JPH08169274A - Automatic variable device for illuminating direction of illumination light on travel body - Google Patents

Abstract

PURPOSE: To provide a device for detecting a light source forward of a travel body, and automatically selecting an illuminating direction. CONSTITUTION: This automatic variable device for the illuminating direction of an illumination light on a travel body is equipped with a photo detector 1 for detecting a light source near the advance direction thereof, a brightness judgment unit 3 for making judgment about the level of the brightness of the detected light source, and a selector device for making a selection between the high and low beams of a headlight on the basis of a selector signal from the unit 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention synchronizes an illumination light such as an automobile, a train, a motorcycle including a motorbike, a headlight of a moving body such as a bicycle, an auxiliary light with the light and darkness of a light source near the traveling direction. , A high beam and a low beam, to prevent the dazzling of an oncoming vehicle and to improve the visibility of the route at dusk or at night.

[0002]

2. Description of the Related Art Conventional headlights for motorcycles including automobiles and motorbikes are of a type in which a high beam and a low beam are manually switched, and there is no device for automatically switching them by detecting a light source near the traveling direction. There wasn't. Also,
There was no other train, bicycle, or other device to switch between high and low beams.

[0003]

[Problems to be Solved by the Invention] Conventional automobiles and trains,
Motorcycles including motorized bicycles, headlights of moving bodies such as bicycles, and illumination lights of auxiliary lights are the manual switching method as described above, so when operating the moving body by lighting the nighttime illumination light, There is a problem in that switching may be forgotten, and when a high beam is passed by an oncoming vehicle, the oncoming vehicle is dazzled and the safety confirmation in front of the traveling direction is reduced.

[0004]

According to the present invention, there is provided a moving body illumination lamp irradiation direction automatic variable device, a photodetector for detecting a light source in the vicinity of a moving direction of a moving body, and a light / dark for determining the light / dark of the detected light source. It is provided with a judging device and a switching controller for switching between a high beam and a low beam of the illuminating lamp according to the switching signal judged by the brightness / darkness judging device.

[0005]

According to the present invention, the high beam and the low beam, which are the illuminating directions of the illumination light of a moving body such as an automobile, a motorcycle or a bicycle, are automatically switched to improve the visibility of the course at night and prevent the dazzling of an oncoming vehicle. To do.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic irradiation direction changing device for a moving body illumination lamp according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram of an embodiment, in which 1 is a photodetector configured to detect a light source near a moving direction of a moving body, for example, a photodetector composed of a photodiode, 2
Is an amplifier for amplifying the output of the photodetector 1, 3 is a brightness / darkness judging device for judging the light quantity of the light source amplified by the amplifier 2, 4 is a judgment signal judged by the brightness / darkness judging device 3, and A switching controller 5 for controlling switching between a high beam and a low beam, which is an irradiation direction, is an illuminating lamp, and 6 is a switching indicator for indicating the high beam and low beam states of the illuminating lamp.

When a moving body such as an automobile, a motorcycle or a bicycle equipped with such a device is operated at night or in dusk with the illumination lamp 5 turned on, the light source in front of the moving body is detected by the photodetector 1. This detection signal is amplified by the amplifier 2 and given to the switching controller 4 via the brightness / darkness determiner 3.
The switching controller 4 switches between the high beam and the low beam of the illuminating lamp 5 according to the determination signal transmitted and received from the lightness / darkness determination device 3.

The switching controller 4 for switching between the high beam and the low beam, which is the irradiation direction of the illumination lamp, may be a controller which continuously changes the irradiation direction by an amount proportional to the amount of light detected by the photodetector 1.

Although it has been described that the photodetector is composed of a photodiode, it may be composed of a photoelectric tube, a phototransistor, a photocell or the like as long as it can detect light.

In the description with reference to FIG. 1, the illuminating lamp 5 is always lit during night driving, but when the photodetector 1 does not detect a light source near the traveling direction, the illuminating lamp 5 is lit and the light source is detected. You may make it light-extinguish at a time.

[0011]

As described above, according to the present invention,
When operating a moving object such as a car, motorcycle, or bicycle at dusk or at night, it detects a light source near the direction of travel, and if there is no light source to detect, a high beam that automatically illuminates the light of the illumination lamp to a distant place By switching, early detection of obstacles and targets in the surroundings is facilitated, and the effect of enabling safe operation of the moving body is obtained.

It should be noted that, like the headlights of automobiles, the switching indicator 6 for indicating the high beam and low beam states
Manual operation is also possible.

Further, when a light source is detected in the vicinity of the traveling direction, the dazzling of an oncoming vehicle can be expected to be reduced by automatically switching to a low beam.

[Brief description of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

[Explanation of symbols]

 1 Photodetector 2 Amplifier 3 Brightness / darkness determination device 4 Switching controller 5 Illumination lamp 6 Switching indicator

Claims (1)

[Claims] 1. A photodetector for detecting a light source in the vicinity of a moving direction of a moving body, a light / dark determiner for determining the light / dark of the detected light source, and a high beam / low beam of an illumination lamp is switched by a switching signal of the light / dark determiner. A moving body illumination lamp irradiation direction automatic changing device characterized by comprising a switching device