Instrumentation equipment

Abstract

To provide an instrument device that can suppress the reduction in visibility caused by pointers. [Solution] The instrument device 100 includes an image display means 200 that switches between displaying an instrument design and a non-instrument design, a pointer means 400 that points to the information displayed on the image display means 200, and a light source 330 that illuminates or extinguishes the pointer means 400. The pointer means 400 is transparent, allowing the image on the back side to pass through when it is off. When the instrument design is displayed on the image display means 200, it illuminates to allow the observer to recognize both the instrument design and the pointer means 400. When the non-instrument design is displayed on the image display means 200, it extinguishes, allowing the observer to recognize only the non-instrument design.

Description

Technical Field

[0001] The present disclosure relates to an instrument device, and more particularly to an instrument device having pointer means for indicating information displayed on an image display means.

Background Art

[0002] Conventionally, there has been known an instrument device that notifies a driver of the speed of a vehicle, the engine speed, etc. by varying the angle of a pointer. Today, a TFT liquid crystal panel is arranged on the back side of the pointer, and the image displayed on the TFT liquid crystal panel is switched and displayed between an image of a design (hereinafter referred to as an instrument design) composed of information such as numbers and scales for indicating with the pointer, and an image of a design (hereinafter referred to as a non-instrument design) composed of information that does not need to be indicated with the pointer (various images) (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when an image of a non-instrument design is displayed on the TFT liquid crystal panel, there is a problem that the visibility of the image is deteriorated due to the presence of the pointer.

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide an instrument device capable of suppressing a decrease in visibility due to a pointer.

Means for Solving the Problems

[0006] To solve the above problems, the instrument device of the present disclosure includes an image display means for switching between displaying an image consisting of an instrument design and an image consisting of a non-instrument design, a pointer means positioned in front of the image display means for pointing to information displayed on the instrument design, and a light source for emitting or extinguishing the pointer means, wherein the pointer means is transparent enough to transmit the image on the back side when it is extinguished, emits light when the image display means displays an image consisting of the instrument design so that the pointer means can be recognized by the observer together with the instrument design, and extinguishes when the image display means displays an image consisting of a non-instrument design so that only the non-instrument design can be recognized by the observer.

[0007] Here, an instrument design refers to a design used to allow an observer to recognize information by pointing with a pointer. A non-instrument design refers to a design used to allow an observer to recognize information without using a pointer. [Effects of the Invention]

[0008] The instrumentation device described herein makes it possible to suppress the reduction in visibility caused by the indicator. [Brief explanation of the drawing]

[0009] [Figure 1] This is a partial cross-sectional view showing the schematic configuration of the instrumentation device of this disclosure. [Figure 2A] This is a front view showing the instrument device of the present disclosure, with the instrument design displayed. [Figure 2B] This is a front view showing the instrument device of the present disclosure, in a state where a non-instrument design is displayed. [Figure 3] This is a cross-sectional view showing an enlarged view of the guidelines for the instrumentation device described herein. [Figure 4A] Figure 3 is an enlarged view of the indicator section showing the IV-IV cross-section. [Figure 4B] This is an enlarged view of the indicator section showing a different cross-sectional shape in the IV-IV section shown in Figure 3. [Figure 5]This is an enlarged cross-sectional view illustrating other guidelines for the instrumentation device of this disclosure. [Modes for carrying out the invention]

[0010] An example of the instrument device described herein will be shown and explained in detail with reference to the drawings. Figure 1 is a partial cross-sectional view showing the schematic configuration of the instrument device. More specifically, Figure 1 shows a horizontal cross-section of the instrument device 100, where Fr in Figure 1 indicates the front side (front side, near side, viewable side for the observer) of the instrument device 100, Re indicates the rear side (rear side, far side), Ri indicates the right side, and Le indicates the left side.

[0011] Furthermore, Figures 2A and 2B show front views of the instrument device 100, with Figure 2A showing the instrument design in the displayed state and Figure 2B showing the non-instrument design in the displayed state. Here, an instrument design refers to a design used to allow the driver (observer) to recognize information by pointing to the displayed information with a pointer. For example, numerical displays and scale displays such as speedometers, tachometers, fuel gauges, water temperature gauges, power meters, and charge meters, which can be recognized by pointing to specific numerical values ​​with a pointer, are considered instrument designs.

[0012] In Figure 2A, the roughly circular meter frame display 1100, which surrounds the actual needle 400 of the speedometer, and the design of the numerical display 1110 and scale display 1120, which are arranged inside it, constitute instrument design. Similarly, the semicircular meter frame display 1200, which surrounds the right half of the needle 400a in the fuel gauge image, and the design of the scale display 1220, which are arranged inside it, also constitute instrument design.

[0013] On the other hand, non-instrumental designs refer to designs used to allow the driver (observer) to recognize information without the use of a physical pointer. Figure 2B shows a display 1310 indicating vehicle speed and a display 1320 indicating the remaining fuel level. When allowing the driver to recognize this information, there is no need to use (point to) the pointers 400 and 400a. As shown in Figure 2B, designs that allow the driver to recognize information without using the pointers 400 and 400a are considered non-instrumental designs. Furthermore, the information displayed as a non-instrumental design is not limited to vehicle information such as the display 1310 indicating vehicle speed or the display 1320 indicating the remaining fuel level, as it is information that can be recognized by the driver without using the pointers 400 and 400a. Non-instrumental designs include, for example, designs of information that is not necessarily essential for driving a vehicle, such as map information for a car navigation system or song title information played on a car stereo.

[0014] The instrument device 100 includes an image display unit (image display means) 200, a circuit board 300, a pointer (pointing means) 400, a motor 500, an outer case 600 housing these components, and a front lens 700 installed on the front of the outer case 600.

[0015] Furthermore, the instrumentation device 100 has indicators such as turn signals and high beam indicators arranged on the outer periphery of the image display unit 200. The indicators consist of a well-known configuration (for example, a light source mounted on a circuit board 300, a dial with an indicator design formed on it, and an inner case 650, which will be described later, arranged between the light source and the dial to form an illumination chamber).

[0016] The outer case 600 forms the back and side surfaces of the instrument unit 100 and has an external shape that corresponds to the meter shape of the vehicle or the like in which the instrument unit 100 is installed. A front opening 605 is formed on the front of the outer case 600 to allow the image display unit 200 installed inside the outer case 600 to be viewed from the front, and a front lens 700 is installed so as to cover the front opening 605. The front lens 700 is made of smoked acrylic material so as to allow the image display unit 200 to be viewed.

[0017] Also, a return portion 610 formed of black ABS resin is provided on the peripheral surface near the front opening 605 of the outer case 600. By providing the return portion 610, it is possible to prevent the light that has passed through the front lens 700 from being directly reflected and visually recognized by the driver.

[0018] The circuit board 300 has a role of switching the design displayed on the image display unit 200 between an instrument design and a non-instrument design. The circuit board 300 is installed at the center inside the outer case 600. On the front surface of the circuit board 300, a first LED light source 320 for illuminating the image display unit 200 from the back side and a second LED light source (light source) 330 for illuminating the pointer 400 from the back side are provided. Further, a shaft hole 310 for passing the shaft 510 of the motor 500 is formed in the circuit board 300.

[0019] The second LED light source 330 is installed around the shaft hole 310 of the circuit board 300. Also, the first LED light source 320 is installed at a location farther away from the periphery of the shaft hole 310. An inner case 650 is provided on the front side of the circuit board 300, and the inner wall 652 of the inner case 650 partitions the first LED light source 320 and the second LED light source 330. The inner case 650 is formed of polypropylene resin, and the inner wall 652 and the outer wall 654 of the inner case 650 are white so as not to reduce the light quantity of the first LED light source 320 and the second LED light source 330.

[0020] The motor 500 is provided on the back side of the circuit board 300, and the shaft 510 of the motor 500 extends to the front side through the shaft hole 310 of the circuit board 300. Also, a control unit 800 is connected to the motor 500. The control unit 800 consists of a plurality of IC (Integrated Circuit) chips, acquires information such as vehicle speed and engine speed from a vehicle ECU 810 or the like, and performs drive control of the motor 500, the first LED light source 320, the second LED light source 330, the image display unit 200, etc. based on the acquired information. Also, the control unit 800 is connected to the circuit board 300. The control unit 800 acquires information from the circuit board 300 as to whether the design displayed on the image display unit 200 is an instrument design or a non-instrument design.

[0021] The image display unit 200 is provided on the front side of the inner case 650. The light emitted by the first LED light source 320 is guided to the back of the image display unit 200 through the space between the inner wall 652 and the outer wall 654 of the inner case 650. A diffusion plate 900 is provided between the image display unit 200 and the first LED light source 320 (the space between the inner wall 652 and the outer wall 654 of the inner case 650). The diffusion plate 900 is a member obtained by performing diffusion printing on a transparent plate-shaped polycarbonate resin, and diffuses the light received from the first LED light source 320 uniformly and guides it to the image display unit 200.

[0022] The image display unit 200 is composed of a TFT type liquid crystal display formed by forming electrodes on a pair of substrates 210, 220 made of a transparent glass material, injecting liquid crystal 230 between the pair of substrates 210, 220, and attaching polarizing films (not shown) to the outer surfaces of the respective substrates 210, 220. The electrodes of the image display unit 200 are electrically connected to the circuit board 300, and the circuit board 300 switches the design displayed on the liquid crystal 230 to an instrument design or a non-instrument design. By visually recognizing the liquid crystal 230 from the front, the image (instrument design or non-instrument design) of the image display unit 200 can be visually recognized. The display range of the liquid crystal 230 is recognized as the image display area S of the image display unit 200.

[0023] An opening 240 is formed in the image display unit 200 so as to correspond to the position of the shaft hole 310 of the circuit board 300 (on the front side of the shaft hole 310). The upper end of the inner wall 652 of the inner case 650 is connected to the periphery of the opening 240, and the light from the second LED light source 330 guided by the inner wall 652 is guided through the opening 240 to the rotation center 450 of the pointer 400, which will be described below.

[0024] Figure 3 is an enlarged view of guideline 400 shown in Figure 1, and Figure 4A is a view of the IV-IV section in Figure 3.

[0025] The pointer 400 has an indicator portion 410 and a rotating center portion 450, and is formed integrally. The indicator portion 410 has a needle shape (extended shape). The rotating center portion 450 is fixed to the tip of the shaft 510 of the motor 500. The angle of the indicator portion 410 with respect to the image display portion 200 changes according to the rotation of the shaft 510. The pointer 400 (indicator portion 410 and rotating center portion 450) is constructed by incorporating a diffusing material into a base material made of a transparent resin material with transparency. The pointer 400 does not contain any reflective material other than the diffusing material.

[0026] The diffusing material uses nanoparticles with a refractive index greater than that of the base material. In the guideline 400 of this embodiment, as an example, nanoparticles with a particle size of approximately 500 nm to 2000 nm are used. When a diffusing material consisting of nanoparticles of this particle size is used, the transmittance of the indicator section 410 when the second LED light source 330 is not emitting light becomes 81% (haze 15) to 87% (haze 4), and excellent transmittance can be maintained.

[0027] In the pointer 400, a diffusing material with a higher refractive index than the base material is used. Therefore, the light emission intensity in the direction perpendicular to the direction of light incidence (vertical plane of the indicator part 410, surface emission direction) can be increased without reducing the scattering intensity of light passing from the back side (second LED light source 330 side) to the front side of the pointer 400. As a result, when the second LED light source 330 is emitting light, the visibility of the surface-emitting indicator part 410 can be improved.

[0028] More preferably, the difference in refractive index between the base material and the diffuser is 1.4 or less. Specifically, it is preferable to select and adjust the base material and diffuser so that the refractive index difference falls within the range of 0.4 to 1.4. As an example, when polycarbonate (PC) is used as the base material and titanium oxide (TiO2) is used as the diffuser, the refractive index of polycarbonate is 1.58 [nd] and the refractive index of titanium oxide is 2.9 [nd], so the refractive index difference can be kept to 1.4 or less.

[0029] Furthermore, since the guide 400 uses a diffusing material consisting of nanoparticles with a particle size of approximately 500 nm to 2000 nm, it is possible to maintain a high level of transparency in the guide 400. For example, if the particle size of the diffusing material exceeds 2500 nm, the transparency of the guide 400 will decrease significantly. On the other hand, if the particle size of the diffusing material is smaller than 200 nm, which is smaller than the wavelength of light, Mie scattering will occur, and it is thought that the hue will change as it moves further away from the light source, resulting in a yellowish tint.

[0030] In this embodiment, the pointer 400 uses nanoparticles with a particle size of approximately 500 nm to 2000 nm as a diffusing material, which makes it possible to maintain high transparency (transmittance) of the pointer 400 when the second LED light source 330 is turned off, and to increase the luminous intensity of the surface emission of the pointer 400 when the second LED light source 330 is turned on.

[0031] As shown in Figure 4A, the indicator portion 410 of the pointer 400 is formed with a rectangular cross-section in the direction of extension. Furthermore, the outer surfaces of the indicator portion 410 (all outer surfaces: top, left and right sides, and bottom) are mirror-polished. More specifically, the roughness of the outer surfaces of the indicator portion 410 is adjusted to be 0.2 μm or less in terms of arithmetic mean roughness Ra. By mirror-polishing the outer surfaces of the indicator portion 410, the diffusion of light incident on and out of the outer surfaces of the indicator portion 410 can be suppressed, and the transmittance of the indicator portion 410 can be maintained at a high level.

[0032] Furthermore, because the cross-section of the indicator unit 410 is square, it can be made visible to the driver without obstructing (or suppressing) the light passing through the indicator unit 410 in the front-to-back direction. More specifically, the top and bottom surfaces of the indicator unit 410 are planes perpendicular to the direction of propagation of the light output from the image display unit 200. By making the top and bottom surfaces of the indicator unit 410 perpendicular planes in this way, the light passing through the indicator unit 410 will not be diffused in other directions, but will proceed in the direction of the driver's view.

[0033] Therefore, for example, when the second LED light source 330 is turned off and the driver views the non-instrument design displayed on the image display unit 200, the light passing through the indicator unit 410 (see the arrows at the top and bottom rear in Figure 4A) is not diffused within the indicator unit 410 and is visible to the driver. Combined with the transparency of the indicator unit 410, the driver can recognize the non-instrument design without being aware of the presence of the indicator unit 410.

[0034] Furthermore, as is clear from Figure 4A, the side surface of the indicator unit 410 is formed by a plane parallel to the light passing through the indicator unit 410. Therefore, light directed towards the indicator unit 410 from the side is reflected by the side surface (see the arrow from the oblique direction in Figure 4A), and there is no risk of it interfering with the visibility of the light passing through the indicator unit 410. For example, when the second LED light source 330 is turned off and the driver views a non-instrument design displayed on the image display unit 200, the driver can recognize the non-instrument design without being aware of the presence of the indicator unit 410.

[0035] Furthermore, the pointer 400 is provided with a tail portion 470 that extends on the opposite side of the indicator portion 410 relative to the center of rotation 450. The tail portion 470 is a component provided to take into consideration the balance when the indicator portion 410 rotates (changes angle) due to the motor 500.

[0036] Furthermore, a light-shielding cap portion 480 is provided on the front of the rotating center 450 to conceal the rotating center 450 from the driver. As described above, since the pointer 400 is made of a translucent resin, there is a risk that the light from the second LED light source 330 may be visible to the driver when the second LED light source 330 is lit. However, when the instrument design is displayed on the image display unit 200, the driver should focus on the indicator unit 410 and the instrument design. Therefore, by providing a cap portion 480 that blocks the light from the rotating center 450, it is possible to prevent the driver from seeing this light (and the presence of the cap portion 480), thereby improving the visibility of the indicator unit 410 and the instrument design.

[0037] Furthermore, even when a non-instrument design is displayed on the image display unit 200, the viewer should focus on the non-instrument design displayed on the image display unit 200, and it is preferable that the rotating center 450 is not conspicuous. For this reason, by installing a light-shielding cap portion 480 on the front of the rotating center 450, the presence of the rotating center 450 (and the presence of the cap portion 480) can be made less conspicuous.

[0038] In particular, in the instrument device 100 according to the embodiment, as shown in Figure 1, the end P1 of the image display area S of the image display unit 200 that is closer to the axis 510 extends inward (closer to the axis 510) than the position P2 which is the outer edge when viewed from the front of the cap portion 480. By extending the position of the end P1 of the image display area S of the image display unit 200 inward from the position P2 which is the outer edge of the cap portion 480, when the driver views the vicinity of the outer edge of the cap portion 480 from an oblique direction, the driver will see the image display area S of the image display unit 200 located on the back side of the cap portion 480. As a result, the presence of the cap portion 480 (the boundary of the image display area S around the outer edge) becomes less noticeable, and it becomes possible to recognize an image (design) without causing any sense of incongruity, without making the driver aware of the edge of the design (instrument design or non-instrument design) displayed in the image display area S.

[0039] As already explained, the angle of the indicator unit 410 is varied by the drive of the motor 500, and the motor 500 is driven and controlled by the control unit 800. Furthermore, the control unit 800 is connected to the circuit board 300 and obtains information from the circuit board 300 on whether the design displayed on the image display unit 200 is an instrument design or a non-instrument design. When the control unit 800 determines that a non-instrument design is displayed on the image display unit 200, it drives and controls the motor 500 to adjust the angle of the indicator unit 410 and move the indicator unit 410 to a position where it does not obstruct the display content of the non-instrument design.

[0040] For example, in the case of the pointer 400 shown in Figure 2B, the angle of the indicator portion 410 of the pointer 400 is adjusted diagonally downward to the left so that it does not overlap with the display content of the non-instrument design. The angle of the indicator portion 410 is not particularly limited as long as it does not overlap with the display content of the non-instrument design, but generally, it is preferable to adjust the angle so that the indicator portion 410 is facing downwards (the angular position indicating any of the positions from 3 to 9 on the hour hand of a clock).

[0041] Next, we will explain the cases where the instrument design is displayed on the image display unit 200 (Figure 2A) and where a non-instrument design is displayed (Figure 2B). The design displayed on the image display unit 200 can be switched by the driver by operating a screen display switching switch or the like (not shown in the figure).

[0042] When the driver selects an instrument design, the circuit board 300 displays the instrument design on the image display unit 200, as shown in Figure 2A, and also illuminates the first LED light source 320 and the second LED light source 330. The control unit 800 acquires vehicle speed information, etc., from the vehicle ECU 810 and controls the angle of the pointer 400 by driving the motor 500 according to the acquired vehicle speed information, etc.

[0043] When the second LED light source 330 is lit, the light emitted from the second LED light source 330 passes through the hole 240 and enters the back side of the rotating center 450. Since the pointer 400 (indicator part 410 and rotating center 450) contains a diffuser, the light incident on the rotating center 450 is diffused by the diffuser, causing the indicator part 410 to emit light from its surface. This surface emission of light by the indicator part 410 allows the driver to recognize the instrument design and the indicator part 410.

[0044] If the driver selects a non-instrument design, the circuit board 300 displays the non-instrument design shown in Figure 2B on the image display unit 200, illuminates only the first LED light source 320, and turns off the second LED light source 330. The circuit board 300 also acquires vehicle speed information and other data from the vehicle ECU 810 via the control unit 800, and updates the information displayed on the non-instrument design based on the acquired information.

[0045] Furthermore, the control unit 800 acquires information from the circuit board 300 indicating that a non-instrument design is displayed, and drives the motor 500 to move the pointer 400 to an angle that does not overlap with the displayed content of the non-instrument design.

[0046] Since the second LED light source 330 is turned off, no light enters the pointer 400 (indicator part 410 and rotation center 450), and the indicator part 410 does not emit light. Because the indicator part 410 is made of a material with excellent transparency, when the indicator part 410 does not emit light, the light of the non-instrument design displayed on the image display unit 200 passes through the indicator part 410, making the presence of the indicator part 410 less noticeable. As a result, the driver recognizes the non-instrument design displayed on the image display unit 200 without being aware of the presence of the indicator part 410.

[0047] Although the instrumentation device of this disclosure has been described in detail with reference to the drawings above, the instrumentation device of this disclosure is not limited to the configuration of instrumentation device 100 shown in the embodiment.

[0048] For example, in the instrument device 100 in the embodiment, the case where the cross-section of the indicator section 410 is square (rectangular) was described, as shown in Figure 4A. However, the cross-section of the indicator section 410 is not limited to a square shape and may be other shapes. Figure 4B shows an example of a pointer 400 with a different cross-sectional shape. In Figure 4B, the cross-sectional shape is an inverted trapezoid. When the cross-section is an inverted trapezoid, the side surface of the cross-section is composed of inclined surfaces that face the back side.

[0049] Even when the side surface of the cross-section is inclined in this way, light incident on the indicator unit 410 from the side is reflected by this side surface toward the side of the image display unit 200 (see the arrow from the oblique direction in Figure 4B), reducing the risk of obstructing the driver's visibility of the light passing through the indicator unit 410. For this reason, for example, when the second LED light source 330 is turned off and the driver views the non-instrument design displayed on the image display unit 200, the driver can recognize the non-instrument design without being aware of the presence of the indicator unit 410.

[0050] Furthermore, in the instrument device 100 of the embodiment, the case in which a tail portion 470 is formed on the pointer 400 has been described. However, since the tail portion 470 is a component provided to take into consideration the balance of the indicator portion 410 when it rotates (angle changes), if there is no risk of losing balance when it rotates, it is not necessary to provide a tail portion 470 on the pointer 400.

[0051] Furthermore, in the instrument device 100 of the embodiment, the case in which the rotating center 450 of the pointer 400 is integrally formed with the indicator part 410 has been described. However, it is also possible to omit the rotating center 450 of the pointer 400 and have a structure in which the indicator part 410 is directly fixed to the shaft 510 of the motor 500, as shown in Figure 5. Even when the rotating center 450 is not provided in this way, if the light from the second LED light source 330 can be received on the back surface of the indicator part 410 fixed to the shaft 510 and guided into the interior of the indicator part 410, the indicator part 410 can be made to emit light from its surface, similar to the pointer 400 described in the embodiment. Furthermore, since the angle of the indicator part 410 can be changed according to the motor 500 drive state, it is possible to achieve the same effects as the pointer 400 described in the embodiment.

[0052] Furthermore, the numerical values ​​for the particle size of the diffusion material shown in the embodiment, the numerical values ​​for the arithmetic mean roughness Ra on the outer surface of the indicator part 410, the numerical values ​​for the refractive index, the numerical values ​​for the refractive index difference, and the materials of various parts are merely examples and are not limited to these numerical values ​​or materials. [Explanation of symbols]

[0053] 100 ... Instruments and equipment 200 ...Image display unit (image display means) 210,220 …(Image display unit) circuit board 230 …(LCD of the image display unit) 240 … (Image display section) hole (opening) 300 ... Circuit board 310 … (Circuit board) shaft hole 320…1st LED light source 330…Second LED light source (light source) 400,400a...guideline (guideline means) 410 … (Indicator) part 450 … (The center of rotation of the pointer) 470 … (The tail of the guideline) 480 ... Cap part 500 ... motor 510 ... (motor) shaft 600 ... Outer case 605 …(Outer case) front opening 610 …(Outer case) inner lining 650 ... Inner case 652 …(Inner wall of the inner case) 654 … (Inner case) outer wall 700…Front lens 800 ... Control Unit 810 ... Vehicle ECU 900 ... Diffuser 1100, 1200 … (Instrument design) Meter frame display 1110 … (Instrument design) Digital display 1120, 1220 ... (Scale markings for measurement design) 1310 …(Indicator of vehicle speed, not an instrument design) 1320 …(Fuel gauge indicator for non-instrument design) P1 ... (edge ​​of the image display area) P2 … Position (of the outer edge of the cap) S ... Image display area (of the image display unit)

Claims

1. An image display means that switches between displaying images consisting of instrument designs and images consisting of non-instrument designs, An indicator means is positioned in front of the image display means and indicates the information displayed in the instrument design, A light source that causes the indicator means to emit or extinguish light It has, The aforementioned guiding means is It has transparency that allows the aforementioned image on the back to be seen when the light is off. When an image consisting of the instrument design is displayed on the image display means, it emits light to allow the observer to recognize the indicator means together with the instrument design. When the image display means displays an image consisting of the non-instrument design, the lights are turned off to allow the observer to recognize only the non-instrument design. An instrumentation device characterized by the following.

2. The instrument device according to claim 1, characterized in that the guiding means is formed by containing only a diffusing material in the transparent base material having permeability.

3. The instrument device according to claim 2, characterized in that the diffusing material consists of nanoparticles and the refractive index of the diffusing material is greater than the refractive index of the base material.

4. The instrument device according to claim 1, characterized in that the guiding means has an elongated shape, and its cross-section in the direction of elongation is rectangular or trapezoidal.

5. The instrument device according to claim 4, characterized in that the outer surface of the guiding means is mirror-finished.

6. The guiding means, when an image consisting of the non-instrument design is displayed on the image display means, changes the angle relative to the image display means to an angle that does not obstruct the display of the non-instrument design. The instrumentation device according to claim 1, characterized by the following:

7. The light source is positioned on the back side of the image display means. The image display means is provided with an aperture for guiding the light from the light source to the pointer means. The instrumentation device according to claim 1, characterized by the following:

8. The guiding means is provided with a cap portion that has light-shielding properties to prevent the light guided through the opening from being visible to the observer. The instrumentation device according to claim 7, characterized by the following:

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