JP2001356718A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which can inexpensively provide color variations. SOLUTION: When first and second monochromatic displays 3 and 6 are simultaneously made to emit light, all of the display image of the first display color and the display image of the second display color overlap on each other. Consequently, the display images of the display colors varying in the first display color and the second display color are visually recognized from a driver's seat side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly to a display device having a light-emitting monochrome display.

[0002]

2. Description of the Related Art Conventionally, as a display device of this type, there is a combination meter provided in a vehicle as shown in FIG. 3, for example. FIG. 3A is a sectional view of the combination meter, and FIG. It is the front view. In the figure, on the front side of the meter case 1, for example, a water temperature display 2a for displaying the temperature of the engine cooling water, a rotation speed display 2b for displaying the engine speed, and a speed display 2c for displaying the vehicle speed are shown from the right. Each is attached. Further, an opening of the meter case 1 is provided with a front glass 4 for protecting the indicators 2a to 2c.

As shown in FIG. 3A, the indicators 2a to 2c include a pointer 21, a display plate 22 on which scales, numerals, and characters are formed, and a movement 23 for driving the pointer 21. Each has it. On the front side of the meter case 1, in addition to the indicators 2a to 2c, various warning states such as an unfastened state of a seat belt, a locked state of a parking brake, and a half-door state are provided. A warning indicator 3 for displaying a corresponding symbol mark, a warning message, and the like is attached.

[0004] The warning display 3 is illuminated to display the symbol mark and the warning message when a warning state occurs and the display plate 31 formed by printing or cutting out the above-mentioned symbol mark and the warning message. And a light emitting diode 32. That is, the warning display 3 is a monochrome display on which a symbol mark and a warning message are displayed in the color of light emitted from the light emitting diode 3.

[0005]

By the way, conventionally,
There is a demand for increasing the commercial value by adding a color variation or increasing the number of display colors to a monochrome display such as the warning display 3 described above. Therefore, for example, it is conceivable to use a full-color liquid crystal display as the display, but the full-color liquid crystal display is very expensive and has a problem in cost.

Accordingly, a first object of the present invention is to provide a display device capable of providing a color variation at a low cost, focusing on the above problems.

Another object of the present invention is to provide a vehicle display device capable of increasing the number of display colors at low cost.

[0008]

According to a first aspect of the present invention, there is provided a light transmitting / reflecting member having a reflecting surface directed to a driver's seat side, and a first display. A first monochrome display disposed at a position that emits light in a color and transmits the display light from behind the light transmissive reflection member to the driver's seat side, and a second monochrome display that is different from the first display color. And a second monochrome display arranged at a position where the display color reflects toward the driver's seat side on the reflection surface of the light-transmissive reflection member, and the first and When the second monochrome display emits light simultaneously, the display image of the first monochrome display and the display image of the second monochrome display overlap completely.

According to the first aspect of the invention, when the first monochrome display emits light alone, the light is transmitted from behind the light-transmitting reflecting member to the driver's seat side. As a result, the first
Is displayed on the driver's seat side. When the second monochrome display emits light alone, the light is reflected toward the driver's seat side by the reflection surface of the light transmitting reflection member. As a result, the display image of the second display color becomes visible from the driver's seat side. When the first and second monochrome display devices emit light simultaneously, the display image of the first display color and the display image of the second display color all overlap. As a result, both the first display color and the second display color
Is displayed from the driver's seat side.

Therefore, the display image of the first display color displayed when the first monochrome display emits light alone and the second monochrome display alone can be used without using a liquid crystal display capable of performing full color display. A display image of a second display color displayed when the light is emitted, and a display color different from the first display color and the second display color displayed when the first and second monochrome displays are simultaneously displayed. Three color variations of the display image can be provided.

According to a second aspect of the present invention, there is provided the display device according to the first aspect, wherein, of the first and second monochrome displays, a single light emission of the one in which the display image is visually recognized in a near field. When,
A display device includes a switching unit that switches between simultaneous light emission with the first and second monochrome display devices.

According to the second aspect of the present invention, when the display image of the first monochrome display and the display image of the second monochrome display are superimposed, the display image visually recognized in the near field becomes the first image. Focusing on the fact that the display image is visually recognized as a display color different from both the display color and the second display color, the switching unit selects one of the first and second monochrome display devices whose display image is viewed in a near field. Is switched between single light emission and simultaneous light emission with the first and second monochrome displays. Therefore, according to the switching of the display color, the display image does not appear near or far.

According to a third aspect of the present invention, there is provided the display device according to the second aspect, wherein a headlight switch for turning on and off a headlight is used as the switching means.

According to the third aspect of the present invention, the switching means switches the first and the second in accordance with the turning on and off of the headlight.
Of the monochrome display of which the display image is visually recognized in the near field, and simultaneous emission with the first and second monochrome displays. Therefore, it is possible to automatically change the display color of the display image according to the on / off state of the headlight.

According to a fourth aspect of the present invention, there is provided a light transmitting / reflecting member having a reflecting surface directed to a driver's seat, a light emitting display in a first display color, and A first monochrome display disposed at a position where the display light is transmitted from behind the light-transmissive reflection member to the driver's seat side, and a light-emitting display in a second display color different from the first display color And
And a second monochrome display disposed at a position where the display light reflects toward the driver's seat side on the reflection surface of the light-transmissive reflection member, wherein the first and second monochrome displays are simultaneously displayed. When the light is emitted, a part of the display image viewed in the near field and at least a part of the display image viewed in the distance among the display images of the first and second display devices overlap each other. The present invention is characterized by a display device.

According to the fourth aspect of the present invention, the first and
When the second monochrome display emits light simultaneously, light from the first monochrome display passes through the light-transmissive reflective member.
On the other hand, light from the second monochrome display is reflected toward the driver's seat side by the reflection surface of the light-transmitting reflection member. Then, when a part of the display image viewed in the near field and at least a part of the display image viewed in the distance overlap with each other among the display images of the first and second display devices, the display image is displayed. The overlapping part of
The display colors different from both the first display color and the second display color are visually recognized, and the non-overlapping portions are visually recognized in the respective display colors.

Therefore, in addition to the first display color or the second display color, a display color different from both the first display color and the second display color can be visually recognized, and a full-color liquid crystal display device is used. And display colors can be increased.

According to a fifth aspect of the present invention, there is provided the display device according to the fourth aspect, wherein the first and second monochrome display devices emit light simultaneously. A display device is characterized in that a part of a display image viewed in a near field and an entire display image viewed in a distance overlap among display images.

According to the fifth aspect of the present invention, when the display image of the first monochrome display and the display image of the second monochrome display are superimposed, a part of the display image viewed in the near field becomes Paying attention to the fact that the image is visually recognized with a display color different from both the first display color and the second display color, among the display images of the first and second display devices,
A part of the display image viewed in the near field is overlapped with the entire display image viewed in the distance. Therefore, it is possible to visually recognize the display image of the near field in two display colors without visually recognizing the display image that is viewed in the distance.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a combination meter as a display device of the present invention. In the figure,
The same parts as those of the conventional display device described above with reference to FIG. 3 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 1, a half mirror 5 as a light-transmitting reflecting member is disposed between the warning indicator 3 and the front glass 4 with its reflecting surface facing the driver's seat. I have. In addition, a warning indicator 6 is provided on the upper part of the meter case 1 with the display surface facing the reflection surface of the half mirror 5.

As shown in FIG. 2 (a), the warning indicator 3 is formed by printing or cutting out a symbol mark for warning of a half-door state and a warning text such as "the door is open". And a blue light-emitting diode 32 that emits blue light, for example, as a first display color.

The warning display 6 has the same symbol mark as the display panel 31 of the warning display 3 and the display panel 61 on which the warning text is formed, and the second display color different from the first display color. For example, it comprises a red light emitting diode (not shown) that emits red light.

The above-described blue light emitting diode 32 and red light emitting diode are connected to a light switch for turning on and off a headlight (not shown). When the headlight is turned on by the light switch, only the blue light emitting diode 32 emits light according to the half-door state. On the other hand, when the headlight is turned off, the blue light emitting diode 32 and the red light emitting diode emit light simultaneously according to the half-door state.

The operation of the display device having the above configuration will be described below. First, when the headlights are in the half-door state while in the off state, the blue light emitting diode 32 emits light,
The display panel 31 of the warning display 3 is turned on. Warning indicator 3
Is transmitted from behind the half mirror 5 to the driver's seat side. As a result, on the driver's seat side, the real image of the display panel 31 is visually recognized in blue.

On the other hand, when the light switch is turned on and the headlight is turned on and the door is in the half-door state, the blue light emitting diode 31 and the red light emitting diode 31 are turned on.
And emit light simultaneously. Therefore, the display board 31 of the warning display 3 and the display board 61 of the warning display 6 are simultaneously turned on.

Therefore, the light from the warning indicator 3 is transmitted from behind the half mirror 5 to the driver's seat side as described above, and a real image of the display plate 31 which emits blue light is projected to the driver's seat side. On the other hand, the light from the warning display 6 is reflected by the reflection surface of the half mirror 5 to the driver's seat side, and a virtual image 61 'of the display panel 61 which emits red light is projected to the driver's seat side.

The warning display 3 and the warning display 6 are composed of a real image of the display panel 31 and a virtual image 61 'of the display panel 61.
Are provided so as to completely coincide with each other.
The warning indicator 6 is a virtual image 61 'of the display panel 61.
Are provided so as to appear farther than the real image of the display panel 31. Therefore, a red virtual image 61 ′ of the display panel 61 is projected from behind the blue real image of the display panel 31, and the real image of the display panel 31 is visually recognized in purple on the driver's seat side.

Accordingly, the real image of the display panel 31 of the warning display 3 can be switched between red and purple according to the turning on and off of the headlight, and two types of inexpensive without using a full-color liquid crystal display. You can enjoy color variations.

In the first embodiment described above, the single light emission of the blue light emitting diode 32 and the simultaneous light emission of the blue light emitting diode 32 and the red light emitting diode are switched according to the on / off state of the headlight. However, for example, the single light emission of the red light emitting diode and the simultaneous light emission of the blue light emitting diode 32 and the red light emitting diode may be switched.

With the above switching, when the red light emitting diode emits light alone, the virtual image 61 'of the display panel 61 displayed in red is visually recognized. On the other hand, when the blue light emitting diode 32 and the red light emitting diode emit light simultaneously, a real image of the display panel 31 displayed in purple is visually recognized. Therefore, when the display color is changed, the virtual image 61 'that is viewed as if it is far away is switched between the near image and the real image 61', and when the display color is changed, the user feels uncomfortable.

Therefore, as described above, switching is made between the single light emission of the blue light emitting diode 32 and the simultaneous light emission of the blue and red light emitting diodes, that is, of the warning display 3 and the warning display 6, By switching between single light emission and simultaneous light emission where the image is viewed in the near field,
It is preferable that the visually recognized image is always a real image or a virtual image even when the display color is switched.

Second Embodiment A second embodiment of the present invention will be described below. FIG.
FIG. 1 is a diagram showing a combination meter as a display device of the present invention. In the figure, the detailed description of the parts described in the first embodiment is omitted.

In the second embodiment, the display board 31 of the warning display 3 is formed by printing or cutting out the symbol mark and the warning text shown in FIG. 2A as described above. On the other hand, the warning indicator 6 has only the same symbol mark as that formed on the display plate 31.
The blue light emitting diode 32 and the red light emitting diode are connected to a half door detecting sensor (not shown), and when the half door detecting sensor detects the half door state, the blue light emitting diode 32 and the red light emitting diode emit light simultaneously. It has become.

The operation of the display device having the above configuration will be described below. First, when the half-door detection sensor detects the half-door state of the vehicle, the blue light emitting diode 32 and the red light emitting diode emit light simultaneously, and the display panel 31 and the display panel 6
1 are lit at the same time.

Accordingly, the light from the warning display 3 is transmitted from behind the half mirror 5 to the driver's seat side, and a real image of the display panel 31 which emits blue light is projected to the driver's seat side. On the other hand, the light from the warning display 6 is reflected by the reflection surface of the half mirror 5 toward the driver's seat, and the virtual image 6 of the display panel 61 that emits red light.
1 'is projected to the driver's seat side.

By the way, the warning display 3 and the warning display 6 are composed of a real image of a symbol mark portion formed on a part of the display plate 31 and a virtual image 61 ′ of the symbol mark formed on the display plate 61. They are provided so as to completely coincide with each other and overlap.

The warning indicator 6 is provided such that the virtual image 61 'of the display panel 61 is seen farther than the real image of the display panel 31. For this reason, a virtual image 61 ′ of the red symbol mark formed on the display panel 61 is projected from behind the real image of the blue symbol mark formed on the display panel 31. As a result, on the driver's seat side, the real image of the display board 31 is visually recognized with the symbol mark being purple and the warning text being blue.

Therefore, a part of the real image of the display panel 31 and the whole of the virtual image 61 'of the display panel 61 are overlapped, and the real image of the display panel 31 is displayed in two colors. The display colors can be increased inexpensively without using them.

In the second embodiment described above, the display panel 6
Although the entirety of the virtual image 61 ′ and a part of the real image of the display panel 31 are superimposed, for example, if a part of the virtual image of the display panel 61 and a part of the real image of the display panel 31 are superimposed, the display color can be changed. Three colors can be used. However, even if it can be displayed in three colors, some colors are visually recognized as a virtual image that is visually recognized in the distance. Therefore, as described above, the virtual image 6 of the display panel 61
1 'and a part of the real image of the display panel 31 are superimposed. That is, the warning display 3 and the warning display 6
Of the images, a part of the image viewed in the near field and the entire image viewed in the distance overlap so that the real image or
It is preferable that the virtual image be displayed in two colors.

In the above-described embodiment, the warning indicator 3
Is installed behind the half mirror 3, and the display light from the warning display 3 is transmitted directly to the half mirror 3 so that the real image of the display panel 31 can be visually recognized from the driver's seat side. However, for example, the display light of the warning display 3 is once reflected by a reflecting member such as a mirror, and then transmitted from behind the half mirror 3 to the driver's seat side so that the display plate 31 can be visually recognized from a distance. In this way, the virtual image of the display panel 31 may be visually recognized.

[0042]

As described above, according to the first aspect of the present invention, the first monochrome display which is displayed when the first monochrome display emits light without using a liquid crystal display capable of performing full color display. Display image, a display image of a second display color displayed when the second monochrome display emits light alone, and a display image of the first and second monochrome display simultaneously displayed. Since three color variations of a display image having a display color different from the first display color and the second display color can be provided, a display device capable of providing the color variation at low cost can be obtained.

According to the second aspect of the present invention, the displayed image does not appear in the near field or in the distant field according to the switching of the display color, so that the two color variations can be enjoyed without a sense of incongruity. And a display device that can perform the display.

According to the third aspect of the present invention, the display color of the display image can be automatically changed in accordance with the turning on and off of the headlight, so that a display device which is easy to use and has an improved commercial value can be obtained. Can be.

According to the fourth aspect of the invention, in addition to the first display color or the second display color, a display color different from the first display color and the second display color can be visually recognized. Since the number of display colors can be increased without using a full-color liquid crystal display, a display device capable of increasing the number of display colors at low cost can be obtained.

According to the fifth aspect of the present invention, the display image that is viewed in the near field can be viewed in two display colors without the display image that is viewed far away being viewed. A display device that allows users to enjoy display images of various display colors.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating one embodiment of a display device of the present invention.

FIG. 2 is a diagram showing a display panel of a warning indicator.

3A and 3B are a cross-sectional view and a front view illustrating an example of a conventional display device.

[Explanation of symbols]

 5 Light transmissive reflective member (half mirror) 3 First monochrome display (warning display) 6 Second monochrome display (warning display)

Claims (5)

[Claims] 1. A light-transmissive reflective member having a reflective surface directed to a driver's seat side, emitting light in a first display color, and transmitting the display light from behind the light-transmissive reflective member to the driver's seat side. A first monochrome display disposed at a position where light is emitted, a second display color different from the first display color emits light, and the display color is operated on the reflection surface of the light-transmissive reflection member. A second monochrome display disposed at a position reflecting toward the seat side, wherein when the first and second monochrome displays emit light simultaneously, a display image of the first monochrome display; A display device, wherein the whole of the display image of the second monochrome display overlaps with the display image. 2. The display device according to claim 1, wherein, of the first and second monochrome display devices, a single light emission in which the display image is visually recognized in a near field is provided, and the first and second monochrome display devices are used as the first and second monochrome display devices. A switching device for switching between simultaneous light emission with a second monochrome display. 3. The display device according to claim 2, wherein a headlight switch for turning on / off a headlight is used as the switching unit. 4. A light-transmissive reflective member having a reflective surface directed to a driver's seat, light-emitting display in a first display color, and the display light is transmitted from behind the light-transmissive reflective member to the driver's seat side. A first monochrome display disposed at a position where light is emitted and displayed in a second display color different from the first display color, and the display light is operated on a reflection surface of the light transmissive reflection member. And a second monochrome display disposed at a position reflecting toward the seat side, wherein when the first and second monochrome displays emit light simultaneously, the first and second displays are displayed. A display device wherein a part of a display image viewed in a near field and at least a part of a display image viewed in a distant place overlap among images. 5. The display device according to claim 4, wherein, when the first and second monochrome display devices emit light simultaneously, the display image of the first and second display devices is close to each other. A display device, wherein a part of a display image viewed in a field and an entire display image viewed in a distance overlap.