JPH0531003U - Vehicle lighting - Google Patents

Abstract

(57) [Summary] [Purpose] Tail lamps and stop lamps can be clearly discriminated even at dusk, etc., and lamp discrimination performance and safety are improved. In a vehicular lamp 1 in which a tail lamp 10 and a stop lamp 11 are arranged adjacent to each other, a chromaticity of a front lens 6 of the stop lamp 11 is made larger than a chromaticity of a front lens 5 of the tail lamp 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicular lamp in which a tail lamp and a stop lamp are arranged adjacent to each other.

[0002]

[Prior Art]

 The tail lamp of a car is a lamp used to show its presence to the rear when driving at night. The color of the light is regulated to red, and it is obligatory that the lighting can be confirmed from 150m behind at night. The stop lamp is a lamp that indicates that the vehicle is braking while driving, and the brightness can be confirmed from 30m behind the daytime. Since the lamp color is the same red, it is specified that the luminous intensity is three times or more that of a tail lamp. Tail lamps and stop lamps usually use incandescent light bulbs as the light source. By coloring the lenses in red with the same brightness and using light bulbs with different wattage (W), the above luminous intensity difference is obtained. I am trying. It should be noted that when the voltage of the light source changes, the temperature of the filament also changes, so the resistance changes, and the current, power, luminous intensity, efficiency, life, etc. also change. Similarly, when it deteriorates, the luminous intensity changes.

[0003]

[Problems to be solved by the device]

 However, in a vehicular lamp that has a tail lamp and a stop lamp that are adjacent to each other and has the same red color, the wattage (W) of the tail lamp and the stop lamp are different to obtain a predetermined light intensity difference. However, it was difficult to clearly distinguish the difference in luminosity at dusk, heavy fog, and rain, and there was a problem in ensuring safety. Further, when the light bulb deteriorates, the desired difference in luminous intensity cannot be satisfied. Therefore, there is a limit in distinguishing both lamps only by the difference in luminous intensity.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to be able to clearly distinguish the tail lamp and the stop lamp from each other, and to identify the lamp and the lamp. It is to provide a vehicular lamp with improved safety.

[0005]

[Means for Solving the Problems]

 The present invention has been made to achieve the above-mentioned object, and the first invention thereof is to arrange a tail lamp and a stop lamp adjacent to each other, and to obtain the chromaticity of the lens of the stop lamp and the chromaticity of the lens of the tail lamp. Is different. The second idea is to arrange a tail lamp using an incandescent lamp as a light source and a stop lamp using a plurality of light emitting diodes as light sources so that the chromaticity of the stop lamp lens and that of the tail lamp can be adjusted. The wavelength of the light emitted from the light emitting diode is made the same and is longer than the wavelength of the light emitted from the incandescent light bulb.

[0006]

[Action]

 In the first invention, the chromaticity of the tail lamp and the lens of the stop lamp are different, and therefore the lighting color when the light source is turned on is also different, which improves the identification performance of the lamp. In the second invention, even if the chromaticity of the lens is the same, since the wavelength of the light emitted from the light emitting diode and the wavelength of the light emitted from the incandescent lamp are different, the luminous intensity and the lamp color are different, which enhances the discrimination performance of the lamp.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a sectional view showing an embodiment of a vehicular lamp according to the present invention, and FIG. 2 is a partially cutaway front view of the vehicular lamp. In the figure, a vehicle lamp 1 includes a lamp body 4 whose interior is divided into two lamp chambers 3A and 3B by a partition wall 2 and front lenses 5 and 6 that hermetically close the lamp chambers 3A and 3B. And a tail lamp bulb 7 and a stop lamp bulb 8 respectively arranged in the lamp chambers 3A and 3B, the two lamps having different functions, that is, the tail lamp 10 and the stop lamp 11 are integrally assembled. It forms a so-called combination lamp.

Although the front lenses 5 and 6 are formed by being colored in the same red color, they are formed with different chromaticities, and the chromaticity of the front lens 6 of the stop lamp 11 is the front surface of the tail lamp 10. The chromaticity is set to be larger than the chromaticity of the lens 5, that is, to be flat, it is a clear color. Chromaticity is a numerical limit of the type of light color that is considered excluding lightness, and is a value that is determined by hue and purity (vividness) and that indicates characteristics related to tint. Since the two front lenses 5 and 6 are formed with different chromaticities as described above, simultaneous molding by a mold is impossible, and thus the front lenses 5 and 6 are manufactured by a conventionally known multicolor molding method. That is, in this multicolor molding method, on the other hand, for example, the front lens 5 is injection-molded by the first lens molding die in advance, and then the front lens 5 is loaded into the second lens molding die, The front lens 6 is integrally bonded to the front lens 5 by injecting and filling molten resin in the cavity to manufacture one front lens. Then, on the rear surface of the front lens 5, 6 manufactured in this way, a joint projection 12 is integrally provided at the joint portion to increase the joint strength, and at the peripheral portion of the rear surface, a lamp is provided. A seal leg 15 that is inserted into a seal groove 13 provided in the front opening of the body 4 and fixed by an adhesive 14 is integrally projected over the entire circumference. The joint projection 12 is also inserted into the seal groove 16 provided at the front end of the partition wall 2 and fixed by the adhesive 14. Reference numeral 17 is a convex lens formed on the inner surface of each front lens 5, 6.

The tail lamp bulb 7 and the stop lamp bulb 8 are incandescent light bulbs. Since the tail lamp 10 and the stop lamp 11 have a predetermined light intensity difference, the stop lamp bulb 8 is for the tail lamp. It has a higher wattage than the bulb 7 and has a large brightness.

In the vehicular lamp 1 having such a configuration, when the tail lamp bulb 7 and the stop lamp bulb 8 are turned on at the same time, the stop lamp 11 has a higher luminous intensity than the tail lamp 10, and therefore the front lens 6 is placed in front. Illuminate more brightly than the lens 5. Further, since the front lenses 5 and 6 have different chromaticities, even the same red color is perceived as red color with a different color difference. That is, in this embodiment, in addition to the luminous intensity, the lamp color is changed within the standard range to improve the discrimination performance of the two lamps 10 and 11. As a result, during the dusk, the thick fog, and the rainy weather. Even when the bulb is slightly deteriorated, it can be discriminated well, and the performance as a lamp and the safety during traveling can be improved.

FIG. 3 is a diagram showing a chromaticity diagram of the valves 5 and 6. The chromaticity of the tail lamp 10 and the stop lamp 11 in an automobile is specified to have a peak wavelength in the range of about 610 nm to 670 nm, and in the case of an incandescent light bulb, it is usually about 615 nm.

FIG. 4 is a sectional view showing another embodiment of the present invention. In this embodiment, an incandescent light bulb 7 is used as a light source of the tail lamp 10, a large number of light emitting diodes 20 are used as a light source of the stop lamp 11, and inner lenses 21 and 22 are provided in each of the lamp chambers 3A and 3B. .. The incandescent light bulb 7 has a peak wavelength of about 615 nm, and the light emitting diode 20 uses a high-luminance red light emitting element made of GaAlAs, which has a peak wavelength of 660 nm.

The front lenses 5 and 6 and the inner lenses 21 and 22 are all colored red with the same chromaticity. Reference numeral 23 is a printed circuit board.

In such a configuration, although the front lenses 5 and 6 and the inner lenses 21 and 22 are all colored red with the same chromaticity, the light emitting diode 20 has a higher luminous intensity than the incandescent light bulb 7. In addition, since the peak wavelength is long, the brightness of the front lenses 5 and 6 is different as in the above embodiment, and even the red color having the same chromaticity is perceived as a red color having a different color difference. That is, also in this embodiment, in addition to the luminous intensity, the lighting color can be changed within the standard range.

[0015]

[Effect of the device]

 As described above, the vehicular lamp according to the present invention is configured to maintain the luminous intensity ratio when the tail lamp and the stop lamp, which are provided adjacent to each other, are lit at a prescribed luminous intensity ratio and to change the lamp color within the standard range. As a result, the identification performance of the lamp can be greatly improved, and the effect of preventing accidents while driving is great.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a partially cutaway front view of the lamp.

FIG. 3 is a chromaticity diagram.

FIG. 4 is a cross-sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Vehicle Lamp 3A, 3B Lamp Room 4 Lamp Body 5,6 Front Lens 7,8 Bulb 10 Tail Lamp 11 Stop Lamp 20 Light Emitting Diode

Claims (2)

[Scope of utility model registration request] 1. A vehicular lamp comprising a tail lamp and a stop lamp disposed adjacent to each other, wherein the chromaticity of the lens of the stop lamp and the chromaticity of the lens of the tail lamp are different. 2. A tail lamp using an incandescent lamp as a light source,
A stop lamp using multiple light emitting diodes as light sources is arranged adjacent to each other, the chromaticity of the lens of the stop lamp and the chromaticity of the lens of the tail lamp are made the same, and the wavelength of light emitted from the light emitting diode is emitted from the incandescent light bulb. A vehicular lamp characterized by being made longer than the wavelength of light.