JPH0629096Y2 - Vehicle display - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a reflection member for displaying a display image of a display for displaying driving information such as vehicle speed, engine speed, remaining fuel amount, time and various warnings. The present invention relates to a vehicular display device which is projected and displayed on the reflective surface of the vehicle so that the driver can visually recognize it.

[Problems to be solved by conventional techniques and devices]

Conventionally, as this type of device, in order to obtain a sufficiently large projected display image even if the display image on the display is small, as shown in FIG. 12, the reflecting surface 1 of the reflecting member is a concave surface. It is considered. In this conventional device, the reflecting member is composed of a glass plate which is curved in advance, and a reflecting film is vapor-deposited on the surface of the glass plate as needed. In FIG. 12, C is the center of the curved arc of radius R forming the reflecting surface 1, F is the focal point of the reflecting surface 1, O is the origin, PQ is the display image on the display, and a is the display image PQ. From the origin, b is the image forming position of the erecting virtual image P′Q ′, and the position of the display image PQ is When the condition of is satisfied, the curved mirror formula From the above, it is possible to form an erecting virtual image with a desired magnification b / a (= m) by determining appropriate a and R.

However, the glass plate 1 is difficult to be curved, and thus a concave surface having a desired curvature cannot be obtained, which causes a problem that the projected display image is distorted.

Therefore, the present invention is intended to provide a vehicle display device in which a reflecting surface having a desired concave curvature can be easily obtained.

[Means and Actions for Solving Problems]

In order to solve the above-mentioned problems, a vehicle display device according to the present invention is provided with a concave reflecting surface facing a driver's seat and a reflecting surface facing the reflecting surface of the reflecting member. And a display means for projecting and displaying driving information on the reflective surface when displayed on the display surface, wherein the reflective member is
It has a reflection material having a thin flat glass plate as a base material, a window frame pre-curved in a shape following the concave reflection surface, and an iron plate pre-curved similarly to the window frame. The window frame and the iron plate sandwich the reflection plate via a packing between them, and the peripheral portions of the window frame and the iron plate are integrally connected to each other by screw screws, and the reflection plate is The peripheral portion is pressed against the window frame through the packing by the iron plate and is curved so as to follow the curved shape of the window frame, and the surface exposed in the window hole of the window frame serves as the concave reflection surface. It is characterized by doing.

In the above configuration, the reflection member is composed of a reflection plate, a window frame and an iron plate, and the reflection plate is a thin flat glass plate as a base material, and the window frame is preliminarily curved and shaped to follow the concave reflection surface. Is pre-curved similarly to the window frame. Then, the reflector is sandwiched between the window frame and the iron plate through the packing, and the both parts are connected to each other by screw screws to integrate them, and the periphery of the reflector is connected to the window frame by the iron plate through the packing. The surface of the window frame, which is pressed to be curved so as to follow the curved shape of the window frame and is exposed to the window hole of the window frame, is used as the concave reflecting surface of the reflecting member.

Therefore, by preliminarily forming the window frame and the iron plate by curving, and sandwiching the flat plate-shaped reflection plate between them, the reflection member having a concavely curved reflection surface can be obtained.

〔Example〕

An embodiment of a vehicle display device according to the present invention will be described below with reference to the drawings.

1 to 11 show an embodiment of the present invention, in which 10 is a windshield of a vehicle, 12 is a dashboard, and 14 is a steering wheel.

The dashboard 12 is projected from the lower edge of the windshield 10 toward the interior of the vehicle, and has a substantially horizontal upper surface 12
1 is cut out in a circular arc shape in the front portion facing the driver's seat to form a step portion 122. A reflecting member 16 on which a display image of a display device, which will be described later, is projected is installed on the step portion 122 via a support tool 18, whereby the reflecting member 1 is provided.
6 has a structure in which the reflecting surface 161 is provided at the instrument panel position of the dashboard 12 with the driver's seat side facing.

The reflection member 16 has a substantially rectangular shape with the long side in the left-right direction, and the reflection surface 161 is a concave surface slightly curved in the left-right direction and is supported by the support 18 while being inclined downward slightly. The connection with the support 18 is made on the surface opposite to the reflection surface 161 of the reflection member 16, that is, the back surface, and in the connection portion 162, the inclination angle of the reflection surface 161 can be adjusted within the range of 2 to 3 degrees. .

More specifically, the reflection member 16 and the support 18 are configured as shown in FIGS. 7 to 11.

In the figure, a reflection member 16 is a partially transmissive reflection plate 16a,
It is composed of an iron plate 16b which is bent by molding in advance, a window frame 16c, packing 16d and a back plate 16e which are molded in advance like the iron plate 16b. Reflector 16a is a thin plate-shaped glass plate 16a ₁ and the vapor deposition film 16a ₂ Metropolitan made of metal such as TiO ₂ formed on the surface thereof, and constitutes a so-called half mirror.

The iron plate 16b and the window frame 16c can be molded with relatively high precision by a mold, and the reflector 16a is sandwiched between them by a packing 16d, and the peripheral parts are integrated by being screwed together with a screw screw 16f. ing. Due to this integration, the peripheral portion of the reflection plate 16a is forced by the window frame 16c to be curved according to the curved shape of the iron plate 16b, and the concave reflection surface 161 exposed in the window hole 16c ₁ of the window frame 16c. To form. A back plate 16e which functions as a decorative plate is fixed to the back surface of the iron plate 16b by fitting or adhering.

The support tool 18 attached to the back surface of the reflecting member 16 has a pair of bolts 18a that are inserted into holes 12a formed in the dashboard 12, and a nut 18b is screwed into the bolts 18a so that the support member 18 is attached to the dashboard 12. The stay 18c is fixed, the support rod 18d is fixed to the stay 18c at one end and stands up, and the channel-shaped support fitting 18e is fixed to the other end of the support rod 18d. Each of the pair of connecting pieces 16g protruding from the back surface of the reflecting member 16 is rotatably connected to the pair of connecting pieces 16g, for example, by caulking 18f at a predetermined angle and within a range of about 2 to 3 degrees. A bellows-shaped tube 18g for makeup is placed on the outer periphery of the support rod 18d, and a cover 18h is placed on the connecting portion.

In addition, a friction member such as a felt can be interposed in the connecting portion so as to surely hold the rotating position.

Reference numeral 20 denotes a column cover that covers a steering shaft rod (not shown) that connects the steering wheel 14 and a steering mechanism in the engine room, and a shaft rod through hole 201 through which the steering shaft rod is formed is formed in a central portion thereof. Has been done. The column cover 20 is slightly inclined forward and downward along the steering shaft rod, and the end portion on the steering wheel side and the reflection side portion are inserted into the dashboard 12.

The uppermost end of the steering wheel side end of the column cover 20 has a height substantially equal to the surface of the stepped portion 122 of the dashboard 12, and the upper surface of the column cover 20 is kept at this height while the steering wheel side end. The display housing 202 is formed by projecting upward from the section to the middle section and projecting both side surfaces of the column cover 20 to the left and right in the middle section. The left and right protrusions of the display accommodating portion 202 are further protruded rearward, that is, toward the steering wheel side to form switch accommodating portions 203 and 204.

On the surface 202a of the display housing 202 that faces the reflecting surface 161 of the reflecting member 16, the display housing 2 is provided.
Window holes 202b, 202c, and 202d are opened in which the display surface of the display device housed and fixed in 02 is exposed. The display surface 22 facing the window hole 202b is an engine speed indicator that displays the engine speed as a bar.
The display surface 24 of 02c is a cooling water temperature display, and the display surface 26 of the window 202d is a display surface of a fuel remaining amount display.

Near the dashboard 12 of the column cover 20,
By the column cover 20 itself, the display housing 205
Are formed on the upper surface of the column cover 20 in that portion, the two rows of window holes 205a facing the display surface of the display accommodated in the display accommodating portion 205 and the concave portion having a V-shaped cross section. The location 205b is formed. The display surface 28 facing the window 205a is a display surface of a display device that displays a warning about a half door, a seat belt, and the like.
A window hole 205c is formed in the surface of the recess 205b facing the reflection surface 161 of the reflection member 16, and the display surface 30 of the display for displaying the vehicle speed is exposed to the window hole 205c.

As the display accommodated in the display accommodating portions 202 and 205, a self-luminous type using a fluorescent display tube, a light emitting diode, a transmissive liquid crystal having a backlight, or the like is preferably applied.

Various switches are accommodated in the switch accommodating portions 203 and 204, and an operator of each switch is arranged in a portion in the vicinity of the steering wheel 14, and some fingers are put on the steering wheel so that the hand of It can be operated with other fingers.

In particular, column switches are housed in the switch housing portion 204, and in the figure, a rear defogger switch operator 204a, an emergency flashing light switch operator 204b, a parking switch operator 204c, and a washer switch operation that operate these switches. The child 204d, the light switch operator 204e, the wiper switch operator 204f, the turn switch operator 204g and the like are shown. On the other hand, the switch accommodating portion 203 accommodates switches for operating an on-vehicle air conditioner, a radio, and a navigation device, and four select switch operators 203 are shown in the figure.
a, 203b, 203c, 203d and mode designation switch operators 203e, 203 for selecting the switches operated by these operators for air conditioner operation, radio operation, and navigation operation, respectively.
f, 203g is shown. In addition, the switch housing 2
03 includes select switch operators 203a to 203d.
A dot-matrix display device for displaying the respective functions and the like is accommodated, and its display surface 203h is provided toward the driver.

With the above-described configuration, the driver can operate the steering wheel 1 as shown in FIGS. 4 and 5 while sitting in the driver's seat.
The reflecting surface 161 of the reflecting member 16 can be seen through the semi-circular space 141 above the number four. Therefore, the display surface 2
The display image displayed on 2, 24, 26, 28, 30 is the fifth
As shown in the figure, by being projected on the reflecting surface 161 of the reflecting member 16 and being reflected by the reflecting surface 161, it reaches the eyes 32 of the driver through the space 141 of the steering wheel 14. As a result, the driver can
The erecting virtual image X of the display image formed at a predetermined position behind 6 can be visually recognized to obtain necessary information.

By the way, the display surface 2 is provided on the reflection surface 161 of the reflection member 16.
Not only the display images of 2 to 30 are projected, but also the images of those around the display surfaces 22 to 30 are also projected. Therefore, when the reflecting surface 161 is a perfect reflecting surface, an image other than the display image is superimposed on the image reflected by the reflecting member 16 so that the driver can visually recognize it, and the visibility of the display image is impaired. However, the reflection plate 16d forming the reflection surface 161 of the reflection member 16 is formed on the glass 16a ₁ by depositing the metal deposition film 1 on the glass 16a 1.
Becomes a half mirror forming a 6a _2, when the reflectance is reduced, the light of the image other than the display images because weaker than the display image is attenuated during the inputted and reflected at the reflective surface 161 of the reflecting member 16 , When it reaches the eyes of the driver, it is weakened to the extent that it cannot be clearly seen. Since the light of the display image is sufficiently intense, even if it is attenuated, there is no problem in visually recognizing the display image.

In the arrangement of the display surfaces 22 to 30 described above, the display that the driver can visually recognize within the range of the reflection surface 161 of the reflection member 16 is as shown in FIG. In the figure, A, B, and C are engine speeds, cooling water temperatures, and fuel residual amounts displayed by bars, D is a warning display, and E is a vehicle speed display.

As described above, only the reflection member 16 is provided at the instrument panel position of the dashboard 12, and all the display performed within the range of the reflection surface 161 of the reflection member 16 is provided on the part other than the dashboard 12. It is formed by the erecting virtual image formed behind the reflecting member by the projection of the display image from the display. Therefore, the driver does not see the displayed image even when the instrument panel position is reflected on the windshield 10 by the window, and the meter hood is unnecessary.

〔effect〕

As described above, according to the present invention, the window frame and the iron plate are preliminarily curved, and the flat plate-like reflector is sandwiched between the two to be integrated with each other. Since the member can be obtained, the window frame and the iron plate can be more accurately and easily curved-formed than the glass plate, so that the concave reflecting surface having a desired curvature can be easily obtained with high precision and expanded without distortion. A projected display image can be obtained.

Further, the assembly work required for this purpose is to insert a flat plate-like reflection plate between the window frame and the iron plate and integrate them, so that not only the assembly cost is not significantly increased, but also the reflection surface Variations among products are reduced.

[Brief description of drawings]

1 is a perspective view showing an embodiment of a vehicular display device according to the present invention, FIG. 2 is a perspective view of the same device seen from a direction different from that of FIG. 1, and FIG. Top view, FIG. 4 is a front view of the same device, FIG. 5 is a side sectional view of the same device, FIG. 6 is a view showing a display example of the same device, and FIGS. 7, 8, and 9 are the same. A side sectional view, a top view and a rear view of a reflection member and a support of the apparatus, FIG. 10 is an exploded perspective view of the reflection member of the apparatus, FIG. 11 is a partial cross-sectional view of a reflection plate of the apparatus, and FIG. 12 is It is explanatory drawing which shows the principle of expansion by a concave reflective surface. 12 ... dashboard, 16 ... reflection member, 16b ... iron plate, 16c ... window frames, 16f ... Nejibisu, 16a ₁ ... glass plate, 161 ... reflective surface, 22, 24, 26, 28
… Display surface.

Claims (1)

[Scope of utility model registration request] 1. A reflecting member having a concave reflecting surface facing the driver's seat side; and a display surface facing the reflecting surface of the reflecting member, wherein the driving information displayed on the displaying surface is reflected by the reflecting member. A display means for projecting and displaying on a surface, the reflection member, a reflection plate having a thin flat glass plate as a base material, and a window frame pre-curved in a shape that follows the concave reflection surface, Similar to the window frame, it has a pre-curved iron plate, and the window frame and the iron plate sandwich the reflection plate with packing between them, and the peripheral portion of the window frame and the iron plate is screw-threaded. The reflecting plate is curved so as to follow the curved shape of the window frame by being pressed against the window frame by the iron plate through the packing, and is integrated with the window. The surface exposed in the window of the frame should be the concave reflection surface. Vehicle display apparatus according to symptoms.