Radiator and lamp thereof

Abstract

The utility model discloses a radiator and a lamp thereof, and aims to overcome the defect of poor visual impression caused by the fact that the position, corresponding to a high beam, of an existing lamp body does not emit light. The heat transfer part is used for being attached to a PCB, the reflection part is connected to the edge of the heat transfer part, the heat dissipation part is connected to the heat transfer part, an included angle is formed between the reflection part and the heat transfer part, and a stripe structure used for reflecting a light path is arranged on the surface of the reflection part. A stripe structure is arranged on the radiator, and the light path is changed, so that the whole outer lens is bright in a dipped headlight mode, the light pattern distribution is optimized, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of vehicle lamps, and more specifically, to a radiator and a lamp thereof. Background Art

[0002] Headlights include low beam and high beam. The light paths of low beam and high beam are designed differently, where low beam and high beam illuminate the front of the headlight respectively. In some headlight designs, low beam and high beam use different lampshades and are located in different positions.

[0003] This design has certain problems, that is, when the low beam is turned on, the position of the high beam will not emit light, which will create a visual sense of emptiness and reduce the viewing angle of the headlights.

[0004] Based on the deficiencies of existing lamp bodies, the present application aims to provide a heat sink and a lamp thereof. Summary of the invention

[0005] The utility model overcomes the deficiency of the existing lamp body that does not emit light at the high beam, resulting in poor visual perception, and provides a radiator and a lamp thereof, which can improve the light distribution without significantly increasing the cost and changing the structure, so that in the low beam mode, the outer lens is in a state of being completely lit, thereby improving the aesthetics and safety.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A heat sink comprises a heat transfer portion for attaching to a PCB board, a reflective portion connected to the edge of the heat transfer portion, and a heat dissipation portion connected to the heat transfer portion, an angle is arranged between the reflective portion and the heat transfer portion, and a stripe structure for reflecting a light path is arranged on the surface of the reflective portion.

[0008] The radiator is a necessary component in the lamp, which plays the role of heat transfer and heat dissipation. The material of the radiator is generally good thermal conductor such as aluminum or copper.

[0009] The heat transfer part is connected to the PCB board. The PCB board generates a lot of heat during the light-emitting process, which is transferred to the heat transfer part through heat conduction. The heat transfer part then transfers the heat to the heat dissipation part. The heat dissipation part is a heat dissipation fin in some technical solutions. The heat dissipation is achieved by exchanging heat with the air through more surfaces of the heat dissipation part.

[0010] The reflector plays a reflective role. The light source is reflected by the reflector cover and irradiated on the reflector. The stripe structure on the surface of the reflector scatters the light to avoid glare caused by excessive concentration of light. The function of this structure is to illuminate the high beam position corresponding to the outer lens, so that the entire outer lens is illuminated.

[0011] The angle is used to form a light path. The light source diverges into the spherical space, and local light is emitted diagonally upwards directly or after being reflected by the reflector. The remaining part that is originally unusable downwards is reflected by the reflector that is tilted downwards, making full use of the light that is originally unusable. This makes the overall brightness higher, fully utilizes energy, and improves the appearance of the entire lamp body.

[0012] Preferably, the stripe structure includes a plurality of concave-convex structures, and the concave-convex structures are used to achieve the diffuse reflection effect.

[0013] Preferably, the stripe structures at various locations along the length direction of the reflective portion have the same shape.

[0014] Preferably, the stripe structures at different locations along the length of the reflective portion have different shapes. The structure further weakens the regularity of the light path, thereby avoiding glare at a certain viewing angle, which affects safety.

[0015] Preferably, the reflective portion includes a slope portion and a flat portion, the slope portion is connected to the heat transfer portion, the flat portion is connected to an end of the slope portion away from the heat transfer portion, and the stripe structure is arranged on at least one of the slope portion and the flat portion. The structure provides two reflective positions with different tilt states and different positions, and by arranging the stripe structure at the positions, the light path can be further adjusted, thereby obtaining a more uniform light pattern performance.

[0016] Preferably, the stripe structure is a combination of one or more concave or convex polygons and arcs. The polygonal structure includes triangles, rectangles, trapezoids, etc., and the arc includes various arcs such as circular arcs, elliptical arcs, parabolic arcs, etc.

[0017] Preferably, the striped structure is laid on a radiator.

[0018] Preferably, the stripe structure is an integrated structure with the heat sink.

[0019] A lamp comprises a PCB board, a high beam lamp bead electrically connected to the PCB board, a reflector arranged on the surface of the PCB board, and a heat sink attached to the other side of the PCB board, the heat sink is the heat sink as described above, and an auxiliary lamp bead is arranged on the PCB board, and the auxiliary lamp bead is located outside the focus of the reflector.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) A stripe structure is set on the radiator to change the light path so that the entire outer lens is bright in low beam mode, optimizing the light distribution and improving driving safety;

[0022] (2) The modification does not require a complex optical system, thus reducing manufacturing costs and the weight of the lamp;

[0023] (3) By adding auxiliary lamp beads near the high-beam lamp beads and laying multiple stripes on the radiator, the entire outer lens can be illuminated in the low-beam mode, avoiding the visual sense of emptiness and improving the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the utility model;

[0025] Figure 2 It is a schematic diagram of the optical path of the utility model;

[0026] Figure 3 is a schematic diagram of an embodiment of the stripe structure at A;

[0027] In the figure:

[0028] The heat transfer part 1 , the heat dissipation part 2 , the reflection part 3 , the slope part 31 , the plane part 32 , the stripe structure 4 , the high beam lamp bead 51 , the auxiliary lamp bead 52 , the reflector 6 , and the PCB board 7 . DETAILED DESCRIPTION

[0029] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0033] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0034] Example:

[0035] A radiator, Figure 1 , 2 As shown, it includes a heat transfer part 1 for attaching to a PCB board 7, a reflective part 3 connected to the edge of the heat transfer part 1, and a heat dissipation part 2 connected to the heat transfer part 1, and an angle is set between the reflective part 3 and the heat transfer part 1. The radiator is a necessary component in the lamp, which plays a role in heat transfer and heat dissipation. The material of the radiator is generally good heat conductor such as aluminum or copper.

[0036] The heat transfer part 1 is connected to the PCB board 7. The PCB board 7 generates a lot of heat during the light-emitting process, which is transferred to the heat transfer part 1 through heat conduction. The heat transfer part 1 then transfers the heat to the heat dissipation part 2. The heat dissipation part 2 is a heat dissipation fin in some technical solutions. Heat is exchanged with air through more surfaces of the heat dissipation part 2, thereby achieving heat dissipation. The heat dissipation part 2 is arranged on a side away from the PCB board 7.

[0037] The surface of the reflector 3 is provided with a stripe structure 4 for reflecting the light path. The reflector 3 plays a reflective role. The light source is reflected by the reflector cover and irradiates the reflector 3. The stripe structure 4 on the surface of the reflector 3 scatters the light to avoid glare caused by excessive concentration of light. The function of this structure is to illuminate the high beam position corresponding to the outer lens, so that the entire outer lens is illuminated.

[0038] The angle is used to form a light path. The light source diverges into the spherical space, and local light is emitted obliquely upwards directly or after being reflected by the reflector. The remaining part that is originally unusable downwards is reflected by the reflector 3 that is inclined downwards, making full use of the light that is originally unusable. This makes the overall brightness higher, fully utilizes energy, and improves the appearance of the entire lamp body.

[0039] In some embodiments, the stripe structures 4 at various locations along the length of the reflective portion 3 have the same shape. In other embodiments, the stripe structures 4 at various locations along the length of the reflective portion 3 have different shapes. The structure further weakens the regularity of the light path, thereby avoiding glare at a certain viewing angle, which affects safety.

[0040] The reflective portion 3 includes a slope portion 31 and a flat portion 32, wherein the slope portion 31 is connected to the heat transfer portion 1, and the flat portion 32 is connected to an end of the slope portion 31 away from the heat transfer portion 1, and the stripe structure 4 is disposed on at least one of the slope portion 31 and the flat portion 32. The structure provides two reflective positions with different tilt states and different positions, and by disposing the stripe structure 4 at the positions, the optical path can be further adjusted, thereby obtaining a more uniform light pattern performance.

[0041] In some embodiments, the stripe structure 4 is located on the slope portion 31 , in other embodiments, the stripe structure 4 is located on the plane portion 32 ; in still other embodiments, the stripe structure 4 exists on both the slope portion 31 and the plane portion 32 .

[0042] Ginseng Figure 3 As shown, the stripe structure 4 includes a plurality of concave-convex structures. The concave-convex structures are used to achieve the diffuse reflection effect. Specifically, the stripe structure 4 is a combination of one or more concave or convex polygons and arcs. The polygonal structure includes a triangle, a rectangle, a trapezoid, etc., and the arc includes a circular arc, an elliptical arc, a parabola arc, and other arcs.

[0043] In some embodiments, the striped structure 4 is laid on the heat sink and installed on the heat sink by gluing or snapping; in other embodiments, the striped structure 4 is an integral structure with the heat sink, for example, deformation is directly made on the surface of the heat sink to produce bumps and depressions.

[0044] A lamp includes a plurality of low beam lamps and high beam lamps arranged in an array, sharing the same outer lens. The high beam lamp includes a PCB board 7, a high beam lamp bead 51 electrically connected to the PCB board 7, a reflector 6 arranged on the surface of the PCB board 7, and a heat sink attached to the other side of the PCB board 7, the heat sink is the heat sink described above, and an auxiliary lamp bead 52 is arranged on the PCB board 7, and the auxiliary lamp bead 52 is located outside the focus of the reflector 6.

[0045] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A radiator, characterized in that: It includes a heat transfer part for bonding to a PCB board, a reflective part connected to the edge of the heat transfer part, and a heat dissipation part connected to the heat transfer part. An angle is set between the reflective part and the heat transfer part, and a stripe structure for reflecting the light path is set on the surface of the reflective part.

2. A radiator according to claim 1, characterized in that: The stripe structure includes a plurality of concave-convex structures.

3. A radiator according to claim 1, characterized in that: The stripe structure shape is the same at all locations along the length direction of the reflective part.

4. A radiator according to claim 1, characterized in that: The stripe structure shapes at different locations along the length of the reflective part are different.

5. The radiator according to claim 1, characterized in that: The reflective portion includes a slope portion and a flat portion, the slope portion is connected to the heat transfer portion, the flat portion is connected to one end of the slope portion away from the heat transfer portion, and the stripe structure is arranged on at least one of the slope portion and the flat portion.

6. A radiator according to claim 2, characterized in that: The stripe structure is a combination of one or more types of polygons, arcs, etc. that are concave or convex.

7. The radiator according to claim 1, characterized in that: The striped structure is laid on the radiator.

8. The radiator according to claim 1, characterized in that: The stripe structure is an integrated structure with the heat sink.

9. A lamp, comprising a PCB board, a high beam lamp bead electrically connected to the PCB board, a reflector arranged on the surface of the PCB board, and a heat sink attached to the other side of the PCB board, wherein: The radiator is a radiator as claimed in any one of claims 1 to 8, and an auxiliary lamp bead is arranged on the PCB board, and the auxiliary lamp bead is located outside the focus of the reflector.

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