JPS59123197A - Device for firing fluorescent lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a fluorescent lamp lighting device, and more particularly to a lighting device for starting a straight tube fluorescent lamp with a bulb length of 1620 to 1680 mm using a starter containing a nonlinear capacitor. It is something.

[Background technology]

The present applicant previously proposed a fluorescent wamp true light device that includes a fluorescent lamp that is suitable mainly for signboard lights, as shown in Figure 1.
(Patent Application No. 167048/1982). Specifically, the length is 1620 to 1680 m + n, the outer diameter is 29 to 35 mm, and electrodes are provided at both ends of the bulb, and Argon Ganu is 17 to 2 mm.
．． It is configured such that the operating voltage is 243 V or less and the non-operating limit voltage is 200 V or more at a pressure of 7 Torr.

According to this lighting device, the conventional 6-foot signboard light can be changed to FL 20.
, F T , 4 Q. Since it is composed of a combination of different types of straight tube fluorescent lamps, glow starters, and ballasts, it is possible to significantly simplify the internal structure of the signboard lamp, and to effectively reduce the It is possible to achieve this.

However, while this effect cannot be obtained, glow starter B is still used as a starting means for straight tube fluorescent lamp A.
When a plurality of straight tube fluorescent lamps A are used, the lighting time tends to vary. especially,
There is a problem that it feels uncomfortable when used for general lighting and (-).

Such problems can be easily solved by changing the ballast C to a rapid start type, but the ballast is expensive and requires starting aid means to be added to the straight tube fluorescent lamp. [Disclosure of the Invention] In view of these points, the present invention has been developed to improve the starting characteristics of a straight tube fluorescent lamp with a simple structure that makes it less economical. To provide a fluorescent lamp lighting device that can be improved to a great extent.
Specifically, a ballast with a secondary open circuit voltage of 240 to 300 cm and a leakage characteristic has a length of 1620 to 1680 cm.
A straight tube fluorescent lamp with electrodes is connected in series to both ends of a bulb with an outer diameter of 29 to 35 mm + n, and a starter containing a nonlinear capacitor is connected in parallel to the non-power side of the straight tube fluorescent lamp. It is characterized in that it has a very close contact with hV L/.

According to this invention, although straight tube fluorescent lamps can be lit in conjunction with the action of a starter including a non-linear J (recondenser), lighting when a plurality of straight tube fluorescent lamps are lit at once is possible. Variations can be reduced.

Furthermore, since it is not necessary to use a ballast with a complicated structure as in the rapid start type, economical efficiency is not impaired even when a new starter is employed.

[Best mode for carrying out the invention]

Next, an embodiment of the present invention will be described with reference to FIG.

In the figure, ■ is a ballast with a secondary side open circuit voltage of 240 to 3 OOV and leakage characteristics, for example, $'i? The secondary coil has current-limiting characteristics. and,
The secondary side of this ballast 1 is equipped with electrodes at both ends of a bulb with a length of 1620 to 1680 mm and an outer diameter of 29 to 35 mm, and argon is sealed at a pressure of 17 to 2.7 tOrr. Straight tube fluorescent lamps 3 are connected in series. A starter 4 is connected in parallel to the non-power side of the straight tube fluorescent lamp 3. This starter 4 is composed of a nonlinear capacitor 5. Here, the nonlinear (saturable) capacitor 5 has its voltage I1. The relationship between V and charge Q has the characteristics shown in Figure 3. Such nonlinear characteristics can be obtained with ferroelectric materials such as barium titanate, and in single crystals, the characteristics shown in Figure 3 (a) are as follows. In the case of a polycrystalline material, the saturation characteristic shown in FIG. 13(b) is obtained.

Now, in Fig. 2, when the AC power supply E is connected to the input side of the ballast 1, the secondary open circuit voltage e of the ballast l is applied to the nonlinear capacitor 5, as shown in Fig. 4(a). and current 1 flows. When the straight tube fluorescent lamp 3 is not lit, the current l has a waveform that rapidly decreases as the nonlinear capacitor 5 enters the saturation region, and on the other hand, the terminal voltage v5 of the nonlinear capacitor 5 sharply decreases in the saturation region. The waveform becomes 5-1 on the voltage. The electrodes of the straight tube fluorescent lamp 3 are heated by this current l, and the electrodes of the straight tube fluorescent lamp 3 are heated.
As shown in FIG. 3, a voltage having a peak value sufficiently higher than that of the open type I1Ee is applied to the straight tube fluorescent lamp 3. and,
When the electrodes are sufficiently heated, turn on the straight tube fluorescent lamp 3.
lights up.

According to this embodiment, the straight tube fluorescent lamp 3 having a longer bulb length than P L 4.0 can be reliably lit in conjunction with a simple starter configuration.

In addition, since it does not have mechanical contacts unlike a glow starter, stable operating characteristics can be expected over a long period of time. Fig. 5 shows another embodiment of the present invention.

In the figure, 4. A starter is connected in parallel to the straight tube fluorescent lamp 3, and is constituted by a parallel circuit of a nonlinear capacitor 5 and a bidirectional two-terminal thyristor 6.

Now, when AC power E is applied to the input side of ballast 1, the 6th
As shown in the figure, the bidirectional two-terminal thyristor 6 turns on at phase 0□46- near the peak value of the secondary side open circuit voltage e, and the ballast 1. A current l flows through the electrodes of the B tube type fluorescent lamp 3. Then, it is inverted at a phase θ26 near the peak value of the secondary voltage of the next IL cycle. At this time, the bidirectional two-terminal thyristor 6 is turned off L, ? I
The t current is commutated to a nonlinear capacitor 5. At this time, a pulse voltage (■5) with a high peak value is generated. Similarly, in the next half cycle, the n-directional two-terminal thyristor 6 is turned on at the phase A''■01b, and turned off at the phase 0□h to conduct electricity and generate a pulse voltage. The tubular fluorescent lamp 3 is turned on.

FIG. 7 shows a further different embodiment of the invention. In the figure, 4. is a starter connected in parallel to a straight tube fluorescent lamp 3, which includes a circuit in which a nonlinear capacitor 5 is connected in series to a parallel circuit with a diode 7 and a resistor 8, and a bidirectional two-terminal thyristor 6. are connected in parallel to form 1111. In this circuit, the resistor 8 is a current limiting resistor that prevents a steep pulse current from flowing into the straight tube fluorescent lamp 3.

In the present invention, the starter including the nonlinear capacitor is not limited to the above embodiments and can be modified as appropriate. Further, the ballast may have a choke coil portion and a booster portion separately provided as shown in FIG.

゛　5

[Brief explanation of the drawing]

° Fig. 1 is an electric circuit diagram of a fluorescent lamp lighting device which is the premise of the present invention, Fig. 2 is a daily diagram showing an embodiment of the present invention, and Fig. 3 is a non-linear diagram of a non-linear capacitor. line! v11 characteristic diagram, FIG. 4 is a waveform diagram, FIG. 5 is an electric circuit diagram showing another embodiment of the present invention, and FIG. 6 is a non-linear power diagram in the circuit shown in FIG.
The 'd℃ pressure and current waveform diagrams of the capacitor and bidirectional two-terminal thyristor, Figures 7 to 8 (2) are further details of the present invention.
? 1 is a circuit diagram showing an embodiment of the present invention. In the figure, 1, 1 is a ballast, 3 is a curved fluorescent lamp, and 4 is a ballast.
, 4. , 42 is a starter, 5 is a non-linear J9j + capacitor and a heater-1 Fig. 5 Fig. 7 87654° Fig. 6 Fig. 8

Claims (1)

[Claims] A straight tube fluorescent lamp with a secondary open circuit voltage of 240 to 300 V, a length of 1620 to 1680 mm, and an outer diameter of 29 to 35 mm, with electrodes at both ends exposed to a ballast with a casing characteristic. What is claimed is: 1. A fluorescent lamp lighting device characterized in that a starter including a nonlinear capacitor is connected in parallel to the non-power supply side of a straight tube fluorescent lamp.