Evacuation route display device

Abstract

To provide an evacuation route display device capable of assisting in selecting a safe evacuation route for evacuation.SOLUTION: An evacuation route display device installed in the middle of a passageway includes: a display unit; a receiver capable of receiving sensor information from a plurality of fire detectors and fire receivers, including alarm information indicating the occurrence of a fire and address information; a memory unit capable of storing the received information; and a control unit that performs calculations. The memory unit stores in advance information on the internal structure including a passageway and an evacuation opening of a building floor on which the evacuation route display device is installed, information on the installation position of the plurality of fire detectors on the building floor, and the evacuation route from the evacuation route display device to the evacuation opening on the building floor. When receiving the alarm information from the fire detectors by the receiver, the control unit selects a plurality of evacuation routes based on the relationship between the installation position of the fire detector that sent out the alarm information and the stored evacuation routes, and displays the selected plurality of evacuation routes on the display screen of the display unit.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an evacuation route display device, and more particularly to an evacuation route display device that displays an evacuation route and supports evacuation in the event of a fire in a facility such as a building or an underground mall. [Background technology]

[0002] When a disaster such as a fire occurs in a building or underground mall and people inside start to evacuate, they often start to evacuate without knowing detailed information such as the location of the fire. Therefore, when there are multiple evacuation routes within a facility, people may not be able to make the appropriate decision on which evacuation route to choose.

[0003] Conventionally, an invention has been proposed in which a pre-defined space is divided into multiple areas, with sensors and transmitters installed in each area, the area where a disaster has occurred is identified using the sensors, and evacuation guidance information is created to avoid that area and guide people to evacuation exits, and the evacuation guidance information is output from transmitters installed in the areas and received by a mobile phone or the like, which then displays an evacuation guidance map showing evacuation routes (see, for example, Patent Document 1). Regarding indoor evacuation guidance, an invention has been proposed for a disaster prevention support system that uses a mobile terminal to communicate one's own location information, fire location information, and evacuation routes to disaster prevention personnel (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-8591 A [Patent Document 2] JP 2015-153177 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the invention of the evacuation guidance system described in Patent Document 1, although multiple evacuation routes are presented, it is left to the evacuees to decide which evacuation route will lead them to the safest evacuation exit. As a result, evacuees are forced to evacuate with anxiety because they have to choose an evacuation route without a clear reason, and there is a problem that they may not be able to calmly decide because it is an emergency situation and may mistakenly choose a relatively risky evacuation route.

[0006] In addition, the invention of the disaster prevention support system described in Patent Document 2 can display a map showing the current location of a mobile device and an evacuation route on the display unit of the mobile device, but the orientation of the map may not match the orientation of the mobile device, and even if you look at the map displayed on the display unit, you may not be able to intuitively recognize which direction to evacuate in. In addition, with this system, there is also the problem that evacuees cannot calmly make decisions because it is an emergency situation, and they may mistakenly select an evacuation route that is relatively risky.

[0007] The present invention has been made with attention to the above-mentioned problems in mind, and its purpose is to provide an evacuation route display device that can assist in selecting the safest evacuation route from among multiple evacuation routes, thereby allowing evacuees to evacuate with peace of mind. Another object of the present invention is to provide an evacuation route display device that allows a person to intuitively recognize in which direction they should evacuate by looking at the evacuation route information displayed on the display unit. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides: An evacuation route display device having a display unit having a display screen, a receiving unit capable of receiving detector information from a plurality of fire detectors and / or fire receivers, the detector information including alarm information indicating the occurrence of a fire and address information, a storage unit capable of storing the received information, and a control unit for performing calculations, the device being disposed midway along a passageway, the storage unit prestores information on an internal structure including a passageway and an emergency exit of a building floor on which the evacuation route display device is installed, installation position information of the plurality of fire detectors on the building floor, and an evacuation route from the evacuation route display device to the emergency exit of the building floor, The control unit is configured to have the function of, when the receiving unit receives the alarm information from the fire detector, selecting a plurality of evacuation routes based on the relationship between the installation location of the fire detector that sent the alarm information and the stored evacuation routes, and displaying the selected plurality of evacuation routes on the display screen of the display unit.

[0009] According to the evacuation route display device having the above-described configuration, multiple evacuation routes are selected based on the relationship between the installation location of the fire detector that sent out the alarm information and the pre-stored evacuation routes, and the selected multiple evacuation routes are displayed on the display screen of the display unit, thereby assisting evacuees in selecting the safest evacuation route from among multiple evacuation routes. Furthermore, because the evacuation route display device is installed in the building's corridors, the orientation of the map matches the direction of the actual evacuation exits on each floor, so evacuees can intuitively recognize which direction to evacuate to by looking at the evacuation route information displayed on the display. This eliminates the risk of selecting the wrong evacuation route even in an emergency, and helps evacuees select a safer evacuation route.

[0010] Here, preferably, the storage unit stores in advance a predetermined calculation formula for calculating a value for evaluating the safety of each evacuation route, The control unit is configured to calculate an evaluation value for each evacuation route using the specified calculation formula based on the relationship between the installation location of the fire detector that sent the alarm information and the evacuation route, and to display the multiple evacuation routes on the display screen of the display unit so that they can be distinguished according to the evaluation value by superimposing it on information about the internal structure. According to this configuration, an evaluation value is calculated based on a predetermined formula for calculating a value evaluating the safety of an evacuation route, and multiple evacuation routes are displayed in a distinguishable manner according to the calculated evaluation value, so that even if multiple evacuation routes are displayed, it is possible to recognize which evacuation route is relatively safe, and a user can evacuate with peace of mind by selecting the route with a clear reason. Also, the reliability of the displayed evacuation routes can be increased.

[0011] It is also preferable that the specified calculation formula is an equation that uses the distance between the installation location of the fire detector that sent out the alert information and the nearest point on the evacuation route as a parameter, and that derives a larger evaluation value as the distance becomes larger. According to this configuration, evacuation routes that pass through areas close to the source of the fire are displayed in a manner that allows them to be distinguished from those that do not, so that evacuees who look at the display and select an evacuation route can evacuate safely.

[0012] Furthermore, preferably, the control unit is configured to cause an evacuation route having a higher evaluation value to be displayed on the display screen of the display unit in a manner that is more visually appealing. According to this configuration, even if a plurality of evacuation routes are displayed, it is possible to easily determine which evacuation route to select, and to evacuate safely.

[0013] Furthermore, it is desirable that the control unit is configured to not display on the display screen of the display unit any evacuation route for which the distance between the installation location of the fire detector that sent the alert information and the nearest point of the evacuation route is less than a predetermined value, regardless of the evaluation value. According to this configuration, evacuation routes where the distance between the fire detector that sent out the alarm information and the nearest point on the evacuation route is less than a specified distance are not displayed, thereby preventing evacuees from mistakenly selecting a dangerous route that passes through a point close to the source of the fire.

[0014] Also, preferably, the evacuation route display device further includes an audio output unit capable of outputting audio, The control unit is configured to cause the voice output unit to output voice guidance corresponding to the evaluation value. According to this configuration, the audio output unit outputs audio guidance according to the evaluation value, so that even evacuees who are located far away from the evacuation route display device can determine the evacuation direction. Effect of the Invention

[0015] According to the evacuation route display device of the present invention, it is possible to support evacuees in selecting the safest evacuation route from among multiple evacuation routes, allowing them to evacuate with peace of mind. In addition, it has the effect of allowing evacuees to intuitively recognize in which direction they should evacuate by looking at the evacuation route information displayed on the display unit. [Brief description of the drawings]

[0016] [Figure 1] 1 is a system configuration diagram showing the configuration of an embodiment of an evacuation support system using a sub-receiver as an evacuation route display device of the present invention. [Diagram 2] 1 is a block diagram showing an example of a configuration of an evacuation route display device according to an embodiment; [Diagram 3] FIG. 1A is a diagram showing an example of a map displayed on a display unit of an evacuation route display device, and FIG. 1B is a diagram showing an example of an evacuation route. [Figure 4] (A) is a diagram showing an example of the location of a fire on a map, and (B) is a diagram showing the distance to the nearest point on an evacuation route. [Diagram 5] 13(A) to 13(C) are diagrams showing examples of evacuation routes according to recommendation levels displayed on a display unit of an evacuation route display device. [Figure 6] FIG. 1 is a diagram showing examples of distances and dimensions of various parts inside a building. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings in which a sub-receiver of a fire alarm system is used to configure an evacuation route display device according to the present invention. Fig. 1 is a block diagram showing a schematic configuration of a fire alarm system equipped with a sub-receiver as an evacuation route display device. As shown in Figure 1, the fire alarm system of this embodiment comprises a plurality of fire sensors 11 arranged at predetermined locations within a predetermined area of ​​a facility such as a building, a fire receiver 13 that receives fire detection signals from the fire sensors 11 via a sensor line 12, and a sub-receiver 15 as an evacuation route display device that displays the same information as the fire receiver 13 based on information signals transmitted from the fire receiver 13 via a transmission line 14.

[0018] When the fire detector 11 detects the occurrence of an abnormal phenomenon associated with a fire, such as heat, smoke, or flame, it transmits a fire detection signal (alert information) to the fire receiver 13 via the detector line 12. The fire detection signal from the fire detector 11 may be configured to be transmitted to the fire receiver 13 via a repeater. The repeater is also connected to lines to which a district bell and smoke control and exhaust equipment are connected. Also, it is preferable that the fire detector 11 is a type of detector that adds its own communication address to the fire detection signal. The fire receiver 13 refers to information stored in its own storage device (such as a list showing the correspondence between the detector address and the installation location) and identifies the location of the fire based on the communication address of the fire detector included in the fire detection signal.

[0019] The fire receiver 13 is installed in the disaster prevention center or control room of the building to be monitored, and centrally monitors the operation of the fire detectors 11 installed in various locations. When activated, it has the following functions: to output a fire alarm by sounding the fire receiver itself and sound devices such as bells in each district, to perform linked control of the district bell ringing and smoke exhaust, and to display the location of the fire on the display. The auxiliary receiver 15, like the fire receiver 13, has the function of displaying the location of a fire on the display unit and the function of outputting a fire alarm sound, and is installed so that the fire monitoring status can be checked in places other than the disaster prevention center or control room where the fire receiver 13 is installed.

[0020] Furthermore, the fire alarm system of this embodiment is configured so that a fire detection signal (alert information) from the fire detector 11 in the area in which the sub-receiver 15 is installed is transmitted to the sub-receiver 15 via the signal line 16. Therefore, the sub-receiver 15 can know where a fire has occurred within the area (floor) in which it is installed. In Fig. 1, the arrows indicate the direction of information transmission. Also, in Fig. 1, a sub-receiver 15 is provided in each area (floor), but there are also areas (floors) where a sub-receiver 15 is not provided.

[0021] FIG. 2 shows an example of the configuration of the sub-receiver 15. 2, the sub-receiver 15 includes a first receiving section 21 for receiving an information signal from the fire receiver (main receiver) 13, a second receiving section 22 for receiving a detection signal or a fire information signal from the fire detector 11, a control section 23 with a calculation function consisting of a CPU (central processing unit) and the like, a memory section 24 for storing a program executed by the CPU (23), map information such as a floor plan, information on the installation location of the fire detector, a calculation formula for calculating the safety level (recommended level) of an evacuation route, and the like, a touch panel display 25 with an input section 25A and a display section 25B, a speaker 26 capable of outputting sound, a power supply section 27 for supplying a power supply voltage, and the like. The installation location information of the fire detector is stored in the memory section 24 in association with address information for communication with the fire receiver that is assigned to the fire detector.

[0022] The control unit 23 also includes a fire information processing unit 31 that displays fire-related information similar to the information displayed on the display unit of the fire receiver on the display unit 25B based on information from the fire receiver (main receiver) 13, a fire location determination unit 32 that determines the location of a fire based on an information signal from the fire detector 11, a route recommendation level calculation unit 33 that calculates the safety level, i.e., the recommendation level, of each evacuation route based on the location information determined by the fire location determination unit 32 and map information of the area (floor), a map display processing unit 34 that displays the evacuation routes on the display unit 25B in a manner corresponding to the calculated recommendation level, an evacuation route setting unit 35 that recognizes the evacuation route inputted from the input unit 25A and stores it in the memory unit 24, and an audio output processing unit 36 ​​that drives the speaker 26 to output audio.

[0023] Fig. 3 shows an example of the layout of one area (floor) in which the sub-receiver 15 is installed. In Fig. 3, the areas designated by the symbols A1, A2, A3, and A4 are corridors (passages), and the areas designated by the symbols E1, E2, E3, and E4 are emergency exits. As shown in Fig. 3(A), the sensors 11 are distributed and installed in the area (floor), and the sub-receiver 15 is installed on one wall of the corridor (passage) A3. Map information indicating the layout of the area (floor) as described above, the installation positions of the sub-receiver itself, and the installation positions of the fire detectors is stored in advance in the memory unit 24 of the sub-receiver 15. The sub-receiver 15 of this embodiment has a function for displaying a map and an evacuation route on the display unit 25B, but when displaying the evacuation route, the detectors do not have to be displayed.

[0024] Next, the function of the sub-receiver 15 of this embodiment relating to displaying an evacuation route will be described with reference to Figs. 3 to 6. First, a method for determining a recommended evacuation route will be described. When multiple sub-receivers are provided in a fire alarm system, the maps stored in each sub-receiver are different. Therefore, the evacuation route will also be different for each sub-receiver. Therefore, the sub-receiver of this embodiment is configured to have a route setting mode (function) in which a map is displayed on the display unit 25B of the touch panel display 25, and the route to be set as an evacuation route is recognized by tracing the route on the displayed map with a finger, and the route is stored in the storage unit 24. With this function, for example, in the map of Fig. 3, four routes R1, R2, R3, and R4 are set as shown in Fig. 3(B). If the design drawing of the floor is available in advance, the evacuation routes may be set on the map at the time of shipment from the factory and stored in the storage unit 24.

[0025] The determination of evacuation routes in this embodiment is characterized in that, first, the longer the distance from the source of the fire to the shortest position (closest point) of multiple pre-set evacuation routes, the safer the route is, and, second, the shorter the length of the evacuation route, the safer the route is. In addition, if there are special circumstances, such as when some of the multiple evacuation routes have poor visibility, when there are fire doors along the way, or when a particular evacuation exit is crowded with many evacuees, these conditions will be added to the decision.

[0026] For example, in Fig. 4(A), if detector D1 in the upper right corner detects a fire, the distances l1, l2, l3, and l4 from detector D1 to the closest points of the four routes R1, R2, R3, and R4 (hereafter referred to as the nearest point distances) are l1>l2>l3>l4, as can be seen from Fig. 4(B). Also, since the lengths of the routes are R4>R3>R1>R2, if there are no other constraints (good or bad visibility, fire doors), routes R1 and R2 will be judged to be relatively safe, and route R4 will be judged to be dangerous.

[0027] Furthermore, if there are fire doors along the way, a route that passes through an area where the fire doors can prevent the spread of a fire is rated as safe. A possible method for evaluating the safety level based on the congestion level of an emergency exit is for example for a staff member at the disaster prevention center to check video from a security camera installed near the emergency exit, input the congestion level information from the fire receiver (main receiver) 13 and transmit it to the secondary receiver 15, and the safety level is calculated taking into account the congestion level information received by the secondary receiver 15. The secondary receiver 15 may be provided with a function that enables direct input of information regarding the congestion level of an emergency exit.

[0028] Next, a method of displaying an evacuation route on the display unit 25B based on the safety level determined as described above will be described. In this embodiment, the evacuation route is displayed by an arrow indicating the evacuation direction, and multiple evacuation routes are displayed superimposed on one map so that the higher the safety level, the clearer the route is. The arrow indicating the evacuation direction may be displayed as a moving image extending from the starting point to the end point of the evacuation exit. In addition to displaying the evacuation route on the display unit 25B, audio guidance such as "Of the north and east side evacuation exits, please head to the north side evacuation exit as much as possible" may be played from the speaker 26.

[0029] Specific examples of displays that become clearer the higher the level of safety are as shown in Figure 5(A), a method in which the arrow indicating the evacuation direction is displayed thicker the higher the level of safety, as shown in (B), a method in which the arrow indicating the evacuation direction flashes and the flashing cycle of the arrow is shortened the higher the level of safety, as shown in (C), a method in which the arrow indicating the evacuation direction is displayed as a dotted line and the number of line segments per unit length increases the lower the level of safety (when the number of line segments is 1, it is a solid line and the safety level is highest), or a combination of the above methods, or when displayed as a video, the speed of change is made faster the higher the level of safety (increasing the frame rate).

[0030] Furthermore, as another display mode of the arrows indicating the evacuation direction, each arrow may be displayed in a different color. In this case, for example, corresponding to the lighting colors of traffic signals, it is possible to display the arrows in blue if the route is highly safe, in red if evacuation itself is possible but there may be danger, and in yellow if it is somewhere in between. Alternatively, in an urgent situation, the arrows may be displayed in red, which gives a strong visual impression and indicates a high degree of safety, so that evacuees can determine the evacuation direction at a glance of the display screen. This is because if the arrow is clear, it can be intuitively recognized that the system recommends selecting that route. Furthermore, the above display modes using colors may be combined with the display modes of Figs. 5(A) to (C) to display the arrows.

[0031] Next, an example of a formula for calculating the safety level, i.e., the recommendation level, of each evacuation route (Equation 1) will be described. In the following description, the identification symbol of each evacuation route will be denoted as j, and the recommendation level of evacuation route j will be denoted as Index(j). The larger the value of Index(j) obtained by the following calculation formula, the higher the safety level, i.e., the recommendation level.

number

[0032] The reason why X2 is the inverse of the length of the evacuation route is because the longer the evacuation route, the greater the danger, so taking the inverse is effective in underestimating the safety level. Similarly, for X5, the more crowded the evacuation exit, the greater the danger, so it is better to use the inverse of the number of people per unit area as a parameter. The weighting coefficient Wij is multiplied so that the more important the parameter, the greater the influence on the calculated value, thereby enabling a more accurate calculation of the safety level. Which parameter should have a higher importance depends on conditions such as the structure of the target building and the installation position of the secondary receiver 15, so it is advisable to adjust and set it for each secondary receiver 15.

[0033] The condition coefficient W'ij can be, for example, whether the floor is the same as the floor where the fire started, or above, or below. Since toxic gases may be generated during a fire and flow from upper floors to lower floors, if the floor is the same as or above the floor where the fire started, it is set to "1", and if it is below, it is set to "0". However, this is assuming a ground floor, and in the case of a basement floor, it is possible to define 0 and 1 in the opposite way to the above, taking into consideration that if the floor is the same as or above the floor where the fire started, it is preferable to reach the exit immediately, and if the floor is below the floor where the fire started, it is necessary to reach the exit by passing through the floor where the fire started. The parameter X is not limited to the above five types. Also, instead of using the distance value as it is for X1 and X2, the ratio to the maximum one among multiple routes may be used.

[0034] Furthermore, the above formula may include coefficients or parameters other than W'ij and Wij, such as the time elapsed since the first fire was detected or the number of detectors that detected the fire. Specifically, a coefficient a(j,t) that changes over time can be set, with a(j,t) = 1 when a fire first occurs, and when a signal is received from the (main) receiver that a heat or smoke detector on the route that is closest to the escape exit has responded, the route is deemed undesirable and the value can be changed to a value closer to 0. Also, if there are many detectors on the route, the value can be changed to a value closer to 0 once the number of responding detectors reaches a certain level. Furthermore, depending on the proportion of responding detectors, a(j,t) can be gradually changed from 1 to 0 as the proportion increases.

[0035] Next, a specific example of calculating the recommendation level Index(j) using the above formula will be described. As an example, a case will be described in which the distances and dimensions of each part in the map in Fig. 3(A) are as shown in Fig. 6, a fire is detected by detector D1 on the floor where the sub-receiver 15 is installed, and parameters X1, X2, and X3 are used. The identification symbol j of the evacuation route is the same number as the subscript of the evacuation routes R1 to R4 in Fig. 4(B). The value of X1, which corresponds to the distance from the source of the fire to the nearest point of each of the evacuation routes R1 to R4, is 100m-15m=85m for evacuation route R1, and √(45^2+65^2)=79m for the distance from the source of the fire to the end point of the route (emergency exit E4), so the shorter value of 79m is used. Additionally, the value for evacuation route R2 is √(45^2+65^2)=79m, the value for evacuation route R3 is 10m+30m+5m=45m, and the value for evacuation route R4 is 10m.

[0036] Next, with regard to the value of X2, which is the reciprocal of the distance (length) of each evacuation route R1 to R4, the distance of evacuation route R1 is 30m + 30m = 60m, so the reciprocal is 1 / 60, the distance of evacuation route R2 is 30m, so the reciprocal is 1 / 30, the distance of evacuation route R3 is 70m, so the reciprocal is 1 / 70, and the distance of evacuation route R4 is 70m + 30m = 100m, so the reciprocal is 1 / 100. For X3, which indicates visibility, if there is a point on the route where the source of the fire can be seen, it is set to "0", and if there is no point on the route where the source of the fire can be seen, it is set to "1". Then, evacuation route R1 will be "1", evacuation route R2 will be "1", evacuation route R3 will be "0", and evacuation route R4 will be "0". In addition, the floor where the sub-receiver is installed is the same as the floor where the source of the fire is located, so the condition coefficient W'ij is "1".

[0037] Here, the maximum value of X1 is 79 (m), while the maximum value of X2 is 1 / 30 = 0.033 (1 / m), and as is, there is an extreme difference in the degree of influence on the value of Index(j). To reduce this difference, a weighting coefficient Wij is multiplied, but setting the weighting coefficient Wij is difficult. Therefore, for X1 and X2, we rewrite it as the ratio to the maximum value of each route. Then, the value of X1 is 79 / 79 = 1 for evacuation routes R1 and R2, 45 / 79 = 0.57 for evacuation route R3, and 10 / 79 = 0.13 for evacuation route R4. The value of X2 is the largest at the inverse of evacuation route R2, 1 / 30, so if this is set to "1", it will be 30 / 60 = 0.5 for evacuation route R1, 30 / 70 = 0.43 for evacuation route R3, and 30 / 100 = 0.3 for evacuation route R4. Since the maximum value for all is "1", the influence on the value of Index(j) will be roughly the same. If you want to slightly increase the influence of either X1 or X2, simply increase the weighting coefficient Wij for the one you want to increase.

[0038] When the weighting coefficients Wij are all set to "1," the above values ​​of X1, X2, and X3 are substituted into the formula in [Mathematical Expression 1] to calculate the value of the recommendation level Index(j), and the recommendation level of evacuation route R1 (j=1) is Index(1) = 1.0 + 0.5 + 1 = 2.5, the recommendation level of evacuation route R2 (j=2) is Index(2) = 1.0 + 1.0 + 1 = 3.0, the recommendation level of evacuation route R3 (j=3) is Index(3) = 0.57 + 0.43 + 0 = 1.0, and the recommendation level of evacuation route R4 (j=4) is Index(4) = 0.13 + 0.3 + 0 = 0.43. From the above calculations, the recommendation level of evacuation route R2 is the highest, followed by the recommendation levels of evacuation route R1, R3, and R4. If we were to not display evacuation route R4, which has the shortest distance from the fire source to the nearest point of each of the evacuation routes R1 to R4, i.e., the most dangerous, then the display would be as shown in Figures 5(A) to 5(C).

[0039] As described above, according to the above embodiment, an evacuee who sees the evacuation route displayed on the display unit 15B of the sub-receiver 15 can evacuate in a safe manner by selecting the safest evacuation route from among multiple evacuation routes of his / her own volition. In addition, because the sub-receiver 15 is installed beside a passageway, the evacuee can intuitively determine the positional relationship between the evacuation exit displayed on the map and the actual evacuation exit in the building, and therefore can accurately and quickly determine the evacuation direction.

[0040] Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments and can be modified as appropriate without departing from the gist of the present invention. For example, in the above embodiment, a display unit that displays an evacuation route is provided in the sub-receiver 15, but a display unit may be provided in disaster prevention equipment such as a fire hydrant door installed on a wall of a passageway or a composite device in which a transmitter, an alarm lamp, and a speaker are integrated into a single housing, or a separate dedicated display device may be installed on the wall of the passageway to display the evacuation route.

[0041] In addition, in the above embodiment, the detection signal from the detector 11 is directly input to the auxiliary receiver 15, but the auxiliary receiver 15 may be configured to display the above-mentioned evacuation route based on the alarm information received from the fire receiver (main receiver) 13 and the location information of the detector that triggered the alarm. Furthermore, the calculation of the recommendation level using the above-mentioned formula [Equation 1] may be performed by the fire receiver 13, and the result may be transmitted to the auxiliary receiver 15 to be displayed on the display unit.

[0042] In addition, in the above embodiment, evacuation assistance is provided by displaying the evacuation route only on the display device, but it is also possible to install multiple sets of red and green lamps in the corridor on the side where the secondary receiver 15 is not installed, and send a signal from the secondary receiver 15 to turn on the green lamps in safe directions and turn on the red lamps in dangerous directions. Furthermore, the brightness of the emergency exit lights installed at the emergency exits may be adjusted so that safe emergency exit lights are brightly lit and dangerous emergency exit lights are dimly lit or turned off by sending a signal from the secondary receiver 15 via wired or wireless communication. In this way, safe directions can be notified to evacuees in passages where the secondary receiver 15 is not installed. [Explanation of symbols]

[0043] 11 Fire detector (sensor) 12 Sensor Line 13 Fire alarm receiver 14 Transmission Lines 15 Secondary Receiver 16 Signal Line 21 First receiving unit 22 Second Receiving Unit 23 Control Unit 24 Memory section 25 Touch Panel Display 26 Speaker (audio output section) 27 Power supply section

Claims

1. An evacuation route display device having a display unit having a display screen, a receiving unit capable of receiving detector information from a plurality of fire detectors and / or fire receivers, the detector information including alarm information indicating the occurrence of a fire and address information, a storage unit capable of storing the received information, and a control unit for performing calculations, the device being disposed midway along a passageway, the storage unit prestores information on an internal structure including a passageway and an emergency exit of a building floor on which the evacuation route display device is installed, installation position information of the plurality of fire detectors on the building floor, and an evacuation route from the evacuation route display device to the emergency exit of the building floor, The control unit has a function, when it receives the alarm information from the fire detector by the receiving unit, to select a plurality of evacuation routes based on the relationship between the installation location of the fire detector that sent the alarm information and the stored evacuation routes, and to display the selected plurality of evacuation routes on the display screen of the display unit.

2. The storage unit stores in advance a predetermined calculation formula for calculating a value for evaluating the safety of each evacuation route, The evacuation route display device according to claim 1, characterized in that the control unit calculates an evaluation value for each evacuation route using the predetermined calculation formula based on the relationship between the installation location of the fire detector that sent the alert information and the evacuation route, and displays the multiple evacuation routes on the display screen of the display unit so that they can be distinguished according to the evaluation value by superimposing it on the information on the internal structure.

3. The evacuation route display device according to claim 2, characterized in that the predetermined calculation formula is a formula that uses the distance between the installation location of the fire detector that sent out the alert information and the nearest point on the evacuation route as a parameter, and derives a larger evaluation value as the distance is larger.

4. 4. The evacuation route display device according to claim 2, wherein the control unit causes the display screen of the display unit to display an evacuation route with a higher evaluation value in a manner that makes the route more visually appealing.

5. The control unit is 5. An evacuation route display device as claimed in any one of claims 2 to 4, characterized in that for evacuation routes where the distance between the installation location of the fire detector that sent the alert information and the nearest point of the evacuation route is less than a predetermined value, the evacuation route is not displayed on the display screen of the display unit regardless of the evaluation value.

6. The evacuation route display device further includes an audio output unit capable of outputting audio, The evacuation route display device according to claim 2 , wherein the control unit causes the audio output unit to output audio guidance corresponding to the evaluation value.

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