Vehicle lamps

Abstract

The present invention provides a vehicle lamp capable of uniformly emitting light in the entire light curtain using light traveling inside one light guide rod. In a position lamp (vehicle lamp) (10), an LED (light source) (11) and a light guide body (12) including a light guide rod (12A) and a flat light curtain (12B) are housed in a lamp chamber (4) ), in the process of guiding the light incident from the LED (11) to the light guide rod (12A) along the length direction of the light guide rod (12A), the lens cutting portion ( 13) The light is reflected and emitted, and the light incident on the light curtain (12B) from one side surface of the light guide rod (12A) is reflected and emitted by the lens cut portion (14) formed in the light curtain (12B), thereby Each lens cut portion (14) is made to emit light, and a prism cut portion (15) is formed on at least a part of the outer edge of the light curtain (12B), and the prism cut portion (15) makes the light traveling in the light curtain (12B) A part of it is reflected back into the light curtain (12B).

Description

technical field [0001] The present invention relates to a vehicle lamp including a light guide body that emits light from a light source. Background technique [0002] For example, some vehicular lamps such as tail lamps and position lamps include a light guide that reflects light incident from a light source such as an LED (Light Emitting Diode) in the process of guiding the light in the longitudinal direction and causes it to escape from the light source. The exit surface emits light and emits light, and a lens cut portion for reflection is continuously formed along the longitudinal direction on the exit opposite surface of the light guide body of the vehicle lamp. [0003] In addition, regarding a vehicle lamp including a light guide body, for example, Patent Document 1 proposes Figure 8 Vehicle lamps shown. [0004] which is, Figure 8 This is a front view of a front combination lamp including the vehicle lamp proposed in Patent Document 1, and the front combination la...

AI Technical Summary

Problems solved by technology

[0012] However, the proposed in Patent Document 1 Figure 8 In the shown position light 110, two first light guides 112A and second light guides 112B are used to make the flat light guide plate 112C emit light, so there is a problem that the structure becomes complicated.

And, the intensity of the light traveling inside the first light guide body 112A and the second light guide body 112B decreases as it moves toward the ends of the first light guide body 112A and the second light guide body 112B ( Figure 8 The lower end portion) gradually becomes weaker, so these first light guide body 112A and second light guide body 112B gradually become darker as they go to the end portion.

Moreover, the flat light guide plate 112C will also move toward the end portion ( Figure 8 The lower end of the light guide plate 112C becomes darker gradually, and there is a problem that the flat light guide plate 112C cannot emit light uniformly.

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