JPS5843981B2 - Hijiyouyoushiyoumeisouchi - Google Patents

Description

[Detailed description of the invention] This invention relates to an emergency lighting device.

Emergency lighting equipment is intended to provide lighting in an emergency, and is normally activated by detecting a power outage, switching from commercial lighting to emergency lighting, or switching from no lighting to emergency lighting. Provide lighting to ensure safe evacuation of people.

Figure 1 shows a conventional circuit for such an emergency lighting system, in which a transformer 2 is connected to both ends of a commercial power supply 1, and a rectifying diode 3 and a current limiting resistor 4 are connected to the output terminal of the transformer 2. A storage battery 5 serving as an emergency power source is connected through the
An emergency lighting lamp 8 is connected to both ends of the storage battery 50 via a normally closed contact 7 of a relay 6 connected to a commercial power source 1.

In such a device, in the case of commercial power supply, the storage battery 5 is always in a charging state, and on the other hand, since the relay 6 is energized, its normally closed contact 7 is open, and the connection of the lamp 8 to the storage battery 5 is closed. Therefore, the lamp 8 is off.

Next, when a commercial power outage occurs, charging to the storage battery 5 is stopped, and at the same time, the relay 6 is de-energized and its normally closed contact 7 is stopped.
is closed, the lamps 8 are connected to both ends of the storage battery 5, the lamps 8 are turned on, and emergency lighting is provided.

In this manner, conventional emergency lighting systems detect and activate power outages.

However, power outages often occur during emergencies such as fire outbreaks, but in places that require emergency lighting, power outages and fire outbreaks do not necessarily occur at the same time; lighting is provided for
Even if a fire breaks out after that, the capacity of the storage battery 5 has already been used up, and it may not be possible to provide lighting for evacuating from the fire, which is inconvenient.

Therefore, an object of the present invention is to provide lighting for a certain period of time until the discharge of the storage battery is completed as usual in the event of a power outage, and at the same time, in the event of a fire occurring during a power outage, regardless of the provision of lighting due to the power outage alone. , and to provide sufficient lighting for a certain period of time for people to evacuate.

FIG. 2 shows an embodiment of the present invention. In FIG. 1, a storage battery 11 is newly connected to the output end of the power transformer 2 via a diode 9 and a current limiting resistor 10, and a storage battery 5 are connected to the lamp 8 via the other normally closed contact 12 of the relay 6 and the emergency detection contact 13 that closes when it detects fire, smoke, etc., and diodes 14 and 15 are used to prevent mutual interference. ing.

The operation of this device will be explained with reference to the time chart shown in FIG.

In a state of commercial power supply, both storage batteries 5 and 11 are in a charging state, and contacts 7. Both contacts 12 and 13 are open, and lamp 8 is off.

Here, when a power outage occurs at time t1, the relay becomes inactive and contacts 7 and 12 are closed ONL, as shown in connection 42, and the storage battery 5 and lamp 8 are connected by contact 7, and lamp 8 is connected as shown in 2. It lights up and the time T1 changes according to the power capacity of the storage battery 5.
It remains lit only.

At this time, the contact 12 is also closed, but the contact 13 is open, and the storage battery 11 is not connected to the lamp 8.

When a fire occurs at time t2 after time T1 has elapsed and lamp 8 has gone out, this is sensed and contact 13 closes.
Since the contact point 12 is closed, the storage battery 11 is connected to the lamp 8, and the lamp 8 is turned on again and remains lit for a predetermined necessary time T2 to evacuate people.

In addition, if a fire occurs at time t3 even though time T1 has not elapsed since the power outage, the supply of load current to lamp 8 is interrupted by the action of mutual interference prevention diodes 14, 15, etc. They complement each other well, and the lamp 80 continues to be lit until time T2 passes after time T1 has elapsed.

FIG. 4 shows another embodiment according to the present invention.
A normally closed contact 16 that interlocks with the contact 13 in the figure is installed in series with the contact 7, and the diodes 14 and 15 for preventing mutual interference are removed.The load lamp of the storage battery 5 is activated only by a power outage at the same time as a fire occurs. 8, the lamp 8 is switched on and off using only the storage battery 11, and the one shown in Figure 2 allows the lamp 8 to continue to be lit for T1+72 hours even if a fire occurs while the storage battery 5 is lighting the lamp 8. For,
The lights are kept on for T2 hours after a fire breaks out.

FIG. 5 shows still another embodiment of the present invention, 1
The storage battery 5 serves as a power source for both power outages and fire outbreaks to achieve the above-mentioned technical idea, and a normally closed time switch contact 17 is provided that opens after a certain period of time T1 has passed after energization. A series circuit is formed with the contact 7, and this series circuit is connected in parallel with the series circuit of the contacts 12 and 13, and this parallel circuit is interposed between the storage battery 5 and the lamp 8. The power capacity is T1+T for lamp 8.
This lamp was selected to be able to be lit for 2 hours, and the lamp 8 can be lit for a total of T□+T2 hours through the time switch contact 17 etc. for T1 hours after a power outage occurs, and through contact 13 for at least T2 hours after a fire occurs. It is said that

In these embodiments, a self-holding function may be added to the contact 13 so that even if the fire signal is removed immediately, the light remains lit for a period of time T2 after the fire occurs.

As described above, according to the emergency lighting device of the present invention, the inconveniences of the conventional example are eliminated with a simple configuration, and even if a fire occurs after a period of time has passed after a power outage, the emergency lighting device remains constant after the fire occurs. At that time, emergency light sources can be turned on to allow people to evacuate safely.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a conventional emergency lighting device, Fig. 2 is a circuit diagram of an embodiment of the present invention, Fig. 3 is a time chart for explaining its operation, and Figs. 4 and 5. is a circuit diagram of another embodiment of the present invention. 5...Storage battery for power outage, 6...Relay for power outage detection, 7
...Relay normally closed contact for detecting power outage, 8...Emergency light source lamp, 11...Storage battery for use in case of fire, 12...Relay normally closed contact for detecting power outage, 13...Room for fire detection indirect point.

Claims (1)

[Scope of Claims] 1. A first contact that closes during a power outage between a first storage battery serving as an emergency power source for power outages and an emergency light source, and preventing current from flowing into the first storage battery in the event of a fire. A series circuit is connected between the second storage battery, which serves as an emergency power source in the event of a fire, and the emergency light source, and a second contact that closes in the event of a power outage and a second contact that closes in the event of a fire. Emergency lighting equipment connected in series circuit with 3 contacts. 2. Between the storage battery that serves as an emergency power source for power outages and fires, and the emergency light source, a first contact that closes during a power outage and a second contact that opens after a certain period of time after the power outage are connected in series. An emergency lighting device in which a series circuit of a third contact that closes in the event of a power outage and a fourth contact that closes in the event of a fire is connected in parallel to the series circuit of the first and second contacts. .