JP2016035479A - Display board and display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display board and a display apparatus that make basic color dots inconspicuous.SOLUTION: Indicator driving parts each have a rotation shaft that rotates an indicator. A display board 40 has through holes at positions corresponding to the rotation shafts and indication parts 41 shown on the indicators. Light emitting devices emit illumination light illuminating while transmitting the display board 40. The display board 40 has a translucent substrate 43, and a transparent design layer 47 that is formed on the rear face side of the translucent substrate 43 to display a chromatic color pattern with a number of basic color dots. The display board 40 has a light diffusion layer 46 that is formed on the front face side of the translucent substrate 43.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a display board having a chromatic pattern and a display device including the display board.

  Conventionally, a display device has been proposed in which a decorative pattern formed of four basic color dots of C (cyan), M (magenta), Y (yellow), and K (black) is provided on the display plate. For example, it is disclosed in Patent Document 1. Such a display board displays a decorative pattern in color by printing minute basic color dots of each color on a base material.

JP 2011-198721 A

However, the decorative pattern provided on the display panel has a problem that the basic color dots are conspicuous and the decorative quality is not necessarily high. That is, if the basic color dots are not sufficiently small, the decorative pattern may be visually recognized as a collection of a large number of points, which is not preferable in appearance.
The present invention has been made in view of this problem, and provides a display panel and a display device in which basic color dots are not conspicuous.

  The present invention includes a translucent substrate 43 and a translucent design layer 47 that is formed on the rear surface side of the translucent substrate 43 and displays a chromatic pattern with a large number of basic color dots.

  Further, according to the present invention, the pointer 10, the pointer driving unit 22 having the rotating shaft 22 a for rotating the pointer 10, and the through hole 40 c are formed at locations corresponding to the rotating shaft 22 a. The display device includes a display board 40 having an index portion 41 instructed by the light emitting element 24 that emits illumination light that transmits and illuminates the display board 40, and the display board 40 is a translucent substrate. 43 and a transparent design layer 47 that is formed on the rear surface side of the translucent substrate 43 and displays a chromatic pattern with a large number of basic color dots.

  Further, according to the present invention, the display panel 40 includes a light diffusion layer 46 formed on the front side of the translucent substrate 43.

  Further, according to the present invention, the display panel 40 has fine irregularities 43 b formed on the front surface of the translucent substrate 43.

  In the present invention, the basic color dots include C (cyan), M (magenta), and Y (yellow) dots.

  By forming the transmissive design layer on the rear surface side of the translucent substrate, the basic color dots of the transmissive design layer become inconspicuous.

Sectional drawing which shows 1st embodiment of this invention. The front view which shows embodiment same as the above. The principal part expanded sectional view which shows embodiment same as the above. The expanded sectional view which shows embodiment same as the above. The front view which shows other embodiment of this invention. The principal part enlarged view which shows other embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The vehicle display device includes a pointer 10, a circuit board 20, a case body 30, a display plate 40, a liquid crystal display 50, and a rear cover 60.

  The pointer 10 includes an instruction portion 11 made of a translucent resin, a pointer cap 12 made of an opaque resin, a boss portion 13 into which the rotating shaft 22a is press-fitted, and a pointer seat 14 on which the indication portion 11 is placed. Have. The pointer 10 instructs the indicator unit 41 of the display board 40 by the instruction unit 11. The boss 13 and the pointer seat 14 of the pointer 10 are integrally formed of black resin. The circuit board 20 includes a board body 21, a pointer driving unit 22 mounted on the rear surface side of the board body 21, and light emitting elements 24 and 25 mounted on the surface side of the board body 21. 40 is arranged on the rear side.

  The substrate body 21 is formed of a hard printed circuit board in which a driving circuit for driving the pointer driving unit 22 and a light emitting circuit for emitting the light emitting elements 24 and 25 are formed on a flat glass epoxy base material. The drive circuit and the light emitting circuit are each composed of a wiring pattern, a resistor, a capacitor, and the like. The drive circuit drives the pointer drive unit 22 based on a control signal supplied from the control unit. The light emitting circuit causes the light emitting elements 24 and 25 to emit light based on a control signal supplied from the control unit.

  The pointer driving unit 22 includes a movable magnet type driving device, a stepping motor, and the like. The rotation shaft 22 a of the pointer driving unit 22 is inserted into a through hole 21 a formed in the substrate body 21, and the pointer 10 is attached to the rotation shaft 22 a of the pointer driving unit 22. The boss portion 13 of the pointer 10 is inserted into a through hole 40 c formed in the display board 40. The through hole 40c of the display board 40 is formed at a location corresponding to the rotating shaft 22a of the pointer driving unit 22 and has a circular shape when viewed from the front.

  The drive circuit of the substrate body 21 drives the pointer driving unit 22 based on a control signal supplied from the control unit, and the pointer 10 rotates the rotation shaft 22a at a rotation angle corresponding to the control signal. As a result, the pointer 10 rotates at a predetermined rotation angle corresponding to the vehicle speed, and the instruction unit 11 of the pointer 10 instructs the indicator unit 41 of the display board 40.

  Each of the light emitting elements 24 and 25 includes one or more light emitting diodes. The light emitting element 24 illuminates and transmits the display panel 40. The light emitting element 25 shines the instruction unit 11 of the pointer 10. The light emitting elements 24 and 25 are driven based on a control signal supplied from the control unit, and are turned on / off according to an illumination switch or the like operated by a vehicle driver.

  The case body 30 is made of a white synthetic resin (for example, polypropylene), and the circuit board 20 is fixed to the case body 30. The case body 30 has a vertical part 31, an inclined part 32, a parallel part 33, an inclined part 34, and a vertical part 35. The vertical portion 31 of the case body 30 has a cylindrical shape, the front end is in contact with the rear surface of the display panel 40, and the rear end is in contact with the front surface of the circuit board 20. The vertical portion 31 of the case body 30 is a light shielding wall that prevents the illumination light emitted from the light emitting element 24 and the illumination light emitted from the light emitting element 25 from being mixed.

  The inclined portion 32 of the case body 30 has a shape that spreads in an inverted conical shape from the outer peripheral surface of the vertical portion 31. The inclined portion 32 of the case body 30 reflects the illumination light emitted from the light emitting element 24 toward the parallel portion 33 and the inclined portion 34. The parallel part 33 of the case body 30 has a flat plate shape parallel to the display panel 40. The inclined portion 34 of the case body 30 has an inverted conical shape and is continuous with the outer peripheral end of the parallel portion 33. The inclined portion 34 of the case body 30 reflects the illumination light emitted from the light emitting element 24 toward the display plate 40. The vertical portion 35 of the case body 30 has a cylindrical shape, and the rear end is in contact with the front surface of the circuit board 20. The vertical portion 35 of the case body 30 is continuous with the outer peripheral end of the inclined portion 34. The vertical portion 35 of the case body 30 has a front end in contact with the rear surface of the display board 40 and a rear end in contact with the front surface of the circuit board 20.

  The display board 40 includes an index part 41 and a transmissive display part 42. The indicator portion 41 of the display panel 40 is arranged in an arc shape with the through hole 40c as the center, and is transmitted and illuminated by the illumination light emitted from the light emitting element 24. The transmissive display unit 42 of the display panel 40 displays a chromatic pattern, and is transmissively illuminated by the illumination light emitted from the light emitting element 24. The pattern of the transmissive display part 42 is a radial decorative pattern centered on the through hole 40c.

  The display board 40 is obtained by forming various printing layers on the front and rear surfaces of a light-transmitting substrate 43 made of a light-transmitting resin such as polycarbonate. On the front surface of the translucent substrate 43, a white layer 44, a black layer 45, and an overcoat layer 46 are formed by screen printing. An opening 45 a is formed in the black layer 45, and the opening 45 a serves as the indicator portion 41. The indicator portion 41 of the display board 40 is visually recognized in white by the white layer 44. The black layer 45 is not formed on the indicator portion 41 and the transmissive display portion 42 of the display board 40. The overcoat layer 46 is formed over substantially the entire area of the translucent substrate 43 so as to cover the white layer 44 and the black layer 45. On the front surface of the overcoat layer 46, fine irregularities 46b are formed.

  On the rear surface of the translucent substrate 43, a transmissive design layer 47, a white layer 48, and a light shielding layer 49 are formed by screen printing. The transmissive design layer 47 is composed of a large number of fine basic color dots formed on the rear surface of the translucent substrate 43, and the basic color dots are C (cyan), M (magenta), and Y (yellow). , K (black). The transparent design layer 47 is not formed on the indicator portion 41 of the display panel 40. The white layer 48 is formed over substantially the entire area of the translucent substrate 43. The light shielding layer 49 is formed on the rear surface of the white layer 48. The light shielding layer 49 is not formed on the indicator portion 41 and the transmissive display portion 42 of the display panel 40.

  A white layer 44 and an overcoat layer 46 are sequentially formed on the indicator portion 41 of the display panel 40. A black layer 45 is formed around the indicator portion 41. A transmissive design layer 47 and a white layer 48 are sequentially formed on the transmissive display portion 42 of the display panel 40. In the center of the display panel 40, a rectangular window 40d for visually recognizing the image of the liquid crystal display 50 is formed.

  The liquid crystal display 50 is disposed between two pointer-type meters (speedometer and tachometer). The liquid crystal display 50 includes a liquid crystal display panel 51, a connection member 52, an optical sheet 53, and a case body 54. The liquid crystal display panel 51 has polarizing plates attached to both front and rear surfaces of a liquid crystal cell in which liquid crystal is sealed in a pair of glass substrates on which transparent electrodes are formed. The liquid crystal display panel 51 displays vehicle information such as the accumulated travel distance.

  The connection member 52 is made of a metal pin, and one end is electrically connected to the liquid crystal display panel 51 and the other end is electrically connected to the circuit board 20 by solder. The optical sheet 53 is formed by appropriately combining a light diffusion film, a brightness enhancement film, and the like, and is disposed on the rear surface of the liquid crystal display panel 51. The case body 54 is made of a white resin. The liquid crystal display panel 51 is transmitted and illuminated by a light emitting element (not shown) mounted on the front surface of the circuit board 20.

  According to the present embodiment, since the transmissive design layer 47 is formed on the rear surface side of the translucent substrate 43, the basic color dots of the transmissive design layer 47 are not noticeable. Further, by providing the overcoat layer 46 having the fine unevenness 46b, the basic color dots of the transmissive design layer 47 become inconspicuous.

  In addition, this invention is not limited to this embodiment, A various deformation | transformation is possible. For example, as in another embodiment shown in FIG. 5, the main scale 41 a of the index section 41 is displayed in white by the white layer 46, and the sub-scale 41 b of the index section 41 is displayed in a single color by the design layer 47 (for example, light blue ).

  In the present embodiment, the basic color dots of the design layer 47 are composed of four color dots of C (cyan), M (magenta), Y (yellow), and K (black). The basic color dots of the design layer 47 may be composed of dots of three colors C (cyan), M (magenta), and Y (yellow), or may be composed of dots of any two colors. Also good. Further, the overcoat layer 46 may be omitted, and for example, fine irregularities 43b may be formed on the front surface of the translucent substrate 43 as in another embodiment shown in FIG. Further, a light diffusion layer may be provided between the translucent substrate 43 and the transmissive design layer 47.

DESCRIPTION OF SYMBOLS 10 Pointer 22 Pointer drive part 22a Rotating shaft 24 Light emitting element 25 Light emitting element 40 Display board 40c Through-hole 41 Indicator part 42 Transmission display part 43 Translucent substrate 46 Overcoat layer (light diffusion layer)
47 Transparent design layer

Claims (5)

  A display board comprising: a light-transmitting substrate; and a transparent design layer formed on the rear surface side of the light-transmitting substrate and displaying a chromatic pattern by a large number of basic color dots. A pointer, a pointer driving unit having a rotation shaft for rotating the pointer, a display plate having a through hole formed at a position corresponding to the rotation shaft and having an indicator unit indicated by the pointer; A display device comprising: a light emitting element that emits illumination light that illuminates and transmits the display plate;
The display panel includes a translucent substrate, and a transmissive design layer that is formed on the rear surface side of the translucent substrate and displays a chromatic pattern with a large number of basic color dots. .   The display device according to claim 1, wherein the display panel includes a light diffusion layer formed on a front side of the translucent substrate.   The display device according to claim 1, wherein fine irregularities are formed on a front surface of the translucent substrate.   The display device according to claim 1, wherein the basic color dots include C (cyan), M (magenta), and Y (yellow) dots.