JP2018054444A - Instrument device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument device with excellent design.SOLUTION: An instrument device includes: light sources 60 mounted on a substrate 50; light guide bodies 20 lighting up by receiving light from the light sources 60; and a display unit 30 for displaying information. The light guide bodies 20 guide the light from the light sources 60 and emit it from a plurality of emission parts 21a, so that the emission parts 21a light up. A part of the plurality of emission parts 21a faces the display unit 30, and at least a part of the others faces the substrate 50. The substrate 50 and the display unit 30 are set to have the same color in a range facing the emission parts 21a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an instrument device.

  Conventionally, an instrument device that shows vehicle information such as a vehicle speed and an engine speed is known. Further, for example, as in an instrument device disclosed in Patent Document 1, an integrated instrument in which a digital display unit that displays vehicle information using an organic EL and an analog display unit that displays vehicle information using a pointer are integrated. Devices are also known.

Japanese Patent Laid-Open No. 2005-239021

  As an example of the integrated instrument device, as shown in FIG. 5B, a configuration including a digital display unit 200 that displays a pointer and an analog display unit 300 that displays a scale for the pointer is being studied. . In this configuration, the digital display unit 200 and the analog display unit 300 are likely to be close to each other. Under such design constraints, as shown in FIG. 5A, a plurality of parts 120 and 130 having different colors may exist on the back surface of the light guide 110 indicated by a broken line. The component 120 is a display unit including, for example, a display unit 400 such as a liquid crystal panel and a holding plate 500 that is positioned on the back surface of the light guide 110 and fixes the display unit 400. The component 130 is, for example, a substrate on which the light source 150 and the like are mounted. For easy identification, the component 120 is shaded and the component 130 is outlined. The light guide 110 receives light from the light source 150 and causes the scale portion 140 to emit light. In this case, the light source 150 is not noticeable when the light source 150 is turned on. However, as illustrated in FIG. 5B, when the light source 150 is turned off, the colors of the plurality of components 120 and 130 behind the scale portion 140 pass through the light guide 110. It may be visible from. For this reason, like the scale parts 140a and 140b, colors become uneven and the design of the instrument device is deteriorated.

  This invention is made | formed in view of the said problem, and aims at improving the designability of an instrument apparatus.

In order to achieve the above object, an instrument device according to the first aspect of the present invention provides:
A substrate,
A light source mounted on the substrate and emitting light;
A light guide that receives the light from the light source, guides the light, and emits the light from a plurality of emitting parts, and the emitting part is turned on,
A display unit for displaying information,
The plurality of emitting portions of the light guide body are opposed to the substrate and the display unit,
The substrate and the display unit are set to the same color in a range facing the emitting part.
It is characterized by that.

In order to achieve the above object, the instrument device according to the second aspect of the present invention is:
A substrate,
A light source mounted on the substrate and emitting light;
A light guide that receives the light from the light source, guides the light, and emits the light from a plurality of emitting parts, and the emitting part is turned on,
A display unit for displaying information;
A background member facing the light guide,
The plurality of emitting portions of the light guide body are opposed to the background member and the display unit,
The background member is located between the substrate and the light guide, and has the same color as a portion facing the light guide in the display unit.
It is characterized by that.

  According to the present invention, the design of the instrument device can be improved.

(A) is a figure which shows the structure of the instrument apparatus which shows one Embodiment of this invention, (b) is the structure of the instrument apparatus of the state which removed the dial of FIG. FIG. Side surface sectional drawing of the II-II cross section of Fig.1 (a). The perspective view of the instrument apparatus of the embodiment. (A) is a figure which shows the structure of the instrument apparatus in other embodiment of this invention, (b) is side sectional drawing of the IVb-IVb cross section of (a) figure. It is a top view of the conventional instrument apparatus, (a) is a top view of the state which removed the dial plate and the light guide, (b) is a top view of the state which has arrange | positioned the dial plate and the light guide.

  Hereinafter, an embodiment in which the present invention is applied to an in-vehicle instrument that displays a vehicle speed will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 (a), 1 (b), 2 and 3, an in-vehicle instrument (instrument device) 100 includes a dial 10, a dial light guide (light guide) 20, and a display unit. 30, a cell case 40, a substrate 50, and a light source 60. The vehicle-mounted instrument 100 is a speedometer.

  In the following description, when the vehicle-mounted instrument 100 is viewed from the front, the viewing side when the user confirms the measurement value or the like when viewing the vehicle-mounted instrument 100 from the front is referred to as “front”, and the back side is referred to as “back”.

  The dial plate 10 is made of a resin material such as PC (Polycarbonate), and has a substantially semicircular shape in plan view. As shown in FIG. 1A, the dial 10 includes an indicator portion 11 arranged along an arc on the surface. In the indicator unit 11, the vehicle speed that is the instruction target of the in-vehicle instrument 100 is written in increments of 10 km / h, for example. In the drawing, the notation of numerical values is omitted, and the indicator portion 11 which is a numerical value indicating range is indicated by a broken line. A plurality of first scale holes 12 a are arranged on the outer peripheral side of the indicator portion 11. Further, a second scale hole 12 b is provided on the inner peripheral side of the indicator portion 11. The plurality of first scale holes 12 a and the second scale holes 12 b are each arranged along an arc, similarly to the indicator portion 11.

The dial light guide 20 (light guide) is made of a translucent resin such as PMMA (Poly Methy Methacrylate), and guides the light emitted from the light source 60 to the dial 10. Specifically, the dial light guide 20 has a main body disposed on the back surface of the dial 10 and an end portion (light receiving portion) 22 mounted on the substrate 50, as shown in cross section in FIG. It extends to a position facing the plurality of light sources 60. The main body of the dial light guide 20 has a substantially semicircular shape in plan view, and opposes almost the entire back surface of the dial 10.
As shown in FIG. 2 and FIG. 3, a plurality of first emitting portions (fitting to a plurality of first scale holes 12 a formed in the dial 10 are formed on one surface of the main body portion of the dial light guide 20. An emission part) 21a and a plurality of second emission parts 21b fitted into the plurality of second scale holes 12b are formed. The first emission part 21a and the second emission part 21b are each formed in a rectangular shape in a side view as shown in FIG. 2, and in a wedge shape in a plan view as shown in FIG.
The dial light guide 20 receives and guides the light emitted from the light source 60a at the end (light receiving portion) 22 and emits the light from the first emitting portion 21a and the second emitting portion 21b. Thereby, when the light source 60a is turned on, each numerical value displayed on the indicator portion 11 is sandwiched between the first emitting portions 21a and 21b that emit light, and is displayed in an easy-to-read manner.

The display unit 30 includes a liquid crystal display panel 31 (display unit), a liquid crystal display panel light guide 32, and a holding plate 33. The liquid crystal display panel 31 is composed of a segment type liquid crystal display element.
As shown in FIGS. 2 and 3, the liquid crystal display panel 31 has an upper end portion that overlaps all the second emission portions 21 b of the dial light guide 20.
As shown in FIG. 3, the liquid crystal display panel 31 has a plurality of instructions that indicate any combination of the second light emitting portions 21 b and the numerical values written on the indicator portions 11 and the first light emitting portions 21 a arranged in a radial pattern. A pointer display unit for displaying the liquid crystal pointer 34 is provided.
In addition, the liquid crystal display panel 31 includes a numerical value display unit 35 that displays a numerical value indicating speed at a lower portion of the pointer display unit. The numerical value display unit 35 has, for example, a 2-digit segment and digitally displays the vehicle speed.

The light guide 32 for the liquid crystal display panel is made of a translucent resin such as PMMA, for example, and has a light receiving portion 32a and a liquid crystal display panel emitting portion 32b as shown in FIG. The light receiving unit 32 a faces the light source 60 disposed on the substrate 50 and makes light from the light source 60 incident. The liquid crystal display panel emitting portion 32 b is disposed on the back side of the liquid crystal display panel 31. The light guide 32 for the liquid crystal display panel receives light from the light source 60 by the light receiving unit 32a, guides this light, and emits the light from the light emitting unit 32b for the liquid crystal display panel by the edge light structure, thereby the liquid crystal display panel. 31 is transmitted and illuminated.
As shown in FIGS. 2 and 3, the holding plate 33 has a function of supporting the dial light guide 20 from the back side and holding the liquid crystal display panel 31 to the substrate 50 side. The holding plate 33 is formed in a frame shape surrounding the outer periphery of the liquid crystal display panel 31 from a steel plate or the like, and is fixed to the substrate 50 in a state where the cell case 40 is held from the side surface. In the present embodiment, the holding plate 33 is located in the center among all the first emitting portions 21a on the liquid crystal display panel 31. It is formed in a shape opposite to the eight first emitting portions 21a (shown by broken lines in FIG. 1B) excluding one emitting portion 21a. The holding plate 33 is made of a conductive material (metal material). The holding plate 33 is surface-treated in black or has a coating such as a black cutting sheet.

  The cell case 40 is made of a resin material such as PP (Polypropylene), for example. As shown in FIG. 2, the cell case 40 is attached to the substrate 50, and the light guide 32 for the liquid crystal display panel is disposed so Store.

  The substrate 50 is constituted by, for example, a hard printed board in which a copper foil wiring pattern is applied to a board made of an epoxy resin material. Various electronic components for driving the liquid crystal display panel 31, light sources 60 a and 60 b that emit light to the light guide 20 for the dial plate and the light guide 32 for the liquid crystal display panel are mounted on the substrate 50.

  As shown in FIG. 1B, the light guide back surface portion 51 formed over a range of the substrate 50 facing at least the first light emitting portion 21 a and the second light emitting portion 21 b of the dial light guide 20. This is a coating of the substrate 50 painted or printed in the same black color as the holding plate 33. Alternatively, the light guide back portion 51 may be a coating made of a black cutting sheet or the like. In this example, the light guide back surface portion 51 has a substantially semicircular shape so as to include the first emission portion 21a and the second emission portion 21b in a front view.

The light source 60a is composed of an LED or the like, and as shown in FIG. 2, faces the light receiving part 22 of the dial light guide 20 and the light source 60b faces the light receiving part 32a of the liquid crystal display panel light guide 32. Thus, it is mounted on the front side of the substrate 50.
As shown in FIG. 1B, the light source 60a for the dial light guide 20 is a liquid crystal lined up at equal intervals on the circumference of a virtual circle centering on the axis of the virtual rotation axis of the liquid crystal pointer 34. A plurality of needles 34 are arranged corresponding to the rotation range of the hands 34. The light receiving unit 22 is formed in a shape facing the plurality of light sources 60a.
The light source 60b for the liquid crystal display panel light guide 32 is centered on the axis of the rotation axis of the liquid crystal pointer 34, and the rotation range of the liquid crystal pointer 34 is arranged at equal intervals on the circumference of a virtual circle having a smaller diameter than the light source 60a. A plurality are arranged corresponding to The light receiving part 32a is formed in a shape facing the plurality of light sources 60b.

Next, operation | movement of the instrument apparatus 100 which has the said structure is demonstrated.
When the ignition is turned on, the light source 60a is turned on. A part of the light emitted from the light source 60a is incident on the light receiving part 22 of the light guide 20 for the dial plate, and is guided through the light guide 20 for the dial plate, so that the first light emitting part 21a and the second light emitting part 21b. Exits from.
Similarly, the light source 60b is turned on. A part of the light emitted from the light source 60b is incident on the light receiving part 32a of the light guide 32 for the liquid crystal panel, is guided through the light guide 32 for the liquid crystal panel, and is emitted from the light emitting part 32b for the liquid crystal display panel. 31 is illuminated from the back.
A driving circuit (not shown) of the liquid crystal display panel 31 displays the liquid crystal pointer 34 according to the speed to be displayed, and contrasts and interprets the liquid crystal pointer 34 and the numerical value displayed on the index unit 11 indicated by the liquid crystal pointer 34. This informs the user of the speed. Further, the speed is represented by displaying a numerical value indicating the speed on the numerical value display unit 35.
In the state where the light source 60a is turned on, the colors of the first emission part 21a and the second emission part 21b are one color with the color of the emitted light guided from the light source 60a.
On the other hand, when the ignition is turned off, both the light sources 60a and 60b are turned off.
In this state, a part of the first emission part 21a (that is, the eight first emission parts 21a described above) is displayed through the color of the holding plate 33 on the back surface thereof. On the other hand, the light guide of the substrate 50 is provided on the back surface of the remaining one of the first emission portions 21a (that is, a total of six first emission portions 21a on both ends excluding the eight first emission portions 21a described above). A body back surface portion 51 is disposed.
For this reason, a part of the first emission part 21 a and the second emission part 21 b are displayed in the color of the holding plate 33, and the rest are displayed in the color of the light guide back part 51. However, since the holding plate 33 and the light guide back surface portion 51 are the same color, all the first emission portions 21a are displayed in the same color. Therefore, the design of the dial plate 10 when the light source is turned off is improved.

  The present invention is not limited to the above-described embodiments, and various improvements and design changes can be made without departing from the gist of the present invention.

  For example, in the above-described embodiment, an example in which the holding plate 33 and the light guide back portion 51 are the same color has been described, but there may be a color difference that does not cause the user to feel uncomfortable. Accordingly, the colors of the holding plate 33 and the light guide back surface portion 51 may be similar colors. Therefore, in the present specification, the fact that the holding plate 33 and the light guide back portion 51 are the same color includes the case where they are similar colors.

  The light guide back surface portion 51 may be integrated with the substrate 50 or may be a separate component (background member) that can be attached to and detached from the substrate 50. Alternatively, the light guide back surface portion 51 is a separate component from the substrate 50 and may be disposed at an arbitrary position between the substrate 50 and the dial light guide 20. When the light guide back surface portion 51 is a separate component from the substrate 50, it is made of a resin material such as PP (Polypropylene), and has a black coating on the front side.

  In the above embodiment, the holding plate 33 faces the first emitting portion 21a. However, in addition to the holding plate 33, the liquid crystal display panel 31 and other components constituting the display unit 30 face the first emitting portion 21a. You may do it. In this case, among the front sides of the parts facing the first light emitting portion 21 a, at least the range facing the first light emitting portion 21 a is the same color as the light guide back surface portion 51.

  The dial light guide 20 may include a light emitting portion (not shown) that is not branched into the first light emitting portion 21a and the second light emitting portion 21b. In this case, the emitting part may be located on the outer peripheral side of the indicator part 11 or may be located on the inner peripheral side of the indicator part 11.

  Further, the light source of the liquid crystal display panel 31 may have a direct structure instead of the edge light structure. As the liquid crystal display panel 31, a self-luminous display device such as an organic EL panel can be applied. In this case, it is not necessary to provide the light source 60b and the light guide body 32 for the liquid crystal display panel.

  The liquid crystal display panel 31 may be a dot matrix type.

Moreover, in the said embodiment, although the liquid crystal pointer 34 was used in order to instruct | indicate the parameter | index part 11, as shown to Fig.4 (a), it comprised as a structure instead of the liquid crystal pointer 34 displayed as an image. An actual pointer 34a may be arranged. In this case, instead of the display unit 30 including the liquid crystal display panel 31 and the like, a display unit including a pointer, a motor, and the like may be disposed.
Furthermore, at this time, a display unit including a pointer, a motor, and the like may be newly provided while leaving the display unit 30 including the liquid crystal display panel 31 and the like. Specifically, as shown in FIG. 4B, the actual pointer 34a includes, for example, a rotation center portion 34b serving as a rotation center, and a support portion 34c having a U-shaped cross section protruding in the radial direction from the rotation center portion 34b. Also equipped. The substance pointer 34a is rotationally driven with respect to the first emission part 21a, the second emission part 21b, and the index part 11 by rotating the rotation center part 34b by a stepping motor which is a drive part (not shown).

  In the above embodiment, the holding plate 33 of the display unit 30 is positioned on the back surface of the light guide 20, but the liquid crystal display panel 31 of the display unit 30 may be positioned. The liquid crystal display panel 31 turns black when the light source 60a is turned off.

  The instrument device of the present invention is suitable for a meter mounted on a moving body such as an automobile, a motorcycle, an agricultural machine, a construction machine, and a ship.

100 On-board instrument (instrument equipment)
DESCRIPTION OF SYMBOLS 10 Dial 11 Index part 12a 1st scale hole 12b 2nd scale hole 20 Light guide for dial (light guide)
21a First emission part (emission part)
21b 2nd light emission part 22 Light-receiving part 30 Display unit 31 Liquid crystal display panel (display part)
32 Light guide for liquid crystal display panel 33 Holding plate 34 Liquid crystal pointer 40 Cell case 50 Substrate 51 Back surface of light guide 60a, 60b Light source (LED)

Claims (5)

A substrate,
A light source mounted on the substrate and emitting light;
A light guide that receives the light from the light source, guides the light, and emits the light from a plurality of emitting parts, and the emitting part is turned on,
A display unit for displaying information,
The plurality of emitting portions of the light guide body are opposed to the substrate and the display unit,
The substrate and the display unit are set to the same color in a range facing the emitting part.
An instrument device characterized by that. A substrate,
A light source mounted on the substrate and emitting light;
A light guide that receives the light from the light source, guides the light, and emits the light from a plurality of emitting parts, and the emitting part is turned on,
A display unit for displaying information;
A background member facing the light guide,
The plurality of emitting portions of the light guide body are opposed to the background member and the display unit,
The background member is located between the substrate and the light guide, and has the same color as a portion facing the light guide in the display unit.
An instrument device characterized by that. The substrate is
In the range facing the emission part of the light guide, provided with a coating of the same color as the display unit,
The instrument device according to claim 1. The background member is
In the range facing the emission part of the light guide, provided with a coating of the same color as the display unit,
The instrument device according to claim 2. The display unit is
A display unit, and a holding plate that is positioned between the display unit and the light guide and fixes the display unit to the substrate,
The holding plate is
In the range facing the emission part of the light guide, the same color as the range facing the emission part of the light guide of the substrate is set.
The instrument device according to any one of claims 1 to 4, characterized in that:

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