JPH0550602U - Variable color vehicle lighting - Google Patents

Abstract

(57) [Summary] [Purpose] In the conventional variable-color vehicle lighting that changes the lamp color from white to pale yellow by inserting a yellow filter into the optical path, the yellow filter is The luminosity of the vehicle lighting lamp is reduced by the transmittance, which causes a problem that the driver feels uncomfortable. [Configuration] In the optical path when white is set as the lamp color, the yellow filter 4 is replaced by the transmittance τ1 of the yellow filter 4.
Since it is the variable color vehicle illumination lamp 1 in which the correction filter 5 for improving the color rendering is inserted, which has the same transmittance τ2 as the above, it is assumed that there is no difference in luminous intensity even if the light colors are switched. It solves the problem.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to vehicle lighting such as headlamps and fog lamps, and more particularly to a vehicle lighting configuration in which the lighting color is variable in one light yellow and white. .

[0002]

[Prior Art]

 FIG. 3 shows an example of the configuration of a conventional variable color vehicle illumination lamp 90 of this type. In the optical path of the variable color vehicle illumination lamp 90, for example, a reflecting mirror 91 formed of a spheroidal surface and A yellow filter 93 is provided at an intermediate position with respect to the projection lens 92 so that the yellow filter 93 can be freely moved in and out. When a light yellow light color is required, the yellow filter 93 is provided in front of the reflecting mirror 91. When the white lamp color is required, the yellow filter 93 is retracted from the front surface of the reflecting mirror 91 to switch the lamp color.

[0003]

[Problems to be solved by the device]

 However, in the above-described conventional variable-color vehicle illumination lamp 90, when the lamp color is light yellow, the luminous intensity is reduced by the transmittance of the yellow filter 93, which reduces the visibility or the driving. There were problems such as giving people a feeling of discomfort, and the solution to this problem had become an issue.

[0004]

[Means for Solving the Problems]

 As a concrete means for solving the above-mentioned conventional problems, the present invention provides a variable color vehicular illuminating lamp having a structure in which a yellow filter is put in and out of an optical path to convert the light color into light yellow and white. In the optical path when the white color is set, a colorless or color-rendering correction filter having the same transmittance as the yellow filter is inserted in the optical path instead of the yellow filter. The conventional problem is solved by providing a variable-color vehicle illumination lamp so as not to cause a difference in luminous intensity due to switching of lamp colors.

[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 denotes a variable color vehicular lighting according to the present invention (hereinafter abbreviated as vehicular lighting 1), and a projection with a reflecting mirror 2 in the optical path of the vehicular lighting 1. A yellow filter 4 having a transmittance of τ1 is provided in the middle of the lens 3 so as to be freely inserted and removed, and a light yellow light color is obtained by inserting the yellow filter 4 in the optical path. It is similar to the one.

In the present invention, a correction filter 5 is adopted in addition to the yellow filter 4, and when the yellow filter 4 is retracted from the optical path, as shown in FIG. Instead of the yellow filter 4, it is supposed to be inserted in the above-mentioned optical path, that is, in the middle of the reflecting mirror 2 and the projection lens 3, whereby the vehicle illumination lamp 1 selects either a pale yellow color or a white color. Even in this case, either the yellow filter 4 or the correction filter 5 is inserted in the optical path.

Further, the correction filter 5 is called, for example, a neutral gray color or a smoke color, and a filter which does not cause any change in color to the light transmitted through the correction filter 5 is selected, and at the same time, the correction filter is selected. The filter 5 is set so that the transmittance τ2 is exactly equal to that of the yellow filter 4.

If necessary, instead of the neutral gray color described above in the correction filter 5, for example, a so-called daylight color filter is used to improve the color rendering properties closer to the color temperature of sunlight. The same may be adopted, and in this case as well, the transmittance τ2 of the correction filter 5 is set to be exactly equal to that of the yellow filter 4.

Next, the operation and effect of the vehicular illumination lamp 1 of the present invention having the above-described configuration will be described. Correction with the same transmittance as that of the yellow filter 4 inserted in the optical path when the light yellow color is used. Since the filter 5 is inserted in the optical path when the white color is used, the vehicular illumination lamp 1 has the same luminous intensity in any color.

This means that the driver's discomfort is eliminated, and at the same time, when the attenuation of the luminous intensity by the yellow filter 4 and the correction filter 5 is compensated by the output enhancement of the light source, only one of them exceeds the upper limit of the standard. No light is emitted, and both light yellow and white can be set to have a luminous intensity close to the specified upper limit.

[0011]

[Effect of the device]

 As described above, according to the present invention, when the lamp color is set to white, the yellow filter is replaced in the optical path and the same transmittance as that of the yellow filter is set. By using a variable color vehicle lighting with a filter inserted, there is an excellent effect that does not cause the driver to feel uncomfortable, eliminating the decrease in light intensity that occurs when the lighting color is switched from white to light yellow, which has been occurring in the past. In addition, it is possible to correct the attenuation amount by each filter by the light source without causing a problem that one exceeds the specified upper limit because both have the same luminous intensity. It also has an excellent effect on improving the performance of vehicle lighting.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a variable color vehicular illumination lamp according to the present invention in a state in which one lighting color is used.

FIG. 2 is a cross-sectional view showing the same embodiment with another lamp color switched to another lamp color.

FIG. 3 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 ... Variable color vehicle lighting 2 ... Reflecting mirror 3 ... Projection lens 4 ... Yellow filter 5 ... Correction filter τ1, τ2 ...... Transmittance

Claims (1)

[Scope of utility model registration request] 1. A variable color vehicular illumination lamp configured to convert a lamp color into a pale yellow and a white color by entering and exiting a yellow filter in the optical path, and in the optical path when the white color is set, An illumination lamp for a variable color vehicle, characterized in that, in place of the yellow filter, a colorless or color-correcting correction filter having the same transmittance as that of the yellow filter is inserted.