JPH03173096A - Disaster-preventive lighting device - Google Patents

Abstract

PURPOSE:To obtain a disaster-preventive lighting device sure to start and light a discharge lamp without making a high-frequency generation device large-sized and high-priced, by providing a charging control device suppressing charging from the high-frequency generation device to a battery at the time of starting the discharge lamp. CONSTITUTION:When normal power supply 5 is closed, a high-frequency generation device 1 outputs high frequency power. Accordingly, the high-frequency power is supplied to a discharge lamp 6 through an output winding 3b. On the other hand, other high-frequency power is generated also in an output winding 3c, however, since at this time a transistor 22 is turned OFF, a timer 18 of a charging control device 16 cannot turn a transistor 17 ON. Since therefore no charging current is supplied to a battery 7, and even when the discharge lamp 6 demands a larger amount of power than at the normal lighting time at its starting time, the high-frequency generation device 1 can supply power so as to make the starting possible. Thus, no overload is generated to the high- frequency generation device so as to start and light the discharge lamp while making the device small-sized and low-priced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a disaster prevention lighting device equipped with a battery that serves as a power source in an emergency.

(Prior Art) Conventionally, a device of this type has been proposed in Japanese Patent Application Laid-Open No. 57-160337. This device normally uses the output of the high-frequency generator to light the discharge lamp, and uses part of the output to charge a battery, which is an emergency power source.In the event of an emergency, the battery powers the emergency lighting. It is designed to light up the load.

(Problems to be Solved by the Invention) The conventional charging device described above utilizes the output of the high frequency generator as a battery charging power source, so the charging device can be made smaller and less expensive. However, it was found that this product also needs improvement in the following points.

That is, as mentioned above, the high-frequency generator normally uses a discharge lamp and a battery as its loads, but when the discharge lamp is started, the discharge lamp requires more power than when it is normally lit, so it tends to be overloaded. , the discharge lamp cannot be started and lit reliably.

Alternatively, the output capacity of the high frequency generator must be increased. However, increasing the output capacity inevitably increases the size and price of the high frequency generator.

An object of the present invention is to improve such conventional devices and provide a disaster prevention lighting device that can reliably start and light a discharge lamp without increasing the size or price of a high-frequency generator. It is something.

[Configuration of the Invention (Means for Solving the Problems)] The present invention is a device that normally lights a discharge lamp and charges a battery using the output of a high-frequency generator, and when starting the discharge lamp, The present invention is characterized in that it includes a charging control device that suppresses charging of the battery from the high frequency generator for a predetermined period.

(Function) According to the present invention, when the discharge lamp is normally started, for example, when the power is turned on after installation, the high frequency generator outputs high frequency power and supplies it to the discharge lamp. At this time, since charging of the battery is suppressed, no power is supplied to the battery, or less than a predetermined amount of power is supplied to the battery. Therefore, even if a discharge lamp requires more power when starting than when lighting, it is possible to supply extra power to the distributed lamp, which reduces the amount of power supplied to the battery, making it possible to start and light the discharge lamp. do.

After a predetermined period of time has elapsed, a required charging current is supplied to the battery to prepare the battery for an emergency.

At this time, the discharge lamp is already lit, so even if the required charging current is supplied to the battery, the discharge lamp will not turn off. It can be made smaller and cheaper.)

In the event of an emergency, such as a power outage, of the regular power source, the battery lights up the emergency lighting load and continues illumination.

In the present invention, the emergency lighting load may also use the discharge lamp as a light source. In this case, it is also possible to use the high frequency generator as well.

That is, the common power supply is usually a commercial frequency power supply, and the battery usually has a capacity of about 10V, but if the problem of the voltage difference between the two can be solved, they can be used for both. As a means for solving this problem, it has already been proposed to first boost the voltage using another means and then supply it to the high frequency generator, or to switch the boost ratio of the output transformer of the high frequency generator. Of course, a separate dedicated high frequency generator may be provided. Furthermore, the emergency lighting load may have a light source separate from the discharge lamp.

Further, in the present invention, the discharge lamp may be arbitrarily turned on or off at any time. In this case, since this type of lighting device is required to continuously charge the battery, the high frequency generator needs to be continuously operated.

Therefore, the discharge lamp may be turned on and off on the output side of the high frequency generator. The charging control device only needs to be equipped with something like a timer that responds to the lighting signal.

(effect) An embodiment of the present invention will be described below with reference to FIG.

Reference numeral 1 denotes a high frequency generator, which includes, for example, an inverter device 2, an output transformer 3, and a rectifier 4. The output transformer 3 includes an input winding 3a and an output winding 3b.
13c.

Reference numeral 5 denotes a common power source, such as a commercial AC power source, which supplies power to the high frequency generator 1 at all times. Reference numeral 6 denotes a discharge lamp, for example, a fluorescent lamp, which is always lit by the output of the high frequency generator 1. Note that although the filament of the discharge lamp 6 and the heating winding of this filament are not shown in the drawings, those skilled in the art can suitably implement the heating winding. Reference numeral 7 denotes a battery, which is normally charged with a portion of the output of the high frequency generator 1. That is, the output voltage of the output winding 3c of the output transformer 3 is used as a power source, and the battery is charged via a rectifier 8 and a charging resistor 9.

The battery 7 supplies power to the emergency lighting load 10 to turn it on when the regular power source 5 is in an emergency state such as a power outage or voltage drop. In this embodiment, the emergency lighting load 10 uses the discharge lamp 6 as a light source, and is equipped with a second high-frequency generator 11 as its lighting device. Further, the means for detecting the emergency state of the common power source 5 may be any well-known means as appropriate, and in this embodiment, it is constituted by a relay that responds to the voltage of the common power source. That is, the excitation coil 12 of the relay is provided between the output ends of the rectifier 4 of the high frequency generator 1. A first switching contact 13 of this relay is inserted between the battery 7 and the emergency lighting load 10. Further, the second and third switching contacts 14 and 15 are connected to each electrode of the discharge lamp 6 and the output lamp 3, respectively.
or between each electrode of the discharge lamp 6 and the output terminal of the second high-frequency generator 12.

Reference numeral 16 denotes a charging control device, which includes a transistor 17 inserted between the rectifying device 8 and the charging resistor 9, and a timer 18 for controlling conduction of the transistor 17. The timer 18 suppresses charging of the battery from the high frequency generator 1 for a predetermined period when the discharge lamp 6 is started. This timer is composed of, for example, a resistor 19, a capacitor 20, a low voltage element 21, and a transistor 22.

Next, the operation of this embodiment will be explained. When the regular power supply 5 is turned on, the high frequency generator 1 outputs high frequency power. Therefore, the high frequency power is supplied to the discharge lamp 6 via the output winding 3b. On the other hand, the high frequency power is also generated in the output winding 3C, but at this time, the timer 18 of the charging control device 16 cannot turn on the transistor 17 because the transistor 22 is off. Therefore, no charging current is supplied to the battery 7. In other words, the battery 7
does not become a load on the high frequency generator 1.

In this way, the battery 7 does not become a load from the high frequency generator 1, so when the discharge lamp 6 is started,
Even if more power is required than during normal lighting, it can be supplied from the high frequency generator 1, making starting possible.

Thereafter, when a predetermined period of time has elapsed, that is, when the capacitor 20 of the timer 18 of the charging control device 16 is charged and the transistor 22 is turned on, the transistor 17 is turned on.
Charging current is now supplied to the battery 7. However, at this time, since the discharge lamp 6 is already lit, the discharge lamp 6 will not go out even if charging of the battery 7 is started.

Further, the predetermined period may be longer than the time required for starting the discharge lamp 6, and is usually within several seconds or about ten seconds at most, so that virtually no problem will occur to the battery 7.

In the event of an emergency of the regular power supply 5, the excitation coil 12 of the relay is no longer energized, its contacts 13 are closed, and contacts 14 and 15 are closed.
from the output winding 3b side to the second high frequency generator 1, respectively.
Switch to side 1. Therefore, power is supplied from the battery 7 to the second high frequency generator 11 to operate it. Second
The output of the high frequency generator 11 is supplied to the discharge lamp 6 through the contacts 14 and 15, and the discharge lamp 6 is continuously lit.

A second embodiment of the present invention will be described with reference to FIG.

In this embodiment, parts that are the same as or correspond to those in FIG. 1 are given the same reference numerals, and explanations thereof will be omitted. In this embodiment, an emergency lighting load 30 consisting of a third high-frequency generator 31 and a discharge lamp 32 is used. The rest of the configuration is the same as that in FIG. 1.

Therefore, since the operation of this embodiment is easily understood,
The explanation will be omitted. In this embodiment, the light source of the emergency lighting load 30 may be a light bulb.

In this case, it is also possible to omit the third high frequency generator 31.

A third embodiment of the present invention will be described with reference to FIG.

In this embodiment as well, parts that are the same as or correspond to those in FIG. 1 are given the same reference numerals, and their explanation will be omitted. In this embodiment, the discharge lamp 6 can be controlled to be turned on or off at will while the high frequency generator 1 is in operation. Further, the battery 7 can be continuously charged.

That is, a switch 40 for blinking and blinking is provided between the output ends of the output winding 3b, and a reset circuit 50 responsive to a lighting signal is added to the charging control device 16. 60 is a control device that outputs a lighting signal and a lighting-off signal. The switch 40 includes, for example, a diode bridge 41 and a contact 42 provided between the output ends of this bridge.

Further, the reset circuit 50 includes a series circuit of a current limiting resistor 51 and a 5CR52 connected in parallel to the capacitor 20, and a differential circuit 53 and a contact 54 provided in relation to the gate of the 5CR52.

The operation of this embodiment will be explained. When lighting the discharge lamp 6,
The control device 60 outputs a lighting signal as shown in FIG. This lighting signal causes contact 42 to open and contact 5 to open.
4 is closed. Therefore, high frequency power is applied to the discharge lamp 6. On the other hand, by closing the contact 54, a pulse output is generated from the differentiating circuit 53, turning on the 5CR52. Therefore, the charge charged in the capacitor 20 is
Since the discharge occurs rapidly through the CR 52, the timer 18 operates in the same manner as when the power is turned on, as described in the first embodiment. Therefore, the discharge lamp 6 is started and lit. Said 5C
R52 turns off when the discharge current disappears.

When the discharge lamp 6 is to be turned off, the control device 60 outputs a third turn-off signal. Contact 42 with this signal
is closed and contact 54 is opened.

Therefore, the discharge lamp 6 is turned off and the battery 7 continues charging.

[Effects of the Invention] As described in detail above, the present invention lights a discharge lamp and charges a battery using the output of a high frequency generator, and when starting the discharge lamp, for a predetermined period, Since the charging of the battery is suppressed, the discharge lamp is
Even if this amount of power is required, the high frequency generator will not be overloaded and the discharge lamp can be started and lit. Moreover,
Since the high frequency generator requires fewer components than conventional ones, the device can be provided in a small size and at low cost.

[Brief explanation of the drawing]

1 to 3 are circuit diagrams showing different embodiments of the present invention. 1...High frequency generator, 5...Common power supply, 6...
Discharge lamp, 7... Battery, 16... Charging control device.

Claims (1)

[Claims] (1) A high-frequency generator that is always operated by being supplied with power from a regular power supply; A discharge lamp that is lit by the output of this high-frequency generator; A discharge lamp that is always charged by a part of the output of the high-frequency generator;
A battery that supplies power to an emergency lighting load in the event of an emergency of the regular power supply; A charging control device that suppresses charging of the battery from the high frequency generator for a predetermined period when the discharge lamp is started; A disaster prevention lighting device characterized by: