JP2002257597A - Pointer type indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pointer type indicator capable of expanding a light emitting area. SOLUTION: This pointer type indicator has a pointer 4 for rotating around a shaft by a driving member 3, and a dial 5 for forming a measured value display part 55 such a graduations and characters corresponding to the pointer 4. The pointer 4 is provided with an indicating part 41 extending lengthwise in response to the measured value display part 55, and a first light source (a light emitting part) L1 for illuminating a plate surface of the dial 5 by rotating together with the indicating part 41. A reflecting part (a reflecting means) 56 for forming a light emitting area R1 by diffusing and introducing the light from the first light source L1, is arranged in an area corresponding to at least the first light source L1 of the dial 5.

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 which is mounted on various moving bodies such as motorcycles and automobiles and displays a predetermined measured value in a pointer type, and more particularly to a lighting structure thereof. is there.

[0002]

2. Description of the Related Art For example, as a display device mounted on various vehicles, there is provided a pointer which rotates around an axis by a predetermined driving member, and a scale plate provided with a measured value display section corresponding to the pointer. 2. Description of the Related Art There is known a display device that displays a measured value display portion on a scale plate in a pointer-type manner with a rotating pointer. Many of the pointer type display devices of this kind are configured such that a longitudinal indicator provided on the pointer emits light linearly through a light source as appropriate, and the measured value display unit also has a dedicated light source or pointer corresponding thereto. The backlight is illuminated through the same light source as the light source to be illuminated, and the indicator-type display unit including the indicator indicating unit and the measured value display unit of the scale plate emits light in this manner, for example, around the night or the like. To ensure visibility in the dark.

By the way, in such a light emitting type pointer type display device, a light emitting portion which illuminates the surface of the scale plate while rotating together with the indicating portion is provided on the hands, and the light emitting portion serves as an indicator for the indicating portion. Some illuminate a scale plate area located in the periphery to reflect and emit light so that a predetermined area of the scale plate becomes darker as the distance from the indicator increases.
In Japanese Patent Application Laid-Open No. 2000-186947 and Japanese Patent Laid-Open No. 2000-186947, a tail of light such as afterglow (radar emission) that becomes darker as the pointer moves away from the indicator is formed on the scale plate after the movement of the pointer.
Thus, a pointer-type display device that expresses a so-called radar image is shown.

[0004]

However, in the pointer type display device disclosed in each of the above publications, a high-brightness colored layer made of light blue or white is formed in the scale plate region corresponding to the light emitting portion of the pointer. As compared with a black colored layer which is usually used as a ground color layer, the light absorbing effect of the colored layer is small, and relatively bright reflected light can be emitted. The light-emitting area is simply a pointer halation (reflection)
As described above, it is easy to be limited to a spot or near the indicator, and there is a limit in securing a sufficient light emission length particularly in a direction away from the indicator, and there is room for improvement in this respect. 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 capable of increasing a light emitting area and improving visibility, aesthetics, and display quality. Is what you do.

[0005]

In order to achieve the above object, the present invention has a pointer which is rotated around an axis by a predetermined driving member, and a scale plate on which a measured value display corresponding to the pointer is formed. An indicator corresponding to the measured value display unit on the pointer, and a light emitting unit that rotates together with the indicator and illuminates the scale plate, the light emitting unit is provided in at least an area of the scale plate corresponding to the light emitting unit. And a reflection unit for diffusing and guiding the light from the unit.

Further, the invention is characterized in that the reflection means comprises a reflection layer formed on the scale plate.

Further, the present invention is characterized in that the reflecting means comprises a reflecting member arranged on the scale plate.

Further, the invention is characterized in that the reflection means has a diffusion processing section.

In the present invention, it is preferable that the measurement value display section is located within the area of the reflection means, and a cutout portion or a non-diffusion processing section is formed at a position of the reflection means corresponding to the measurement value display section. Features.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A pointer type display device according to the present invention
It has a pointer that rotates around its axis by a driving member composed of a stepping motor, an air core movement, etc., and a scale corresponding to the pointer, a scale plate on which a measurement value display section such as a character is formed, and a measurement value display section on the pointer. An indicator extending in a longitudinal direction corresponding to the indicator, and a light emitting unit that rotates together with the indicator and illuminates the plate surface of the scale plate, and diffuses the light from the light emitting unit to at least a region corresponding to the light emitting unit of the scale plate. -Reflection means for guiding the light and forming a light emitting area interlocked with the indicating section is provided.
As a result, the light from the light emitting section to the reflecting means is reflected while being diffused and guided by the reflecting means, so that the light emitting area can be made longer in the direction away from the indicating section and wider in the width direction. , Visibility, aesthetic appearance, and display quality can be improved.

[0011] Such a reflection means can be formed from a reflection layer formed by printing or coating on at least a required portion of the scale plate, or a plate-shaped or sheet-formed part separate from the scale plate. A reflection member having a shape, a film shape or the like can be formed by arranging it on at least a required portion of the scale plate.

[0012] Further, such a reflecting means is provided on the surface of a reflecting layer or a reflecting member made of a light-guiding material having a light-transmitting property, a semi-light-transmitting property or a colored light-transmitting property, for example, with fine irregularities (texture). A light diffusion function can be added by forming a diffusion processing section consisting of a stripe or a stripe, or a light guide material forming a reflection layer or a reflection member can be provided without forming such a diffusion processing section. A diffusing substance may be mixed.

When the measured value display section is located within the area of the reflecting means, if a hollow portion or a non-diffusion processing section is formed at the position of the reflecting means corresponding to the measured value display section, the measured value display section has the reflecting means. In the case where visibility is reduced due to blurring due to the light diffusion function, or when the measured value display section is illuminated, a decrease in luminance of the measured value display section can be suppressed. Such a cutout portion can be provided as a non-formed portion where the reflection means itself is not formed or as an opening which is exposed so as not to cover the measurement value display section. When the reflection means has a diffusion processing section, the diffusion processing section Can be provided from the non-diffusion processing section where no is formed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pointer type display device according to the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a front view showing the appearance of a pointer-type display device, and FIG. 2 is a partial sectional view taken along line AA of FIG. , FIG. 3 is B-
It is a principal part expanded sectional view along the B line.

1 and 2, a pointer type display device according to the present embodiment comprises a circuit board 1, a driving member 3 which is conductively mounted on the circuit board 1 and a driving shaft 2 extends forward, and a driving shaft 2. A pointer 4 which is driven to rotate and has a first light source L1, a scale plate 5 positioned behind the pointer 4 and arranged on the circuit board 1, and a scale 5 between the scale plate 5 and the circuit board 1 It is composed of a frame 6 to be arranged and a second light source L2 arranged on the circuit board 1 inside the frame 6.

The circuit board 1 is, for example, a hard circuit board in which a wiring pattern (not shown) is formed on a glass epoxy base material.
Driving means (not shown) for controlling and various circuit components (not shown) such as resistors and capacitors are electrically connected to the wiring pattern.

The driving member 3 is composed of a movable magnet type instrument or a stepping motor, and its main part is mounted behind the circuit board 1 so that the driving shaft 2 penetrates the circuit board 1. It is electrically connected to the wiring pattern (the driving means) by the conducting means.

The pointer 4 has an indicator 41 made of a light-transmitting synthetic resin material and extending longitudinally corresponding to a measured value indicator, which will be described later, of the scale plate 5. A cover member 42 made of a light-shielding material fixed to the indicating portion 41 so as to cover substantially the entire periphery except for the portion region; and a cover from the tip of the indicating portion 41 to the rotation base portion and fixed to the cover member 42. A substrate holder 43 made of a synthetic resin and an elongated light source substrate 44 mounted on the back of the substrate holder 43. The rotating base of the indicator 41 is connected to the tip of the drive shaft 2, and the pointer 4 Is the driving member 3
Is driven to rotate according to the measured amount. A slit 45 for partially exposing the indicator 41 is formed on the front side of the cover member 42, and a first light source L1 is mounted on the back side of the light source substrate 44.

A reflecting portion (not shown) for reflecting light from the second light source L2 to the inside of the indicating portion 41 toward the front end side is formed at an appropriate position on the rotating base of the indicating portion 41, and the light guided to the reflecting portion is formed. Is reflected and guided toward the front end, so that the indicator 41 can emit light linearly.

The first light source L1 is composed of two surface-mounted light emitting diodes mounted on a light source substrate 44 (41 indicating portions) corresponding to a light emitting area of the scale plate 5, which will be described later. A light emitting portion for irradiating, for example, blue light to a predetermined area (a light emitting area of the scale plate 5 described later) is formed. The first light source L1 is conductively connected to the circuit board 1 through the light source substrate 44 and a suitable conductive means.

The scale plate 5 has a light-transmitting substrate 52 having a through-hole 51 for enabling the connection between the drive shaft 2 and the pointer 4, and a first substrate 52 uniformly formed on the surface of the substrate 52. Ground color layer 5
3, a second ground color layer 54 formed on the ground color layer 53 except for a central region extending outward from the outer peripheral edge of the through hole 51 and surrounding the region, and a second ground color layer 54 formed on the ground color layer 53. Color layer 5
A coloring layer 55 (see FIG. 3) formed in the pointer 4 and forming a measurement value display section such as a scale or a character to be indicated by the pointer 4 (instruction section 41); The first ground color layer 53 to the reflection layer 56 are formed on the substrate 52 by means of screen printing or the like.

Each of the first and second ground color layers 53 and 54 has a light-shielding property, and the first ground color layer 53 is formed of, for example, black ink, and the second ground color layer 54 is formed of, for example, blue ink. Each is formed. The second ground color layer 54 is formed in a band shape in accordance with the rotation trajectory on the tip end side of the hands 4, and this band-shaped region receives irradiation light from the first light source L 1 mounted on the hands 4. It is provided so as to include a light-emitting region, which will be described later, that emits reflected light. The coloring layer 55 is formed of, for example, a white ink having a light-transmitting property, and is formed in a plurality of arc shapes according to the rotation orbit of the tip of the pointer 4. A cutout portion 57 where the layers 53 and 54 and the reflection layer 56 are not formed is provided. The colors of the first and second ground color layers 53 and 54 and the coloring layer 55 can be set arbitrarily. However, in consideration of the brightness of the light emitting region R described later, the second ground color layer 54 has a high lightness. It is preferable to set

As shown in FIG. 3, in this embodiment, the reflection layer 56 is formed by using a light guide material made of a transparent non-colored ink, and has a surface formed of fine unevenness having a predetermined roughness. A diffusion processing section 56a having a rectangular shape is provided. As described above, in the reflection layer 56 having the diffusion processing section 56a, the reflection layer 56 region corresponding to the band-shaped second ground color layer 54 is irradiated with irradiation light from the first light source L1. Light is reflected to form a blue light emitting region R (see FIG. 1) on the scale plate 5 that is linked to the hands 4. The light-emitting region R is visually recognized as a tail of light having a gradation that is brightest around the pointer 4 (instruction unit 41) and becomes darker as the pointer 4 is further away from the pointer 4.

At this time, the first light source L reaching the reflection layer 56
Part of the light from No. 1 is a diffusion processing unit 56 of the reflection layer 56.
a and the other part of the light is reflected
The light travels in the direction away from the instruction unit 41 while being diffused and guided in the inside of the light guide 6. As described above, the light from the first light source L1 is not only diffusely reflected by the diffusion processing unit 56a, but also diffuses and guides through the reflection layer 56 and proceeds in a direction away from the instruction unit 41. Compared with a conventional structure that does not exist, the light emitting region R formed with gradation around the indicator 41 can be longer in the direction away from the indicator 41 and wider in the width direction. The reflection layer 5
The light emitting region R formed by diffusion and light guide through 6 has less unpleasant feeling such as glare as compared with the simple surface reflection of the light-colored layer, has a deeper light-emitting mode, and further shifts from light to dark. Is also good. Further, since the portion corresponding to the colored layer (measured value display section) 55 is formed in the cutout portion 57 where the reflective layer 56 is not provided, the colored layer (measured value display section) 55 is formed by the light diffusion function of the reflective layer 56. The visibility is reduced due to blurring, or the colored layer (measurement value display section) 55
When illuminating, it is possible to suppress a decrease in luminance due to the light diffusion function, and to secure visibility during illumination and during non-illumination.

The frame body 6 is made of, for example, a white synthetic resin, and has a cylindrical portion 61 extending toward the rotation base side of the pointer 4 (indicating portion 41), and a reflective frame 62 extending corresponding to the colored layer 55.
In the cylindrical portion 61 and the reflection frame 62, a second light source L2 composed of a light emitting diode of a surface mount type is housed, respectively, and when the second light source L2 in the cylindrical portion 61 is turned on, Light (for example, white) is guided to the pointer 4 by the cylindrical portion 61, and the indicating portion 41 emits light linearly. When the second light source L2 in the reflection frame 62 is turned on, the light passes through the coloring layer 55 forming the measurement value display section through the reflection frame 62, and illuminates the coloring layer (measurement value display section) 55 with backlight. .

When the first and second light sources L1 and L2 emit light, the light from the first light source L2 is transmitted to the second ground color portion 5
A predetermined area of the reflective layer 56 provided on the scale 4 is irradiated to form a light emitting area R on the scale plate 5 and light from the second light source L2 is transmitted by the indicator 41 and the colored layer (measurement value display). Part)
56, which shine brightly.

In this embodiment, the light-emitting portion is formed by the first light source L1 mounted on the pointer 4, but the light-emitting portion for forming the light-emitting region R is arbitrary if the light-emitting region R can be formed on the scale plate 5. For example, a transparent body that forms a light emitting portion may be provided on the pointer 4, and this transparent body may emit light using a light source mounted on the pointer 4 itself or a member separate from the pointer 4.

Further, in the present embodiment, the light emitting region R is set in the direction of the decrease instruction (opposite to the clock) near the indicator 41, but the light emitting region R is set in the direction of the increase instruction (clockwise) of the indicator 41. R may be set to be located.
1 may be located on both sides.

In this embodiment, an example has been described in which the indicator 41 and the colored layer (measured value display) 55 are illuminated by the second light source L2 located behind the scale plate 5 and the hands 4 with backlight. , Instruction unit 41 and colored layer (measured value display unit) 55
Can be illuminated from the front side (front light).

As described above, according to this embodiment, the pointer 4 rotated around the axis by the driving member 3 and the scale plate 5 on which the measured value display portion 55 such as scales and characters corresponding to the hands 4 are formed. And a first light source (light-emitting unit) L1 that has a pointer and extends in a longitudinal direction corresponding to the measurement display unit 55, and a first light source (light emitting unit) L1 that rotates together with the pointer 41 and illuminates the surface of the scale plate 5. A reflecting portion (reflecting means) for diffusing and guiding the light from the first light source L1 to form a light emitting region R1 interlocked with the indicating portion 41 in at least a region of the scale plate 5 corresponding to the first light source L1. By providing 56), the light emitting region R can be enlarged, and visibility, aesthetic appearance, and display quality can be improved.

In this embodiment, since the reflecting means comprises the reflecting layer 56 formed on the scale plate 5 by printing, no special material or member is required, and the normal printing process of the scale plate 5 is performed. Thus, the reflection means can be formed, and the cost can be reduced.

Further, in this embodiment, since the cutout portion 57 is formed at a position corresponding to the colored layer (measurement value display portion) 55, it is possible to ensure good visibility during illumination and non-illumination. .

FIG. 4 is an enlarged sectional view of a main part showing a second embodiment of the present invention. In this embodiment, the scale plate 5 is replaced with the reflecting layer 56 applied in the first embodiment. Reflective sheet (reflective member) 5 in the form of a thin plate made of a transparent light guide material in the region
A diffusion processing section 560a composed of fine irregularities (textures) is formed on the surface of the reflection sheet 560, and the reflection sheet 5 corresponding to the colored section (measurement value display section) 55 is provided.
A cutout portion 570 having an opening substantially corresponding to or substantially corresponding to the shape of the colored portion (measured value display portion) 55 is provided in the 60 region, and the present embodiment also provides the same effects as those of the first embodiment. Can be expected.

FIG. 5 is an enlarged sectional view of a main part showing a third embodiment of the present invention. In this embodiment, for example, a second blue color is provided on the back (back) side of a substrate 52 on which the scale plate 5 is formed. And the first ground color layer 53 of black are provided so as to overlap with each other.
The same colored layer 5 as in the first embodiment is provided on the front side of the substrate 52.
5 and a reflective layer 56, the colored portions 53 and 54 are not formed on the back surface of the substrate 52 corresponding to the colored layer 55, and the front surface of the substrate 52 corresponding to this portion is In addition, a cutout portion (non-diffusion processing portion) 57 in which the reflection layer 56 is not formed is formed. According to this embodiment as well, the same effects as those of the first embodiment can be expected. In addition, since the substrate 52 can be used as a light guide member, the light emitting region R
Can be further widened.

Although not employed in each of the above embodiments, a semi-transparent smoke panel is arranged in front of the hands 4 and the scale plate 5 so that the light emitting region R can be displayed so as to float on a dark background. good.

In the configuration using the above-described smoke panel, the ground color (ground color layer 54) of the scale plate 5 in which the light from the light emitting portion (light source L1) is reflected to form the light emitting region R is blue or ground. If a light-colored color such as gray is set, the light-colored ground color can be seen through the smoke panel when the light sources L1 and L2 are not lit, and the smoke display may be impaired. However, by covering the light-colored ground color (ground-color layer 54) with a reflection unit having a diffusion / reflection function as in the present invention, it can be suppressed that the light-colored ground color is visually recognized. effective.

[0038]

As described in detail above, the present invention has a pointer which is rotated around an axis by a predetermined driving member, and a scale plate on which a measured value display portion corresponding to the pointer is formed. An indicator corresponding to the measured value display unit and a light emitting unit that rotates with the indicator and illuminates the scale plate are provided,
At least in an area of the scale plate corresponding to the light emitting section,
By providing the reflection means for diffusing and guiding the light from the light emitting section, it is possible to provide a pointer-type display device capable of expanding the light emitting area.

[Brief description of the drawings]

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

FIG. 2 is a partial cross-sectional view along the line AA of FIG. 1;

FIG. 3 is an enlarged sectional view of a main part taken along line BB in FIG. 1;

FIG. 4 is an enlarged sectional view of a main part showing a second embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a main part showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Drive shaft 3 Drive member 4 Pointer 5 Scale plate 6 Frame 41 Indicator 42 Cover member 43 Substrate holder 44 Light source board 45 Slit 51 Through hole 52 Substrate 53 First ground color layer 54 Second ground color layer 55 Colored layer (measured value display section) 56 Reflective layer (reflective means) 56a Diffusion processing section 57,570 Cutout section 61 Cylindrical section 62 Reflective section 560 Reflective plate (reflective section)

Claims (5)

[The claims] 1. A pointer which rotates around an axis by a predetermined driving member, and a scale plate on which a measured value display section corresponding to the pointer is formed, wherein an indicator corresponding to the measured value display section is provided on the pointer. And a light-emitting unit that rotates together with the indicating unit and illuminates the scale plate, and a reflection unit that diffuses and guides light from the light-emitting unit is provided in at least a region of the scale plate corresponding to the light-emitting unit. A pointer-type display device, characterized in that: 2. The pointer-type display device according to claim 1, wherein said reflection means comprises a reflection layer formed on said scale plate. 3. The pointer-type display device according to claim 1, wherein said reflection means comprises a reflection member arranged on said scale plate. 4. The pointer-type display device according to claim 1, wherein the reflection unit has a diffusion processing unit. 5. The apparatus according to claim 1, wherein the measurement value display section is located within the area of the reflection means, and a cutout portion or a non-diffusion processing section is formed at a position of the reflection means corresponding to the measurement value display section. The pointer-type display device according to any one of claims 1 to 4.