JP2014201213A - On-vehicle display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle display device in which one display can be used both for an instrument panel display and for a HUD, and which can increase an information amount of the instrument panel display while suppressing cost increase.SOLUTION: When a liquid crystal display 10 is moved so that a whole display area 10a is located in a first space 51, information for an instrument panel display is displayed on the whole display area 10a. On the other hand, when the liquid crystal display 10 is moved to a position where the display area 10a strides over the first space 51 and a second space 52, the information for the instrument panel display is displayed on a first display area 10a, and the information for an HUD is displayed on a second display area 10a. Thereby, the information amount of the instrument panel display can be increased by displaying the information on the whole display area 10a according to situations, without using a large screen type display.

Description

  The present invention relates to a vehicle-mounted display device, and is particularly suitable for use in a vehicle-mounted display device including a display in an instrument panel and a head-up display.

  Conventionally, there is a vehicle in which an instrument panel (hereinafter referred to as an instrument panel) assembled on a dashboard is configured by a liquid crystal display device. In-vehicle display (hereinafter referred to as instrument panel display) provided in the instrument panel includes, for example, information indicating the shift position in addition to meter information necessary for vehicle travel such as travel speed, engine rotation speed, and remaining amount of fuel, A warning light that is turned on when an important device fails is displayed. There is also an instrument panel display configured to display travel guidance information by the navigation device.

  In recent years, a head-up display (HUD) for minimizing the movement of the driver's line of sight and displaying necessary information during driving is becoming more popular. The head-up display projects an image on the windshield of the vehicle. The driver can see various information displayed as images on the windshield by moving his / her line of sight slightly from the real world in front of him looking through the windshield while driving. A translucent screen called "combiner" is installed on the front glass side of the vehicle, and the display information is reflected on this combiner to enter the driver's view.

  In addition, a mirror unit that projects a display image arbitrarily specified from a normal display in the forward field of view, and a drive unit that switches and drives the mirror unit according to the vehicle speed, the display from the display source at high speed A display device configured to switch to a normal display at a low speed as a head-up display has also been proposed (see, for example, Patent Document 1).

  There has also been proposed a technique that includes both an instrument panel display and a HUD, and controls display information for both displays. With respect to this type of display device, the liquid crystal display is divided into two display areas, one display area is used for the instrument panel display, and the other display area is used for the HUD, thereby displaying the instrument panel display and displaying the HUD. Have also been proposed (see, for example, Patent Documents 2 and 3).

JP 60-88315 A JP-A-10-133571 JP 2006-103589 A

  However, in the technologies described in Patent Documents 2 and 3, since the liquid crystal display is always partitioned into two display areas for the instrument panel display and the display area for HUD, it is possible to display on the instrument panel display. There was a problem that the amount of information was reduced. If a liquid crystal display of a larger screen type than usual is used, the amount of information displayed on the instrument panel display can be increased, but there is a problem that it leads to an increase in cost and power.

  The present invention has been made to solve such problems. One display can be used for both an instrument panel display and an HUD, and as much information as possible on the instrument panel display while suppressing an increase in cost and power. An object of the present invention is to provide an in-vehicle display device capable of displaying the image.

  In order to solve the above-described problems, the present invention includes a moving unit that moves the display and a display control unit that controls display of information on the display. When the display is moved so that the entire display area is positioned in the first instrument panel display space, the display control means displays information for the instrument panel display over the entire display area. When the display is moved to a position where the display area spans both the first space for the instrument panel display and the second space for the head-up display, the display control means sets the display area to the first area. The display area is divided into a second display area, information for the instrument panel display is displayed in the first display area, and information for the head-up display is displayed in the second display area. I have to.

  According to the present invention configured as described above, by moving the display according to the situation, information for the instrument panel display is displayed on the entire display area of the display, or the information for the instrument panel display and the head-up are displayed. The information for display can be divided into a first display area and a second display area for display. This enables the instrument panel display to display information on the entire display area of the display according to the situation while using one display for both the instrument panel display and the HUD without using a large screen type display. The amount of information can be increased. Therefore, as much information as possible can be displayed on the instrument panel display while avoiding an increase in cost and power due to the use of a large screen type display.

It is a figure which shows the structural example of the vehicle-mounted display apparatus by this embodiment. It is a figure which shows the function structural example of the microcomputer with which the vehicle-mounted display apparatus of this embodiment is provided. It is a figure which shows the two states to which the liquid crystal display of this embodiment moved. It is a figure which shows the instrument panel display by this embodiment, and the display image of HUD.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of the in-vehicle display device according to the present embodiment. FIG. 2 is a diagram illustrating a functional configuration example of a microcomputer included in the in-vehicle display device according to the present embodiment.

  As shown in FIG. 1, the in-vehicle display device of this embodiment includes a liquid crystal display 10 (corresponding to a display of the present invention), a microcomputer 20, a reflection mirror 30, a combiner 40 that is a transparent screen, and a housing 100. A partition 101 is provided. As shown in FIG. 2, the microcomputer 20 of the present embodiment includes a vehicle speed detection unit 21, a movement control unit 22, a rotation control unit 23, and a display control unit 24 as its functional configuration. The in-vehicle display device of the present embodiment uses one liquid crystal display 10 for both the instrument panel display and the HUD.

  As shown in FIG. 1, the partition 101 partitions the internal space of the housing 100 into two upper and lower spaces. The first space 51 created below the partition 101 is a space formed so that the display information of the liquid crystal display 10 is put into the driver's field of view as information on the instrument panel display. The second space 52 created on the upper side of the partition 101 is a space formed so that the display information of the liquid crystal display 10 is put into the driver's field of view as HUD information. The reflection mirror 30 and the combiner 40 are provided in the second space 52.

  The movement control unit 22 shown in FIG. 2 moves the liquid crystal display 10 in the vertical direction by controlling driving of a moving mechanism (not shown). Here, the movement axis MA of the liquid crystal display 10 is set obliquely. Therefore, as the liquid crystal display 10 moves from the first space 51 to the second space 52 (from the lower side to the upper side), the liquid crystal display 10 moves obliquely in a direction away from the reflection mirror 30. The movement control unit 22 and a moving mechanism (not shown) constitute the moving means of the present invention.

  FIG. 3 is a diagram illustrating two states in which the liquid crystal display 10 has moved. FIG. 3A shows a state in which the liquid crystal display 10 has moved to the lowest side and stopped. In this state, the entire display area 10 a of the liquid crystal display 10 is located in the first space 51. Thereby, the display image of the display area 10a is put in the driver's field of view as information on the instrument panel display.

On the other hand, FIG. 3B shows a state where the liquid crystal display 10 has moved to the uppermost position and stopped. In this state, the display area 10 a of the liquid crystal display 10 is positioned so as to straddle both the first space 51 and the second space 52. Of the display area 10a, a portion facing the first space 51 is a first display area 10a ₁ , and a portion facing the second space 52 is a second display area 10a ₂ .

  The rotation control unit 23 shown in FIG. 2 rotates the combiner 40 by controlling the driving of a rotation mechanism (not shown). Specifically, when the liquid crystal display 10 is moved to the position shown in FIG. 3A, the rotation control unit 23 rotates the combiner 40 to the standby angle shown in FIG. In the present embodiment, the standby angle is an angle of 0 degrees with respect to the upper surface of the housing 100.

  On the other hand, when the liquid crystal display 10 is moved to the position shown in FIG. 3B, the rotation control unit 23 rotates the combiner 40 to the reflection angle shown in FIG. The reflection angle is an angle for further reflecting the display image of the liquid crystal display 10 reflected by the reflection mirror 30, and its size is determined in advance. The turning means of the present invention is configured by the turning control unit 23 and a turning mechanism (not shown).

When the liquid crystal display 10 is moved to the position shown in FIG. 3 (b), the reflection mirror 30 reflects the display image to the second display area 10a _{and second} liquid crystal display 10. Further, the combiner 40 rotated to the reflection angle further reflects the display image reflected by the reflection mirror 30. Thus, the display image of the second display area 10a ₂ is adapted to be placed in the driver's field of view as the HUD information through the second space 52. At the same time, the display image of the first display area 10a ₁ is adapted to be placed in view of the driver as the information of the instrument panel display through the first space 51.

FIG. 4 is a diagram showing a display image of the instrument panel display and the HUD. FIG. 4A shows a state in which the liquid crystal display 10 is moved to the position shown in FIG. 3A and the entire display image of the display area 10a is displayed as information on the instrument panel display 41. FIG. 4B, the liquid crystal display 10 is moved to the position shown in FIG. 3B, and the display image of the _first display area 10a1 is displayed as information on the instrument panel display 41, and the second display The display image of the area 10a ₂ is displayed as information on the HUD 42.

The display control unit 24 corresponds to the display control means of the present invention, and controls the display of information on the liquid crystal display 10. Specifically, when the liquid crystal display 10 is moved to the position shown in FIG. 3A, the display control unit 24 displays information for the instrument panel display on the entire display area 10a. On the other hand, the display control unit 24, when the liquid crystal display 10 is moved to the position shown in FIG. 3 (b), to divide the display area 10a on the first display area 10a ₁ and the ₂ second display area 10a , together with the display information for the instrument panel display for the first display area 10a _1, it displays the information for the HUD to the second display area 10a _2.

It should be noted that what information is displayed on the entire display area 10a when the liquid crystal display 10 is moved to the position shown in FIG. 3A can be arbitrarily set. As for the one liquid crystal display 10 to display whatever information respectively to the first display area 10a ₁ and second display areas 10a ₂ when moved to the position shown in FIG. 3 (b), optionally It is possible to set.

  The vehicle speed detection unit 21 shown in FIG. 2 corresponds to the vehicle speed detection means of the present invention. For example, the vehicle speed detection unit 21 determines the vehicle speed based on vehicle speed pulses input via an in-vehicle network (not shown) such as an in-vehicle LAN. To detect. When the vehicle speed detection unit 21 detects that the vehicle speed is lower than the predetermined speed, the movement control unit 22 moves the liquid crystal display 10 to the position shown in FIG. Moreover, the rotation control part 23 rotates the combiner 40 to the standby angle shown to Fig.3 (a). Furthermore, the display control unit 24 displays information for instrument panel display over the entire display area 10a. As a result, information is displayed only on the instrument panel display 41 as shown in FIG.

On the other hand, when the vehicle speed detection unit 21 detects that the vehicle speed is equal to or higher than the predetermined speed, the movement control unit 22 moves the liquid crystal display 10 to the position shown in FIG. Moreover, the rotation control part 23 rotates the combiner 40 to the angle for reflection shown in FIG.3 (b). Further, the display control unit 24, along with display information for the instrument panel display for the first display area 10a _1, displays the information for the HUD to the second display area 10a _2. As a result, information is displayed on both the instrument panel display 41 and the HUD 42 as shown in FIG. In this way, when the vehicle speed is higher than a predetermined speed, information that the driver often sees is displayed on the HUD 42 so as to keep the driver's line of sight away from the windshield as much as possible. Can do.

As described above in detail, according to the in-vehicle display device of the present embodiment, by moving the liquid crystal display 10 according to the vehicle speed, information for the instrument panel display can be displayed on the entire display area 10a. it can be the information and information for HUD for the instrument panel display by dividing the first display area 10a ₁ and in the ₂ second display area 10a or to display.

  As a result, even when a large screen type display is not used, one liquid crystal display 10 is used for both the instrument panel display and the HUD, and when traveling at a low speed, the entire display area 10a of the liquid crystal display 10 is used. By displaying information, the amount of information on the instrument panel display can be increased.

  Therefore, as much information as possible can be displayed on the instrument panel display 41 while avoiding an increase in cost and power due to the use of a large screen type display. When driving at a low speed, the driver has more room to move the line of sight and look at the instrument panel display 41 than when driving at a high speed. Therefore, the driver needs to drive the vehicle, such as the driving speed, engine speed, and remaining fuel. In addition to accurate meter information, it is possible to make various judgments by looking at a lot of information such as travel guidance information by the navigation device.

Further, in the above embodiment, the movement axis MA of the liquid crystal display 10 is set obliquely, and the liquid crystal display 10 is moved obliquely. Thus, the distance between the _second display area 10a2 of the liquid crystal display 10 and the reflection mirror 30 can be made as long as possible, and the display image of the HUD 42 can be made as far as possible by increasing the virtual image distance. Thereby, the driver | operator's eyes | visual_axis which sees the semi-transparent combiner 40 at the time of high-speed driving | running | working can face as far away as possible.

  Moreover, in the said embodiment, the combiner 40 is comprised so that rotation is possible, and when the liquid crystal display 10 is used as HUD42, the combiner 40 is opened, and when the liquid crystal display 10 is used only as the instrument panel display 41, the combiner 40 is closed. I am doing so. When the liquid crystal display 10 is not used as the HUD 42, the combiner 40 is closed to make it difficult for outside light to enter the housing 100. Thereby, it can suppress that external light reflects on the reflective mirror 30, and is irradiated to the liquid crystal display 10, and can suppress the burning by the external light of the display panel of the liquid crystal display 10. FIG.

  In the above embodiment, the example in which the liquid crystal display 10 is moved in the vertical direction according to the vehicle speed has been described. However, the present invention is not limited to this. For example, the degree of congestion in front of the vehicle may be determined, and the liquid crystal display 10 may be moved in the vertical direction according to the degree of congestion.

  For example, when the vehicle front is imaged with an in-vehicle camera and it is recognized that a predetermined number or more of other vehicles or pedestrians are captured in the captured image, it is determined that the degree of congestion in front of the vehicle is equal to or greater than a predetermined value. When the degree of congestion is equal to or greater than a predetermined value, the liquid crystal display 10 is moved to the position shown in FIG. This is because, when the front of the vehicle is congested, there is a high possibility that the vehicle is traveling at a low speed, and even if information is displayed on the HUD 42, the information overlaps with the real image seen through the windshield, making it difficult to see the information. Conversely, when the degree of congestion is smaller than the predetermined value, the liquid crystal display 10 is moved to the position shown in FIG.

  Note that the degree of congestion in front of the vehicle may be determined for the entire captured image, or may be determined only for the region overlapping the position of the HUD 42 and its surrounding region.

  Further, it may be determined whether the vehicle is traveling on a general road or a highway based on navigation information output from the navigation device, and the liquid crystal display 10 may be moved according to the determination result. For example, when traveling on a general road, the liquid crystal display 10 is moved to the position shown in FIG. 3A, and the liquid crystal display 10 is used only as the instrument panel display 41. On the other hand, when traveling on a highway, the liquid crystal display 10 is moved to the position shown in FIG. 3B so that the liquid crystal display 10 is used as the instrument panel display 41 and the HUD 42.

  Further, the frequency of steering wheel operation (the number of steering wheel operations per fixed time) is determined based on steering angle information of the steering wheel input via an in-vehicle network such as an in-vehicle LAN, and the liquid crystal display 10 is determined according to the frequency of steering wheel operation. May be moved. The handle operation to be counted here may be limited to a handle operation with a predetermined steering angle or more.

  For example, when the handle operation frequency is equal to or higher than a predetermined value, the liquid crystal display 10 is moved to the position shown in FIG. 3A and the liquid crystal display 10 is used only as the instrument panel display 41. On the other hand, when the frequency of the handle operation is smaller than the predetermined value, the liquid crystal display 10 is moved to the position shown in FIG. 3B, and the liquid crystal display 10 is used as the instrument panel display 41 and the HUD 42.

  Moreover, although the example using the liquid crystal display 10 was demonstrated in the said embodiment, this invention is not limited to this. For example, other flat panel displays such as an organic EL display, an inorganic EL display, a plasma display, a rear projection display, and a field emission display (FED) may be used.

  In addition, each of the above-described embodiments is merely an example of implementation in carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

DESCRIPTION OF SYMBOLS 10 Liquid crystal display 10a Display area 10a ₁ 1st display area 10a ₂ 2nd display area 20 Microcomputer 21 Vehicle speed detection part 22 Movement control part 23 Rotation control part 24 Display control part 30 Reflection mirror 40 Combiner (translucent screen)
41 Instrument panel display 42 HUD
51 1st space 52 2nd space

Claims (8)

An in-vehicle display device configured to use one display for both an instrument panel display and a head-up display,
Moving means for moving the display;
A first space configured to put display information on the display into the driver's field of view as information on the instrument panel display;
A second space configured to enter display information of the display into the driver's field of view as information of the head-up display;
Display control means for controlling the display of information on the display,
When the display is moved by the moving means so that the entire display area of the display is located in the first space, the display control means is used for the instrument panel display with respect to the entire display area. While displaying information, when the display is moved by the moving means to a position where the display area spans both the first space and the second space, the display area is changed to the first display area. And display the information for the instrument panel display in the first display area, and display the information for the head-up display in the second display area. A vehicle-mounted display device. Vehicle speed detecting means for detecting the speed of the vehicle,
The moving means moves the display so that the entire display area is located in the first space when the vehicle speed detecting means detects that the speed of the vehicle is lower than a predetermined speed. When the vehicle speed detection means detects that the speed of the vehicle is equal to or higher than a predetermined speed, the display area is moved to a position where the display area spans both the first space and the second space. The in-vehicle display device according to claim 1, wherein It further comprises a congestion degree judging means for judging the congestion degree in front of the vehicle,
The moving means moves the display so that the entire display area is located in the first space when the congestion degree determining means detects that the congestion degree in front of the vehicle is a predetermined value or more. On the other hand, when the congestion degree determination means detects that the congestion degree in front of the vehicle is smaller than a predetermined value, the display area is located at a position straddling both the first space and the second space. The in-vehicle display device according to claim 1, wherein the display is moved. The vehicle further comprises traveling road determination means for determining whether the vehicle is traveling on a general road or a highway,
The moving means moves the display so that the entire display area is located in the first space when the traveling road determining means detects that the vehicle is traveling on a general road. When the traveling road determination means detects that the vehicle is traveling on a highway, the display area is moved to a position where the display area spans both the first space and the second space. The in-vehicle display device according to claim 1, wherein: A steering wheel operation frequency determining means for determining the frequency of the steering wheel operation of the vehicle;
The moving means moves the display so that the entire display area is located in the first space when the handle operation frequency determining means detects that the handle operation frequency is equal to or higher than a predetermined value. On the other hand, when the handle operation frequency determining means detects that the handle operation frequency is smaller than a predetermined value, the display area is located at a position straddling both the first space and the second space. The in-vehicle display device according to claim 1, wherein the display is moved. In the second space, a reflection mirror that reflects a display image for the second display area;
The vehicle-mounted display according to claim 1, further comprising a translucent screen configured to further reflect the display image reflected by the reflecting mirror and enter the driver's field of view. apparatus. A rotating means for rotating the screen;
The rotating means rotates the screen to a predetermined standby angle when the display is moved by the moving means so that the entire display area of the display is located in the first space. When the display is moved by the moving means to a position where the display area straddles both the first space and the second space, the screen is set at a reflection angle for reflecting the display image. The in-vehicle display device according to claim 6, wherein the display device is turned. The in-vehicle display device according to claim 6, wherein the display moves obliquely in a direction away from the reflection mirror as it moves from the first space to the second space.

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