JPH0580880U - Automatic lighting system for automobile lights - Google Patents

Abstract

(57) [Abstract] [Purpose] In the conventional automatic lighting system, the lighting equipment will turn off when it takes time to pass under illumination such as during nighttime traffic congestion. There was a sense of discomfort because the lights were not turned off immediately when passing through the tunnel. [Construction] According to the present invention, the automatic lighting apparatus 1 has a vehicle 2
The traveling sensor 4 for measuring the traveling distance of 0 is provided, and the turning-off operation is detected by the output from the illuminance sensor 2 that the ambient illuminance has reached the specified normal extinguishing level Q and after reaching the normal extinguishing level Q in advance. Since the light is turned off when the travel of the first travel distance T set to 1 is detected by the output of the travel sensor 4, the lighting device 10 is used even when passing under the road lighting during the nighttime traffic jam. Is prevented from being extinguished, and the extinction control is performed when the output of the illuminance sensor 2 exceeds the high illuminance extinguishing level R that is set higher than the normal extinguishing level Q. Make it possible to solve problems.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic lighting / extinguishing device for an automobile light, which automatically turns on / off a light according to the ambient illuminance.

[0002]

[Prior Art]

 FIG. 3 shows an example of the configuration of a conventional automatic lighting apparatus 90 of this type. Illuminance sensor 91 is arranged on the upper surface of dashboard 21 in the interior of vehicle 20 to provide illumination around vehicle 20. The measured value is compared with the lighting level and the extinguishing level set in the control unit 92, and when the ambient illuminance is lower than the lighting level, the lighting device 10 such as a headlight or a small light is turned on. The lamp 10 is turned on, and the lamp 10 is turned off when a measured value exceeding the extinction level is detected from this state.

[0003]

[Problems to be solved by the device]

 However, in the configuration of the above-described conventional automatic lighting / extinguishing device 90, there is a problem that the lighting is turned off in a place where high-luminance illumination is performed, for example, under a street light at night. To solve this problem, for example, A configuration has been proposed in which there is a grace period until the light is turned off after the light-off level is detected by a timer, but in this case, when traveling under high-illumination lighting for a short time, Although effective, there was a problem in that the lights would still be turned off if the time of staying under high illumination such as during a traffic jam became long, and the solution to this problem was a problem.

[0004]

[Means for Solving the Problems]

 As a concrete means for solving the above-mentioned conventional problems, the present invention is directed to an automotive light that uses an illuminance sensor for measuring the illuminance around the vehicle as a main input and automatically turns on and off the lighting device according to the ambient illuminance. In the automatic turn-on / off device, the automatic turn-on / off device is equipped with a travel sensor that measures the distance traveled by the vehicle. Is detected continuously for a predetermined set time, and the traveling of a certain distance after reaching the normal extinguishing level is detected by the output of the traveling sensor or the output of the illuminance sensor. An automatic light-off device for a vehicle light, wherein the light-off control is performed at any time when a high-illumination light-off level set higher than the normal light-off level is exceeded. It is intended to solve the problem by providing.

[0005]

【Example】

 Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIG. 1 is an automatic lighting / extinguishing device for a vehicle light according to the present invention. The automatic lighting / unilluminating device 1 is basically provided on an upper surface of a dashboard 21 of an automobile 20, for example. This is similar to the conventional example in that the lighting device 10 is turned on and off by the control device 3 based on the output from the sensor 2. However, according to the present invention, the control device 3 includes, for example, rotation of the wheels 22. A traveling sensor 4 for measuring the number is provided, and it is said that the above-mentioned conventional problems are solved by taking the output from the traveling sensor 4 into consideration when performing the light-off control.

FIG. 2 shows the configuration of the control device 3 in more detail. The control device 3 corresponds to the illuminance output N from the illuminance sensor 2, and includes, for example, an A / D converter, a digital comparator and a timer. An illuminance comparison circuit 31 having the same configuration as that of the conventional example is provided, and an illuminance value holding circuit 32 such as a ROM is attached to the illuminance comparison circuit 31 to provide a lighting level value P and a normal extinction level value Q. In addition, the high illuminance turn-off level value R is held by the present invention.

Further, the control device 3 is provided with a distance comparison circuit 33 corresponding to the distance output S from the travel sensor 4 and is composed of, for example, a counter and a digital comparator, and the distance comparison circuit 33 has the illuminance. A distance value holding circuit 34 having the same structure as the value holding circuit 32 is attached to hold the first traveling distance T and the second traveling distance U, and the distance comparing circuit 33 outputs the distance comparing circuit 31 from the illuminance comparing circuit 31. The distance output S from the travel sensor 4 is measured based on the command, compared with the numerical values T and U held in the distance value holding circuit 34, and the result is output.

A first AND circuit 35 and a second AND circuit 36 are connected to the outputs of the illuminance comparison circuit 31 and the distance comparison circuit 33, and the outputs of these AND circuits 35 and 36 are the OR circuit 37 and a small output. The lighting device 10 is controlled via a driver circuit 38 for switching the headlights.

Next, the operation of the automatic lighting / extinguishing device 1 of the present invention having the above configuration will be described. First, the automobile 20 is in a running state at night, and therefore the illuminance output N from the illuminance sensor 2 once falls below the lighting level value P and the lighting device 10 is lit, and the illuminance output N remains at the time of explanation. The following description will be given on the assumption that the normal light-off level value is equal to or less than Q and the lighting is continued.

At this time, when the illuminance output N of the illuminance sensor 2 is detected to be a value equal to or higher than the normal extinction level value Q, the illuminance comparison circuit 31 makes a comparison with the illuminance value holding circuit 32 and produces an output at the terminal 31a. This output is transmitted to one input of the first AND circuit 35 and a signal is also transmitted to the distance comparison circuit 33 to activate it, and the measurement of the distance output S from the travel sensor 4 is started.

Immediately after the start of this measurement, no output is generated at the terminal 33a of the distance comparison circuit 33 connected to the other input of the first AND circuit 35, so that the first AND circuit No output is produced in the circuit 35, and therefore no output is produced in the OR circuit 37 or the driver circuit 38, and the lighting state of the lighting apparatus 10 is continued.

If the value of the distance output S from the travel sensor 4 measured by the distance comparison circuit 33 reaches the first traveling distance T when the vehicle 20 continues to travel in the above state, the distance comparison circuit 33 determines An output is generated at the terminal 33a, and if the illuminance output N from the illuminance sensor 2 at this time still has a value equal to or higher than the normal extinction level value Q still detected, an output is generated in the first AND circuit 35. Then, the light 10 is turned off.

Further, if the reason that the illuminance sensor 2 detects a value equal to or higher than the normal turn-off level value Q is that the illumination range is limited, such as road lighting, traveling of the first traveling distance T 1 At the time of the end, the illumination range is passed and the output from the illuminance comparison circuit 31 is not generated, so that no output is generated to the first AND circuit 35 and the light is not turned off. That is, by setting an appropriate value for the first traveling distance T, it is possible to prevent the lighting device 10 from being turned off for the brightness such as road lighting where the illumination range is limited. Become.

Here, since the present invention is to judge the passage under the road lighting or the like based on the traveling distance, when the stagnation time to the place where the partial lighting is performed becomes long due to traffic congestion, for example, Also, the light will not be turned off, and the driver will not feel uncomfortable.

In addition to the above, a high illuminance extinction level value R is set in the illuminance comparison circuit 31 of the control device 3 of the present invention, and the illuminance comparison circuit 31 outputs the illuminance output N of the illuminance sensor 2 to the high illuminance extinction level. When a value equal to or greater than the value R is detected, an output is generated at the terminal 31b and is directly input to the OR circuit 37, whereby the output from the terminal 31b is immediately transmitted to the lighting device 10 via the driver circuit 38. Turn off the light.

This operation is prepared, for example, when the vehicle passes through a tunnel during the daytime, and when the difference in illuminance when going out from a dark place to a bright place is greater than a predetermined value, the control device 3 causes the above daytime operation. The lighting device 10 is immediately turned off when it is determined that the vehicle is passing through the tunnel, and in such a case, the lighting device 10 is continuously turned on by the configuration in which the first traveling distance T described above is set, and the driver feels uncomfortable. Prevent giving.

Further, in the control device 3 of the present invention, the second traveling distance U is set in the distance comparison circuit 33, and the distance comparison circuit 33 makes the lighting level value P of the illuminance comparison circuit 31. It is also activated by the output of the terminal 31c due to the detection of the above to measure the traveling distance.

At this time, the terminal 33b of the distance comparison circuit 33 is assumed to generate an output immediately after being activated until the distance output S from the travel sensor 4 reaches the second travel distance U. It is applied to one input of the second AND circuit 36, and is connected to the other terminal of the second AND circuit 36 which is connected to the terminal 31b which outputs the fact that the normal extinction level value Q of the illuminance comparison circuit 31 is output. There is.

With such a configuration, the control device 3 causes the illuminance sensor 2 to have a value equal to or higher than the normal turn-off level value Q until the second traveling distance U immediately after the lighting device 10 is turned on. When it is detected, the light is turned off. For example, the false lighting that occurs when the illuminance sensor 2 is unintentionally shielded by baggage when riding is continued up to the first mileage T, and the driver feels uncomfortable. Prevent it from happening. Therefore, the distance set as the second travel distance U may be relatively short.

A reference numeral 39 in the drawing denotes a cancel mechanism composed of a cancel switch 39a and a resistor 39b. This cancel mechanism 39 is connected to, for example, the first AND circuit 35 when the cancel switch 39a is turned on. The terminal 33a of the connected distance comparison circuit 33 is forcibly output so that the distance comparison circuit 33 can be turned off freely according to the driver's request even before the first traveling distance T 1 is detected. For example, it may also be used as a lighting switch provided in an automobile.

Although not described, the illuminance comparison circuit 31 is provided with a timer or the like as described above, and when the illumination level value P is detected by the illuminance sensor 2, for example, the value can be maintained for a certain period of time. It is confirmed that the operation is started after that, and the certainty of the operation is ensured because it does not respond to the instantaneous fluctuation of the illuminance such as when passing through a tree shade.

[0022]

[Effect of the device]

 As described above, according to the present invention, the automatic lighting apparatus is provided with a traveling sensor for measuring the traveling distance of the vehicle, and the turning-off operation in the automatic lighting apparatus uses the output from the illuminance sensor to detect the ambient illuminance. Light is extinguished when it is detected that the specified normal extinguishing level has been reached, and when traveling of the preset first travel distance is detected by the output of the traveling sensor after reaching the normal extinguishing level. As a result, even when passing through a place where road lighting is performed at night, it is possible to prevent the lights from being turned off and to provide an excellent effect that does not cause the driver to feel uncomfortable.

Further, since the turning-off control is performed when the output of the illuminance sensor exceeds the high-illumination turning-off level which is set higher than the normal turning-off level, the turning-off control can be performed even during the tunnel passage during the daytime. This makes it possible to prevent the uncomfortable feeling described above, and makes the operation of the automatic lighting system even more realistic, thereby achieving an excellent effect in improving the practicality.

Furthermore, the automatic lighting device detects that the ambient illuminance has reached the specified lighting level based on the output from the illuminance sensor, and the illuminance sensor detects the normal light-off level from the time when lighting is performed. The mileage until the time is measured is measured by the output of the mileage sensor, and if the mileage is shorter than the preset second mileage, the extinguishing control is performed. By making it possible to deal with malfunctions such as blocking of the illuminance sensor, and by adding a cancel function for canceling the first mileage, it is possible to further improve the practicality.

[Brief description of drawings]

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

FIG. 2 is a logic circuit diagram showing the configuration of the same embodiment.

FIG. 3 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 1 ... Automatic turn-on / off device 2 ... Illuminance sensor 3 ... Control device 31 ... Illuminance comparison circuit 32 ... Illuminance value holding circuit 33 ... Distance comparison circuit 34 ... Distance value holding circuit 35 ... First AND circuit 36 ... Second AND circuit 37 ... OR circuit 38 ... Driver circuit 39 ... Cancellation mechanism 4 ... Travel sensor N ... Illuminance sensor output P ... Lighting level value Q ... Normal extinction level value R ... High illuminance turn-off level value S …… Running sensor output T …… First mileage U …… Second mileage 10 …… Lighting device 20 …… Car

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toru Tanabe 1937-28 Kanai-cho, Machida-shi, Tokyo (72) Author Seiya Miyokawa 3-5-8 Aioi, Sagamihara-shi, Kanagawa

Claims (3)

[Scope of utility model registration request] 1. An automatic lighting apparatus for a vehicle light, which uses an illuminance sensor for measuring illuminance around a vehicle as a main input, and automatically turns on and off a lighting device according to the ambient illuminance. The automatic light-off device is equipped with a travel sensor that measures the travel distance, and the output from the illuminance sensor detects that the ambient illuminance has reached the specified normal extinction level continuously for a predetermined set time. And when the traveling of the first traveling distance set in advance after reaching the normal extinction level is detected by the output of the traveling sensor, or the output of the illuminance sensor is set to be higher than the normal extinction level. An automatic lighting / extinguishing device for a vehicle light, wherein the turning-off control is performed at any time when the high illuminance turning-off level is exceeded. 2. The automatic light-on / off device detects that the ambient illuminance has reached a specified lighting level based on the output from the illuminance sensor, and the illuminance sensor detects the normal light-off level from the time when lighting is performed. 2. The light-out control is performed when the traveling distance until the time is reached is measured by the output of the traveling sensor and the traveling distance is shorter than a second traveling distance set in advance. An automatic lighting system for automobile lights. 3. The automatic lighting / extinguishing device is provided with a canceling mechanism capable of manually turning off even in a state before the traveling of the first traveling distance is detected by the output of the traveling sensor. The automatic lighting / extinguishing device for a vehicle light according to claim 1 or 2.