Global Patent Index - EP 3712493 A1

EP 3712493 A1 20200923 - VEHICULAR LAMP UNIT AND VEHICULAR LAMP

Title (en)

VEHICULAR LAMP UNIT AND VEHICULAR LAMP

Title (de)

FAHRZEUGLAMPENEINHEIT UND FAHRZEUGLAMPE

Title (fr)

UNITÉ DE PHARE DE VÉHICULE ET PHARE DE VÉHICULE

Publication

EP 3712493 A1 20200923 (EN)

Application

EP 20164675 A 20200320

Priority

JP 2019055557 A 20190322

Abstract (en)

Provided is a vehicular lamp in which the plate-shaped light guide portion (34, 34A) can project light uniformly or can be visually recognized/observed as if it emits light uniformly. A vehicular lamp unit (10) includes a light guide body (30, 30A), and a light source (21a, 21b, 21A) configured to emit light guided in the light guide body (30, 30A). The light guide body (30, 30A) includes a first rod-shaped light guide portion (33a, 33Aa) configured to guide light from the light source (21a, 21A) from a proximal end (BE<sub>33a</sub>) thereof to a distal end (FE<sub>33a</sub>) thereof, a second rod-shaped light guide portion (33b, 33Ab) configured to guide light from the light source (21b, 21Ab) from a proximal end (BE<sub>33b</sub>) thereof to a distal end (FE<sub>33b</sub>) thereof, and a plate-shaped light guide portion (34, 34A) disposed between the first rod-shaped light guide portion (33a, 33Aa) and the second rod-shaped light guide portion (33b, 33Ab). The first rod-shaped light guide portion (33a, 33Aa) and the second rod-shaped light guide portion (33b, 33Ab) are juxtaposed with each other with a space therebetween. The plate-shaped light guide portion (34, 34A) includes a front surface (FS<sub>34</sub>, FS<sub>34A</sub>) disposed on a front side of the vehicular lamp unit and a rear surface (RS<sub>34</sub>, RS<sub>34A</sub>) disposed on a back side opposite to the front side, and also includes a first end rim portion (EG1, EG1A) configured to be connected to an outer peripheral surface of the first rod-shaped light guide portion (33a, 33Aa), and a second end rim portion (EG2, EG2A) configured to be connected to an outer peripheral surface of the second rod-shaped light guide portion (33b, 33Ab). The rear surface (RS<sub>34</sub>, RS<sub>34A</sub>) of the plate-shaped light guide portion (34, 34A) includes a plurality of structures (LC2) configured to diffuse the light from the light source (21a, 21b, 21A) entering the plate-shaped light guide portion (34, 34A) from the respective first and second rod-shaped light guide portions (33a, 33Aa, 33b, 33Ab) and cause the light to exit from the front surface (FS<sub>34</sub>, FS<sub>34A</sub>) of the plate-shaped light guide portion (34, 34A). The first end rim portion (EG1, EG1A) and the second end rim portion (EG2, EG2A) of the plate-shaped light guide portion (34, 34A) each include a thin-walled portion (NP1, NP1A, NP2, NP2A) having a thickness thinner than that of the plate-shaped light guide portion (34, 34A) except for the first and second end rim portions (EG1, EG1A, EG2, EG2A).

IPC 8 full level

F21S 43/237 (2018.01); F21S 43/239 (2018.01); F21S 43/245 (2018.01)

CPC (source: EP)

F21S 43/237 (2018.01); F21S 43/239 (2018.01); F21S 43/245 (2018.01); F21S 43/14 (2018.01)

Citation (applicant)

JP 2014116142 A 20140626 - KOITO MFG CO LTD

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3712493 A1 20200923; JP 2020155389 A 20200924; JP 7277196 B2 20230518

DOCDB simple family (application)

EP 20164675 A 20200320; JP 2019055557 A 20190322