JPS6056646A - Illuminating apparatus in indication part for car - Google Patents

Abstract

PURPOSE:To prevent the momentary reduction of visual perceptibility by allowing an illuminating lamp to slowly dim-out continuously or in stepwise in the early period of night illumination, in a dimming-out means for the illuminating lamp in display part, in the case when a night illuminating lamp is turned ON. CONSTITUTION:An illuminating lamp 1 in display part is tuned ON by a power source 3 through the switch 2 such as ignition switch, etc. When a night illumination lamp 5 such as headlight, etc. is turned ON by switching ON an illuminating switch 6, a light dimming-out means 4 is operated, linked with the operation of the switch 6, and the illuminating lamp 1 in display part is dimmed-out in a prescribed degree. Said dimming-out means 4 slowly lowers the voltage continuously or in stepwise in a prescribed delay time, and the illuminating lamp 1 in display part is gradually dimmed-out. Therefore, the momentary reduction of the visual perceptibility which tends to be generated on dimming-out in the daytime can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an illumination device for an instrument panel or other display in an automobile or other vehicle.

Conventionally, this type of device has been designed to dim the display illumination lights that illuminate the instrument panel and other front parts in conjunction with turning on headlights and other nighttime lights, that is, when turning on a light switch. Although such formulas are known, in this case, the dimming is generally performed instantaneously and rapidly), and such formulas have the following inconveniences, especially during the daytime. For example, if you enter a tunnel or other dark place during the day and turn on the light switch, or if you turn on the same switch in dense fog, the display illumination will be instantly dimmed. It is conceivable that the visibility of the 1-moment display section is reduced because the human visual sense is delayed in tracking the screen.

The object of the present invention is to obtain a device that does not have such inconveniences, and is designed to reduce the brightness when turning on the display part lighting bracket, headlights, and other night lights that illuminate the N1 instrument panel and other display parts. In the device provided with a dimming means, the dimming means is configured to gradually dim the display part illumination light continuously or in steps at the beginning of the lighting of the night illumination light.

An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawing, (1) shows a display illumination lamp that illuminates the instrument panel and other display parts, and the illumination light (1) is connected to the power supply (3) through an ignition switch and other switches (2). The circuit is connected to the lighting lamp (1
) shall be provided with an appropriate dimming means (41). In the drawing, (5) indicates a headlight or other night illumination light. ), and a lighting switch (6) is intervened in the circuit. 1. When the switch (6) is turned on, the above-mentioned dimming means t4+ is operated in conjunction with this, and thus the lighting A predetermined dimming is applied to fil.

The above is not particularly different from the conventional one, but according to the present invention,
The cough dimming means (4) is of a type that operates with a delay, so that the dimming is carried out slowly or continuously or in steps, for example as shown in Figures 2 and 5. . The dimming means (4)
For example, the voltage applied to the illumination lamp il+ is adjusted, and in this case, the applied voltage is gradually lowered with a delay time of 1o as shown in FIGS. 2 and 3. .

In this way, according to the present invention, the instrument panel and other display parts'
f! : A device that allows the illumination lights to be dimmed slowly when turning them on at night.Especially in the daytime, it is possible to eliminate the instantaneous drop in visibility that tends to occur when the light is dimmed, and it is It does not cause any inconvenience, and has advantages such as its simple structure and low cost.

[Brief explanation of drawings]

Figure 1 shows the circuit diagram of one example of the device of the present invention, and Figures 2 and 3 are explanatory diagrams of each example of its operation. )... Switch (3)... Power supply (4)... Dimming means (5)... Night illumination light (6)... ...Switch patent applicant Honda Motor Co., Ltd.

Claims (1)

[Claims] Display section j1 that illuminates the instrument panel and other display sections An illumination device for a display section in a vehicle, which is configured to gradually dim the display section illumination light continuously or stepwise.