JP2003344120A - Pointer-type display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointer-type display device which can be formed compactly when virtual image display is adopted. <P>SOLUTION: The display device is provided with a pointer 3 which is rotated by a driving gear 2, a display board (a first panel body) 6 arranged in the rear of this pointer 3, a frame body (a second panel body) 7 arranged around the pointer 3, and a circuit board 1 which is arranged in the rear of the display board 6 and this frame body 7 and operates the driving gear 2. A band-shaped window portion 9 which surrounds the rotation center 31 of the pointer 3 is formed between the display board 6 and the frame body 7. On the front side of the circuit board 1, a virtual image display means composed of a display image forming means comprised of a bent part 63 of the display board 6, and a reflecting means comprised of the third external wall surface 83 of a translucent body 8 is arranged. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pointer type display device mounted on various vehicles represented by, for example, automobiles, motorcycles, ships, agricultural and construction machines, and aircraft.

[0002]

2. Description of the Related Art As a pointer-type display device of this type, for example, Japanese Patent Laid-Open Nos. 2002-114058 and 2002 are known.
As described in JP-A-104019, JP-A-11-183202, and JP-A-8-219814, a rotating needle is used as a real image, and an index portion such as a numeral or a scale corresponding to the pointer is used as a real image. It is known that a virtual image is synthesized and displayed by a half mirror.

According to this structure, since the indicator portion is displayed as a virtual image by the half mirror, the indicator portion is visually recognized with a floating feeling, and thus the pointer-type display is given a novel and high-class appearance. be able to.

[0004]

However, in the structure described in the conventional example, the pointer display unit for forming the pointer image (real image) and the index display unit for forming the index portion image (virtual image) are separately prepared. Further, since the half mirror is arranged between the respective display units, the size of the entire device is increased and the cost is significantly increased. The present invention has been made in view of these points, and a main object of the present invention is to provide a pointer-type display device that can be compact in configuration when a virtual image display is adopted.

[0005]

In order to achieve the above-mentioned object, the present invention provides a pointer which is rotated by a driving device, and a panel body which is arranged behind or around the pointer.
The panel body is provided behind the panel body, and the panel body is provided with a window portion surrounding the center of rotation of the pointer,
A virtual image display unit including a display image forming unit and a reflecting unit for projecting a display image formed by the display image forming unit onto the window portion is provided on the front side of the circuit board.

Further, according to the present invention, a band-shaped light-transmitting body is arranged in the window portion, and the reflecting means is formed from a mirror surface portion formed on a wall surface of the light-transmitting body facing the window portion and the display image forming means. It is characterized by

According to the present invention, the display image forming means is formed at a position facing the mirror surface portion of the translucent body, or as a member separate from the translucent member so as to face the mirror surface portion. It is characterized by being arranged.

Further, the present invention is characterized in that the display image forming means includes a light source and receives the light from the light source to form the display image.

The present invention is also characterized in that the display image comprises an index portion corresponding to the pointer.

Further, the present invention is characterized in that the display image comprises a ring-shaped decorative portion surrounding the rotation center of the pointer.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A case in which the pointer type display device according to the present invention is applied to an automobile instrument will be described below with reference to the accompanying drawings.

1 to 3 show a first embodiment of the present invention, FIG. 1 is a plan view of a pointer type display device, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. FIG. 3 is an exploded perspective view of a main part of the embodiment.

1 and 2, a pointer type display device according to the present embodiment includes a circuit board 1, a driving device 2, a pointer 3, first and second light sources L1 and L2, a case 4, a light guide 5, Display panel (first panel body) 6, frame body (second panel body) 7,
The transparent body 8 is provided.

The circuit board 1 is made of a hard circuit board made of a paper phenol type or glass epoxy type material, and a plurality of wiring patterns (not shown) made of a predetermined copper foil material are formed on the surface thereof. On the wiring pattern, for example, a driving device 2 composed of a stepping motor and light sources L2 and L3 composed of light emitting diodes are mounted and fixed in conduction.

The drive device 2 is mounted on the back side of the circuit board 1, its rotation shaft 21 penetrates the circuit board 1 and projects to the front side, and the pointer 3 is connected to the tip thereof.

The pointer 3 is composed of a rotation center portion 31 connected to the rotation shaft 21 and an indicator portion 32 extending from the rotation center portion 31 in a longitudinal shape along the display plate 6, and the rotation center portion 31 has a light shielding property. The indicator 32 is adapted to introduce light from the light source L1 and emit light.

The case 4 is made of, for example, a white synthetic resin having a high light reflectance, and has a cylindrical portion 41 surrounding the drive shaft 21.
And a reflecting portion 42 corresponding to an index portion of the display plate 6 described later.

The tubular portion 41 is located between the first light source L1 and the rotation center portion 31 of the pointer 3, and guides the light from the first light source L1 to the rotation center portion 31. The light introduced into 31 is reflected by the reflecting portion formed in the rotation center portion 31 to cause the indicating portion 32 to emit light.

The reflecting portion 42 faces the display plate 6 with a space in between, and reflects the light guided into the space S through the light guide 5 to the display plate 6 side. In addition, the reflector 42
Has its ends extending along the bottom of the translucent body 8 and
Is supported from behind.

The light guide 5 is formed of a transparent synthetic resin material in an arc shape surrounding the cylindrical portion 41, and guides the light of the second light source L2 into the space S. The indicator portion, which will be described later, of the display plate 6 is transmitted and illuminated by the light guided therein.

The display plate 6 is formed by printing on a transparent synthetic resin substrate 61, and has a flat plate portion 6 corresponding to the operating range of the pointer 3.
2 and a bent portion (display image forming means) 63 that is formed by bending the flat plate portion 62 in the back direction (circuit board 1 side).

The flat plate portion 62 and the bent portion 63 are shown in FIG.
As also shown, a light-shielding ground portion 64 formed by printing black ink, for example, is formed. Then, on the flat plate portion 62, for example, by appropriately printing a colored ink (for example, white) in a partially removed area where the light shielding ground portion 64 is not formed,
A light-transmissive index portion (first index portion) 65 that forms a number or a character to be designated by the pointer 3 is formed, and the bent portion 63 does not include the light-shielding ground portion 64. For example, by appropriately printing a color ink, a light-transmissive index part (second
Indicator portion) 66 is formed.

The frame 7 is made of, for example, black light-shielding synthetic resin, and is a decorative panel that exposes a required portion of the pointer-type index portion including the pointer 3, the display plate 6, and the translucent body 8 and hides unnecessary portions. Function. A band-shaped window portion 9 surrounding the rotation center portion 31 of the pointer 3 is formed between the frame body 7 and the display plate 6, and the translucent body 8 is housed in the window portion 9.

The translucent body 8 is formed of, for example, a transparent synthetic resin material in a band shape corresponding to the shape of the window portion 9, and its cross-sectional shape is a substantially triangular shape over the entire circumference.

As shown in FIG. 3, the translucent body 8 has a first outer wall surface 81 exposed to the observer side and a second outer wall surface 82 facing the bent portion 63 of the display plate 6. , And a third outer wall surface (wall surface or reflecting means) 83 that faces both the first and second outer wall surfaces, and in this case, at least the third outer wall surface 83 is mirror-finished, It is formed as a mirror surface portion.

Further, as shown in FIG. 1, the light-transmissive body 8 emits light in a ring shape by introducing light from the third light source L3 which is, for example, a light emitting diode.

Next, the emission color of the first light source L1 is red,
The illumination display state of the pointer-type display device according to the present embodiment will be described by taking as an example the case where the emission color of the light source L2 is set to white and the emission color of the third light source is set to blue.

First, when the first light source L1 emits light, the red light is introduced into the pointer 3, and the indicator 32 emits red light.

Next, when the second light source L2 emits light, the white light is guided into the space S through the light guide 5 and passes through both the indicator portions 65 and 66 of the display plate 6, A display image of the index portion 65 (light emission display image) and a display image of the index portion 66 (light emission display image) are formed. The display image of the index portion 65 is visually recognized by the observer as a real image that shines in white, and the display image of the index portion 66 passes through the third outer wall portion 83 of the translucent body 8 to the first outer wall portion 81 side (observation). It is reflected (projected) to the observer's side) and is visually recognized by the observer as a virtual image X that shines white. As a result, the bent portion 63 of the display plate 6 having the indicator portion 66 is combined with the second light source L2 and functions as a display image forming unit that forms a display image that emits light when light passes through this portion. And the third outer wall surface 83 of the translucent body 8
Functions as a reflecting means for projecting the display image of the index portion 66 on the observer side, and these display image forming means and reflecting means constitute a virtual image forming means. Since the virtual image X formed in this way is visually recognized to float in a position deeper than the display image of the index portion 65 in the window portion 9, novelty and a sense of luxury can be produced. .

Next, when the third light source L3 emits light, the blue light is taken into the translucent body 8 and the entire translucent body 8 emits blue light. As a result, the translucent body 3 functions as a decorative ring that surrounds the rotation center of the pointer 3, and the appearance can be improved.

The light sources L1 to L3 may be turned on at the same time, or may be turned on in a predetermined order.

As described above, the pointer type display device according to the present embodiment has the pointer 3 rotated by the drive unit 2.
A display plate (first panel body) 6 arranged behind the pointer 3, a frame body (second panel body) 7 arranged around the pointer 3, the display plate 6 and the frame body 7 and a circuit board 1 arranged behind the band 7, and a band-shaped window 9 surrounding the rotation center 31 of the pointer 3 between the display plate 6 and the frame 7.
Is provided, and the bent portion 63 of the display board 6 is provided on the front side of the circuit board 1.
And a third of the translucent body 8 for projecting the display image formed by this display image forming means onto the window 9.
By providing the virtual image display means composed of the reflecting means formed of the outer wall surface 83, the virtual image display can be performed without increasing the size of the device and significantly increasing the cost as in the conventional case. Can be made compact and cost can be reduced.
Although the window 9 is formed between the display plate 6 and the frame body 7 in this example, it may be provided on either one of the display plate 6 and the frame body 7.

Further, in the present embodiment, the band-shaped light-transmitting body 8, in particular, the light-transmitting body 8 made of an injection-molded body of synthetic resin is arranged in the window 9, and the window 9 of the light-transmitting body 8 and the display image formation. By using the third outer wall surface (mirror surface portion) 83 facing the means (bending portion 63) with the reflecting means, it is possible to use a special material or a member that has been subjected to special processing / treatment. Instead, the reflecting means can be configured, and the material cost can be reduced.

Further, in this embodiment, the translucent body 8 itself is made to emit light of a predetermined color by the third light source L3, so that it is possible to enhance the decorativeness and the appearance.

Further, in this embodiment, the display image forming means is provided integrally with the display plate 6, and the second and third outer wall surfaces 8 of the translucent body 8 are provided.
The display panel 6 and the display panel 6 are arranged opposite to each other. Further, the display image forming means may be formed on, for example, the second outer wall surface 82 of the translucent body 8 by painting, printing, transferring or the like. By doing so, there is an advantage that a dedicated member for forming the display image forming means is unnecessary.

In this embodiment, the display image forming means includes the light source (second light source L2) and receives the light from the light source to form the display image. Can be satisfactorily formed.

Further, in the present embodiment, the display image serving as the virtual image source is the second index portion 66 including the scale corresponding to the pointer 3, but the type of the display image is arbitrary, and for example, the ring surrounding the center of rotation is used. It may be a decorative display, an emblem, or an alarm mark. The display image is preferably set in a strip shape corresponding to the pointer 3 or arranged in a strip shape. By doing so, a balanced appearance can be provided for the rotating pointer 3. .

FIG. 4 is a perspective view of a main part of a light-transmitting body showing a second embodiment of the present invention. In this embodiment, the display plate 6 serving as a display image forming means in the first embodiment is shown. The bent portion 63 is eliminated, and a concave portion 84 having a wedge shape, for example, is formed on the second outer wall surface of the translucent body 8.
When the light is transmitted, a scale-shaped display image having a glittering feeling is formed. As a result, the same effect as that of the first embodiment can be obtained, and at the same time, the display image has a glittering feeling, so that the decorative property can be improved. The shape of the recess 84 is
Any shape can be adopted as long as a virtual image source can be formed by passing light through this portion.

In the first to third embodiments, the translucent body 8 is adopted and the transmissive body 8 is provided with the reflecting means. For example, FIG. 5 shows a third embodiment of the present invention. like,
The reflecting mirror 800 may be arranged in place of the translucent body 8.

[0040]

As described above, according to the present invention, it is possible to provide a pointer type display device which can achieve the initial object and can make the structure compact when adopting the virtual image display.

[Brief description of drawings]

FIG. 1 is a plan view of a pointer-type display device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an exploded perspective view of an essential part of the same embodiment.

FIG. 4 is a perspective view of a main part showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of essential parts showing a third embodiment of the present invention.

[Explanation of symbols]

1 circuit board 2 drive 3 guidelines 4 cases 5 Light guide 6 Display board (first panel body) 7 Frame (second panel) 8 translucent body 9 windows 21 rotation axis 31 Center of rotation 32 Indicator 41 Cylindrical part 42 Reflector 61 synthetic resin substrate 62 Flat plate 63 Bent portion (display image forming means) 63 Light-shielding ground 65 Index part (first index part) 66 Index Part (Second Index Part) 81 First outer wall 82 Second outer wall 83 Third outer wall portion (wall portion, mirror surface portion, reflecting means) 800 reflector L1 first light source L2 second light source (display image forming means) L3 Third light source

Claims (6)

[Claims] 1. A pointer, which is rotated by a drive device, a panel body arranged behind or around the pointer, and a circuit board arranged behind the panel body. A window surrounding the center of rotation of the pointer is provided, and a display image forming unit is provided on the front side of the circuit board.
A pointer-type display device characterized in that a virtual image display means including a reflection means for projecting the display image formed by the display image forming means onto the window portion is provided. 2. A band-shaped light-transmitting body is arranged in the window portion, and the reflecting means is composed of a mirror surface portion formed on a wall surface facing the window portion and the display image forming means of the light-transmitting body. The pointer type display device according to claim 1. 3. The display image forming means is formed at a position facing the mirror surface portion of the translucent body, or is arranged so as to face the mirror surface portion as a member separate from the translucent body. The pointer type display device according to claim 1 or 2, characterized in that. 4. The display image forming means includes a light source, and receives the light from the light source to form the display image. Pointer type display device. 5. The pointer type display device according to claim 1, wherein the display image includes an index portion corresponding to the pointer. 6. The display image comprises a ring-shaped decorative portion surrounding a rotation center of the pointer.
5. The pointer-type display device according to claim 4.