JP4310952B2 - Pointer type display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pointer-type display device mounted on various vehicles such as motorcycles and automobiles.
[0002]
[Prior art]
As a pointer-type display device mounted on various vehicles, an instrument body with a rotating shaft is mounted on the circuit board, a pointer is mounted on the tip of the rotating shaft, and an index consisting of scales and letters behind this pointer There is known a structure in which a display panel having a display portion is disposed, a light source is disposed behind the display plate, and an indicator portion of the pointer or the display plate is illuminated from behind by turning on the light source.
[0003]
A ground color part that forms the background of the indicator part is formed on the display board together with the indicator part. This ground color part is made light-shielding, and the indicator part is made light transmissive so that the indicator can be used when the light source is turned on. A configuration in which only the portion is brightly lit is common, but a pointer-type display device of a type in which both the ground color portion or the indicator portion and the ground color portion are light transmissive and the display board itself is surface-lit is also known. (See, for example, JP-A-11-118535 and JP-A-11-143212).
[0004]
[Problems to be solved by the invention]
However, the pointer-type display device of the type in which the ground color portion of the display panel emits light in this manner is an illumination design in which the indicator portion exists in the ground color portion where the surface light is brightly emitted. Since the display panel made of the formed plate material is merely configured to illuminate with a light source arranged behind it, the lighting design has a lack of three-dimensionality and depth, and must be a flat lighting design. There's a problem.
[0005]
The present invention has been made in view of these points, and a main object thereof is to provide a pointer-type display device capable of giving a lighting design a three-dimensional effect and a sense of depth when surface-emitting a display board. It is something to be done.
[0007]
In order to achieve the above-mentioned object, the present invention provides a display board having a pointer attached to the rotating shaft of the drive device, an indicator portion to be indicated by the indicator, and a ground color portion as a background of the indicator portion, A light source that illuminates the display panel from behind, and a reflector that is disposed behind the display panel and reflects the light of the light source, wherein the ground color portion is formed to be light transmissive and the rotation A through hole exposing the shaft and a light shielding portion extending around the through hole are formed, the light source is disposed in a rear region of the display plate corresponding to the light shielding portion, and the reflector is opposed to the light source. A first reflecting wall that reflects light in an outer peripheral direction centering on the rotation axis, and a first reflecting wall that faces the display plate across a gap and reflects light from the first reflecting wall to the display plate side. 2 reflective walls, and the reflective walls are low reflective corresponding to the indicator portion It has a management unit, the light reflectance of the low reflection processing section being smaller than the light reflectance of the other portions of the reflecting wall.
[0009]
Further, the invention is characterized in that a plurality of the indicator portions are arranged according to the operation of the pointer, and a plurality of the low reflection processing portions are formed according to the plurality of the indicator portions.
[0010]
Moreover, the present invention is characterized in that the low reflection processing portion is an opening formed in the reflection wall.
[0011]
Moreover, the present invention is characterized in that the low-reflection treatment part is made of a low-reflective coating attached to the reflection wall.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
As an embodiment of the present invention, a pointer-type display device includes a pointer, a display plate having an indicator portion to be indicated by the pointer and a background color portion as a background thereof, a light source that illuminates the display plate from behind, And a reflector that is disposed behind the display panel and reflects light from the light source to the display panel side. The ground color portion of the display panel is formed to be light-transmitting so that light from the light source can be transmitted, and the reflector is provided with a reflective wall facing the display plate with a gap therebetween, and the reflective wall is formed of the indicator portion and the ground surface. It extends along the back surface of the display panel so as to cover the color portion.
[0013]
In such a configuration, when the light source is turned on, the light illuminates the display panel from behind through the reflecting wall and the gap of the reflector, and the light-transmitting ground color portion is emitted in a planar shape. At this time, the reflective wall located in the back of the display board across the gap is illuminated with light from the light source and seen through the light-transmitting ground color part, so that a sense of depth occurs behind the ground color part, As a result, the indicator portion is visually recognized as floating in the ground color portion that emits light with a sense of depth, and a three-dimensional effect or a sense of depth can be imparted to the illumination design.
[0014]
In this embodiment, as long as the reflector (reflecting wall) illuminates the display panel through the gap, the arrangement position of the light source and the illumination method are arbitrary. For example, a circle-shaped light source is provided outside the indicator unit. It may be provided, or a light guide may be interposed between the light source and the gap.
[0015]
As another embodiment, a pointer-type display device according to the present invention includes a pointer mounted on a rotating shaft of a driving device, a display plate having an indicator portion to be indicated by the pointer and a background color portion as a background thereof, A light source that illuminates the display board from behind and a reflector that is disposed behind the display board and reflects light from the light source are provided. The ground color portion of the display board is formed to be light transmissive, and the display board is formed with a through hole that exposes the rotation axis and a light shielding portion that extends around the through hole, and the light source corresponds to the light shielding portion. A first reflecting wall that is disposed in the rear region of the reflector and that opposes the light source and reflects the light in an outer peripheral direction centered on the rotation axis, and a first reflection that opposes the display plate with a gap therebetween. A second reflection wall that reflects light from the wall to the display plate side is formed, and the second reflection wall extends along the back surface of the display plate so as to cover the indicator portion and the ground color portion.
[0016]
In such a configuration, when the light source is turned on, the light illuminates the display panel from the back through the first reflecting wall, the second reflecting wall, and the gap portion of the reflector, and the light-transmitting ground color portion is made planar. Make it emit light. At this time, as in the above-described embodiment, the reflection wall located in the back of the display panel across the gap is illuminated with the light from the light source, and can be seen through the light-transmitting ground color portion. Thus, a sense of depth is generated, and the indicator portion is visually recognized as floating in the ground color portion that emits light with a sense of depth, and a three-dimensional effect and a sense of depth can be imparted to the lighting design.
[0017]
In this embodiment, a light shielding portion is provided around the through hole of the display plate, a light source is disposed behind the light shielding portion, and light from the light source passes through the first reflecting wall in the outer circumferential direction around the rotation axis. Since the reflective structure is adopted, light can be supplied from the vicinity of the rotation axis to the outer periphery, and the display plate can be surface-emitted, so the display plate can be surface-emitted with a small number of point light sources, Cost savings can be achieved.
At this time, the two reflecting walls (first and second reflecting walls) may be provided with two reflecting walls in a single reflector, or two reflectors made of independent components behind the display panel. The reflecting walls (the first reflecting wall and the second reflecting wall) can be provided on each of these reflectors.
[0018]
Moreover, when implementing this invention, you may provide the low reflection process part in which the light reflectance is smaller than the circumference | surroundings in the location corresponding to the parameter | index part of a reflective wall (2nd reflective wall). By configuring in this way, when the reflection wall receives light from the light source, the low reflection processing portion having a low light reflectance is visually recognized as a shadow of the indicator portion at a position recessed from the display board, and the gap portion is separated. The three-dimensional effect or the sense of depth can be emphasized by the difference in distance between the indicator part and the shadow (low reflection region) that are spaced apart from each other, and reliable and good three-dimensional display can be performed. In addition, as long as such a low reflection process part is formed in the position corresponding to a parameter | index part, the shape is arbitrary.
[0019]
In adopting such a low reflection processing unit, when a plurality of indicator units are arranged according to the operation of the pointer, a plurality of low reflection region units may be provided according to the plurality of indicator units.
[0020]
Further, the low reflection processing unit itself can have any configuration as long as it can form a region having a low light reflectivity to such an extent that a shadow (shadow) of the index portion can be formed. It can be formed by an opening formed in the wall), can be formed by a low-reflective coating deposited on the reflecting wall (second reflecting wall), or can be formed by a reflecting wall (second reflecting wall). ) Or a diffuse reflection part formed on the wall surface, and when the wall surface of the reflection wall (second reflection wall) is formed on a glossy surface, a non-gloss surface is partially formed in the gloss surface. It can be formed by providing, or when a light reflecting film is applied to the wall surface of the reflecting wall (second reflecting wall), it is formed from a film removing portion in which the light reflecting film is partially removed. You can also model the wall of the reflecting wall (second reflecting wall), for example The walls of the slope or wall itself shapes can also be formed by devised to produce a shadow of the index portion.
[0021]
In the present invention, the indicator portion may be light-shielding or light-transmissive as long as it is differentiated from the ground color portion. Any material can be used for the reflector as long as it has a good light reflectance. The light source can be of any type. Further, it is preferable that the ground color portion has transparency so that at least the approximate shape of the reflecting wall (second reflecting wall) can be confirmed through the dial when the reflecting wall is illuminated by the light source.
[0022]
【Example】
Embodiments of a pointer-type display device according to the present invention will be described below with reference to the accompanying drawings.
[0023]
1 to 5 show a first embodiment of the present invention, FIG. 1 is an exploded perspective view of a pointer-type display device, FIG. 2 is a plan view of the main part showing the assembled state of FIG. 1, and FIG. 4 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 5 is an enlarged cross-sectional view of the main part showing an arrow B region in FIG.
[0024]
In FIG. 1, the pointer-type display device according to this embodiment includes a circuit board 1, an instrument body 3 that is conductively attached to the circuit board 1 and has a rotating shaft 2 extending forward, and a pointer that is attached to the distal end side of the rotating shaft 2. 4, a display plate 5 disposed between the pointer 4 and the circuit board 1, a light source 6 disposed around the rotation shaft 2 and disposed in front of the circuit board 1, and the display plate 5 The reflector 7 is disposed between the circuit board 1 and the circuit board 1.
[0025]
The circuit board 1 is made of a hard circuit board in which a wiring pattern (not shown) is provided on a glass epoxy base material, for example, and driving means (not shown) for driving / controlling the instrument body 3 or a resistor, a capacitor, etc. The various circuit components (not shown) are conductively connected to the wiring pattern.
[0026]
The instrument body 3 is composed of a movable magnet instrument or a stepping motor. In this example, the instrument body 3 is attached to the back of the circuit board 1 so as to penetrate the shaft hole 11 formed in the circuit board 1 and is soldered. The instrument main body 3 may be disposed on the front side of the circuit board 1 although it is electrically connected to the wiring pattern (the driving means) by the appropriate conduction means.
[0027]
The pointer 4 is made of a light-transmitting synthetic resin. As shown in detail in FIGS. 2 and 4, the pointer 4 is made of a light-transmitting synthetic resin and indicates an indicator portion to be described later, and the rotation center of the indicating portion 41. The cover portion 42 made of a light-shielding synthetic resin is connected to the distal end of the rotating shaft 2, and the distal end side of the indicating portion 41 extends into a ground color portion described later of the display plate 5.
[0028]
As shown in detail in FIG. 2, the display board 5 is arranged to have an arcuate array shape along the rotation trajectory of the pointer 4, and an indicator portion 51 including scales, characters, and marks to be indicated by the pointer 4. And a light-transmitting ground color portion 52 that extends in a belt shape including the index portion 51 and serves as a background of the index portion 51, and a light shielding portion 53 that surrounds the inside and outside of the ground color portion 52. As shown in FIGS. 3 and 4, the portion 51, the ground color portion 52, and the light shielding portion 53 are first to third colored layers printed and formed on a substrate 5 a that is a base material (base material) of the display plate 5. It is formed by L1 to L3. The substrate 5a is made of a translucent (translucent) synthetic resin having a milky white color in this example, but can also be made of a transparent material.
[0029]
The first colored layer L1 is made of, for example, white light-transmitting (semi-transmissive) colored ink, and is formed on the substrate so as to form an index portion 51 including predetermined scales, characters, and marks according to the operation of the pointer 4. It is printed on the front surface of 5a.
[0030]
The second colored layer L2 is made of, for example, a light-colored light transmissive (semi-transmissive) colored ink, and is printed and formed on substantially the entire front side of the substrate 5a so as to expose the indicator portion 51.
[0031]
The third colored layer L3 is made of, for example, black light-shielding colored ink, and is formed on substantially the entire front surface of the substrate 5a so as to overlap the second colored layer L2. In L3, an extraction region R that exposes the second colored layer L2 in a strip shape is formed, and a strip-shaped ground color portion 52 having light transmittance is formed by the extraction region R.
[0032]
In the present embodiment, the shape of the ground color portion 52 is set in a band shape, but any shape can be adopted as long as it is formed as a region including the index portion 51. For the purpose of improving illumination efficiency, a white reflective printing layer may be provided on the side of the display panel 5 facing the reflector 7. In this case, the reflective printing layer is the ground color portion 52 (colored layer L 2). Is preferably provided corresponding to the light shielding portion 53 (colored layer L3).
[0033]
The display plate 5 is also provided with a through hole 54 at a position corresponding to the rotary shaft 2, and the rotary shaft 2 and the pointer 4 can be connected through the through hole 54.
[0034]
The light source 6 is composed of, for example, a chip-type light emitting diode disposed on the front side of the circuit board 1, and a plurality of light sources 6 are disposed corresponding to the pointer 4 and the display board 5.
[0035]
These light sources 6 are on the side of the rotation axis 2 with respect to the ground color portion 52 of the display board 5, and are covered by a light shielding portion 53 area that extends from the periphery of the through hole 54 of the display board 5 toward the ground color portion 52. The light source 6 that illuminates the pointer 4 is located close to the shaft hole of the circuit board 1, and the light source 6 that illuminates the display board 5 is disposed outside thereof. A plurality of light sources 6 that illuminate the pointer 4 are arranged in accordance with a rotation operation of a light incident portion (not shown) formed at the rotation center of the pointer 4 (indicating portion 41), and the light sources 6 that illuminate the display board 5 are reflectors. 7 is arranged in a plurality of concentric circles around the rotation axis 2 so as to face a first reflecting wall 7 described later.
[0036]
The reflector 7 is an injection-molded body formed in a case shape with a white synthetic resin. As shown in detail in FIGS. 3 and 4, the reflector 7 is arranged in the front-rear direction so as to surround the outer periphery of the indicator portion 51 of the display board 5. A peripheral wall portion 71 that extends, an extension portion 72 that extends partially from the front side of the peripheral wall portion 71 toward the rotary shaft 2 along the display plate 5, and a through-portion 54 of the display plate 5 that is supported by the extension portion 72. A cylindrical portion 74 having a corresponding opening cylinder 73, and the cylindrical portion 74 is formed in a cylindrical shape surrounding the periphery of the rotary shaft 2 and accommodating the light source 6 for illumination of the pointer 4 inside. A first reflecting wall 75 extending obliquely forward is formed on the outer wall so as to face the light source 6 for illuminating the display panel 5.
[0037]
The outer wall surface of the first reflecting wall 75 is formed of a conical side surface around the rotation axis 2 and has a large diameter on the display board 5 side and a small diameter on the light source 6 side around the wall portion 74, and the inclination angle thereof is The angle is set to approximately 45 degrees with respect to the plate surface of the display plate 5, and the light from the light source 6 is configured to be reflected radially toward the outer circumference centered on the rotation axis 2.
[0038]
The reflector 7 is further formed on the bottom side corresponding to the first reflecting wall 75 and the wall portion 74, and serves as a die-cutting portion when the first reflecting wall 75 and the cylindrical portion 74 are formed. An annular open portion 76 and a second reflecting wall 77 extending from the front side of the peripheral wall portion 71 excluding the extension portion 72 to the light source 6 side (open portion side) are provided.
[0039]
The second reflecting wall 77 extends in the outer peripheral direction around the rotation axis 2 so as to surround the light source 6, and a gap S is formed between the display plate 5 and the second reflecting wall 77. The reflection wall 77 is formed of an inclined curved surface that gradually approaches the display plate 5 toward the outside, and is provided so as to cover at least the indicator portion 51 and the ground color portion 52 of the display plate 5.
[0040]
And in the case of the index part 51 and this example, in the case of the present embodiment, a low reflection processing part consisting of a substantially elliptical through-hole-shaped opening 78 is partially formed at a location corresponding to each index part 51 consisting of numerals. By the opening 78, the light reflectance of the second reflecting wall 77 corresponding to each index portion 51 is made smaller than that of other portions. The opening 78 is formed simultaneously with the molding of the reflector 7.
[0041]
In the present embodiment, the reflector 7 is formed as a one-piece component having a plurality of portions corresponding to the number of the instrument main bodies 3, but may be divided into a plurality according to the type of the instrument main body 3 or the instrument. Good. Further, in this embodiment, the first reflecting wall 75 and the second reflecting wall 77 are provided continuously on the single reflector 7, but each of these reflecting walls 75 and 77 can be provided from separate parts. .
[0042]
In such a configuration, when the light source 6 emits light, the light from the light source 6 for illuminating the pointer 4 passes through the cylindrical portion 74 of the reflector 7, the opening cylinder 73, and the through hole 54 of the display plate 5, and the pointer 4 ( The light input part of the instruction part 41) is reached and the instruction part 41 is caused to emit light. At this time, the emission color of the pointer 4 is, for example, red. On the other hand, the light from the light source 6 for illuminating the display board 5 illuminates the display board 5 through the reflecting walls 75 and 77 of the reflector 7 and the gap S, and emits the light-transmitting ground color part 52 and the indicator part 51. Let At this time, the ground color portion 52, which originally has a dark blue color, emits surface light with a bright light blue color through transmission of diffused light due to the light diffusion effect in the void S and the light diffusion effect by the milky white substrate 5a. The indicator 51 emits white light, which is its own color. The second reflecting wall 77 located behind the display plate 5 with the gap S therebetween is illuminated with light from the light source 6 so that the reflecting wall 77 is visible through the light-transmitting ground color portion 52. Is done.
[0043]
When the second reflection wall 77 receives light from the light source 6, the opening 78 having a small light reflectance is visually recognized as a shadow of the indicator 51 at a position recessed from the display board 5.
[0044]
As described above, according to the present embodiment, the pointer 4, the display plate 5 having the indicator portion 51 to be indicated by the pointer 4 and the ground color portion 52 as the background thereof, and the display plate 5 are illuminated from behind. And a reflector 7 that is disposed behind the display board 5 and reflects the light from the light source 6 toward the display board 5, and the ground color portion 52 of the display board 5 transmits the light of the light source 6. The reflection wall (second reflection wall) 77 is formed so as to be light-transmitting and opposed to the display plate 5 with the gap S interposed in the reflector 7, so that the gap S is displayed. Since the reflection wall (second reflection wall) 77 located behind the plate 5 and illuminated by the light from the light source 6 can be seen through the ground color portion 52, a sense of depth is generated behind the ground color portion. The indicator portion 51 is visually recognized as floating in the ground color portion 52 that emits light with a sense of depth, and the lighting design is three-dimensional. Or it is possible to impart a sense of depth.
[0045]
Further, in this embodiment, an opening (low reflection processing portion) 78 having a light reflectance smaller than that of the surroundings is provided at a location corresponding to the index portion 51 of the reflection wall (second reflection wall) 77, thereby reducing light. Since the opening having a low reflectance is visually recognized as a shadow of the index part at a position deeper from the display board, the three-dimensional difference is caused by the distance difference between the index part 51 and the shadow (opening part 78) spaced apart from the gap S. A feeling or depth feeling can be emphasized, and a reliable and good stereoscopic display can be performed. In addition, since the low reflection processing part is formed of the opening 78, the low reflection processing part can be provided simultaneously with the molding of the reflector 7, so that the production is easy and the cost can be reduced.
[0046]
In this embodiment, the display board 5 includes a light transmitting ground color portion 52, a through hole 54 that exposes the rotating shaft 2, and a light shielding portion 53 that extends around the through hole 54. Is disposed in the back surface area of the display plate 5 corresponding to the light shielding portion 53, the reflector 7 faces the light source 6, and reflects the light in the outer peripheral direction around the rotation axis 2, and the gap By forming a second reflecting wall 77 facing the display plate 5 across the portion S and reflecting the light from the first reflecting wall 75 to the display plate 5 side, from the vicinity of the rotary shaft 2 to the outer periphery thereof. Since light can be supplied and the display board 5 can emit light, the display board 5 can be emitted with a small number of light sources 6, and cost reduction can be achieved.
[0047]
FIG. 6 shows a modified example of the low reflection processing section as the second embodiment of the present invention. In this embodiment, instead of the low reflection processing section including the opening 78 of the first embodiment, At the time of illumination, the light reflectivity of the reflection wall (second reflection wall) 77 is partially reduced to form a low-reflective coating 781 that forms a shadow of the indicator portion.
[0048]
The low-reflective coating 781 is formed of a low-reflective coating that is attached to the reflective wall 77 and has a lower reflectance than other regions, such as a printing film, a transfer film, and a coating film.
[0049]
FIG. 7 shows another modification of the low reflection processing section as the third embodiment of the present invention. In this embodiment, the low reflection processing section shown in the first and second embodiments is used. Instead, the wall surface of the reflecting wall (second reflecting wall) 77 is subjected to, for example, a textured process, so that the light reflectance of the reflecting wall (second reflecting wall) 77 is partially reduced during illumination, and the indicator portion A diffuse reflection part 782 for forming 51 shadows is provided. In addition, since the diffuse reflection part 782 which consists of such embossing can be formed simultaneously with the shaping | molding of the reflector 7, production is easy and it can aim at cost reduction.
[0050]
FIG. 8 shows a modification of the display board as a fourth embodiment of the present invention. A semi-transmissive layer L4 is printed on the back surface of the substrate 5a, and the semi-transmissive layer L4 corresponds to the index portion 51. A punching portion 55 is provided. The semi-transmissive layer L4 is formed of an arbitrary color tone, for example, a dark-colored smoke layer, and is provided so as to cover at least the ground color portion 52.
[0051]
By forming the cutout 55 corresponding to the shape of the index portion 51 in the semi-transmissive layer L4 in this way, a projection image separated from the index portion 51 by the thickness of the substrate 5a can be formed on the back surface of the substrate 5a. The part 51 itself can have a sense of depth or a three-dimensional feeling.
[0052]
【The invention's effect】
As described above in detail, according to the present invention, an intended purpose can be achieved, and a pointer-type display device having a three-dimensional feeling or a depth feeling can be provided.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a pointer-type display device according to a first embodiment of the present invention.
FIG. 2 is a plan view of a main part showing the assembled state of FIG. 1;
FIG. 3 is a perspective view of a main part of a reflector according to the first embodiment of the present invention.
4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is an enlarged cross-sectional view showing a region indicated by an arrow B in FIG. 4;
FIG. 6 is a cross-sectional view of a main part showing a second embodiment of the present invention.
FIG. 7 is a cross-sectional view of a main part showing a third embodiment of the present invention.
FIG. 8 is a cross-sectional view of a main part showing a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Circuit board 2 Rotating shaft 3 Instrument main body 4 Pointer 5 Display board 5a Board | substrate 6 Light source 7 Reflector 51 Indicator part 52 Ground color part 53 Light shielding part 54 Through-hole 55 Extraction part 71 Perimeter wall part 72 Extension part 73 Opening cylinder 74 Cylindrical part 75 First reflection wall 76 Opening portion 77 Second reflection wall 78 Opening portion (low reflection processing portion)
781 Low reflective coating 782 Diffuse reflection portion L1 First colored layer L2 Second colored layer L3 Third colored layer S Cavity portion R Extraction region

Claims (4)

A pointer attached to the rotating shaft of the drive device;
A display board having an indicator part to be indicated by the pointer and a ground color part as a background of the indicator part, a light source for illuminating the display board from behind,
A reflector disposed behind the display board and reflecting the light of the light source;
The display board is formed with a light-transmitting portion of the ground color portion and a through hole exposing the rotation shaft and a light shielding portion extending around the through hole.
The light source is disposed in a rear area of the display plate corresponding to the light shielding portion,
The reflector is opposed to the light source and reflects the light in an outer peripheral direction centering on the rotation axis, and is opposed to the display plate across a gap and from the first reflection wall. A second reflecting wall that reflects light toward the display plate,
Finger said reflective wall has a low reflection processing unit corresponding to the index portion, the light reflectance of the low reflection processing section, you being smaller than the light reflectance of the other portions in the reflective wall Needle-type display device. 2. The pointer type display device according to claim 1, wherein a plurality of the indicator portions are arranged according to the operation of the pointer, and a plurality of the low reflection processing portions are formed according to the plurality of the indicator portions. 2. The pointer type display device according to claim 1, wherein the low reflection processing part is an opening formed in the reflection wall. 2. The pointer-type display device according to claim 1, wherein the low-reflection treatment unit is made of a low-reflective coating that is attached to the reflection wall.

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