JP2010070929A - Monitor device for confirming rear side - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance operability and safety, by making an operator easily viewing a monitor screen of reflecting an image of a rear part, and by making the operator accurately determine a situation of the rear part. <P>SOLUTION: This monitor device for confirming a rear side is installed with a monitor 7 in either of the left or right side of a driver seat 8, in a working machine provided with a rear side monitoring camera 6 and the monitor 7 for displaying the image photographed by the rear side monitoring camera 6, and is constituted to display, on a screen of the monitor 7, the image obtained photographedly by the rear side monitoring camera 6, while processing the image to be brought into a mirror image and to be made equivalent to an image viewed by a back mirror. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a monitor device for rearward confirmation in a work machine such as a hydraulic excavator, and in particular, displays on a monitor screen an image obtained by photographing with a rear monitoring camera provided rearward from the work machine. The present invention relates to a monitoring device for confirming the rear side.

2. Description of the Related Art Conventionally, a monitoring camera system in which a monitoring camera is provided at the rear of a vehicle such as a passenger car and its image is displayed on a monitor screen in a driver's cab to check the blind spot of a driver is well known. In recent years, working machines such as hydraulic excavators have been increasingly used in narrow urban areas, and accordingly, counterweights of working machines such as hydraulic excavators are likely to come into contact with obstacles and the like. Against this background, there is an increasing demand for installation of a system that mounts a rear monitoring camera at the rear of the work machine, displays a rear image on the monitor screen in the cab, and monitors the blind spot of the operator, and the invention is also proposed. (For example, refer to Patent Document 1).
Utility model registration No. 2592085 gazette.

  However, in the conventional rear monitoring camera system including Patent Document 1, the monitor is installed in front of the driver's seat, so that the monitor screen is far from the operator and is difficult to see, and the monitor hinders the operator's front view. There was a problem that it was difficult to drive.

  Therefore, there is a technical problem to be solved in order to improve the operability and safety by making it easier for the operator to see the monitor screen displaying the rear image and to accurately determine the rear situation. The present invention aims to solve this problem.

  The present invention has been proposed in order to achieve the above-mentioned object, and the invention according to claim 1 is a rear-confirmation monitor device having a rear monitoring camera and a monitor for displaying an image photographed by the rear monitoring camera. The monitor is installed on either the left or right side of the driver's seat, and the image obtained by photographing with the rear monitoring camera is used as a mirror image on the monitor screen, and the side mirror is used. Provided is a monitor device for backward confirmation provided with a monitor device that processes and displays the image so as to be equivalent to a video to be viewed.

  According to this configuration, by installing the monitor on either the left or right side of the driver's seat, the monitor screen can be brought close to the operator's eyes without obstructing the operator's front view. In addition, the monitor screen displays the image obtained by the rear monitoring camera as a mirror image, so that the operator can accurately determine the situation behind the work machine as if looking at the rear view mirror. Will be able to.

  According to a second aspect of the present invention, there is provided a backward confirmation monitor device for displaying machine information such as remaining fuel and water temperature on the screen of the monitor simultaneously with the video obtained by the backward monitoring camera.

  According to this configuration, the machine information such as the remaining fuel and the water temperature can be confirmed while confirming the above-mentioned image by the rear monitoring camera on the monitor screen.

  According to the first aspect of the present invention, the monitor screen can be brought close to the operator's eyes without obstructing the operator's forward view, so that improvement in visibility and operability can be expected. In addition, since the image is displayed as a mirror image on the monitor screen, the operator can accurately determine the situation behind the work machine as if looking at the rearview mirror, further improving visibility and operability. .

  According to the second aspect of the present invention, since the machine information such as the remaining fuel and the water temperature can be confirmed while confirming the image by the rear monitoring camera on the monitor screen, the operator can concentrate on the monitor screen. As a result, in addition to the effect of the first aspect of the invention, operator fatigue can be reduced, and safety and operability are further improved.

  In order to achieve the purpose of improving the operability and safety by allowing the operator to easily see the monitor screen displaying the rear image and accurately judging the rear situation, the rear surveillance camera and the rear surveillance camera are provided. In a work machine including a monitor device for rearward confirmation having a monitor for displaying an image photographed by a camera, the monitor is installed on either the left or right side of the driver's seat, and the rear monitor is displayed on the monitor screen. This is realized by providing a monitor device that displays the image obtained by photographing with the camera as a mirror image and processed so as to be equivalent to the image seen with the rearview mirror.

  Hereinafter, a working machine provided with the back confirmation monitor device of the present invention is explained using a suitable example. FIG. 1 is a plan view of a hydraulic excavator shown as an embodiment of a work machine according to the present invention. In the figure, a hydraulic excavator 1 includes a lower traveling body 2 having a traveling function, and an upper revolving body 3 mounted on the lower traveling body 2 so as to be able to swivel.

  The upper swing body 3 is provided with a cab (operator's cab) 4 on the left front side, and a working machine 5 capable of moving up and down, which is composed of a boom, an arm and the like, is installed in the center front side. A rear monitoring camera 6 is installed in the rear part of the upper swing body 3.

  The cab 4 is provided with a driver's seat 8 for an operator to sit and operate, and a monitor 7 for displaying an image obtained by the rear monitoring camera 6.

  The rear monitoring camera 6 and the monitor 7 are used as a set so as to constitute a rear confirmation monitor device. The monitor 7 is installed sideways on either the left or right side of the driver seat 8 (right side in the embodiment) so that the operator can sit on the driver seat 8 and see it. Further, on the screen of the monitor 7, the image 11 obtained by photographing with the rear monitoring camera 6 is used as a mirror image. For example, as shown in FIG. 4, the operator P sitting on the driver's seat 8 is indicated by a two-dot chain line. It is set so that it is processed and displayed so as to be equivalent to the video seen by the virtual side mirror 10. FIG. 2 shows an example in which the image obtained by photographing with the rear monitoring camera 6 is displayed as a mirror image on the screen of the monitor 7. In addition, the screen of the monitor 7 in this embodiment displays the display screen in the form of a side mirror screen so that the operator sees the image of the side mirror. However, the shape of this screen may be other than this. In addition, in order to convert the image 11 obtained by photographing with the rear monitoring camera 6 into a mirror image, the rear monitoring camera 6 may perform optical or electrical conversion processing, or within the monitor 7. You may process electrically.

  Therefore, the image 11 on the screen of the monitor 7 that the operator sits on the driver's seat 8 and sees can be seen in the state of an optical reflection image obtained through the rearview mirror, that is, a mirror image. The monitor 7 is attached to the cab 4 so that the operator can freely rotate it so that the operator can easily see it, and the angle of the screen can be adjusted freely.

  In such a configuration, when the excavator 1 is moved backward, the operator sits on the driver's seat 8 and looks at the screen of the side monitor 7, and the rear image captured by the rear monitoring camera 6. 11 can be confirmed to be the same as the image seen by the rearview mirror (virtual rearview mirror 10 shown in FIG. 4). The field of view that can be confirmed at this time can be within the range of the vicinity of the rear part, which is a blind spot, when the operator looks back from the cab 4 and confirms it. Thereby, the operator can determine whether or not there is a person or other obstacle in the backward direction of the excavator 1 before performing the backward operation, and can start the backward operation. That is, it becomes possible to predict the danger in advance.

  In addition, when a monitor is installed in front of the driver's seat 8 as in the conventional surveillance camera system, there is a problem that the monitor interferes with the operator's field of view, and the distance between the monitor screen and the operator's eyes In this embodiment, the monitor 7 is installed on either the left or right side of the driver's seat 8, so that the monitor 7 does not hinder the operator's front view. The distance between the screen of the monitor 7 and the operator's eyes can be made as close as possible to make the screen easier to see. Further, the visibility can be improved so as to see the rearview mirror, and the operation by the operator can be performed smoothly.

  In the structure of the above-described embodiment, the case where only the video 11 photographed by the rear monitoring camera 6 is displayed on the screen of the monitor 7 has been described. However, other than this, for example, as shown in FIG. You may comprise so that machine information, such as a remaining fuel and water temperature, may be displayed on the screen of the monitor 7 simultaneously with the image | video 11 by the monitoring camera 6. FIG. That is, FIG. 3 shows a state in which the image 11 from the rear monitoring camera 6, the machine information 12 indicating the remaining fuel, and the machine information 13 indicating the water temperature are simultaneously displayed on the screen of the monitor 7. In this case, the operator can concentrate on the screen of the monitor 7 and can reduce fatigue. Furthermore, if the rear monitoring information and the machine information are collected on the monitor screen, the structure can be simplified.

  Further, a monitor screen switching means is provided in the vicinity of the driver's seat 8, for example, a monitor screen mode that does not display the machine information shown in FIG. 2, and a monitor screen that simultaneously displays the video 11 and the machine information 12 and 13 shown in FIG. It may be possible to switch between modes.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

The top view of the hydraulic shovel shown as an example of the working machine which concerns on invention. The figure which shows an example of a monitor screen. The figure which shows the other example of a monitor screen. The figure which shows a virtual side mirror.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 2 Lower traveling body 3 Upper turning body 4 Cab 5 Work implement 6 Rear monitoring camera 7 Monitor 8 Driver's seat 10
10 Virtual side mirror 11 Image 12 Machine information indicating remaining fuel

Claims (2)

In a work machine including a rear confirmation monitor device having a rear monitoring camera and a monitor that displays an image captured by the rear monitoring camera,
The monitor is installed on either the left or right side of the driver's seat, and on the monitor screen, the image obtained by photographing with the rear monitoring camera is processed as a mirror image, and the image seen with the side mirror A monitor device for backward confirmation, wherein the display is performed so as to be equivalent.   2. The rear confirmation monitor device according to claim 1, wherein machine information such as remaining fuel and water temperature is displayed on the monitor screen simultaneously with the video obtained by the rear monitoring camera.

Images