JP2933399B2 - Blackface instrument guidelines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting guide used for a black face instrument installed in an automobile.

[0002]

2. Description of the Related Art A known example of a conventional black face instrument for a vehicle is shown in FIG. That is, reference numeral 1 denotes an instrument. Inside the instrument 1, an instrument machine body 2, a pointer 5 attached to a pointer shaft 3 of the instrument machine body 2, and a fluorescent lamp 4 illuminated and displayed, a transmitted light A support 8 having a dial 6 of a type and a fluorescent lamp 7 for illuminating the dial 6 with transmitted light
In addition, a translucent front cover 9 that looks black in reflected light and has a transmittance of, for example, 30 to 70% is attached in front of the indicator 8. 1
An inverter 0 turns on the fluorescent tube 4 and the fluorescent lamp 7. And In the the black face meter, when the fluorescent tube 4 and the fluorescent lamp 7 is not lighted, namely, when IGNITION SWITCH is off, because there is no transmitted light, translucent front cover 9
Surface is black (smoke-like) due to external reflected light, and nothing is visible. However, when the ignition switch is turned on and the fluorescent tube 4 and the fluorescent lamp 7 are turned on, the hands 5 emit light, and when the dial 6 is illuminated by transmission, the illumination is transmitted through the front cover 9 and its indicator is transmitted. 8 can be visually observed.

In the black face instrument having such a structure, in order to prevent the front cover 9 from reflecting external light to the indicator 8, use of a front cover having a dark smoke tone, that is, a light transmittance is suppressed. However, since the front cover 9 is semi-transmissive, for example, when the outer surface of the front cover 9 is directly irradiated with high-brightness direct sunlight from obliquely above, the direct light is applied to the front cover. Since the reflected light of the indicator is transmitted through 9 and is strong, the function as a black face instrument is impaired. Therefore, in order to enhance this role, especially in Guideline 5, high brightness,
The expensive fluorescent tube 4 must be used.

[0004]

As described above, the use of the fluorescent tube 4 with high brightness in the pointer 5 not only increases the cost but also increases the size and shape There is a problem that the mechanical balance is deteriorated and the width of the pointer 5 is widened to deteriorate the pointing property.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem. In particular, in a light emitting guide used in a black-face instrument, firstly, the use of a fluorescent tube is omitted and economy is improved. A second object of the present invention is to provide a black face instrument pointer capable of improving the operation characteristics and, secondly, reducing the light emission width of the pointer to improve the instruction characteristic of the indicated value and the visibility.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in FIGS.

In FIG. 2, reference numeral 11 denotes an instrument, and an indicator 12 is provided in the instrument 11. The indicator 12 is composed of an indicator mechanical body 13, an instrument mechanical body 13, a pointer 15 attached to a pointer shaft 14, a transmitted light dial 16,
A light bulb 17 for causing the dial 16 and the pointer 15 to emit light and a light guide 1 for guiding the light to the pointer 15
8. Reference numeral 19 denotes a lower housing for accommodating the above-mentioned indicator, and 20 denotes an upper housing mounted in front of the lower housing 19, the inner peripheral surface of the upper housing and the display characters on the transmitted light type dial 16. The other parts are provided with a completely matte black paint having a reflectance of 1% or less, for example. The joint edge of the upper housing 20 with the lower housing 19 has a round shape (R) in order to hide (blur) the shading of the joint edge.
Is formed. Therefore, at the time of a black face, the entire instrument section becomes a substantially uniform black face surface. Reference numeral 21 denotes a front cover which is attached to a front opening of the upper housing 20, and the front cover 21 is semi-transmissive with a transmittance of about 50%.

Next, the structure of the pointer 15 will be described with reference to FIGS. The pointer 15 emits light in response to light from the light bulb, and includes a pointer body 22 directly fixed to the pointer shaft 14 and a cover 23 attached to the surface of the pointer body 22. However, the cover 23 has an elongated slit 24 extending in the direction of the pointer of the pointer body 22. The surface of the cover 23, except for the slits 24, is coated with a black paint equivalent to the completely matte material applied to the inner peripheral surface of the upper housing and the transmitted light type dial plate 16. is there. 2
Reference numeral 5 denotes a light reflecting surface for guiding light from the bulb 17 toward the tip of the pointer.

As described above, the pointer 15 in this embodiment is
Is a narrow slit 2 extending in the longitudinal direction of the pointer on the surface of the pointer main body 22 which emits light upon receiving light from the bulb 17.
Since the light-shielding cover 23 on which the cover 4 is formed is attached, the hands 15
Is a part of the slit 24, and the pointer 15 emits light corresponding to the slit shape of the slit 24.

Therefore, by making the slit shape narrow, the light emission width of the pointer can be restricted to a narrow width, and the indication characteristic and the readability of the indicated value by the light emission pointer can be improved. Further, since the pointer is completed with a simple structure in which the cover 23 having the slit 24 formed thereon is attached to the conventional light emitting pointer main body 22, productivity and economy are enhanced. Furthermore, since the surface of the cover 23 is matted with the same color and the same material as the completely matted around and behind the hands 15, the black face effect is large when the hands of the hands are not emitting light. .

[0011]

As described above, according to the present invention, the front of the instrument case is provided.
With a semi-transparent dark cover, and the ignition
The instrument is displayed only when the switch is closed.
Stipe of instruments, a guide body 22 that is a light emitting display by the light bulb 17 which is arranged on the back side of the transmissive illumination type meter instrument dial 16, a slit 2 extending in the longitudinal direction of the finger needle body 22
And a cover attached to the surface of the pointer main body 22 so that the slit 24 is positioned on the longitudinal surface of the pointer main body 22. The cover has on its surface a text behind the pointer.
Because it is a guideline of black face instruments with matte black paint equivalent to matte black paint on the dial,
According to this, by making the slit shape narrow, the light emission width of the pointer can be restricted to a narrow width, and the indication characteristic and the recognition property of the indicated value by the light emission pointer can be improved.
Further, since the pointer is completed with a simple structure in which the cover 23 having the slit 24 formed thereon is attached to the conventional light emitting pointer main body 22, productivity and economy are enhanced.
Furthermore, since the surface of the cover 23 is matted with the same color and the same material as the completely matted around and behind the hands 15, the black face effect is large when the hands of the hands are not emitting light. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a conventional blackface instrument.

FIG. 2 is an explanatory diagram of a black face instrument according to an embodiment of the present invention.

FIG. 3 is a front view showing the pointer of the embodiment.

FIG. 4 is a side view showing the pointer of the embodiment.

FIG. 5 is a plan view showing the pointer of the embodiment.

[Explanation of symbols]

11: Instrument 12: Indicator 13: Indicator machine body 14: Pointer shaft 15: Pointer 16: Transmitted light dial 17: Light bulb 18: Light guide 19: Lower housing 20: Upper housing 21: Front cover 22: Pointer Body 23: Cover 24: Slit 25: Reflective surface

Claims (1)

(57) [Claims] 1. A dark semi-transparent cover is provided on the front of the instrument case.
Mounted, instrument only when ignition switch is closed
Display of black face type of instrument to be made, the bulb was placed behind a translucent illuminated gauge instrument dial (16) (1
7) a pointer body (22) that is displayed by light emission by the light of (7),
A slit (2) extending in the longitudinal direction of the pointer body (22)
4) and a cover attached to the surface of the pointer body (22) such that the slit (24) is located on the longitudinal surface of the pointer body (22).
Black, characterized in that subjected to matte black coating the same matte black coating that is applied to the dial behind the pointer
Face instrument pointer.