JP2002178790A - Indicating instrument for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent false light emitting display or false recognition of a warning display part by light leakage. SOLUTION: This indicating instrument for a vehicle has a facing plate 3 on the surface of a dial 2, and lower housing 1 divided into a plurality of warning lamp storing parts 22 by partitions 23 on the back surface of the character plate 2. The outside of the lower housing 1 is provided with a projection 70 capable of deflecting the dial 2 between it and the facing plate 3 and adhering the dial 2 to the warning lamp storing parts 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle indicating instrument which can effectively prevent erroneous light emission display or erroneous recognition of a warning display part due to light leakage.

[0002]

2. Description of the Related Art A vehicle such as an automobile or a motorcycle is provided with an indicating instrument. Conventionally, as such an indicating instrument, for example, one described in Japanese Patent Application Laid-Open No. 2000-180632 is known.

Such an indicating instrument is basically as shown in FIG. 6 and FIG. 7, and a dial 2 and a return plate are provided on the surface side of a lower housing 1 made of resin such as white which constitutes an instrument main body. 3 (upper housing) and a transparent front cover 4 are attached. Also, the lower housing 1
A circuit board 5 and a back cover 6 for protecting the circuit board 5 are attached to the back side of the board.

The dial 2 has a pointer display section 8 such as a speedometer, an engine tachometer, a fuel gauge, and a water temperature gauge for displaying a display value by rotating a pointer 7, a brake warning light, and an exhaust gas. Warning display section 9 for displaying various warnings such as temperature warning light, oil pressure warning light, and airbag warning light, or indicator display section such as door display light, battery fluid display light, engine oil display light, overdrive off display light, etc. (Hereinafter, the warning display unit 9 includes an indicator display unit). The dial 2 is, as shown in FIGS.
It has a transmissive illumination configuration in which a light-shielding layer 11 is printed on the surface of 0 except characters and scales, and the pointer display unit 8 and the warning display unit 9 are formed by printing on the same light transmissive display plate 10. .

[0005] The circuit board 5 includes an instrument movement 12 such as a cross coil type or a stepping motor type, a light source 13 for illuminating characters, graduations and hands, an incandescent lamp 14 (tungsten lamp) for a warning display section 9 or light emission. A warning lamp 16 such as a diode 15,
Various electronic components 17 for driving the instrument movement 12 and the like are arranged. Instrument movement 12
The pointer shaft 18 protruding from the dial penetrates the dial 2 and the like, and the pointer 7 for displaying the display value of the pointer display unit 8 is fixed to the tip thereof.

In the interior of the lower housing 1, a light guide plate mounting portion 21 for mounting a plate-shaped light guide plate 20 for guiding the light from the light source 13 and the character / memory portion of the dial 2 to the hands 7, and a warning. A partition 23 that divides the display section 9 into each warning lamp storage section 22 is provided.

[0007] Further, as shown in FIGS.
In the position corresponding to the warning lamp storage part 22,
A light translucent smoke layer 24 of gray color is formed on the surface of the light transmissive display panel 10, and a warning design 25 is printed and formed on the back surface of the light transmissive display panel 10 with light-shielding ink.

The warning display section 9 is required to be illuminated with colored light in order to draw attention. Therefore, when the warning lamp 16 is the incandescent lamp 14 that emits white light, as shown in FIG. 8, after forming the light-transmissive colored layer 26 on the back surface of the light-transmissive display panel 10, the warning design 25 is formed using light-shielding ink. Is formed by printing. In recent years, from the viewpoints of maintenance-free (long lamp life due to no lamp replacement due to disconnection, etc.), low power consumption, heat countermeasures, and space saving, the warning lamp 16 has a light emitting diode 15 capable of emitting colored light (monochromatic light). It is changing, but warning lamp 1
In the case where 6 is the light emitting diode 15, as shown in FIG. 9, the warning design 25 is printed and formed directly with the light shielding ink without forming the light transmitting colored layer 26 on the back surface of the light transmitting display panel 10. I have.

Note that the light emitting diode 15 has a variation in luminance, and the blue light emitting diode 15 is completely replaced with the light emitting diode 15 because of its higher price than the red light emitting diode 15. However, at present, the incandescent lamp 14 is partially mixed with the light emitting diode 15. For example, the incandescent lamp 14 is still used in the high beam indicator light (blue light emission) and the fog lamp indicator light (green light emission) in the indicator display unit.

[0010]

However, such a conventional indicating instrument for a vehicle has the following problems.

That is, if a gap 27 is formed between the partition 23 of the warning lamp housing 22 and the dial 2 due to the dimensional accuracy and assembly accuracy of the resin lower housing 1, for example, When the warning lamp 16 is not lit, the illumination light from the light source 13 for character, scale, and pointer illumination leaks from the peripheral edge of the light guide plate 20 and enters the warning lamp housing 22 through the gap 27.

When the incandescent lamp 14 shown in FIG. 8 is used, the light-transmitting colored layer 2 on the back surface of the light-transmitting display panel 10 is used.
Since the light is attenuated by the action of 6, the erroneous light emission display (in a dimly lit state) or erroneous recognition due to light leakage from the light source 13 for character, scale, and pointer illumination is unlikely to occur. Since there is no light-transmitting colored layer 26 on the back surface of the light-transmitting display panel 10, there is a possibility that erroneous light emission display or erroneous recognition due to light leakage may occur. This phenomenon is remarkable when the light guide plate 20 and the warning lamp housing 22 are adjacent to each other.

When a part of the incandescent lamp 14 is mixed with the light-emitting diode 15, the light intensity of the incandescent lamp 14 is higher than that of the light-emitting diode 15. May cause.

A pointer display portion 8 and a warning display portion 9 of each instrument are formed in one dial plate 2 and a return plate 3 formed with a dial opening corresponding to each instrument is formed on the front side thereof. If the plurality of warning display parts 9 are mounted and concentrated and arranged in a matrix, for example, in the dial opening, the dial 2 cannot be pressed over the entire outer periphery of the warning display part 9 group. Light leakage may occur between the warning lamp housings 22.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle indicating instrument which can solve the above-mentioned problems and can effectively prevent erroneous light emission display and erroneous recognition of a warning display part due to light leakage.

[0016]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a dial is provided with a return plate on a surface thereof, and a plurality of warning lamps formed on a back surface of the dial by partition walls. In a vehicle indicating instrument having a lower housing divided into a storage portion, a projection capable of bending a dial between a dial plate and a warning plate storage portion is provided on an outer portion of the lower housing. It is characterized by having been provided.

According to the first aspect of the present invention, the dial is bent by the projections and the return plate and is brought into close contact with the warning lamp housing, so that the warning display unit due to light leakage is provided. Erroneous light emission display and erroneous recognition can be effectively prevented.

According to a second aspect of the present invention, the partition constituting the warning lamp accommodating portion has an intermediate height between the general reference surface of the lower housing and the projection.

According to the second aspect of the present invention, the partition wall constituting the warning lamp housing is formed to have an intermediate height between the general reference surface of the lower housing and the projection. Since the adhesiveness between the bent dial and the warning lamp housing portion is improved, it is possible to further enhance the function of effectively preventing erroneous light emission display and erroneous recognition of the warning display portion due to light leakage.

[0020]

First Embodiment A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 4 show a first embodiment of the present invention. Note that the same or equivalent parts as those in the conventional example are denoted by the same reference numerals and description thereof will be omitted.

FIG. 1 is a front view of a vehicle indicating instrument,
A pointer display section 8 having an engine tachometer 31, a speedometer 32, a fuel gauge 33, a water temperature gauge 34, a liquid crystal display 35, and the like is formed on the dial 2 in this order from the left side in the figure. In addition, the pointer of each instrument is not shown. Below the engine tachometer 31 and the speedometer 32 on the dial 2, indicator indicators such as a door indicator, a battery fluid indicator, an engine oil indicator, an overdrive off indicator, and a brake warning indicator, A warning display section 9 having an exhaust temperature warning light, a hydraulic pressure warning light, an airbag warning light, and the like is formed. The warning display unit 9 (indicator display unit) includes a high beam display lamp 51 that emits blue light using the incandescent lamp 14 and a fog lamp display lamp 52 that emits green light.

FIG. 2 is a front view of the lower housing 1, and a light guide plate mounting portion 21 is formed at a portion corresponding to the speedometer 32 and the engine tachometer 31. Light source attachment holes 60 and 61 and instrument movement arrangement holes 62 and 63 are formed in the periphery and the center of the mounting portion 21, respectively. Movement attachment portions 64 and 65 are formed at positions corresponding to the fuel gauge 33 and the water temperature gauge 34. At a position corresponding to the liquid crystal display 35, a liquid crystal display mounting portion 66 is formed. On the outer peripheral portion of the lower housing 1, a mounting rib 67 for an instrument panel (not shown) and the like are formed.

In the first embodiment, the dial 2 is provided on the outer side of the lower housing 1 between the dial 2 and the return plate 3.
Is bent to provide a projection 70 capable of closely attaching the dial 2 to the warning lamp housing 22.

More specifically, on the surface of the lower housing 1 on which the dial 2 is placed, and on the dial opening 7 of the dial plate 3
The projection 70 is provided on a portion located outside of the projection 70.

The projections 70 are provided at appropriate intervals at a plurality of intervals in accordance with the relationship with the warning lamp storage section 22. Note that, in FIG.
0 is not provided, but this is omitted because the distance of the A dimension between the corresponding warning lamp housings 22 is large and light leakage does not easily occur. The protrusion 70 may be provided on the surface.

The height 72 of the projection 70 is preferably
It is about 1 mm with respect to the general reference plane 73 on which the dial 2 on the upper surface of the lower housing 1 is placed.

Furthermore, the surface of the light guide plate 20 on the dial 2 side is approximately 0.5 mm with respect to the general reference surface 73 of the lower housing 1.
In other words, a step 74 is formed.
Although not shown, the dial 2 and the light guide plate 20 are adhered to each other with a double-sided tape, or are fixed to the instrument movement 12 by screws or the like.

Next, the operation of the first embodiment will be described.

The dial 2 is bent by the projections 70 and the return plate 3 and is brought into close contact with the upper end of the warning lamp housing portion 22, thereby effectively preventing erroneous light emission display and erroneous recognition of the warning display portion 9 due to light leakage. This can be prevented.

That is, when the dial 2 is placed on the surface of the lower housing 1 on which the dial 2 is placed and the dial plate 3 is mounted, the end surface 75 of the inner peripheral wall surface of the dial opening 71 of the dial plate 3 becomes When the dial 2 is pressed, the dial 2 surface located in the dial opening 71 of the dial plate 3 is pressed against the surface of the lower housing 1 on which the dial 2 is placed. The dial plate 2 is tightly bent, and the dial plate 2 is in close contact with the upper end surface of the warning lamp storage unit 22.
In addition, light leakage between the adjacent warning lamp storage sections 22 is prevented.

Further, the surface of the light guide plate 20 on the dial 2 side is approximately 0.5 mm with respect to the general reference surface 73 of the lower housing 1.
By setting it to a lower level, light leakage from the light guide plate 20 can be more effectively prevented.

A plurality of warning display sections 9 are concentrated and formed in a matrix in the plurality of warning lamp storage sections 22 in the dial opening 71 of each instrument, and the entire outer periphery of the warning display section 9 group is formed. Dial 2 over
Can not be suppressed, light leakage between the warning lamp housing portions 22 can be prevented.

[0034]

Second Embodiment FIG. 5 shows a second embodiment of the present invention. The same or equivalent parts as those in the first embodiment will be described with the same reference numerals.

First, the structure will be described. In the second embodiment, the upper end surface 77 (the surface on which the dial plate 2 is placed) of the partition wall 23 constituting the warning lamp housing 22 is described.
Is a height 78 between the general reference surface 73 of the lower housing 1 and the projection 70. For example, the height 78 is about 0.5 mm.

Next, the operation of the second embodiment will be described.

As described above, according to the second embodiment,
The upper surface 77 of the partition 23 constituting the warning lamp housing 22 has a height 78 between the general reference surface 73 of the lower housing 1 and the projection 70, so that the dial 2 and the warning lamp 2 are bent. Since the adhesion to the storage section 22 is improved, it is possible to further enhance the function of effectively preventing erroneous light emission display and erroneous recognition of the warning display section 9 due to light leakage.

The other parts are the same as those of the first embodiment.
, And the same operation and effect can be obtained.

[0039]

As described above, according to the first aspect of the present invention, the dial is bent by the projections and the return plate and is brought into close contact with the warning lamp housing, so that the warning display due to light leakage is provided. It is possible to effectively prevent erroneous light emission display and erroneous recognition of the part.

According to the second aspect of the present invention, the partition wall constituting the warning lamp accommodating portion has a height intermediate between the general reference surface of the lower housing and the projection, whereby the bent dial and the warning lamp are provided. Since the adhesiveness with the storage portion is improved, a function of effectively preventing erroneous light emission display and erroneous recognition of the warning display portion due to light leakage can be enhanced, which can exert a practically useful effect. .

[Brief description of the drawings]

FIG. 1 is a front view of a vehicle indicating instrument according to a first embodiment of the present invention.

FIG. 2 is a front view of a lower housing.

FIG. 3 is a side sectional view of FIG. 1;

FIG. 4 is a partially enlarged view of FIG. 3;

FIG. 5 is a partially enlarged view similar to FIG. 4 according to the second embodiment.

FIG. 6 is a side sectional view of a conventional example.

FIG. 7 is a partially enlarged view of FIG. 6;

8 is a partially enlarged view of FIG. 6 when the warning lamp is an incandescent lamp.

9 is a partially enlarged view of FIG. 6 when the warning lamp is a light emitting diode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower housing 2 Dial 3 Lookout plate 22 Warning lamp accommodation part 23 Partition part 70 Projection 73 General reference plane 78 Height

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3D044 BA22 BD01 BD13 5C096 AA04 BA01 CA02 CA14 CA28 CB01 CC06 CC12 CD02 CD53 CJ02 DA01 FA11 FA17

Claims (2)

[Claims] 1. An indicating instrument for a vehicle having a dial plate on a front surface of a dial, and a lower housing divided on a back surface of the dial by a partition wall into a plurality of warning lamp storage portions, wherein an outer portion of the lower housing is provided. A vehicle indicating instrument, characterized in that the dial is bent between the dial and the dial, and a projection is provided to allow the dial to adhere to the warning lamp housing. 2. The indicating instrument for a vehicle according to claim 1, wherein the partition wall constituting the warning lamp housing portion has a height intermediate between a general reference surface of the lower housing and the projection.