TWM581067U - Rear-view mirror of car - Google Patents

Abstract

This creation describes a vehicle rearview mirror that includes a reflective lens and a lighting module. Wherein, the reflective lens has a light transmissive pattern. The light-emitting module comprises a casing, a light source and a light guide plate. The light guide plate is disposed in the casing and has an opposite light-emitting surface and a surface, and the surface is used for total reflection. The side of the light guide plate further has an incident surface, and the light source is disposed on the housing and faces the incident surface, so that the light emitted by the light source enters the light guide plate from the incident surface, and reflects the light emitted by the light source through the surface of the light. To the light-emitting surface of the opaque graphic, to display a light-transmissive graphic. Through the structural design of the above-mentioned rearview mirror, the light emitting module can emit a uniform and large-area light beam to display the permeable design of the customized design.

Description

Vehicle rearview mirror

This creation is a rear view mirror used in general vehicles.

Blind Spot Monitoring uses a detector on the body to detect objects around the body. When the detector detects an object (such as another vehicle), it alerts the driver by sight, hearing or vibration. People, make up for the driver's visual blind spots to ensure safe driving.

In the prior art, for example, the invention patent document US Pat. No. 9,227,557 B2 describes a vehicle rearview mirror with an indicating function, please refer to Fig. 2 of the drawings. It can be seen that the mirror 20 is provided with a light transmissive area 21, and a pointing device 30 is disposed behind the mirror surface 21. The indicating device 30 includes a reflecting seat 31 and a light emitting element 32, and the light emitting element 32 faces the reflecting surface 311 of the reflecting seat 31. The light projected by the light-emitting element 32 can be reflected to the light-permeable region 21 via the reflective surface 311 to indicate the user.

However, most of the light-emitting elements 32 of the pointing device 30 used in the rearview mirror use LEDs, and the LEDs are linear light sources, which can only be applied to the small-area permeable region 21 as described in the above patent, and cannot be applied to a large area. The light zone is also difficult to apply to customized graphics, so there is a limited space for improvement.

One of the purposes of this creation is to improve the defects of the prior art rearview mirrors, and to propose an improved design of the vehicle rearview mirror, which can display a larger area of customized graphics on the rearview mirror. .

According to an embodiment of the present invention, a rear view mirror for a vehicle includes a reflective lens and a light emitting module. Wherein, the reflective lens has a back surface, and the back surface has a light transmissive pattern for warning or indicating driving. The light-emitting module is disposed at the rear of the reflective lens, and comprises a casing, a light source and a light guide plate. The light guide plate is disposed in the casing and has a corresponding light-emitting surface and a surface, and the surface is used for total reflection. . The side of the light guide plate further has an incident surface, and the light source is disposed on the housing and faces the incident surface, so that the light emitted by the light source enters the light guide plate from the incident surface, and reflects the light emitted by the light source through the surface of the light. To the light-emitting surface of the opaque graphic, to display a light-transmissive graphic.

Through the structural design of the rear view mirror, the light emitted by the light source can uniformly transmit the light emitted by the light source from the light exit surface and cover the entire light exit surface under the action of the light guide plate, so that the light emitting module can project a large The light beam of the area, that is, the light-emitting module as a whole can be regarded as one side light source, and thus can be applied to various large-area and customized designs of light-transmitting patterns.

In one aspect, the rear view mirror can be an interior rear view mirror or an exterior rear view mirror.

In another aspect, the cross section of the face is a serrated face.

In another aspect, the light source is an array of LEDs and the light source is fixed within the housing.

In another aspect, the illuminating surface is a plane.

In another aspect, the light guide plate contains a light diffusing agent inside.

In another aspect, in order to allow the light-emitting module to be stably fixed to the mirror and face the permeable pattern, the light-emitting module can be directly coupled to the back surface of the reflective lens. Alternatively, a bump may be further disposed on the outer surface of the reflector, so that the light module can be directly coupled to the back surface of the mirror by the bump.

The technical content and features of the present invention are described in detail below with reference to the accompanying drawings, and the "upper", "lower", "inside", "outside", "top", Directional descriptions such as "bottom" are merely illustrative terms used in the normal direction of use and are not intended to limit the scope of the claim.

In order to explain in detail the technical features of the present invention, one of the following embodiments will be described with reference to the drawings, wherein the present embodiment is illustrated by an exterior mirror as an example.

As shown in FIG. 1 to FIG. 2, the rear view mirror 10 includes a reflective lens 20, a light emitting module 30 and a lens holder 40. The reflective lens 20 is disposed on the lens holder 40 and the light emitting module 30 is disposed on the lens holder. 40 internal.

The reflecting lens 20 is for displaying an object around the vehicle, and the back surface 21 is provided with a layer of aluminum or chrome plating (the plating layer is usually thin, so the plating layer is omitted in FIG. 2) to achieve a reflection effect. In addition, a suitable position behind the reflective lens 20 (for example, the position of the connecting member 41 relatively far from the lens holder 40 shown in the embodiment) is also engraved on the plating layer by a laser engraving pattern to make a light transmissive pattern 22 Light can be transmitted from the back side 21 of the mirror 20 to the front side 23 of the mirror 20 via the permeable pattern 22.

Please refer to Figure 2 to Figure 5. The light module 30 includes a housing 31, a light source 32, and a light guide plate 33. The housing 31 is hollow and has a chamber 311, an opening 312 and a setting surface 314. The opening 312 communicates with the chamber 311 and the outside of the light-emitting module 30. The casing 31 is made of plastic, and its inner wall is plated with a smooth metal layer to achieve a reflection effect. In addition, the outer surface of the housing 31 is further provided with two bumps 315 (only one bump 315 is shown in FIG. 2 and FIG. 3 ), so that the light-emitting module 30 can be disposed behind the reflective lens 20 through the bumps 315 . As shown in FIGS. 3 to 5, the light guide plate 33 is made of acryl, and the light guide plate 33 contains a light diffusing agent inside, thereby enhancing the light diffusibility of the light guide plate 33. The light guide plate 33 is fixed to the casing 31 by means of ultrasonic welding (also adhesive bonding) and shields the opening 312. The light guide plate 33 has an opposite surface 331 and a light exit surface 332 and has an incident surface 333 on the side. The light exit surface 332 is a plane, and the cross section of the pupil surface 331 is a sawtooth surface, which includes a plurality of triangular segments 334 (Fig. 5) which are laterally extending and arranged at equal intervals. The entrance face 333 is planar and faces the set face 314. In the present embodiment, the light source 32 uses an LED, which encapsulates an LED array 321 on a substrate 322 in an integrated circuit package. The light source 32 is a mounting surface 314 fixed in the chamber 311. The LED array 321 can be controlled to emit light, so that the light emitted by the light source 32 can enter the light guide plate 33 from the incident surface 333 and is under the action of the surface 331. The light is totally reflected to the light exit surface 332, and a large area of light beam is uniformly transmitted from the light exit surface 332 to illuminate and display the light transmissive pattern 22, so that the driver can see the pattern 22 appearing from the light beam from the outside of the rear view mirror 10. .

Please refer to Figure 6. Through the structural design of the rear view mirror 10, when the detector 71 of a blind spot detection system 7 of the vehicle detects other vehicles 8 (or pedestrians) around the vehicle, the blind spot detection system 7 can drive the light source 32. The light is emitted, so that the light emitted by the light source 32 can uniformly project a large-area light beam to the light-transmittable pattern 22 via the light guide plate 33, thereby revealing the light-transmissive pattern 22 to remind the driving and ensure driving safety. The effect of enlarging the beam area through the light guide plate 33 allows the entire light-emitting module 30 to be regarded as one side light source, and thus can be applied to various large-area and custom-designable light-transmittable patterns 22.

The above is only the examples listed in this creation. All changes and modifications made in accordance with the scope of patent application should be covered by this creation.

7‧‧‧Blind Spot Detection System

71‧‧‧Detector

8‧‧‧ Vehicles

10‧‧‧Mirrors

20‧‧‧Reflective lenses

21‧‧‧Back

22‧‧‧ graphics

23‧‧‧ Positive

30‧‧‧Lighting module

31‧‧‧Shell

311‧‧ ‧ room

312‧‧‧ openings

314‧‧‧Setting surface

315‧‧‧Bumps

32‧‧‧Light source

321‧‧‧LED array

322‧‧‧Substrate

33‧‧‧Light guide plate

331‧‧‧稜鏡

332‧‧‧Glossy

333‧‧‧Incoming surface

334‧‧‧ triangle

40‧‧‧Mirror base

41‧‧‧Connecting parts

The detailed construction, features, assembly or use of the vehicle rear view mirror will be described in the following embodiments, however, it should be understood that the embodiments and drawings described below are merely illustrative only, It should not be used to limit the scope of patent application for this creation, where:

Figure 1 is a perspective view of a vehicle rear view mirror of the embodiment;  Figure 2 is a side view of Figure 1, which omits the mirror mount of the rear view mirror;  3 is an exploded view of the light emitting module of the embodiment;  Figure 4 is a cross-sectional view of the light emitting module of the embodiment;  Figure 5 is a cross-sectional view of a light guide plate of the light-emitting module of the embodiment;  6 is an action block diagram of a blind spot detection system of an embodiment.  

Claims (7)

A rearview mirror for a vehicle, comprising:  a reflective lens having a back surface having a light transmissive pattern;  An illumination module is disposed at the rear of the reflective lens. The illumination module includes a housing, a light source, and a light guide plate. The light guide plate is disposed in the housing and has an opposite light emitting surface and a surface for performing Total reflection, the side of the light guide plate further has an incident surface, the light source is disposed on the housing and faces the incident surface, so that light emitted by the light source enters the light guide plate from the incident surface, and Reflecting the surface and reflecting the light emitted by the light source to the light emitting surface;  Wherein, the light emitting surface faces the light transmissive pattern.   The vehicle rearview mirror according to claim 1, wherein the cross section of the kneading surface is a sawtooth surface. The vehicle rear view mirror of claim 1, wherein the light source is an LED array, and the light source is fixed in the housing. The vehicle rearview mirror according to claim 1, wherein the light exiting surface is a plane. The vehicle rearview mirror according to claim 1, wherein the light guide plate contains a light diffusing agent inside. The vehicular rearview mirror of claim 1, wherein the illuminating module is directly coupled to the back surface of the reflective lens. The vehicular rearview mirror of claim 1, wherein the outer surface of the housing is further provided with a bump, and the light emitting module is directly coupled to the back surface of the reflective lens through the bump.