JP7263910B2 - guide light device - Google Patents

Description

The present invention relates to a guide light device.

Patent Document 1 discloses an evacuation guidance device that includes a storage battery, a xenon flashing unit connected to the storage battery via a switch, an audio output unit connected in parallel with the xenon flashing unit, and a control unit. there is The control unit turns on the switch to connect the xenon flashing unit and the audio output unit to the storage battery in an emergency upon receiving a fire alarm signal from the fire alarm equipment. Immediately after receiving the fire alarm signal, the control section operates the xenon flashing section and the audio output section using the storage battery as the power source. The control unit stops the operation of the xenon blinking unit after a predetermined period of time, and allows only the sound output unit to continue operating. As a result, the required operation time of the audio output unit in an emergency can be ensured.

JP-A-10-241457

Consider a case where the flashing device and the voice output unit share a battery in the guide light device and the voice output unit is not connected. In this case, if the operation of the flashing device is stopped after a predetermined time as in Patent Document 1, the battery capacity is conserved. In other words, the operation of the flashing device stops even though it can still continue to operate. This goes against the idea that it is better to continue the blinking operation as much as possible in the evacuation guidance system.

SUMMARY OF THE INVENTION An object of the present invention is to provide a guide light device capable of effectively utilizing battery capacity.

A guide light device according to the present invention comprises a light source, a flashing circuit for flashing the light source, a battery for supplying operating power to the flashing circuit, and a power supply from the battery to a voice output unit for emitting a voice prompting evacuation. If there is no power supply to the sound output unit, the blinking circuit causes the light source to blink until the battery voltage reaches the lower limit voltage at which the operating power can be supplied to the blinking circuit. If power is supplied to the audio output unit, continue to output the audio to the audio output unit until the voltage of the battery reaches the lower limit voltage at which operating power can be supplied to the audio output unit. and by stopping the blinking circuit before the audio output unit, the light source blinks longer when power is not supplied to the audio output unit than when power is supplied to the audio output unit. and a control unit that causes the

In the guide light device according to the present invention, the control unit determines whether power is supplied to the audio output unit from the battery, and when the audio output unit is not connected, the light source is set longer than when the audio output unit is connected. blink. Therefore, the battery capacity can be effectively used.

1 is a perspective view of a guide light device according to Embodiment 1; FIG. FIG. 4 is a perspective view of a guide light device according to a modified example of Embodiment 1; 1 is an exploded perspective view of a guide light device; FIG. It is a circuit block diagram of a guide light device. It is a figure explaining the detection method of the presence or absence of connection of an audio|voice output part. It is a figure explaining an output current detection part and an input current detection part. FIG. 4 is a diagram showing current waveforms and voltage waveforms of the guide light device; It is a figure explaining the model of a guide light apparatus. 5 is a time chart showing the operation of the guide light device of model D; 5 is a time chart showing the operation of the guide light device of model C; 5 is a time chart showing the operation of the guide light device of model B; 5 is a time chart showing the operation of the guide light device of model A; 6 is a time chart showing the operation of the guide light device according to the comparative example;

A guide light device according to an embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the same or corresponding components, and repetition of description may be omitted.

Embodiment 1.
FIG. 1 is a perspective view of a guide light device 110 according to Embodiment 1. FIG. The guide light device 110 has a second light source 4 that blinks when there is an abnormality. In the following, abnormal state indicates a state in which the guide light device 120 receives a fire signal that reports a fire. On the other hand, it indicates a state in which no fire signal is normally received.

The guide light device 120 includes a main body 1 , a display panel 2 , a second light source cover 3 , a second light source 4 and a main body cover 7 . A body cover 7 covers the body 1 . Further, the body cover 7 is provided with an opening through which the display panel 2 is exposed. The display panel 2 is provided with guidance display. The display panel 2 indicates the location of the evacuation exit or the direction of evacuation.

A second light source 4 is provided on the lower surface of the main body 1 . The second light source 4 is covered with the second light source cover 3 . The second light source 4 is, for example, a lamp that emits a large amount of light in a short period of time. The second light source 4 is a module composed of, for example, an LED. The second light source 4 may be a xenon lamp.

FIG. 2 is a perspective view of a guide light device 120 different from that of the first embodiment. FIG. 3 is an exploded perspective view of the guide light device 120. FIG. The guide light device 120 is different from the guide light device 110 in that it includes a speaker 8 that emits a sound prompting evacuation in the event of an emergency. The guide light device 120 is a voice addition flashing guide light. In the guide light device 120 , the body cover 7 is provided with a speaker hole 7 a at a position facing the speaker 8 .

The body 1 accommodates a lighting circuit 11a, a battery 13a, a speaker 8, a battery 13b, a shared circuit 11b, a blinking circuit 14 and an audio circuit 15. FIG. A first light source 12 is provided above the display panel 2 . The first light source 12 illuminates the display panel 2 during regular use and during emergencies. Here, a state in which power is supplied from the commercial power source 10 is shown during regular use. Also, an emergency indicates a power failure state in which there is no power supply from the commercial power supply 10 .

The structure of the guide light device 110 differs from that of the guide light device 120 in that the audio circuit 15 and the speaker 8 are not provided. Other circuit configurations are the same as those of the guide light device 120 . The same control unit 112b is used in the guide light devices 110 and 120. As shown in FIG. Further, since the guide light device 110 does not include the sound output unit 25, it is smaller than the guide light device 120. FIG.

FIG. 4 is a circuit block diagram of the guide light device 120. As shown in FIG. The lighting circuit 11a has a charging circuit 111a and a control section 112a. A commercial power supply 10 and a battery 13a are connected to the lighting circuit 11a. The commercial power source 10 is, for example, an AC power source. The charging circuit 111a is supplied with power from the commercial power source 10 during normal use to charge the battery 13a. The first light source 12 is supplied with electric power from the commercial power source 10 through the charging circuit 111a during normal use, and lights up. In addition, the first light source 12 is powered by the battery 13a in an emergency and lights up.

The controller 112a controls the charging circuit 111a. The control unit 112a includes, for example, a microcomputer. The control unit 112a is supplied with power from the commercial power source 10 and operates during normal use. Also, the control unit 112a operates by being supplied with power from the battery 13a in an emergency.

The shared circuit 11b has a charging circuit 111b, a control section 112b and a booster circuit 114b. Also, the commercial power supply 10, the battery 13b and the fire alarm unit 200 are connected to the shared circuit 11b. The charging circuit 111b is supplied with power from the commercial power source 10 during regular use to charge the battery 13b. The battery 13b is, for example, a storage battery.

A blinking circuit 14, an audio circuit 15, and a smoke feeling power supply circuit 16 are connected to the shared circuit 11b. The blinking circuit 14 blinks the second light source 4 . Audio circuit 15 is connected to speaker 8 . The voice circuit 15 causes the speaker 8 to output voice prompting evacuation. This sound is also called a guiding sound. The audio circuit 15 and the speaker 8 constitute an audio output section 25 . The smoke sensing power supply circuit 16 is connected to the smoke sensor 6 . The smoke sense power supply circuit 16 operates the smoke sensor 6 . The smoke feeling power supply circuit 16 may transmit the detection signal from the smoke sensor 6 to the control section 112b.

The battery 13b supplies operating power to the flashing circuit 14 in the event of an abnormality. The flashing circuit 14 boosts the voltage of the battery 13b with a booster circuit 14b provided therein. Thereby, the blinking circuit 14 generates a voltage for blinking the second light source 4 .

The booster circuit 114b is a power supply circuit that receives power from the battery 13b in an abnormal state and generates operating power for the audio circuit 15 and the smoke feeling power supply circuit 16 . The booster circuit 114b boosts the voltage of the battery 13b to 24V, for example. The voice output unit 25 receives power from the booster circuit 114b and emits a voice prompting evacuation. The smoke feeling power supply circuit 16 operates by being supplied with power from the power supply circuit 110b. In this way, the blinking circuit 14, the sound circuit 15, and the smoke feeling power supply circuit 16 are supplied with power from the battery 13b via the shared circuit 11b in the event of an abnormality.

The control unit 112b controls the charging circuit 111b, the booster circuit 114b, the blinking circuit 14, the booster circuit 14b, the sound circuit 15, and the smoke feeling power supply circuit 16. FIG. The control unit 112b includes, for example, a microcomputer. The control unit 112b is supplied with power from the commercial power source 10 via the charging circuit 111b during normal use. Also, the control unit 112b operates by being supplied with power from the battery 13b in an emergency.

The controller 112b controls the charging circuit 111b to charge the battery 13b. Further, the control unit 112b controls on/off of the switching element included in the booster circuit 114b to control the output voltage of the booster circuit 114b. Further, the control unit 112b controls on/off of the switching element included in the booster circuit 14b to control the output voltage of the booster circuit 14b. Up to this point, it is assumed that the booster circuit 114b is a circuit common to the audio circuit 15 and the smoke feeling power supply circuit 16. FIG. Alternatively, the sound circuit 15 and the smoke feeling power supply circuit 16 may each have a booster circuit without using the booster circuit 114b in common.

A fire alarm unit 200 is connected to the control unit 112b. The fire alarm unit 200 has a fire detection unit 201 , a fire alarm device 202 and a signal device 203 for guide lights. A fire detection unit 201 detects a fire. The guide light signaling device 203 receives a fire detection signal from the fire detection unit 201 via the fire alarm device 202 . The guide light signaling device 203 transmits a fire signal for reporting a fire to the control unit 112b in response to the detection signal.

Upon receiving the fire signal, the control unit 112b switches the power supply of the shared circuit 11b and the control unit 112b from the commercial power source 10 to the battery 13b. In addition, the control section 112b operates the blinking circuit 14 and the sound circuit 15 according to the fire signal.

In this way, the guide light device 120 operates by being supplied with power from the commercial power source 10 in normal times, and by being supplied with power by the batteries 13a and 13b in an abnormal state. By sharing the battery 13b between the flashing circuit 14 and the audio circuit 15, the number of parts of the guide light device 120 can be reduced. Further, by sharing the shared circuit 11b between the blinking circuit 14 and the sound circuit 15, the number of parts of the guide light device 120 can be further reduced.

Also, unlike the guide light device 110, the audio output unit 25 may not be provided. The control unit 112b determines whether or not the audio output unit 25 is connected to the shared circuit 11b. The control unit 112b changes the blinking duration of the second light source 4 according to the determination result.

FIG. 5 is a diagram illustrating a method of detecting whether or not the audio output unit 25 is connected. The guide light device 120 includes an output current detector 115b and an input current detector 113b. FIG. 6 is a diagram illustrating the output current detector 115b and the input current detector 113b. The output current detection unit 115b is a first detection resistor R1 provided in a first wiring 115a that supplies power from the booster circuit 114b to the audio output unit 25. FIG. The input current detector 113b is a second detection resistor R2 connected to the output terminal of the battery 13b. A second detection resistor R2 is provided on a second wiring 113a that connects the battery 13b and the flashing circuit 14 together.

FIG. 7 is a diagram showing current waveforms and voltage waveforms of the guide light devices 110 and 120. FIG. The output current detection unit 115b converts the current flowing through the first wiring 115a into a voltage applied to the first detection resistor R1 and detects it. When the audio output section 25 is not connected, the current Is detected by the first detection resistor R1 is zero. Further, when the audio output section 25 is connected, the current supplied from the booster circuit 114b to the audio output section 25 is detected as the detection current Is. Therefore, the control unit 112b can determine that the audio output unit 25 is connected when the detected current Is of the output current detection unit 115b is greater than zero. In this manner, the control unit 112b can determine whether power is being supplied from the battery 13b to the audio output unit 25 based on the detected current Is.

Here, if the guide light device 120 is not provided with an audio output function, the audio circuit 15 need not be provided and the speaker 8 need not be provided. In such a configuration, when the audio circuit 15 is operated with no load, the detected current Is is no longer zero. However, since the speaker 8 is not operated in this case as well, the detection current Is is smaller than when the speaker 8 is operated. Therefore, the control section 112b can determine that power is being supplied from the battery 13b to the speaker 8 when the current Is detected by the output current detection section 115b is greater than a predetermined value. In addition, when the audio circuit 15 is provided and the speaker 8 is not provided, the audio circuit 15 may not be operated at all. In this case, power consumption can be suppressed.

Since the output current detection unit 115b directly detects the current flowing from the booster circuit 114b to the audio output unit 25, it is possible to accurately detect whether or not the audio output unit 25 is connected. Further, similarly to the flashing circuit 14, power may be supplied directly from the battery 13b to the audio output section 25 without going through the booster circuit 114b. In this case as well, the presence or absence of the audio output section 25 can be determined from the current flowing through the wiring that supplies power from the shared circuit 11b to the audio output section 25 .

Further, the input current detection unit 113b converts the current flowing through the second wiring 113a into a voltage Vbat applied to the second detection resistor R2 and detects it. That is, the input current detector 113b detects the discharge current of the battery 13b. When the audio output unit 25 is connected, the discharge current from the battery 13b becomes larger than when there is no connection. That is, the current Ibat detected by the second detection resistor R2 is larger when the audio output section 25 is connected than when it is not connected. The control unit 112b determines that power is supplied from the battery 13b to the audio output unit 25 when the current Ibat detected by the input current detection unit 113b is greater than a predetermined value.

Further, the control unit 112b may determine whether power is being supplied from the battery 13b to the audio output unit 25 from the current waveform or voltage waveform of the second wiring 113a. As shown in the portions surrounded by frames 41 and 42 in FIG. 7, when the audio output section 25 is connected, the current waveform and voltage waveform of the second wiring 113a are distorted or skipped. The control unit 112b may determine whether or not the audio output unit 25 is connected based on the presence or absence of distortion or skipping in the current waveform or voltage waveform.

The control unit 112b stores, for example, a current waveform or voltage waveform during audio output and a current waveform or voltage waveform when no audio output is performed. The control unit 112b can determine whether power is supplied from the battery 13b to the audio output unit 25 by comparing the current waveform or voltage waveform of the second wiring 113a with the stored waveform.

Alternatively, only one of the output current detection section 115b and the input current detection section 113b may be provided. Further, the control unit 112b may determine whether power is supplied to the audio output unit 25 from the current waveform or voltage waveform of the first wiring 115a. Furthermore, the control unit 112b may detect how the battery voltage drops, and determine whether power is being supplied to the audio output unit 25 or not. The way the battery voltage drops is, for example, the amount of change in the battery voltage per hour. From the above, the control unit 112b can determine whether or not the appliance is a model in which the speaker 8 is incorporated.

When a xenon lamp is used as the second light source 4, the power consumption of the flicker circuit 14 is generally much higher than the power consumption of the sound circuit 15. FIG. On the other hand, when an LED is used for the second light source 4, the difference between the power consumption of the blinking circuit 14 and the power consumption of the audio circuit 15 is small. Therefore, the peak value or waveform of the current can be clearly distinguished depending on whether power is supplied from the battery 13b to the audio output unit 25 or not. Therefore, it is possible to accurately determine whether or not the audio output unit 25 is connected.

FIG. 8 is a diagram for explaining the model of the guide light device. There are generally four types of guide light devices, A to D, depending on the presence or absence of sound and the difference in operation time. Model A has a flashing duration of 25 minutes and a voice duration of 75 minutes. Model B has a duration of blinking and a duration of sound of both 75 minutes. Model C has a flashing duration of 25 minutes and no sound output. Model D has a flashing duration of 75 minutes and no sound output. Models A and B are voice blinking models, and models C and D are blinking models.

Note that JIL5502 of the Japan Lighting Manufacturers Association standard specifies technical standards for equipment for guide light fixtures and evacuation guide light systems. According to this standard, the operating time of the flashing device is of two types: 25 minutes or 75 minutes. In addition, the operating time of the guiding sound device is only 75 minutes.

The guide light device 120 corresponds to model A or B. A model obtained by removing the sound output unit 25 from the guide light device 120 and the guide light device 110 correspond to model C or D.

Next, operations of the guide light devices 110 and 120 according to this embodiment will be described. First, as an example of the operation of the guide light device 110, the operation of the model D will be described. FIG. 9 is a time chart showing the operation of the guide light device 110 of model D. FIG. The fire signal shown in FIG. 9 indicates a state in which the fire signal is not received at High, and a state in which the fire signal is received at Low. For the second light source, High indicates a flashing state, and Low indicates an extinguished state. As for the voice output, High indicates a vocalization state in which voice is output, and Low indicates a silent state in which voice is not output.

Before time t0, charging circuit 111b receives commercial power supply 10 and charges battery 13b. Also, the blinking circuit 14 is in a standby state, and the second light source 4 is in an off state. When the fire alarm unit 200 detects a fire, it transmits a fire signal to the control unit 112b. Upon receiving the fire signal at time t0, the control unit 112b starts supplying power from the battery 13b to the flashing circuit 14. FIG. Thereby, the second light source 4 starts blinking. The battery voltage drops with blinking. The flashing of the second light source 4 continues for at least 75 minutes, which is a predetermined time. The time 75 minutes after time t0 is assumed to be time t2.

Immediately after time t0, control unit 112b determines whether power is being supplied from battery 13b to audio output unit 25 using output current detection unit 115b or input current detection unit 113b. The determination as to whether power is supplied to the audio output unit 25 may be performed at any time after time t0 and before time t2.

In the guidance light device 110, it is determined that power is not supplied to the audio output section 25. FIG. At this time, there is no need to supply power to the audio output unit 25 from the battery 13b. Therefore, the control unit 112b continues blinking as much as possible. That is, the blinking circuit 14 continues blinking the second light source 4 until the voltage of the battery 13b falls below the discharge reference voltage and the operation becomes impossible. The flashing circuit 14 is designed so that when the voltage of the battery 13b is the discharge reference voltage, the second light source 4 can be flashed with an output voltage higher than a specified value.

After the voltage of the battery 13b falls below the discharge reference voltage, the flashing circuit 14 stops at time t5. Therefore, the second light source 4 stops blinking. The flashing circuit 14 may continue flashing of the second light source 4 until the voltage of the battery 13b reaches the lower limit voltage at which the operating power can be supplied to the flashing circuit 14 . As a result, the blinking can be extended by the extension time tβ after the time t2.

Next, the operation of model C will be described. FIG. 10 is a time chart showing the operation of the guide light device 110 of model C. As shown in FIG. The operation up to time t0 is the same as model D. Upon receiving the fire signal at time t0, the control unit 112b starts supplying power from the shared circuit 11b to the blinking circuit . Thereby, the second light source 4 starts blinking. The flashing of the second light source 4 continues for at least 25 minutes, which is a predetermined time. The time 25 minutes after time t0 is assumed to be time t1.

Immediately after time t0, the control unit 112b determines whether power is supplied to the audio output unit 25 or not. The determination of whether or not the audio output unit 25 is connected may be performed at any time after time t0 and before time t1. In the guidance light device 110, it is determined that power is not supplied to the audio output section 25. FIG. Therefore, the control unit 112b continues blinking as much as possible. The blinking circuit 14 continues blinking the second light source 4 as long as the battery 13b can be driven even after the voltage of the battery 13b drops below the discharge reference voltage. At time t5, the flashing circuit 14 stops and the second light source 4 stops flashing.

Next, as an example of the operation of the guide light device 120, the operation of the long-time rated model B will be described. FIG. 11 is a time chart showing the operation of the guide light device 120 of model B. FIG. Before time t0, the audio circuit 15 is in a standby state, the speaker 8 is in a non-operating state, the blinking circuit 14 is in a standby state, and the second light source 4 is in an off state.

Upon receiving the fire signal at time t0, the control unit 112b operates the blinking circuit 14 and the sound circuit 15. FIG. Thereby, the second light source 4 starts blinking. Also, the audio output unit 25 starts outputting the guidance sound. The battery voltage drops with the blinking and sound generation. The blinking of the second light source 4 and the utterance of the speaker 8 are continued for at least 75 minutes, which is a predetermined time. The time 75 minutes after time t0 is assumed to be time t2. In this embodiment, at time t2, the voltage of battery 13b exceeds the discharge reference voltage.

Immediately after time t0, control unit 112b determines whether power is being supplied from battery 13b to audio output unit 25 or not. In the guide light device 120, it is determined that power is being supplied from the battery 13b to the audio output section 25. FIG. Next, the controller 112b detects the voltage of the battery 13b. The control unit 112b calculates the extension time tα of blinking of the second light source 4 from the time t2 according to the voltage of the battery 13b. The extended time tα of the blinking operation varies depending on the voltage of the battery 13b. The detection of the voltage of the battery 13b and the calculation of the extension time tα may be performed at any time after the time t0 and before the time t2.

The control unit 112b continues blinking of the second light source 4 for the extension time tα from time t2, and then stops blinking of the second light source 4 at time t5. That is, the power supply from the battery 13b to the flashing circuit 14 stops at time t5.

Even after this, the control unit 112b continues the audio output. After the voltage of the battery 13b falls below the discharge reference voltage, the audio output unit 25 ends audio output at time t6. The audio output unit 25 continues to output audio until the voltage of the battery 13b reaches the lower limit voltage at which operating power can be supplied to the audio output unit 25 .

Next, as another example of the operation of the guide light device 120, the operation of model A will be described. FIG. 12 is a time chart showing the operation of the guide light device 120 of model A. FIG. The state before time t0 is the same as model B.

Upon receiving the fire signal at time t0, the control unit 112b operates the blinking circuit 14 and the sound circuit 15. FIG. The flashing of the second light source 4 and the utterance of the speaker 8 are continued for 25 minutes, which is a predetermined time. The time 25 minutes after time t0 is assumed to be time t1.

Immediately after time t0, control unit 112b determines whether power is being supplied from battery 13b to audio output unit 25 or not. In the guide light device 120, it is determined that power is being supplied from the battery 13b to the audio output section 25. FIG. Next, the controller 112b detects the voltage of the battery 13b. The control unit 112b calculates the extension time tα of blinking of the second light source 4 from the time t1 according to the voltage of the battery 13b. The detection of the voltage of the battery 13b and the calculation of the extension time tα may be performed at any time after the time t0 and before the time t1. The control unit 112b continues blinking of the second light source 4 for the extension time tα from time t1, and then stops blinking of the second light source 4 at time t5.

Even after this, the control unit 112b continues the voice output. After the voltage of the battery 13b falls below the discharge reference voltage, the audio output unit 25 ends audio output at time t6. Note that the time t6 is a time later than the time t2, which is 75 minutes after the time t0. At time t2, the voltage of battery 13b significantly exceeds the discharge reference voltage.

Next, the effects of this embodiment will be described. As a comparative example of the present embodiment, when the duration of blinking and sound is set to the same length as the specified time of 25 minutes or 75 minutes, for example, when the battery is slightly degraded, the specified time may be exceeded due to part variations. may fall below. Also, in the evacuation guidance system, it is preferable that the blinking and sound durations are long.

As another comparative example, it is conceivable to continue flashing and sound generation until the battery voltage drops and operation becomes impossible. FIG. 13 is a time chart showing the operation of the guide light device according to the comparative example. Assume that the guide light device according to the comparative example is model B. FIG.

When the guide light device according to the comparative example receives a fire signal that notifies of a fire at time t0, the second light source starts flashing light emission. Also, the speaker utters a guiding sound. The flashing of the second light source and the sounding of the speaker are continued for 75 minutes, which is a predetermined time. The time 75 minutes after time t0 is assumed to be time t2. The guide light device must operate at a battery voltage equal to or higher than the discharge reference voltage until time t2. After the battery voltage drops below the discharge reference voltage, at time t5, the guide light device stops blinking and producing sound.

In the comparative example shown in FIG. 13, the operation continues until the battery voltage drops below the discharge reference voltage. Here, when the second light source is a xenon lamp, the power consumption of the blinking circuit is, for example, 9W, and the power consumption of the audio circuit is, for example, 3W. The power consumption of the blinking circuit is approximately three times the power consumption of the audio circuit. At this time, a large amount of electric power from the battery is consumed by the flashing circuit, and for example, when the battery deteriorates slightly, there is a possibility that the required operating time for continuing the operation cannot be secured.

In particular, in the model A, there is a possibility that the sound cannot be continued for 75 minutes even if the blinking duration is secured. Also, if smoke fills up during a fire, the flashing light source may become difficult to see. Therefore, in some cases, it is preferable to give priority to guidance to an evacuation exit using guidance sound over flashing.

On the other hand, in the control unit 112b of the present embodiment, when power is supplied from the battery 13b to the audio output unit 25, the output of the audio by the audio output unit 25 rather than the blinking of the second light source 4 by the blinking circuit 14 continue for a long time. Thus, it is possible to give priority to guidance to the evacuation exit by the guidance sound over flashing.

Further, in order to continue the operation of the audio output unit 25 for a certain period of time, the control unit 112b calculates the time during which both the blinking circuit 14 and the audio circuit 15 can be operated from the voltage of the battery 13b at time t1 or t2. do. According to this calculation result, the control unit 112b stops the flashing circuit 14 before the audio circuit 15. FIG. As a result, a certain operating time of the audio circuit 15 can be ensured.

Note that especially in model B, if the blinking of the second light source 4 and the sounding of the speaker 8 are performed in parallel, the voltage of the battery 13b cannot be maintained above the discharge reference voltage until time t2 due to deterioration of the battery 13b. There is In contrast, in the present embodiment, control unit 112b determines whether power is supplied to audio output unit 25 and detects the voltage of battery 13b before predetermined time t2. Thereby, the control unit 112b may calculate the extension time tα of blinking of the second light source 4 according to the voltage of the battery 13b so that the operation of the sound output unit 25 can be continued as long as possible after the time t2. . Also, the control unit 112b may always detect the battery voltage including before the time t0.

Further, in this embodiment, the voice circuit 15 continues to speak until the voltage of the battery 13b drops and becomes inoperable. For this reason, it is possible to increase the guidance effect by making the sound generation time as long as possible.

Here, when the control for prioritizing the audio output as shown in FIGS. 11 and 12 is performed in a model in which the audio output unit 25 is not provided, the blinking stops at time t5 while the battery capacity remains. In other words, the flashing operation stops before the battery voltage drops to the discharge reference voltage. Therefore, battery capacity is wasted. In addition, if the state of shallow discharge continues, the performance of the battery may deteriorate due to the memory effect of the battery.

On the other hand, in this embodiment, the control unit 112b determines whether or not the audio output unit 25 is connected. According to the determination result, the blinking continues without considering the power supply to the audio output unit 25 in the model to which the audio output unit 25 is not connected. That is, the control unit 112b blinks the second light source 4 longer when the audio output unit 25 is not supplied with power than when the audio output unit 25 is supplied with power. Therefore, as shown in FIGS. 9 and 10, the extension time tβ of blinking from times t1 and t2 can be made longer than the extension time tα in FIGS. Therefore, even with a model that only flashes, the battery capacity can be effectively used and a long operating time can be ensured. Also, the memory effect of the battery can be suppressed.

Note that, in order to share parts, the same common circuit 11b is often used for the voice blinking model and the blinking model. This is because the guide light devices 110 and 120 are special fixtures and produced in small numbers. Shared circuits 11b are generally of two types, one rated for 25 minutes and one rated for 75 minutes. Therefore, in order to change the control method depending on the presence or absence of the audio output section 25, it is preferable that the control section 112b determines whether or not the audio output section 25 is provided.

Further, it is conceivable to provide a switch in the guide light device, and to set which model of the guide light device is a flashing model or a voice flashing model by the switch at the time of assembly. However, if the setting is incorrect, the default operation cannot be realized in an emergency.

On the other hand, in the present embodiment, the control unit 112b automatically distinguishes between the models and changes the control method. Therefore, the predetermined operation can be reliably realized. In addition, it is possible to prevent the assembling process from becoming complicated.

The technical features described in this embodiment may be used in combination as appropriate.

1 main body 2 display panel 3 second light source cover 4 second light source 6 smoke sensor 7 main body cover 7a speaker hole 8 speaker 10 commercial power supply 11a lighting circuit 11b shared circuit 12 second 1 light source 13a battery 13b battery 14 blinking circuit 15 sound circuit 16 smoke feeling power supply circuit 25 sound output unit 110 guide light device 110a power supply circuit 111a charging circuit 111b charging circuit 112a control unit 112b Control unit 113a Second wiring 113b Input current detection unit 114b Booster circuit 115a First wiring 115b Output current detection unit 120 Guide light device 200 Fire alarm unit 201 Fire detection unit 202 Fire alarm equipment 203 Signal device for guidance light, R1 first detection resistor, R2 second detection resistor

Claims (8)

a light source;
a flashing circuit for flashing the light source;
a battery that supplies operating power to the flashing circuit;
It is determined whether power is supplied from the battery to an audio output unit that emits a sound prompting evacuation, and if power is not supplied to the audio output unit, the voltage of the battery supplies operating power to the flashing circuit. The blinking circuit continues to blink the light source until the voltage reaches the lower limit voltage, and when power is supplied to the audio output unit, the voltage of the battery can supply operating power to the audio output unit. By causing the audio output unit to continue outputting the audio until the lower limit voltage is reached, and stopping the flashing circuit before the audio output unit, when there is no power supply to the audio output unit, the audio a control unit that blinks the light source longer than when there is power supply to the output unit;
A guide light device comprising : a power supply circuit that receives power from the battery and generates operating power for the audio output unit;
an output current detection unit that detects current flowing from the power supply circuit to a first wiring that supplies power to the audio output unit;
with
2. The control unit determines that power is supplied from the battery to the audio output unit when the current detected by the output current detection unit is larger than a predetermined value. A guide light device as described. 3. The guide light device according to claim 2 , wherein the output current detector is a first detection resistor provided on the first wiring. An input current detection unit that detects the discharge current of the battery,
2. The control unit determines that power is supplied from the battery to the audio output unit when the current detected by the input current detection unit is larger than a predetermined value. 4. The guide light device according to any one of 3 . 5. The guide light device according to claim 4 , wherein the input current detector is a second detection resistor connected to the output terminal of the battery. 2. The control unit determines whether or not power is supplied from the battery to the audio output unit from a current waveform or a voltage waveform of a second wiring connecting the battery and the flashing circuit. 6. The guide light device according to any one of items 1 to 5 . When power is supplied from the battery to the audio output unit, the control unit operates the flashing circuit and the audio output unit in response to a fire signal indicating a fire so that the light source is flashed by the flashing circuit. 7. The guide light device according to any one of claims 1 to 6, wherein the output of the voice by the voice output unit is continued for a long time. When power is supplied from the battery to the audio output unit, the control unit detects the voltage of the battery and calculates an extension time for blinking of the light source according to the voltage of the battery. The guide light device according to claim 7 .

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