JP2005300359A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle capable of liquid crystal display with excellent appearances by simplifying configuration of a background display part displaying a background of a liquid crystal display part. <P>SOLUTION: The display device for the vehicle comprises: a liquid crystal panel for displaying vehicle information and the liquid crystal display part having a transmission illumination light source transmitting and illuminating the liquid crystal panel; the background display part displaying the background of the vehicle information; and a half mirror arranged between the liquid crystal display part and the background display part and displaying the vehicle information displayed in the liquid crystal part by a real image and the background displayed in the background display part by a virtual image. Thus, since the background display part is constituted to be separated from the liquid crystal display part, the background display part can be simplified, and the appearances of liquid crystal display can be improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle display device having a liquid crystal display unit that displays vehicle information using a liquid crystal display device.

  Some combination meters, which are display devices for vehicles, use a liquid crystal display unit for indicator display. The indicator is lit and displayed by a light source as necessary to prompt the driver's attention, and a plurality of indicators are provided at one or several locations in the display device for the vehicle in order to improve visibility and design by the driver. Are arranged adjacent to each other (hereinafter referred to as a multi-display unit).

  For example, in the liquid crystal panel of the multi-display unit (liquid crystal display unit), each indicator is entirely black (light-shielding) when no voltage is applied, and a predetermined shape formed as a segment is translucent when a voltage is applied. . Then, an opening is provided in the dial of the combination meter, and the liquid crystal panel is disposed in the opening so that an occupant can visually recognize the liquid crystal panel. The background of the display by this liquid crystal panel needs to be displayed in multiple colors.For example, when displaying a fuel warning, the background is lit in yellow, and when displaying a door warning, the background is lit in red. When the fog lamp is activated, the background is lit in green.

  In order to illuminate and display the background of the liquid crystal panel, a back light source is disposed on the back side of the liquid crystal panel, and the liquid crystal panel is transmitted and illuminated by the back light source. When a multi-color light source (yellow LED, red LED, green LED) is arranged as a back light source, it is necessary to arrange a diffusion plate or the like for improving color unevenness, or to arrange a large number of LEDs of each color. There was a problem that the composition of was complicated.

  That is, there is a problem in that the configuration of the background display function becomes complicated because the back light source is burdened with the function of illuminating the liquid crystal panel and the background display function of changing the background color. In other words, the display of the liquid crystal display unit is obtained by transmitting and illuminating the liquid crystal panel, but the background display unit that should display the background of the display of the liquid crystal display unit is also configured as a back light source. There was a problem that became complicated.

  In addition, the segment of the indicator that is not displayed becomes black in principle because no voltage is applied (in the case of reverse control, it has translucency), but in reality, it is slightly more translucent than the black surrounding area of the segment. Have. As a result, a problem arises in that the light from the back light source appears slightly translucent through the segment of the indicator that should not be displayed (hereinafter abbreviated as “off-seg is visible”).

  In addition, there is a problem that the end face of the opening frame of the opening portion shines due to the reflected light from the back light source, and the appearance is poor (hereinafter abbreviated as “the end face of the opening frame shines”).

  The present invention has been made in view of the above points, and provides a vehicular display device capable of simplifying the configuration of a background display unit that displays the background of a liquid crystal display unit and capable of providing a good-looking liquid crystal display. Objective.

  In order to achieve the above object, the present invention employs the following technical means.

  The vehicle display device according to claim 1 displays a liquid crystal display unit having a liquid crystal panel for displaying the first vehicle information, a liquid crystal display unit having a transmission illumination light source for illuminating the liquid crystal panel, and a background of the first vehicle information. It is provided between a background display part, a liquid crystal display part, and a background display part, and is provided with the half mirror which displays 1st vehicle information by a real image and a background by a virtual image.

  Conventionally, the background display unit is configured by a back light source of the liquid crystal display unit, but in the present invention, since the liquid crystal display unit and the background display unit are separated, the degree of freedom in designing the background display unit And the configuration of the entire vehicle display device can be simplified.

  Specifically, as described above, conventionally, a multicolor light source (yellow LED, red LED, green LED) is arranged as a back light source of the liquid crystal display unit, and a diffusion plate or the like is arranged for improving color unevenness. However, since a large number of LEDs of each color are arranged, there is a problem that the configuration of the background display unit becomes complicated.

  However, in the present invention, since the liquid crystal display unit and the background display unit are separated, the degree of freedom in designing the background display unit is improved. For example, the distance between the light source and the diffusing plate can be increased, so that it is not necessary to arrange a plurality of light sources for each color, and the configuration of the light source can be simplified as the entire vehicle display device. As a result, the control device that controls these light sources can also be simplified.

  In the present invention, a half mirror that displays the first vehicle information as a real image and the background as a virtual image is arranged between the liquid crystal display unit and the background display unit, and these are overlapped so that the passenger can visually recognize them. Therefore, the degree of freedom in designing the background for the first vehicle information is improved, and the appearance of the vehicle display device can be improved.

  For example, as described above, conventionally, there has been a problem that “off-seg is visible” in the liquid crystal display unit. However, in the present invention, since the background of the background display unit is overlaid on the first vehicle information of the liquid crystal display unit with the half mirror, the “off segment” becomes blurry and difficult to see, and the “off segment is visible” problem. Solvable.

  The vehicle display device according to claim 2 is characterized in that, in the vehicle display device according to claim 1, the background displayed by the background display unit is switchable. In this invention, since the background can be switched by the background display unit, for example, it is possible to switch the background when necessary to give an effect to alert the occupant (ambient effect) or to give a sense of rest. The liquid crystal display with good appearance becomes possible.

  The vehicle display device according to claim 3 is the vehicle display device according to claim 2, wherein the background displayed by the background display unit is a single color. In the present invention, the above effect can be obtained even when the background is a single color. For example, the background is red to alert the occupant, or the background is green to give the occupant a sense of rest.

  The vehicle display device according to claim 4 is the vehicle display device according to claim 2 or 3, wherein the background display portion is linked to the switching of the first vehicle information displayed by the liquid crystal display portion. Control means for switching the background to be displayed is provided.

  In this invention, the control means which switches a background in response to switching of 1st vehicle information is provided. Therefore, for example, when the vehicle information needs to call attention to the occupant, the background is used as a background to call attention to the occupant, and the occupant is given a sense of rest from the first vehicle information that needs to call attention to the occupant. When switching to the appropriate first vehicle information, the background can be switched from the background that alerts the occupant to the background that gives the occupant a sense of reassurance, and a good-looking liquid crystal display becomes possible.

  The vehicle display device according to claim 5 is the vehicle display device according to any one of claims 1 to 4, wherein the second vehicle information is displayed using a printed dial. A second display unit is provided, and the first vehicle information is displayed from an opening formed in the dial.

  In the present invention, the liquid crystal display unit that displays the first vehicle information is a part of the vehicle display device. For example, the present invention can be applied to a case where the liquid crystal display unit is a multi-display unit in which a plurality of indicators are arranged adjacent to each other at one place. Specifically, when the vehicle information is a fuel warning, the background is yellow, and when the vehicle information is switched from a fuel warning to a door warning, the background is switched from yellow to red, etc. it can.

  The vehicle display device according to claim 6 is the vehicle display device according to any one of claims 1 to 5, wherein the liquid crystal display unit displays a virtual image of the background displayed by the background display unit. It is characterized by being larger than the real image of vehicle information.

  In this invention, since the virtual image of the background displayed by the background display unit is made larger than the real image of the vehicle information displayed by the liquid crystal display unit, the boundary surface between the liquid crystal display unit and the outside can be blurred and difficult to see. The appearance of the display device can be improved. For example, as described above, there has conventionally been a problem that “the end face of the opening frame is shining”. However, according to the present invention, the background display area of the background display section can be made larger than the vehicle information display area of the liquid crystal display section, and the “light of the end face of the opening frame” can be blurred and difficult to see. . Thereby, the problem that “the end face of the opening frame shines” can be solved.

  The vehicular display device according to claim 7 is the vehicular display device according to any one of claims 1 to 6, wherein the transmitted illumination light source is a white light source. According to the present invention, the background of the achromatic color vehicle information is overlapped with the occupant so that the color display of the vehicle information can be easily designed.

  Hereinafter, a case where the display device for a vehicle according to the present invention is applied to a combination meter mounted on an automobile will be described with reference to the drawings.

(First embodiment)
(Constitution)
FIG. 1 is a partial front view of a combination meter 100 according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a schematic diagram for explaining an electric circuit configuration of the combination meter 100 according to the first embodiment of the present invention.

  The combination meter 100 is disposed at a position visible from the driver in front of the driver's seat of the automobile, and includes a display panel 12 for displaying various information and allowing the driver to visually recognize the information. The display panel 12 is a speedometer that displays the speed of the automobile in the combination meter 100. In FIG. 1, the vertical direction is the vertical direction of the automobile, and the upper direction is the upper side of the automobile.

  The display board 12 is formed of a light-transmitting material, for example, a flat plate such as colorless and transparent polycarbonate. As shown in FIG. 1, a scale 12a and numerals 12b are provided on the display panel 12 by printing or the like. Further, as shown in FIG. 2, a through hole 12 c for extending a shaft 13 a of a movement 13, which will be described later, to the surface side of the display panel 12, that is, the driver side, is provided in the substantially central portion of the display panel 12. ing.

  A white light emitting diode 16 that is a light source for transmitting and illuminating the display panel 12 is disposed on the back side of the display panel 12 (the side opposite to the viewing side, the left side in FIG. 2). The light emitting diode 16 is mounted on a printed circuit board 14 that is also disposed on the back side of the display panel 12 and forms an electric circuit portion of the combination meter 100.

  Further, on the back side of the display panel 12, a movement 13 is disposed as a rotating inner unit that rotates the shaft 13a that is a pointer shaft by an angle corresponding to an external electric signal, that is, a detection signal from the speed sensor 3. Has been. The movement 13 is mounted and fixed on the printed circuit board 14. The shaft 13a extends to the surface side (the right side in FIG. 2) through the through hole 12c of the display panel 12, and the pointer 11 is fixed to the tip thereof.

  The pointer 11 is made of a transparent or translucent material such as an acrylic resin or a polycarbonate resin. The pointer 11 guides light from a light source (not shown) outside the pointer 11 to the inside thereof so that the pointer 11 itself is lit and displayed.

  In FIG. 2, an opening 12d is provided below the through hole 12c of the display panel 12, and a liquid crystal panel 21 serving as an indicator is disposed in the opening 12d.

  In the present embodiment, as shown in FIG. 1, the liquid crystal panel 21 is formed with six indicators as segments. That is, there are six overdrive release indicator lamps 25a, door warning lamps 25b, overheat warning lamps 25c, fuel warning lamps 25d, battery voltage warning lamps 25e, and fog lamp lighting indicator lamps 25f. The liquid crystal panel 21 can control the applied voltage independently for each segment, that is, for each of the indicators 25a to 25f.

  The liquid crystal panel 21 in the present embodiment uses a light-shielding property when no voltage is applied and a light-transmitting property when a voltage is applied. That is, the indicators 25a to 25f are entirely black when no voltage is applied, and when a voltage is applied, a predetermined shape formed as a segment is translucent as shown in FIG. FIG. 1 shows a state where a voltage is applied to all the indicators 25a to 25f.

  A plurality of white light emitting diodes 24 are arranged on the back side of the liquid crystal panel 21 (on the side opposite to the viewing side, the left side in FIG. 2) as a back light source that transmits and illuminates the indicators 25a to 25f of the liquid crystal panel 21. These light emitting diodes 24 are also mounted on the printed board 14. The above-described liquid crystal panel 21 is also connected to the printed board 14 by lead wires (not shown).

  Diffusion between the liquid crystal panel 21 and the light emitting diode 24 so that light of the light emitting diode 24 that transmits and illuminates the indicators 25a to 25f of the liquid crystal panel 21 is diffused so that the display of the indicators 25a to 25f does not appear shaded. A plate 22 is arranged.

  A liquid crystal display unit 20 is configured by the liquid crystal panel 21, the diffusion plate 22, and the light emitting diode 24, and a meter display unit 10 is configured by the pointer 11, the display panel 12, the movement 13, the printed board 14, the light emitting diode 16, and the like. .

  Above the meter display unit 10 and the liquid crystal display unit 20, a background display unit 30 for displaying the background of each indicator 25a to 25f displayed on the liquid crystal display unit 20, that is, the background area 36 indicated by a broken line in FIG. Has been placed. Between the liquid crystal display unit 20 and the background display unit 30, a half mirror 40 for displaying the indicators 25a to 25f displayed on the liquid crystal display unit 20 as real images and displaying the background displayed on the background display unit 30 as virtual images is arranged. ing.

  The background (virtual image) display area 36 by the background display unit 30 is an area that covers at least the entire liquid crystal panel 21 serving as a liquid crystal display unit, and may be further enlarged.

  As shown in FIG. 2, the background display unit 30 includes a holding plate 31 having an opening 31a, a red light emitting diode 32r, a yellow light emitting diode 32y, and a green light emitting diode 32g, each of these light emitting diodes 32r, 32y, and 32g. Printed circuit board 33, a diffusion plate 34 that diffuses the light of these light emitting diodes 32r, 32y, and 32g, and a reflector 35 that collects the light of these light emitting diodes 32r, 32y, and 32g on the diffusion plate 34. ing.

  The diffusion plate 34 is disposed above the holding plate 31 and at the opening 31a. The printed circuit board 33 is disposed above the holding plate 31 and adjacent to the diffusion plate 34. The reflector 35 is disposed above the diffusion plate 34.

  As shown in FIG. 2, the printed circuit board 14 is mounted with a control device 15 that controls display / non-display of the indicators 25a to 25f and lighting / extinguishing of the light-emitting diodes 16, 24, 32r, 32y, and 32g. Yes. The control device 15 is composed of a microcomputer or the like, and controls the indicators 25a to 25f and the light emitting diodes 16, 24, 32r, 32y, and 32g in accordance with external electric signals that are input.

  Next, the electrical circuit configuration of the combination meter 100 according to this embodiment will be described with reference to FIG.

  As shown in FIG. 3, power is always supplied from the battery 2 to the control device 15. Further, the ignition switch 1 is connected so that it can detect ON / OFF. In addition, various sensors and switches are connected to the control device 15 so that detection signals thereof can be input. That is, a speed sensor 3, an O / D (auto drive) switch 4, a door switch 5, a water temperature sensor 6, a liquid level sensor 7, a voltage sensor 8, and a fog lamp switch 9 are connected.

  In addition, devices that are driven by the control device 15 in accordance with detection signals from these various sensors 3 and 6-8 and the switches 4, 5, and 9 are connected. That is, the liquid crystal panel 21, the light emitting diodes 16, 24, 32y, 32r, 32g, and the movement 13 are connected.

The meter display unit 10, the liquid crystal display unit 20, the background display unit 30, and the half mirror 40 described above are housed and held in a case 51 as shown in FIG. A resin-made transparent cover 52 is attached to the case 51 on the surface side (the right side in FIG. 2) of the half mirror 40. The transparent cover 52 is formed of a thin plate of transparent polycarbonate resin or the like, and maintains good airtightness in the combination meter 100 (operation)
The operation of this embodiment in the above configuration will be described.

  When the ignition switch 1 is turned on by the driver, the control device 15 detects it and starts operation, the light emitting diode 16 is turned on, and the display panel 12 and the pointer 11 are lit.

  When the overdrive is in use, that is, when the overdrive switch 4 is in the ON state, the overdrive release indicator lamp 25a is not applied with voltage and is not displayed, that is, black. On the other hand, when the overdrive switch 4 is in the OFF state, a voltage is applied to the overdrive release indicator lamp 25a and the light emitting diode 24 is lit. Thereby, in the liquid crystal panel 21, the overdrive release indicator lamp 25a is lit and displayed in white.

  When the door is closed and securely locked, the door switch 5 is turned off, and the door warning lamp 25b is not displayed because no voltage is applied, that is, black. On the other hand, when the door is open for getting on and off the vehicle, or when the door is locked incompletely after the boarding, the door switch 5 is turned on, the door warning lamp 25b is energized, and the light emitting diode 24 is turned on. Illuminated. Thereby, on the liquid crystal panel 21, the door warning lamp 25b is also lit and displayed in white.

  When the temperature of the engine cooling water detected by the temperature sensor 6 is equal to or lower than a predetermined value, the overheat warning lamp 25c is not applied with voltage and is not displayed, that is, is black. On the other hand, when the cooling water temperature exceeds a predetermined value, a voltage is applied to the overheat warning lamp 25c and the light emitting diode 24 is turned on. Thereby, in the liquid crystal panel 21, the overheat warning lamp 25c is also lit and displayed in white.

  When the amount of remaining fuel in the fuel tank (not shown) detected by the liquid level sensor 7 is equal to or greater than a predetermined value, the fuel warning lamp 25d is not applied with voltage and is not displayed, that is, it is black. On the other hand, when the amount of remaining fuel is less than a predetermined value, a voltage is applied to the fuel warning lamp 25d and the light emitting diode 24 is turned on. Thereby, on the liquid crystal panel 21, the fuel warning lamp 25d is also lit and displayed in white.

  When the battery voltage detected by the voltage sensor 8 is equal to or higher than a predetermined value, the battery voltage warning lamp 25e is not applied with voltage and is not displayed, that is, is black. On the other hand, when the battery voltage becomes lower than a predetermined value, a voltage is applied to the battery voltage warning lamp 25e, and the light emitting diode 24 is turned on. Thereby, on the liquid crystal panel 21, the battery voltage warning lamp 25e is also lit and displayed in white.

  When the fog lamp is not lit, that is, when the fog lamp switch 9 is in the OFF state, the fog lamp lighting display lamp 25f is not applied with voltage and is not displayed, that is, it is black. On the other hand, when the fog lamp is lit, that is, when the fog lamp switch 9 is in the ON state, a voltage is applied to the fog lamp lighting display lamp 25f and the light emitting diode 24 is lit. Thereby, on the liquid crystal panel 21, the fog lamp lighting display lamp 25f is also lit and displayed in white.

  For example, when the overdrive release indicator lamp 25a is turned on, white light from the plurality of lighted light emitting diodes 24 is diffused by the diffusion plate 22 and then illuminates the indicator 25a. Only the indicator 25a is lit and displayed in white, and the other indicators 25b to 25f are not lit and displayed. However, the above-mentioned "off-seg is visible" state, that is, a slightly visible state. These lights pass through the half mirror 40 and are displayed as real images.

  Here, since the distance between the liquid crystal panel 21 and the light emitting diode 24 is very short, it is difficult to sufficiently diffuse the light of the light emitting diode 24 only by the diffusion plate 22. Therefore, a plurality of white light emitting diodes 24 are arranged so that the display of each of the indicators 25a to 25f does not appear shaded.

  At this time, only the yellow light emitting diode 32y of the background display unit 30 is turned on, and this yellow light is reflected by the reflector 35 and collected on the diffusion plate 34. The condensed yellow light is diffused by the diffusion plate 34 and then reflected by the half mirror 40 to be displayed as a virtual image. Here, in FIG. 2, the diffusion plate 34 has a directivity, increases the thickness of the holding plate 31, or makes the surface of the opening 31 a of the holding plate 31 appropriate. Designed so that diffused yellow light travels almost straight.

  The real image and the virtual image are recognized by the passenger as overlapping. As a result, in FIG. 1, in the indicator 25a, the white light of the real image and the yellow light of the virtual image 36 are overlapped and displayed with yellow light, but the “off-seg” of the other indicators 25b to 25f is the yellow light of the virtual image 36. Since they overlap, it becomes blurry and difficult to see. As a result, the problem of “off-seg is visible” is solved.

  In addition, the problem is that the end face of the opening frame of the opening 12d shines due to the reflected light from the white light emitting diode 24 and the appearance is poor, as shown in FIG. 1, the virtual image 36 region of yellow light is larger than the opening 12d. Therefore, the “light of the end face” becomes blurred and difficult to see, and this problem is solved. Furthermore, by taking a large virtual image 36 region, it is possible to obtain an effect of calling attention to the occupant (ambient effect).

  Similarly, the fuel warning lamp 25b is lit in yellow, the door warning lamp 25c, the overheat warning lamp 25d and the battery voltage warning lamp 25e are lit in red, and the fog lamp lighting display lamp 25f is lit in green. When the light emission display is in red, only the red light emitting diode 32r of the background display unit 30 is lit, and when the light emission display is in green, only the green light emitting diode 32g of the background display unit 30 is lit.

  As described above, in the present embodiment, the back light source of the liquid crystal display unit 20 is only white, and the yellow, red, and green light sources are arranged in the background display unit 30, so the configuration of the back light source of the liquid crystal display unit 20 is simplified. Can be Further, unlike the case of the liquid crystal display unit 20, the background display unit 30 can increase the distance between the light source and the diffuser plate 34 by using the reflector 35, so that it is not necessary to arrange a plurality of light sources for each color. . Therefore, the configuration of the light source can be simplified as a whole of the liquid crystal display unit 20 and the background display unit 30. As a result, the control device 15 can also be simplified.

  Although the distance between the light source and the diffusion plate 34 is shortened, the reflector 35 may be eliminated. In this case, in FIG. 2, the printed circuit board 33 on which the light emitting diodes 32r, 32y, and 32g are mounted is disposed on the inner surface 38 of the case 51, and the light emitting diodes 32r, 32y, and 32g emit light toward the diffusion plate 34. Even in this case, the distance between the light source and the diffusion plate 34 can be made much longer than when the light emitting diodes 32r, 32y, and 32g are arranged in the liquid crystal display unit 20.

(Second Embodiment)
FIG. 4 is a front view of the colored sheet 37 of the combination meter 1 according to the second embodiment of the present invention, and is a view taken in the direction of the arrow IV in FIG.
In the first embodiment, one red light emitting diode 32r, one yellow light emitting diode 32y and one green light emitting diode 32g are arranged in the background display unit 30, but in the second embodiment, instead of these, white light emission is performed. Using a diode, a translucent colored sheet 37 shown in FIG. 4 is attached to the diffusion plate 34 to obtain a desired emission color.

  The colored sheet 37 is obtained by coloring a thin sheet made of a colorless and transparent resin so as to have translucency. The colored sheet 37 is colored in three colors of yellow, red, and green corresponding to the arrangement of the indicators 25a to 25f formed on the liquid crystal panel 21. That is, as shown in FIG. 4, the yellow portion 37y, the red portion 37r, and the green portion 37g are color-coded. Instead of the coloring sheet 37, a translucent coloring material may be printed on the diffusion plate 34 as shown in FIG.

  In the present embodiment, since only one white light source is arranged on the background display unit 30, in addition to the effects of the first embodiment, the configuration of the light source is further simplified as the entire liquid crystal display unit 20 and the background display unit 30. Can be As a result, the control device 15 can be further simplified. Moreover, the effect that each indicator 25a-25f can be simultaneously displayed by a predetermined color is also acquired.

(Other embodiments)
In the embodiments described above, other indicators may be added or replaced. Further, a plurality of liquid crystal panels 21 may be arranged as necessary. In this case, it is necessary to increase the number of background display units 30 corresponding to the number of liquid crystal panels 21.

  In the above-described embodiment, a light bulb may be used instead of the white light emitting diode 24.

  In the above-described embodiment, each of the indicators 25a to 25f is translucent at the time of display and light-shielding (black) at the time of non-display, but this may be reversed. That is, it may be light-shielding (black) during display and light-transmitting during non-display. In this case, the display states of the indicators 25a to 25f are those obtained by inverting black and white in FIG. Therefore, the displayed indicator is visually recognized in black in the background that emits light with a predetermined emission color.

  Further, the present invention is not limited to an indicator, and the present invention can be applied to a liquid crystal display in general.

  In the above-described embodiment, the background color is changed by the background display unit 30. However, for example, a display reflecting the image of a starry sky may be turned ON / OFF. That is, according to the present invention, the background of the liquid crystal display unit 20 is switched by the background display unit 30, whether the background is a single color or divided into regions of a plurality of colors. May be a pattern.

It is a partial front view of the combination meter 100 by 1st Embodiment of this invention. It is the II-II sectional view taken on the line of FIG. It is a schematic diagram explaining the electric circuit structure of the combination meter 1 by 1st Embodiment of this invention. It is a front view of the coloring sheet 37 of the combination meter 1 by 2nd Embodiment of this invention, and is IV arrow line view of FIG.

Explanation of symbols

100 Combination meter (Vehicle display device)
10 Meter display (other display)
12 Display board (Dial)
12d Opening 15 Control device (control means)
20 Liquid crystal display unit 21 Liquid crystal panel 24 White light emitting diode (light source for transmitted illumination, white light source)
25a-25f Vehicle information (real image)
30 Background display 36 Background (virtual image)
40 half mirror

Claims (7)

A liquid crystal display unit having a liquid crystal panel for displaying first vehicle information and a light source for transmission illumination for transmitting and illuminating the liquid crystal panel;
A background display unit for displaying a background of the first vehicle information;
A vehicle display device, comprising: a half mirror that is disposed between the liquid crystal display unit and the background display unit and displays the first vehicle information as a real image and the background as a virtual image.   The vehicle display device according to claim 1, wherein the background displayed by the background display unit is switchable.   The vehicle display device according to claim 2, wherein the background displayed by the background display unit is a single color.   4. The control unit according to claim 2, further comprising a control unit that switches the background displayed by the background display unit in conjunction with the switching of the first vehicle information displayed by the liquid crystal display unit. 5. Vehicle display device. A second display for displaying second vehicle information using a printed dial;
The vehicle display device according to any one of claims 1 to 4, wherein the first vehicle information is displayed from an opening formed in the dial.   The vehicle according to any one of claims 1 to 5, wherein the virtual image of the background displayed by the background display unit is larger than the real image of the vehicle information displayed by the liquid crystal display unit. Display device.   The vehicle display device according to any one of claims 1 to 6, wherein the light source for transmitted illumination is a white light source.

Images