JPH0142132Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a display device that includes first and second light sources and a panel that transmits light from each of these light sources, and that displays different images depending on the lighting of each light source. .

Conventionally, in automobiles, for example, when a switch for controlling a load such as an air conditioner or a rear window defogger is turned on, a panel installed corresponding to the switch is illuminated, and the operating status of the load is displayed. A display device is used to display . In addition, for such a display device,
In order to indicate the position of the switch to the driver of the vehicle at night, a second light source may be provided separately from the light source for illuminating the panel, and the panel may be illuminated by this second light source. It is being done. However, when different displays are performed using two light sources in this way, conventionally, each display was distinguished by providing a difference in light intensity between the two light sources. The disadvantage was that the contrast became unclear and visibility deteriorated.

The present invention has been developed in view of the above circumstances, and its purpose is to provide a configuration in which different displays are displayed using transmitted illumination from the first and second light sources through the same panel, while improving the contrast between each display. An object of the present invention is to provide a display device that can make the images sufficiently clear and improve the visibility of the display.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an operation knob of a push button type switch installed on the dashboard of a car, for example, and each time this operation knob 1 is pressed, the switch is turned on and off, for example, the power to an air conditioner is turned on and off. ing. Reference numeral 2 denotes a translucent panel disposed at the tip of the operating knob 1 (on the near side for the driver of the car), and its specific configuration will be described later. Reference numeral 3 denotes a first light source disposed behind the operating knob 1, which is constituted by a light source having a spectral distribution corresponding to a plurality of color components, such as a tungsten lamp. A second light source 4 is also placed behind the operation knob 1 and separated from the first light source 3, and is composed of a light emitting diode whose spectral distribution is monochromatic, e.g. green-blue light emitting color. ing. In this case, the first light source 3 is turned on when the air conditioner switch is turned on, and the second light source 4 is turned on.
is designed to be lit when the car's lighting switch is turned on. 5 is panel 2
and a light guide member disposed between the first light source 3. The light guide member 5 guides the light from the first light source 3 to the panel 2, and also guides the light from the first light source 3 to the panel 2.
This is for guiding the light from the panel 2 to the panel 2 after passing through the reflective surface 5a.

Now, FIG. 2 and FIG. 3 show a specific configuration of the panel 2, which will be described below.
That is, in the panel 2, 6 is a transparent sheet, and on the back side of this transparent sheet 6, display characters 7 such as "A/C" are printed in white, for example, and the display characters 7 are printed on the operating knob 1. It is designed to be visible from the front. Further, on the entire area of the back side of the transparent sheet 6 except for the display characters 7, an orange transparent display section 8 is printed, which is a complementary color to the color of the second light source 4 (greenish blue). It is formed by. In this case, the transparent display portion 8 is formed by printing the display characters 7 with so-called cut-out characters, and the entire surface of these display characters 7 and the transparent display portion 8 is printed in white. You can also do it.

According to the above configuration, when the lighting switch of the automobile is turned on, the green-blue second light source 4 is turned on.
When the is turned on, the light from the second light source 4 reaches the panel 2 via the light guide member 5, but in this case, the transparent display portion 8 is colored with the color of the second light source 4 (greenish blue). Since it is formed in orange, which is a complementary color, the transparent display portion 8 exhibits an achromatic color. As a result, the white display characters 7 are illuminated in a greenish-blue color by the light from the second light source 4, thereby displaying the position of the operating knob 1 at night. On the other hand, when the air conditioner switch is turned on in response to pressing the operating knob 1, the first light source 3 is turned on. In this case, since the first light source 3 is constituted by a tungsten lamp with a wide spectral distribution and the display transparent portion 8 is formed in orange color, the first light source 3
Of the light from the air conditioner, only the orange spectral component is transmitted through the transparent display portion 8 and illuminated in orange, thereby indicating that the air conditioner has been operated. Therefore, according to this embodiment, the contrast between the position display of the operating knob 1 and the operation display of the air conditioner becomes extremely clear, and the visibility of the display does not deteriorate as in the past. . Further, when the position of the operation knob 1 is being displayed, the display characters 7 are illuminated in green-blue color and the display transparent portion 8 is achromatic.
The contrast between the display characters 7 and the display transparent portion 8 becomes clear.

Note that when the first light source 3 is turned on in this manner, the display characters 7 are illuminated in white.

Further, in the above embodiment, the second light source 4 is composed of a green-blue light emitting diode, but the invention is not limited to this.
For example, the second light source 4 may be configured with a red light emitting diode, and the display transparent portion 8 may be formed in a bluish-green color that is complementary to the red color.

According to the present invention, as is clear from the above description, although the configuration is such that different displays are displayed by transmitted illumination from the first and second light sources through the same panel, the contrast of each display is maintained sufficiently. It is possible to achieve excellent effects such as being able to make the display clear and improving the visibility of the display.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic vertical cross-sectional view showing the arrangement relationship, and FIGS. 2 and 3 are a front view and a vertical cross-sectional view of the panel, respectively. In the figure, 2 is the panel, 3 is the first light source, and 4 is the second light source.
, 7 is a display character, and 8 is a transparent portion for display.

Claims (1)

[Scope of utility model registration request] a first light source having a spectral distribution corresponding to a plurality of color components; a second light source having a spectral distribution corresponding to monochromatic light; and a second light source arranged to receive light from each of the light sources. A display comprising a panel having a transparent display portion formed in a complementary color to the first light source, and configured to selectively light up the first and second light sources. Device.