JP2009068860A - Indicating plate for measuring instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indicating plate for a measuring instrument which enables switchover of indication by switching over lighting and extinguishing of a light source for illuminating the indicating plate in a manner of transmission, and enables indication of an indicative design with colors different from each other in lighting. <P>SOLUTION: The indicating plate 1 for the instrument has a substrate 2 having optical transparency, indicative layers 32 and 33 which are formed on the substrate 2 and which have the optical transparency and indicate the indicative design, and half-light-transmitting layers 34 which are formed on the visual observation side of the indicating layers 32 and 33 on the substrate 2 so that they cover the indicating layers 32 and 33 and which have the optical transparency and light-reflecting properties. This constitution makes it possible to provide the indicating plate for the instrument which enables switchover of indication by switching over lighting and extinguishing of the light source for illuminating the plate in the manner of transmission and also enables indication of the indicative design with colors different from each other in lighting. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an instrument display board capable of switching display by switching between turning on and off a light source for transmitted illumination.

  In recent years, various methods have been proposed to improve the appearance of an instrument display board. For example, an instrument display board is disclosed that can switch display by switching between turning on and off the light source for transmitted illumination (see Patent Document 1).

  The instrument display board is provided on the rear side of the transparent substrate, the light-shielding layer formed on the viewing-side front surface of the light-transmitting substrate, having an opening in the shape of the display design, and on the back side of the transparent substrate. And a textured surface for reflecting the light of the light source introduced from the side end surface of the translucent substrate to the light transmission part, and a metal-like metal-toned layer disposed behind the textured surface.

  When the light source is turned on, the light from the light source introduced from the side end face of the translucent substrate is reflected by the embossed surface and the reflected light is transmitted from the opening to the viewing side. indicate. On the other hand, when the light source is turned off, the extraneous light reflected by the metal tone layer is transmitted from the opening to the viewing side through the textured surface, so that the aperture is displayed in a metal tone by the reflected light from the metal tone layer.

As a result, by switching between turning on and off the light source that transmits and illuminates the instrument display board, the opening of the shape of the display design is displayed with the reflected light on the embossed surface and the metal adjusted with the reflected light on the metal tone layer. The display can be switched between the display and. Therefore, the display design can be switched by switching between turning on and off the light source that transmits and illuminates the instrument display board.
JP 2007-46987 A

  However, in Patent Document 1, it is difficult to display the display design with different colors at the time of lighting. For example, when turning on and displaying an opening representing a character in white and displaying an opening representing a scale in red, a red light transmission layer is formed on the back of the embossed surface corresponding to the opening representing the scale. Can be considered.

  However, the display at the time of turning on is a reflected light that is a mixture of the reflected light on the embossed surface and the red reflected light that is transmitted through the embossed surface and reflected on the light transmitting layer, so that the vermilion blur mixed with white The display is red. On the other hand, the display when the light source is extinguished is a display in which red is mixed into the metallic tone display by the extraneous light reflected by the metallic tone layer being transmitted through the light transmission layer. For this reason, red is mixed in the display when the light source is turned on and off, and switching of the display becomes a blurred white color with vermilion. Therefore, it is difficult to display the display design in different colors when turning on.

  The present invention has been made in consideration of such circumstances, and the display can be switched by switching on and off the light source that illuminates and transmits the instrument display board. An object of the present invention is to provide an instrument display board capable of displaying a display design in color.

  In order to achieve the above object, the present invention employs the following technical means.

  The instrument display board according to claim 1 is a light-transmitting substrate, a display layer that is formed on the substrate and displays a display design with light transmittance, and is displayed on the viewing side of the display layer in the substrate. It is characterized by comprising a semi-transparent layer formed so as to cover the layer and having light transmissivity and light reflectivity.

  In this configuration, since the semi-transparent layer is formed on the viewing side of the display layer that has light transmittance and displays the display design so as to cover the display layer, the light source for illuminating and transmitting the instrument display board The light is transmitted and illuminated through the display layer, and the transmitted illumination light is transmitted through the semi-transmissive layer. Thereby, when the light source is turned on, display layers having different display colors can be displayed as display designs having different display colors.

  Further, when the light source that transmits and illuminates the instrument display board is extinguished, extraneous light is reflected by the semi-transparent layer, and the semi-transparent layer is displayed. Therefore, the display can be switched between the display by the display layer and the display by the semi-transparent layer by switching between turning on and off the light source.

  As a result, an instrument display board is provided that can switch the display by turning on and off the light source that illuminates the instrument display board, and can display display designs in different colors when turned on. it can.

  The instrument display board according to claim 2 is characterized in that the display layer and the semi-transparent layer are formed in the shape of a display design. This makes it possible to switch between display by the display layer and display by the semi-transparent layer without switching the shape of the display design by switching between turning on and off the light source that illuminates the instrument display board. Become.

  The instrument display board according to claim 3, wherein the convex portion having light permeability is formed on the front side of the viewing side of the substrate, and the display layer is one of the rear surface side of the convex portion and the top surface of the convex portion on the rear surface of the substrate. It is characterized by being formed. As a result, light from the light source that illuminates and transmits the instrument display board can be emitted from the top surface of the convex portion, so that the display design can be displayed three-dimensionally by the convex portion while obtaining the above-described effects. Is possible.

  The instrument display board according to claim 4 is formed on the front side of the viewing side, and includes a background layer constituting a background of the convex portion and a side layer formed on the side surface of the convex portion. Thereby, it becomes possible to display a convex part more three-dimensionally.

  The instrument display board according to claim 5 is characterized in that a recess is formed on the front side of the substrate on the viewing side, and the display layer is formed on one of the back side of the recess and the bottom surface of the recess on the back side of the substrate. To do. Thereby, since it becomes possible to emit the light of the light source which permeate | transmits illumination of the instrument display board from the bottom face of a recessed part, it becomes possible to display a display design in three dimensions by a recessed part.

  The instrument display board according to claim 6 is formed on the front side of the viewing side, and includes a background layer constituting a background of the recess and a side layer formed on the side surface of the recess. Thereby, it becomes possible to display a recessed part more three-dimensionally.

  The instrument display board according to claim 7 is characterized in that the semi-transparent layer has a metallic display color. As a result, the display when the light source that transmits and illuminates the instrument display board is turned off can be made into a metal-like high-quality display.

  Hereinafter, an example in which the instrument display board according to the present invention is applied to a combination meter mounted on an automobile will be described with reference to the drawings.

  A combination meter 10 shown in FIG. 1 constitutes a speedometer that displays the traveling speed of the automobile, and includes a dial 1 that is a display board for an instrument according to an embodiment of the present invention, and a pointer 20. The pointer 20 rotates along the viewing side front surface of the dial 1, and the dial 1 has a first convex portion 4 that is a convex portion formed in the shape of a character that is a display design, and a scale that is a display design. And a second convex portion 5 that is a convex portion formed in the shape. The combination meter 10 displays the traveling speed by the dial 1 and the pointer 20 that rotates by pointing to the first convex portion 4 and the second convex portion 5.

  As shown in FIG. 3, the dial 1 is a substrate 2, a first protrusion 4, a second protrusion 5, a first background layer 31 that is a background layer, a side layer 42, and a display layer. A character layer 32, a scale layer 33 as a display layer, and a half mirror layer 34 as a semi-transparent layer are provided.

  The board | substrate 2, the 1st convex part 4, and the 2nd convex part 5 have a light transmittance, and the board | substrate 2 is formed from a colorless and transparent polycarbonate resin etc., for example. The 1st convex part 4 and the 2nd convex part 5 are formed in the visual side front surface 21 of the board | substrate 2 by digital printing, for example from a colorless and transparent acrylic resin etc. Digital printing is also called inkjet printing. For example, colorless and transparent acrylic resin-based ink is repeatedly ejected as small dots by a piezo jet method or thermal jet method from a small hole called a nozzle provided in a head (not shown). It is a printing method.

  For this reason, digital printing can be performed in various shapes on various three-dimensional structures. In addition, since digital printing can repeatedly accumulate small dots, it can be printed with a thicker shape than screen printing or pad printing.

  In addition, although it is also possible to form the 1st convex part 4 and the 2nd convex part 5 by resin molding integrally with the board | substrate 2, compared with this manufacturing method, according to digital printing, it is various shapes. It becomes possible to form the 1st convex part 4 and the 2nd convex part 5 easily.

  The 1st background layer 31 which comprises the background of the 1st convex part 4 and the 2nd convex part 5 is a light-shielding dark gray background layer, for example, and is formed in the visual side front surface 21 of the board | substrate 2 by digital printing. . In addition, when forming the 1st background layer 31 before forming the 1st convex part 4 and the 2nd convex part 5, the 1st background layer 31 can be formed by screen printing. In this case, after forming the 1st background layer 31 by screen printing etc., the 1st convex part 4 and the 2nd convex part 5 are formed by digital printing.

  The side layers 42 and 52 are, for example, a light-shielding silver color, and are formed on the side surface 41 of the first convex portion 4 and the side surface 51 of the second convex portion 5 by digital printing, respectively.

  The character layer 32 for displaying characters has a light-transmitting white color, for example, and is formed in a shape larger than the top surface 43 of the first convex portion 4 on the back surface side of the first convex portion 4 on the back surface 22 of the substrate 2. The scale layer 33 for displaying the scale has a light-transmitting red color, for example, and is formed on the back surface 22 of the substrate 2 on the back surface side of the second convex portion 5 in a shape larger than the top surface 53 of the second convex portion 5. Is done. The half mirror layer 34 has a light transmission property and a light reflection property, and has a metallic display color. On the viewing side of the character layer 32 and the scale layer 33 on the substrate 2, the character layer 32 and the scale layer, respectively. 33 is formed to cover 33. For example, a black second background layer 35 is formed so as to cover the background portions of the character layer 32, the scale layer 33, and the half mirror layer 34 on the back surface 22.

  These can be formed after the first background layer 31, the first convex portion 4, the second convex portion 5, and the side surface layers 42, 52 are formed, but the first background layer 31 and the first convex portion are formed. It is also possible to form the portion 4, the second convex portion 5, and the side layers 42 and 52 before forming them. Specifically, the half mirror layer 34 is formed, the character layer 32 and the scale layer 33 are formed on the half mirror layer 34, and the background portion of the character layer 32, the scale layer 33, and the half mirror layer 34 is covered. A second background layer 35 is formed. These are formed by screen printing or the like.

  The character layer 32 and the half mirror layer 34 formed thereon are formed so as to be visually recognized in the shape of characters. Specifically, the character layer 32 and the half mirror layer 34 formed thereon are formed in a shape larger than the top surface 43 of the first convex portion 4, but are shielded by the first background layer 31 and the side layer 42. ing. For this reason, the character layer 32 and the half mirror layer 34 are visually recognized through the openings of the first background layer 31 and the side layer 42, that is, through the top surface 43 of the first convex portion 4 in the shape of characters. That is, it can be said that the character layer 32 and the half mirror layer 34 formed thereon are formed on the substrate 2 in the shape of characters by the first background layer 31 and the side layer 42.

  The scale layer 33 and the half mirror layer 34 formed on the scale layer 33 are formed so as to be visually observed in the shape of the scale. Specifically, the scale layer 33 and the half mirror layer 34 formed thereon are formed in a shape larger than the top surface 53 of the second convex portion 5, but are shielded from light by the first background layer 31 and the side layer 52. ing. For this reason, the scale layer 33 and the half mirror layer 34 are visually observed through the openings of the first background layer 31 and the side surface layer 52, that is, through the top surface 53 of the second convex portion 5. That is, it can be said that the scale layer 33 and the half mirror layer 34 formed thereon are formed on the substrate 2 in the form of a scale by the first background layer 31 and the side layer 52.

  Here, a light emitting diode 30 that transmits and illuminates the dial 1 is disposed behind the dial 1 and mounted on the printed circuit board 40. For example, white light emitted from the light emitting diode 30 is transmitted through the character layer 32 according to the optical path P <b> 1, and the transmitted illumination light is transmitted through the half mirror layer 34, the substrate 2, and the first convex portion 4. Thereby, the character layer 32 is lit and displayed in white in the shape of characters through the top surface 43 of the first convex portion 4. The white light emitted from the light emitting diode 30 is transmitted through the scale layer 33 according to the optical path P2, and the transmitted illumination light is transmitted through the half mirror layer 34, the substrate 2, and the second convex portion 5. Thereby, the scale layer 33 is lit and displayed in red in the shape of a scale through the top surface 53 of the second convex portion 5.

  Therefore, when the light emitting diode 30 is turned on, the white character layer 32 and the red scale layer 33 can be displayed as different white letters and red scales.

  On the other hand, when the light emitting diode 30 is extinguished, extraneous light is reflected by the half mirror layer 34, and this reflected light passes through the substrate 2 and the first convex portion 4 and through the substrate 2 and the second convex portion 5. . By the transmitted light of the substrate 2 and the first convex portion 4, the half mirror layer 34 is displayed in a metallic form in the form of letters through the top surface 43 of the first convex portion 4. Further, the half mirror layer 34 is displayed in a metallic form in a scaled shape through the top surface 53 of the second convex portion 5 by the transmitted light of the substrate 2 and the second convex portion 5. Therefore, the display switching between the display by the character layer 32 and the scale layer 33 and the display by the half mirror layer 34 is performed without switching the shape of the character and the scale by switching the light emitting diode 30 between turning on and off. Is possible.

  As a result, it is possible to switch the display between the display by the character layer 32 and the scale layer 33 and the display by the half mirror layer 34 by switching the lighting and extinction of the light emitting diode 30. The white character layer 32 and the red scale layer 33 can be lit and displayed as different white characters and red scales.

  Moreover, it becomes possible to display a character and a scale in three dimensions by the convex parts 4 and 5. In addition, the first background layer 31 and the side layers 42 and 52 can display the convex portions 4 and 5 in a three-dimensional manner, and as a result, the characters and scales can be displayed in a three-dimensional manner. .

  Further, it is possible to display the characters and scales when the light emitting diode 30 is extinguished with a metallic tone.

  As described above, the dial 1 which is the instrument display board according to the present embodiment includes the light-transmitting substrate 2 and the display that is formed on the substrate 2 and has the light-transmitting property and the display design. The character layer 32 and the scale layer 33, which are layers, are formed so as to cover the character layer 32 and the scale layer 33 on the viewing side of the character layer 32 and the scale layer 33 in the substrate 2, and have light transmittance and light reflectivity. And a half mirror layer 34 which is a semi-transparent layer.

  Accordingly, it is possible to provide an instrument display board that can switch the display by switching between turning on and off the light source that transmits and illuminates the instrument display board, and that can display the display design in different colors when turned on. .

(First modification)
In the first modification, instead of the first convex portion 4 and the second convex portion 5, as shown in FIG. 4, the first concave portion 6 that is a concave portion formed in the shape of a character and the shape of a scale are formed. The second concave portion 7 which is a concave portion is formed on the viewing-side front surface 21 of the substrate 2 by resin molding integrally with the substrate 2 having translucency.

  The first background layer 31 constituting the background of the first recess 6 and the second recess 7 is, for example, a dark gray background layer having a light shielding property, and is formed on the viewing-side front surface 21 of the substrate 2 by screen printing or the like. The side layers 62 and 72 are, for example, a light-shielding silver color, and are formed on the side surface 61 of the first recess 6 and the side surface 71 of the second recess 7 by digital printing, respectively.

  The character layer 32 has a light-transmitting white color, for example, and is formed on the back surface 22 of the substrate 2 on the back surface side of the first recess 6 so as to be larger than the bottom surface 63 of the first recess 6. For example, it has a transparent red color and is formed on the back surface 22 of the substrate 2 on the back surface side of the second recess 7 so as to be larger than the bottom surface 73 of the second recess 7. The half mirror layer 34 is formed on the substrate 2 on the viewing side of the character layer 32 and the scale layer 33 so as to cover the character layer 32 and the scale layer 33, respectively. For example, a black second background layer 35 is formed so as to cover the background portions of the character layer 32, the scale layer 33, and the half mirror layer 34 on the back surface 22.

  These can be formed after the first background layer 31 and the side layers 62 and 72 are formed, but they are formed before the first background layer 31 and the side layers 62 and 72 are formed. Is also possible.

  The character layer 32 and the half mirror layer 34 formed thereon are formed so as to be visually recognized in the shape of characters. Specifically, the character layer 32 and the half mirror layer 34 formed thereon are formed in a shape larger than the bottom surface 63 of the first recess 6, but are shielded from light by the first background layer 31 and the side layer 62. . For this reason, the character layer 32 and the half mirror layer 34 are visually recognized in the shape of characters through the openings of the first background layer 31 and the side surface layer 62, that is, through the bottom surface 63 of the first recess 6. That is, it can be said that the character layer 32 and the half mirror layer 34 formed thereon are formed on the substrate 2 in the shape of characters by the first background layer 31 and the side layer 62.

  The scale layer 33 and the half mirror layer 34 formed on the scale layer 33 are formed so as to be visually observed in the shape of the scale. Specifically, the scale layer 33 and the half mirror layer 34 formed thereon are formed in a shape larger than the bottom surface 73 of the second recess 7, but are shielded by the first background layer 31 and the side layer 72. . For this reason, the scale layer 33 and the half mirror layer 34 are visually observed through the openings of the first background layer 31 and the side layer 72, that is, through the bottom surface 73 of the second recess 7. That is, it can be said that the scale layer 33 and the half mirror layer 34 formed thereon are formed on the substrate 2 in the form of a scale by the first background layer 31 and the side layer 72.

  For example, white light emitted from the light emitting diode 30 illuminates the character layer 32 along the optical path P <b> 3, and the transmitted illumination light passes through the half mirror layer 34, the substrate 2, and the first recess 6. As a result, the character layer 32 is lit and displayed in white in the shape of characters through the bottom surface 63 of the first recess 6. Further, the white light emitted from the light emitting diode 30 is transmitted through the scale layer 33 according to the optical path P4, and the transmitted illumination light is transmitted through the half mirror layer 34, the substrate 2, and the second recess 7. Thereby, the scale layer 33 is lit and displayed in red in the shape of a scale through the bottom surface 73 of the second recess 7.

  Therefore, when the light emitting diode 30 is turned on, the white character layer 32 and the red scale layer 33 can be displayed as different white letters and red scales.

  On the other hand, when the light emitting diode 30 is extinguished, extraneous light is reflected by the half mirror layer 34, and this reflected light passes through the substrate 2 and the first recess 6, and the substrate 2 and the second recess 7. Due to the light transmitted through the substrate 2 and the first recess 6, the half mirror layer 34 is displayed in a metallic form in the form of characters through the bottom surface 63 of the first recess 6. Further, the half mirror layer 34 is displayed in a metallic form in a scaled shape through the bottom surface 73 of the second recess 7 by the transmitted light of the substrate 2 and the second recess 7.

  Therefore, the display switching between the display by the character layer 32 and the scale layer 33 and the display by the half mirror layer 34 is performed without switching the shape of the character and the scale by switching the light emitting diode 30 between turning on and off. Is possible.

  As a result, it is possible to switch the display between the display by the character layer 32 and the scale layer 33 and the display by the half mirror layer 34 by switching the lighting and extinction of the light emitting diode 30. The white character layer 32 and the red scale layer 33 can be lit and displayed as different white characters and red scales.

  Moreover, it becomes possible to display a character and a scale in three dimensions by the recessed portions 6 and 7. Further, the first background layer 31 and the side layers 62 and 72 can display the recesses 6 and 7 in a three-dimensional manner, and as a result, the characters and scales can be displayed in a three-dimensional manner.

(Second modification)
In the above-described example, the convex portions 4 and 5 and the concave portions 6 and 7 are formed in the shape of characters or scales that are display designs, but the present invention is not limited thereto. For example, as shown in FIG. 5 and FIG. 6, it is also possible to form a third convex portion 8 that is a convex portion in a columnar shape to provide a window for displaying a warning.

  The first background layer 31 constituting the background of the third convex portion 8 is, for example, a dark gray background layer having a light-shielding property, and is formed on the viewing-side front surface 21 of the substrate 2 by screen printing or the like. The three convex portions 8 are formed by digital printing. The side layer 82 is, for example, a light-shielding silver color, and is formed on the side 81 of the third convex portion 8 by digital printing. The side layer 82 is formed so that the upper surface 84 of the side layer 82 is inclined with respect to the viewing-side front surface 21 of the substrate 2.

  On the back surface 22, for example, a second background layer 35 having a black light-shielding property and having a warning mark-shaped opening 351 that is a display design is formed. A warning layer 36 that is a display layer for displaying a warning has a light-transmitting red color, for example, and is formed on the back surface 22 of the substrate 2 so as to fill the opening 351 on the back surface side of the third convex portion 8.

  The half mirror layer 34 is formed on the viewing side of the warning layer 36 so as to cover the warning layer 36 in the opening 351. Specifically, the half mirror layer 34 is formed on the top surface 83 of the third convex portion 8 by digital printing.

  The second background layer 35 and the warning layer 36 can be formed after the first background layer 31, the third convex portion 8, the half mirror layer 34, and the side surface layer 82 are formed. It is also possible to form the first convex portion 31, the third convex portion 8, the half mirror layer 34, and the side surface layer 82 before forming them.

  The warning layer 36 is formed so as to be viewed with a warning mark shape. Specifically, since the warning layer 36 is shielded from light by the second background layer 35, the warning layer 36 is visually observed through the opening 351 in a warning mark shape. That is, it can be said that the warning layer 36 is formed on the substrate 2 with the warning mark shape by the second background layer 35.

  Here, the light emitting diode 50 that transmits and illuminates the warning layer 36 is disposed behind each warning layer 36 and mounted on the printed circuit board 40. For example, white light emitted from the light emitting diode 50 is transmitted through the warning layer 36 in the opening 351 according to the optical path P5, and this transmitted illumination light passes through the substrate 2, the third convex portion 8, and the half mirror layer 34. . As a result, the warning layer 36 is lit and displayed in red with a warning mark shape. In addition, as described above, in FIG. 3, the white light emitted from the light emitting diode 30 illuminates the character layer 32 along the optical path P <b> 1, and this transmitted illumination light is transmitted from the half mirror layer 34, the substrate 2, and the first light. The projection 4 is transmitted. As a result, the scale layer 33 is lit and displayed in white in the shape of characters through the top surface 43 of the first convex portion 4.

  Therefore, when the light emitting diodes 30 and 50 are turned on, the white character layer 32 and the red warning layer 36 can be displayed as different white characters and red warnings.

  On the other hand, when the light emitting diodes 30 and 50 are extinguished, the extraneous light is reflected by the half mirror layer 34 and displayed in a metallic style in FIG. Further, as described above, in FIG. 3, extraneous light is reflected by the half mirror layer 34, and this reflected light is transmitted through the substrate 2 and the first convex portion 4. By the transmitted light of the substrate 2 and the first convex portion 4, the half mirror layer 34 is displayed in a metallic form in the form of letters through the top surface 43 of the first convex portion 4.

  Therefore, the display can be switched between the display by the character layer 32 and the warning layer 36 and the display by the half mirror layer 34 by switching the light emitting diodes 30 and 50 between turning on and off.

  As a result, it is possible to switch the display between the display by the character layer 32 or the warning layer 36 and the display by the half mirror layer 34 by switching between turning on and off the light emitting diodes 30 and 50. At the time of turning on, the white character layer 32 and the red warning layer 36 can be lit and displayed as different white characters and red warnings.

  In addition, it is possible to display characters and warnings three-dimensionally by the convex portions 4 and 8. In addition, the first background layer 31 and the side layers 42 and 82 enable the projections 4 and 8 to be displayed more three-dimensionally. As a result, it is possible to display characters and warnings more three-dimensionally. .

  Moreover, since the upper surface 84 of the side layer 82 is inclined with respect to the viewing-side front surface 21 of the substrate 2, the appearance of the third convex portion 8 can be enhanced.

  Note that the second background layer 35 and the warning layer 36 may be formed between the top surface 83 of the third convex portion 8 and the half mirror layer 34. Also by this, the same effect as described above can be obtained.

  In the above example, the half mirror layer 34 is formed by screen printing in FIGS. 3 and 4, but it can also be formed by metal foil hot stamping, metal vapor deposition, or the like.

  3 and 4, when the half mirror layer 34 is formed by screen printing, the half mirror layer 34 may not be mirror-like but may have a somewhat satin finish. However, in this case, by making the back surface 22 of the substrate 2 into a mirror surface, it becomes possible to secure a mirror surface feeling of the half mirror layer 34, and display of characters and scales when the light emitting diode 30 is extinguished, It is possible to display a metallic-like high-quality display.

  Further, in FIG. 3, the character layer 32 and the half mirror layer 34 can be formed on the top surface 43 of the first convex portion 4, and the scale layer 33 and the half mirror layer 34 are formed on the second convex portion 5. It can be formed on the top surface 53. Also by this, the same effect as described above can be obtained.

  In FIG. 4, the character layer 32 and the half mirror layer 34 can be formed on the bottom surface 63 of the first recess 6, and the scale layer 33 and the half mirror layer 34 are formed on the bottom surface 73 of the second recess 7. It is possible to form. Also by this, the same effect as described above can be obtained.

  Moreover, although the convex parts 4, 5, and 8 and the concave parts 6 and 7 were formed in the above-mentioned example, it is also possible not to form these. Also by this, the same effect as described above can be obtained.

  Further, instead of the metallic half mirror layer 34, it is also possible to form a non-metallic semi-transparent layer having light transmissivity and light reflectivity. Also by this, the same effect as described above can be obtained.

  In addition, it is not restricted to the example mentioned above, These combinations and other various modifications can be considered.

FIG. 1 is a partial front view of a combination meter 10 including a dial 1 which is an instrument display board according to an embodiment of the present invention. FIG. 2 is an enlarged view of a portion II in FIG. 3 is an enlarged sectional view taken along line III-III in FIG. FIG. 4 is an enlarged cross-sectional view showing a modification of FIG. FIG. 5 is a front view showing a modification of FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG.

Explanation of symbols

10 combination meter, 1 dial (instrument display board), 2 substrate 21 front side, 22 back side, 31 first background layer (background layer), 32 character layer (display layer)
33 scale layer (display layer), 34 half mirror layer (semi-transmissive layer), 35 second background layer 351 opening, 36 warning layer (display layer), 4 first convex part (convex part)
41 side surface, 42 side surface layer, 43 top surface, 5 second convex portion (convex portion), 51 side surface 52 side surface layer, 53 top surface, 6 first concave portion (concave portion), 61 side surface, 62 side surface layer 63 bottom surface, 7 first 2 concave portions (concave portions), 71 side surfaces, 72 side surface layers, 73 bottom surface 8 third convex portions (convex portions), 81 side surfaces, 82 side surface layers, 83 top surfaces, 84 top surfaces 20 pointers, 30, 50 light emitting diodes, 40 printed circuit boards

Claims (7)

A substrate having optical transparency;
A display layer that is formed on the substrate and has a light transmission property and displays a display design;
An instrument display board, comprising: a semi-transparent layer that is formed so as to cover the display layer on the viewing side of the display layer and has light transmittance and light reflectivity.   The instrument display board according to claim 1, wherein the display layer and the semi-translucent layer are formed in the shape of the display design. A convex part having optical transparency is formed on the front side of the substrate on the viewing side,
3. The instrument display board according to claim 1, wherein the display layer is formed on one of the back surface side of the convex portion and the top surface of the convex portion on the back surface of the substrate. A background layer formed on the front side of the viewing side and constituting a background of the convex part;
The instrument display board according to claim 3, further comprising a side layer formed on a side surface of the convex portion. A recess is formed on the front side of the substrate on the viewing side,
3. The instrument display board according to claim 1, wherein the display layer is formed on one of the back surface side of the recess and the bottom surface of the recess on the back surface of the substrate. A background layer formed on the front side of the viewing side and constituting a background of the recess;
The instrument display board according to claim 5, further comprising a side layer formed on a side surface of the recess.   7. The instrument display board according to claim 1, wherein the semi-translucent layer has a metallic display color.

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