JP2007079324A - Display board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display board which has gradations on its top surface side and is made more attractive by making print steps inconspicuous in circumferences of the gradations. <P>SOLUTION: The display board has a substrate 22, a transmissive colored layer 23 provided on the substrate 22, a ground layer 24 (first print layer) provided in a first area R1 on the transmissive colored layer 23, and a ground color layer 26 (second print layer) which covers a boundary X of a second area R2 where the ground layer 24 is not provided and the ground layer 24 to form gradations at least at an edge of the boundary X of the second area R2, and the edge of the boundary X of the ground layer 24 is a variable density area R3 which gradually decreases from high print density to low print density toward the second area R2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display board used, for example, in an instrument device of a vehicle, and more particularly to a display board that enhances stereoscopic effect and design by forming gradation.

For example, Patent Document 1 shown below is known as a technique for enhancing the stereoscopic effect and design by forming gradation on the surface side of the display panel. The dial plate (display plate) described in Patent Document 1 is provided with a translucent design print layer 4 on the surface of a transparent base material 1 except for indications 3 such as scales, numerals, and symbols, and further a design print layer. The surface of 4 is defined as a plurality of display areas, and a gradation print layer 5 (for example, black) whose brightness gradually changes from one direction to the other direction is provided in the display area.
Japanese Patent Laid-Open No. 11-119662

  The gradation in Patent Document 1 is provided in the entire area of the dial (display board), but there are cases where it is desired to provide the gradation only in a specific area. 5 to 7 show an example of such a display board 51, in which gradation is provided in the vicinity of the center of the display board 51 (in the area surrounded by a broken line in FIG. 5, hereinafter referred to as gradation area GA). is there.

  The display board 51 is formed by printing and forming, for example, a white transparent display layer 54 to be a display section 53 for displaying the scale of the engine speed of the vehicle, numbers, etc. on the surface side of the colorless and transparent substrate 52, and then removing the display section 53. For example, a black ground color layer 56 to be the ground portion 55 is formed by printing. The ground color layer 56 is also a gradation forming layer. That is, for example, a dot-like pattern printed in black in the same process as the ground color layer 56 so that the brightness gradually changes toward the through hole 57 formed in the center of the display plate 51 in the gradation area GA. It is. 58 is a colorless and transparent protective layer that suppresses reflection of the surface of the display board 51 by external light and protects the printed surface from being scratched. FIG. 7 is a detailed partial view of gradation, in which a circular black portion shows a dot-like pattern printed in black, and a white transparent display layer 54 appears in the plain portion.

  In the display board 51 configured in this way, the white display part 53 is visually recognized on the black ground part 55, and the gradation area GA gradually changes from black to white toward the center side of the display board 51 from the numeral side. Change. When the surroundings are dark, such as at night, when a light emitting diode (not shown) that emits blue light, for example, disposed on the back side of the display board 51 is lit, the display unit 53 is transmissively illuminated in blue, and the gradation area GA is From the number side toward the center of the display plate 51, the color gradually changes from black to blue and is transmitted and illuminated.

  In the display plate 51 shown in FIGS. 5 to 7, a black base layer 59 is provided between the transmissive display layer 54 and the ground color layer 56 excluding the display portion 53 and the gradation area GA. It is provided. The base layer 59 is provided so that the ground portion 55 does not pass through when the light emitting diode disposed on the back side of the display panel 51 is turned on. Since the ground color layer 56 to be the ground part 55 is black, the ground part 55 is difficult to be transmitted. However, when the light of the light emitting diode is strongly irradiated to a part or a pinhole is generated in the ground color layer 56, the ground part 55 There is a possibility that two layers are provided even if the portion that does not transmit light is black.

  However, when the display board 51 prints the ground layer 59 and then prints the ground color layer 56 (gradation forming layer) so as to cover the ground layer 59, the level difference H depending on the presence or absence of the ground layer 59 is shown in FIG. Occurs. When this state is viewed from the front of the display board 51, a substantially circular step line L appears around the gradation area GA as a continuous line as shown in FIG. Although it was intended to improve the design by forming a gradation in this way, there was a problem that the appearance was reduced. A level difference due to printing also appears on the ground portion 55 around the display unit 53, but is at the time of the display unit 53. The level difference is not noticeable because the display unit 53 with a different color tone is easily visible.

  SUMMARY OF THE INVENTION The present invention has been made in view of these points, and an object of the present invention is to provide a display board that has a gradation on the front surface side and has an improved appearance by making printing steps around the gradation inconspicuous.

  In order to achieve the above object, the present invention provides a boundary between a substrate, a first print layer provided in the first region on the substrate, and a second region in which the first print layer is not provided. And a second printed layer that covers the first printed layer and forms a gradation at least at the border of the second region, wherein the border of the first print layer is This is a dense area where the printing density gradually increases from dense toward the second area.

  Further, the substrate, the transmissive colored layer provided on the substrate, the first printed layer provided in the first region on the transmissive colored layer, and the first printed layer are not provided. A display board comprising a second print layer that covers a boundary with a second region and the first print layer, and forms a gradation at least near the boundary of the second region. A density region where the printing density gradually becomes coarser from the dense side is formed by extending the boundary of the layer toward the second region side.

  In addition, the dense region is a net-like pattern.

  Further, the first print layer and the second print layer are black.

  In the display board having gradation on the surface side, it is possible to obtain a display board with improved appearance by making the printing steps around the gradation inconspicuous.

  A vehicle instrument device to which the display board of the present invention is applied will be described as an embodiment. FIG. 1 is a front view of an instrument device including a tachometer 1 and a speedometer 2. FIG. 2 is a partial cross-sectional view of the tachometer 1 (cross section AA in FIG. 1). FIG. 3 is a partial cross-sectional view of a display board used in the tachometer 1, and FIG. 4 is a partial detail view showing a density area of the display board. In FIG. 1, the design of the speedometer 2 is omitted from the description, and the description of the speedometer 2 is also omitted.

  The instrument device includes a rigid circuit board 3, an instrument body 5 that is mounted on the back side of the circuit board 3 in a conductive state with the circuit board 3 and has a pivot shaft 4 that extends forward through the circuit board 3, A pointer 7 having an indicating portion 6 fixed to the tip end side of the rotating shaft 4 and a display portion such as a scale and a number indicating the engine speed of the vehicle disposed behind the pointer 7 and corresponding to the operation of the indicating portion 6 8 and the display board 9 having a gradation area GA (in the area surrounded by a broken line in FIG. 1) in which gradation is formed around the pointer 7 and the display board 9 disposed between the display board 9 and the circuit board 3 A holding member 10 to be held is provided.

  In addition, a synthetic resin cover 11 covering the back side of the circuit board 3, a black turn-back member 13 having an opening 12 which is disposed on the front side of the peripheral edge of the display board 9 and defines the visible region of the display board 9, and a display A colorless and transparent see-through plate 14 disposed on the front side of the plate 9 and the turn-back member 13, a pointer light-emitting diode 15 as a light source mounted on the circuit board 3 and illuminating the pointing portion 6 of the pointer 7, and a display plate The display panel light emitting diode 16 is provided as a light source for illuminating the display section 8 and the gradation area GA.

  The pointer 7 includes a pointer shaft 17 and a pointer cap 18 made of a light-shielding synthetic resin, in addition to the indicator 6 made of a colorless and transparent synthetic resin. A white foil (not shown) is hot stamped on the back surface of the instruction unit 6, and when the surroundings are bright such as daytime, the instruction unit 6 is visually recognized in white. Further, when the pointer light emitting diode 15 that emits white light, for example, when the surroundings are dark, such as at night, is turned on, the light guided to the pointing unit 6 is reflected by the white foil so that the pointing unit 6 is visually recognized in white. It has become.

  The holding member 10 is made of a light-shielding white synthetic resin, and includes an outer peripheral wall 19, a placement portion 20 on which the display plate 9 is placed, a cylindrical portion 21 that surrounds the pointer light emitting diode 15, and the like. Yes.

  The display board 9 has, for example, a blue transmissive display layer 23 printed on the surface side of a colorless and transparent substrate 22. The transmissive display layer 23 has a tone of the display unit 8 and also a tone of gradation. For example, a black base layer 24 (referred to as a first print layer) is provided on the transmissive display layer 23 excluding the display unit 8 and the gradation area GA by printing. Strictly speaking, the base layer 24 is provided except for a region where the display unit 8 (for example, a scale) is slightly thickened. Similarly, the gradation layer GA is provided with a base layer 24 except for a slightly widened area.

  Further, for example, a black ground color layer 26 which is the ground portion 25 is printed and formed so as to cover the base layer 24 except for the display portion 8 and the gradation region GA. By providing the ground color layer 26, the display portion 8 and the gradation area GA having a normal size are formed. As described above, the base layer 24 is provided to prevent the ground portion 25 from being seen through due to the occurrence of pinholes, and the region where the base layer 24 is provided is referred to as a first region R1.

  The ground color layer 26 is also a layer for forming gradation (referred to as a second print layer). In the gradation area GA, black ink is printed in, for example, a dot shape so that the lightness gradually changes from the numerical value side toward the center side of the display board 9 in the gradation area GA (the black print portion is gradually changed). Less). This black printing may be performed in the same process as the ground color layer 26 that becomes the ground portion 25 around the display portion 8. Since gradation in the present embodiment is the same as the conventional example (described in FIG. 7), description thereof is omitted. In the present embodiment, the ground color layer 26 that is the second print layer for forming gradation is provided in the entire gradation area GA. However, it is sufficient that the gradation is provided at least at the boundary X. There may be a portion (area) where there is no printed pattern. The boundary X refers to the boundary between the base layer 24, which is the first print layer, and a region where the base layer 24 is not provided, and is a region where the base layer 24 is not provided and is also a gradation region GA. Let the region be a second region R2.

  Further, the boundary X of the base layer 24 (region adjacent to the boundary X) is a coarse / dense region R3 in which the printing density gradually increases from dense toward the second region R2. For details, as shown in FIG. 4, the combination of a round shape and a rhombus makes the black print portion gradually become rougher from the display portion 8 side to the second region R2 side (gradation region GA side). The dense and dense area R3 after printing has a substantially net-like pattern.

  A colorless and transparent protective layer 27 is provided on the surface of the display board 9, and a through hole 28 through which the pointer shaft 17 of the pointer 7 is inserted is formed at the center.

  In the display board 9 configured in this way, the blue display part 8 is visually recognized on the black ground part 25, and the gradation area GA is black from the number (display part 8) side toward the center side of the display board 9. It is visually recognized as a gradation that gradually changes to blue. At this time, since the underlying layer 24 (first printed layer) at the boundary X is the dense region R3 in which the printed portion gradually decreases and becomes rougher toward the gradation region GA, the printing lines of the underlying layer 24 are continuous. And the underlayer 24 is less along the boundary X. Therefore, when the ground color layer 26 (second printed layer) is provided so as to cover the ground layer 24, a step h is partially generated on the surface of the ground color layer 26 as shown in FIG. However, when the display board 9 is viewed from the front, the step h line does not become a continuous straight line, and as the gradation area GA is approached, the step h gradually decreases to obtain a display board that is not noticeable and has a good appearance. Can do.

  When the surroundings are dark, such as at night, when a light emitting diode (not shown) that emits white light, for example, disposed on the back side of the display board 9 is turned on, the display unit 8 is transmitted and illuminated in blue, and the gradation area GA is The gradation transmissive illumination changes gradually from black to blue toward the center of the display board 9 from the numeral side. In the coarse / dense region R3, the portion where the base layer 24 is not provided is only the ground color layer 26. Even if partial transparency occurs in the ground color layer 26, it is regarded as part of the gradation because it is around the gradation area GA, and there is no particular sense of incongruity.

  Further, by making the base layer 24 and the ground color layer 26 black with the highest light shielding property, it is possible to easily suppress the light from being transmitted in a portion other than the transmissive portion (the display portion 8, the gradation region GA, etc.). A good display board can be obtained.

  In the above-described embodiment, the display board 9 is provided with the display unit 8. However, a gradation-only display board without the display unit may be used. Further, the base layer 24 and the ground color layer 26 do not necessarily have to be black, and the color tone is arbitrary as long as they are shielded from light by being overlapped, and may be different colors.

  Further, although the transmissive display layer 23 is provided on the front side of the colorless and transparent substrate 22, it may be provided on the back side, or the transmissive display layer may be omitted using the substrate as a colored transmissive material. In addition, the coarse / dense region R3 has a substantially net-like pattern. However, the print shape is not limited to a round shape or a rhombus shape as long as the printing density gradually becomes coarser from the dense shape. When the ground color layer 26 is provided in a substantially net-like pattern, the step h line on the surface of the ground color layer 26 does not appear as a continuous straight line, and the level difference due to printing is less noticeable.

The front view of the instrument apparatus to which the display board of this invention is applied. The fragmentary sectional view of the instrument device (AA cross section in FIG. 1). The fragmentary sectional view of the display board used for the instrument apparatus. The partial detail figure which shows the density area of the display board used for the same instrument apparatus. The front view which shows the conventional display board. The fragmentary sectional view of the display board. The partial detail figure which shows the gradation of the same display board.

Explanation of symbols

8 Display unit 9 Display board GA Gradation area 22 Substrate 23 Transparent display layer 24 Underlayer (first printing layer)
26 Ground color layer (second printed layer)
R1 First region R2 Second region X Boundary R3 Dense region

Claims (4)

  Covering the boundary between the substrate, the first printed layer provided in the first region on the substrate, and the second region not provided with the first printed layer, and the first printed layer; A display board comprising a second printed layer that forms a gradation at least at the border of the second region, and the print density is high with the border of the first print layer facing the second region. A display board characterized in that it is a dense region that gradually becomes coarser from   A substrate, a transparent colored layer provided on the substrate, a first printed layer provided in a first region on the transparent colored layer, and a second not provided with the first printed layer And a second printed layer that covers the first printed layer and forms a gradation at least at the border of the second region. The display board according to claim 1, wherein the density is a density area where the printing density gradually becomes coarser from the density toward the second area side.   The display board according to claim 1, wherein the dense region is a net-like pattern.   The display board according to any one of claims 1 to 3, wherein the first printed layer and the second printed layer are black.

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