JPH0242043Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a guide light device that is turned on in the event of a fire to provide illumination and display for evacuation guidance.

[Background technology]

FIG. 1 shows a circuit diagram of a conventional guide light device. In the figure, 1 is a blinking type guide light with a built-in xenon lamp, and 2 is a signal device connected to a transfer terminal 3 in order to link the guide light 1 with an automatic fire alarm. Further, 4 is a commercial power source, and 5 is a signal power source for feeding power to the signal device 2. In the blinking guide light 1 with a built-in xenon lamp, A is an emergency lighting circuit consisting of a high frequency inverter, etc.;
is a xenon flashing emergency lighting circuit, C is a fluorescent lamp,
D is a commercial lighting circuit consisting of a ballast, etc., and E is a xenon lamp. Also, T ₁ and T ₂ are commercial power supply 4
The output is full-wave rectified by diode bridges D ₁ and D ₂ and charged to storage batteries B ₁ and B ₂ via resistors Ra and Rb. R ₁ is a relay excited by the output of the signal device 2, and γ ₁₁ is a normally closed contact of the relay R ₁ . Further, R ₂ is a relay excited by the output of the commercial power source 4, γ ₂₁ is a normally open contact of the relay R ₂ , and γ ₂₂ and γ ₂₃ are normally closed contacts of the relay R ₂ . Further, R ₃ is a relay excited by the output of the power transformer T ₃ , and γ ₃₁ and γ ₃₂ are normally open contacts of the relay R ₃ .

When the commercial power supply 4 is energized here and the automatic fire alarm is reporting a fire, the transfer contact 3 is turned off, the power to the relay R ₃ is cut off, and the normally open contact of the relay R ₃ is turned off. γ ₃₁ and γ ₃₂ are turned off. Therefore, relay R ₁ is deenergized and normally closed contact γ ₁₁
turns on, and the xenon flashing emergency lighting circuit B
Power from the storage battery _B2 is supplied to the inverter oscillation unit INV in the xenon flashing emergency lighting circuit B as shown in FIG. The high-frequency high voltage generated in this inverter oscillation unit INV is rectified by a voltage doubler rectifier circuit WD, and charged into a large-capacity capacitor Co. The charging voltage of the capacitor Co is applied across the xenon lamp E,
The xenon lamp E emits flash light by the trigger operation of the trigger circuit TG. In addition, when the switch SW ₁ is turned on when the commercial power supply 4 is energized, the fluorescent lamp C turns on the normally open contact γ ₂₁ of the relay R ₂ and turns off the normally closed contacts γ ₂₂ and γ ₂₃ , so that the fluorescent lamp C cannot be used for commercial lighting. Circuit D
When the commercial power supply 4 is out of power, the normally open contact γ ₂₁ of relay R ₂ turns off and the normally closed contacts γ ₂₂ and γ ₂₃ turn on, so the emergency lighting circuit A 40% of the time.

However, in such a conventional example, when a fire occurs and the commercial power supply is on, the storage battery B ₂ enters a floating charging state, the power transformer T ₂ becomes overloaded, and the life of the storage battery B ₂ is shortened. There was a problem. Furthermore, the emergency lighting circuit B includes a trigger circuit TG as shown in FIG.
A high voltage is generated by the There was a problem in that a large noise voltage was generated between the a and b terminals, causing noise to surrounding machinery and equipment and causing malfunctions.

[Purpose of invention]

The present invention has been developed in view of the above-mentioned points, and is intended to prevent the floating use state of storage batteries in guide light devices that are operated by other signals regardless of the presence or absence of commercial power supply, and to prevent the use of commercial power supply. The purpose of this is to prevent noise from leaking to the outside.

[Disclosure of invention]

The configuration of the present invention will be described below with reference to the illustrated embodiment. As shown in the embodiment in _FIG . A normally closed contact γ ₁₁ is turned on when an abnormality other than the above occurs and connects _the emergency lighting circuit B including the inverter circuit and _the storage battery B ₂ . A normally open contact γ ₁₂ serving as a switch means for disconnecting from the power source 4 is provided. Both normally closed contact γ ₁₁ and normally open contact γ ₁₂ are contacts of relay R ₁ , and when normally closed contact γ ₁₁ is on, normally open contact γ ₁₂ is off, and when normally closed contact γ ₁₁ is off, it is a normally open contact. γ ₁₂ is turned on.
Other relays R ₂ , R ₃ and their contacts γ ₂₁ , γ ₂₂ ,
Regarding the configurations of γ ₂₃ , γ ₃₁ , γ ₃₂ , power transformers T ₁ to T ₃ , diode bridges D ₁ and D ₂ , emergency lighting circuit B to xenon lamp E, etc.,
This is the same as in the conventional example shown in FIGS. 1 and 2.

The operation of the embodiment shown in FIG. 3 will be explained below.
First, when there is no fire, the transmission terminal 3 from the automatic fire alarm is closed. In this state, when the switch SW ₂ is connected to the relay R ₃ side, the relay R ₃ is connected to the output of the power transformer T 3 via the resistor Rc and the transfer terminal ₃ . This energizes relay R ₃ and normally open contacts γ ₃₁ , γ ₃₂
is turned on. By turning on the normally open contact γ ₃₁ , the excitation current of the relay R ₃ is ensured, so
Even if switch SW ₂ is returned to the neutral position, relay R ₃
remains self-retained. Also, the normally open contact γ ₃₂
By turning on, the relay _R1 is excited by the signal power source 5, the normally closed contact _γ11 is turned off, and the normally open contact _γ12 is turned on. Therefore, storage battery B ₂
is not connected to the xenon blinking emergency lighting circuit B, and the xenon lamp E is not driven to blink. On the other hand, by turning on normally open contact γ ₁₂ , power transformer T ₂ , diode bridge D ₂ and current limiting resistor
The step-down rectifier circuit including Rb is connected to the commercial power supply 4,
A storage battery B ₂ is charged by a commercial power source 4. The next time a fire breaks out and transfer terminal 3 of the automatic fire alarm is turned off, or when the switch is turned off,
When SW ₂ is connected to the resistor Rc side, relay R ₃
is de-energized and the normally open contacts γ ₃₁ and γ ₃₂ are turned off. Therefore, relay _R1 is also deenergized,
Normally closed contact γ ₁₁ is turned on, and normally open contact γ ₁₂ is turned off.
By turning on normally closed contact г ₁₁ , storage battery B ₂
is connected to xenon flashing emergency lighting circuit B,
The xenon lamp E begins to emit flashes intermittently. Also, since the normally open contact γ ₁₂ is open at this time, the storage battery B ₂ is not used in a floating charging state, and therefore the power transformer T ₂
will not become overloaded or shorten the life of storage battery _B2 . Furthermore,
In the present invention, it is possible to prevent the high-voltage trigger pulse from the xenon blinking emergency lighting circuit B and the noise caused by the high-frequency high voltage from leaking into the line of the commercial power supply 4.

Next, in the embodiment of FIG. 3, when the commercial power supply 4 loses power or when the switch SW ₁ for power failure test is turned off, the excitation of the relay R ₂ is released, so the normally open contact γ ₂₁ of the relay R ₂ is off, and the normally closed contacts γ ₂₂ and γ ₂₃ are turned on, so the storage battery B ₁ is connected to the emergency lighting circuit A consisting of a high-frequency inverter, etc., and the output of this emergency lighting circuit A drives the fluorescent lamp C to turn on. It is something. Furthermore, when the commercial power supply 4 does not have a power outage, the relay R ₂ is energized and its normally open contact γ ₂₁ is turned on. Therefore, in this case, the fluorescent lamp C is driven to be turned on by the commercial lighting circuit D. It is something. Also, by turning off the normally closed contacts γ ₂₂ and γ ₂₃ of relay R ₂ , the emergency lighting circuit A is switched off from the storage battery.
It is separated from B ₁ and fluorescent lamp C.

In the embodiment shown in FIG. 4, the normally open contact γ ₁₂ of relay R ₁ is connected to the secondary output of power transformer T ₂ and the diode bridge.
An example is shown in which it is provided between D and ₂ . In this embodiment, since the normally open contact γ ₁₂ is provided on the secondary side of the step-down power transformer T ₂ , the withstand voltage of the normally open contact γ ₁₂ can be lowered. In the embodiment shown in FIG. 5, the normally closed contact γ ₁₁ and the normally open contact γ ₁₂ are combined into one switching contact γ ₁ . That is, in this embodiment, in non-fire situations, the relay R ₁ is energized, so the normally open side of the contact γ ₁ of the relay R ₁ is turned on, and the storage battery B ₂ is charged by the commercial power source 4. be. In the event of a fire, the relay
Since R ₁ is de-energized, contact γ ₁ of relay R ₁
The normally closed side is turned on, and storage battery B ₂ is connected to commercial power supply 4.
At the same time, a xenon blinking emergency lighting circuit B is activated by the charging voltage of the storage battery _B2 .

Note that as the abnormality detection signal for starting the operation of the xenon blinking emergency lighting circuit B, an earthquake detection signal, a smoke detection signal, or the like may be used in addition to the fire detection signal. Also, as a means of switching,
In addition to mechanical contacts γ ₁₁ , γ ₁₂ , it is also possible to use electronic switching elements.

[Effect of idea]

The present invention is constructed as described above, and includes a storage battery that is charged with a step-down rectified commercial power supply voltage, an inverter circuit, and an inverter circuit that is turned on at least when an abnormality other than a power outage occurs in the commercial power supply. switch means for connecting the storage battery to an emergency lighting circuit consisting of a discharge lamp that is driven to blink intermittently by the output of the switch; and switch means for disconnecting the storage battery from the commercial power supply when the switch means is on. This prevents the storage battery from being used in a floating charging state in the event of an abnormality other than a commercial power outage.
Therefore, there is an effect that the power transformer for charging the storage battery will not be overloaded and the life of the storage battery will not be shortened, and the high frequency and high voltage from the inverter oscillation part of the emergency lighting circuit will not be transmitted to the commercial power line. This has the effect of preventing noise from leaking to other devices, and preventing noise disturbances from being caused to surrounding equipment.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a conventional example, FIG. 2 is a circuit diagram of the same essential parts as above, FIG. 3 is a circuit diagram of an embodiment of the present invention, and FIG. 4 is a circuit diagram of another embodiment of the present invention. FIG. 5 is a circuit diagram of still another embodiment of the present invention. 4 is a commercial power source, B is an emergency lighting circuit, B ₂ is a storage battery, E is a xenon lamp, γ ₁₁ is a normally closed contact, γ ₁₂ is a normally open contact, and R ₁ is a relay.

Claims (1)

[Claims for Utility Model Registration] (1) A storage battery that is charged with a step-down rectified commercial power supply voltage, and an inverter circuit and the output of this inverter circuit that are turned on when an abnormality other than a power outage occurs in the commercial power supply. A switch means is provided for connecting the storage battery to an emergency lighting circuit comprising a discharge lamp which is driven to blink intermittently, and a switch means for disconnecting the storage battery from the commercial power source when the switch means is turned on. Guidance light device. (2) The guide light according to claim 1, wherein the discharge lamp that is driven to blink intermittently by the output of the inverter circuit is a xenon lamp.