JP6663885B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device.

  As a technique related to a conventional vehicle display device applied to a vehicle, for example, Patent Literature 1 includes a dial, a light guide, a three-dimensional design portion, a concave portion, and color printing. There is disclosed a three-dimensional design part structure of an automotive meter. The light guide is disposed on the back side of the dial, and light from a light source enters from the base end side. The three-dimensional design portion protrudes from the front end side of the light guide and protrudes from a through hole formed in the dial. The concave portion is formed so as to surround the three-dimensional design portion on the light guide back surface of the light guide opposite to the dial. The color printing is performed including a concave portion so as to surround the three-dimensional design portion on the back surface of the light guide.

JP 2014-178279 A

  By the way, the three-dimensional design part structure of the automotive meter described in Patent Document 1 described above may be provided with, for example, a plurality of three-dimensional design parts and coloring some of them. In such a case, there is room for further improvement in the three-dimensional design part structure so that both the colored light emitting portion and the uncolored light emitting portion emit light more appropriately.

  The present invention has been made in view of the above circumstances, and has as its object to provide a vehicle display device that can appropriately emit light from a light emitting portion.

In order to achieve the above object, a vehicle display device according to the present invention includes a pointer that rotates around a rotation axis as a rotation center, and a scale section indicated by the pointer, wherein the scale section includes visible light. A substrate that blocks the light of the range component, a transparent scale that is formed integrally with a plurality of transparent scales that transmit light of the visible light range component and is transparent, and the plurality of transparent scales rotate the pointer. A transparent scale portion that is located side by side at intervals along the trajectory direction and is exposed from the base material, a colored graduation that transmits and transmits light in the visible light range component, and is a colored graduation along the rotation trajectory direction. A colored scale that is positioned side by side with the transparent scale and is exposed from the base material, and a slit that is interposed between the transparent scale and the colored scale with respect to the rotation locus direction. Yes, and the slit portion of the substrate, in the depth direction eyes It is located on the back side opposite to the position side and extends along the depth direction to the base material, and the scale portion is irradiated with light from the light source on the back side in the depth direction. The transparent scale and the colored scale emit light by light .
In the above-mentioned vehicle display device, the scale portion may be located on the side of the dial on which the scale, a pattern, a symbol, a character, or a decoration corresponding to the information regarding the vehicle is drawn, on the side of the visual position. .
Further, in the vehicle display device, a pressing member assembled to the housing while the dial is sandwiched between the housing and the display surface of the dial while exposing the display surface of the dial to the viewing position in the depth direction. And the scale portion may be formed integrally with the pressing member.
Further, in the vehicle display device, the scale portion is formed integrally with the base material, the transparent scale portion, and the colored scale, and the transparent scale portion is configured such that each of the transparent scale portions is transparent with respect to the rotation locus direction. By interposing a part of the base material between the scales, each of the transparent scales is independently exposed to the visual position side from the base material, and the colored scales are arranged in the direction of the rotation locus. By interposing a part of the base material between the transparent scales, exposed to the visual position side from the base material independently of each of the transparent scales, the slit portion, with respect to the rotation locus direction The transparent scale portion and the colored scale are provided so as to cut off the edge, and extend to the substrate.
In the vehicle display device, the base material, the transparent scale, and the colored scale may have the same surface on the viewing position side.

  The vehicle display device according to the present invention displays a measured value related to the vehicle by pointing the scale portion with a pointer. Here, the scale section has a transparent scale section in which a plurality of transparent scales are integrally formed, and a colored scale. The scale section includes a plurality of transparent scales located in the transparent scale section at intervals along the direction of the rotation trajectory of the hands and is exposed from the base material, and the colored scales extend along the direction of the rotation trajectory. And is arranged side by side with the transparent scale part at an interval and is exposed from the base material. In such a configuration, the scale section has a slit section between the transparent scale section and the colored scale in the direction of the rotation locus, so that the transparent scale and the colored scale both emit light. It is possible to perform light emission display with an appropriate emission color without being affected by the color. As a result, the vehicle display device has an effect that the scale portion, which is the light emitting portion, can appropriately emit light.

FIG. 1 is a front view illustrating a schematic configuration of the vehicle display device according to the embodiment. FIG. 2 is a partial perspective view illustrating a schematic configuration of the vehicle display device according to the embodiment. FIG. 3 is a partial cross-sectional view (a cross-sectional view along AA shown in FIG. 1) illustrating a schematic configuration of the vehicle display device according to the embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited by the embodiment. The components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

[Embodiment]
The vehicle display device 1 according to the present embodiment shown in FIG. 1 constitutes a so-called in-vehicle meter. The vehicle display device 1 is mounted on, for example, an instrument panel provided on a dashboard of the vehicle, and displays various information related to the vehicle as information to be used for driving the vehicle.

  In addition, the depth direction X as the first direction of the vehicle display device 1 illustrated in FIG. 1 typically corresponds to a front-back direction of a vehicle to which the vehicle display device 1 is applied. Here, the depth direction X also corresponds to the axial direction along the rotation axis C that forms the center of rotation of the pointer 7. Further, the front side of the vehicle display device 1 is a side facing the driver's seat of the vehicle in the depth direction X, and is typically a side visually recognized by a driver sitting in the driver's seat. Furthermore, the front side of the vehicle display device 1 in the depth direction X is the side where the visual position EP (see FIG. 3) is located. Here, the visual position EP is typically assumed in advance to be located in a so-called eye range of a vehicle to which the vehicle display device 1 is applied. Here, the eye range is the “driver's eye range of the automobile”, and corresponds to an area where a driver's viewpoint predetermined according to the vehicle is located. The eye range is typically a statistical representation of the distribution of the position of the driver's eyes in a vehicle. For example, a predetermined percentage (eg, 95%) of the driver sitting in the driver's seat is displayed. This corresponds to an area including the position of the driver's eyes. On the other hand, the back side of the vehicle display device 1 is the side opposite to the front side in the depth direction X, and is typically the side housed inside the instrument panel. The width direction Y as the second direction of the vehicle display device 1 typically corresponds to the vehicle width direction of the vehicle to which the vehicle display device 1 is applied. In the following description, in the width direction Y of the vehicle display device 1, the left side (the left side in FIG. 1) toward the front surface of the vehicle display device 1 is the left side in the width direction Y, and the right side (the right side in FIG. 1) is the width direction. It may be called Y right side. The height direction Z as the third direction of the vehicle display device 1 typically corresponds to the vehicle height direction to which the vehicle display device 1 is applied, for example, a state in which the vehicle is located on a horizontal plane. Is the direction along the vertical direction. Unless otherwise specified, each direction used in the following description represents a direction in a state where the components of the vehicle display device 1 are assembled with each other and the vehicle display device 1 is assembled with an instrument panel.

  The vehicle display device 1 of the present embodiment includes, for example, a speedometer 2, a tachometer 3, an image display unit 4, a direction indication display unit 5, and the like as display units that display information about the vehicle. The speedometer 2 displays the vehicle speed. The tachometer 3 displays the output rotation speed of the traveling power source. The image display unit 4 displays image information. The direction indication display unit 5 displays the operation state of the direction indicator (turn signal) of the vehicle. The vehicle display device 1 includes a housing 6 that accommodates each part, and a speedometer 2, a tachometer 3, an image display unit 4, a direction indication display unit 5, and the like are arranged in the housing 6, and various kinds of information are displayed. The surface is exposed on the front side in the depth direction X, that is, on the viewing position EP side. In the vehicle display device 1, in the housing 6, the speedometer 2 is disposed on the right side in the width direction Y, the tachometer 3 is disposed on the left side in the width direction Y, and the image display unit 4 and the direction instruction display unit 5 are further disposed. It is arranged between them.

  The speedometer 2 and the tachometer 3 are vehicular analog instruments for indicating the vehicle speed and the output rotation speed, which are measured values relating to the vehicle, with the hands 7 respectively. Each of the speedometer 2 and the tachometer 3 includes a pointer 7 and a scale 8. The pointer 7 is formed in a rod shape, and rotates around a rotation axis C along a depth direction (axial direction) X as a rotation center. The scale section 8 is an index section indicated by the pointer 7. The speedometer 2 and the tachometer 3 are driven by a drive motor provided in the housing 6 to rotate, and the pointer 7 is rotated to indicate a predetermined position of the scale portion 8, and as a measurement value relating to the vehicle, Displays vehicle speed and output speed. As the image display unit 4, for example, a thin liquid crystal display, a plasma display, an organic EL display, or the like can be used. The image display unit 4 includes, as information on the vehicle, for example, an accumulated traveling distance, a cooling water temperature, a remaining fuel amount, a battery charge amount, navigation information, map information, various warning lights (warning lamps, so-called tell tales), a shift position indicator, and the like. In addition, an image or the like of driving information related to various driving that changes every moment when driving the vehicle is displayed. The direction indication display unit 5 switches the display and non-display of the light transmitting parts constituting the design pattern representing the left and right arrow shapes according to the turning on and off of the light source, and thereby the operation state of the direction indicator of the vehicle. Is displayed.

  In the vehicle display device 1 according to the present embodiment, as shown in FIGS. 2 and 3, the scale 8 includes a transparent scale 81 and a colored scale 83, and a predetermined shape is added therebetween. This realizes a configuration in which the light emitting portions of both the transparent scale 81 and the colored scale 83 are appropriately displayed. Here, the coloring scale 83 is colored red, and is provided at a position indicating a predetermined speed (a position indicating “50 km / h” in the example of FIG. 1) in the scale unit 8 of the speedometer 2. Hereinafter, the configuration of the vehicle display device 1 will be described in detail with reference to the drawings.

  The vehicle display device 1 further includes a dial 9, a holding member 10, a light source 11 (shown by a dotted line in FIG. 1), and a light guide 12 as shown in FIGS. Prepare. The vehicle display device 1 has a structure in which a housing 6, a light guide 12, a dial 9, and a holding member 10 are stacked in this order from the back side to the front side in the depth direction X. The vehicle display device 1 may further include a so-called dial plate or a transparent cover (front glass) on the front side in the depth direction X of the holding member 10. In the vehicle display device 1, the light source 11 and the light guide 12 are held in the housing 6. The housing 6 is made of, for example, an insulating resin material. The housing 6 may be configured by, for example, combining a plurality of members. The housing 6 includes the light source 11, the light guide 12, and other components constituting the speedometer 2, the tachometer 3, the image display unit 4, and the direction indication display unit 5, which are assembled in a space defined therein. I do. The housing 6 places the display surface of various information in the speedometer 2, the tachometer 3, the image display unit 4, the direction indication display unit 5 and the like through the opening or the like on the front side in the depth direction X, that is, on the viewing position EP side. Expose.

  The dial 9 is formed in a plate shape in which the depth direction X is the plate thickness direction, and is a plate on which various scales, designs, symbols, characters, decorations, and the like are drawn according to information about the vehicle displayed on the vehicle display device 1. -Shaped member. The dial 9 also serves as a design member of a portion of the vehicle display device 1 that is exposed on the front side in the depth direction X, that is, on the side of the viewing position EP and can enter the field of view of the occupant including the driver. The dial 9 may be provided, for example, individually on the respective display surfaces of the speedometer 2, the tachometer 3, the image display unit 4, and the direction indication display unit 5, or may be provided integrally. The dial 9 is provided on the side of the housing 6 at the viewing position EP, and is held between the housing 6 and the pressing member 10 in the depth direction X. The dial 9 constitutes a display surface on which various scales, designs, symbols, characters, decorations, and the like are exposed from the pressing member 10 to the viewing position EP side to display various information. The above-mentioned hands 7 are located on the front side of the dial 9 with respect to the depth direction X, that is, on the viewing position EP side. The dial 9 is, for example, a base material of a polycarbonate sheet made of a light-transmitting material that transmits and diffuses at least light in the visible light range, and the scales, patterns, symbols, characters, Printing is performed in which the shape corresponding to the decoration or the like is hollowed out. With this configuration, the dial 9 has the scales, patterns, symbols, characters, decorations, and the like drawn thereon. Here, the light of the visible light range component is light of a wavelength component in a visible light range that can be visually recognized by a person, for example, light having a wavelength in the range of 360 to 830 nm. The dial 9 is irradiated with light from a light source on the back side in the depth direction X (a light source different from the light source 11), and the irradiated light is applied to the scale, the design, the symbol, the character, the decoration, and the like. Is transmitted, the scales, designs, symbols, characters, decorations and the like are lit and displayed. In the dial 9, an area located between the light guide 12 and the scale section 8, which will be described later, in the depth direction X is not coated with a dark-colored ink having a light shielding property. And a light diffusion region 9a for transmitting and diffusing light.

  The holding member 10 is a member that covers the end portion and the like of the dial 9 from the front side in the depth direction X, and holds and holds the dial 9 between itself and the housing 6. The holding member 10 is made of, for example, a resin material having an insulating property. The holding member 10 exposes the display surface of various information in the speedometer 2, the tachometer 3, the image display unit 4, the direction indication display unit 5 and the like to the front side in the depth direction X, that is, to the viewing position EP side, and It is assembled to the housing 6 with the dial 9 sandwiched between the body 6. Here, the holding member 10 is illustrated as being provided separately on the speedometer 2 side and the tachometer 3 side, for example. However, the present invention is not limited thereto, and they may be provided integrally. The holding member 10 is formed integrally with, for example, a substantially annular decorative ring 14 surrounding the display surface of each of the speedometer 2 and the tachometer 3.

  The light source 11 is for causing the scale 8 to emit light. The light source 11 includes, for example, an LED (Light Emitting Diode) element, but is not limited thereto. Here, the light source 11 emits white light. The light source 11 is provided on the opposite side of the dial 9 from the hands 7 with respect to the depth direction X, that is, on the back side of the dial 9. The light source 11 is mounted on a substrate 13 and is driven and controlled. The light source 11 is housed in the housing 6 together with the substrate 13. The light source 11 emits light including a visible light region component toward the front side in the depth direction X. That is, here, the irradiation direction of the light from the light source 11, that is, the optical axis direction of the light source 11 is a direction along the depth direction X. Here, a plurality of light sources 11 are provided at intervals along an annular shape around the rotation axis C with respect to the scales 8 of the speedometer 2 and the tachometer 3.

  The light guide 12 constitutes an optical system in which light in the visible light range component emitted from the light source 11 is incident, guides the light toward the scale 8, and emits the light. The light guide 12 is made of a material that transmits light in a visible light range component. The light guide 12 is formed of, for example, a resin material having optical transparency such as an acrylic resin, and is sometimes called a prism. The light guide 12 is formed in a substantially flat plate shape in which the depth direction X is the plate thickness direction. The light guide 12 is provided on the front side of the light source 11 and on the back side of the dial 9 in the depth direction X. The light guide 12 is located facing the light source 11 and the dial 9 along the depth direction X. The light guide 12 receives the light of the visible light range component emitted from the light source 11 on the back side in the depth direction X, guides the incident light to the front side in the depth direction X, and The light is emitted toward the front side, that is, toward the viewing position EP, and more specifically, toward the scale 8. The light guide 12 is held by the housing 6 in a positional relationship facing the light source 11 and the dial 9 in the depth direction X. The light guide 12 is spaced from the dial 9 in the depth direction (axial direction) X while being held by the housing 6, whereby an air layer is formed between the light guide 12 and the dial 9. Is secured.

  The scale 8 of the present embodiment is formed integrally with the decorative ring 14 of the holding member 10 described above. Specifically, the scale 8 of the present embodiment includes a base 80, a transparent scale 82 in which a plurality of transparent scales 81 are integrally formed, a colored scale 83, and a slit 84.

  The base material 80 is formed of a light-blocking resin material that blocks light in the visible light range component. The base member 80 is formed in a substantially annular shape around the rotation axis C and along the rotation trajectory direction R of the tip of the pointer 7, and forms a main part of the decorative ring 14.

  The transparent scale 81 is made of a transparent resin material that transmits light in a visible light range component. The transparent scale 81 constitutes one of the scales in the scale section 8. The transparent scale 81 forms the transparent scale 82 by being integrally formed. In the transparent scale section 82, a plurality of transparent scales 81 are integrally formed via a connecting section 85. In the example of FIG. 3, the scale section 8 has one transparent scale section 82 formed by connecting four transparent scales 81 via the connecting section 85. The transparent scale portion 82 has a plurality of transparent scales 81 arranged side by side at intervals along the rotation trajectory direction R, and is exposed from the base material 80 on the front side in the depth direction X, that is, on the visual position EP side. I do. Each transparent scale 81 is formed in a substantially rectangular shape in which a portion exposed from the base material 80 extends in a direction toward the rotation axis C. In other words, the plurality of transparent scales 81 are provided substantially radially about the rotation axis C. In the transparent scale portion 82, each of the transparent scales 81 is independently exposed from the base material 80 because a part of the base 80 is interposed between the transparent scales 81 in the rotation trajectory direction R. Further, the transparent scale portion 82 is provided at a position where the connecting portion 85 is located on the back side in the depth direction X of the base material 80 in a state where the plurality of transparent scales 81 are exposed from the base material 80 and cannot be viewed from the visual position EP. .

  The coloring scale 83 is made of a colored resin material that transmits light in a visible light range component. The emission color of the coloring scale 83 is set by the colored color. Here, the coloring scale 83 is colored red and emits red light. The coloring scale 83 constitutes one of the scales in the scale section 8. The coloring scale 83 is located alongside the transparent scale portion 82 along the rotation trajectory direction R at an interval, and is exposed from the base material 80 to the front side in the depth direction X, that is, to the viewing position EP side. That is, the coloring scales 83 are provided side by side with the plurality of transparent scales 81 constituting the transparent scale portion 82 at intervals along the rotation trajectory direction R. The coloring scale 83 is formed in a substantially rectangular shape in which a portion exposed from the base material 80 extends along a direction toward the rotation axis C. In other words, the coloring scale 83 is provided substantially radially around the rotation axis C together with the plurality of transparent scales 81. Here, the coloring scale 83 is formed in a substantially rectangular shape larger than the transparent scale 81, and a part on the rotation axis C side extends to an inclined surface formed on the base material 80. The coloring scales 83 are exposed from the base material 80 independently of the transparent scales 81 because a part of the base material 80 is interposed between the transparent scale portions 82 on both sides in the rotation locus direction R.

  The slit part 84 is provided so as to be interposed between the transparent scale part 82 and the colored scale 83 in the rotation locus direction R. The slit portion 84 is located on the back side in the depth direction X of the base material 80, and is provided so as to cut an edge between the transparent scale portion 82 and the colored scale 83 with respect to the rotation locus direction R. The slit portions 84 are provided on both sides of the coloring scale 83 with respect to the rotation locus direction R, and are provided so as to cut off the edges of the transparent scale portions 82 on both sides of the coloring scale 83 in the rotation locus direction R. The slit portion 84 extends to the substrate 80 along the depth direction X.

  In the scale 8 configured as described above, for example, first, the transparent scale 82 and the colored scale 83 are formed in two colors. At this time, in the graduation portion 8, each slit portion 84 is formed by interposing a part of the molding die between the transparent graduation portion 82 and the coloring graduation 83 in the rotation trajectory direction R. Thereafter, the entire scale section 8 is formed by insert-molding the entire holding member 10 including the base material 80 with the transparent scale section 82 and the colored scale 83 incorporated therein.

  In the vehicle display device 1 configured as described above, the light of the visible light range component emitted from the light source 11 is incident on the surface on the back side in the depth direction X of the light guide 12, and the inside of the light guide 12 The light is guided to the front side in the depth direction X, and is emitted from the front surface in the depth direction X toward the front side in the depth direction X. In the vehicle display device 1, light emitted from the light guide 12 toward the front side in the depth direction X is diffused through the light diffusion region 9 a of the dial 9, and the diffused light is Are incident on the rear side in the depth direction X of the transparent graduation portion 82 and the coloring graduation 83. Then, in the vehicle display device 1, the light that has entered the transparent scale portion 82 and the colored scale 83 is emitted from the front side in the depth direction X of the transparent scale 81 and the colored scale 83 toward the visual position EP. . As a result, the vehicle display device 1 can cause both the transparent scale 81 and the colored scale 83 to emit light using the light of the visible light range component emitted from the light source 11 as a light emitting portion. At this time, both the transparent scale 81 and the colored scale 83 emit light in their respective emission colors, that is, the transparent scale 81 emits white light and the colored scale 83 emits red light.

  The vehicle display device 1 described above displays the measurement value related to the vehicle by pointing the scale 8 with the hands 7. Here, the scale 8 includes a transparent scale 82 in which a plurality of transparent scales 81 are integrally formed, and a colored scale 83. The scale 8 includes a plurality of transparent scales 81 which are arranged at intervals along the rotation trajectory direction R of the hands 7 in the transparent scale 82 and are exposed from the base material 80. It is configured so as to be located alongside the transparent scale portion 82 along the rotation locus direction R at an interval and exposed from the base material 80. In such a configuration, the scale portion 8 includes the transparent scale portion 81 and the colored scale portion 83 with the slit portion 84 interposed between the transparent scale portion 82 and the colored scale portion 83 in the rotation locus direction R. In both of the light emitting devices 83, the light emitting display can be performed in an appropriate light emitting color without being influenced by the light emitting color of each other. That is, by providing the slit portion 84, the scale portion 8 can prevent a part of the colored scale 83 from being reflected on the transparent scale 81 side. In other words, the line of sight from the viewing position EP side is transparent. A configuration that makes it difficult to reach the coloring scale 83 through the scale 81 can be adopted. Further, in the vehicle display device 1, when forming the transparent scale portion 82 and the colored scale 83, a part of a molding die is interposed in a portion serving as a slit portion 84 between the transparent scale portion 82 and the colored scale 83. Thus, it is possible to reliably prevent the transparent scale portion 82 and the color scale 83 from being mixed. Also in this regard, the vehicle display device 1 can perform luminous display with an appropriate luminescent color on both the transparent scale 81 and the colored scale 83 without being affected by the luminescent color of each other. As a result, the vehicle display device 1 can appropriately emit light from the scale portion 8 that is a light emitting portion.

  Note that the vehicle display device according to the above-described embodiment of the present invention is not limited to the above-described embodiment, and various changes can be made within the scope described in the claims.

  In the above description, the coloring scale 83 is colored red, and is described as being provided at a position indicating “50 km / h” in the scale section 8 of the speedometer 2. However, the present invention is not limited to this. It may be colored.

Reference Signs List 1 vehicle display device 7 pointer 8 scale portion 80 base material 81 transparent scale 82 transparent scale portion 83 coloring scale 84 slit portion C rotation axis R rotation trajectory direction

Claims (5)

A pointer that rotates about a rotation axis as a rotation center,
A scale portion indicated by the pointer,
The scale portion is a transparent scale portion formed by integrally forming a plurality of transparent scales that transmit light of the visible light range component and are transparent, and a base that blocks light of the visible light range component. The scale is a transparent scale that is located side by side at intervals along the rotation locus direction of the pointer and is exposed from the base material, is a colored scale that transmits and transmits light in the visible light range component, and A colored scale that is positioned side by side with the transparent scale part along the rotation locus direction and is exposed from the base material, and the transparent scale part and the colored scale with respect to the rotation locus direction. have a slit portion interposed therebetween,
The slit portion, of the base material, extends to the base material along the depth direction located on the back side opposite to the viewing position side in the depth direction,
The scale portion is characterized in that light is emitted from the light source on the rear side in the depth direction, and the emitted light causes the transparent scale and the colored scale to emit light .
Vehicle display device.   The scale portion is a scale, a pattern, a symbol, a character, or a decoration according to information about the vehicle, which is located on the side of the visual position of a dial on which a decoration is drawn.
  The vehicle display device according to claim 1.   While exposing the display surface of the dial to the viewing position side in the depth direction, a pressing member assembled to the housing in a state where the dial is sandwiched between the housing and the housing,
  The scale portion is formed integrally with the pressing member,
  The vehicle display device according to claim 2.   The scale portion, the base material, the transparent scale portion, and the coloring scale is integrally formed,
  The transparent scale portion is configured such that a portion of the base material is interposed between the transparent scales with respect to the rotation trajectory direction, so that each of the transparent scales is independently from the base material toward the visual position. Exposed,
  The coloring scale is exposed to the visual position side from the base material independently of each of the transparent scales, with a part of the base material interposed between the transparent scale parts in the rotation locus direction. And
  The slit portion is provided so as to cut the edge of the transparent scale portion and the colored scale with respect to the rotation locus direction, and extends to the base material,
  The vehicle display device according to any one of claims 1 to 3.   The substrate, the transparent scale, and the colored scale, the surfaces on the viewing position side are aligned,
  The vehicle display device according to claim 1.

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