JPH0556621U - Automatic lighting system for automobile lights - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the lights from being accidentally turned off when the road surface is illuminated by spot-shaped projectors and the vehicle is stopped at night or due to traffic congestion. [Structure] An automatic light-on / off device for an automobile light, which controls a light 3 of a vehicle by turning on / off a vehicle by calculating a traveling distance based on a signal from an illuminance sensor 4 detecting an ambient illuminance and a signal from a vehicle speed sensor 5 detecting a vehicle speed. When the ambient illuminance reaches the turn-off level, a turn-off signal is output by the signal from the illuminance sensor 4, and a time-lapse signal is output when the set time has elapsed while the turn-off signal is still being output, and at the same time, the turn-off is performed. When the vehicle travels for more than the set distance after the signal is output, the traveling signal is output, and the light 3 is controlled to be turned off when the above three signals are output at the same time. Make sure that light 3 is not turned off accidentally.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an automatic light-on / off device for a vehicle light, which automatically turns on / off the light according to the illuminance of the surroundings.

[0002]

[Prior Art]

 Some conventional automobiles are equipped with an automatic lighting / extinguishing device that automatically turns on / off the light according to the surrounding illuminance. In addition, recently, there is a lighting device that has a visible light cut filter on the front surface, that is, the road surface is illuminated by a projector that projects infrared light in a spot shape. When a car that turns on / off the above lights automatically stops at night, in traffic, etc., the illuminance sensor that detects the ambient illuminance becomes saturated and the detected illuminance is saturated because the illuminance is quite bright. It becomes dangerous and the car lights may turn off accidentally, which is dangerous.

Therefore, conventionally, a vehicle speed sensor is provided in a drive system such as a wheel, and a signal is fetched from the vehicle speed sensor and the illuminance sensor to a controller. Even if the illuminance detected by the illuminance sensor is high, the vehicle speed is constant. The light was prevented from being turned off accidentally by not turning off the light until it reached or after traveling a certain distance, or by raising the detection level of the illuminance sensor.

[0004]

[Problems to be solved by the device]

 However, if the former vehicle speed reaches a certain speed or the light is not turned off unless the vehicle travels for a certain distance, it will turn off if the vehicle travels a certain distance after the turn-off signal is output. The light may turn off in a short time, and it may turn off by mistake.

In the latter method of increasing the detection level of the illuminance sensor, there is a problem in that the illuminance sensor may not turn off even if the surrounding illuminance is sufficient. The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide an automatic lighting / extinguishing device for a vehicle light in which the light of the vehicle is not erroneously turned off.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, this invention is for an automobile that controls the light on the front of the vehicle body by turning on and off the light from the illuminance sensor that detects the illuminance of the surroundings and the signal from the mileage sensor that measures the mileage of the vehicle. In the automatic lighting / extinguishing device of the light, the turn-off signal that is output when the ambient illuminance reaches the turn-off level, the time-lapse signal that is output when the set time elapses until this turn-off signal is output, and the turn-off signal is output. After that, the light is turned off by the traveling signal output when the vehicle travels for more than the set distance.

[0007]

[Action]

 With the above configuration, even if the vehicle is stopped at night or in a traffic jam at a place where a lighting device such as a floodlight that projects a spot of infrared light is installed, the light of the automobile is safe without being erroneously turned off.

[0008]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. FIG. 1 is a schematic configuration diagram of an automatic lighting / extinguishing device provided in an automobile, FIG. 2 is an explanatory view of a traveling state of the automobile, and FIG. Is a vehicle body, 2 is a wheel, 3 is a light, 4 is an illuminance sensor, 5 is a vehicle speed sensor, and 6 is a control unit. The illuminance sensor 4 is installed on the dashboard 7 in front of the driver's seat to detect the illuminance in front of the vehicle body 1, and the detected signal is input to the control unit 6.

The vehicle speed sensor 5 is installed in the drive system of the wheels 2, etc., and the vehicle speed signal detected by the vehicle speed sensor 5 is input to the control unit 6. The control unit 6 is composed of a microcomputer, the vehicle speed signal input from the vehicle speed sensor 5 is counted by a pulse counter, and the traveling distance is calculated by the number of counted pulses.

The signal input from the illuminance sensor 4 to the control unit 6 is A / D converted by the A / D converter and then input to the central processing unit. The central processing unit includes the vehicle speed sensor 5 and the illuminance sensor. Based on the signal input from the sensor 4, the light 3 is controlled to be turned on and off via a drive circuit as follows. While the vehicle is running, the illuminance sensor 4 inputs the ambient illuminance and the vehicle speed sensor 5 inputs the vehicle speed to the control unit 6. The pulse counter 8 in the control unit 6 counts the pulse signals from the vehicle speed sensor 5. By doing so, the traveling distance data at the time of lighting is stored in the memory.

Next, when the ambient illuminance reaches the turn-off level, the turn-off signal is output by the signal from the illuminance sensor 4, and a time lapse signal is output when the set time has elapsed while the turn-off signal was being output, At the same time, when the vehicle has traveled for a set distance or more after the turning-off signal is output, the traveling signal is output, and the light 3 is turned off when the three signals are output at the same time.

Then, when a vehicle b enters at a place where a spot-like illuminator a by infrared light is installed as shown in FIG. 2 at night, the traveling state of the vehicle b and the light 3 are automatically turned off. The state will be described with reference to FIG. Since the illuminator a is fixed, its illumination range is constant, and the range exceeding the turn-off level X ₁ of this illumination system ( ₁ in FIG. 3) is constant. Now, when the vehicle b traveling in the direction of the arrow in FIG. 2 enters the illuminated range of the illuminator a that is lit and reaches the turn-off level illuminance range X ₁ , the illuminance sensor 4 is saturated and detected. The illuminance increases, and a turn-off signal is output. The time lapse signal is output when the set time has elapsed after the turn-off signal was output, but the light 3 is not turned off by this alone even after the turn-off signal is output and the set time has elapsed. Further, when the vehicle travels for a set distance L (> l) or more after the turning-off time is output, the traveling signal is output, and when the three signals are output, the light 3 is turned off. That is, even when the ambient illuminance exceeds the extinguishing level and a set time elapses until the extinguishment is turned on while the light 3 of the vehicle is turned on, the illuminance is X ₁ while traveling for a preset distance L (> l). If it does not exceed the limit, the extinguishing operation is not performed. On the contrary, at high speed, even if the distance L is passed after the illuminance exceeds X ₁ , the turn-off operation is not performed unless the set time elapses. That is, the turning-off operation of the light 3 of the vehicle is controlled by a logical product of (judgment of ambient illuminance) and (judgment of Lm traveling).

[0013]

[Effect of the device]

 As described in detail above, the present invention provides an extinguishing signal that is output when the ambient illuminance reaches the extinguishing level, a time lapse signal that is output when the extinguishing signal has been output for a set time, and an extinguishing signal. Since the light is controlled to be turned off by the traveling signal output when the vehicle has traveled for more than the set distance after is output, a lighting device such as a projector that projects infrared light in spots is installed. Even if you stop at the designated place at night or in traffic, it is safe because the car lights will not go off by mistake.

[Submission date] March 23, 1992

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is an automotive light for controlling the light of a vehicle by turning on and off the light of the vehicle by a signal from an illuminance sensor that detects the ambient illuminance and a signal from a mileage sensor that measures the mileage of the vehicle. In the automatic turn-on / off device of, the turn-off signal that is output when the ambient illuminance reaches the turn-off level, the time lapse signal that is output when the set time elapses with this turn-off signal output, and the turn-off signal is output. It is designed to control the light to be turned off by a traveling signal output when the vehicle travels for a set distance or more after being driven.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an automatic lighting / extinguishing device for an automobile light according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a traveling state of the automobile of the example.

FIG. 3 is an explanatory diagram of an automatic light-off state in the same traveling state.

[Explanation of symbols]

 3 Light 4 Illuminance sensor 5 Vehicle speed sensor

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[Procedure amendment]

[Submission date] March 23, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

Claims (2)

[Scope of utility model registration request] 1. An automatic light / extinguishing device for an automobile light for turning on / off a light at a front portion of a vehicle body based on a signal from an illuminance sensor for detecting ambient illuminance and a signal from a mileage sensor for measuring a mileage of a vehicle. In, the extinguishing signal that is output when the ambient illuminance reaches the extinguishing level, the time elapse signal that is output when the extinguishing signal continues to be output for the set time, and the set distance or more after the extinguishing signal is output. An automatic lighting / extinguishing device for a vehicle light, which controls to turn off the light based on a traveling signal output when the vehicle travels. 2. The automatic lighting of a vehicle light according to claim 1, wherein the traveling distance after the turning-off signal is inputted is measured by integrating the pulse output from the vehicle speed pulse sensor mounted in the axle or the mission. apparatus.