JP2024061744A - Disaster prevention lighting equipment and disaster prevention systems - Google Patents

Abstract

The present invention aims to reduce the risk of harm to people in the event of an emergency.
[Solution] Disaster prevention lighting device 1b is a device installed inside a building. Disaster prevention lighting device 1b includes an acquisition unit 5 and a presentation unit 6b. The acquisition unit 5 acquires emergency information from outside. The emergency information is information related to the occurrence of an emergency. The presentation unit 6b changes the information to be presented based on the emergency information acquired by the acquisition unit 5. The presentation unit 6b has a function of displaying a pictogram under normal circumstances, and a function of displaying, as evacuation information, a figure indicating that the direction in which disaster prevention lighting device 1b is installed is different from the evacuation direction when the acquisition unit 5 acquires emergency information and the information that the presentation unit 6b normally presents is not suitable as evacuation information based on the emergency information.
[Selected figure] Figure 7

Description

This disclosure relates generally to disaster prevention lighting fixtures and disaster prevention systems, and more specifically to disaster prevention lighting fixtures installed in buildings and disaster prevention systems equipped with disaster prevention lighting fixtures.

Conventionally, emergency lighting devices that turn on a light source during a power outage are known as disaster prevention lighting devices (see, for example, Patent Document 1).

The emergency lighting device described in Patent Document 1 includes a light source unit, a lighting circuit, a charging circuit, a power outage detection circuit, and a control circuit. When the power outage detection circuit does not detect a power outage in the external power source, the control circuit is configured to operate the charging circuit and stop the lighting circuit (i.e., to cause the lighting circuit to turn off the light source unit). On the other hand, when the power outage detection circuit detects a power outage in the external power source, the control circuit is configured to stop the charging circuit and operate the lighting circuit. This causes the light source unit to light up when the external power source fails.

JP 2017-73276 A

In recent years, there has been a demand to reduce the risk of harm (damage) to people in the event of an emergency. However, in conventional disaster prevention lighting devices such as the emergency lighting device described in Patent Document 1, the light source only turns on when the external power source fails.

This disclosure has been made in consideration of the above points, and the purpose of this disclosure is to provide a disaster prevention lighting device and a disaster prevention system that can reduce harm (damage) to people in the event of an emergency.

A disaster prevention lighting device according to one aspect of the present disclosure is installed inside a building. The disaster prevention lighting device includes an acquisition unit and a presentation unit. The acquisition unit acquires emergency information from outside. The emergency information is information related to the occurrence of an emergency. The presentation unit changes the information presented based on the emergency information acquired by the acquisition unit. The presentation unit has a function of displaying a pictogram under normal circumstances, and a function of displaying, as the evacuation information, a figure indicating that the direction in which the disaster prevention lighting device is installed is different from the evacuation direction when the acquisition unit acquires the emergency information and the information presented by the presentation unit under normal circumstances is not suitable as evacuation information based on the emergency information.

A disaster prevention system according to one aspect of the present disclosure includes a disaster prevention lighting device and a control device. The disaster prevention lighting device is installed in a building. The control device controls the disaster prevention lighting device. The control device has an acquisition unit. The acquisition unit acquires emergency information from the outside. The emergency information is information related to the occurrence of an emergency. The disaster prevention lighting device has a presentation unit. The presentation unit changes the information presented based on the emergency information acquired by the acquisition unit. The presentation unit has a function of displaying a pictogram under normal circumstances, and a function of displaying, as the evacuation information, a figure indicating that the direction in which the disaster prevention lighting device is installed is different from the evacuation direction when the acquisition unit acquires the emergency information and the information presented by the presentation unit under normal circumstances is not suitable as evacuation information based on the emergency information.

The disaster prevention lighting device and disaster prevention system according to the above aspects of the present disclosure can reduce the risk of harm to people in the event of an emergency.

FIG. 1 is a block diagram showing the configuration of a disaster prevention lighting device according to the first embodiment. FIG. 2 is an exploded perspective view of the disaster prevention lighting device. FIG. 3 is a block diagram showing the configuration of a disaster prevention lighting device according to the second embodiment. FIG. 4 is a perspective view of the disaster prevention lighting device. FIG. 5 is a perspective view of a main part of the disaster prevention lighting device. 6A to 6E are schematic diagrams showing display examples of the disaster prevention lighting device. FIG. 7 is a block diagram showing the configuration of a disaster prevention lighting device according to the third embodiment. FIG. 8 is a perspective view of the disaster prevention lighting device. 9A to 9D are schematic diagrams showing display examples of the disaster prevention lighting device. FIG. 10 is a block diagram showing the configuration of a disaster prevention system according to the fourth embodiment.

The disaster prevention lighting devices according to the first to third embodiments and the disaster prevention system according to the fourth embodiment will be described below with reference to the drawings. Figures 2, 4, 5, and 8, which are referred to in the following embodiments, are schematic diagrams, and the ratios of sizes and thicknesses of the components in the diagrams do not necessarily reflect the actual dimensional ratios.

(Embodiment 1)
(1) Disaster Prevention Lighting Device The configuration of a disaster prevention lighting device 1 according to the first embodiment will be described with reference to the drawings.

As shown in Fig. 1, the disaster prevention lighting device 1 according to the first embodiment includes a light source unit 2, a lighting device 3, an emergency power source 4, an acquisition unit 5, a presentation unit 6, and a control circuit 7. As shown in Fig. 2, the disaster prevention lighting device 1 also includes a device body 81, a cover 82, and multiple (two in Fig. 2) supports 83.

As shown in Figs. 1 and 2, the disaster prevention lighting device 1 according to the first embodiment is an emergency lighting device (emergency light) that turns on the light source 21 of the light source unit 2 when the external power source 91 is stopped (in an emergency). The disaster prevention lighting device 1 is configured to be installed in a building such as a high-rise building or a large commercial facility. The disaster prevention lighting device 1 is installed in a ceiling material such as a passageway or a corridor in a building. In addition, the disaster prevention lighting device 1 is a recessed type lighting device that is installed in a ceiling material in a building such that a portion of the ceiling material is recessed into the back side of the ceiling material through a recessed hole formed in the ceiling material.

The disaster prevention lighting device 1 is configured to acquire emergency information and evacuation information from the outside. In the example of FIG. 1, the disaster prevention lighting device 1 is configured to acquire emergency information and evacuation information from an emergency information transmission system 92 and an input device 93. More specifically, the disaster prevention lighting device 1 is configured to acquire emergency information from the emergency information transmission system 92, and acquire emergency information and evacuation information from the input device 93. Note that the disaster prevention lighting device 1 may be configured to acquire both the emergency information and the evacuation information from the emergency information transmission system 92. Alternatively, the disaster prevention lighting device 1 may be configured to acquire only one of the emergency information and the evacuation information from the input device 93.

In this specification, emergency information is information related to the occurrence of an emergency. For example, emergency information is information transmitted from the emergency information transmission system 92 when an emergency occurs. As another example, emergency information is information input to the input device 93 (information related to the occurrence of an emergency). Examples of emergency information include information indicating that an emergency has occurred and the location where the emergency has occurred.

An example of an emergency is a disaster. In this specification, a disaster refers to damage to at least one of human social life and human life. Examples of disasters include fires and natural disasters. In this specification, a natural disaster is a disaster caused by a natural phenomenon. Examples of natural phenomena include storms, heavy rain, heavy snow, floods, high tides, earthquakes, tsunamis, and volcanic eruptions. In particular, in this specification, a natural disaster is a disaster caused by at least one of tsunamis and earthquakes.

In this specification, evacuation information is information related to evacuation in the event of an emergency. For example, evacuation information is information for guiding evacuation when an emergency occurs. Examples of evacuation information include the type of disaster, the type of harm (damage) that people will suffer from the disaster, the time until people will be harmed by the disaster, the location of the evacuation site, the direction of the evacuation site, the distance to the evacuation site, the route to the evacuation site, and the travel time to the evacuation site.

1 is, for example, a nationwide instantaneous warning system (J-Alert). The emergency information transmission system 92 detects the occurrence of an emergency and transmits emergency information related to the detected occurrence of the emergency.

(3) Input Device The input device 93 shown in Fig. 1 is a device that accepts input of emergency information and evacuation information. For example, when an emergency occurs, the input device 93 accepts input of emergency information related to the occurrence of the emergency. As another example, when an emergency occurs, the input device 93 accepts input of evacuation information related to evacuation in response to the emergency. The input device 93 is, for example, a device owned by a local government.

(4) Each component of the disaster prevention lighting device Each component of the disaster prevention lighting device 1 according to the first embodiment will be described below with reference to the drawings.

(4.1) Light Source Block As shown in FIGS. 1 and 2 , the light source unit 2 includes a light source 21, a lens block 22, a heat dissipation member 23, and a mounting member 24.

The light source 21 shown in FIG. 1 is, for example, an LED (Light Emitting Diode) module, with one or more LED chips mounted in the center of the top surface of a rectangular, flat substrate. These LED chips are, for example, blue light-emitting diodes that emit blue light. The substrate containing the LED chips is covered with sealing resin. The sealing resin is a translucent resin material mixed with a fluorescent substance that converts the wavelength of the blue light emitted from the LED chip. The light source 21 emits white illumination light when a DC voltage is applied.

The lens block 22 shown in FIG. 2 is made of, for example, glass, and has a lens 221 and a flange 222. The lens 221 is frustum shaped. The flange 222 is annular and protrudes outward from the periphery of the lens 221. The lens 221 has an entrance surface that is shaped like a paraboloid of revolution. The lens 221 is configured to control the distribution of light emitted from the light source 21 and incident on the entrance surface.

The heat dissipation member 23 shown in FIG. 2 is made of a plate material made of aluminum or an aluminum alloy, and has a connecting portion that is thermally connected to the light source 21 (see FIG. 1) and a fixing portion 231 that is fixed to the lighting device 3.

The mounting member 24 shown in FIG. 2 is formed in a circular ring shape from a synthetic resin material such as polycarbonate resin. The mounting member 24 has a circular hole 241.

(4.2) Fixture Body As shown in FIG. 2, the fixture body 81 houses the lighting device 3. The fixture body 81 is formed in a cylindrical shape with an opening at the lower end and a closed upper end. The fixture body 81 is formed by punching and bending a single sheet metal such as a zinc steel plate or a stainless steel plate. The fixture body 81 has a polygonal bottom plate, a side plate 811, and a flange 812. The side plate 811 is connected to the bottom plate of the fixture body 81 and constitutes the side of the fixture body 81. The flange 812 is annular and protrudes outward from the lower edge of the side plate 811.

(4.3) Cover The cover 82, as shown in Fig. 2, is disk-shaped and larger than the outer diameter of the fixture body 81 (the outer diameter of the tip edge of the flange 812), and is formed by processing a steel plate. A circular through-hole 821 is formed in the center of the cover 82. The lens 221 of the lens block 22 of the light source unit 2 is inserted into the through-hole 821. The cover 82 is configured to releasably cover the opening on the front surface of the fixture body 81.

Attachment springs 84 are attached to the front and rear ends of the upper surface of the cover 82. The pair of attachment springs 84 are removably inserted into insertion grooves 813 provided on the front and rear sides of the inner circumferential surface of the instrument body 81. In other words, the cover 82 is held on the instrument body 81 in a state where the opening at the lower end of the instrument body 81 is closed by inserting each attachment spring 84 into a pair of insertion grooves 813.

(4.4) Supports As shown in FIG. 2, the multiple supports 83 are attached to the side plate 811 of the fixture body 81. Each support 83 is formed in the shape of a long leaf spring. One end of each support 83 is fixed to the side plate 811 of the fixture body 81, and the other end of each support 83 is configured to be bendable in a direction approaching the bottom plate of the fixture body 81 (upward). The fixture body 81 is inserted from below into an embedding hole provided in the ceiling material in a state in which the other ends of the pair of supports 83 are bent in a direction approaching the bottom plate of the fixture body 81. When the fixture body 81 is inserted into the embedding hole, each of the multiple supports 83 returns to a state before being bent, and the fixture body 81 is supported by the ceiling material in a state in which the ceiling material is sandwiched between the multiple supports 83 and the flange 812 of the fixture body 81.

(4.5) Lighting Device As shown in Fig. 1, the lighting device 3 is configured to light the light source 21 of the light source unit 2. The lighting device 3 includes a power supply circuit 31, a charging circuit 32, a lighting circuit 33, a power failure detection circuit 34, and a monitor lamp 35. Furthermore, as shown in Fig. 2, the lighting device 3 includes a housing 36. The lighting device 3 is housed in a fixture body 81. While being housed in the fixture body 81, the lighting device 3 is fixed to the fixture body 81.

The power supply circuit 31 is, for example, a self-excited switching power supply circuit such as a ringing choke converter. The power supply circuit 31 converts AC voltage supplied from an external power source 91 (for example, a commercial power system) into DC voltage. The charging circuit 32 is configured to charge the storage battery of the emergency power supply 4.

The charging circuit 32 charges the emergency power supply 4 when power is being supplied from the external power supply 91. More specifically, the charging circuit 32 operates when power is being supplied from the external power supply 91, and is configured to pass a constant charging current from the power supply circuit 31 to the emergency power supply 4 according to instructions from the lighting control unit 71 described below.

The lighting circuit 33 is configured to supply power to the light source 21 of the light source unit 2. More specifically, when the external power source 91 is stopped, the lighting circuit 33 lights up the light source 21 with power supplied from the emergency power source 4 in accordance with instructions from the lighting control unit 71 described below.

The power outage detection circuit 34 is configured to detect a power outage of the external power source 91. More specifically, the power outage detection circuit 34 detects a power outage of the external power source 91 from the output voltage of the power supply circuit 31 and notifies the control circuit 7 of the detection result.

The monitor lamp 35 is electrically connected between the charging circuit 32 and the emergency power supply 4. The monitor lamp 35 is, for example, a light-emitting diode that emits green light, and is provided on the device body 81 (see FIG. 2). The monitor lamp 35 emits light in response to the charging current supplied from the charging circuit 32 to the emergency power supply 4, indicating that the emergency power supply 4 is being charged.

(4.6) Emergency Power Supply As shown in FIG. 2, the emergency power supply 4 has a plurality of secondary batteries and a battery case 41. Each secondary battery is, for example, a cylindrical nickel-metal hydride storage battery or a cylindrical lithium-ion secondary battery. The plurality of secondary batteries are electrically connected in series. The battery case 41 accommodates the plurality of secondary batteries. The battery case 41 is formed in a cylindrical shape with horseshoe-shaped (U-shaped) bottom surfaces on both the upper and lower sides. The plurality of secondary batteries are accommodated in the battery case 41 so that the axial direction is the up-down direction and they are lined up in a row along the radial direction.

As described above, the disaster prevention lighting device 1 according to this embodiment is an emergency lighting device, so in an emergency, power is supplied from the emergency power source 4 to light the light source 21. Here, an emergency is, for example, when the external power source 91 experiences a power outage.

(4.7) Acquisition Unit The acquisition unit 5 shown in Fig. 1 acquires emergency information and evacuation information from the outside. More specifically, the acquisition unit 5 acquires emergency information from an emergency information transmission system 92. Furthermore, the acquisition unit 5 acquires emergency information and evacuation information from an input device 93 that accepts input of emergency information. The acquisition unit 5 acquires emergency information and evacuation information when an emergency occurs. The acquisition unit 5 receives a signal including the emergency information and evacuation information, for example, by wired or wireless communication. The acquisition unit 5 outputs the emergency information and evacuation information included in the received signal to the control circuit 7.

1 includes a sound output unit 61. The presentation unit 6 presents evacuation information. More specifically, when an emergency occurs, the presentation unit 6 presents the evacuation information in accordance with an instruction from a presentation control unit 73 (described later) of the control circuit 7. The evacuation information presented by the presentation unit 6 is evacuation information related to evacuation in response to an emergency in the emergency information acquired by the acquisition unit 5, and the evacuation information acquired by the acquisition unit 5.

The presentation unit 6 also presents emergency information. More specifically, when an emergency occurs, the presentation unit 6 presents evacuation information regarding evacuation in the event of an emergency, in accordance with instructions from the presentation control unit 73, which will be described later.

The sound output unit 61 has an audio output function that outputs emergency information and evacuation information by voice. The sound output unit 61 includes a speaker 611 and a drive circuit as shown in FIG. 2. The speaker 611 is attached to the cover 82. The drive circuit drives the speaker 611. More specifically, the drive circuit amplifies an audio signal from the control circuit 7 and outputs the amplified audio signal to the speaker 611, thereby driving the speaker 611.

The presentation unit 6 presents, as evacuation information, at least one of the following: type of disaster, type of harm to people caused by the disaster, time until people are harmed by the disaster, location of evacuation site, direction of evacuation site, distance to evacuation site, route to evacuation site, and travel time to evacuation site.

(4.9) Control Circuit As shown in Fig. 1, the control circuit 7 includes a lighting control unit 71, a calculation unit 72, a presentation control unit 73, and a storage unit 74. The control circuit 7 includes a computer (including a microcomputer) equipped with a processor and a memory as a main component. The computer functions as the control circuit 7 by the processor executing an appropriate program. The program may be pre-recorded in the memory, or may be provided via a telecommunication line such as the Internet, or recorded on a non-transitory recording medium such as a memory card.

(4.9.1) Lighting control unit The lighting control unit 71 shown in FIG. 1 controls the charging circuit 32 and the lighting circuit 33 of the lighting device 3. More specifically, when the power failure detection circuit 34 does not detect a power failure of the external power source 91, the lighting control unit 71 operates the charging circuit 32 and stops the lighting circuit 33. That is, the light source 21 of the light source unit 2 does not light up. On the other hand, when the power failure detection circuit 34 detects a power failure of the external power source 91, the lighting control unit 71 stops the charging circuit 32 and operates the lighting circuit 33. As a result, when the external power source 91 is in a power failure, the light source 21 of the light source unit 2 lights up, thereby lighting the location where the disaster prevention lighting device 1 is installed.

(4.9.2) Calculation Unit The calculation unit 72 calculates evacuation information using the emergency information acquired by the acquisition unit 5, and outputs the evacuation information that is the calculation result to the presentation control unit 73. More specifically, the calculation unit 72 uses the emergency information input from the acquisition unit 5 to calculate, as evacuation information, at least one of the following: the type of disaster, the type of harm that people will suffer as a result of the disaster, the time until people will be harmed by the disaster, the location of the evacuation site, the direction of the evacuation site, the distance to the evacuation site, the route to the evacuation site, and the travel time to the evacuation site.

For example, the calculation unit 72 uses the current location information and map information to determine the distance to the evacuation site, the route to the evacuation site, and the travel time to the evacuation site as evacuation information. The current location information and map information used by the calculation unit 72 are stored in the memory unit 74. The current location information and map information may be obtained from outside when the disaster prevention lighting device 1 is installed, or may be obtained from outside during calculation by the calculation unit 72.

As another example, the calculation unit 72 may calculate evacuation information from emergency information using a classifier (trained model) that has undergone machine learning. The classifier is generated, for example, by supervised learning using training data that indicates the relationship between warning information and evacuation information. The parameters of the classifier are stored in the memory unit 74.

1 controls the presentation unit 6. More specifically, the presentation control unit 73 controls the presentation unit 6 to present the emergency information acquired by the acquisition unit 5, the evacuation information acquired by the acquisition unit 5, and the evacuation information calculated by the calculation unit 72. The presentation control unit 73 controls the sound output unit 61 to present the emergency information and the evacuation information when an emergency occurs.

(5) Effects When emergency information is acquired from outside, the disaster prevention lighting device 1 according to the first embodiment presents evacuation information for evacuation in response to the emergency information. This allows evacuation information for the emergency in response to the emergency information acquired from outside to be presented in a location where the disaster prevention lighting device 1 is installed, thereby reducing the risk of harm to people in the event of an emergency.

In the disaster prevention lighting device 1 according to the first embodiment, the emergency information acquired by the acquisition unit 5 is information transmitted from the emergency information transmission system 92 when an emergency occurs. This allows the information to correspond to the emergency information transmitted from the emergency information transmission system 92, so that evacuation information can be presented early. As a result, it is possible to further reduce the risk of harm to people in the event of an emergency.

The disaster prevention lighting device 1 according to the first embodiment acquires emergency information from an input device 93 that accepts input of emergency information. This makes it possible to acquire emergency information that is limited to a certain area and is not transmitted by the emergency information transmission system 92, for example, and therefore to present evacuation information more accurately.

In the disaster prevention lighting device 1 according to the first embodiment, the presentation unit 6 presents, as evacuation information, at least one of the following: the type of disaster as an emergency situation, the type of harm to people caused by the disaster as an emergency situation, the time until people are harmed by the disaster as an emergency situation, the location of the evacuation site, the direction of the evacuation site, the distance to the evacuation site, the route to the evacuation site, and the travel time to the evacuation site. This allows specific information to be presented as evacuation information, thereby further reducing harm to people in the event of an emergency situation.

In the disaster prevention lighting device 1 according to the first embodiment, the light source 21 is turned on by the power supplied from the emergency power source 4 when the external power source 91 is stopped. This allows the disaster prevention lighting device 1 to function as an emergency lighting device. In other words, in an emergency other than the stoppage of the external power source 91, it is possible to ensure illuminance and to present evacuation information in the event of an emergency.

(6) Modifications Modifications of the first embodiment will now be described.

The disaster prevention lighting fixture 1 may be a direct-attached lighting fixture that is directly attached to the ceiling, rather than a recessed lighting fixture.

The disaster prevention lighting device 1 is not limited to being a battery-equipped emergency lighting device as shown in FIG. 2, but may also be a lighting device with a separate power source that receives power from an external power source 91.

In the disaster prevention lighting device 1, the light source 21 is a light-emitting diode in the first embodiment, but may be a light-emitting element such as an OLED (Organic Light Emitting Diode).

The disaster prevention lighting device 1 according to each of the above-mentioned modified examples also achieves the same effects as the disaster prevention lighting device 1 according to the first embodiment.

(Embodiment 2)
The disaster prevention lighting device 1a according to the second embodiment differs from the disaster prevention lighting device 1 according to the first embodiment (see FIG. 2) in that it is an emergency exit light as shown in FIG.

(1) Disaster Prevention Lighting Device The disaster prevention lighting device 1a according to the second embodiment includes a lighting device 3a, an emergency power source 4a, an acquisition unit 5, a presentation unit 6a, and a control circuit 7a, as shown in Fig. 3. The disaster prevention lighting device 1a also includes a display unit 2a, a flashing light source unit 27, and a housing 85b, as shown in Figs. 4 and 5. Note that, regarding the disaster prevention lighting device 1a according to the second embodiment, components similar to those of the disaster prevention lighting device 1 according to the first embodiment are denoted by the same reference numerals and will not be described.

As shown in Figs. 3 and 4, the disaster prevention lighting fixture 1a is an emergency light for indicating an emergency exit or evacuation direction of a building. The disaster prevention lighting fixture 1a is installed on the ceiling material of an emergency exit or evacuation route of a building.

Like the disaster prevention lighting device 1 according to embodiment 1 (see FIG. 1), the disaster prevention lighting device 1a is configured to acquire emergency information and evacuation information from the outside. In the example of FIG. 3, the disaster prevention lighting device 1 is configured to acquire emergency information and evacuation information from the emergency information transmission system 92 and the input device 93. More specifically, the disaster prevention lighting device 1a is configured to acquire emergency information from the emergency information transmission system 92 and acquire emergency information and evacuation information from the input device 93. The disaster prevention lighting device 1a may be configured to acquire both the emergency information and the evacuation information from the emergency information transmission system 92. Alternatively, the disaster prevention lighting device 1a may be configured to acquire only one of the emergency information and the evacuation information from the input device 93.

(2) Each component of the disaster prevention lighting device Each component of the disaster prevention lighting device 1a according to the second embodiment will be described below with reference to the drawings.

(2.1) Housing The housing 85 shown in FIG. 4 is formed in a rectangular parallelepiped shape. In the example of FIG. 4, the housing 85 has a main body 86 and a plate 87. The housing 85 (main body 86 and plate 87) is formed of a non-combustible material such as a steel plate. The main body 86 is formed in a box shape with an open front. The plate 87 has a main portion 871 and four side portions 872. The main portion 871 is formed in a rectangular flat plate shape. The four side portions 872 are formed so as to protrude rearward from the four sides of the main portion 871. The plate 87 is detachably attached to the main body 86 by a pair of attachment springs.

4 and 5, the display unit 2a includes a display panel 25 (guidance display section) and a light source unit 26. The display unit 2a is accommodated in a housing 85.

The display panel 25 shown in FIG. 4 is formed into a rectangular plate shape from a translucent synthetic resin material such as acrylic resin or polycarbonate resin. A pictogram indicating an emergency exit is drawn on the front of the display panel 25. A pictogram indicating an evacuation direction may also be drawn on the front of the display panel 25. In other words, the display panel 25 indicates an emergency exit or an evacuation direction.

As shown in Figures 3 and 5, the light source unit 26 includes a light source 261, a light guide member, and a case 262.

The light source 261 is, for example, one or more LEDs. The light guide member guides the light emitted from the light source 261. The case 262 houses the light source 261 and the light guide member.

The light guide member is formed into a columnar shape from a translucent synthetic resin material such as acrylic resin or polycarbonate resin. The longitudinal (left-right) end face of the light guide member faces the LED. That is, light emitted from the light source 261 enters the light guide member from the longitudinal end face of the light guide member and exits from the bottom surface of the light guide member. Then, the light exiting from the bottom surface of the light guide member enters the display panel 25 from its top surface. The display panel 25 emits the light entering from its top surface out from the front surface.

The case 262 is formed in a rectangular parallelepiped shape with the longitudinal direction being the left-right direction. The LED of the light source 261 is disposed at the end of the longitudinal direction (left-right direction) of the case 262. An opening is provided on the bottom surface of the case 262 for emitting the light emitted from the light guide member to the outside of the case 262.

The display unit 2a is housed in the housing 85 with the front surface of the display panel 25 exposed from a rectangular window 851 provided in the housing 85. The display unit 2a increases the brightness of the front surface of the display panel 25 and improves the visibility of the pictograms by illuminating the entire display panel 25 with light from the light source unit 26.

(2.3) Flashing Light Source Unit The flashing light source unit 27 includes a flashing light source 271, a lens 272, and an attachment member. The flashing light source 271 is, for example, an LED. The lens 272 controls the distribution of light emitted from the flashing light source 271. The flashing light source 271 and the lens 272 are attached to the attachment member. The flashing light source unit 27 is housed in the housing 85 by fixing the attachment member to a lower end portion of the inner bottom surface of the housing 85. The lens 272 protrudes outside the housing 85 through an insertion hole 852 provided in the center of the longitudinal direction (left-right direction) of the lower side wall of the housing 85.

(2.4) Lighting Device As shown in Fig. 3, the lighting device 3a is configured to light the light source 261 of the light source unit 26 and the flashing light source 271 of the flashing light source unit 27. The lighting device 3a includes a power supply circuit 31, a charging circuit 32, a monitor lamp 35, a first lighting circuit 37, and a second lighting circuit 38. The lighting device 3a also includes a switch 391 and a diode 392.

The power supply circuit 31 converts the AC voltage supplied from the external power supply 91 into a DC voltage. The power supply circuit 31 has, for example, a rectifier circuit and a boost chopper circuit.

The charging circuit 32 charges the emergency power supply 4 when power is supplied from the external power supply 91. More specifically, the charging circuit 32 operates using the DC voltage output from the power supply circuit 31, and supplies a charging current to the emergency power supply 4 to charge the emergency power supply 4.

The first lighting circuit 37 is configured to supply power to the light source 261 of the light source unit 26. More specifically, the first lighting circuit 37 has, for example, a step-up/step-down chopper circuit. The first lighting circuit 37 steps down the DC voltage supplied from the power supply circuit 31 and outputs it to the light source 261. The light source 261 is electrically connected in series between the output terminals of the first lighting circuit 37. The first lighting circuit 37 also steps up the DC voltage supplied from the emergency power supply 4 and outputs it to the light source 261. Furthermore, the first lighting circuit 37 makes the DC current flowing through the light source 261 a constant current.

The second lighting circuit 38 is configured to supply power to the flashing light source 271 of the flashing light source unit 27. More specifically, the second lighting circuit 38 has, for example, a step-up/step-down chopper circuit. The second lighting circuit 38 steps up or steps down the DC voltage supplied from the emergency power source 4 and outputs it to the flashing light source 271. The flashing light source 271 is electrically connected in series between the output terminals of the second lighting circuit 38. The second lighting circuit 38 also makes the DC current flowing through the flashing light source 271 constant current. When the power supply from the external power source 91 is stopped, the second lighting circuit 38 lights up the flashing light source 271 with the power discharged from the emergency power source 4.

The switch 391 is inserted in the middle of the power supply path from the positive pole of the emergency power supply 4 to the first lighting circuit 37 and the second lighting circuit 38. The switch 391 is a semiconductor switching element such as a MOSFET. That is, when the switch 391 is closed (on), power is supplied from the emergency power supply 4 to the first lighting circuit 37 and the second lighting circuit 38 through the power supply path, and the light source 261 and the flashing light source 271 are turned on. On the other hand, when the switch 391 is open (off), the power supply path from the emergency power supply 4 to the first lighting circuit 37 and the second lighting circuit 38 is cut off. Note that a diode 392 for preventing reverse current is electrically connected between the switch 391 and the first lighting circuit 37.

(2.5) Presentation Unit The presentation unit 6a shown in FIG. 3 includes a sound output unit 61a and a display unit 62. As with the presentation unit 6 of the first embodiment (see FIG. 1), the presentation unit 6a presents evacuation information. More specifically, the presentation unit 6a presents evacuation information in response to an instruction from a presentation control unit 73a (described later) of the control circuit 7a when an emergency occurs. The presentation unit 6a also presents emergency information. More specifically, the presentation unit 6a presents evacuation information regarding evacuation from an emergency in response to an instruction from a presentation control unit 73a (described later) when an emergency occurs. Note that, regarding the presentation unit 6a of the second embodiment, a description of the same configuration and function as the presentation unit 6 of the first embodiment will be omitted.

The sound output unit 61a has an audio output function of outputting emergency information and evacuation information by voice. The sound output unit 61a includes a speaker 611 as shown in FIG. 5 and a drive circuit. The speaker 611 is housed in the housing 85. A window 853 for the speaker 611 is opened to the left of the window 851 in the housing 85. The window 853 is covered with a cover 854. The cover 854 has a number of holes penetrating in the thickness direction of the cover 854. In other words, the sound output from the speaker 611 is emitted to the outside of the housing 85 through these many holes. The drive circuit drives the speaker 611. More specifically, the drive circuit amplifies an audio signal from the control circuit 7a and drives the speaker 611 by outputting the amplified audio signal to the speaker 611.

The display unit 62 is an image display device having a display function for displaying emergency information and evacuation information. The display unit 62 includes a monitor 63 as shown in FIG. 4 and a drive circuit. The monitor 63 is housed in a housing 85. A window 855 for the monitor 63 is opened below a window 851 in the housing 85. The drive circuit drives the monitor 63.

When the disaster prevention lighting device 1a receives a blinking instruction signal from an external emergency light signal device, the presentation unit 6a blinks the blinking light source to enhance the guidance effect. In addition, when the disaster prevention lighting device 1a receives an instruction signal from the emergency light signal device, the presentation unit 6a outputs a guidance sound (for example, a voice message such as "Emergency exit is this way") from the sound output unit 61a described below to enhance the guidance effect.

Furthermore, the presentation unit 6a presents, as evacuation information, at least one of the following: type of disaster, type of harm to people caused by the disaster, time until people are harmed by the disaster, location of evacuation site, direction of evacuation site, distance to evacuation site, route to evacuation site, and travel time to evacuation site.

(2.6) Control Circuit The control circuit 7a includes a lighting control unit 71a, a calculation unit 72a, a presentation control unit 73a, and a storage unit 74a, as shown in FIG. 3. The control circuit 7a includes a computer (including a microcomputer) equipped with a processor and a memory as a main component. The processor executes an appropriate program, and the computer functions as the control circuit 7a. The program may be pre-recorded in the memory, or may be provided via a telecommunication line such as the Internet, or recorded in a non-transitory recording medium such as a memory card. The storage unit 74a stores the same information as the storage unit 74 in the first embodiment.

(2.6.1) Lighting control unit The lighting control unit 71a shown in Fig. 3 controls the first lighting circuit 37 and the second lighting circuit 38. More specifically, the lighting control unit 71a compares the output voltage of the power supply circuit 31 with a threshold value, and determines that the power supply from the external power source 91 has stopped (power outage) when the output voltage is less than the threshold value. If the lighting control unit 71a determines that the external power source 91 is not experiencing a power outage, it turns off the switch 391, and if it determines that the external power source 91 is experiencing a power outage, it turns on the switch 391.

(2.6.2) Calculation unit The calculation unit 72a shown in Fig. 3, like the calculation unit 72 (see Fig. 1) of the first embodiment, calculates evacuation information using the emergency information input from the acquisition unit 5. Then, the calculation unit 72a outputs the evacuation information, which is the calculation result, to the presentation control unit 73a.

(2.6.3) Presentation control unit The presentation control unit 73a shown in Fig. 3 controls the presentation unit 6a. More specifically, the presentation control unit 73a controls the presentation unit 6a to present the emergency information acquired by the acquisition unit 5, the evacuation information acquired by the acquisition unit 5, and the evacuation information calculated by the calculation unit 72a. The presentation control unit 73a controls the sound output unit 61a and the display unit 62 to present at least one of the emergency information and the evacuation information when an emergency occurs.

(3) Operation Hereinafter, the operation of the disaster prevention lighting device 1a according to the second embodiment will be described with reference to FIGS. 6A to 6E.

In the disaster prevention lighting device 1a, when the acquisition unit 5 acquires emergency information indicating that a tsunami has occurred, the presentation control unit 73a of the control circuit 7a controls the presentation unit 6a to present evacuation information for evacuating in the event of a tsunami. For example, as shown in FIG. 6A, the display unit 62 of the presentation unit 6a displays evacuation information such as "Tsunami occurred (10m) arriving in 20 minutes" and "Risk of drowning." The sound output unit 61a of the presentation unit 6a outputs the evacuation information by sound. By presenting the above-mentioned evacuation information when a tsunami occurs, it is possible to inform people that a tsunami has occurred and that they will be in danger if they do not begin evacuation.

In addition, in the disaster prevention lighting device 1a, when the acquisition unit 5 acquires emergency information that an earthquake has occurred, the presentation control unit 73a controls the presentation unit 6a to present evacuation information for evacuating in response to the occurrence of an earthquake. For example, as shown in FIG. 6B, the display unit 62 of the presentation unit 6a displays evacuation information such as "Earthquake occurred (seismic intensity 6) arriving in 2 minutes" and "Risk of injury from falling objects." The sound output unit 61a of the presentation unit 6a outputs the evacuation information by sound. By presenting the above-mentioned evacuation information when an earthquake occurs, it is possible to inform people that an earthquake has occurred and that they will be harmed if they do not begin evacuation.

As described above, when an emergency occurs, the presentation unit 6a presents evacuation information, thereby informing people that an emergency has occurred and that they will be in danger if they do not begin evacuation. This can encourage people to begin evacuation behavior.

Here, the presentation unit 6a switches the presentation content according to the control of the presentation control unit 73a of the control circuit 7a.

The presentation unit 6a presents evacuation information as shown in FIG. 6A, and then presents evacuation information as shown in FIG. 6C. More specifically, the display unit 62 of the presentation unit 6a presents evacuation information as shown in FIG. 6A, and then displays evacuation information such as "Turn right at the exit to Evacuation Shelter A" and "1 km from here, 15 minutes on foot." By switching to evacuation information such as the above when a tsunami occurs, it is possible to show people how to evacuate and the time it will take to evacuate.

Furthermore, the presentation unit 6a presents evacuation information as shown in FIG. 6B, and then presents evacuation information as shown in FIG. 6D. More specifically, the display unit 62 of the presentation unit 6a presents evacuation information as shown in FIG. 6C, and then displays evacuation information such as "Evacuate to the on-site grounds" and "100 m from here, 5 minutes walk." By switching to evacuation information such as the above when an earthquake occurs, people who have begun evacuation actions can be evacuated reliably.

As described above, when an emergency occurs, the display unit 6a can switch the evacuation information to show people how to evacuate and the time required for evacuation. This allows people who have started evacuation actions to be able to evacuate reliably.

The sound output unit 61a can also switch the evacuation information to be output by voice in accordance with the control of the presentation control unit 73a, thereby outputting a large amount of evacuation information by voice in a short period of time.

In some emergency situations, the direction in which the disaster prevention lighting device 1a is installed may not be the direction suitable for evacuation. In this case, the presentation unit 6a presents, as evacuation information, that the evacuation direction is a different direction. More specifically, the display unit 62 of the presentation unit 6a displays "X" or "Opposite direction", as shown in FIG. 6E, to indicate that the direction in which the disaster prevention lighting device 1a is installed is not the evacuation direction. The sound output unit 61a of the presentation unit 6a outputs, by sound, the evacuation information that the evacuation direction is a different direction.

(4) Effects In the disaster prevention lighting device 1a according to the second embodiment, the display unit 6a displays, as evacuation information, a direction different from the evacuation direction. This makes it possible to proactively display that the direction in which the disaster prevention lighting device 1a is installed is not the evacuation direction, thereby reducing the risk of moving in the wrong direction. As a result, evacuation can be more reliably performed, thereby further reducing the risk of injury to people in the event of an emergency.

In the disaster prevention lighting device 1a according to the second embodiment, when emergency information is acquired by the acquisition unit 5, the flashing light source 271 flashes. This visually indicates the urgency, and encourages the person to start evacuation actions.

The disaster prevention lighting device 1a according to the second embodiment lights up a display panel 25 (guidance display section) that indicates an evacuation exit or evacuation direction. This allows the disaster prevention lighting device 1a to function as an evacuation light. In other words, in an emergency other than the stoppage of the external power source 91, it is possible to display an evacuation exit or evacuation direction and to present evacuation information in response to the occurrence of an emergency.

(Embodiment 3)
The disaster prevention lighting device 1b according to the third embodiment differs from the disaster prevention lighting device 1a according to the second embodiment (see FIG. 4) in that the display unit 2b and the display section 62b of the presentation section 6b are integrally provided as shown in FIG. 8. Note that, regarding the disaster prevention lighting device 1b according to the third embodiment, components similar to those of the disaster prevention lighting device 1a according to the second embodiment are denoted by the same reference numerals and will not be described.

(1) Disaster Prevention Lighting Device The disaster prevention lighting device 1b according to the third embodiment includes a lighting device 3b, an emergency power source 4b, an acquisition unit 5, a presentation unit 6b, and a control circuit 7b, as shown in Fig. 7. The disaster prevention lighting device 1b also includes a display unit 2b, a flashing light source unit 27, and a housing 85, as shown in Fig. 8. Note that, regarding the disaster prevention lighting device 1b according to the third embodiment, components similar to those of the disaster prevention lighting device 1a according to the second embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Disaster prevention lighting device 1b is an emergency light for indicating an emergency exit or evacuation direction of a building, similar to disaster prevention lighting device 1b according to embodiment 2 (see Figs. 3 and 4). Disaster prevention lighting device 1b is installed on a ceiling material of an emergency exit or evacuation route of a building.

Like the disaster prevention lighting device 1a according to embodiment 2 (see FIG. 3), the disaster prevention lighting device 1b is configured to acquire emergency information and evacuation information from the outside. In the example of FIG. 8, the disaster prevention lighting device 1 is configured to acquire emergency information and evacuation information from an emergency information transmission system 92 and an input device 93.

(2) Each component of the disaster prevention lighting device Each component of the disaster prevention lighting device 1b according to the third embodiment will be described below with reference to the drawings.

(2.1) Housing The housing 85b shown in Fig. 8 is formed in a rectangular parallelepiped shape and has a main body 86b and a plate 87b. The plate 87b has a main portion 871 and four side portions 872, similar to the plate 87 of the second embodiment (see Fig. 4).

(2.2) Display unit The display unit 2b shown in Fig. 8 includes a monitor 28 (guidance display unit). The display unit 2b displays a pictogram indicating an emergency exit on the monitor 28. The display unit 2b may also display a pictogram indicating an evacuation direction on the monitor 28. The display unit 2b is housed in the housing 85b such that the monitor 28 is exposed from a rectangular window 856 provided in the housing 85b.

7, the lighting device 3b is configured to light the flashing light source 271 of the flashing light source unit 27. The lighting device 3b includes a power supply circuit 31, a charging circuit 32, a monitor lamp 35, a second lighting circuit 38, and a switch 391.

(2.4) Presentation Unit The presentation unit 6b shown in FIG. 7 includes a sound output unit 61b and a display unit 62b, similar to the presentation unit 6a (see FIG. 3) of the second embodiment. The presentation unit 6b presents evacuation information, similar to the presentation unit 6a of the second embodiment. More specifically, the presentation unit 6b presents evacuation information in accordance with an instruction from a presentation control unit 73b (described later) of the control circuit 7b when an emergency occurs. The presentation unit 6b also presents emergency information. More specifically, the presentation unit 6b presents evacuation information regarding evacuation from an emergency in accordance with an instruction from a presentation control unit 73b (described later) when an emergency occurs. Note that, regarding the presentation unit 6b of the third embodiment, the same configuration and function as the presentation unit 6a of the second embodiment will not be described.

The display unit 62b has a display function for displaying emergency information and evacuation information. The display unit 62b includes a monitor 63b and a drive circuit as shown in FIG. 8. The monitor 63b is housed in a housing 85b. The housing 85b has a window 856 for the monitor 28 of the display unit 2b and the monitor 63b of the display unit 62b.

Similar to the presentation unit 6a in the second embodiment, the presentation unit 6b presents, as evacuation information, at least one of the following: the type of disaster, the type of harm suffered by people as a result of the disaster, the time until people are harmed by the disaster, the location of the evacuation site, the direction of the evacuation site, the distance to the evacuation site, the route to the evacuation site, and the travel time to the evacuation site.

(2.5) Control Circuit The control circuit 7b includes a lighting control unit 71b, a calculation unit 72b, a presentation control unit 73b, and a storage unit 74b, as shown in FIG. 7. The control circuit 7b includes a computer (including a microcomputer) equipped with a processor and a memory as a main component. The processor executes an appropriate program, and the computer functions as the control circuit 7b. The program may be pre-recorded in the memory, or may be provided via a telecommunication line such as the Internet, or recorded in a non-transitory recording medium such as a memory card. The storage unit 74b stores the same information as the storage unit 74a of the second embodiment.

(2.5.1) Illumination control unit The illumination control unit 71b shown in Fig. 7 controls the second lighting circuit 38. More specifically, the illumination control unit 71b compares the output voltage of the power supply circuit 31 with a threshold value, and determines that the power supply from the external power source 91 has stopped (power outage) when the output voltage is less than the threshold value. When the illumination control unit 71a determines that the external power source 91 is not in a power outage, it turns off the switch 391, and when it determines that the external power source 91 is in a power outage, it turns on the switch 391.

(2.5.2) Calculation unit The calculation unit 72b shown in Fig. 7, like the calculation unit 72a (see Fig. 3) of the second embodiment, calculates evacuation information using the emergency information input from the acquisition unit 5. Then, the calculation unit 72b outputs the evacuation information, which is the calculation result, to the presentation control unit 73b.

(2.5.3) Presentation control unit The presentation control unit 73b shown in Fig. 7 controls the presentation unit 6b, similar to the presentation control unit 73a (see Fig. 3) of the second embodiment. More specifically, the presentation control unit 73b controls the presentation unit 6b to present emergency information and evacuation information. When an emergency occurs, the presentation control unit 73b controls the sound output unit 61b and the display unit 62b to present at least one of the emergency information and the evacuation information.

(3) Operation Hereinafter, the operation of the disaster prevention lighting device 1b according to the third embodiment will be described with reference to FIGS. 9A to 9D.

In disaster prevention lighting device 1b, when acquisition unit 5 acquires emergency information that a tsunami has occurred, presentation control unit 73b of control circuit 7b controls presentation unit 6b to present evacuation information as shown in FIG. 9A. As shown in FIG. 9A, display unit 62b of presentation unit 6b displays the evacuation information "Tsunami occurred" together with a pictogram. Then, display unit 62b switches the display content to display the evacuation information "Risk of drowning" as shown in FIG. 9B. Furthermore, display unit 62b switches the display content to display the evacuation information "Arrival in 20 minutes". As described above, display unit 62b can display a lot of evacuation information even in a small display space by switching the evacuation information to be displayed while displaying pictograms in accordance with the control of presentation control unit 73b.

The sound output unit 61b of the presentation unit 6b can also switch between evacuation information in accordance with the control of the presentation control unit 73b, thereby outputting a large amount of evacuation information by voice in a short period of time.

In some emergency situations, the direction in which the disaster prevention lighting device 1b is installed may not be the direction suitable for evacuation. In this case, the presentation unit 6b presents, as evacuation information, that the evacuation direction is a different direction. More specifically, as shown in FIG. 9D, the display unit 62b of the presentation unit 6b displays an "X" instead of a pictogram, indicating that the direction in which the disaster prevention lighting device 1a is installed is not the evacuation direction, and further displays "opposite direction". The sound output unit 61b of the presentation unit 6b outputs evacuation information by voice that the evacuation direction is a different direction.

(3) Effects In the disaster prevention lighting device 1b according to the third embodiment, the monitor 28 of the display unit 2b and the monitor 63b of the display section 62b in the presentation section 6b are integrally provided. This makes it possible to display evacuation information in the event of an emergency more clearly. In particular, if the direction in which the disaster prevention lighting device 1b is installed is not suitable for evacuation, it is possible to prevent the pictograms indicating the evacuation exit or evacuation direction from being displayed. As a result, it is possible to more clearly indicate that the direction in which the disaster prevention lighting device 1b is installed is not suitable for evacuation.

(Embodiment 4)
In the fourth embodiment, a disaster prevention system 100 as shown in FIG. 10 will be described.

(1) Configuration As shown in Fig. 10, the disaster prevention system 100 according to the fourth embodiment includes a plurality of (two in Fig. 10) disaster prevention lighting devices 1c and a control device 101. In other words, the disaster prevention system 100 is a system in which a single control device 101 controls a plurality of disaster prevention lighting devices 1c.

(1.1) Control Device The control device 101 shown in FIG. 10 controls a plurality of disaster prevention lighting devices 1c. The control device 101 includes an acquisition unit 5c, a calculation unit 72c, a presentation control unit 73c, and a storage unit 74c. The control device 101 includes a computer (including a microcomputer) equipped with a processor and a memory as a main component. The computer functions as the control device 101 by the processor executing an appropriate program. The program may be pre-recorded in the memory, or may be provided via a telecommunication line such as the Internet, or recorded on a non-transitory recording medium such as a memory card.

The acquisition unit 5c acquires emergency information related to the occurrence of an emergency from the outside. More specifically, the acquisition unit 5c acquires emergency information from the emergency information transmission system 92 (see FIG. 1) and the input device 93 (see FIG. 1).

The calculation unit 72c calculates evacuation information using the emergency information. More specifically, since the multiple disaster prevention lighting devices 1c are installed in different locations, the calculation unit 72c calculates evacuation information for each disaster prevention lighting device 1c. The calculation unit 72c then outputs the evacuation information to the presentation control unit 73c.

The presentation control unit 73c controls the presentation unit 6c of each of the multiple disaster prevention lighting devices 1c. The presentation control unit 73c has a function of controlling each of the multiple disaster prevention lighting devices 1c to present evacuation information regarding evacuation in response to the emergency of the emergency information acquired by the acquisition unit 5c. More specifically, the presentation control unit 73c generates evacuation information regarding evacuation in response to the emergency information acquired by the acquisition unit 5c for each disaster prevention lighting device 1c. Then, the presentation control unit 73c outputs the evacuation information to each of the multiple disaster prevention lighting devices 1c by wired or wireless communication.

The memory unit 74c stores information used by the calculation unit 72c. The memory unit 74c stores information for each disaster prevention lighting device 1c.

(1.2) Disaster Prevention Lighting Device Each of the plurality of disaster prevention lighting devices 1c includes a light source unit 2, a lighting device 3, a display unit 6c, and a lighting control unit 71c, as shown in FIG. 10. Each of the plurality of disaster prevention lighting devices 1c is configured to be installed in a building. The light source unit 2, the lighting device 3, and the lighting control unit 71c are the same as the light source unit 2, the lighting device 3, and the lighting control unit 71 (see FIG. 1) of the first embodiment. With regard to the disaster prevention lighting device 1c according to the fourth embodiment, the same components as those of the disaster prevention lighting device 1 according to the first embodiment (see FIG. 1) are denoted by the same reference numerals, and the description thereof is omitted.

The presentation unit 6c shown in FIG. 10 presents evacuation information regarding evacuation in response to an emergency in the emergency information acquired by the acquisition unit 5c. More specifically, when an emergency occurs, the presentation unit 6c presents evacuation information in accordance with instructions from the presentation control unit 73c.

(2) Effects In the disaster prevention system 100 according to the fourth embodiment, when emergency information is acquired by the control device 101, evacuation information for evacuation in response to an emergency in the emergency information is presented by the disaster prevention lighting device 1c. This allows evacuation information in response to an emergency in the emergency information acquired from outside to be presented in a location where the disaster prevention lighting device 1c is installed, thereby reducing the risk of injury to people in the event of an emergency.

(3) Modifications In the disaster prevention system 100, it is not limited that both the calculation unit 72c and the presentation control unit 73c are provided in the control device 101. As a modification of the fourth embodiment, the calculation unit 72c and the presentation control unit 73c may be provided in each disaster prevention lighting device 1c. As another modification of the fourth embodiment, the calculation unit 72c may be provided in the control device 101, and the presentation control unit 73c may be provided in each disaster prevention lighting device 1c.

In the disaster prevention system 100, the number of disaster prevention lighting devices 1c is not limited to two. The disaster prevention system 100 may include a control device 101 and only one disaster prevention lighting device 1c, or three or more disaster prevention lighting devices 1c.

The disaster prevention system 100 is not limited to having a lighting device similar to the disaster prevention lighting device 1 according to embodiment 1 as the disaster prevention lighting device 1c. The disaster prevention system 100 may have a disaster prevention lighting device 1 according to a modified example of embodiment 1 as the disaster prevention lighting device 1c. Alternatively, the disaster prevention system 100 may have the disaster prevention lighting device 1a according to embodiment 2, or the disaster prevention lighting device 1b according to embodiment 3.

The disaster prevention system 100 according to each of the above-mentioned modified examples also achieves the same effects as the disaster prevention system 100 according to the fourth embodiment.

The above-described embodiments and modifications are merely a part of the various embodiments and modifications of the present invention. Furthermore, the embodiments and modifications can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved.

(Aspects)
The present specification discloses the following aspects.

The disaster prevention lighting device (1; 1a; 1b) according to the first aspect is a device installed inside a building. The disaster prevention lighting device (1; 1a; 1b) includes an acquisition unit (5) and a presentation unit (6; 6a; 6b). The acquisition unit (5) acquires emergency information from the outside. The emergency information is information related to the occurrence of an emergency. The presentation unit (6; 6a; 6b) presents evacuation information. The evacuation information is information related to evacuation in response to the emergency of the emergency information acquired by the acquisition unit (5).

According to the disaster prevention lighting device (1; 1a; 1b) of the first aspect, evacuation information for emergency situations obtained from emergency information externally can be displayed in the location where the disaster prevention lighting device (1; 1a; 1b) is installed, thereby reducing the risk of harm to people in the event of an emergency.

In the disaster prevention lighting device (1; 1a; 1b) according to the second aspect, in the first aspect, the emergency information is information transmitted from the emergency information transmission system (92) when an emergency occurs.

The disaster prevention lighting device (1; 1a; 1b) according to the second aspect can respond to emergency information transmitted from the emergency information transmission system (92), and therefore can provide evacuation information at an early stage. As a result, it is possible to further reduce the risk of harm to people in the event of an emergency.

In the disaster prevention lighting device (1; 1a; 1b) according to the third aspect, in the first or second aspect, the acquisition unit (5) acquires emergency information from the input device (93). The input device (93) accepts input of the emergency information.

The disaster prevention lighting device (1; 1a; 1b) according to the third aspect can obtain emergency information limited to a certain area that is not transmitted by the emergency information transmission system (92), for example, and therefore can present evacuation information more accurately.

In the disaster prevention lighting device (1; 1a; 1b) according to the fourth aspect, in any one of the first to third aspects, the presentation unit (6; 6a; 6b) has at least one of a display function for displaying evacuation information and an audio output function for outputting the evacuation information by audio.

The disaster prevention lighting device (1; 1a; 1b) according to the fourth aspect can more reliably present evacuation information.

In the disaster prevention lighting device (1; 1a; 1b) according to the fifth aspect, in any one of the first to fourth aspects, the presentation unit (6; 6a; 6b) presents, as evacuation information, at least one of the following: the type of disaster as an emergency, the type of harm suffered by people as a result of the disaster as an emergency, the time until people are harmed by the disaster as an emergency, the location of the evacuation site, the direction of the evacuation site, the distance to the evacuation site, the route to the evacuation site, and the travel time to the evacuation site.

The disaster prevention lighting device (1; 1a; 1b) according to the fifth aspect can present specific information as evacuation information, thereby further reducing the risk of harm to people in the event of an emergency.

In the disaster prevention lighting device (1a; 1b) according to the sixth aspect, in the fifth aspect, the presentation unit (6a; 6b) presents, as evacuation information, that the direction is different from the evacuation direction.

According to the disaster prevention lighting device (1a; 1b) of the sixth aspect, it is possible to proactively indicate that the direction in which the disaster prevention lighting device (1a; 1b) is installed is not the evacuation direction, and therefore it is possible to reduce the risk of moving in the wrong direction. As a result, evacuation can be more reliably achieved, and therefore it is possible to further reduce the risk of injury to people in the event of an emergency.

The disaster prevention lighting device (1a; 1b) according to the seventh aspect is any one of the first to sixth aspects and further includes a flashing light source (271). The flashing light source (271) flashes when emergency information is acquired by the acquisition unit (5).

The disaster prevention lighting device (1a; 1b) according to the seventh aspect can visually indicate urgency, encouraging people to begin evacuation actions.

The disaster prevention lighting device (1) according to the eighth aspect is any one of the first to seventh aspects, and further includes a light source (21) and a lighting circuit (33). The lighting circuit (33) lights up the light source (21) with power supplied from the emergency power source (4) when the external power source (91) is stopped.

According to the disaster prevention lighting device (1) of the eighth aspect, the disaster prevention lighting device (1) can function as an emergency lighting device. In other words, in an emergency other than the stoppage of the external power source (91), it is possible to ensure illuminance and to present evacuation information in the event of an emergency.

The disaster prevention lighting device (1a; 1b) according to the ninth aspect is any one of the first to seventh aspects and further includes a guidance display unit (display panel 25; monitor 28) and a lighting circuit (first lighting circuit 37). The guidance display unit indicates an evacuation exit or an evacuation direction. The lighting circuit lights up the guidance display unit.

According to the disaster prevention lighting device (1a; 1b) of the ninth aspect, the disaster prevention lighting device (1a; 1b) can function as an emergency light. In other words, in an emergency other than the stoppage of the external power source (91), it is possible to display an evacuation exit or evacuation direction, and to present evacuation information in response to the occurrence of an emergency.

The disaster prevention lighting device (1; 1a; 1b) according to the tenth aspect is any one of the first to ninth aspects and further includes a calculation unit (72; 72a; 72b). The calculation unit (72; 72a; 72b) calculates evacuation information using the emergency information acquired by the acquisition unit (5).

The disaster prevention lighting device (1; 1a; 1b) according to the tenth aspect can present highly accurate evacuation information according to the content of the emergency information.

In the disaster prevention lighting device (1; 1a; 1b) according to the eleventh aspect, in any one of the first to tenth aspects, the presentation unit (6; 6a; 6b) presents the emergency information acquired by the acquisition unit (5).

The disaster prevention lighting device (1; 1a; 1b) according to the eleventh aspect can present both emergency information and evacuation information, making it possible to better inform people of the emergency situation.

A disaster prevention system (100) according to a twelfth aspect includes a disaster prevention lighting device (1c) and a control device (101). The disaster prevention lighting device (1c) is installed in a building. The control device (101) controls the disaster prevention lighting device (1c). The control device (101) has an acquisition unit (5c). The acquisition unit (5c) acquires emergency information from the outside. The emergency information is information related to the occurrence of an emergency. The disaster prevention lighting device (1c) has a presentation unit (6c). The presentation unit (6c) presents evacuation information. The evacuation information is information related to evacuation in response to an emergency of the emergency information acquired by the acquisition unit (5c).

According to the disaster prevention system (100) of the twelfth aspect, evacuation information for emergencies obtained from emergency information from outside can be presented in a place where the disaster prevention lighting device (1c) is installed, thereby reducing the risk of harm to people in the event of an emergency.

1, 1a, 1b, 1c Disaster prevention lighting equipment 21 Light source 25 Display panel (guidance display section)
271 Flashing light source 28 Monitor (guidance display unit)
33 Lighting circuit 37 First lighting circuit 4, 4a, 4b Emergency power supply 5, 5c Acquisition unit 6, 6a, 6b, 6c Presentation unit 72, 72a, 72b, 72c Calculation unit 92 Emergency information transmission system 93 Input device 100 Disaster prevention system 101 Control device

Claims (11)

A disaster prevention lighting device installed in a building,
an acquisition unit that acquires emergency information relating to the occurrence of an emergency from an external source;
a presentation unit that changes information to be presented based on the emergency information acquired by the acquisition unit,
The presentation unit is
A function that displays pictograms under normal circumstances,
When the acquisition unit acquires the emergency information, if the information normally presented by the presentation unit is not suitable as evacuation information based on the emergency information, a function of displaying, as the evacuation information, a graphic indicating that the direction in which the disaster prevention lighting device is installed is a direction different from the evacuation direction is provided.
Disaster prevention lighting equipment. The emergency information is information transmitted from an emergency information transmission system when the emergency occurs.
2. The disaster prevention lighting device according to claim 1. the acquiring unit acquires the emergency information from an input device that accepts input of the emergency information.
3. A disaster prevention lighting device according to claim 1 or 2. The presentation unit further has a voice output function of outputting the evacuation information by voice.
The disaster prevention lighting device according to any one of claims 1 to 3. The presentation unit presents, as the evacuation information, at least one of a type of disaster as the emergency situation, a type of harm to people due to the disaster as the emergency situation, a time until people will be harmed by the disaster as the emergency situation, a location of an evacuation site, a direction of the evacuation site, a distance to the evacuation site, a route to the evacuation site, and a travel time to the evacuation site.
The disaster prevention lighting device according to any one of claims 1 to 4. The emergency information acquisition unit may further include a flashing light source that flashes when the emergency information is acquired by the acquisition unit.
The disaster prevention lighting device according to any one of claims 1 to 5. A light source;
and a lighting circuit for lighting the light source with power supplied from an emergency power source when the external power source is stopped.
The disaster prevention lighting device according to any one of claims 1 to 6. A guidance display unit that indicates an evacuation exit or an evacuation direction;
A lighting circuit for lighting the guidance display unit is further provided.
The disaster prevention lighting device according to any one of claims 1 to 6. The system further includes a calculation unit that calculates the evacuation information by using the emergency information acquired by the acquisition unit.
The disaster prevention lighting device according to any one of claims 1 to 8. The presentation unit presents the emergency information acquired by the acquisition unit.
The disaster prevention lighting device according to any one of claims 1 to 9. Disaster prevention lighting equipment installed in the building;
A control device for controlling the disaster prevention lighting device,
The control device includes:
An acquisition unit that acquires emergency information related to the occurrence of an emergency from an external source,
The disaster prevention lighting device is
a presentation unit that changes information to be presented based on the emergency information acquired by the acquisition unit;
The presentation unit is
A function that displays pictograms under normal circumstances,
When the acquisition unit acquires the emergency information, if the information normally presented by the presentation unit is not suitable as evacuation information based on the emergency information, a function of displaying, as the evacuation information, a graphic indicating that the direction in which the disaster prevention lighting device is installed is a direction different from the evacuation direction is provided.
Disaster prevention system.

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