JP2013025996A - Emergency lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emergency lighting fixture which can illuminate a direction appropriate as an evacuation route for a long time without wasting power of a secondary battery.SOLUTION: The emergency lighting fixture A comprises a lighting section (light-emitting diodes 11, 12, 13, 14), a secondary battery 32, a charging circuit 31, a lighting circuit 33, and fire detection sections 21, 22 for detecting fire. The charging circuit 31 charges the secondary battery 32 by supplying power from an external power supply 5. The lighting circuit 33 lights the lighting section by supplying power from the secondary battery 32 when power supply from the external power supply 5 is interrupted. When the fire detection section 21 or 22 detects fire, the lighting section illuminates a direction different from the fire detection direction by the fire detection section 21 or 22 with an illumination light L2 or L1.

Description

  The present invention relates to an emergency lighting device.

  Conventionally, there has been an emergency lighting device including a light emitting diode, a secondary battery, ambient temperature detection means for detecting ambient temperature, and a charge / discharge circuit (see Patent Document 1). The charge / discharge circuit charges the secondary battery when power is supplied from the external power source to the emergency lighting device. In addition, the charge / discharge circuit turns on the light emitting diode with a predetermined light output by supplying a current corresponding to the ambient temperature detected by the ambient temperature detecting means to the light emitting diode using the secondary battery as a power source in an emergency. .

JP 2006-210238 A

  In an emergency lighting device as disclosed in Patent Document 1, since a preset area is illuminated, a place where a fire has occurred may be illuminated. However, even if the location where the fire is occurring is illuminated, the effect of evacuation guidance is low, and the evacuee may mistakenly select the evacuation route. Moreover, since the location where the fire is occurring is also illuminated, the power of the secondary battery is wasted, and the illumination time is shortened.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide an emergency lighting device that can illuminate an appropriate direction as an evacuation route for a long time without wasting power of a secondary battery. There is.

  In order to solve the above problems, an emergency lighting device of the present invention includes a lighting part, a secondary battery, a charging circuit part, a lighting circuit part, and a fire detection part for detecting a fire. The charging circuit unit charges the secondary battery by supplying power from an external power source. The lighting circuit unit lights the lighting unit by supplying power from the secondary battery when power supply from the external power source is cut off. When the fire detection unit detects a fire, the lighting unit illuminates a direction different from the direction in which the fire is detected by the fire detection unit.

  In this emergency lighting device, it is preferable that there are a plurality of the lighting units and the fire detection units, and the fire detection units are arranged on the same side as the direction in which each of the plurality of lighting units illuminates.

  In this emergency lighting device, when any one of the fire detection units detects a fire, the lighting circuit unit sets the lighting unit that illuminates the side where the fire detection unit not detecting a fire is installed. Turn on at the brightness. And it is preferable to make the lighting part which illuminates the side where the said fire detection part which detected the fire is installed light-extinguish or dimmer than the said predetermined brightness.

  In this emergency lighting device, the lighting circuit unit includes the fire detection unit that does not detect a fire when the fire detection unit detects a fire as compared to when the fire detection unit does not detect a fire. It is preferable to increase the light output of the lighting unit on the side where it is installed.

  In this emergency lighting device, it is preferable that the lighting section is made of a light emitting diode.

  In the present invention, there is an effect that an appropriate direction as an evacuation route can be illuminated for a long time without wasting power of the secondary battery.

(A) is an application example of the emergency lighting apparatus of Embodiment 1, (b) is the figure which looked at (a) from the bottom. (A), (b), (c), and (d) are illumination patterns of the emergency lighting device in the above. It is a circuit diagram of the emergency lighting apparatus in the same as the above.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The emergency lighting apparatus A of Embodiment 1 is demonstrated based on FIGS. 1-3.

  As shown in FIGS. 1 and 2, the emergency lighting device A is provided on the ceiling R of the passage P, for example, and illuminates the passage P in an emergency.

  As shown in FIGS. 1 to 3, the emergency lighting device A includes a main body 1 installed on a ceiling R, and fire detection units 21 and 22 provided separately from the main body 1. The main body 1 includes light emitting diodes 11, 12, 13, 14, a control unit 2, a charging circuit unit 31, a secondary battery 32, a lighting circuit unit 33, and switch elements 41, 42, 43.

  The fire detection units 21 and 22 include a heat detection unit such as a thermistor that detects heat and an optical smoke detection unit that detects smoke, and detects heat, smoke, or both heat and smoke. The fire detection signal is sent to the control unit 2. The fire detection units 21 and 22 may include only one of the heat detection unit and the smoke detection unit.

  The secondary battery 32 is, for example, a lithium ion battery or a nickel metal hydride battery, and is charged by the charging circuit unit 31 that receives power from the external power supply 5 while power is supplied from the external power supply 5.

  When power is supplied from the external power supply 5, the charging circuit unit 31 turns on the switch element 41 such as a transistor to charge the secondary battery 32. The charging circuit unit 31 monitors the power failure of the external power supply 5 and when the occurrence of the power failure is detected, the charging circuit unit 31 turns on the switch element 41 and supplies power from the secondary battery 32 to the lighting circuit unit 33 and the control unit 2.

  The lighting circuit unit 33 receives power supply from the secondary battery 32 and supplies power to the light emitting diodes 11, 12, 13, and 14 when a power failure occurs.

  As shown in FIGS. 1 and 2, the light emitting diodes 11, 12, 13, and 14 are arranged on the lower surface of the main body 1 so that the irradiation surface faces the passage P side.

  The light emitting diodes 11 and 12 are arranged side by side in the width direction of the passage P, and are distributed so as to illuminate one direction along the passage direction of the passage P (the left direction in FIG. 2A). And the fire detection part 22 is installed in the ceiling R of the other direction side (right direction side of Fig.2 (a)) rather than the light emitting diodes 13 and 14, and fire F generate | occur | produces in the illumination area | region of the light emitting diodes 13 and 14. Monitor. Similarly, the light emitting diodes 13 and 14 are arranged side by side in the width direction of the passage P, and are distributed so as to illuminate the other direction along the passage direction of the passage P (the right direction in FIG. 2B). . And the fire detection part 21 is installed in the ceiling R of one direction side (left direction side of FIG.2 (b)) rather than the light emitting diodes 11 and 12, and fire F generate | occur | produces in the illumination area | region of the light emitting diodes 11 and 12. Monitor.

  In addition, if the direction of each illumination light L1, L2 is the same as the above, as for the light emitting diodes 11, 12, 13, and 14, arrangement | positioning to the main body 1 is not limited to the above, The width direction of the channel | path P They may be arranged in one row.

  The light emitting diodes 11 and 12 are connected via the switch element 42 between the output terminal of the lighting circuit unit 33 and the circuit ground. The light emitting diodes 13 and 14 are connected via the switch element 43 between the output terminal of the lighting circuit unit 33 and the circuit ground.

  The switch elements 42 and 43 are turned on / off by the control unit 2 and are on when the fire sensing units 21 and 22 do not sense a fire. When the fire detection unit 21 detects a fire, the control unit 2 turns off the switch element 42 connected to the light emitting diodes 11 and 12 that illuminate the same side as the fire detection unit 21. When the fire detection unit 22 detects a fire, the control unit 2 turns off the switch element 43 connected to the light emitting diodes 13 and 14 that illuminate the same side as the fire detection unit 22.

  Next, the operation of the emergency lighting device A will be described. When power is supplied from the external power source 5, all the light emitting diodes 11, 12, 13, and 14 are turned off. When a power failure occurs, the charging circuit unit 31 turns on the switch element 41, and the lighting circuit unit 33 that receives power supply from the secondary battery 32 supplies power to the light emitting diodes 11, 12, 13, and 14 to emit light. The diodes 11, 12, 13, and 14 are turned on. Thereafter, as shown in FIG. 2A, when a fire F occurs on the right side of the emergency lighting device A, only the fire detection unit 22 detects the fire F, and the fire detection unit 21 detects the fire F. Not perceived. The control unit 2 turns off the switch element 43 when a fire detection signal is input only from the fire detection unit 22. At this time, the light emitting diodes 11 and 12 are supplied with electric power from the lighting circuit unit 33 to illuminate the left side of the passage P with the illumination light L1, and the light emitting diodes 13 and 14 are turned off. Direction is illuminated.

  Similarly, when a power failure occurs, as shown in FIG. 2 (b), when a fire F occurs on the left side of the emergency lighting apparatus A in the figure, only the fire detection unit 21 detects the fire F, and the fire detection unit 22 does not detect fire F. When a fire detection signal is input only from the fire detection unit 21, the control unit 2 turns off the switch element 42. At this time, the light emitting diodes 13 and 14 are supplied with electric power from the lighting circuit unit 33 to illuminate the right side of the passage P with the illumination light L2, and the light emitting diodes 11 and 12 are turned off. Is illuminated. If a fire is detected by any of the fire detection units 21 and 22 at the same time as the occurrence of a power failure, all the light emitting diodes are not turned on, and the fire detection unit that does not detect a fire is installed. Only the light-emitting diodes that illuminate are illuminated.

  In addition, when the fire detection units 21 and 22 both detect a fire after the occurrence of a power failure, the control unit 2 keeps the switch elements 42 and 43 turned on, receives power supply from the lighting circuit unit 33, and The light emitting diode lights up. Alternatively, the control unit 2 may turn off both the switch elements 42 and 43 and turn off the light emitting diodes 11, 12, 13, and 14 together.

  In this embodiment, the light emitting diode is turned on only when a power failure occurs. However, even if the power supply from the external power supply 5 is continued, the light emitting diode may be turned on when a fire is detected. I do not care.

  In addition, as shown to Fig.1 (a), the light emitting diodes 11 and 12 so that the illumination range of the illumination light L1 of the light emitting diodes 11 and 12 and the illumination range of the illumination light L2 of the light emitting diodes 13 and 14 may partially overlap. Although the light distribution of 12, 13, and 14 is set, the light distribution may be set so that the illumination ranges do not overlap.

  As described above, the emergency lighting device A senses the lighting unit (light emitting diodes 11, 12, 13, 14), the secondary battery 32, the charging circuit unit 31, the lighting circuit unit 33, and the fire F. Fire detectors 21 and 22 are provided. The charging circuit unit 31 charges the secondary battery 32 by supplying power from the external power supply 5. When a power failure occurs, the lighting circuit unit 33 turns on the lighting unit by supplying power from the secondary battery 32. When a fire is detected by the fire detection unit 21 or 22, a direction different from the direction in which the fire is detected is illuminated.

  Accordingly, since the lighting unit illuminates an appropriate direction as an evacuation route, there is an effect that an appropriate direction as an evacuation route can be illuminated for a long time without wasting power of the secondary battery 32.

  In this emergency lighting device A, it is preferable that there are a plurality of lighting units and fire detection units, and the fire detection units are arranged on the same side as the direction in which each of the plurality of lighting units illuminates.

  Thereby, the lighting part can illuminate more appropriately the direction suitable as an evacuation route where the fire F does not occur.

  In this emergency lighting device A, when any fire detection unit detects a fire F, the lighting circuit unit 33 determines a lighting unit that illuminates the side where the fire detection unit not detecting the fire F is installed. Turn on at the brightness. And it is preferable to turn off the lighting part which illuminates the side in which the fire detection part which detected the fire F is installed, or to make it light-darken rather than predetermined | prescribed brightness. As a method of dimming the lighting unit, for example, there is a method in which the control unit 2 performs PWM control of the switch elements 42 and 43. As another method, the lighting circuit unit 33 individually adjusts the current flowing through the light emitting diodes 11 and 12 and the current flowing through the light emitting diodes 13 and 14 to reduce the value of the current flowing through the light emitting diode to be dimmed. There is.

  As a result, the lighting unit that illuminates a route that is inappropriate as an evacuation route among the lighting units is turned off or dimmed, and the power consumption of the secondary battery 32 can be suppressed. Can be illuminated for a long time.

  In this emergency lighting device A, it is preferable that the lighting portion is made of a light emitting diode.

  As a result, the direction of the illumination light is higher when the light source is a light emitting diode than when the light source is an electron tube such as a fluorescent lamp, so that an appropriate direction as an evacuation route can be accurately illuminated. . In addition, since the possibility of failure due to aging deterioration of the light source and a decrease in illuminance is reduced, the reliability as an emergency lighting device is increased.

  In addition, in FIGS. 1-3, the number of the light emitting diodes which illuminate one direction is two. However, in order to increase the illuminance or the illumination range, three or more may be connected in series. A light emitting diode may be connected in parallel between the lighting circuit unit 33 and the switch elements 42 and 43.

  In addition, the emergency lighting device A may be installed at an intersection where three or more passages intersect. In that case, a lighting unit that irradiates light to each passage that leads to the intersection, and light of the lighting unit It suffices if a fire detection unit for detecting a fire is provided in the region where the light is irradiated. And when a fire is detected, what is necessary is just to illuminate the passage P which is not detected in a lighting part.

(Embodiment 2)
Since the configuration of the emergency lighting apparatus A of the second embodiment is the same as that of the first embodiment, the description thereof is omitted, and only the operation different from that of the first embodiment is described.

  In the emergency lighting device A of the present embodiment, when a fire is detected when a power failure occurs, the lighting unit that illuminates the side where the fire detection unit that does not detect the fire F is installed is illuminated with higher illuminance. . Further, as shown in FIGS. 2C and 2D, the lighting unit that illuminates the direction in which the flame F is generated may be dimmed. As a method for increasing or decreasing the illuminance of the lighting unit, for example, there is a method in which the control unit 2 performs PWM control of the switch elements 42 and 43. As another method, the lighting circuit unit 33 individually adjusts the current flowing through each light emitting diode, increases the value of the current flowing through the light emitting diode of the lighting unit that increases the illuminance, and flows through the light emitting diode of the lighting unit that decreases the illuminance. There are methods for reducing the current value.

  As described above, in the emergency lighting device A, the lighting circuit unit 33 is provided on the lighting unit on the side where the fire detection unit that does not detect the fire F is installed when the fire detection unit detects the fire F. It is preferable to increase the light output as compared to when the fire detection unit does not detect the fire F.

  As a result, there is no possibility of a decrease in illuminance of the light emitting diode due to an increase in ambient temperature. Furthermore, since smoke is generated in the passage P when a fire breaks out, the light is blocked by the smoke, but the light is easily seen by increasing the light output, so the evacuation route is more appropriately guided to the refugee.

  The lighting part in Embodiment 1 and Embodiment 2 described above is not restricted to a light emitting diode, and may be an electron tube such as a fluorescent lamp or an incandescent lamp.

1 Body 11, 12, 13, 14 Light-emitting diode (lighting part)
2 Control unit 21, 22 Fire detection unit 31 Charging circuit unit 32 Secondary battery 33 Lighting circuit unit 41, 42, 43 Switch element 5 External power supply L1, L2 Illumination light R Ceiling P Passage F Fire

Claims (5)

A lighting unit, a secondary battery, a charging circuit unit that charges the secondary battery by power supply from an external power source, and the power supply from the external battery when the power supply from the external power source is cut off It has a lighting circuit section that lights up the lighting section and a fire detection section that detects a fire,
When the fire detection unit detects a fire, the lighting unit illuminates a direction different from the direction in which the fire is detected by the fire detection unit.   The emergency lighting device according to claim 1, wherein there are a plurality of the lighting units and the fire detection units, and the fire detection units are arranged on the same side as the direction in which each of the plurality of lighting units illuminates. .   When any one of the fire detection units detects a fire, the lighting circuit unit turns on the lighting unit that illuminates the side where the fire detection unit not detecting a fire is installed with a predetermined brightness. 3. The emergency lighting device according to claim 2, wherein the lighting unit that illuminates the side on which the fire detection unit that has detected a fire is turned off or dimmed from the predetermined brightness.   The lighting circuit unit is provided on the side where the fire detection unit that does not detect fire is installed when the fire detection unit detects fire compared to when the fire detection unit does not detect fire. The emergency lighting device according to claim 3, wherein the light output of the lighting part is increased. The emergency lighting device according to any one of claims 1 to 4, wherein the lighting section is made of a light emitting diode.

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