JP2002211275A - Virtual image display meter - Google Patents

Abstract

(57) [Problem] To provide a virtual image display type meter capable of easily and freely changing a design such as graduations and characters displayed on a virtual image and its background. SOLUTION: A semi-transparent half mirror 13 is arranged in a meter case 11 in a state inclined with respect to a viewing direction E, and a virtual image display unit 20 is arranged on a reflection direction Y side of the half mirror 13. The pointer 15 is disposed on the transmission direction X side of the half mirror 13, and the display image of the virtual image display unit 20 reflected on the pointer 15 side by the half mirror 13 is transmitted through the half mirror 13 and is visually observed.
The virtual image display type meter 10 is made to be visually recognizable as a virtual image on the substantially same plane P as the real image of the above. The virtual image display unit 20 is detachably provided on a unit mounting portion 16 of a meter case 11. This virtual image display unit 20 is composed of a design dial 21 and a background display cover 22 which are separately formed, and can be disassembled and assembled freely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a real image of a pointer which is viewed through a half mirror which is inclined with respect to a viewing direction of a viewer, and a scale or a character which is reflected and viewed by the half mirror. The present invention relates to a virtual image display type meter which can be visually recognized by superimposing the virtual image on a virtual image.

[0002]

2. Description of the Related Art FIG. 4 shows a virtual image display type meter of this type. This virtual image display type meter 1 incorporates a semi-transparent half mirror 3 inclined in a viewing direction E in a meter case 2 thereof. A design dial 4 is provided on the reflection direction Y side of the half mirror 3 in the meter case 2.
And the transmission direction X of the half mirror 3
On the side, a pointer 6 that is rotated by the in-meter device 5 is arranged.

The design such as scales and characters of the design dial 4 reflected by the half mirror 3 toward the hands 6 is substantially flush with the actual image of the hands 6 transmitted through the half mirror 3 and viewed. Is visually recognized as a virtual image.

[0004] Similar techniques relating to the virtual image display type meter 1 are disclosed in Japanese Utility Model Laid-Open No. 5-57620 and Japanese Patent Laid-Open No. 6-26.
No. 2,965, JP-A-10-185628, and the like.

[0005]

However, in the conventional virtual image display type meter 1, the design dial 4 for displaying the virtual image and the lamp case 7 which covers the entire design dial 4 from the outside of the meter case 2 are provided. Since it is fixedly attached to the case 2, the design dial 4 is determined in advance with respect to the pointer 6, and the design dial 4 is exchanged to change the design such as graduations and characters displayed as a virtual image and the background thereof. I couldn't have diversity.

Accordingly, the present invention has been made to solve the above-mentioned problem, and provides a virtual image display type meter which can easily and freely change the design such as graduations and characters to be displayed as a virtual image and its background. The purpose is to do.

[0007]

According to a first aspect of the present invention, a semi-transparent half mirror is disposed in a meter case in a state inclined with respect to a viewing direction, and a virtual image is displayed on a reflection direction side of the half mirror. Along with disposing the unit, a pointer is disposed on the transmission direction side of the half mirror, and the display image of the virtual image display unit reflected on the pointer side by the half mirror is visible through the half mirror. A virtual image display type meter which is visually recognized as a virtual image on a substantially same plane as a real image of a pointer, wherein the virtual image display unit is detachably provided on a unit mounting portion of the meter case.

In this virtual image display type meter, since the virtual image display unit is detachably provided on the unit mounting portion of the meter case, the display image (scale) is reflected by the half mirror from the virtual image display unit toward the hands and displayed as a virtual image. And designs such as letters) are easily exchanged.

According to a second aspect of the present invention, there is provided the virtual image display type meter according to the first aspect, wherein the virtual image display unit includes a design dial disposed on a mirror side of the half mirror, and an outer side of the design dial. The design dial and the background display cover are separately formed so that they can be disassembled and assembled freely.

In this virtual image display type meter, the virtual image display unit is composed of a design dial and a background display cover which are separately formed, and can be disassembled and assembled freely. The background can be freely exchanged, and the degree of freedom in combining designs such as scales and characters with the background can be increased. Thereby, the display form of the virtual image display type meter is diversified, and all options can be supported.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a virtual image display meter according to an embodiment of the present invention, FIG. 2 is a perspective view of the meter, and FIG. 3 is an exploded perspective view of a virtual image display unit used in the meter.

As shown in FIG. 1, a virtual image display type meter 10 is provided.
The box-shaped meter case 11 made of resin is provided with the return plate 1 on the opening 31 side of the instrument panel 30 in the driver's seat.
2 is mounted so as to be exposed. The meter case 11 has a predetermined angle (45) with respect to the viewing direction E.
The semi-transparent half mirror 13 is incorporated in a state inclined to (°). In addition, a virtual image display unit 20 is arranged on the reflection direction Y side of the half mirror 13 in the meter case 11, and a pointer rotated by an internal meter (movement) 14 on the transmission direction X side of the half mirror 13. 15 are arranged.

As shown in FIG. 2, a plurality (for example, four) of round holes 16 are formed in a ceiling portion 11a of the meter case 11 as a unit mounting portion. A virtual image display unit 20 is removably attached to a stepped peripheral portion 16a of each round hole 16 via a screw 23 as a fixing means.
The large and small virtual image display units 20 shown in FIG. 2 are, for example, for a fuel gauge, a speedometer, a tachometer, a thermometer, and the like from the left side in FIG.

As shown in FIG. 3, each virtual image display unit 2
0 denotes a disc-shaped design dial 21 placed on the periphery 16 a of the round hole 16 of the meter case 11, and the periphery of the design dial 21 is placed between the periphery 16 a of the round hole 16. A dome-shaped background display cover 22 that covers the outside of the design dial 21 so as to be sandwiched therebetween.

The design dial 21 is formed of a translucent circular flat plate having a design 21a such as scales, characters, and designs. Further, the background display cover 22 is formed of a translucent hemispherical plate in which decoration serving as a background such as a color or a pattern is applied to the entire inner surface. In this manner, the design dial 21 and the background display cover 22 are separately formed and can be disassembled or assembled. That is, when assembling the virtual image display unit 20 including the design dial 21 and the background display cover 22 into the round hole 16 of the meter case 11, the design dial 21 is placed on the peripheral portion 16 a of the round hole 16 of the meter case 11. The peripheral portion is placed, and the peripheral portion 22a of the background display cover 22 is placed on the peripheral portion of the design dial 21.
Is placed on each side of the round hole 16 to form rectangular recesses 16b, 1
6b, the rectangular mounting pieces 22b, 22b on both sides of the background display cover 22 are fitted, and the screw holes 1 of the respective recesses 16b are formed.
6c is assembled by screwing a screw 23 penetrating through the through hole 22c of each mounting piece 22b.

Each virtual image display unit 20 is covered with a lamp case 25 having a light source (not shown) for irradiating the background display cover 22 and the design dial 21 with light. The lamp case 25 is detachably attached to the ceiling 11a of the meter case 11 with screws 26. The virtual image display unit 20 and the lamp case 25 constitute a background display unit. Then, the design 21a such as a scale or a character of the design dial 21 of each virtual image display unit 22 reflected by the background display means and the half mirror 13 toward the pointer 15 is transmitted through the half mirror 13 and is visually observed. The virtual image is visually observed on the substantially same plane P as the real image 15.
In addition, the design 2 by the design dial 21 in the meter case 11
A translucent dial 17 on the pointer 15 side is arranged at the virtual image display position P of 1a. The dial 17 is also provided with designs such as scales and letters, and the design is illuminated by a light source (not shown) in a lamp case 18 attached to the rear side of the meter case 11.

According to the virtual image display meter 10 of the embodiment described above, since the virtual image display units 20 are detachably attached to the respective round holes 16 of the meter case 11, the hands 15 are closer to the hands 15 by the half mirror 13 than the respective virtual image display units 20. By changing each virtual image display unit 20, the design such as graduations and characters which are reflected on the virtual image and displayed as a virtual image can be easily changed.

In particular, as shown in FIG. 3, each virtual image display unit 20 is composed of a design dial 21 and a background display cover 22 which are separately formed so that they can be disassembled or assembled. The dial 21 can be easily replaced, and the background can be freely changed by replacing the background display cover 22. Thereby, the combination of the design dial 21 and the background display cover 22 can be diversified, and the degree of freedom of the display form of the virtual image display type meter 10 can be further improved.

According to the above embodiment, screws are used as fixing means for attaching the virtual image display unit to the unit attaching portion of the meter case. However, the fixing means is not limited to screws. The virtual image display unit may be detachably attached to the unit attachment portion by forming a fixing means by a nut embedded in the nut and a bolt screwed to the nut.

[0021]

As described above, according to the first aspect of the present invention, since the virtual image display unit is detachably provided in the unit mounting portion of the meter case, the virtual image display unit is reflected toward the hands by the half mirror from the virtual image display unit. Thus, it is possible to easily change designs such as scales and characters displayed as virtual images.

According to the second aspect of the present invention, the virtual image display unit is constituted by the separately formed design dial and the background display cover and can be disassembled and assembled freely, so that the design dial can be easily replaced. And the background can be freely changed. Thereby, the degree of freedom of the combination of the design dial and the background can be increased.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a virtual image display type meter according to an embodiment of the present invention.

FIG. 2 is a perspective view of the virtual image display meter.

FIG. 3 is an exploded perspective view of a virtual image display unit used in the virtual image display meter.

FIG. 4 is a sectional view of a conventional virtual image display type meter.

[Explanation of symbols]

 Reference Signs List 10 virtual image display type meter 11 meter case 13 half mirror 15 pointer 16 round hole (unit mounting portion) 20 virtual image display unit 21 design dial plate 22 background display cover E viewing direction Y reflection direction X transmission direction P substantially the same plane

Claims (2)

[Claims] 1. A semi-transparent half mirror is disposed in a meter case in a state inclined with respect to a viewing direction, a virtual image display unit is disposed on a reflection direction side of the half mirror, and a transmission of the half mirror is performed. Place the pointer on the direction side,
A virtual image display type in which the display image of the virtual image display unit reflected on the pointer side by the half mirror is viewed as a virtual image on substantially the same plane as the real image of the pointer transmitted through the half mirror and viewed. A virtual image display meter, wherein the virtual image display unit is detachably provided on a unit mounting portion of the meter case. 2. The virtual image display meter according to claim 1, wherein the virtual image display unit includes a design dial disposed on a mirror surface of the half mirror, and a background display cover that covers the outside of the design dial. The design dial and the background display cover are separately formed so that they can be freely disassembled and assembled.