JPH03266729A - Display device for vehicle - Google Patents

Abstract

PURPOSE:To improve the visibility by disposing a display device having an indicating needle correspondence display portion and a light emitting indicating needle in front and rear of a half mirror intersecting the visual confirming direction of a driver, and attaching a display portion adapted to overlap-display with a higher brightness than that of the light emitting indicating needle to the display device. CONSTITUTION:When an ignition switch is turned on, an illumination lamp 11 and a cold cathode tube 18 are respectively lighted, and an indicating light 25 of a light emitting indicating needle 10 penetrates a half mirror 5, whereby the transmitted light is visually confirmed as a real image by a driver. An indicating light 26 of the display device 16 is reflected by the half mirror 5, so that the reflected light is visually confirmed as a virtual image by the driver. Accordingly, the driver can visually confirm a scale indicating the display content of a display plate 17, an indicating needle correspondence display portion comprising numerals 28, a car velocity display portion 29 indicating the display contents of the respective display elements 23, 24, a trip display portion 30 and an indicating needle 10 at the same time. Further, when a warning lamp 21 is lighted, a warning display portion 31 is visually confirmed as a virtual image.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device for a vehicle that displays a combination of a virtual image and a real image using a half mirror having transmissive and reflective properties.

[Conventional technology]

In general, display devices using half mirrors are
As disclosed in the dial display device proposed in Japanese Patent No. 126143, two types of display boards are arranged symmetrically on both sides of a half mirror, and when the display board in front of the half mirror is illuminated, this display board is displayed as a virtual image by the reflection of the display light, and when the display plate behind the half mirror is illuminated, the scale plate is displayed as a real image by the transmission of the display light. Such a display device was also developed for use in vehicles, for example, in Japanese Patent Application Laid-Open No. 63-23204.
A vehicle display device disclosed in Publication No. 2 is known, and this includes an analog display device having a display surface positioned toward the viewing direction in the passenger compartment of a vehicle, and a display device having the display surface facing the display surface of the display device. A liquid crystal panel arranged to cross directions, a half mirror provided on the other surface of the analog display device of this liquid crystal panel, and a digital display device having a display surface located opposite to this half mirror. , a switching means for switching the liquid crystal panel to a transparent state or a non-transparent state, and by setting the liquid crystal panel to a transparent state, display contents of the analog display device can be viewed as a real image through the half mirror and the liquid crystal panel, By making the liquid crystal panel non-transparent, the content displayed on the digital display device can be visually recognized as a virtual image on the half mirror. The analog display device includes a pointer provided on the meter body and a dial plate having a display section corresponding to the pointer such as a scale and numbers.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, when the liquid crystal panel is in a transparent state, the pointer of the analog display device and the pointer-corresponding display section of the dial are combined so that they can be visually recognized as a real image. The illumination light from the analog display device is obstructed by the instrument body, etc., making it difficult to reach the entire dial display area uniformly, which tends to result in uneven brightness of the pointer display area, and the pointer and pointer display area overlap each other. In this case, the pointer-corresponding display portion of the dial is covered by the pointer and becomes invisible, creating a risk of misunderstanding the displayed content.

Therefore, the present invention is a vehicle display device that uses a half mirror to display a combination of a virtual image and a real image, which makes it easy to equalize the brightness of the pointer-compatible display section, and also enables highly visible overlamp display. The purpose is to provide

[Means to solve the problem]

The vehicle display device of the present invention includes a half mirror provided in the passenger compartment of the vehicle so as to intersect with the visual direction of the driver.
A light-emitting pointer provided on the instrument body is provided behind the half-mirror facing the viewing direction, and a display device having at least a pointer-compatible display section is provided in front of the half-mirror and facing the half-mirror. It has a display section that displays an overlapping display at a brightness higher than that of the light emitting pointer.

[Effect]

With the above configuration, the driver can see the display contents of the display device as a virtual image by reflecting the display light of the display device on the half mirror, and at the same time, the driver can see the display contents of the display device as a virtual image by the display light of the light emitting pointer passing through the half mirror. The light emitting pointer can be visually recognized as a real image in combination with the display contents.

Further, when the light-emitting pointer and the display section of the display device are displayed in an overlapping manner, the display sections are clearly visible in an overlapping display state. Furthermore, since the pointer-corresponding display section is displayed as a virtual image, the brightness of the pointer-corresponding display section can be easily made uniform without being hindered by the analog meter body.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 5 show an embodiment of the present invention, and as shown in the figures, a display device 2 is equipped on an instrument panel 1 provided in front of the driver's seat in the cabin of a vehicle. There is. This display device 2 includes a cylindrical case 3 made of an opaque material having a relatively high light absorption color such as black, and the case 3 is provided with a front opening 4 serving as a viewing window. It is divided into front and rear parts. A half mirror 5 is provided inside the case 3 so as to divide the inside of the case 3 into a front chamber and a rear chamber, and the half mirror 5 intersects the driver's visual direction at an angle of, for example, 45 degrees. is leaning backwards. A blinding plate 6 is provided at the rear of the half mirror 5 toward the viewing direction, and this blinding plate 6 has a color with a high light absorption rate, such as black, as a whole, and is designed to close the rear opening of the case 3. It is well arranged.

An instrument case 7 is provided on the rear surface of the blind plate 6, and an analog instrument body 8, such as an engine tachometer, is housed and fixed in the instrument case 7. A light emitting pointer 10 is provided on the front side of the blind plate 6. The light emitting pointer 10 is made of a transparent material such as synthetic resin and is colored, and the illumination light from the illumination lamp 11 provided inside the instrument case 7 is transmitted to the light guide 1.
It is configured to emit light by being guided through the light source 2. In addition, an appropriate number of openings 13 for displaying pointers and openings 14 for warning display are provided in the earthen wall of the case 3 located in front of the half mirror 5, and in this example, one opening 13 is provided. It has a large opening 13 and three small openings 14, each opening 13.14 having a peripheral wall 15 formed therein. A display device 16 provided with a display surface facing the half mirror 5 is located outside the opening 13.14.
The display device 16 includes a display board 17 which is provided corresponding to the opening 13 and has a display section corresponding to the pointer such as a scale and numbers that are transmitted and illuminated, and a display board 17 which is provided above the display board 17. It has a lighting case 19 for illuminating the display panel 17 with cold cathode tubes 18. Furthermore, the display device 16 includes a warning lens 20 for direction indication, headlight, etc. provided corresponding to the opening 14, and a warning case for illuminating and displaying the warning lens 20 with a warning lamp 21. 22. The illumination lamp 11 and the cold cathode tube 18 are turned on by power supplied from the battery when the ignition switch is turned on, and the warning lamp 21 is turned on based on a signal from a control means (not shown) depending on the driving situation. Further, the display board 17 is provided with a display element 23 such as a liquid crystal that digitally displays the vehicle speed, and a display element 24 such as a liquid crystal that digitally displays the distance traveled.
It is illuminated by Furthermore, the brightness of each display section illuminated by the cold cathode tube 18 is set to be higher than the brightness of the light emitting pointer 10 illuminated by the illumination lamp 11.

Next, the operation of the above structure will be explained.

First, when the ignition switch is turned on, the illumination lamp 11 and cold cathode tube 18 are turned on, and the display light 25 of the light emitting pointer 10 passes through the half mirror 5 and is guided toward the driver as shown in FIG. The driver can visually recognize the light emitting pointer 10 as a real image as shown in FIG. 4, and the display light 26 of the display device 16 is reflected by the half mirror 5 and guided to the driver side as shown in FIG. By doing so, the driver can visually recognize the display contents on the display device 16 as a virtual image as shown in FIG. As a result,
As shown in FIG. 2, the driver can read the scale 27. A pointer corresponding display section consisting of numerals 28, and a vehicle speed display section 29. which shows the display contents of the display elements 23.24. The trip display section 30 and the pointer 10 can be visually recognized at the same time. Further, the pointer 10 operates based on the engine rotation signal from the control means, and the scale 27. As shown in FIG. 2, the warning lamp 21 lights up based on the warning signal from the control means to display the warning display section 31 which indicates the display contents of the warning lens 20. It is visually recognized as a virtual image. In addition, if the pointer 10 overlaps the number 28 or the vehicle speed display section 29, the number 28 or the vehicle speed display section 29 will overlap as shown in FIG.
are clearly overlapped and displayed with higher brightness than the pointer 10.

In this manner, in the above embodiment, the light-emitting pointer 10 is visually recognized as a real image, and at the same time, the scale 27, which is the pointer-corresponding display section.
Since the structure is such that the number 28 etc. can be visually recognized as a virtual image 7, the scale 27. The illumination light that illuminates the numeral 28 is not obstructed by the analog instrument body and the scale 27. The uniform brightness of number 28 is the product.

Moreover, when the number 28 and the pointer 10 match, the number 28 is displayed as a virtual image overlapping with a higher brightness than the real image of the pointer 10.
Can be clearly seen without being hidden by the guideline 10
Similarly, when the vehicle speed display section 29 matches the vehicle speed display section 2, the vehicle speed display section 2
9 is clearly displayed in an overlapping manner, thereby preventing misreading due to the displayed content being hidden by the pointer.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, although the display section corresponding to the pointer as a real image and the pointer as a virtual image in one type of meter has been described, it can be similarly used for multiple types of meters. In addition, the display section corresponding to the pointer is a scale.

Symbols etc. may be used in addition to numbers. In addition, although the explanation has been made with the pointer, numbers, and vehicle speed display overlapping, the display contents to be displayed in an overlapping manner may be arbitrarily selected6.
The digital display element can also be omitted. Further, the inclination angle of the half mirror may be selected appropriately, and when the half mirror is tilted forward, the display device may be provided below.

〔Effect of the invention〕

The present invention provides a half mirror in the passenger compartment of a vehicle that intersects with the visual direction of the driver, a light-emitting pointer provided on an instrument body facing the visual direction behind the half mirror, and A display device having at least a display section corresponding to the pointer is provided opposite to the half mirror, and this display device has a display section that displays an overlamp display at a brightness higher than that of the light emitting pointer.
It is possible to provide a display device for a vehicle in which a combination of a virtual image and a real image is displayed using a display device, in which the brightness of a pointer-corresponding display section can be easily made uniform, and an overlap display with high visibility can be performed.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a schematic explanatory diagram, FIG. 2 is a front view showing a display state, and FIG. 3 is a partially enlarged view showing an overlap display state. FIG. 4 is an explanatory diagram showing a pointer visually recognized as a real image, and FIG. 5 is an explanatory diagram showing display contents visually recognized as a virtual image. 5.-Half mirror- 8-Instrument body 10-・Light-emitting pointer 16--Display device \ \ 1 figure! 2 Figure 27 - Scale (pointer corresponding display section) 28 - Number (pointer corresponding display section)

Claims (1)

[Claims] (1) A half mirror is provided in the passenger compartment of the vehicle so as to intersect with the driver's visual direction, and behind the half mirror there is provided a light-emitting pointer provided on the instrument body facing the visual direction, and in front of the half mirror. A display device for a vehicle, characterized in that a display device having at least a pointer-corresponding display section is provided opposite to the half mirror, and the display device has a display section that displays an overlapping display at a brightness higher than that of the light-emitting pointer. .