JP2014215191A - Instrument device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument device which can be easily viewed by a driver, while reducing constraints on design.SOLUTION: An instrument device provided in an instrument panel of a vehicle includes a light-emitting body and a housing fixed to the instrument panel. The housing includes a meter board having a surface where an index is indicated, and an inclined plane which is widened toward a height direction and reflects light from the light-emitting body. When the light-emitting body is located below the inclined plane in the height direction, an inclination angle θ of the inclined plane satisfies the following expression (1) represented by a driver's viewing angle α with respect to the inclined plane, a relative height H of the inclined plane and the light-emitting body, and a width L which is a relative distance in a width direction between the inclined plane and the light-emitting body, and when the light-emitting body is located above the inclined plane in the height direction, the inclination angle θ of the inclined plane satisfies the following expression (2) represented by the viewing angle α, the relative height H and the width L: (1) θ<{α+arctan(H/L)} 1/2, and (2) θ<{α-arctan(H/L)} 1/2.

Description

  The present invention relates to an instrument device that is provided on an instrument panel and displays vehicle speed, engine speed, and the like.

  An instrument panel having instruments such as a speedometer, a tachometer, and a fuel gauge is provided on the instrument panel in front of the driver's seat. As shown in FIG. 9, recently, there is an instrument device in which a display 102 is incorporated in a meter panel 101 on which a speed, an engine speed, and the like are displayed. On the display 102, for example, failure information, travel distance, and the like are displayed. The display 102 is generally composed of a liquid crystal display, an organic EL display, or the like in order to improve visibility in a situation where illumination is low such as at night.

  The housing 103 of the instrument device is provided with an opening 105 that matches the shape of the image display surface 104 of the display 102. The display 102 is provided in an instrument box (not shown) with the image display surface 104 exposed through the opening 105. The housing 103 generally has an ornament 106 attached to the surface of the meter panel 21 for the purpose of improving aesthetics. The ornament 106 includes an inclined surface 107 around the opening 105.

  The speedometer 110 and the tachometer 111 include needles 112 and 113 that are rotatably provided on the meter panel 101. Ornament 106 includes rings 114 and 115 surrounding needles 112 and 113. The needles 112 and 113 are provided with a light emitting portion (not shown) such as an LED on the back surface or the like in order to improve visibility in a situation where the illuminance is low such as at night. The rings 114 and 115 have inclined surfaces 116 and 117 that expand from the display surface in the height direction for the purpose of improving aesthetics and the like.

  However, when the ornament 106 is made of a plated resin, metal, or the like for the purpose of enhancing the design, the following problems occur. That is, a part of the light emitted from the display 102 hits the inclined surface 107 and is reflected in the direction of the driver, or a part of the light emitted from the light emitting portions of the hands 112 and 113 hits the inclined surfaces 116 and 117 and Reflected in the direction. When the reflected light enters the driver's field of view, the driver may be dazzled or feel uncomfortable.

  In order to solve this problem, there has been proposed an instrument that reflects the light of the light guide provided on the instrument in a direction different from the driver's viewing direction by providing a stepped portion on an inclined surface such as a speedometer (for example, a patent) Reference 1).

JP 2006-58131 A

  However, when the staircase is provided on the inclined surface, restrictions on the design of the housing become large and processing becomes difficult. For this reason, the instrument apparatus which a driver | operator is easy to visually recognize, reducing the restrictions on a design was requested | required. Such a problem is not limited to the instrument device having the above-described configuration, but is generally common to instrument devices including a light emitter.

  This invention is made | formed in view of the said situation, The objective is to provide the instrument apparatus which a driver | operator is easy to visually recognize, reducing the restrictions on a design.

  An instrument device that solves the above problem is an instrument device that is provided on an instrument panel of a vehicle, and includes a light emitter and a housing that is mounted on the instrument panel, and the housing has a surface on which an index is displayed. A meter panel; and an inclined surface that expands in a height direction from a surface side of the meter panel and reflects light from the light emitter, wherein the light emitter is in the height direction with respect to the inclined surface. The inclination angle θ of at least a part of the inclined surface is a driver's viewing angle α with respect to the inclined surface, a relative height H of the inclined surface and the light emitting unit, and the inclined surface and the light emission. When the following expression (1) expressed by a width L that is a relative distance in the width direction of the portion is satisfied and the light emitter is above the height direction with respect to the tilt surface, at least a part of the tilt surface Inclination angle θ , The visual angle alpha, satisfying the relative height H, and the following formula represented by the width L (2).

θ <{α + arctan (H / L)} · 1/2 (1)
θ <{α-arctan (H / L)} · 1/2 (2)
According to this aspect, when a part of the light of the light emitter is reflected on the inclined surface, the inclination angle θ of at least a part of the inclined surface is set so as to satisfy the above formula (1) or the above formula (2). Thus, light can be reflected in a direction that is not visually recognized by the driver. Therefore, even if the inclined surface of the housing is made of a highly reflective material for the purpose of enhancing the design, it is possible to suppress the driver from being dazzled by the reflected light or causing the driver to feel uncomfortable. For this reason, since the restrictions with respect to the material of the housing in the circumference | surroundings of a light-emitting body are eased, the instrument apparatus which a driver | operator is easy to visually recognize can be provided, improving designability.

  In the instrument device, the light emitter is a display having an image display surface, and the inclined surface is disposed above the image display surface in the height direction, and at least an outer periphery of the image display surface. While being provided in part, the inclination angle of at least a part of the inclined surface is expressed by the viewing angle α, the relative height H of the lower end of the inclined surface and the image display surface, and the width L of the image display surface. It is preferable to satisfy the formula (1).

  According to this aspect, when the inclined surface provided on the outer periphery of the display reflects the light from the display, the inclination angle is set so as to satisfy the formula (1), thereby preventing the driver from seeing the inclination angle. It can reflect light. For this reason, even if it comprises this inclined surface from a material with high reflectance, it can suppress a driver | operator being dazzled by the light of a light-emitting body, or making a driver | operator feel uncomfortable. Accordingly, since the restrictions on the housing material around the display are reduced, it is possible to provide an instrument device that is easy for the driver to visually recognize while improving the design.

  In the instrument device, the inclined surface has a frame shape surrounding the rectangular image display surface, the inclination angle of the inclined surface adjacent to one side of the image display surface, and the other side of the image display surface It is preferable that the inclination angles of the inclined surfaces adjacent to each other satisfy the above formula (1) and have different values.

  According to this aspect, among the inclined surfaces surrounding the image display surface, the inclination angles of the inclined surface adjacent to one side of the image display surface and the inclined surface adjacent to the other side satisfy the above formula (1), respectively. The values are different from each other. That is, the viewing angle of the driver is different depending on, for example, when viewing the inclined surface in the vertical direction and when visually recognizing the inclined surface in the horizontal direction. Because. For this reason, it can suppress that the light reflected on the inclined surface enters into a driver | operator's visual field over the whole region of a frame-shaped inclined surface.

  About the said meter apparatus, the said light-emitting body is provided in the needle | hook of the meter which displays vehicle information, The said inclined surface is cyclic | annular or fan-shaped, and is arrange | positioned on the outer side of the rotation locus | trajectory of the said needle | hook, It is arranged below the height direction, and the inclination angle of the inclined surface is the viewing angle α, the relative height H of the lower end of the inclined surface and the light emitter, and the relative distance of the inclined surface and the light emitter. It is preferable to satisfy the formula (2) expressed by a certain width L.

  According to this aspect, when the inclined surface reflects the light from the light emitting unit provided on the needle indicating the vehicle information, the inclination angle is set so as to satisfy the above formula (2), so that the driver can Light can be reflected in a direction that is not visually recognized. For this reason, even if it comprises this inclined surface from a material with high reflectance, it can suppress a driver | operator being dazzled by reflected light, or making a driver | operator feel uncomfortable. Therefore, since restrictions on the housing material around the meter are reduced, it is possible to provide an instrument device that is easy for the driver to visually recognize while improving the design.

  In the instrument device, it is preferable that the inclination angle of the inclined surface is constant, and the expression (2) using the minimum value among the viewing angles α that the driver can take in the circumferential direction of the inclined surface is satisfied.

  According to this aspect, the inclined surface provided around the meter or constituting the meter is annular, and since the inclination angle is constant, the processing is easy and the aesthetic appearance is not impaired. Further, since the inclination angle satisfies the formula (2) using the minimum value of the viewing angle α that the driver can take, the light reflected by the inclined surface over the entire area of the annular inclined surface is in the driver's field of view. Entering can be suppressed.

The perspective view which shows the instrument panel by which the instrument apparatus which concerns on this invention is arrange | positioned. The top view of the instrument device. The end view of the principal part in the width direction of the instrument device. The figure explaining the relationship between the inclination | tilt angle in the ornament of the instrument apparatus, and the light radiate | emitted from the display and reflected on the inclined surface of the ornament. The figure explaining the visual angle used when setting the said inclination-angle. The figure explaining the visual angle used when setting the said inclination-angle. The end view in the width direction of the speedometer provided in the instrument device. The figure explaining the relationship between the inclination angle in the ornament of the instrument device, and the light emitted from the light emitting portion of the speedometer and reflected on the inclined surface of the ornament. The top view of the conventional instrument apparatus.

  Hereinafter, an embodiment of an instrument device will be described. As shown in FIG. 1, an instrument device 11 that displays speed, engine speed, and the like, and a navigation device 12 that performs route guidance and the like are incorporated in an area in front of the driver's seat S of the instrument panel 10 of the vehicle. ing. In the present embodiment, the instrument device 11 is provided on the back side of the steering wheel W.

  As shown in FIG. 2, the instrument device 11 includes a housing 20 composed of a plurality of members. The housing 20 has a meter panel 21 formed in a concave shape and a cover (not shown). The meter panel 21 has a horizontally long shape in plan view, and numbers, characters, and the like for displaying the speed and engine speed to the driver are displayed on the surface thereof. By covering the opening of the meter panel 21 with the light-transmitting cover, entry of dust and water into the instruments is suppressed. The longitudinal direction of the surface of the meter panel 21 is the width direction WD, the short direction is the depth direction DP, and the direction normal to the surface of the meter panel 21 and starting from the surface is the height direction HG.

  The meter panel 21 has a rectangular first opening 22 and a pair of second openings 23 formed therethrough. The first opening 22 is formed at the center in the width direction of the meter panel 21 and has a rectangular shape in plan view. The second opening 23 is formed on both sides of the first opening 22 and has a circular shape. The 1st opening part 22 exposes the display 50 as a light-emitting body with which the driver | operator was mounted | worn from the back surface of the meter panel 21 so that a driver | operator can visually recognize. The second opening 23 is provided to connect the rotational axis of the needle of the speedometer 51 and the tachometer 52 indicating the engine speed to an instrument body (not shown) provided on the back surface of the meter panel 21. .

  First, the configuration of the display 50 and the housing 20 around the display 50 will be described. As shown in FIG. 3, a support plate 24 that supports the display 50, the display 50, and the like is provided on the back side of the meter panel 21. In the present embodiment, the display 50 is composed of a liquid crystal display, and includes a liquid crystal panel that encloses liquid crystal and includes electrodes, an illumination unit that irradiates light to the liquid crystal panel, a light guide prism, a color filter, a glass substrate, and the like. Yes. An image display surface 50 a that is a main surface of the glass substrate and displays an image or the like so as to be visible to the driver is exposed through the first opening 22 of the meter panel 21.

  An ornament 25 is mounted on the surface 21a of the meter panel 21 in order to improve the beauty. As shown in FIG. 2, the ornament 25 has a rectangular frame-shaped frame portion 26 along the shape of the rectangular image display surface 50 a and a pair of annular portions 27 provided on both sides of the frame portion 26. Yes. The frame portion 26 may be a frame shape along the image display surface 50a, and is not limited to a square frame shape.

  In the mounted state in which the ornament 25 is mounted on the meter panel 21, the frame portion 26 makes it difficult to see the gap in the height direction HG between the display 50 and the meter panel 21, the edge of the display 50, and the like when viewed from the driver side. And it has the inclined surface for improving the designability. The annular portion 27 has a substantially annular shape in a plan view, and is provided outside the rotation locus of the needle 51 a of the speedometer 51 and the needle 52 a of the tachometer 52. The annular portion 27 has an inclined surface on which a scale of speed and rotational speed is displayed.

  The ornament 25 includes a resin formed into a shape in which a square frame-shaped frame portion 26 and an annular portion 27 are integrated in a plan view, and a plating layer formed on the resin. A plating layer consists of films, such as a metal, and is exhibiting silver color in this embodiment. That is, the ornament 25 of the present embodiment is more likely to reflect light from the display 50 or the like than an ornament made of black resin. The color of the plating layer is not limited to silver, and may be gold, bronze, or the like. The ornament itself may be a metal. In addition, about the plating layer, illustration is abbreviate | omitted for convenience.

  As shown in FIG. 3, the frame portion 26 includes a flat portion 28 that is disposed substantially parallel to the surface 21 a in the mounted state, and a bent portion 29 that is bent with respect to the flat portion 28. The flat portion 28 and the bent portion 29 constitute an opening for exposing the image display surface 50 a of the display 50. In the mounted state, the bent portion 29 makes it difficult for the driver to visually recognize the gap between the display 50 and the meter panel 21. Further, between the bent portion 29 and the flat portion 28, an inclined surface 30 is provided that forms an inclination angle θ with respect to the surface 21a. As shown in FIG. 2, the inclined surface 30 surrounds a vertical side parallel to the depth direction DP (vertical direction) of the display 50 and a horizontal side parallel to the width direction WD. The inclination angle θ1 of the inclined surface 30a adjacent to each vertical side is constant, and the inclination angle θ2 of the inclined surface 30b adjacent to each horizontal side is constant, but the inclination angle θ1 and the inclination angle θ2 are different from each other. Note that when the inclination angles θ1 and θ2 are not distinguished from each other, they are simply referred to as the inclination angle θ.

  A method for setting the inclination angle θ of the inclined surface 30 and its operation will be described. Since the setting methods of the inclination angles θ1 and θ2 of the inclined surfaces 30a and 30b are the same, here, the inclined surface 30a adjacent to the vertical side of the display 50 will be described as an example. As shown in FIG. 4, when the inclined surface 30 is above the image display surface 50a of the display 50, the inclination angle θ1 is set to satisfy the following expression (1). The width L is the width of the opening of the ornament 25, the relative height H is the relative height from the lower end of the inclined surface 30 on the display 50 side to the image display surface 50a, and the viewing angle α is the frame 26. This is the viewing angle of the driver D with respect to the entire display 50 including the display.

θ <{α + arctan (H / L)} · 1/2 (1)
As shown in FIG. 5, the viewing angle α is defined by the outermost line Z1 and the meter panel that are the outermost of the fields of view Z that can be taken when the driver D is in a normal posture, a left-side tilted posture, and a right-side tilted posture. 21 is an angle formed by the surface 21a of 21 or a surface parallel to the surface 21a. In the present embodiment, the outermost line Z1 indicating the viewing direction of the right eye with respect to the right inclined surface 30a as viewed from the driver D and the inner line Z2 indicating the viewing direction of the left eye, the outermost line Z1 is the viewing angle (outermost circumscribed angle). Is small. When the light emitted from the display 50 is reflected by the inclined surface 30a, the reflected light is reflected outside the field of view Z or crosses the field of view Z so that the driver does not see the reflected light. It is necessary to reflect in the opposite direction to the D side.

  As shown in FIG. 4, when a part of the light emitted from the display 50 is incident on the inclined surface 30a having the inclination angle θ, if the angle of the incident light IL is the incident angle φ, the reflection angle of the reflected light DL is The surface parallel to the surface 21 a of the meter panel 21 can be expressed as “θ + φ”. This reflection angle needs to satisfy the following formula (3).

θ + φ <α (3)
Although the incident angle φ varies depending on the light emission position from the display 50, the incident angle φ is the largest when the light is emitted from a position farthest from the inclined surface 30a. The relationship between the incident angle φ and the tilt angle θ when the light is emitted from the position farthest from the inclined surface 30a is expressed by the following equation (4) from the relationship of complex angles. In the figure, “γ” is the value of arctan (H / L).

θ = φ + arctan (H / L) (4)
By substituting the incident angle φ obtained from Expression (4) into Expression (3), Expression (1) is obtained. By setting the inclination angle θ in this way, even if the light emitted from the display 50 is reflected by the inclined surface 30a, the reflected light DL advances toward the outside of the display 50 and does not enter the driver's field of view Z. When the light emitted from the display 50 enters the bent portion 29, the incident light has a large incident angle, so that the reflected light travels across the field of view Z in a direction different from the driver D.

  In addition, the inclination angle θ of the inclined surface 30b adjacent to the side in the width direction of the display 50 is obtained in the same manner. However, since the value of the viewing angle α is different, the inclination angle θ differs with respect to the inclined surface 30a along the vertical direction. Value. As shown in FIG. 6, the viewing angle with respect to the inclined surface 30b in the field of view Z that can be taken when the driver D having a standard sitting height is in a normal posture and a posture in which the head is moved is defined as a “viewing angle α”. In FIG. 6, the minimum viewing angle with respect to the inclined surface 30 b is shown as the viewing angle α in the field of view Z that can be taken when the driver D with the standard sitting height is in the normal posture and the posture in which the head is moved. However, the tilt angle θ may be set so as to satisfy the above formula (1) even in the case of a 99% eye range in the field of view corresponding to the 99th percentile according to JIS D0021.

  Next, the configuration of the speedometer 51 and the tachometer 52 and the housing 20 around them will be described together with the operation thereof. Although the speedometer 51 and the tachometer 52 are different from each other in the instrument body, the shapes of the housing 20 and the like in the periphery thereof are almost the same. Accordingly, the speedometer 51 will be described as an example here.

  As shown in FIG. 2, the speedometer 51 includes a needle 51 a that indicates speed, an instrument body (not shown) that rotates the needle 51 a based on an electric signal input from a sensor or the like, and an annular portion 27 of the ornament 25. doing. The needle 51a has a needle body and a rotation shaft portion, and the rotation shaft portion is inserted through a second opening 23 formed in the meter panel 21 and supported by the instrument body. The speed is displayed in the area surrounded by the annular portion 27 of the meter panel 21, and the annular portion 27 is provided with a scale for emitting light.

  As shown in FIG. 7, the annular portion 27 is provided with an inclined surface 31 that expands in the height direction HG. The inclined surface 31 has the 1st inclined surface 31a provided in the innermost side, and the 2nd inclined surface 31b provided in the outer side rather than this 1st inclined surface 31a. The inclination angle θ of the first inclined surface 31a is smaller than the inclination angle of the second inclined surface 31b. Further, an outer inclined surface 32 that is inclined in a direction different from the inclined surface 31 is continuous with the second inclined surface 31b. The outer inclined surface 32 is an edge different from the edge continuous with the inclined surface 31, and is continuous with the surface of the meter panel 21 or continuous with the frame portion 26.

  The needle 51a has a light emitting portion 51b as a light emitter on the back surface of the needle body. The light emitting portion 51b is composed of an LED or the like and has an elongated shape. The length of the light emitting portion 51b in the longitudinal direction is, for example, shorter than the needle body, and the width thereof is shorter than the needle body. The light emitting unit 51b irradiates the needle body from the back surface with the light reflected by the meter panel 21.

  Further, the light emitted from the light emitting portion 51 b is reflected not only on the surface 21 a of the meter panel 21 but also on the first inclined surface 31 a of the annular portion 27. The inclination angle θ of the first inclined surface 31a is constant in the circumferential direction. The inclination angle θ of the first inclined surface 31a is set so as to satisfy the following expression (2). As shown in FIG. 8, the width L is the width from the tip of the light emitting portion 51b to the lower end of the first inclined surface 31a, and the relative height H is the distance between the tip of the light emitting portion 51b and the lower end of the first inclined surface 31a. The relative height and the viewing angle α are the viewing angles of the driver D with respect to the entire speedometer 51 including the annular portion 27.

θ <{α-arctan (H / L)} · 1/2 (2)
Since the annular portion 27 has a substantially annular shape, the viewing angle of the driver is different at each position. However, when the inclination angle θ is set, the viewing angle α is the smallest of the viewing angles that can be taken with respect to the annular portion 27. Is set. By setting the viewing angle to the minimum value, the upper limit value of the inclination angle θ can be minimized.

  When the light emitted from the light emitting portion 51b is reflected by the first inclined surface 31a, the reflected light is reflected outside the field of view Z or crosses the field of view Z so that the driver does not visually recognize the reflected light. Therefore, it is necessary to be reflected in the direction opposite to the driver D side. However, the speedometer 51 is different from the display 50 in that the light emitting portion 51b is located above the height direction HG of the first inclined surface 31a.

  As shown in FIG. 8, when a part of the light emitted from the light emitting portion 51b is incident on the first inclined surface 31a having the inclination angle θ, the reflected light DL is assumed to be the incident angle φ. Can be expressed as “θ + φ” with respect to a plane parallel to the surface 21 a of the meter panel 21. This reflection angle needs to satisfy Expression (3) as in the case of the display 50. In the following formula (3), α is a viewing angle with respect to the annular portion 27.

θ + φ <α (3)
Although the incident angle φ differs depending on the light emission position of the light emitting portion 51b, since the light emitting portion 51b is located above the first inclined surface 31a, it is incident when light is emitted from the position closest to the first inclined surface 31a. The angle φ is the largest. The relationship between the incident angle φ and the tilt angle θ when light is emitted from the tip position closest to the first inclined surface 31a is expressed by the following equation (5) from the relationship of the complex angle. In the figure, “γ” is the value of arctan (H / L).

θ = φ-arctan (H / L) (5)
By substituting the incident angle φ obtained from Equation (5) into Equation (3), Equation (2) is obtained. By setting the inclination angle θ in this way, even if the light emitted from the light emitting portion 51b is reflected by the first inclined surface 31a, the light advances toward the outside of the speedometer 51 and does not enter the driver's field of view Z. Further, when the light emitted from the light emitting unit 51b is incident on the second inclined surface 31b, the incident angle is large, so that the reflected light travels across the field of view Z in a direction different from the driver D.

  Further, by replacing “arctan (H / L)” with “γ”, Expression (1) and Expression (2) can be expressed by Expression (6). When “γ” represented by the width L and the relative height H is above the horizontal line L1 passing through the lower end of the inclined surface and parallel to the surface 21a of the meter panel 21, the value is positive, and the horizontal line L1 When under, its value is negative.

θ <{α−γ} · 1/2 (6)
As described above, according to the embodiment, the effects listed below can be obtained.

  (1) According to the embodiment, the ornament 25 constituting the housing 20 includes the inclined surface 30 surrounding the image display surface 50a of the display 50, and the inclined surface 30 is higher in the height direction HG than the image display surface 50a. Provided above. The inclined surface 30 is formed of a plating layer that reflects light from the display 50. By setting the inclination angle θ of the inclined surface 30 to satisfy the above formula (1), it is possible to reflect light in a direction that is not visually recognized by the driver. For this reason, it is possible to suppress the driver from being dazzled by reflected light or feeling uncomfortable. Therefore, since the restrictions on the design of the material of the ornament 25 are reduced, it is possible to provide the instrument device 11 that is easy for the driver to visually recognize while improving the design.

  (2) According to the embodiment described above, the inclined surface 30 surrounding the image display surface 50a of the display 50 has a rectangular frame shape in plan view, and the inclination angle θ1 of the inclined surface 30 adjacent to the vertical side of the image display surface 50a. The inclination angle θ2 of the inclined surface 30 adjacent to the horizontal side satisfies the above formula (1), but the values are different from each other. That is, since the viewing angle α of the driver D differs depending on the vertical inclined surface 30 and the horizontal inclined surface 30, the inclination angles θ1 and θ2 satisfying the formula (1) according to the visual angle α are also different values. Is set. Further, although the vertical inclined surface 30 and the horizontal inclined surface 30 are continuous, their boundaries are clarified by the corners of the square frame, so that the aesthetic appearance is not impaired even if the inclination angles are different.

  (3) According to the above embodiment, the ornament 25 constituting the housing 20 includes the inclined surface 31 provided outside the rotation locus of the needles 51 a and 52 a of the speedometer 51 and the tachometer 52, and the inclined surface 31. Is provided below the light emitting portion 51b of the needles 51a and 52a in the height direction HG. Moreover, the inclined surface 31 is comprised from the plating layer which reflects the light from the light emission part 51b. By setting the inclination angle θ of the first inclined surface 31a constituting the inclined surface 31 so as to satisfy the above formula (2), it is possible to reflect light in a direction that is not visually recognized by the driver. For this reason, it is possible to suppress the driver from being dazzled by reflected light or feeling uncomfortable. Therefore, since the restrictions on the design of the material of the ornament 25 are reduced, it is possible to provide the instrument device 11 that is easy for the driver to visually recognize while improving the design.

  (4) According to the above embodiment, the inclined surface 31 constituting the speedometer 51 and the tachometer 52 is annular, and the inclination angle θ is constant. Further, since the inclination angle θ satisfies the expression (2) using the minimum value of the viewing angle α that the driver can take, the driver is dazzled by the light of the light emitter in the entire area of the annular inclined surface 31. It is possible to suppress a sense of incongruity.

In addition, the said embodiment can also be suitably changed and implemented as follows.
-In above-mentioned embodiment, although the annular part 27 of the ornament 25 was made into the substantially annular shape, other shapes, such as a fan shape and an ellipse shape, may be sufficient. Further, although the frame portion 26 has a square frame shape in plan view, it may have other shapes such as a fan shape or an elliptical shape. For example, when the image display surface viewed from the driver has a fan shape, the frame portion 26 also has a fan shape. At this time, the inclined surface of the arc-shaped portion of the frame portion 26 and the inclined surface of the linear portion may have different inclination angles.

  -You may use methods other than the method mentioned above for the setting method of viewing angle (alpha). For example, you may determine based on the viewing angle obtained by an experimental value. For example, a minimum value, an average value, or the like among viewing angles obtained through experiments can be used.

  In the above embodiment, the inclination angle θ of the inclined surface 30 of the frame portion 26 provided on the outer periphery of the display 50 and the inclination angle θ of the inclined surface 31 of the annular portion 27 constituting the speedometer 51 and the tachometer 52 are described above. Although Formula (1) or Formula (2) is satisfied, the present invention is not limited to this. It is sufficient that at least one of the frame portion 26, the inclined surface 31 of the speedometer 51, and the inclined surface 31 of the tachometer 52 has an inclination angle θ that satisfies the above formula (1) or formula (2). For example, when the annular portion 27 constituting the tachometer 52 is made of a low reflectance material, only the inclination angle θ of the first inclined surface 31a of the speedometer 51 is set so as to satisfy the expression (2). May be.

  In the above embodiment, the inclined surface with the inclination angle θ is provided on the entire circumference of the frame portion 26, but the range in which the inclined surface is provided may be changed as appropriate. For example, the upper side and the lower side in the opening of the frame portion 26 may be surfaces perpendicular to the image display surface 50a of the display 50 or surfaces made of a material having low reflectance, and the right and left sides may be inclined surfaces having an inclination angle θ. Alternatively, at least one of the four inclined surfaces 30a and 30b is an inclined surface having an inclination angle θ satisfying the formula (1), and the rest is made of a material having an inclination angle close to 90 ° or a low reflectance. It is good also as an inclined surface.

  In the above embodiment, the inclination angle θ of each inclined surface 31 constituting the speedometer 51 and the tachometer 52 is made constant, but the inclination angle θ may be changed in the circumferential direction of the inclined surface 31. For example, when the inclined surface 31 is divided into the upper right side, the upper left side, the lower right side, and the lower left side, only the region that is likely to be reflected on the driver side is set to satisfy the formula (2), and other regions The inclination angle at may be set as appropriate. In that case, if the inclined surface is such that the inclination angle continuously changes, instead of providing a step between the surfaces having different inclination angles, an appearance with excellent design can be obtained.

  In the above embodiment, the ornament 25 is a molded product in which the frame portion 26 and the annular portion 27 are integrated. However, the frame portion 26 and the annular portion 27 may be formed as separate molded products. The shape of the ornament 25 is not limited to the shape described above, and it is sufficient that at least the inclined surface having the inclination angle θ is provided on the light emitter side.

  In the above embodiment, the inclined surfaces 30 and 31 are formed on the ornament 25. However, when the housing does not include the ornament 25, it corresponds to the inclined surfaces 30 and 31 described above in the housing around the light emitter. An inclined surface may be provided.

  In FIG. 1, the instrument device 11 is disposed in front of the driver D, but may be disposed on the front right side or the front left side. Moreover, although the instrument apparatus 11 was provided in the vehicle by which the driver's seat S is arrange | positioned on the right side, you may provide it in the vehicle by which a driver's seat is arrange | positioned on the left side.

  In the above embodiment, the light emitter is embodied in the light emitting portion of the needles 51 a and 52 a of the display 50, the speedometer 51, and the tachometer 52, but is not limited to this as long as it is a device provided on the instrument panel 10. For example, the present invention can be applied to the navigation device 12 shown in FIG. 1, various displays, meters, and the like attached to the instrument panel 10.

  In the above embodiment, the inclined surface having the inclination angle θ is a flat surface that is not uneven and is not curved, but may be an uneven surface or a curved surface. When the inclined surface in the vicinity of the light emitter is an uneven surface and a curved surface, for example, a tangent line is taken at an arbitrary point on the inclined surface, and the angle of the tangent to the surface parallel to the surface 21a of the meter panel 21 is the inclination angle θ. Good.

  DESCRIPTION OF SYMBOLS 10 ... Instrument panel, 11 ... Instrument apparatus, 20 ... Housing, 21 ... Meter board which comprises a housing, 21a ... Surface, 25 ... Ornament which comprises a housing, 26 ... Frame part which comprises a housing, 27 ... Constructs a housing 30, 30a, 30b, 31, 31a ... inclined surface, 50 ... display as light emitter, 50a ... image display surface, 51 ... speedometer as meter, 51b ... light emitter as light emitter, 52 ... Tachometer as a meter, 51a, 52a ... needle, H ... relative height, L ... width, [theta], [theta] 1, [theta] 2 ... inclination angle [theta], [alpha] ... viewing angle.

Claims (5)

In the instrument device provided in the instrument panel of the vehicle,
A light emitter;
A housing mounted on the instrument panel;
The housing is
A meter panel having a surface on which an indicator is displayed;
Expanding from the surface side of the meter panel toward the height direction, and having an inclined surface that reflects light from the light emitter,
When the light emitter is below the inclined surface in the height direction, an inclination angle θ of at least a part of the inclined surface is a driver's viewing angle α with respect to the inclined surface, the inclined surface, and the light emission. Satisfying the following expression (1) represented by the relative height H of the body and the width L, which is the relative distance in the width direction of the inclined surface and the light emitter,
When the light emitter is above the inclined surface in the height direction, an inclination angle θ of at least a part of the inclined surface is represented by the viewing angle α, the relative height H, and the width L. An instrument device that satisfies the following formula (2):
θ <{α + arctan (H / L)} · 1/2 (1)
θ <{α-arctan (H / L)} · 1/2 (2) The light emitter is a display having an image display surface,
The inclined surface is disposed above the image display surface in the height direction, provided on at least a part of the outer periphery of the image display surface,
The inclination angle of at least a part of the inclined surface satisfies the expression (1) expressed by the viewing angle α, the relative height H of the lower end of the inclined surface and the image display surface, and the width L of the image display surface. The instrument device according to claim 1. The inclined surface has a frame shape surrounding the rectangular image display surface,
The inclination angle of the inclined surface adjacent to one side of the image display surface and the inclination angle of the inclined surface adjacent to the other side of the image display surface satisfy the equation (1) and are different from each other. The instrument device according to claim 2. The light emitter is provided on a meter needle for displaying vehicle information,
The inclined surface has an annular shape or a fan shape and is disposed outside the rotation locus of the needle, and is disposed below the light emitting body in the height direction,
The inclination angle of the inclined surface is expressed by the expression (2) expressed by the visual angle α, the relative height H of the lower end of the inclined surface and the light emitter, and the width L which is the relative distance between the inclined surface and the light emitter. The instrument device according to claim 1, wherein:   The instrument device according to claim 4, wherein the inclination angle of the inclined surface is constant and satisfies the equation (2) using a minimum value of the viewing angle α that the driver can take in the circumferential direction of the inclined surface. .

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