Vehicle lighting unit

1. A vehicle lighting unit comprising:

a first LED and a second LED each having a different color;

a first light guiding lens and a second light guiding lens that are disposed in front of the first LED and the second LED, respectively, the first light guiding lens and the second light guiding lens configured to guide light rays emitted from the first LED and the second LED, respectively, to cause the light rays to exit through respective light exiting faces of the first and second guiding lenses forward; and

a diffusion lens disposed in front of the first light guiding lens and the second light guiding lens, configured to diffuse the light rays exiting from the first light guiding lens and the second light guiding lens while allowing the light rays to pass therethrough forward,

wherein:

the light exiting faces of the first light guiding lens and the second light guiding lens are each configured to be long and juxtaposed with each other in a direction perpendicular to a lengthwise direction thereof with the lengthwise directions coincide with each other;

the diffusion lens has a long shape so as to cover the entire front light exiting faces of the first and second light guiding lenses;

the first LED is configured to emit more amount of light rays than the second LED;

the vehicle lighting unit has a plurality of the second LEDs, the number of which is larger than the number of the first LEDs;

the number of the second light guiding lenses is larger than the number of the first light guiding lenses according to the numbers of the first LEDs and the second LEDs;

the second light guiding lenses are disposed such that the light exiting faces thereof are continuously arranged in its longitudinal direction;

if two or more first light guiding lenses are provided, the first light guiding lenses are disposed such that the light exiting faces thereof are continuously arranged in its longitudinal direction; and

a length of the first light guiding lens is made different from a length of the second light guiding lens so that an entire length of the light emission faces of the first light guiding lens(es) is equal to an entire length of the light emission faces of the second light guiding lenses.

2. The vehicle lighting unit according to claim 1 , wherein the first light guiding lens and the second light guiding lens are provided to be formed in a curved-line shape as a whole when viewed from their front side.

3. The vehicle lighting unit according to claim 1 , wherein the first LED emits light color of which is white and the second LED emits light color of which is amber.

4. A vehicle lighting unit comprising:

a first LED and a second LED each having a different color;

a first light guiding lens and a second light guiding lens that are disposed in front of the first LED and the second LED, respectively, the first light guiding lens and the second light guiding lens configured to guide light rays emitted from the first LED and the second LED, respectively, to cause the light rays to exit through respective light exiting faces of the first and second guiding lenses forward; and

a diffusion lens disposed in front of the first light guiding lens and the second light guiding lens, configured to diffuse the light rays exiting from the first light guiding lens and the second light guiding lens while allowing the light rays to pass therethrough forward,

wherein:

the light exiting faces of the first light guiding lens and the second light guiding lens are each configured to be long and juxtaposed with each other in a direction perpendicular to a lengthwise direction thereof with the lengthwise directions coincide with each other;

the diffusion lens has a long shape so as to cover the entire front light exiting faces of the first and second light guiding lenses; and

the first light guiding lens and the second light guiding lens are provided to be formed in a curved-line shape as a whole when viewed from their front side.

5. The vehicle lighting unit according to claim 4 , wherein the first LED emits light color of which is white and the second LED emits light color of which is amber.

6. A vehicle lighting unit comprising:

a plurality of first LEDs having a first emission color and a plurality of second LEDs having a second emission color;

a plurality of first light guiding lenses disposed in front of the first LEDs in a direction of light emission and each having a light incident face and a light exiting face;

a plurality of second light guiding lenses disposed in front of the second LEDs in a direction of light emission and each having a light incident face and a light exiting face; and

a diffusion lens disposed in front of the light exiting faces of the first light guiding lenses and the second light guiding lenses, the diffusion lens having a diffusion face, the diffusion lens being configured to allow the light rays exiting from the first light guiding lenses and the second light guiding lenses to pass through the diffusion face forward, wherein:

the light exiting faces of the first light guiding lenses and the second light guiding lenses are juxtaposed with each other to form a linear shape as a whole;

the diffusion lens has a shape so as to cover the entire front light exiting faces of the first and second light guiding lenses;

the first LED emit white light; and

each first LED is configured to emit more amount of light rays than each second LED.

7. The vehicle lighting unit according to claim 6 , wherein the first light guiding lenses and the second light guiding lenses are provided to be formed in a curved-line shape as a whole when viewed from their front side.