JP5463998B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly to a display device mounted on an automobile.

  The display device displays information on the display board. For this purpose, the display board is provided with a design such as a scale of an instrument. Usually, since the display board is formed in a flat plate shape, the appearance of the design tends to be flat. Therefore, it has been proposed to attach a prism so as to cover the scale formed on the display plate so as to give the scale a three-dimensional effect (see, for example, Patent Document 1).

JP 2000-329591 A

  The display panel of the display device is provided with a plurality of types of designs for displaying a plurality of information, and the display panel is illuminated with light emitted from a light source arranged behind the display panel so as to emit light. It has become. Furthermore, a dedicated light source is provided corresponding to each design so that a plurality of types of designs can be individually displayed in a light emitting display or a non-light emitting display, and the design corresponding to the light emitted by the light source is provided. That is, the partition member is arranged along the boundary of the design adjacent to the back of the display board so as not to illuminate the design other than the design to be illuminated. Therefore, the interval between adjacent designs must be increased by the space occupied by the partition member on the back of the display panel. For this reason, the space | interval of the mutually adjacent designs becomes large, and the problem that visibility falls arises.

  The display device disclosed in the prior art document aims to provide a prism with a three-dimensional effect by covering the scale so as to improve the visibility of a display board having a plurality of types of designs. Cannot meet the purpose.

  The present invention has been made paying attention to the above points, and an object of the present invention is to provide a display device in which the visibility of a plurality of designs provided on a display plate is improved by using a lens.

In order to achieve the above-described object, a display device according to claim 1 of the present invention corresponds to a display plate in which a plurality of types of designs are arranged side by side, and provided for each type of design behind the display plate. The light source unit for irradiating the design to transmit illumination and a partition member that partitions the optical path from the light source unit to the design of the display board, and the plurality of types of designs are composed of scale lines, indicators, and numbers A plurality of scale lines are arranged radially starting from the center of rotation of the pointer, a plurality of indicators are arranged side by side in the direction of rotation of the pointer, and a plurality of numbers are arranged concentrically with the scale line. from the side closer, numbers, indicators, graduation lines are arranged in this order, a lens for forming an enlarged virtual image of the graduation lines, is characterized in that arranged so as to cover the gridlines on the front surface side of the display panel.

  In the above-described configuration, since the interval between the plurality of types of designs formed side by side on the display board must be increased by the space occupied by the partition member arranged on the rear side of the display board, The interval of becomes larger.

  Therefore, if a lens that forms an enlarged virtual image of a design is arranged so as to cover the design, the design covered with the lens will be enlarged and visually recognized, and the design covered with the lens and other adjacent designs. The distance between and becomes visible. Thereby, since the space | interval of the multiple types of design arrange | positioned along with it looks narrow, the display apparatus which aimed at the improvement of the visibility of a display board can be provided.

According to a second aspect of the present invention, there is provided a display device in which a plurality of types of designs are arranged side by side, and a corresponding design that is provided for each type of design behind the display plate is irradiated and transmitted. And a partition member that partitions an optical path from the light source portion toward the design of the display board, and the plurality of types of designs are composed of scale lines, indicators, and numbers, and the scale lines are rotations of the pointers. A plurality of indicators are arranged radially starting from the center, a plurality of indicators are arranged side by side in the rotation direction of the pointer, a plurality of numbers are arranged concentrically with the scale line, and from the side close to the rotation center of the pointer, a number, an indicator, A scale line is arranged in order, and a lens for forming an enlarged virtual image of the indicator is arranged so as to cover the indicator on the front side of the display board .

According to the above configuration, the indicator covered with the lens is enlarged and visually recognized by the optical action of the lens, and the interval between the scale lines and the numbers adjacent to both sides of the indicator appears to be narrowed. Therefore, it is possible to provide a display device in which the visibility of the display board is improved.

In this case, lenses, if configured to expand the indicator covered by the lens in the arrangement direction of the plurality of types of design, since it is possible to visually recognize narrowing reliably spacing of the design between the plurality of types, panel It is possible to provide a display device with improved visibility.

1 is an external view of a combination meter 1 that is a display device according to an embodiment of the present invention. It is the II-II sectional view taken on the line in FIG. It is an external view of the state which does not attach the prism 6 which is a lens in the combination meter 1 by embodiment of this invention. It is sectional drawing in the modification of embodiment of the display apparatus which concerns on this invention. It is sectional drawing in the other modification of embodiment of the display apparatus which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking as an example a case where a display device is applied to an automobile combination meter 1.

  A combination meter 1 as a display device is mounted on a driver's seat of an automobile equipped with both an engine and an electric motor as a prime mover, that is, a so-called hybrid automobile, and indicates the rotational speed of the engine with the rotational angle of the pointer as shown in FIG. The tachometer T and the power meter P that indicates the operating state of the electric motor are integrally configured. Here, the operating state of the electric motor means that the electric motor is generating torque, in other words, a state in which the automobile is generating a propulsive force, and the electric motor is operating as a generator, in other words, One of the state where the kinetic energy is converted into electric energy and the vehicle is decelerated, and the state where the kinetic energy is stopped without any of the above.

  The tachometer T is configured as a so-called pointer instrument. That is, the pointer 3 is composed of a scale 20 formed concentrically with the rotation axis of the pointer 3 and a number 23 arranged concentrically with the scale 20. The pointer 3 is rotationally driven by a movement (not shown) such as a stepping motor.

  As shown in FIG. 1, the power meter P is formed into a fan-shaped bar graph as a whole by connecting four elongated fan-shaped indicators 24, 25, 26, and 27 in the circumferential direction. When the electric motor is generating torque, the indicator 24 is lit and displayed. When the electric motor is operating as a generator, indicators 25 to 27 are lit and displayed. In this case, as the generated current increases, the number of indicators that emit light is increased. Specifically, as the generated current increases, only the indicator 25 is lit, the indicators 25 and 26 are lit, and all the indicators 25, 26, and 27 are lit. In the power meter P, in the embodiment of the present invention, the indicator 24 that is lit and displayed when the motor is generating torque is red, and the indicator 25 that is lit and displayed when the motor is operating as a generator. ... To 27 are blue, and are each lit and displayed.

  Here, the operation of the hybrid vehicle equipped with the combination meter 1 which is a display device according to the embodiment of the present invention and the display form of the combination meter 1 corresponding thereto will be described.

  First, the operation of the hybrid vehicle will be described. The hybrid vehicle travels with its torque as a driving force by driving an electric motor at the time of starting and at a middle / low speed traveling. When the vehicle is traveling at a high speed, the engine is started and travels using both the torque generated by the electric motor and the torque generated by the engine as driving forces. On the other hand, when the vehicle is decelerated, the motor is operated as a generator regardless of whether the vehicle is driven only by the motor or by both the motor and the engine, and the kinetic energy of the vehicle is converted into electric energy by the generator. Brake force is generated by charging the battery.

  Subsequently, a display form of the combination meter 1 will be described. When the automobile is running with only the electric motor running, the tachometer T is in a non-display state, that is, the indicators 3, 25, and 23 are not displayed in a light emitting manner, and the indicators 24, 25, 26, and 27 are A light emission state corresponding to the operating state of the electric motor is obtained. When the automobile is running with both the electric motor and the engine running, the tachometer T is in the display state, and the pointer 3, the scale 20, and the numeral 23 are lit and displayed. At the same time, the indicators 24, 25, 26, and 27 also emit light corresponding to the operating state of the motor.

  In the combination meter 1 which is a display device according to the embodiment of the present invention, the power meter P includes four indicators 24, 25, 26, and 27, and generates an operating state of the motor, that is, torque as the motor. The indicator that is lit and displayed is switched according to the state in which power is being generated or the state in which power is being generated as a generator. However, it is not necessary to limit to such a display method, and another display method may be used. . For example, when only the motor is in operation, the four indicators 24, 25, 26 and 27 are lit up and the scale 20 is lit up, and a movement (not shown) is driven to respond to the operating state of the motor by the pointer 3. A display method for instructing any of the indicators 24, 25, 26, and 27 to be performed may be used. Furthermore, the emission color of each indicator or the number of indicators may be changed.

  The pointer 3 is formed of, for example, a resin material, is fixed to a drive shaft of a movement (not shown), and rotates along the surface of the display panel 2 described later by the rotation of the drive shaft.

  The display board 2 is formed in a plate shape from a translucent material, for example, a colorless and transparent resin. On the display panel 2, a scale 20, indicators 24 to 27, and numbers 23, which are a plurality of types of designs, are formed side by side. The scale 20, the indicators 24 to 27, and the numeral 23 are formed so as to have translucency so that they are transmitted and illuminated by light emitted from a light source unit, which will be described later, installed behind the display panel 2. At the same time, the scale 20, the indicators 24 to 27, and the portions around the numeral 23, that is, the background are formed so as to have a light shielding property so as not to transmit light.

  As shown in FIG. 1, the scale 20, indicators 24 to 27, and numbers 23, which are a plurality of types of designs formed on the display panel 2, are arranged side by side and concentrically with respect to the rotation center C of the pointer 3. Has been. That is, the scale 20, the indicators 24-27, and the number 23 are arranged in this order from the outer peripheral side of the display panel 2 toward the center.

  As shown in FIG. 2, behind the display panel 2, the light emitting diode 41 that is a light source for transmissive illumination of the scale 20 and the light emission that is a light source unit for transmissive illumination of the indicators 24, 25, 26, 27. A light emitting diode 46 which is a light source for over-illuminating the diodes 42, 43, 44, 45 and the numeral 23 is arranged. The light emitting diodes 41 to 46 are mounted on the circuit board S as shown in FIG. Here, the light source unit may be composed of one light source, for example, a light emitting diode and a light guide that diffuses light emitted from the light emitting diode. Alternatively, a plurality of light sources, for example, a plurality of light emitting diodes may be arranged so that the display brightness of the design is uniform.

  As shown in FIG. 2, a partition member 7 that partitions an optical path of light emitted from each of the light emitting diodes 41 to 46 is disposed behind the display board 2 and between the display board 2 and the circuit board S. The partition member 7 is made of a light-shielding material such as metal or resin. The partition member 7 is for preventing the light which each light emitting diode 41-46 emits from irradiating designs other than the design which it should irradiate. For example, the light emitted from the light emitting diodes 42 to 46 simultaneously irradiates the scale 20 so that the light emitted from the light emitting diode 41 irradiates only the scale 20 and does not irradiate the indicators 24 to 27 and the numerals 23 other than the scale 20. I try not to. The partition member 7 has a certain thickness in terms of its function. Therefore, the scale 20, the indicators 24-27, and the number 23 formed concentrically with each other on the display board 2, that is, the distance U between the scale 20 and the indicators 24-27, and the indicators 24-27 and the number 23 The interval V is larger than when the partition member 7 is not provided.

  On the surface side of the display board 2, the lens 20 is closely attached to the surface of the display board 2 so as to cover the scale 20 of the scales 20, indicators 24 to 27, and numbers 23, which are three kinds of designs arranged side by side. A certain prism 6 is arranged. The prism 6 is formed in a sector shape corresponding to the shape of the scale 20 from transparent resin or glass. The prism 6 is formed so that the cross section in the radial direction is a figure having a shape as shown in FIG. 2 and has a three-dimensional shape of a locus when the figure is rotated around the rotation center C of the pointer 3. ing. As shown in FIG. 1, the scale 20 includes a plurality of radial lines starting from the rotation center C of the pointer 3, in other words, a scale line 21 that is a fan-shaped line, and an outer periphery of the scale line 21. It is comprised from the circular arc part 22 formed so that a side edge part may be connected. As shown in FIG. 2, the cross-sectional shape of the prism 6 is formed in an arc shape in which the inner peripheral side portion of the display plate 2 on the surface opposite to the display plate 2 is convex outward. In the prism 6, as shown in FIG. 2, the portion that overlaps the arc portion 22 of the scale 20 is on a flat plate, and the portion that overlaps the scale line 21 of the scale 20 has an outwardly convex arc shape.

  As shown in FIG. 2, an annular decorative member 8 is fitted on the outer periphery of the prism 6. The decorative member 8 is formed of, for example, a metal material or a resin material, and is for adjusting the appearance of the combination meter 1 by covering the outer peripheral end surface of the prism 6.

  The display plate 2, the prism 6, the circuit board S, and the decorative member 8 described above are accommodated and held in the lower case 9, as shown in FIG.

  Next, the action and effect of the prism 6, that is, the action and effect exerted on the visibility, which is how the display plate 2 is seen, will be described.

  The arc-shaped portion in FIG. 2 described above of the prism 6 optically acts as a convex lens. Specifically, the arc-shaped portion of the prism 6 in FIG. 2 is a curved surface that curves in the radial direction of the ring-shaped prism 6 (the thickness of the plate changes). Is uniform and planar. Therefore, the expansion action of the arc-shaped portion of the prism 6 as a convex lens is remarkable in the radial direction of the ring-shaped prism 6, that is, the longitudinal direction of the scale line 21, while the circumferential direction of the ring-shaped prism 6, In other words, there is little in the width direction of the scale line 21. Thereby, the length of the scale line 21 is enlarged as compared with the case where the prism 6 is not provided. In other words, the scale line 21 is extended to the rotation center C side of the pointer 3 and is visually recognized. An external view of the combination meter 1 with the prism 6 removed from the display plate 2 is shown in FIG. In this case, since the partition member 7 is installed behind the display board 2, the distance U between the scale 20 and the indicators 24-27, specifically, the distance U between the tip of the scale line 21 and the indicators 24-27 is increased. ing. As a result, the scale line 21 and the numeral 23 appear to extend and the visibility of the tachometer T may be reduced. Therefore, when the prism 6 is arranged so as to cover the scale 20 on the display plate 2, the scale line 21 is moved to the indicators 24 to 27 on the indicators 24 to 27 side due to the expanding action of the arc-shaped portion of the prism 6 as a convex lens. Since it is visually recognized by extending until it abuts, the space between the scale line 21 and the numeral 23 appears to be narrowed, and the visibility of the tachometer T is enhanced.

  Here, the degree of expansion of the prism 6, that is, the scale line 21, is changed by variously changing the dimension Q in the thickness direction of the display plate 2 in the prism 6 and the radius dimension R of the arc portion shown in FIG. The degree of extension can be adjusted.

  According to the embodiment of the present invention described above, of the scale 20, the indicators 24 to 27, and the numeral 23 arranged concentrically with each other on the display board 2, the display board 2 is overlaid on the display board 2 so as to cover the scale 20. By arranging the prism 6, the interval between the scale 20 and the indicators 24 to 27 is narrowed for visual recognition. Thereby, the space | interval of the scale 20 and the number 23 can be shown narrowly, and the visibility of the tachometer T can be improved.

  FIG. 4 shows a cross-sectional view of a modification of the embodiment of the display device according to the present invention. FIG. 4 corresponds to FIG. In this modification, the shape of the prism 6 is changed with respect to the embodiment described above. That is, as shown in FIG. 4, the prism 6 is sandwiched between different types of designs among the scale 20, the indicators 24 to 27, and the numbers 23, which are three types of designs arranged side by side, that is, the scale 20 and the numbers 23. It is set as the shape which covers the indicators 24-27 which are the designed designs. Thereby, the indicators 24 to 27 are enlarged in the arrangement direction of the three designs by the optical expansion action as the convex lens of the prism 6, in other words, extended to the scale line 21 side and the number 23 side and visually recognized. Become. Therefore, the distance between the indicators 24 to 27 and the scale line 21 and the distance between the indicators 24 to 27 and the numeral 23 are reduced, and the visibility of the combination meter 1 can be improved.

  FIG. 5 shows a cross-sectional view of another modification of the embodiment of the display device according to the present invention. FIG. 5 corresponds to FIG. In this other modification, the shape of the prism 6 is changed with respect to the embodiment described above. That is, as shown in FIG. 5, the prism 6 is shaped to cover not only the scale 20 but also the indicators 24 to 27. As a result, the scale line 21 is extended until it is in contact with the indicators 24 to 27 by the optical expansion action of the prism 6 as a convex lens, and the indicators 24 to 27 are also enlarged. Thus, it is extended to the number 23 side and visually recognized. Therefore, according to this modification as well, the distance between the scale 20 and the indicators 24 to 27 and the distance between the indicators 24 to 27 and the numbers 23 are narrowed and visually recognized, so that the visibility of the combination meter 1 can be improved. it can.

  The display device according to the present invention is not limited to the configuration exemplified in the above-described embodiment, and can be implemented with various modifications without departing from the spirit of the present invention. is there.

  Moreover, although the display item with which the combination meter 1 is provided is the tachometer T and the power meter P, these may be replaced with other types of instruments, or other instruments may be added.

1 Combination meter (display device)
2 Display board 20 scale (design)
21 Scale line (design)
22 Arc part (design)
23 Number (Design)
24 Indicator (Design)
25 Indicator (design)
26 Indicator (Design)
27 Indicator (Design)
3 Pointer 41 Light-emitting diode (light source)
42 Light emitting diode (light source)
43 Light Emitting Diode (Light Source)
44 Light Emitting Diode (Light Source)
45 Light Emitting Diode (Light Source)
46 Light Emitting Diode (Light Source)
5 Circuit board 6 Prism (lens)
7 Partition member 8 Decoration member 9 Lower case C Center of rotation P Power meter Q Plate thickness R Radius dimension T Tachometer U, V Spacing

Claims (2)

A display board in which a plurality of types of designs are arranged side by side;
A light source unit for irradiating and transmitting a corresponding design provided for each type of design behind the display plate;
A partition member that partitions an optical path from the light source part toward the design of the display plate,
The plurality of types of designs are composed of scale lines, indicators and numbers,
A plurality of the scale lines are arranged radially starting from the rotation center of the pointer,
The indicator is arranged side by side in the rotation direction of the pointer,
A plurality of the numbers are arranged concentrically with the scale line,
From the side closer to the center of rotation of the pointer, the number, the indicator, the scale line are arranged in order,
Display device, wherein a lens for forming an enlarged virtual image of the gridlines, and arranged so as to cover the graduation lines on the front side of the display panel. A display board in which a plurality of types of designs are arranged side by side;
A light source unit for irradiating and transmitting a corresponding design provided for each type of design behind the display plate,
A partition member that partitions an optical path from the light source part toward the design of the display plate,
The plurality of types of designs are composed of scale lines, indicators and numbers,
A plurality of the scale lines are arranged radially starting from the rotation center of the pointer,
The indicator is arranged side by side in the rotation direction of the pointer,
A plurality of the numbers are arranged concentrically with the scale line,
From the side closer to the center of rotation of the pointer, the number, the indicator, the scale line are arranged in order,
Viewing apparatus lens for forming an enlarged virtual image of the indicator, characterized in that it is arranged so as to cover the indicator on the front side of the display panel.

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