Vehicle lamp

Abstract

A vehicle lamp has an internal lens extending substantially along a rounding translucent cover and enables to irradiate the front of the lamp with substantially uniform brightness, free of reducing the utilization efficiency of a light source and light beams. The translucent cover (114) is formed by surrounding towards the back of the lamp from the left end part to the right end part. The back (32b) of the internal lens (32) extending substantially along the translucent cover is provided with a plurality of beam deflection elements (32s1), which make irradiated light from a light emitting diode (20) as substantially parallel incident light towards the direction of the prescribed angle inclination at the right side relative to the front and back of the lamp. In addition, the front (32a) ofthe internal lens (32) is provided with a plurality of light diffusion elements (32s2), which enable the substantially parallel light to be emitted at a substantially identical diffusion angle at theleft and right sides relative to the front and back of the lamp. Almost no steps are arranged between all the light diffusion elements, enabling the light to be emitted from the internal lens at a substantially identical diffusion angle at the left and right sides and preventing the problem of low utilization efficiency of the light source and the light beams.

Description

technical field [0001] The present invention relates to a vehicular lamp having a translucent cover formed in a circumferential manner, and more particularly to a vehicular lamp having an inner lens extending substantially along the transmissive cover. Background technique [0002] Conventionally, as a vehicle lamp structure, for example, as described in Patent Document 1, a light source that emits light toward the front of the lamp is arranged in a lamp chamber formed by a lamp body and a translucent cover, and the emitted light from the light source is The structure of the inner lens that sees through. [0003] In the vehicle lamp described in this patent document 1, a plurality of fish-eye steps (fish-eye steps) are formed on the front surface of the inner lens as a light diffusing element, and the emission from the light source is made by these plurality of fish-eye steps. Light diffuses to illuminate the front of the luminaire with approximately uniform brightness. ...

AI Technical Summary

Problems solved by technology

[0006] In such a vehicular lamp, there is a problem that, by forming only a plurality of fish-eye steps in front of the inner lens, the emitted light from the inner lens cannot be uniformly distributed on the left and right sides with respect to the front direction of the lamp. Diffused light, therefore, does not illuminate the front of the luminaire with approximately uniform brightness

[0007] On the other hand, there is also the following problem: In order to make the emitted light from the internal lens diffuse equally on the left and right sides with respect to the front direction of the lamp, it is necessary to provide a large gap between the fisheye steps. The steps, therefore, correspondingly reduce the utilization efficiency of the light source beam

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