JP2010127679A - Measuring instrument display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measuring instrument display device which can display stereoscopically a display part 22 of a warning light etc. even in a state of external light being absent. <P>SOLUTION: The measuring instrument display device 1 includes a dial 5, a light source 14 for illuminating an indicator which illuminates the indicator 10 of which the base portion 10a is attached to the tip 7a of an indicator shaft (output shaft) 7 piercing the dial 5, and the display part 22 of the warning light etc. which is lighted for display around the indicator 10. The dial 5 has a transparent base (transparent substrate) 16, a minute lens part 17 disposed on the surface side of the base 16 and a pattern part 25 for enlarged display disposed on the reverse side of the base 16, and is so constituted that the pattern part 25 for enlarged display is magnified by the minute lens part 17 to be made visible at a position apart from the surface of the base 16. A reflecting member 30 which reflects for illumination the light of the light source 14 for indicator illumination toward the central area part 19b is disposed between the dial 5 and the indicator 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an instrument display device that displays an image by indicating with a pointer.

  In vehicles such as automobiles, an instrument display device is attached to the front part of the passenger compartment. This instrument display device usually has a dial for displaying driving information and a base attached to the tip of a pointer shaft penetrating the dial, and rotates to indicate an indicator disposed on the dial. (See, for example, Patent Document 1).

And this instrument display device includes a pointer illumination function unit that illuminates the pointer when there is no outside light such as at night, and a warning light display unit that is lit on the dial when necessary regardless of day or night. It has.
JP 2005-62052 A

  By the way, in the above-mentioned instrument display device, it has a transparent base material, a fine lens part arranged on the surface side of the base material, and an enlarged display design part arranged on the back side of the base material as a dial. Things are being considered by the applicant. In such a dial plate, it is possible to configure the enlarged display pattern portion so that it can be viewed at a position away from the surface of the base material by the fine lens portion. The display unit such as the displayed warning light can be displayed three-dimensionally.

  However, there is a problem in that when there is no outside light at night or the like and the surroundings are dark, the dial cannot be visually recognized, and a three-dimensional effect cannot be felt even when a display unit such as a warning light is turned on.

  Therefore, an object of the present invention is to provide an instrument display device that can display a warning lamp or other display unit in a three-dimensional manner even in the absence of external light.

  In order to solve the above problems, an instrument display device according to the present invention includes a dial, a pointer illumination light source that illuminates a pointer having a base attached to a tip of a pointer shaft that passes through the dial, and the pointer A display device such as a warning light that is lit and displayed in the surroundings, wherein the dial includes a transparent base material, a fine lens portion disposed on a surface side of the base material, and the base An enlarged display design portion disposed on the back side of the material, and the enlarged lens design portion is enlarged by the fine lens portion so that the enlarged display design portion can be visually recognized at a position away from the surface of the substrate. In addition, a reflection member is disposed between the dial and the pointer to reflect the light of the pointer illumination light source toward the dial around the pointer and to illuminate the dial around the pointer. It is a feature.

According to the present invention, the reflecting member that reflects the light of the pointer illumination light source toward the dial around the pointer and illuminates the dial around the pointer with the reflected light is disposed between the dial and the pointer. The On the other hand, a warning light display unit is lit around the pointer.
That is, by reflecting the light of the pointer illumination light source around the pointer, the dial around the pointer can be visually recognized even in the absence of external light, and the dial can be recognized three-dimensionally. When a warning lamp display unit is lit up and displayed around, the warning lamp display unit can be displayed three-dimensionally.

  Hereinafter, the best mode for realizing the instrument display device of the present invention will be described based on Example 1 shown in the drawings.

First, the configuration will be described.
FIG. 1 is a front view of the instrument display device according to the first embodiment. FIG. 2 is a cross-sectional view illustrating the instrument display device according to the first embodiment. FIG. 3 is an exploded perspective view schematically showing the instrument display device of the first embodiment. FIG. 4 is a cross-sectional view schematically showing a dial of the instrument display device of the first embodiment. FIG. 5 is a front view illustrating an enlarged display symbol portion of the instrument display device according to the first embodiment. FIG. 6 is a cross-sectional view illustrating a reflecting member of the instrument display device according to the first embodiment.

  An instrument display device 1 as shown in FIGS. 1 to 3 (mainly refer to FIG. 1) is attached to a vehicle interior such as an automobile. Here, the instrument display device 1 is a dual meter that integrally includes two instrument parts 2 and 3 of a speedometer and a tachometer. However, the configuration of the instrument display device 1 is not limited to this.

  As shown in FIG. 2, the instrument display device 1 has a structure in which an electronic substrate 4 and a dial 5 are attached to a resin housing (not shown). The dial plate 5 is arranged above the electronic substrate 4 (on the front surface side) in parallel with a predetermined interval. In the case of the dual meter, the electronic board 4 and the dial 5 are shared by the two instrument parts 2 and 3.

  A movement 6 is attached to the lower surface (rear surface) of the electronic substrate 4, and an output shaft 7 of the movement 6 is connected to a shaft hole 8 formed in the electronic substrate 4 and a shaft hole 9 formed in the dial plate 5. The through-holes are arranged almost in a plane. The output shaft 7 is used as a pointer shaft, and a base portion (or a portion including the vicinity thereof) 10a of the pointer 10 is attached to a tip portion 17a protruding to the surface side of the dial plate 5. Further, a balancer 11 is attached to the base portion 10a of the pointer 10, and a pointer cap 12 for fitting the balancer 11 is fitted. The pointer 10 is formed of a colorless or colored transparent resin or the like so that it can be illuminated. On the other hand, the pointer cap 12 is formed of an opaque resin or the like having a light shielding property so as to block the pointer illumination light.

  Such an instrument display device 1 is provided with a pointer illumination function unit 13 for illuminating the pointer 10 when there is no outside light such as nighttime and the surroundings are dark. The pointer illumination function unit 13 includes a pointer illumination light source 14 and a pointer exposure prevention wall 15.

  A plurality of pointer illumination light sources 14 are attached to the surface side of the electronic substrate 4 and at positions facing the inner portion of the pointer cap 12. As the pointer illumination light source 14, a power-saving long-life light source such as an LED is used. The pointer exposure preventing wall 15 surrounds the plurality of pointer illumination light sources 14, is disposed at a position substantially corresponding to the outer peripheral portion of the pointer cap 12, and is substantially cylindrical reaching the dial 5 from the electronic substrate 4. It has a shape.

  On the other hand, as shown in FIG. 4, the dial plate 5 is disposed on a resin-made transparent base material 16, a fine lens portion 17 disposed on the front surface side of the transparent base material 16, and a back surface side of the transparent base material 16. The dial design forming portion 18 is provided.

  The micro lens unit 17 is configured as a micro lens group installation unit having, for example, a large number of so-called micro lenses 17a (see FIG. 4). The microlens 17a can be formed on the transparent base material 16 using, for example, a precision mold, or can be formed on the transparent base material 16 by ejecting ink in which a transparent resin is dissolved in a solvent with an ink jet printer. . In any of the manufacturing methods, the microlens 17a has a convex lens shape protruding to the surface side of the transparent substrate 16.

  The dial design forming portion 18 is defined by a pointer rotation area 19 corresponding to the rotation area of the pointer 10 and an external area 20 outside the pointer rotation area 19. Here, the pointer rotation area 19 further includes an index display portion 19a that forms an outer peripheral portion, and a central area portion 19b that forms an inner portion of the index display portion 19a. Thus, the central area 19b corresponds to the dial plate 5 around the pointer 10.

  The indicator display portion 19a has a ring shape having a required width, and is formed by stripping the strip-shaped painted portion 21a formed by dark opaque printing and by whitening the strip-shaped painted portion 21a. And the number / scale part 21b. The number / scale portion 21b is non-printing or colored translucent printing. The central region 19b has a substantially circular shape surrounded by the indicator display unit 19a, and a plurality of warning light display units 22 are arranged in the central region 19b.

  Each warning light display unit 22 is individually lit and displayed when necessary regardless of day and night, and the warning light includes warning light, indicator light, indicator light, and the like. The warning light display unit 22 is formed by whitening a light shielding printing layer 22a formed on a base color printing layer 26 described later. The warning light display unit 22 is non-printing or colored translucent printing. In addition, each warning light display unit 22 can be illuminated by an illumination light source 23 such as a warning light mounted on the surface side of the electronic substrate 4 and facing each warning light display unit 22. . A power-saving long-life light source such as an LED is used for the illumination light source 23 such as a warning light. An exposure prevention wall 24 for warning light or the like having a substantially cylindrical shape extending from the electronic substrate 4 to the dial plate 5 is provided around the illumination light source 23 for warning light or the like. The warning light exposure prevention wall 24 may be configured individually or integrally corresponding to the plurality of warning light display units 22, and in the case of integration, the pointer exposure prevention is further performed. You may make it comprise integrally with the wall 15. FIG.

  An enlarged display pattern portion 25 and a base color print layer 26 formed on the enlarged display pattern portion 25 are provided in the central area portion 19 b and the external area 20 of the pointer rotation area 19. .

  The enlarged display design portion 25 is composed of a translucent printing portion, and may be any design as long as it is suitable as the design of the dial plate 5, but has a color or tone that is not so conspicuous. It is preferable that Here, a light-colored checkered fine pattern or the like is used (see FIG. 5). Further, the base color printing layer 26 is preferably formed of a mirror ink having a reflectivity with respect to light (external light) from the front surface and a light transmittance with respect to light (illumination light) from the back surface side. Here, a dull silver ink is used. The enlarged display pattern portion 25 and the base color print layer 26 are formed by screen printing, offset printing, or the like.

  The indicator display portion 19a and the external region 20 can be illuminated by a plurality of dial illumination light sources 27 attached to the surface side of the electronic substrate 4 and facing the indicator display portion 19a or the external region 20. It has become. As the dial plate light source 27, a power-saving long-life light source such as an LED is used. In the indicator display portion 19a, light is transmitted through the number / scale portion 21b, and light is shielded in the band-shaped painted portion 21a. Therefore, only the number / scale portion 21b that transmits light is lit and displayed.

  On the other hand, the central area portion 19b can be illuminated by the reflected light from the reflecting member 30 that is disposed between the dial 5 and the pointer 10 and reflects the light of the pointer illumination light source 14 toward the central area portion 19b. Yes.

  The reflecting member 30 has a ring shape formed of a transparent resin or the like as shown in FIGS. 3 and 6, and reflects the light from the annular reflecting surface portion 31 surrounding the output shaft 7 which is a pointer shaft, and the light source 14 for pointer illumination. And an optical through hole 32 to be passed.

  The reflecting surface portion 31 is inclined in a mortar shape having a low inside and a high outside, and can reflect light incident from below toward the outside of the reflecting member 30. A fitting portion 32 that can be fitted to the lower surface of the pointer cap 12 is formed on the upper portion of the reflecting surface portion 31. Further, the light through hole 32 is set to a diameter sufficiently larger than the outer diameter of the output shaft 7, and the pointer 10 can be sufficiently illuminated by the light penetrating the light through hole 32.

Next, the operation will be described.
First, “the basic operation of the instrument display device of the present invention” will be described, and then “the three-dimensional display operation during night illumination” in the instrument display device of the first embodiment will be described.
[Basic operation of the instrument display device of the present invention]
FIG. 7 is a front view showing an enlarged display symbol portion enlarged by the fine lens portion.

  The dial plate 5 of the instrument display device 1 of Example 1 has a fine lens portion 17 on the front surface side of the transparent base material 16 and an enlarged display pattern portion 25 on the back surface side of the transparent base material 16. Here, when the microlens 17 is an assembly of convex lens-like microlenses 17a, a lens effect roughly similar to that of a single convex lens can be obtained. The portion 25 can be enlarged and viewed at a position away from the surface of the transparent substrate 16. That is, the enlarged display symbol pattern 25 appears enlarged as shown in FIG.

  Here, the enlargement effect for the enlarged display symbol portion 25 is obtained only when the enlarged display symbol portion 25 has a specific positional relationship with respect to the fine lens portion 17 in the surface direction of the dial plate 5. This specific positional relationship has a slight range, and the magnification by the fine lens portion 17 can be changed within this range. At this time, as the enlargement magnification by the fine lens portion 17 increases, the enlarged display design portion 25 that appears enlarged tends to appear farther away from the transparent base material 16 (visible on the back side). (Subduction magnified virtual image).

  Further, when the enlarged display pattern portion 25 deviates from the specific positional relationship described above with respect to the fine lens portion 17 (hereinafter referred to as a normal positional relationship), the enlargement effect cannot be obtained and only the same magnification can be seen. . As described above, the fine lens unit 17 has characteristics different from those of a single convex lens.

  In the instrument display device 1 according to the first embodiment, the range in which the enlarged display design portion 25 appears to be enlarged is set in the central region 19b and the external region 20. And about the indicator display part 19a, it sets so that the strip | belt-shaped painted part 21a and the numerical value / scale part 21b may be visually recognized by the same magnification.

  That is, in the instrument display device 1 of the first embodiment, the fine lens portion 17 is provided on almost the entire surface of the transparent base material 16, and the band-shaped painted portion 21a and the numerical value / scale portion 21b of the index display portion 19a are fine lenses. It is formed so as to have a normal positional relationship with respect to the portion 17, and the enlarged display pattern portion 25 is formed with a specific positional relationship with respect to the fine lens portion 17 in the central region portion 19 b and the external region 20 is doing.

  Thereby, the index display part 19a is visually recognized on the surface of the transparent base material 16 at the same magnification, while the central area part 19b and the external area 20 are enlarged to the back side (sinked position) from the transparent base material 16. The enlarged display design portion 25 is visually recognized. As a result, the dial plate 5 has a high three-dimensional effect having a height difference (or a difference in position in the front-rear (depth) direction) between the index display portion 19a, the central region portion 19b, and the external region 20.

  Further, when the warning light display unit 22 is turned on by illuminating the illumination light source 23 such as a warning light, the warning light display unit 22 is displayed in a state of being transmitted through the enlarged display part 25 for enlargement display. The That is, the warning light display unit 22 can be seen through the enlarged display symbol unit 25, and the height difference (or the difference in position in the front-rear (depth) direction) between the warning light display unit 22 and the central region 19b. Can feel. As a result, the warning light display unit 22 lit on the central region 19b appears to be floating.

  At this time, in the central region 19b, the light from the warning light lighting light source 23 that has passed through the warning light display unit 22 passes through the base color print layer 26 and the enlarged display design part 25. In other words, the display part 22 for enlarged display overlaps the display part 22 for warning lights, etc., but the enlarged display part 25 is conspicuous because the enlarged display part 25 is a light-colored fine pattern. Absent. On the contrary, by turning off the light source 23 for turning on the warning light or the like, the warning light display portion 22 is not visible from the dial 5, and only the enlarged display symbol portion 25 can be visually recognized. The warning lamp display unit 22 is turned on and off independently for each of the plurality of warning lamp display units 22.

[3D display effect during night illumination]
In the instrument display device 1 of the first embodiment, when there is no outside light such as at night and the surroundings are dark, the pointer illumination light source 14 and the dial illumination light source 27 are turned on so as to be in a so-called night illumination state. As a result, the pointer 10, the number / scale portion 21 b of the dial plate 5, and the external region 20 are displayed in a light-emitting manner. In addition, the pointer 10 is illuminated so that light that has passed through the light through hole 32 of the reflecting member 30 enters the inside of the pointer 10 to shine.

  Further, since the light of the pointer illumination light source 14 is reflected toward the dial plate 5 by the reflecting surface portion 31 of the reflecting member 30, the central region portion 19b is illuminated by this reflected light. Thereby, even in a state where there is no external light, the central region portion 19b which is the dial plate 5 around the pointer 10 can be visually recognized, and the central region portion 19b can be recognized three-dimensionally.

  When the warning lamp display unit 22 is turned on, the light of the warning light illumination light source 23 for lighting the warning lamp display unit 22 is direct light directly incident on the warning lamp display unit 22. The brightness is higher than the light that illuminates the central region 19b, which is reflected light. Therefore, the warning lamp display unit 22 can be illuminated on the central region 19b. At this time, since the central region 19b is recognized three-dimensionally, the warning light display unit 22 appears in a floating state.

  In particular, in the first embodiment described above, the reflecting member 30 has a ring shape having an annular reflecting surface portion 31 surrounding the output shaft 7 and a light through hole 32 through which the light of the pointer illumination light source 14 passes. As a result, the light of the pointer illumination light source 14 can be uniformly reflected on the central region 19b, and at the same time, the pointer 10 can be reliably illuminated, and the illumination of the pointer 10 and the illumination of the central region 19b can be performed in good condition. It can be compatible.

Next, the effect will be described.
In the instrument display device 1 of the first embodiment, the effects listed below can be obtained.

  (1) A dial plate 5, a pointer illumination light source 14 for illuminating a pointer 10 having a base 10 a attached to a tip 7 a of a pointer shaft (output shaft 7) penetrating the dial plate 5, and around the pointer 10 An instrument display device 1 having a warning light display unit 22 that is lit and displayed, wherein the dial plate 5 is disposed on a transparent base material (transparent base material 16) and the surface side of the base material 16 The fine lens portion 17 and the enlarged display pattern portion 25 arranged on the back surface side of the base material 16, and the fine display portion 25 is enlarged by the fine lens portion 17 of the base material 16. It is configured to be visible at a position away from the surface, and between the dial 5 and the pointer 10, the light of the pointer illumination light source 14 is reflected toward the periphery of the pointer 10 and illuminated. The reflecting member 30 is arranged. Thereby, even if there is no outside light, the warning light display unit 22 can be displayed in three dimensions.

  (2) The reflection member 30 has a ring shape having an annular reflection surface portion 31 surrounding the pointer shaft 7 and a light through hole 32 through which the light of the pointer illumination light source 14 passes. For this reason, the illumination of the pointer 10 and the illumination of the central region 19b can be made compatible in a good state.

  As mentioned above, although the instrument display apparatus of this invention has been demonstrated based on Example 1, about a concrete structure, it is not restricted to these Examples, The summary of the invention which concerns on each claim of a claim As long as they do not deviate, design changes and additions are permitted.

  In the first embodiment, the fine lens portion 17 is formed on the entire surface of the transparent base material 16, but the fine lens portion 17 and the enlarged display pattern are provided only at positions corresponding to the central region portion 19 b and the external region 20 of the transparent base material 16. The portion 25 may be partially provided, and the enlarged display pattern portion 25 may have a specific positional relationship with the fine lens portion 17.

  In the first embodiment, the instrument display device of the present invention is applied to a dual meter provided with the speedometer 2 and the tachometer 3, but a single meter having only one instrument section, three The present invention can also be applied to a combination meter having the above instrument section. In short, any instrument display device including a pointer rotating on a dial, a pointer illumination light source for illuminating the pointer, and a display unit such as a warning light arranged around the pointer can be applied.

It is a front view of the instrument display device of Example 1. It is sectional drawing which shows the instrument display apparatus of Example 1. FIG. It is a disassembled perspective view which shows the instrument display apparatus of Example 1 typically. It is sectional drawing which shows typically the dial plate of the instrument display apparatus of Example 1. FIG. It is a front view which shows the symbol part for an enlarged display of the meter display apparatus of Example 1. FIG. It is sectional drawing which shows the reflection member of the meter display apparatus of Example 1. FIG. It is a front view which shows the pattern part for an enlarged display expanded by the micro lens part.

Explanation of symbols

1 Instrument display device 5 Dial 7 Pointer shaft (output shaft)
10 Pointer 14 Light source for pointer illumination 16 Base material (transparent base material)
17 Fine lens part 19b Around the pointer (central area part)
22 Warning light display unit 25 Enlarged display pattern 30 Reflective member

Claims (2)

An instrument comprising: a dial plate; a pointer illumination light source that illuminates a pointer having a base attached to a tip of a pointer shaft that passes through the dial plate; and a warning light display unit that is lit around the pointer. A display device,
The dial has a transparent base material, a fine lens portion arranged on the front surface side of the base material, and an enlarged display pattern portion arranged on the back surface side of the base material, and the fine lens portion allows the The magnified display design portion is enlarged so that it can be viewed at a position away from the surface of the base material,
A reflection member is disposed between the dial and the pointer to reflect light from the light source for pointer illumination toward the dial around the pointer and to illuminate the dial around the pointer. An instrument display device. The instrument display device according to claim 1,
The instrument display device according to claim 1, wherein the reflecting member has a ring shape having an annular reflecting surface portion surrounding the pointer shaft and a light through hole through which light from the pointer illumination light source passes.

Images