JPH0790728B2 - Vehicle display - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a so-called head-up display device for displaying information necessary for traveling of a vehicle as an optical virtual image in a front visual field of a driver, and particularly, improvement of traveling stability. The present invention relates to a display device for a vehicle that can contribute to.

[Prior art and its problems]

Generally, an instrument panel of a vehicle is provided with various instruments such as a speedometer, a tachometer, a fuel level gauge, a water temperature gauge, etc. in order to call the driver's attention and ensure traveling safety. . In such a vehicle, the driver drives while concentrating on the nerves in front of the vehicle. For example, when looking at the speedometer, the driver must read the traveling speed at a predetermined time from the front view. However, it is not preferable to remove the line of sight from the front even temporarily.

For this reason, recently, a head-up display device that reflects information necessary for traveling (hereinafter referred to as "vehicle information") on a semi-transparent mirror-processed portion of a windshield of a vehicle and displays it as an optical virtual image in the front visual field. Has been proposed (JP-A-54-182540).

The structure of this type of head-up display device 101 will be described with reference to FIG. Here, 103 is a windshield of the vehicle, and 105 is an instrument panel. A display body 107 configured by, for example, a liquid crystal panel or the like for displaying vehicle information is attached inside the instrument panel 105, and the convex lens 1 faces the display body 107.
09 is provided for enlarging and projecting vehicle information as light from the display body 107. Reflecting mirror 111 is this convex lens 1
It is installed at a certain angle to the optical axis of 09.

This reflecting mirror 111 is for irradiating the enlarged vehicle information to the semi-transparent region 103-1 of the windshield 103 through the opening 113 formed in the upper portion of the instrument panel 105. Is. Here, E is the driver's eye point.

In the head-up display device 101, the vehicle information as light output from the display body 107 is a convex lens 109.
After being magnified by, the reflected vehicle information is reflected by the reflection mirror 111, and the vehicle information as the reflected light is further reflected by the area 103-1. For example, 10 to 20 m) is seen in front.

By the way, in this type of device, since the opening 113 is formed in the upper part of the instrument panel 105, foreign matters such as dust and coins enter the instrument panel 105, or even by hand. Touching the convex lens 109 and the reflection mirror 111 may lead to a situation in which the optical system is contaminated or damaged.

Therefore, a countermeasure has been proposed in which a transparent resin plate 115 is provided in the opening 113 (Japanese Patent Laid-Open No. 57-182541).

However, in this measure, damage to the optical system can be prevented, but on the other hand, a part of the light rays shown by the solid line in the figure such as the sun and the streetlight incident through the windshield 103 are on the surface of the transparent resin plate 115. There is a possibility that the vehicle may be dazzled by the reflection and hinder the visibility of the vehicle information from the front view and the head-up display.

[Object of the Invention]

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular display device that ensures the recognition of vehicle information by the driver's forward field of view and the head-up display.

[Outline of Invention]

In order to achieve the above-mentioned object, the present invention provides vehicle information converted to light by an optical system having a transparent panel member on the upper part of the instrument panel installed in the instrument panel, through the transparent panel member. In a head-up display type display device that diffracts light near the windshield and projects it outside the vehicle compartment, external light incident from outside the vehicle compartment through the windshield is reflected by the transparent panel member and reaches the eyes of the driver. The gist is to have a preventive means for preventing.

Example of Invention

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic sectional view of a vehicle display device 1 according to a first embodiment of the present invention. The same members as those of the vehicle display device according to the conventional example are denoted by the same position numbers.

In order to prevent the driver from being dazzled by the incident light from the outside of the vehicle through the windshield 103, the transparent resin plate 115 constituting the transparent panel member is used in the vehicle display device 1 .
It is characterized in that the transparent resin plate 115 is provided at substantially the same angle as the line of sight of the driver who gazes at the front field of view relatively close to the vehicle, and the driver cannot directly see the transparent resin plate 115.

First, the configuration will be described.

The optical system of the display pair 107 and the convex lens 109 is housed in the case 5 in an arrangement relationship substantially similar to the conventional example. Reflective mirror 11
Reference numeral 1 is arranged at an appropriate angle with respect to the optical axis of the convex lens 109 in the region 103-1 of the windshield 103 so as to reflect the vehicle information. Instrument panel pad 3
(Hereinafter referred to as "instrument pad") is case 5, display board 10
7, the convex lens 109 and the reflection mirror 111 are stored. A transparent resin plate 115 is provided in an opening formed in the upper portion of the instrument pad 3, and the transparent resin plate 115 is set at an angle so that it cannot be seen directly from the driver's eye point E.

Next, the operation of the first embodiment according to the present invention will be described.

The vehicle information as the light displayed on the display body 107, which is indicated by the alternate long and short dash line in the figure, is reflected by the reflection mirror 111 enlarged by the convex lens 109. The vehicle information as the light reflected by the reflection mirror 111 is transmitted through the transparent resin plate 115, further reflected by the area 103-1 and projected as a virtual image 107 'on the front visual field of the driver.

In this case, the incident light from outside the vehicle shown by the solid line in the figure is directly reflected from the driver's eye point E even if a part of the incident light is reflected by the transparent resin plate 115. Since it is not visible, the driver is not dazzled by the incident light reflected by the transparent resin plate 115.

Note that only the region 103-1 may be formed separately from the windshield and provided in the vehicle compartment.

FIG. 2 shows a schematic sectional view of a vehicle display device 7 according to a second embodiment of the present invention. The display 107, the convex lens 109, the case 5, the reflection mirror 111, the windshield 103, and the driver's eye point E are arranged in substantially the same manner as in the case of the vehicle display device 1 shown in FIG. The explanation is omitted.

This vehicle display device 7 is characterized in that a member adjacent to the windshield 3 side of an instrument pad 9 made of the same material as the instrument pad 3 is formed as a protrusion 9-1. . The transparent resin plate 115 provided on the instrument pad 9 is arranged horizontally.
As an operation according to the second embodiment, the transmission route of vehicle information as light is substantially the same as that of the first embodiment, but the projection 9 is formed before the incident light from the outside of the vehicle is reflected on the transparent resin plate 115. -1
It is different from the operation of the first embodiment in that it is blocked by.

That is, by providing this projection 9-1 it is possible to block the incident light from outside the vehicle shown by the solid line in the figure before it is reflected by the transparent resin plate 115, so that halation development is prevented. . Moreover, it is a matter of course that the dazzling of driving can be prevented.

FIG. 3 shows a schematic sectional view of a vehicle display device 11 according to a third embodiment of the present invention. Vehicle display device 11
The arrangement configuration of the display body 107, the convex lens 109, the reflection mirror 111, and the driver's eye point E is substantially the same as that of the vehicular display device 1 shown in FIG. 1, and therefore its explanation is omitted here. This vehicle display device 11 is characterized in that a member facing the eye point E of the driver of the instrument pad 13 using the same material as the instrument pad 3 is formed as the protrusion 13-1. Is. The protrusion 13-1 is intended to block the incident light from the outside of the vehicle, which is reflected by the transparent resin plate 115, before reaching the eye point E of the driver. Since the case 15 is provided with the protrusion 13-1, the case 15 has a shape in which the upper portion of the case 15 is opened upward, and in terms of cost, the protrusion 13-1 can achieve the intended purpose with a small number of materials. Therefore, the transparent resin plate 115 has a structure inclined at a predetermined angle.

As the operation of the third embodiment, the transmission route of vehicle information as light is substantially the same as that of the first and second embodiments, but the incoming light from outside the vehicle is transmitted to the transparent resin plate 115 and the driver's eye. The point of blocking from the point E is different from the first and second embodiments. It goes without saying that the driver's dazzling can be prevented even by using such a vehicle display device 11 .

FIG. 4 is a sectional view schematically showing a vehicle display device 17 according to the fourth embodiment of the present invention. Case 5,
Display 107, convex lens 109, reflection mirror 111, windshield
103, the position configuration of the driver's eye point E is substantially the same as that of the first embodiment, and the description thereof is omitted here. A sawtooth-shaped transparent resin plate 21 is provided in the opening formed in the upper portion of the instrument pad 19 made of the same material as the instrument pad 3. A partially enlarged view of the transparent resin plate 21 is shown in FIG. The transparent resin plate 21 prevents the driver from being dazzled by diffusely reflecting the incident light shown by the solid line in the figure on the upper surface a. In order to prevent the distortion of the image formation, the pitch forming the saw-tooth shape is formed with a few μm. Also, the arrow shown by the alternate long and short dash line in the figure indicates the reflection mirror 11
It is an optical path showing the vehicle information reflected from 1. The front surface a and the back surface b are formed at the same angle with respect to the optical path in order to reflect the vehicle information reflected from the reflection mirror 111 to a predetermined location on the windshield 103 which is treated with a semi-transparent mirror.

As the operation according to the fourth embodiment, the transmission route of vehicle information as light is substantially the same as that of the first to third embodiments, but the operation is performed by irregularly reflecting the incident light from the outside of the vehicle on the surface a. This is different from the operations of the first to third embodiments in that the dazzling of the person is prevented. It is needless to say that the intended purpose can be achieved even by using such a vehicle display device 17 , and further, the instrument panel can be formed in a natural appearance.

〔The invention's effect〕

As described above, according to the present invention, there is a preventive means for preventing external light incident from outside the vehicle through the windshield from being reflected by the transparent panel member and reaching the eyes of the driver. In addition, the external light is not reflected on the transparent panel to enter the eyes of the driver, the front view of the driver is not hindered, and the visibility of the vehicle information can be improved.

[Brief description of drawings]

1 is a schematic sectional view of a vehicle display device according to a first embodiment of the present invention, FIG. 2 is a schematic sectional view of a vehicle display device according to a second embodiment of the present invention, and FIG. Third of this invention
4 is a schematic sectional view of a vehicle display device according to an embodiment of the present invention, FIG. 4 is a schematic sectional view of a vehicle display device according to a fourth embodiment of the present invention, and FIG. 5 is a vehicle according to the embodiment of FIG. FIG. 6 is a partially enlarged view of a transparent resin plate constituting the display device for a vehicle, and FIG. 6 is a schematic sectional view of a display device for a vehicle according to a conventional example. 3 ... Instrument pad 9 ... Instrument pad 9-1 ... Projection 13 ... Instrument pad 13-1 ... Projection 19 ... Instrument pad 21 ... Transparent resin plate (transparent panel member) 115 ... Transparent resin Plate (transparent panel member)

Claims (3)

[Claims] 1. Vehicle information converted into light by an optical system having a transparent panel member on the upper part of the instrument panel installed inside the instrument panel is diffracted near the windshield through the transparent panel member. A head-up display type display device for projecting outside a vehicle has a preventing means for preventing external light incident from outside the vehicle through a windshield from being reflected by the transparent panel member and reaching the eyes of a driver. A vehicle display device characterized by the above. 2. The preventing means installs the transparent panel member so that an angle at which the driver cannot directly look at the transparent panel member when the driver of the vehicle is in a driving posture. The vehicle display device according to claim 1. 3. The periphery of the transparent panel member so that the driver cannot directly look at the reflected light of the external light reflected by the surface of the transparent panel member when the driver of the vehicle is in a driving posture. The vehicular display device according to claim 1, wherein a projection is provided on at least a part of the vehicle.