CN211223231U

CN211223231U - Blind area warning light-emitting device for vehicle rearview mirror

Info

Publication number: CN211223231U
Application number: CN201921718299.9U
Authority: CN
Inventors: 黄美惠
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-28
Filing date: 2019-10-14
Publication date: 2020-08-11
Anticipated expiration: 2029-10-14

Abstract

A blind area warning light-emitting device for a vehicle rearview mirror comprises a light guide part, a sleeve cover and an LED lamp located in the sleeve cover, wherein the light guide part comprises a light inlet surface and a light outlet surface adjacent to the light inlet surface side, a plurality of concave arc grooves are formed in the light inlet surface, an action surface is formed at the opposite end of the light outlet surface, a plurality of reflecting surfaces are arranged on the action surface, the light guide part is arranged in the sleeve cover, and the LED lamp is aligned with the light inlet surface of the light guide part. When the blind area of car side senses the vehicle and gets into, drive LED lamp promptly and jet out light, should jet out light and spread through the concave arc groove of income plain noodles department promptly, and through the reflex action of a plurality of reflection of light faces, and will jet out the even outside of light diffusion and jet out, therefore the driver can receive even bright but not dazzling warning light in the vision, reaches better car side blind area warning effect.

Description

Blind area warning light-emitting device for vehicle rearview mirror

Technical Field

The utility model discloses a blind area warning illuminator for vehicle rearview mirror especially indicates a setting in vehicle rearview mirror, can provide even bright warning light to remind driver's car side to have the warning illuminator that the car got into the blind area.

Background

The rear-view mirrors installed on both sides of the vehicle can be used for observing the road condition behind the vehicle side, so that a driver can prejudge whether an incoming vehicle enters the rear part of the vehicle side or not, and the driver can be warned to prepare and respond in advance before changing lanes. The blind area warning and light-emitting device is arranged in the shell of the vehicle rearview mirror and is electrically connected with the sensors arranged on the two sides of the vehicle, so that when a vehicle comes into the blind area on the rear sides of the two sides of the vehicle, the LED lamp arranged in the blind area warning and light-emitting device can be driven to emit light by the sensing signal of the sensor, the LED lamp emits light, and the light is emitted through the light-transmitting interval of the lens, so that a driver can be reminded of being alert, and the collision accident caused by the vehicle coming from the rear side of the vehicle when the vehicle changes lanes or turns under an unconscious condition can be avoided.

The blind area warning light source is arranged in the vehicle rearview mirror, and although the driver can change lanes or turn forwards, whether the vehicle enters a blind area on the side of the vehicle or not can be judged by judging whether the LED lamp of the vehicle rearview mirror emits light, so that the driver can be warned in time and prepare in advance. However, the light emitted from the LED lamp, the point light emitted from the LED lamp, is very glaring, especially in the night environment, the pupil of the eye is enlarged, and the light directly emitted from the LED lamp, if not homogenized, that is, the eyes of the driver are suddenly stimulated, can cause the driver to be nervous, and the steering wheel is rotated in a reflective action, so that the vehicle is easily out of control and unexpected traffic accidents occur. For example, the manufacturing cost is greatly increased by adding a diffusing agent into the warning light emitting device to homogenize the light emitted from the LED lamp. Therefore, the existing LED lamp used as the vehicle side blind area warning light source still has the problems of too dazzling light of the LED lamp, or increased manufacturing cost for light homogenization treatment, and the like, and needs to be improved by research and innovation in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model provides a blind area warning illuminator for vehicle rearview mirror, which is arranged in a vehicle rearview mirror and comprises a light guide part, the light guide part comprises a light-emitting surface and an action surface which is not parallel to the light-emitting surface and is separated along a longitudinal direction, a light-in surface and a terminal surface which are adjacent to two ends of the light-emitting surface and the action surface respectively, the length dimension of the light-in surface formed along the front and back directions is larger than the length dimension of the terminal surface formed along the front and back directions, a plurality of concave arc grooves are formed on the light-in surface, the action surface comprises a plurality of concave parts, a plurality of reflecting surfaces are defined by the concave parts, an acute angle is formed between the plurality of reflecting surfaces and the light-emitting surface, and a cover is arranged around the light guide part and covered by the cover comprises a first surface and a second surface which are separated along the front and back directions, the light guide member is arranged in the accommodating chamber, a light emitting surface of the light guide member is aligned with a light transmitting section arranged on a lens side of the vehicle rearview mirror, the circuit board is arranged in the accommodating chamber of the cover, the circuit board comprises an LED lamp which is electrically connected, the LED lamp is aligned with a light incident surface of the light guide member, and when the LED lamp is driven to emit light, the emitted light is firstly diffused by a concave arc groove of the light incident surface and then reflected by a plurality of reflecting surfaces to uniformly emit the light towards the light emitting surface.

The utility model discloses characteristics, to the light that the LED lamp jetted out promptly, earlier behind the concave arc groove diffusion of the income plain noodles of leaded light spare, again via the reflex action of each reflection of light face of a plurality of reflection of light faces, make blind area warning light emitting device can produce even bright warning light in vehicle rearview mirror department, avoid the too strong amazing driver's eyes of pointolite light of LED lamp by this. And, the utility model discloses to the light that jets out of LED lamp to the concave arc groove of income plain noodles diffuses, and by the reflex action of a plurality of reflection of light faces of leaded light spare, and can be under the prerequisite that does not add the diffusant and do not increase manufacturing cost, can provide the even bright visible light's of driver warning effect.

The present invention will be more clearly understood from the detailed description of illustrative embodiments of the invention given in conjunction with the drawings.

Drawings

Fig. 1 is the utility model discloses blind area warning illuminator installs in car rearview mirror three-dimensional exploded view.

Fig. 2 is the three-dimensional exploded view of the blind area warning and illuminating device of the present invention.

Fig. 3 is the light guide side view of the blind area warning and illuminating device of the present invention.

Fig. 4 is a perspective view of the blind area warning and illuminating device of the present invention combined with the lens set.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 4.

FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5 showing the LED light rays emitted from the LED lamp first spreading through the plurality of concave arc grooves on the light incident surface.

Fig. 7 is a schematic diagram of the driving LED lamp of the present invention emitting light rays through the diffusion of the concave arc grooves of the light incident surface and the reflection of the light reflecting surfaces to generate light rays with uniform brightness.

Description of reference numerals: 10-vehicle rearview mirror; 20-a lens group; 22-a lens holder; 24-a first side; 26-a second face; 27-a localization zone; 28-window; 29-a lens; 30-a light-transmitting interval; 32-blind area warning light emitting device; 34-a light guide; 36-a light-emitting surface; 38-a positioning section; 40-a light incident surface; 42-concave arc groove; 44-lateral edge; 46-a terminal face; 48-a first side; 50-a second side; 54-acting surface; 58-a light-reflecting surface; 62-a recess; 66-a bevel segment; 68-a circuit board; 70-LED lamps; 71-optical axis; 72-cover; 74-a first surface; 76-a second surface; 78-outer peripheral surface; 80-chamber; 82-inner peripheral surface; 84-a bottom surface; 86-caulking groove; 88-cutting section; 90-punching; 92-a clamping groove; 94-a housing; 96-opening; 98-an accommodating space; 111-a shaping sheet; 113-shaping the hole; 115-adhesive layer; a-acute angle.

Detailed Description

Referring to fig. 1 to 6, the blind spot warning illuminator 32 for a vehicle rearview mirror of the present invention is installed in a lens holder 22 of a lens assembly 20 of a vehicle rearview mirror 10. The rearview mirror 10 further includes a housing 94, and the housing 94 has an opening 96 on a surface thereof and a receiving space 98 recessed from the opening 96 into the housing 94. The lens holder 22 includes a first surface 24 and a second surface 26 spaced apart from each other, and the lens holder 22 has a positioning area 27, a window 28 is formed in the positioning area 27 and penetrates through the first surface 24 and the second surface 26, and the window 28 provides a blind spot warning light device 32 to be disposed therein. The lens assembly 20 further includes a lens 29, the lens 29 has a transparent area 30, the lens 29 is adhered to the second surface 26 of the lens base 22 by an adhesive layer 115 (as shown in fig. 5), and the transparent area 30 is aligned with the window 28. The lens assembly 20 is mounted in the housing 94, and is inserted into the housing 94 with the first surface 24 facing the opening 96 of the housing 94, and is combined in the accommodating space 98 of the housing 94.

As shown in fig. 1 and fig. 2, the blind spot warning light emitting device 32 of the present invention includes a light guide member 34 made of a light transmissive material and a cover 72 covering the light guide member 34, and a circuit board 68 is disposed in the cover 72, and the circuit board 68 is electrically connected to an LED lamp 70. Further, the light transmissive material for manufacturing the light guide member 34 of the present invention includes: polycarbonate (PC), polymethyl methacrylate (PMMA), Polystyrene (PS), etc., but the material is not limited to these three.

Referring to fig. 2 and 3, the light guide 34 of the present invention includes a light emitting surface 36 spaced along a front-back direction, an acting surface 54 non-parallel to the light emitting surface 36, a light incident surface 40 and a terminal surface 46 spaced along a longitudinal direction, and a first side surface 48 and a second side surface 50 spaced along a transverse direction perpendicular to the longitudinal direction and perpendicular to the front-back direction. The light incident surface 40 and the terminal surface 46 are respectively adjacent to the light emitting surface 36 and the action surface 54. The first side surface 48 and the second side surface 50 are respectively adjacent to two sides of the light emitting surface 36, the acting surface 54, the light incident surface 40 and the terminal surface 46, a positioning portion 38 is formed at the periphery of the light emitting surface 36 of the light guide member 34, and an inclined surface section 66 is formed between the first side surface 48 and the terminal surface 46. The length of the light incident surface 40 in the front-rear direction is larger than the length of the end surface 46 in the front-rear direction. The active surface 54 is gradually inclined from the incident surface 40 side to the light-emitting surface 36 along the longitudinal direction, so that the light guide member 34 is substantially wedge-shaped when viewed from the side (as shown in fig. 3).

As shown in fig. 2 and 3, a plurality of concave arc grooves 42 are formed on the light incident surface 40 of the light guide member 34, a side edge 44 is formed on each of two sides of each concave arc groove 42, and the two side edges 44 of each concave arc groove 42 are overlapped with one side edge 44 of each adjacent concave arc groove 42. In addition, the width dimension between the two side edges 44 of any one of the concave arc grooves 42 ranges from 0.5mm to 2 mm. And the depth range of any one of the concave arc grooves 42 from the deepest bottom end to the light incident surface 40 is 0.5mm to 2 mm.

As shown in fig. 2 and 3, the active surface 54 of the light guide 34 includes a plurality of concave portions 62 extending from the side of the first side surface 48 to the side of the second side surface 50, the plurality of concave portions 62 define a plurality of light-reflecting surfaces 58 extending from the side of the first side surface 48 to the side of the second side surface 50, and an acute angle a is formed between the plurality of light-reflecting surfaces 58 and the light-emitting surface 36. Generally, the acute angle A ranges from 26 to 45. Preferably, the acute angle a formed between the light-reflecting surfaces 58 of the light-guiding member 34 and the light-emitting surface 36 ranges from 31 ° to 40 °, and when the acute angle a between the first light-reflecting surface 58 and the light-emitting surface 36 adjacent to the light-incident surface 40 is 31 °, the acute angle a between the light-reflecting surface 58 and the light-emitting surface 36 increases by 0.5 ° to 1 ° when the light-reflecting surface 58 increases by one step in the longitudinal direction, until the acute angle a between the last light-reflecting surface 58 and the light-emitting surface 36 adjacent to the terminal surface 46 is 40 °.

As shown in fig. 2, the cover 72 of the present invention is a non-light-transmissive shell, and includes a first surface 74 and a second surface 76 spaced apart in a front-back direction, and an outer peripheral surface 78 is formed between the first and

second surfaces

74, 76. The outer peripheral surface 78 of the cap 72 is of the same shape as the window 28 of the lens holder 22. A chamber 80 is recessed into the first surface 74, the chamber 80 includes a bottom surface 84 and an inner circumferential surface 82 disposed around the bottom surface 84, the inner circumferential surface 82 includes a cut section 88, a caulking groove 86 is formed between the first surface 74 and the inner circumferential surface 82, and the bottom surface 84 is atomized. A through hole 90 extends through the outer surface 78 and the inner surface 82 to communicate with the chamber 80. The chamber 80 is provided with a locking groove 92 adjacent to the through hole 90.

As shown in fig. 2, 5 and 6, the circuit board 68 of the blind spot warning light emitting device 32 of the present invention is electrically connected to a sensor disposed on a side of a vehicle. The circuit board 68 includes an LED light 70 electrically connected thereto. The LED lamp 70 has directivity in an optical axis 71 (center line of light flux) of light emitted therefrom. The utility model discloses if according to the definition of international commission on Illumination (CIE) to Beam angle (Beam angle), then the utility model discloses the Beam angle scope of the LED lamp 70 of chooseing for use is roughly between 10 to 120. Preferably, the selected beam angle of the LED lamp 70 is in the range of 40 to 80. Most preferably, the beam angle of the LED lamp 70 is 60 ° ± 10 °.

Referring to fig. 5, 6 and 7, the present invention is applied to a combination, in which one side of the circuit board 68 is disposed in the engaging groove 92 of the cover 72, and the LED lamp 70 is aligned with the light incident surface 40 of the light guide member 34. The optical axis 71 of the light emitted from the LED lamp 70 extends linearly from the light incident surface 40 along the longitudinal direction. The light beam emitted from the LED lamp 70 can cover one or more of the concave arc grooves 42. The cover 72 covers the light guide 34, so that the light guide 34 extends into the chamber 80 of the cover 72, and the positioning portion 38 of the light guide 34 is disposed in the insertion groove 86. And, the beveled section 66 of the light guide 34 is aligned with the chamfered section 88 of the cover 72. The light-emitting surface 36 of the light-guiding member 34 is disposed toward the window 28 of the lens holder 22, so that the outer peripheral surface 78 of the cover 72 is forced into the window 28 of the lens holder 22 to be tightly positioned, and the through hole 90 of the cover 72 is partially exposed outside the window 28, so that a sensor disposed on a side of a vehicle can penetrate into the accommodating chamber 80 through the through hole 90 and is electrically connected to the circuit board 68. And attaching a molding sheet 111 (as shown in fig. 5) to the light-emitting surface 36 of the light guide 34, wherein the molding sheet 111 includes a molding hole 113, and the molding hole 113 is aligned with the light-emitting surface 36 of the light guide 34. Therefore, when the sensor mounted on the vehicle side senses that a vehicle enters the blind area, the LED lamp 70 is driven, the light emitted from the LED lamp 70 irradiates the plurality of concave arc grooves 42 of the light incident surface 40, and is diffused into the light guide member 34 through one or more concave arc grooves 42 of the light incident surface 40, and the diffused light entering the light guide member 34 is reflected by the plurality of light reflecting surfaces 58 and is emitted toward the light emitting surface 36 by utilizing the total reflection principle, so that the uniformly diffused emitted light is emitted outward through the modeling holes 113 of the modeling sheet 111 and the light transmitting section 30 of the lens 29.

The utility model discloses characteristics, set up in the car rearview mirror 10 because of blind area warning illuminator 32 promptly, to the light that jets out of LED lamp 70, earlier via the diffusion of one or more concave arc groove 42 of the income plain noodles 40 of leaded light piece 34, via the reflex action of a plurality of reflection of light face 58 again, make blind area warning illuminator 32 can produce even bright warning light in car rearview mirror 10, avoid the too strong amazing driver's eyes of pointolite light of LED lamp 70 by this. And, the utility model discloses carry out the diffusion to the light that jets out of LED lamp 70, and by the reflex action of a plurality of reflection of light faces 58 of leaded light piece 34, and can not add the diffusant at leaded light piece 34 and under the prerequisite that does not increase manufacturing cost, can provide the even bright visible light's of driver warning effect.

The basic teaching of the invention has been described, and many extensions and variations will be apparent to those having ordinary skill in the art. For example, two sides 44 of any one of the concave arc grooves 42 formed at the light incident surface 40 of the light guide member 34 are respectively formed, the two sides 44 of any one of the concave arc grooves 42 are not overlapped with one side 44 of any adjacent concave arc groove 42, and when the LED lamp 70 is driven to emit light, as long as the light emitted from the LED lamp 70 is irradiated at any one of the concave arc grooves 42, the light emitted from the LED lamp 70 can be diffused in the light guide member 34, which is obvious to those skilled in the art.

As the present invention disclosed in the specification may be embodied in other specific forms without departing from the spirit or general characteristics thereof, and it is noted that some of these specific forms have been set forth, the embodiments disclosed in the specification should be considered as illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.

Claims

1. A blind spot warning light emitting device for a vehicle rearview mirror, which is installed in a vehicle rearview mirror, comprising:

the light guide piece comprises a light emitting surface, an action surface, a light incident surface and a terminal surface, wherein the light emitting surface is separated along a front-back direction, the action surface is not parallel to the light emitting surface, the light incident surface and the terminal surface are separated along a longitudinal direction, the light incident surface and the terminal surface are respectively adjacent to two ends of the light emitting surface and the action surface, the length dimension formed by the light incident surface along the front-back direction is larger than the length dimension formed by the terminal surface along the front-back direction, a plurality of concave arc grooves are formed on the light incident surface, the action surface comprises a plurality of concave parts, a plurality of light reflecting surfaces are defined by the concave parts, and an acute angle is formed between the light reflecting surfaces;

the cover is covered around the light guide piece and comprises a first surface and a second surface which are separated along the front-back direction, an outer peripheral surface is formed between the first surface and the second surface, a containing chamber is recessed into the first surface, the light guide piece is arranged in the containing chamber, and the light emitting surface of the light guide piece is aligned with a light transmitting area arranged on one lens side of the rearview mirror;

the circuit board is arranged in the accommodating chamber of the cover and comprises an LED lamp which is electrically connected with the circuit board, the LED lamp is aligned with the light incoming surface of the light guide piece, when the LED lamp is driven to emit light, the emitted light is firstly diffused by the concave arc groove of the light incoming surface and then reflected by the plurality of reflecting surfaces to be uniformly emitted outwards in the direction of the light outgoing surface.

2. The blind spot warning light emitting device according to claim 1, wherein the light guide member further includes a first side surface and a second side surface spaced apart in a transverse direction perpendicular to the longitudinal direction and perpendicular to the front-rear direction, the first side surface and the second side surface being respectively adjacent to both sides of the light emitting surface, the acting surface, the light incident surface and the terminal surface, the plurality of concave portions extend from a first side surface side to a second side surface side, the plurality of light reflecting surfaces extend from the first side surface side to the second side surface side, and acute angles formed between the plurality of light reflecting surfaces and the light emitting surface range from 26 ° to 45 °.

3. The blind spot warning light emitting device according to claim 1, wherein the light guide member further includes a first side surface and a second side surface spaced apart in a transverse direction perpendicular to the longitudinal direction and the front-rear direction, the first side surface and the second side surface being adjacent to both sides of the light emitting surface, the active surface, the light incident surface and the terminal surface, respectively, the plurality of concave portions extend from a first side surface side to a second side surface side, the plurality of light reflecting surfaces extend from the first side surface side to the second side surface side, an acute angle formed between the plurality of light reflecting surfaces and the light emitting surface ranges from 31 ° to 40 °, and the acute angle between the first light reflecting surface and the light emitting surface adjacent to the light incident surface side increases by 0.5 ° to 1 ° every time the acute angle between the light reflecting surface and the light emitting surface increases by one reflection surface in the longitudinal direction, the acute angle is gradually increased until the acute angle between the last reflecting surface adjacent to the terminal surface and the light-emitting surface is 40 degrees.

4. The blind spot warning light emitting apparatus for a vehicle rearview mirror according to claim 1, the light guide further includes a first side and a second side spaced apart in a transverse direction perpendicular to the longitudinal direction and perpendicular to the front-rear direction, the first side surface and the second side surface are respectively adjacent to the two sides of the light emitting surface, the action surface, the light incident surface and the terminal surface, the plurality of concave parts extend from the first side surface side edge to the second side surface side edge, the plurality of reflecting surfaces extend from the first side surface side edge to the second side surface side edge, the acute angle range formed between the plurality of reflecting surfaces and the light-emitting surface is calculated by the acute angle A between the first reflecting surface adjacent to the light-incident surface side and the light-emitting surface, and every time the acute angle A is increased in the longitudinal direction, the acute angle between the gradually increased reflecting surface and the light-emitting surface is gradually increased by 0.5-1 DEG until the last reflecting surface adjacent to the terminal surface.

5. The blind spot warning light emitting device according to claim 1, wherein two sides of each of the concave arc grooves formed on the light incident surface are respectively formed with a side edge, and the two side edges of each of the concave arc grooves are overlapped with one side edge of each of the adjacent concave arc grooves, and the width dimension between the two side edges of each of the concave arc grooves ranges from 0.5mm to 2 mm.

6. The blind spot warning light emitting device for a rearview mirror of a vehicle as claimed in claim 1, wherein the depth of any one of the concave arc grooves from the deepest bottom end to the light incident surface ranges from 0.5mm to 2 mm.

7. The blind spot warning light emitting device for the vehicle rearview mirror as claimed in claim 1, wherein the beam angle of the LED lamp ranges from 10 ° to 120 °.

8. The blind spot warning light emitting apparatus for the vehicle rearview mirror according to claim 1, wherein the beam angle of the LED lamp is 60 ° ± 10 °.

9. The blind spot warning light emitting device for a rearview mirror of a vehicle as claimed in claim 1, further comprising a shaping sheet attached to the light emitting surface of the light guide member, wherein the shaping sheet includes a shaping hole that is transparent to light, and the shaping hole is aligned with the light transmitting section of the lens.