JPH10244856A - Shift display device for transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To timely check a present shift step by a window display before performing a shift change. SOLUTION: A shift switch 22 for a shift change has a touch switch 30. When an operator lightly touches the shift switch 22, only the touch switch 30 is turned on while the shift switch 22 is left OFF. A HUD(head-up display) computer 40 usually controls a HUD unit 44 to display a car speed on a window and changes a window display to an actual shift step when the touch switch 30 is turned ON. The operator touches the shift switch to know the actual shift step with his line of sight kept in a front view during a series of shift change operations and can judge if he conducts the shift change in due course or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission shift display device, and more particularly, to a device for displaying a shift range and a shift speed as shift settings of a transmission on a front window.

[0002]

2. Description of the Related Art In an automatic transmission, P (parking), R (reverse), N (neutral), D, 3,
2. A shift range such as L (forward) is set. It is well known to display a shift range on an indicator on an instrument panel in a driver's seat in order to inform a driver which shift range is currently set.

[0003] In recent years, an automatic transmission capable of setting a so-called manual transmission mode has been proposed for the purpose of making driving easier and more comfortable. For example, in a vehicle traveling control device described in Japanese Patent Application Laid-Open No. 7-71577, a shift change switch is provided on a steering wheel. When the S mode as the manual shift mode is set, a shift change is performed according to the operation of the shift change switch, and the shift stage is fixed unless the switch is operated. Therefore, the shift speed is determined by the number of times the shift change switch is operated. In order to inform the driver of the shift stage being set, the device disclosed in the publication is provided with an indicator for displaying the shift stage on the instrument panel.

[0004] Also, Japanese Patent Application No. Hei 8-2546 filed by the present applicant.
In the automatic transmission control device of No. 80, a switch for changing the shift range is provided on the steering wheel.
With this device, the driver can change the shift range by operating a switch on the steering wheel. Then, the shift range set according to the switch operation is displayed on the indicator of the instrument panel.

As described above, conventionally, the setting of the shift range and the shift speed (the shift setting including both settings) is generally displayed on the indicator of the instrument panel. Therefore, the driver looks at the instrument panel to confirm the shift setting. At this time, the driver must turn his or her gaze downward from the front view through the front window.

On the other hand, Japanese Utility Model Laid-Open No. 2-5332 proposes a vehicle change position display device for displaying a shift range on a front window. The device displays the shift range on the front window for a predetermined time after the range change, in conjunction with a shift operation for changing the shift range. According to this device, the driver can check the shift setting while keeping his / her eyes on the forward field of view, so that driving becomes easy.

On the other hand, displaying characters and the like on the front window has conventionally been realized with the vehicle speed as a display target. For example, a translucent head-up display is set at an appropriate position on the front window. And
A display device capable of projecting various characters and symbols on the head-up display is provided on the dashboard. With this display device, "@k
The current vehicle speed is displayed as “m / h”.

[0008]

SUMMARY OF THE INVENTION
In the device described in Japanese Patent Publication No. 32, the shift range is not displayed in the window until a shift operation for changing the shift range is performed. Therefore, the driver can know the shift range in the window display only after performing the gear shifting operation. However, the driver does not always know the shift setting, but rather needs to confirm the current shift setting before the gear shifting operation. In such a case, in the above-described conventional apparatus, it is necessary to know the shift setting before the gear shifting operation by looking at the indicator on the instrument panel, and in many cases, the advantage of the window display cannot be utilized. Or, as a result of not knowing the current shift range and neglecting to check the range before shifting while looking at the front view, an unexpected shift range may be displayed in the window with the shifting operation. There was sex.

In order to make it possible to confirm the shift setting before the shift operation on the window display, it is conceivable that the shift setting at each time point is always displayed on the window. However, it is mainly necessary to confirm the shift setting before and after the gear shifting operation. Opportunities for changing the shift setting are concentrated on a curved portion, a sloping road, and the like, and are not so many. In a normal driving situation that occupies most of the running time, it is often unnecessary to display the shift setting. Therefore, displaying the shift setting continuously even when the shift operation is not performed may rather make the driver feel troublesome.

[0010] Further, in the case where both the shift setting and the above-mentioned vehicle speed are to be displayed in a window, there are problems similar to those described above in terms of an increase in the size of the projection device and inconvenience.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus capable of displaying a current shift stage and shift range in a window with good timing before a shift operation is performed. It is in.

[0012]

According to a transmission shift display device of the present invention, a shift operation of a shift operation means for changing a shift setting is executed in a device for displaying a shift setting of a transmission of a vehicle on a front window. A state immediately before the shift setting is detected, and when this state is detected, the current shift setting is displayed on a window prior to the shift setting change.

According to the present invention, the driver can check the current shift setting by looking at the window display immediately before executing the shift operation. If the shift operation to be executed is appropriate, the shift operation is executed as it is. If the shifting operation is not appropriate or you should perform a different shifting operation,
Appropriately deal with the situation. Since the shift setting before the shift operation can be confirmed while keeping the line of sight to the front view, driving becomes easy. Further, since the shift setting is not always displayed in a window, it is not bothersome.

Further, the transmission shift display device of the present invention comprises:
In a device for displaying a shift setting of a transmission of a vehicle on a front window, a means provided on a shift operation means for a transmission for detecting a light contact with the shift operation means to such an extent that a shift operation is not executed; Display control means for displaying the current shift setting in a window upon detection.

The shift operation means is, for example, a switch or a lever provided at a place where the driver can easily operate, such as a steering wheel. Further, for example, the shift operation means is a floor-type or column-type shift lever. The present invention can be applied to a display device for an automatic transmission and a display device for a manual transmission.

When performing a shift operation, the driver first makes light contact with the shift operation means to such an extent that the shift operation is not executed. This means, for example, putting a finger on a switch as a shift operation means, and, for example, putting a finger on a lever. Also, for example, gripping or pushing the lever with such a force that the shift lever does not move. When a light contact is detected, the shift setting is displayed in a window. The driver can see the shift stage displayed in the window at the point of light contact with the shift operation means in a series of shift operations, and can judge whether or not to execute the shift operation as it is. . In addition, the current shift setting can be confirmed using the window display by a simple operation of lightly touching the shift operation means as appropriate.

In one embodiment of the present invention, the vehicle speed and the shift setting may be switched to be displayed in a window. For example, at normal times, the vehicle speed is displayed, and immediately before the shift operation,
When light contact with the speed change operation means is detected, the display is switched to the shift setting display. More preferably, the shift setting is displayed until a predetermined time elapses after the shift operation is performed, and then the vehicle speed is displayed again. According to such an aspect, both the vehicle speed and the shift setting can be displayed in the window while avoiding an increase in the size of the display device. Usually, the vehicle speed is displayed in response to the fact that the vehicle speed is useful information, and the shift setting is displayed before and after the shift operation.
Therefore, suitable information can be displayed on the window at each time and provided to the driver, and driving becomes easy.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration, in which the display device of the present embodiment is shown together with a vehicle drive system.

As shown in FIG. 1, an engine 10 and an automatic transmission 12 are connected, and the automatic transmission 12 is connected to wheels via a rotating shaft and a differential gear device (not shown). The automatic transmission 12 includes an automatic transmission control device (hereinafter, referred to as an automatic transmission control device).
T-ECU) 14 is connected. Then, the shift lever device 16 is connected to the automatic transmission 1 via a rod or the like.
2 and is electrically connected to the T-ECU 14. In the present embodiment, the automatic transmission 1
2 is a forward four-speed type and a reverse one-speed type. Then, by operating the shift lever device 16, P
(Parking), R (reverse), N (neutral), D, 3, 2, L
Each shift range of (forward) is set. For example, when the D range is set, the T-ECU 14 determines a shift stage between the first to fourth speeds according to a predetermined shift map based on input information such as a vehicle speed and an accelerator opening. Then, the T-ECU 14 controls the automatic transmission 12 to perform a shift change to the determined shift stage. TE
The CU 14 is connected to an instrument panel indicator 18 provided on the instrument panel, and the shift range being set is displayed on the instrument panel indicator 18.

Further, a manual mode set switch 20 is connected to the T-ECU 14. The manual mode set switch 20 is provided in an easily accessible place near the shift lever device 16 in the vehicle interior.
When the switch is turned on, the T-ECU 14 sets the manual shift mode. When the switch is turned off, the T-ECU 14 cancels the manual operation mode. When the manual shift mode is set, the shift switch 22 connected to the T-ECU 14 is activated.

FIG. 2 shows the steering in the passenger compartment and its surroundings. The shift switch 22 includes a shift-up switch 22a and a shift-down switch 22b.
The shift-up switches 22a are provided at two positions on the front surface of the steering wheel 24. Shift down switch 2
2b is provided on the back side of the steering wheel 24 at a position facing the upshift switch 22a.
Each time the shift-up switch 22a is depressed once, the T-ECU 14 detects this and the automatic transmission 12
Is shifted up by one step to the high speed side. Similarly, each time the downshift switch 22b is depressed once, the shift stage is lowered by one stage to the lower speed side. Unless the shift switch 22 is operated, the shift change is not performed in principle, and the shift stage is fixed. It should be noted that the final decision as to whether or not to make a shift change in response to a switch operation is determined by the T-ECU.
14 performs. For example, in a situation where the engine speed becomes too high due to the downshift, the T-ECU 14 does not execute the downshift even if the downshift switch 22b is pressed down. When the manual shift mode is set, the instrument panel indicator 18 indicates that the mode is being set, and further displays the currently set shift stage.

FIG. 3 shows a cross section of the shift switch 22. The upshift switch 22a and the downshift switch 22b have the same configuration. A recess 24a is provided at a position where the shift switch of the steering wheel 24 is installed. The shift switch 22 has a shift contact portion 26 provided at the bottom of the concave portion 24a, and a resin switch knob 28 attached to the shift contact portion 26. The switch knob 28 is biased upward in FIG. 3 by a certain force. The driver depresses the switch knob 28 against this force, and the shift contact 26 closes when the switch knob 28 moves a predetermined stroke. When the shift contact portion 26 is closed, the T-ECU 14 detects a pressing operation of the shift switch 22. When the driver releases his hand, the switch knob 28 returns to its original position, and the shift contact 26 opens.

As a feature of the present invention, a touch switch 30 is provided on the switch knob 28 and on the steering surface side. The touch switch 30 is a switch knob 2
8 is a thin soft switch cover 32 covering the surface
And a touch contact portion 34 provided below the switch cover 32. Even when the driver touches or slightly presses the switch knob 28 with a light force that does not close the shift contact portion 26, the touch contact portion 34 closes. That is,
As shown in FIG. 4, when the pressing force on the switch knob 28 is small, only the touch contact portion 34 is closed. When the pressing force is large, both the touch contact portion 34 and the shift contact portion 26 are closed. The touch contact portion 34 includes
It is possible to use a pressure-sensitive sensor or a capacitance sensor that senses minute pressure. The touch switch 30 is provided on both the upshift switch 22a and the downshift switch 22b.

Returning to FIG. 1, the configuration of the window display device of the present embodiment will be described. The T-ECU 14 is connected to a head-up display computer (hereinafter, referred to as a HUD computer) 40. T-ECU14
Thus, the HUD computer 40 is sent a signal indicating whether or not the manual shift mode is being set, and a signal indicating the currently set shift stage at each time during the setting of the manual shift mode. The HUD computer 40 is connected to the shift switch 22 and the touch switch 30, and can detect opening and closing of the contact portions of both switches. Further, a vehicle speed sensor 42 is connected to the HUD computer 40. The vehicle speed sensor 42 is a sensor that detects the number of revolutions of the axle or the like, and the output of the vehicle speed sensor 42 indicates the current vehicle speed.

The HUD computer 40 is connected to a head-up display device (hereinafter, referred to as a HUD device) 44 as an output device. The HUD device 44
As shown in FIG. 2, it has a HUD screen 46 provided on the front window and a projector (not shown) provided on the dashboard. HUD screen 46
Is formed by applying a paint for increasing the reflectance of the window to the window and performing a baking process. As is well known, the HUD device 44 can project various characters and symbols on a HUD screen 46 and present it to the driver. The display data is transmitted from the HUD computer 40 to the HUD device 44, and displays characters and symbols having predetermined contents according to the display data.

In this embodiment, as described above, H
The paint is baked on the UD screen 46. On the other hand, the HUD screen 46 may have a configuration other than the above configuration as long as the driver can easily determine characters and the like. For example, a partial area of the window glass may be set as the HUD screen 46 without any particular processing.

In this embodiment, the HUD device 44 switches and displays the vehicle speed and the shift speed. HUD Computer 4
0 determines the display content to be either the vehicle speed or the shift speed according to the operation state of the shift switch 22 or the touch switch 30. Then, the characters and symbols to be displayed are set in the HUD device 4.
Send to 4. In the example of FIG. 2, “SH” is used as the current shift stage.
"IFT 4" is displayed. In the present embodiment, the vehicle speed and the shift speed are displayed at different places on the instrument panel.

The operation of the display device described above will be described. FIG. 5 shows a main flow of a process executed by the HUD computer 40. The process starts when an ignition switch (not shown) is turned on, and a shift display flag and a shift display holding flag, which will be described later, are cleared as initial settings (S10). Then, it is determined whether or not the ignition switch is ON (S12) and OFF.
If so, the process ends (S14). This is the case where the driver has finished driving.

If the ignition switch is ON,
It is determined whether the manual mode set switch 20 has already been turned ON and the manual shift mode has been set (S16). The setting status of the manual shift mode is transmitted from the T-ECU 14 to the HUD computer 40.
Has been sent to If the manual shift mode is not set, the vehicle speed is displayed (S18), and step S1 is performed.
Return to 2. That is, the current vehicle speed is obtained based on the output of the vehicle speed sensor 42, and the current vehicle speed is used as display data as the HUD device 4.
Send to 4. In response, the HUD device 44 displays “$ km
/ H "is displayed. As described above, when the manual shift mode is not set, the current vehicle speed is always HUD.
Displayed on screen 46.

If the manual mode is set in step S16, it is determined whether or not a shift display flag described later is ON (S20). If the shift display flag is OFF, the vehicle speed display process is performed in step S18 as described above. Go and step S
Return to 12. On the other hand, if the shift display flag is ON,
A shift display process (S22) is performed, and the process returns to step S12. At this time, the current shift stage sent from the T-ECU 14 is sent to the HUD device 44 as display data. In response, the HUD device 44 displays "SHIFT @". In this manner, in the main flow, switching between the vehicle speed display and the shift position display is performed according to the state of the shift display flag during the setting of the manual shift mode. The state of the shift display flag is changed in the following interrupt processes 1 to 4. When the interrupt processing ends, the process returns to the main flow.

"Interrupt processing 1": O of touch switch 30
Occurs when FF → ON (FIG. 6) In response to the interrupt, the shift display flag is set to ON (S30), and the interrupt process 1 ends.

"Interrupt processing 2": O of touch switch 30
Occurs when N → OFF (FIG. 7) It is determined whether or not a later-described shift display holding flag is ON (S40), and if it is ON, interrupt processing 2 is terminated as it is. If the shift display holding flag is OFF, the shift display flag is cleared (S42), and the process ends.

"Interrupt processing 3": O of shift switch 22
Occurs when FF → ON (FIG. 8) The shift display flag is set (S50), the shift display hold flag is set (S52), the display timer is set (S54), and the interrupt processing 3 ends. . When the interrupt processing 3 occurs, the interrupt processing 1 occurs before that, and the shift display flag is normally in the ON state. Therefore, the above step S50 may be omitted. The display timer is built in the HUD computer 40, and the timer time until time over is set to about several seconds. In step S54, measurement of the timer time is started.

"Interruption process 4": Occurs when the display timer times out (FIG. 9). The shift display holding flag is cleared (S60). Then, it is determined whether or not the touch switch 30 is in the ON state (S62), and if it is ON, the interrupt processing 4 is terminated as it is. If the touch switch 30 is OFF, the shift display flag is cleared (S64), and the process ends.

Next, the operation of the display device realized by the above processing will be described using a specific example.

(1) The ignition switch is ON, the normal running state: no interrupt processing is generated, and the shift display flag is OFF. Therefore, the HUD device 44 displays the current vehicle speed at each time point.

(2) When the manual shift mode is set and the driver touches the shift switch 22 lightly (interruption processing 1) and releases it (interruption processing 2): the shift switch 22 is not turned on. Only the touch switch 30 is turned on. At this time, the interruption process 1 occurs with the ON of the touch switch 30, and the shift display flag is set. As a result, the HUD device 44 displays the current shift stage. Interrupt processing 2 occurs when the driver releases his / her finger from the touch switch 30. At this time, since the shift display holding flag is OFF, the shift display flag is cleared (S42). Therefore, when the touch switch 30 is turned off, the display returns to the vehicle speed display on the main flow.

(3) The manual shift mode is set, and the driver presses the shift switch 22 lightly to turn on the touch switch 30 (interrupt processing 1), and further depresses the shift switch 22 to turn it on (interrupt processing). 3) When the finger is released from the shift switch 22 (interrupt processing 2 → interrupt processing 4): First, the interrupt processing 1 is generated as described above with the ON of the touch switch 30, and the shift display flag is set. Set. Further, an interruption process 3 occurs with the turning on of the shift switch 22, the shift display holding flag is set, and the display timer is set. At this time, T-
The ECU 14 performs a shift change (up or down). With the shift change, the shift stage sent from the T-ECU 14 to the HUD computer 40 is changed, and the shift stage displayed on the HUD device 44 is also changed.

When the driver removes his / her finger from the switch, an interruption process 2 occurs with the turning off of the touch switch. However, at this time, since the shift display holding flag is ON, the interrupt processing 2 ends as it is. When returning to the main flow, the shift display flag remains ON.
Therefore, even if the driver removes his / her finger from the shift switch 22, the shift stage display is continued.

After the end of the interrupt process 2, when the display timer times out, an interrupt process 4 occurs, and the shift display holding flag is cleared. Since the driver has already released his finger from the shift switch 22 (step S6 in FIG. 9).
2 is NO), the shift display flag is cleared. Therefore, when the display timer times out, the display is switched again to the vehicle speed display on the main flow.

The above is the operation in the case of (3). However, as described above, whether or not to perform a shift change in response to the ON operation of the shift switch 22 is determined by the T-ECU 14.
Is finally determined based on other input information. When the shift change is not performed, the HUD computer 40
Are not changed. At this time, T
-The ECU 14 sends a signal to the HUD computer 40 indicating that the shift change has not been performed. The HUD computer 40 controls the HUD device 44 to blink the current shift stage until the display timer times out. Along with this blinking display, a notification sound may be emitted from a speaker (not shown).

(4) In the above (3), when the driver turns on the shift switch 22 and then keeps the ON state of the touch switch 30 without releasing the finger from the switch (interrupt processing 1 → 3). → 4 → 3 or 2): At this time, the operation after the display timer times out is different. In step S62 of FIG. 9, the touch switch 30 is ON, and the shift display flag is not cleared. Therefore, interrupt processing 4
Even after returning to the main flow, the shift stage display is continued.

From this state, the driver operates the shift switch 22.
Is pressed, the shift change is executed, interrupt processing 3 is generated, the shift display flag is set again, and the display timer is set. On the other hand, when the driver removes his / her finger from the switch, interrupt processing 2 occurs. At this time, the shift display flag is cleared because the shift display holding flag is OFF. Therefore, the return to the vehicle speed display is performed in the main flow.

Next, an operation procedure for suitably using the above-described display device will be described. The driver first touches the shift switch 22 lightly immediately before the shift change. Upshift switch 2 if you intend to upshift
When the shift down is to be performed, the shift down switch 22b is touched at 2a. At this point, the HUD device 4
4, the currently set shift stage is displayed. The driver
After checking the shift position displayed in the window and determining that there is no need for a shift change, the shift switch 2
Release your finger from 2. As a result, the window display returns to the vehicle speed. It should be noted that if the driver does not intend to make a shift change but simply wants to check the current shift stage, the driver may perform the same operation.

As a result of checking the current shift stage, if it is determined that the shift change can be performed as it is, the lightly touched shift switch 22 is depressed. In response, the T-ECU 14 executes a shift change, and the display of the shift stage is changed on the window. When the driver releases his / her finger from the shift switch 22, the display returns to the vehicle speed display when the display timer expires. If the driver keeps the light contact state with the shift switch 22, the shift stage display is continued even after the time is over, and the driver can make a determination about the next shift change.

When the driver depresses the shift switch 22 but the T-ECU 14 does not change the gear, the number of gears in the shift gear display does not change, but the display blinks. The driver sees the blinking display and knows that the shift change could not be performed.

Next, a display example of the HUD device 44 during the setting of the manual shift mode will be described with reference to FIG. In FIG. 10A, the current vehicle speed is 100 km / h. (B) of the figure shows that the driver feels the need to shift down and decelerate, and the downshift switch 22b
This is a display when a finger is put on. Since the touch switch 30 is turned on, the current shift stage “SHIFT 4”
Is displayed. The driver determines that the shift change may be performed, and pushes down the downshift switch 22b. When the downshift is executed in response to this, the shift stage display is changed to “SHIFT 3” (FIG. 10).
(C)). Even if the driver releases his / her finger from the downshift switch 22b, the shift stage display continues for a certain period of time until the display timer times out (FIG. 10D). Thereafter, when the time is over, the display returns to the vehicle speed display (FIG. 10).
(E)). As a result of deceleration until time over, “80 km / h” is displayed at the time of return.

The preferred embodiment of the present invention has been described above. According to the present embodiment, the vehicle speed is normally displayed in the window. If the driver touches the shift switch lightly without suddenly pressing it, the current shift stage is displayed. Therefore, the driver can check the shift stage before the change and the shift stage after the change without a troublesome operation in a series of shift change operations. Further, the driver can arbitrarily confirm the current shift stage as necessary by performing a simple operation related to the shift change by touching the shift switch.

In the present embodiment, the current shift stage is displayed in the window as the shift stage display. In addition to this shift stage, whether the user is touching the shift-up switch 22a or the shift-down switch 22b may be indicated by characters such as "UP" and "DOWN". With this display, the driver can know in advance the result of the upcoming shift change, without always knowing which switch on the front and rear surfaces of the steering is for upshifting and which is for downshifting.

Further, in the present embodiment, the present invention is applied to a vehicle in which the manual setting mode can be set, and the shift switch of the steering functions for shifting. On the other hand, when the shift switch is operated, the TE
The present invention can be similarly applied to a vehicle in which the CU 14 changes the shift range. In this case, the shift range may be displayed in the window instead of the shift stage.

In this embodiment, as shown in FIG. 3, a touch switch is provided as a push-down switch as a shift operation means. On the other hand, the present invention can be realized by providing touch switches for other types of speed change operation means. For example, a touch switch is provided on a grip of a shift lever of a conventional automatic transmission. In this case, the current shift range is displayed in a window when the driver depresses the shift lever. When the shift lever is moved, the changed shift range is displayed.

The present invention is also applicable to vehicles equipped with a manual transmission. Also in this case, for example, a touch switch may be provided on the grip of the shift lever. When the shift lever is depressed, the current shift stage is displayed in a window.

In the above embodiment, the present invention is applied to an engine-equipped vehicle. However, it is needless to say that the present invention can be applied to an electric vehicle or a hybrid vehicle.

[0054]

According to the present invention, the driver can view the shift setting window-displayed at the point of light contact with the shift operation means in a series of shift operations. Therefore, when performing the gear shifting operation, the driver can check the current shift setting at a suitable timing immediately before the gear shifting operation while keeping the line of sight to the front view. Further, since the shift setting is not always displayed in a window, it is not bothersome. Therefore, by applying the present invention, it becomes easy to grasp the state of the transmission during operation and to operate it appropriately.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an overall configuration of an embodiment.

FIG. 2 is a diagram showing a steering in a vehicle compartment and its periphery.

FIG. 3 is a sectional view of a shift switch and a touch switch.

FIG. 4 is a diagram illustrating opening and closing operations of a shift switch and a touch switch.

FIG. 5 is a flowchart illustrating a main flow of an operation of the display device of the embodiment.

FIG. 6 is a flowchart illustrating interrupt processing 1 that occurs when a touch switch is turned on.

FIG. 7 is a flowchart showing interrupt processing 2 that occurs when the touch switch is turned off.

FIG. 8 is a flowchart showing an interrupt process 3 that occurs when a shift switch is turned on.

FIG. 9 is a flowchart showing interrupt processing 4 that occurs when the display timer times out.

FIG. 10 is a diagram showing a specific example of window display.

[Explanation of symbols]

12 automatic transmission, 14 automatic transmission control device (T-E
CU), 16 shift lever device, 20 manual mode set switch, 22 shift switch, 24
Steering, 30 touch switches, 40 head-up display (HUD) computer, 42 vehicle speed sensor, 44 head-up display (HUD) device.

Claims (2)

[Claims] 1. A transmission shift display device for displaying a shift setting of a transmission of a vehicle on a front window, wherein a state immediately before a shift operation is performed on a shift operation means for changing a shift setting is detected. A transmission shift display device for displaying a current shift setting in a window before changing a shift setting when a state immediately before is detected. 2. A transmission shift display device for displaying a shift setting of a transmission of a vehicle on a front window, wherein the shift operation means for the transmission is provided with a light contact with the shift operation means such that a shift operation is not executed. A transmission shift display device comprising: a detection unit; and a display control unit that displays a current shift setting in a window when the light contact is detected.