JP2022054173A - Flashing device - Google Patents

Abstract

To provide a flashing unit that is simple and compact.SOLUTION: A flashing unit 25 is used for a guide lamp. The flashing unit 25 includes a lighting circuit 36 and a power supply source 37 to a smoke detector 23. The lighting circuit 36 flashes a flashing light source 30 using power supplied from a second battery 32. The power supply source 37 is connected in parallel to an output of the lighting circuit 36 to the flashing light source 30.SELECTED DRAWING: Figure 3

Description

An embodiment of the present invention relates to a blinking device used for an exit light.

Generally, the guide light is provided with a display board having a pictogram of a guidance display, and is configured to guide evacuation by illuminating the display board in an emergency such as a power failure, a fire, or an earthquake.

In addition, some guide lights are provided with a blinking lamp, and by blinking the blinking lamp in response to an operation signal output from an external signal device, more active evacuation guidance is possible. This type of guide light is required to have a function of coordinating with an external device such as a smoke detector. That is, since the smoke detector operates when the surrounding area is filled with smoke, it is required to stop the evacuation guidance by the blinking lamp when the smoke detector is activated.

A typical smoke detector operates under a constant voltage. Conventionally, a xenon discharge lamp has been used as the flashing lamp of the guide lamp. Therefore, in order to generate a high voltage pulse of kV order for its operation, a winding is used from the battery voltage of the guide lamp to generate a high voltage. It is configured to obtain, and if an additional winding is applied to the winding and the power of the smoke detector is taken, the circuit scale becomes large. In addition, when a separate power supply for the smoke detector is provided, it is inevitable that the number of parts will increase as the size of the device increases.

Japanese Unexamined Patent Publication No. 2012-155611

An object to be solved by the present invention is to provide a blinking device that is simple and can be miniaturized.

The flashing device of the embodiment is a flashing device used for an guide light. The blinking device includes a lighting circuit and a power supply source to an external device. The lighting circuit uses the power supplied by the battery to blink the solid-state light source. The power source is connected in parallel to the output of the lighting circuit to the solid-state light source.

According to the flashing device of the embodiment, simplification and miniaturization can be expected.

It is a perspective view of the guide light to which the blinking device which shows one Embodiment is applied. It is a block diagram of a part of the guide light of the same as above. It is a circuit block diagram of the blinking device of the same as above. (A) is an explanatory diagram showing an example of the output voltage from the lighting circuit of the flashing device of the same as above, and (b) is an explanatory diagram showing an example of the current of the solid-state light source of the flashing device of the same as above.

Hereinafter, one embodiment will be described with reference to FIGS. 1 to 4.

FIG. 1 shows the appearance of the guide light 10 which is a lighting device to which the blinking device is applied. The guide light 10 is installed on an installation surface such as a ceiling surface or a wall surface corresponding to an emergency exit of the facility. The guide light 10 is located on a housing 13 including a frame-shaped main body 11 and a front panel 12 attached to the front side of the main body 11, a display plate 14 provided on the front panel 12, and a lower surface side of the main body 11. It is provided with a blinking display unit 15, an audio output unit 16 provided on the front panel 12, a monitor unit 17 provided on the lower surface side of the main body unit 11, an operation confirmation switch 18, and the like.

The display board 14 displays a pictogram indicating a state in which a person is evacuating as a guidance display. The display board 14 is arranged in an opening provided in the front panel 12, and emits light by light from the back side. The blinking display unit 15 has a translucent cover protruding from the lower surface side of the main body portion 11, and light is emitted from the inner side to the outer side. The audio output unit 16 has a cover having a hole or the like through which audio passes, and is arranged in an opening provided in the front panel 12. The monitor unit 17 is arranged with an inspection switch, a plurality of monitor lamps for charging and a light source, and the like. As these monitor lamps, LEDs or the like having different emission colors are used. The operation confirmation switch 18 makes it possible to confirm whether or not the blinking display unit 15 and the voice output unit 16 operate by operation.

Then, the display board 14 of the guide light 10 lights and displays at all times and in an emergency (during a power failure and a fire). The blinking display unit 15 and the voice output unit 16 are always in a non-operating state, and in an emergency due to a fire, the blinking display unit 15 blinks and outputs a voice guiding evacuation guidance from the voice output unit 16 to further increase the number. It is configured to exert an evacuation guidance effect.

Next, FIG. 2 shows a block diagram of a part of the guide light 10. An external power source 20 such as a commercial power source, a signal device 22 that outputs a predetermined signal to the guide light 10, and a smoke detector 23 that is an external device are connected to the guide light 10. Another guide light 10 installed on the floor directly above the floor where the guide light 10 is installed may be further connected to the guide light 10.

The signal device 22 always outputs an operation signal (signal voltage) to the guide light 10 in conjunction with an emergency sensor installed in the facility, and stops the output of the operation signal in an emergency. In the present embodiment, the emergency sensor detects an emergency state, for example, an automatic fire alarm, and the signal device 22 outputs an operation signal (signal voltage) which is a fire alarm signal at all times during non-fire. It outputs to the guide light 10 and stops the output of the operation signal in the event of a fire.

The smoke detector 23 is installed, for example, on the ceiling side near the guide light 10. The smoke detector 23 operates at a predetermined operating voltage applied from the guide light 10 in the event of a fire (when the output of the operation signal from the signal device 22 to the guide light 10 is stopped), and guides a signal corresponding to the detection of smoke. Output to light 10.

The other guide lights 10 input a stop signal from the guide lights 10 on the immediately lower floor to stop the blinking operation and the voice operation.

Further, the guide light 10 includes a lighting unit (not shown) as a lighting device to which electric power is supplied from the external power source 20, and a blinking unit 25 as a blinking device which is an operating unit.

A lighting light source and a first battery are connected to the lighting unit. As the lighting light source, for example, a light emitting element such as an LED or a solid-state light source is used. For example, the lighting light source incidents light on the light guide plate arranged on the back side of the display plate 14 shown in FIG. 1, and illuminates the display plate 14 with the light emitted from the light guide plate to the display plate 14 to emit light. As the first battery, a rechargeable secondary battery is used.

The lighting unit includes a power conversion unit that converts the power of the external power source 20 or the first battery shown in FIG. 2 into a predetermined lighting power and supplies the power to the lighting light source, a charging circuit for charging the first battery, and electric power. It is equipped with a control unit that controls the conversion unit.

The lighting unit has a constant mode and an emergency mode. The constant mode is a mode when the electric power from the external power source 20 is input, and the lighting light source is turned on by the electric power from the external power source 20 and the first battery is charged. The emergency mode is a mode at the time of a power failure (when the power from the external power source 20 is cut off, that is, when the power from the external power source 20 is not input), and the lighting light source is turned on by the power of the first battery.

Further, the blinking unit 25 is connected to a blinking light source 30 as a solid-state light source as a load, an audio output circuit 31 as a load, and a second battery 32 as a battery. Further, the power from the external power source 20, the operation signal from the signal device 22, and the detection signal from the smoke detector 23 are input to the blinking unit 25, respectively.

A light emitting element such as an LED is used as the blinking light source 30. The blinking light source 30 is arranged inside the blinking display unit 15 (FIG. 1), and emits light to the outside through the blinking display unit 15 (FIG. 1). In the present embodiment, the blinking light source 30 has a plurality of light emitting elements connected in series and is driven by a predetermined constant voltage.

The audio output circuit 31 has a speaker arranged inside the audio output unit 16 (FIG. 1), operates by the electric power supplied from the second battery 32, and is operated by the blinking unit 25 in an emergency, for example, "emergency exit is. It outputs a voice that guides evacuation guidance such as "Here it is." The audio output circuit 31 and the audio output unit 16 (FIG. 1) are not essential configurations.

As the second battery 32, a rechargeable secondary battery is used. The second battery 32 can be attached to and detached from the blinking unit 25 by a connector or the like.

The blinking unit 25 is a rectifying circuit that rectifies the DC or AC power supply voltage input from the external power supply 20, an isolated power conversion circuit that is connected to the rectifying circuit and includes at least one switch element, and a secondary side of this power conversion circuit. A charging circuit 35 for charging the second battery 32 connected to, a lighting circuit 36 for converting the power supplied from the second battery 32 into a predetermined blinking power and blinking the blinking light source 30, and this lighting circuit. It is equipped with a power supply source 37 connected in parallel with the output to the blinking light source 30 of 36, a charging circuit 35, a lighting circuit 36, a control circuit 38 for controlling the power supply source 37, and the like.

The blinking unit 25 has a constant mode and an emergency mode in which the blinking light source 30 is blinked in an emergency. In the present embodiment, the blinking unit 25 further outputs audio from the audio output circuit 31 in the emergency mode.

The constant mode is a mode when an operation signal is input from the signal device 22 at the time of non-fire. The blinking light source 30 is turned off, the audio output from the audio output circuit 31 is stopped, and the external power supply 20 is used. When power is input, the second battery 32 is charged by the power from the external power source 20.

The emergency mode is a mode in which an operation signal is not input from the signal device 22 in the event of a fire, which is an emergency, and the blinking light source 30 is blinked by the power of the second battery 32 and evacuation guidance is provided from the audio output circuit 31. The voice that guides you is output. Further, the blinking unit 25 is connected to the smoke detector 23. In the emergency mode, the blinking unit 25 outputs an operating voltage to the smoke detector 23 from the power supply source 37 to operate the smoke detector 23, and inputs a detection signal from the smoke detector 23. When the smoke detector 23 detects smoke, the blinking unit 25 turns off the blinking light source 30, that is, stops the blinking control and stops the audio output operation from the audio output circuit 31. That is, even in the event of a fire, that is, in the emergency mode, the blinking unit 25 stops blinking and sound output of the blinking light source 30 when the detection signal from the smoke detector 23 is input.

Further, when the smoke detector 23 detects smoke in the emergency mode, the blinking unit 25 outputs a stop signal to the guide light 10 on the immediately above floor, and blinks and voice outputs by the guide light 10 on the directly above floor. To stop.

Next, FIG. 3 shows a circuit block diagram of a part of the blinking unit 25.

The lighting circuit 36 is a power conversion circuit including at least one switch element. The lighting circuit 36 boosts the output voltage of the second battery 32 and outputs it to the blinking light source 30 and the power supply source 37. The lighting circuit 36 is a booster circuit, and is a booster chopper circuit in the present embodiment. That is, in the lighting circuit 36, the capacitor C1 for noise filtering is connected in parallel to the second battery 32, and the series circuit of the inductor L and the diode D1 is connected to the high potential side terminal of the second battery 32. The switch element SW1 is connected between the connection point between the inductor L and the diode D1 and the low potential side terminal of the second battery 32. The cathode of the diode D1 is the output end on the high potential side of the lighting circuit 36 connected to the blinking light source 30 and the power supply source 37. A smoothing capacitor C2 is connected in parallel with the blinking light source 30 and the power supply source 37 to the output end of the lighting circuit 36. A MOSFET or the like is used for the switch element SW1, and the switch element SW1 is on / off controlled by the control circuit 38.

Further, in the lighting circuit 36, a blinking switch element SW2 for blinking the blinking light source 30 is arranged between the output end on the low potential side and the blinking light source 30. A MOSFET or the like is used for the blinking switch element SW2, and the control circuit 38 controls on / off in a predetermined blinking cycle T (FIG. 4B). In the present embodiment, the blinking cycle T (FIG. 4B) is, for example, 2 Hz or the like. That is, the on / off cycle of the blinking switch element SW2 is smaller than the on / off cycle of the switch element SW1. Further, the ON period τ (FIG. 4B) of the blinking switch element SW2 is set to a predetermined value. In the present embodiment, the on-duty (τ / T) of the blinking switch element SW2 is preferably set to less than 50%, more preferably 10%.

Further, a voltage detection unit 40 for detecting the output voltage is connected to the output end on the high potential side of the lighting circuit 36. Further, a current detection unit 41 for detecting a load current, that is, a current at the time of lighting of the blinking light source 30, is connected to the output end on the low potential side of the lighting circuit 36. The voltage detection unit 40 and the current detection unit 41 are connected to the control circuit 38, respectively, and the control circuit 38 controls the on / off of the switch element SW1 according to the detected voltage and current. That is, the lighting circuit 36 feedback-controls so that the current flowing through the blinking light source 30 at the time of lighting becomes a constant current according to the detected voltage and current. The output voltage Vout of the lighting circuit 36 is limited by the voltage detection unit 40. That is, since the current flowing through the blinking light source 30 becomes 0 during the extinguishing period, the output voltage Vout of the lighting circuit 36 is clamped to a predetermined voltage by a protection element such as a Zener diode provided in the voltage detection unit 40. The output voltage Vout of the lighting circuit 36 is set to a voltage higher than the drive voltage of the blinking light source 30 (voltage dropped by the blinking light source 30) during the extinguishing period of the blinking light source 30. In the present embodiment, the drive voltage of the blinking light source 30 is about 24 VDC, and the lighting circuit 36 is controlled to have a predetermined output voltage Vout larger than 24 VDC during the extinguishing period of the blinking light source 30.

The power supply source 37 is connected in parallel with the blinking light source 30 to the output of the lighting circuit 36, and supplies power to the smoke detector 23. In this embodiment, the power supply source 37 has a regulator 45. The regulator 45 is a voltage regulator such as a three-terminal regulator. A noise filtering capacitor C3 is connected to the input side, a smoothing capacitor C4 is connected to the output side, and the smoke detector 23 is specified from the output of the lighting circuit 36. (For example, 24 VDC) is stably generated. Further, on the output side of the regulator 45, a series circuit of the current limiting resistor R and the diode D2 is connected to the smoke detector 23.

Further, in the present embodiment, an output switch element SW3, which is a switch, is arranged between the power supply source 37 and the output end on the high potential side of the lighting circuit 36. The output switch element SW3 enables output from the lighting circuit 36 to the power supply source 37 only while the lighting circuit 36 from the power supply source 37 to the smoke detector 23 is operating. The period during which the lighting circuit 36 is operating means the period during which the switch element SW1 is on / off controlled by the control circuit 38. A diode, MOSFET, or the like is used for the output switch element SW3, and the control circuit 38 controls on / off. The output switch element SW3 is preferably turned on and off so that the on / off timing is reversely synchronized with the blinking switch element SW2. That is, it is preferable that the output switch element SW3 is turned off when the blinking switch element SW2 is on, and is turned on when the blinking switch element SW2 is off.

The operation of the smoke detector 23 is detected by the motion detection unit 47, and the signal from the motion detection unit 47 is input to the control circuit 38 as the detection signal of the smoke detector 23. In the present embodiment, the motion detection unit 47 detects the impedance of the smoke detector 23. That is, the smoke detector 23 operates by inputting a predetermined constant voltage from the power supply source 37, and when the smoke is detected, the operating current increases, so that the impedance decreases when the smoke is detected. Therefore, when the motion detection unit 47 detects a decrease in impedance, that is, when the impedance of the smoke detector 23 detected by the motion detection unit 47 drops below a predetermined value, it is detected that the smoke detector 23 has detected smoke. ..

As the operation detection unit 47, a voltage dividing circuit by a resistance connected in series with the smoke detector 23 is used for the output side of the power supply source 37, and smoke is detected by detecting the voltage between both ends of the smoke detector 23. It is possible to detect a decrease in the impedance of the device 23. Therefore, the motion detection unit 47 can operate only while the lighting circuit 36 is operating. Preferably, the motion detection unit 47 enables the detection of the motion of the smoke detector 23 only during the extinguishing period of the blinking light source 30 while the lighting circuit 36 is operating. In the present embodiment, the motion detection unit 47 operates only while the output switch element SW3 is on. That is, the motion detection unit 47 detects the motion of the smoke detector 23 only while the output switch element SW3 is on. In the present embodiment, since the on / off of the output switch element SW3 is controlled to be synchronized with the on / off of the blinking switch element SW2, the operation detection unit 47 is a smoke detector only during the extinguishing period of the blinking light source 30. Detect 23 actions.

Then, the control circuit 38 controls the lighting circuit 36 and the audio output circuit 31 according to the change in the input state of the operation signal from the signal device 22, that is, the presence / absence of input, and the change in the input state of the signal from the operation detection unit 47. do.

The motion detection unit 47 may be connected to the signal device 22 (FIG. 2). That is, the signal output from the motion detection unit 47 may be input to the control circuit 38 via the signal device 22 (FIG. 2).

Next, the operation of the guide light 10 will be described.

When the power from the external power source 20 is input to the guide light 10, the lighting unit lights the lighting light source by the power from the external power source 20 to light the display board 14, and further, the charging circuit of the lighting unit. , The charging circuit 35 of the blinking unit 25 charges the corresponding first battery and the second battery 32 by the electric power from the external power source 20, respectively. The control circuit 38 opens the output switch element SW3 when the second battery 32 is charged, and cuts off the current path to the smoke detector 23.

Further, the operation signal from the signal device 22 is always output in conjunction with the automatic fire alarm. In the guide light 10, since the operation signal from the signal device 22 is input, the blinking unit 25 does not operate the lighting circuit 36 and the audio output circuit 31 in the blinking unit 25, the blinking light source 30 is turned off, and the audio is emitted. The output circuit 31 has stopped the audio output.

Further, in the event of a power failure of the external power source 20, the lighting unit lights the lighting light source by the power of the first battery and continues the lighting display of the display board 14.

Further, in the event of a fire, the output of the operation signal from the signal device 22 is stopped in conjunction with the automatic fire alarm. In the guide light 10, when the input of the operation signal from the signal device 22 is stopped, the control circuit 38 of the blinking unit 25 switches the switch element SW1 on and off to operate the lighting circuit 36, and power is supplied from the lighting circuit 36. By outputting and switching the blinking switch element SW2 on and off at a predetermined blinking cycle, the blinking light source 30 is blinked by the power of the second battery 32, and the audio output circuit 31 is operated to guide evacuation. The voice that guides you is output. The blinking display unit 15 of the guide light 10 blinks due to the blinking operation of the blinking light source 30, and the voice output unit 16 of the guide light 10 outputs a voice guiding evacuation guidance such as "Emergency exit is here", and the guide light 10 The evacuation guidance effect is further demonstrated.

Further, power is supplied to the smoke detector 23 near the guide light 10 from the power supply source 37 connected in parallel with the blinking light source 30 on the output side of the lighting circuit 36 to operate the smoke detector 23. .. In the present embodiment, when power is supplied to the smoke detector 23, the on / off period is synchronized so that one of the blinking switch element SW2 and the output switch element SW3 is on and the other is off. Then, power is supplied to the smoke detector 23 only during the extinguishing period of the blinking light source 30, and the smoke detector 23 operates.

That is, since the light emitting element constituting the blinking light source 30 can be regarded as a constant voltage element, the voltage (drive voltage Vd) determined by the blinking light source 30 is the lighting circuit 36 during the lighting period of the blinking light source 30. The output voltage is Vout (FIG. 4A). On the other hand, during the extinguishing period of the blinking light source 30, the voltage level rises to the voltage level set by the protection element of the voltage detection unit 40, and a voltage higher than the drive voltage Vd can be secured. It is used as an output voltage (FIG. 4A), and a voltage is supplied from the power supply source 37 to the smoke detector 23.

When smoke is detected by the smoke detector 23, the control circuit 38 of the blinking unit 25 that detects the operation of the smoke detector 23 by the detection signal from the motion detection unit 47 operates the lighting circuit 36 and the voice output circuit 31. Stopping it prevents the evacuees from actively guiding in the direction in which the smoke is detected.

As described above, according to the present embodiment, the power supply source 37 is parallel to the output to the blinking light source 30 of the lighting circuit 36 that blinks the blinking light source 30 using the electric power supplied from the second battery 32. This power supply source 37 supplies voltage to the smoke detector 23, which is an external device, that is, the output voltage Vout of the lighting circuit 36 is used to generate the voltage of the power supply source 37, so for example, winding. The operating voltage of the smoke detector 23 can be easily obtained with a simple and compact configuration with fewer parts than when an additional winding is applied to the power supply. That is, it is possible to provide a blinking unit 25 that is simple and can be miniaturized.

In particular, since the lighting circuit 36 is a boost chopper circuit that boosts the voltage of the second battery 32, the operating voltage of the smoke detector 23 can be easily obtained.

Since the power supply source 37 has a regulator 45 connected to the high potential side of the output of the lighting circuit 36, it is possible to supply a highly accurate voltage to the smoke detector 23.

By enabling the output from the lighting circuit 36 to the power supply source 37 only while the lighting circuit 36 is operating by the output switch element SW3, for example, the charging circuit 35 charges the second battery 32. During the period, the output switch element SW3 is opened to cut off the current path to the smoke detector 23 to prevent the smoke detector 23 from becoming a load on the charging circuit 35, and the second battery 32 during charging. Sufficient charging current can be secured.

When the operation of the smoke detector 23 is detected by the motion detection unit 47, the blinking control of the blinking light source 30 by the lighting circuit 36 is stopped, so that the blinking light source 30 blinks in the direction filled with smoke in the event of a fire. Active guidance can be stopped.

In particular, the operation detection unit 47 enables the detection of the operation of the smoke detector 23 only during the extinguishing period of the blinking light source 30 while the lighting circuit 36 is operating, so that the output voltage of the lighting circuit 36 is enabled. It is possible to avoid the lighting period of the blinking light source 30 in which the Vout is lowered, and to secure the accuracy of the motion detection of the smoke detector 23 by the motion detection unit 47.

By providing the voice output circuit 31 that operates by supplying power from the second battery 32, not only the blinking light source 30 blinks but also the voice enables more positive guidance in the event of a fire.

In the above embodiment, the motion detection unit 47 is configured to operate only during the extinguishing period of the blinking light source 30, but the present invention is not limited to this, and the motion detection unit 47 may be constantly detected. In this case, the operation of the smoke detector 23 can be effectively detected by smoothing the detection voltage of the operation detection unit 47.

Further, the external device for supplying power from the power supply source 37 is not limited to the smoke detector 23, and may be any device linked with the guide light 10.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 guide lights
23 Smoke detector, which is an external device
25 Flashing unit as a flashing device
30 Flashing light source as a solid light source
31 Audio output circuit
32 The second battery, which is the battery
36 Lighting circuit
37 Power source
45 regulator
47 Motion detector
Switch element for output, which is a SW3 switch

Claims (6)

A flashing device used for guide lights,
With a lighting circuit that blinks a solid-state light source using the power supplied from the battery;
With a power source to an external device connected in parallel to the output of the lighting circuit to the solid state light source;
A flashing device characterized by being equipped with. The blinking device according to claim 1, wherein the power supply source is connected to the high potential side of the output of the lighting circuit and has a regulator that controls the output to the external device. The flashing device according to claim 1 or 2, further comprising a switch that enables output from the lighting circuit to the power supply source only while the lighting circuit is operating. The external device is a smoke detector.
A motion detection unit for detecting the motion of the smoke detector is provided.
The blinking device according to any one of claims 1 to 3, wherein the lighting circuit stops the blinking control of the solid-state light source when the operation of the smoke detector is detected by the operation detecting unit. The flashing device according to claim 4, wherein the motion detecting unit is effective in detecting the motion of the smoke detector only during the extinguishing period of the solid-state light source while the lighting circuit is operating. .. The flashing device according to any one of claims 1 to 5, further comprising an audio output circuit that operates by supplying power from the battery.

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