CN217131129U

CN217131129U - Even LED car headlight of illumination for automotive lighting

Info

Publication number: CN217131129U
Application number: CN202221037296.0U
Authority: CN
Inventors: 蔺清维; 胡健
Original assignee: Chongqing Tianhua Lighting Co ltd
Current assignee: Chongqing Tianhua Lighting Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-05
Anticipated expiration: 2032-04-26

Abstract

The utility model provides a LED automobile headlamp with uniform illumination for automobile illumination, which comprises a headlamp bracket fixedly assembled with an LED automobile lamp inside, a bracket cover is detachably and fixedly connected at the upper end of the headlamp bracket, a light-emitting lens opposite to a light-transmitting surface of the LED automobile lamp is embedded on the bracket cover, a light guide plate is sequentially stacked in the hollow inner vertical axial direction of the bracket cover, the light guide plate is towards the light transmitting surface of the LED car lamp, the lower surface of the light guide plate is provided with a plurality of light guide salient points which are uniformly distributed, the side surface of the light guide plate is provided with a plurality of dentate light guide teeth edges, the upper surface of the light guide plate is seen from the lower surface of the light guide plate, the tooth depth of the light guide teeth edges on the side surface of the light guide plate is gradually increased, the side wall inside the support housing is provided with a reflecting film which is opposite to the side surface of the light guide plate, the reflecting film is provided with sawtooth edges on the surface of the side surface of the light guide plate, and the diffusion sheet is opposite to a light outlet lens on the support housing. This application jets out light even, has avoided the illumination of car light middle zone to be brighter and marginal area forms the dark space easily.

Description

Even LED car headlight of illumination for automotive lighting

Technical Field

The utility model relates to an automotive lighting technical field, concretely relates to even LED car headlight of illumination for automotive lighting.

Background

Because the LED has the characteristics of high brightness, rich color types, low power consumption and long service life, the LED is widely used in the technical field of automobile lighting, for example, the LED is used as a light source of an automobile headlamp. In recent years, the appearance of the automobile is more and more popular due to the design requirement, the aerodynamic requirement and the requirement of beauty, the shape of the headlight is also developed towards the heterotyping and integration, and the application amount of the LED automobile headlight is increased. However, the inventor of the present application has found that, in the conventional LED automobile headlamp, the light irradiation near the middle region of the lamp is bright, so that the light emitted from the optical lens of the lamp is not uniform, and a dark region is easily formed in the illumination edge region.

SUMMERY OF THE UTILITY MODEL

To in current LED car headlight, it is bright to shine near the light of car light middle zone, therefore leads to penetrating out the light of car light optical lens inhomogeneous, forms the technical problem of dark space in illumination edge zone region easily, the utility model provides an even LED car headlight is shone with illumination to automotive lighting.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an LED automobile headlamp with uniform illumination for automobile illumination comprises a headlamp support, an LED automobile lamp is fixedly assembled in the headlamp support, a support cover is detachably and fixedly connected to the upper end of the headlamp support, a light emitting lens opposite to a light transmitting surface of the LED automobile lamp is fixedly embedded on the support cover, a light guide plate, a brightness enhancement film and a diffusion film are sequentially stacked in the hollow inner part of the support cover in a vertical axial direction, the light guide plate faces the light transmitting surface of the LED automobile lamp, a plurality of light guide salient points are uniformly distributed on the lower surface of the light guide plate, a plurality of tooth-shaped light guide toothed edges are arranged on the side surface of the light guide plate, the depth of the light guide toothed edges on the side surface of the light guide plate is gradually increased when the lower surface of the light guide plate faces the upper surface, a reflecting film opposite to the side surface of the light guide plate is arranged on the inner side wall of the support cover, and sawtooth edges are arranged on the surface of the reflecting film facing the side surface of the light guide plate, the diffusion sheet is opposite to the light-emitting lens on the bracket cover.

Compared with the prior art, the LED automobile headlamp with uniform illumination for automobile illumination provided by the utility model has the advantages that the bracket cover can be disassembled and fixedly connected at the upper end of the existing headlamp bracket, the light guide plate, the brightness enhancement film and the diffusion film are sequentially stacked in the hollow interior of the bracket cover in the vertical axial direction, and on one hand, the lower surface of the light guide plate is provided with the light guide salient points, so that the light rays emitted from the light transmission surface of the LED automobile lamp can be uniformly emitted into the light guide plate; on the other hand, the side surface of the light guide plate is provided with a plurality of tooth-shaped light guide tooth ridges with gradually increased tooth depths from bottom to top, so that part of light refracted from the side surface of the light guide plate can enter the next connected light guide tooth ridge and can be more uniformly emitted out of the upper surface of the light guide plate after being totally reflected and then penetrate out of the light emitting lens, and therefore the phenomenon that light rays near the middle area of the automobile lamp in the LED automobile headlamp are brighter, so that the emitted light rays are not uniform and dark areas are easily formed in the illumination edge area is avoided; on the other hand, the sawtooth edges on the reflecting film can scatter the light emitted from the side surface of the light guide plate and reflect the light back into the light guide plate, so that the emitted light in the light guide plate is more uniform.

Furthermore, the frame body of headlight support is equipped with radial boss, be equipped with a plurality of mounting holes on the radial boss.

Further, a hollow base is integrally formed at the lower end of the headlamp support, a plurality of radiating through holes are formed in the upper end of the hollow base at intervals, a radiating outlet hole is formed in the lower end of the hollow base, and a micro fan located in the radiating hollow base is arranged at the radiating outlet hole through a support frame.

Further, the support frame includes two V type branches of mutual disposition, the both ends of two V type branches pass through screw and the lower tip fixed connection of cavity base, the summit of two V type branches is located the middle part that dispels the heat and holds the hole, the upside interval welding of two V type branches has a plurality of rings, the upside welding of a plurality of rings has the extension board, micro fan fixed mounting is in the upper surface of extension board.

Furthermore, the side wall of the upper end of the headlamp bracket is provided with a protrusion, and the inner wall of the bracket cover is provided with a recess which is matched with the protrusion in a fastening manner.

Drawings

Fig. 1 is a schematic structural view of the LED car headlamp with uniform illumination for car lighting.

Fig. 2 is a schematic view of the bottom structure of the hollow base provided by the present invention.

In the figure, 1, a headlight holder; 11. a radial boss; 12. mounting holes; 13. a protrusion; 2. an LED vehicle lamp; 21. a light-transmitting surface; 3. a bracket housing; 31. a light-emitting lens; 32. recessing; 4. a light guide plate; 41. light guide bumps; 42. a light guide tooth edge; 5. a brightness enhancement film; 6. a diffusion sheet; 7. a reflective film; 71. sawing a toothed edge; 8. a hollow base; 81. a heat dissipating through hole; 82. a heat dissipation outlet; 9. a support frame; 91. v-shaped branch bars; 92. a screw; 93. supporting a ring; 94. a support plate; 10. a micro fan.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides an LED car headlight with uniform illumination for car lighting, including a headlight bracket 1, an LED car light 2 fixedly mounted in the headlight bracket 1, and the specific fixing and mounting structure of the headlight bracket 1 and the LED car light 2 is known by those skilled in the art, and therefore will not be described herein again; the upper end of the headlamp support 1 is detachably and fixedly connected with a support cover 3, a light-emitting lens 31 opposite to a light-transmitting surface 21 of the LED vehicle lamp 2 is fixedly embedded on the support cover 3, the light-emitting lens 31 can be realized by adopting the same material and connection mode as the existing LED vehicle lamp optical lens, namely the light-emitting lens 31 is realized by substantially replacing the existing LED vehicle lamp optical lens, a light guide plate 4, a brightness enhancement film 5 and a diffusion sheet 6 are sequentially stacked in the hollow inner vertical axial direction of the support cover 3, the light guide plate 4 faces the light-transmitting surface 21 of the LED vehicle lamp 2, the lower surface of the light guide plate 4 is provided with a plurality of light guide salient points 41 which are uniformly distributed, the light guide salient points can be specifically made by silk-screen printing of the existing resin material, the side surface of the light guide plate 4 is provided with a plurality of dentate light guide teeth ribs 42, and viewed from the lower surface to the upper surface of the light guide plate 4, the depth of tooth of leaded light flute 42 on the 4 side surfaces of light guide plate enlarges gradually, the inside lateral wall of support housing 3 is provided with the reflectance coating 7 relative with 4 side surfaces of light guide plate, reflectance coating 7 is equipped with sawtooth flute 71 on the face towards 4 side surfaces of light guide plate, diffusion piece 6 is relative with light-emitting lens 31 on the support housing 3, membrane 5 that adds lustre to is used for gathering and improving luminance to light-emitting lens 31 direction, diffusion piece 6 is used for carrying out even scattering to light, membrane 5 that adds lustre to and diffusion piece 6 specifically can adopt current diaphragm to realize.

As a specific embodiment, please refer to fig. 1, a radial (horizontal direction shown in the figure) boss 11 is arranged on the frame body of the headlamp bracket 1, and a plurality of mounting holes 12 are arranged on the radial boss 11, so that the LED automobile headlamp is convenient to mount on an existing automobile, and the universality is strong.

As a specific embodiment, please refer to fig. 1, a hollow base 8 is integrally formed at a lower end of the headlamp bracket 1, a plurality of heat dissipation through holes 81 are formed at intervals at an upper end of the hollow base 8, that is, the heat dissipation through holes 81 are located at a lower end of the LED headlamp 2, a heat dissipation hole 82 is formed at a lower end of the hollow base 8, and a micro fan 10 located inside the hollow base 8 is disposed at the heat dissipation hole 82 through the support frame 9, so that the micro fan 10 is started to discharge heat generated by the LED headlamp 2 through the heat dissipation hole 82, thereby achieving effective heat dissipation of the LED headlamp and improving a service life of the LED headlamp.

As a specific embodiment, please refer to fig. 1 and fig. 2, the supporting frame 9 includes two V-shaped supporting bars 91 arranged oppositely, two ends of the two V-shaped supporting bars 91 are fixedly connected with the lower end of the hollow base 8 through screws 92, vertexes of the two V-shaped supporting bars 91 are located in the middle of the heat dissipation outlet 82, a plurality of supporting rings 93 are welded to upper sides of the two V-shaped supporting bars 91 at intervals, supporting plates 94 are welded to upper sides of the supporting rings 93, and the micro fan 10 is fixedly mounted on an upper surface of the supporting plates 94, so that a heat dissipation system similar to a wind tunnel is formed inside the hollow base 8, and thus the LED vehicle lamp 2 can be rapidly cooled by heat dissipation. Of course, those skilled in the art can also adopt other supporting structures to support and mount the micro-fan 10 on the basis of the supporting frame 9.

As a specific embodiment, referring to fig. 1, a protrusion 13 is disposed on an upper end side wall of the headlamp bracket 1, and a recess 32 that is in snap fit with the protrusion 13 is disposed on an inner wall of the bracket cover 3, so that the headlamp bracket 1 and the bracket cover 3 can be detachably connected by the snap fit of the protrusion 13 and the recess 32. Of course, the person skilled in the art can also fixedly connect the headlight holder 1 and the holder housing 3 by means of locking screws.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. An LED automobile headlamp with uniform illumination for automobile illumination comprises a headlamp support, wherein an LED automobile lamp is fixedly assembled in the headlamp support, and the LED automobile lamp is characterized in that a support cover is detachably and fixedly connected to the upper end of the headlamp support, a light emitting lens opposite to the light transmitting surface of the LED automobile lamp is fixedly embedded in the support cover, a light guide plate, a brightness enhancement film and a diffusion film are sequentially stacked in the hollow interior of the support cover in a vertical axial direction, the light guide plate faces the light transmitting surface of the LED automobile lamp, a plurality of light guide salient points which are uniformly distributed are arranged on the lower surface of the light guide plate, a plurality of tooth-shaped light guide teeth are arranged on the side surface of the light guide plate, when the lower surface of the light guide plate faces the upper surface, the tooth depth of the light guide teeth on the side surface of the light guide plate is gradually increased, a reflecting film opposite to the side surface of the light guide plate is arranged on the side wall of the reflecting film facing the side surface of the light guide plate, the diffusion sheet is opposite to the light-emitting lens on the bracket cover.

2. The LED automobile headlamp with uniform illumination for automobile illumination as claimed in claim 1, wherein the frame body of the headlamp bracket is provided with a radial boss, and the radial boss is provided with a plurality of mounting holes.

3. The LED automobile headlamp with uniform illumination for automobile illumination as claimed in claim 1, wherein the lower end of the headlamp bracket is integrally formed with a hollow base, the upper end of the hollow base is provided with a plurality of heat dissipating through holes at intervals, the lower end of the hollow base is provided with a heat dissipating hole, and the heat dissipating hole is provided with a micro fan inside the heat dissipating hollow base through a support frame.

4. The uniformly illuminated LED automobile headlamp for automobile lighting as claimed in claim 3, wherein the supporting frame comprises two V-shaped supporting bars arranged oppositely, two ends of the two V-shaped supporting bars are fixedly connected with the lower end of the hollow base through screws, the vertex of the two V-shaped supporting bars is located in the middle of the heat dissipating hole, a plurality of supporting rings are welded on the upper sides of the two V-shaped supporting bars at intervals, a supporting plate is welded on the upper sides of the supporting rings, and the micro fan is fixedly mounted on the upper surface of the supporting plate.

5. The LED automobile headlamp with uniform illumination for automobile illumination as claimed in claim 1, wherein the upper end side wall of the headlamp bracket is provided with a protrusion, and the inner wall of the bracket cover is provided with a recess which is in snap fit with the protrusion.