped, a meandering groove for forming a discharge path is provided in at least the container inner body, and electrodes are provided at both ends of the groove. Further, a phosphor is coated on the entire or part of the inner surface of the outer body of the container or the outer surface of the inner surface of the f'l'lJ MQ container, and rare gas and mercury are sealed in the groove. A device for lighting a fluorescent lamp, which uses direct current to turn on the fluorescent lamp.