Loading and unloading vehicle

Abstract

The present application provides a kind of loading and unloading vehicle, operator can easily confirm vehicle information when getting off. As the forklift (1) of the loading and unloading vehicle of the present application, it includes: vehicle body (1A) for operator (M) to ride;And image projection device (31) projects the image related to vehicle information to the direction (left) of the operator (M) getting off in a way of displaying the image on the road surface (G).In addition, the forklift (1) also includes a getting-off sensor, which detects the getting-off action when the operator (M) gets off, and the image projection device (31) projects the image when the getting-off sensor detects the getting-off action.

Description

Technical Field

[0001] This invention relates to a loading and unloading vehicle that displays vehicle information. Background Technology

[0002] Typically, forklifts used for loading and unloading vehicles include a display device for showing vehicle information. The display device includes an instrument panel or monitor, and is located in front of the seat so that the operator sitting in the seat can easily check the vehicle information (see, for example, Patent Document 1).

[0003] However, even when the vehicle information that should be confirmed is displayed on the display device, there are still cases where the operator gets out of the vehicle without looking at the display device, that is, forgets to confirm the vehicle information when getting out of the vehicle.

[0004] [Existing technical documents]

[0005] [Patent Literature]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2016-132535 Summary of the Invention

[0007] [The problem the invention aims to solve]

[0008] The present invention was made in view of the above situation, and its object is to provide a loading and unloading vehicle in which the operator can easily confirm the vehicle information when getting off the vehicle.

[0009] [Technical means to solve the problem]

[0010] To address the aforementioned issues, the loading and unloading vehicle of the present invention includes: a vehicle body for an operator to ride in; and an image projection device for projecting the image, which relates to vehicle information, onto the road surface in the direction in which the operator disembarks.

[0011] Additionally, the device preferably includes: an exit sensor to detect the exit action of the operator when exiting the vehicle, and an image projection device to project the image when the exit sensor detects the exit action.

[0012] In addition, the exit sensor preferably includes a seat departure sensor, which detects when the operator leaves the seat located on the vehicle body.

[0013] In addition, the disembarkation sensor preferably includes a human detection sensor that detects a portion of the operator.

[0014] Additionally, the device preferably includes: a push-button switch configured to switch between a power-on state and a power-off state; and a power circuit that supplies power to the image projection device until a specific time has elapsed when the push-button switch is switched from the power-on state to the power-off state.

[0015] [The effects of the invention]

[0016] According to the present invention, a loading and unloading vehicle can be provided in which the operator can easily confirm vehicle information when getting off the vehicle. Attached Figure Description

[0017] Figure 1 (A) and Figure 1 (B) is a schematic structural diagram of a loading and unloading vehicle according to an embodiment of the present invention. Figure 1 (A) is a side view. Figure 1 (B) is the top view.

[0018] Figure 2 This is a block diagram showing the general structure of a loading and unloading vehicle according to the same implementation method.

[0019] Figure 3 (A) Figure 3 (C) is a top view showing the state in which the image projection device projects an image.

[0020] Figure 4 (A) Figure 4 (C) is a top view showing the state in which the image projection device projects an image.

[0021] [Explanation of Symbols]

[0022] 1: Forklift (loading and unloading vehicle)

[0023] 1A: Vehicle body

[0024] 1B: Loading and unloading equipment

[0025] 11: Seating

[0026] 12: Operating device

[0027] 21: Forklift

[0028] 22: Lifting device

[0029] 31: Image projection device

[0030] 32: Parking brake

[0031] 33: Lighting device

[0032] 34: Push-button switch

[0033] 35: Lifting height sensor

[0034] 36: Exit sensor

[0035] 37: Power supply circuit

[0036] 38: Control device

[0037] G: Road surface

[0038] I1~I6: Images

[0039] M: Operator

[0040] X: Forward / backward direction

[0041] Y: Left and right directions

[0042] Z: Up / Down direction Detailed Implementation

[0043] Referring to the accompanying drawings, a forklift 1, which is a loading and unloading vehicle according to one embodiment of the present invention, will be described. The arrows in the drawings indicate mutually orthogonal straight lines in the forward / backward direction X, left / right direction Y, and up / down direction Z.

[0044] like Figure 1 (A) and Figure 1 As shown in (B), the counterbalanced forklift 1 includes a vehicle body 1A that travels on the road surface G and a loading / unloading device 1B for handling goods (not shown). The loading / unloading device 1B is located in front of the vehicle body 1A.

[0045] The forklift 1 includes a seat 11 for the operator M to sit on, and an operating device 12 for the operator M to operate the forklift 1 as structural elements disposed on the vehicle body 1A. The operating device 12 includes pedals, handles, and levers, and is disposed in front of the seat 11.

[0046] In addition, the forklift 1 includes a fork carriage 21 that can be inserted into a shelf (not shown) and a lifting device 22 that raises and lowers the fork carriage 21 based on the instructions of the operator M as structural elements of the loading and unloading device 1B.

[0047] In addition, the forklift 1 includes an image projection device 31 installed on the vehicle body 1A. Figure 1 The two-point locking line R in the figure represents the projection range of the image of the image projection device 31, which is used to project the image using the disembarkation sensor 36 described below (see reference). Figure 2 When operator M's action of getting out of the vehicle is detected, images I1 to I6 related to vehicle information are displayed on the road surface G (refer to...). Figure 3 (A) Figure 3 (C) and Figure 4 (A) Figure 4In the manner of (C), images I1 to I6 are projected toward the direction where operator M gets off the vehicle (i.e., to the left of vehicle body 1A).

[0048] Figure 2 A block diagram showing the general structure of forklift 1.

[0049] like Figure 2 As shown, the forklift 1 includes a parking brake 32, a lighting device 33, a push-button switch 34, a lift height sensor 35, a dismount sensor 36, a power circuit 37, and a control device 38 as structural elements related to the image projection device 31.

[0050] When the forklift 1 is parked, the parking brake 32 brakes the movement of the vehicle body 1A. The parking brake 32 is configured to be switchable to the following states using, for example, the parking brake lever or parking brake pedal (both omitted from the figure) constituting the operating device 12: a brake-on state that brakes the movement of the vehicle body 1A; and a brake-off state that does not brake the movement of the vehicle body 1A.

[0051] The lighting device 33 illuminates the road surface by projecting light in front of the forklift 1. The lighting device 33 is configured to be switched to the following states using, for example, a headlight switch (not shown) that constitutes the operating device 12: a headlight on state that projects light; and a headlight off state that does not project light.

[0052] The push-button switch 34 connects or disconnects the circuit to the power supply (not shown) of the forklift 1. The push-button switch 34 is configured to switch between a power-on state and a power-off state using a key (not shown) inserted into it. The power-on state is the state in which the push-button switch 34 closes the circuit to enable the driving function of the vehicle body 1A, the loading and unloading function of the loading and unloading device 1B, and other specific functions. Conversely, the power-off state is the state in which the push-button switch 34 opens the circuit to disable the driving and loading / unloading functions. Furthermore, in the power-off state, not all functions are disabled; for example, to ensure that the lighting function of the lighting device 33, such as illuminating the road surface, remains active, power is supplied to the lighting device 33 regardless of the power-on or power-off state.

[0053] A lift height sensor 35 is installed on the lifting device 22 (specifically, the mast) to detect the lift height (height from the road surface G) of the fork 21. The lift height sensor 35 detects a non-grounded state where the fork 21 is not connected to the road surface G by detecting a height above a specific lift height, and detects a grounded state where the fork 21 is connected to the road surface G by detecting a height below the specific lift height.

[0054] The exit sensor 36 detects the exit action of operator M when he / she gets off the vehicle. In this embodiment, the exit sensor 36 includes a departure sensor that detects operator M leaving seat 11. The departure sensor includes a load sensor that detects the load acting on seat 11.

[0055] The power supply circuit 37 supplies power to the image projection device 31. The power supply circuit 37 has a timer function, which supplies power to the image projection device 31 until a specific time has elapsed when the push-button switch 34 is switched from the power-on state to the power-off state. Specifically, it is configured such that if the push-button switch 34 is switched from the power-on state to the power-off state, power is supplied to the image projection device 31 until the specific time has elapsed, and then the power supply to the image projection device 31 is blocked after the specific time has elapsed.

[0056] Control device 38 obtains vehicle information, which is information related to forklift 1, and controls image projection device 31 to project an image corresponding to the vehicle information onto road surface G. That is, control device 38 changes the image projected by image projection device 31. Control device 38 obtains information from parking brake 32, lighting device 33, push-button switch 34, lift height sensor 35, and other parts of forklift 1.

[0057] Reference Figure 3 (A) Figure 3 (C) and Figure 4 (A) Figure 4 (C) will describe the images I1 to I6 projected by the image projection device 31.

[0058] When the system of the forklift 1 malfunctions, the image projection device 31 will... Figure 3 Image I1, as shown in (A), is projected onto the road surface G for display. That is, image I1 is an image used to remind forklift 1 of maintenance, including attention-raising marks (figure marks) to draw attention to the use of forklift 1.

[0059] Furthermore, when the specific switches (excluding push-button switch 34) included in the forklift 1 are not in an arbitrary state, the image projection device 31 will... Figure 3 Image I2, as shown in (B), is projected onto the road surface G for display. That is, image I2 is an image used to remind the inspection team of the switches included in the forklift 1, including inspection reminder marks (text) that invoke the inspection of the switches.

[0060] In addition, when the parking brake 32 is not in the braking engagement state, the image projection device 31 will... Figure 3Image I3, as shown in (C), is projected onto the road surface G for display. That is, image I3 is an image used to remind users to check the parking brake 32 (switch to the brake engaged state), including a mark (figure symbol) indicating that the parking brake 32 is in the brake disengaged state.

[0061] In addition, when the lighting device 33 is not in the headlight-off state, the image projection device 31 will... Figure 4 Image I4, as shown in (A), is projected onto the road surface G for display. That is, image I4 is an image used to remind the viewer to check the lighting device 33 (to switch the headlights off state), including a mark (figure symbol) indicating that the lighting device 33 is in the headlight on state.

[0062] In addition, when the push-button switch 34 is not in the power-off state, the image projection device 31 will... Figure 4 Image I5, as shown in (B), is projected onto the road surface G for display. That is, image I5 is an image used to remind users to check the push-button switch 34 (to switch to the power off state), including markings (text and symbols) indicating that the push-button switch 34 is in the power on state.

[0063] Additionally, when the height sensor 35 fails to detect the grounding state of the fork 21, the image projection device 31 will... Figure 4 Image I6, shown in (C), is projected onto the road surface G for display. That is, image I6 is an image used to remind users to check the lifting height (lowering of fork 21) of fork 21, including a mark (figure symbol) indicating that fork 21 is in a non-grounded state.

[0064] Furthermore, when the image projection device 31 projects two or more images from images I1 to I6, it projects two or more images sequentially at a specific time interval for display.

[0065] The following effects can be obtained through this implementation method.

[0066] (1) It can project images I1 to I6 related to vehicle information onto the feet of operator M for display. Therefore, operator M can easily confirm vehicle information by observing images I1 to I6 displayed at his feet when getting out of the vehicle.

[0067] (2) The image projection device 31 projects images I1 to I6 when the disembarkation sensor 36 detects the disembarkation action. According to the above structure, energy saving can be achieved by displaying images I1 to I6 only when the operator M disembarks.

[0068] (3) The exit sensor 36 includes an exit sensor that detects when the operator M leaves the seat 11. According to the structure, the exit sensor 36 can detect the exit action of the operator M when the operator M gets up from the seat 11.

[0069] (4) The forklift 1 also includes a power supply circuit 37, which supplies power to the image projection device 31 until a specific time has elapsed when the push-button switch 34 is switched from the power-on state to the power-off state. According to the above structure, even when the push-button switch 34 is in the power-off state, images I1 to I6 can be projected for a specific time, and energy saving can be achieved after the specific time has elapsed.

[0070] This invention is not limited to the described embodiments, and the structure can be modified. For example, it can be implemented by modifying the following methods, or by combining the following modifications.

[0071] • The structure of the disembarkation sensor 36 can be appropriately modified. For example, the disembarkation sensor 36 may include a human sensor that detects a portion of the operator's body. According to the structure, the disembarkation sensor 36 can detect the disembarkation action of operator M by detecting a portion of operator M (e.g., the foot about to land on the ground G).

[0072] • The configuration and structure of the image projection device 31 can be appropriately modified, and the image projected onto the road surface G can also be appropriately modified. Furthermore, the image can be projected onto the right side of the vehicle body 1A. Moreover, it can also be configured such that the image is projected not only onto the side of the vehicle body 1A, but also onto the periphery including the front and rear of the vehicle body 1A.

[0073] • This invention can be applied to loading and unloading vehicles other than counterbalance forklifts 1 (e.g., reach trucks, side forklifts, electric pickup trucks, tractor trucks, or container handling trucks).

Claims

1. A loading and unloading vehicle, characterized in that, include: The vehicle itself is for the operator to ride in; An image projection device projects the image toward the direction in which the operator gets out of the vehicle, in a manner that displays an image related to vehicle information on the road surface. Fork frame, mounted on the vehicle body; as well as A lifting device is provided to raise and lower the fork carriage, wherein the lifting device includes a height sensor that detects the lifting height of the fork carriage. When the height sensor does not detect that the fork is in contact with the road surface, the image projection device projects the image and displays it on the road surface.

2. The loading and unloading vehicle according to claim 1, characterized in that, Also includes: The vehicle disembarkation sensor detects the operator's disembarkation action. The image projection device projects the image when the vehicle disembarkation sensor detects the disembarkation action.

3. The loading and unloading vehicle according to claim 2, characterized in that: The exit sensor includes a departure sensor, which detects when the operator leaves the seat located on the vehicle body.

4. The loading and unloading vehicle according to claim 2, characterized in that: The disembarkation sensor includes a human detection sensor that detects a portion of the operator.

5. The loading and unloading vehicle according to claim 1, characterized in that, Also includes: A push-button switch is configured to switch between a power-on state and a power-off state. as well as The power supply circuit supplies power to the image projection device until a specific time has elapsed when the push-button switch is switched from the power-on state to the power-off state.

Images