JPH02234857A - Display device for automobile - Google Patents

Abstract

PURPOSE:To reconcile improvement of the desinability and the reduction of power consumption by forming a smoke panel by a light permeability variable member and varying the light permeability according to the operation and non-operation of a display means on the back surface of the smoke panel. CONSTITUTION:A cluster part 5 has, for example, a speed meter 11 and other various display means disposed on the upper surface of an instrument panel 20. A smoke panel 16 is disposed on the front surface side of the panel 20, and a back lamp 19 for display illumination is disposed on the back surface side thereof. In this case, the smoke panel 16 is formed by a full-solid type electronic thin film element (EC), and driven by a smoke lens driving circuit 30 to variably control its smoke degree, namely, light permeability. The above circuit 30 is connected to an ignition switch IG.SW, and its drive voltage signal is regulated by an illumination controller 17.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a display device for an automobile.

(Prior Art) Generally, the instrument panel of an automobile is provided with various information display means such as a speedometer and a tachometer. A lighting device (backlight) for illuminating at night is provided behind these information display devices, while a protective transparent panel with anti-glare treatment is provided on the front side (f 'lJ Jitsukai Showa 5 9 - l 2
(Refer to Publication No. 093).

Incidentally, recently, from the viewpoint of interior design, cases have arisen in which the protective panel on the front surface of the instrument panel is configured as a smoked panel.

(Problem II to be Solved by the Invention) However, when the front panel is formed of a smoked member as described above, the following problem occurs.

In other words, if you try to make the instrument panel part as blackface as possible to achieve a design effect, you will inevitably increase the degree of smoke on the front panel. There is a problem in that the illuminance on the side must be increased, leading to an increase in wattage loss and an accompanying increase in power consumption.

(Means for Solving Problem I) The present invention was made for the purpose of solving the above problem, and includes a smoke panel, an information display means provided behind the smoke panel, and a display device for displaying information, etc. provided behind the smoke panel. In the display device for an automobile, the smoke panel is formed of a variable light transmittance member, and the light transmittance of the variable light transmittance member is variably controlled. The present invention is characterized in that a variable member control means is provided so that the light transmittance can be made variable depending on whether the display means is activated or deactivated.

(Function) In the configuration of the automobile display device of the present invention, the smoke panel, the information display means provided behind the smoke panel, and the illumination means provided behind the display means are used. In the automatic market display device, the smoke panel is formed by a variable light transmittance member, and a variable light transmittance member control means for variably controlling the light transmittance of the variable light transmittance member is provided, The light transmittance of the smoke panel is made variable depending on whether the display means is activated or not.

In other words, when illumination is not required, such as when the display means is not activated, the smoke level of the front smoke panel is made sufficiently high to enhance the design effect, while when illumination is required, such as when the display means is activated and the vehicle is running, the transmittance is reduced. By increasing the brightness and reducing the smoke level, normal illuminance is sufficient.

(Effects of the Invention) Therefore, according to the display device for an automobile of the present invention, it is possible to provide a display device that achieves both the effect of improving the design effect by using a black face and saving power consumption.

(Embodiment) FIGS. 1 to 4 show a display device for an automobile according to Embodiment 1'A of the present invention.

First, in FIG. 2, reference numeral 5 indicates a part of a cluster provided in the instrument panel section 2 of the front Is of the automobile 1, and the cluster section 5 includes, for example, a speedometer 11, a tachometer 12, a tachometer 12, etc. on the instrument panel 20. It is comprised of various display means such as a battery voltage indicator 13, an engine water temperature indicator 14, and a fuel meter 15.

On the other hand, the instrument panel 2 of the Cluster 5
As shown in Figure 1, a smoke lens (smoke panel) 16 with anti-glare treatment is provided on the front side of the camera.
The smoke lens 16 is composed of, for example, an all-solid-state electrochromic*a element (EC), and has a third
It is driven by the output voltage of a smoke lens drive circuit 30 as shown in the figure, and its smoke degree, that is, light transmittance, is variably controlled.

The smoke lens drive circuit 30 is activated when the tC contact IC-SW of the ignition key switch is turned on, for example, and the smoke level is adjusted to the set level set by the illumination scene controller (smoke level adjustment volume) 17 consisting of a variable resistor. A driving voltage signal Vc is outputted, and a mark 11 is placed between both terminals. As a result, as shown in FIG. 4, the smoke lens l6 has the applied voltage Vc
The degree of smoke (light transmittance) is controlled according to the value of .

On the other hand, behind the instrument panel 20, a back lamp 19.19 for illuminating the display surface of the instrument panel 20 is installed.

The back lamp 19.19 irradiates light from behind the display means such as the speedometer and tachometer 12 to the smoke lens side, causing the scale 18A and pointer 18B to emit light, so that the driver can see them through the smoke lens 16. shall be.

Therefore, according to the configuration, the backlight 19.19
Blackface and illumination control are possible without changing the light source illuminance. Further, as a result, there is an advantage that the emitted light color can be made constant.

Next, FIG. 5 shows an instrument panel 2 in which a smoke lens l6 that has been subjected to the same anti-glare treatment as described above is used in a planar structure.
0, while the frontmost protective panel 2K
This is a display device for an automobile according to a second embodiment of the present invention, which is constructed of a non-variable transmittance type acrylic panel with a low degree of smoke.

In the case of this embodiment, since the smoke lens 16 whose transmittance is to be changed can be formed in a planar structure, it has the advantage of being easy to manufacture.

[Brief explanation of the drawing]

3 is a cross-sectional view showing the configuration of a display device for an automobile according to a first embodiment of the present invention, FIG. 2 is a front view of an instrument cluster section of an automobile equipped with the display device, and FIG. , FIG. 4 is a diagram showing the control characteristics of the same circuit, and FIG. 5 is a diagram showing the configuration of a display device for an automobile according to a second embodiment of the present invention. FIG. 1...Car 2...Instrument panel section 5...Cluster 11e●...Speedometer! 2 ・ 1 3 Φ 1 4 ・ 1 5 ・ I 6 ・ L 7 ・ L 9 ・ 20 ・ 3 0 Circuit: Self! +111 +ll: Ins 1-lumen 1 panel, 1: Cluster part: Speedometer. :Tachometer:Battery voltage indicator:Engine water 4! Indicator l5: Fuel meter 19: Backlight 20: Instrument panel 30: Smoke lens wl dynamic circuit 397- Fig. 3 Fig. 4 Fig. 5

Claims (1)

[Claims] 1. An automobile display device comprising a smoke panel, an information display means provided behind the smoke panel, and an illumination means provided behind the display means,
The smoke panel is formed of a variable light transmittance member, and a variable light transmittance member control means for variably controlling the light transmittance of the variable light transmittance member is provided, and the smoke panel is provided with a variable light transmittance member control means for variably controlling the light transmittance of the variable light transmittance member. A display device for an automobile, characterized in that the transmittance is made variable.