Disaster prevention vehicles

Abstract

This invention provides a disaster relief vehicle that can improve the work efficiency of crew members by increasing the display function and visibility of the unit name indicator light installed in the cab. [Solution] The disaster prevention vehicle 1 comprises a cab 2 having side entrance / exit openings 21, 22 and side doors 23, 24 for opening and closing the entrance / exit openings 21, 22, as well as a driving device 4 and a work device 5. The disaster prevention vehicle 1 also includes an information display unit 6 attached to the rear side door 24 and a mounting control device that switches the display content of the information display unit 6. The information display unit 6 has an information display mode that displays information and a window mode that does not display information, making it possible to clearly see the outside from inside the cab 2.

Description

Technical Field

[0001] The present invention relates to a disaster prevention vehicle equipped with equipment necessary for rescue activities and firefighting activities.

Background Art

[0002] Conventionally, when disasters such as fires, accidents, and earthquakes occur, disaster prevention vehicles equipped with equipment necessary for rescue activities and firefighting activities have been used (for example, see Patent Document 1). Patent Document 1 discloses a disaster prevention vehicle called a rescue work vehicle. An example of such a conventional disaster prevention vehicle will be described in detail below.

[0003] FIG. 10 is a side view of a conventional disaster prevention vehicle 100. As shown in FIG. 10, the conventional disaster prevention vehicle 100 includes a cab 200 disposed at the front of the vehicle, a loading bay 300 for storing materials and equipment disposed behind the cab 200, and working equipment 500 such as a crane device. The cab 200 includes a double-cab type cab body 200a and an extended roof portion 200b attached to the upper end portion of the cab body 200a. On the side surface of the cab body 200a, a front side entry / exit opening 201 and a rear side entry / exit opening 202 are provided. A front side door 203 is attached to the front side entry / exit opening 201 so as to be openable and closable. Further, a rear side door 204 is attached to the rear side entry / exit opening 202 so as to be openable and closable. The rear side door 204 has a window portion 204a.

[0004] On the side surface of the extended roof portion 200b, a team name display lamp 205 is provided. This team name display lamp 205 is used to display the team name of the rescue team arranged for each local fire station. The team name display lamp 205 may be configured to be easily rewritable by using an electronic display board type using a plurality of LEDs. Therefore, by utilizing the fact that the team name display lamp 205 is rewritable, it is conceivable to display other information than the team name on the team name display lamp 205.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2023-85069 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] However, in the conventional disaster prevention vehicle 100 shown in Figure 10, the unit name indicator light 205 was installed on the side of the additional roof section 200b, which has a smaller vertical dimension than the cab body 200a. Therefore, there was a problem in that it was difficult to increase the size of the unit name indicator light 205 to improve visibility or increase the amount of information displayed.

[0007] On the other hand, with the conventional disaster relief vehicle 100, there was a demand to make the vertical dimensions of the rear entry / exit opening 202 and the rear side door 204 as large as possible in order to improve the ease of entry and exit for personnel. However, due to the need to balance with the height of the loading compartment 300, there is a limit to the maximum height dimension of the added roof section 200b and the cab 200 combined. If the vertical dimensions of the rear entry / exit opening 202 and the rear side door 204 in the cab body 200a are to be increased, it is necessary to decrease the vertical dimensions of the added roof section 200b inversely, which presents the problem that the size of the unit name indicator light 205 cannot be increased.

[0008] This invention was made in consideration of the above circumstances, and its purpose is to provide a disaster prevention vehicle that can improve the workability of crew members by increasing the display function and visibility of the unit name indicator light installed on the cab, regardless of the size of the vertical dimensions of the added roof section. [Means for solving the problem]

[0009] To solve the above-mentioned problems, the invention disclosed herein is configured as follows. That is, the present invention relates to a disaster prevention vehicle comprising a cab having a side opening for boarding and alighting and a side door for opening and closing the boarding and alighting opening, a running device, and a work device, wherein the vehicle comprises an information display body attached to the side door and a mounting control device for switching the display content of the information display body, and the information display body has an information display mode for displaying information and a window mode for not displaying information, thereby making it possible to clearly see the outside from the inside of the cab.

[0010] According to the above configuration, the information display unit is attached to the side door of the cab. This allows the vertical dimension of the information display unit to be set regardless of the vertical dimension of the additional roof section, compared to conventional disaster relief vehicles where the information display unit, which serves as a unit name indicator light, was installed on an additional roof section. Furthermore, if the vertical dimension of the side door is increased to improve ease of boarding and alighting for personnel, the vertical dimension of the information display unit can be increased even further. This allows more information to be displayed on the information display unit. In addition, the display function and visibility can be easily increased compared to conventional unit name indicator lights.

[0011] Furthermore, the information display unit of the present invention has an information display mode that displays information and a window mode that does not display information, allowing the outside to be clearly seen from inside the cab. As a result, when it is not necessary to display information on the information display unit, the unit can switch to window mode, allowing the crew to clearly grasp the situation outside the vehicle from inside the cab. In addition, since there is no light emission from the information display in window mode, light from outside the vehicle can be brought directly into the cab. As a result, even if the information display unit is made large, it does not feel oppressive in terms of its size, and the crew's workability can be improved.

[0012] Preferably, the information display mode includes an external display mode for conveying information to a person outside the cab and an internal display mode for conveying information to a person inside the cab.

[0013] According to the above configuration, the information display unit can be used both to convey information to people outside the cab and to convey information to people inside the cab. This allows for a further increase in display capabilities compared to conventional unit name indicator lights.

[0014] Preferably, the internal display mode is configured to display the operating status of the travel equipment and the operating status of the work equipment.

[0015] With the above configuration, team members can obtain information on both the operating status of the mobile equipment and the operating status of the work equipment from the information display. This can further increase the efficiency of the team members' work.

[0016] Preferably, the vehicle mounting control device has a stationary state determination unit that determines the stationary state, and the vehicle mounting control device is configured to switch the display content of the information display unit based on the determination by the stationary state determination unit that the vehicle is stationary.

[0017] According to the above configuration, the information display can automatically show different information depending on whether the vehicle is stationary or in motion. When the disaster relief vehicle is in motion, the information display can show information about the vehicle's driving equipment. When the disaster relief vehicle is stationary, the information display can show information about the vehicle's work equipment. This can further increase the work efficiency of the personnel.

[0018] Preferably, the vehicle mounting control device is configured to switch the display of the information display unit to either the external display mode or the internal display mode based on the determination by the vehicle stopping state determination unit that the vehicle has entered a stopped state, and to switch the display of the information display unit to the other of the external display mode or the internal display mode based on the determination by the vehicle stopping state determination unit that the vehicle has left the stopped state.

[0019] According to the above configuration, depending on the difference between the stopped state and the running state, it is possible to automatically and appropriately switch between the case of transmitting information to people outside the cab by the display of the information display body and the case of transmitting information to people inside the cab. Thereby, the workability of the team members can be further increased.

[0020] Preferably, the information display body has two display areas, a first display area and a second display area, and the first display area is configured to be displayed in an external display mode, and the second display area is configured to be displayed in an internal display mode.

[0021] According to the above configuration, although it is desired to display in both the external display mode and the internal display mode with one information display body, when two types of information cannot be displayed simultaneously on the opposing surfaces of the outside and inside of the cab in the information display body, it is possible to simultaneously transmit information to people outside the cab and information to people inside the cab. Thereby, the workability of the team members can be further increased.

Effect of the Invention

[0022] According to the disaster prevention vehicle according to the present invention, the display function and visibility of the team name display lamp provided in the cab can be increased, and the workability of the team members can be improved.

Brief Description of the Drawings

[0023] [Figure 1] FIG. 1 is a side view of a disaster prevention vehicle according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view of the disaster prevention vehicle according to the present embodiment. [Figure 3] FIG. 3 is a front view of the rear side door of the cab provided with the information display body of the present embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the rear side door of the cab provided with the information display body of the present embodiment, (a) is a cross-sectional view showing the case where one information display body is attached to the rear side door, and (b) is a cross-sectional view showing the case where two information display bodies are stacked and attached to the rear side door. [Figure 5]Figure 5 is a control block diagram of a disaster prevention vehicle according to this embodiment. [Figure 6] Figure 6 is a front view of the information display unit of this embodiment, showing an example of the information display unit being displayed in external display mode so that it can be properly seen from outside the cab. [Figure 7] Figure 7 is a rear view of the information display unit of this embodiment, showing an example of display in internal display mode so that it can be seen correctly from inside the cab, where (a) is a diagram showing an example of display in the first internal display mode, and (b) is a diagram showing an example of display in the second internal display mode. [Figure 8] Figure 8 is a rear view of the information display unit of this embodiment, showing an example of display in internal display mode so that it can be seen correctly from inside the cab, where (a) is a diagram showing an example of display in the third internal display mode, and (b) is a diagram showing an example of display in the fourth internal display mode. [Figure 9] Figure 9 shows an example in which the display area of ​​the information display body of this embodiment is divided into two display areas, a first display area and a second display area, where (a) is a front view of the information display body as seen from outside the cab, and (b) is a rear view of the information display body as seen from inside the cab. [Figure 10] Figure 10 is a side view of a conventional disaster prevention vehicle. [Modes for carrying out the invention]

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0025] Figure 1 is a side view of a disaster prevention vehicle 1 according to one embodiment of the present invention. Figure 2 is a top view of the disaster prevention vehicle 1 according to this embodiment. The disaster prevention vehicle 1 of this embodiment is used, for example, as a rescue vehicle equipped with various equipment and tools necessary for rescue and firefighting activities at fire scenes, accident scenes, etc. As shown in Figures 1 and 2, the disaster prevention vehicle 1 comprises a cab 2 located at the front of the vehicle, a storage compartment 3 for storing materials and equipment located behind the cab 2, a driving device 4, and a work device 5.

[0026] The driving equipment 4 is equipment necessary to drive the disaster prevention vehicle 1 mainly on public roads and is provided by the chassis manufacturer. As shown in Figure 1, the driving equipment 4 includes an engine 41, a transmission 42, a power take-off device 43, etc. The work equipment 5 is equipment used mainly when performing rescue and firefighting activities and is provided by the bodywork manufacturer. The work equipment 5 includes a crane device 51 whose base is located at the rear of the loading compartment 3, a ladder lifting device 5 installed on the upper surface of the ceiling wall of the loading compartment 3, a large lighting device 53 that is vertically extendable and retractable on the ceiling wall of the loading compartment 3, a winch device 52, and a hydraulic pump 58 that supplies hydraulic fluid to the hydraulic actuators of the crane device 51 and the winch device 52.

[0027] Although detailed illustrations are omitted, the winch device 52 stores the front wire end at the lower front end of the cab 2. The winch device 52 also stores the rear movable pulley at the lower rear end of the vehicle. This allows the winch device 52 to be used by pulling out the wire end from the front or the movable pulley from the rear. The hydraulic pump 58 is connected to the power take-off device 43 by a drive shaft. The hydraulic pump 58 is driven by the driving force of the engine 41, which is taken out by the power take-off device 43.

[0028] Cab 2 comprises a double-cab type cab body 2a and an additional roof section 2b attached to the upper end of the cab body 2a. The sides of the cab body 2a are provided with a front access opening 21 and a rear access opening 22. A front side door 23 is attached to the front access opening 21 so as to be able to open and close. A rear side door 24 is attached to the rear access opening 22 so as to be able to open and close. The rear side door 24 is formed to extend above the upper end of the cab body 2a. When the rear side door 24 is closed, the upper end of the rear side door 24 is positioned to fit into a lateral notch 25 provided on the side of the additional roof section 2b. A front seat (not shown) is located inside the cab 2 at a position corresponding to the front access opening 21. A rear seat (not shown) is located inside the cab 2 at a position corresponding to the rear access opening 22.

[0029] A large window section 241 and an information display unit 6 are attached to the rear side door 24. The large window section 241 is made of glass and is rectangular in shape. The large window section 241 is located at the top of the cab body 2a and at the height of the center of the rear side door 24 in the vertical direction. This large window section 241 is an existing window manufactured by the chassis manufacturer. The information display unit 6 is newly installed by the bodywork manufacturer. The information display unit 6 is capable of displaying information to people outside the cab 2 and to people inside the cab 2. The information display unit 6 is located above the large window section 241. The information display unit 6 is formed in a long, narrow rectangular shape with the same width as the large window section 241 but a smaller height. The information display unit 6 is located at the height of the lateral cutout 25 of the additional roof section 2b.

[0030] Multiple warning lights 26, each consisting of a red light, are provided on the upper edge of the extended roof section 2b. A speaker section 27 is also provided on the extended roof section 2b. Multiple work lights 55 are provided on the side of the loading compartment 3.

[0031] Figure 3 is a front view of the rear side door 24 of the cab 2 equipped with the information display unit 6 of this embodiment. Figure 4 is a cross-sectional view of the rear side door 24 of the cab 2 equipped with the information display unit 6, where (a) is a cross-sectional view showing the case where one information display unit 6 is attached to the rear side door, and (b) is a cross-sectional view showing the case where two information display units 6 are attached to the rear side door in stacks. The information display unit 6 shown in Figures 1, 3, and 4 comprises, for example, a plate-shaped main body made of transparent polycarbonate or glass, a transparent plate-shaped substrate, and a light-emitting element consisting of a large number of LEDs. The substrate is attached to one side of the main body. Numerous electrodes made of thin metal wires are arranged on the substrate, and a light-emitting element is attached to each of these electrodes. The numerous light-emitting elements are arranged in a matrix on the substrate. In the information display unit 6, the light-emitting elements themselves are not transparent. However, the main body and substrate of the information display unit 6 are transparent, and the opaque electrodes on the substrate are sufficiently small. As a result, the information display unit 6 ensures transparency from the inside to the outside of the cab 2 and light transmission from the outside to the inside of the cab 2. In other words, the information display unit 6 appears as dots within its transparent body. The personnel inside the cab 2 can see outside the vehicle clearly through the gaps between the multiple light-emitting elements.

[0032] The information display unit 6 has an information display mode M1 (see Figure 3) in which it displays information by emitting light from a light-emitting element, and a window mode M2 ​​(see Figure 1) in which it does not emit light from the light-emitting element (does not display information), making it possible to clearly see the outside from the inside of the cab 2. The information display unit 6 can be provided as follows: one unit on the rear side door 24, as shown in Figure 4(a), or two units on the rear side door 24, as shown in Figure 4(b). The information display unit 6 has an outer cab surface 6a facing the outside of the cab 2 and an inner cab surface 6b facing the inside of the cab 2. When one information display unit 6 displays information in information display mode M1, for example, if human-readable characters are displayed from the outer cab surface 6a as shown in Figure 3, those characters will not be visible from the inner cab surface 6b inside the cab 2 because the light-emitting element will be obscured by opaque electrodes or the like.

[0033] By overlapping two information display units 6, the outer surface 6a of the cab, which is directly visible from the outside of the cab, can be configured with one information display unit 6, and the inner surface 6b of the cab, which is directly visible from the inside of the cab, can be configured with the other information display unit 6. In this case, information that can be read by a person from the outer surface 6a of the cab can be displayed on one information display unit 6, while information that can be read by a person from the inner surface 6b of the cab can be displayed on the other information display unit 6. Thus, using two information display units 6 makes it easier to control the information that is visible from the outer surface 6a of the cab and the information that is visible from the inner surface 6b of the cab.

[0034] When two information display units 6 are placed on top of each other, if information is displayed on the outer surface 6a of the information display unit 6 located outside the cab 2 and on the inner surface 6b of the information display unit 6 located inside the cab 2, it might appear at first glance that the information on the outside and inside of the cab 2 are mixed together. However, this is not actually the case. In this embodiment, the information display unit 6 located outside the cab 2 has a light-emitting element positioned on its outer surface 6a so as to be able to display information. From the inner surface 6b of the information display unit 6, the light-emitting element is hidden by an opaque electrode or the like, so no information is displayed. Similarly, the information display unit 6 located inside the cab 2 has a light-emitting element positioned on its inner surface 6b so as to be able to display information. From the outer surface 6a of the information display unit 6, the light-emitting element is hidden by an opaque electrode or the like, so no information is displayed. As a result, the information on the information display unit 6 located outside the cab 2 and the information on the information display unit 6 located inside the cab 2 do not appear to be mixed together.

[0035] Figure 5 is a control block diagram of the disaster prevention vehicle 1 according to this embodiment. As shown in Figure 5, the disaster prevention vehicle 1 is equipped with a mounting control device 50 for controlling the drive of work equipment 5 and the display of information display 6. Various driving equipment 4 are electrically connected to the mounting control device 50, and signals are transmitted and received between these equipment. Driving equipment 4 connected to the mounting control device 50 include chassis instruments 45, chassis lights 46, on-board cameras 47, vehicle movement display devices 48, parking brake switches 49a, PTO switches 49b, and engine ECUs. Various work equipment 5 are also electrically connected to the mounting control device 50, and signals are transmitted and received between these equipment. The mobile work equipment 5 connected to the mounting control device 50 includes a crane device 51, a winch device 52, a large lighting device 53, a ladder lifting device 54, a work light 55, a warning light 56, a mounting equipment sensor 57, a hydraulic changeover switch 58a, a large lighting activation switch 53a, a work light / warning light switch 55a, a crane operation unit 51a, a winch operation unit 52a, a ladder lifting operation unit 54a, a large lighting lifting operation unit 53b, and a display setting operation unit 59, etc.

[0036] The PTO switch 49b controls the disconnection and connection of the power take-off device 43. When the PTO switch 49b is turned on, the power take-off device 43 takes power from the engine 41 and supplies driving force to the hydraulic pump 58. The hydraulic pump 58 is the hydraulic power source for the crane device 51 and the winch device 52. The hydraulic changeover switch 58a switches the destination of the hydraulic fluid supply from the hydraulic pump 58 to either the crane device 51 or the winch device 52. The large lighting start switch 53a is a switch for starting a generator (not shown) driven by the engine 41 to supply power to the large lighting device 53. The work light / warning light switch 55a is a switch for turning on the warning light 26 and the work light 55.

[0037] The chassis instrument 45 is an instrument for displaying the vehicle's speed, engine speed, fuel level, fuel consumption, battery voltage, etc. The information from the chassis instrument 45 is input to the body control device 50 and used for display on the information display unit 6. The chassis lights 46 are lights used when the vehicle is in motion, and include, for example, turn signals. The operation information of the chassis lights 46 is input to the body control device 50 and used for display on the information display unit 6. The vehicle movement display device 48 is a device that displays the vehicle's current position, traffic restriction information, fire hydrant information, etc., on a map. The vehicle movement display device 48 is located near the front seat of the cab 2. The information from this vehicle movement display device 48 is input to the body control device 50 and used for display on the information display unit 6.

[0038] The mounting equipment sensor 57 is a sensor that detects the current state of the work equipment 5. The mounting equipment sensor 57 can detect whether the door of the loading compartment 3 is open or not. The mounting equipment sensor 57 can also detect whether the large lighting device 53 is raised or not. The mounting equipment sensor 57 can also detect whether the boom and outriggers of the crane device 51 are retracted or not. The mounting equipment sensor 57 can also detect whether the front and rear wire ends of the winch device 52 are retracted or not. The information from the mounting equipment sensor 57 is input to the mounting control device 50 and used for display on the information display unit 6.

[0039] The on-board cameras 47 are multiple cameras installed at various locations on the disaster prevention vehicle 1. The on-board cameras 47 are installed to understand the surrounding conditions while the vehicle is in motion or during rescue and firefighting operations. For example, one of the on-board cameras 47 used during rescue and firefighting operations may be installed on the large lighting device 53. The information from the on-board cameras 47 is input to the mounting control device 50 and used for display on the information display unit 6.

[0040] The display setting operation unit 50f is provided for setting the display content of the information display unit 6 to any desired content. For example, the display setting operation unit 50f allows the user to select from several pre-created display content patterns according to the situation during vehicle operation and during rescue and firefighting activities.

[0041] The vehicle mounting control device 50 includes a stationary state determination unit 50a, an operational state determination unit 50b, a hydraulic switching determination unit 50c, a display change unit 50d, and an engine speed setting unit 50e. The stationary state determination unit 50a determines whether the disaster prevention vehicle 1 is stationary based on an input signal from the parking brake switch 49a. The operational state determination unit 50b determines the retracted state of the boom and outriggers of the crane device 51, the retracted state of the wire tip of the winch device 52, etc., based on an input signal from the vehicle mounting equipment sensor 57.

[0042] Furthermore, the hydraulic switching determination unit 50c determines, based on the input signal from the hydraulic switching switch 58a, whether the hydraulic fluid from the hydraulic pump 58 is supplied to the crane device 51 or the winch device 52. Also, the display change unit 50d sends the set display content information to the information display unit 6 based on the input signal from the display setting operation unit 50f. In addition, the engine speed setting unit 50e outputs a control signal for the rotation speed of the engine 41 to the engine ECU 44 in order to change the rotation speed of the hydraulic pump 58 according to the operating status of the crane device 51 or the winch device 52.

[0043] Figure 6 is a front view of the information display unit 6 in this embodiment, showing an example of display in external display mode M11 so that it can be seen correctly from outside the cab 2. Figure 7 is a rear view of the information display unit 6, showing an example of display in internal display mode M12 so that it can be seen correctly from inside the cab 2, where (a) shows an example of display in first internal display mode M121 and (b) shows an example of display in second internal display mode M122. Figure 8 is a rear view of the information display unit 6, showing an example of display in internal display mode M12 so that it can be seen correctly from inside the cab 2, where (a) shows an example of display in third internal display mode M123 and (b) shows an example of display in fourth internal display mode M124.

[0044] In the information display unit 6 of this embodiment, the information display mode M1 has an external display mode M11 for transmitting information to a person outside the cab 2 and an internal display mode M12 for transmitting information to a person inside the cab 2. The external display mode M11 displays information on the information display unit 6 that can be read by a person from the outside surface 6a of the cab. In this embodiment, there are two types of external display modes M11: a first external display mode M111 that displays the affiliated unit P1 as shown in Figure 3, and a second external display mode M112 that displays the activity status P2 as shown in Figure 6. For example, the first external display mode M111 is displayed while the vehicle is in motion. When the vehicle stops at a site and rescue / firefighting activities begin, the external display mode M11 is switched to the second external display mode M112. The mounting control device 50 switches the display content of the information display unit 6 from the first external display mode M111 to the second external display mode M112 based on the determination by the stopping state determination unit 50a that the vehicle has stopped. At that time, the display change unit 50d of the mounting control device 50 controls the display content of the information display unit 6 to switch.

[0045] The activity status indicator P2 shown in Figure 6 uses the text "Rescue operation in progress" as an example, but it can be changed to various other content. The content should be designed to easily convey the current activity status to those around. Furthermore, the activity status indicator P2 is not limited to fixed text. For example, the activity status indicator P2 could be text that flows in a circular motion in the front-to-back direction of the vehicle.

[0046] Next, the internal display mode M12 of this embodiment is a mode for the crew member seated in the rear seat to view the inner cab side 6b of the information display unit 6. The inner cab side 6b of the information display unit 6 is in a position that is close to the crew member seated in the rear seat and is very easy to see. In this embodiment, as shown in Figures 7 and 8, there are a total of four internal display modes M12: the first internal display mode M121, the second internal display mode M122, the third internal display mode M123, and the fourth internal display mode M124. Of these, the first internal display mode M121 and the second internal display mode M122 are modes that display the operating status of the driving equipment 4. The third internal display mode M123 and the fourth internal display mode M124 are modes that display the operating status of the work equipment 5. In this embodiment, a total of four internal display modes M12 are set, but this may be increased to five or more.

[0047] In the example shown in Figure 7(a), the first internal display mode M121 displays images from multiple in-vehicle cameras 47. Specifically, it displays images from the in-vehicle camera 47 that shows the front view P3, the in-vehicle camera 47 that shows the rear view P4, the in-vehicle camera 47 that shows the right view P5, and the in-vehicle camera 47 that shows the left view P6.

[0048] In the example shown in Figure 7(b), the second internal display mode M122 displays information from the chassis instruments 45, the chassis lighting devices 46, and the vehicle movement display device 48. Specifically, it displays a right turn indicator P7, a left turn indicator P8, a clock display P9, a vehicle speed display P10, an engine speed display P11, and a map display P12 from the vehicle movement display device 48.

[0049] In the example shown in Figure 8(a), the third internal display mode M123 displays information such as the illumination of work lights 55 and warning lights 56. Specifically, it displays interior light indicators P13, door open indicators P14, multiple types of work lights P15, multiple types of warning lights P16, large light indicators P17, and tower rising indicators P18. These displays convey changes in status through changes in color.

[0050] In the example shown in Figure 8(b), the fourth internal display mode M124 displays the operating status of the crane device 51 and the winch device 52. Specifically, for the crane device 51, the crane selection indicator P19, boom status indicator P21, and outrigger status indicator P22 are displayed. The crane selection indicator P19 lights up when the crane device 51 is selected by the hydraulic changeover switch 58a. The boom status indicator P21 and outrigger status indicator P22 indicate whether the boom and outriggers are retracted or not, respectively. For the winch device 52, the winch selection indicator P20, front status indicator P23, and rear status indicator P24 are displayed. The winch selection indicator P20 lights up when the winch selection indicator P20 is selected by the hydraulic changeover switch 58a. The front status indicator P23 indicates whether the front wire tip of the winch device 52 is retracted or not. The rear status indicator P24 indicates whether the rear movable pulley of the winch device 52 is retracted or not.

[0051] Furthermore, the fourth internal display mode M124 displays the battery voltage P25 and the engine speed P11 as displays common to both the crane device 51 and the winch device 52. The engine speed P11 is one piece of information from the chassis instrument 45. However, this information is necessary for monitoring the operating status of the crane device 51 and the winch device 52, since the hydraulic pump 58 is powered by the engine 41.

[0052] The vehicle control device 50 is configured to switch the display content of the internal display mode M12 of the information display unit 6 based on the determination by the stationary state determination unit 50a that the vehicle has entered a stationary state. Specifically, when the vehicle is in motion, the internal display mode M12 is selected to be either the first internal display mode M121 or the second internal display mode M122. On the other hand, when the vehicle enters a stationary state, the internal display mode M12 is automatically switched to either the third internal display mode M123 or the fourth internal display mode M124.

[0053] In the configuration described above, during driving, the information display unit 6 displays in the first external display mode M111 and either the first internal display mode M121 or the second internal display mode M122. Furthermore, during stationary rescue and firefighting operations, the information display unit 6 displays in the second external display mode M112 and either the third internal display mode M123 or the fourth internal display mode M124. For example, when using two information display units 6 as shown in Figure 4(b), the information display unit 6 located outside the cab 2 displays in external display mode M11 (first external display mode M111, second external display mode M112). The information display unit 6 located inside the cab 2 displays in internal display mode M12 (first internal display mode M121, second internal display mode M122, third internal display mode M123, fourth internal display mode M124). Furthermore, if display in external display mode M11 or internal display mode M12 is not required, the two information display units 6 can be set to window mode M2.

[0054] How the information is displayed on the information display unit 6 can be arbitrarily set using the display setting operation unit 50f. Therefore, it is not always necessary to display both the external display mode M11 and the internal display mode M12 simultaneously. For example, the mounting control device 50 switches the display on the information display unit 6 to either the external display mode M11 or the internal display mode M12 based on the determination by the stationary state determination unit 50a that the vehicle has entered a stationary state. Alternatively, the display on the information display unit 6 can be switched to the other of the external display mode M11 or the internal display mode M12 based on the determination by the stationary state determination unit 50a that the vehicle has left a stationary state. This configuration is also possible.

[0055] Figure 9 shows an example in which the display area of ​​the information display unit 6 of this embodiment is divided into two display areas, a first display area A and a second display area B. (a) is a front view of the information display unit 6 as seen from outside the cab 2, and (b) is a rear view of the information display unit 6 as seen from inside the cab 2. When information is displayed on the entire surface of a single information display unit 6, if the light-emitting element is positioned so that the information can be displayed from outside the cab 2, the information cannot be displayed from inside the cab 2 because the light-emitting element is hidden by opaque electrodes, etc. However, even with a single information display unit 6, if it is divided into two display areas, a first display area A and a second display area B, as shown in Figure 9, it is possible to display both the external display mode M11 and the internal display mode M12 simultaneously on a single information display unit 6 without any problems with visibility. For example, the first display area A is displayed in external display mode M11 so that it can be read correctly by a person from outside the cab 2. In other words, the first display area A is configured so that the light-emitting element is positioned to emit light towards the outside of the cab 2. The second display area B is displayed in internal display mode M12 so that it is legible to a person from inside the cab 2. In other words, the light-emitting element in the second display area B is positioned so that it emits light towards the inside of the cab 2. This configuration is also acceptable.

[0056] As described above, the disaster prevention vehicle 1 according to this embodiment comprises a cab 2 having side entry / exit openings 21, 22 and side doors 23, 24 for opening and closing the entry / exit openings 21, 22, a driving device 4, and a work device 5. The disaster prevention vehicle 1 also comprises an information display unit 6 attached to the rear side door 24 and a mounting control device 50 for switching the display content of the information display unit 6. The information display unit 6 has an information display mode M1 for displaying information and a window mode M2 ​​for not displaying information, which makes it possible to clearly see the outside from inside the cab 2.

[0057] With the above configuration, compared to the conventional disaster prevention vehicle 100 in which the unit name indicator light 205 was installed on the additional roof section 200b, the vertical dimension of the information display unit 6 can be set regardless of the vertical dimension of the additional roof section 2b. Furthermore, if the vertical dimension of the rear side door 24 is increased to improve ease of boarding and alighting for personnel, the vertical dimension of the information display unit 6 can be increased even further. This allows more information to be displayed on the information display unit 6. And, compared to the conventional unit name indicator light 205, the display function and visibility can be easily increased.

[0058] Furthermore, in the above embodiment, the information display unit 6 has an information display mode M1 that displays information and a window mode M2 ​​that does not display information, allowing the outside to be clearly seen from inside the cab 2. As a result, when it is not necessary to display information on the information display unit 6, the unit can switch to window mode M2, allowing the crew to clearly grasp the situation outside the vehicle from inside the cab 2. In addition, since there is no illumination of the information display in window mode M2, light from outside the vehicle can be directly taken into the cab 2. As a result, even if the information display unit 6 is made large, its size does not cause a feeling of oppression, and the workability of the crew can be improved.

[0059] Furthermore, in the above embodiment, the information display mode M1 includes an external display mode M11 for transmitting information to a person outside the cab 2 and an internal display mode M12 for transmitting information to a person inside the cab 2.

[0060] With the above configuration, the information display unit 6 can be used both to transmit information to people outside the cab 2 and to transmit information to people inside the cab 2. This allows for a further increase in display capabilities compared to the conventional unit name indicator light 205.

[0061] Furthermore, in the above embodiment, the internal display mode M12 is configured to display the operating status of the travel equipment 4 and the operating status of the work equipment 5.

[0062] With the above configuration, the crew members can obtain information on both the operating status of the mobile equipment 4 and the operating status of the work equipment 5 from the information display unit 6. This further increases the crew members' work efficiency.

[0063] Furthermore, in the above embodiment, the vehicle mounting control device 50 has a stationary state determination unit 50a that determines the stationary state. The vehicle mounting control device 50 is configured to switch the display content of the information display unit 6 based on the determination by the stationary state determination unit 50a that the vehicle is stationary.

[0064] With the above configuration, the information display unit 6 can automatically display different information depending on whether the vehicle is stationary or in motion. When the disaster relief vehicle 1 is in motion, the information display unit 6 can display information about the driving equipment 4. When the disaster relief vehicle 1 is stationary, the information display unit 6 can display information about the work equipment 5. This further enhances the work efficiency of the personnel.

[0065] Furthermore, in the above embodiment, the mounting control device 50 switches the display of the information display unit 6 to either external display mode M11 or internal display mode M12 based on the determination by the stopping state determination unit 50a that the vehicle has entered a stopped state, and switches the display of the information display unit 6 to the other of external display mode M11 or internal display mode M12 based on the determination by the stopping state determination unit 50a that the vehicle has left the stopped state.

[0066] According to the above configuration, the information display unit 6 can be automatically and appropriately switched between conveying information to a person outside the cab 2 and conveying information to a person inside the cab 2, depending on whether the vehicle is stationary or in motion. This further increases the work efficiency of the crew members.

[0067] Furthermore, in the above embodiment, the information display unit 6 has two display areas: a first display area A and a second display area B. The first display area A is configured to be displayed in external display mode M11, and the second display area B is configured to be displayed in internal display mode M12.

[0068] According to the above configuration, the goal is to display information in both external display mode M11 and internal display mode M12 using a single information display unit 6. However, if it is not possible to simultaneously display two types of information on the opposing surfaces of the information display unit 6 on the outside and inside of the cab 2, it is possible to simultaneously transmit information to a person outside the cab 2 and to a person inside the cab 2. This further increases the work efficiency of the crew members.

[0069] The embodiments disclosed herein are illustrative in all respects and are not intended to be restrictive. The technical scope of the present invention is not construed solely by the embodiments described above, but is defined by the claims. Furthermore, the technical scope of the present invention includes all modifications within the meaning and scope of equivalence to the claims.

[0070] For example, in the above embodiment, the disaster prevention vehicle 1 was equipped with a crane device 51. The present invention is not limited to this, and can also be applied to disaster prevention vehicles without a crane device, or to disaster prevention vehicles equipped with a water pump. Furthermore, in the above embodiment, the winch device 52 of the disaster prevention vehicle 1 was configured to be usable by pulling out the wire tip from the front side or the movable pulley from the rear side. The present invention is not limited to this, and can also be applied to disaster prevention vehicles in which the movable pulley cannot be pulled out from the rear side.

[0071] Furthermore, in the above embodiment, the information display mode M1 of the information display unit 6 had an external display mode M11 for transmitting information to a person outside the cab 2 and an internal display mode M12 for transmitting information to a person inside the cab 2. The present invention is not limited to this, and the information display mode may be configured to enable only one of the external display mode or the internal display mode. [Explanation of Symbols]

[0072] 1. Disaster prevention vehicle 2 Cab 4. Running equipment 5 Work equipment 6 Information display 21 Front entry / exit opening 22 Rear entrance / exit opening 23 Front side door 24 Rear side door 50 Mounting control device 50a Stopped state determination unit M1 Information Display Mode M2 Window Mode M11 External Display Mode M12 Internal Display Mode A 1st display area B Second display area

Claims

1. In a disaster prevention vehicle equipped with a cab having a side opening for boarding and a side door for opening and closing the boarding and alighting opening, a running machine, and a work machine, The system comprises an information display unit attached to the side door, and a mounting control device that switches the display content of the information display unit. The information display unit has an information display mode for displaying information and a window mode for not displaying information, which allows for clear visibility from the inside to the outside of the cab. A disaster prevention vehicle characterized by the following features.

2. The information display mode includes an external display mode for transmitting information to a person outside the cab and an internal display mode for transmitting information to a person inside the cab. The disaster prevention vehicle according to claim 1, characterized in that it is a disaster prevention vehicle.

3. The internal display mode is configured to display the operating status of the travel equipment and the operating status of the work equipment. The disaster prevention vehicle according to feature 2.

4. The aforementioned mounting control device has a stationary state determination unit that determines the stationary state, The vehicle mounting control device is configured to switch the display content of the information display unit based on the determination by the vehicle stopping state determination unit that the vehicle has entered a stopped state. A disaster prevention vehicle according to claim 2 or 3, characterized by the features described above.

5. The vehicle mounting control device is configured to switch the display of the information display unit to either the external display mode or the internal display mode based on the determination by the vehicle stopping state determination unit that the vehicle has entered a stopped state, and to switch the display of the information display unit to either the external display mode or the internal display mode based on the determination by the vehicle stopping state determination unit that the vehicle has left the stopped state. The disaster prevention vehicle according to feature 4.

6. The information display unit has two display areas, a first display area and a second display area, and is configured to display in an external display mode in the first display area and in an internal display mode in the second display area. A disaster prevention vehicle according to claim 2 or 3, characterized by the features described herein.

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