JPS62139728A - head up display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a head-up display that allows a driver of an automobile to check a speed display and the like without significantly changing his or her line of sight.

(Prior technology) A car's speedometer is installed on the instrument panel, and in order to check the speed display, etc., the driver has to look down to read the instructions on the meter. Listen. As a result, monitoring of the forward field of view is momentarily interrupted, which may impair safe driving.

For this reason, a head-up display has been devised that projects the speed displayed on the speedometer onto the windshield and displays it within the front field of view. An example thereof is shown in FIGS. 5 and 6. In the figure, 1 is a speedometer attached to the ink crane/4' panel, 2 is a mirror attached to the upper hood 3 of this speedometer 1, and the speed display 1a of the speedometer 1 is displayed at the bottom of the windshield 4. It is designed so that it can be photographed. That is, the mirror body 2 is tilted at a position where the mirror surface 2a faces the speedometer 1 through the window 3a formed in the upper hood 3, and at an angle that allows the mirror surface 2a to reflect the speed display 1a and project it onto the windshield 4. It is set up so that it is in the same condition.

However, in such a structure, the mirror body 2 can be directly accessed from the oncoming vehicle side.
The mirror surface 2a of the camera can be seen, and there is a risk of being dazzled by the reflected light. Further, when the speed display la of the meter 1 is projected onto the windshield 4, the projected image may become a double image due to the thickness of the windshield 4, or it may become difficult to see when exposed to direct sunlight.

Furthermore, it is necessary to adjust the projection position of the windshield according to the position of the driver's eyes, which is troublesome.

(Object of the Invention) An object of the present invention is to provide a head-up display that can clearly project the speed display of a car's speedometer on the windshield and reduce the impact on oncoming vehicles.

(Summary of the Invention) The present invention provides a display unit for displaying speed, etc., on the dash board of an automobile, with the display surface facing upward and having a display configuration line-symmetrical to the display in the normal state projected on the facing windshield. A looper is installed above the looper that allows light to pass in the direction of the display projection position on the windshield, and a looper with a thick transmittance ( , and a film with high light reflectance is attached to the inside.

(Example) Figures 1 to 4 show an example of the present invention.
is a car dash board, 12 is a windshield, 1
3 is a display section installed on the dash board 11 with its display surface 13a facing upward and facing the windshield 12; 14 is a looper disposed above the display section 13; 15 is the windshield This is a display film attached to the inner surface of 12. This film 15 has a high reflectance from the inside and a high transmittance for light from the outside. For example, the transmittance is 30-60
%, and a polyester film with a reflectance of 5 to 40% is preferred.

The display unit 13 has a display configuration that displays the speed (approximately 3 digits) by emitting light as shown in FIG. I am trying to obtain a display that is line symmetrical.

Further, as shown in FIG. 3, the looper 14 has a shape in which a light shielding material 14b is inserted into a transparent resin 14a in a blind shape, and the looper 14 can be moved only in a certain direction according to the inclination of the light shielding material 141). Light passes through and light from other directions is blocked.

With the above configuration, for example, 1'-
When a speed display of 188j (which appears upside down on the display screen) is performed, this display is displayed on the film 15 on the inner surface of the windshield 12 via the looper 14, as shown in FIG. 188 J in the normal state. This projected display (mirror image) is within the driver's forward field of vision, allowing the driver to check the speed without significantly changing his line of sight. , the display surface 13a of the display unit 13 is blocked by the looper 14, so you will not be distracted by the light emitted from the display unit.Furthermore, since the projected display is performed on the film]5, the display is clear. can be,
Stable display even in direct sunlight.

(Effects) As described above, according to the present invention, there is provided a display section on the dash board of an automobile that has a display configuration in which the display surface faces upward and is symmetrical to the display normally projected on the facing windshield. Since a looper is installed above the looper to regulate the direction of light transmission, the driver will only be able to see the speed display under normal conditions within the forward field of vision, which may dazzle oncoming vehicles. Together with the elimination of this, this contributes to safe driving. In addition, a film that has a high transmittance of light from the outside and a high reflectance of light from the inside is attached to the display position on the inside surface of the windshield.
Double images are prevented, the display becomes clearer, and confirmation becomes easier.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a head-up display according to the present invention, FIG. FIG. 4 is a perspective view showing a display example of the same embodiment, and FIGS. 5 and 6 are a sectional view and a perspective view showing a conventional example. 11... Datsushi board, 12... Windshield, 13... Display section, 14...
...Rootscoo, 15...Display film. Patent applicant Stanley Electric Co., Ltd. Figure 3 Figure 4 Figure 6

Claims (1)

[Claims] On the car dashboard, the display surface is facing upwards,
In addition, a display section for displaying speed, etc. is installed as a display configuration that is symmetrical with the display in the normal state projected on the facing windshield, and above the display section, light is transmitted in the direction of the display projection position of the windshield. This head-up display is characterized in that it has a louver that allows this, and a film that has a high transmittance of light from the outside and a high reflectance of light on the inside is attached to the display projection position on the inner surface of the windshield.