JPH0516618Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device for a vehicle instrument or the like.

[Problems to be solved by conventional techniques and ideas]

For example, in order to realize safe driving, it is necessary for a driver to clearly recognize the display of a vehicle instrument regardless of day or night. FIG. 5 shows the configuration of a conventional vehicle instrument, in which a cooling water temperature gauge 12, a speedometer 13, and a fuel gauge 14 are provided on an instrument panel 11, and a headlight is installed near these instruments. Alarm display boards 15-1 to 15-3 that display abnormal conditions of various parts of the vehicle, such as upward display and brake wear.
is provided.

The structure of the display device is shown in Fig. 6 when viewed from the A-A cross section of the speedometer section. An internal machine 17 is fixed on the surface, and a dial 18 is fixedly supported so as to cover the open surface of the case 16 perpendicular to the circumferential surface of the internal machine 17.

A pointer 19 for displaying speed is mounted on the dial 18, and the pointer 19 cooperates with the scale and characters of the dial 18 to display the speed by rotating about its rotation axis. In the vicinity of the dial 18, the closed surface of the case 16 is integrally formed to protrude in the direction of the dial 18 in a substantially rectangular cylinder shape, and the end surface on the dial 18 side is an open surface. A rectangular parallelepiped plate-shaped alarm display board 15-2 is attached to cover this open surface, and a lamp 20 is attached to the closed surface of the case 16 corresponding to the alarm display board 15-2. Separately from the lamp 20, a lamp 21 is attached to a peripheral position of the closed surface of the case 16, and a cap 25 covers the lamp 21.

A facing 22 is disposed on the case 16 so as to cover the gap between the peripheral part of the dial 18 and the case 16. At this time, a slight gap 23 is provided between the dial 18 and the endpaper 22. Dial plate 18
and the pointer 19 thereon are covered by a transparent plate 24 fixed to the end of the facing 22.

As shown in FIG. 7, the dial 18 has a mounting hole 26 for the pointer 19 formed almost at its center, and a numeral 2 for speed indication surrounding this mounting hole 26.
7 and scale 28 are formed, for example, by printing.

As shown in FIG. 8, the dial 18 includes a transparent substrate 29 made of polycarbonate, for example, and a translucent green colored layer 30 formed over the entire surface of the substrate except for the portion corresponding to the yellow colored layer 32. ing. A translucent white layer 31 is formed on the entire surface of this green colored layer 30 and the area where the green colored layer 30 is not present, and furthermore, a yellow colored layer 32 is formed on the area where the green colored layer 30 is not present.

The yellow colored layer 32 is formed only at a position corresponding to the portion of the dial 18 where the characters and scales indicating speeds of 100 km/h or more are provided, and the other portion is made of the translucent white layer 31.

On the surface formed by dividing the translucent white layer 31 and the yellow colored layer 32, there are numbers 27 indicating the speed.
An opaque black colored layer 33 is formed except for portions such as the scale 28 and the like.

Therefore, when there is no transmitted light from the back side of the dial 18, the number 27 and the scale 28 that display speeds of 100 km/h or more without the black colored layer 33 are located on the transparent white colored layer 31. The yellow colored layer 32 displays the numbers in yellow, and the other numbers 27 and the scale 28 are displayed in white by the translucent white colored layer 31 on the translucent green colored layer 30.

When displaying at night or in a dark place such as inside a tunnel, use a switch (not shown) to turn on the lamp 21.
A cap 25 covering the lamp 21, which is lit, is made of a translucent green film. Therefore, in a dark place, the green light from the lamp 21 illuminates the dial 18 from the transparent substrate 29 side, and this illumination light
A layer consisting of a translucent green colored layer 30, a translucent white layer 31, and a yellow colored layer 32, that is, a number 27 indicating the speed without a translucent black colored layer 33.
and passes through the scale 28 portion to reach the surface of the dial 18.

Therefore, in a dark place, the number 27 and symbol 28 indicating the speed on the dial 18 are 100 km/h.
The areas where the above display is performed are displayed in yellow, and the other areas are displayed in green with good contrast with the black colored layer 33. However, as it is, the contrast is too strong and stimulates the driver's vision too much.

Therefore, the light leaking from the gap 23 is used to soften this stimulation. That is, the light leaking from the gap 23 is reflected by the peripheral edge of the endpaper 22 and illuminates the dial 18 from the front side. By irradiating the green light from the front side, the overall contrast of the display of the numbers 27 and scale 28 on the dial plate 18 is softened, resulting in a good display condition for the driver's vision.

However, in the conventional display device described above, the cap 25 is attached to the lamp 21 to make the color tone of the leaked light the same as the light transmitted from the lamp 20 on the dial plate 18, which increases the number of parts. Also, with this method, it is impossible to perfectly match the color tone. Moreover, the production cost will also increase.

Therefore, as shown by dotted lines in FIGS. 6 and 8, the peripheral portion of the dial 18 is extended to the light leaking position, and a green colored layer, which is the same as the green colored layer 30 of the dial 18, is formed on this extended portion. It forms a transparent surface. This causes the light that passes through that part to turn green,
Since the cap 25 of the lamp 21 is not required, the number of parts thereof is reduced, and the extension part 34 can be made integrally and at the same time when the dial plate 18 is produced, which is efficient and reduces the production cost. Furthermore, the transmitted light appearing on the front side of the dial plate and the light leaking from the extension portion 34 have substantially the same color tone, making it possible to display characters with more appropriate color tone and contrast.

However, in this configuration, the light transmitted through the extension is reflected by the lower edge 22b of the endpaper 22, which is normally made of white fabric, and this reflected light is transferred to the dial 18.
It is designed to irradiate the front of the For this reason, a sufficient effect was not achieved due to an imbalance between the direct transmitted light that transmitted through the numerals 27 and scale 28 of the dial 18 and the reflected light that was transmitted through the extended portion and reflected.

Therefore, the present invention aims to provide a display device that achieves harmony between leaked light and transmitted light through a dial plate, and that enables display with optimal color tone and contrast.

[Means and actions for solving the problem]

In order to solve the above-mentioned problems, a display device according to the present invention provides a fixed color layer in at least the display area of a dial whose outer periphery that is not necessary for display is covered with a facing, and irradiates light onto the back surface of the dial. , a part of the irradiated light is leaked from an extension of the dial having a colored layer of the same color as the colored layer to the front of the dial, and the leaked light is irradiated onto the front of the dial. The extension part is bent in the direction of the endpaper with respect to the dial, and the free end thereof is substantially aligned with the opening edge of the endpaper.

In the above configuration, the free end of the extension for leaking light to the front of the dial is bent in the direction of the dial with its free end approximately aligned with the opening edge of the dial. The emitted light is irradiated onto the front of the dial without any reflection. This irradiation light is of the same type as other transmitted light on the dial,
It has become a harmonious place.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

1 to 4 show an embodiment of the display device according to the present invention configured as a vehicle instrument, and in the figures, members equivalent to those of the conventional display device described above with respect to FIGS. 5 to 8 have the same reference numerals. , and detailed explanation thereof will be omitted.

In the figure, the peripheral edge of the dial 18 is extended to form an extended portion 34, and the extended portion 34 is pressed against the dial 18 by, for example, heat pressing.
It is bent approximately at right angles in the direction of 9. The extension part 3
4 is formed of two layers: a transparent substrate 29 and a translucent green colored layer 30, and has the same light leakage layer as the colored layer used to display the numbers 27 and scale 28 used to display speeds below 100 km/h. It is a transparent surface. The dial 18 is positioned so that the free end of the bent extension 34 is substantially aligned with the opening edge 22a of the endpaper 22, which covers the extra portion around the dial excluding the central portion necessary for displaying the dial 18. has been done. In addition, in connection with this, the lamp 21 cap (Fig. 6, 2
5) has been removed.

Therefore, the light from the lamp 21 is reflected by the inner surface of the case 16 and the inner surface of the endpaper 22 and illuminates the dial 18 from the transparent substrate 29 side, and a portion of the light is transmitted through the extension 34 and leaks. do. This leaked light is not reflected at the peripheral edge of the endpaper 22 and directly illuminates the dial 18 from the front side thereof. The color of the irradiated light produced in this way completely matches the color of the numbers 27 and scale 28 used to display speeds below 100 km/h, and moreover, it passes through the numbers 27 and scale 28 of the dial 18. Since the transmitted light is of the same type and matched with the transmitted light, the dial 18 is displayed in a dark place with a color tone and contrast that are extremely comfortable for the driver's vision.

As shown in FIG. 4, the black colored layer 33 is structured to protrude by a predetermined area from the bent extension part 34, so that the direction or amount of light leaking from the extension part 34 can be adjusted to a desired state. Adjustment is also possible.

In the illustrated embodiment, the extension portion 34 extends from the dial 1.
Although it is bent at a substantially right angle with respect to 8, this does not necessarily have to be a right angle, and there may be some inclination.

〔effect〕

As explained above, according to the present invention, the leaked light irradiating the front surface of the dial and the other transmitted light of the dial are both of the same type and in harmony, so that display with optimal color tone and contrast can be achieved. It is possible to provide a display device that performs.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of an embodiment of the display device of the present invention, and FIGS. 2 and 3 are perspective views and sectional views showing the structure of the dial of the embodiment of the display device of the present invention. FIG. 4 is a perspective view showing a part of the detailed structure of the dial of the embodiment of the display device of the present invention, FIG. 5 is a front view showing the structure of a conventional display device, and FIG. 6 is A of FIG.
-A sectional view, FIGS. 7 and 8 are a perspective view and a sectional view showing the configuration of a dial of a conventional display device. 18... Dial board, 22... Endpaper, 22a...
Opening edge, 29...transparent substrate, 30...green colored layer, 34...extension portion.

Claims (1)

[Claims for Utility Model Registration] A fixed color layer is provided in at least the display area of the dial whose outer periphery that is not necessary for display is covered by the endpaper, and the rear surface of the dial is irradiated with light, and a portion of the irradiated light is provided. In the display device, light is leaked from an extension of the dial having a colored layer of the same color as the colored layer to the front of the dial, and the leaked light is irradiated onto the front of the dial, wherein the extension A display device characterized in that a portion is bent in the direction of the endpaper with respect to the dial, and its free end substantially coincides with an opening edge of the endpaper.