JP2001183184A - Transmitted illumination dial for measuring instrument for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmitted illumination dial, for a measuring instrument for a vehicle, by which a red zone in a warning instruction region executed on the surface of the transmitted illumination dial used for the measuring instrument can be displayed clearly in a red color. SOLUTION: The transmitted illumination dial is formed in such a way that a transmission character color layer in a semitransmission light color is formed on a translucent substrate which constitutes the transmitted illumination dial for the vehicle, that a red color layer is formed, by a red painting operation displaying the red zone, in the prescribed position on the surface of the transmission character layer and that a light shielding layer is formed on the surface of the red color layer shaped in the red zone and on the surface of the transmission character color layer excluding the display part of a character, a graduation or the like. A pink color-based fluorecent paint layer is formed in a position corresponding to the rear of the red color layer formed on the dial for the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dial of a meter installed in, for example, an automobile, and particularly to a red zone of a caution indication area provided on a surface of a transmitted illumination dial used for the meter. The present invention relates to a dial for a vehicle instrument which can be clearly displayed by using a dial.

[0002]

2. Description of the Related Art For example, a general configuration of an analog type vehicle instrument used in an automobile is shown in FIGS. 4 and 5, and a pointer 2 rotated by a movement 1 (mechanical body);
It has a transillumination dial 3 for displaying a rotation instruction value of the pointer 2, and the pointer 2 in a dark place such as at night turns on the LED 5 arranged on the circuit board 4 to turn the LED 5 to the L position.
The light emitted from the ED 5 is received through the light guide plate 6 and is displayed by light emission.
5 is superimposed on the surface of the light guide plate 6 which emits surface light in response to light from the display 5, and displays characters, scales, etc. applied to the transillumination dial 6 at the luminance of the light guide plate 6 which emits surface light. The portion 7 is illuminated with transmitted light.

The structure of the conventional transillumination dial will be described in detail with reference to FIG. 6. The transillumination dial 3 includes a transparent substrate 8 made of a transparent polycarbonate (PC) resin. A transmissive character color layer 9 made of white ink having light transmissivity is formed on the whole, and the display portion 7 such as the character / scale is formed on the surface of the transmissive character color layer 9.
The black light-shielding layer 10 is formed except for the light-transmitting portion obtained by shaping the pattern.

[0004] The form of the display section 7 such as characters and scales formed on the surface of the transillumination dial 3 indicates scales and numerical values for displaying the number of revolutions of the engine. From "0" to "11.5" is an allowable instruction area, and the numerical value "11.5" or more is an attention instruction area. In this attention instruction area, as shown in FIG. The red zone 11 is provided by a red ink having light transmittance without applying the layer 10,
When the pointer 2 points to the caution instruction area that is the red zone 11, the red zone 11 has a function of calling the driver to pay attention.

[0005]

However, when the amber (orange) LED 5 is used as a light source for transmitting and illuminating the above-mentioned conventional transmitted illumination dial 3, the LED 5 has a single wavelength. Because of its LED5
Is not transmitted and illuminated in crimson red even if the light is transmitted through the red zone 11, the transmitted light color of the red zone 11 is illuminated and transmitted in amber, so that the red transparent ink Although the red zone 11 is formed by using the LED, since the light source of the LED has a single wavelength, the red zone 11 is transmitted and illuminated only in amber, and red transmission display is impossible.

For this reason, in the daytime, the red zone 1
Even when 1 is reflected and displayed in crimson by reflected light, the red zone 11 is not displayed in crimson when the red zone 11 is transmitted and illuminated with the transmitted light by the LED at night or the like. Attention instruction was lacking in effectiveness.

If a white light emitting tungsten bulb and a white light emitting LED are used as means for transmitting and illuminating the red zone 11 in crimson color, the red zone 1 is used.
1 can transmit light in red, but when a tungsten bulb is used, a large space for installing the tungsten bulb must be secured, so that the overall shape of the vehicle instrument is increased. In addition, since white light emitting LEDs are very expensive, it is difficult to use them for vehicle instruments in terms of manufacturing economy.

As another means, a light source for transmitting and illuminating the display section 7 for displaying characters and scales and the red zone 11 is a separate light source, that is, the display section 7 for displaying characters and graduations is used for transmitting illumination. It is conceivable that the LED is amber (orange) and the LED used for transmitting and illuminating the red zone 11 is a red one. A light-shielding wall is required to prevent light emission from mixing with the light emission, and this has an adverse effect on the space and the design of the dial.

The present invention has been made by focusing on each of the problems (defects) of the prior art, and a display portion for characters and scales is provided with an amber color transmissive illumination by using an amber (orange) LED. It is another object of the present invention to provide a vehicle dial that can perform transillumination in red zone in the red zone.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, a transmissive character color layer of a semi-transmissive light color is formed on a light transmissive substrate constituting a transmissive illumination dial for a vehicle. Then, a red layer is formed on a red paint for displaying a red zone at a predetermined position on the surface of the transparent character color layer, and the red character molded in the red zone and the transparent character color except for a display portion such as a character or a scale. In a transmitted illumination dial having a light-shielding layer formed on the surface of a layer, the vehicle transmitted illumination has a pink fluorescent paint layer formed at a position corresponding to a back surface of a red layer formed on the vehicle dial. It is characterized by being a dial.

According to the transmitted illuminating dial of the present invention, the transmitted light from the amber light emitting LED transmitted from the back side to the front side of the dial is next to the pink fluorescent paint layer and the red layer. , The red light is transmitted and illuminated in crimson by the synergistic action of the transmitted light transmitted through the pink fluorescent paint layer and the transmitted light transmitted through the red layer.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to FIGS.

Numeral 21 denotes a transmitted light dial plate for a vehicle having light transmissivity according to the present embodiment, and a value "0" which is a display form of a display unit 22 such as a character and a scale on the transmitted light dial plate 21 for a vehicle. The display pattern in which the allowable instruction area from "" to "11.5" and the caution instruction area from the value "11.5" to "13.5" are set to the red zone 23 is the same as that of the conventional example.

The structure of the vehicle dial 21 having such a display pattern (hereinafter simply referred to as a dial) will be described with reference to FIG.
A transparent character color layer 25 is formed on the entire surface (upper surface) of the substrate by using a white ink having a light transmitting property (PC ink 8000 series manufactured by Jujo Chemical Co., Ltd.) using, for example, a printing unit.

Next, a red ink having light transmittance (PC ink 8000 manufactured by Jujo Chemical Co., Ltd.) is provided on the surface of the transmission character color layer 25 where the red zone 23 is to be displayed.
The red layer 26 is formed using, for example, a printing method. Note that the red layer 26 is not applied to the allowable designation area and the character portion.

Next, the transmission character color layer 25 and the red layer 26
Except for the red layer 26 shaped in the red zone 23 and the display portion 22 such as characters and scales, for example, a black ink (PC ink 8 manufactured by Jujo Chemical Co., Ltd.)
000 series) is formed by, for example, a printing unit.

Finally, a fluorescent pink ink having light transmissivity (PC ink 8000 manufactured by Jujo Chemical Co., Ltd.) is provided on the back surface (lower surface) of the substrate 24 at a portion corresponding to the red layer 26.
(1 series), the fluorescent pink layer 28 is formed by, for example, printing means to complete the transmitted illumination dial plate 21 for a vehicle.

Next, the operation of the vehicle transmitted illumination dial 21 will be described. An LED 29 (for example, LYE676 manufactured by Infineon Technology, peak wavelength: 594 nm, dominant wavelength: 590 nm) that emits an amber color is used as a light source for transmitting and illuminating the vehicle transmitted illumination dial 21. Use it on the back side.

When the amber LED 29 is turned on on the back side of the vehicular transmitted illumination dial 21, the display 22 provided on the dial 21 is transmitted and illuminated in amber.

A part of the amber light emitted from the amber LED 29 passes through the inside of the fluorescent pink layer 28, so that the transmitted light is converted to a reddish color. Is transmitted through the transmission character color layer 25 and the red layer 26, the red zone 23 provided on the surface of the dial 21 is transmitted and illuminated in crimson.

In this way, according to the transmitted illumination dial 21 for a vehicle, a fluorescent pink layer 28 is provided at a position behind the red layer 26 forming the red zone 23, and the fluorescent pink layer 28 and the red layer 26 are formed on the fluorescent pink layer 28. By transmitting the amber LED emission color light, the surface of the red layer 26 can be transmitted and illuminated in a crimson color, whereby the utility of the red zone 23 is enhanced. In addition, the amber-colored LED is one type of LED, and the display section 22 can be illuminated in amber and the red zone 23 can be illuminated in crimson, so that the economical efficiency of the light source used is greatly improved.

In the embodiment shown in FIG. 3, the fluorescent pink layer 28 is formed between the transmission character color layer 25 and the red layer 26. Even in the case where the fluorescent pink layer 28 is provided in this manner, the surface of the red layer 26 can be transmitted and illuminated in crimson by using an LED that emits amber as in the above-described embodiment. In FIGS. 2, 3 and 7, there is a gap between the transmissive character color layer and the light-shielding layer even though there is no red layer. This is schematically shown in the drawing, and the portion where the red layer or the like is not formed is actually printed in close contact.

[0023]

As described above, according to the transmitted illumination dial of the instrument for a vehicle of the present invention, the surface of the transmitted illumination dial is applied to the surface of the transmitted illumination dial using the amber light emitted from the LED emitted in amber. The surface of the red layer can be displayed in reddish transmitted light, which greatly improves the economics of the light source used, and allows the use of small LEDs, which also helps to reduce the size of instrumentation for vehicles. This has the operational effect of:

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a transmitted illumination dial according to the present invention.

FIG. 2 is an enlarged sectional explanatory view taken along line AA in FIG. 1;

FIG. 3 is an enlarged sectional explanatory view showing another embodiment of the transmitted illumination dial according to the present invention.

FIG. 4 is an explanatory view of a vehicular instrument using the transmitted illumination dial according to the present invention.

FIG. 5 is a front view showing a conventional transmitted illumination dial.

FIG. 6 is a sectional view taken along line BB in FIG. 5;

FIG. 7 is a sectional view taken along line CC in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 ... Transmission illumination character board 22 ... Display part 23 ... Red zone 24 ... Polycarbonate sheet 25 ... Transmission character color layer 26 ... Red layer 27 ... Light shielding layer 28 ... Fluorescent pink color layer 29 ... Amber LED

Claims (1)

[Claims] 1. A red paint for forming a transmissive character color layer of semi-transmissive light color on a light transmissive substrate constituting a transillumination dial for a vehicle, and displaying a red zone at a predetermined position on the surface of the transmissive character color layer. A transmission layer having a red layer formed thereon and a light-shielding layer formed on a surface of the transmission character color layer except for a display layer such as a red layer and characters and scales formed in the red zone. A transmitted illumination dial plate for a vehicle, wherein a pink fluorescent paint layer is formed at a position corresponding to a back surface of a red layer formed on the dial plate.