LED car lamp

Abstract

The utility model provides an LED automobile lamp, which relates to the technical field of automobile lamps and comprises a lamp holder, a lamp cap, a radiating sleeve, an LED light source component and a circuit board. The lamp holder is annular; the lamp cap is arranged at the lower end of the lamp holder and used for being electrically connected with an external power source, and the interior of the lamp cap is matched with the inner ring space of the lamp holder to form a containing cavity. The radiating sleeve is in contact with the upper part of the lamp holder; the LED light source assembly comprises a plurality of side LED light source assemblies which are arranged at intervals, vertically extend and are arranged on the periphery of the heat dissipation sleeve in a contact mode. The circuit board is arranged in the containing cavity and used for conductively communicating the lamp holder with the LED light source assembly. The periphery of the heat dissipation sleeve and the interval area of the LED light source assembly on the corresponding side are provided with vertically-extending heat dissipation reflection conical strips. Therefore, the LED lamp has the advantages of good heat dissipation effect and light condensation.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to an LED lamp. Background Art

[0002] With the popularity of LED headlights, the requirements for heat dissipation in limited installation spaces are also increasing. The heat dissipation effect of LED headlights directly affects the power of LED headlights. If the heat dissipation is poor, it is easy to cause light attenuation or even burn out electronic components.

[0003] Currently, LED headlights typically consist of a heat sink sleeve, an LED light source assembly with LED beads, spaced apart and extending vertically and contacting the outer periphery of the heat sink sleeve, and a circuit board. Heat generated by the LED light source assembly is dissipated through the area of ​​the heat sink sleeve where the LED light source assembly is not mounted. However, this technical solution also has some shortcomings, such as the limited heat dissipation area of ​​the heat sink sleeve and the diffuse light emitted by the LED beads in the LED light source assembly, resulting in poor focusing effect.

[0004] Therefore, an LED car lamp with good heat dissipation effect and focusing effect needs to be designed. Utility Model Content

[0005] The purpose of the present invention is to provide an LED car lamp to address the defects and shortcomings of the existing technology, at least solving one of the above technical problems, and having the advantages of good heat dissipation and light focusing.

[0006] To achieve the above objectives, the present invention provides an LED vehicle lamp, comprising:

[0007] The lamp holder is ring-shaped;

[0008] A lamp holder, disposed at the lower end of the lamp holder, for electrically connecting to an external power source, the interior of the lamp holder cooperating with the inner annular space of the lamp holder to form a receiving cavity;

[0009] a heat dissipation sleeve, contacting and configured on the upper portion of the lamp holder;

[0010] The LED light source assembly includes a plurality of side LED light source assemblies spaced apart, extending vertically, and contacting the outer periphery of the heat dissipation sleeve;

[0011] A circuit board is disposed in the accommodating cavity and is used for electrically connecting the lamp holder and the LED light source assembly;

[0012] Wherein, the outer periphery of the heat dissipation sleeve and the spacing area corresponding to the side LED light source assembly are configured with vertically extending heat dissipation reflective vertebral bars.

[0013] Optionally, the cross-section of the heat dissipation and reflective vertebral strip is an arc-bottom trapezoid with an upper base and a lower base being concentric arcs.

[0014] Optionally, the peripheral wall of the heat dissipation sleeve and parts of the lower bottom surfaces of two adjacent heat dissipation reflective vertebral bars cooperate to form a limiting groove for fixing the side LED light source assembly.

[0015] Optionally, the LED car light also includes: a lampshade; the LED light source assembly also includes a top LED light source assembly connected to the end of the side LED light source assembly away from the lamp holder; a plurality of first LED light sources are mounted on the top of the top LED light source assembly; the lampshade covers and fixes the top LED light source assembly on the end of the heat dissipation sleeve away from the lamp holder, and is provided with a light-transmitting hole corresponding to the first LED light source.

[0016] Optionally, three of the first LED light sources are mounted in a triangle shape on the top of the top LED light source assembly; three of the light-transmitting holes are correspondingly arranged in a triangle shape on the lampshade; and the first LED light source is located in the light-transmitting holes.

[0017] Optionally, the lower bottom surface of the heat dissipation reflective vertebral bar extends in a direction away from the lamp holder to form a clip; the inner peripheral wall of the lampshade can press against the clip, so that a plurality of the clips clamp the peripheral wall of the top LED light source assembly.

[0018] Optionally, the lower bottom surface of the heat dissipation reflective vertebral bar extends toward the lamp holder to form a connecting piece; the outer periphery of several of the connecting pieces has an external thread; the inner wall of the lamp holder away from the end of the lamp head has an internal thread that cooperates with the external thread.

[0019] Optionally, the four side LED light source assemblies are evenly spaced and arranged on the periphery of the heat dissipation sleeve; the periphery of the heat dissipation sleeve is correspondingly provided with four heat dissipation reflective vertebral bars; and the side LED light source assembly is vertically mounted with a plurality of second LED light sources.

[0020] Optionally, at least a portion of the peripheral wall of the lamp holder has heat dissipation protrusions arranged in the shape of corn kernels.

[0021] Optionally, a circle of heat dissipation protruding teeth of the lamp holder close to the heat dissipation sleeve is transitioned through a guide bevel surface; a circle of heat dissipation protruding teeth of the lamp holder away from the heat dissipation sleeve is transitioned through a guide arc surface.

[0022] Compared with the prior art, the advantages of this application are:

[0023] Since the outer periphery of the heat dissipation sleeve and the spacing area of ​​the corresponding side LED light source assembly are equipped with vertically extending heat dissipation reflective vertebral bars, it has a larger heat dissipation area, which gives it the advantage of good heat dissipation effect; in addition, the conical surfaces on both sides of the heat dissipation reflective vertebral bars can reflect the light diverging from the side LED light source assembly to the surroundings, so that the divergent light is reflected and converged, thus giving it a focusing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the lamp cap and lamp holder assembled in accordance with an embodiment of the present invention;

[0028] Figure 4 This is a front view of the assembly of the lamp cap and lamp holder according to an embodiment of the utility model;

[0029] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0030] Figure 6 for Figure 4 A partial enlarged view of point B in the middle;

[0031] Figure 7 This is a structural diagram of a heat dissipation sleeve according to an embodiment of the present utility model;

[0032] Figure 8 This is a top view of the heat dissipation sleeve according to an embodiment of the present utility model.

[0033] Description of Reference Numerals

[0034] 100-LED headlights;

[0035] 1-lamp holder; 11-conductive contact; 12-clamping bump;

[0036] 2-lamp holder; 21-internal thread; 22-heat dissipation convex teeth; 22a-guide bevel surface; 22b-arc guide surface;

[0037] 3-heat dissipation sleeve; 31-heat dissipation reflective vertebral bar; 311-conical surface; 312-upper bottom; 313-lower bottom; 314-waist; c-limiting groove; 32-clamping piece; 33-connecting piece; 33d-external thread;

[0038] 4-LED light source assembly; 41-side LED light source assembly; 411-second LED light source; 42-top LED light source assembly; 421-first LED light source;

[0039] 5-lampshade; o-light hole;

[0040] f-accommodation cavity. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in the present invention to indicate positions or positional relationships are based on the positions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limiting the present invention. In addition, terms such as first and second are used only to distinguish multiple components or structures having the same or similar structures and do not represent any special limitation on the arrangement order or connection relationship.

[0043] Please refer to Figures 1 to 8 The embodiment of the present invention provides an LED vehicle lamp 100, comprising: a lamp holder 2, a lamp head 1, a heat dissipation sleeve 3, an LED light source assembly 4 and a circuit board (not shown in the figure).

[0044] The lamp holder 2 is annular and preferably made of a material with good thermal conductivity, such as aluminum.

[0045] The lamp cap 1 is disposed at the lower end of the lamp holder 2 for electrically connecting to an external power source (not shown in the figure), and its interior cooperates with the inner annular space of the lamp holder 2 to form an accommodating cavity f.

[0046] The heat dissipation sleeve 3 is disposed in contact with the upper portion of the lamp holder 2 and is used to quickly dissipate the heat generated by the LED light source assembly 4 into the external air. Preferably, the heat dissipation sleeve 3 is made of a material with good thermal conductivity, such as aluminum.

[0047] The LED light source assembly 4 includes a plurality of side LED light source assemblies 41 spaced apart and extending vertically and contacting the outer periphery of the heat dissipation sleeve 3. In this way, the heat generated by the side LED light source assemblies 41 can be quickly transferred to the surface of the heat dissipation sleeve 3 through thermal contact.

[0048] The circuit board is disposed in the accommodating cavity f and is used for electrically connecting the lamp holder 1 and the LED light source assembly 4. Specifically, the circuit board is a prior art, so it will not be elaborated here, as long as it can realize the control of the LED light source assembly 4.

[0049] Vertically extending heat-dissipating reflective ribs 31 are located on the outer periphery of the heat-dissipating sleeve 3, in the areas spaced apart from the corresponding side LED light source assemblies 41. As will be appreciated, the tapered surfaces 311 on either side of the heat-dissipating reflective ribs 31 form an angle α with the diameter of the heat-dissipating sleeve 3, thereby reflecting and converging the light emitted by the side LED light source assemblies 41.

[0050] Since the outer periphery of the heat dissipation sleeve 3 and the spacing area of ​​the corresponding side LED light source assembly 41 are equipped with vertically extending heat dissipation reflective vertebral bars 31, it has a larger heat dissipation area, which gives it the advantage of good heat dissipation effect; in addition, the conical surfaces 311 on both sides of the heat dissipation reflective vertebral bars 31 can reflect the light diverging to the surroundings from the LED light source unit, so that the divergent light is reflected and converged, thus giving it a focusing effect.

[0051] Alternatively, see Figure 7 and Figure 8 In this embodiment, the cross-section of the heat-dissipating reflective rib 31 is a trapezoidal shape with an upper base 312 and a lower base 313 forming concentric arcs. As can be understood, the upper base 312 and lower base 313 of the trapezoidal shape lie on concentric circles with different radii, centered on the center of the cross-section of the heat-dissipating sleeve 3, with the upper base 312 located outside the lower base 313. The tapered surfaces 311 on either side of the heat-dissipating reflective rib 31 form the two waists 314 of the trapezoidal shape. This allows the light emitted by the side LED light source assembly 41 to be reflected and converged by the tapered surfaces 311 on either side of the heat-dissipating reflective rib 31.

[0052] In order to realize the assembly of the side LED light source assembly 41 and the heat dissipation sleeve 3, optionally, please refer to Figure 7 and Figure 8In this embodiment, the peripheral wall of the heat dissipation sleeve 3 and portions of the lower base 313 of two adjacent heat dissipation reflective ribs 31 cooperate to form a retaining groove c for securing the side LED light source assembly 41. Thus, during assembly, several side LED light source assemblies 41 can be snapped into the retaining groove c from the end of the heat dissipation sleeve 3 away from the lamp holder 1, achieving assembly and fixation with the heat dissipation sleeve 3.

[0053] Alternatively, see Figure 1 and Figure 2 In this embodiment, the LED car lamp 100 further includes a lampshade 5. The LED light source assembly 4 further includes a top LED light source assembly 42. The top LED light source assembly 42 is connected to the end of the side LED light source assembly 41 away from the lamp holder 2. Specifically, the top LED light source assembly 42 and the end of the side LED light source assembly 41 away from the lamp holder 2 can be connected together by welding. A plurality of first LED light sources 421 are mounted on the top of the top LED light source assembly 42. The lampshade 5 covers and fixes the top LED light source assembly 42 on the end of the heat dissipation sleeve 3 away from the lamp holder 2, and is provided with a light-transmitting hole o corresponding to the first LED light source 421. In this way, the LED car lamp 100 can emit light at the top and the surrounding sides; and the lampshade 5 can fix the top LED light source assembly 42 between the lampshade 5 and the heat dissipation sleeve 3.

[0054] Alternatively, see Figure 2 In this embodiment, three first LED light sources 421 are mounted in a triangular shape on the top of the top LED light source assembly 42. Three light-transmitting holes o are arranged in a corresponding triangular shape on the lampshade 5. The first LED light sources 421 are located within the light-transmitting holes o, one by one. It can be understood that the first LED light sources 421 being located within the light-transmitting holes o means that the first LED light sources 421 do not protrude from the light-transmitting holes o of the lampshade 5. In this way, the light emitted by the first LED light sources 421 can be secondary guided through the inner wall of the light-transmitting holes o, achieving a high brightness effect with fewer lamp beads.

[0055] In order to realize the assembly and fixation between the lampshade 5, the heat dissipation sleeve 3 and the top LED light source assembly 42, optionally, please refer to Figure 2 and Figure 7 In this embodiment, the lower base 313 of the heat-dissipating reflective rib 31 extends away from the lamp holder 2 to form a clip 32. The inner circumferential wall of the lampshade 5 can press against the clip 32, so that the clips 32 clamp the circumferential wall of the top LED light source assembly 42. By pressing the inner circumferential wall of the lampshade 5 against the clip 32, the clips 32 clamp the circumferential wall of the top LED light source assembly 42, thereby securing the top LED light source assembly 42 to the end of the heat-dissipating sleeve 3 away from the lamp holder 2 via the lampshade 5.

[0056] In order to realize the assembly and fixation of the heat dissipation sleeve 3 and the lamp holder 2, optionally, please refer to Figure 2 and Figure 7In this embodiment, the lower base 313 of the heat-dissipating reflective rib 31 extends toward the lamp holder 2 to form connecting pieces 33. Several connecting pieces 33 have external threads 33d on their outer circumferences. The inner wall of the lamp holder 2, distal from the lamp head 1, has internal threads 21 that mate with the external threads 33d. In this manner, the heat-dissipating sleeve 3 and the lamp holder 2 can be assembled and secured via a threaded connection.

[0057] Alternatively, see Figure 2 and Figure 7 In this embodiment, four side LED light source assemblies 41 are evenly spaced and arranged on the outer periphery of the heat dissipation sleeve 3; four heat dissipation reflective vertebral bars 31 are correspondingly arranged on the outer periphery of the heat dissipation sleeve 3. Of course, in other embodiments, the number of side LED light source assemblies 41 and heat dissipation reflective vertebral bars 31 can also be other, which needs to be determined according to the specific size of the LED headlight 100 and the required lighting power, and is not specifically limited here. Optionally, in this embodiment, the side LED light source assembly 41 is vertically mounted with three second LED light sources 411. Of course, in other embodiments, the side LED light source assembly 41 can also be vertically mounted with other numbers of second LED light sources 411, and is not specifically limited here.

[0058] In order to improve the heat dissipation performance of the lamp holder 2, optionally, please refer to Figure 3 and Figure 4 In this embodiment, at least a portion of the peripheral wall of the lamp holder 2 has heat dissipation protrusions 22 arranged in the shape of corn kernels. This can greatly increase the heat dissipation area of ​​the periphery of the lamp holder 2 and improve the heat dissipation performance.

[0059] To avoid cutting your fingers when assembling the LED car light 100, please refer to Figure 5 and Figure 6 In this embodiment, the heat dissipation protrusions 22 of the lamp holder 2 near the heat dissipation sleeve 3 transition through a beveled guide surface 22a; the heat dissipation protrusions 22 of the lamp holder 2 away from the heat dissipation sleeve 3 transition through an arcuate guide surface 22b. This ensures that the heat dissipation protrusions 22 at both ends of the lamp holder 2 have no sharp edges, thus preventing injuries to fingers during assembly.

[0060] Alternatively, see Figure 1 In this embodiment, a conductive contact 11 is formed on the end of the lamp base 1 away from the LED light source assembly 4, and the surrounding wall of the lamp base 1 has symmetrically arranged latching bumps 12. The circuit board is electrically connected to the inner wall of the lamp base 1 via wires (not shown), and is also electrically connected to the LED light source assembly 4 via wires.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An LED car light, characterized in that: include: a lamp holder (2) in a ring shape; A lamp holder (1) is arranged at the lower end of the lamp holder (2) and is used for being electrically connected to an external power source, wherein the interior of the lamp holder cooperates with the inner annular space of the lamp holder (2) to form an accommodating cavity (f); a heat dissipation sleeve (3) contacting and arranged on the upper portion of the lamp holder (2); An LED light source assembly (4) comprising a plurality of side LED light source assemblies (41) spaced apart, extending vertically, and contacting the outer periphery of the heat dissipation sleeve (3); a circuit board, disposed in the accommodating cavity (f), and used for electrically connecting the lamp holder (1) and the LED light source assembly (4); Wherein, the outer periphery of the heat dissipation sleeve (3) and the spacing area corresponding to the side LED light source assembly (41) are provided with vertically extending heat dissipation reflective vertebral bars (31).

2. The LED vehicle lamp according to claim 1, wherein: The cross section of the heat dissipation reflective vertebral bar (31) is an arc-bottom trapezoid with an upper base (312) and a lower base (313) in the shape of concentric arcs.

3. The LED vehicle lamp according to claim 2, wherein: The peripheral wall of the heat dissipation sleeve (3) and a portion of the lower bottom (313) surface of two adjacent heat dissipation reflective vertebral bars (31) cooperate to form a limiting groove (c) for fixing the side LED light source assembly (41).

4. The LED vehicle lamp according to claim 2, wherein: Also includes: A lampshade (5); the LED light source assembly (4) further comprises a top LED light source assembly (42) connected to an end of the side LED light source assembly (41) away from the lamp holder (2); a plurality of first LED light sources (421) are mounted on the top of the top LED light source assembly (42); the lampshade (5) covers and fixes the top LED light source assembly (42) on an end of the heat dissipation sleeve (3) away from the lamp holder (2), and is provided with a light-transmitting hole (o) corresponding to the first LED light source (421).

5. The LED vehicle lamp according to claim 4, wherein: The three first LED light sources (421) are mounted in a triangular shape on the top of the top LED light source assembly (42); the three light-transmitting holes (o) are correspondingly arranged in a triangular shape on the lampshade (5); and the first LED light source (421) is located in the light-transmitting hole (o).

6. The LED vehicle lamp according to claim 4, wherein: The lower bottom (313) of the heat dissipation reflective vertebral bar (31) extends in a direction away from the lamp holder (2) to form a clip (32); the inner peripheral wall of the lampshade (5) can press against the clip (32) so that a plurality of the clips (32) clamp the peripheral wall of the top LED light source assembly (42).

7. The LED vehicle lamp according to claim 2, wherein: The lower base (313) of the heat dissipation reflective vertebral bar (31) extends in a direction close to the lamp holder (2) to form a connecting piece (33); the outer periphery of a plurality of the connecting pieces (33) has an external thread (33d); the inner wall of the lamp holder (2) at one end away from the lamp head (1) has an internal thread (21) threadably matched with the external thread (33d).

8. The LED vehicle lamp according to claim 1, wherein: The four side LED light source assemblies (41) are evenly spaced and arranged on the outer periphery of the heat dissipation sleeve (3); the outer periphery of the heat dissipation sleeve (3) is correspondingly provided with four heat dissipation reflective vertebral bars (31); and the side LED light source assembly (41) is vertically mounted with a plurality of second LED light sources (411).

9. The LED vehicle lamp according to claim 1, wherein: At least part of the peripheral wall of the lamp holder (2) has heat dissipation protrusions (22) arranged in the shape of corn kernels.

10. The LED vehicle lamp according to claim 8, wherein: A circle of heat dissipation protruding teeth (22) of the lamp holder (2) close to the heat dissipation sleeve (3) transitions through a guide bevel (22a); a circle of heat dissipation protruding teeth (22) of the lamp holder (2) away from the heat dissipation sleeve (3) transitions through an arc guide surface (22b).

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