JPH0249158Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automobile instrument panel dimming device that can illuminate an automobile instrument panel with desired brightness and color.

[Prior Art] Conventionally, this type of automobile instrument panel dimmer has not existed, and conventional automobile instrument panels are illuminated with illumination light in predetermined colors, such as orange or green. It had been.

[Problems to be Solved by the Invention] However, the color of the illumination light on the instrument panel changes depending on, for example, the driver's mental state while driving. For example, if a driver feels stressed or nervous due to long hours of driving or traffic jams, lighting with calming green colors is more appropriate than lighting with orange colors. If visibility is important, lighting with an orange color is suitable. However, as described above, conventionally, the color of the illumination light is fixed, and the driver cannot select the color of the illumination light on the instrument panel.

[Means for Solving the Problems] This invention was made by focusing on the above-mentioned problems, and includes a plurality of illumination lights each of which is attached to an instrument panel and each emits illumination light of a different color; It is an object of the present invention to provide a novel automobile instrument panel dimmer including a number of dimmers corresponding to the number of illumination lights connected to each of the illumination lights.

[Function] The automobile instrument panel dimmer comprising the above-mentioned means is capable of illuminating the instrument panel with a desired brightness and color by separately controlling the luminance of each illumination light with each of the dimmers. can.

[First Embodiment] A first embodiment of an automobile instrument panel dimmer according to the present invention will be described based on FIGS. 1 and 3 attached to the specification.

FIG. 1 is an electrical circuit diagram showing a first embodiment of the present invention, and FIG. 3 shows knobs 4a, 4a, 4a, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b and 4b, each knob 4a is used to variably operate the variable resistors 4, 6 and 8 shown in FIG.
FIG. 6 is a perspective view showing the structures of 6a and 8a. In the figure, 1 is a DC power supply, and 2 is a lighting switch.

Further, 3a, 3b, 3c and 3d are first illumination lights having, for example, red illumination light; 5a, 5b, 5c;
and 5d are second illumination lights having, for example, green illumination light; 7a, 7b, 7c, and 7d are third illumination lights having, for example, blue illumination light, and are mounted on an instrument panel (not shown) of an automobile. There is.

Furthermore, 4, 6 and 8 are variable resistors forming a first dimmer, a second dimmer and a third dimmer, respectively. The respective variable resistors 4, 6, and 8 are arranged so that the resistance values of the respective knobs 4a, 6a, and 8a can be individually varied by rotating the respective knobs 4a, 6a, and 8a shown in FIG.
and 8a, respectively.

One end portion of each of the variable resistors 4, 6 and 8 is connected to the first lighting lamps 3a to 3d, respectively.
Second illumination lights 5a to 5d, and third illumination lights 7a to 7
connected to d.

Next, the operation of the first embodiment having the above configuration will be explained.

For example, when the illumination light switch 2 is turned on at night, the first illumination lights 3a to 3d, the second illumination lights 5a to 5d, and the third illumination lights 7a to 7d are turned on all at once.

For example, by rotating the knob 4a to the right or left as shown in FIG.
The brightness of 3d is varied according to the resistance value. This brightness can vary over a wide range from zero to a fully lit value.

Similarly, by individually rotating the knobs 6a and 8a, the resistance values of the variable resistors 6 and 8 can be individually varied, and the second illumination lights 5a to 5d having green illumination light
The third illumination light 7a has a luminance of , and blue illumination light.
~7d brightness is individually varied.

Then, by varying the resistance values of the variable resistors 4, 6, and 8, the brightness of the first illumination lights 3a to 3d, the second illumination lights 5a to 5d, and the third illumination lights 7a to 7d is maintained at the same level. When the light is dimmed, the red, green, and blue illumination lights are combined at the same level, and the instrument panel is illuminated in white.

Further, only the resistance value of the variable resistor 6 is varied, and the second illumination lights 5a to 5d have green illumination light.
When the brightness is reduced to zero level, the red and blue illumination lights are combined, and the instrument panel is illuminated with an orange color.

Further, a first illumination lamp 3a that changes only the resistance values of the variable resistors 4 and 8 and has red illumination light.
~3d, and a third illumination light 7 having blue illumination light
When the brightness of a to 7d is reduced to zero level, the instrument panel will be illuminated with a green color.

Further, by arbitrarily rotating the knobs 4a, 6a, and 8a, the resistance values of the variable resistors 4, 6, and 8 are varied, and the instrument panel is illuminated with desired brightness and color. be able to.

[Second Embodiment] Next, a second embodiment of the automobile instrument panel dimmer according to the present invention will be described based on FIG. 2 attached to the specification.

The second embodiment shows an embodiment in which light is controlled by a so-called duty ratio based on the ratio of on time and off time of an oscillation signal.

In FIG. 2, those with the same symbols as those shown in FIG.
First illumination lights 3a to 3d and second illumination light 5a of the embodiment
5d and the third illumination lights 7a to 7d, detailed explanation will be omitted.

In FIG. 2, numeral 9 is an oscillator composed of a multivibrator or the like, which derives a triangular wave pulse of, for example, 100 [Hz].

Moreover, 10a, 10b, 10c are the first, second,
A third differential amplifier, one input side is connected to the output side of the oscillator 9, the other input side is connected to the variable resistors 4, 6 and 8, and the output side is connected to the resistors 12a, 12b and 12c, respectively. The first, second and third power transistors 11a, 11 in the subsequent stage via
b, and 11c.

Specifically, the first, second, and third differential amplifiers 10a, 10b, and 10c constitute a voltage dividing circuit by connecting with the variable resistors 4, 6, and 8, and the reference voltage is Each of them has a built-in resistance (not shown). and the first, second, and third
Every time the level of the triangular wave pulse input to one input side of the differential amplifiers 10a, 10b, 10c exceeds the reference voltage set by the variable resistors 4, 6, and 8, the level on the output side changes. The output signal is configured to be inverted to 0" or 1 level.
Therefore, the first, second and third differential amplifiers 10a,
10b and 10c transmit a pulse signal having a duty ratio corresponding to the resistance value of each of the variable resistors 4, 6, and 8 to the first, second, and third power transistors 11 in the subsequent stage.
a, 11b, and 11c.

Furthermore, the collectors of the first, second, and third power transistors 11a, 11b, and 11c are connected to a first illumination lamp 3 having a red illumination light, a second illumination lamp 5 having a green illumination light, and a blue illumination light, respectively. It is connected to a third illumination light 7 having illumination light.

As a result, the first, second, and third illumination lights 3,
5 and 7 are the first, second and third differential amplifiers 10;
A, 10b, and 10c are individually dimmed according to the duty ratio of the pulse signal derived.

Note that the variable resistor 4 and the first differential amplifier 1 described above
0a, resistor 12a and first power transistor 1
A first dimmer is configured by the combination of 1a,
Similarly, the second and third harmonics are controlled by each combination of variable resistors 6 and 8, second and third differential amplifiers 10b and 10c, resistors 12b and 12c, and second and third power transistors 11b and 11c. Each light device is configured.

Next, the operation of the second embodiment having the above configuration will be explained.

The operation of the second embodiment is generally the same as that of the first embodiment, except that the first, second, and third illumination lights 3, 5, and 7 are dimmed according to the duty ratio of the pulse signal. It is.

Then, the knobs 4a, 6a, as shown in FIG.
By rotating 8a, the resistance values of variable resistors 4, 6, and 8 can be varied, and the first, second, and third differential amplifiers 1
0a, 10b, 10c are the variable resistors 4, 6,
A pulse signal with a duty ratio controlled according to the resistance value of 8 is derived.

and the first, second, and third illumination lights 3, 5,
When each brightness of 7 is adjusted to the same degree according to the duty ratio of the pulse signal, red, green, and blue illumination lights are combined at the same level, and the instrument panel is illuminated in white. .

Further, only the duty ratio of the pulse signal derived by the second differential amplifier 10b is controlled to 0 [%],
When the brightness of the second illumination lamp 5 having green illumination light is reduced to zero level, the red and blue illumination lights are combined and the instrument panel is illuminated with an orange color.

Furthermore, the first, second, third, and differential amplifiers 10
By individually adjusting the duty ratio of each pulse signal derived by a, 10b, and 10c, the instrument panel can be illuminated with a desired brightness and color.

In each of the above embodiments, the number of dimmers is arranged according to the number of illumination lights, but by interposing different rotary switches and selection switches, each dimmer can be used to produce different colors. It is also possible to control the color of the brightness of the instrument panel by switching on and off a plurality of illumination lights with illumination light.

Further, in each of the above embodiments, the color of the illumination light of each illumination lamp is exemplified as the three primary colors of red, green, and blue, but it is not limited to this. It may be composed of two groups of illumination lights.

The point is that the driver can select the color of the instrument panel illumination lights by separately controlling the brightness of a plurality of illumination lights having different colors of illumination light.

[Effect of the invention] Since the automobile instrument panel dimmer according to the present invention has the configuration and function described above, it is possible to adjust the brightness of the illumination lights installed on the instrument panel and the illumination light of each color according to the driver's preference. Having profits that can be controlled.

In addition, it can be configured with a simple electronic circuit and has excellent manufacturability and mass production.

In addition, it contributes to the color harmony in the vehicle interior, and
By changing the color of the instrument panel illumination light according to the driver's mental state while driving, driver fatigue can be reduced, and this has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram showing a first embodiment of an automobile instrument panel dimmer according to the present invention, and FIG. 2 is an electric circuit diagram showing a second embodiment of an automobile instrument panel dimmer according to the present invention. 3 are perspective views showing the structure of a knob for operating a variable resistor. 2...Lighting light switch, 3, 3a, 3b, 3
c, 3d...first illumination light having red illumination light;
5,, 5a, 5b, 5c, 5d...Second illumination light having green illumination light, 7, 7a, 7b, 7c, 7
d...Third illumination light having blue illumination light, 4,
6, 8...variable resistor, 9...oscillator.

Claims (1)

[Scope of utility model registration request] A plurality of illumination lights mounted on an instrument panel and each having a different color of illumination light, and a number of dimmers corresponding to the illumination lights individually connected to each of the illumination lights, and each of the dimmers 1. An automotive instrument panel dimming device, characterized in that the instrument panel is illuminated with a desired brightness and color by separately controlling the luminance of each of the illumination lights using a device.