JPH0810022Y2 - Vehicle display - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention reflects a display image on a display by a reflective surface provided in front of a driver's seat, and drives the vehicle from the driver's seat through the reflective surface. The present invention relates to a vehicular display device that allows information to be visually recognized.

[Problems to be solved by conventional techniques and devices]

This type of vehicle display device is shown in FIG.

In the device shown in the figure, a display unit accommodating portion 20a is formed in a column cover 20 that covers the steering shaft, and a display unit 50 that displays various operation information near the windshield 10 of each of the column cover 20 and the display unit accommodating unit 20a. And a dashboard 40 with a reflective member 30 with the reflective surface facing the driver's seat.
It is provided on the upper side, and the display of the display 50 is reflected to the driver's seat side by the reflection member 30. Thereby, when the reflection member is viewed from the viewpoint position 60 on the driver's seat side or in the vicinity thereof, the virtual image X of the display device 50 is visually recognized, and the driving information can be visually recognized from the driver's seat.

In this way, when the display image of the display device is displayed using the reflection surface, the display image (virtual image X) becomes a so-called distant display that is visually recognized at a deep position of the reflection surface, and the user is gazing ahead while traveling. The driver can see the display by reducing the amount of movement of the focus.

However, in the distant display as described above, the moving amount of the focal point can be reduced as the position of the virtual image X is farther from the viewpoint position, while the size of the display image actually visually recognized is from the viewpoint position to the virtual image X. Since the distance becomes smaller as the distance increases, there is a problem that if the display position is set far away and the visibility is improved, the visibility is reduced in terms of the size of the display image. Increasing the size of the display itself has a problem in the space occupied by the display in a limited space around the driver's seat.

The present invention, in a display device for a vehicle that uses a reflective surface to perform a distant display, improves the visibility by enlarging the display image even in the distant display, and further selects the display content of the display. The purpose is to increase the variation of display by enlarging a specific display image.

[Means and Actions for Solving the Problems]

The vehicle display device of the present invention made to achieve the above object reflects a display image of a display device for displaying driving information of a vehicle on a reflection surface in front of a driver's seat, and displays the display on the driver seat. In a vehicular display device that is viewed from the side, a first cylindrical lens having a cylindrical axis oriented in the horizontal direction of the display and a cylindrical axis perpendicular to the cylindrical axis of the first cylindrical lens. A second cylindrical lens directed to the second cylindrical lens, and the second cylindrical lens is movable in the cylindrical axis direction of the first cylindrical lens.

When viewed from the driver's seat side, the display image of the display is visually recognized through the magnifying lens and the reflecting surface, and the virtual image of the display image is magnified by the magnifying lens and is formed further away than when there is no magnifying lens. It

Further, the display image on the display is partially enlarged by moving the second cylindrical lens.

〔Example〕

FIG. 1 is a sectional view showing a vehicular display device according to a first embodiment of the present invention. In FIG. 1, 1 is a windshield of the vehicle,
Reference numeral 2 is an instrument panel, and 3 is a steering wheel.

A reflection plate 4 having a reflection surface facing the driver's seat is attached to the instrument panel 2, and a display device 6 for displaying a vehicle speed or the like is provided on an upper portion of a steering column 5 which covers a shaft rod 3a of the steering wheel 3. Are housed with the display surface facing the reflection plate 4 side. As the display device 6, a self-luminous type using a fluorescent display tube, a light emitting diode, a transmissive liquid crystal having a backlight, or the like is applied. Further, 31 is a first cylindrical lens that is arranged in the front position of the display device 6 so as to be movable in the front-rear direction, and 32 is cooperated with the first cylindrical lens 31 and at the same time with respect to the first cylindrical lens 31. It is a second cylindrical lens arranged so as to be movable in the left-right direction of the vehicle, and the display image of the display device 6 is magnified in the vertical direction by the first cylindrical lens 31, and a part of this magnified image is the second cylindrical lens. Cylindrical lens 32
Is enlarged by the left and right. Then, when the reflection surface of the reflection plate 4 is seen through the inside of the steering wheel 3 from the viewpoint position 8 on the driver's side, the display image of the display device 6 is magnified by the cylindrical lenses 31 and 32, and the virtual images 9 and 9 ′ thereof are displayed on the vehicle. It is visually recognized at the far-distance position in front.

FIG. 2 is a diagram showing the details of the display device 6 and the first and second cylindrical lenses 31, 32. The display device 6 is connected and fixed to a circuit board 11 incorporating a display drive circuit and the like, and the cylindrical lens 3 is provided on the front surface of the display surface 6a.
1,32 are arranged.

The first cylindrical lens 31 is arranged with its cylindrical axis direction oriented in the left-right direction of the display device 6.
On both left and right side surfaces of the cylindrical lens 31 of, supporting pieces 31a,
31b are respectively formed, and the support piece 31a has a screw hole 31c,
Guide holes 31d are formed in the support pieces 31b, respectively.

The guide hole 31d of one support piece 31b is slidably fitted into a guide rod 33 arranged at a right angle to the display surface 6a of the display device 6, and the guide hole 31d is provided in the screw hole 31c of the support piece 31a. rod
A male screw 35 attached to the rotary shaft of the first motor 34 in parallel with 33 is screwed.

When the first motor 34 is driven, the male screw 35
Is rotated and the first cylindrical lens 31 is a guide rod.
33 and the male screw 35 are moved in the axial direction. At this time, the first cylindrical lens 31 is moved back and forth with respect to the display surface 6a according to the rotation direction of the first motor 34.

The second cylindrical lens 32 is arranged at the front position of the first cylindrical lens 31 with its cylindrical axis perpendicular to the cylindrical axis of the first cylindrical lens 31, and the second cylindrical lens 32 is arranged in the cylindrical axial direction of the second cylindrical lens 32. First length
The width of the second cylindrical lens 32 is substantially equal to the width of the first cylindrical lens.
It is formed to cover a part of 31.

Second cylindrical lens 32 Supporting pieces on both upper and lower sides
32a and 32b are formed respectively, and the support piece 32a has screw holes 32c.
However, guide holes 32d are formed in the support pieces 32b, respectively.

On the other hand, a guide rod 36 parallel to the cylindrical axis of the first cylindrical lens 31 and a second motor 37 are attached to the support piece 31b of the first cylindrical lens 31, and rotation of the second motor 37 is performed. The shaft has a male screw parallel to the guide rod 36.
38 is attached.

The guide hole 32d of the one-sided support piece 32b of the second cylindrical lens 32 is slidably fitted in the guide rod 36, and the male screw 38 is screwed into the screw hole 32c of the support piece 32a.

When the second motor 37 is driven, the male screw 38
Is rotated, and the second cylindrical lens 32 is moved left and right in the axial direction of the guide rod 36 and the male screw 38 according to the rotating direction of the second motor 37.

FIG. 3 is a diagram showing a display pattern on the display surface 6a of the display device 6. Note that this display pattern shows a case where the display pattern is viewed through the reflection plate 4 in order to correspond to a display example described later. That is, the actual pattern on the display surface 6a is left-right inverted. In the figure, 6A is a speed display segment, 6B is a fuel remaining amount display segment, 6C is an odometer display segment, and 6D.
Is a temperature display segment and 6E is a select position display segment.

FIG. 4 is a diagram showing an example of the moving position of the second cylindrical lens 32, and the first cylindrical lens 31.
The second cylindrical lens 32 is located at the position of the fuel quantity display segment 6B in the display pattern enlarged in the vertical direction by.

The optical positional relationship in this state is as shown in FIG. 5, and the virtual images 9A magnified above and below the speed display segment 6A and the remaining fuel amount display segment 6B by the first cylindrical lens 31. , 9B are formed, of which virtual image 9
B is enlarged in the left-right direction by the second cylindrical lens 32 to form a virtual image 9B '. Then, from the viewpoint position 8, the virtual image 9A and the virtual image 9B 'can be visually recognized adjacent to each other, and when the reflector 4 is viewed from the viewpoint position 8, the velocity expanded vertically as shown in FIG. Adjacent to the display image A of the display segment 6A, the display pattern B of the fuel level display segment 6B enlarged vertically and horizontally is visually recognized.

FIG. 9 shows the first and second motors 34, 37 in the first embodiment.
3 is a block diagram of a control means for driving the motor drive circuits 41, 42 controlled by a CPU 43 such as a microprocessor. The motor drive circuits 41, 42 respectively include a first motor 34 and a second motor 37. It controls the rotation direction and drive control. Further, the CPU 43 is connected with a vehicle speed sensor 44 for detecting the traveling speed of the vehicle, and manual switches 45, 46 which are manually operated by a driver, and the CPU 43 responds to the detected speed of the vehicle speed sensor 44 or the operation state of the manual switches 45, 46. And controls the motor drive circuit 41 and the motor drive circuit 42.

Predetermined vehicle speed information is set in the CPU 43. When the vehicle speed detected by the vehicle speed sensor 44 exceeds the set vehicle speed, the CPU 43 controls the motor drive circuit 41 to drive the first motor 34. , The first cylindrical lens 31 is moved to a predetermined position to enlarge the display image in the vertical direction,
The motor drive circuit 42 is controlled to drive the second motor 37,
The second cylindrical lens 32 is moved to the position of the vehicle speed display segment 6A as shown in FIG.

As a result, as shown in FIG. 8, the respective displays B, C, which are enlarged in the vertical direction by the first cylindrical lens 31.
D and E are visually recognized, and the speed display A further enlarged to the left and right by the second cylindrical lens 32 is visually recognized.

Further, the CPU 43 controls the motor drive circuits 41 and 42 in accordance with the operating states of the manual switches 45 and 46 so that the front and rear positions of the first cylindrical lens 31 and the left and right positions of the second cylindrical lens 32 are controlled. Instead, the display image can be vertically enlarged to a desired size of the driver, and the desired display image can be horizontally enlarged.

FIG. 10 is a diagram showing a second embodiment. This embodiment uses the first and second cylindrical lenses similarly to the first embodiment, and uses the vehicle speed display segment 6A 'as the display pattern of the display device 6'. Warning display segments 6F 'to 6I' are formed in the empty space.

Further, the device of this embodiment is suitable for use in a so-called head-up display that uses a windshield or the like as a reflective surface and is provided with another speedometer on the instrument panel or the like, and when a warning state occurs, Of the warning display segments 6F 'to 6I', the segment corresponding to the warning state is lit and the vehicle speed display segment 6A '
Is turned off. Then, at this time, in conjunction with the lighting of the warning display, for example, by the same control means as in the first embodiment,
The cylindrical lens of is moved to the position of the vehicle speed display segment 6A '. As a result, the warning displays F to I enlarged vertically and horizontally as shown in FIG. 11 are visually recognized. In the figure, all warning displays are lit up.

Thus, the display segment of the display device is
Since it is enlarged and displayed by the second cylindrical lens, the visibility is improved even in a small segment, and it is possible to utilize the empty space of the display segment.

[Effect of device]

As described above, according to the present invention, in a vehicular display device that uses a reflective surface to perform distant display, a cylindrical axis is oriented horizontally between the display and the reflective surface in the horizontal direction of the display. A first cylindrical lens, and a second cylindrical lens having a cylindrical axis oriented at right angles to the cylindrical axis of the first cylindrical lens, the second cylindrical lens being the first cylindrical lens. Since it is movable in the cylinder axis direction, the virtual image of the display image is enlarged further by the cylindrical lens and is displayed further away, so that highly visible display can be performed.
Further, since the display image of the display is partially enlarged by moving the second cylindrical lens, it is possible to selectively enlarge a specific display image with respect to the display content of the display. Will increase.

[Brief description of drawings]

FIG. 1 is a sectional view showing a vehicular display device according to a first embodiment of the present invention, FIG. 2 is a view showing details of a display and a magnifying lens in the first embodiment, and FIG. 3 is a display in the first embodiment. FIG. 4 is a diagram showing a display pattern of a container, FIG. 4 is a diagram showing an example of a moving position of the second cylindrical lens in the first embodiment, FIG. 5 is a diagram showing an optical positional relationship in the state of FIG. 4, FIG. 6 is a diagram showing a display example in the case of enlarging the remaining fuel amount display in the first embodiment, FIG. 7 is a diagram showing another example of the moving position of the second cylindrical lens in the first embodiment, FIG. 8 is a diagram showing a display example when the vehicle speed display is enlarged in the first embodiment, FIG. 9 is a block diagram in the first embodiment, FIG. 10 is a diagram showing the second embodiment, and FIG. FIG. 12 is a view showing a display example in the second embodiment, and FIG. 12 shows a display device for a vehicle using a reflecting member. It is a diagram showing a come example. 4 ... Reflector, 5 ... Steering column, 6, 6 '... Display device, 31, 32 ... Cylindrical lens, 8 ... Viewpoint position.

Claims (1)

[Scope of utility model registration request] 1. A vehicle display device in which a display image of a display for displaying driving information of a vehicle is reflected by a reflecting surface in front of a driver's seat so that the display of the display can be visually recognized from the driver's side. A first cylindrical lens having a cylindrical axis oriented in the left-right horizontal direction of the display; and a second cylindrical lens having a cylindrical axis oriented at right angles to the cylindrical axis of the first cylindrical lens, A display device for a vehicle, wherein the second cylindrical lens is movable in the cylindrical axis direction of the first cylindrical lens.