JPH0328037A - Car-interior illumination device - Google Patents

Abstract

PURPOSE:To enhance the safety by controlling the illumination of a step light, foot light, and seat light so that the brightness of the seat surfaces sensed by applicable sensors is higher than the brightness of the floor surface and that it is higher than the brightness of the road surface. CONSTITUTION:When a door 14 is opened, the brightness of a seat 13 surface is sensed by No.1 sensor 4, the brightness of the floor surface 21 by No.2 sensor, and the brightness of the road surface 11 by No.3 sensor 6. On the basis of signals given by these sensors 4-6, a lighting calculation circuit controls the illuminance of a step light 3 at the bottom of the door 14 and a foot light 2, and a seat light 1 at the ceiling so that the brightness of the seat 13 surface is higher than the brightness of the floor surface 12 and that the brightness of the road surface 11 is higher than the brightness of the floor surface 12. This should enhance the safety and passenger leading effect for his getting on or out.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a vehicle interior lighting device for a passenger car or the like.

[Conventional technology]

In general, when getting off a moving object such as a passenger car when the surroundings are dark, such as at night, it is possible to quickly check the safety of the road surface and get off the moving object smoothly. It is important to ensure that

On the other hand, it is known that if there is a place that is sufficiently brighter than the surrounding area, it has the effect of attracting attention by making it easier to fix the line of sight in that direction (for example, the Illuminating Engineering Society of Japan, Basic Research on the Visibility of Guide Lights, Research Report (1984). This effect is put to practical use in general indoor and outdoor lighting.

[Problem to be solved by the invention]

However, with conventional passenger car interior lighting, no matter which door is opened, interior lights such as ceiling lights turn on in conjunction with the opening of the door, illuminating the entire interior of the vehicle uniformly. There was no consideration given to safety or the inducing effect of speeding up action.

Therefore, according to the present invention, in view of the conventional example, it is possible to quickly confirm the safety of the road surface when getting off the vehicle, and
It is an object of the present invention to provide a lighting device that has the effect of guiding people in the direction of getting off the vehicle.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention detects the seat surface brightness closest to the opened door using a first sensor, the floor surface brightness from a second sensor, and the road surface brightness from a third sensor when each door is opened. The arithmetic unit detects the brightness of the floor surface,
The seat lights, footlights, and step lights are controlled so that the road surface brightness is brighter than the floor surface brightness.

[For production]

With the above-described configuration, the present invention not only makes it easy to confirm safety and improves safety by brightly illuminating the road surface and floor surface, but also illuminates the road surface most brightly, then the floor surface, and then the seats that are seated. When the surface is brightly illuminated, the lighting provides a guiding effect, making it easier to get off the vehicle.
Moreover, in addition to illuminating the necessary area with sufficient brightness, the area of the door that is not open, which was previously illuminated in the same way as the open door, is not illuminated. improved economic efficiency.

〔Example〕

In Figures 1 and 2, l is a seat light, 2 is a footlight,
3 is a step light, 4 is a first sensor, 5 is a second sensor, 6
is a third sensor, 7 is an arithmetic circuit, 8 is a blinking circuit, 9 is a switch, and IO is a power supply.

The operation of the vehicle interior lighting device of this embodiment constructed as described above will be described below. A seat light 1 that illuminates the 3 sides of the seat, a foot light 2 that illuminates the floor 12, and a road surface 1.
The brightness of the seat 13 is detected by the second sensor 4, the brightness of the floor surface l2 is detected by the second sensor 5, and the brightness of the road surface 11 is detected by the third sensor 6. The arithmetic circuit 7 is arranged so that the brightness of the floor surface 12 is brighter than the brightness of the seat 13 and the brightness of the road surface 11 is brighter than the brightness of the floor surface 12.
When the door 14 is opened, each light 1.2 is turned on.
．． Power is supplied from a power supply 10 to a flashing circuit 8 connected to a switch 9 which is turned on and off in conjunction so that the lamp 3 is turned on and turned off when the lamp is closed.

As a result, in response to a well-known open signal (not shown) provided on the door 14, the road surface 11 near the opened door 14 is illuminated by the stethoscope light 3, and the floor surface 12 near the opened door 14 is illuminated.
The seat 13 near the opened door 14 is illuminated by the footlight 2.
The surface is illuminated by the seat light 1 so that the floor surface 12 is brighter than the seat surface 13, and the road surface 1l is brighter than the floor surface 12. Here, the floor surface 12 is higher than the seat surface 13, and the road surface 1 is higher than the floor surface l2.
The road surface 1, which is the visual object, is set so that 1 is bright.
This is to make the path 11 brighter enough to increase the attractiveness of the path 11. Moreover, by illuminating only the vicinity of the opened door 14, unnecessary parts where the door l4 is not opened are not illuminated, thereby increasing economic efficiency.

The luminance of the light emitting surface of the step light 3 is set to 2000 cd/d or less in order to prevent unpleasant glare when viewed directly. Here, the luminance of the light emitting surface of step light 3 is set to 20
The value of 00 cd/n or less was set based on the brightness limit that does not cause unpleasant glare when directly looking at the light source.

〔Effect of the invention〕

As described above, according to the present invention, vehicle interior lighting with a guiding effect and safety can be easily obtained, and its practical effects are great.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the vehicle interior lighting device of the present invention;
FIG. 2 is a block diagram of the vehicle interior lighting device of the present invention. 1... Seat light, 2... Footlight, 3...
...Step light, 4...First sensor, 5.
...Second sensor, 6...Third sensor, 7
......Arithmetic circuit, 8...Blinking circuit, 9.
...Switch, 10...Power supply, 1l...
- Middle road surface, l2...floor, 13...seat, l4...door.

Claims (1)

[Claims] Step lights that illuminate the road surface, foot lights that illuminate the floor of the vehicle interior, and seat lights that illuminate the seat surface, and these lights are linked so that they are turned on when each door is opened and turned off when they are closed. a flashing circuit; a first sensor that detects seat surface brightness;
It consists of a second sensor that detects floor brightness, a third sensor that detects road brightness, and an arithmetic circuit. A vehicle interior lighting device characterized by controlled lighting.