JPH11230789A - Instrument for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a liquid crystal display to a visual field angle with optimum contrast without limiting appearance design, space inside a meter, or the like by improving the setting angle of a liquid crystal holder. SOLUTION: A liquid crystal display part L consists of a square-cylindrical liquid crystal holder 10 and a liquid crystal display 11 being mounted to a mounting part 13 at the front part of the liquid crystal holder 10. The liquid crystal holder 10 inclines a rear end part 15 at a specific angle A for the mounting part 13 so that the dimensions of a lower side part 10b become smaller than those of an upper side part 10a, and the rear end part 15 is allowed to adhere to a wiring board 4 for mounting, thus setting the liquid crystal display 11 to a visual field angle C with optimum contrast.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device using a liquid crystal display, and more particularly to an improvement in a structure for holding a liquid crystal display (LCD) in a vehicle instrument.

[0002]

2. Description of the Related Art In an instrument for a car such as a combination meter, when a liquid crystal display is used as a display below the instrument meter (for example, an odrip meter), as shown in FIG. Mounted parallel to the board.

[0003] That is, in FIG.
Numeral 0 denotes a case in which a meter meter M is provided on the upper part of the meter case 1 and a liquid crystal display unit L is provided on the lower part thereof. A facing 2 is attached to a front part of the meter case 1, a wiring board 4 is attached to a rear part of the meter case 1, and a back case 5 is attached to the back side of the wiring board 4.

The dial 6 of the meter M is attached to the front of the meter case 1. The dial 6 is attached so as to be parallel to the wiring board 4. The internal unit 7 of the meter meter M is mounted on the wiring board 4, and the pointer shaft 8 of the internal unit 7 is mounted with a pointer 9 that rotates at the front of the dial 6.

The liquid crystal display section L includes a liquid crystal holder 10, a liquid crystal display 11, and a backlight 12. The liquid crystal holder 10 has a rectangular tube shape, and the liquid crystal display 11 is fitted into a front mounting portion 13, and the periphery of the front surface of the liquid crystal display 11 is pressed by a vessel 14.
The mating portion 2a of the facing 2 is brought into contact with the front of the vessel 14.

A similar technique is disclosed in Japanese Utility Model Laid-Open Publication No. 62-14907.
No. 9 discloses this.

[0007]

The meter case 1 is mounted on the body of the automobile upward, that is, the back case 5 is attached at an angle B with respect to the vertical plane H. The field of view 16 is on an extension of a line perpendicular to the dial 6 (this is the most visible state of the dial 6). By the way, it is known that the liquid crystal display 11 generally has the highest contrast when the viewing angle (the angle of the line of sight with respect to a line perpendicular to the liquid crystal display 11) is inclined by 5 to 10 degrees, and is most easily viewed.

In the conventional automotive instrument, since the liquid crystal display 11 is parallel to the dial 6 of the instrument meter M, the field of view 17 of the liquid crystal display 11 is also substantially orthogonal to the liquid crystal display 11. Therefore, there is a problem that the viewing angle of the liquid crystal display 11 can hardly be obtained, and the visibility of the liquid crystal display 11 is not good due to reflection of external light.

In order to set the viewing angle to 5 to 10 degrees, the liquid crystal display 11 may be inclined by an angle α with respect to the direction of the dial 6 of the meter meter M as shown in FIG. Inclining the mounting portion 13 has a problem that the draft of the mold cannot be taken and the moldability is poor.

As shown in FIG. 4, when the distance between the meter M and the eye is D, and the distance between the center of the meter M and the liquid crystal display L is d, the field of view of the liquid crystal display L Corner C
Is determined by the following equation.

C = sin ⁻¹ (d / D) Therefore, for example, the distance D is set to 500 mm and the distance d is set to 5
When the distance is 0 mm, the viewing angle C is 5 ° 44 ′ according to the above equation, and an optimum contrast can be obtained without tilting the liquid crystal display 11.

However, in this case, it is necessary to keep the distance d at least 50 mm, so that there is a problem that the external design and the space inside the meter are extremely limited.

The present invention has been made in view of the above points. By improving the set angle of the liquid crystal holder, the liquid crystal display can be realized without limiting the external design and the space inside the meter. It is an object of the present invention to provide an automotive meter that can be set to a viewing angle with an optimal contrast and that improves the visibility of the meter and the liquid crystal display.

[0014]

According to a first aspect of the present invention, a meter case is provided with a meter meter and a liquid crystal display portion provided below the meter case, and a wiring is provided behind the meter case. An automotive instrument provided with a substrate, wherein the liquid crystal display section includes a rectangular cylindrical liquid crystal holder and a liquid crystal display attached to a mounting portion at a front portion of the liquid crystal holder, and the liquid crystal holder has a lower side. The rear end portion is inclined at a predetermined angle with respect to the mounting portion so that the dimension of the portion is smaller than the upper side portion, and the rear end portion is attached in close contact with the wiring board. is there.

According to the first aspect of the present invention, the liquid crystal display can be inclined at a predetermined angle with respect to the instrument by providing an inclined portion at the rear end of the liquid crystal holder for holding the liquid crystal display. The viewing angle of the liquid crystal display can be optimally set without changing the mounting portion of the holder, so that the liquid crystal display can be easily viewed with a large contrast.

According to a second aspect of the present invention, there is provided the instrument for an automobile according to the first aspect, wherein the meter case is attached to an automobile body by tilting the meter case upward at a predetermined angle, and the field of view of the instrument meter is indicated by the character. When set in a direction perpendicular to the plate, the viewing angle of the liquid crystal display is set to 5 to 10 degrees.

For this reason, according to the second aspect of the present invention, the dial of the instrument meter and the liquid crystal display are set at different angles, and the liquid crystal display has a viewing angle with the highest contrast even when external light is reflected. Is set.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. 2 and 3 are denoted by the same reference numerals.

In FIG. 1, a facing 2 is attached to the front of the meter case 1, and a front glass 3 is attached to the front of the facing 2. A wiring board 4 is attached to the rear of the meter case 1, and a back case 5 is attached to the back side of the wiring board 4 so as to be parallel to the wiring board 4.

On the upper part of the meter case 1, a meter M
However, a liquid crystal display unit L is provided below each of them.

The dial 6 of the meter M is attached to the front of the meter case 1. The dial 6 is attached so as to be parallel to the wiring board 4. The inner unit 7 of the meter meter M is mounted on the wiring board 4, and the pointer shaft 8 of the inner unit 7 is mounted with a pointer 9 that rotates at the front of the dial 6.

The liquid crystal display section L includes a liquid crystal holder 10, a liquid crystal display 11, and a backlight 12. The liquid crystal holder 10 has a rectangular cylindrical shape, and a liquid crystal display 11 is fitted into a stepped mounting portion 13 formed at a front portion thereof.
I am holding it with 4. The mating portion 2a of the facing 2 is brought into contact with the front of the vessel 14.

The liquid crystal holder 10 has a structure in which the upper edge 10a is formed longer than the lower edge 10b so that the rear end 15 is inclined rearward. Accordingly, when the rear end portion 15 is attached to the wiring board 4 in close contact, the liquid crystal display 11 is inclined forward by the angle A with respect to the wiring board 4 and the back case 5. In addition, the matching portion 2a of the dial 2 is also formed so as to be inclined so that the upper side is shorter, so that the matching portion 2a is in close contact with the front surfaces of the liquid crystal display 11 and the vessel 14.

The meter case 1 is attached to the vehicle body 1 of the automobile upward, that is, the back case 5, the wiring board 4 and the dial 6 are inclined at an angle B with respect to the vertical plane H. Since the rear end portion 15 of the liquid crystal holder 10 is inclined by an angle A (= B) in a direction opposite to the angle B with respect to the front surface,
The liquid crystal display 11 will be arranged vertically.

Assuming that the field of view 16 of the instrument meter M is an extension of a line perpendicular to the dial 6, the field of view 17 of the liquid crystal display L (intersects the field of view 16 at the eye) is:
It is inclined by an angle (viewing angle) C with respect to a line perpendicular to the liquid crystal display 11. When the viewing angle C is 5 to 10 degrees, the contrast of the liquid crystal display 11 is maximized even when external light is reflected. Since the viewing angle C is determined by the angle A, assuming that the position of the eye is fixed, the optimum viewing angle C can be obtained by the inclination angle of the rear end portion 15 of the liquid crystal holder 10.

As described above, the instrument for a vehicle according to the present embodiment has a liquid crystal holder 10 for holding a liquid crystal display 11.
The liquid crystal display 11 is inclined at a predetermined angle with respect to the gauge 20 by providing an inclined portion at an angle A at the rear end portion 15 of the liquid crystal display 11. By setting C optimally, it is possible to make the instrument easy to see with a large contrast.

Also, since the automotive meter according to the present embodiment can obtain the optimum contrast while the distance between the meter M and the liquid crystal display section L is set in the same manner as in the prior art, the external appearance is improved. There is no restriction on the above design or the space inside the meter.

Furthermore, since the mounting portion 13 of the liquid crystal holder 10 does not need to be changed, good moldability of the liquid crystal holder 10 can be maintained.

[0029]

As described above in detail, according to the first aspect of the present invention, the liquid crystal display is provided at a predetermined angle with respect to the instrument by providing an inclined portion at the rear end of the liquid crystal holder for holding the liquid crystal display. The liquid crystal holder can be tilted, so that the mounting portion of the liquid crystal holder is not changed, so that the good formability of the liquid crystal holder can be maintained, and the viewing angle of the liquid crystal display is optimally set so that it is easy to see with a large contrast. It can be a liquid crystal display. Also, at this time, the optimum contrast can be obtained with the distance between the meter and the liquid crystal display set as before, which imposes restrictions on the external design and the space inside the meter. I can't do anything.

According to the second aspect of the present invention, the viewing angle of the liquid crystal display is set at 5 to 10 degrees. When the liquid crystal display is set at a different angle and the meter for the instrument is set to be easy to see, the liquid crystal display is also set to the viewing angle with the largest contrast, and both are the automotive instruments with optimal visibility. be able to.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a main part showing an embodiment of an automotive instrument of the present invention.

FIG. 2 is a vertical sectional side view of a main part of a conventional automotive instrument.

FIG. 3 is an explanatory view showing a state in which a liquid crystal display is tilted in the automotive meter of FIG. 2;

FIG. 4 is an explanatory diagram of a viewing angle at which an optimum contrast is obtained in the automotive instrument of FIG. 2;

[Description of Signs] 1 Meter case 4 Wiring board 6 Dial 10 Liquid crystal holder 10a Upper side 10b Lower side 11 Liquid crystal display 13 Mounting part 15 Rear end M Meter L Liquid crystal display A Angle C Viewing angle

Claims (2)

[Claims] 1. An automotive instrument in which a meter case is provided in a meter case and a liquid crystal display section is provided below the meter case, and a wiring board is provided on a rear side of the meter case, wherein the liquid crystal display section has a corner. The liquid crystal holder comprises a cylindrical liquid crystal holder and a liquid crystal display mounted on a front mounting portion of the liquid crystal holder, and the liquid crystal holder has a rear end portion having the lower end portion smaller than the upper side portion. An automotive instrument characterized by being inclined at a predetermined angle with respect to the wiring board, and attached such that the rear end thereof is in close contact with the wiring board. 2. The liquid crystal display has a viewing angle of 5 to 10 when the meter case is tilted upward at a predetermined angle and mounted on an automobile body, and the field of view of the meter meter is set in a direction orthogonal to the dial. The automotive instrument according to claim 1, wherein the instrument is set at a time.