Notification device

Abstract

To provide a notification device capable of easily changing a liquid level at which a notification is made.SOLUTION: A notification device 20 includes: a cylindrical body 21 having a non-conductive part 21a being cylindrical and removably connected to a first cylindrical part 13 to communicate with the first cylindrical part 13 and removably connected to the second cylindrical part 15 to communicate with the second cylindrical part 15, and a plurality of open holes penetrating the non-conductive part 21a, each to open at an inner face and an outer face of the non-conductive part 21a; a plurality of conductive parts 22 each arranged at each the plurality of open holes; a notification part 23 configured to perform a notification; and an actuation part 24 electrically connected to two conductive parts 22 from among the plurality of conductive parts 22 and the notification part 23, apply a voltage between the two conductive part 22, and actuate the notification part 23 to perform a notification, when a current flows between the two conductive parts 22 via a fluid 30 flowing from a tank 11 via a first tubular part 12 into the non-conductive part 21a.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a notification device.

Background Art

[0002] For example, Patent Document 1 discloses a liquid level gauge capable of detecting an upper liquid level and a lower liquid level of the liquid level in a liquid tank, and a notification circuit that activates a limit notification unit when the liquid level reaches a height equal to or higher than the upper liquid level or a height equal to or lower than the lower liquid level.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] However, in the liquid level notification device of Patent Document 1, it is difficult to change the liquid level at which notification is made.

[0005] Therefore, an object of the present invention is to provide a notification device capable of easily changing the liquid level at which notification is made.

Means for Solving the Problems

[0006] (1) The notification device of the present invention is a notification device attached to a vehicle. The vehicle includes a tank for storing a liquid, a first tubular portion that is tubular and has one end connected to the tank so as to communicate with the tank and the other end opening upward, a first cylindrical portion that is cylindrical and detachably connected to the first tubular portion so as to communicate with the first tubular portion and has flexibility, a second tubular portion that is tubular and has one end connected to the tank above the first tubular portion so as to communicate with the tank and the other end opening downward above the other end of the first tubular portion, and a second cylindrical portion that is cylindrical and detachably connected to the second tubular portion so as to communicate with the second tubular portion and has flexibility. The notification device includes a non-conductive portion that is cylindrical and detachably connected to the first cylindrical portion so as to communicate with the first cylindrical portion and detachably connected to the second cylindrical portion so as to communicate with the second cylindrical portion, and a cylindrical body having a plurality of through-holes penetrating the non-conductive portion so as to open on the inner surface and the outer surface of the non-conductive portion, a plurality of conductive portions respectively disposed in any of the plurality of through-holes, a notification portion for performing notification, an operation portion electrically connected to two of the plurality of conductive portions and the notification portion, applying a voltage between the two conductive portions, and operating the notification portion to perform the notification when a current flows between the two conductive portions through the liquid flowing into the non-conductive portion from the tank through the first tubular portion.

[0007] (2) In the notification device of (1) above, it is preferable that the cylindrical body is connected to the first cylindrical portion and the second cylindrical portion at a height position adapted to the required time from when the notification is performed until an operator stops the liquid supply to the tank.

[0008] (3) In the notification device of (2) above, the plurality of conductive parts have three or more conductive parts arranged at intervals in the axial direction of the non-conductive part, and in the non-conductive part, for each position corresponding to the height position of each of the conductive parts, the time from when the notification is made until the liquid level of the liquid stored in the tank reaches a predetermined liquid level is preferably displayed.

[0009] (4) In the notification device of (1) to (3) above, it is preferable that the notification unit performs wireless communication with a wireless communication terminal and performs the notification using the wireless communication terminal.

Effect of the Invention

[0010] According to the present invention, it becomes possible to provide a notification device capable of easily changing the liquid level at which the notification is made.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0012] <First Embodiment> Hereinafter, the notification device 20 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

[0013] As shown in FIG. 1, the notification device 20 is attached to the vehicle 10. The vehicle 10 includes a tank 11, a first tubular portion 12, a first cylindrical portion 13, a second tubular portion 14, and a second cylindrical portion 15. In the present embodiment, the vehicle 10 is a watering vehicle that can store the liquid 30 (see FIG. 3) in the tank 11 and spray the liquid 30 stored in the tank 11. However, as long as it has a tank similar to the tank 11, it may be a vehicle other than a watering vehicle.

[0014] The tank 11 stores the liquid 30. In the present embodiment, the liquid 30 is water.

[0015] The first tubular portion 12 is tubular. In the present embodiment, the first tubular portion 12 is circular tubular. One end portion of the first tubular portion 12 is connected to the tank 11 so as to communicate with the tank 11. One end portion of the first tubular portion 12 is connected to the lower portion of the tank 11. The other end portion of the first tubular portion 12 is open upward.

[0016] The first cylindrical portion 13 is cylindrical. In the present embodiment, the first cylindrical portion 13 is cylindrical. The first cylindrical portion 13 is formed of, for example, a flexible material and has flexibility. The first cylindrical portion 13 is detachably connected to the first tubular portion 12 so as to communicate with the first tubular portion 12. In the present embodiment, with the other end portion of the first tubular portion 12 inserted inward from the lower end portion of the first cylindrical portion 13, the first cylindrical portion 13 and the first tubular portion 12 are tightened with a hose band, whereby the first cylindrical portion 13 is detachably connected to the first tubular portion 12. By loosening the hose band, the first cylindrical portion 13 can be removed from the first tubular portion 12.

[0017] The second tubular portion 14 is tubular. In the present embodiment, the second tubular portion 14 is circular tubular. One end portion of the second tubular portion 14 is connected to the tank 11 above the first tubular portion 12 so as to communicate with the tank 11. One end portion of the second tubular portion 14 is connected to the upper portion of the tank 11. The other end portion of the second tubular portion 14 opens downward above the other end portion of the first tubular portion 12.

[0018] The second cylindrical portion 15 is cylindrical. In the present embodiment, the second cylindrical portion 15 is circular cylindrical. The second cylindrical portion 15 is formed of, for example, a flexible material and has flexibility. The second cylindrical portion 15 is detachably connected to the second tubular portion 14 so as to communicate with the second tubular portion 14. In the present embodiment, with the other end portion of the second tubular portion 14 inserted inside the second cylindrical portion 15, the second cylindrical portion 15 and the second tubular portion 14 are tightened with a hose band, whereby the second cylindrical portion 15 is detachably connected to the second tubular portion 14. By loosening the hose band, the second cylindrical portion 15 can be removed from the second tubular portion 14.

[0019] The notification device 20 includes a cylindrical body 21, a plurality of conductive portions 22, a notification portion 23, and an operating portion 24.

[0020] As shown in FIGS. 2 and 3, the cylindrical body 21 has a non-conductive portion 21a and a plurality of through holes (a plurality of first holes 21b and a plurality of second holes 21c). Further, the cylindrical body 21 is connected to the first cylindrical portion 13 and the second cylindrical portion 15 at a height position corresponding to the required time (grace period) from when the notification by the notification portion is performed until the operator stops the liquid supply to the tank 11.

[0021] The non-conductive part 21a is cylindrical. In the present embodiment, the non-conductive part 21a is cylindrical. The non-conductive part 21a is formed of a non-conductive material. The non-conductive part 21a is detachably connected to the first cylindrical part 13 so as to communicate with the first cylindrical part 13. In the present embodiment, with the lower end part of the non-conductive part 21a inserted inward from the upper end part of the first cylindrical part 13 into the first cylindrical part 13, the non-conductive part 21a is detachably connected to the first cylindrical part 13 by tightening the first cylindrical part 13 and the non-conductive part 21a with a hose band. By loosening the hose band, the non-conductive part 21a can be removed from the first cylindrical part 13. Further, the non-conductive part 21a is detachably connected to the second cylindrical part 15 so as to communicate with the second cylindrical part 15. In the present embodiment, with the upper end part of the non-conductive part 21a inserted inward from the lower end part of the second cylindrical part 15 into the second cylindrical part 15, the non-conductive part 21a is detachably connected to the second cylindrical part 15 by tightening the second cylindrical part 15 and the non-conductive part 21a with a hose band. By loosening the hose band, the non-conductive part 21a can be removed from the second cylindrical part 15.

[0022] Each of the plurality of through holes penetrates the non-conductive part 21a so as to open on the inner surface and the outer surface of the non-conductive part 21a. In the present embodiment, the plurality of through holes includes a plurality of first holes 21b and a plurality of second holes 21c. That is, each of the plurality of first holes 21b and each of the plurality of second holes 21c penetrate the non-conductive part 21a so as to open on the inner surface and the outer surface of the non-conductive part 21a.

[0023] The plurality of first holes 21b are arranged at intervals in the axial direction of the non-conductive part 21a (see arrow A in FIGS. 2 and 3). Each of the plurality of first holes 21b penetrates the non-conductive part 21a in a direction orthogonal to the axial direction of the non-conductive part 21a (see arrow B in FIGS. 2 and 3). In the present embodiment, the plurality of first holes 21b are two first holes 21b.

[0024] The plurality of second holes 21c are arranged at intervals in the axial direction of the non-conductive portion 21a. Each of the plurality of second holes 21c penetrates the non-conductive portion 21a in the orthogonal direction and faces each of the plurality of first holes 21b in the orthogonal direction. In the present embodiment, the plurality of second holes 21c are two second holes 21c.

[0025] Each of the plurality of conductive portions 22 is arranged in any one of the plurality of through holes and is exposed on the inner side and the outer side of the non-conductive portion 21a. In the present embodiment, the plurality of conductive portions 22 are two conductive portions 22. Each of the plurality of conductive portions 22 is arranged in the first hole 21b and the second hole 21c, protrudes inward from the inner surface of the non-conductive portion 21a, and protrudes outward from the outer surface of the non-conductive portion 21a. The plurality of conductive portions 22 are arranged side by side in the axial direction. Each of the plurality of conductive portions 22 has a metal bolt 22a and a metal nut 22b.

[0026] The bolt 22a is inserted into the first hole 21b and the second hole 21c from the side of the first hole 21b and is arranged in the first hole 21b and the second hole 21c. The nut 22b is screwed onto the portion of the bolt 22a that protrudes outward from the second hole 21c. By tightening the bolt 22a and the nut 22b, the bolt 22a and the nut 22b are fixed to the non-conductive portion 21a. If there is a gap between the non-conductive portion 21a and the conductive portion 22, a sealing material or the like may be provided to fill the gap in order to make it difficult for the liquid 30 that has flowed into the inner side of the non-conductive portion 21a to leak from the gap.

[0027] As shown in FIG. 1, the notification unit 23 performs notification. In the present embodiment, the notification unit 23 is a lamp and performs notification by lighting up.

[0028] The actuating part 24 is electrically connected to two of the plurality of conductive parts 22 and the notification part 23. When the actuating part 24 applies a voltage between the two conductive parts 22 and a current flows between the two conductive parts 22 through the liquid 30 that has flowed into the non-conductive part 21a from the tank 11 via the first tubular part 12, it actuates the notification part 23 to give a notification. As shown in FIG. 4, the actuating part 24 has two terminals 24a, two electric wires 24b, a switch 24c, a power source 24d, a relay 24e, a power source 24f, two electric wires 24g, and a box 24h.

[0029] Each of the two terminals 24a is connected to each of the two conductive parts 22. As shown in FIGS. 2 and 3, in this embodiment, the terminal 24a is a terminal having an annular part, and is fixed to the conductive part 22 by tightening a nut 24i with a bolt 22a inserted inside the annular part.

[0030] Each of the two electric wires 24b is electrically connected to each of the two terminals 24a. In this embodiment, the electric wire 24b is formed by covering a conductive core wire with an insulator, and is electrically connected to the terminal 24a by connecting the tip of the core wire to the terminal 24a.

[0031] As shown in FIG. 4, the switch 24c, the power source 24d, and the relay 24e are electrically connected to each other, and are electrically connected to one of the two conductive parts 22 via one of the two electric wires 24b and to the other of the two conductive parts 22 via the other of the two electric wires 24b.

[0032] The relay 24e and the power source 24f are electrically connected to each other and are electrically connected to the notification part 23 via the two electric wires 24g.

[0033] The switch 24c, the power source 24d, the relay 24e, and the power source 24f are arranged in the box 24h.

[0034] When two terminals 24a are connected to two conductive parts 22 and the switch 24c is turned on, if the two conductive parts 22 come into contact with the liquid 30, a current flows between the two conductive parts 22 through the liquid 30, and a current flows through the relay 24e. As a result, the power from the power source 24f is supplied to the notification unit 23, and the notification unit 23 operates to perform notification. Here, as a modified example, the batteries mounted on the vehicle 10 may be used as the power sources 24d and 24f.

[0035] Next, the flow of storing the liquid in the tank 11 will be described.

[0036] For example, when spraying the liquid 30 at a construction site or the like using the vehicle 10, the liquid 30 is caused to flow into the tank 11 at a predetermined water supply location within the construction site or the like and stored in the tank 11. An operator such as the driver of the vehicle 10 has to wait at a predetermined waiting location (e.g., a simple office or a shed) away from the water supply location until the liquid 30 is stored up to a predetermined liquid level in the tank 11 according to regulations (e.g., anti-hazard regulations) at the construction site or the like. When the notification by the notification unit 23 is made, the operator etc. starts to move from the waiting location towards the water supply location, but in most cases, running is prohibited according to regulations (e.g., anti-hazard regulations) at the construction site or the like. Therefore, it is necessary to ensure the required time (lead time) until the stop of the liquid supply including the moving time of the operator etc. from the predetermined waiting location to the water supply location. That is, since the notification device 20 can notify the operator etc. by the notification unit 23 in anticipation of this required time (lead time), when the operator etc. who has departed from the predetermined waiting location arrives at the water supply location, the liquid 30 is stored up to a predetermined liquid level in the tank 11, and the liquid 30 can be easily stored up to the predetermined liquid level in the tank 11 without overflowing from the tank 11. Note that since the distance from the waiting location to the water supply location varies for each construction site, the time taken to move from the waiting location to the water supply location is different. By changing the length of the first cylindrical portion and the length of the second cylindrical portion and changing the height position of the cylindrical body 21 according to the construction site, the time from when the notification is made until the liquid 30 is stored up to a predetermined liquid level in the tank 11 can be changed. Therefore, without changing the vehicle 10 itself, by only changing the first cylindrical portion and the second cylindrical portion, in more construction sites, the liquid 30 can be easily stored up to a predetermined liquid level in the tank 11 without overflowing from the tank 11.

[0037] As described above, the notification device 20 in the embodiment of the present invention is a notification device attached to the vehicle 10. The vehicle 10 includes a tank 11 that stores a liquid, a first tubular portion 12 that is tubular and has one end connected to the tank 11 so as to communicate with the tank 11 and the other end opening upward, a first cylindrical portion 13 that is cylindrical and detachably connected to the first tubular portion 12 so as to communicate with the first tubular portion 12 and has flexibility, a second tubular portion 14 that is tubular and has one end connected to the tank 11 above the first tubular portion 12 so as to communicate with the tank 11 and the other end opening downward above the other end of the first tubular portion 12, and a second cylindrical portion 15 that is cylindrical and detachably connected to the second tubular portion 14 so as to communicate with the second tubular portion 14 and has flexibility. The notification device 20 includes a non-conductive portion 21a that is cylindrical and detachably connected to the first cylindrical portion 13 so as to communicate with the first cylindrical portion 13 and detachably connected to the second cylindrical portion 15 so as to communicate with the second cylindrical portion 15, a cylindrical body 21 having a plurality of through holes (a plurality of first holes 21b and a plurality of second holes 21c) penetrating the non-conductive portion 21a so as to open on the inner surface and the outer surface of the non-conductive portion 21a respectively, a plurality of conductive portions 22 each disposed in any of the plurality of through holes, a notification portion 23 that performs notification, and an operating portion 24 that is electrically connected to two of the plurality of conductive portions 22 and the notification portion 23, applies a voltage between the two conductive portions 22, and activates the notification portion 23 to perform notification when a current flows between the two conductive portions 22 through the liquid 30 that has flowed into the non-conductive portion 21a from the tank 11 via the first tubular portion 12.

[0038] According to this, the first cylindrical portion 13 is detachable, the second cylindrical portion 15 is detachable, and the non-conductive portion 21a is detachable. Therefore, the first cylindrical portion 13 can be easily changed to a first cylindrical portion of a different length, and the second cylindrical portion 15 can be easily changed to a second cylindrical portion of a different length. As a result, the position of the non-conductive portion 21a can be easily changed, so that the liquid level at which notification is performed can be easily changed.

[0039] Also, in the notification device 20 according to the embodiment of the present invention, the plurality of through holes include a plurality of first holes 21b arranged at intervals in the axial direction of the non-conductive portion 21a, and a plurality of second holes 21c each facing one of the plurality of first holes 21b. Each of the plurality of conductive portions 22 has a metal bolt 22a inserted from the first hole 21b side into the first hole 21b and the second hole 21c, and a metal nut 22b screwed onto a portion of the bolt 22a protruding from the second hole 21c.

[0040] According to this, the conductive portion 22 can be easily attached to the cylindrical body 21.

[0041] <Second Embodiment> Hereinafter, the notification device 120 according to the second embodiment of the present invention will be described with reference to FIG. 5. In this embodiment, components having the same two-digit numbers as those in the first embodiment are the same, and thus the description may be omitted. Also, regarding parts not particularly described, since they are the same as those in the first embodiment, the description may be omitted.

[0042] The notification device 120 mainly differs from the notification device 20 in that it includes a cylindrical body 121 different from the cylindrical body 21 and three or more (16 in this embodiment) conductive portions 122.

[0043] The cylindrical body 121 has a non-conductive portion 121a longer than the non-conductive portion 21a, three or more (16 in this embodiment) first holes (see the first hole 21b in FIG. 3), and three or more (16 in this embodiment) second holes (see the second hole 21c in FIG. 3).

[0044] For each position corresponding to the height position of each of the plurality of conductive parts 122 in the non-conductive part 121a (in this embodiment, for example, at a position adjacent to each of the plurality of conductive parts 122), the time from when notification is made until the liquid level of the liquid stored in the tank 111 reaches a predetermined liquid level is displayed as a scale or the like. In this embodiment, for example, the time displayed at the position of the upper conductive part 122 among the two conductive parts 122 to which the terminals 124a and 124b are connected is defined as "the time from when notification is made until the liquid level of the liquid stored in the tank 111 reaches a predetermined liquid level". In FIG. 5, only the time for the uppermost conductive part 122 is illustrated, but the same time (for example, 10 seconds, 20 seconds, 30 seconds, etc.) is also displayed for the other conductive parts 122. For example, when two terminals 124a are connected to a conductive part 122 with 10 seconds displayed adjacent thereto and a conductive part 122 one position below the said conductive part 122, the liquid level of the liquid stored in the tank 111 reaches a predetermined liquid level 10 seconds after notification is made. For example, the time related to each conductive part 122 is measured in advance and displayed as a scale or the like, such as being printed on the non-conductive part 121a. Since the internal cross-sectional shape of the tank 111 may be substantially circular or substantially elliptical, etc., the change in the liquid level is slower near the central part of the tank 111 than near the lower end part and the upper end part of the tank 111. Therefore, even if the intervals at which the plurality of conductive parts 122 are arranged are equal, the intervals of the time displayed as a scale or the like may not be equal (for example, 10 seconds, 25 seconds, 60 seconds, etc.).

[0045] As described above, in the notification device 120 according to the embodiment of the present invention, the plurality of first holes are three or more first holes, the plurality of second holes are three or more second holes, and the plurality of conductive parts 122 are three or more conductive parts 122. In the non-conductive part 121a, so as to be adjacent to each of the plurality of conductive parts 122, when the conductive part 122 is the upper conductive part 122 of the two conductive parts 122, the time from when the notification is made until the liquid level of the liquid stored in the tank 111 reaches a predetermined liquid level (for example, the necessary time (grace period) until the liquid supply stops including the moving time of the driver or the like from a predetermined waiting place to the water supply place as in the first embodiment) is displayed.

[0046] According to this, by changing the two conductive parts 122 connected to the operating part 124 among the plurality of conductive parts 122, the liquid level at which the notification is made can be changed more easily. That is, it is easier than the first embodiment to appropriately change the necessary time (grace period) until the liquid supply stops including the moving time of the driver or the like from a predetermined waiting place to the water supply place according to the situation at the site (for example, the distance from the waiting place of the operator such as the driver to the water supply place).

[0047] <Third Embodiment> Hereinafter, the notification device 220 according to the third embodiment of the present invention will be described with reference to FIG. 6. In this embodiment, the reference numerals having the same last two digits as those in the first embodiment are the same, and thus the description may be omitted. Also, regarding the parts not particularly described, since they are the same as those in the first embodiment, the description may be omitted.

[0048] The notification device 220 is mainly different from the notification device 20 in that it includes a plurality of conductive parts 222 different from the plurality of conductive parts 22 and an operating part 224 different from the operating part 24.

[0049] Each of the plurality of conductive parts 222 is mainly different from the conductive part 22 in that it further has a male terminal 222c. The male terminal 222c is attached to the tip of the bolt 222a.

[0050] The actuating part 224 mainly differs from the actuating part 24 in that it has two terminals 224a instead of two terminals 24a. Each of the two terminals 224a is a female terminal that fits with the male terminal 222c.

[0051] In addition, each of the plurality of conductive parts 222 may further have a female terminal. In this case, each of the two terminals of the actuating part 224 may be a male terminal that fits with the female terminal.

[0052] Also, similarly to the above-described second embodiment, a first male terminal or a first female terminal and a second female terminal or a second male terminal may be provided.

[0053] As described above, in the notification device 220 according to the embodiment of the present invention, each of the plurality of conductive parts 222 has a male terminal 222c, the actuating part 224 has two terminals 224a connected to the two conductive parts 222, and each of the two terminals 224a is a female terminal that fits with the male terminal 222c.

[0054] According to this, the conductive part 222 and the actuating part 224 can be easily connected electrically.

[0055] <Fourth Embodiment> Hereinafter, a notification device 320 according to a fourth embodiment of the present invention will be described with reference to FIG. 7. In this embodiment, in the above-described first embodiment, components denoted by the same reference numerals with the same last two digits are the same, and thus the description thereof may be omitted. Also, regarding parts not particularly described, since they are the same as those in the above-described first embodiment, the description thereof may be omitted.

[0056] The notification device 320 mainly differs from the notification device 20 in that it includes a notification part 323 different from the notification part 23.

[0057] The notification unit 323 performs wireless communication with the wireless communication terminal 340 and performs notification using the wireless communication terminal 340. For example, the notification unit 323 may be configured by a wireless communication module or the like, and may perform notification by causing some notification to be displayed on the display screen of the wireless communication terminal 340, or may perform notification by vibrating the wireless communication terminal 340, or may perform notification by generating sound from the wireless communication terminal 340. For example, predetermined settings are made in advance so that the notification unit 323 and the wireless communication terminal 340 can perform wireless communication.

[0058] Note that, similarly in the above-described second embodiment and the above-described third embodiment, the notification unit may perform wireless communication with the wireless communication terminal and perform notification using the wireless communication terminal.

[0059] As described above, in the notification device 320 according to the embodiment of the present invention, the notification unit 323 performs wireless communication with the wireless communication terminal 340 and performs notification using the wireless communication terminal 340.

[0060] According to this, it is possible to more surely make the driver of the vehicle or the like aware that notification is being performed.

[0061] <Other Embodiments> Although the embodiments of the present invention have been described above, they are merely examples, and do not particularly limit the present invention. The specific configuration and the like can be appropriately changed in design. Also, the actions and effects described in the embodiments of the invention are merely an enumeration of the most suitable actions and effects resulting from the present invention, and the actions and effects according to the present invention are not limited to those described in the embodiments of the present invention.

[0062] In the above-described first embodiment, the case where the plurality of conductive portions 22 are arranged side by side in the axial direction of the non-conductive portion 21a has been described, but the present invention is not limited to this. For example, the plurality of conductive portions may be arranged side by side in a direction orthogonal to the axial direction of the non-conductive portion. The same applies to the third embodiment and the fourth embodiment.

[0063] In the above-described second embodiment, the case where the plurality of conductive portions 122 are arranged side by side at equal intervals in the axial direction of the non-conductive portion 121a has been described, but the present invention is not limited to this. For example, the intervals at which the plurality of conductive portions are arranged may not be equal intervals. For example, the time intervals of the scales attached to the non-conductive portion are made constant for each position corresponding to the height positions of three or more adjacent conductive portions that are not at equal intervals, but since the cross-sectional shape inside the tank is, for example, substantially circular or substantially elliptical, etc., the change in the liquid level is slower near the central portion of the tank than near the lower end portion and the upper end portion of the tank. Therefore, the scale intervals may be changed according to the cross-sectional shape inside the tank. In this case, the scales are measured and displayed in advance for each tank (vehicle) to be used.

[0064] In the above-described third embodiment, the case where the male terminal 222c is attached to the tip of the bolt 222a has been described, but the present invention is not limited to this. For example, the first male terminal or the first female terminal may be disposed in the through-hole by being inserted into the through-hole of the non-conductive portion. In this case, while allowing the first male terminal or the first female terminal to come into contact with the liquid inside the non-conductive portion, a sealing material or the like may be provided to fill the gap between the first male terminal or the first female terminal and the non-conductive portion so that the liquid does not leak from the gap.

[0065] In each of the above embodiments, each of the first tubular portion and the first cylindrical portion, and the second tubular portion and the second cylindrical portion may be integrated. Further, in the above-described second embodiment, the first cylindrical portion, the cylindrical body, and the second cylindrical portion may be integrated. Further, in the above-described second embodiment, the first tubular portion, the first cylindrical portion, the cylindrical body, the second cylindrical portion, and the second tubular portion may be integrated.

Description of Reference Numerals

[0066] [[ID=1...]] 10 Vehicle 11, 111 Tank 12, 112 First Tubular Portion 13, 113 First Cylindrical Portion 14, 114 Second Tubular Portion 15, 115 Second Cylindrical Portion 20,120,220,320 Notification device 21,121,221 Cylinder 21a,121a,221a Non-conductive part 21b First hole 21c Second hole 22,122,222,322 Conductive part 22a,222a Bolt 22b,24i,222b Nut 222c Male terminal 23,323 Notification unit 24,124,224,324 Actuating part 24a,124a,224a,324a Terminal 24b,24g,124b,124g,224b,324b,324g Electric wire 24c,124c,324c Switch 24d,24f,324d,324f Power supply 24e,324e Relay 24h,124h,324h Box 30 Liquid 340 Wireless communication terminal

Claims

1. An alarm device attached to a vehicle, wherein the vehicle includes a tank for storing a liquid, a first tubular part that is tubular and has one end connected to the tank and the other end opening upward so as to communicate with the tank, a first cylindrical part that is cylindrical and connected to the first tubular part so as to communicate with the first tubular part, a second tubular part that is tubular and has one end connected to the tank above the first tubular part and the other end opening downward above the other end of the first tubular part so as to communicate with the tank, and a second cylindrical part that is cylindrical and connected to the second tubular part so as to communicate with the second tubular part. The alarm device includes a non-conductive part that is cylindrical and connected to the first cylindrical part so as to communicate with the first cylindrical part and connected to the second cylindrical part so as to communicate with the second cylindrical part, and a plurality of through-holes that penetrate the non-conductive part so as to open on the inner and outer surfaces of the non-conductive part, a cylindrical body having these; a plurality of conductive parts, each of which is disposed in one of the plurality of through-holes; an alarm part for giving an alarm; and an operating part that is electrically connected to two of the plurality of conductive parts and the alarm part, applies a voltage between the two conductive parts, and operates the alarm part to give the alarm when a current flows between the two conductive parts through the liquid that has flowed into the non-conductive part from the tank through the first tubular part. The alarm device is characterized by this.

2. The alarm device according to claim 1, wherein the cylindrical body is connected to the first cylindrical part and the second cylindrical part at a height position adjusted according to the required time from when the alarm is given until an operator stops supplying the liquid to the tank.

3. The plurality of conductive parts include three or more conductive parts that are arranged at intervals in the axial direction of the non-conductive part, and in the non-conductive part, for each position corresponding to the height position of each of the conductive parts, the time from when the alarm is given until the liquid level of the liquid stored in the tank reaches a predetermined liquid level is displayed. The alarm device according to claim 1 is characterized by this.

4. The alarm device according to any one of claims 1 to 3, wherein the alarm part performs wireless communication with a wireless communication terminal and gives the alarm using the wireless communication terminal.

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