JPH04133833A - Car lighting device - Google Patents

Abstract

PURPOSE:To clear the distance between his car and the following other cars and their relative speed to prevent them from being collided at night by providing an under light for lighting the ground surface under a car body onto the underside of the car body so that the presence and position of his car can e recognized by the other cars. CONSTITUTION:On roads at night where multiple cars including his car 1 are travellig, the brightness around his car 1 is detected by means of a brightness detector 4 when illuminance lowers below 1001x for long time at which general road flood lights are lit. Also, presence or absence of the following cars is detected by means of a following car detector 5 when the car-to-car distance becomes below a limit for safety. a car under light 3 is lit and controlled by a lighting controller 6 which receives the signals from the brightness detector 4 and the following car detector 5. By this method, the characteristics of acute angle to the ground surface 2 and the illumination from the front to the rear of the car body are given to the light distribution 7 of the car under light 3 to provide the driver of the following car with the brightness of the ground surface under his car efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention 1. L Particularly related to automobile lighting devices that illuminate the road surface below the automobile garage.

Jumi's technology Automobile TTR car Genka I, T, Front claw 1 fire 1 Mi, Shinbaku light, Katanasashi Kobuki JIV, I'l, brake light, reverse light, etc. is the only lamp in automotive lighting.
It serves as a light and has the function of
Lights are used to ensure visibility of objects and obstacles in front of the vehicle (in front of the vehicle), and other vehicle lights are used to prevent the vehicle from changing course or stopping.・The main function is as a sign to let pedestrians and other motorists know that you are reversing.In the past, it was used to prevent rear-end collisions from following cars. Looking at the current state of traffic accidents, there are many accidents involving rear-end collisions with parked vehicles, rear-end collisions with vehicles in front that have decelerated, etc.The causes of these accidents are: not paying attention to the road ahead, incorrect following distance, and incorrect handling of distance intervals.
Problems to be Solved by the Invention Even though such problems have been reported, when several cars are driving on a road at night, it is difficult to judge the distance between the vehicle in front and the own vehicle using only the taillights (i). A special problem with this problem is that when the preceding vehicle is a regular car and a truck, the taillights of the truck are higher than those of the regular car.
The driver of the following vehicle is given the illusion that the preceding vehicle is located far away.

This is not an extreme example. Only the taillights of the vehicle in front make it difficult to judge where the vehicle in front is on the road, and it is difficult to judge the distance and relative speed between the vehicle and the vehicle in front. In addition, when illuminating the vehicle in front with its headlights, ensuring a safe distance between vehicles, especially when driving at high speeds, it is difficult to illuminate the road below the vehicle in front, making it difficult to see where the vehicle in front is on the road. In other words, it is difficult to accurately judge the following distance and relative speed to the vehicle in front.Safe Following DistanceNow, considering safety, the safe following distance is equal to the safe stopping distance for the speed of the own vehicle. Then, the safe following distance for each speed is as shown in the table. When driving at a speed of 40km/h or more while maintaining a safe stopping distance, the visibility distance is 4.
It is impossible to sufficiently illuminate the vehicle in front with downward beam headlights whose design guideline is 0m.
1g is the angle of incidence of the light ray on the road surface, and 19 is the reflection rate of the light ray in each direction. The road surface has semi-diffuse and semi-mirror reflective characteristics, and most of the 18 light rays incident on the road surface at a certain angle of incidence are reflected in the opposite direction to the incident light, meaning that most of the headlight beam is will not be reflected back to the driver on the side shining the headlight. In general, when irradiating with a downward beam, the road surface at a distance of 20 meters or more becomes dark, and headlights are inefficient in the sense of brightly illuminating the road surface below the vehicle in front. Means for solving the problem (1) The device is characterized by providing a downward light that illuminates the road surface under the vehicle body so as to indicate the location of the own vehicle to other vehicles. Tosumo (2) is characterized by the installation of downward lights that illuminate the road surface near the tires of the own vehicle and make the tires of the own vehicle appear silhouetted against the background road surface to the driver of a following vehicle.

(3) The main light distribution is in an acute angle direction with respect to the road surface, and is characterized by providing a downward light that irradiates from the front to the rear of the vehicle body. (4) In addition to the lower part of the vehicle body, at least The present invention is characterized in that a downward light is provided to illuminate the road surface of 1 m on either side of the vehicle body.

(5) a brightness detection unit that detects the brightness around the vehicle;
(6) A following vehicle detection section that detects the presence or absence of a vehicle following the host vehicle, and a lighting control section that controls the downward lights based on a signal from the brightness detection section. (1) The presence and location of the vehicle's own weight on the road is clearly indicated on the extraction. By illuminating the front part of the road with an automobile light, the presence and location of the own vehicle on the road 1 will be notified to the driver of the other vehicle. Long-distance voyage, ζ people, speed J31! 1-4 (2) By illuminating your own vehicle, especially in the evening and near the beginning, with the automatic Φ゛1-゛ direction lights. The presence of a vehicle on the road ↓ "3" and the location of the vehicle are made known to the following vehicle, and the distance between the vehicle and the vehicle following the vehicle can be easily determined by the sound of driving. To obtain the preventive safety effect of preventing rear-end collisions of one's own vehicle with minimal lighting.

(3) Is the main light distribution of the automatic downhill light directed toward the road surface? ′, −
It is in an acute angle direction, or -λ From the front of the car body to the rear knob...\
4) The body width of Auto II is -eJ9. i, ml. 7
= 2. 3 m.

The width of the roadway is generally 3-3.7m. 1, that is, the minimum width is 4", and the maximum width is 7F.
When driving, illuminate at least 1 m of the road surface on the left side around the vehicle (1. of the road surface... ~
N2. ...-Rika irradiation is possible ^ 1-1 5, therefore,
L/-:... position 1↑+8 sandwiched between lanes ζζ. As you read the change, it becomes a change.

(5) By detecting the brightness around the vehicle [4. Automatically turns on the ψ F direction lights according to the brightness of the surroundings], the lighting operation is simplified and unnecessary. This reduces power loss during time and compression.

(6) Detecting the presence of a following vehicle 1. Depending on the presence of the following vehicle,
Automatically turns on the car lights, turns off the moon, and simplifies the operation of blinking 7, and reduces power loss when not in use 4)
It's true.

Embodiment FIG. 1 shows a configuration diagram of an embodiment of the present invention. In FIG. 4 is a brightness detection unit that detects the brightness around the vehicle (5 is a trailing vehicle 1 detection unit that detects the presence or absence of a vehicle following the vehicle).

6 is a lighting control Gll boat that controls the lighting of automobile tonneau lights (7
The main light distribution is engraved on the road surface of 2. It is at an acute angle, and the
Due to the light distribution of the toll light for the vehicle, which is illuminated from the front to the rear of the vehicle body, the vehicle 1 is now on a road at night when multiple automatic garages, including the vehicle 1, are driving at The brightness detection unit uses a photosensor to detect the brightness of the surrounding area.The illuminance at which general road lighting is turned on is 2.1001 Detects when the X is left open for a long time. Detection may be linked to the lower blade light's lighting control with the light switch/I.
Roughly speaking, the following vehicle detection section 5 using an inter-vehicle distance sensor does not detect the presence of a following vehicle traveling behind when the inter-vehicle distance falls below the safe inter-vehicle distance. Even though the lighting control unit 6 receives No. 43 from the following vehicle detection unit 5 and controls the lighting of the IC-, automatic heavy-duty toca light 3, the main light distribution to the automobile tonneau 34 as shown in 8. Road surface 2
(7) To provide a distribution characteristic that is in an acute angle direction and irradiates from the front of the vehicle body to the rear knob. Sao 1
Figure 2 shows the road view of your vehicle as seen from the following vehicle when there are no toll lights! , there are 2 figures, 9 in figure 2 is self &
io is the same as the tail light of the vehicle of 9 and the trailing road.

On roads without adequate road lighting, only the taillights of the vehicle mentioned above (11) stand out in the dark visual environment.From the perspective of the following vehicle, it is the opposite of the autonomous vehicle described in (1) above. Difficult to grasp the position on the surface 1 Figure 3 is a diagram of the road name of the own vehicle 7 seen from the connected position 6 where the car light is located, and 12 in Figure J is the white 1
1 and 13 are the roads on which the self-vehicle of 12 and the following two cars are traveling; 14 is the range of the name plate of the automatic heavy vehicle irradiated by the downward illumination for automatic garages according to the present invention; 15 is the name plate of the vehicle 16 is the lane mark on the road surface. Not only does the taillight of the own vehicle 11 stand out in the visual field, but also the road surface in the range 14 immediately below the own vehicle 12 is brightly illuminated when viewed from the following vehicle. By illuminating the area of the road surface to the side of the vehicle 12 that makes it difficult to determine the location, lane marks up to lane mark 16 become visible, making the position of the vehicle 12 on the road even clearer. In addition, the present invention has the following effects: (1) Provides sufficient road surface brightness below the own vehicle; Unlike the current situation where only taillights are used, it is possible to clearly indicate the position of the own vehicle on the road to the driver of the following vehicle.
The relative speed between your vehicle and the following vehicle becomes clear, which contributes to the prevention and safety of car collisions at night. (2) By illuminating the vicinity of your vehicle's tires, the driver of the following vehicle can clearly see the relative speed. It is now possible to see the silhouette of your car's tires and determine the position of your car on the road with minimal lighting.
(3) The main light distribution below is at an acute angle to the road surface, and the light is emitted from the front to the rear of the vehicle, making use of the specular reflection characteristics of the road surface. It is possible to efficiently increase the brightness of the road surface as seen from the position of the driver of the following vehicle. (5) In the case of two-way traffic, it is possible to more clearly indicate the position of the vehicle. It becomes possible to indicate the position of the own vehicle as a sign other than a light, and it also becomes possible to contribute to safety when passing each other in traffic.

(6) It can contribute to improving the beauty of the car body as nighttime illumination of the car, and it can help differentiate it from other cars and improve its marketability. (7) It can detect the brightness around the car. By controlling the lighting of automobile downward lights,
Although it is possible to reduce the hassle of controlling the lighting of the downward lights for automobiles, (8) The downward lights of the own vehicle cannot be visually checked by the driver himself while driving. , it is also effective as a fail-safe mechanism in such situations. (9) It detects whether there is a vehicle following the vehicle and is able to detect the presence or absence of a vehicle following the vehicle. The downward lights turn on when a car is present, but this makes it possible to control the lighting by determining when the vehicle is the only one on the road and the downward lights are not needed. (10) The distance between the following vehicles is The lamp lights up when the safety setting is exceeded.It also serves as a warning sign for following vehicles.

[Brief explanation of the drawing]

FIG. 1 shows the components of an automobile lighting system according to an embodiment of the present invention.
Figures 2 and 3 are illustrations of the same embodiment. Figure 4 is an explanatory diagram of the reflection characteristics of the road surface.
・Automotive downward lighting, 4. Brightness detection 5. Following vehicle detection 6. Lighting control clothing 7. Automobile downward lighting distribution 9. Own vehicle 10. Road ffi 11.. tail light,
12. Own vehicle 13. Road doctor 14. Lower road of the vehicle illuminated by the lower vehicle illumination light 15. Side road of the own vehicle further illuminated by the lower vehicle illumination light ii 16.
・Lane Mar Hisashi I7・・Route presentation 18・・Incidence of light rays 19・・Reflection of light rays Name of agent Akira Okaji, patent attorney, and 2 other people

Claims (6)

[Claims] (1) An automobile lighting device that is installed at the lower part of the vehicle body and includes a downward light that illuminates the road surface under the vehicle body so that the presence and location of the vehicle can be confirmed to other vehicles. (2) A lighting device for a car that is installed at the bottom of the car body and includes a downward light that illuminates the road surface near the tires of the car and allows drivers of following cars to see the tires of the car as silhouettes against the background road surface. . (3) The automobile lighting device according to claim 1 or 2, wherein the main light distribution of the downward illumination lamp is in an acute angle direction with respect to the road surface, and is irradiated from the front to the rear of the vehicle body. (4) Claims 1 and 2 characterized in that a downward light is provided that illuminates a road surface of at least 1 m on the left and right sides of the vehicle body.
or the automobile lighting device described in 3. (5) a brightness detection unit that detects the brightness around the vehicle;
Claims 1 and 2, further comprising a lighting control unit that controls lighting of a lower light based on a signal from the brightness detection unit.
, 3 or 4. The automobile lighting device according to . (6) a following vehicle detection unit that detects the presence or absence of a vehicle following the host vehicle;
Claims 1 and 2, further comprising a lighting control unit that controls lighting of a downward light based on a signal from the following vehicle detection unit.
, 3, 4 or 5 above.