JPS6050892A - Emergency illuminator - 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 an emergency lighting device that lights a discharge lamp at high frequency using an inverter in an emergency.

[Background technology]

Emergency lighting devices are generally required to be installed at a certain rate among a large number of regular lighting devices in order to prevent confusion due to power outages caused by fire, etc., and to enable safe evacuation. A certain ratio means that the emergency lighting equipment will be installed at intervals that will satisfy a certain value of floor illuminance during a power outage.

As shown in Figure 1, a general relay switching type emergency lighting system uses power sources a, A, and l drawn from a commercial power source 1.
Terminals 2 and 3 are connected to A, respectively.

This emergency lighting device is composed of a charging circuit 1 that is constantly supplied with power from a commercial power source I, and a transistor inverter (2) that is supplied with power from the charging circuit (2) during a power outage.

To explain in more detail, this emergency lighting device.

If commercial power supply 1 is normal, VC#-t, power transformer 4, rectifier 5. As the storage battery 7 is charged via the charging resistor 6, the power failure detection relay 8 is excited by the voltage between the power supply lines A□ and A2, and the relay contact 8a is connected between COM and No, and the transistor is connected from the storage battery 7. The power supply to the inverter (2) is stopped, and the fluorescent lamp 9 is kept in the off state.

On the other hand, when the commercial power supply 1 has a power outage, charging of the storage battery 7 is stopped, and the excitation of the power outage detection relay 8 is also stopped, and COM-NC of the relay contact 8a is connected. The transistor inverter (1) starts high-frequency oscillation, and the output of this high-frequency oscillation causes the fluorescent lamp 9 to be lit in an emergency. There are 10 inspection switches.

The switching characteristics between the extinguished state and the emergency lighting state in the emergency lighting device having such a configuration are determined by the sensing voltage and holding voltage characteristics of the power failure detection relay 8.

This characteristic is shown in FIG. Figure 2 shows the power supply voltage V.

This shows a state in which the voltage decreases, which is the turn-off voltage of the A-type regular lighting device, and below which the regular lighting device turns off the light.

This is the holding voltage (inverter oscillation start voltage) of the power failure detection relay 8, and when it becomes lower than this, the relay contact 8a COM-NC is connected, the switch is switched to the emergency lighting side, and the fluorescent lamp 9 transistor is turned on. The inverter turns on the emergency light. E is the rated voltage.

In addition, FIG. 2(B) shows a state in which the power supply voltage vAo increases, which is the sensing voltage (inverter oscillation stop voltage) of the power failure detection relay 8, and when it exceeds the sensing voltage C, the power failure detection relay 8 activates. Relay contacts 8aI/-iCOM-N0 are connected, and fluorescent lamps 9I/'i are turned off. At this time, the regular lighting device is in the off state. D is the starting voltage of the regular lighting device, and when the starting voltage is exceeded, the regular lighting device starts regular lighting.

This emergency lighting device has power failure detection relay 8 as described above.
If the holding voltage B is lower than the lamp turn-off voltage of the regular lighting device, the fluorescent lamp 9 will turn on later than the lamp of the regular lighting device turns off when the voltage of the commercial power source 1 drops.
There were periods when there was no lighting at all, and it was not possible to adequately ensure safety in an emergency.

As shown in Figure 3, a general non-contact switching type emergency lighting system has terminals 2 and 3 connected to the power supply MA□, A2 drawn from the commercial power supply, and the commercial power supply is normal. In some cases, the power transformer4. A storage battery 7 is charged via a bridge rectifier 5' and a charging resistor 6. At this time, the transistor 11 has diodes 12 to 15 . A reverse bias is applied by the capacitor 16 and the resistor 17, so that only one transistor is turned off.

On the other hand, when the commercial power supply 1 has a power outage (or the inspection switch IO is opened), charging of the storage battery 7 is stopped and the diodes 12 to 15. The reverse bias voltage applied to the transistor 11 by the capacitor 6 and the resistor 17 (current detection circuit) K disappears, and the base current flows from the storage +11!7 through the transistor IIK diode 15 and the resistor 17, and the transistor 1 becomes conductive and power is supplied to the transistor inverter H, which causes the transistor inverter 2 to start high-frequency oscillation.

The fluorescent lamp 9 is turned on in an emergency by this still frequency oscillation output.

The switching characteristics between the lights-off (5) state and the emergency lighting state in the emergency lighting device having such a configuration are determined by the on/off characteristics of the emergency lighting switching transistor. This characteristic is shown in FIG. Figure 4 (A)! d shows a state in which the power supply voltage VAo decreases, and 8 is the turn-off voltage of the regular lighting device, below which the regular lighting device turns off. When the operating voltage (inverter oscillation starting voltage) of the transistor B (1) becomes lower than that, the transistor inverter (2) operates and the fluorescent lamp 9 is turned on in an emergency.

Further, FIG. 4(B) shows a state in which the power supply voltage VAo increases, and C'1-j) the operating voltage of the transistor 11 (
Inverter oscillation stop voltage), when this is exceeded, transistor 1 turns off and emergency lighting stops. D is the starting voltage of the regular lighting device, and when the starting voltage is exceeded, the regular lighting device starts regular lighting.

The non-contact switching type emergency lighting fixture shown in FIG. 3 also has the same problems as the relay switching type described above.

[Purpose of the invention]

(6) An object of this invention is to provide an emergency lighting device that can ensure safety in an emergency.

DISCLOSURE OF THE INVENTION] The emergency lighting device f of the present invention includes a charging circuit that receives power from a commercial power source to charge the storage 11 and a battery, and oscillates when the power is supplied from the storage battery when the voltage of the commercial power source drops. and an inverter for lighting an emergency lamp, and the oscillation start voltage of the inverter is set to a rung-out voltage line -H of a regular lighting device that is supplied with power from the emergency power supply and lights a regular rung near the emergency lamp. It is characterized by what it did.

An embodiment of this invention will be described based on FIG. 5. As shown in FIG. 5(A), this relay switching type emergency lighting device has a holding voltage B of the power failure detection relay 8 in FIG.
The turning off voltage A of all the regular lighting devices is set to be higher than that, and as shown in Figure 5 (T()), the sensing voltage C of the power failure detection relay 8 is set to be higher than the starting voltage of the regular lighting devices. , the circuit is the same as that shown in FIG.

If the switching characteristics are as shown in FIG. 5 (4) and (B), both when the voltage of the commercial power supply 1 drops and when the voltage rises,
Since the fluorescent lamp 9 is always lit when the regular lighting device is turned off, safety in an emergency can be sufficiently ensured.

Another embodiment of the invention will be described based on FIG. This non-contact switching type emergency lighting device has an inverter oscillation starting voltage B′ in FIG. 3, as shown in FIG. 6 (4).
is set higher than the turn-off voltage A of the regular lighting device, and the sixth
As shown in Figure (B), the inverter oscillation stop voltage C' is set to be higher than the starting voltage of the regular lighting device. The circuit is the same as that shown in FIG.

With this configuration, it is possible to sufficiently ensure emergency safety both when the voltage of the commercial power source 1 drops and when the voltage rises, similar to the above-described embodiment.

Note that the inverter oscillation start voltage B' and stop voltage C'
By providing a variable adjustment terminal on the outside of the fixture, the yA for the turning off voltage and starting voltage of the regular lighting device around 1 can be adjusted.
Can be easily adjusted.

〔Effect of the invention〕

According to the emergency lighting device of the present invention, it is possible to sufficiently ensure safety in an emergency.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram of a general contact switching type emergency lighting device, and Fig. 2 (B) is its switching voltage characteristic diagram. Figure 3 is a circuit diagram of a general non-contact switching type emergency lighting system, Figure 4 (A), (R) is the switching voltage characteristic diagram, and Figure 5 (A), (R) is this. A switching voltage characteristic diagram according to an embodiment of the invention, FIG. 6 (old) is a switching voltage characteristic diagram according to another embodiment of the invention. 1... Commercial power supply, ■... Charging circuit, ri... Transistor inverter, 7... Storage battery, 8... Power outage detection relay. 9... Fluorescent lamp (9) Figure 2 Figure 4 Figure 5

Claims (2)

[Claims] (1) A charging circuit that is supplied with power from a commercial power source to charge a storage battery, and an inverter that is supplied with power from the storage battery and oscillates to light an emergency lamp when the voltage of the commercial power source drops, and that starts oscillation of the inverter. An emergency lighting device in which a voltage is set to be higher than a lamp extinguishing voltage of a regular lighting device that is supplied with power from the commercial power source and lights a regular lamp in the vicinity of the emergency lamp. (2) The oscillation stop voltage of the inverter is set to be higher than the lamp starting voltage of the regular lighting device.
) Emergency lighting equipment as described in section 2.