JPS60220392A - Display unit for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a display device suitable for being mounted on a vehicle such as an automobile.

(B) Prior Art For example, the driver's seat of an automobile is provided with a display/r device for displaying vehicle speed, engine rotational speed, various warning displays, and the like. Recently, some devices using a mechanical display system instead of a mechanical meter display system have been put into practical use, and research is underway to create even better ones.

In view of this, it has been proposed to display information in color on the display section. In other words, this method attempts to improve the visibility of the display by vividly coloring the background of displayed characters and figures, or the display itself.In particular, this method attempts to improve the visibility of the display by concentrating a wide variety of displays on the display body. In the case of a multi-display system in which multiple displays are arranged, various types of information can be shown in different colors, which can be very effective. The specific structure of the display body for performing this color display includes a light-transmissive liquid crystal display plate disclosed in U.S. Pat. Song for bank amplifier lighting.

A light lamp (generally used with a color filter interposed between the two), or a display lamp equipped with a light lamp and a plurality of indicator lights as shown in Utility Model Application Publication No. 58-119436. Some types include a filter that changes the color of the light, and others have a liquid crystal display panel itself with a color display function.

In addition, as other prior art, Utility Model Application No. 58-174800
As shown in the issue, there are also versions that use color cathode ray tubes.

However, a disadvantage of these color displays is that under conditions where colored ambient light enters the driver's seat and ends up being reflected by the display, the visibility of the display may be significantly reduced. As a specific example of this,
An example of this is when a vehicle is driving on a road illuminated with sodium lamps. In other words, in this case, the yellow light is reflected by the display, making the display extremely difficult for the detour, especially if the display has a similar color tone. In the case represented by , it becomes inconvenient that it becomes almost impossible to distinguish.

(c) Purpose The present invention has been made in view of the above circumstances, and it enables necessary information to be displayed in color on a predetermined display section using a color cathode ray tube, and in particular, An object of the present invention is to provide a display device for a vehicle whose visibility is not impaired even under such special conditions.

(d) To achieve the above object, the structure includes a cathode ray tube for color displaying a display section, a control means for controlling the operation of the color cathode ray tube, and a control means for controlling the ambient light reflected by the display section. and a light color detection means for detecting light color,
The control means causes the display section to display a predetermined color at all times, but only when the light color detection means detects a certain light color, displays a color complementary to the light color on the display section. It is characterized by being constructed in a way that allows it to be reflected.

(Po) Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

A multi-display device 1 according to the present invention is provided in an instrument panel (not shown) of an automatic driver's seat. As schematically shown in the side view in Figure 7iS1, this display device 1 has a color cathode ray tube 3 on the rear side of a transmissive two-layer guest-host liquid crystal display panel 2, that is, on the side opposite to the driver, and the screen is aligned with the screen. It is placed in the same position. That is, in this embodiment, the two-layer guest-host liquid crystal display board 2 is used as a display board that directly displays various information on its display section, while the color cathode ray tube located on the back side thereof is used as a display board that directly displays various information on its display section. 3 is mainly used as a par-ref-up light source that gives a pack color to the display section of the display board 2.

The two-layer guest-host liquid crystal display panel 2 consists of a liquid crystal panel 4.0 which is made up of a liquid crystal material sandwiched between transparent electrodes.
As shown in exploded view in FIG. 2, the first layer liquid crystal panel 4 is used for display, and the first layer liquid crystal panel 5 is used for masking. That is, the speed display section 6. is located at the position shown in FIG. The engine rotation speed display section 7, remaining fuel amount display section 8, cooling water temperature display section 9, various warning display sections 11, etc. are set. In addition, the liquid crystal panel 5 on the second layer has a transparent section 12.1 corresponding to each display section 6.7.8.9.11.
The entire area other than 3.14.15.16 is used as a mask portion 17, and this mask portion 17 is capable of exhibiting a light-shielding property when a voltage is applied. And the mask part 1
7 uses a liquid crystal containing 400% of the specified pigment.

Further, a plate 18 for preventing static electricity is interposed between the liquid crystal display panel 2 and the color cathode ray tube 3. This plate 18 is for preventing the liquid crystal display panel 2 from malfunctioning due to static electricity generated on the surface of the color cathode ray tube 3, for example.

It is made by coating a transparent acrylic plate with conductive transparent paint, and the painted part is electrically grounded.

The two-layer guest host liquid crystal display panel 2 and the color cathode ray tube 3 have LCD dry/<19 and C
An RT driver 21 is provided. LCD driver 19
is each display section 6.7.8.9.1 of the liquid crystal spring 4.
The CRT driver 21 causes the screen of the color cathode ray tube 3 to appear or disappear, and the light-shielding function of the mask portion 17 of the liquid crystal panel 5 is made to appear or disappear on the screen of the color cathode ray tube 3. Project a predetermined image. And these separate drivers 19.21 are
Both are controlled by display control means 22.

That is, in this embodiment, a control means for controlling the operation of the color cathode ray tube 3 via the CRT driver 21;
A control means for controlling the operation of the liquid crystal display panel 2 via the L'CD driver 19 is built into the display control means 22 therein.

This display control means 22 is a central processing unit (cPU)
23 and ROM24. RAM25 and Hideo RAM
26 and a storage device 27, the microcomputer 28 is configured in an L-shaped configuration.

Necessary information is input to this macro computer 28 from various 8 stages of detection.
Information regarding ambient light color is input from the light color detection means.

First, the detection signals a and b from the fuel processor 29 and the water temperature sensor 31 are manually input via an interface and an A/D converter 32 (not shown). Further, a signal d from the ignition C1Φ speed sensor 33 and a signal e from the illuminance sensor 34 for knowing the engine rotation speed can be inputted via an interface not shown. In Part 1-7, these large chi^ numbers a, b, c, d, from the first stage of detection are
Along with e, the microcomputer 28 receives a detection signal f from a color sensor 30 placed at a required position via an interface (not shown).
·It has become. That is, this color sensor 3o, which detects the color of light, detects the color of ambient light, particularly the ambient light that enters the driver's seat and is reflected by the display sections 6.7, 8.9.11. Information regarding this ambient light color is input into the computer 28. On the other hand, the computer 28 outputs display signals g and h to the LCD driver 19 and the CRT driver 21 via an interface (not shown).

The computer 28 has a built-in program that can perform the following operations. First, based on the signals a and b from the fuel cell 29 and the water temperature sensor 31 inputted from the outside, a line diagram or a bar graph is displayed on the display section 7.8.9. This image is changed to display the fuel quantity, amount, cooling water temperature, and engine speed. Furthermore, the display unit 6 is configured to digitally display the traveling speed calculated based on the signal d from the vehicle speed sensor. Furthermore, the display section 6.7.8 of the first layer liquid crystal panel 4.
When displaying on 9.11, a voltage is also applied to the second layer liquid crystal panel 5 to exhibit a masking function, and at the same time, the respective display sections 6.
Different predetermined pack colors 35, 36, 37, 38, and 39 are projected on the parts corresponding to 7, 8, 9, and 11, respectively. In addition, each of the sensors 29.31.
33.34 or when some unusual judgment is made inside the computer 28 based on a signal from another sensor (not shown), the pack color 39 corresponding to the warning display section 11 of the color cathode ray tube 3 is changed. A warning is displayed by displaying a single letter or character. Further, the brightness around the driver's seat is detected based on the signal e from the illuminance sensor 34, and the brightness of the cathode ray tube 3 is adjusted according to the detected brightness. Also, based on the signal f from the color processor 30, part or all of the surface finishing parts 6, 7, 8, 9, 11 can be changed to a pack color that is complementary to the surrounding light color. ing. That is, in the ROM 24 constituting the storage device 27 of the computer 28, a certain complementary color relationship (for example, yellow-orange-blue) or a relationship close to this is recorded based on the -1st hue. . In the computer 28, the predetermined pack colors 35, 36, 37, 3 are displayed on each display section 6, 7, 8, 9, 11 at all times.
8.39, while the input signal f from the color sensor 30 conveys the incidence of colored light on the display section,
The CPU 23 calculates the stored relationship and temporarily sets some or all of the pack colors 35, 36, 37, 38, 39 to have a complementary color relationship with the light color detected by the color sensor 30. It is programmed to change.

Note that 41 is a television antenna, and 42 is a television tuner. This television tuner 42 is
This is for enjoying television broadcasts while parking, etc. That is, each liquid crystal panel 4, 5 of the liquid crystal display board 2
After switching the screen to be completely transparent, the broadcast screen is projected on the entire surface of the color cathode ray tube 3. Also,
43 is a terminal for connecting a television game or the like.

If the multi-diss 1/i device has such a configuration,
The two-layer guest-host liquid crystal display &2 displays necessary information on each display section, and at the same time, a color cathode ray tube (3) projects eight colors onto it to provide a color display with a carp-like tone. Therefore, each display part is normally given a predetermined color to show each displayed piece of information in different colors, making it easier for the driver to visually check the information. It is also possible to easily make the information recognizable to the driver mainly through color changes, such as by changing the display color depending on the value. On the other hand, under special conditions where colored ambient light enters the driver's seat and is reflected by each display, depending on the color of the light, it may be more difficult to view the original pack color.
(The display section is designed to project a color that is complementary to the ambient light color on the pack color of the display section based on a certain pre-memorized relationship, so that a contrasting effect can be obtained and In this embodiment, the display section 7 indicating the degree of engine rotation can be displayed in a yellow puck color, for example. When the vehicle is driving on a road surface illuminated with thorium lamps that receives yellow ambient light, the pack color of the display section 7 automatically changes to blue. As a result, a strong contrast appears between the liquid crystal display, which reflects the light of the yellow lamp, and the blue pack color.Therefore, even under such special conditions, the color display improves visibility. There is no risk of hearing loss, and an easy-to-read display can be placed on the M track at any time.

In this embodiment, the display body for color display is composed of a two-layer guest-host liquid crystal display panel 2 as described above and a color cathode ray tube 3 mainly used as a pack amplifier light source. Therefore, it has the following advantages. That is, first, compared to a display using only a color liquid crystal display panel, it is possible to obtain a brighter color tone with better contrast. Also,
It is possible to display characters, detailed figures, etc. on the liquid crystal display panel 2 side, and also to display them on the display section 6, 7, 8, 9, 11 of the second layer liquid crystal panel 4 from the color cathode ray tube 3. Since the boundaries of the colors to be displayed are clarified by the second-layer mask liquid crystal panel 5, one
1- It is sufficient to use one with relatively low resolution. Furthermore, since the display section of the liquid crystal display panel 2 and the display function of the color cathode ray tube 3 can be used in combination, a wide variety of displays with a three-dimensional effect can be performed. In addition, by making both panels 4.5 of the liquid crystal display panel 2 completely transparent, it is possible to easily realize the state in which the color cathode ray tube 3 is used in China and Germany.

In addition, in the above embodiment, the complementary color relationship stored in the storage device 27, especially its ROM 24, may be a complementary color relationship stored in the storage device 27, particularly in its ROM 24, such that opposite hues may be stored for each hue constituting the hue wheel, or a complementary color relationship may be stored in the storage device 27, particularly in its ROM 24. It is also possible to store a value that is opposed only to the hue of the surrounding light. Further, the color sensor 30 constituting the light color detection means may be capable of detecting all light colors or only a specific light color, depending on the memory in the storage device 27. Well, the name doesn't matter.

Further, the display section that changes the pack color according to the ambient light color may be a part or all of it, and if a part of it changes, the display section whose pack color is the same may be changed. It is possible to devise a color-coding scheme in advance so that the pack color does not appear, or it is possible for display parts of the same pack color to appear from time to time.

Next, referring to another embodiment (not shown), in the sixth embodiment, a color display body is constructed by combining a color cathode ray tube 3 mainly used as a backup light source and a two-layer guest-host liquid crystal display panel 2. However, the configuration of the display body is not limited to this. For example, a color cathode ray tube, which is mainly used as a backup light source, is arranged on the back side of a light-transmitting liquid crystal display board, and a light-blocking material is constructed between the cathode ray tube and the liquid crystal display board to display the display on the liquid crystal display board. A color display body may be used in which a mask member having a light-transmitting part is interposed in a part corresponding to the part.

In addition, devices used in combination with color cathode ray tubes used as light sources are not limited to liquid crystal display boards, but in short, anything that can electrically display detailed figures, characters, etc. Bye.

Next, the present invention can also be implemented by configuring the display body only with a color cathode ray tube and directly using the screen as the display section. In this case, the necessary display on the display section and the corresponding color are simultaneously displayed on the LCD monitor tube, and the LCD driver 19 and its control means circuit of the previous embodiment are of course unnecessary, and the control Means 22 is CRT
Via the driver 21, the display and color of the front and rear sections are controlled simultaneously. In this case, the display color may be changed to the ambient light color by changing the pack color of the display section (or by changing the color of the display itself).

Note that the present invention is particularly effective when applied to a multi-display system in which various displays are shown in different colors.
Basically, the present invention is applicable to all display devices for vehicles that are configured to display in color.

(f) Effect 7 (Since the invention is based on the configuration described below, the necessary information is displayed in color on a predetermined display section using a color cathode ray tube, and it is possible to Under special conditions affected by colored ambient light, such as with sodium lamps,
The displayed color changes to a contrasting color that is complementary to the ambient light color.

We provide a safe display device for vehicles that always ensures visibility.

[Brief explanation of the drawing]

FIG. 1 is a schematic structural explanatory diagram showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a display body of a multi-display device in the same embodiment. l... Lu multi-display device 2 fists... Two-layer guest host liquid crystal display board 3s battle - color cathode ray tube 6.7.8.9.11-,, display unit 21, φ, CRT driver 22... (display ) Control means 23...Central processing unit 27, storage device 28, own microcomputer 30, 0 color sensor (light color detection means) 35.36. ,．． 37.38,39...punk color
− Attorney Hiroshi Akazawa

Claims (1)

[Claims] The display unit comprises a color cathode ray tube for displaying color on a display section, a control means for controlling the operation of the color cathode ray tube, and a light color detection means for detecting the color of ambient light reflected by the display section; The control means is configured to display a predetermined color on the display section at all times, but display a color complementary to the light color on the display section only when a certain light color is detected by the light color detection means. A display device for a vehicle, characterized in that it is configured to display images.