JP6303389B2 - Display board - Google Patents

Description

  The present invention relates to a display plate having a design display unit and the like by guiding light emitted from a light source with a display member.

  A conventional display member is disclosed in Patent Document 1, which guides light emitted from a light source and emits light from a design display portion formed at a cutout portion of a light shielding layer printed on the surface. In the light guide plate for displaying a predetermined design, a light diffusion portion is provided at a location corresponding to the design display portion, and the light is diffused only at a location corresponding to the design display portion by the light diffusion portion, thereby the design display portion. The light is not emitted from other than the design surface part by not diffusing the light in the part not corresponding to the design display part, and the light is efficiently guided in the light guide plate even with a small number of light sources, Even designs away from the light source are displayed brightly.

Japanese Patent Application Laid-Open No. 2011-237692

  However, in the conventional display device, two design display units are arranged so that the design display unit that emits light from a light source that travels in the display member and shines with respect to the traveling direction of the light in the display member. When arranged, since light is emitted from the front design display section, the design display section at the back is likely to appear darker than the front design display section, and the appearance of the display device may be impaired. was there.

  Accordingly, an object of the present invention is to provide a display panel that can solve the above-described problems and can improve the appearance of the design even with a small number of light sources.

A light incident part for taking in light from a light source;
A light guide unit for guiding light taken from the light incident unit in a planar shape;
A design display unit disposed on a front surface of the light guide unit and transmitting a light guided by the light guide unit to display a design;
A display board comprising:
The design display unit is provided with a first design and a second design that are paired with each other on a circle, an ellipse, or an arc, an elliptic arc on the same center,
The first design and the second design are arranged so as not to overlap in a circumferential direction and a radial direction based on the same center.

The light guide part is provided with a through hole,
The light incident portion is provided on the inner wall of the through hole,
The same center of arrangement of the first design and the second design is provided at a substantially center of the through hole.

The first design and the second design are a set of index designs which are paired with each other and indicate the same measurement value by position,
The first design is a graphic design showing a boundary,
The second design is a numerical design indicating the value of the corresponding first design.

The first design is thinner as it is closer to the approximate center of the light incident portion, and thicker as it is farther from the through hole.

  It is possible to provide a display panel that can improve the appearance of the design even with a small number of light sources.

It is a front view of the display board by embodiment of this invention. It is sectional drawing (AA 'sectional drawing of FIG. 1) of the display board by the same embodiment. It is the figure explaining the light guide from the light source to the display board by the embodiment. It is an arrangement relation figure of the index part (1st design) and number part (2nd design) on a display board by the embodiment, (a) is a figure explaining arrangement relation in a diameter direction, (b ) Is a diagram for explaining the arrangement relationship in the circumferential direction, and (c) is an enlarged view of a region B in FIG.

  A vehicle display device according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4 of the accompanying drawings.

  As shown in FIGS. 1 to 3, the vehicle display device 1 according to the present embodiment includes a dial plate (display plate) 10, a case body 20, a light guide body 30, a pointer 40, a light source 50, an actuator 60, and a circuit board 70. Based on a vehicle signal indicating vehicle information such as a vehicle speed and an engine speed output from the vehicle side, the pointer 40 indicates a specific position by turning, and the light emitted from the light source 50 The dial 10 and the pointer 40 shine.

  The dial plate 10 includes a light guide layer 11, a design display layer 12, a surface light adjustment layer 13, a back light adjustment layer 14, a through hole 15, and a light incident portion 16.

  The light guide layer 11 is configured by a flat plate member formed of a synthetic resin member (for example, a polycarbonate plate or the like) having a transparent or semi-transparent translucency (including a semi-translucent property).

The design display layer 12 is a display layer for displaying a design (characters, pictures, figures, symbols, etc.)
The indicator portion 12a and the number portion 12b that transmit and emit light, and the light shielding portion that does not transmit light. The light-shielding portion is formed by using a light-shielding ink or the like in areas other than the index portion 12a and the number portion 12b, and filling them with printing, paint, or the like. The indicator portion 12a and the number portion 12b are portions of a design obtained by cutting out the light shielding portion, and are formed by printing, paint, or the like using a transparent ink or the like.

  The surface light adjustment layer 13 includes a light diffusing portion 13a formed of a diffusing member having light diffusibility, and a transparent or translucent translucency (including semi-translucency) having a light refractive index lower than that of the light guide layer 11. ) And a light control portion formed of a synthetic resin member (for example, a polycarbonate plate). The light diffusion portion 13a is printed on the front surface of the light guide portion 11 by printing or paint at a position corresponding to an index portion (first design) 12a and a number portion (second design) 12b provided on the design display layer 12 described later. The light L formed by the light guide 11 and diffused to the corresponding index part 12a or number part 12b is emitted. The light control unit is formed in a region other than the light diffusion unit 13 a and adjusts the amount of light reflected inside the light guide layer 11 and the amount of light emitted outside the light guide layer 11.

  The back surface light adjustment layer 14 is made of a synthetic resin member (for example, a polycarbonate plate) having a transparent or semi-transparent translucency (including semi-translucency) having a light refractive index lower than that of the light guide layer 11. The amount of light reflected inside the light guide layer 11 and the amount of light emitted outside the light guide layer 11 are adjusted in the same manner as the light control portion of the surface light adjustment layer 13.

  The through hole 15 is opened in the center of the dial 10, and a light incident portion 16 is provided on the inner wall of the through hole 15.

  Further, in the through hole 15, the pointer 40 and the actuator 60 are disposed so as to be connected by a pointer shaft via the through hole 15, and a light guide 30 described later is disposed so as to surround the pointer shaft. .

  The light incident portion 16 takes light L guided from a light guide 30 described later into the light guide layer 11. The light L taken into the light guide layer 11 is reflected from the front light adjustment layer 13 and the back light adjustment layer 14 and guided from the center of the dial 10 to the back. The guided light L passes through the light diffusion portion 13a provided in the surface light adjustment layer 13 and diffuses, and the indicator portion 12a or the number portion 12b of the design display layer 12 disposed on the upper surface thereof is illuminated. Let

  The case body 20 is made of a synthetic resin material, is disposed between the dial plate 10 and a circuit board 70 described later, and supports and fixes the dial plate 10.

  The light guide 30 is formed of a synthetic resin member (for example, a polycarbonate plate or the like) having transparent or translucent translucency (including translucency), and emits light emitted from the light source 50 described later to the dial. The light is guided to the ten light incident portions 16 and the pointer 40.

  The pointer 40 indicates the indicator portion 12a and the number portion 12b on the dial plate 20 corresponding to the value to be indicated by the power of an actuator 60 described later. The pointer 40 includes a light guide unit that guides light guided from the light guide 30 to the tip of the pointer 40, and shines by the light of the light source 50.

  The light source 50 is a top-view type LED that emits light in a direction perpendicular to the circuit board 70 (front direction).

  The actuator 60 includes a stepping motor, and includes a pointer shaft on which the pointer 40 is mounted, and rotates about the pointer shaft.

  The circuit board 70 includes a light source 50 and an actuator 60 and a control unit that performs electrical control of the vehicle display device 1.

  Next, the positional relationship between the indicator part 12a and the numeral part 12b provided on the design display layer 12 of the dial 10 will be described with reference to FIG. Note that the point P in FIGS. 4A and 4B is the same point.

  As shown in FIGS. 4A and 4B, the indicator portion 12a and the numeral portion 12b provided on the design display layer 12 of the dial plate 10 have a point P (of the pointer 40) at the approximate center of the through hole 15. It is placed on an arc centered at the point where the rotation axis passes. The index part 12a and the number part 12b are a pair of design sets that represent the same measurement value (vehicle speed, engine speed, etc.) by position, and the corresponding figures and numbers are arranged in a positional relationship close to each other. .

  Further, as shown in FIG. 4A, the index portion 12a and the number portion 12b are arranged so as not to overlap each other in the radial direction with respect to the point P.

  Further, as shown in FIG. 4B, the index portion 12a and the number portion 12b are arranged so as not to overlap each other in the circumferential direction with respect to the point P.

  With this configuration, the indicator portion 12a and the numeral portion 12b are arranged in a positional relationship corresponding to each other and do not overlap with each other in the light traveling direction in the display member. In other words, it is possible to provide a display panel in which both the appearance as a display device and the readability can be achieved by appropriately shining both of the indicators 12a without impairing the shine of the number portion 12b.

  Further, as shown in FIG. 4C, the indicator portion 12 a is formed so that the design width W <b> 1 is thinner as it is closer to the through hole 15, and the design width W <b> 2 is thicker as it is farther from the through hole 15.

  By configuring in this way, even if the indicator portion 12a is a graphic design that is long in the radial direction with respect to the point P, the indicator portion 12a can easily shine evenly, and a display panel having a good appearance as a display device can be obtained. Can be provided.

  Although the embodiment has been described above, in the invention of the present application, the index portion 12a may be disposed on the dial plate 10 of the number portion 12b, and the index portion 12a and the number portion 12b are centered on the point P. , A circle, an arc, an ellipse, and an ellipse arc, respectively. In addition, the dial 10 is provided with a plurality of through holes, and a plurality of sets of indicator portions 12a and number portions 12b serving as indicators of different measurement values (for example, vehicle speed and engine speed) are provided. You may do it.

1 Vehicle display 10 Dial (Display board)
11 Light guide layer (light guide part)
12 Design display layer (design display part)
12a Indicator part (first design)
12b Number part (second design)
13 Surface light adjustment layer 13a Light diffusion part 14 Back light adjustment layer 15 Through hole 16 Light incident part 20 Case body 30 Light guide 40 Pointer 50 Light source 60 Actuator 70 Circuit board L Light

Claims (4)

A light incident part for taking in light from a light source;
A light guide unit for guiding light taken from the light incident unit in a planar shape;
A design display unit disposed on a front surface of the light guide unit and transmitting a light guided by the light guide unit to display a design;
A display board comprising:
The design display unit is provided with a first design and a second design that are paired with each other on a circle, an ellipse, an arc, or an elliptic arc on the same center with the approximate center of the light incident unit as a center ,
The display panel, wherein the first design and the second design are arranged so as not to overlap in a circumferential direction and a radial direction based on the same center. The light guide part is provided with a through hole,
The light incident portion is provided on the inner wall of the through hole,
The display board according to claim 1, wherein the same center of arrangement of the first design and the second design is provided at a substantially center of the through hole. The first design and the second design are a set of index designs which are paired with each other and indicate the same measurement value by position,
The first design is a graphic design showing a boundary,
The display board according to claim 1, wherein the second design is a numeric design indicating a value of the corresponding first design. The display panel according to claim 3, wherein the first design is thinner as it is closer to the approximate center of the light incident part, and is thicker as it is farther from the approximate center of the light incident part .

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