JP2003072463A - Lighting system in cabin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system in a cabin capable of changing an illumination color of a lighting fixture in a cabin to an easily-viewable color or a favorite color, and further changing the image in the cabin. SOLUTION: As illumination lamps in the cabin, a meter lamp 5 for lighting meters, a switch panel lamp 6 for lighting an air conditioner control device, foot lamps (foot light) 7 for lighting foot parts of a driver's seat and a front passenger seat, a ceiling spot lamp 8 mounted on a central part of a cabin ceiling not shown in Fig., an inside door handle lamp 9 mounted on an inside door handle part, and a door pocket lamp 10 mounted inside a door pocket are mounted. These lamps 5, 6, 7, 8, 9, 10 in the cabin are respectively provided with light emitting diodes (LED) emitting the lights of three primary colors, that is, red light, green light and blue light, and a color mixture ratio of three light emitting diodes is regulated by a rotary regulating knob 4. By regulating the chromaticity of each lamp 5,..., 10 in the cabin by the regulating knob 4, the color can be changed to the easily-viewable color or the favorite color.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interior lighting device capable of changing the colors of various lights in a vehicle compartment to a desired color or a color that is easy to see by simultaneously changing the colors of various lights in the vehicle compartment. It is about.

[0002]

2. Description of the Related Art Conventionally, the colors of lights such as various meters, various switches, indicators, in-vehicle lights, and foot lights in the passenger compartment of a vehicle are determined by the type of vehicle and fixed to one color.

[0003]

However, in such a vehicle interior lighting, the image of the vehicle interior is fixed by the illumination color, the visibility is deteriorated due to the change of the surrounding illuminance, and it is not suitable for the individual. There was a problem.

Therefore, according to the present invention, a color that is easy to see the illumination color,
An object of the present invention is to provide a vehicle interior lighting device that can be changed to a desired color and that can change the image of the vehicle interior.

[0005]

According to a first aspect of the present invention, there is provided a vehicle interior lighting device, wherein light sources of a plurality of colors are arranged at respective lights in a vehicle interior, and one switch or a variable resistor is adjusted. The color mixing ratio of the light sources of the plurality of colors is changed so that the color difference of the illumination colors is the same in each of the illuminations.

According to such a vehicle interior lighting device, by adjusting one switch or variable resistor, the chromaticity of each of the lights in the vehicle compartment changes all at once, and the illumination color is adjusted to a preferable color. You can

In this way, the vehicle interior lighting device can change the illumination color to an easy-to-see color or a favorite color and can change the image of the vehicle interior.

According to a second aspect of the present invention, in the vehicle interior lighting device, light sources of a plurality of colors are arranged for the respective lightings in the vehicle interior, and the light sources of the plurality of colors are arranged according to the ambient illuminance sensed by the illuminance sensor attached to the vehicle. The color mixing ratios of the light sources of a plurality of colors are automatically adjusted to change the color difference of the illumination colors in each of the illuminations.

According to such a vehicle interior illumination device, the chromaticity of each illumination in the vehicle interior is adjusted so that the color can be most easily seen from the ambient illuminance sensed by the illuminance sensor in accordance with the relative visibility of human beings. The illumination color can be adjusted to a preferable color by being automatically adjusted and changed in unison.

In this way, the vehicle interior lighting device can automatically change the illumination color to a color that is easy to see in accordance with the ambient illuminance.

A vehicle interior lighting device according to a third aspect of the present invention has the functions of the vehicle interior lighting device according to the first and second aspects, and sets the color mixing ratio of the light sources of the plurality of colors to the one switch or It is provided with a changeover switch for changing over between adjustment with a variable resistor and automatic adjustment.

Therefore, the color of each illumination is manually changed by the change-over switch, or the color of each illumination is automatically adjusted to the most visible color from the ambient illumination sensed by the illumination sensor. You can choose whether to do it.

In this way, the color of each illumination is changed to a desired color to change the image of the interior of the vehicle to a desired one, or the color of each illumination is set to have the best visibility depending on the ambient illuminance. The vehicle interior lighting device can be freely selected according to the purpose.

A vehicle interior lighting device according to a fourth aspect of the present invention is the vehicle interior illumination device according to any one of the first to third aspects, wherein the light sources of the plurality of colors are light emitting diodes (LEDs).

The LED is a light source that is small in size, has a high luminous efficiency, and can obtain bright light emission with a small current, and is therefore suitable as a light source for vehicle interior lighting. In addition, since it has a longer life than incandescent light bulbs, it can be replaced less frequently. Furthermore, since there are various emission colors available, a wide variety of illumination colors can be produced by combining a plurality of LEDs with different emission colors to change the color mixture ratio, so it is possible to adjust to the color desired by the user. it can.

According to a fifth aspect of the invention, in the vehicle interior lighting device according to any one of the first to fourth aspects, the light sources of the plurality of colors are LEDs of three primary colors of red, green and blue lights. There is something.

By arranging the LEDs of the three primary colors of red, green, and blue lights for each illumination in this way, it is possible to produce illumination colors of all colors, so that it is possible to meet any color requirement and to illuminate the interior of the vehicle. As an excellent one.

In this way, a vehicle interior lighting device that can meet any illumination color requirement and is excellent as vehicle interior lighting is provided.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

First Embodiment First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view schematically showing the front inside a vehicle compartment of an automobile. FIG. 2 shows the relative luminosity factor of the human eye, in which typical scotopic and photopic curves are drawn respectively.

As shown in FIG. 1, meters such as a speedometer, a tachometer, and a gasoline meter are arranged in front of the steering wheel (handle), and a meter illumination 5 for illuminating these meters is provided. . A rotary adjustment knob (volume) 4 for adjusting the chromaticity of all vehicle interior lighting is attached to the left side of the meters. A car navigation system, an air conditioner control device, a shift lever, etc. are arranged in a central portion in the front of the vehicle compartment, and a switch panel illumination 6 for illuminating the air conditioner control device is provided. Further, foot lighting 7 is provided at the feet of the driver's seat and the passenger seat.

Further, a ceiling spot lighting 8 is attached to a central portion of a vehicle compartment ceiling (not shown), and an inside door handle lighting 9 is provided to an inside door handle portion on the front right side (driver's seat side). ing. Similarly, inside door handle lights (not shown) are provided on the inside door handle portions of the other three doors. Further, a door pocket lighting 10 is provided inside the door pocket. Similarly, a door pocket illumination (not shown) is also provided inside the door pocket of the passenger seat.

Each of the lights 5, 6, 7, 8, in the passenger compartment
LEDs for emitting the three primary colors of red, green, and blue are respectively arranged as light sources on 9 and 10, and the color mixing ratio of the three LEDs is a control knob 4 as one switch.
It is adjusted by. In the first embodiment, when the adjusting knob 4 as one switch is rotated in the clockwise direction, the chromaticity of each of the lights 5, ..., 10 in the vehicle interior is red → green → blue → red → green →. It is configured to change. As a result, the driver can set the chromaticity of each of the lights 5, ... By doing so, the image of the passenger compartment can be freely changed.

Alternatively, it is possible to adjust the chromaticity to be the most visible, depending on the ambient illuminance. As shown in FIG. 2, human eyes have different colors that are easy to see in a dark place and a bright place. About 500 nm in scotopic vision indicated by broken line
The light of wavelength is most visible, and the colors that are easy to see are biased toward the blue side. On the other hand, in photopic vision indicated by the solid line, light with a wavelength of about 550 nm is most visible, and the color that is easy to see is biased toward the green side. Therefore, more comfortable driving can be performed by adjusting the adjusting knob 4 to adjust the chromaticity that is most visible according to the ambient illuminance.

In the first embodiment, the case where three LEDs for emitting the three primary colors of light are arranged as the light source for each of the illuminations 5, ..., 10 in the vehicle compartment has been described, but the present invention is not limited to this. LEDs of two colors of red and green, green and blue, or blue and red may be arranged, or two or four or more colors other than the three primary colors of light may be arranged.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a block diagram showing the overall configuration of the vehicle interior lighting device according to the second exemplary embodiment of the present invention.
As shown in FIG. 3, the vehicle interior lighting device 1 according to the second embodiment includes an auto / manual switch 2, an illuminance sensor 3 for measuring ambient brightness, and an adjusting knob similar to that of the first embodiment. It has (volume) 4. All the signals emitted from these are input to the control circuit 12, converted into color data in the control circuit 12, and then the LED drivers 13a, 13b, 13 of the respective lights 5, ...
It is input to c, .... In each of the lights 5, ..., 10 in the vehicle compartment, three LEDs that emit the three primary colors of red R, green G, and blue B are arranged as light sources, as in the first embodiment. LED color mixture ratio is LED driver 13
are controlled by a, 13b, 13c, ....

The vehicle interior lighting device 1 according to the second embodiment can be used in two ways by switching the auto / manual switch 2 as a switch. When the auto / manual switch 2 is switched to auto, the signal from the adjusting knob 4 is ignored and the signal from the illuminance sensor 3 is processed by the control circuit 12. That is, the control circuit 12 selects the most visible color according to the ambient illuminance measured by the illuminance sensor 3, and sets L of each of the lights 5, ..., 10 in the vehicle interior as color data.
It is input to the ED drivers 13a, 13b, 13c, .... As described above, as shown in FIG. 2, the chromaticity that is easy to see changes depending on the ambient illuminance, so the relationship between this illuminance and chromaticity is stored in the memory of the control circuit 12. Each LE
In the D drivers 13a, 13b, 13c, ..., The color mixing ratio of the LEDs of three colors is controlled according to this color data so that the chromaticity designated by the color data is obtained.
In this way, the auto / manual switch 2
When is switched to auto, each light 5, ...
10 is automatically adjusted to the most visible chromaticity according to the ambient illuminance measured by the illuminance sensor 3.

On the other hand, when the automatic / manual switch 2 is switched to manual, the signal from the illuminance sensor 3 is ignored and the signal from the adjusting knob 4 is input to the control circuit 12. From the control circuit 12, the color data corresponding to the chromaticity designated by the adjusting knob 4 is sent to the LED drivers 13a of the respective lights 5, ...
Are input to 13b, 13c, .... Each LED driver 1
In 3a, 13b, 13c, ..., The color mixing ratio of the LEDs of three colors is controlled according to this color data so that the chromaticity specified by the color data is obtained. In this way, when the automatic / manual switch 2 is switched to manual, each illuminator 5, ..., 10 in the vehicle compartment has a chromaticity corresponding to the adjustment knob 4 adjusted by the driver. The person adjusts the adjusting knob 4 according to his / her preference or more easily so that the lights 5, ...
The chromaticity of 10 can be changed.

As described above, in the vehicle interior lighting device 1 according to the second embodiment, each of the lights 5, ..., In the vehicle interior is manually operated by the automatic / manual switch 2.
The color of 10 is changed to a favorite color, or the color of each of the lights 5, ..., 10 in the vehicle interior is automatically adjusted to the most visible color from the ambient illuminance detected by the illuminance sensor 4. be able to. In this way, the color of each of the lights 5, ..., 10 in the vehicle interior is changed to a desired color to change the image of the interior of the vehicle to a desired color, or the color of each illumination is most visible depending on the ambient illuminance. The color can be selected or can be freely selected according to the purpose.

In each of the above-mentioned embodiments, LEDs of three colors of R, G and B of the three primary colors of light are used as a light source. You may use. Further, although the example in which the LED is used as the light source has been described, in addition to this, an incandescent light bulb covered with a color filter can be used as the light source.

The illuminance sensor 3 may be mounted anywhere inside or outside the vehicle, but is preferably mounted near the driver's seat. Furthermore, although the example in which the rotary knob is used as the adjusting knob 4 as one switch has been described,
A lever type that moves linearly can also be used. In particular, one switch shown in the above embodiment is
In the case of implementing the present invention, a clock pulse is introduced by a single switch operation to digitally change the value of a counter or a register, or a variable resistor such as a potentiometer is used to change the value in an analog manner. .

The configuration, shape, quantity, material, size, connection relationship and the like of the other parts of the vehicle interior lighting device are not limited to those in this embodiment.

[0033]

As described above, in the vehicle interior lighting device according to the invention of claim 1, light sources of a plurality of colors are arranged for each illumination in the vehicle interior, and one switch or a variable resistor is adjusted. Thus, the color mixture ratio of the light sources of the plurality of colors is changed so that the color difference of the illumination colors is the same in each of the illuminations.

According to such a vehicle interior lighting device, by adjusting one switch or variable resistor, the chromaticity of each of the lights in the vehicle interior changes simultaneously, and the illumination color is adjusted to a preferable color. You can

In this way, the vehicle interior lighting device can change the illumination color to a color that is easy to see and a favorite color and can change the image of the vehicle interior.

In the vehicle interior lighting device according to the invention of claim 2, light sources of a plurality of colors are arranged for each of the lights in the vehicle interior, and the light source is installed in accordance with the ambient illuminance sensed by the illuminance sensor attached to the vehicle. The color mixing ratios of the light sources of a plurality of colors are automatically adjusted to change the color difference of the illumination colors in each of the illuminations.

According to such a vehicle interior illumination device, the chromaticity of each illumination in the vehicle interior is adjusted so that the illuminance of the surroundings sensed by the illuminance sensor provides the most visible color in accordance with the human's relative visibility. The illumination color can be adjusted to a preferable color by being automatically adjusted and changed in unison.

In this way, the vehicle interior lighting device can automatically change the illumination color to a color that is easy to see in accordance with the ambient illuminance.

A vehicle interior lighting device according to a third aspect of the present invention has the functions of the vehicle interior illumination device according to the first and second aspects, and sets the color mixing ratio of the light sources of the plurality of colors to the one switch or It is provided with a changeover switch for changing over between adjustment with a variable resistor and automatic adjustment.

Therefore, the color of each illumination is manually changed by the change-over switch, or the color of each illumination is automatically adjusted to the most visible color from the ambient illuminance detected by the illuminance sensor. You can choose whether to do it.

In this way, the color of each illumination is changed to a desired color to change the image of the interior of the vehicle to a desired one, or the color of each illumination is set to have the best visibility depending on the ambient illuminance. The vehicle interior lighting device can be freely selected according to the purpose.

According to a fourth aspect of the present invention, in the vehicle interior lighting device according to any one of the first to third aspects, the light sources of the plurality of colors are light emitting diodes (LEDs).

In addition to the effect according to any one of claims 1 to 3, the LED is a light source that is small in size, has high luminous efficiency, and is capable of obtaining bright light emission with a small current. Suitable as In addition, since it has a longer life than incandescent light bulbs, it can be replaced less frequently. further,
Since various emission colors are available, a wide variety of illumination colors can be produced by combining a plurality of LEDs with different emission colors and changing the color mixture ratio, so that it is possible to adjust the color to the user's preference.

According to a fifth aspect of the present invention, in the vehicle interior lighting device according to any one of the first to fourth aspects, the light sources of the plurality of colors are LEDs of three primary colors of red, green and blue lights. There is something.

By arranging the LEDs of the three primary colors of red, green and blue lights for each illumination in this way, in addition to the effect according to any one of claims 1 to 4, illumination colors of all colors can be obtained. Since it can output any color, it can be an excellent vehicle interior lighting.
It is also possible to change the illumination color linearly from red to green to blue, and in this case, the color wavelength is from about 620 nm to about 4
It appears to change linearly up to 60 nm.

In this manner, the vehicle interior lighting device can meet any illumination color requirement and is excellent as vehicle interior illumination.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing the front of a vehicle interior of an automobile.

FIG. 2 shows the relative luminosity factor of the human eye, and is a diagram showing typical scotopic and photopic curves, respectively.

FIG. 3 is a block diagram showing an overall configuration of a vehicle interior lighting device according to a second exemplary embodiment of the present invention.

[Explanation of symbols]

1 Vehicle interior lighting device 2 changeover switch 3 Illuminance sensor 4 1 switch 5,6,7,8,9,10 Each lighting in the passenger compartment B, G, R Multiple color light sources (light emitting diodes)

Claims (5)

[Claims] 1. A light source of a plurality of colors is arranged in each lighting in a vehicle compartment, and a switch or a variable resistor is adjusted to change a color mixture ratio of the light sources of the plurality of colors, thereby changing the color mixing ratio of the light sources. A vehicle interior lighting device characterized in that the color difference of illumination colors is changed to be the same. 2. A light source of a plurality of colors is arranged for each lighting in the vehicle interior, and the color mixing ratio of the light sources of the plurality of colors is automatically adjusted according to the ambient illuminance sensed by an illuminance sensor attached to the vehicle. The vehicle interior lighting device is characterized in that it is adjusted so that the color difference of the illumination color becomes the same in each illumination. 3. The vehicle interior lighting device according to claim 1 or 2, further comprising the function of the interior lighting device, wherein the color mixture ratio of the light sources of the plurality of colors is adjusted by the one switch or the variable resistor or automatically adjusted. A vehicle interior lighting device, which is provided with a changeover switch for selecting whether to turn on or off. 4. The vehicle interior lighting device according to claim 1, wherein the light sources of the plurality of colors are light emitting diodes (LEDs). 5. The light source of the plurality of colors is an LED of three primary colors of red, green and blue lights.
The vehicle interior lighting device according to claim 4.