CN220958058U - Light guide plate and high-low beam lamp assembly - Google Patents

Abstract

The utility model discloses a light guide plate and a high-low beam light assembly, wherein the light guide plate comprises: the first light emitting surface is positioned above the extension plate and corresponds to the position of the first reflecting surface; the end face of the outermost side of the extension plate is a second light-emitting surface; the dipped headlight light of the utility model is composed of two parts, wherein part of light rays are directly irradiated forwards by the light rays emitted by the first light emitting surface, and part of light rays are transmitted along the extension plate after entering from the upper surface of the extension plate and then are emitted from the second light emitting surface, so that a larger irradiation range is obtained. The light rays entering from the second light inlet surface of the high beam lamp enter the extension plate after being totally reflected by the second reflecting surface, and are emitted from the second light outlet surface after being conducted along the extension plate. The high-low beam lamp assembly is compact in structure and convenient to assemble.

Description

Light guide plate and high-low beam lamp assembly

Technical field:

The utility model relates to the technical field of lamp products for vehicles, in particular to a light guide plate and a high-low beam lamp assembly adopting the light guide plate.

The background technology is as follows:

See Chinese patent number: 201921809883.5 discloses a car light optical element, which adopts the following technical scheme: the optical element of the car light comprises two optical parts, wherein the optical parts are bent and comprise a light gathering channel and a light guide channel which are connected with each other, and a reflecting surface is arranged at the joint of the light gathering channel and the light guide channel; one end of the light gathering channel is provided with a plurality of light gathering structures, and the front end of the light guide channel is provided with an emergent light surface; the two optical parts are arranged up and down, and the top and the bottom of the two light guide channels are connected. The two optical elements in the technical scheme are the light guide plates in the field, and the effect of the high beam and the low beam is realized through the two optical elements by the light sources arranged up and down.

Although in the above technical solution, it is proposed that two light source elements can be integrally formed, and the number of parts is reduced, the technical solution still has the following disadvantages: the high beam and the low beam are emitted through the emergent light surface at the front end of the light guide channel, so that the light efficiency of the high beam and the low beam is insufficient. For example, for a low beam of an automobile, the irradiation range for a short distance should be wide and a certain angle should be formed to irradiate the range on both sides of the automobile.

In addition, the light efficiency of the existing automobile headlight is single.

Based on the above problems, the present inventors have proposed the following technical solutions.

The utility model comprises the following steps:

The first technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a light guide plate used in an automobile high beam and low beam lamp assembly.

In order to solve the first technical problem, the utility model adopts the following technical scheme: the utility model provides a light guide plate, this light guide plate adopts integrated into one piece, the light guide plate include: the LED display device comprises a first light inlet surface positioned at the uppermost end, a second light inlet surface positioned at the lowermost end, a first reflecting surface corresponding to the first light inlet surface, a second reflecting surface corresponding to the second light inlet surface, a first light outlet surface and an extension plate formed by horizontally extending away from the first reflecting surface and the second reflecting surface, wherein the first light outlet surface is positioned above the extension plate and corresponds to the position of the first reflecting surface; the outermost end face of the extension plate is a second light-emitting surface, and the second light-emitting surface is a concave surface; light entering from the first light inlet surface is emitted from the first light outlet surface after being totally reflected by the first reflecting surface, and the light emitted from the first light outlet surface is directly irradiated forwards, or enters from the upper surface of the extension plate, is transmitted along the extension plate and is emitted from the second light outlet surface; the light entering from the second light inlet surface enters the extension plate after being totally reflected by the second reflecting surface, and is emitted from the second light outlet surface after being conducted along the extension plate.

In the above technical solution, the first light-entering surface is formed with a first light-condensing unit corresponding to the position of the light source illuminant; the second light inlet surface is formed with a second light condensing unit corresponding to the position of the light source illuminant.

In the above technical scheme, the first light-emitting surface is formed with longitudinally arranged grains, and the first light-emitting surface has a forward inclination angle.

In the above technical solution, the position of the extending plate extending horizontally corresponds to the combined area of the first reflecting surface and the second reflecting surface, and the upper surface of the extending plate is a stepped surface with high and low fluctuation.

In the above technical scheme, a light guide strip protruding downwards is formed in the middle area of the lower surface of the extension board, the end face of the outermost side of the light guide strip is a third light emitting surface, and the length of the light guide strip is shorter than that of the extension board, namely, the third light emitting surface is located below the extension board.

In the above technical solution, a partition plate opposite to the extending direction of the extension plate is formed in the combining area of the first reflecting surface and the second reflecting surface, and a third reflecting surface is formed in the middle of the end of the first reflecting surface, and at least part of the light entering from the first light inlet surface is reflected by the third reflecting surface and then emitted from the third light outlet surface.

The second technical problem to be solved by the utility model is to provide a high-low beam lamp assembly adopting the light guide plate.

In order to solve the second technical problem, the utility model adopts the following technical scheme: a high and low beam assembly, the high and low beam assembly comprising: a lens, a light guide plate, a first light source and a second light source, wherein the light guide plate is as claimed in one of claims; the first light source is positioned above the first light inlet surface in the light guide plate, and the second light source is positioned below the second light inlet surface in the light guide plate; the lens is a convex lens and is positioned in front of the second light-emitting surface of the light guide plate.

Further, in the above technical solution, the first light source includes: the LED lamp comprises a first substrate and a plurality of first light-emitting lamps distributed on the lower surface of the first substrate; the upper surface of the first substrate is fixed on the first radiator; the second light source includes: the first substrate and a plurality of first luminescent lamps distributed on the upper surface of the first substrate; the lower surface of the second substrate is fixed on the second radiator.

Furthermore, in the above technical scheme, the light guide plate comprises a bracket, wherein a hollow hole for installing the light guide plate is formed in the middle of the bracket, and an upper ear plate and a lower ear plate which are fixedly connected with the first radiator and the second radiator are respectively formed at the upper end and the lower end of the bracket.

In the above technical scheme, the lens is fixedly connected with the bracket through a lens holder, and a grating area is formed on the outer surface of the lens.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

For the light guide plate, first, the first light emitting surface is added on the light guide plate, and the light rays can obtain a larger transverse irradiation range through the first light emitting surface after being totally reflected by the first reflecting surface. Meanwhile, the light of the dipped headlight is composed of two parts, wherein part of the light is directly irradiated forwards by the light emitted by the first light emitting surface, and part of the light enters from the upper surface of the extension plate, is transmitted along the extension plate and then is emitted from the second light emitting surface. And a third light emitting surface formed by the outermost end surface of the light guide strip is added, part of light entering from the first light inlet surface is emitted from the third light emitting surface, and finally, the light enters from the light deleting area in the lens, so that special light effect is presented in the dipped headlight. Finally, when the light entering from the second light inlet surface is used as a high beam, the light is emitted from the second light outlet surface, and the concave surface of the second light outlet surface is used for forming a light gathering effect, so that the high beam is gathered more, and enough brightness is obtained.

For the high-low beam lamp assembly, the high-low beam lamp assembly is compact in overall structure and convenient to assemble.

Description of the drawings:

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is an exploded perspective view of the present utility model;

FIG. 3 is an exploded perspective view of another view of the present utility model;

fig. 4 is a perspective view of a light guide plate according to the present utility model;

fig. 5 is a perspective view of another view of the light guide plate according to the present utility model;

FIG. 6 is another front view of the light guide plate of the present utility model;

FIG. 7 is a schematic diagram of the operation of the present utility model;

FIG. 8 is a schematic diagram of the operation of the low beam lamp of the present utility model;

fig. 9 is a schematic diagram of the operation of the high beam lamp of the present utility model.

The specific embodiment is as follows:

The utility model will be further described with reference to specific examples and figures.

The utility model relates to a high and low beam lamp assembly for an automobile. As shown in fig. 1 to 3, the high-low beam assembly includes: a lens 1, a holder 2, a light guide plate 3, a first light source 4, a second light source 5, a first heat sink 6, a second heat sink 7, and a lens holder 8. Wherein the lenses 1 and the light guide plate 3 are distributed from front to back. The lens 1 is mounted on a lens holder 8 and is fixedly connected to the holder 2 via the lens holder 8. The light guide plate 3 is fixedly installed on the bracket 2, and the first light source 4 and the second light source 5 are respectively positioned at the upper end and the lower end of the light guide plate 3 and are respectively fixed with the first radiator 6 and the second radiator 7 so as to radiate heat. The first radiator 6 and the second radiator 7 are fixedly connected with the bracket 2.

The lens 1 adopts a convex lens, and all light rays are irradiated out after passing through the convex lens. In this embodiment, the inner side surface of the lens 1 is set to be a flat surface, and the outer side surface thereof is set to be a convex surface. The lens 1 has a circular overall shape and is fixed to the lens holder 8 at the position of the circular hole 80 at the front end thereof. The lens holder 8 is made of plastic material and is provided with a plurality of connecting support legs 81 extending towards the direction of the support 2, and the distance between the lens 1 and the light guide plate 3 is adjusted by the length of the connecting support legs 81, so that the optical parameters such as required focal length, refraction angle and the like are met.

The bracket 2 is made of plastic materials and is used as a bearing carrier of other parts. In this embodiment, the main body of the bracket 2 is annular, a hollow hole site 20 for installing the light guide plate 3 is provided in the middle of the main body, and an upper ear plate 21 and a lower ear plate 22 fixedly connected with the first radiator 6 and the second radiator 7 are respectively formed at the upper end and the lower end of the bracket 2. Two sides of the rear end face of the bracket 2 facing away from the lens 1 are respectively provided with a boss 23, and the boss 23 is used for receiving the light guide plate 3, namely, two sides of the light guide plate 3 are fixed on the two bosses 23 through screws.

As shown in fig. 4 to 6, the light guide plate 3 is integrally formed, and includes: the first light inlet surface 31 positioned at the uppermost end, the second light inlet surface 32 positioned at the lowermost end, the first reflecting surface 33 corresponding to the first light inlet surface 31, the second reflecting surface 34 corresponding to the second light inlet surface 32, the first light outlet surface 35, the extending plate 30 formed by horizontally extending away from the first reflecting surface 33 and the second reflecting surface 34, and the light guide strip 36 protruding downwards is formed in the middle area of the lower surface of the extending plate 30. The outermost end surface of the extension plate 30 is a second light-emitting surface 300, and the outermost end surface of the light guide bar 36 is a third light-emitting surface 360.

The first light inlet surface 31 and the second light inlet surface 32 are arranged up and down oppositely, the first light source 4 is located above the first light inlet surface 31, and the second light source 5 is located below the second light inlet surface 32. In order to form the light condensing effect, the first light incident surface 31 is formed with a first light condensing unit 310 corresponding to the position of the light source illuminant, and the second light incident surface 32 is formed with a second light condensing unit 320 corresponding to the position of the light source illuminant. The main bodies of the first light condensing unit 310 and the second light condensing unit 320 are shaped into a parabolic boss, a groove is formed at the top end of the boss, light generated by the illuminant is irradiated by the groove, and a light condensing effect is formed by a condensing surface formed on the inner surface of the parabolic boss.

The first reflecting surface 33 is an inclined surface, and is located below the first light inlet surface 31, and after the light enters from the first light inlet surface 31 by being irradiated downwards, total reflection occurs on the first reflecting surface 33, and the light is emitted towards the direction of the lens 1. Similarly, the second reflecting surface 34 is an inclined surface, which is located above the second light inlet surface 32, and after the light enters from the second light inlet surface 32, the light is totally reflected by the second reflecting surface 33 and is conducted along the extension plate 30.

The first light emitting surface 35 is located above the extension board 30 and corresponds to the position of the first reflecting surface 33. The first light-emitting surface 35 has a longitudinally disposed pattern 350 formed thereon. In this embodiment, the pattern 350 is a longitudinal stripe design, so that the light emitted from the first light-emitting surface 35 has a wider irradiation range in the horizontal direction. In addition, in general, the first light-emitting surface 35 has a forward inclination angle, so as to avoid the excessive angle of the emitted light.

The horizontal extending position of the extending plate 30 corresponds to the combining area of the first reflecting surface 33 and the second reflecting surface 34, the outermost end surface of the extending plate 30 is a second light emitting surface 300, the second light emitting surface 300 is a concave surface, and the light emitted from the extending plate 30 is converged through the concave surface.

As shown in fig. 6, the upper surface of the extension plate 30 is provided with a stepped surface with high and low fluctuation, and the design functions as follows: the light entering from the first light-entering surface 31 is emitted from the first light-exiting surface 35 after being totally reflected by the first reflecting surface 33, and a part of the light emitted from the first light-exiting surface 35 is directly irradiated forward, and a part of the light is irradiated onto the upper surface of the extension plate 30, enters into the extension plate 30, is transmitted along the extension plate 30, and is emitted from the second light-exiting surface 300. The upper surface of the extension plate 30 is designed as a stepped surface, so that the range of light can be adjusted, and finally, the irradiation range of the dipped headlight can be adjusted.

The light guide strip 36 is formed in a downward protruding manner in the middle area of the lower surface of the extension board 30, the light guide strip 36 and the whole light guide board 2 are still integrally formed, and the end surface of the outermost side of the light guide strip 36 is a third light emitting surface 360. The third light emitting surface 360 is used as a daytime light. The length of the light guide bar 36 is shorter than that of the extension board 30, that is, the third light emitting surface 360 is located below the extension board 30. Meanwhile, a partition 37 opposite to the extending direction of the extending plate 30 is formed in the joint area of the first reflecting surface 33 and the second reflecting surface 34, a third reflecting surface 38 is formed in the middle of the end of the first reflecting surface 33, and at least part of the light entering from the first light inlet surface 31 is reflected by the third reflecting surface 38 and then is emitted from the third light outlet surface 360.

The first light source 4 includes: a first substrate 41 and a plurality of first light-emitting lamps 42 distributed on a lower surface of the first substrate 41; the upper surface of the first substrate 41 is fixed on the first heat sink 6. The second light source 5 includes: a second substrate 51 and a plurality of second light emitting lamps 52 distributed on an upper surface of the second substrate 51; the lower surface of the second substrate 51 is fixed to the second heat sink 7.

The first light-emitting lamps 42 and the second light-emitting lamps 52 generally employ LED chips, and the distribution positions of the first light-emitting lamps 42 and the second light-emitting lamps 52 correspond to the positions of the first condensing unit 310 and the second condensing unit 320 described above.

As shown in fig. 7, when the present utility model works, the light emitters in the first light source 4 and the second light source 5 enter the light guide 3 from the upper and lower directions respectively, and finally enter the lens 1 after being emitted from the first light emitting surface 35, the second light emitting surface 300 and the third light emitting surface 360. The specific working principle is as follows:

In connection with fig. 8, this is a schematic diagram of the operation of the first light source 4 according to the utility model, which achieves the automotive low beam effect. The light generated by the first light-emitting lamp 42 in the first light source 4 is condensed by the first condensing unit 310 of the first light-in surface 31, vertically enters the light guide member 3 downwards, irradiates rightward after being totally reflected by the first reflecting surface 33, and is emitted from the first light-out surface 35, part of the light emitted from the first light-out surface 35 directly irradiates forward, and part of the light enters from the upper surface of the extension plate 30, is conducted along the extension plate 30 and is emitted from the second light-out surface 300. After these rays finally pass through the lens 1, a low beam effect is formed obliquely downward by the refractive effect of the lens 1.

In addition, the utility model can realize a special dipped headlight effect, when the first reflector 42 in the first light source 4 is lighted, part of the residual light irradiates the third reflecting surface 38, and after being reflected by the third reflecting surface 38, the light is emitted from the third light emitting surface 360, and after entering the lens 1, the light emitted from the third light emitting surface 360 is just emitted from the grating area 10 on the outer side surface of the lens 1, so that a special grating area can be formed in the dipped headlight area. The grating area can be designed as an enterprise logo, sign, etc. as required.

This is a schematic diagram of the operation of the second light source 5 of the present utility model, which achieves the automotive high beam effect, as shown in connection with fig. 9. The light generated by the second light-emitting lamp 52 in the second light source 5 is condensed by the second light condensing unit 320 on the second light-incoming surface 32, then vertically enters the light guide member 3 upwards, totally reflected by the second reflecting surface 34, enters the extension plate 30 rightward, is conducted along the extension plate 30, and then is emitted from the second light-outgoing surface 300. After the light finally passes through the lens 1, the refraction effect of the lens 1 is utilized to form a high beam effect which is inclined upwards.

It is understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.

Claims (10)

1. The light guide plate (3) is integrally formed, and is characterized in that the light guide plate (3) comprises: a first light inlet surface (31) positioned at the uppermost end, a second light inlet surface (32) positioned at the lowermost end, a first reflecting surface (33) corresponding to the first light inlet surface (31), a second reflecting surface (34) corresponding to the second light inlet surface (32), a first light outlet surface (35), and an extending plate (30) formed by horizontally extending away from the first reflecting surface (33) and the second reflecting surface (34),

The first light emitting surface (35) is positioned above the extension plate (30) and corresponds to the position of the first reflecting surface (33);

The outermost end surface of the extension plate (30) is a second light-emitting surface (300), and the second light-emitting surface (300) is a concave surface;

Light entering from the first light inlet surface (31) is emitted from the first light outlet surface (35) after being totally reflected by the first reflecting surface (33), and the light emitted from the first light outlet surface (35) is directly irradiated forwards, or enters from the upper surface of the extension plate (30), is transmitted along the extension plate (30) and is emitted from the second light outlet surface (300); light entering from the second light inlet surface (32) enters the extension plate (30) after being totally reflected by the second reflecting surface (34), is conducted along the extension plate (30), and then is emitted from the second light outlet surface (300).

2. A light guide plate according to claim 1, wherein: the first light inlet surface (31) is formed with a first light condensing unit (310) corresponding to the position of the light source illuminant; the second light inlet surface (32) is formed with a second light condensing unit (320) corresponding to the position of the light source illuminant.

3. A light guide plate according to claim 1, wherein: the surface of the first light-emitting surface (35) is provided with longitudinally arranged grains (350), and the first light-emitting surface (35) has a forward inclination angle.

4. A light guide plate according to claim 1, wherein: the horizontal extending position of the extending plate (30) corresponds to the combination area of the first reflecting surface (33) and the second reflecting surface (34), and the upper surface of the extending plate (30) is a stepped surface with high and low fluctuation.

5. A light guide plate according to claim 1, wherein: the middle area of the lower surface of the extension plate (30) is provided with a light guide strip (36) protruding downwards, the end face of the outermost side of the light guide strip (36) is a third light emitting surface (360), the length of the light guide strip (36) is shorter than that of the extension plate (30), namely, the third light emitting surface (360) is located below the extension plate (30).

6. A light guide plate as defined in claim 5, wherein: a partition plate (37) opposite to the extending direction of the extending plate (30) is formed in the joint area of the first reflecting surface (33) and the second reflecting surface (34), a third reflecting surface (38) is formed in the middle of the tail end of the first reflecting surface (33), and at least part of the light entering from the first light inlet surface (31) is reflected by the third reflecting surface (38) and then is emitted from the third light outlet surface (360).

7. A high and low beam assembly, the high and low beam assembly comprising: lens (1), light guide plate (3), first light source (4) and second light source (5), its characterized in that: the light guide plate (3) adopts the light guide plate as claimed in any one of claims 1 to 6;

The first light source (4) is positioned above the first light inlet surface (31) in the light guide plate (3), and the second light source (5) is positioned below the second light inlet surface (32) in the light guide plate (3);

the lens (1) is a convex lens and is positioned in front of the second light emitting surface (300) of the light guide plate (3).

8. The high and low beam light assembly as set forth in claim 7, wherein: the first light source (4) comprises: a first substrate (41) and a plurality of first light-emitting lamps (42) distributed on the lower surface of the first substrate (41); the upper surface of the first substrate (41) is fixed on the first radiator (6);

The second light source (5) comprises: a second substrate (51) and a plurality of second light-emitting lamps (52) distributed on the upper surface of the second substrate (51); the lower surface of the second base plate (51) is fixed on the second radiator (7).

9. The high and low beam light assembly as set forth in claim 8, wherein: the light guide plate is characterized by further comprising a support (2), wherein a hollow hole site (20) for installing the light guide plate (3) is arranged in the middle of the support (2), and an upper lug plate (21) and a lower lug plate (22) which are fixedly connected with the first radiator (6) and the second radiator (7) are respectively formed at the upper end and the lower end of the support (2).

10. The high and low beam light assembly as set forth in claim 7, wherein: the lens (1) is fixedly connected with the bracket (2) through a lens holder (8), and a grating area (10) is formed on the outer side surface of the lens (1).