JP2016078705A - Display device for work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device of a work vehicle such as a tractor and a combine which can more effectively transmit notification information.SOLUTION: A display device of a work vehicle of the invention is a display device of a work vehicle which displays notification information of which a worker should be notified in driving a work vehicle. Warning lamps each are disposed on the right and left sides of the measuring instrument disposed in the central part of the display surface of the display device. One of the warning lamps serves as an important warning lamp for notifying the worker of an important warning to urge him/her to stop work, and the other warning lamp serves as a continuable warning lamp for notifying him/her of a warning of such a degree that the work can be continued.SELECTED DRAWING: Figure 7

Description

  The present invention relates to improvement in the transmission of notification information by a display device of a work vehicle such as a tractor or a combine.

  Conventionally, for example, a display device for a work vehicle such as a tractor is suitable for entering the field of view of an operator who is operated by instruments showing various important information such as the speed of the work vehicle, the engine rotation speed, the water temperature and the fuel capacity. It is placed in front of the driver's seat so that it can be recognized accurately.

  In addition, the display device displays various information such as a warning regarding engine oil pressure and battery charging, a warning regarding the amount of stored grain in the work machine, as other notification information related to the work vehicle and the work machine towing, etc. (for example, Patent Document 1).

JP 2010-252721 A

  However, although the technique described in Patent Document 1 described above has a certain effect in that information to be notified is displayed, the operator cannot intuitively grasp the importance level of the information. In other words, it is difficult for the worker to sensuously distinguish between a serious warning that should be stopped and a warning that can continue the work.

  In addition, although there is a certain effect in that the display area is divided so that the warning about the work vehicle itself and the warning about the work machine towing are not mixed, a sufficient display area cannot be secured due to the structure of the display device. Therefore, the number of information to be notified to the worker is limited.

  Then, an object of this invention is to provide the display apparatus of work vehicles, such as a tractor and a combine, which can improve the transmission property of alerting | reporting information.

  A display device for a work vehicle according to a first aspect of the present invention is a display device for a work vehicle that displays notification information that should be notified to an operator during operation of the work vehicle, and is an instrument that is disposed at the center of the display surface. Warning lights are arranged on the left and right sides, one warning light is a serious warning light that gives a serious warning to stop the work, and the other warning light can continue to give a warning to the extent that work can be continued. It is a warning light.

  In such a work vehicle display device, warning lights having different importance levels are arranged on the left and right sides of the instrument, so that the importance level of the notification information can be intuitively grasped, and the worker can quickly respond to the warning contents. It can be easily determined whether or not to deal with.

  In addition, by placing the warnings in two types, the critical warning light and the continuable warning light, it is easy to determine whether the work should be stopped immediately or whether the work can be continued with continued attention. be able to.

  A work vehicle display device according to a second aspect of the present invention is the work vehicle display device according to the first aspect of the present invention, wherein the critical warning light is configured to be lit or blinking with a red light source, The continuation enable warning lamp is configured to be lit or blinking with a yellow light source.

  In such a display device for a work vehicle, the notification of the critical warning light is performed in red, and the notification of the continuable warning light is performed in yellow, so that the operator can grasp the importance of the warning instantly and intuitively.

  A display device for a work vehicle according to a third aspect of the present invention is the display device for a work vehicle according to the first or second aspect of the invention, wherein the right and left sides of the instrument arranged at the center of the display surface The indicator unit is provided with a light source that includes a plurality of display items related to the machine of the work vehicle and that can be turned on or blinked, and the other indicator The section is composed of a plurality of display items relating to a work machine towed by a work vehicle, and a work machine corresponding indicator section having a light source that can be turned on or blinked.

  In such a display device for a work vehicle, an operator corresponding indicator is provided on one of the right and left sides of the instrument, and a work implement indicator corresponding to the work machine is provided on the other to notify the operator. It is possible to intuitively understand to which part the information that should be related relates to, and it is possible to easily determine the behavior and thought that the operator should deal with.

  A work vehicle display device according to a fourth aspect of the present invention is the work vehicle display device according to any one of the first to third aspects, wherein the work vehicle display device is disposed at a central portion of the display surface. The meter is provided with a matrix type display.

  In such a work vehicle display device, by providing a matrix type display device, information to be notified to the operator can be displayed in various forms such as characters, figures, graphs, etc. that can be easily recognized. Can be shown to the person in an easy-to-understand manner.

  In addition, by forming the display device in a meter arranged in the center of the display surface of the display device, the movement of the line of sight of the operator who is driving can be minimized, and the time during which the traveling direction is not seen during driving Can be shortened to improve safety.

  A display device for a work vehicle according to a fifth aspect of the present invention is the display device for a work vehicle according to the fourth aspect of the present invention, wherein the display is constituted by a liquid crystal display device.

  In such a work vehicle display device, since a liquid crystal display device is used as a display device, a display device with a large amount of information to be displayed and a high reliability can be introduced at low cost. It is advantageous.

  A display device for a work vehicle according to a sixth aspect of the present invention is the display device for a work vehicle according to the fourth or fifth aspect of the invention, wherein the critical warning light and the continuation-ready warning light are used for notification. Further, the warning contents can be displayed on the display device.

  In such a work vehicle display device, the warning content of the critical warning light and the continuation possible warning light can be displayed on the display device, so that the warning content can be easily and clearly shown to the operator during driving. it can.

  According to the present invention, the warning lights having different importance levels are arranged on the left and right sides of the instrument, so that the importance level of the notification information can be intuitively grasped, and the operator should promptly deal with the warning contents. It can be easily determined whether or not.

It is a right view of the tractor concerning this embodiment. It is a partial see-through plan view of the tractor concerning this embodiment. It is a front view of the tractor concerning this embodiment. It is an upper perspective view of the tractor concerning this embodiment. It is explanatory drawing of the steering wheel vicinity which the driver | operator of the tractor which concerns on this embodiment can visually recognize. It is a front view which shows the non-energized state of the display apparatus which concerns on this embodiment. It is a front view which shows the state which displayed all the displayable places of the display apparatus which concerns on this embodiment. It is a left upper perspective view of the display device concerning this embodiment. It is a right upper perspective view of a display device concerning this embodiment. It is an AA cutting part end elevation of Drawing 7. It is a BB cutting part end view of Drawing 7. It is CC cut part end elevation of FIG. It is an example of the display content displayed on a liquid crystal display device. It is an example of the display content displayed on a liquid crystal display device. It is an example of the display content displayed on a liquid crystal display device. It is an example of the display content displayed on a liquid crystal display device.

  Embodiments of the present invention will be described below with reference to the drawings, taking a tractor as a work vehicle as an example.

[Work vehicle]
A shown in FIGS. 1 to 4 is a tractor. The tractor A mainly includes a chassis frame S, an engine E, a transmission T, a front axle F, a rear axle R, and an operating unit U. A pair of left and right front wheels FT, FT are linked to the front axle F, a pair of left and right rear wheels RT, RT are linked to the rear axle R, the engine E is surrounded by the bonnet B, and the driving unit U is By surrounding the cabin C, a basic configuration as a passenger vehicle is achieved.

  The chassis frame S forms a skeleton of the tractor A, and the engine E, the transmission T, the front axle F, the rear axle R, and the like are attached to the chassis frame S.

  The engine E is mounted on the chassis frame S immediately after the front wheels FT, FT, and generates rotational power to drive a working machine or the like that moves forward or backward of the tractor A or tows (not shown). The output of the engine E appears as appropriate rotational power through the control device by operating an accelerator pedal AP disposed in the operation unit U.

  Further, as shown in FIG. 4, the engine E is provided with a muffler M that is connected to an exhaust purification device (DPF) DP and is bent to stand outside the hood B. In the bonnet B, a radiator, a cleaning fan, a battery and the like (not shown) are arranged.

  The transmission T includes a coupling mechanism that inputs the rotational power of the engine E in order to transmit the rotational power of the engine E to the front axle F and the rear axle R.

  The front axle F transmits the rotational power of the engine E to the front wheels FT and FT, and enables the steering angle operation of the front wheels FT and FT in conjunction with the steering wheel SH disposed in the operation unit U. .

  The rear axle R transmits the rotational power of the engine E to the rear wheels RT, RT, and is linked to a PTO output device (not shown). The PTO output device allows the rotational power of the engine E to be input to a working machine or the like that is towed by operating a PTO switch (not shown) disposed in the operation unit U.

  As shown in FIGS. 1, 2, and 4, the operation unit U arranges a dashboard D via a windshield G at the rear end of the bonnet B, and places the display device 1 on the upper surface of the dashboard D. The steering wheel support shaft AX protrudes upward from the rear position of the display device 1 and the steering wheel SH is attached to the upper end portion of the steering wheel support shaft AX. The driver's seat US is located in

  Further, as shown in FIG. 2, a clutch pedal CP is disposed on the left side of the display device 1 near the lower floor surface Y, and left and right brake pedals BL and BR are disposed adjacent to each other on the right side. An accelerator pedal AP is arranged on the right side of the left and right brake pedals BL and BR.

  Also, on the left and right sides of the driver's seat US, especially on the right side, switches and levers for enabling various operations such as switching of various modes and traction work machines, etc., are intensively arranged for operator operation. In addition, a liquid crystal display LC is disposed in front of the right side of the driver's seat US so that the operation status and setting contents can be visually recognized.

  As described above, the tractor A according to the embodiment of the present invention is configured.

[Display device]
Next, the display device 1 which is the gist of the present invention will be described in detail.

  A display device 1 of a tractor A as a work vehicle according to the present invention is a display device 1 of a tractor A that displays notification information to be notified to an operator during operation of the tractor A, as shown in FIGS. The base display board 2, the intermediate display board 3 disposed in front of the base display board 2 and covering a part of the base display board 2, and the intermediate display board 3 disposed in front of the intermediate display board 3 A front display panel 4 that covers the portion, the base display panel 2, the intermediate display panel 3, and the front display panel 4 are configured in a stepped manner, and the intermediate between the base display panel 2 and the intermediate display panel 3 An outer pointer 6 is exposed from the peripheral edge 5 of the display panel 3, and an inner pointer 8 is exposed between the intermediate display board 3 and the front display board 4 from the peripheral edge 7 of the front display board 4.

  Specifically, the intermediate display board 3 is formed in a substantially semicircular shape, the front display board 4 is formed in a substantially semicircular shape concentrically with the intermediate display board 3, and the front display board 4 is provided with a display unit 9. The display unit 9 constitutes a matrix-type display 10 that is concentric with the front display panel 4 and is substantially semicircular.

  Further, the outer pointer 6 includes two pointers 6L and 6R, that is, a left outer pointer 6L and a right outer pointer 6R which are exposed from the left and right peripheral edge portions 5 of the intermediate display board 3.

  In this way, the display device 1 allocates various instruments by concentrating the front display plate 4 around the front display plate 4.

  Then, warning lights are respectively provided on the left and right sides of the above-mentioned instruments arranged in the center of the display surface that is visually recognized by the operator in front of the display device 1, and one warning light gives a serious warning to stop the work. This is a serious warning lamp 51L to notify, and the other warning lamp is configured as a continuable warning lamp 51R that notifies a warning to the extent that the work can be continued.

  The critical warning lamp 51L is configured to be turned on or blinking by the red light source 29, and the continuation enabling warning lamp 51R is configured to be turned on or blinked by the yellow light source 29.

  In addition, indicator units are arranged on the left and right sides of the instruments arranged in the center of the display surface, and one indicator unit consists of a plurality of display items 28 relating to the machine of the work vehicle A, each of which can be lit or blinked freely. This machine-compatible indicator unit 90 having a light source 29 is configured, and the other indicator unit includes a plurality of display items 28 relating to a work machine towed by a work vehicle, and the like. The working machine corresponding | compatible indicator part 91 provided is comprised.

  Furthermore, the serious warning lamp 51L and the continuation-possible warning lamp 51R are configured so that warning contents can be displayed on the above-described display device 10 at the time of notification.

  By configuring the display device 1 in this way, the warning lights 51L and 51R having different importance levels are arranged on the left and right sides of the instruments, so that the importance level of the notification information can be grasped intuitively, and the warning contents Therefore, it is possible to easily determine whether or not the operator should deal with the situation immediately.

  Hereinafter, the structure of each part will be described with reference to the drawings. In addition, the left and right and up and down of the display device 1 will be described in correspondence with the left and right and up and down in the drawing. That is, in the drawing, the right side is the right and the upper side is the top.

  First, the main notification information that the display device 1 should inform the operator who operates the tractor A is the vehicle speed and the engine rotation speed, the remaining amount of fuel, and the temperature of the engine E, which are important information to be grasped during driving. However, in order to reliably notify various warnings to the worker and to grasp the contents accurately, it is possible to configure the warning as described below.

  In the display device 1 according to the present embodiment, an example in which the various types of warning information described above are appropriately displayed will be described. However, the information to be displayed is not limited to the present embodiment, and the gist of the present invention is described. Various displays can be targeted within the range.

  As shown in FIGS. 6, 8, and 9, the display device 1 has a substantially elliptical shape with the left-right direction as a longitudinal direction, and a bottomed box shape in which the lower part 11 of the ellipse is crushed in the horizontal direction. As shown in FIGS. 9 to 11, the display device 1 mainly includes a base frame body 12 having a front opening that constitutes most of the appearance, and a base frame body 12 covering a front opening portion of the base frame body 12. A transparent cover body 13 to be fitted and a display unit 14 including a display surface that is actually visible to the operator are configured.

  In addition, as shown in FIGS. 1 and 5, the display device 1 is configured so that at least the display device between the spokes of the steering wheel SH can be obtained when the worker H who is driving the tractor A directs the line of sight HS toward the display device 1. It is comprised so that the instrument of 1 center part can be visually recognized favorably without a blind spot.

  As described above, the base frame 12 is formed in a substantially elliptical shape with a bottomed box having a front opening, and a first flange 16 is provided on the middle of the inner wall 15 so as to protrude from the front of the first flange 16. Similarly, a second flange 17 is provided protruding at a predetermined interval. The front outer wall 18 is formed with a fitting recess 19 that can be fitted to the cover body 13.

  The cover body 13 is formed of a transparent member, and is formed in a bottomed box shape with a rear opening and a substantially elliptical shape that covers and fits the front outer wall of the base frame body 12. That is, the bottom 20 of the cover body 13 covers the opening of the base frame body 12 by fitting the opening of the cover body 13 to the opening of the base frame body 12 and fitting them together.

  Further, the bottom portion 20 of the cover body 13 is formed with a concave curved surface 21 on the inner side to reduce the reflection of external light and the like so as to improve the visibility of the operator. In the display device 1, parts other than the bottom 20 of the cover body 13 are embedded in the dashboard D.

  The display unit 14 mainly includes a mechanism unit 22, a base display plate 2, a left outer pointer 6L, a right outer pointer 6R, an intermediate display plate 3, an inner pointer 8, and a front display plate 4.

  The mechanism portion 22 is composed of a plate-like wiring board (glass epoxy) 23 and is formed in a substantially elliptical shape approximating the opening shape of the base frame body 12 so that it can be installed inside the base frame body 12. The peripheral edge of the mechanism portion 22 is placed on the upper surface of the first flange 16, and is fixed to the first flange 16 by a bolt (not shown) or the like and integrated with the base frame body 12.

  In addition, the mechanism portion 22 includes the rotation mechanisms 27L, 27R, and 27C so that the pointer shaft end portions 26L, 26R, and 26C of the left and right outer pointers 6L and 6R and the inner pointer 8 indicate accurate values as instruments. It is being fixed so that rotation is possible. In addition, on the upper surface of the mechanism unit 22, each display item 28, etc. so that a plurality of display items 28, etc. formed on the base display plate 2 can be lit and blinked by transmitting light from the back side of the base display plate 2. The LED light source 29 is mounted on the upper surface of the mechanism portion 22 corresponding to the position immediately after.

  The pointers 6L, 6R, 8 are made of acrylic resin including the pointer shafts 25L, 25R, 25C, and the LED light sources 29L, 29R, 29C are mounted toward the end surfaces of the pointer shaft end portions 26L, 26R, 26C. doing. In mounting the LED light sources 29L, 29R, and 29C, pointer flanges 30L, 30R, and 30C are formed on the back side of the wiring board 23 so as to surround the rotation mechanisms 27L, 27R, and 27C, and the pointer flanges 30L, 30R are formed. , 30C are mounted with LED light sources 29L, 29R, 29C.

  The LED light sources 29, 29L, 29R, and 29C described above may be mounted with light sources that emit red, green, and blue at the same portion of the mechanism unit 22 so that a plurality of colors can be emitted.

  As shown in FIG. 7, the base display board 2 has a film-like display sheet 31 exposed on the surface and visible to the operator, and a display sheet 31 as shown in FIGS. The sheet-like base display material 32 that maintains the strength of the plate 2 is used. The base display board 2 is disposed in front of the mechanism portion 22 and is formed in a substantially elliptical shape approximating the opening shape of the base frame body 12 so that it can be installed inside the base frame body 12. Specifically, the lower part of the ellipse is crushed in the horizontal direction, and a large number of display items 28 are formed on the surface.

  As shown in FIGS. 11 and 12, the display sheet 31 has translucency and is configured such that the display item 28 can be turned on from the light source on the back side. The base display material 32 has a light shielding property, and is configured so that a position corresponding to the display item 28 formed on the display sheet 31 is formed so that light from the light source is transmitted through the display sheet 31. In addition, the base display member 32 is formed with an LED mounting recess 33 in which the vicinity of the pointer shaft 25C of the inner pointer 8 is recessed backward, and a plurality of LEDs are formed in a substantially semicircular shape around the pointer shaft 25C of the inner pointer 8 in the recess 33. The light source 29S is mounted so that an intermediate display plate 3 described later can be turned on or blinked.

  In the LED light source 29S described above, a light source that emits red, green, or blue may be mounted at the same location of the mechanism unit 22 so that a plurality of colors can be emitted.

  The peripheral edge of the base display board 2 is placed on the upper surface of the second flange 17, and is fixed to the second flange 17 by a bolt (not shown) or the like and integrated with the base frame 12.

  The base display plate 2 has needle shaft insertion holes 34L, 34R, 34C penetrating the base display plate 2 so that the pointer shafts 25L, 25R, 25C of the left and right outer pointers 6L, 6R and the inner pointer 8 can be inserted. Has been drilled.

  As shown in FIG. 6, the large number of display items 28 formed on the display sheet 31 of the base display panel 2 are the main display items that can be visually recognized even when the tractor A is in the non-energized state, and the FIG. 6 shown in FIG. Are configured with sub-display items that can be displayed and are visible when energized (not shown).

  Further, the non-displayed portion where the main / sub display items are not arranged is colored black, and the visibility is improved by the difference in contrast with the main / sub display items.

  The main display items are the fuel scale 36 constituting the fuel gauge 35 and the water temperature scale 38 constituting the water temperature gauge 37, both of which are colored white. The main display item can be improved in visibility by transmitting light from the back surface of the base display board 2 by an illumination member such as the LED light source 29 mounted on the mechanism unit 22 by the operator's switch operation. It is composed.

  The fuel scale 36 forms an arc 39 having the same curvature as the curvature of the intermediate display plate 3 on the left side of the intermediate display plate 3, and the arc 39 forms a scale serving as a guide for the remaining amount of fuel. Note that the positions of the upper and lower ends of the arc 39 correspond to a substantially movable range of the left outer pointer 6L described later.

  The water temperature scale 38 forms an arc 40 having the same curvature as the curvature of the intermediate display board 3 in the vicinity of the right side of the intermediate display board 3, and the arc 40 forms a scale serving as a measure of the water temperature. The positions of the upper and lower ends of the arc 40 correspond to a substantially movable range of a right outer pointer 6R described later.

  As shown in FIG. 7, the sub display item includes a pair of direction indicator lights 50L and 50R, two warning lights 51L and 51R, a machine-compatible indicator unit 90, and a work machine-compatible indicator unit 91. Yes.

  The sub-display item is formed to be translucent with emphasis on translucency in order to transmit the light of the LED light source 29 mounted on the mechanism unit 22 located behind to the surface of the base display plate 2 for display. Note that the LED light source 29 has different colors depending on the contents to be displayed. Therefore, the light accompanied by the color is visually recognized from the surface of the base display panel 2 as it is.

  In addition, the LED light source 29 mentioned above may mount the light source which emits red, green, and blue in the same location of the mechanism part 22 so that a several color can be light-emitted.

  As shown in FIG. 7, the direction indicator lamps 50L and 50R are formed in the vicinity of the peripheral portion of the intermediate display plate 3 above the left and right sides of the intermediate display plate 3, that is, above the fuel scale 36 and the water temperature scale 38. Yes. The direction indicator lamps 50L and 50R notify the traveling direction of the tractor A by the operator's lever operation, and are configured to blink green by the LED light source 29 mounted on the mechanism unit 22.

  Further, the warning lights 51L and 51R are formed on the upper outside of the fuel scale 36 and the water temperature scale 38. Note that the two warning lights 51L and 51R notify different warning levels, and the left warning light 51L is provided to a working machine such as tractor A or towing, for example, work such as engine oil pressure abnormality or overheating. Is arranged on the left side of the instruments arranged in the center of the display device 1 as a serious warning lamp 51L and mounted on the mechanism unit 22. The LED light source 29 lights or blinks red to alert the operator.

  Note that the warning contents such as engine oil pressure abnormality and overheat described above are also displayed on the display unit 9 of the front display panel 4 to be described later, so that the operator can grasp the warning contents instantly.

  The right warning light 51R on the other side has a problem that allows the tractor A, the working machine, etc., towing, etc., to be able to continue work such as an abnormality of the display device 1 or a lift of the working machine does not automatically rise (manual OK). The warning light 51R is arranged on the right side as a continuable warning lamp 51R, and is lit or blinks yellow by the LED light source 29 mounted on the mechanism unit 22 to alert the operator.

  The warning contents such as the abnormality of the display device 1 described above and the lift of the work machine not automatically rising are also displayed on the display unit 9 of the front display board 4 to be described later, so that the worker can grasp the warning contents instantly. be able to.

  As shown in FIG. 7, the machine corresponding indicator section 90 is formed on the left side of the intermediate display board 3 and further on the left side of the fuel scale 36. That is, the machine-compatible indicator 90 is formed on the base display board 2 near the corner surrounded by the left front side wall of the base frame 12.

  The machine-compatible indicator section 90 includes eight display items 28 related to the tractor A, which is a work vehicle main body. The display items 28 are a parking light 54, a brake connection / disconnection light 55, a four-wheel drive light 56, a PTO light 57, a turning double speed light 58, a turning auto brake light 59, a turning two-wheel drive light 60, and a DPF light 61. These display the various states of the tractor A, and the LED light source 29 mounted on the mechanism unit 22 lights or blinks each display item 28 to notify the operator.

  Each display item 28 uses LED light sources such as red, yellow, and green individually depending on the contents thereof, and it is more reliable to notify the operator with a color image to be given to the eye.

  The work implement corresponding indicator portion 91 is formed on the right side of the intermediate display board 3 and further on the right side of the water temperature scale 38. That is, the work implement corresponding indicator portion 91 is formed on the base display board 2 in the vicinity of the corner surrounded by the right front side wall of the base frame body 12.

  The work implement corresponding indicator unit 91 includes eight display items 28 related to the work machine towed by the tractor A and the like. The display items 28 are an engine rotation control lamp 62, a turning mode switching lamp 63, a lift lamp 64, a backup lamp 65, a depth automatic lamp 66, a turning ascending lamp 67, a work implement communication lamp 68, and an inclination automatic control lamp 69. Various states of the work machine are displayed, and each display item 28 is lit or blinked by an LED light source 29 mounted on the mechanism unit 22 to notify the operator.

  Each display item 28 uses an LED light source such as yellow or green individually depending on the contents thereof, and the notification to the worker is more surely accompanied by an image of the color to be given to the eye.

  As shown in FIGS. 6, 11, and 12, the left and right outer pointers 6 </ b> L and 6 </ b> R are configured by pointers 24 </ b> L and 24 </ b> R and pointer shafts 25 </ b> L and 25 </ b> R. It is rotatably fixed through mechanisms 27L and 27R. Specifically, the pointer shafts 25L and 25R are disposed in the vicinity of the left and right sides slightly shifted from the virtual central axis that is the center of the intermediate display board 3, and the distal ends of the pointers 24L and 24R are in front. It is configured so as to be exposed from the peripheral edge portion 5 of the intermediate display plate 3 in view. That is, most of the left and right outer hands 6 </ b> L and 6 </ b> R are covered on the back side of the intermediate display board 3.

  Accordingly, the exposed tip portions of the left and right outer pointers 6L and 6R indicate the scale ranges of the fuel scale 36 and the water temperature scale 38, and the fuel gauge 35 and the water temperature are determined by the left and right outer pointers 6L and 6R and the respective scales 36 and 38. A total of 37 is configured.

  Further, if the LED light sources 29L and 29R corresponding to the pointers 6L and 6R described above are caused to emit light, the light is entirely emitted until it reaches the tips of the pointers 6L and 6R while being transmitted and reflected through the pointer shafts 25L and 25R. Can be made. In addition, the acrylic resin which forms each pointer | guide 6L, 6R gives coloring of red etc. to a transparent base material, forms acrylic resin itself with red etc., or makes acrylic resin itself transparent, and is the color of LED light source 29L, 29R. Thus, the pointers 6L and 6R can be colored.

  Note that the left and right outer hands 6L and 6R of the display device 1 according to the present embodiment are configured to be lit regardless of day and night so that the operator can easily see the left and right outer hands 6L and 6R. At that time, a photodetector may be incorporated so that the illuminance of the light source is automatically adjusted according to the external light intensity.

  In addition, the left and right outer pointers 6L and 6R can be made to blink as well as light up in order to make the operator visually notice that there is notification information such as a warning. It is configured.

  Further, the left and right outer hands 6L and 6R can be blinked in conjunction with the above-described serious warning lamp 51L and the continuation possible warning lamp 51R, and the blinking color can be arbitrarily set.

  As shown in FIGS. 7 to 12, the intermediate display plate 3 includes an intermediate frame body 70, an intermediate main body portion 71, and a scale sheet 73, and attaches the scale sheet 73 to the surface of the intermediate main body portion 71. The main body 71 is housed in the intermediate frame 70. The scale sheet 73 forms an engine rotation speed scale 74 and constitutes an engine rotation speed meter 75 together with the inner pointer 8.

  The intermediate main body 71 is made of a resin and is formed in a substantially semicircular shape when viewed from the front, and the scale sheet 73 is translucent and is formed in substantially the same shape as the surface shape of the intermediate display panel 3. Specifically, the lower half 72 of the semicircle is shaped to be crushed by about 20% in the horizontal direction, and the scale sheet 73 is formed so as to be positioned in front of the display sheet 31 of the base display board 2 by a predetermined distance W1.

  The intermediate display board 3 has an intermediate main body portion 71 formed of a transparent member, a film-like scale sheet 73 that is substantially entirely white is attached to the surface thereof, and the engine rotational speed is colored black near the peripheral edge of the arc portion. The scales 74 are formed on the sheet 73 at a predetermined interval. By forming the scale sheet 73 with white and black contrast in this manner, the visibility of the engine rotation speed, which is important information for the operator when the tractor A is operated, is improved.

  Further, a shaft insertion hole 79 through which the pointer shaft 25 </ b> C of the inner pointer 8 passing through the scale sheet 73 and the intermediate main body 71 can be inserted is formed in the center portion of the intermediate display plate 3.

  Further, as shown in FIGS. 8 and 9, the intermediate frame 70 is formed in a substantially semicircular frame in front view so as to surround the peripheral end wall of the intermediate main body 71, and the left and right outer pointers 6L and 6R are movable. An intermediate rib wall 76 that is close to the surface of the base display panel 2 is formed over the entire circumference except the range. That is, the intermediate ridge wall 76 of the intermediate frame 70 cuts out the movable range of the left and right outer pointers 6L and 6R, and the height of the intermediate ridge wall 76 includes the scale sheet 73 and the display sheet 31 of the base display plate 2. Is substantially defined.

  As shown in FIGS. 10 and 11, the intermediate frame 70 is formed with a light transmitting hole 95 larger than the pointer shaft insertion hole 34 </ b> C formed in the base display material 32. Further, the LED light source 29 </ b> S mounted in the LED mounting recess 33 of the base display material 32 is positioned below the light transmitting hole 95. That is, the intermediate frame 70 is not present by the light transmitting hole 95 directly above the LED light source 29S, and the intermediate main body 71 is positioned. Therefore, the light emitted from the LED light source 29S is applied to the intermediate main body 71.

  Therefore, the light transmitted through and reflected in the intermediate main body 71 by the LED light source 29S mounted in the LED mounting recess 33 lights the scale sheet 73.

  In addition, the intermediate display board 3 of the display device 1 according to the present embodiment is configured to be lit regardless of day or night so that an operator can easily see the intermediate display board 3 at all times. At that time, a photodetector may be incorporated so that the illuminance of the light source is automatically adjusted according to the external light intensity.

  In addition, the LED light source 29S described above has a light source that emits red, green, or blue light mounted on the same portion of the mechanism unit 22 so that a plurality of colors can be emitted.

  Further, the intermediate display board 3 is configured not only to be lit but also to be blinked in order to visually notice the operator that there is notification information such as a warning.

  Furthermore, the intermediate display board 3 can be blinked in conjunction with the above-described critical warning lamp 51L and the continuation-possible warning lamp 51R, and the blinking color can be arbitrarily set.

  Further, the intermediate display board 3 is arranged with the lower part 72 of the intermediate display board 3 aligned at the center of the lower part of the base display board 2, and the upper part 77 is brought close to the inner wall 15 of the base frame 12 so that the base display board is viewed from the front. It is configured to fit inside the display panel 2.

  As shown in FIG. 10, the intermediate display plate 3 is fixed at the bottom of the intermediate protrusion wall 76 with a hook-like engagement portion 81 at the tip and two upper and lower columns 80, 80 facing the second flange 17. , And through the engagement holes 82 and 82 formed in the second flange 17, the engagement can be fixed. A similar hole is also formed in the base display plate 2 located in the engagement holes 82 and 82.

  As shown in FIGS. 7 to 12, the inner pointer 8 includes a pointer 24 </ b> C and a pointer shaft 25 </ b> C, and the pointer shaft end portion 26 </ b> C is rotatably fixed to the mechanism portion 22 via a rotation mechanism 27 </ b> C. Yes. Specifically, a pointer shaft 25C is provided in the vicinity of the left and right sides of a virtual central axis that is the center of the intermediate display plate 3, and the tip of the pointer 24C is exposed from the peripheral portion 7 of the front display plate 4 in a front view. It is configured as follows. That is, most of the inner pointer 8 is covered on the back side of the front display panel 4.

  Therefore, the exposed tip end of the pointer 24C points within the scale range of the engine rotational speed scale 74, and the inner needle 8 and the engine rotational speed scale 74 constitute the engine rotational speed meter 75.

  Further, if the LED light source 29C corresponding to the inner pointer 8 described above is caused to emit light, the entire light can be emitted to the tip of the inner pointer 8 while being transmitted and reflected through the pointer shaft 25C. The acrylic resin forming the inner pointer 8 can color the pointer 24C by coloring the transparent base material red or the like, or by forming the acrylic resin itself in red or the like.

  Note that the inner pointer 8 of the display device 1 according to the present embodiment is configured to be lit regardless of day or night so that the operator can easily see the inner pointer 8 at all times. At that time, a photodetector may be incorporated so that the illuminance of the light source is automatically adjusted according to the external light intensity.

  Further, the inner pointer 8 is configured not only to be lit but also to blink in order to visually notice the operator that there is notification information such as a warning.

  Further, the inner pointer 8 can be blinked in conjunction with the above-described serious warning lamp 51L and the continuation-possible warning lamp 51R, and the blinking color can be arbitrarily set.

  As shown in FIGS. 7 to 12, the front display plate 4 including the display unit 9 includes a liquid crystal display device 84 as the display device 10. That is, the front display panel 4 includes a front frame 83, a liquid crystal display device 84 having a backlight 85, and a black light shielding sheet 86, and the light shielding sheet 86 is attached to the peripheral edge of the liquid crystal display surface 87. In addition, the liquid crystal display device 84 is housed in the front frame 83. Further, the front display panel 4 can display the vehicle speed, the engine speed, various warning contents, etc. on the liquid crystal display device 84.

  Further, the front display board 4 is formed in a substantially semicircular shape when viewed from the front. Specifically, the lower part 88 of the semicircle is shaped to be crushed by about 10% in the horizontal direction, and the liquid crystal display surface 87 of the liquid crystal display device 84 is positioned in front of the scale sheet 73 of the intermediate display plate 3 by a predetermined distance W2. Is formed. Further, the light shielding sheet 86 covering the area other than the display area is formed so that the liquid crystal display surface 87 also has a substantially semicircular shape.

  Further, the front frame 83 is formed into a substantially semicircular frame in front view so as to surround the peripheral end wall of the liquid crystal display device 84, and the front frame close to the surface of the intermediate display plate 3 except for the movable range of the inner pointer 8. A protruding wall 89 is formed. That is, the front ridge wall 89 is formed in the lower portion 88 excluding most of the arc side of the front frame 83, and the height of the front ridge wall 89 is the scale sheet 73 of the liquid crystal display surface 87 and the intermediate display plate 3. Is substantially defined.

  Further, the front display panel 4 is arranged with the lower part 88 of the front display panel 4 aligned at the center of the lower part 72 of the intermediate display panel 3. That is, the front display board 4 is configured to be concentric with the intermediate display board 3 in front view inside the intermediate display board 3.

  As shown in FIG. 10, the intermediate display plate 3 is fixed at the bottom of the front projection wall 89 with a hook-like engagement portion 92 at the tip and two left and right columns 93, 93 facing the second flange 17. , And through the engagement holes 94, 94 formed in the second flange 17, the engagement can be fixed. A similar hole is also formed in the base display plate 2 located in the engagement holes 94.

  Further, the backlight 85 of the liquid crystal display device 84 is configured not only to be lit but also to be blinked in order to visually notice the operator that there is notification information such as a warning. .

  The backlight 85 can be blinked in conjunction with the warning lights 51L and 51R described above, and the color to be blinked can be arbitrarily set.

  In addition, the backlight 85 of the display device 1 according to the present embodiment is configured to be lit regardless of day or night so that the worker can easily see the display contents. At that time, a photodetector may be incorporated so that the illuminance of the backlight 85 is automatically adjusted according to the external light intensity.

  Here, a display example of the display contents displayed on the liquid crystal display surface 87 of the liquid crystal display device 84 will be described.

  The display contents mainly include a state display screen mode that should inform the worker operating the tractor A of the state of the tractor A, an operation message screen mode that prompts the operator to perform various operations, and the two critical warning lights 51L described above. A warning display screen mode for displaying the contents of the continuable warning light 51R and a DPF screen mode for prompting various operations related to the exhaust purification device DP and informing the state thereof are configured.

  In this description, three screen modes other than the DPF screen mode will be described.

  FIGS. 13A to 13C show basic screens in the state display screen mode. In the basic screen, the actual vehicle speed of the tractor A and the engine speed at that time are displayed adjacent to each other with relatively large numbers in the upper half. Above these numbers, the state of the reverser lever RL shown in FIG. 2 for controlling forward (F) reverse (R) and neutral (N) of the tractor A is displayed.

  In the lower half, various operations such as headland turning and rotary tilling work machines can be linked as A mode and B mode, and the maximum vehicle speed and maximum engine speed during various operations can be set. Information is displayed adjacent to the top and bottom.

  FIG. 14A displays maintenance information in the state display screen mode. For example, in the figure, the mission oil indicates that about 12 hours have passed since the previous mission oil change, and when the preset time approaches, characters and numbers are reversed to prompt the exchange.

  It should be noted that the vehicle speed, engine rotation speed, and reverser lever RL shown in the upper half are displayed as they are in principle in each screen mode. That is, the display content in the lower half of the liquid crystal display surface 87 is mainly the display content characteristic of each mode.

  FIG. 14B shows an operation message screen mode in which a message prompting the operator to wear the seat belt is displayed in the lower half. Further, it is possible to prompt the user to step on the clutch, to prompt the user to release the parking brake, and to display various messages related to the operation.

  FIG. 15A shows a warning display screen mode, in which a warning screen that warns of abnormal engine oil pressure is displayed in the lower half. FIG. 15B displays a warning screen that warns of overheating. Here, in order to notify the worker of the display contents with certainty, the displayed characters and the like are reversed or blinked.

  Thus, of the contents displayed in the warning display screen mode, when there is a serious problem to stop the work on the tractor A, the towing or other work machine, the red color by the above-mentioned critical warning lamp 51L is displayed. Displayed in conjunction with lighting and flashing to alert the operator.

  FIG. 16A also shows a warning display screen mode, and displays symbols and numbers (error codes) for notifying a display device abnormality in the lower half. Further, FIG. 16B displays a symbol for notifying that the lifter of the working machine to be pulled cannot be automatically raised. Here, in order to notify the worker of the display contents with certainty, the displayed characters and the like are reversed or blinked.

  Thus, of the contents displayed in the warning display screen mode, when there is a problem that the work can be continued on the tractor A or the work machine towing, etc., the yellow color by the above-described continuation enable warning lamp 51R is displayed. Displayed in conjunction with the lighting or flashing of, to alert the operator.

  As described above, the display device 1 of the work vehicle A according to the present embodiment is formed in a staircase pattern from the base display plate 2 to the intermediate display plate 3 and further to the front display plate 4 with predetermined intervals. 1 is three-dimensionally configured, and warning lights 51L and 51R and a number of display items 28 are arranged on the periphery thereof.

  In the display device 1 of the work vehicle A, the warning lights 51L and 51R having different importance levels are arranged on the left and right sides of the instruments, so that the importance level of the notification information can be grasped intuitively. Thus, it is possible to easily determine whether or not the worker should deal with it immediately.

  In addition, by arranging the warning importance level into two types, the serious warning lamp 51L and the continuable warning lamp 51R, it is easy to determine whether the work should be stopped immediately or whether the work can be continued continuously with caution. Judgment can be made.

  Further, the notification of the critical warning lamp 51L is performed in red, and the notification of the continuable warning lamp 51R is performed in yellow, so that the operator can instantly and intuitively understand the importance of the warning.

  In addition, by providing a machine-compatible indicator 90 for the machine on one of the left and right sides of the instrument and a work machine-compatible indicator 91 for the work machine on the other side, information to be notified to the operator is provided. It is possible to intuitively grasp which part is involved, and it is possible to easily determine the behavior and thought that the worker should deal with.

  In addition, by providing the matrix type display device 10, information to be notified to the worker can be displayed in various forms such as characters, figures, graphs, etc. that are easy to recognize, and is easy to understand for the operator during driving. It can be shown definitely.

  In addition, by forming the display 10 in the instruments disposed in the center of the display surface of the display device 1, the movement of the line of sight of the driving operator can be minimized, and the traveling direction can be changed during driving. It is possible to improve the safety by shortening the time not seen.

  In addition, by using the liquid crystal display device 84 as the display device 10, a display device with a large amount of information to be displayed and a high reliability can be introduced at low cost, which is advantageous in terms of cost for manufacturing the work vehicle A. .

  Furthermore, since the warning contents of the serious warning lamp 51L and the continuable warning lamp 51R can be displayed on the display device 10, the warning contents can be easily and easily shown to the operating operator.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

A Work vehicle (tractor)
DESCRIPTION OF SYMBOLS 1 Display apparatus 10 Display machine 28 Display item 29 Light source 51L Critical warning lamp 51R Continuation warning lamp 84 Liquid crystal display device 90 Machine-unit corresponding indicator part 91 Work machine-compatible indicator part

Claims (6)

A display device for a work vehicle that displays notification information to be notified to an operator during operation of the work vehicle,
Warning lights are arranged on the left and right sides of the instrument arranged at the center of the display surface.
One warning light is a serious warning light that alerts you to a serious warning prompting you to stop working.
The other warning light is a continuation warning light that gives a warning to the extent that work can be continued.
A display device for a work vehicle.   2. The work vehicle display according to claim 1, wherein the critical warning light is configured to be lit or blinking with a red light source, and the continuation possible warning light is configured to be lit or blinking with a yellow light source. apparatus.   An indicator part is provided on each of the right and left sides of the instrument provided at the center of the display surface, and one indicator part is composed of a plurality of display items related to the machine of the work vehicle, and each of the light sources can be turned on or blinked freely. The other indicator unit is composed of a plurality of display items relating to the work machine towed by the work vehicle, and the work unit corresponding indicator unit having a light source that can be turned on or blinked. The work vehicle display device according to claim 1, wherein the work vehicle display device is configured.   4. The work vehicle display device according to claim 1, wherein the meter disposed in a central portion of the display surface includes a matrix type display. 5.   The display device for a work vehicle according to claim 4, wherein the display device is configured by a liquid crystal display device.   The display device for a work vehicle according to claim 4 or 5, wherein the critical warning light and the continuation possible warning light are configured so that warning contents can be displayed on the display device at the time of notification.

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