JPH01253612A - Display apparatus for vehicle - Google Patents

Abstract

PURPOSE:To improve visibility and to improve safety especially at a high speed, by recording a plurality of displaying images having the different visual depths on a hologram beforehand, and changing the feeling of the depth in the display in correspondence with a driving state. CONSTITUTION:A pair of cartridges 9 and 9 are provided at the rear side of a small window 3 of a display plate 4. Hologram films 10 are wound around the cartridges. The numbers of 0-89km/h at the time of low speed are recorded on the film so that the image comes up to the near side closely. The numbers of 80km/h and more at the time of high speed are recorded so that the image is visually recognized at the far side at a deep point. In this constitution, light is emitted from a regenerating light source 13, and the light is regenerated. The hologram film 10 is driven through a gear motor 14 based on the signal from a vehicle speed sensor. Therefore, the speed display especially at 80km/h or more is visually recognized at the far position on the deep inner side corresponding to the driving state of the vehicle. The inner and outer focusing time of the eyes is shortened and safety can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hologram-based display device for a vehicle that utilizes light interference and diffraction phenomena.

(Prior Art) Conventionally, various meters and other displays on an instrument panel are all displayed using real images, and the position of the displayed image has been fixed.

On the other hand, when driving, the driver's eyes generally focus on the near point when driving at low speeds, and the far point when driving at high speeds.In particular, when driving at high speeds, the driver's eyes focus on the meter display on the instrument panel from a far distance in front of the outside. When I moved my viewing point to , there was a problem that it took a while for my eyes to focus.

To solve this problem, the meter display image should be displayed closer when the speed is low and further away when the speed is high, but with conventional real image display means, the meter itself is Since it has to be moved deep inside the panel, it may interfere with the air conditioning tact and various wiring.
Implementation is difficult.

There is also a method for changing the imaging position by mechanically moving the lens, but this method has the problem of requiring an open space corresponding to the depth of the lens movement.

Furthermore, as described in Japanese Utility Model Application Publication No. 611-167676, there is a device that displays characters on an instrument panel using a porocram, but this display device cannot provide a sense of depth in the display. As mentioned above, there was the problem that it took time for the eyes to focus.

(Purpose of the Invention) This invention uses a hologram whose imaging position is changed in advance to change the sense of depth according to the driving condition while avoiding increasing the size of the display device itself, thereby improving visibility. It is an object of the present invention to provide a display device for a vehicle that can improve safety, particularly when driving at high speeds, by reducing the time it takes for the eyes to focus when moving the visual point from a distant place to the display unit. purpose.

(Structure of the Invention) The present invention provides a display device for a vehicle using a hologram, in which a plurality of display f-elements having different visual depths of the hologram are recorded on the porogram, and the plurality of images are recorded on the porogram. The vehicle display device is characterized in that it includes a switching means that switches according to the driving condition, and is configured to change the sense of depth of the display according to the driving condition.

(Effects of the Invention) According to the present invention, since a plurality of display images having different visual depths are recorded in advance on the hologram, the switching means switches the images according to the operating state. Therefore, the sense of depth of the display can be changed depending on the driving condition, and as a result, there is an effect that the visibility can be improved.

Furthermore, by using the above-mentioned hologram, it is possible to avoid increasing the size of the display device itself, which has the effect of compactly incorporating the device into a predetermined part of the meter hood that goes down from instrument 1 to the panel. .

In addition, the sense of depth of the display changes depending on the driving condition, which reduces the time it takes to focus the eyes when moving the viewing point from a distant place to the display, which improves safety, especially when driving at high speeds. It has the effect of improving the

(Example) An embodiment of the present invention will be described in detail below based on the drawings.

The drawings show a vehicle display device, and in FIGS. 1 and 2, a meter hood 2 having a concave cross section is disposed on the driver's side of the instrument panel 1.
A display board 4 having a small rectangular window 3 is disposed at the open bottom facing the driver's eye point.

On the left side of the small window 3 in the above-mentioned display board 4, a fuel display section 5 and a water temperature display section 6 for warning warning are formed, while on the right side of the above-mentioned small window 3, for example, a light emitting diode type zone display tachometer 7 is formed. is forming.

On the back side of the above-mentioned small window 3, there is a pair of left and right sprockets 8.
, 8 and Parrone 9, 9 are arranged, and a holographic film [hereinafter simply referred to as hologram (h)] is wound and stretched between these left and right cartridges 9 and 9.

(abbreviated as ``jogran'') 10 is wound up and unwound by the above-mentioned sprockets 8, 8 that engage with the holes 11 of the 1 degree hologram.

In this embodiment, the above-mentioned hologram 10 is used for speedometer display, and this hologram 10 has a plurality of display images 12 with different visual depths, specifically "0",
"10", "20", "30", "40", "50", "
60'', ``70'', ``80'', ``90'', r 1. O
OJ, rllOJ, "120", etc. are recorded as numbers without indicating the vehicle speed.

Here, "0-70 km/h at low speed"
The numbers from ``0'' to ``70'' are recorded in advance so that they pop out in front of the hologram 10, while at high speeds of 80 km.
"80", "90", "100" corresponding to / h or more
, rllOJ, r120J, . . . are recorded in advance so that they are set further inward than 0 so that they can be visually recognized from a distance.

A meter regeneration light source 13 using white light is installed in a predetermined part of the meter hood 2 facing the hologram] through the small window 3 mentioned above.
is arranged, and when the meter reproducing light source 13 is energized, the hologram 10 is irradiated with a reference light a similar to that used when producing the hologram at a predetermined angle.

Further, a gear motor 14 is interlocked with the cartridge 9, and a signal from a vehicle speed sensor 15 drives the gear motor 14.
The image forming apparatus constitutes a switching means that drives the images 12 and switches the plurality of images 12 according to the operating state.

The illustrated embodiment is constructed as described above, and its operation will be explained below.

Now, when the vehicle is running, the signal output from the vehicle speed sensor 15 causes the gear motor 14 to wind and rewind the hologram 10 between the pair of left and right parones 9, 9, so that the meter reproducing light source 13 When power is applied to the reference light a
Based on the irradiation, a virtual image 12 corresponding to the vehicle speed is reproduced.

The above-mentioned virtual image 12, as shown in FIG.
When the vehicle speed is 80 kIn/h, it is visible as it protrudes toward the front, and when the vehicle is moving at a high speed of 80 kIn/h, it is visible in a far-away position retracted into the interior.

As a result, the sense of depth displayed by the virtual image 12 can be changed depending on the driving condition, that is, the vehicle speed, and visibility can be improved.

Further, by using the above-described hologram 10, it is possible to avoid increasing the size of the display device itself, and this display device can be compactly incorporated into a predetermined portion of the meter hood 2 in the instrument panel 1.

In addition, the depth of the display changes depending on the driving condition (vehicle speed), so when you move your viewing point from a distant place to the display,
This has the effect of reducing the amount of time the driver spends keeping his eyes out of focus, and improving safety, especially when driving at high speeds.

4 and 5 show other embodiments of the dual-use display device,
A steering column 20 of one steering wheel is supported via a bracket 18 on the Tarashu upper panel 17 fixedly connected to the rear of the cowl panel 16, while utilizing the internal space between the above-mentioned bracket 18 and the instrument panel 1. An air conditioner 21 is installed.

The above-mentioned air conditioner 21 includes a heater case 23 forming a mixing chamber 22, a center vent outlet 25 formed in a vent door portion of the heater case 23 via a ventilation duct 24, and a defroster door of the above-described heater case 23. A defroster outlet 27 formed through a tefroster tact 26 and a heater outlet and others (not shown) are provided in the section.

The above-mentioned ventilation duct 24 is connected to the hood outer 28.
and the two hood inners, and the aforementioned cartridge 9.9 is placed on both left and right sides of this ventilation tact 24.
are placed.

The back side of the above-mentioned hologram 10, which is wound and stretched between the pair of left and right cartridges 9, 9, is movably held by a film presser 30 which also serves as a reflector, while the front side of the above-mentioned hologram 10, A small window 31 is opened in the hood inner 29, and a filter 32 is disposed in the small window 31 to prevent dust from adhering to the hologram 10 and from scratching it.

Further, a meter reproducing light source 13 is disposed at a predetermined portion facing the hologram 10 via the above-mentioned small window 31 and filter 32, which irradiates the hologram 10 with reference light a (white light).

- On the other hand, the holding member 3 is attached to the upper surface 23a of the heater case 23.
3. Reflection hologram 35 and half mirror via 34
36 is maintained.

Here, necessary warning display information such as fuel, water temperature, door, oil, etc. is recorded in advance on the above-mentioned reflection type hologram 35 disposed below the half mirror 36.

Furthermore, a warning reproduction light source 37 for irradiating reference light b (white light) onto the reflection hologram 35 is disposed at two predetermined portions of the hood inner facing the reflection hologram 35 .

In addition, in Fig. 4, 38 is a steering wheel;
One is the front crow, and in FIGS. 4 and 5, the same parts as in the previous embodiment are given the same numbers and symbols.

With this configuration, when the meter reproducing light source 13 and the warning reproducing light source 37 are energized, the virtual image [2] (see FIG. 3) corresponding to the driving condition (vehicle speed) described above is displayed as a half mirror.
At the same time as it is reflected by 36 and visible, half mirror 36
Since the warning display information at the bottom is visible through the half mirror 36, the image information of the vehicle speed information with a sense of depth and the warning display information can be viewed in an overlapping state.

Further, as shown in FIG. 4, the angle θ1. If the image is recorded in advance so that it is reproduced tilted over θ, even if the reproduced image of the hologram shown by the imaginary line in the figure moves back and forth, it will be tilted from within the line of sight e (from the reflection range of the half mirror 36). ) There will be no misalignment.

In this way, different kinds of visual information can be wrapped and displayed, so even if the instrument panel 1 is complicated by air conditioning tact, wiring harness, etc., the display device can be compactly installed while saving space. There is an effect that can be arranged.

Note that in other respects, it goes without saying that the same operations and effects as in the previous embodiment can be achieved.

In the correspondence between the configuration of the present invention and the above-described embodiment, -1,1-- The plurality of display images of the present invention correspond to the image 12 for displaying the vehicle speed of the embodiment, and the switching means is , the vehicle speed sensor 15, and the gear A/motor 14. However, the present invention is not limited to the configuration of the above-described embodiment.

For example, in each of the above-mentioned embodiments, the reference light is emitted from the hologram surface side facing the hologram], but the reference light of the reproduction light source is emitted from inside the hologram 10 described in lx, that is, from deep within the film. Of course, it may be configured in any number of ways.

Also, for the reference light, a laser beam may be used instead of white light, and examples of porograms using white light include Rainbow Porogram J1, Lippmann Bo I'7 Gram,
Needless to say, either multiplex or polokurum may be used.

[Brief explanation of the drawing]

FIG. 1riJ shows an embodiment of the present invention,
i is a system diagram of a display device for a vehicle, FIG. 2 is a perspective view of the main part of FIG. 1, -,12,,- FIG. FIG. 5 is a partially enlarged sectional view taken along the v-v line in FIG. 4. FIG. 10... Hologram 12... Virtual image 13...
・Reproduction light source 14...Gear motor 15...Vehicle speed sensor = 13- Fig. 1 10...Hologram 70/Paper hologram 12/° Ujikugi Fig. 3

Claims (1)

[Claims] (1) A vehicle display device using a hologram, The visual depth of the hologram above is different. Images for multiple displays are recorded on the hologram. record, Switch between the above multiple images depending on the driving status In addition to providing a switching means, The sense of depth of the display can be changed depending on the driving condition. carefully configured Vehicle display device.