A new energy automobile LED headlamp

Abstract

The utility model discloses a new energy automobile LED headlamp, including the lamp shell of arc bending, its front part inboard is inlayed and is equipped with the LED lamp body subassembly containing four hexagonal lamp groups along the arrangement of arc, and the back side is integrally provided with a plurality of mounting seats with coaxial connecting holes, and the inside corresponding lamp body subassembly has the U-shaped trapezoidal heat dissipation rib around the lamp group, and is surrounded with the lamp shell to form the through heat dissipation channel, the lamp body subassembly edge is clamped in the lamp shell annular recess, and the gap is filled with the sealed silica gel layer, and the adjacent lamp group is connected through the reinforcing rib. The device solves the problems of unstable installation, low heat dissipation efficiency, poor waterproof sealing and poor modeling adaptability of the existing headlamp, and through the symmetrical mounting seat, the through heat dissipation channel, the sealing structure and the adaptive lamp group design, realizes stable installation, efficient heat dissipation, reliable sealing and modeling fit, and is suitable for the field of new energy automobile headlamp.

Description

Technical Field

[0001] This utility model provides an LED headlight, and particularly relates to an LED headlight for new energy vehicles. Background Technology

[0002] As a core component of vehicle headlights, LED headlights for new energy vehicles serve the functions of nighttime illumination and styling display. Existing products generally use an arc-shaped one-piece molded lamp housing to support the LED lamp body assembly, and the lamp body is mostly a circular or rectangular lamp array. The back side is connected to the car lamp cavity bracket through 2 to 3 distributed mounting brackets, and the internal heat conduction relies on local flat heat dissipation fins. The lamp body and lamp housing are mostly directly fastened with clips or screws to meet basic assembly and lighting requirements.

[0003] The existing headlight components suffer from several drawbacks: insufficient mounting brackets with asymmetrical distribution, uncontrolled coaxiality of connection holes, and a tendency for headlights to loosen or shift due to vibration after assembly. The heat dissipation fins are scattered and fail to form a continuous channel, causing heat to accumulate inside the lamp housing and accelerating light decay. The gap between the lamp body and the lamp housing lacks a sealing structure, allowing rainwater to easily penetrate the lamp cavity and corrode circuit components. Furthermore, the round / rectangular lamp assembly does not match the contours of the curved lamp housing, resulting in misalignment between the luminous surface and the front face of the lamp housing, and no reinforced connection between adjacent lamp assemblies. This results in poor structural impact resistance and fails to meet the design requirements of stable installation, efficient heat dissipation, reliable sealing, and integrated styling. Utility Model Content

[0004] In order to solve the above problems, this application provides a new energy vehicle LED headlight that solves the existing technical problems of insufficient installation stability, low heat dissipation efficiency, poor waterproof sealing, and poor compatibility between the lamp assembly and the lamp housing shape.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a new energy vehicle LED headlight, comprising: a lamp housing that extends in an arc shape, wherein an LED lamp body assembly is embedded in the inner front part of the lamp housing;

[0006] The LED lamp body assembly includes four hexagonal lamp groups evenly arranged along the arc of the lamp housing;

[0007] The back side of the lamp housing is integrally provided with multiple mounting bases with connection holes;

[0008] The lamp housing has integrally formed heat dissipation ribs around the hexagonal lamp assembly, corresponding to the position of the LED lamp body assembly. The heat dissipation ribs and the lamp housing together form a through heat dissipation channel.

[0009] Preferably, there are three or more mounting bases, which are symmetrically distributed at intervals along the arc-shaped contour of the back side of the lamp housing, and the connection holes of each mounting base are coaxially arranged for fitting and connecting with the fixing bracket of the automotive lamp cavity.

[0010] Preferably, the heat dissipation ribs are U-shaped structures with trapezoidal cross-sections, with their openings facing the inner wall of the lamp housing, and both ends of the heat dissipation ribs are sealed to the sides of the lamp housing, so that the heat dissipation channel runs through the beginning and end of the lamp housing along the arc-shaped extension direction of the lamp housing.

[0011] Preferably, the six sides of the hexagonal lamp assembly are parallel and adapted to the arc-shaped contour of the front of the lamp housing, and the light-emitting surface of each hexagonal lamp assembly is coplanar with the front end surface of the lamp housing; adjacent hexagonal lamp assemblies are connected and fixed by reinforcing ribs.

[0012] Preferably, the inner front part of the lamp housing is provided with an annular groove, the edge of the LED lamp body assembly is fitted into the annular groove, and a sealing silicone layer is filled between the LED lamp body assembly and the lamp housing to achieve a waterproof and sealed connection.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0014] This device utilizes mounting bases symmetrically spaced on the back of the lamp housing with coaxial connecting holes to precisely fit the automotive lamp cavity mounting bracket, ensuring installation stability. It relies on U-shaped trapezoidal heat dissipation ribs surrounding the hexagonal lamp assembly inside the lamp housing, forming a continuous arc-shaped heat dissipation channel with the lamp housing, efficiently dissipating heat from the lamp assembly. The LED lamp body assembly is embedded in an annular groove at the front of the lamp housing, and a sealing silicone layer fills the gaps to achieve waterproof sealing. Four hexagonal lamp groups are evenly arranged along the arc of the lamp housing, with their sides parallel to the arc contour of the front of the lamp housing, and their luminous surfaces coplanar with the front face of the lamp housing. Adjacent lamp groups are connected by reinforcing ribs, a design that not only adapts to the arc shape of the lamp housing but also enhances the structural stability of the lamp body, ultimately achieving stable installation, efficient heat dissipation, reliable sealing, and shape compatibility.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an LED headlight for a new energy vehicle according to the present invention;

[0017] Figure 2 This is a three-dimensional rear view of an LED headlight for a new energy vehicle according to the present invention.

[0018] Figure 3 This is a three-dimensional schematic diagram of the internal lamp body of an LED headlight for a new energy vehicle according to the present invention.

[0019] Figure 4This is a cross-sectional view of an LED headlight for a new energy vehicle according to the present invention.

[0020] As shown in the figure:

[0021] 1. Lamp housing; 2. LED lamp body assembly; 3. Hexagonal lamp assembly; 4. Mounting base; 5. Heat dissipation fins. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figure 1 , 2 As shown in Figures 3 and 4, a new energy vehicle LED headlight includes a lamp housing 1 that extends in an arc shape. The lamp housing 1 has three or more mounting seats 4 that are symmetrically spaced along the arc contour and have coaxial connecting holes, which are adapted to the automotive lamp cavity fixing bracket to achieve stable installation. Inside the lamp housing 1, corresponding to the position of the LED lamp body assembly 2, there is an integrally formed heat dissipation rib 5 with a trapezoidal cross section. Its opening faces the inner wall of the lamp housing 1, and its two ends are sealed to the side of the lamp housing 1, forming a heat dissipation channel that runs through the end of the lamp housing 1 along the arc extension direction. The heat dissipation efficiency is improved through the through structure.

[0026] In this embodiment, the lamp housing 1 extends in an arc shape, with three or more mounting seats 4 integrally protruding from its back side symmetrically spaced along the arc contour. The connecting holes of each mounting seat 4 are coaxially arranged, precisely fitting with the automotive lamp cavity fixing bracket. Through multi-point symmetrical force and coaxial hole positioning, the problems of installation offset and insufficient stability caused by the scattered distribution of existing mounting seats are solved. Inside the lamp housing 1, corresponding to the position of the LED lamp body assembly 2, there is an integrally formed U-shaped heat dissipation rib 5 with a trapezoidal cross section. Its opening faces the inner wall of the lamp housing 1, and its two ends are sealed to the side of the lamp housing 1. The heat dissipation rib 5 and the lamp housing 1 together form a heat dissipation channel that runs through the entire length of the lamp housing 1 along the arc extension direction. Compared with the existing local heat dissipation structure, this through channel can use air convection to accelerate heat conduction. At the same time, the U-shaped structure with a trapezoidal cross section increases the heat dissipation area, effectively solving the problems of heat accumulation and low heat dissipation efficiency when the LED lamp assembly is working. Moreover, the design of the heat dissipation rib and the lamp housing being integrally formed improves the structural strength and avoids separate assembly. The resulting heat dissipation performance loss; the LED lamp body assembly 2 embedded on the inner front part of the lamp housing 1 includes four hexagonal lamp groups 3 evenly arranged along the arc of the lamp housing 1. The six sides of the hexagonal lamp group 3 are parallel and adapted to the arc contour of the front part of the lamp housing 1, and the light-emitting surface is coplanar with the front end face of the lamp housing 1. Adjacent hexagonal lamp groups 3 are connected and fixed by reinforcing ribs. At the same time, the edge of the LED lamp body assembly 2 is embedded in the annular groove at the front of the lamp housing 1, and the space between the two is filled with a sealing silicone layer. The sealing silicone layer solves the problem of easy water leakage in the assembly gap between the lamp body and the lamp housing, thus improving the waterproof sealing performance. The adaptation and coplanar design of the hexagonal lamp group and the arc of the lamp housing ensure the integration and fit of the shape, avoiding the problem of poor compatibility between the existing round or rectangular lamp groups and the arc lamp housing, which leads to insufficient aesthetics and lighting dead angles. Furthermore, the reinforcing ribs connect the scattered lamp groups into a stable whole, effectively resisting vibration and impact, solving the problem of easy loosening when a single lamp group is installed independently, and further improving the structural stability of the LED lamp body assembly 2.

[0027] In actual use, this device requires stainless steel bolts, as used in existing technology, to pass through the connection holes of the mounting base 4 and securely connect to the metal mounting bracket of the automotive lamp cavity. The LED lamp assembly 2 needs to be connected to the 12V DC power supply line inside the car via a copper core wire harness, and an existing automotive relay and fuse need to be connected in series in the line to achieve circuit protection and on / off control. The lamp housing 1 and the one-piece heat dissipation fins 5 can be die-cast from 6061 aluminum alloy (which combines lightweight and high thermal conductivity), or injection molded from ABS+PC alloy material (suitable for low-cost scenarios). The LED lamp assembly 3... The light-emitting chip uses an InGaN-based blue LED paired with yttrium aluminum garnet phosphor to achieve white light output. The sealing silicone layer uses methyl vinyl silicone rubber with a Shore A hardness of 70 degrees (resistant to high and low temperatures and with excellent sealing performance). At the same time, the dust cover pre-installed inside the automotive lamp cavity must fit against the front end face of the lamp housing 1, and its edges are fixed by a snap-fit ​​structure of existing technology. The side wall of the lamp cavity must be opened with ventilation holes that correspond to and connect with the heat dissipation channel of this device. By using the airflow during vehicle movement or the built-in micro fan in the lamp cavity (existing technology), the airflow in the heat dissipation channel is accelerated, further improving the heat dissipation effect and ensuring the stable operation of the overall system.

[0028] Specifically, in actual implementation, this solution requires pre-calibrating the relative position of the lamp housing 1 and the automotive lamp cavity using a laser positioning device from existing technology. This ensures that the coaxiality error between the connection hole of the mounting base 4 and the hole of the fixing bracket does not exceed 0.5mm. Then, a torque wrench (preset to 8-10 N·m torque) is used to sequentially tighten the stainless steel bolts through the connection holes, avoiding installation misalignment caused by excessive looseness or tightness. The power supply line of the LED lamp assembly 2 needs to be connected to the automotive wiring harness using existing waterproof connectors. The connectors should be round metal joints with IP6K9K protection rating, and their tails should be sealed with heat shrink tubing. If the lamp housing 1 is made of aluminum alloy, it needs to be... The anodizing process forms a 5-10μm thick oxide film (improving corrosion resistance). If the material is plastic, surface powder coating (using weather-resistant acrylic paint) is required. In addition, the vehicle's body control module (BCM, prior art) needs to adjust the luminous power of the LED light group 3 through PWM signals to achieve low beam / high beam switching (by controlling the lighting of some light groups or adjusting the current). It also needs to work with the existing light sensor to adjust the brightness in real time. When oncoming vehicle lights are detected, the BCM sends a signal to turn off some hexagonal light groups 3 to avoid glare. These existing implementation methods work together with the structure of this device to form a complete assembly, control and protection system.

[0029] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A new energy vehicle LED headlight, characterized in that, include: The lamp housing (1) extends in an arc shape, and an LED lamp body assembly (2) is embedded in the inner front part of the lamp housing (1); The LED lamp body assembly (2) includes four hexagonal lamp groups (3) evenly arranged along the arc direction of the lamp housing (1); The back side of the lamp housing (1) is integrally provided with multiple mounting bases (4) with connecting holes; The lamp housing (1) has a heat dissipation rib (5) integrally formed around the hexagonal lamp group (3) at the position corresponding to the LED lamp body assembly (2). The heat dissipation rib (5) and the lamp housing (1) together form a through heat dissipation channel.

2. The LED headlight for new energy vehicles according to claim 1, characterized in that: The mounting base (4) has three or more, which are symmetrically distributed along the arc-shaped contour of the back side of the lamp housing (1), and the connecting holes of each mounting base (4) are coaxially arranged for use in adapting and connecting with the fixed bracket of the automotive lamp cavity.

3. The LED headlight for new energy vehicles according to claim 1, characterized in that: The heat dissipation rib (5) is a U-shaped structure with a trapezoidal cross section. Its opening faces the inner wall of the lamp housing (1), and the two ends of the heat dissipation rib (5) are sealed to the side of the lamp housing (1), so that the heat dissipation channel runs through the beginning and end of the lamp housing (1) along the arc extension direction of the lamp housing (1).

4. The LED headlight for new energy vehicles according to claim 1, characterized in that: The six sides of the hexagonal lamp group (3) are parallel to and adapted to the arc-shaped outline of the front part of the lamp housing (1), and the light-emitting surface of each hexagonal lamp group (3) is coplanar with the front end surface of the lamp housing (1); adjacent hexagonal lamp groups (3) are connected and fixed by reinforcing ribs.

5. The LED headlight for new energy vehicles according to claim 1, characterized in that: The lamp housing (1) has an annular groove on the inner front side. The edge of the LED lamp body assembly (2) is fitted into the annular groove, and a sealing silicone layer is filled between the LED lamp body assembly (2) and the lamp housing (1) to achieve a waterproof and sealed connection.

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