US 10,539,294 B2Granted

Automobile exterior rear view mirror blind spot warning indication device

AssigneesSMR Patents S.à.r.l., Ningbo SMR Huaxiang Automotive Mirrors Ltd.

InventorsNorbert Kürschner, Daniel Fritz, Yifei Feng, Yonggang Li, Weiping Lu

Life of this patent

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Abstract

A blind spot warning indication device for an exterior mirror of an automobile includes a light guide member. A plurality of wedge-shaped bosses are arranged side by side along an axis on the light guide member corresponding to a setting direction of the PCB. One side of each of the plurality of wedge-shaped bosses has a light incident end surface for aligning with a corresponding light source. An upper surface of each of the plurality of wedge-shaped bosses includes a light reflecting side having an optical pattern for reflecting and scattering. The reflecting side having the optical pattern is an upwardly convex arc surface. A lower surface of the wedge-shaped boss has a light emitting side. The outermost wedge-shaped boss has the largest curvature of the light-reflecting side compared to the other wedge-shaped bosses arranged side by side, and the outermost wedge-shaped boss has the longest length of the light-emitting side compared to the other wedge-shaped bosses arranged side by side. The device has the functions of reflection and scattering at the same time. The uniformity of the emitted light at the front surface and certain angles is better, and the warning effectiveness is improved. The LOGO pattern can be better combined with the emitted light.

Claims20

Dependent claims

An indication device for a rearview device of a vehicle, comprising:

a light source assembly for emitting an indicating light beam, and
a light guide member for reflecting the indicating light beam to a marking region, wherein the light source assembly and the light guide member are disposed in a mounting cavity of a carrier plate, the light source assembly comprises a printed circuit board (PCB) and a plurality of juxtaposed light sources mounted on the PCB, and wherein the light guide member comprises:
a plurality of wedge-shaped bosses arranged side by side along an axis on the light guide member corresponding to a setting direction of the PCB;
one side of each of the plurality of wedge-shaped bosses has a light incident end surface for aligning with a corresponding light source;
an upper surface of each of the plurality of wedge-shaped bosses includes a light-reflecting side having an optical pattern for reflecting and scattering and at least a portion having one of a wave-like configuration or a combined step-like and wave-like configuration;
the light-reflecting side having the optical pattern is an upward convex arc surface;
a lower surface of the each of the plurality of wedge-shaped bosses has a light emitting side;
and
an outermost wedge-shaped boss has a largest curvature of the light-reflecting side compared to the remaining plurality of wedge-shaped bosses arranged side by side and has a longest length of the light-emitting side compared to the remaining plurality of wedge-shaped bosses arranged side by side.

6 more elements

A blind spot warning indication device for an exterior mirror of a vehicle, comprising:

a light source assembly for emitting an indicating light beam, and
a light guide member for reflecting the indicating light beam to a mirror surface marking region, wherein the light source assembly and the light guide member are disposed in a mounting cavity of a mirror plate of the exterior mirror, the light source assembly comprises a printed circuit board (PCB) and a plurality of juxtaposed light sources mounted on the PCB, and wherein the light guide member comprises:
two wedge-shaped bosses are arranged side by side along an axis on the light guide member, a first wedge-shaped boss defining an outermost wedge-shaped boss and a second wedge-shaped boss abutting the first wedge-shaped boss;
one side of each of the two wedge-shaped bosses has a light incident end surface for aligning with a corresponding light source;
an upper surface of each of the two wedge-shaped bosses includes a light reflecting side having an optical pattern for reflecting and scattering light configured as an upward convex arc surface and the upper surface of one of the two wedge-shaped bosses includes a portion having at least one of a wave-like configuration or a combined step-like and wave-like configuration;
a lower surface of the two wedge-shaped bosses has a light emitting side;
and
the first wedge-shaped boss has the largest curvature of the light-reflecting side and the longest length of the light-emitting side compared to the second wedge-shaped bosses.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/522,074Filed 25 Jul 2019 · continuation in part
Priority: EP 1515160419 Jan 2015
Published: US 2019/0346111 A114 Nov 2019
Granted: 21 Jan 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

B60R 1/1207
Mirror assemblies combined with other articles, e.g. clocks: with lamps; with turn indicators
B60Q 1/2607
The devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic: comprising at least two…
B60Q 1/2665
Mounted on parts having other functions: on rear-view mirrors
B60Q 1/2696
The devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic: mounting of devices using LEDs

Family

Application15/000,733Parent of this continuation · filed 19 Jan 2016
Application15/916,650Parent of this continuation-in-part · filed 9 Mar 2018
US 10,168,021 B2Parent of this continuation · filed 1 Jan 2019
US 2019/0346111 A1Pre-grant publication · published 14 Nov 2019
US 10,415,792 B2Parent of this continuation-in-part
Application15/916,650Parent of this continuation
US 2016/0209000 A1Published application
US 2018/0195687 A1Published application
US 10,539,294 B2This patent

From the US filing history. Foreign family members aren’t listed.